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Xu QY, Wen YB, Cui HY, Ye W, Ye WL, Yan XW, Hu YT, Chen G, Qin Y, Chen LM, Li XM. [A case of fibrillary glomerulonephritis with relatively slow progression]. Zhonghua Nei Ke Za Zhi 2024; 63:412-415. [PMID: 38561288 DOI: 10.3760/cma.j.cn112138-20231103-00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Affiliation(s)
- Q Y Xu
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y B Wen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H Y Cui
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - W Ye
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - W L Ye
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X W Yan
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y T Hu
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - G Chen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Qin
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L M Chen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X M Li
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Dai XM, Jiang L, Xu QY, Zhu Y, Lin Q, Shen YY, Li XZ. [A case of juvenile systemic lupus erythematosus with autoimmune hypophysitis]. Zhonghua Er Ke Za Zhi 2024; 62:177-179. [PMID: 38264820 DOI: 10.3760/cma.j.cn112140-20231020-00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Affiliation(s)
- X M Dai
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - L Jiang
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - Q Y Xu
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - Y Zhu
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - Q Lin
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - Y Y Shen
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
| | - X Z Li
- Department of Nephrology and Immunology, Children's Hospital of Soochow University, Suzhou 215000, China
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Xu QY, Chen G, Li XM. [The functional connection of Erythroferrone in iron and energy metabolism]. Zhonghua Nei Ke Za Zhi 2024; 63:121-125. [PMID: 38186129 DOI: 10.3760/cma.j.cn112138-20231024-00245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- Q Y Xu
- Department of Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - G Chen
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X M Li
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Xu QY, Tian M, Lu M, Lu MP, Cheng L. [The role of allergen-specific immunotherapy in the primary and secondary prevention of allergic diseases]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:1259-1265. [PMID: 38186103 DOI: 10.3760/cma.j.cn115330-20230506-00209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- Q Y Xu
- Department of Pediatrics, Suzhou Science & Technology Town Hospital/Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou 215153, China Clinical Allergy Center, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - M Tian
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - M Lu
- Department of Pediatrics, Suzhou Science & Technology Town Hospital/Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou 215153, China
| | - M P Lu
- Clinical Allergy Center, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - L Cheng
- Clinical Allergy Center, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China International Centre for Allergy Research, Nanjing Medical University, Nanjing 210029, China
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Xu QY, Tian M, Lu M, Lu MP, Liu Y, Wang JF, Cheng L. [Research advances on allergen component-resolved diagnosis in respiratory allergic diseases]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1324-1335. [PMID: 37743291 DOI: 10.3760/cma.j.cn112150-20220929-00937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Allergen component-resolved diagnosis (CRD) is an emerging molecular diagnostic technology, which can further clarify the protein profile of allergen components in allergic patients, achieve accurate detection of allergens, and have great significance and value for the precise prevention and treatment of allergic diseases. In this article, the CRD technology and its research progress in respiratory allergic diseases are introduced, and the importance of CRD in the evaluation, prevention and treatment of respiratory allergic diseases are discussed.
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Affiliation(s)
- Q Y Xu
- Department of Pediatrics, Suzhou Science & Technology Town Hospital/Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou 215153, China Clinical Allergy Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - M Tian
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - M Lu
- Department of Pediatrics, Suzhou Science & Technology Town Hospital/Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou 215153, China
| | - M P Lu
- Clinical Allergy Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China Department of Otorhinolaryngology, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y Liu
- Research and Development Department, Hangzhou Zheda Dixun Biological Gene Engineering Co., Ltd., Hangzhou 310052, China Allergy Research Center, Zhejiang University, Hangzhou 310009, China
| | - J F Wang
- Research and Development Department, Hangzhou Zheda Dixun Biological Gene Engineering Co., Ltd., Hangzhou 310052, China Allergy Research Center, Zhejiang University, Hangzhou 310009, China
| | - L Cheng
- Clinical Allergy Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China Department of Otorhinolaryngology, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China International Centre for Allergy Research, Nanjing Medical University, Nanjing 210029, China
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Xiang QQ, Chen LF, Su Q, DU YK, Liang PY, Kang XD, Shi H, Xu QY, Zhao J, Liu C, Chen XH. Research Progress on Microbial Community Succession in the Postmortem Interval Estimation. Fa Yi Xue Za Zhi 2023; 39:399-405. [PMID: 37859480 DOI: 10.12116/j.issn.1004-5619.2022.420606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
The postmortem interval (PMI) estimation is a key and difficult point in the practice of forensic medicine, and forensic scientists at home and abroad have been searching for objective, quantifiable and accurate methods of PMI estimation. With the development and combination of high-throughput sequencing technology and artificial intelligence technology, the establishment of PMI model based on the succession of the microbial community on corpses has become a research focus in the field of forensic medicine. This paper reviews the technical methods, research applications and influencing factors of microbial community in PMI estimation explored by using high-throughput sequencing technology, to provide a reference for the related research on the use of microbial community to estimate PMI.
