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Zhang PP, Zhang J, Sun ZL, Zhou YG, Wang Y, Zhang HR, Xiao RF, Li YZ, Mu R, Zhao Y, Song YJ, Yang RF, Lin C. [International multi-center evaluation of a rapid antigen test based on gold immunochromatographic assay for detection of severe acute respiratory syndrome coronavirus 2]. Zhonghua Yi Xue Za Zhi 2022; 102:2483-2488. [PMID: 36008317 DOI: 10.3760/cma.j.cn112137-20220426-00922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: The gold immunochromatographic assay for detection of SARS-CoV-2 antigen was evaluated by international multi-center clinical trial. Methods: A total of 1 855 clinical parallel samples with valid test results (for nucleic acid and antigen tests, respectively) were collected from nine countries, including Germany, the United Kingdom, Ukraine, France, India, Thailand, Malaysia, the United States of America and Brazil, with sampling period from January 3 to September 22, 2021. These samples were detected by SARS-CoV-2 antigen test kit (colloidal gold immunochromatography assay) and nucleic acid detection kit (real-time fluorescent quantitative reverse transcription polymerase chain reaction). Positive coincidence rates [(number of antigen-positive cases/nucleic acid-positive cases)×100%], negative coincidence rates [(number of antigen-negative cases/nucleic acid-negative cases)×100%], total coincidence rates [(number of cases with consistent results for both antigen and nucleic acid detection/number of total cases) ×100%], as well as Kappa values were calculated. The differences of the above indictors among different countries were evaluated by the coefficient of variation. The detection rates of the antigen test for samples with different cycle threshold values (Ct values) for the nucleic acid detection, different characteristics and different mutant strains were analyzed. Results: For all samples, the positive, negative, and total coincidence rate between the antigen test and nucleic acid assay was 90.8% (569/627), 99.7% (1 224/1 228) and 96.7% (1 793/1 855), respectively, and the consistency coefficient Kappa value was 0.924. Among these countries, the coefficient of variation for positive coincidence rates (except for Malaysia with a lot of samples with Ct value>30), negative coincidence rates (except for France without negative samples) and total coincidence rates (except for France) was 6%,<1%, and 6%, respectively. When Ct values were less than 25, the detection rates of antigen test were 83.3%-100% for each countries (the coefficient of variation was 6%); the total detection rate and the coefficient of variation was 93.4% (428/458) and 5%, respectively, for asymptomatic infected persons and cases within 7 days post onset of symptoms; the total detection rate for various SARS-CoV-2 mutant strains was 97.5% (119/122); and it showed negative results for samples from cases infected with other viruses, including influenza A virus subtype H1N1, influenza B virus, respiratory syncytial virus subgroups A and B, coxsackievirus 16, human metapneumovirus, parainfluenza virus types 1 and 4, Epstein-Barr virus and adenovirus. Conclusion: The SARS-CoV-2 antigen test kit showed excellent authenticity, and there were few differences for its indictors among nine countries, therefore it can meet the needs of large-scale early screening of SARS-CoV-2 infection.
