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Qu J, Zhang T, Zhang X, Zhang W, Li Y, Gong Q, Yao L, Lui S. MRI radiomics for predicting intracranial progression in non-small-cell lung cancer patients with brain metastases treated with epidermal growth factor receptor tyrosine kinase inhibitors. Clin Radiol 2024; 79:e582-e591. [PMID: 38310058 DOI: 10.1016/j.crad.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/04/2023] [Accepted: 01/03/2024] [Indexed: 02/05/2024]
Abstract
AIM To identify clinical and magnetic resonance imaging (MRI) radiomics predictors specialised for intracranial progression (IP) after first-line epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) treatment in non-small-cell lung cancer (NSCLC) patients with brain metastases (BMs). MATERIALS AND METHODS Seventy EGFR-mutated NSCLC patients with a total of 212 BMs who received first-line EGFR-TKI therapy were enrolled. Radiomics features were extracted from the BM regions on the pretreatment contrast-enhanced T1-weighted images, and the radiomics score (rad-score) of each BM was established based on the selected features. Furthermore, the mean rad-score derived from the average rad-score of all included BMs in each patient was calculated. Univariate and multivariate logistic regression analyses were performed to identify potential predictors of IP. Prediction models based on different predictors and their combinations were constructed, and nomogram based on the optimal prediction model was evaluated. RESULTS Thirty-three (47.1 %) patients developed IP, and the remaining 37 (52.9 %) patients were IP-free. EGFR-19del mutation (OR 0.19, 95 % CI 0.05-0.69), third-generation TKI treatment (OR 0.33, 95 % CI 0.16-0.67) and mean rad-score (OR 5.71, 95 % CI 1.65-19.68) were found to be independent predictive factors. Models based on these three predictors alone and in combination (combined model) achieved AUCs of 0.64, 0.64, 0.74, and 0.86 and 0.64, 0.64, 0.75, and 0.84 in the training and validation sets, respectively, and the combined model demonstrated optimal performance for predicting IP. CONCLUSIONS The model integrating EGFR-19del mutation, third-generation TKI treatment and mean rad-score had good predictive value for IP after EGFR-TKI treatment in NSCLC patients with BM.
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Affiliation(s)
- J Qu
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - T Zhang
- Department of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - X Zhang
- Pharmaceutical Diagnostic Team, GE Healthcare, Life Sciences, Beijing, China
| | - W Zhang
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - Y Li
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - Q Gong
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - L Yao
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.
| | - S Lui
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.
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Gao X, Li X, Chen L, Chen S, Hou G, Lin L, Wang Q, Qu J, Liu S. A biomarker panel of secondary hypertension is simultaneously quantified by coupling of magnetic solid-phase extraction and liquid chromatography-tandem mass spectrometry. Rapid Commun Mass Spectrom 2024; 38:e9703. [PMID: 38356091 DOI: 10.1002/rcm.9703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/07/2023] [Accepted: 12/21/2023] [Indexed: 02/16/2024]
Abstract
RATIONALE Secondary hypertension is often caused by activation of complex multi-organ endocrine systems, while renin activity indicated by angiotensins (Angs), aldosterone (ALD) and cortisol (COR) in such systems are generally accepted as its diagnostic markers. As antibody-based methods cannot offer comparable quantification for these biomarkers, a liquid chromatography (LC)-tandem mass spectrometry (MS/MS)-based approach was developed to quantify them simultaneously and accurately. METHODS Five different beads for magnetic solid-phase extraction (MSPE) were evaluated towards their enrichment efficiency for these biomarkers. An LC system with optimized elution gradient and a triple-quadrupole MS with tuned parameters were coupled to quantitatively monitor the extracted analytes. The method performance was further examined such as linearity, precision, stability, recovery rate and matrix effect. Based on the developed method, the abundance of Ang II, ALD and COR in plasma was measured and the quantification was compared with that derived from commercial ELISA kits. RESULTS As compared with other MSPEs, Angs, ALD and COR were highly enriched by the HLB magnetic beads with satisfactory recoveries. These analytes were simultaneously quantified by LC/MS/MS and all the method parameters for quantification were well matched with the requirements of clinical testing. Comparison of the quantitative results derived from ELISA and LC/MS/MS exhibited that the two methods offered basically comparable values with Pearson r values at 0.896, 0.895 and 0.835, respectively. The stability test for plasma Angs at room temperature indicated that the abundance of Ang II was relatively stable within 3 h, whereas that of Ang I and Ang 1-7 was time-dependently changed. CONCLUSIONS Coupling of HLB beads and LC/MS/MS thus enables simultaneous quantification of a set of biomarkers related to secondary hypertension.
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Affiliation(s)
- Xi Gao
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI Genomics, Shenzhen, China
| | - Xiaoyong Li
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | | | - Shuyan Chen
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- National Clinical Research Center for Infectious Diseases, Shenzhen Third People's Hospital, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | | | | | | | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Siqi Liu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI Genomics, Shenzhen, China
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Li L, Zhang H, Zhang J, Xiao Y, Li Y, Qu J. TEMPORARY REMOVAL: The first investigation of a nosocomial outbreak caused by ST80 vancomycin-resistant Enterococci faecium in China. J Hosp Infect 2023:S0195-6701(23)00356-0. [PMID: 37951417 DOI: 10.1016/j.jhin.2023.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
The publisher regrets that this article has been temporarily removed. A replacement will appear as soon as possible in which the reason for the removal of the article will be specified, or the article will be reinstated. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal.
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Affiliation(s)
- L Li
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - H Zhang
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong 518033, China
| | - J Zhang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Y Xiao
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Y Li
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong 518033, China.
| | - J Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China.
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Zhu Q, Lin Q, Jiang Y, Chen S, Tian J, Yang S, Li Y, Li M, Wang Y, Shen C, Meng S, Yang L, Feng Y, Qu J. Construction and application of the conditionally essential gene knockdown library in Klebsiella pneumoniae to screen potential antimicrobial targets and virulence genes via Mobile-CRISPRi-seq. Appl Environ Microbiol 2023; 89:e0095623. [PMID: 37815340 PMCID: PMC10617577 DOI: 10.1128/aem.00956-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/09/2023] [Indexed: 10/11/2023] Open
Abstract
Klebsiella pneumoniae is a ubiquitous human pathogen, and its clinical treatment faces two major challenges: multidrug resistance and the pathogenesis of hypervirulent K. pneumoniae. The discovery and study of conditionally essential (CE) genes that can function as potential antimicrobial targets has always been a research concern due to their restriction in the development of novel antibiotics. However, the lack of essential functional genomic data has hampered the study of the mechanisms of essential genes related to antimicrobial susceptibility. In this study, we developed a pooled CE genes mobile clustered regularly interspaced short palindromic repeat (CRISPR) interference screening method (Mobile-CRISPRi-seq) for K. pneumoniae to identify genes that play critical roles in antimicrobial fitness in vitro and host immunity in vivo. Targeting 870 predicted CE genes in K. pneumoniae, Mobile-CRISPRi-seq uncovered the depletion of tetrahydrofolate synthesis pathway genes folB and folP under trimethoprim pressure. Our screening also identified genes waaE and fldA related to polymyxin and β-lactam susceptibility by applying a screening strategy based on Mobile-CRISPRi-seq and comparative genomics. Furthermore, using a mouse infection model and Mobile-CRISPRi-seq, multiple virulence genes were identified, and among these genes, pal, yciS, and ribB were demonstrated to contribute to the pathogenesis of K. pneumoniae. This study provides a simple, rapid, and effective platform for screening potential antimicrobial targets and virulence genes in K. pneumoniae, and this broadly applicable system can be expanded for high-throughput functional gene study in multiple pathogenic bacteria, especially in gram-negative bacteria. IMPORTANCE The discovery and investigation of conditionally essential (CE) genes that can function as potential antimicrobial targets has always been a research concern because of the restriction of antimicrobial targets in the development of novel antibiotics. In this study, we developed a pooled CE gene-wide mobile clustered regularly interspaced short palindromic repeat (CRISPR) interference sequencing (Mobile-CRISPRi-seq) strategy in Klebsiella pneumoniae to identify genes that play critical roles in the fitness of antimicrobials in vitro and host immunity in vivo. The data suggest a robust tool to screen for loss-of-function phenotypes in a pooled gene knockdown library in K. pneumoniae, and Mobile-CRISPRi-seq may be expanded to multiple bacteria for screening and identification of genes with crucial roles in the fitness of antimicrobials and hosts.
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Affiliation(s)
- Qing Zhu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Qiang Lin
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong Province, China
| | - Yushan Jiang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Shuyan Chen
- Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Junxuan Tian
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Shijin Yang
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Yuanchun Li
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Mengjun Li
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Yuelin Wang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Chenguang Shen
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Songdong Meng
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Center for Biosafety Mega-Science, Chinese Academy of Sciences (CAS), Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Liang Yang
- Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong Province, China
- Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Youjun Feng
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
- Departments of Microbiology and General Intensive Care Unit of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
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Li W, Li C, Liu T, Wang Y, Ma X, Xiao X, Zhang Q, Qu J. Self-reported sleep disorders and the risk of all cancer types: evidence from the Kailuan Cohort study. Public Health 2023; 223:209-216. [PMID: 37677850 DOI: 10.1016/j.puhe.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/18/2023] [Accepted: 08/03/2023] [Indexed: 09/09/2023]
Abstract
OBJECTIVES Previous studies that focussed on sleep disturbance have primarily examined specific aspects of sleep disorders rather than considering overall sleep quality. We aimed to investigate different sleep disorders and their combination as risk factors for different types of cancer. STUDY DESIGN Prospective cohort study. METHODS In this prospective cohort study, we included 78,232 participants. A self-reported questionnaire was used to address insomnia, daytime sleepiness, snoring, and sleep duration. Overall sleep quality was evaluated by summarising these four sleep parameters. Cox proportional hazards analysis was used to estimate the hazard ratios and their 95% confidence intervals for determining the effect of the overall sleep-quality score and its components on the risk of incident cancer. RESULTS During a median follow-up of 5.67 years, 1266 participants were diagnosed with incident cancer. Compared to participants in the best sleep-quality score group, participants in the worst sleep-quality score group had a higher subsequent risk of overall cancer, and colorectal, breast, uterine or uterine cervical, prostatic, kidney, and bladder cancer. Participants with insomnia and snoring status had an elevated risk of head and neck, breast, uterine or uterine cervical, prostatic, kidney, bladder cancer, and lymphoma. CONCLUSIONS Poor overall sleep-quality scores as well as poor scores for the scale's components, including insomnia and snoring status, elevated the risk of overall and several specific-site cancers. TRIAL REGISTRATION Kailuan Study, ChiCTR2000029767. Registered 12 February, 2020-Retrospectively registered, https://www.chictr.org.cn/showprojEN.html?proj=48316.
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Affiliation(s)
- W Li
- Department of General Surgery, Aerospace Centre Hospital, Beijing, 100038, China
| | - C Li
- Department of Oncology, Dazu Hospital of Chongqing Medical University, Chongqing, 402360, China
| | - T Liu
- Department of Gastrointestinal Surgery/Clinical Nutrition, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, 100038, China
| | - Y Wang
- Department of Hepatological Surgery, Kailuan General Hospital, Tangshan, 063000, China
| | - X Ma
- Department of Hepatological Surgery, Kailuan General Hospital, Tangshan, 063000, China
| | - X Xiao
- Department of Gynecology, Aerospace Center Hospital, 100038, China.
| | - Q Zhang
- Department of General Surgery, Kailuan General Hospital, Tangshan, 063000, China.
| | - J Qu
- Department of General Surgery, Aerospace Centre Hospital, Beijing, 100038, China.
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Chen S, Liu H, Li T, Lai W, Liu L, Xu Y, Qu J. Using Microfluidic Chip and Allele-Specific PCR to Rapidly Identify Drug Resistance-Associated Mutations of Mycobacterium tuberculosis. Infect Drug Resist 2023; 16:4311-4323. [PMID: 37424666 PMCID: PMC10327919 DOI: 10.2147/idr.s410779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/20/2023] [Indexed: 07/11/2023] Open
Abstract
Background The currently used conventional susceptibility testing for drug-resistant Mycobacterium tuberculosis (M.TB) is limited due to being time-consuming and having low efficiency. Herein, we propose the use of a microfluidic-based method to rapidly detect drug-resistant gene mutations using Kompetitive Allele-Specific PCR (KASP). Methods A total of 300 clinical samples were collected, and DNA extraction was performed using the "isoChip®" Mycobacterium detection kit. Phenotypic susceptibility testing and Sanger sequencing were performed to sequence the PCR products. Allele-specific primers targeting 37 gene mutation sites were designed, and a microfluidic chip (KASP) was constructed using 112 reaction chambers to simultaneously detect multiple mutations. Chip validation was performed using clinical samples. Results Phenotypic susceptibility of clinical isolates revealed 38 rifampicin (RIF)-resistant, 64 isoniazid (INH)-resistant, 48 streptomycin (SM)-resistant and 23 ethambutol (EMB)-resistant strains, as well as 33 multi-drug-resistant TB (MDR-TB) strains and 20 strains fully resistant to all four drugs. Optimization of the chip-based detection system for drug resistance detection showed satisfactory specificity and maximum fluorescence at a DNA concentration of 1×101 copies/µL. Further analysis revealed that 76.32% of the RIF-resistant strains harbored rpoB gene mutations (sensitivity, 76.32%; specificity 100%), 60.93% of the INH-resistant strains had katG gene mutations (sensitivity, 60.93%; specificity, 100%), 66.66% of the SM-resistant strains carried drug resistance gene mutations (sensitivity, 66.66%; specificity, 99.2%), and 69.56% of the EMB-resistant strains had embB gene mutations (sensitivity, 69.56%; specificity, 100%). Further, the overall agreement between the microfluidic chip and Sanger sequencing was satisfactory, with a turnaround time of the microfluidic chip was approximately 2 hours, much shorter than the conventional DST method. Conclusion The proposed microfluidic-based KASP assay provides a cost-effective and convenient method for detecting mutations associated with drug resistance in M. tuberculosis. It represents a promising alternative to the traditional DST method, with satisfactory sensitivity and specificity and a much shorter turnaround time.