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Affiliation(s)
- Qing-Qing Xiang
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Li-Fang Chen
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
- Institute of Criminal Science and Technology, Yunnan Provincial Public Security Department, Kunming 650228, China
| | - Qin Su
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Yu-Kun DU
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Pei-Yan Liang
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - Xiao-Dong Kang
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - He Shi
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - Qu-Yi Xu
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - Jian Zhao
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Chao Liu
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Xiao-Hui Chen
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
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Sun RC, Lyu KY, Feng GW, Xu QY, Lan YJ. [The mediating role of worker-occupation fit between occupational stress and anxiety symptoms in medical staff]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:495-500. [PMID: 35915938 DOI: 10.3760/cma.j.cn121094-20210425-00231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the mediating effect of work-occupation fit between occupational stress and anxiety symptoms in medical staff. Methods: Convenience sampling method was adopted to select participants of one general hospital and three specialized hospitals as respondents for a questionnaire survey in Henan Province from October 2020 to January 2021. A total of 2050 medical staff were investigated, and 1988 valid questionnaires were collected, and the effective rate of the questionnaire was 97.0% (1988/2050) . The "Depression-Anxiety-Stress Scale" and "Worker-Occupation Fit Inventory" were used to evaluate the occupational stress, anxiety symptoms and worker-occupation fit level of medical staff, and the mediation effect of work-occupation fit on the relationship between occupational stress and anxiety symptoms was analyzed using a mediating effect model. Results: The average age of the 1988 medical staff was (32.7±7.8) years old, the positive detection rates of occupational stress and anxiety symptoms were 42.5% (845/1988) and 56.7% (1127/1988) , respectively. Anxiety symptoms of medical staff were positively correlated with occupational stress, negatively correlated with worker-occupation fit (r=0.831, -0.364, P<0.001) , work-occupation fit was negatively correlated with occupational stress (r=-0.259, P<0.001) . The results of the mediation effect analysis showed that occupational stress had a direct effect on anxiety symptoms (β=0.677, BCa 95%CI: 0.648-0.707) , and worker-occupation fit (β=0.047, BCa 95%CI: 0.039-0.056) , characteristic fit (β=0.089, BCa 95%CI: 0.074-0.104) , need-supply fit (β=0.075, BCa 95%CI: 0.062-0.089) , and ability-demand fit (β=0.035, BCa 95%CI: 0.026-0.044) mediated the association between occupational stress and anxiety symptoms in medical staff, with the mediating effect as a percentage of 6.5%, 12.3%, 10.3%, and 4.8%, respectively. Conclusion: Worker-occupation fit has a mediating effect between occupational stress and anxiety symptoms in medical staff, but mainly direct effect.
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Affiliation(s)
- R C Sun
- Department of Preventive Medicine, School of Public Health, Chengdu Medical College, Chengdu 610500, China
| | - K Y Lyu
- Department of Occupational and Environmental Health, West China School of Public Health/West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - G W Feng
- Department of Occupational and Environmental Health, West China School of Public Health/West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Q Y Xu
- Department of Occupational and Environmental Health, West China School of Public Health/West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Y J Lan
- Department of Occupational and Environmental Health, West China School of Public Health/West China Fourth Hospital, Sichuan University, Chengdu 610041, China
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Feng GW, Sun RC, Xu QY, Lan YJ. [Literature analysis of hot topics on occupational noise-induced hearing loss]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:279-282. [PMID: 35545595 DOI: 10.3760/cma.j.cn121094-20210329-00174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the literature of related research reports on occupational hearing loss (ONIHL) , study the characteristics of the subject and determine the research hotspots. Methods: In December 2020, PubMed database was searched by bibliometrics for ONIHL published in PubMed database from January 1971 to December 2020. Bicomb 2.03 software was used to extract the subject. The publication year, publication country, source magazine and subject words were summarized and analyzed. Results: A total of 1 473 papers were included in this study, and the number of papers was 66 from 1971 to 1980, and 628 from 2011 to 2020, an increase of nearly 10 times. The top three countries were the United States, China and Germany, with 31.5% (464/1473) , 11.5% (171/1473) and 6.2% (91/1473) ; The cross-sectional study was the most applied type; The top five words for 2011-2020: Mental Illness, polymorphism, cardiovascular disease, high frequency hearing impairment and standards and regulations. Conclusion: Susceptibility Genes, Psychological Disorders, Cardiovascular Diseases and Risk Assessment are hot areas in ONIHL at present. Researchers should focus on major fields and grasp future trends as a whole.
