1
|
Wang XR, Li S, Liu JY, Gu B, Jia ZJ, Tang B. [Establishment of a rapid method for detection of influenza A/B virus' antigens]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1608-1612. [PMID: 37859378 DOI: 10.3760/cma.j.cn112150-20230411-00280] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
This study aims to develop a rapid and convenient test card for simultaneous detection of influenza A and influenza B viruses using quantum dot-based immunochromatographic assay. The test card consists of a test strip and a plastic casing. The test strip is composed of absorbent paper, a buffer pad, nitrocellulose membrane (NC membrane), sample pad, quantum dot-labeled antibody pad, and polyvinyl chloride (PVC) board. The NC membrane is coated with mouse monoclonal antibodies against influenza A and influenza B viruses for the T lines (test lines), and reference proteins A and B for the C line (control line). The quantum dot-labeled antibody pad contains mouse monoclonal antibody-quantum dot conjugates against influenza A and influenza B viruses. The results showed that the detection limit of the test card for both viruses ranged from 1.51 ×102 to 2.71×103 TCID50/ml, indicating its sensitivity for accurate detection of influenza A and influenza B viruses without being affected by various variants. The test card exhibited specific reactions with different subtypes of influenza A and influenza B virus culture fluids and showed no cross-reactivity with adenovirus, novel coronavirus, Mycoplasma pneumoniae, respiratory syncytial virus, Staphylococcus aureus, and other pathogens. Overall, the sensitivity and specificity of the test card for simultaneous detection of influenza A and influenza B viruses meet the requirements for clinical use. It offers the advantages of simplicity, rapidity, and no requirement for special equipment, enabling quick auxiliary diagnosis to prevent disease transmission.
Collapse
Affiliation(s)
- X R Wang
- Medical Technology School of Xuzhou Medical University, Xuzhou 221004, China
| | - S Li
- Nanjing Vazyme Medical Technology Co., Ltd, Nanjing 210000, China
| | - J Y Liu
- Nanjing Vazyme Medical Technology Co., Ltd, Nanjing 210000, China
| | - B Gu
- Department of Laboratory Medicine, Guangdong Provincial people's Hospital, Guangzhou 510080, China
| | - Z J Jia
- Department of Nuclear Medicine, the Drum Tower Hospital Affiliated to the Medical School of Nanjing University, Nanjing 210000, China
| | - B Tang
- Medical Technology School of Xuzhou Medical University, Xuzhou 221004, China Nanjing Vazyme Medical Technology Co., Ltd, Nanjing 210000, China
| |
Collapse
|
2
|
Chetwood JD, Sabih AH, Chan K, Salimi S, Sheiban A, Lin E, Chin S, Gu B, Sastry V, Coulshed A, Tsoutsman T, Bowen DG, Majumdar A, Strasser SI, McCaughan GW, Liu K. Epidemiology, characteristics, and outcomes of patients with acute-on-chronic liver failure in Australia. J Gastroenterol Hepatol 2023; 38:1325-1332. [PMID: 37096760 DOI: 10.1111/jgh.16197] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND AND AIM Acute-on-chronic liver failure (ACLF) is distinct from acute decompensation (AD) of cirrhosis in its clinical presentation, pathophysiology, and prognosis. There are limited published Australian ACLF data. METHODS We performed a single-center retrospective cohort study of all adults with cirrhosis admitted with a decompensating event to a liver transplantation (LT) centre between 2015 and 2020. ACLF was defined using the European Association for the Study of the Liver-Chronic Liver Failure (EASL-CLIF) definition while those who did not meet the definition were classified as AD. The primary outcome of interest was 90-day LT-free survival. RESULTS A total of 615 patients had 1039 admissions for a decompensating event. On their index admission, 34% (209/615) of patients were classified as ACLF. Median admission model for end-stage liver disease (MELD) and MELD-Na scores were higher in ACLF patients compared with AD (21 vs 17 and 25 vs 20 respectively, both P < 0.001). Both the presence and severity of ACLF (grade ≥ 2) significantly predicted worse LT-free survival compared with patients with AD. The EASL-CLIF ACLF score (CLIF-C ACLF), MELD and MELD-Na scores performed similarly in predicting 90-day mortality. Patients with index ACLF had a higher risk of 28-day mortality (28.1% vs 5.1%, P < 0.001) and shorter times to readmission compared with those with AD. CONCLUSION ACLF complicates over a third of hospital admissions for cirrhosis with decompensating events and is associated with a high short-term mortality. The presence and grade of ACLF predicts 90-day mortality and should be identified as those at greatest risk of poor outcome without intervention such as LT.
Collapse
Affiliation(s)
- John David Chetwood
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Abdul-Hamid Sabih
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Karen Chan
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
| | - Shirin Salimi
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Alexander Sheiban
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Elton Lin
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Simone Chin
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Bonita Gu
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Vinay Sastry
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Andrew Coulshed
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
| | - Tatiana Tsoutsman
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - David G Bowen
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
| | - Avik Majumdar
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
| | - Simone I Strasser
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
| | - Geoffrey W McCaughan
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
- Liver Injury and Cancer Program, Centenary Institute, Sydney, Australia
| | - Ken Liu
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Australian National Liver Transplant Unit, Royal Prince Alfred Hospital, Sydney, Australia
- Liver Injury and Cancer Program, Centenary Institute, Sydney, Australia
| |
Collapse
|
3
|
Jiang C, Yuan Y, Gu B, Ahn E, Kim J, Feng D, Huang Q, Song S. Preoperative prediction of microvascular invasion and perineural invasion in pancreatic ductal adenocarcinoma with 18F-FDG PET/CT radiomics analysis. Clin Radiol 2023:S0009-9260(23)00219-2. [PMID: 37365115 DOI: 10.1016/j.crad.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 04/23/2023] [Accepted: 05/13/2023] [Indexed: 06/28/2023]
Abstract
AIM To develop and validate a predictive model based on 2-[18F]-fluoro-2-deoxy-d-glucose (18F-FDG) positron-emission tomography (PET)/computed tomography (CT) radiomics features and clinicopathological parameters to preoperatively identify microvascular invasion (MVI) and perineural invasion (PNI), which are important predictors of poor prognosis in patients with pancreatic ductal adenocarcinoma (PDAC). MATERIALS AND METHODS Preoperative 18F-FDG PET/CT images and clinicopathological parameters of 170 patients in PDAC were collected retrospectively. The whole tumour and its peritumoural variants (tumour dilated with 3, 5, and 10 mm pixels) were applied to add tumour periphery information. A feature-selection algorithm was employed to mine mono-modality and fused feature subsets, then conducted binary classification using gradient boosted decision trees. RESULTS For MVI prediction, the model performed best on a fused subset of 18F-FDG PET/CT radiomics features and two clinicopathological parameters, with an area under the receiver operating characteristic curve (AUC) of 83.08%, accuracy of 78.82%, recall of 75.08%, precision of 75.5%, and F1-score of 74.59%. For PNI prediction, the model achieved best prediction results only on the subset of PET/CT radiomics features, with AUC of 94%, accuracy of 89.33%, recall of 90%, precision of 87.81%, and F1 score of 88.35%. In both models, 3 mm dilation on the tumour volume produced the best results. CONCLUSIONS The radiomics predictors from preoperative 18F-FDG PET/CT imaging exhibited instructive predictive efficacy in the identification of MVI and PNI status preoperatively in PDAC. Peritumoural information was shown to assist in MVI and PNI predictions.
Collapse
Affiliation(s)
- C Jiang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China; Department of Nuclear Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Y Yuan
- Biomedical and Multimedia Information Technology Research Group, School of Computer Science, University of Sydney, Sydney, Australia
| | - B Gu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - E Ahn
- Discipline of Information Technology, College of Science & Engineering, James Cook University, Australia
| | - J Kim
- Biomedical and Multimedia Information Technology Research Group, School of Computer Science, University of Sydney, Sydney, Australia
| | - D Feng
- Biomedical and Multimedia Information Technology Research Group, School of Computer Science, University of Sydney, Sydney, Australia
| | - Q Huang
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.
| | - S Song
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.
| |
Collapse
|
4
|
Tian BS, Ling Y, Lyu JW, Ye L, Gu B. [A retrospective analysis of clinical characteristics and prognostic factors for 152 cases of Staphylococcus aureus bloodstream infection]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:241-246. [PMID: 36797583 DOI: 10.3760/cma.j.cn112150-20220221-00161] [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: 02/18/2023]
Abstract
To understand the clinical characteristics of Staphylococcus aureus bloodstream infection and the main risk factors affecting clinical prognosis, providing a reference for clinical prevention and control of Staphylococcus aureus bloodstream infection. In this study, the clinical data of 152 patients with Staphylococcus aureus bloodstream infection admitted to Guangdong Provincial People's Hospital from January 2019 to December 2021 were retrospectively analyzed by reviewing the electronic medical record system, including underlying diseases, clinical characteristics, risk factors, and bacterial resistance. Statistical methods such as Chi-Squared Test and t Test were used to analyze the related risk factors that may affect the clinical characteristics and prognosis of patients with Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection, then the variables with P<0.05 in univariate analysis were included in the multivariate logistic regression model to analyze the independent risk factors of poor prognosis. The results showed among 152 patients with Staphylococcus aureus bloodstream infection, 50 patients (32.89%) were infected with MRSA. In comparison, 102 patients (67.11%) were infected with methicillin-sensitive Staphylococcus aureus (MSSA). Except for rifampicin, the resistance rate of MRSA to commonly used antibiotics was all higher than that of MSSA, and the difference was statistically significant (Chi-square values were 8.272, 11.972, 4.998, 4.776, respectively;all P-values are less than 0.05). Strains resistant to vancomycin, linezolid, and quinupristin/dalfopristin were not found. In the MRSA group, indwelling catheter and drainage tube, carbapenems, and β-lactamase inhibitor treatment were significantly higher than the MSSA group. The difference was statistically significant (P<0.05). The incidence of poor prognosis of bloodstream infection in the MRSA group was higher than that in the MSSA group (34.00% vs 13.73%), and the difference was statistically significant (χ2=8.495, P<0.05). No independent risk factors associated with poor prognosis were found in the included patients with MRSA bloodstream infection.Multivariate Logistic regression model analysis showed that solid malignant tumors (OR=13.576, 95%CI: 3.352-54.977, P<0.05), mechanical ventilation (OR=7.468, 95%CI: 1.398-39.884, P<0.05) were the most important independent risk factors for poor prognosis in patients with Staphylococcus aureus bloodstream infection. In summary, the poor prognosis rate of MRSA bloodstream infection is higher than that of MSSA. The clinical evaluation of related risk factors should be strengthened, targeted prevention and control interventions should be taken to improve the prognosis of patients with Staphylococcus aureus bloodstream infection, and the use of antibiotics should be rational and standardized, to control bacterial infection and drug resistance effectively.
