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Pang H, Peng Y, Zhang R, Gao Z, Lai X, Li D, Zhao X, Wang Y, Pei H, Qiao B, Ji Y, Wu Q. A triggered DNA nanomachine with enzyme-free for the rapid detection of telomerase activity in a one-step method. Anal Chim Acta 2024; 1299:342420. [PMID: 38499416 DOI: 10.1016/j.aca.2024.342420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/08/2024] [Accepted: 02/26/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Telomerase is considered a biomarker for the early diagnosis and clinical treatment of cancer. The rapid and sensitive detection of telomerase activity is crucial to biological research, clinical diagnosis, and drug development. However, the main obstacles facing the current telomerase activity assay are the cumbersome and time-consuming procedure, the easy degradation of the telomerase RNA template and the need for additional proteases. Therefore, it is necessary to construct a new method for the detection of telomerase activity with easy steps, efficient reaction and strong anti-interference ability. RESULTS Herein, an efficient, enzyme-free, economical, sensitive, fluorometric detection method for telomerase activity in one-step, named triggered-DNA (T-DNA) nanomachine, was created based on target-triggered DNAzyme-cleavage activity and catalytic molecular beacon (CMB). Telomerase served as a switch and extended few numbers of (TTAGGG)n repeat sequences to initiate the signal amplification in the T-DNA nanomachine, resulting in a strong fluorescent signal. The reaction was a one-step method with a shortened time of 1 h and a constant temperature of 37 °C, without the addition of any protease. It also sensitively distinguished telomerase activity in various cell lines. The T-DNA nanomachine offered a detection limit of 12 HeLa cells μL-1, 9 SK-Hep-1 cells μL-1 and 3 HuH-7 cells μL-1 with a linear correlation detection range of 0.39 × 102-6.25 × 102 HeLa cells μL-1 for telomerase activity. SIGNIFICANCE In conclusion, our study demonstrated that the triggered-DNA nanomachine fulfills the requirements for rapid detection of telomerase activity in one-step under isothermal and enzyme-free conditions with excellent specificity, and its simple and stable structure makes it ideal for complex systems. These findings indicated the application prospect of DNA nanomachines in clinical diagnostics and provided new insights into the field of DNA nanomachine-based bioanalysis.
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Affiliation(s)
- Huajie Pang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Yanan Peng
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Rui Zhang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Zhijun Gao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Xiangde Lai
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Dongxia Li
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Xuan Zhao
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Yuanyuan Wang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Hua Pei
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Bin Qiao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
| | - Yuxiang Ji
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, Hainan Medical University, Haikou, 571199, China.
| | - Qiang Wu
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
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Peng Y, Li D, Qiao B, Gao Z, Pu Q, Pang H, Lai X, Zhang R, Zhao X, Zhao G, Xu D, Han F, Wang Y, Ji Y, Pei H, Wu Q. Protonation-mediated DNA tile self-assembly with nuclease resistance characteristic for signal-amplified detection of microRNAs. Biosens Bioelectron 2024; 246:115869. [PMID: 38039736 DOI: 10.1016/j.bios.2023.115869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023]
Abstract
DNA nanotechnology, developing rapidly in recent years, has unprecedented superiorities in biological application-oriented research including high programmability, convenient functionalization, reconfigurable structure, and intrinsic biocompatibility. However, the susceptibility to nucleases in the physiological environment has been an obstacle to applying DNA nanostructures in biological science research. In this study, a new DNA self-assembly strategy, mediated by double-protonated small molecules instead of classical metal ions, is developed to enhance the nuclease resistance of DNA nanostructures while retaining their integrality and functionality, and the relative application has been launched in the detection of microRNAs (miRNAs). Faced with low-abundance miRNAs, we integrate hybrid chain reaction (HCR) with DNA self-assembly in the presence of double-protonated small molecules to construct a chemiluminescence detection platform with nuclease resistance, which utilizes the significant difference of molecular weight between DNA arrays and false-positive products to effectively separate of reaction products and remove the detection background. This strategy attaches importance to the nucleic acid stability during the assay process via improving nuclease resistance while rendering the detection results for miRNAs more authentic and reliable, opening our eyes to more possibilities for the multiple applications of customized DNA nanostructures in biology, including bioassay, bioimaging, drug delivery, and cell modulation.
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Affiliation(s)
- Yanan Peng
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Dongxia Li
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Bin Qiao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, PR China
| | - Zhijun Gao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Qiumei Pu
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Huajie Pang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Xiangde Lai
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Rui Zhang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Xuan Zhao
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Guangyuan Zhao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Dan Xu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Pharmacy, Hainan Medical University, Haikou, 571199, PR China
| | - Feng Han
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China
| | - Yuanyuan Wang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, PR China
| | - Yuxiang Ji
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Hua Pei
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China
| | - Qiang Wu
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, PR China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, PR China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, PR China.
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Arntzen T, Mikkelsen A, Emblem R, Lai X, Haugen G. Prenatal Diagnosis of Esophageal Atresia - Performance and Consequences. J Pediatr Surg 2023; 58:2075-2080. [PMID: 37407414 DOI: 10.1016/j.jpedsurg.2023.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/25/2023] [Accepted: 05/14/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND Prenatal diagnosis of congenital malformations is considered favorable. Esophageal atresia (EA) is prenatally detected in 10-40% of patients. The aims of our study were to assess factors influencing the prenatal detection rate and to study the outcome in EA patients with and without prenatal diagnosis. METHOD We included 136 patients in two time periods, group 1 (1996-2002, n = 68) and group 2 (2014-2020, n = 68). We registered clinical variables; prenatal signs, perinatal and postnatal outcome from the electronic patient record. RESULTS Twenty-five patients (18%) had a prenatal diagnosis of EA, significantly more during 2014-2020 (28%), than during 1996-2002 (9%). Patients with EA type A or B and with associated anomalies had increased likelihood of prenatal diagnosis, odds ratio (OR) 9.00 (1.99-40.69) and 3.53 (1.24-10.06), respectively. Among the 25 patients with prenatal diagnosis all had polyhydramnios and 16 had small/absent stomach. Prenatally diagnosed patients arrived significantly earlier at the surgical unit (median 2 h (2 h-1 days) vs 21 h (2 h-1275 days)), had more delayed primary anastomosis (OR 8.80 (2.68-28.92)) and anastomotic stricture (OR 3.11 (1.20-8.04)), longer length of stay (median 62 days (11-212 days) vs 20 days (2-270 days)) and longer time on ventilator (median 5 days (1-25 days) vs 1.5 days (0.5-33 days)) compared to patients without prenatal diagnosis. In multivariate analysis prenatal diagnosis predicts length of stay. CONCLUSION Prenatally diagnosed EA patients have more; type A and B malformations, associated anomalies and neonatal morbidity. Consequences of the assumed benefits of prenatal diagnosis; opportunity of early arrival to surgical care and prenatal counselling, must be further studied.
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Affiliation(s)
- T Arntzen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Section for Pediatric Surgery, Oslo University Hospital, Oslo, Norway.
| | - A Mikkelsen
- Section for Pediatric Surgery, Oslo University Hospital, Oslo, Norway
| | - R Emblem
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Section for Pediatric Surgery, Oslo University Hospital, Oslo, Norway
| | - X Lai
- Oslo Centre for Biostatistics and Epidemiology, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - G Haugen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Fetal Medicine, Division of Obstetrics and Gynaecology, Oslo University Hospital, Oslo, Norway
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Lai X, Zhao X, Peng Y, Zhang R, Pang H, Gao Z, Li D, Cao P, Pu Q, Qiao B, Pei H, Wu Q. A specific and low background nucleic acids sensing strategy based on rolling circle amplification coupled with a magnetic DNA machine. Chem Commun (Camb) 2023; 59:10153-10156. [PMID: 37530562 DOI: 10.1039/d3cc02838k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
We propose a universal fluorescence method for detection of nucleic acids based on rolling circle amplification (RCA) combined with a magnetic DNA machine and using dengue virus nucleic acids as an example target. RCA specifically amplifies the target and yields a large number of initiators employing heat-labile double-stranded DNase. The magnetic DNA machine produces a fluorescence signal and eliminates background noise. This method achieved a wide linear range, promising recovery and ultrahigh recognition specificity for one-base mismatches, and indicates the potential application of this sensing strategy in the clinical diagnosis of nucleic acids of pathogens.
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Affiliation(s)
- Xiangde Lai
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Xuan Zhao
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Yanan Peng
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Rui Zhang
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Huajie Pang
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Zhijun Gao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Dongxia Li
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Peipei Cao
- School of Basic Medicine and Life Sciences, Hainan Medical University, Haikou 571199, China
| | - Qiumei Pu
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Bin Qiao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou 571199, China
| | - Hua Pei
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
| | - Qiang Wu
- The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China.
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, China.