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Affiliation(s)
- Shan Chen
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
| | - Houming Liu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
| | - Tianpin Li
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
| | - Wenjie Lai
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
| | - Lei Liu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
| | - Youchun Xu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, People’s Republic of China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, National Clinical Research Center for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, 518112, People’s Republic of China
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Zhao J, Pu D, Zhang Y, Qu J, Lu B, Cao B. Comparison of Performances of GeneXpert MTB/RIF, Bactec MGIT 960, and Bactec Myco/F Systems in Detecting Mycobacterium tuberculosis in Biopsy Tissues: a Retrospective Study. Microbiol Spectr 2023; 11:e0141422. [PMID: 37154704 PMCID: PMC10269854 DOI: 10.1128/spectrum.01414-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 04/18/2023] [Indexed: 05/10/2023] Open
Abstract
Tuberculosis remains a major global public concern as a leading cause of health care-associated infections. The detection of Mycobacterium tuberculosis (MTB) is challenging due to the paucibacillary nature of the pathogen. For suspected pulmonary and extrapulmonary tuberculosis patients, if sputum, bronchoalveolar lavage fluid (BALF), related samples are negative for MTB, or suspected tumors, biopsy tissues may provide a better diagnostic yield. This study was aimed at comparing the performances of three methods in identifying MTB in biopsy tissues, including the Bactec mycobacterial growth indicator tube 960 (MGIT 960) system, the GeneXpert MTB/RIF assay (GeneXpert), and the Bactec Myco/F lytic culture (Myco/F) system. Biopsy samples from 3,209 nonduplicated patients were retrospectively enrolled between January 2018 and September 2021, of which 180 (5.6%) were positive for MTB by at least one method. GeneXpert revealed the highest recovery rate (134/162, 82.7%), followed by MGIT 960 (99/135, 73.3%) and Myco/F (26/143, 18.1%), and the composite positive rate for GeneXpert and MGIT 960 was 96.6% (173/179). Pairwise comparisons were conducted after completion of both tests, and the results showed that Myco/F had significantly lower detection rates than GeneXpert and MGIT 960 (16.4% versus 82.8%, P < 0.001; 14.3% versus 71.4%, P < 0.001). In summary, GeneXpert was the most sensitive and recommended method for MTB detection in biopsy tissues, and the combination of GeneXpert and MGIT 960 could improve the overall diagnostic yield. IMPORTANCE Mycobacterium tuberculosis (MTB) poses a severe threat to public health worldwide. The diagnosis of tuberculosis is challenging due to the low load of the microorganism in samples. Biopsy tissues are sometimes collected via invasive procedures with limited size, and additional samples are often inaccessible. The GeneXpert MTB/RIF assay, Bactec MGIT 960 system, and Bactec Myco/F lytic system have been used in detecting MTB in our laboratory. Here, we evaluated the performances of these three methods in 3,209 biopsy tissues samples to establish a more effective protocol based on clinical requirements. Attempts for a locally optimized protocol should be always made.
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Affiliation(s)
- Jiankang Zhao
- Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, National Center for Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Danni Pu
- Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, National Center for Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yulin Zhang
- Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, National Center for Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, Guangdong, China
| | - Binghuai Lu
- Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, National Center for Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Bin Cao
- Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, National Center for Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- Tsinghua University-Peking University Joint Center for Life Sciences, Beijing, China
- Department of Respiratory Medicine, Capital Medical University, Beijing, China
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Wang D, Wang X, Ye F, Zou J, Qu J, Jiang X. An Integrated Amplification-Free Digital CRISPR/Cas-Assisted Assay for Single Molecule Detection of RNA. ACS Nano 2023; 17:7250-7256. [PMID: 37052221 PMCID: PMC10108731 DOI: 10.1021/acsnano.2c10143] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 04/10/2023] [Indexed: 05/09/2023]
Abstract
Conventional nucleic acid detection technologies usually rely on amplification to improve sensitivity, which has drawbacks, such as amplification bias, complicated operation, high requirements for complex instruments, and aerosol pollution. To address these concerns, we developed an integrated assay for the enrichment and single molecule digital detection of nucleic acid based on a CRISPR/Cas13a and microwell array. In our design, magnetic beads capture and concentrate the target from a large volume of sample, which is 100 times larger than reported earlier. The target-induced CRISPR/Cas13a cutting reaction was then dispersed and limited to a million individual femtoliter-sized microwells, thereby enhancing the local signal intensity to achieve single-molecule detection. The limit of this assay for amplification-free detection of SARS-CoV-2 is 2 aM. The implementation of this study will establish a "sample-in-answer-out" single-RNA detection technology without amplification and improve the sensitivity and specificity while shortening the detection time. This research has broad prospects in clinical application.
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Affiliation(s)
- Dou Wang
- Shenzhen Key Laboratory of Smart Healthcare
Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of
Biomedical Engineering, Southern University of Science and
Technology, No. 1088, Xueyuan Road, Xili, Nanshan District, Shenzhen,
Guangdong 518055, P. R. China
| | - Xuedong Wang
- Shenzhen Key Laboratory of Smart Healthcare
Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of
Biomedical Engineering, Southern University of Science and
Technology, No. 1088, Xueyuan Road, Xili, Nanshan District, Shenzhen,
Guangdong 518055, P. R. China
| | - Feidi Ye
- Department of Clinical Laboratory,
Shenzhen Third People’s Hospital, Second Hospital Affiliated to
Southern University of Science and Technology, National Clinical Research Center for
Infectious Diseases, Guangdong, 518055, P. R.
China
| | - Jin Zou
- Department of Clinical Laboratory,
Shenzhen Third People’s Hospital, Second Hospital Affiliated to
Southern University of Science and Technology, National Clinical Research Center for
Infectious Diseases, Guangdong, 518055, P. R.
China
| | - Jiuxin Qu
- Department of Clinical Laboratory,
Shenzhen Third People’s Hospital, Second Hospital Affiliated to
Southern University of Science and Technology, National Clinical Research Center for
Infectious Diseases, Guangdong, 518055, P. R.
China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare
Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of
Biomedical Engineering, Southern University of Science and
Technology, No. 1088, Xueyuan Road, Xili, Nanshan District, Shenzhen,
Guangdong 518055, P. R. China
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9
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Liao H, Zhang H, Shao J, Li X, Zheng WV, Li L, Yu G, Si L, Zhou T, Yao Z, Dai J, Xu D, Cheng G, Qu J, Liu Y, Chen J, Lu F. Nucleos(t)ide analogues altered quasispecies composition of hepatitis B virus (HBV)-resistant mutations in serum HBV DNA and serum HBV RNA. J Med Virol 2023; 95:e28612. [PMID: 36840474 DOI: 10.1002/jmv.28612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/26/2023]
Abstract
Serum hepatitis B virus (HBV) RNA is a new serological indicator reflecting viral replication with good clinical application prospects. This study aimed to clarify the dynamic changes of serum HBV RNA levels and the quasispecies of HBV RNA virus-like particles in nucleos(t)ide analogues (NAs)-experienced chronic hepatitis B (CHB) patients harboring NAs-resistant mutations and their identifiable effects on NAs resistance. We included CHB patients who were on long-term NAs treatment and with HBV DNA rebound. The longitudinally dynamics of serum HBV RNA levels were quantitatively detected, and the quasispecies differences between serum HBV DNA and serum HBV RNA were compared by high-throughput sequencing. The effect of NAs concentration pressure on altering the resistance mutations quasispecies proportion of HBV DNA and HBV RNA in cell supernatant was analyzed in vitro. A total of 447 serum samples from 36 CHB patients treated with NAs were collected. The median follow-up period was 47 months (about 4 years), and the longest follow-up period was 117 months (about 10 years). Our results showed that HBV RNA could reflect virological breakthrough in 23 (64%, 23/36) patients, and serum HBV RNA rebound earlier than HBV DNA in 12 (52%, 12/23) patients. However, serum HBV RNA remained at a consistently high level and did not fluctuate significantly with the HBV DNA rebound in 6 of 36 patients. In addition, serum HBV RNA was not consistently detectable in 7 of the 36 patients, and their serum HBV RNA was undetectable even after HBV DNA had rebounded. The proportion of drug-resistant mutations in HBV DNA was higher than that of HBV RNA by high-throughput sequencing. The results of in vitro experiments showed that the viral strains with drug-resistant mutation in HBV DNA in cell supernatants gradually become the dominant strains with the increase of NAs concentrations. Serum HBV RNA levels can reflect virological breakthrough in most NAs- treated CHB patients, but there are certain limitations. NAs alter the quasispecies composition of serum HBV DNA and serum HBV RNA, resulting in a higher detection rate of drug-resistant mutations in serum HBV DNA than in serum HBV RNA. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hao Liao
- Intervention and Cell Therapy Center, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518035, Guangdong province, China
| | - He Zhang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, 518036, Shenzhen, China
| | - Jinman Shao
- Comprehensive internal medicine department, Beijing Xiaotangshan Hospital, Beijing, 102211, China
| | - Xiaoyong Li
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, 518036, Shenzhen, China
| | - Wei V Zheng
- Intervention and Cell Therapy Center, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518035, Guangdong province, China
| | - Le Li
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Guangxin Yu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Lanlan Si
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Tao Zhou
- Intervention and Cell Therapy Center, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518035, Guangdong province, China
| | - Zengtao Yao
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Jiuzeng Dai
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Dongping Xu
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Guanxun Cheng
- Intervention and Cell Therapy Center, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518035, Guangdong province, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, 518036, Shenzhen, China
| | - Yan Liu
- Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Junhui Chen
- Intervention and Cell Therapy Center, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518035, Guangdong province, China
| | - Fengmin Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
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10
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Ren A, Jia M, Liu J, Zhou T, Wu L, Dong T, Cai Z, Qu J, Liu Y, Yang L, Zhang Y. Acquisition of T6SS Effector TseL Contributes to the Emerging of Novel Epidemic Strains of Pseudomonas aeruginosa. Microbiol Spectr 2023; 11:e0330822. [PMID: 36546869 PMCID: PMC9927574 DOI: 10.1128/spectrum.03308-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 11/16/2022] [Indexed: 12/24/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen with multiple strategies to interact with other microbes and host cells, gaining fitness in complicated infection sites. The contact-dependent type VI secretion system (T6SS) is one critical secretion apparatus involved in both interbacterial competition and pathogenesis. To date, only limited numbers of T6SS-effectors have been clearly characterized in P. aeruginosa laboratory strains, and the importance of T6SS diversity in the evolution of clinical P. aeruginosa remains unclear. Recently, we characterized a P. aeruginosa clinical strain LYSZa7 from a COVID-19 patient, which adopted complex genetic adaptations toward chronic infections. Bioinformatic analysis has revealed a putative type VI secretion system (T6SS) dependent lipase effector in LYSZa7, which is a homologue of TseL in Vibrio cholerae and is widely distributed in pathogens. We experimentally validated that this TseL homologue belongs to the Tle2, a subfamily of T6SS-lipase effectors; thereby, we name this effector TseL (TseLPA in this work). Further, we showed the lipase-dependent bacterial toxicity of TseLPA, which primarily targets bacterial periplasm. The toxicity of TseLPA can be neutralized by two immunity proteins, TsiP1 and TsiP2, which are encoded upstream of tseL. In addition, we proved this TseLPA contributes to bacterial pathogenesis by promoting bacterial internalization into host cells. Our study suggests that clinical bacterial strains employ a diversified group of T6SS effectors for interbacterial competition and might contribute to emerging of new epidemic clonal lineages. IMPORTANCE Pseudomonas aeruginosa is one predominant pathogen that causes hospital-acquired infections and is one of the commonest coinfecting bacteria in immunocompromised patients and chronic wounds. This bacterium harbors a diverse accessory genome with a high frequency of gene recombination, rendering its population highly heterogeneous. Numerous Pa lineages coexist in the biofilm, where successful epidemic clonal lineage or strain-specific type commonly acquires genes to increase its fitness over the other organisms. Current studies of Pa genomic diversity commonly focused on antibiotic resistant genes and novel phages, overlooking the contribution of type VI secretion system (T6SS). We characterized a Pa clinical strain LYSZa7 from a COVID-19 patient, which adopted complex genetic adaptations toward chronic infections. We report, in this study, a novel T6SS-lipase effector that is broadly distributed in Pa clinical isolates and other predominant pathogens. The study suggests that hospital transmission may raise the emergence of new epidemic clonal lineages with specified T6SS effectors.
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Affiliation(s)
- Anmin Ren
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Minlu Jia
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Jihong Liu
- Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen, Guangdong, People’s Republic of China
| | - Tian Zhou
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Liwen Wu
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Tao Dong
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Zhao Cai
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Jiuxin Qu
- Shenzhen Third People’s Hospital, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Yang Liu
- Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen, Guangdong, People’s Republic of China
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
- Shenzhen Third People’s Hospital, The Second Affiliated Hospital of Southern University of Science and Technology, National Clinical Research Center for Infectious Disease, Shenzhen, Guangdong, People’s Republic of China
- Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
| | - Yingdan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, People’s Republic of China
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11
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Geng J, Yang X, Wang K, Wang K, Chen R, Chen ZN, Qin C, Wu G, Wang Y, Xu K, Du P, Liu J, Chen S, Zhang T, Sun X, Guo T, Shi Y, Zhang Z, Wei D, Lin P, Wang Q, Yuan J, Qu J, Zou J, Liu Y, Lu H, Zhu P, Bian H, Chen L. Immunological and metabolic characteristics of the Omicron variants infection. Signal Transduct Target Ther 2023; 8:42. [PMID: 36681668 PMCID: PMC9860238 DOI: 10.1038/s41392-022-01265-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/11/2022] [Accepted: 11/22/2022] [Indexed: 01/22/2023] Open
Abstract
The Omicron variants of SARS-CoV-2, primarily authenticated in November 2021 in South Africa, has initiated the 5th wave of global pandemics. Here, we systemically examined immunological and metabolic characteristics of Omicron variants infection. We found Omicron resisted to neutralizing antibody targeting receptor binding domain (RBD) of wildtype SARS-CoV-2. Omicron could hardly be neutralized by sera of Corona Virus Disease 2019 (COVID-19) convalescents infected with the Delta variant. Through mass spectrometry on MHC-bound peptidomes, we found that the spike protein of the Omicron variants could generate additional CD8 + T cell epitopes, compared with Delta. These epitopes could induce robust CD8 + T cell responses. Moreover, we found booster vaccination increased the cross-memory CD8 + T cell responses against Omicron. Metabolic regulome analysis of Omicron-specific T cell showed a metabolic profile that promoted the response of memory T cells. Consistently, a greater fraction of memory CD8 + T cells existed in Omicron stimulated peripheral blood mononuclear cells (PBMCs). In addition, CD147 was also a receptor for the Omicron variants, and CD147 antibody inhibited infection of Omicron. CD147-mediated Omicron infection in a human CD147 transgenic mouse model induced exudative alveolar pneumonia. Taken together, our data suggested that vaccination booster and receptor blocking antibody are two effective strategies against Omicron.
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Affiliation(s)
- Jiejie Geng
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Xu Yang
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Kun Wang
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ke Wang
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ruo Chen
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhi-Nan Chen
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Chuan Qin
- Key Laboratory of Human Disease Comparative Medicine, Chinese Ministry of Health, Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100871, China
| | - Guizhen Wu
- MHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Preven- tion, Chinese Center for Disease Control and Prevention, Beijing, 100871, China
| | - Youchun Wang
- Division of HIV/AIDS and Sex-transmitted Virus Vaccines, Institute for Biological Product Control, National Institutes for Food and Drug Control (NIFDC) and WHO Collaborating Center for Standardization and Evaluation of Biologicals, Beijing, 102629, China
| | - Ke Xu
- MHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Preven- tion, Chinese Center for Disease Control and Prevention, Beijing, 100871, China
| | - Peng Du
- Beijing Institute of Biotechnology, Beijing, 100871, China
| | - Jiangning Liu
- Key Laboratory of Human Disease Comparative Medicine, Chinese Ministry of Health, Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100871, China
| | - Shirui Chen
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Tao Zhang
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Xiuxuan Sun
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ting Guo
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ying Shi
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zheng Zhang
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ding Wei
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Peng Lin
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Qingyi Wang
- School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Jing Yuan
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China
| | - Jiuxin Qu
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China
| | - Jin Zou
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China
| | - Yingxia Liu
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China.
| | - Hongzhou Lu
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China.
| | - Ping Zhu
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Huijie Bian
- Department of Cell Biology of National Translational Science Center for Molecular Medicine and Department of Clinical Immunology of Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Liang Chen
- School of Medicine, Shanghai University, Shanghai, 200444, China.