Collapse
Affiliation(s)
- B S Tian
- Medical Technology School of Xuzhou Medical University, Xuzhou Key Laboratory of Laboratory Diagnostics, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - Y Ling
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - J W Lyu
- Medical Technology School of Xuzhou Medical University, Xuzhou Key Laboratory of Laboratory Diagnostics, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - L Ye
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - B Gu
- Medical Technology School of Xuzhou Medical University, Xuzhou Key Laboratory of Laboratory Diagnostics, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| |
Collapse
|
5
|
Tian BS, Wu YJ, Cui XX, Lyu JW, Chen MH, Zhu C, Gu B. [Research progress of CRISPR/Cas biosensors based on different signal amplification strategies]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:112-119. [PMID: 36655267 DOI: 10.3760/cma.j.cn112150-20220220-00158] [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: 01/20/2023]
Abstract
CRISPR/Cas(the clustered regularly interspaced short palindromic repeats-CRISPR associated)system exists in most bacteria and all archaea. It is an important strategy for bacteria and archaea to resist foreign nucleic acid invasion and use for self-defense. The CRISPR/Cas system is a simple, fast, and specific diagnostic tool, which is widely used in agriculture, industry, animal husbandry, and medicine. This article mainly introduces and discusses recently advantages and limitations of biosensors combining CRISPR/Cas system with fluorescence, visualization and surface enhanced raman related technologies, as well as future research directions.
Collapse
Affiliation(s)
- B S Tian
- College of Medical Technology, Xuzhou Medical University, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - Y J Wu
- School of Medical Imaging, Xuzhou Medical University, Xuzhou 221004, China
| | - X X Cui
- College of Medical Technology, Xuzhou Medical University, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - J W Lyu
- College of Medical Technology, Xuzhou Medical University, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - M H Chen
- School of Medical Imaging, Xuzhou Medical University, Xuzhou 221004, China
| | - C Zhu
- Department of Laboratory Medicine, Xuzhou Tumor Hospital, Xuzhou 221005, China
| | - B Gu
- College of Medical Technology, Xuzhou Medical University, Xuzhou 221004, China Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| |
Collapse
|
6
|
Zhao YH, Lu MD, Liao JF, Yuan KX, Zhang XQ, Gu B. [Advances in the relationship between lung cancer and microbiota]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1716-1722. [PMID: 36536556 DOI: 10.3760/cma.j.cn112150-20220124-00083] [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: 06/17/2023]
Abstract
Interaction exists in lung cancer and microbiota. Lung microecological homeostasis can improve the immune tolerance, enhance immune suppression, and inhibit inflammatory responses, to reduce the lung cancer; while lung cancer can lead to pulmonary microecological imbalance, change the lung environment, and promote tumor cell proliferation. Therefore, modulating microbial flora and microecological immunotherapy may be a potential and preventive treatment for lung cancer, to restore tumor immunosuppression and improve patient survival. However, the individual differences in the lung microecology, because of different genetics, ethnic characteristics, and dietary habits, increasing the difficulty of precise diagnosis and treatment, which is also the current bottleneck in the application of microecological immunotherapy. Otherwise, the effectiveness of regulatory measures such as probiotics, prebiotics or antimicrobials is questionable. The research on microbial flora is still in its infancy, and further exploration is needed to form a standardized, effective, and precise treatment plan. So, standardized, effective, and precise microbial flora treatment strategies need to be further explored.
Collapse
Affiliation(s)
- Y H Zhao
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - M D Lu
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - J F Liao
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - K X Yuan
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - X Q Zhang
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| | - B Gu
- Division of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences,Guangzhou 510080, China
| |
Collapse
|
7
|
Gu B, Kondic L, Cummings L. Network-based membrane filters: Influence of network and pore size variability on filtration performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120668] [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: 10/18/2022]
|
8
|
Gu B, Venkatesh K, Williams AJ, Ng W, Corte C, Gholamrezaei A, Ghaly S, Xuan W, Paramsothy S, Connor S. Higher infliximab and adalimumab trough levels are associated with fistula healing in patients with fistulising perianal Crohn’s disease. World J Gastroenterol 2022; 28:2597-2608. [PMID: 35949350 PMCID: PMC9254145 DOI: 10.3748/wjg.v28.i23.2597] [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] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/21/2021] [Accepted: 05/07/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Tumor necrosis factor-alpha inhibitors, including infliximab and adalimumab, are effective medical treatments for perianal fistulising Crohn’s disease (CD), but not all patients achieve fistula healing.
AIM To determine the correlation between perianal fistula healing and closure with infliximab and adalimumab trough levels.
METHODS In this multicentre retrospective study conducted across four tertiary inflammatory bowel disease centres in Australia, we identified CD patients with perianal fistulae on maintenance infliximab or adalimumab who had a trough level within twelve weeks of clinical assessment. Data collected included demographics, serum infliximab and adalimumab trough levels (mg/L) within 12 wk before or after their most recent clinical assessment and concomitant medical or surgical therapy. The primary outcome was fistula healing, defined as cessation in fistula drainage. The secondary outcome was fistula closure, defined as healing and closure of all external fistula openings. Differences between patients who did or did not achieve fistula healing were compared using the chi-square test, t test or Mann-Whitney U test.
RESULTS One hundred and fourteen patients (66 infliximab, 48 adalimumab) were included. Forty-eight (72.7%) patients on maintenance infliximab achieved fistula healing and 18 (27.3%) achieved fistula closure. Thirty-seven (77%) patients on maintenance adalimumab achieved fistula healing and 17 (35.4%) achieved fistula closure. Patients who achieved fistula healing had significantly higher infliximab and adalimumab trough levels than patients who did not [infliximab: 6.4 (3.8-9.5) vs 3.0 (0.3-6.2) mg/L, P = 0.003; adalimumab: 9.2 (6.5-12.0) vs 5.4 (2.5-8.3) mg/L, P = 0.004]. For patients on infliximab, fistula healing was associated with lower rates of detectable anti-infliximab antibodies and younger age. For patients on adalimumab, fistula healing was associated with higher rates of combination therapy with an immunomodulator. Serum trough levels for patients with and without fistula closure were not significantly different for infliximab [6.9 (4.3-10.2) vs 5.5 (2.5-8.3) mg/L, P = 0.105] or adalimumab [10.0 (6.6-12.0) vs 7.8 (4.2-10.0) mg/L, P = 0.083].
CONCLUSION Higher maintenance infliximab and adalimumab trough levels are associated with perianal fistula healing in CD.
Collapse
Affiliation(s)
- Bonita Gu
- South Western Sydney Clinical School, University of New South Wales, Sydney 2170, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney 2170, New South Wales, Australia
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney 2050, New South Wales, Australia
| | - Kavya Venkatesh
- Department of Medicine, University of Newcastle, Newcastle 2308, New South Wales, Australia
| | - Astrid-Jane Williams
- South Western Sydney Clinical School, University of New South Wales, Sydney 2170, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney 2170, New South Wales, Australia
| | - Watson Ng
- South Western Sydney Clinical School, University of New South Wales, Sydney 2170, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney 2170, New South Wales, Australia
| | - Crispin Corte
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney 2050, New South Wales, Australia
- Central Clinical School, University of Sydney, Sydney 2050, New South Wales, Australia
| | - Ali Gholamrezaei
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney 2170, New South Wales, Australia
- Ingham Institute of Applied Medical Research, Sydney 2170, New South Wales, Australia
| | - Simon Ghaly
- Department of Gastroenterology, St Vincent’s Hospital Sydney, Sydney 2010, New South Wales, Australia
- St Vincent’s Clinical School, University of New South Wales, Sydney 2010, New South Wales, Australia
| | - Wei Xuan
- South Western Sydney Clinical School, University of New South Wales, Sydney 2170, New South Wales, Australia
- Ingham Institute of Applied Medical Research, Sydney 2170, New South Wales, Australia
| | - Sudarshan Paramsothy
- Department of Gastroenterology and Hepatology, Concord Repatriation General Hospital, Sydney 2139, New South Wales, Australia
- Concord Clinical School, University of Sydney, Sydney 2139, New South Wales, Australia
| | - Susan Connor
- South Western Sydney Clinical School, University of New South Wales, Sydney 2170, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney 2170, New South Wales, Australia
- Ingham Institute of Applied Medical Research, Sydney 2170, New South Wales, Australia
| |
Collapse
|
9
|
De Gregorio M, Lee T, Krishnaprasad K, Amos G, An YK, Bastian-Jordan M, Begun J, Borok N, Brown DJM, Cheung W, Connor SJ, Gerstenmaier J, Gilbert LE, Gilmore R, Gu B, Kutaiba N, Lee A, Mahy G, Srinivasan A, Thin L, Thompson AJ, Welman CJ, Yong EXZ, De Cruz P, van Langenberg D, Sparrow MP, Ding NS. Higher Anti-tumor Necrosis Factor-α Levels Correlate With Improved Radiologic Outcomes in Crohn's Perianal Fistulas. Clin Gastroenterol Hepatol 2022; 20:1306-1314. [PMID: 34389484 DOI: 10.1016/j.cgh.2021.07.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/08/2021] [Accepted: 07/28/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Higher anti-tumor necrosis factor-α (TNF) drug levels are associated with improved clinical healing of Crohn's perianal fistulas. It is unclear whether this leads to improved healing on radiologic assessment. We aimed to evaluate the association between anti-TNF drug levels and radiologic outcomes in perianal fistulising Crohn's disease. METHODS A cross-sectional retrospective multicenter study was undertaken. Patients with perianal fistulising Crohn's disease on maintenance infliximab or adalimumab, with drug levels within 6 months of perianal magnetic resonance imaging were included. Patients receiving dose changes or fistula surgery between drug level and imaging were excluded. Radiologic disease activity was scored using the Van Assche Index, with an inflammatory subscore calculated using indices: T2-weighted imaging hyperintensity, collections >3 mm diameter, rectal wall involvement. Primary endpoint was radiologic healing (inflammatory subscore ≤6). Secondary endpoint was radiologic remission (inflammatory subscore = 0). RESULTS Of 193 patients (infliximab, n = 117; adalimumab, n = 76), patients with radiologic healing had higher median drug levels compared with those with active disease (infliximab 6.0 vs 3.9 μg/mL; adalimumab 9.1 vs 6.2 μg/mL; both P < .05). Patients with radiologic remission also had higher median drug levels compared with those with active disease (infliximab 7.4 vs 3.9 μg/mL; P < .05; adalimumab 9.8 vs 6.2 μg/mL; P = .07). There was a significant incremental reduction in median inflammatory subscores with higher anti-TNF drug level tertiles. CONCLUSIONS Higher anti-TNF drug levels were associated with improved radiologic outcomes on magnetic resonance imaging in perianal fistulising Crohn's disease, with an incremental improvement at higher drug level tertiles for both infliximab and adalimumab.