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Affiliation(s)
- P P Zhang
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
| | - J Zhang
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
| | - Z L Sun
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510630, China
| | - Y G Zhou
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - Y Wang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - H R Zhang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R F Xiao
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Y Z Li
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R Mu
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - Y Zhao
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Y J Song
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R F Yang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Changqing Lin
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
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Zhang PP, Zhang J, Sun ZL, Zhou YG, Wang Y, Zhang HR, Xiao RF, Li YZ, Mu R, Zhao Y, Song YJ, Yang RF, Lin C. [International multi-center evaluation of a rapid antigen test based on gold immunochromatographic assay for detection of severe acute respiratory syndrome coronavirus 2]. Zhonghua Yi Xue Za Zhi 2022; 102:1-6. [PMID: 35701088 DOI: 10.3760/cma.j.issn.112137-20220426-00922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: The gold immunochromatographic assay for detection of SARS-CoV-2 antigen was evaluated by international multi-center clinical trial. Methods: A total of 1 855 clinical parallel samples with valid test results (for nucleic acid and antigen tests, respectively) were collected from nine countries, including Germany, the United Kingdom, Ukraine, France, India, Thailand, Malaysia, the United States of America and Brazil, with sampling period from January 3, 2021 to September 22, 2021. These samples were detected by SARS-CoV-2 antigen test kit (colloidal gold immunochromatography assay) and nucleic acid detection kit (real-time fluorescent quantitative reverse transcription polymerase chain reaction). Positive coincidence rates [(number of antigen-positive cases/nucleic acid-positive cases)×100%], negative coincidence rates [(number of antigen-negative cases/nucleic acid-negative cases)×100%], total coincidence rates [(number of cases with consistent results for both antigen and nucleic acid detection/number of total cases) ×100%], as well as Kappa values were calculated. The differences of the above indictors among different countries were evaluated by the coefficient of variation. The detection rates of the antigen test for samples with different cycle threshold values (Ct values) for the nucleic acid detection, different characteristics and different mutant strains were analyzed. Results: For all samples, the positive, negative, and total coincidence rate between the antigen test and nucleic acid assay was 90.8% (569/627), 99.7% (1 224/1 228) and 96.7% (1 793/1 855), respectively, and the consistency coefficient Kappa value was 0.924. Among these countries, the coefficient of variation for positive coincidence rates (except for Malaysia with a lot of samples with Ct value>30), negative coincidence rates (except for France without negative samples) and total coincidence rates (except for France) was 6%,<1%, and 6%, respectively. When Ct values were less than 25, the detection rates of antigen test were 83.3%-100% for each countries (the coefficient of variation was 6%); The total detection rate and the coefficient of variation was 93.4% (428/458) and 5%, respectively, for asymptomatic infected persons and cases within 7 days post onset of symptoms; the total detection rate for various SARS-CoV-2 mutant strains was 97.5% (119/122); and it showed negative results for samples from cases infected with other viruses, including influenza A virus subtype H1N1, influenza B virus, respiratory syncytial virus subgroups A and B, coxsackievirus 16, human metapneumovirus, parainfluenza virus types 1 and 4, Epstein-Barr virus and adenovirus. Conclusion: The SARS-CoV-2 antigen test kit showed excellent authenticity, and there were few differences for its indictors among nine countries, therefore it can meet the needs of large-scale early screening of SARS-CoV-2 infection.
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Affiliation(s)
- P P Zhang
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
| | - J Zhang
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
| | - Z L Sun
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510630, China
| | - Y G Zhou
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - Y Wang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - H R Zhang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R F Xiao
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Y Z Li
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R Mu
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - Y Zhao
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Y J Song
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - R F Yang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Changqing Lin
- Beijing Key Laboratory of POCT for Bioemergency and Clinic (BZ0329), Beijing 100071, China
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Liu YN, Fan R, Yang RF, Liu S, Wang J, Liao H, Qiu C, Deng R, Huang HX, Hu P, Zheng SJ, Zhang WH, Chen XM, Chen H, Sun J, Lu F. [Expert consensus on measurement and clinical application of serum HBV RNA in patients with chronic HBV infection]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:505-512. [PMID: 35764542 DOI: 10.3760/cma.j.cn501113-20220420-00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Since the discovery of circulating hepatitis B virus (HBV) RNA in the peripheral blood of patients with chronic hepatitis B in 1996, a growing number of studies have focused on clarifying the biological characteristics and clinical application value of serum HBV RNA. This consensus mainly summarizes the research progress of serum HBV RNA existing profiles, quantitative detection methods, and current clinical applications. In order to better apply this indicator for the clinical management of patients with chronic HBV infection, recommendations on quantitative detection target regions, detection results, and clinical applications are put forward.