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12
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Liao H, Qu J, Lu H. Molecular and immunological diagnosis of Monkeypox virus in the clinical laboratory. Drug Discov Ther 2022; 16:300-304. [PMID: 36529507 DOI: 10.5582/ddt.2022.01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The 2022 monkeypox outbreak outside Africa is ongoing. Cases have been reported in Hong Kong and Chongqing, China. In order to better prevent and control the potential spread of monkeypox virus in China, the development of sensitive and reliable detection commercial kits is imminent. This correspondence reviews the existing laboratory assays and related technologies for nucleic acid (PCR) and serological assays for the diagnosis of monkeypox virus to provide reference for the management and decision-making departments. Due to the serological cross-reactivity of orthopoxviruses, PCR is the laboratory test of choice to confirm monkeypox virus infection. We recommend a dual-target PCR approach in which one assay targets a conserved sequence of the Orthopoxvirus genus and the other targets a monkeypox virus specific sequence.
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Affiliation(s)
- Hao Liao
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, Guangdong, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, Guangdong, China
| | - Hongzhou Lu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, Guangdong, China
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13
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Smits J, Cunha D, Qu J, Latta L, Szentmary N, Seitz B, Roux L, Aberdam D, van Heeringen S, Zhou H. 553 Multi-omics analysis identifies coordination and hierarchy of transcription factors controlling specific epithelial cell fates in corneal epithelium. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Cheng H, Sun Y, Yang Q, Deng M, Yu Z, Zhu G, Qu J, Liu L, Yang L, Xia Y. A rapid bacterial pathogen and antimicrobial resistance diagnosis workflow using Oxford nanopore adaptive sequencing method. Brief Bioinform 2022; 23:6762743. [PMID: 36259361 DOI: 10.1093/bib/bbac453] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/16/2022] [Accepted: 09/22/2022] [Indexed: 12/14/2022] Open
Abstract
Metagenomic sequencing analysis (mNGS) has been implemented as an alternative approach for pathogen diagnosis in recent years, which is independent of cultivation and is able to identify all potential antibiotic resistance genes (ARGs). However, current mNGS methods have to deal with low amounts of prokaryotic deoxyribonucleic acid (DNA) and high amounts of host DNA in clinical samples, which significantly decrease the overall microbial detection resolution. The recently released nanopore adaptive sampling (NAS) technology facilitates immediate mapping of individual nucleotides to a given reference as each molecule is sequenced. User-defined thresholds allow for the retention or rejection of specific molecules, informed by the real-time reference mapping results, as they are physically passing through a given sequencing nanopore. We developed a metagenomics workflow for ultra-sensitive diagnosis of bacterial pathogens and ARGs from clinical samples, which is based on the efficient selective 'human host depletion' NAS sequencing, real-time species identification and species-specific resistance gene prediction. Our method increased the microbial sequence yield at least 8-fold in all 21 sequenced clinical Bronchoalveolar Lavage Fluid (BALF) samples (4.5 h from sample to result) and accurately detected the ARGs at species level. The species-level positive percent agreement between metagenomic sequencing and laboratory culturing was 100% (16/16) and negative percent agreement was 100% (5/5) in our approach. Further work is required for a more robust validation of our approach with large sample size to allow its application to other infection types.
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Affiliation(s)
- Hang Cheng
- School of Medicine, Southern University of Science and Technology of China, Shenzhen 518055, China
| | - Yuhong Sun
- School of Environmental Science & Engineering, Southern University of Science and Technology of China, Shenzhen 518055, China
| | - Qing Yang
- School of Environmental Science & Engineering, Southern University of Science and Technology of China, Shenzhen 518055, China
| | - Minggui Deng
- Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen 518055, China
| | - Zhijian Yu
- Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen 518055, China
| | - Gang Zhu
- Third People's Hospital of Shenzhen, the Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiuxin Qu
- Third People's Hospital of Shenzhen, the Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518055, China
| | - Lei Liu
- Third People's Hospital of Shenzhen, the Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518055, China
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology of China, Shenzhen 518055, China
| | - Yu Xia
- School of Environmental Science & Engineering, Southern University of Science and Technology of China, Shenzhen 518055, China
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15
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Zhu J, Qu J, Fan Y, Zhang R, Wang X. Curcumin Inhibits Invasion and Epithelial–Mesenchymal Transition in Hepatocellular Carcinoma Cells by Regulating TET1/Wnt/β-catenin Signal Axis. Bull Exp Biol Med 2022; 173:770-774. [DOI: 10.1007/s10517-022-05629-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Indexed: 11/11/2022]
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16
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Chen Y, Zong N, Ye F, Mei Y, Qu J, Jiang X. Dual-CRISPR/Cas12a-Assisted RT-RAA for Ultrasensitive SARS-CoV-2 Detection on Automated Centrifugal Microfluidics. Anal Chem 2022; 94:9603-9609. [PMID: 35775831 DOI: 10.1021/acs.analchem.2c00638] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The clustered regularly interspaced short palindromic repeats (CRISPR)-based nucleic acid detection can be combined with recombinase-aided amplification (RAA) to enable rapid, accurate, and early detection of SARS-CoV-2. Current CRISPR-based approaches to detecting viral nucleic acid typically require immense manual operations to transfer RPA amplicons for CRISPR detection or suffer from compromised sensitivity by mixing the competing RPA amplification and CRISPR detection. Here, we develop dual-CRISPR/Cas12a-assisted RT-RAA assay and a ″sample-to-answer″ centrifugal microfluidic platform that can automatically detect 1 copy/μL of the SARS-CoV-2 within 30 min. This chip separates the amplification (RAA) from detection (CRISPR), such that sensitivity is maximized and the time consumption is decreased by a factor of 3. For the 26 positive and 8 negative clinical SARS-CoV-2 samples, this automated centrifugal microfluidics achieved 100% accuracy compared to the gold-standard RT-PCR technique. This point-of-care test, with the advantages of being one-step, automated, rapid, and sensitive, will have a significant potential for clinical diagnosis and disease prevention.
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Affiliation(s)
- Yong Chen
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, P. R. China.,Guangdong Provincial Key Laboratory of Advanced Biomaterials, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
| | - Nan Zong
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, P. R. China.,Guangdong Provincial Key Laboratory of Advanced Biomaterials, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
| | - Feidi Ye
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Center for Infectious Diseases, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, Guangdong 518114, P. R. China
| | - Yixin Mei
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, P. R. China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Center for Infectious Diseases, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, Guangdong 518114, P. R. China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, P. R. China.,Guangdong Provincial Key Laboratory of Advanced Biomaterials, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
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17
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Yao M, Zhu Q, Zou J, Shenkutie AM, Hu S, Qu J, He Z, Leung PHM. Genomic Characterization of a Uropathogenic Escherichia coli ST405 Isolate Harboring bla CTX-M-15-Encoding IncFIA-FIB Plasmid, bla CTX-M-24-Encoding IncI1 Plasmid, and Phage-Like Plasmid. Front Microbiol 2022; 13:845045. [PMID: 35479623 PMCID: PMC9037040 DOI: 10.3389/fmicb.2022.845045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/08/2022] [Indexed: 11/13/2022] Open
Abstract
Escherichia coli sequence type 405 is an emerging antibiotic-resistant clonal group associated with the global dissemination of extended-spectrum β-lactamase-producing E. coli. In this study, we report the genome assembly and characterization of a uropathogenic E. coli ST405 strain, SZESBLEC201, based on long and short reads obtained from the Nanopore and Illumina sequencing platforms, respectively. Whole-genome sequencing revealed that SZESBLEC201 harbors a 5,020,403 bp chromosome and three plasmids, namely, pSZESBLEC201-1, pSZESBLEC201-2, and pSZESBLEC201-3. pSZESBLEC201-1 (111,621 bp) belongs to the IncFIA-FIB type and harbors bla CTX-M-15. However, this plasmid does not harbor conjugative transfer-associated genes, rendering pSZESBLEC201-1 unable to be conjugatively transferred. pSZESBLEC201-2 (95,138 bp) is a phage-like plasmid that shows a strong genome synteny with Escherichia phage P1 but with the absence of mobile genetic elements and some regulatory genes. pSZESBLEC201-3 (92,865 bp) belongs to the IncI1 type and carries bla CTX-M-24. In contrast to pSZESBLEC201-1, pSZESBLEC201-3 retains its full active conjugation machinery and can be transferred via conjugation. The genetic features of the genome show that the SZESBLEC201 has a unique virulence pattern compared with genetically similar strains found in the same country (China). The plasmid backbones exhibit a high degree of similarity to those of geographically distant isolates, highlighting the global spread of bla CTX-M genes and the genome plasticity of this clonal group. The coexistence of two bla CTX-M variants in the same strain increases the risk of the emergence of new bla CTX-M variants. Further studies on phage-like plasmids are necessary to provide insights into their biological activities and clinical significance.
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Affiliation(s)
- Mianzhi Yao
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Qianhui Zhu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jin Zou
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Abebe Mekuria Shenkutie
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China.,Department of Microbiology, Immunology, and Parasitology, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Songnian Hu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zilong He
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Interdisciplinary Innovation Institute of Medicine and Engineering, Beihang University, Beijing, China.,School of Engineering Medicine, Beihang University, Beijing, China
| | - Polly H M Leung
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
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18
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Li YX, Li G, Qu J, Ren X, Zheng L. Finger touching combined X-ray-guided percutaneous nephrolithotomy in 640 cases: an 8-years' experience. Eur Rev Med Pharmacol Sci 2022; 26:2867-2874. [PMID: 35503631 DOI: 10.26355/eurrev_202204_28617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE We aimed to evaluate the safety and efficacy of finger touching combined X-ray-guided percutaneous nephrolithotomy, and the feasibility of avoiding damage in medical staff caused by X-ray. PATIENTS AND METHODS From January 2013 to December 2020, 640 cases of percutaneous nephrolithotomy were performed through the 18-24-F channel. Among those cases, 22 (3.4%) cases were double-sided kidney stones surgeries, 294 (45.8%) cases were on the right side and 324 (50.5%) cases were on the left side. The targeted renal calyceal puncture was carried out under the combined guidance of the doctor's finger and X-ray. We assessed the X-ray exposure time of patients and doctors, average number of punctures, postoperative hospitalization, calculus removal rates, and complications. RESULTS The average number of punctures was 2.8 ± 1.4. Average X-ray exposure time during procedure: 2.8 s (range: 2-8 s). Average surgical time: 106.5 ± 49.4 min. Postoperative hospitalization: 6.8 ± 4.2 d. Average reduced hemoglobin level: 5.9 g/day. Stone-free rate 4 weeks after surgeries: 95.6%. Patients with upper ureteral calculi: 395 cases (61.72%). The calculus residual rate of patients with staghorn renal calculi or multiple renal calculi complementary treatments was 82.9%, including 0 patients who received shock wave lithotripsy, 2 cases of repeated percutaneous nephrolithotomy (PCNL), and 18 cases of ureteroscopy. Postoperative placement of renal drainage tube occurred in 52 cases. As for complications, no perirenal infection occurred, two severe bleeding complication cases occurred, and one case of colon perforation occurred. CONCLUSIONS Finger touching combined X-ray-guided percutaneous nephrolithotomy in patients with renal calculus is safe and can accurately guide the puncture without radiation hazards. The placement of a renal drainage tube was beneficial to reduce renal effusion, hematocele, and infections.
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Affiliation(s)
- Y-X Li
- Department of Urology, Institute of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
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19
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Zhang Y, Huang D, Lv N, Zhu G, Peng J, Chou T, Zhu Z, Wang J, Chen Y, Fang X, Qu J, Chen J, Liu S. Global Quantification of Glutathione S-Transferases in Human Serum Using LC-MS/MS Coupled with Affinity Enrichment. J Proteome Res 2022; 21:1311-1320. [PMID: 35353507 DOI: 10.1021/acs.jproteome.2c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The members of the glutathione S-transferase (GST) superfamily often exhibit functional overlap and can compensate for each other. Their concentrations in serum are considered as disease biomarkers. A global and quantitative evaluation of serum GSTs is therefore urgent, but there is a lack of efficient approaches due to technological limitations. GSH magnetic beads were examined for their affinity to enrich GSTs in serum, and the enriched GSTs were quantitatively targeted using a Q Exactive HF-X mass spectrometer in parallel reaction monitoring (PRM) mode. To optimize the quantification of GST peptides, sample types, trypsin digestion, and serum loading were carefully assessed; a biosynthetic method was employed to generate isotope-labeled GST peptides, and instrumental parameters were systematically optimized. A total of 134 clinical sera were collected for GST quantification from healthy donors and patients with four liver diseases. Using the new approach, GSTs in healthy sera were profiled: 14 GST peptides were quantified, and the abundance of five GST families was ranked GSTM > GSTP > GSTA > MGST1 > GSTT1, ranging from 0.1 to 4 pmol/L. Furthermore, combining the abundance of multiple GST peptides could effectively distinguish different types of liver diseases. Quantification of serum GSTs through targeted proteomics, therefore, has apparent clinical potential for disease diagnosis.
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Affiliation(s)
- Yuxing Zhang
- College of Life Sciences & Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China.,BGI-Shenzhen, Shenzhen 518083, China.,Beijing Institute of Genomics & China National Center for Bioinformation, Chinese Academy of Sciences, Beijing 100101, China
| | - Deliang Huang
- Department of Liver Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518100, China
| | - Ning Lv
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen 518114, China
| | | | - Jinghan Peng
- Department of Liver Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518100, China
| | | | - Zhibin Zhu
- Department of Liver Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518100, China
| | - Ju Wang
- BGI-Shenzhen, Shenzhen 518083, China
| | - Yuanyuan Chen
- Department of Liver Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518100, China
| | - Xiangdong Fang
- College of Life Sciences & Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China.,Beijing Institute of Genomics & China National Center for Bioinformation, Chinese Academy of Sciences, Beijing 100101, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen 518114, China
| | - Jun Chen
- Department of Liver Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518100, China
| | - Siqi Liu
- BGI-Shenzhen, Shenzhen 518083, China
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20
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Abstract
Bacterial persisters are a sub-population of phenotypic variants that tolerate high concentrations of antibiotics within the genetically homogeneous cells. They resume division upon the removal of drugs. Bacterial persistence is one of major causes of antibiotic treatment failure and recurrent infection. Cell dormancy, triggered by toxin/antitoxin pair, (p)ppGpp, SOS response and ATP levels, is known to be the mechanistic basis for persistence. However, recent studies have demonstrated that bacteria with active metabolism can maintain persistence by lowering intracellular antibiotic concentration via an efflux pump. Additionally, others and our work have showed that cell wall deficient bacteria (CWDB), including both L-form and spheroplasts that produced by β-lactam antibiotics, are associated with antibiotic persistence. They are not dormant cells as their cell walls have been completely damaged. In this review, we discuss the various types of persisters and highlight the contribution of non-walled bacteria on bacterial persistence.