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou 571199, China
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Bai S, Song D, Chen M, Lai X, Xu J, Dong F. The association between mammographic density and breast cancer molecular subtypes: a systematic review and meta-analysis. Clin Radiol 2023; 78:622-632. [PMID: 37230842 DOI: 10.1016/j.crad.2023.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/12/2023] [Accepted: 04/21/2023] [Indexed: 05/27/2023]
Abstract
AIM To conduct a systematic review and meta-analysis to evaluate the whether high mammographic density (MD) is differentially associated with all subtypes of breast cancer. MATERIALS AND METHODS The PubMed, Cochrane Library, and Embase databases were searched systematically in October 2022 to include all studies that investigated the association between MD and breast cancer subtype. Aggregate data of 17,193 breast cancer cases from 23 studies were selected, including five cohort/case-control and 18 case-only studies. The relative risk (RR) of MD were combined using random/fixed effects models for case-control studies, and for case-only studies, relative risk ratios (RRRs) were a combination of luminal A, luminal B, and HER2-positive versus triple-negative tumours. RESULTS Women in the highest density category in case-control/cohort studies had a 2.24-fold (95% confidence interval [CI] 1.53, 3.28), 1.81-fold (95% CI 1.15, 2.85), 1.44-fold (95% CI 1.14, 1.81), and 1.59-fold (95% CI 0.89, 2.85) higher risk of triple-negative, HER-2 (human epidermal growth factor receptor 2) positive, luminal A, and luminal B breast cancer compared to women in the lowest density category. RRRs for breast tumours being luminal A, luminal B, and HER-2 positive versus triple-negative in case-only studies were 1.62 (95% CI 1.14, 2.31), 1.81 (95% CI 1.22, 2.71) and 2.58 (95% CI 1.63, 4.08), respectively, for BIRADS 4 versus BIRADS 1. CONCLUSION The evidence indicates MD is a potent risk factor for the majority of breast cancer subtypes to different degrees. Increased MD is more strongly linked to HER-2-positive cancers compared to other breast cancer subtypes. The application of MD as a subtype-specific risk marker may facilitate the creation of personalised risk prediction models and screening procedures.
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Affiliation(s)
- S Bai
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China
| | - D Song
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China
| | - M Chen
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China
| | - X Lai
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China
| | - J Xu
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China.
| | - F Dong
- Department of Ultrasound, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China.
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Peng Y, Gao Z, Qiao B, Li D, Pang H, Lai X, Pu Q, Zhang R, Zhao X, Zhao G, Xu D, Wang Y, Ji Y, Pei H, Wu Q. Size-Controlled DNA Tile Self-Assembly Nanostructures Through Caveolae-Mediated Endocytosis for Signal-Amplified Imaging of MicroRNAs in Living Cells. Adv Sci (Weinh) 2023:e2300614. [PMID: 37189216 PMCID: PMC10375201 DOI: 10.1002/advs.202300614] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/30/2023] [Indexed: 05/17/2023]
Abstract
Signal-amplified imaging of microRNAs (miRNAs) is a promising strategy at the single-cell level because liquid biopsy fails to reflect real-time dynamic miRNA levels. However, the internalization pathways for available conventional vectors predominantly involve endo-lysosomes, showing nonideal cytoplasmic delivery efficiency. In this study, size-controlled 9-tile nanoarrays are designed and constructed by integrating catalytic hairpin assembly (CHA) with DNA tile self-assembly technology to achieve caveolae-mediated endocytosis for the amplified imaging of miRNAs in a complex intracellular environment. Compared with classical CHA, the 9-tile nanoarrays possess high sensitivity and specificity for miRNAs, achieve excellent internalization efficiency by caveolar endocytosis, bypassing lysosomal traps, and exhibit more powerful signal-amplified imaging of intracellular miRNAs. Because of their excellent safety, physiological stability, and highly efficient cytoplasmic delivery, the 9-tile nanoarrays can realize real-time amplified monitoring of miRNAs in various tumor and identical cells of different periods, and imaging effects are consistent with the actual expression levels of miRNAs, ultimately demonstrating their feasibility and capacity. This strategy provides a high-potential delivery pathway for cell imaging and targeted delivery, simultaneously offering a meaningful reference for the application of DNA tile self-assembly technology in relevant fundamental research and medical diagnostics.
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Affiliation(s)
- Yanan Peng
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Zhijun Gao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Bin Qiao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, P. R. China
| | - Dongxia Li
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Huajie Pang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Xiangde Lai
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Qiumei Pu
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Rui Zhang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Xuan Zhao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Guangyuan Zhao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Dan Xu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Pharmacy, Hainan Medical University, Haikou, 571199, P. R. China
| | - Yuanyuan Wang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, P. R. China
| | - Yuxiang Ji
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Hua Pei
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
| | - Qiang Wu
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, P. R. China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, P. R. China
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Brendefur Corwin LM, Campbell P, Jakobsen K, Müller F, Lai X, Unemo M, Leegaard TM, Vildershøj Bjørnholt J, Olsen AO. Improvement in Neisseria gonorrhoeae culture rates by bedside inoculation and incubation at a clinic for sexually transmitted infections. Ann Clin Microbiol Antimicrob 2023; 22:27. [PMID: 37072830 PMCID: PMC10114361 DOI: 10.1186/s12941-023-00576-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 03/28/2023] [Indexed: 04/20/2023] Open
Abstract
BACKGROUND Culture of Neisseria gonorrhoeae is essential for surveillance of complete antimicrobial susceptibility profiles. In 2014, the culture success rate of N. gonorrhoeae from samples taken at the clinic for sexually transmitted infections (STI clinic), Oslo University Hospital, Norway, was only 20%. The present study aimed to improve gonococcal culture rates using bedside inoculation of patient samples on gonococcal agar plates and incubation at the STI clinic. METHODS This prospective quality improvement study was conducted by the STI clinic and the Department of Microbiology at Oslo University Hospital from May 2016 - October 2017. When culture of N. gonorrhoeae was clinically indicated, we introduced a parallel 'bedside culture' at the STI clinic and compared results with the standard culture at the microbiology department. Samples were taken from urethra, anorectum, pharynx and cervix. Culture rates were compared across symptomatic and asymptomatic anatomical sites. RESULTS From 596 gonococcal-positive PCR samples, bedside culture had a significantly higher success rate of 57% compared to 41% with standard culture (p < 0.05). Overall, culture rate from symptomatic sites was 91% v. 45% from asymptomatic sites. The culture rates from different anatomical sites were as follows: urethra 93%, anorectum 64%, pharynx 28% and cervix 70%. Bedside culture significantly (p < 0.05) improved the culture rates for symptomatic urethral and asymptomatic pharyngeal samples. CONCLUSIONS Where feasible, bedside inoculation on gonococcal agar plates and incubation of samples from patients with gonorrhoea is recommended. This will improve the culture diagnostics and provide additional gonococcal isolates for antimicrobial resistance surveillance.
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Affiliation(s)
- L M Brendefur Corwin
- Department of Microbiology, Oslo University Hospital, Oslo, Norway.
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
| | - P Campbell
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway
- National Advisory Unit for Sexually Transmitted Infections, Oslo University Hospital, Oslo, Norway
| | - K Jakobsen
- Department of Microbiology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - F Müller
- Department of Microbiology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - X Lai
- Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - M Unemo
- WHO Collaborating Centre for Gonorrhoea and other STIs, National Reference Laboratory for STIs, Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Institute for Global Health, University College London (UCL), London, UK
| | - T M Leegaard
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway
| | - J Vildershøj Bjørnholt
- Department of Microbiology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - A O Olsen
- Section for Respiratory, Blood-borne and Sexually Transmitted Infections, Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway
- Department of Community Medicine and Global Health, Institute of Health and Society, University of Oslo, Oslo, Norway
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Peng Y, Pang H, Gao Z, Li D, Lai X, Chen D, Zhang R, Zhao X, Chen X, Pei H, Tu J, Qiao B, Wu Q. Kinetics-accelerated one-step detection of MicroRNA through spatially localized reactions based on DNA tile self-assembly. Biosens Bioelectron 2023; 222:114932. [PMID: 36462429 DOI: 10.1016/j.bios.2022.114932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/13/2022] [Accepted: 11/17/2022] [Indexed: 11/29/2022]
Abstract
The localization of isothermal amplification systems has elicited extensive attention due to the enhanced reaction kinetics when detecting ultra-trace small-molecule nucleic acids. Therefore, the seek for an appropriate localization cargo of spatially confined reactions is urgent. Herein, we have developed a novel approach to localize the catalytic hairpin assembly (CHA) system into the DNA tile self-assembly nanostructure. Thanks to the precise programming and robust probe loading capacity, this strategy achieved a 2.3 × 105-fold higher local reaction concentration than a classical CHA system with enhanced reaction kinetics in theory. From the experimental results, this strategy could reach the reaction plateau faster and get access to a magnified effect of 1.57-6.99 times higher in the linear range of microRNA (miRNA) than the simple CHA system. Meanwhile, this strategy satisfied the demand for the one-step detection of miRNA in cell lysates at room temperature with good sensitivity and specificity. These features indicated its excellent potential for ultra-trace molecule detection in clinical diagnosis and provided new insights into the field of bioassays based on DNA tile self-assembly nanotechnology.