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Affiliation(s)
- Y N Liu
- Department of Microbiology & Infectious Disease Center, Peking University Health Science Center, Beijing 100191, China
| | - R Fan
- Guangdong Provincial Institute of Liver Disease, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R F Yang
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing 100044, China
| | - S Liu
- Guangdong Provincial Institute of Liver Disease, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Wang
- Department of Microbiology & Infectious Disease Center, Peking University Health Science Center, Beijing 100191, China
| | - H Liao
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, Southern University of Science and Technology, National Clinical Research Center for Infectious Diseases, Shenzhen 518112, China
| | - C Qiu
- Department of Infectious Diseases, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - R Deng
- Guangdong Provincial Institute of Liver Disease, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H X Huang
- Department of Microbiology & Infectious Disease Center, Peking University Health Science Center, Beijing 100191, China
| | - P Hu
- Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Institute for Viral Hepatitis of Chongqing Medical University, Chongqing 400010, China
| | - S J Zheng
- Liver Diseases Center, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - W H Zhang
- Department of Infectious Diseases, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - X M Chen
- Department of Microbiology & Infectious Disease Center, Peking University Health Science Center, Beijing 100191, China
| | - Hongsong Chen
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing 100044, China
| | - Jian Sun
- Guangdong Provincial Institute of Liver Disease, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Fengmin Lu
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing 100044, China Department of Microbiology & Infectious Disease Center, Peking University Health Science Center, Beijing 100191, China
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Li H, Rha SW, Choi BG, Choi SY, Moon SK, Jang WY, Kim W, Ahn JH, Park SH, Choi WG, Yang RF, Bai WW, Choi CU, Ryu YG, Baek MJ, Oh DJ. Impact of chronic outward force on arterial responses of proximal and distal of long superficial femoral artery stent. BMC Cardiovasc Disord 2021; 21:323. [PMID: 34193057 PMCID: PMC8246708 DOI: 10.1186/s12872-021-02141-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 06/24/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Self-expanding nitinol stent (SENS) implantation is commonly oversized in the superficial femoral artery (SFA), and leads to chronic outward force (COF) and in-stent restenosis (ISR). This study aimed to investigate the impact of COF of oversizing SENS on ISR of SFA. METHODS In patients with implanted SENS in SFA, intimal hyperplasia especially between proximal segment and distal segment was evaluated by quantitative angiography, and the impact of COF on mid-term angiographic outcomes was investigated. In addition, porcine model with implanted SENS was used to evaluate the impact of COF on angiographic and histopathologic outcomes at 1 month. Excised stented arteries were evaluated by histopathologic analysis. RESULTS We analyzed 65 SENS in 61 patients with follow-up angiography at 6 months to 1 year. The baseline diameter was 6.8 ± 0.71 mm and length were 97.0 ± 33.8 mm for the SENS. The ratio of the diameter of the stent to the reference vessel was 1.3 ± 0.24 at the proximal portion and 1.53 ± 0.27 at the distal portion (P < 0.001). In the long SFA stent, stent-to-vessel ratio was significantly higher in the distal stent than in the proximal stent (1.3 ± 0.2 vs. 1.55 ± 0.25, P = 0.001). ISR incidence was higher at the distal stent (37.3% vs 52.6%, P = 0.029). All 11 pigs survived for 4 weeks after SENS implantation. The vessel diameter was 4.04 ± 0.40 mm (control group) vs 4.45 ± 0.63 mm (oversized group), and the implanted stent diameter was 5.27 ± 0.46 mm vs. 7.18 ± 0.4 mm (P = 0.001). The stent-to-vessel diameter ratio was 1.31 ± 0.12 versus 1.63 ± 0.20 (P < 0.001). After 4 weeks, restenosis % was 29.5 ± 12.9% versus 46.8 ± 21.5% (P = 0.016). The neointimal area was 5.37 ± 1.15 mm2 vs. 8.53 ± 5.18 mm2 (P = 0.05). The restenosis % was 39.34 ± 8.53% versus 63.97 ± 17.1% (P = 0.001). CONCLUSIONS COF is an important cause of restenosis in the distal portion of the SFA stent. Optimal sizing of the SFA stent is important to reduce the incidence of restenosis. Therefore, COF was an important factor of restenosis following distal SFA stenting.