Collapse
Affiliation(s)
- Michael De Gregorio
- St Vincent's Hospital Melbourne, Department of Gastroenterology, Fitzroy, Australia; University of Melbourne, Medicine, Parkville, Australia.
| | - Tanya Lee
- St Vincent's Hospital Melbourne, Department of Gastroenterology, Fitzroy, Australia
| | - Krupa Krishnaprasad
- St Vincent's Hospital Melbourne, Department of Gastroenterology, Fitzroy, Australia; QIMR Berghofer Medical Research Institute, Gut Health Lab, Brisbane, Australia
| | - Gregory Amos
- University of Queensland, Medicine, St Lucia, Australia; Queensland X-ray, Medical Imaging, Brisbane, Australia
| | - Yoon-Kyo An
- University of Queensland, Medicine, St Lucia, Australia; Mater Hospital Brisbane, Gastroenterology, South Brisbane, Australia
| | - Matthew Bastian-Jordan
- University of Queensland, Medicine, St Lucia, Australia; Queensland X-ray, Medical Imaging, Brisbane, Australia
| | - Jakob Begun
- Mater Hospital Brisbane, Gastroenterology, South Brisbane, Australia; University of Queensland, Mater Research Institute, St Lucia, Australia
| | - Nira Borok
- Liverpool Hospital, Medical Imaging, Liverpool, Australia; South Western Sydney Local Health District, Medicine, Liverpool, Australia
| | - Dougal J M Brown
- Townsville University Hospital, Medical Imaging, Douglas, Australia
| | - Wa Cheung
- Alfred Health, Medical Imaging, Melbourne, Australia
| | - Susan J Connor
- Liverpool Hospital, Gastroenterology and Hepatology, Liverpool, Australia; Ingham Institute for Applied Medical Research, Medicine, Liverpool, Australia; University of New South Wales, South Western Sydney Clinical School, Sydney, Australia
| | | | | | | | - Bonita Gu
- Liverpool Hospital, Gastroenterology and Hepatology, Liverpool, Australia; University of New South Wales, South Western Sydney Clinical School, Sydney, Australia; Royal Prince Alfred Hospital, Gastroenterology and Hepatology, Camperdown, Australia
| | - Numan Kutaiba
- Austin Health, Radiology, Heidelberg, Australia; Eastern Health, Radiology, Box Hill, Australia
| | - Allan Lee
- Imaging Associates Eastern Health, Medical Imaging, Melbourne, Australia; Peter MacCallum Cancer Centre, Cancer Imaging, Melbourne, Australia
| | - Gillian Mahy
- Townsville University Hospital, Gastroenterology, Douglas, Australia
| | - Ashish Srinivasan
- Austin Health, Gastroenterology, Heidelberg, Australia; Eastern Health, Gastroenterology, Box Hill, Australia; Monash University, Medicine, Clayton, Australia
| | - Lena Thin
- Fiona Stanley Hospital, Gastroenterology, Murdoch, Australia; University of Western Australia, School of Medicine and Pharmacology, Crawley, Australia
| | - Alexander J Thompson
- St Vincent's Hospital Melbourne, Department of Gastroenterology, Fitzroy, Australia; University of Melbourne, Medicine, Parkville, Australia
| | | | - Eric X Z Yong
- St Vincent's Hospital Melbourne, Medical Imaging, Fitzroy, Australia
| | - Peter De Cruz
- University of Melbourne, Medicine, Parkville, Australia; Austin Health, Gastroenterology, Heidelberg, Australia
| | - Daniel van Langenberg
- Eastern Health, Gastroenterology, Box Hill, Australia; Monash University, Medicine, Clayton, Australia
| | - Miles P Sparrow
- Alfred Health, Gastroenterology, Melbourne, Australia; Monash University, Medicine, Clayton, Australia
| | - Nik S Ding
- St Vincent's Hospital Melbourne, Department of Gastroenterology, Fitzroy, Australia; University of Melbourne, Medicine, Parkville, Australia
| |
Collapse
|
10
|
Liu YH, Huang X, Li HZ, Gao YS, Gu SC, Yimin YM, Luo SY, Zhang ZW, Gu B, Zan T. [Clinical application of expanded internal mammary artery perforator flap combined with vascular supercharge in reconstruction of faciocervical scar]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:313-320. [PMID: 35462508 DOI: 10.3760/cma.j.cn501120-20210928-00334] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize the clinical experience of expanded internal mammary artery perforator (IMAP) flap combined with vascular supercharge in reconstruction of faciocervical scar. Methods: The retrospective observational study was conducted. From September 2012 to May 2021, 23 patients with postburn or posttraumatic faciocervical scars who met the inclusion criteria were admitted to Shanghai Ninth People's Hospital of Shanghai Jiao Tong University School of Medicine, including 18 males and 5 females, aged from 11 to 58 years, all of whom were reconstructed with expanded IMAP flaps. At the first stage, one or two skin and soft tissue expander (s) with appropriate rated capacity were implanted in the anterior chest area according to the location and size of the scars. The IMAP, thoracic branch of supraclavicular artery, and lateral thoracic artery were preserved during the operation. The skin and soft tissue expanders were inflated with normal saline after the operation. The flaps were transferred during the second stage. The dominant IMAP was determined preoperatively using color Doppler ultrasound (CDU) blood flow detector. The faciocervical scars were removed, forming wounds with areas of 9 cm×7 cm-28 cm×12 cm, and the perforators of superficial temporal artery and vein or facial artery and vein were preserved during the operation. The flaps were designed according to the area and size of the wounds after scar resection with the dominant IMAP as the pedicle. Single-pedicle IMAP flaps were used to repair small and medium-sized wounds. For larger defects, the blood perfusion areas of vessels in the anterior chest were evaluated by indocyanine green angiography (ICGA). In situations where the IMAP was insufficient to nourish the entire flap, double-pedicle flaps were designed by using the thoracic branch of supraclavicular artery or lateral thoracic artery for supercharging. Pedicled or free flap transfer was selected according to the distance between the donor areas and recipient areas. After transplantation of flaps, ICGA was conducted again to evaluate blood perfusion of the flaps. The donor sites of flaps were all closed by suturing directly. Statistics were recorded, including the number, rated capacity, normal saline injection volume, and expansion period of skin and soft tissue expanders, the location of the dominant IMAP, the total number of the flaps used, the number of flaps with different types of vascular pedicles, the flap area, the flap survival after the second stage surgery, the occurrence of common complications in the donor and recipient areas, and the condition of follow-up. Results: Totally 25 skin and soft tissue expanders were used in this group of patients, with rated capacity of 200-500 mL, normal saline injection volume of 855-2 055 mL, and expansion period of 4-16 months. The dominant IMAP was detected in the second intercostal space (20 sides) or the third intercostal space (5 sides) before surgery. A total of 25 expanded flaps were excised, including 2 pedicled IMAP flaps, 11 free IMAP flaps, 4 pedicled thoracic branch of supraclavicular artery+free IMAP flaps, and 8 free IMAP+lateral thoracic artery flaps, with flap areas of 10 cm×8 cm-30 cm×14 cm. After the second stage surgery, tip necrosis of flaps in three patients occurred, which healed after routine dressing changes; one patient developed arterial embolism and local torsion on the vascular pedicle at the anastomosis of IMAP and facial artery, and the blood supply recovered after thrombectomy and vascular re-anastomosis. Fourteen patients underwent flap thinning surgery in 1 month to 6 months after the second stage surgery. The follow-up for 4 months to 9 years showed that all patients had improved appearances of flaps and functions of face and neck and linear scar in the donor sites of flaps, and one female patient had obvious nipple displacement and bilateral breast asymmetry. Conclusions: The expanded IMAP flap is matched in color and texture with that of the face and neck, and its incision causes little damage to the chest donor sites. When combined with vascular supercharge, a double-pedicle flap can be designed flexibly to further enhance the blood supply and expand the flap incision area, which is a good choice for reconstruction of large faciocervical scar.
Collapse
Affiliation(s)
- Y H Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - X Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - H Z Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Y S Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - S C Gu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Y M Yimin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - S Y Luo
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Z W Zhang
- Department of Plastic and Reconstructive Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - B Gu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - T Zan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| |
Collapse
|
11
|
Gu B, Liu K, McKenzie C, MacGregor D, Corte C. Gastrointestinal: Autoimmune enteropathy associated with thymoma. J Gastroenterol Hepatol 2022; 37:606. [PMID: 34632628 DOI: 10.1111/jgh.15692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 09/13/2021] [Accepted: 09/19/2021] [Indexed: 12/09/2022]
Affiliation(s)
- B Gu
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - K Liu
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.,Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - C McKenzie
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - D MacGregor
- Department of Anatomical Pathology, The Royal Children's Hospital, Melbourne, Victoria, Australia
| | - C Corte
- AW Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.,Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| |
Collapse
|
12
|
Gu B, De Gregorio M, Pipicella JL, Vande Casteele N, Andrews JM, Begun J, Connell W, D'Souza B, Gholamrezaei A, Hart A, Liew D, Radford-Smith G, Rimola J, Sutherland T, Toong C, Woods R, Wu Y, Xuan W, Williams AJ, Ng W, Ding NS, Connor S. Prospective randomised controlled trial of adults with perianal fistulising Crohn's disease and optimised therapeutic infliximab levels: PROACTIVE trial study protocol. BMJ Open 2021; 11:e043921. [PMID: 34210720 PMCID: PMC8252869 DOI: 10.1136/bmjopen-2020-043921] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Perianal fistulising Crohn's disease (pfCD) can be somewhat treatment refractory. Higher infliximab trough levels (TLIs) may improve fistula healing rates; however, it remains unclear whether escalating infliximab therapy to meet higher TLI targets using proactive, or routine, therapeutic drug monitoring (TDM) improves outcomes. This randomised controlled trial aimed to assess whether infliximab therapy targeting higher TLIs guided by proactive TDM improves outcomes compared with standard therapy. METHODS AND ANALYSIS Patients with active pfCD will be randomised 1:1 to either the proactive TDM arm or standard dosing arm and followed up for 54 weeks. Patients in the proactive TDM arm will have infliximab dosing optimised to target higher TLIs. The targets will be TLI ≥ 25 µg/mL at week 2, ≥ 20 µg/mL at week 6 and ≥ 10 µg/mL during maintenance therapy. The primary objective will be fistula healing at week 32. Secondary objectives will include fistula healing, fistula closure, radiological fistula healing, patient-reported outcomes and economic costs up to 54 weeks. Patients in the standard dosing arm will receive conventional infliximab dosing not guided by TLIs (5 mg/kg at weeks 0, 2 and 6, and 5 mg/kg 8 weekly thereafter). Patients aged 18-80 years with pfCD with single or multiple externally draining complex perianal fistulas who are relatively naïve to infliximab treatment will be included. Patients with diverting ileostomies or colostomies and pregnant or breast feeding will be excluded. Fifty-eight patients per arm will be required to detect a 25% difference in the primary outcome measure, with 138 patients needed to account for an estimated 6.1% primary non-response rate and 10% dropout rate. ETHICS AND DISSEMINATION Results will be presented in peer-reviewed journals and international conferences. Ethics approval has been granted by the South Western Sydney Local Health District Human Research Ethics Committee in Australia. TRIAL REGISTRATION NUMBER Australian New Zealand Clinical Trials Registry (ACTRN12621000023853); Pre-results.