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Affiliation(s)
- Yanan Peng
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Huajie Pang
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Zhijun Gao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Dongxia Li
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Xiangde Lai
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Delun Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou, 570228, China
| | - Rui Zhang
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Xuan Zhao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China; Department of Clinical Laboratory, Hainan Cancer Hospital, Haikou, 570311, China
| | - Xinping Chen
- Department of Clinical Laboratory, Hainan Cancer Hospital, Haikou, 570311, China
| | - Hua Pei
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Jinchun Tu
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou, 570228, China
| | - Bin Qiao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
| | - Qiang Wu
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
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Jiang C, Lai X, Han F, Gao Z, Yang H, Zhao X, Pang H, Qiao B, Pei H, Wu Q. Shape dependency of gold nanorods through TMB 2+-mediated etching for the visual detection of NT-proBNP. RSC Adv 2023; 13:10503-10507. [PMID: 37021096 PMCID: PMC10068753 DOI: 10.1039/d3ra00280b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/15/2023] [Indexed: 04/05/2023] Open
Abstract
Heart failure (HF) is a major public health problem triggered by heart circulation disorders. Early detection and diagnosis are conducive to the prevention and treatment of HF. Hence, it is necessary to establish a simple and sensitive method to monitor the diagnostic biomarkers of HF. The N-terminal B-type natriuretic peptide precursor (NT-proBNP) is acknowledged as a sensitive biomarker. In this study, a visual detection method for NT-proBNP was developed based on the oxidized 3,3′,5,5′-tetramethylbenzidine (TMB2+)-mediated etching of gold nanorods (AuNRs) and double-antibody-sandwich ELISA. The etching color for different amounts of NT-proBNP was obvious and significant differences could be ascertained based on the blue-shift of the longitudinal localized surface plasmon resonance (LLSPR) of the AuNRs. The results could be observed by the naked eye. The constructed system showed a concentration range from 6 to 100 ng mL−1 and a low detection limit of 6 ng mL−1. This method exhibited negligible cross-reactivity toward other proteins, and the recoveries of the samples ranged from 79.99% to 88.99%. These results demonstrated that the established method is suitable for the simple and convenient detection of NT-proBNP. Visual detection of NT-proBNP based on the principle of HRP-catalyzed TMB conversion into TMB2+ to mediate gold nanorods etching and an ELISA system.![]()
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Affiliation(s)
- Chenlong Jiang
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Xiangde Lai
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Feng Han
- Department of Clinical Laboratory of the First Affiliated Hospital, Hainan Medical UniversityHaikou570102China
| | - Zhijun Gao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Haixia Yang
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Xuan Zhao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Huajie Pang
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Bin Qiao
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Hua Pei
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
| | - Qiang Wu
- Department of Clinical Laboratory of the Second Affiliated Hospital, School of Tropical Medicine, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical UniversityHaikou571199China
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Feng M, Du X, Yin Y, Yan L, Wang H, Yin Q, Li L, Fan M, Lai X, Huang Y, Ren J, Lang J. Early Prediction Model of Radiation-Induced Xerostomia Based on Radiomics during Radiotherapy for Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.420] [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: 10/31/2022]
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Lai X, Yang X, Rao S, Zhu Z, Cong X, Ye J, Zhang W, Liao Y, Cheng S, Xu F. Advances in physiological mechanisms of selenium to improve heavy metal stress tolerance in plants. Plant Biol (Stuttg) 2022; 24:913-919. [PMID: 35583793 DOI: 10.1111/plb.13435] [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] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Selenium (Se) is a metalloid mineral nutrient for human and animal health. Plants are the main foodstuff source of the Se intake of humans. For plants, the addition of an appropriate amount of Se could promotes growth and development, and improves the tolerance to environmental stress, especially stress from some of heavy metals (HM) stress, such as cadmium (Cd) and mercury (Hg). This paper mainly reviews and summarizes the physiological mechanism of Se in enhancing HM stress tolerance in plants. The antagonistic effect of Se on HM is a comprehensive effect that includes many physiological mechanisms. Se can promote the removal of excessive reactive oxygen species and reduce the oxidative damage of plant cells under HM elements stress. Se participates in the regulation of the transportation and distribution of HM ions in plants, and alleviates the damage caused by of HM stress. Moreover, Se combine with HM elements to form Se-HM complexes and promote the production of phytochelatins (PCs), thereby reducing the accumulation of HM ions in plants. Overall, Se plays an important role in plant response to HM stress, but current studies mainly focus on physiological mechanism, and further in-depth study on the molecular mechanism is essential to confirm the participation of Se in plant response to environmental stress. This review helps to comprehensively understand the physiological mechanism of Se in plant tolerance against to HM stress of plants, and provides important theoretical support for the practical application of Se in environmental remediation and agricultural development.
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Affiliation(s)
- X Lai
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - X Yang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - S Rao
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
| | - Z Zhu
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
| | - X Cong
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
- Enshi Se-Run Health Tech Development Co., Ltd, Enshi, China
| | - J Ye
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - W Zhang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - Y Liao
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - S Cheng
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
| | - F Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
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Xia K, Wang F, Lai X, Luo P, Chen H, Ma Y, Huang W, Ou W, Li Y, Feng X, Lei Z, Tu X, Ke Q, Mao F, Deng C, Xiang A. Gene Editing/Gene Therapies: AAV-MEDIATED GENE THERAPY PRODUCES FERTILE OFFSPRING IN THE LHCGR-DEFICIENT MOUSE MODEL OF LEYDIG CELL FAILURE. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00156-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Wang L, Li R, Lai X, Zhang X, Chen H, Zhao W. [Mapping Regulatory Elements within 5' and 3' UTRs of SIGLEC15 with a Use of Reporter System]. Mol Biol (Mosk) 2022; 56:465-467. [PMID: 35621101 DOI: 10.31857/s0026898422030181] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/31/2021] [Indexed: 06/15/2023]
Abstract
Siglec-15 is an immune suppressor with broad upregulation on various cancer types and has emerged as a potential target for cancer immunotherapy. However, it remains unclear how SIGLEC15 expression is controlled in normal or cancer cells. In this work, we utilized reporter assays to evaluate the impact of the 5' UTR and the 3' UTR of SIGLEC15 mRNA on gene expression. We found that the 3' UTR dramatically reduced reporter protein production, whereas the 5' UTR showed modest inhibitory effect. Quantification of steady-state mRNA revealed the good coupling of protein amount and mRNA abundance that was associated with the 3' UTR. In contrast, the 5' UTR had little effect on mRNA abundance compared with the empty control. By measuring mRNA half-life, we showed that the 3' UTR markedly promoted mRNA degradation. Testing shortened 3' UTR fragments demonstrated five out of the six having notable inhibitory effect, with the one spanning 993-1317 had the most robust activity. More interestingly, the 993-1317 region contains a predicted 43-nt stem-loop structure that showed apparent inhibitory activity in four cell lines tested. These results suggested that the 3' UTR inhibited reporter gene expression by accelerating mRNA decay possibly via multiple cis-regulatory elements, but the 5' UTR repressed gene expression by inhibiting translation. Thus, our findings provided a clue to the molecular mechanism underlying the regulation of SIGLEC15 expression.
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Affiliation(s)
- L Wang
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
| | - R Li
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
| | - X Lai
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
| | - X Zhang
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
| | - H Chen
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
| | - W Zhao
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University,Shenzhen, Guangdong, 518107 P.R. China
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14
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Wang L, Li R, Lai X, Zhang X, Chen H, Zhao W. Mapping Regulatory Elements within 5' and 3' UTRs of SIGLEC15 with a Use of Reporter System. Mol Biol 2022. [DOI: 10.1134/s0026893322030141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Feng M, Yan L, Du X, Wang H, Ren J, Wang M, Yin Q, Lai X, Li L, Lan M, Lu S, Huang Y, Li F, Xu X, Wang W, Lang J. 873P Early efficacy prediction of nasopharyngeal carcinoma based on 3D-ADC acquired during radiotherapy: A phase II prospective study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1283] [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: 10/20/2022] Open
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16
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Feng M, Yin Q, Qi Y, Li L, Lan M, Lai X, Fan M, Zhang J, Li F, Wang W, Lang J. PO-0978 Low-dose radiotherapy as a chemosensitizer of neoadjuvant chemotherapy for LA-NPC: a phase II trial. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07429-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Yang SH, Wu H, Yi ZJ, Lai X. The PKM2 activator TEPP-46 attenuates MCD feeding-induced nonalcoholic steatohepatitis by inhibiting the activation of Kupffer cells. Eur Rev Med Pharmacol Sci 2021; 25:4017-4026. [PMID: 34156680 DOI: 10.26355/eurrev_202106_26043] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The present study aimed to investigate the effect and molecular mechanism of the PKM2 small molecule agonist TEPP-46 on the development of methionine choline-deficient (MCD) diet-induced nonalcoholic steatohepatitis (NASH) in mice. MATERIALS AND METHODS In this study, C57BL/6 mice were fed an MCD diet for 15 days to establish a NASH model. The protein expression levels of pyruvate kinase M2 (PKM2), PKM1, hypoxia-inducible factor-1α (HIF-1α) and NLRP3 in liver Kupffer cells (KCs) were measured by Western blotting. Immunofluorescence analysis was used to analyze the nuclear translocation of PKM2 in KCs, and the levels of IL-1β and TNF-α in mouse serum and the cell polarization indexes were determined. The MCD diet-fed mice were injected with 30 mg/kg of TEPP-46 intraperitoneally every 5 days. After 15 days, the liver tissue and peripheral blood were collected for analysis. RESULTS We found the NASH model was successfully established after the mice were fed an MCD diet for 15 days. MCD feeding promoted the expression of the PKM2 monomer/dimer and inhibited the expression of the PKM2 tetramer in KCs. Immunofluorescence analysis further confirmed that MCD feeding inhibited the nuclear translocation of PKM2. Besides, MCD feeding promoted the expression of HIF-1α and NLRP3 in KCs, promoted M1 KCs polarization and inhibited M2 KCs polarization. Intraperitoneal injection 30 mg/kg of TEPP-46 significantly inhibited the development of MCD diet-induced NASH, alleviated the pathological changes in the liver, improved liver function, promoted the expression of the PKM2 tetramer in KCs, and inhibited the expression of HIF-1α and NLRP3. CONCLUSIONS This study demonstrated that TEPP-46, a small molecule agonist of PKM2, may inhibit the nuclear translocation of PKM2 and the activation of KCs by promoting the expression of PKM2 tetramers in KCs, thus inhibiting the development of MCD diet-induced NASH in mice.
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Affiliation(s)
- S-H Yang
- Department of Hepatobiliary Surgery, Fuling Central Hospital, Chongqing, China.
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Lai X, Qi A, Liu Y, Mendoza LEDR, Liu Z, Lin Z, Khan MFR. Evaluating Inoculation Methods to Infect Sugar Beet with Fusarium oxysporum f. betae and F. secorum. Plant Dis 2020; 104:1312-1317. [PMID: 32181721 DOI: 10.1094/pdis-09-19-1895-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Minnesota and North Dakota combined contain 55% of the sugar beet production area in the United States, contributing to 49% of the nation's sugar beet production in 2018. Fusarium diseases caused by Fusarium oxysporum f. betae and F. secorum on sugar beet can cause significant reduction in both root yield and sucrose concentration and purity. The objective of this research was to identify an alternative artificial inoculation method to induce Fusarium diseases on sugar beet leaves and roots caused by both Fusarium spp. in greenhouse conditions to better aid in research efforts. We tested four inoculation methods, including barley to seed, barley to root, drenching, and cutting. and compared them with the conventional root-dipping inoculation method. The inoculation method of placing Fusarium-colonized barley seed close to sugar beet seed (barley to seed) caused levels of symptom severities on both leaves and roots similar to the root-dipping method. Because the traditional root-dipping method involves a laborious transplant process, use of infected barley seed as inoculum may serve as an alternative method in the evaluation of host resistance and pathogen virulence among Fusarium diseases by Fusarium spp. on sugar beet at the seed or seedling stage.