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Affiliation(s)
- Hu Li
- Department of Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.,Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Seung-Woon Rha
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea.
| | - Byoung Geol Choi
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Se Yeon Choi
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Sang Ki Moon
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Won Young Jang
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Woohyeun Kim
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Ji Hun Ahn
- Department of Cardiology, Soon Chun Hyang University Gumi Hospital, Gumi-si, Republic of Korea
| | - Sang-Ho Park
- Department of Cardiology, Soonchunhyang University Cheonan Hospital Korea, Cheonan-Ii, Republic of Korea
| | - Woong Gil Choi
- Department of Internal Medicine, School of Medicine, Konkuk University, Chungju, Republic of Korea
| | - Rui Feng Yang
- Department of Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wen Wei Bai
- Department of Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Cheol Ung Choi
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Yang Gi Ryu
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Man Jong Baek
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
| | - Dong Joo Oh
- Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea
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Zhou QN, Lin WH, Jing R, Liu JJ, Shi HY, Yang RF, Gao P, Zhang Y. [The predictive value of epicardial adipose tissue and inflammatory factors for in-stent restenosis]. Zhonghua Yi Xue Za Zhi 2020; 99:3732-3736. [PMID: 31874499 DOI: 10.3760/cma.j.issn.0376-2491.2019.47.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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 predictive value of epicardial adipose tissue volume (EATV) and inflammatory factors on in-stent restenosis (ISR) after percutaneous coronary implantation (PCI) in patients with coronary heart disease (CAD). Methods: A total of 407 patients with CAD who were treated with drug-eluting stents in TEDA international cardiovascular disease hospital were enrolled from November 2016 to October 2017. Levels of inflammatory cytokines such as high sensitive c-reactive protein (Hs-CRP), interleukin-6 (IL-6), and tumor necrosis factor (TNF-α) were detected. EATV was measured preoperatively by multi-sliced CT. Patients were divided into ISR group (n=52) and N-ISR group (n=355) according to ISR occurred within 1 year after procedure. The relationship between EATV and inflammatory factors and ISR after PCI was analyzed. Results: The differences between ISR group (n=52) and N-ISR group (n=355) were statistically significant in terms of diabetes history, IL-6, TNF-α, EATV ((150±36) cm(3)vs(120±40) cm(3),P=0.001)), bifurcation lesions, stent length and Gensini score (P<0.05). Multivariate Logistic regression analysis results showed that diabetes history,bifurcation lesions, TNF-α, EATV, and Gensini score were risk factors for in-stent restenosis.The area under the ROC curve (AUC) of EATV, TNF-α, and IL-6 in patients with CAD after PCI was 0.712, 0.752 and 0.675 (95%CI 0.648-0.776, 0.686-0.819, 0.584-0.766, respectively, all P<0.001), with a sensitivity of 86.5%, 67.3% and 69.2%, a specificity of 53.8%, 74.4% and 70.1% and a cut-off value of 116.61 cm(3),138.40 µg/L and 126.4 µg/L, respectively. Conclusion: EATV, TNF-α, and IL-6 have certain predictive values for in-stent restenosis, and can be used as clinical indicators to predict in-stent restenosis.
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Affiliation(s)
- Q N Zhou
- Clinical College of Cardiology, Tianjin Medial University and TEDA International Cardiovascular Hospital, Tianjin 300070, China
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He Y, Huang Y, Li N, Yan H, Yang RF, Jiang L, Jiang XH, Cao B. [Expression of IRX1 in cervical cancer and its correlation with clinical stage of cervical cancer]. Zhonghua Yi Xue Za Zhi 2018; 98:222-226. [PMID: 29374919 DOI: 10.3760/cma.j.issn.0376-2491.2018.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the expression of IRX1 (Iroquois homeobox gene) in cervical cancer and its correlation with clinical stage of cervical cancer. Methods: A total of 61 patients with cervical cancer from January 2015 to January 2017 were enrolled in this study, of which 15 were classified as phase Ⅰ of cervical cancer, 22 patients were classified as phase Ⅱ, 19 cases were classified as phase Ⅲ, 5 cases were classified as phase Ⅳ followed FIGO staging criteria.The expression of IRX1 protein in Hela, C4-1 and Siha cell lines were detected by Western blot compared with the normal human cervical epithelial cells HCerEpiC.Collected cancerous tissue of cervical cancer as experimental samples, the expression of IRX1 mRNA in cancer tissues and paracancerous tissue were detected by qPCR.Immunohistochemistry was used to detect the expression of IRX1 in different stages of cervical cancer, the correlation between IRX1 expression and clinical stage was analyzed. Results: The results of Western blot showed that IRX1 expression in cervical cancer cells were higher than that in normal cervical epithelial cells, and the results of qPCR also showed that the expression of IRX1 increased with the stage of cancer at the gene level.The difference was statistically significant.The expression of IRX1 in the nucleus and cytoplasm were detected by immunohistochemistry.Immunohistochemical results showed that the higher the stage of cancer was, the higher the expression rate of IRX1 was. Conclusion: IRX1 expression is associated with the clinical stage of cervical cancer, suggesting that IRX1 may be involved in the development and progression of cervical cancer.IRX1 is expected to be a new molecular target for the diagnosis and treatment of cervical cancer. This study will provide a new theoretical basis for the treatment of cervical cancer.