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Affiliation(s)
- G W Feng
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - R C Sun
- Department of Preventive Medicine, School of Public Health, Chengdu Medical College, Chengdu 610050, China
| | - Q Y Xu
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Y J Lan
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
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Xu QY, Xue H, Yang J, He SN, Lan YJ, Zhang Q. [The influence of subjective comfort of working environment on occupational stress of railway station workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:267-271. [PMID: 35545592 DOI: 10.3760/cma.j.cn121094-20210318-00154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the influential factors of job stress suffered by workers in railway stations, the level of job stress of were measured and subjective comfort of employees targeting to working environment were reported. Methods: In March 2019, a cluster sampling study was designed to collect the personal characteristics, job characteristics and subjective comfort degree of working environment of 432 employees in Chongqing railway stations. Meanwhile, job stress was assessed using the effort-reward imbalance scale. Chi-square test was used to compare the difference of occupational stress detection rate among different stratified factors such as occupational characteristics. Logistic regression was applied to analyze the influential factors of occupational stress. Results: The detection rate of job stress of workers in the railway stations was 31.02% (134/432) . The detection rate of job stress was higher among the divorced workers in railway stations, those earning less than 5, 000 yuan per month, those with 10-20 years' length of service, those who worked as a conductor and other workers including baggageman, station master on duty and assistant engineer (χ(2)=9.61, 14.76, 23.28, 11.06, P=0.008, 0.002, 0.000, 0.011) . The detection rate of job stress was higher among those whose working environment subjective feelings were uncomfortable, the differences were statistically significant (P<0.001) . The results showed that the occupational stress of the staff in the railway stations was influenced by their subjective feeling of air quality, noise and Space Layout (P<0.05) . The risk factors of occupational stress were air quality, noise and uncomfortable space layout (OR=0.571, 0.068, 0.441, P=0.051, 0.054, 0.007) . Conductor, other (Bellboy, Duty Station Master, assistant engineer) were the risk factors of occupational stress (OR=1.884, 2.703, P=0.065, 0.019) . The employees of station A and station B were the risk factors of occupational stress (OR=4.681, 1.811, P=0.002, 0.067) . Conclusion: The higher detection rate of job stress of workers in the railway stations is correlated with the subjective comfort degree of the working environment of the workers.
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Affiliation(s)
- Q Y Xu
- Department of Occupational Health and Environmental Health, West China of Public Health (West China No. 4 Hospital), Sichuan University, Chengdu 610041, China
| | - H Xue
- Department of Health Examination, Chongqing Section of Center for Disease Prevention and Control, China Railway Chengdu Group Co., Ltd, Chongqing 400014, China
| | - J Yang
- Department of Occupational Health and Environmental Health, West China of Public Health (West China No. 4 Hospital), Sichuan University, Chengdu 610041, China
| | - S N He
- Department of Epidemiology and Health Statistics, West China of Public Health (West China No. 4 Hospital), Sichuan University, Chengdu 610041, China
| | - Y J Lan
- Department of Occupational Health and Environmental Health, West China of Public Health (West China No. 4 Hospital), Sichuan University, Chengdu 610041, China
| | - Q Zhang
- Department of Occupational Health and Environmental Health, West China of Public Health (West China No. 4 Hospital), Sichuan University, Chengdu 610041, China
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Liu JJ, DU YK, Zhao J, Kang XD, Yu ZH, Zheng DY, Shi H, Xu QY, Chen LF, Liu C. Effects of Digestive Temperature and Time on Diatom Test. Fa Yi Xue Za Zhi 2022; 38:77-81. [PMID: 35725708 DOI: 10.12116/j.issn.1004-5619.2021.410611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVES To study the effects of temperature and time for diatoms digestion and find out suitable digestive temperature and time. METHODS Eighty pieces of liver tissues were collected, each piece of tissue was 2 g, and 2 mL Pearl River water was added to each piece of tissue. The digestion temperature was set at 100 ℃, 120 ℃, 140 ℃, 160 ℃, 180 ℃ and the digestion time was set at 40, 50, 60, 70, 80 min. The liver tissue and water mixture were divided into 8 portions in each group. All the samples were tested by microwave digestive - vacuum filtration - automated scanning electron microscopy method. The quantity of diatom recovered and the quality of residue on the membrane were recorded. RESULTS When the digestion time was set to 60 min, there were statistically significant differences in the number of diatoms recovered at different temperatures (P<0.05). The maximum number of diatoms recovered was (28 797.50±6 009.67) at 140 ℃, and the minimum residue was (0.60±0.28) mg at 180 ℃. When the digestion temperature was set at 140 ℃, there were statistically significant differences in the number of diatoms recovered at different digestion times (P<0.05). The number of diatoms recovered was the highest at 40 min, it was up to (20 650.88±1 950.29), and the residue quality of each group had no statistical significance among different digestion time groups(P>0.05). CONCLUSIONS The effect of diatom digestion is related to temperature and time. When the digestion temperature was 140 ℃ and the digestion time was 40, 50 and 60 min, it is favorable for diatom test.