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Affiliation(s)
- X Lai
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108-6050, U.S.A
| | - A Qi
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, AL10 9AB, U.K
| | - Y Liu
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108-6050, U.S.A
| | - L E Del Río Mendoza
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108-6050, U.S.A
| | - Z Liu
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108-6050, U.S.A
| | - Z Lin
- Department of Agricultural and Biosystems Engineering, North Dakota State University, Fargo, ND 58108-6050, U.S.A
| | - M F R Khan
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108-6050, U.S.A
- University of Minnesota, St. Paul, MN, U.S.A
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Zhang C, Zhou Y, Lai X, Zhou G, Wang H, Feng X, Chen Y, Wu Y, Wang T, Ma L. Human Umbilical Cord Mesenchymal Stem Cells Alleviate Myocardial Endothelial-Mesenchymal Transition in a Rat Dilated Cardiomyopathy Model. Transplant Proc 2019; 51:936-941. [PMID: 30979486 DOI: 10.1016/j.transproceed.2019.01.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 07/02/2018] [Revised: 09/20/2018] [Accepted: 01/17/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Human umbilical cord-derived mesenchymal stem cells (HuMSCs) have been shown to suppress cardiac fibrosis; however, the underlying mechanisms are not fully understood. Recent studies have shown that endothelial-mesenchymal transition (EndMT) plays a crucial part in myocardial fibrosis. In the present study, we investigated the suppressive role of HuMSCs in cardiac fibrosis and related mechanisms in a rat dilated cardiomyopathy (DCM) model. METHODS Male Lewis rats were randomly divided into 3 groups. Rats without any treatment served as a negative control group, while the DCM rats, which were generated by immunization with porcine myosin, were divided into 2 groups: a HuMSC group, in which HuMSCs (1 × 106 cells/rat) were injected intravenously, and a vehicle group, in which rats were injected with volume-matched solution containing no HuMSCs. Histologic and immunofluorescent measurements were used to evaluate the effects of HuMSCs on cardiac fibrosis and EndMT. RESULTS We observed a significant increase in myocardial fibrosis, and elevated EndMT in rats of the vehicle group were observed compared with those in the negative control group along with the increased activity of transforming growth factor (TGF)-β1/extracellular signal-regulated kinase (ERK) 1/2 signaling. Treatment with HuMSCs repressed the increase in myocardial fibrosis and EndMT observed in DCM rats, which correlated with decreased activity of TGF-β1/ERK1/2 signaling. CONCLUSION The HuMSCs attenuated cardiac fibrosis at least partly through the inhibition of TGF-β/ERK-induced EndMT.
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Affiliation(s)
- C Zhang
- Department of Cardiology, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Y Zhou
- Department of Neurology, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - X Lai
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - G Zhou
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Department of Paediatrics, Children's Hospital of Shenzhen, Guangdong, China
| | - H Wang
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - X Feng
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Y Chen
- Department of Cardiology, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Y Wu
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - T Wang
- Department of Pediatrics, Beijing Children's Hospital, Capital Medical Hospital, Beijing, China.
| | - L Ma
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Department of Paediatrics, Children's Hospital of Shenzhen, Guangdong, China; Department of Pediatrics, Maternal and Child Health Care Hospital of Pingshan District, Shenzhen, Guangdong, China.
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Lang J, Li L, Huang J, Feng M, Qi Y, Lai X. Targeting Inhibition of EGFR Nuclear Nuclear Transport Sensitizes Cervical Cancer Cells to Ionizing Radiation. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Zhou TC, Li X, Chen LJ, Fan JH, Lai X, Tang Y, Zhang L, Wei J. Differential expression profile of hepatic circular RNAs in chronic hepatitis B. J Viral Hepat 2018; 25:1341-1351. [PMID: 29888838 DOI: 10.1111/jvh.12944] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 03/19/2018] [Accepted: 05/14/2018] [Indexed: 12/16/2022]
Abstract
CircRNAs exert gene regulatory effects by sequestering target microRNAs (miRNAs) and play a vital role in the onset and development of disease. Until recently, little has been known about the expression, regulation and biological function of circRNAs in both health and chronic hepatitis B (CHB).To identify hepatic circRNAs associated with CHB, we performed RNA sequencing using liver biopsies from untreated CHB patients and controls. We then established a bioinformatics pipeline for identification of CHB-associated circRNAs and in silico analysis of the circRNA-miRNA-mRNA pathways. We used quantitative reverse transcription polymerase chain reaction (qRT-PCR) to confirm these results. The profiles of hepatic circRNA expression were significantly different in CHB compared with controls, with a total of 99 dysregulated circRNAs identified to be correlated with CHB. Computational analysis of the circRNA-miRNA-mRNA pathways revealed a large number of miRNAs (665), which were putatively targeted by the differentially expressed hepatic circRNAs. Interestingly, four of the predicted CHB-related circRNA-miRNA-mRNA pathways were found to be involved in the pathogenesis of HBV infection and progression of HBV-associated liver disease. Among these pathways, regression analysis of gene expression revealed a strong positive correlation between hsa_circ_0000650 and TGFβ2 and a negative correlation between hsa_circ_0000650 and miR-6873-3p, which hinted that hsa_circ_0000650 interacted with TGFβ2 mediated by miR-6873-3p. This study firstly demonstrates that patients with CHB present different profiles of hepatic circRNAs and circRNA/miRNA interactions. Thus, circRNAs have promise as novel mechanisms underlying the pathogenesis and progression of CHB.
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Affiliation(s)
- T-C Zhou
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
| | - X Li
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
| | - L-J Chen
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
| | - J-H Fan
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China.,The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - X Lai
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
| | - Y Tang
- The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - L Zhang
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
| | - J Wei
- Central lab, Liver disease research center, the Second People's Hospital of Yunnan Province, Kunming, China
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22
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Zhou TC, Lai X, Feng MH, Tang Y, Zhang L, Wei J. Systematic review and meta-analysis: Development of hepatocellular carcinoma in chronic hepatitis B patients with hepatitis e antigen seroconversion. J Viral Hepat 2018; 25:1172-1179. [PMID: 29741285 DOI: 10.1111/jvh.12928] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 02/06/2018] [Accepted: 04/10/2018] [Indexed: 12/27/2022]
Abstract
Hepatitis B e antigen (HBeAg) seroconversion is considered to have significantly favourable clinical outcomes for patients with chronic hepatitis B (CHB). However, inconsistent study results suggest that hepatocellular carcinoma (HCC) still occurs in patients with HBeAg seroconversion. We performed a systematic review and meta-analysis to determine the incidence of HCC in patients with CHB after HBeAg seroconversion. Web of Science, PubMed and Embase databases were searched through January 2017. The incidence of HCC in CHB patients after HBeAg seroconversion was pooled using a random-effects model or fix-effects model. Sixteen studies were finally included, involving 4910 patients with HBeAg seroconversion. The overall pooled proportion suggested that 3.33% (95% confidence interval (CI): 2.28%-4.58%) of patients with CHB develop HCC despite HBeAg seroconversion. In patients with HBeAg seroconversion without cirrhosis, the pooled proportion of HCC development was 0.94% (95% CI: 0.15%-2.4%). Moreover, patients with cirrhosis, active hepatitis, or aged greater than 40 years at the time of HBeAg seroconversion were at significantly higher risk for HCC development. HBeAg seroconversion was significantly associated with a reduced risk of HCC compared with persistently positive HBeAg (RR = 0.58, 95% CI: 0.35-0.97, P = .04). Despite the reduced risk with HBeAg seroconversion, HCC can still occur in a proportion of patients with CHB after HBeAg seroconversion. Long-term monitoring is needed for patients with established cirrhosis, active hepatitis or those older than 40 years at the time of HBeAg seroconversion.
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Affiliation(s)
- T-C Zhou
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province (The Fourth Affiliated Hospital of Kunming Medical University), Kunming, China
| | - X Lai
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province (The Fourth Affiliated Hospital of Kunming Medical University), Kunming, China
| | - M-H Feng
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province (The Fourth Affiliated Hospital of Kunming Medical University), Kunming, China
| | - Y Tang
- The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - L Zhang
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province (The Fourth Affiliated Hospital of Kunming Medical University), Kunming, China
| | - J Wei
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province (The Fourth Affiliated Hospital of Kunming Medical University), Kunming, China
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Abstract
Myocardial perfusion imaging (MPI) using rest/stress single photon emission computed tomography (SPECT) allows non-invasive assessment of reversible cardiac perfusion defects. Conventionally, reversible defects are identified using a difference image, called reversible map, obtained by subtracting the stress image from the rest image after registration and normalization of the two images. The identification of reversible defects using the conventional subtraction method is however limited by noise. We propose to jointly reconstruct rest and stress projection data to directly obtain the reversible map in a single reconstruction framework to improve the detectability of reversible defects. To evaluate the performance of the proposed method, we performed phantom studies to mimic reversible defects with different levels of severity and doses. As compared to the conventional subtraction method, the joint method yielded reversible maps with much lower noise and improved defect detectability. At a normal clinical dose level, the joint method improved the signal to noise ratio (SNR) of defect contrast in reversible maps from 13.2 to 66.4, 9.7 to 35.0, 6.1 to 13.2, and 3.1 to 6.5, for defect to normal myocardium concentration ratios of 0%, 25%, 50%, and 75%, respectively. The SNRs obtained using the joint method were improved from 6.1 to 13.2, 3.9 to 9.4, 3.0 to 8.0, and 2.1 to 7.1, for 100%, 75%, 50%, and 25% of the normal clinical dose as compared to the conventional subtraction method. To access clinical feasibility, we applied the joint method to a rest/stress SPECT MPI patient study. The joint method yielded a reversible map with much lower noise, translating into a much higher defect detectability as compared to the conventional subtraction method. Our results indicate that the joint method has the potential to improve radiologists' performance for assessing defects in rest/stress SPECT MPI. In addition, the joint method can be used to reduce dose or imaging time.