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Affiliation(s)
- Jin Zou
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China.,Faculty of Health Sciences, University of Macau, Zhuhai, Macau SAR, China
| | - Bo Peng
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Zhuhai, Macau SAR, China.,Institute of Translational Medicine, University of Macau, Zhuhai, Macau SAR, China
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21
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Qu J, Cai Z, Duan X, Zhang H, Cheng H, Han S, Yu K, Jiang Z, Zhang Y, Liu Y, Bai F, Liu Y, Liu L, Yang L. Pseudomonas aeruginosa modulates alginate biosynthesis and type VI secretion system in two critically ill COVID-19 patients. Cell Biosci 2022; 12:14. [PMID: 35139898 PMCID: PMC8827185 DOI: 10.1186/s13578-022-00748-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/19/2022] [Indexed: 12/21/2022] Open
Abstract
Background COVID-19 pneumonia has caused huge impact on the health of infected patients and associated with high morbidity and mortality. Shift in the lung microbial ecology upon such viral infection often worsens the disease and increases host susceptibility to superinfections. Bacterial superinfection contributes to the aggravation of COVID-19 and poses a great challenge to clinical treatments. An in-depth investigation on superinfecting bacteria in COVID-19 patients might facilitate understanding of lung microenvironment post virus infections and superinfection mechanism. Results We analyzed the adaptation of two pairs of P. aeruginosa strains with the same MLST type isolated from two critical COVID-19 patients by combining sequencing analysis and phenotypic assays. Both P. aeruginosa strains were found to turn on alginate biosynthesis and attenuate type VI secretion system (T6SS) during short-term colonization in the COVID-19 patients, which results in excessive biofilm formation and virulence reduction-two distinct markers for chronic infections. The macrophage cytotoxicity test and intracellular reactive oxygen species measurement confirmed that the adapted P. aeruginosa strains reduced their virulence towards host cells and are better to escape from host immune clearance than their ancestors. Conclusion Our study suggests that SARS-CoV-2 infection can create a lung environment that allow rapid adaptive evolution of bacterial pathogens with genetic traits suitable for chronic infections. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00748-z.
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Affiliation(s)
- Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, 518000, Guangdong, China
| | - Zhao Cai
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiangke Duan
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Han Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Hang Cheng
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shuhong Han
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kaiwei Yu
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhaofang Jiang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, 518000, Guangdong, China
| | - Yingdan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yang Liu
- Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen, 518055, China
| | - Fang Bai
- School of Biological Sciences, Nankai University, Tianjin, 300071, China
| | - Yingxia Liu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, 518000, Guangdong, China.,Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, 518112, China
| | - Lei Liu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, 518000, Guangdong, China. .,Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, 518112, China.
| | - Liang Yang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Guangdong Provincial Clinical Research Center for Infectious Diseases (Tuberculosis), National Clinical Research Center for Infectious Diseases, Shenzhen, 518000, Guangdong, China. .,School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China. .,Shenzhen Key Laboratory for Gene Regulation and Systems Biology, Southern University of Science and Technology, Shenzhen, 518055, China.
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22
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Wang J, Liu X, Yu K, Liu M, Qu J, Liu Y, Cai Z, Wang K, Zhuo C, Yang L, Zhang Y. Psl-Dependent Cooperation Contributes to Drug Resistance of Pseudomonas aeruginosa in Dual-Species Biofilms with Acinetobacter baumannii. ACS Infect Dis 2022; 8:129-136. [PMID: 34936325 DOI: 10.1021/acsinfecdis.1c00416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Co-infection of Pseudomonas aeruginosa (Pa) and Acinetobacter baumannii (Ab) is frequently observed in intensive care unit (ICU) patients but difficult to eliminate. Current clinical practice based on microbial population characterization and single-species-based antibiotic resistance profiling has ignored the potential interspecies interactions, which might lead to novel drug-resistance phenotypes. Here, we investigated the impacts of interspecies interactions on antibiotic therapies by establishing a Pa and Ab dual-species biofilm model. Our data showed that antibiotic exposure would reshape the community compositions of dual-species biofilms, and those of the extracellular polymeric substance (EPS) matrix of Pa, Psl exopolysaccharide in particular, promoted its interactions with Ab against imipenem stress. We further found other EPS structural fiber-eDNA contributed to the Psl-dependent dual-species biofilm stability under antibiotic treatment. Thus, targeting the EPS structural fibers such as Psl and extracellular DNA (eDNA) is a potent strategy for controlling polymicrobial biofilm related infections.
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Affiliation(s)
- Jing Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
- The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China
| | - Xi Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Kaiwei Yu
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Moxiao Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiuxin Qu
- The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China
| | - Yingxia Liu
- The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China
| | - Zhao Cai
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ke Wang
- The First Affiliated Hospital of GuangXi Medical University, Guangxi 530021, China
| | - Chao Zhuo
- The State Key Laboratory of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, 510120 Guangzhou, Guangdong, China
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yingdan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, Southern University of Science and Technology, Shenzhen 518055, China
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23
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Jiang Z, Chen S, Zhu Q, Xiao Y, Qu J. COVID-19-associated pulmonary aspergillosis in a tertiary care center in Shenzhen City. J Infect Public Health 2022; 15:222-227. [PMID: 35032951 PMCID: PMC8733224 DOI: 10.1016/j.jiph.2021.12.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 12/27/2021] [Accepted: 12/30/2021] [Indexed: 12/30/2022] Open
Abstract
Objectives The severe coronavirus disease 2019 (COVID-19) is characterized by acute respiratory distress syndrome (ARDS) and risk of fungal co-infection, pulmonary aspergillosis in particular. However, COVID-19 associated pulmonary aspergillosis (CAPA) cases remain limited due to the difficulty in diagnosis. Methods We describe presumptive invasive aspergillosis in eight patients diagnosed with COVID-19 in a single center in Shenzhen, China. Data collected include underlying conditions, mycological findings, immunodetection results, therapies and outcomes. Results Four of the eight patients had tested positive for Aspergillus by either culture or Next-generation sequencing analysis of sputum or bronchoalveolar lavage fluid (BALF), while the rest of patients had only positive results in antigen or antibody detection. Although all patients received antifungal therapies, six of these eight patients (66.7%) died. Conclusion Due to the high mortality rate of CAPA, clinical care in patients with CAPA deserves more attention.
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Affiliation(s)
- Zhaofang Jiang
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Shuyan Chen
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Qing Zhu
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Yanyu Xiao
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Jiuxin Qu
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China.
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24
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Zhu Q, Chen S, Gu L, Qu J. Comparative analyses of clinical features reveal the severity of human adenovirus type 55 and type 7 in acute respiratory tract infections. J Med Microbiol 2021; 70. [PMID: 34951397 DOI: 10.1099/jmm.0.001445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction. Human adenovirus (HAdV) is an important pathogen in acute respiratory tract infections (ARTIs) and HAdV genotypes are associated with disease severity.Hypothesis. Comparative analyses of clinical features could reveal the severity of different HAdV genotypes in ARTIs.Aim. This study aimed to investigate the molecular epidemiology of HAdV infections and explore the correlations between clinical features and HAdV genotypes.Methodology. A retrospective study was conducted on ARTIs at Beijing Chao-Yang Hospital during the period 2011-2016. A standardized data form was used to record the clinical information. HAdV was detected by FQ-PCR from respiratory specimens, and genotypes were determined by entire hexon gene sequencing.Results. A total of 8044 samples were collected, of which 296 (3.7 %) were HAdV-positive. Patients ≤44 years old were more likely to be positive for HAdV. There were three peak periods of adenoviral infections, with detection rates of 13.03, 9.39 and 10.38 %, respectively. Six HAdV genotypes (HAdV-55, -7, -3, -14, -50, -2) were identified, with HAdV-55 and HAdV-7 being the most prevalent (50.6 and 21.5 %). Compared with HAdV-7 and other types, patients infected with HAdV-55 had a longer duration of fever (P=0.0428). Infections with HAdV-55 and HAdV-7 were more severe compared to those caused by other types, with higher rates of oxygen therapy and mechanical ventilation (P=0.0172 and P=0.0144). All five deaths were caused by HAdV-55.Conclusion. This study describes the epidemiological characteristics of HAdV infections in North China, revealing the higher severity of HAdV-55 and HAdV-7 in ARTIs. Thus, strengthened surveillance of HAdV genotypes is warranted.
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Affiliation(s)
- Qing Zhu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, PR China
| | - Shuyan Chen
- Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, PR China
| | - Li Gu
- Department of Infectious Diseases and Clinical Microbiology, Beijing Chao-Yang Hospital, Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, PR China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, PR China
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25
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Zhang W, Zhang Z, Pan S, Li J, Yang Y, Qi H, Xie J, Qu J. The clinical value of hematological neutrophil and monocyte parameters in the diagnosis and identification of sepsis. Ann Transl Med 2021; 9:1680. [PMID: 34988189 PMCID: PMC8667147 DOI: 10.21037/atm-21-5639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/16/2021] [Indexed: 11/30/2022]
Abstract
Background Sepsis is a life-threatening condition of organ dysfunction caused by the host’s disordered immune response to infection. It has a high fatality rate and seriously endangers human health. Rapid and accurate treatment plays an important role in the reduction of septic mortality. This study aimed to investigate the clinical value of hematological parameters neutrophil (NEU)-X, NEU-Y, monocyte (MON)-X, and MON-Y in sepsis, and compare their values with that of with C-reactive protein (CRP). Methods We collected dipotassium ethylenediaminetetraacetic acid (EDTA-K2) anticoagulant blood samples from a total of 267 patients with positive bacterial culture and 260 healthy physical check-up patients. Participants were divided into three groups: a normal control group (n=260), bacterial infection group (n=196), and a sepsis group (n=71). Results Median values of NEU-X, NEU-Y, MON-X, MON-Y, and CRP in the sepsis group were significantly higher than those in the control group and the bacterial infection group (P<0.0001). The area under the receiver operating characteristic curve (AUC) of NEU-X, NEU-Y, MON-X, MON-Y, and CRP for the diagnosis of sepsis was 0.751 (sensitivity 76.1%, specificity 58.2%), 0.877 (87.3%, 72.1%), 0.791 (77.6%, 65.9%), 0.695 (71.6%, 51.4%), and 0.790 (72.5%, 70.2%), respectively. In addition, blood smear examination results showed that NEU-X value was positively correlated with the degree of toxic granulation in neutrophils. Conclusions The parameters NEU-X, NEU-Y, and MON-X can be used as indicators for the differential diagnosis of sepsis with comparable diagnostic efficacy to CRP. Compared to CRP, these hematological parameters are easier to obtain, more convenient, and have economic benefits.
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Affiliation(s)
- Wenping Zhang
- Department of Clinical Laboratory, The Third People’s Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zhongming Zhang
- Department of Clinical Laboratory, The Third People’s Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Shiyao Pan
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Jin Li
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Yanmei Yang
- Department of Clinical Laboratory, The Third People’s Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Huan Qi
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Jiabin Xie
- Department of Clinical Laboratory, The Third People’s Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People’s Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
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26
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Gong J, Chen Y, Jie Y, Tan M, Jiang Z, Yuan L, Cao J, Li G, Chong Y, Qu J, Shi Y, Hu B. U-Shaped Relationship of Low-Density Lipoprotein Cholesterol With Risk of Severe COVID-19 From a Multicenter Pooled Analysis. Front Cardiovasc Med 2021; 8:604736. [PMID: 34504873 PMCID: PMC8421675 DOI: 10.3389/fcvm.2021.604736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 07/14/2021] [Indexed: 01/14/2023] Open
Abstract
Low-density lipoprotein cholesterol (LDL-C) is a well-known risk factor for coronary heart disease but protects against infection and sepsis. We aimed to disclose the exact association between LDL-C and severe 2019 novel coronavirus disease (COVID-19). Baseline data were retrospectively collected for 601 non-severe COVID-19 patients from two centers in Guangzhou and one center in Shenzhen, and patients on admission were medically observed for at least 15 days to determine the final outcome, including the non-severe group (n = 460) and the severe group (severe and critical cases) (n = 141). Among 601 cases, 76 (12.65%) received lipid-lowering therapy; the proportion of patients taking lipid-lowering drugs in the severe group was higher than that in the non-severe group (22.7 vs. 9.6%). We found a U-shaped association between LDL-C level and risk of severe COVID-19 using restricted cubic splines. Using univariate logistic regression analysis, odds ratios for severe COVID-19 for patients with LDL-C ≤1.6 mmol/L (61.9 mg/dL) and above 3.4 mmol/L (131.4 mg/dL) were 2.29 (95% confidence interval 1.12–4.68; p = 0.023) and 2.02 (1.04–3.94; p = 0.039), respectively, compared to those with LDL-C of 2.81–3.40 mmol/L (108.6–131.4 mg/dL); following multifactorial adjustment, odds ratios were 2.61 (1.07–6.37; p = 0.035) and 2.36 (1.09–5.14; p = 0.030). Similar results were yielded using 0.3 and 0.5 mmol/L categories of LDL-C and sensitivity analyses. Both low and high LDL-C levels were significantly associated with higher risk of severe COVID-19. Although our findings do not necessarily imply causality, they suggest that clinicians should pay more attention to lipid-lowering therapy in COVID-19 patients to improve clinical prognosis.