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Affiliation(s)
- Y He
- Hubei Cancer Hospital, Wuhan 430079, China
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7
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Li XH, Yang RF, Jin Q, Ma DL, Wang H, Wei L, Ma H. [Change in neutrophil-lymphocyte ratio during antiviral therapy for HBeAg-positive chronic hepatitis B patients and its predictive value]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:60-62. [PMID: 29804364 DOI: 10.3760/cma.j.issn.1007-3418.2018.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- X H Li
- Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Peking University People's Hospital, Peking University Hepatology Institute, Beijing 100044, China
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Yang RF, Yu B, Zhang RQ, Wang XH, Li C, Wang P, Zhang Y, Han B, Gao XX, Zhang L, Jiang ZM. Bevacizumab and gefitinib enhanced whole-brain radiation therapy for brain metastases due to non-small-cell lung cancer. ACTA ACUST UNITED AC 2017; 51:e6073. [PMID: 29185589 PMCID: PMC5685055 DOI: 10.1590/1414-431x20176073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 08/02/2017] [Indexed: 12/16/2022]
Abstract
Non-small-cell lung cancer (NSCLC) patients who experience brain metastases are usually associated with poor prognostic outcomes. This retrospective study proposed to assess whether bevacizumab or gefitinib can be used to improve the effectiveness of whole brain radiotherapy (WBRT) in managing patients with brain metastases. A total of 218 NSCLC patients with multiple brain metastases were retrospectively included in this study and were randomly allocated to bevacizumab-gefitinib-WBRT group (n=76), gefitinib-WBRT group (n=77) and WBRT group (n=75). Then, tumor responses were evaluated every 2 months based on Response Evaluation Criteria in Solid Tumors version 1.0. Karnofsky performance status and neurologic examination were documented every 6 months after the treatment. Compared to the standard WBRT, bevacizumab and gefitinib could significantly enhance response rate (RR) and disease control rate (DCR) of WBRT (P<0.001). At the same time, RR and DCR of patients who received bevacizumab-gefitinib-WBRT were higher than those who received gefitinib-WBRT. The overall survival (OS) rates and progression-free survival (PFS) rates also differed significantly among the bevacizumab-gefitinib-WBRT (48.6 and 29.8%), gefitinib-WBRT (36.7 and 29.6%) and WBRT (9.8 and 14.6%) groups (P<0.05). Although bevacizumab-gefitinib-WBRT was slightly more toxic than gefitinib-WBRT, the toxicity was tolerable. As suggested by prolonged PFS and OS status, bevacizumab substantially improved the overall efficacy of WBRT in the management of patients with NSCLC.
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Affiliation(s)
- R F Yang
- Department of Thoracic Surgery, Qianfoshan Hospital of Shandong Province, Shandong University, Ji'nan, Shandong, China.,Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - B Yu
- Department of Anus and Intestine Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - R Q Zhang
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - X H Wang
- Department of Digestive System, Taian City Central Hospital, Taian, Shandong, China
| | - C Li
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - P Wang
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - Y Zhang
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - B Han
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - X X Gao
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - L Zhang
- Department of Thoracic Surgery, Taian City Central Hospital, Taian, Shandong, China
| | - Z M Jiang
- Department of Thoracic Surgery, Qianfoshan Hospital of Shandong Province, Shandong University, Ji'nan, Shandong, China
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9
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Wu YR, Yang RF, Cui YJ. [Population genomic researches of Escherichia coli]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:554-8. [PMID: 27256740 DOI: 10.3760/cma.j.issn.0253-9624.2016.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Population genomics, an interdiscipline of genomics and population genetics, is booming in recent years with the rapid growth number of deciphered genomes and revolutionizes the understanding of bacterial population diversity and evolution dynamics. It also largely improves the prevention and control of infectious disease through providing more accurate genotyping and source-tracing results and more comprehensive characteristics of emerging pathogens. In this review, taking one of the best characterized bacteria, Escherichia coli, as model, we reviewed the phylogenetic relationship across its five major populations (designated A, B1, B2, D and E); and summarized researches on molecular mutation rate, selection signals, and patterns of adaptive evolution. We also described the application of population genomics in responding against large-scale outbreaks of E. coli O157:H7 and E. coli O104:H4. These results indicated that, although being a novel discipline, population genomics has played an important role in deciphering bacterial population structures, exploring evolutionary patterns and combating emerging infectious diseases.