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Affiliation(s)
- X Lai
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, United States of America. Department of Radiology, Harvard Medical School, Boston, MA 02115, United States of America
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24
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Guo Y, Zhang J, Lai X, Chen M, Guo Y. Tim-3 exacerbates kidney ischaemia/reperfusion injury through the TLR-4/NF-κB signalling pathway and an NLR-C4 inflammasome activation. Clin Exp Immunol 2018; 193:113-129. [PMID: 29570768 DOI: 10.1111/cei.13126] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2018] [Indexed: 12/21/2022] Open
Abstract
T cell immunoglobulin domain and mucin domain-containing molecule-3 (Tim-3), a member of the immunoglobulin superfamily, has been shown to play a crucial role in host adaptive immunity and tolerance. However, its role in kidney ischaemia-reperfusion injury (IRI) remains unknown. In this study, we investigated the role and mechanism of Tim-3 signalling after kidney IRI. In an established murine model of kidney IRI, we found that Tim-3 expression is enhanced on monocytes/macrophages. Anti-Tim-3 antibody RMT3-23 ameliorates biochemical and histological kidney injury, reduces apoptosis and decreases macrophage infiltration and cytokine production in ischaemic kidneys. Cell culture experiments also demonstrated that the role of Tim-3 in IRI-induced macrophage activation leads to the secretion of proinflammatory cytokines and chemokines. In addition, Toll-like receptor (TLR)-4 and Nod-like receptor (NLR) family CARD domain-containing protein 4 (NLR-C4) expression were enhanced after kidney IRI and decreased significantly by RMT3-23. Tim-3 not only promotes TLR-mediated nuclear factor kappa B (NF-κB) activation and cytokine and chemokine release, but also participates in NLR-C4 inflammasome activation. Taken together, our data confirm that Tim-3 signalling enhances injury after kidney IRI and demonstrated that Tim-3 is involved in regulating TLR-4/NF-κB signalling and NLR-C4 inflammasome activation, which provide evidence that Tim-3 signalling is critical for kidney IRI and may provide a new means to ameliorate kidney tissue immune responses in the clinics.
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Affiliation(s)
- Y Guo
- Department of Nephrology, Shandong Provincial Third Hospital, Ji'nan, China
| | - J Zhang
- Department of Interventional Radiology and Vascular Anomalies, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - X Lai
- Transplantation Department, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - M Chen
- Department of Interventional Radiology and Vascular Anomalies, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Y Guo
- Department of Nephrology, Shandong Provincial Third Hospital, Ji'nan, China
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25
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Schulz C, Lai X, Bertrams W, Jung AL, Sittka-Stark A, Herkt C, Janga H, Zscheppang K, Stielow C, Schulte L, Hippenstiel S, Vera J, Schmeck B. Makrophagen induzieren eine epitheliale Hyporesponsivität gegen Legionella pneumophila – eine systembiologische Studie. Pneumologie 2018. [DOI: 10.1055/s-0037-1619301] [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: 10/28/2022]
Affiliation(s)
- C Schulz
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - X Lai
- Laboratory of Systems Tumor Immunology, Dermatologie, Universität Erlangen-Nürnberg
| | - W Bertrams
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - AL Jung
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - A Sittka-Stark
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - C Herkt
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - H Janga
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - K Zscheppang
- Medizinische Klinik mit Schwerpunkt Infektiologie und Pneumologie, Charité Universitätsmedizin Berlin
| | - C Stielow
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - L Schulte
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
| | - S Hippenstiel
- Medizinische Klinik mit Schwerpunkt Infektiologie und Pneumologie, Charité Universitätsmedizin Berlin
| | - J Vera
- Laboratory of Systems Tumor Immunology, Dermatologie, Universität Erlangen-Nürnberg
| | - B Schmeck
- Institut für Lungenforschung, Universities of Gießen and Marburg Lung Center, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL); Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Philipps-Universität Marburg, Deutsches Zentrum für Lungenforschung (DZL)
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26
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Luoh SW, Wagoner W, Lai X, Hu Z, Chin K, Ramsey B. Abstract P2-08-03: An essential role of GRB7 in promoting the growth of therapy resistant HER-2 positive human breast cancer cells in culture and animal models. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p2-08-03] [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] [Indexed: 11/16/2022]
Abstract
Abstract
Background- GRB7 gene encodes a multi-domain signal transduction molecule and is part of the core of the HER-2 amplicon. GRB7 is commonly co-amplified and over-expressed with HER-2 in human breast cancer. Earlier studies found a functional role of GRB7 in breast cancer. The role of GRB7 in HER-2 positive human breast cancer resistant to HER-2 targeted therapy remains unexplored however.
Materials and Methods- HCC-1954, 21MT1 and JimT1 are human HER-2 positive breast cancer cell lines that are resistant to trastuzumab and lapatinib treatment. Transient knock down of GRB7 protein expression was achieved with siRNA transfection and stable knock down with lentiviral vector mediated shRNA over-expression. Cell lines transfected with non-targeting siRNA or shRNA serve as negative controls. Knock down of GRB7 protein expression is verified by Western blotting. The growth of human breast cancer cell lines after GRB7 knock down in vitro is measured with the CellTiter Glo assay as well as the Incucyte live cell imaging. Activation status of specific signaling pathways was examined with phospho-specific antibody by immune-blotting and immune-precipitation. To assess the growth promoting function of GRB7 in human breast cancer cell lines in vivo, polyclonal HCC-1954, 21MT1 and JimT1 cells, with GRB7 knock down or their corresponding negative control, were orthotopically injected into the mammary fat pads of female immune-deficient NSG mice. The growth rates of these tumors, measured serially with caliper, and final tumor weights were compared between GRB7 knock down and the negative control. The proliferation rate and apoptosis of these tumors were studied with ki-67 staining and Tunel assay.The effects of GRB7 knock down on signaling were investigated with a proteome profiler receptor tyrosine kinase kit (R&D). The role of signaling molecules differentially activated in the growth of breast cancer cells by GRB7 knock down was examined utilizing siRNA mediated knock down, and antibody and small molecule inhibitors.
Results- GRB7 knock down decreased the growth of HCC-1954, 21MT1 and JimT1 cells in vitro and the growth of tumor xenograft these cells formed in animal models. When assayed by ki67 staining and Tunel assay, the mechanism of reduced tumor xenograft growth appeared to be distinct. Reduced proliferation and increased apoptosis were seen in 21MT1 cells, while reduced proliferation was seen in HCC-1954 cells and increased apoptosis in JimT1 cells. Protein profiling found that tyrosine phosphorylation of candidate signaling molecules was reduced with GRB7 knock down in JimT1 cells. Immuno-blotting and immuno-precipitation experiments were performed to evaluate these effects in other cell lines. The effect of targeting these molecules in breast cancer cell growth by siRNA and inhibitors is being examined.
Discussion- GRB7 has essential growth promoting function in therapy resistant HER-2 positive human breast cancer cells. GRB7 knock down has pleiotropic effects on signaling in various cellular contexts. The potential of targeting GRB7 signaling in treating therapy resistant HER-2 positive breast cancer merits further study.
Citation Format: Luoh S-W, Wagoner W, Lai X, Hu Z, Chin K, Ramsey B. An essential role of GRB7 in promoting the growth of therapy resistant HER-2 positive human breast cancer cells in culture and animal models [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P2-08-03.
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Affiliation(s)
- S-W Luoh
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
| | - W Wagoner
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
| | - X Lai
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
| | - Z Hu
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
| | - K Chin
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
| | - B Ramsey
- Oregon Health Sciences University, Portland, OR; VA Portland Health Care System, Portland, OR
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27
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Li W, Huang L, Zeng J, Lin W, Li K, Sun J, Huang W, Chen J, Wang G, Ke Q, Duan J, Lai X, Chen R, Liu M, Liu Y, Wang T, Yang X, Chen Y, Xia H, Xiang AP. Characterization and transplantation of enteric neural crest cells from human induced pluripotent stem cells. Mol Psychiatry 2018; 23:499-508. [PMID: 27777423 PMCID: PMC5822467 DOI: 10.1038/mp.2016.191] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 08/07/2015] [Accepted: 09/14/2016] [Indexed: 12/30/2022]
Abstract
The enteric nervous system (ENS) is recognized as a second brain because of its complexity and its largely autonomic control of bowel function. Recent progress in studying the interactions between the ENS and the central nervous system (CNS) has implicated alterations of the gut/brain axis as a possible mechanism in the pathophysiology of autism spectrum disorders (ASDs), Parkinson's disease (PD) and other human CNS disorders, whereas the underlying mechanisms are largely unknown because of the lack of good model systems. Human induced pluripotent stem cells (hiPSCs) have the ability to proliferate indefinitely and differentiate into cells of all three germ layers, thus making iPSCs an ideal source of cells for disease modelling and cell therapy. Here, hiPSCs were induced to differentiate into neural crest stem cells (NCSCs) efficiently. When co-cultured with smooth muscle layers of ganglionic gut tissue, the NCSCs differentiated into different subtypes of mature enteric-like neurons expressing nitric oxide synthase (nNOS), vasoactive intestinal polypeptide (VIP), choline acetyltransferase (ChAT) or calretinin with typical electrophysiological characteristics of functional neurons. Furthermore, when they were transplanted into aneural or aganglionic chick, mouse or human gut tissues in ovo, in vitro or in vivo, hiPSC-derived NCSCs showed extensive migration and neural differentiation capacity, generating neurons and glial cells that expressed phenotypic markers characteristic of the enteric nervous system. Our results indicate that enteric NCSCs derived from hiPSCs supply a powerful tool for studying the pathogenesis of gastrointestinal disorders and brain/gut dysfunction and represent a potentially ideal cell source for enteric neural transplantation treatments.