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Affiliation(s)
- Jiao Gong
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yaqiong Chen
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yusheng Jie
- Department of Infectious Diseases, Key Laboratory of Liver Disease of Guangdong Province, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.,Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University Yuedong Hospital, Meizhou, China
| | - Mingkai Tan
- Department of Laboratory Medicine, Guangzhou Eighth People's Hospital, Guangzhou, China
| | - Zhaofang Jiang
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Shenzhen, China
| | - Lianxiong Yuan
- Department of Science and Research, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jing Cao
- Department of Infectious Diseases, Key Laboratory of Liver Disease of Guangdong Province, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Ganwen Li
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University Yuedong Hospital, Meizhou, China
| | - Yutian Chong
- Department of Infectious Diseases, Key Laboratory of Liver Disease of Guangdong Province, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Shenzhen, China
| | - Yaling Shi
- Department of Laboratory Medicine, Guangzhou Eighth People's Hospital, Guangzhou, China
| | - Bo Hu
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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You H, Li M, Zhao JL, Wu L, Duan X, Luo H, Zhao C, Zhan F, Wu Z, Li H, Yang M, Xu J, Wei W, Wang Y, Shi J, Qu J, Wang Q, Leng X, Tian X, Zhao Y, Zeng X. POS0754 DEVELOPMENT OF A RISK PREDICTION MODEL FOR VENOUS THROMBOEMBOLISM IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS: THE SLE-VTE SCORE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Patients with systemic lupus erythematosus (SLE) have a substantially increased risk of venous thromboembolism (VTE). An individual VTE risk assessment is important to ensure that all patients are assessed and given adequate thromboprophylaxis.Objectives:We conducted this study to develop a risk score for VTE in patients with SLE.Methods:Patients with SLE who participated in the Chinese SLE Treatment and Research group were enrolled in this study. Patient baseline information and clinical laboratory indicators were obtained, and VTE events were recorded every 3-6 months during follow-up visits. The risk prediction model was created and internally validated using the bootstrap methods, and a scoring system was established (Figure 1).Figure 1.Flow chart of study design.Results:Out of 4,502 patients included in this study, 135 had a VTE event. After univariate analysis and Lasso regression, the following 11 variables were identified and included in the risk prediction model: male sex, age, BMI ≥25 kg/m2, hyperlipidemia, hypoalbuminemia, hsCRP>3 mg/L, renal involvement, nervous system involvement, anti-β2-glycoprotein I antibody positivity, lupus anticoagulant positivity, and no use of hydroxychloroquine. The AUC for the SLE-VTE score (Table 1) was 0.947 (95% CI, 0.9249-0.9694). The SLE-VTE score’s sensitivity and specificity with the optimal cutoff value of 13 were 0.919 and 0.881, respectively. The SLE-VTE score was superior to the GAPSS system in predicting the risk of VTE in patients with SLE (AUC= 0.947 vs. 0.680, P< 0.001; integrated discrimination improvement (IDI)= 0.6652, P< 0.001; net reclassification improvement (NRI)= 0.6652, P< 0.001).Table 1.Final multivariable analysis for venous thromboembolism risk in patients with SLE β coefficientsOdds ratio* (95% CI)P-valuePoints in scoring systemMale0.6211.86(0.953-3.503)0.0612Age at study entry(≥50)0.8372.308(1.339-3.915)0.0023BMI02(kg/m20.7922.209(1.333-3.627)0.0023Hyperlipemia0.8382.313(1.246-4.166)0.0063Hypoalbuminemia2.1638.697(5.185-14.794)< 0.0017hsCRP>3 mg/L1.4524.272(2.618-6.968)< 0.0015Anti β2GPI1.0132.754(1.543-4.853)0.0013LA1.5594.752(2.799-8.072)< 0.0015Nervous system2.38210.832(6.163-18.998)< 0.0018Lupus nephritis0.8352.305(1.414-3.756)0.0013No use of hydroxychloroquine1.7715.876(3.722-9.401)< 0.0016BMI: body mass index; hsCRP: Hypersensitive c-reactive protein; ACL: anticardiolipin, antiβ2GPI: anti-β2-glycoprotein I, LA: lupus anticoagulantm;Values in bold are statistically significant at p <0.05.Conclusion:Various factors are related to the occurrence of VTE in patients with SLE. The proposed SLE-VTE risk score can accurately predict the risk of VTE and help identify SLE patients with a high risk of VTE who may benefit from thromboprophylaxis.References:[1]Ramirez GA, Efthymiou M, Isenberg DA, Cohen H. Under crossfire: thromboembolic risk in systemic lupus erythematosus. Rheumatology. 2018;58:940-952.[2]Chung WS, Lin CL, Chang SN, Lu CC, Kao CH. Systemic lupus erythematosus increases the risks of deep vein thrombosis and pulmonary embolism: a nationwide cohort study. J Thromb Haemost. 2014;12:452-458.[3]Liew NC, Alemany GV, Angchaisuksiri P, et al. Asian venous thromboembolism guidelines: updated recommendations for the prevention of venous thromboembolism. Int Angiol. 2017;36:1.[4]Savino S, Giovanni S, Veronica M, Dario R, Khamashta MA, Laura BM. GAPSS: the Global Anti-Phospholipid Syndrome Score. Rheumatology. 2013:8.[5]Konstantinides SV, Meyer G, Becattini C, et al. 2019 ESC Guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS). Eur Heart J. 2020;41:543-603.[6]Moghadamyeghaneh Z, Hanna MH, Carmichael JC, Nguyen NT, Stamos MJ. A Nationwide Analysis of Postoperative Deep Vein Thrombosis and Pulmonary Embolism in Colon and Rectal Surgery. J Gastrointest Surg. 2014;18:2169-2177.Disclosure of Interests:None declared
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Chen S, Zhu Q, Xiao Y, Wu C, Jiang Z, Liu L, Qu J. Clinical and etiological analysis of co-infections and secondary infections in COVID-19 patients: An observational study. Clin Respir J 2021; 15:815-825. [PMID: 33818909 PMCID: PMC8250518 DOI: 10.1111/crj.13369] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/05/2021] [Accepted: 04/02/2021] [Indexed: 12/23/2022]
Abstract
Background Co‐infections, secondary bacterial or fungal infections, are important risk factors for poor outcomes in viral infections. The prevalence of co‐infection and secondary infection in patients infected with SARS‐CoV‐2 is not well understood. Aims To investigate the role of co‐infections and secondary infections in disease severity of hospitalized individuals with COVID‐19. Materials and Methods A retrospective study was carried out between 11 January 2020 and 1 March 2020 among 408 laboratory confirmed COVID‐19 patients in China. These patients were divided into three groups based on disease severity: mild or moderate, severe, or critically ill. Microbiological pathogens in blood, urine, and respiratory tract specimens were detected by the combination of culture, serology, polymerase chain reaction, and metagenomic next‐generation sequencing (mNGS). Results The median age of participants was 48 years (IQR 34–60 years). Fifty‐two patients (12.7%) had at least one additional pathogen, 8.1% were co‐infected, and 5.1% had a secondary infection. There were 13 Mycoplasma pneumoniae cases, 8 Haemophilus influenzae cases, 8 respiratory viruses, and 3 Streptococcus pneumoniae cases, primarily detected in mild and moderate COVID‐19 patients. Hospital‐acquired infection pathogens were more common in critically ill patients. Compared to those without additional pathogens, patients with co‐infections and/or secondary infections were more likely to receive antibiotics (p < 0.001) and have elevated levels of d‐dimer (p = 0.0012), interleukin‐6 (p = 0.0027), and procalcitonin (p = 0.0002). The performance of conventional culture was comparable with that of mNGS in diagnosis of secondary infections. Conclusion Co‐infections and secondary infections existed in hospitalized COVID‐19 patients and were relevant to the disease severity. Screening of common respiratory pathogens and hospital infection control should be strengthened.
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Affiliation(s)
- Shuyan Chen
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Qing Zhu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Yanyu Xiao
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Chi Wu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zhaofang Jiang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Lei Liu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
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29
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Song D, Jiang JH, Chen YZ, Zhou WH, Zhang SD, Ye C, Liang YB, Qu J. [Quality of life of patients with primary open-angle glaucoma based on EQ-5D in Wenzhou]. Zhonghua Yan Ke Za Zhi 2021; 57:207-214. [PMID: 33721960 DOI: 10.3760/cma.j.cn112142-20201020-00693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the quality of life of patients with primary open-angle glaucoma (POAG) and its related factors in Wenzhou. Methods: Cross-sectional analysis. A total of 339 POAG patients diagnosed in the Wenzhou glaucoma progression study conducted in the Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University from March 2014 to October 2019 were included. Quality of life of POAG patients was assessed by EQ-5D including the visual analogue scale (VAS). The effects of gender, age, visual field loss (VFL), family history of glaucoma, hypertension, diabetes, migraine, sleep quality, and amateur exercise on the quality of life were analyzed. The utility value (UV) and VAS score were expressed as the median (P25, P75), and Mann-Whitney U was used for the comparison between two groups. Kruskal-Wallis H was performed to compare the differences among multiple groups. Results: A total of 339 POAG patients were included in the study; 164 were males (48.4%), and 175 were females (51.6%). The mean age was (63±10) years. Thirty-four patients (10.0%) had received medication (including one with combined surgical treatment), while the remaining 305 patients (90.0%) had received no anti-glaucoma treatment. Among the patients, 10.5% (32/305) had no VFL, 68.9% (210/305) had mild VFL, 17.0% (52/305) had moderate VFL, and 3.6% (11/305) had severe VFL. In all patients, the median of UV was 1.000 (1.000, 1.000), the mean of UV was 0.964, and the median of VAS score was 80 (75, 90), the mean of VAS score was 81.58. Anxiety or depression and pain or discomfort occurred in 45.7% (43/94) and 34.1% (32/94), respectively, of POAG patients with decreased UVs, as well as mobility constraints in 13.8 % (13/94) and usual activity constraints in 6.4% (6/94). The median of UV of the eye with a better visual field in the group without VFL or with mild or moderate VFL was 1.000 (1.000, 1.000), and in the group with severe VFL was 1.000 (0.862, 1.000), but there was no significant difference in the UV and the VAS score of the eye with a better visual field among groups with different degrees of VFL (both P>0.05). There was statistically significant difference in the UV among groups with different sleep qualities (H=17.465; P<0.01). Using pairwise comparison, the median of UV of the very good sleep group was 1.000 (1.000, 1.000), significantly different to the slightly poor sleep group 1.000 (0.866, 1.000) (z=3.613; P<0.05). The median of UV in patients with migraine was 1.000 (0.875, 1.000), without migraine 1.000 (1.000, 1.000), and in patients with hypertension was 1.000 (0.875, 1.000), without hypertension 1.000 (1.000, 1.000), and in patients with diabetes was 1.000 (0.875, 1.000), without diabetes was 1.000 (1.000, 1.000), the difference was statistically significant (Z=-2.189, -3.864, -2.417; all P<0.05). The UV was not related to age, gender, family history of glaucoma, amateur exercise, alcohol and tobacco, and history of anti-glaucoma medication (all P>0.05). Conclusions: VFL is related to the UV of POAG patients in Wenzhou. Quality of life in mild POAG patients is good but decrease in advanced POAG patients. Sleep quality, systemic complications and physical or psychological discomfort impact on quality of life in POAG patients. (Chin J Ophthalmol, 2021, 57: 207-214).
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Affiliation(s)
- D Song
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J H Jiang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Y Z Chen
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - W H Zhou
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - S D Zhang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - C Ye
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Y B Liang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J Qu
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
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30
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Qu J, Cai Z, Liu Y, Duan X, Han S, Liu J, Zhu Y, Jiang Z, Zhang Y, Zhuo C, Liu Y, Liu Y, Liu L, Yang L. Persistent Bacterial Coinfection of a COVID-19 Patient Caused by a Genetically Adapted Pseudomonas aeruginosa Chronic Colonizer. Front Cell Infect Microbiol 2021; 11:641920. [PMID: 33816347 PMCID: PMC8010185 DOI: 10.3389/fcimb.2021.641920] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/08/2021] [Indexed: 12/20/2022] Open
Abstract
Pseudomonas aeruginosa is a biofilm-forming opportunistic pathogen which causes chronic infections in immunocompromised patients and leads to high mortality rate. It is identified as a common coinfecting pathogen in COVID-19 patients causing exacerbation of illness. In our hospital, P. aeruginosa is one of the top coinfecting bacteria identified among COVID-19 patients. We collected a strong biofilm-forming P. aeruginosa strain displaying small colony variant morphology from a severe COVID-19 patient. Genomic and transcriptomic sequencing analyses were performed with phenotypic validation to investigate its adaptation in SARS-CoV-2 infected environment. Genomic characterization predicted specific genomic islands highly associated with virulence, transcriptional regulation, and DNA restriction-modification systems. Epigenetic analysis revealed a specific N6-methyl adenine (m6A) methylating pattern including methylation of alginate, flagellar and quorum sensing associated genes. Differential gene expression analysis indicated that this isolate formed excessive biofilm by reducing flagellar formation (7.4 to 1,624.1 folds) and overproducing extracellular matrix components including CdrA (4.4 folds), alginate (5.2 to 29.1 folds) and Pel (4.8–5.5 folds). In summary, we demonstrated that P. aeuginosa clinical isolates with novel epigenetic markers could form excessive biofilm, which might enhance its antibiotic resistance and in vivo colonization in COVID-19 patients.
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Affiliation(s)
- Jiuxin Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zhao Cai
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Yumei Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Xiangke Duan
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Shuhong Han
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Jihong Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China.,Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Yuao Zhu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Zhaofang Jiang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Yingdan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Chao Zhuo
- The State Key Laboratory of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yang Liu
- Medical Research Center, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Yingxia Liu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China.,Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Lei Liu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China.,Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China.,Shenzhen Key Laboratory of Gene Regulation and Systems Biology, Southern University of Science and Technology, Shenzhen, China
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Huang ZX, Qu J, Zhou YK, Li YX, Huo MR, Li C, Huang Q, Zhou B, Li YC. [The efficacy of hemostatic powder for chronic rhinosinusitis in endoscopic sinus surgery: a prospective, randomised, controlled and single blinded clinical trial]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:144-149. [PMID: 33548944 DOI: 10.3760/cma.j.cn115330-20200814-00673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the efficacy and patient comfort of absorbable hemostatic powder after endoscopic sinus surgery (ESS). Methods: A total of 21 (17 males, 4 females) patients with an average age of 42(ranging from 18 to 65) underwent bilateral ESS for chronic rhinosinusitis(CRS) in Beijing Tongren Hospital, Capital Medical University between October 2015 and July 2019 were enrolled to compare the effect of absorbable hemostasis powder with Nasopore using an intrapatient control design. A randomized controlled trial was conducted in the left and right nasal cavities of the same patient. If hemostatic powder was applied in the experiment nasal cavity, the Nasopore was applied in the control nasal cavity. The mean preoperative sinus computed tomography (CT) score was 6.25. All patients competed for symptom diaries using a visual analog scale (VAS, score out of 10) at baseline, through 1, 7, 14 and 30 days. Outcomes including bleeding, facial pain, nasal obstruction, nasal discharges using VAS were recorded separately for both sides. Postoperative endoscopic scores were also investigated. SPSS 22 and Graphpad prism 8.0 statistical softwares were used for the analysis. Paired t-test or nonparametric test was used between the test side and the control side. The difference was statistically significant (P<0.05). Results: The bleeding score and total nasal symptom VAS scores at postoperative days (POD) 1, 7, 14 and 30 were not significantly different(t=1.341, 0.552, 0.631, 0.158, all P>0.05;t=0.944, 1.471, 1.612, 2.251, all P>0.05). There was no significant difference between absorbable hemostasis powder and Nasopore side on POD 1, 7, 14 and 30 in terms of each nasal symptom VAS scores(all P>0.05). On POD 1, 7 and 14, the packing material degeneration scores of the absorbable hemostasis powder side were significantly lower than those of the Nasopore side [(1.33±0.21)vs(2.00±0.00),(0.38±0.18) vs (1.95±0.22), 0 vs (1.80±0.13), all P<0.01]. There were significant differences between absorbable hemostasis powder and Nasopore side on POD 1, 7, 14 and 30 in terms of endoscopic scores (edema, crusting, discharges, scar, polyps and material degeneration, t=3.07, 7.00, 6.41, 2.69, all P<0.05). Conclusions: The absorbable hemostasis powder and Nasopore has similar postoperative hemostasis effect. The absorbable hemostasis powder is rapidly cleared and without negative effects on mucosal wound healing 14 days postoperatively.