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Affiliation(s)
- Y R Wu
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
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Yang RF. [Emergent and spreading mechanisms of newly emerging and outbreak pathogens]. Zhonghua Yu Fang Yi Xue Za Zhi 2016; 50:1119. [PMID: 28057120 DOI: 10.3760/cma.j.issn.0253-9624.2016.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- R F Yang
- Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
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Li J, Tan A, Ma S, Yang RF, Arenholz E, Hwang C, Qiu ZQ. Chirality switching and winding or unwinding of the antiferromagnetic NiO domain walls in Fe/NiO/Fe/CoO/Ag(001). Phys Rev Lett 2014; 113:147207. [PMID: 25325659 DOI: 10.1103/physrevlett.113.147207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Indexed: 06/04/2023]
Abstract
Fe/NiO/Fe/CoO/Ag(001) single crystalline films were grown epitaxially and investigated by x-ray magnetic circular dichroism and x-ray magnetic linear dichroism. The bottom Fe layer magnetization is pinned through exchange coupling to the CoO layer and the top Fe layer magnetization can be rotated by an in-plane external magnetic field. We find that the NiO spins wind up to form a domain wall due to the perpendicular NiO/Fe interfacial coupling as the top layer Fe magnetization rotates from 0° to 90°, but switch wall chirality and unwind the wall as the Fe magnetization rotates from 90° to 180°. This observation shows that Mauri's 180° domain wall does not exist in perpendicularly coupled ferromagnetic-antiferromagnetic systems in the strong coupling regime.
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Affiliation(s)
- J Li
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA
| | - A Tan
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA
| | - S Ma
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA and Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - R F Yang
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA
| | - E Arenholz
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C Hwang
- Korea Research Institute of Standards and Science, Yuseong, Daejeon 305-340, Korea
| | - Z Q Qiu
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA
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Liu LJ, Wang JH, Du SC, Tian JH, Yang RF, Wei L. rtE218G, a novel hepatitis B virus mutation with resistance to adefovir dipivoxil in patients with chronic hepatitis B. J Viral Hepat 2010; 17 Suppl 1:66-72. [PMID: 20586936 DOI: 10.1111/j.1365-2893.2010.01273.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Antiviral therapy is a potentially successful approach for the treatment of patients with Hepatitis B virus (HBV) infection. One antiviral agent is the nucleoside analogue adefovir dipivoxil (ADV). Its efficiency is compromised by the emergence of drug-resistant HBV mutants. Although three major ADV-resistant mutations of HBV are known, rtA181T/V and rtN236T, HBV mutations associated with ADV resistance have not been fully identified. We analyzed DNA sequences that covered a 244 base pair region of the HBV polymerase gene from patients with clinical manifestations of ADV resistance. A novel pattern of amino acid substitutions in HBV polymerase was detected in 26 out of 86 patients. This mutant exhibited a substitution of glycine for glutamic acid at residue 218 (rtE218G). Transient transfection of the HBV replication-competent construct including the rtE218G mutation was performed in HepG2 cells in order to determine the relevance of this mutation to ADV resistance. Phenotypic analyses demonstrated that the rtE218G mutation could independently confer resistance to ADV in vitro, with a 50% inhibitory concentration (IC(50)) 5.5-fold higher than wild-type HBV. RtE218G-mutated HBV also showed a decreased replication capacity in vitro, equal to 87% of wild-type HBV. The present study showed that the rtE218G mutation may be a novel ADV-resistant mutation. Further work will focus on resistance surveillance and cross-resistance analyses, and the molecular mechanisms involved.