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Affiliation(s)
- W Li
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, China,Guangdong Key Laboratory of Reproductive Medicine, Guangzhou, Guangdong, China
| | - L Huang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - J Zeng
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Department of Pediatric Surgery, Guangzhou Women and Children's Medical Centre, Guangzhou, China
| | - W Lin
- Department of Blood Transfusion, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - K Li
- Department of Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - J Sun
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - W Huang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - J Chen
- Department of Histology and Embryology, School of Medicine, Jinan University, Guangzhou, China
| | - G Wang
- Department of Histology and Embryology, School of Medicine, Jinan University, Guangzhou, China
| | - Q Ke
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China,Department of Cell Biology, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, China
| | - J Duan
- Center for Neurobiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - X Lai
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - R Chen
- Center for Reproductive Medicine, Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - M Liu
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Y Liu
- Shenzhen Beike Cell Engineering Research Institute, Shenzhen, China
| | - T Wang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, China
| | - X Yang
- Department of Histology and Embryology, School of Medicine, Jinan University, Guangzhou, China
| | - Y Chen
- Center for Neurobiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - H Xia
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Department of Pediatric Surgery, Guangzhou Women and Children's Medical Centre, Guangzhou, China,Guangzhou Women and Children's Medical Centre, No. 9, Jinsui Road, Guangzhou, Guangdong 510623, China
| | - A P Xiang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, China,Guangdong Key Laboratory of Reproductive Medicine, Guangzhou, Guangdong, China,Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, No. 74, Zhongshan 2nd Road, Guangzhou, Guangdong 510080, China. E-mail: or
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28
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Zhang X, Han Y, Song L, Huo L, Lai X, Zhang Y, Zhang J, Hua Z. A protective role for FADD dominant negative (FADD-DN) mutant in trinitrochlorobenzene (TNCB)-induced murine contact hypersensitivity reactions. Clin Exp Dermatol 2017; 43:380-388. [PMID: 29277981 DOI: 10.1111/ced.13303] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND Fas-associated protein with death domain (FADD) is a classic adaptor protein in apoptosis. Increasing evidence has shown that FADD is also implicated in T-cell development, activation and proliferation. The role of FADD in inflammatory disorders remains largely unexplored. AIM To assess the role of FADD in inflammatory disorders. METHODS We established an experimental model of contact hypersensitivity (CHS) by using 2,4,6-trinitrochlorobenzene (TNCB) on transgenic mice expressing a dominant negative mutant of FADD (FADD-DN), RESULTS: CHS responses were clearly attenuated in FADD-DN mice compared with control mice. In the retroauricular lymph nodes, the ratio of CD8+ T cells was also decreased. CONCLUSION FADD-DN appears to play a protective role in TNCB-induced CHS reactions.
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Affiliation(s)
- X Zhang
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.,Changzhou High-Tech Research Institute of Nanjing Universityand Jiangsu TargetPharma Laboratories Inc., Changzhou, China
| | - Y Han
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - L Song
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - L Huo
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - X Lai
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Y Zhang
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - J Zhang
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Z Hua
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.,Changzhou High-Tech Research Institute of Nanjing Universityand Jiangsu TargetPharma Laboratories Inc., Changzhou, China.,Shenzhen Research Institute of Nanjing University, Shenzhen, China
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29
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Zhu J, Guo M, Yang T, Lai X, Lei YY, He ML, Chen J, Li TY. [Association between behavioral problems and gastrointestinal disorders among children with autism spectrum disorder]. Zhonghua Er Ke Za Zhi 2017; 55:905-910. [PMID: 29262469 DOI: 10.3760/cma.j.issn.0578-1310.2017.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship between gastrointestinal disorders (GID) and core symptoms or behavioral problems among the children with autism spectrum disorder (ASD) . Method: Totally 328 children with ASD and 202 normal controls were enrolled in this cross-sectional study from August 2013 to October 2016. The information about the gastrointestinal disorders, behavioral and emotional problems was collected by using questionnaires. Childhood Autism Rating Scale (CARS), Autism Behavior Checklist (ABC) were used to assess the core symptoms of the children with ASD. Neurodevelopmental status was evaluated with Gesell Developmental Scale (GDS). These variables were analyzed by using student's t-test and chi-square test. Result: The prevalence of GID was significantly higher in the children with ASD than in the normally developing children (49.4% (162/328) vs.25.7% (52/202), χ(2)=29.039, P=0.000), especially the symptoms of constipation (33.2% (109/328) vs. 13.9% (28/202)), diarrhea (9.5%(31/328) vs. 1.5% (3/202)), nausea and vomiting (9.5% (31/328) vs. 3.5% (7/202)), and foul defecation (16.5% (54/328) vs. 5.0% (10/202)) (all P<0.05). Among the ASD children, the prevalence of GID was similar between male and female (46.7% (133/285) vs. 46.5%(20/43), χ(2)=0.006, P=0.938), as well as among all age groups (χ(2)=1.907, P=0.862). There was no significant difference in scores of GDS in the ASD children with or without GID (all P>0.05). Compared with ASD children without GID (n=166), the ASD children with GID (n=162) got higher scores in the "Body and Object Use" of ABC scale ( (16.4±9.3) vs. (12.3±6.7) scores, t=2.258, P=0.028), and had more emotional problems (63.6% (103/162) vs. 49.4% (82/166), χ(2)=6.707, P=0.010). Moreover, the score of behavior problems questionnaire was higher in the ASD children with GID ( (35.3±16.8) vs. (16.1±13.6) scores, t=5.748, P=0.000). Conclusion: Children with ASD have higher risk of GID than the normal developing children. While the stereotyped behaviors, problem behaviors and emotional problems are severer in the ASD children with GID. Hence, it is important to provide comprehensive treatment and management for these groups of children.
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Affiliation(s)
- J Zhu
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
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Ma D, Yang D, Lai X, Xu F. The therapy of apatinib in the third line of colorectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Ismaya WT, Efthyani A, Retnoningrum DS, Lai X, Dijkstra BW, Tjandrawinata RR, Rachmawati H. Study of response of Swiss Webster mice to light subunit of mushroom tyrosinase. Biotech Histochem 2017; 92:411-416. [PMID: 28800260 DOI: 10.1080/10520295.2017.1339912] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
The light subunit of mushroom, Agaricus bisporus, tyrosinase (LSMT), has been identified as an extrinsic component of the enzyme. Its function is unknown, but it can cross an epithelial cell layer, which suggests that it can be absorbed by the intestine. A similar capability has been demonstrated for the HA-33 component of the progenitor toxin from Clostridium botulinum, which is the closest structural homolog of LSMT. Unlike HA-33, LSMT appears to be non-immunogenic as shown by preliminary tests in Swiss Webster mice. We investigated the immunogenicity and histopathology of LSMT in mice to determine its safety in vivo. LSMT did not evoke generation of antibodies after prolonged periods of intraperitoneal administration. Histopathological observations confirmed the absence of responses in organs after twelve weekly administrations of LSMT. We found that LSMT is not toxic and is less immunogenic than the C. botulinum HA-33 protein, which supports further research and development for pharmaceutical application.
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Affiliation(s)
- W T Ismaya
- a Dexa Laboratories of Biomolecular Sciences , JABABEKA II Industrial Estate , Cikarang
| | - A Efthyani
- b Research group of Pharmaceutics, School of Pharmacy , Bandung Institute of Technology , Bandung
| | - D S Retnoningrum
- c Research group of Biotechnology, School of Pharmacy , Bandung Institute of Technology , Bandung , Indonesia
| | - X Lai
- d European Synchrotron Radiation Facility , Grenoble , France
| | - B W Dijkstra
- e Laboratory of Biophysical Chemistry , University of Groningen , Groningen , The Netherlands
| | - R R Tjandrawinata
- a Dexa Laboratories of Biomolecular Sciences , JABABEKA II Industrial Estate , Cikarang
| | - H Rachmawati
- b Research group of Pharmaceutics, School of Pharmacy , Bandung Institute of Technology , Bandung.,f Research Center for Nanosciences and Nanotechnology , Bandung Institute of Technology , Bandung , Indonesia
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Zhou T, Yang Y, Zhang L, Liu Y, Lai X, Li Y, Li X, Xiong Y, Yang L, Irwin D. NOVEL GENETIC FINDINGS IN A CHINESE FAMILY WITH EARLY-ONSET FEMALE-RELATED TYPE 2 DIABETES. Acta Endocrinol (Buchar) 2017; 13:364-369. [PMID: 31149201 PMCID: PMC6516578 DOI: 10.4183/aeb.2017.364] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
No inheritance of early-onset female-related type 2 diabetes was reported within Chinese families. In this study, we aim to describe the inheritance pattern of type 2 diabetes in a 3-generation family and identify the gene responsible for type 2 diabetes. Genome-wide multipoint parametric linkage analysis revealed a maximum multipoint logarithm of odds (lod) score of 2.1 for a locus being associated with type 2 diabetes in this family on chromosome 20p11.2-12 between 23.5~30.8cM. Type 2 diabetes may be transmitted as an autosomal dominant trait with a high female-related penetrance in this family. Here we describe the first genetic locus for type 2 diabetes at chromosome 20p11.2-12. This region contains 8 known or predicted genes (PLCB1, PLCB4, LAMP5, PAK7, ANKEF1, SNAP25, SLX4IP, and JAG1). Gene SNAP25 which linked to energy or glucose homeostasis associated phenotypes may play a role in the development of type 2 diabetes in this family.