Collapse
Affiliation(s)
- Bonita Gu
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Michael De Gregorio
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Gastroenterology and Hepatology, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Joseph Louis Pipicella
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
- Biostatistics Unit, The Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
| | - Niels Vande Casteele
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Jane M Andrews
- Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Faculty of Health Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Jakob Begun
- Immunity, Infection, and Inflammation Program, Mater Research Institute, Brisbane, Queensland, Australia
- Department of Gastroenterology, Mater Hospital Brisbane, Brisbane, Queensland, Australia
| | - William Connell
- Department of Gastroenterology and Hepatology, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Basil D'Souza
- Department of Colorectal Surgery, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Ali Gholamrezaei
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
- Biostatistics Unit, The Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
| | - Ailsa Hart
- Inflammatory Bowel Diseases Unit, St Mark's Hospital, Harrow, UK
| | - Danny Liew
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Graham Radford-Smith
- Department of Gastroenterology and Hepatology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Jordi Rimola
- Inflammatory Bowel Disease Unit, Department of Radiology, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Tom Sutherland
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Medical Imaging Department, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Catherine Toong
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Immunology, NSW Health Pathology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Rodney Woods
- Department of Colorectal Surgery, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Yang Wu
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Wei Xuan
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Biostatistics Unit, The Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
| | - Astrid-Jane Williams
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Watson Ng
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Nik Sheng Ding
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Gastroenterology and Hepatology, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Susan Connor
- South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| |
Collapse
|
13
|
Shi S, Cheng B, Gu B, Sheng T, Tu J, Shao Y, Qi K, Zhou D. Evaluation of the probiotic and functional potential of Lactobacillus agilis 32 isolated from pig manure. Lett Appl Microbiol 2021; 73:9-19. [PMID: 33098675 DOI: 10.1111/lam.13422] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 12/16/2022]
Abstract
Escherichia coli is a symbiotic bacterium in humans and animals and an important pathogen of humans and animals. Prevention and suppression of E. coli infection is of great concern. In this study, we isolated a strain of Lactobacillus agilis 32 from pig manure and evaluated its biological characteristics, and found that its bacterial survival rate was 25% after 4 h of treatment at pH 2, and under the condition of 0·5% bile concentration, its survival rate exceeds 30%. In addition, L. agilis 32 has a cell surface hydrophobicity of 77·8%, and exhibits 67·1% auto-aggregation and 63·2% aggregation with Enterotoxigenic E. coli 10 (ETEC 10). FITC fluorescence labelling showed that the fluorescence intensity of cecum was significantly higher than that of duodenum, jejunum or colon (P < 0·05), but no significant difference from ileum. Lactobacillus agilis 32 bacterial culture and CFS showed average inhibition zone diameters of 14·2 and 15·4 mm respectively. Lactobacillus agilis 32 CFS treatment can significantly reduce the pathogenicity of ETEC 10. These results show that L. agilis 32 is an active and potential probiotic, and it has a good antibacterial effect on ETEC10, which provides basic research for probiotics to prevent and treat intestinal diarrhoea pathogen infection.
Collapse
Affiliation(s)
- S Shi
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China.,College of Life Sciences, Anqing Normal University, Anqing, P. R. China
| | - B Cheng
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - B Gu
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - T Sheng
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - J Tu
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - Y Shao
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - K Qi
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Anhui Agricultural University, Hefei, P. R. China
| | - D Zhou
- College of Life Sciences, Anqing Normal University, Anqing, P. R. China
| |
Collapse
|
14
|
Gu B, Liu N, Nie Y, Liu ZM, Liu YJ, Chen MY, Wu JF, Guan XD. [The prognostic value of myoglobin difference in sepsis related chronic critical illness]. Zhonghua Nei Ke Za Zhi 2021; 60:350-355. [PMID: 33765705 DOI: 10.3760/cma.j.cn112138-20200721-00691] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the predictive value of myoglobin (Mb) for the prognosis of sepsis related chronic critical illness (CCI). Methods: Retrospective study was conducted on septic patients with the length of ICU stay equal or greater than 14 days, and sepsis-related organ failure assessment (SOFA) score equal or greater than 2 on the 14th day in ICU in the First Department of Critical Care Medicine at the First Affiliated Hospital of Sun Yat-sen University from January 2017 to March 2020. Patients' clinical and laboratory data were collected on the 1st and 14th day in ICU. The survival on day 28 in ICU was recorded. According to the myoglobin levels on day 1 and day 14, all subjects were divided into myoglobin elevation group and decline group. Kaplan-Meier survival curve was used to compare the cumulative survival rate at day 28. Cox regression analysis was used to analyze the independent risk factors of mortality. Receiver operating characteristic (ROC) curve was used to analyze the prognostic value of myoglobin. Results: A total of 131 patients with sepsis related CCI were recruited, including 58 patients in the elevation group and 73 in the decline group. The Mb level in elevation group on day 1 was significantly lower than that in decline group [172.40(59.99, 430.53) μg/L vs. 413.60(184.40, 1 328.50) μg/L, Z=3.749, P=0.000], and the Mb level on day 14 was the opposite change in two groups [483.65(230.38, 1 471.75)μg/L in elevation group vs. 132.20(76.86, 274.35)μg/L in decline group, Z=5.595, P=0.000]. Kaplan-Meier survival curve analysis showed that the 28-day cumulative survival rate of the elevation group was significantly lower than that of decline group (χ²=7.051, P=0.008). Cox ratio regression analysis suggested that elevated myoglobin was an independent risk factor for 28-day mortality in septic patients with CCI (OR=2.534, 95%CI 1.212-5.295, P=0.013). ROC curve analysis suggested that the sensitivity of myoglobin elevation in predicting mortality related to CCI within 28 days was 64.5%, and the specificity was 32.0% with area under the curve(AUC) 0.661(95%CI 0.550-0.773,P=0.007) and Jorden Index was 0.325. Conclusion: Elevated myoglobin, an independent risk factor for mortality within 28 days in ICU, can predict the prognosis of sepsis related chronic critical illness.
Collapse
Affiliation(s)
- B Gu
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - N Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y Nie
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Z M Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y J Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - M Y Chen
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - J F Wu
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - X D Guan
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| |
Collapse
|
15
|
Bao Z, Liu J, Hu Y, Li Y, Gu B, Zhu J, Zheng X, Wu M, Shen X, Alffenaar JW. Treatment outcomes for COVID-19: a prospective cohort study. Int J Tuberc Lung Dis 2021; 25:154-156. [PMID: 33656430 DOI: 10.5588/ijtld.20.0388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Z Bao
- Suzhou Fifth People's Hospital, Suzhou
| | - J Liu
- Suzhou Fifth People's Hospital, Suzhou
| | - Y Hu
- School of Public Health and Key Laboratory of Public Health Safety, Fudan University, Shanghai, China
| | - Y Li
- Suzhou Fifth People's Hospital, Suzhou
| | - B Gu
- Suzhou Fifth People's Hospital, Suzhou
| | - J Zhu
- School of Public Health and Key Laboratory of Public Health Safety, Fudan University, Shanghai, China
| | - X Zheng
- School of Public Health and Key Laboratory of Public Health Safety, Fudan University, Shanghai, China
| | - M Wu
- Suzhou Fifth People's Hospital, Suzhou
| | - X Shen
- Suzhou Fifth People's Hospital, Suzhou
| | - J W Alffenaar
- Faculty of Medicine and Health, School of Pharmacy, University of Sydney, Sydney, NSW, Westmead Hospital, Sydney, NSW, Marie Bashir Institute of Infectious Diseases and Biosecurity, University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
16
|
Li Y, Wang ZC, Luo L, Mu CY, Xu J, Feng Q, Li SB, Gu B, Ma P, Lan T. The clinical value of the combined detection of sEGFR, CA125 and HE4 for epithelial ovarian cancer diagnosis. Eur Rev Med Pharmacol Sci 2021; 24:604-610. [PMID: 32016961 DOI: 10.26355/eurrev_202001_20036] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to investigate the clinical value of combined detection of serum soluble epidermal growth factor receptor (sEGFR), cancer antigen 125 (CA125), and human epididymis protein 4 (HE4) in the diagnosis of epithelial ovarian cancer (EOC). PATIENTS AND METHODS From December 2017 to October 2018, the serum samples were obtained from the Affiliated Hospital of Xuzhou Medical University, with 30 patients as EOC group, 30 patients with benign ovarian neoplasms as benign group, and 17 healthy subjects as healthy group. Besides, among 30 EOC patients, 9 serum samples were obtained from pre-operative and post-operative EOC patients. The levels of serum sEGFR were detected by enzyme-linked immunosorbent assay (ELISA), while CA125 and HE4 were detected by enhanced chemiluminescence immunoassay (ECLIA). The diagnostic value was evaluated by receiver operating characteristic (ROC) curve analysis. RESULTS The levels of serum sEGFR, CA125, and HE4 in EOC group were significantly higher than those in benign group (p<0.05) and healthy group (p<0.05). When using a single tumor marker, the CA125 shows the highest sensitivity (93.30%) and HE4 shows the highest specificity (97.87%). The specificity of combined detection of serum sEGFR, CA125, and HE4 was 100%, which was significantly higher than that using a single tumor marker. The area under the ROC curve (AUC) of combined detection of serum sEGFR, CA125, and HE4 (0.965) was much higher than that of the single detection and higher than that of combined detection of CA125 and HE4 (0.940). Moreover, the level of serum sEGFR in post-operative EOC group was significantly lower than that in the corresponding pre-operative EOC group (p<0.05). CONCLUSIONS Our study shows that combined detection of serum sEGFR, CA125, and HE4 increases the specificity and efficiency in EOC diagnosis, indicating that sEGFR could be a potential biomarker for the diagnosis and prognosis of EOC.
Collapse
Affiliation(s)
- Y Li
- School of Medical Technology, Xuzhou Medical University, Xuzhou City, Jiangsu Province,
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Friesen L, Gu B, Kim C. A ligand-independent fast function of RARα promotes exit from metabolic quiescence upon T cell activation and controls T cell differentiation. Mucosal Immunol 2021; 14:100-112. [PMID: 32518366 PMCID: PMC7725911 DOI: 10.1038/s41385-020-0311-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 04/22/2020] [Accepted: 05/20/2020] [Indexed: 02/04/2023]
Abstract
Vitamin A metabolites play important roles in T cell activation and differentiation. A conventional model of RARα function relies upon retinoic acid (RA)-liganded RARα binding to specific DNA motifs to regulate gene expression in the nucleus. However, this genomic function fails to explain many of the biological responses of the RA-RARα axis on T cells. We generated a mouse line where RARα is over-expressed in T cells to probe RARα function with unprecedented sensitivity. Using this model together with mice specifically lacking RARα in T cells, we found that RARα is required for prompt exit from metabolic quiescence in resting T cells upon T cell activation. The positive effect of RARα on metabolism is mediated through PI3K and subsequent activation of the Akt and mTOR signaling pathway. This largely non-genomic function of RARα is surprisingly ligand-independent and controls the differentiation of effector and regulatory T cell subsets.