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Affiliation(s)
- L J Liu
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing, China
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Shen GJ, Yang RF, Yu AM. [Simultaneous separation of organic acid and organic salts by electrostatic ion chromatography]. Se Pu 2001; 19:436-8. [PMID: 12545440] [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] [Indexed: 02/28/2023] Open
Abstract
The electrostatic ion chromatographic column was prepared by coating conjugated acid salt micelles on the surface of octadecyl silica stationary phase. Pure water was used as mobile phase, and the conductance detector was connected on-line to electrostatic ion chromatograph. The conditions under which organic acid and organic salts were detected were studied. The mechanism for the above separation is discussed. Sodium benzoate and citric acid in Lichee drink were separated and determined. This method is rapid, simple with little interference and good reproducibility without any pollution since the mobile phase is water. This is an environmental friendly analytical method.
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Affiliation(s)
- G J Shen
- Department of Chemistry, Jilin University, Changchun 130023, China
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Guo GR, Yang RF, Yang JH. [Nosocomial infection of nephrotic syndrome in childhood]. Zhonghua Hu Li Za Zhi 1995; 30:462-4. [PMID: 8631106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Abstract
The zero-stress state of a vein is, like that of an artery, not a closed cylindrical tube, but is a series of segments whose cross-sections are open sectors. An opening angle of each sector is defined as the angle subtended between two radii joining the midpoint of the inner wall to the tips of the inner wall. Data on the opening angles (mean +/- standard deviation) of the veins and vena cava of the rat are presented. For the superior vena cava and subclavian, jugular, facial, renal, common iliac, saphenous, and plantar veins, the opening angle varies in the range of 25 to 75 deg. The inferior vena cava (below the heart), however, has noncircular, nonaxisymmetric cross-sections, a curved axis, and a rapid longitudinal variation of its "diameter"; its zero-stress state is not circular sectors; but the opening angle is still a useful characterization. The mean opening angle of the interior vena cava varies in the range of 40 to 150 deg in the thoracic portion, and 75 to 130 deg in the abdominal portion, with the larger values occurring about the middle of each portion. There are considerable length, diameter reductions, and wall thickening of the vena cava from the homeostatic state to the no-load state in vitro. Physically, the zero-stress state is the basis of the stress analysis of blood vessels. The change of opening angle is a convenient parameter to characterize any nonuniform remodeling of the vessel wall due to changes in physical stress or chemical environment.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J P Xie
- Department of AMES-Bioengineering, University of California, San Diego, La Jolla 92093
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Yang RF, Huang LY, Gao SD. First isolation of Legionella gormanii in China. Chin Med J (Engl) 1990; 103:76-9. [PMID: 2112449] [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] [Indexed: 12/30/2022] Open
Abstract
The first strain of non-Legionella pneumophila, L-88-1, was isolated from some condensed water in a steam discharge pipe extending from a boiler in China. The organism was characterized by serologic, biochemical, DNA hybridization and electron microscopic studies. It was identified to be L. gormanii.
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Affiliation(s)
- R F Yang
- Department of Bacteriology, Academy of Military Medical Sciences, Beijing
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Abstract
We measured the Fahraeus effect of blood flowing in a sheet flow model formed with two glass slides. The number of red blood cells in the sheet flow was counted to determine a sheet hematocrit Hs and the discharge hematocrit Hd was measured from blood collection. For a Hd in the range of 3 to 30 percent, we find that Hs/Hd is about .83 for a gap of 4.1 microns. When the discharge hematocrit is 30 percent, the ratio decreases to .66 as the gap approaches 7 microns and then increases as the gap becomes thicker. The results indicate that the hematocrit ratio for a gap thicker than 4.1 microns is an increasing function of the discharge hematocrit. The value of Hs/Hd found for the sheet flow models and its dependence on Hd are comparable to those of circular tubes when their diameter equals the gap thickness.
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Affiliation(s)
- L H Deng
- Biomechanics Institute, Chongqing University, Sichuan, China
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Lin MA, Wu ZB, Yang RF. [Clinical observation on the effect of lentinan (776) in improving cellular immunofunction in leukemia patients]. Zhonghua Nei Ke Za Zhi 1985; 24:592-5, 638. [PMID: 3867496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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