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Affiliation(s)
- T.C. Zhou
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, China
| | - Y. Yang
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, China
| | - L. Zhang
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - Y.Y. Liu
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - X. Lai
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - Y. Li
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - X. Li
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - Y.X. Xiong
- Central Laboratory, Department of Endocrinology, Second People’s Hospital of Yunnan Province, China
| | - L. Yang
- The second affiliated hosptial of Kunming Medicial Unversity, Nuclear medicine, Kunming, Yunnan Province, China
| | - D.M. Irwin
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, China
- University of Toronto, Department of Laboratory Medicine and Pathobiology, Toronto, Canada
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Lang J, Lai X, Gao Y, Feng M, Luo Y, Zhang J, Fan Z, Xu P. Preliminary Results of Metastatic Non-Small Cell Lung Carcinoma Treated With a Novel Hypointensity Modulated Radiation Therapy Modality. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1749] [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: 12/01/2022]
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Schulz C, Lai X, Jung AL, Sittka-Stark A, Herkt C, Bertrams W, Vera J, Schmeck B. Macrophages render alveolar epithelial cells hypo-responsive to Legionella pneumophila. Pneumologie 2016. [DOI: 10.1055/s-0036-1584613] [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: 10/19/2022]
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Hu Q, Li G, Yao H, He S, Li H, Liu S, Wu Y, Lai X. Edible bird's nest enhances antioxidant capacity and increases lifespan in Drosophila Melanogaster. Cell Mol Biol (Noisy-le-grand) 2016; 62:116-122. [PMID: 27188745] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/20/2016] [Indexed: 06/05/2023]
Abstract
In this study, we aims to investigate the effects of edible bird's nest (EBN) on anti-aging efficacy. In order to investigate lifespan and mortality rate of flies, we treated flies with various doses of EBN. Besides, fecundity, water content and food are determined and heat-stress test is conducted after flies treating with different medium. Effects of EBN on total antioxidant activity (T-AOC), super-oxide dismutase activity (SOD), catalase activity (CAT), and malondialdehyde (MDA) were examined in drosophila melanogaster. Results indicated that flies in EBN treated group illustrated significantly lower mortality rates and longer median and maximum lifespan compared to control group (P<0.05). The fecundity in EBN-treated group was increased compared to control group. SOD levels and CAT activity were significantly increased, and MDA levels decreased in EBN-treated group compared to control group (P<0.01). In conclusion, EBN can extend lifespan, decrease mortality rate and increase survival rate in heat-stress test, and which can also promote SOD and CAT activity and reduce MDA levels. EBN is able to delay drosophila melanogaster aging, attributing to the increasing antioxidant enzyme activities and decreasing content of lipid peroxidation products in drosophila melanogaster.
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Affiliation(s)
- Q Hu
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - G Li
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - H Yao
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - S He
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - H Li
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - S Liu
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - Y Wu
- Guangzhou University of Chinese Medicine School of Chinese Herbal Medicine Guangzhou China
| | - X Lai
- Guangzhou University of Chinese Medicine Dongguan Mathematical Engineering Academy of Chinese Medicine Dongguan China
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Turner TD, Corzo DMC, Toroz D, Curtis A, Dos Santos MM, Hammond RB, Lai X, Roberts KJ. The influence of solution environment on the nucleation kinetics and crystallisability of para-aminobenzoic acid. Phys Chem Chem Phys 2016; 18:27507-27520. [DOI: 10.1039/c6cp04320h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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
The influence of solvent on the solution thermodynamics, nucleation-kinetics and crystal growth of alpha para-aminobenzoic acid (PABA) crystallising from supersaturated solutions, is examined through analysis of the metastable zone width.
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Affiliation(s)
- T. D. Turner
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - D. M. C. Corzo
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - D. Toroz
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - A. Curtis
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - M. M. Dos Santos
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - R. B. Hammond
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - X. Lai
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
| | - K. J. Roberts
- Institute for Process Research and Development
- School of Chemical and Process Engineering
- University of Leeds
- Woodhouse Lane
- Leeds
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Toroz D, Rosbottom I, Turner TD, Corzo DMC, Hammond RB, Lai X, Roberts KJ. Towards an understanding of the nucleation of alpha-para amino benzoic acid from ethanolic solutions: a multi-scale approach. Faraday Discuss 2015; 179:79-114. [PMID: 25920721 DOI: 10.1039/c4fd00275j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The molecular assembly and subsequent nucleation of para-amino benzoic acid (PABA) from ethanolic solutions is probed using a multi-scale and multi-technique approach. This is applied by examining and interrelating information regarding the molecular, solution-state, cluster, solid-state and surface structures to understand why the alpha form of PABA is crystallised in preference to its low temperature beta form. Calculations suggest that conformational changes within the solute molecule play little or no role in directing the nucleation of either the alpha or beta crystal forms. Combined ab initio and molecular dynamics calculations of the stability of small clusters in solution suggests that the hydrogen-bonded carboxylic acid dimers, present in the alpha structure, are the most stable in solution and play a major role in the self-assembly and polymorphic expression of the alpha form in ethanol in preference to the beta form. These calculations are in good agreement with X-ray small-angle scattering analysis which reveals the presence of PABA clusters in ethanol which are consistent with the size and shape of a carboxylic acid dimer. SAXS studies also reveal the presence of larger cluster structures in a size range 10-40 nm which appear to grow, perhaps reflecting a change in the balance between monomers and dimers within the solution during the nucleation process. The results of crystallisation-kinetics experiments indicate an instantaneous nucleation mechanism where the number of instantaneously nucleated crystallites is calculated to be 1360-660 nuclei per ml and the subsequent growth is found to be only rate limited by diffusion of the growth unit to the crystallite surface. A linear dependence of growth rate with respect to supersaturation is observed for the (0 1 -1) capping face, which is associated with strong π-π stacking interactions. This is consistent with a solid-on-solid mechanism associated with surface roughened growth and concomitant poor lattice-perfection. Conversely, the side (1 0 -1) surface has a growth mechanism consistent with a 2D nucleation birth and spread mechanism. Hence, these mechanisms result in very fast growth along the b-axis and the needle-like morphology that is observed for alpha-PABA.
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Affiliation(s)
- D Toroz
- Institute of Particle Science and Engineering and Institute of Process, Research and Development, School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
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He WY, Chen GJ, Lai X, Wu F, Tang CS, Zhang AH. Expression levels of urotensin II are associated with endoplasmic reticulum stress in patients with severe preeclampsia. J Hum Hypertens 2015; 30:129-35. [DOI: 10.1038/jhh.2015.28] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/20/2015] [Accepted: 02/26/2015] [Indexed: 02/06/2023]
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Fei C, Yao X, Sun Y, Gu X, Yu L, Lai X. Interleukin-10 polymorphisms associated with susceptibility to acute myeloid leukemia. Genet Mol Res 2015; 14:925-30. [DOI: 10.4238/2015.february.2.15] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lai Z, Liao H, Ip S, Yi Y, Shi S, Su J, Lai X, Su Z, Lin Z. Liquid Chromatography – Mass Spectrometry Method for the Simultaneous Determination and Confirmation of Seven Active Components in Chinese Medicine Kumu Injection. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i1.20] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Schulz C, Lai X, Seifert F, Wolkenhauer O, Vera J, Schmeck B, Sittka A. The role of microRNA regulation in the early inflammatory response: miR-146a and NF-κB signaling in lung inflammation. Pneumologie 2014. [DOI: 10.1055/s-0033-1363108] [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: 10/25/2022]
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Xiao J, Qiu P, Lai X, He P, Wu Y, Du B, Tan Y. Cyclin-dependent kinase 1 inhibitor RO3306 promotes mitotic slippage in paclitaxel-treated HepG2 cells. Neoplasma 2014. [DOI: 10.4149/neo_2014_007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Xiao J, Qiu P, Lai X, He P, Wu Y, Du B, Tan Y. Cyclin-dependent kinase 1 inhibitor RO3306 promotes mitotic slippage in paclitaxel-treated HepG2 cells. Neoplasma 2014; 61:41-47. [PMID: 24195507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most common primary liver neoplasm and current systemic chemotherapy are mostly ineffective. Paclitaxel (PTX) has a clinically significant effect on many malignant tumors. Cells treated with PTX undergo reversible mitotic arrest and although high doses can cause side effects it may also induce apoptosis. We investigated the effect of a sequential combination of PTX and RO3306, a cyclin-dependent kinase 1 inhibitor, on the hepatocellular carcinoma HepG2 cell line. The sequential drug treatment protocol involved the addition of PTX (0.2 µmol/L) for 18 h followed by RO3306 (2 µmol/L) for a further 6 h. Cell viability and proliferation were measured using tetrazolium dye (MTT) and colony formation assay. Cell cycle profiles were established by flow cytometry. The expression level of protein was examined by immunoblotting. We observed a synergistic effect of PTX and RO3306 treatment on cell growth and proliferation as well as an increased proportion of cells in sub-G1 phase. Expression levels of cyclin B, cyclin E and phosphorylated Histone H3 demonstrated that RO3306 enhanced apoptosis in PTX treated cells by mitotic slippage. Our data suggested that the combination of PTX and RO3306 may be an effective therapeutic combination for the treatment of liver cancer.