Collapse
Affiliation(s)
- L.R. Friesen
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI 48109,Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI 48109
| | - B. Gu
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47906
| | - C.H. Kim
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI 48109,Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI 48109,Rogel Cancer Center, University of Michigan School of Medicine, Ann Arbor, MI 48109
| |
Collapse
|
18
|
Yang D, Kim H, Green O, Henke L, Gu B, Cai B, Cammin J, Li H. Co-60 MR Guided Adaptive Radiation Treatment Improves Target Coverage and Organs-At-Risk Sparing: Dosimetric Analysis of 1185 Adaptive Fractions and 5 Years’ Experience. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
19
|
Bao Z, Gu B, Liu J, Zhu J, Alffenaar JW, Hu Y, Shen X. Successful treatment of patients severely ill with COVID-19. Int J Tuberc Lung Dis 2020; 24:650-653. [PMID: 32553001 DOI: 10.5588/ijtld.20.0232] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Z Bao
- The Fifth People's Hospital of Suzhou, Infectious Disease Hospital Affiliated to Soochow University, Suzhou, China
| | - B Gu
- The Fifth People's Hospital of Suzhou, Infectious Disease Hospital Affiliated to Soochow University, Suzhou, China
| | - J Liu
- The Fifth People's Hospital of Suzhou, Infectious Disease Hospital Affiliated to Soochow University, Suzhou, China
| | - J Zhu
- School of Public Health and Key Laboratory of Public Health Safety, Fudan University, Shanghai, China
| | - J-W Alffenaar
- Faculty of Medicine and Health, School of Pharmacy, University of Sydney, Sydney, NSW, Australia, Westmead Hospital, Sydney, NSW, Australia, Marie Bashir Institute of Infectious Diseases and Biosecurity, University of Sydney, Sydney, NSW, Australia, ,
| | - Y Hu
- School of Public Health and Key Laboratory of Public Health Safety, Fudan University, Shanghai, China
| | - X Shen
- The Fifth People's Hospital of Suzhou, Infectious Disease Hospital Affiliated to Soochow University, Suzhou, China
| |
Collapse
|
20
|
Han W, Chen BJ, Gu B, Zhao GQ, Yu S, Wang XC, Liu QQ, Deng Z, Li WM, Zhao JF, Cao LP, Peng Y, Shen X, Zhu XH, Yu RC, Maekawa S, Uemura YJ, Jin CQ. Li(Cd,Mn)P: a new cadmium based diluted ferromagnetic semiconductor with independent spin & charge doping. Sci Rep 2019; 9:7490. [PMID: 31097727 PMCID: PMC6522530 DOI: 10.1038/s41598-019-43754-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 12/13/2018] [Indexed: 11/09/2022] Open
Abstract
We report a new diluted ferromagnetic semiconductor Li1+y(Cd,Mn)P, wherein carrier is doped via excess Li while spin is doped by isovalence substitution of Mn2+ into Cd2+. The extended Cd 4d-orbitals lead to more itinerant characters of Li1+y(Cd,Mn)P than that of analogous Li1+y(Zn,Mn)P. A higher Curie temperature of 45 K than that for Li1+y(Zn,Mn)P is obtained in Li1+y(Cd,Mn)P polycrystalline samples by Arrott plot technique. The p-type carriers are determined by Hall effect measurements. The first principle calculations and X-ray diffraction measurements indicate that occupation of excess Li is at Cd sites rather than the interstitial site. Consequently holes are doped by excess Li substitution. More interestingly Li1+y(Cd,Mn)P shows a very low coercive field (<100 Oe) and giant negative magnetoresistance (~80%) in ferromagnetic state that will benefit potential spintronics applications.
Collapse
Affiliation(s)
- W Han
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China.,Department of Physics and Electronic Engineering, Hebei Normal University for Nationalities, Chengde, 067000, China
| | - B J Chen
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - B Gu
- Kavli Institute for Theoretical Sciences & CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China.,Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, 319-1195, Japan
| | - G Q Zhao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - S Yu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - X C Wang
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Q Q Liu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Z Deng
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. .,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - W M Li
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - J F Zhao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - L P Cao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Y Peng
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,Department of Materials Science & Engineering, Sichuan University, Chengdu, China
| | - X Shen
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - X H Zhu
- Department of Materials Science & Engineering, Sichuan University, Chengdu, China
| | - R C Yu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - S Maekawa
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, 319-1195, Japan
| | - Y J Uemura
- Department of Physics, Columbia University, New York, New York, 10027, USA
| | - C Q Jin
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. .,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China. .,Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China.
| |
Collapse
|
21
|
Jin MY, Han Y, Liu YJ, Gu B, Chen J, Shi SS, Xu MZ, Cai CS, Tang YQ, Wu DP. [Treatment of central nervous system leukemia with CD19-chimeric antigen receptor T-cell immunotherapy: two cases report and literature review]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:650-653. [PMID: 30180466 PMCID: PMC7342845 DOI: 10.3760/cma.j.issn.0253-2727.2018.08.008] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
目的 探讨CAR-T细胞治疗中枢神经系统白血病(CNSL)的有效性和安全性。 方法 报道两例合并CNSL白血病患者抗CD19 CAR-T细胞治疗的过程及结果,并对相关文献进行复习。 结果 两例患者骨髓细胞形态学特征分别为伴B淋系表达的急性髓系白血病(AML)-M2和急性B淋巴细胞白血病(B-ALL),免疫分型符合AML-M2和B-ALL的异常表现,临床和实验室检查符合CNSL诊断标准,诊断明确后予以抗CD19 CAR-T细胞治疗,输注总量均为5.0×106/kg。回输后两例患者中枢神经系统症状缓解。例1影像学异常消失,治疗过程中出现细胞因子释放综合征(CRS),药物干预后好转;例2脑脊液微小残留病转阴,未出现明显CRS反应。 结论 CAR-T细胞治疗有望缓解CNSL,改善患者预后。
Collapse
Affiliation(s)
- M Y Jin
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Collaborative Innovation Centre of Hematology, Institute of Hematopoietic Stem Cell Transplantation, Key Laboratory of Thrombosis and Haemostasis of Ministry of Health, Suzhou 215006, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Chen GH, Huang HW, Wang Y, Liu HW, Xu LJ, Ma X, Xue SL, He XF, Wang Y, Gu B, Li CX, Qiu HY, Tang XW, Jin ZM, Miao M, Sun AN, Wu DP. [An experimental study of CD4 targeted chimeric antigen receptor modified T cell with anti-lymphoma activity]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:148-152. [PMID: 29562451 PMCID: PMC7342564 DOI: 10.3760/cma.j.issn.0253-2727.2018.02.014] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 探讨针对CD4膜蛋白的CAR-T细胞对CD4+T细胞淋巴瘤细胞的靶向特异性杀伤作用。 方法 采用重组DNA技术构建含4-1BB共刺激分子的第二代针对CD4的CAR慢病毒载体,应用293T细胞包装慢病毒,采用流式细胞术检测T细胞的转染效率及T细胞亚群动态变化,采用流式细胞术微球法检测培养上清中IFN-γ浓度。 结果 ①构建的慢病毒载体转染激活的T细胞后CAR膜蛋白阳性率达到50.0%~70.0%。T细胞激活后部分CD8+T细胞弱表达(dim)CD4膜蛋白。T细胞转染针对CD4的CAR慢病毒后CD4+ T细胞、CD8+ CD4dim T细胞逐渐被清除。②CAR-T细胞、对照组T细胞(空载体转染的T细胞)以8∶1效靶比分别与CD4+人T细胞淋巴瘤细胞株KARPAS 299细胞共培养24 h,杀伤效率分别为(96.9±2.1)%和(11.2±3.1)%,前者明显高于后者(t=7.137,P=0.028)。③CAR-T细胞单独培养,与转染慢病毒载体表达人CD4的K562细胞(K562-CD4细胞)、K562细胞共培养后上清中IFN-γ浓度分别为(1 785±268)、(15 648±2 168)、(1 978±354)pg/ml,CAR-T细胞与K562-CD4细胞共培养上清IFN-γ浓度明显高于其他两组,差异有统计学意义(P<0.01)。 结论 CD4特异性CAR-T细胞效应细胞免疫表型为CD8+ CD4+ T细胞,在体外具有杀伤正常CD4+ T细胞和CD4+ T细胞淋巴瘤细胞的活性,对于CD4dim T细胞也有较好的清除活性。
Collapse
Affiliation(s)
- G H Chen
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Collaborative Innovation Center of Hematology, Suzhou Institute of Blood and Marrow Transplantation, Suzhou 215006, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Gu B, Kaneko T, Zaw SYM, Sone PP, Murano H, Sueyama Y, Zaw ZCT, Okiji T. Macrophage populations show an M1-to-M2 transition in an experimental model of coronal pulp tissue engineering with mesenchymal stem cells. Int Endod J 2018; 52:504-514. [PMID: 30387178 DOI: 10.1111/iej.13033] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 03/16/2018] [Accepted: 10/30/2018] [Indexed: 12/20/2022]
Abstract
AIM To assess M1/M2 macrophage phenotypes in a coronal pulp regeneration model in rats, under the hypothesis that there are dynamic M1/M2 phenotype changes during the different stages of the pulp regeneration. METHODOLOGY The maxillary first molars of Wistar rats were pulpotomized, and biodegradable hydrogel-made scaffolds carrying rat bone marrow mesenchymal stem cells were implanted in the pulp chamber. After 3, 7 and 14 days, samples were processed for (i) histological analysis and double immunoperoxidase staining for CD68 (a general macrophage marker) and one of either CCR7 (an M1 marker), CD163 (an M2 marker) or CD206 (an M2 marker); (ii) real-time PCR for AIF1 (an M1 marker), CD163, CD206, IL-10 and TNF-α mRNA expression; and (iii) Western blotting for the detection of CD68, CCR7 and CD206 proteins. RESULTS Histological analysis of the implanted region revealed sparse cellular distribution at 3 days, pulp-like tissue with a thin dentine bridge-like structure at 7 days, and dentine bridge-like mineralized tissue formation and resorption of most scaffolds at 14 days. CCR7+ macrophages had the highest density at 3 days, and then significantly decreased until 14 days (P < 0.05). In contrast, M2 marker (CD163 or CD206) expressing macrophages had the lowest density at 3 days and significantly increased until 14 days (P < 0.05). AIF1 and TNF-α mRNA levels, and CD68 and CCR7 protein levels were highest at 3 days. CD163 and CD206 mRNA levels, and CD206 protein levels increased with time and showed the highest at 14 days. IL-10 mRNA was highest at 3 days, decreased at 7 days and increased at 14 days. CONCLUSIONS Macrophages in the regenerating pulp tissue underwent a distinct transition from M1-dominant to M2-dominant, suggesting that the M1-to-M2 transition of macrophages plays an important role in creating a favourable microenvironment necessary for pulp tissue regeneration.
Collapse
Affiliation(s)
- B Gu
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - T Kaneko
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - S Y M Zaw
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - P P Sone
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - H Murano
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Sueyama
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Z C T Zaw
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - T Okiji
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| |
Collapse
|
24
|
Gu B, Wang DH. [One case report of subglottic schwannomaresected with CO₂ laser]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 30:502-503. [PMID: 29871053 DOI: 10.13201/j.issn.1001-1781.2016.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 11/12/2022]
Abstract
A 26 years female patient was in hospital with repeated asthma, hoarseness and dyspnoea. Fiber laryngoscope examination showed that a mass in subglottic area. The tumor was completelyresected with CO₂ laser and finally diagnosed as subglottic schwannomaby pathological examination. The characteristics of subglottic schwannoma and the resection methods of CO₂ laser were discussed. There was no recurrence in three months follow.