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Affiliation(s)
- Z X Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J Qu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y K Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y X Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M R Huo
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Q Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - B Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Zou J, Kou SH, Xie R, VanNieuwenhze MS, Qu J, Peng B, Zheng J. Non-walled spherical Acinetobacter baumannii is an important type of persister upon β-lactam antibiotic treatment. Emerg Microbes Infect 2021; 9:1149-1159. [PMID: 32419626 PMCID: PMC7448848 DOI: 10.1080/22221751.2020.1770630] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bacterial persistence is one of the major causes of antibiotic treatment failure and the step stone for antibiotic resistance. However, the mechanism by which persisters arise has not been well understood. Maintaining a dormant state to prevent antibiotics from taking effect is believed to be the fundamental mechanistic basis, and persisters normally maintain an intact cellular structure. Here we examined the morphologies of persisters in Acinetobacter baumannii survived from the treatment by three major classes of antibiotics (i.e. β-lactam, aminoglycoside, and fluoroquinolone) with microcopy and found that a fraction of enlarged spherical bacteria constitutes a major sub-population of bacterial survivors from β-lactam antibiotic treatment, whereas survivors from the treatment of aminoglycoside and fluoroquinolone were less changed morphologically. Further studies showed that these spherical bacteria had completely lost their cell wall structures but could survive without any osmoprotective reagent. The spherical bacteria were not the viable-but-non-culturable cells and they could revive upon the removal of β-lactam antibiotics. Importantly, these non-walled spherical bacteria also persisted during antibiotic therapy in vivo using Galleria mellonella as the infection model. Additionally, the combinational treatment on A. baumannii by β-lactam and membrane-targeting antibiotic significantly enhanced the killing efficacy. Our results indicate that in addition to the dormant, structure intact persisters, the non-wall spherical bacterium is another important type of persister in A. baumannii. The finding suggests that targeting the bacterial cell membrane during β-lactam chemotherapy could enhance therapeutic efficacy on A. baumannii infection, which might also help to reduce the resistance development of A. baumannii.
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Affiliation(s)
- Jin Zou
- Faculty of Health Sciences, University of Macau, Macau SAR, People's Republic of China
| | - Si-Hoi Kou
- Faculty of Health Sciences, University of Macau, Macau SAR, People's Republic of China
| | - Ruiqiang Xie
- Faculty of Health Sciences, University of Macau, Macau SAR, People's Republic of China
| | | | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, People's Republic of China
| | - Bo Peng
- School of Life Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Macau SAR, People's Republic of China.,Institute of Translational Medicine, University of Macau, Macau SAR, People's Republic of China
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Qu J, Wu C, Li X, Zhang G, Jiang Z, Li X, Zhu Q, Liu L. Profile of Immunoglobulin G and IgM Antibodies Against Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Clin Infect Dis 2020; 71:2255-2258. [PMID: 32337590 PMCID: PMC7197626 DOI: 10.1093/cid/ciaa489] [Citation(s) in RCA: 221] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/23/2020] [Indexed: 01/08/2023] Open
Abstract
We profiled the serological responses to Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) nucleocapsid (N) protein and spike (S) glycoprotein. The majority of the patients developed robust antibody responses between 17 and 23 days after illness onset. Delayed, but stronger antibody responses were observed in critical patients.
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Affiliation(s)
- Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Chi Wu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Xiaoyong Li
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Guobin Zhang
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zhaofang Jiang
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Xiaohe Li
- Department of Infectious Diseases, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Qing Zhu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Lei Liu
- The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
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Zhang W, Zhang Z, Ye Y, Luo Y, Pan S, Qi H, Yu Z, Qu J. Lymphocyte percentage and hemoglobin as a joint parameter for the prediction of severe and nonsevere COVID-19: a preliminary study. Ann Transl Med 2020; 8:1231. [PMID: 33178763 PMCID: PMC7607120 DOI: 10.21037/atm-20-6001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Coronavirus disease 2019 (COVID-19) has spread rapidly around the world since December, 2019. This study aimed to identify parameters in routine blood tests that could be used to evaluate the severity of coronavirus disease 2019 (COVID-19) and, thus, assist with the clinical prediction of the extent of progression. Methods This retrospective study analyzed the epidemiological, clinical symptom, and laboratory examination data of 159 patients diagnosed with COVID-19. The percentage of lymphocytes (Lym%) and hemoglobin (HGB) were integrated into a joint parameter, Lym% & HGB, through binary logistic regression. Results Individually, Lym% and HGB decreased gradually with disease progression whereas the joint parameter Lym% & HGB increased gradually with disease progression. When Lym%, HGB, and Lym% & HGB were used to predict the severity of COVID-19, the area under the receiver operating characteristic (ROC) curve (AUC) was 0.89, 0.79, and 0.92, respectively. The dynamic change curves showed that Lym% and HGB continued to decline while Lym% & HGB continued to increase with disease progression in patients with severe COVID. The change in Lym% & HGB was more prominent than those in Lym% and HBG. Conclusions The joint parameter Lym% & HGB could serve as an effective tool for differentiating severe and nonsevere COVID-19, and its sensitivity and specificity are higher than those of Lym% or HGB alone.
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Affiliation(s)
- Wenping Zhang
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Zhongming Zhang
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Yi Ye
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Yanting Luo
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Shiyao Pan
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Huan Qi
- Hematology Application and Research Department, Shenzhen Mindray Bio-Medical Electronic Co., Ltd., Shenzhen, China
| | - Zhiyong Yu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
| | - Jiuxin Qu
- Department of Clinical Laboratory, The Third People's Hospital of Shenzhen, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen, China
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Cai Q, Huang D, Yu H, Zhu Z, Xia Z, Su Y, Li Z, Zhou G, Gou J, Qu J, Sun Y, Liu Y, He Q, Chen J, Liu L, Xu L. COVID-19: Abnormal liver function tests. J Hepatol 2020; 73:566-574. [PMID: 32298767 PMCID: PMC7194951 DOI: 10.1016/j.jhep.2020.04.006] [Citation(s) in RCA: 595] [Impact Index Per Article: 148.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/07/2020] [Accepted: 04/07/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Recent data on the coronavirus disease 2019 (COVID-19) outbreak caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has begun to shine light on the impact of the disease on the liver. But no studies to date have systematically described liver test abnormalities in patients with COVID-19. We evaluated the clinical characteristics of COVID-19 in patients with abnormal liver test results. METHODS Clinical records and laboratory results were obtained from 417 patients with laboratory-confirmed COVID-19 who were admitted to the only referral hospital in Shenzhen, China from January 11 to February 21, 2020 and followed up to March 7, 2020. Information on clinical features of patients with abnormal liver tests were collected for analysis. RESULTS Of 417 patients with COVID-19, 318 (76.3%) had abnormal liver test results and 90 (21.5%) had liver injury during hospitalization. The presence of abnormal liver tests became more pronounced during hospitalization within 2 weeks, with 49 (23.4%), 31 (14.8%), 24 (11.5%) and 51 (24.4%) patients having alanine aminotransferase, aspartate aminotransferase, total bilirubin and gamma-glutamyl transferase levels elevated to more than 3× the upper limit of normal, respectively. Patients with abnormal liver tests of hepatocellular type or mixed type at admission had higher odds of progressing to severe disease (odds ratios [ORs] 2.73; 95% CI 1.19-6.3, and 4.44, 95% CI 1.93-10.23, respectively). The use of lopinavir/ritonavir was also found to lead to increased odds of liver injury (OR from 4.44 to 5.03, both p <0.01). CONCLUSION Patients with abnormal liver tests were at higher risk of progressing to severe disease. The detrimental effects on liver injury mainly related to certain medications used during hospitalization, which should be monitored and evaluated frequently. LAY SUMMARY Data on liver tests in patients with COVID-19 are scarce. We observed a high prevalence of liver test abnormalities and liver injury in 417 patients with COVID-19 admitted to our referral center, and the prevalence increased substantially during hospitalization. The presence of abnormal liver tests and liver injury were associated with the progression to severe pneumonia. The detrimental effects on liver injury were related to certain medications used during hospitalization, which warrants frequent monitoring and evaluation for these patients.
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Affiliation(s)
- Qingxian Cai
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Deliang Huang
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Hong Yu
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Zhibin Zhu
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Zhang Xia
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Yinan Su
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Zhiwei Li
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Guangde Zhou
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Jizhou Gou
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Jiuxin Qu
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Yan Sun
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Yingxia Liu
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Qing He
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China
| | - Jun Chen
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China.
| | - Lei Liu
- National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, 518100, China.
| | - Lin Xu
- School of Public Health, Sun Yat-sen University. Guangzhou, Guangdong, China.
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Yin H, Wang S, Qu J, Zhou F, Wang C, Cao B. Long-term prognosis of adolescent and middle-aged Chinese patients with low-medium risk community-acquired pneumonia: A cohort study. Clin Respir J 2020; 14:933-939. [PMID: 32474995 DOI: 10.1111/crj.13224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 04/22/2020] [Accepted: 05/22/2020] [Indexed: 01/06/2023]
Abstract
INTRODUCTION The long-term mortality rate in adolescent and middle-aged patients with low-medium risk community-acquired pneumonia (CAP) remains unelucidated. OBJECTIVE Understanding the long-term mortality rate in adolescent and middle-aged patients with low-medium risk CAP in Beijing, China, to provide a basis for the long-term management of CAP patient. METHODS A follow-up survey was conducted telephonically from December 2017 to January 2018 to assess the survival status among 808 patients from a CAP-China cohort enrolled from 10 general hospitals in Beijing between November 2010 and April 2012. The all-cause mortality rate was determined and Cox's proportional hazard model was performed to identify potential factors predicting mortality. RESULTS Among the 808 patients, the mean age (SD) was 45.4 (19.6) year-old and the median (IQR) pneumonia severity index (PSI) score was 42.0 (35.8). Survival status for a total of 426 (52.7%) were determined during the follow-up and the non-follow-up patients were with slightly larger PSI score. The mean age (SD) for the follow-up patients were 44.6 (18.7) year-old and the median (IQR) PSI score was 42.0 (33.3). Over a median of 7 years, 32 participants died and the cumulative 1-, 3-, 5- and 7-year all-cause mortality rates were 1.6%, 4.2%, 5.9% and 7.5%, respectively. The average annual standardized mortality rate among the study participants was 9.79‰, which was significantly higher than the mortality rate of 5.20‰ among Beijing residents in 2016. Multivariable Cox proportional hazards analyses revealed that age, comorbidity and PSI were independent prognostic factors associated with long-term mortality, with hazard ratios of 4.953 (95% confidence interval [CI]3.270-7.502), 2.393 (95% CI 1.148-4.985) and 3.553 (95% CI 2.607-4.843), respectively. [Correction added on 20 August 2020, after first online publication: "9.79%" has been corrected to "9.79‰".] CONCLUSION: The long-term mortality rate is higher among patients with CAP compared with the age-adjusted general population in the same city. Age, comorbidity and initial PSI class are independently prognostic factors for the long-term mortality rate.
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Affiliation(s)
- Hongjun Yin
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,National Clinical Research Center for Respiratory Disease, Beijing, China.,Department of Infectious Diseases, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Shengfeng Wang
- Department of Epidemiology & Bio-statistics, School of Public Health, Peking University Health Science Center, Beijing, China
| | - Jiuxin Qu
- Clinical Laboratory, Third People's Hospital in Shenzhen City of Guangdong Province, Shenzhen, China
| | - Fei Zhou
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,National Clinical Research Center for Respiratory Disease, Beijing, China.,Clinical Center for Pulmonary Infections, Department of Respiratory Medicine, Capital Medical University, Beijing, China
| | - Chen Wang
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,National Clinical Research Center for Respiratory Disease, Beijing, China.,Clinical Center for Pulmonary Infections, Department of Respiratory Medicine, Capital Medical University, Beijing, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Beijing, China.,Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Cao
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,National Clinical Research Center for Respiratory Disease, Beijing, China.,Clinical Center for Pulmonary Infections, Department of Respiratory Medicine, Capital Medical University, Beijing, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Beijing, China.,Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Zhang S, Qu J, Wang L, Li M, Zeng X. AB0147 GENE EXPRESSION PROFILES OF PRIMARY SJÖGREN’S SYNDROME ASSOCIATED THROMBOCYTOPENIA IN B-LYMPHOCYTE USING HIGH-THROUGHPUT SEQUENCING. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Primary Sjögren’s syndrome(pSS) is a classical systemic autoimmune disease. Thrombocytopenia is one of the hematological manifestations of pSS with great challenges in clinic.Objectives:To identify the candidate genes and functionally enriched pathways in the immune genesis and progression of primary Sjögren’s syndrome (pSS) associated thrombocytopenia.Methods:High-throughput sequencing was performed on 3 patients with pSS, 3 patients with pSS associated thrombocytopenia and 3 healthy individuals. The differentially expressed genes (DEGs) were identified, and function enrichment analyses were processed. The protein-protein interaction network (PPI) was constructed, followed by calculation of topological characteristics and sub-module analysis in order to obtain hub DEGs. The expression of some hub genes was verified by Real-Time PCR in 24 pSS patients.Results:A total of 19 DEGs were identified. The enriched functions and pathway of the DEGs include Toll-like receptor signaling pathway, Salmonella infection, Viral protein interaction with cytokine and cytokine receptor, NF-kappa B signaling pathway and Human cytomegalovirus infection. Seven hub genes (TNF, IL1B, CXCL8, CCL3, CCL4, CCL3L1, CCL4L1) were identified and pathway enrichment analysis revealed that these genes were mainly enriched in toll-like receptor pathway. The relative expression of the CXCL8 mRNA in B-lymphocytes in patients with pSS associated thrombocytopenia was higher than that in the pSS without thrombocytopenia group. No differences were observed in the IL-1β or TNFα expression between these two groups.Conclusion:PSS associated thrombocytopenia might be a subset characterized by a systemic inflammatory state. The identification of upregulated genes involved in thrombocytopenia of pSS provides insight in disease pathogenesis and opens avenues for the design of novel therapeutic strategies.References:[1] Fox RI: Sjögren’s syndrome. Lancet, 2005; 366: 321–31.[2]Baldini C, Ferro F, Elefante E, Bombardieri S. Biomarkers for Sjögren’s syndrome. Biomark Med. 2018;12(3):275-286.[3]Hua F, Li Y, Zhao X, et al. The expression profile of toll-like receptor signaling molecules in CD19(+) B cells from patients with primary immune thrombocytopenia. Immunol Lett. 2016, 176:28-35.Table 1.Differentially expressed genes among patients with pSS associated thrombocytopenia, pSS without thrombocytopenia, and healthy controlsGeneLogFCin group2FDRin group 2LogFCin group1FDRin group 1TNF4.961.29E-034.554.98E-05CXCL88.881.29E-039.743.23E-05CCL35.654.54E-035.611.70E-05G0S27.384.54E-0312.331.09E-05LILRA38.427.23E-0310.264.31E-05IER35.449.53E-037.712.98E-06DUSP23.509.53E-033.918.12E-05TNFAIP32.639.53E-032.241.36E-03CCL44.531.19E-025.423.35E-06CCL4L26.721.40E-028.925.19E-05CCL4L14.721.40E-025.943.94E-06IL1B5.541.66E-0210.233.27E-06METRNL3.551.80E-024.022.08E-04ID22.932.43E-023.786.57E-03PER12.332.99E-022.427.68E-04EGR12.983.09E-022.931.80E-04CCL3L15.863.20E-026.665.94E-03FFAR24.944.09E-028.401.34E-05FOSB3.234.86E-023.491.39E-03Figure 1.DEGs in pSS associated thrombocytopenia. 183 DEGs (31 up- and 151 down- regulated) between pSS patients with and without thrombocytopenia(a, c). 459 DEGs between pSS associated thrombocytopenia patients and healthy individuals were identified (2up- and 457 down- regulated) (b, d). The overlap among the 2 groups contained 19 genes represents the DEGs specified in pSS associated thrombocytopenia (e).Figure 2.KEGG pathway analysis.Acknowledgments:The authors apologize to all colleagues whose work has not been separately cited or discussed here due to limitations in space or knowledge.Disclosure of Interests:SHUO ZHANG: None declared, Jingge Qu: None declared, Li Wang: None declared, Mengtao Li: None declared, Xiaofeng Zeng Consultant of: MSD Pharmaceuticals
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Shen C, Wang Z, Zhao F, Yang Y, Li J, Yuan J, Wang F, Li D, Yang M, Xing L, Wei J, Xiao H, Yang Y, Qu J, Qing L, Chen L, Xu Z, Peng L, Li Y, Zheng H, Chen F, Huang K, Jiang Y, Liu D, Zhang Z, Liu Y, Liu L. Treatment of 5 Critically Ill Patients With COVID-19 With Convalescent Plasma. JAMA 2020; 323:1582-1589. [PMID: 32219428 PMCID: PMC7101507 DOI: 10.1001/jama.2020.4783] [Citation(s) in RCA: 1549] [Impact Index Per Article: 387.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IMPORTANCE Coronavirus disease 2019 (COVID-19) is a pandemic with no specific therapeutic agents and substantial mortality. It is critical to find new treatments. OBJECTIVE To determine whether convalescent plasma transfusion may be beneficial in the treatment of critically ill patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. DESIGN, SETTING, AND PARTICIPANTS Case series of 5 critically ill patients with laboratory-confirmed COVID-19 and acute respiratory distress syndrome (ARDS) who met the following criteria: severe pneumonia with rapid progression and continuously high viral load despite antiviral treatment; Pao2/Fio2 <300; and mechanical ventilation. All 5 were treated with convalescent plasma transfusion. The study was conducted at the infectious disease department, Shenzhen Third People's Hospital in Shenzhen, China, from January 20, 2020, to March 25, 2020; final date of follow-up was March 25, 2020. Clinical outcomes were compared before and after convalescent plasma transfusion. EXPOSURES Patients received transfusion with convalescent plasma with a SARS-CoV-2-specific antibody (IgG) binding titer greater than 1:1000 (end point dilution titer, by enzyme-linked immunosorbent assay [ELISA]) and a neutralization titer greater than 40 (end point dilution titer) that had been obtained from 5 patients who recovered from COVID-19. Convalescent plasma was administered between 10 and 22 days after admission. MAIN OUTCOMES AND MEASURES Changes of body temperature, Sequential Organ Failure Assessment (SOFA) score (range 0-24, with higher scores indicating more severe illness), Pao2/Fio2, viral load, serum antibody titer, routine blood biochemical index, ARDS, and ventilatory and extracorporeal membrane oxygenation (ECMO) supports before and after convalescent plasma transfusion. RESULTS All 5 patients (age range, 36-65 years; 2 women) were receiving mechanical ventilation at the time of treatment and all had received antiviral agents and methylprednisolone. Following plasma transfusion, body temperature normalized within 3 days in 4 of 5 patients, the SOFA score decreased, and Pao2/Fio2 increased within 12 days (range, 172-276 before and 284-366 after). Viral loads also decreased and became negative within 12 days after the transfusion, and SARS-CoV-2-specific ELISA and neutralizing antibody titers increased following the transfusion (range, 40-60 before and 80-320 on day 7). ARDS resolved in 4 patients at 12 days after transfusion, and 3 patients were weaned from mechanical ventilation within 2 weeks of treatment. Of the 5 patients, 3 have been discharged from the hospital (length of stay: 53, 51, and 55 days), and 2 are in stable condition at 37 days after transfusion. CONCLUSIONS AND RELEVANCE In this preliminary uncontrolled case series of 5 critically ill patients with COVID-19 and ARDS, administration of convalescent plasma containing neutralizing antibody was followed by improvement in their clinical status. The limited sample size and study design preclude a definitive statement about the potential effectiveness of this treatment, and these observations require evaluation in clinical trials.