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Yayar O, Buyukbakkal M, Eser B, Yildirim T, Ercan Z, Erdogan B, Kali A, Merhametsiz O, Haspulat A, Akdag I, Ayli MD, Quach T, Tregaskis P, Menahem S, Koukounaras J, Mott N, Walker R, Zeiler M, Santarelli S, Degano G, Monteburini T, Agostinelli RM, Marinelli R, Ceraudo E, Grzelak T, Kramkowska M, Walczak M, Czyzewska K, Guney I, Turkmen K, Yazici R, Arslan S, Altintepe L, Yeksan M, Vaduva C, Popa S, Mota M, Mota E, Wan Md Adnan WAH, Zaharan NL, Moreiras-Plaza M, Blanco-Garcia R, Beato-Coo L, Cossio-Aranibar C, Martin-Baez I, Santos MT, Fonseca I, Santos O, Aguiar P, Rocha MJ, Carvalho MJ, Cabrita A, Rodrigues A, Guo Z, Lai X, Theodoridis M, Panagoutsos S, Thodis E, Karanikas M, Mitrakas A, Kriki P, Kantartzi K, Passadakis P, Vargemezis V, Vakilzadeh N, Pruijm M, Burnier M, Halabi G, Azevedo P, Santos O, Carvalho M, Cabrita A, Rodrigues A, Laplante S, Rutherford P, Shutov E, Isachkina A, Gorelova E, Troya MI, Teixido J, Pedreira G, Del Rio M, Romero R, Bonet J, Zhang X, Ma J, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Eloot S, Vanholder R, Van Biesen W, Heaf J, Pedersen C, Elgborn A, Arabaci T, Emrem G, Keles M, Kizildag A, Martino F, Amici G, Rodighiero MP, Crepaldi C, Ronco C, Tanaka H, Tsuneyoshi S, Yamasaki K, Daijo Y, Tatsumoto N, Al-Hilali N, Hussain N, Fathy V, Negm H, Alhilali M, Grzegorzewska A, Cieszynski K, Kaczmarek A, Sowinska A, Soleymanian T, Najafi I, Ganji MR, Ahmadi F, Saddadi F, Hakemi M, Amini M, Tong LNMN, Yongcheng HNMN, Qijun WNMN, Shaodong LNMN, Velioglu A, Albaz M, Arikan H, Tuglular S, Ozener C, Bakirdogen S, Eren N, Mehtap O, Bek SG, Cekmen MB, Yilmaz A, Cabana Carcasi MLL, Fernandez Ferreiro A, Fidalgo Diaz M, Becerra Mosquera V, Alonso Valente R, Buttigieg J, Borg Cauchi A, Rogers M, Buhagiar L, Farrugia Agius J, Vella MP, Farrugia E, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Kang SW, Choi KH, Sikorska D, Frankiewicz D, Klysz P, Schwermer K, Hoppe K, Nealis J, Kaczmarek J, Baum E, Wanic-Kossowska M, Pawlaczyk K, Oko A, Hiss M, Gerstein F, Haller H, Gueler F, Fukasawa M, Manabe T, Wan Q, He Y, Zhu D, Li J, Xu H, Yayar O, Eser B, Buyukbakkal M, Ercan Z, Erdogan B, Merhametsiz O, Yildirim T, Kali A, Haspulat A, Oztemel A, Akdag I, Ayli MD, Pilcevic D, Kovacevic Z, Maksic D, Paunic Z, Tadic-Pilcevic J, Mijuskovic M, Petrovic M, Obrencevic K, Rabrenovic V, Ignjatovic L, Terzic B, Jovanovic D, Chang CH, Chang YS, Busuioc M, Guerraoui A, Caillette-Beaudoin A, Bahte SK, Hiss M, Kielstein JT, Polinder-Bos H, Emmelot-Vonk M, Gaillard C. Peritoneal dialysis II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lai X, Schulz C, Seifert F, Dolniak B, Wolkenhauer O, Vera J, Schmeck B, Sittka A. The role of microRNA regulation in the early inflammatory response: miR-146a and NF-κB signaling in lung inflammation. Pneumologie 2013. [DOI: 10.1055/s-0033-1334618] [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: 10/27/2022]
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Sun Y, Joachimski MM, Wignall PB, Yan C, Chen Y, Jiang H, Wang L, Lai X. Lethally Hot Temperatures During the Early Triassic Greenhouse. Science 2012; 338:366-70. [DOI: 10.1126/science.1224126] [Citation(s) in RCA: 693] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Luan X, Liao W, Lai X, He Y, Liu Y, Gong J, Li J. Dynamic Changes of Indoleamine 2,3-Dioxygenase of Kupffer Cells in Rat Liver Transplant Rejection and Tolerance. Transplant Proc 2012; 44:1045-7. [DOI: 10.1016/j.transproceed.2012.01.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Liu J, Liu J, Liu Y, Xu Y, Zhao X, Qian J, Sun B, Xing C, Kanda R, Hamada C, Nakano T, Wakabayashi K, Io H, Horikoshi S, Tomino Y, Ishimatsu N, Miyamoto T, Morimoto H, Nakamata J, Baba R, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Nakamata J, Morimoto H, Baba R, Ishimatsu N, Miyamoto T, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Kusumoto T, Fukami K, Yamagishi SI, Ueda S, Kaida Y, Hazama T, Nakayama Y, Ando R, Obara N, Okuda S, Tamura M, Matsumoto M, Miyamoto T, Kanegae K, Furuno Y, Serino R, Kabashima N, Otsuji Y, Bang-Gee H, Mazzotta L, Rosati A, Carlini A, Henriques VT, Zangiacomi Martinez E, Divino-Filho JC, Pecoits-Filho R, Cardeal Da Costa JA, Henriques VT, Henriques VT, Gama Axelsson T, Lindholm B, Carrero JJ, Heimburger O, Stenvinkel P, Qureshi AR, Akazawa M, Uno T, Kanda E, Maeda Y, Aktsiali M, Aktsiali M, Antonopoulou S, Tsiolaki K, Bakirtzi N, Patrinou A, Georgopoulou M, Liaveri P, Afentakis N, Tsirpanlis G, Hasegawa T, Nishiwaki H, Hirose 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Tsuruya K, Yoshida H, Maruyama H, Goto S, Nakayama M, Nakamoto H, Morinaga H, Matsuo S, Makino H, DI Gioia MC, Gallar P, Laso N, Rodriguez I, Cobo G, Oliet A, Hynostroza J, Herrero JC, Mon C, Ortiz M, Vigil A, Tomo T, Portoles J, Uta S, Uta S, Tato AM, Lopez-Sanchez P, Rivera M, Rodriguez-Pena R, Del Peso G, Ortega M, Felipe C, Tsampikaki E, Aperis G, Kaikis A, Paliouras C, Karvouniaris N, Maragaki M, Alivanis P, Kortus-Gotze B, Hoferhusch T, Hoyer J, Martino F, Kaushik M, Rodighiero MP, Creapldi C, Ronco C, Lacquaniti A, Lacquaniti A, Donato V, Fazio MR, Lucisano S, Cernaro V, Lupica R, Buemi M, Aloisi C, Uno T, Akazawa M, Kanda E, Maeda Y, Bavbek Ruzgaresen N, Secilmis S, Yilmaz H, Akcay A, Duranay M, Akalin N, Akalin N, Altiparmak MR, Trabulus S, Yalin AS, Ataman R, Serdengecti K, Schneider K, Bator B, Niko B, Braun N, Peter F, Ulmer C, Joerg L, Martin K, Dagmar B, German O, Fabian R, Juergen D, Stephan S, Dominik A, Latus J, Latus J, Ulmer C, Fritz P, Rettenmaier B, Hirschburger S, 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Peritoneal dialysis. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lin Y, Lai X, Chen G, Xu Y, Huang B, Wu Y, Chen Z, Yao L, Lin F, Qiao Y, Chen Z, Zhu S, Huang H, Wen J. Association among serum uric acid, cardiovascular risk, and arterial stiffness: a cross-sectional study in She ethnic minority group of Fujian Province in China. J Endocrinol Invest 2012; 35:290-7. [PMID: 21646856 DOI: 10.3275/7765] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES To investigate the association between serum uric acid levels, cardiovascular risk, and arterial stiffness in She ethnic minority in South China's Fujian Province. METHODS 5109 participants aged 20-79 yr were enrolled in analysis. Tpeak-Tend interval (Tp-e), QT interval, and height of the R wave in lead aVL (aVLR) were measured on 12-lead electrocardiogram (ECG), and Minnesota code-indicated major abnormal ECG MA-ECG was used as a risk indicator of cardiovascular disease. Arterial stiffness was assessed by brachial-ankle pulse wave velocity (baPWV). RESULTS Longer Tp-e interval, greater Tp-e/QT ratio, and higher aVLR were observed in the highest quartile of uric acid level. The incidence of MA-ECG was gradually increased from lowest to highest quartile of serum uric acid in males (p for trend <0.01). After adjusting traditional cardiovascular risk factors, multivariate analysis revealed that the fourth quartile of serum uric acid level was independently associated with MA-ECG in males [odds ratios (OR) (95% confidence interval): 2.129 (1.376-3.295)] but not in females. Serum uric acid was also associated with abnormal baPWV, when adjusted for atherogenic confounders. Compared with the lowest serum uric acid quartile, the OR (95% confidence interval) of the second, third, and fourth quartile were 1.920 (1.246-2.957), 1.650 (1.064-2.558), and 2.501 (1.600-3.908) in males. CONCLUSION Among China's She ethnic minority, uric acid level was independently related to arterial stiffness assessed by baPWV in both genders. The evaluation of uric acid level was related to higher cardiovascular risk in males but not in females.
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Affiliation(s)
- Y Lin
- Department of Endocrinology, Ningde Municipal Hospital, Fujian Medical University, Ningde, China
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Luo Y, Hu Y, Shi J, Tan Y, Lai X, He J, Zheng W, Cai Z, Huang H. Donor and Recipient Hbv Immunity Before Transplantation Simultaneously Affects the Acquisition of Hbv Immunity After Unrelated-Donor Hematopoietic Stem Cell Transplantation. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.399] [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: 10/14/2022]
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