Collapse
|
25
|
Yoo H, Gu B, Byun J, Cho Y, Hong S, Kim J, Kim C, Kim Y. P05.42 The natural course of atypical meningioma after gross total resection without adjuvant treatment. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Yoo
- Asan Medical Center, Seoul, Korea, Republic of
| | - B Gu
- Asan Medical Center, Seoul, Korea, Republic of
| | - J Byun
- Asan Medical Center, Seoul, Korea, Republic of
| | - Y Cho
- Asan Medical Center, Seoul, Korea, Republic of
| | - S Hong
- Asan Medical Center, Seoul, Korea, Republic of
| | - J Kim
- Asan Medical Center, Seoul, Korea, Republic of
| | - C Kim
- Asan Medical Center, Seoul, Korea, Republic of
| | - Y Kim
- Asan Medical Center, Seoul, Korea, Republic of
| |
Collapse
|
26
|
Gu B, Miao H, Zhang J, Hu J, Zhou W, Gu W, Wang W, Ning G. Clinical benefits of autologous haematopoietic stem cell transplantation in type 1 diabetes patients. Diabetes & Metabolism 2018; 44:341-345. [DOI: 10.1016/j.diabet.2017.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 12/13/2017] [Accepted: 12/16/2017] [Indexed: 12/29/2022]
|
27
|
Gu B, Stevenson GN, Ferreira A, Pathirana S, Sanderson J, Henry A, Alphonse J, Welsh AW. Applying spatial-temporal image correlation to the fetal kidney: Repeatability of 3D segmentation and volumetric impedance indices. Australas J Ultrasound Med 2018; 21:169-178. [DOI: 10.1002/ajum.12094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Bonita Gu
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
| | - Gordon N. Stevenson
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
| | - Ana Ferreira
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
| | - Sudeshni Pathirana
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
| | - Jennifer Sanderson
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
- Department of Maternal-Fetal Medicine; Royal Hospital for Women; Locked Bag 2000, Barker Street Randwick New South Wales 2031 Australia
| | - Amanda Henry
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
- Department of Maternal-Fetal Medicine; Royal Hospital for Women; Locked Bag 2000, Barker Street Randwick New South Wales 2031 Australia
- Women's and Children's Health; St George Hospital; Kogarah New South Wales Australia
| | - Jennifer Alphonse
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
| | - Alec W. Welsh
- School of Women's and Children's Health; University of New South Wales; Randwick New South Wales Australia
- Department of Maternal-Fetal Medicine; Royal Hospital for Women; Locked Bag 2000, Barker Street Randwick New South Wales 2031 Australia
| |
Collapse
|
28
|
Gu B, Bo GZ, Ke C. Exploration of Fecal Microbiota Transplantation in the Treatment of Refractory Diarrhea After Renal Transplantation. Transplant Proc 2018; 50:1326-1331. [PMID: 29880353 DOI: 10.1016/j.transproceed.2018.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 10/19/2017] [Accepted: 03/01/2018] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Exploration of fecal microbiota transplantation in the treatment of refractory diarrhea after renal transplantation. METHODS Summarize the etiology of 120 cases with diarrhea after renal transplantation from 2014 to 2017 in our hospital. There were 4 recipients of refractory diarrhea who accepted fecal microbiota transplantation with informed consent, and we collected clinical data of stool and bacterial culture, gut microbiota analysis, graft function, electrolytes, immunosuppressant concentrations of prognostic evaluation of patients with fecal transplantation. RESULTS The absorption of electrolyte is slightly higher and concentration of tacrolimus and creatinine were not significantly changed compared with before. CONCLUSION Fecal microbiota transplantation provides a new choice to refractory diarrhea after renal transplantation as an innovative treatment, but the effectiveness of fecal microbiota transplantation needs long-term observation and further evaluation through large sample data.
Collapse
Affiliation(s)
- B Gu
- Department of Transplantation, Xiangya School of Medicine, Changsha, Hunan, China.
| | - G Z Bo
- Department of Transplantation, Xiangya School of Medicine, Changsha, Hunan, China
| | - C Ke
- Department of Transplantation, Xiangya School of Medicine, Changsha, Hunan, China
| |
Collapse
|
29
|
Gu B, Khodakov AY, Ordomsky VV. Selectivity shift from paraffins to α-olefins in low temperature Fischer–Tropsch synthesis in the presence of carboxylic acids. Chem Commun (Camb) 2018; 54:2345-2348. [DOI: 10.1039/c7cc08692j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A shift to long chain α-olefins has been observed during Fischer–Tropsch synthesis over Co catalysts in the presence of carboxylic acids.
Collapse
Affiliation(s)
- B. Gu
- Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS
- Ecole Centrale de Lille
- Université de Lille Bât. C3
- 59655 Villeneuve d’Ascq
- France
| | - A. Y. Khodakov
- Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS
- Ecole Centrale de Lille
- Université de Lille Bât. C3
- 59655 Villeneuve d’Ascq
- France
| | - V. V. Ordomsky
- Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS
- Ecole Centrale de Lille
- Université de Lille Bât. C3
- 59655 Villeneuve d’Ascq
- France
| |
Collapse
|
30
|
Tang HJ, Liu YQ, Bian XC, Feng HL, Gu B, Sun H, Zuo CX, Zhou FY, Liu J. [Specific cytotoxicity of a novel HER2-based chimeric antigen receptor modified T lymphocytes against HER2-positive tumor cells]. Zhonghua Bing Li Xue Za Zhi 2017; 46:714-720. [PMID: 29050075 DOI: 10.3760/cma.j.issn.0529-5807.2017.10.011] [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 construct the third generation chimeric antigen receptor based on a novel humanized anti-HER2 H1-2 scFv, and to investigate the specific cytotoxicity of H1-2 CAR modified T lymphocytes(CAR-T) against HER2(+) tumor cells. Method: The expression cassette of the third generation CAR gene and anti-HER2 H1-2 scFv were constructed and cloned into lentivirus transfer plasmid, and then the third generation H1-2 CAR was transduced into human T lymphocytes using lentivirus.Enzyme linked immunosorbent assay was used to detect the expression of cytokines IL2, and LDH release assay was used to detect the cytotoxic effect of the H1-2 CAR-T.Finally, NOD/SCID mice and HER2(+) breast cancer cell line SKBR3 were used to detect the anti-tumor effect of H1-2 CAR-T in vivo. Results: The third generation H1-2 CAR was successfully constructed.H1-2 CAR-T secreted high dose of IL2 after confrontation with HER2(+) breast cancer cells.In vitro, the cytolytic rate of H1-2 CAR-T on high expression HER2(+) tumor cells was significantly higher than that in low expression HER2 or non-expression HER2 tumor cells. At the efficacy to target ratio of 20, the cytolytic rate of H1-2 CAR-T against breast cancer cell SK-BR-3 could reach (90.1±2.8)%, while the cytolytic rate of H1-2 CAR-T against HER2(-) breast cancer cell MDA-MB-231 was only (13.5±4.7)%. In the mouse xenograft tumor model, H1-2 CAR-T cells inhibited breast cancer growth in vivo.At the end of the experiments, the average tumor weight in the H1-2 CAR-T cell treatment group was (0.7±0.1) g, the non-transfected T cell therapeutic group was (1.2±0.2) g, and the PBS group was (1.2±0.2) g. There was significant difference between the H1-2 CAR-T therapeutic group and the non-transfected T cell therapeutic group (P<0.05). However, there was no significant difference between the non-transfected T cell therapeutic group and the PBS treatment group (P>0.05). Conclusion: The HER2-sepcific H1-2 CAR-T cells specifically kill HER2 positive cells, and further studies on CAR-T cells for the treatment of HER2(+) cancers are useful.
Collapse
Affiliation(s)
- H J Tang
- Department of Pathology and Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Li Y, Sun X, Wang Q, Zhou Q, Gu B, Liu H, Shi G, Jiang D, Niu T. The feasibility of direct treatment planning via contrast-enhanced computed tomography: an evaluation of dose differences based on the dimensional dose distribution comparison method. INT J RADIAT RES 2017. [DOI: 10.18869/acadpub.ijrr.15.2.167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
32
|
|
33
|
Bian XC, Yang ZL, Feng HL, Zhao XM, Gu B, Li J, Sun H, Liu YQ. [Establishment and validation of human cancer cell lines with stable Cas9 expression]. Zhonghua Bing Li Xue Za Zhi 2017; 46:43-48. [PMID: 28072976 DOI: 10.3760/cma.j.issn.0529-5807.2017.01.010] [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: 11/05/2022]
Abstract
Objective: To establish human cancer cell strains with stable Cas9 expression, and to validate the gene editing activity of Cas9 for simple gene editing in future study. Methods: Fifteen cancer cell lines of different tissue origins were infected with pLv-EF1α-Cas9-Flag-Neo or pLv-EF1α-Cas9-Flag-Puro by lentivirus and clone selection was employed to screen Cas9 stably expressed cancer cell lines. Afterward designed guide RNA vectors targeting TSC22 gene were transiently transfected into 3 of cell lines, and subsequently the gene editing activity of Cas9 was evaluated by genomic PCR, sequencing and Western blot. Results: Sixty-nine human cancer cell strains with stable Cas9 expression from different cancers were established, and by transient transfection with designed guide RNA, long fragment deletion was detected in TSC22 gene. Conclusions: Sixty-nine human cancer cell strains are successfully established with stable expression of Cas9 protein and gene editing activity. These cell strains may be employed in large-scale drug screening, screening of new drug targets and gene function investigation.
Collapse
Affiliation(s)
- X C Bian
- Department of Pathology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Qin T, Bi R, Fan W, Kang H, Ma P, Gu B. Novel mutations in quinolone resistance-determining regions of gyrA, gyrB, parC and parE in Shigella flexneri clinical isolates from eastern Chinese populations between 2001 and 2011. Eur J Clin Microbiol Infect Dis 2016; 35:2037-2045. [PMID: 27620866 DOI: 10.1007/s10096-016-2761-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 08/16/2016] [Indexed: 11/30/2022]
Abstract
The aim of this study was to evaluate the prevalence of fluoroquinolone resistance and mechanisms of selected fluoroquinolone resistance in Shigella flexneri isolates. A total of 624 S. flexneri strains isolated between 2001 and 2011 in Jiangsu Province of China were analysed for their fluoroquinolone susceptibility. The quinolone resistance-determining region of gyrA, gyrB, parC and parE were amplified and sequenced. In general, 90.5 % of S. flexneri exhibited resistance to nalidixic acid. The mean norfloxacin resistance rate was 22.4 % during the 11 years from 2001 to 2011 (6.4 % from 2001 to 2005 and 36.8 % from 2006 to 2011). Sequencing of gyrA, gyrB, parC and parE genes of all S. flexneri isolates showed that the mutation rate was as high as 93.9 %. In addition, 91.8 % and 92.3 % of S. flexneri harboured mutations in gyrA and parC, respectively. About 35.2 % of S. flexneri isolates susceptible to nalidixic acid contained mutations. Meanwhile, mutations were detected in 91.2 % of norfloxacin-susceptible strains, and almost all S. flexneri isolates resistant to fluoroquinolone contained mutations. To the best of our knowledge, this is the first study reporting the occurrence of point mutations Asn57Lys and His80Pro in gyrA and Ala85Thr, Asp111His and Ser129Pro in parC. Emerging fluoroquinolone resistance with a significantly high mutation rate of the gyrA and parC genes in S. flexneri in Jiangsu Province deserves attention, and monitoring antibiotic susceptibility is important for the effective management of S. flexneri infections.