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Affiliation(s)
- Chenguang Shen
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Zhaoqin Wang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Fang Zhao
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yang Yang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jinxiu Li
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jing Yuan
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Fuxiang Wang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Delin Li
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
- Laboratory of Protein Engineering and Vaccines,
Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences (CAS),
Tianjin, China
| | - Minghui Yang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Li Xing
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jinli Wei
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Haixia Xiao
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
- Laboratory of Protein Engineering and Vaccines,
Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences (CAS),
Tianjin, China
| | - Yan Yang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jiuxin Qu
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Ling Qing
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Li Chen
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Zhixiang Xu
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Ling Peng
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yanjie Li
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Haixia Zheng
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Feng Chen
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Kun Huang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yujing Jiang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Dongjing Liu
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Zheng Zhang
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yingxia Liu
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Lei Liu
- Shenzhen Key Laboratory of Pathogen and
Immunity, National Clinical Research Center for Infectious Disease, State Key
Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital
Affiliated to Southern University of Science and Technology, Shenzhen, China
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Qu J, Yang R, Song L, Kamel IR. Atypical lung feature on chest CT in a lung adenocarcinoma cancer patient infected with COVID-19. Ann Oncol 2020; 31:825-826. [PMID: 32165205 PMCID: PMC7126344 DOI: 10.1016/j.annonc.2020.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/29/2022] Open
Affiliation(s)
- J Qu
- Department of Radiology, the Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China.
| | - R Yang
- Department of Medical Imaging, Henan Chest Hospital, Zhengzhou, Henan, China
| | - L Song
- Department of Radiology, the Sixth People Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - I R Kamel
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Chepurna OM, Yakovliev A, Ziniuk R, Nikolaeva OA, Levchenko SM, Xu H, Losytskyy MY, Bricks JL, Slominskii YL, Vretik LO, Qu J, Ohulchanskyy TY. Core-shell polymeric nanoparticles co-loaded with photosensitizer and organic dye for photodynamic therapy guided by fluorescence imaging in near and short-wave infrared spectral regions. J Nanobiotechnology 2020; 18:19. [PMID: 31973717 PMCID: PMC6979398 DOI: 10.1186/s12951-020-0572-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/07/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Biodistribution of photosensitizer (PS) in photodynamic therapy (PDT) can be assessed by fluorescence imaging that visualizes the accumulation of PS in malignant tissue prior to PDT. At the same time, excitation of the PS during an assessment of its biodistribution results in premature photobleaching and can cause toxicity to healthy tissues. Combination of PS with a separate fluorescent moiety, which can be excited apart from PS activation, provides a possibility for fluorescence imaging (FI) guided delivery of PS to cancer site, followed by PDT. RESULTS In this work, we report nanoformulations (NFs) of core-shell polymeric nanoparticles (NPs) co-loaded with PS [2-(1-hexyloxyethyl)-2-devinyl pyropheophorbide-a, HPPH] and near infrared fluorescent organic dyes (NIRFDs) that can be excited in the first or second near-infrared windows of tissue optical transparency (NIR-I, ~ 700-950 nm and NIR-II, ~ 1000-1350 nm), where HPPH does not absorb and emit. After addition to nanoparticle suspensions, PS and NIRFDs are entrapped by the nanoparticle shell of co-polymer of N-isopropylacrylamide and acrylamide [poly(NIPAM-co-AA)], while do not bind with the polystyrene (polySt) core alone. Loading of the NIRFD and PS to the NPs shell precludes aggregation of these hydrophobic molecules in water, preventing fluorescence quenching and reduction of singlet oxygen generation. Moreover, shift of the absorption of NIRFD to longer wavelengths was found to strongly reduce an efficiency of the electronic excitation energy transfer between PS and NIRFD, increasing the efficacy of PDT with PS-NIRFD combination. As a result, use of the NFs of PS and NIR-II NIRFD enables fluorescence imaging guided PDT, as it was shown by confocal microscopy and PDT of the cancer cells in vitro. In vivo studies with subcutaneously tumored mice demonstrated a possibility to image biodistribution of tumor targeted NFs both using HPPH fluorescence with conventional imaging camera sensitive in visible and NIR-I ranges (~ 400-750 nm) and imaging camera for short-wave infrared (SWIR) region (~ 1000-1700 nm), which was recently shown to be beneficial for in vivo optical imaging. CONCLUSIONS A combination of PS with fluorescence in visible and NIR-I spectral ranges and, NIR-II fluorescent dye allowed us to obtain PS nanoformulation promising for see-and-treat PDT guided with visible-NIR-SWIR fluorescence imaging.
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Affiliation(s)
- O M Chepurna
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - A Yakovliev
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - R Ziniuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - O A Nikolaeva
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - S M Levchenko
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - H Xu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - M Y Losytskyy
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - J L Bricks
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, 02094, Ukraine
| | - Yu L Slominskii
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, 02094, Ukraine
| | - L O Vretik
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine.
| | - J Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - T Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
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Jiang J, Cao Z, Qu J, Liu H, Han H, Cheng X. PD-1-expressing MAIT cells from patients with tuberculosis exhibit elevated production of CXCL13. Scand J Immunol 2020; 91:e12858. [PMID: 31833092 DOI: 10.1111/sji.12858] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/04/2019] [Accepted: 12/04/2019] [Indexed: 12/12/2022]
Abstract
To understand functional role of PD-1-expressing MAIT cells during tuberculosis infection in humans, sorted PD-1+ and PD-1- MAIT cells from pleural effusions of patients with pleural tuberculosis were subjected to transcriptome sequencing. PD-1-expressing MAIT cells were analysed by flow cytometry and their phenotypic and functional features were investigated. Transcriptome sequencing identified 144 genes that were differentially expressed between PD-1+ and PD-1- MAIT cells from tuberculous pleural effusions and CXCL13 was the gene with highest fold difference. The level of PD-1-expressing MAIT cells was associated with extent of TB infection in humans. PD-1-expressing MAIT cells had increased production of CXCL13 and IL-21 as determined by flow cytometry. PD-1high CXCR5- MAIT cells were significantly expanded in pleural effusions from patients with pleural tuberculosis as compared with those from peripheral blood of both patients with tuberculosis and healthy controls. Although PD-1high CXCR5- MAIT cells from tuberculous pleural effusions had reduced IFN-γ level and increased expression of Tim-3 and GITR, they showed activated phenotype and had higher glucose uptake and lipid content. It is concluded that PD-1-expressing MAIT cells had reduced IFN-γ level but increased production of both CXCL13 and IL-21.
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Affiliation(s)
- Jing Jiang
- Department of Laboratory Medicine, Shenzhen Third People's Hospital, and Second Affiliated Hospital, School of Medicine, Southern University of Science and Technology, and Affiliated Hospital, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Zhihong Cao
- Division of Research, Institute of Tuberculosis, The Eighth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jiuxin Qu
- Department of Laboratory Medicine, Shenzhen Third People's Hospital, and Second Affiliated Hospital, School of Medicine, Southern University of Science and Technology, and Affiliated Hospital, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Houming Liu
- Department of Laboratory Medicine, Shenzhen Third People's Hospital, and Second Affiliated Hospital, School of Medicine, Southern University of Science and Technology, and Affiliated Hospital, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Hongxing Han
- Department of Laboratory Medicine, Shenzhen Third People's Hospital, and Second Affiliated Hospital, School of Medicine, Southern University of Science and Technology, and Affiliated Hospital, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Xiaoxing Cheng
- Division of Research, Institute of Tuberculosis, The Eighth Medical Center, Chinese PLA General Hospital, Beijing, China
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Zhang D, Jin N, Sun W, Li X, Liu B, Xie Z, Qu J, Xu J, Yang X, Su Y, Tang S, Han H, Chen D, Ding J, Tan M, Huang M, Geng M. Correction: Phosphoglycerate mutase 1 promotes cancer cell migration independent of its metabolic activity. Oncogene 2020; 39:2451-2452. [PMID: 31900417 PMCID: PMC8075972 DOI: 10.1038/s41388-019-1148-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- D Zhang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - N Jin
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - W Sun
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - X Li
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - B Liu
- The Chemical Proteomics Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Z Xie
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Qu
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Xu
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - X Yang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Y Su
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - S Tang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - H Han
- Laboratory of Pharmaceutical Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - D Chen
- Laboratory of Pharmaceutical Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Ding
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - M Tan
- The Chemical Proteomics Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - M Huang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
| | - M Geng
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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Li C, Zhou B, Qu J, Sun XZ, Huang Q, Zhang GM, Wang MJ, Cui SJ. [Effect of anatomical changes of frontal recess and frontal sinus on airflow after nasalisation by image reconstruction and numerical simulation]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:805-812. [PMID: 31795540 DOI: 10.3760/cma.j.issn.1673-0860.2019.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To describe the influence of post-operative anatomical structure changes on nasal airflow characteristics by 3D reconstruction and numerical simulation in real cases after nasalisation with Draf Ⅲ so as to explore the correlation between the changes of anatomical structure and subjective symptoms as well as airflow characteristics. Methods: Ten patients underwent nasalization with Draf Ⅲ in Department of Rhinology in Beijing Tongren Hospital from 2006 to 2018 were selected retrospectively. Postoperative follow-up of all patients was more than 1 year. All patients had no abnormalities in their paranasal sinus CT scans and Lund-Kennedy scores were 0 except scar. VAS scores including nasal obstruction, stimulation in frontal sinus, and headache were collected at the same period. The control model was a normal person. Numerical simulation was used for calculating airflow characteristics in deep inspiratory period of both models. Independent sample Mann-Whitney U test and Spearman correlation test were used by software SPSS 22.0. Results: The airflow pressure in frontal sinus ostium was (7.21±1.39)×10(4) Pa (Mean±SD), which was lower than that in normal subjects (8.99×10(4) Pa) under deep inspiratory simulation. But, the velocities in frontal sinus ostium and frontal sinus were (40.10±2.46) m/s and (28.19±1.73) m/s respectively, which were higher than those in normal one (2.70 m/s, 0.73 m/s). The airflow patterns of the two models were basically similar. There was no significant difference in the opening size and volume of frontal sinus between different groups after grouped by three symptoms respectively. No correlation could be found between the opening size and volume of the frontal sinus with the appearance and severity of three subjective symptoms. Conclusions: The airflow pattern and distribution after nasalisation with Draf Ⅲ are like those of normal person. There is no correlation between the changes of anatomy in frontal recess and frontal sinus and nasal airflow characteristics as well as subjective symptoms.