Collapse
Affiliation(s)
- T Qin
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China
| | - R Bi
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China
| | - W Fan
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China
| | - H Kang
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - P Ma
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China. .,Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China.
| | - B Gu
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China. .,Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China.
| |
Collapse
|
35
|
Xu Y, Zhuang L, Kang H, Ma P, Xu T, Pan S, Gu B. Prevalence, resistance patterns, and characterization of integrons of Shigella flexneri isolated from Jiangsu Province in China, 2001-2011. Eur J Clin Microbiol Infect Dis 2016; 35:1347-53. [PMID: 27220330 DOI: 10.1007/s10096-016-2671-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 05/04/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To provide the epidemiology, resistance pattern, and characterization of integrons in Shigella flexneri isolated between 2001 and 2011 in Jiangsu Province. METHOD A total of 624 strains of S. flexneri were collected from both outpatients and inpatients in hospitals in Jiangsu Province from January 2001 to December 2011. The Kirby-Bauer disk diffusion method was used to perform the antimicrobial susceptibility test. Polymerase chain reaction (PCR) was used in the detection of integrons. Pulsed-field gel electrophoresis (PFGE) was applied in the homology studies. RESULT Serotype 2a accounted for the largest proportion in S. flexneri, namely 26.4 %. Notably, an increasing trend was detected in the resistance to common antimicrobial agents during the period 2001-2011. In recent years, more than 80.0 % isolates of S. flexneri have proved to be resistant to ampicillin, nalidixic acid, and tetracycline. The positive rates of class 1, class 2, and the atypical class 1 integrons in S. flexneri are 69.3 %, 87.8 %, and 89.2 % respectively. Most integrons detected in our research carry genes encoding resistance to trimethoprim and streptomycin. CONCLUSION Antimicrobial resistance in S. flexneri has demonstrated a continuous rising trend in Jiangsu Province. A high prevalence of integrons and gene cassettes play an important role in the transmission of drug resistance in S. flexneri. Effective measures are urgently needed to control the spread of multi-drug-resistant S. flexneri, and more continuing active surveillance of antimicrobial resistance should be established worldwide, especially in developing countries.
Collapse
Affiliation(s)
- Y Xu
- Department of General Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - L Zhuang
- Department of Acute Infectious Disease Prevention and Control, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, 210029, China
| | - H Kang
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - P Ma
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China.,Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China
| | - T Xu
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - S Pan
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
| | - B Gu
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China. .,Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, China.
| |
Collapse
|
36
|
Gu B, Chen GH, Shen HJ, Ma X, Fu CC, Han Y, Tang XW, Miao M, Qiu HY, Sun AN, Wu DP. [Improved clinical outcome of acute myeloid leukemia with FLT3-ITD mutation treated with sorafenib]. Zhonghua Nei Ke Za Zhi 2016; 55:293-7. [PMID: 27030618 DOI: 10.3760/cma.j.issn.0578-1426.2016.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To analyze the efficacy of sorafenib on the treatment of patients diagnosed as acute myeloid leukemia(AML) with FLT3-ITD mutation. METHODS From January 2012 to February 2015, 42 cases of AML with FLT3-ITD mutation according to MICM (morphology, immunology, cytogenetics and molecular) diagnosis system in our hospital were retrospectively analyzed. Thirty-two cases were refractory to chemotherapy or relapsed, who were treated with sorafenib or combined with chemotherapy. Ten patients relapsed after allogeneic hematopoietic stem cell transplantation (allo-HSCT), who were retreated with sorafenib or combined with donor lymphocyte infusion (DLI) or chemotherapy. In the first group, 13 of 32 patients accepted allo-HSCT. RESULTS The overall response rate of all 42 patients was 73.8%, including 4 (9.5%) complete molecular remission (CMR), 9 (21.4%) complete remission (CR), 8 (19%) complete remission with incomplete hematologic recovery (CRi), 10 (23.8%) partial remission (PR), and 11 (26.2%) none remission (NR). The response rate of sorafenib alone for 17 patients was 70.6%, and that of sorafenib plus chemotherapy was 66.7% (P=0.555). Thirteen patients who received allo-HSCT included 6 CMR/CR/CRi, 4 PR, and 3 NR before transplant. The 2-year overall survival (OS) rate and progress free survival (PFS) rate in all patients were 36.9% and 28.7%, and the corresponding median time were 18 months and 9 months respectively. The 2-year OS rate in 23 patients who received sorafenib combined with allo-HSCT was superior to that in 19 patients not receiving allo-HSCT (45.5% vs 23.9%, P=0.041), so was PFS rate (44.0% vs 9.7%, P=0.014). Twelve cases died of disease progression, four of infection, and one of chronic graft versus host disease after transplant. CONCLUSIONS Sorafenib combined with chemotherapy improves response rate of AML patients with FLT3-ITD mutation. Those who are treated with sorafenib plus allo-HSCT obtain better long-term survival.
Collapse
Affiliation(s)
- B Gu
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Collaborative Innovation Center of Hematology, Suzhou Institute of Blood and Marrow Transplantation, Suzhou 215006, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Jubb AM, Jiao Y, Eres G, Retterer ST, Gu B. Elevated gold ellipse nanoantenna dimers as sensitive and tunable surface enhanced Raman spectroscopy substrates. Nanoscale 2016; 8:5641-8. [PMID: 26893035 DOI: 10.1039/c5nr08920d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate large area arrays of elevated gold ellipse dimers with precisely controlled gaps for use as sensitive and highly controllable surface enhanced Raman scattering (SERS) substrates. The enhanced Raman signal observed with SERS arises from both localized and long range plasmonic effects. By controlling the geometry of a SERS substrate, in this case the size and aspect ratio of individual ellipses, the plasmon resonance can be tuned in a broad wavelength range, providing a method for designing the response of SERS substrates at different excitation wavelengths. Plasmon effects exhibited by the elevated gold ellipse dimer substrates are also demonstrated and confirmed through finite difference time domain (FDTD) simulations. A plasmon resonance red shift with an increase of the ellipse aspect ratio is observed, allowing systematic control of the resulting SERS signal intensity. Optimized elevated ellipse dimer substrates with 10 ± 2 nm gaps exhibit uniform SERS enhancement factors on the order of 10(9) for adsorbed p-mercaptoaniline molecules.
Collapse
Affiliation(s)
- A M Jubb
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | - Y Jiao
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | - G Eres
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - S T Retterer
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - B Gu
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| |
Collapse
|
38
|
Niimi Y, Kimata M, Omori Y, Gu B, Ziman T, Maekawa S, Fert A, Otani Y. Strong Suppression of the Spin Hall Effect in the Spin Glass State. Phys Rev Lett 2015; 115:196602. [PMID: 26588404 DOI: 10.1103/physrevlett.115.196602] [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] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Indexed: 06/05/2023]
Abstract
We have measured spin Hall effects in spin glass metals, CuMnBi alloys, with the spin absorption method in the lateral spin valve structure. Far above the spin glass temperature T(g) where the magnetic moments of Mn impurities are randomly frozen, the spin Hall angle of a CuMnBi ternary alloy is as large as that of a CuBi binary alloy. Surprisingly, however, it starts to decrease at about 4T(g) and becomes as little as 7 times smaller at 0.5T(g). A similar tendency was also observed in anomalous Hall effects in the ternary alloys. We propose an explanation in terms of a simple model considering the relative dynamics between the localized moment and the conduction electron spin.
Collapse
Affiliation(s)
- Y Niimi
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan
| | - M Kimata
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan
| | - Y Omori
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan
| | - B Gu
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - T Ziman
- Institut Laue Langevin, Boîte Postale 156, F-38042 Grenoble Cedex 9, France
- LPMMC (UMR 5493), Université Grenoble Alpes and CNRS, 25 rue des Martyrs, B.P. 166, 38042 Grenoble, France
| | - S Maekawa
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
- ERATO, Japan Science and Technology Agency, Sendai 980-8577, Japan
| | - A Fert
- Unité Mixte de Physique CNRS/Thales, 91767 Palaiseau France associée à l'Université de Paris-Sud, 91405 Orsay, France
| | - Y Otani
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan
- RIKEN-CEMS, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
39
|
Zhang HJ, Yamamoto S, Gu B, Li H, Maekawa M, Fukaya Y, Kawasuso A. Charge-to-Spin Conversion and Spin Diffusion in Bi/Ag Bilayers Observed by Spin-Polarized Positron Beam. Phys Rev Lett 2015; 114:166602. [PMID: 25955066 DOI: 10.1103/physrevlett.114.166602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 06/04/2023]
Abstract
Charge-to-spin conversion induced by the Rashba-Edelstein effect was directly observed for the first time in samples with no magnetic layer. A spin-polarized positron beam was used to probe the spin polarization of the outermost surface electrons of Bi/Ag/Al2O3 and Ag/Bi/Al2O3 when charge currents were only associated with the Ag layers. An opposite surface spin polarization was found between Bi/Ag/Al2O3 and Ag/Bi/Al2O3 samples with the application of a charge current in the same direction. The surface spin polarizations of both systems decreased exponentially with the outermost layer thickness, suggesting the occurrence of spin diffusion from the Bi/Ag interface to the outermost surfaces. This work provides a new technique to measure spin diffusion length.
Collapse
Affiliation(s)
- H J Zhang
- Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - S Yamamoto
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - B Gu
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Ibaraki 319-1195, Japan
| | - H Li
- Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - M Maekawa
- Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Y Fukaya
- Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - A Kawasuso
- Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| |
Collapse
|
40
|
Hu DJJ, Murray RT, Legg T, Runcorn TH, Zhang M, Woodward RI, Lim JL, Wang Y, Luan F, Gu B, Shum PP, Kelleher EJR, Popov SV, Taylor JR. Fiber-integrated 780 nm source for visible parametric generation. Opt Express 2014; 22:29726-29732. [PMID: 25606903 DOI: 10.1364/oe.22.029726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the development of a fully fiber-integrated pulsed master oscillator power fibre amplifier (MOPFA) source at 780 nm, producing 3.5 W of average power with 410 ps pulses at a repetition rate of 50 MHz. The source consists of an intensity modulated 1560 nm laser diode amplified in an erbium fiber amplifier chain, followed by a fiber coupled periodically poled lithium niobate crystal module for frequency doubling. The source is then used for generating visible light through four-wave mixing in a length of highly nonlinear photonic crystal fiber: 105 mW at 668 nm and 95 mW at 662 nm are obtained, with pump to anti-Stokes conversion slope efficiencies exceeding 6% in both cases.