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Affiliation(s)
- C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - B Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - J Qu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - X Z Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Q Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - G M Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Tianjin First Central Hospital, Tianjin 300192, China
| | - M J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - S J Cui
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
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Qu J, Hsiao TC, DePeters EJ, Zaccaria D, Snyder RL, Fadel JG. A goal programming approach for balancing diet costs and feed water use under different environmental conditions. J Dairy Sci 2019; 102:11504-11522. [PMID: 31587901 DOI: 10.3168/jds.2019-16543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/14/2019] [Indexed: 11/19/2022]
Abstract
Water is essential in livestock production systems. In typical dairy production systems, 90% of the total water used by a dairy farm is attributed to feed production. Theoretically, ration manipulation is a method to potentially reduce the irrigation water needed for feed crops without dramatically increasing diet costs. However, published quantitative studies on the relationship between feed production and water use that are integrated with linear programming models are scarce. The overall objective of this study was to develop an optimization framework that could achieve a balance between minimization of dietary costs and dietary irrigation water usage, and that could be used as a framework for future research and models for various livestock production systems. Weighted goal programming models were developed to minimize the dietary costs and irrigation water usage for a hypothetical cow under 8 different environmental scenarios. The environmental conditions used a 2 × 2 × 2 factorial design, including 2 atmospheric CO2 concentrations (400 and 550 ppm), 2 water years (dry and wet), and 2 irrigation methods (furrow and drip). A systematic weighting scheme was used to model the trade-off between minimizing diet cost and minimizing irrigation water use for feedstuffs. Each environmental condition generated a set of distinct diets, which each met the same nutrient requirements of the hypothetical cow but had a different water usage when the weighting scheme was changed from weighting minimum diet costs to minimum irrigation water usage. For water resource planning in areas of dairy production, this set of unique solutions provides the decision maker with different feeding options according to diet cost, water usage, and available feeds. As water was more constrained, dietary dry matter intake increased, concentrations of neutral detergent fiber, ether extract, and energy decreased, and the concentration of lignin increased because less nutritive but more water-saving feedstuffs were included in the diet. Mitigation costs of water usage were calculated from goal programming results and indicated that the potential value of water under water-limited conditions (e.g., in a drought region) was higher than that under water-sufficient conditions. However, a smaller increase in feed costs can initially significantly reduce water usage compared with that of a least-cost diet, which implies that the reduction of water usage through ration manipulation might be possible. This model serves as a framework for the study of irrigation water usage in dairy production and other livestock production systems and for decision-making processes involved in water resources planning in the broader area of animal production.
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Affiliation(s)
- J Qu
- Department of Animal Science, University of California, Davis 95616
| | - T C Hsiao
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - E J DePeters
- Department of Animal Science, University of California, Davis 95616
| | - D Zaccaria
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - R L Snyder
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - J G Fadel
- Department of Animal Science, University of California, Davis 95616.
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Shang S, Ye J, Dou W, Luo X, Qu J, Zhu Q, Zhang H, Wu J. Validation of Zero TE-MRA in the Characterization of Cerebrovascular Diseases: A Feasibility Study. AJNR Am J Neuroradiol 2019; 40:1484-1490. [PMID: 31467242 DOI: 10.3174/ajnr.a6173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/02/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE Zero TE-MRA is less sensitive to field heterogeneity, complex flow, and acquisition noise. This study aimed to prospectively validate the feasibility of zero TE-MRA for cerebrovascular diseases assessment, compared with TOF-MRA. MATERIALS AND METHODS Seventy patients suspected of having cerebrovascular disorders were recruited. Sound levels were estimated for each MRA subjectively and objectively in different modes. MRA image quality was estimated by 2 neuroradiologists. The degree of stenosis (grades 0-4) and the z-diameter of aneurysms (tiny group ≤3 mm and large group >3 mm) were measured for further quantitative analysis. CTA was used as the criterion standard. RESULTS Zero TE-MRA achieved significantly lower subjective perception and objective noise reduction (37.53%). Zero TE-MRA images showed higher signal homogeneity (3.29 ± 0.59 versus 3.04 ± 0.43) and quality of venous signal suppression (3.67 ± 0.47 versus 2.75 ± 0.46). The intermodality agreement was higher for zero TE-MRA than for TOF-MRA (zero TE, 0.90; TOF, 0.81) in the grading of stenosis. Zero TE-MRA had a higher correlation than TOF-MRA (zero TE, 0.84; TOF, 0.74) in the tiny group and a higher consistency with CTA (intraclass correlation coefficient, 0.83; intercept, -0.5084-1.1794; slope -0.4952 to -0.2093) than TOF-MRA (intraclass correlation coefficient, 0.64; intercept, 0.7000-2.6133; slope -1.0344 to -0.1923). Zero TE-MRA and TOF-MRA were comparable in the large group. Zero TE-MRA had more accurate details than TOF-MRA of AVM and Moyamoya lesions. CONCLUSIONS Compared with TOF-MRA, zero TE-MRA achieved more robust performance in depicting cerebrovascular diseases. Therefore, zero TE-MRA was shown to be a promising MRA technique for further routine application in the clinic in patients with cerebrovascular diseases.
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Affiliation(s)
- S Shang
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Ye
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - W Dou
- MR Research China (W.D., J.Q.), GE Healthcare, Beijing China
| | - X Luo
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Qu
- MR Research China (W.D., J.Q.), GE Healthcare, Beijing China
| | - Q Zhu
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - H Zhang
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Wu
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
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Abstract
Myopia prevention and control is an important health issue related to children and adolescents, general public physical fitness and national defense security. In 2018, General Secretary Xi Jinping gave instructions on students' myopia. Ministry of Education and other seven ministries and commissions issued the Implementation Plan of the Myopia Prevention and Control for Children and Adolescents. As the myopia prevalence continues to develop into an urgent situation, myopia prevention and control has become a national strategy. In the battle fighting against prevalent myopia, medical and scientific researchers, as professionals, play a key role in guiding the effective implementation of the project and coordinating among five parties including government, schools, medical institutions, families and individual students. It is of great significance to effectively prevent and control myopia for children and adolescents and to achieve the overall goal of prevention and control. This article summarizes the potential effective methods in myopia prevention and control, hoping to provide useful reference and help for the national prevention and control work. (Chin J Ophthalmol, 2019, 55: 81-85).
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Affiliation(s)
- J Qu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Engineering Research Center For Myopia Control and Management, Ministry of Education, Wenzhou 325000, China
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Yakovliev A, Ziniuk R, Wang D, Xue B, Vretik LO, Nikolaeva OA, Tan M, Chen G, Slominskii YL, Qu J, Ohulchanskyy TY. Hyperspectral Multiplexed Biological Imaging of Nanoprobes Emitting in the Short-Wave Infrared Region. Nanoscale Res Lett 2019; 14:243. [PMID: 31325079 PMCID: PMC6642248 DOI: 10.1186/s11671-019-3068-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/01/2019] [Indexed: 05/19/2023]
Abstract
Optical bioimaging with exogenous luminophores emitting in short-wave infrared spectral region (SWIR, ~ 1000-1700 nm) is a rapidly developing field, and the development of multiple SWIR-photoluminescent nanoprobes has recently been reported. In this regard, hyperspectral imaging (HSI), combined with unmixing algorithms, is a promising tool that can allow for efficient multiplexing of the SWIR-emitting nanoagents by their photoluminescence (PL) spectral profiles. The SWIR HSI technique reported here is developed to multiplex two types of nanoprobes: polymeric nanoparticles doped with organic dye (PNPs) and rare-earth doped fluoride nanoparticles (RENPs). Both types of nanoprobes exhibit PL in the same spectral range (~ 900-1200 nm), which hinders spectral separation of PL with optical filters and limits possibilities for their multiplexed imaging in biological tissues. By applying SWIR HSI, we exploited differences in the PL spectral profiles and achieved the spectrally selective and sensitive imaging of the PL signal from every type of nanoparticles. Unmixing of acquired data allowed for multiplexing of the spectrally overlapping nanoprobes by their PL profile. Both quantitative and spatial distribution for every type of nanoparticles were obtained from their mixed suspensions. Finally, the SWIR HSI technique with unmixing protocol was applied to in vivo imaging of mice subcutaneously injected with PNPs and RENPs. The applicability of hyperspectral techniques to multiplex nanoprobes in the in vivo imaging was successfully demonstrated.
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Affiliation(s)
- A. Yakovliev
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - R. Ziniuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - D. Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - B. Xue
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - L. O. Vretik
- Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - O. A. Nikolaeva
- Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - M. Tan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 People’s Republic of China
| | - G. Chen
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 People’s Republic of China
| | | | - J. Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - T. Y. Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
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Liang YB, Wu HX, Liao N, Li M, Zhang Q, Wang PJ, Zheng JW, Fang AW, Qu J. [Changing trends of topical anti-glaucoma medications in the Eye Hospital of Wenzhou Medical University during the past ten years]. Zhonghua Yan Ke Za Zhi 2019; 54:520-525. [PMID: 29996614 DOI: 10.3760/cma.j.issn.0412-4081.2018.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the changing trends of topical anti-glaucoma medications in the outpatient of the Eye Hospital of Wenzhou Medical University over the decade 2005-2014. Methods: Retrospective case series study. The medications data of glaucoma outpatients in the Eye Hospital of Wenzhou Medical University were collected for the period of January 1(st) 2005 to December 31(st) 2014. SPSS 20.0 statistical software was used, mainly for statistical description of the data. The main outcome measures were the proportions of the prescriptions of different medications, and the proportions of the monotherapy and combination therapies. Results: During the 10 years, the number of glaucoma outpatients increased year by year, from 994 in 2005 to 3 266 in 2014, the gender ration was close to 1∶1, and the age were (57±18) years. The proportion of β-blockers decreased from 56.7% (750/1 323) in 2005 to 33.1% (2 120/6 407) in 2014. The proportion of cholinergic agents decreased from 17.2% (227/1 323) in 2005 to 10.3% (663/6 407) in 2014. While the proportion of prostaglandins increased from 13.3% (176/1 323) in 2005 to 36.8% (1 916/5 209) in 2011, which was close to the 37.9% (1 972/5 209) of β-blockers in 2011. In 2012, the prostaglandins proportion increased to 41.9% (2 435/5 810) exceeding the 37.2% (2 161/5 810) of β-blockers, and became the most prescribed medication. The proportion of prostaglandins continued to increase to 46.9% (3 008/6 407) in 2014. The proportion of α(2)-agonists increased from 17.0% (225/1 323) in 2005 to 22.8% (1 460/6 407) in 2014. The proportion of carbonic anhydrase inhibitors increased from 9.6% (127/1 323) in 2005 to 24.1% (1 546/6 407) in 2014.The proportion of monotherapy decreased from 78.0% (1 032/1 323) in 2005 to 58.6% (3 757/6 407) in 2014. The proportion of two drugs combination increased from 20.0% (264/1 323) in 2005 to 26.7% (1 709/6 407) in 2014. The proportion of three drugs combination increased from 2.0% (26/1 323) in 2005 to 12.3% (788/6 407) in 2014. The proportion of four drugs combination increased from 0.1% (1/1 323) in 2005 to 2.3% (150/6 407) in 2014. Conclusions: The changes of the proportions of topical anti-glaucoma medications were remarkable from 2005 to 2014 in the outpatient of the Eye Hospital of Wenzhou Medical University. The β-blockers and cholinergic agents were declining, while the prostaglandins, α(2)-agonists and carbonic anhydrase inhibitors were increasing, and the prostaglandins became the most prescribed medication since 2012. The proportion of combination therapy was increasing. (Chin J Ophthalmol, 2018, 54: 520-525).
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Affiliation(s)
- Y B Liang
- The Eye Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Chen SR, An YY, Zhan Y, Qu J, Lei XW. [Quantitative evaluation of the relationship between femoral trochlear dysplasia and the degeneration of the patellofemoral cartilage by using T2mapping]. Zhonghua Yi Xue Za Zhi 2019; 99:1651-1655. [PMID: 31189265 DOI: 10.3760/cma.j.issn.0376-2491.2019.21.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To evaluate the relationship between the femoral trochlear dysplasia(FTD) and the degeneration of the patellofemoral cartilage by using MR T2mapping technique. Methods: Sixty two subjects with FTD(aged 18-45 years) were enrolled in Tianjin First Center Hospital from January 2016 to December 2017,the controls which both age and gender were matched.T2mapping scan were aquired for each subject and control. Compare the differences of the T2mapping values for each area between subjects and controls, and compare Dejour types of femoral trochlear in different age groups, respectively. Results: The T2mapping value of subjects was significant lower than controls: the superficial-femoral-lateral layer (sFL) (P=0.000) and the superficial-patella-lateral layer (sPL) (P=0.009). In the group of age less than 30 years, the T2mapping value of subjects was significant lower than controls:sFL (P=0.001) and sPL (P=0.015). In group of age greater than 30 years, the T2mapping value of subjects was significant lower than controls: sFL (P=0.035). In difference Dejour types of FTD, the T2mapping value of type B-D was lowest in sFL(P=0.014),sPL(P=0.000), the superficial-patella-medial layer (sPM) (P=0.020) and the the T2mapping value of type B-D was highest in the deep-femoral-medial layer (dFM) (P=0.006). The difference was statistically significant, P<0.05. Conclusion: The FTD might cause the early degeneration of patellofemoral cartilage, which significantly appear in the young age; The type B-D of FTD is more likely to cause the wider range of superficial cartilage injure and involved some part of deep layer; the injure shows dehydration change in superficial cartilage and edema in deep layer.
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Affiliation(s)
- S R Chen
- Tianjin University of Traditional Chinese Medicine, Tianjin 300110, China
| | - Y Y An
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - Y Zhan
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - J Qu
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - X W Lei
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
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Liu XQ, Chen QW, Feng HL, Wang B, Qu J, Sun Z, Heng MD, Pan SX. [Oral hygiene maintenance of locator attachments implant overdentures in edentulous population: A longitudinal study]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:136-144. [PMID: 30773558 DOI: 10.19723/j.issn.1671-167x.2019.01.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the oral hygiene status of edentulous patients with locator attachments implant overdentures (IOD) and to analyze the relationship among daily hygiene behavior, oral hygiene status and peri-implant diseases. METHODS Edentulous patients who received IOD treatment with locator attachments from January 2012 to May 2016 were recruited. Clinical and radiographic examinations were conducted to assess the peri-implant tissue status. Modified plaque index (mPLI), sulcus bleeding index (SBI), gingival index (GI), and probing depth (PD) were recorded and peri-implant marginal bone loss (MBL) was measured using paralleling projection technique. Patients' peri-implant oral hygiene maintainence habits were investigated. The correlation between peri-implant diseases and oral hygiene status and behaviors was analyzed. RESULTS Fifty patients (125 implants) with an average follow-up time of 22 months (6-54 months) were enrolled. The mean values of mPLI, SBI, and GI were 1.4±1.2, 0.8±0.7, and 0.7± 0.6, respectively. Average PD was (2.2±0.7) mm. Mesial and distal maginal bone resorptions were (1.1±1.1) mm and (0.9±0.9) mm, respectively. The prevalance of mucositis and peri-implantitis of the implants were 49.6% and 0. The prevelance of mucositis in the patients with poor oral hygiene (mPLI≥2) was 11.9 times as much as that of those with adequate oral hygiene (mPLI<1). The patients who performed oral hygiene procedure on attachments at least twice a day achieved much lower mPLI scores than those who cleaned less than twice a day. CONCLUSION Oral hygiene condition in the group of patients with implant overdentures was poor, and it contributed to increased risk of peri-implant mucositis. The prevelance of musositis of the paitients with poor oral hygiene was 11.9 times as much as that of those with proper oral hygiene. Patients wearing IOD should pay more attention to the hygiene of the attachments.
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Affiliation(s)
- X Q Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q W Chen
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - B Wang
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Qu
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Z Sun
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M D Heng
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S X Pan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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