Collapse
|
41
|
Wang HQ, Gu B, Yi Y, Dong BY, Zhao YD, Xuan Y, Li SY, Jiang WX, Ma J. Study of regulatory pathway of related molecules in hemolytic uremic syndrome. Eur Rev Med Pharmacol Sci 2014; 18:2886-2894. [PMID: 25339483] [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: 06/04/2023]
Abstract
OBJECTIVE To screen Hemolytic Uremic Syndrome (HUS) related differentially expressed genes using the microarray data of neonatal microvascular endothelial cells from human skin treated with or without Shiga toxin, and study the the mechanism of HUS from multiple angles. MATERIALS AND METHODS The microarray dataset GSE32710 was download from gene expression database GEO (Gene Expression Omnibus), which included a total of 12 samples, 6 samples were treated with Shiga toxin while the others were normal without any treatments. Then the raw chip data were preprocessed by R package, and T-test was utilized for differentially expressed genes screening. The selected differentially expressed genes were subjected to GO functional and KEGG pathway analysis. Following that, human protein interaction network, synergetic effects among the differentially expressed genes and regulation of post-transcriptional miRNA were integrated so as to construct a molecular interaction network associated with HUS and excavate the sub-function modules. RESULTS Trough differential expression screening, 195 of HUS related marker genes were obtained, and 294 of gene pairs with significant co-expression were achieved. Molecular interaction network associated with HUS excavated 302 miRNAs and 117 differentially expressed genes, among which miRNA-30c and miRNA-30d may play important roles during the development of HUS. CONCLUSIONS In this study, we used a method that explained the biological mechanism of HUS systematically from gene transcription level and different levels of biological information such as protein interaction, post-transcriptional regulation of gene expression as well as synergy effects of gene expression, which may provide new therapeutic targets for HUS.
Collapse
Affiliation(s)
- H-Q Wang
- The Department of Nephrology, Jing'an District Centre Hospital of Shanghai, (Huashan Hospital Fudan University Jing'an Branch), Shanghai, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Li X, Zou H, Gu B, Zhu Y, Chen Q. A novel HLA allele, HLA-B*37:06:02, identified in a Chinese family. Tissue Antigens 2014; 84:516-7. [PMID: 25220653 DOI: 10.1111/tan.12434] [Citation(s) in RCA: 3] [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: 07/02/2014] [Accepted: 08/04/2014] [Indexed: 11/27/2022]
Abstract
The novel allele HLA-B*37:06:02 differs from HLA-B*37:06:01 by a silent nucleotide substitution at codon 47P.
Collapse
Affiliation(s)
- X Li
- HLA Typing Laboratory, Sichuan Cord Blood Bank, Chengdu, Sichuan, China
| | | | | | | | | |
Collapse
|
43
|
Cox B, Wang L, Bradley T, Gu B, Kelley K, Potters L. Single-Institution Experience With Radium-223 Dichloride (Ra-223) for Metastatic Castrate-Resistant Prostate Cancer (mCRPC). Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1462] [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: 10/24/2022]
|
44
|
Gu B, Yang Z, Huang S, Xiao S, Zhang B, Yang L, Zhao J, Zhao Z, Shen J, Liu J. Radiation-induced Brachial Plexus Injury After Radiotherapy for Nasopharyngeal Carcinoma. Jpn J Clin Oncol 2014; 44:736-742. [DOI: 10.1093/jjco/hyu062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
45
|
Cook A, Gu B, Lyon S, Newman R, Engelberg D. Towards a more Realistic Experimental Protocol for the Study of Atmospheric Chloride-Induced Stress Corrosion Cracking in Intermediate Level Radioactive Waste Container Materials. ACTA ACUST UNITED AC 2014. [DOI: 10.1557/opl.2014.649] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe occurrence of Atmospheric chloride-Induced Stress Corrosion Cracking (AISCC) under wetted deposits of MgCl2 or sea-salt at 70°C has been investigated at various Relative Humidities (RH). The appearance of AISCC is a function of the environmental RH. At 33% RH (the deliquescence point of MgCl2), AISCC generated under MgCl2 or sea-salt deposits is of a similar appearance with regards to the number of cracks produced and average crack length. At 50% RH sea-salt seems to be more aggressive at least in terms of crack frequency. This observation may highlight the significance of carnallite (KMgCl3.6H2O) in promoting AISCC in types 304L and 316L stainless steels. The use of accelerated testing methods to validate apparent thresholds in chloride deposition density and other critical factors that influence the initiation and propagation of AISCC is briefly discussed.
Collapse
|
46
|
Abstract
BACKGROUND The technique of tissue expansion has been widely applied in plastic surgery since the 1980 s. Implantation in the lower limb region, external port placement, and young patient age were known as risk factors for complications. Over the years, surgical experience has increased along with improved patient management and expander manufacturing. The aim of this study was to identify possible changes in risk factors regarding complications in tissue expansion. METHOD A retrospective, single-institution large sample observational study over a 5-year period (2006-2010) was performed involving 481 tissue expanders in 344 patients. Patients underwent surgical treatment for resurfacing scar tissue in the scalp, face, neck, nose, and limbs, but not breast. In addition, the results are discussed based on a comprehensive review of the literature published between 1995 and 2009. RESULTS Statistical analysis showed significant correlations between cheek and hematoma (P=0.0133), scalp and dehiscence (P=0.0139), number of expanders per region and leakage (P=0.0379), number of expanders per region and overall complications (P=0.0252). Factors such as gender, age, tobacco use, and repeated expander implantation had no significant influence on the incidence of complications. The lower extremity region and young patient age ceased to show a statistical correlation with complications. The number of expanders per region was identified as a risk factor that has been disregarded so far. CONCLUSION Evidence suggests a recent change in risk factors for tissue expansion-related complications. Consideration of updated risk factors may help to further improve outcomes in tissue expansion.
Collapse
Affiliation(s)
- J Wang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - X Huang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - K Liu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - B Gu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Q Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| |
Collapse
|
47
|
Annadi A, Zhang Q, Renshaw Wang X, Tuzla N, Gopinadhan K, Lü WM, Roy Barman A, Liu ZQ, Srivastava A, Saha S, Zhao YL, Zeng SW, Dhar S, Olsson E, Gu B, Yunoki S, Maekawa S, Hilgenkamp H, Venkatesan T, Ariando. Anisotropic two-dimensional electron gas at the LaAlO₃/SrTiO₃ (110) interface. Nat Commun 2013; 4:1838. [PMID: 23673623 PMCID: PMC3674248 DOI: 10.1038/ncomms2804] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 03/25/2013] [Indexed: 11/15/2022] Open
Abstract
The observation of a high-mobility two-dimensional electron gas between two insulating complex oxides, especially LaAlO3/SrTiO3, has enhanced the potential of oxides for electronics. The occurrence of this conductivity is believed to be driven by polarization discontinuity, leading to an electronic reconstruction. In this scenario, the crystal orientation has an important role and no conductivity would be expected, for example, for the interface between LaAlO3 and (110)-oriented SrTiO3, which should not have a polarization discontinuity. Here we report the observation of unexpected conductivity at the LaAlO3/SrTiO3 interface prepared on (110)-oriented SrTiO3, with a LaAlO3-layer thickness-dependent metal-insulator transition. Density functional theory calculation reveals that electronic reconstruction, and thus conductivity, is still possible at this (110) interface by considering the energetically favourable (110) interface structure, that is, buckled TiO2/LaO, in which the polarization discontinuity is still present. The conductivity was further found to be strongly anisotropic along the different crystallographic directions with potential for anisotropic superconductivity and magnetism, leading to possible new physics and applications. Although LaAlO3 and SrTiO3 are both insulators, when they are brought together at a (100) interface, a highly conducting two-dimensional electron gas forms between them. Annandi et al. show that this also happens at a (110) interface, counter to expectations that it should not.
Collapse
Affiliation(s)
- A Annadi
- NUSNNI-Nanocore, National University of Singapore, Singapore 117411, Singapore
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Xu G, Jiang HW, Fang J, Wen H, Gu B, Liu J, Zhang LM, Ding Q, Zhang YF. An improved dosage regimen of sertraline hydrochloride in the treatment for premature ejaculation: an 8-week, single-blind, randomized controlled study followed by a 4-week, open-label extension study. J Clin Pharm Ther 2013; 39:84-90. [PMID: 24313633 DOI: 10.1111/jcpt.12115] [Citation(s) in RCA: 8] [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] [Received: 07/19/2012] [Accepted: 11/04/2013] [Indexed: 01/23/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE This study aimed at evaluating the safety and efficacy of an improved dosage regimen of sertraline in patients with premature ejaculation (PE) and to examine whether the premature ejaculation diagnostic tool (PEDT) can be used as a measure of treatment response in these patients. METHODS A total of 218 PE patients were randomized into control (n = 61) and treatment (n = 157) groups to receive mycelium of cordyceps sinensis C4 and sertraline 50 mg daily for 8 weeks, respectively. Following this blinded stage, sixty-three patients chose to take sertraline 100 mg daily for an additional 4-week period, and 80 other patients continued treatment with sertraline 50 mg. Main outcome measures include intravaginal ejaculatory latency time (IELT), PEDT score and Clinical Global Impression of Change (CGIC) score. RESULTS At weeks 4 and 8, mean IELT of patients who subsequently chose to take 100 mg of sertraline was significantly lower than that of patients who continued taking 50 mg of sertraline, although the IELT value was comparable between the two groups of patients at baseline. However, with an additional 4-week treatment, the mean IELT increased significantly more in the 100-mg group than in the 50-mg continuation group. Similar results were also obtained in the analyses of the PEDT and CGIC scores. Both regimens were well tolerated, and relapse rate did not differ significantly between the two groups. WHAT IS NEW AND CONCLUSION These findings suggest that PE patients not responding to an 8-week treatment with sertraline 50 mg can benefit from an additional 4-week treatment with sertraline 100 mg and that the PEDT may be a valid measure of treatment response in PE patients.
Collapse
Affiliation(s)
- G Xu
- Department of Urologic Surgery, Huashan Hospital Affiliated to Fudan University, Shanghai, China
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Li JY, Huang JY, Xing B, Ren KW, Li M, Wei D, Gu PY, Chen G, Gu B, Zhang GF, Hu WX. SP600125, a JNK inhibitor, suppresses growth of JNK-inactive glioblastoma cells through cell-cycle G2/M phase arrest. Pharmazie 2012; 67:942-946. [PMID: 23210245] [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: 06/01/2023]
Abstract
SP600125 is a well studied inhibitor of c-Jun N-terminal kinase (JNK). Its direct biochemical effects on JNK-inactive tumor cells are usually ignored. In this study, we investigated the effects of SP600125 on JNK-inactive U251 human glioblastoma cells. Our results demonstrate that, 20 microM or more SP600125 can induce significant cell growth inhibition and cell-cycle G2/M phase arrest in U251 cells. Interestingly, we also found that SP600125 can stop the duplicated chromosomes from separating into two cells and the karyokinesis progression. Our study opened up a new perspective for further studies involved in JNK inhibitors or anti-glioma therapy.
Collapse
Affiliation(s)
- J Y Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing City, Nanjing, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Wei D, Niimi Y, Gu B, Ziman T, Maekawa S, Otani Y. The spin Hall effect as a probe of nonlinear spin fluctuations. Nat Commun 2012; 3:1058. [DOI: 10.1038/ncomms2063] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 08/14/2012] [Indexed: 11/09/2022] Open
|