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Affiliation(s)
- Jing-Jian Liu
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Yu-Kun DU
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Xiao-Dong Kang
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Zhong-Hao Yu
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Dong-Yun Zheng
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - He Shi
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Li-Fang Chen
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
- Forensic Science Institute of Yunnan Provincial Public Security Department, Kunming 650228, China
| | - Chao Liu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
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Zhang JM, Lin TC, Liao ZY, DU YK, Yu ZH, Liu JJ, Wu SQ, Kang XD, Xu QY, Shi H, Zhao J, Liu C, Gu DE. Comparison of Application of MD-VF-Auto SEM Method and Plankton Gene Multiplex PCR System in the Diagnosis of Drowning. Fa Yi Xue Za Zhi 2022; 38:114-118. [PMID: 35725714 DOI: 10.12116/j.issn.1004-5619.2021.410605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVES To compare the application effect of microwave digestion - vacuum filtration - automated scanning electron microscopy (MD-VF-Auto SEM) method and plankton gene multiplex PCR system in the diagnosis of drowning. METHODS Lung, liver and kidney tissue of 10 non-drowning cases and 50 drowning cases were prepared for further MD-VF-Auto SEM method analysis and plankton gene multiplex PCR system analysis. The positive detection rate of the two methods in each tissue was calculated. RESULTS The positive rate of the MD-VF-Auto SEM method detecting diatoms in drowning cases was 100%, and few diatoms were detected in the liver and kidney tissues of 6 non-drowning cases. By using the plankton gene multiplex PCR system, the diatom positive rate of drowning cases was 84%, and all the non-drowning cases were negative. There were significant differences in the positive rate of the liver, kidney tissues between MD-VF-Auto SEM method and plankton gene multiplex PCR system (P<0.05), as well as the total positive rate of cases. However, no significant differences were found in the positive rates of lung tissues (P>0.05). CONCLUSIONS MD-VF-Auto SEM method is more sensitive than plankton gene multiplex PCR system in diatom test. But the plankton gene multiplex PCR system can also detect plankton other than diatoms. Combination of the two methods can provide a more reliable basis for the diagnosis of drowning.
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Affiliation(s)
- Jian-Miao Zhang
- Huadu District Branch of Guangzhou Public Security Bureau, Guangzhou 510800, China
| | - Tian-Chun Lin
- Huadu District Branch of Guangzhou Public Security Bureau, Guangzhou 510800, China
| | - Zhen-Yu Liao
- Huadu District Branch of Guangzhou Public Security Bureau, Guangzhou 510800, China
| | - Yu-Kun DU
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Zhong-Hao Yu
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jing-Jian Liu
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Sai-Qun Wu
- Guangdong Provincial Public Security Department, Guangzhou 510030, China
| | - Xiao-Dong Kang
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - He Shi
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Chao Liu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Dang-En Gu
- Huadu District Branch of Guangzhou Public Security Bureau, Guangzhou 510800, China
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DU YK, Liu JJ, Kang XD, Yu ZH, Zheng DY, Shi H, Xu QY, Ren JJ, Liu C, Zhao J. Pathway of Diatoms Enter Experimental Rabbits through the Lymphatic System of the Digestive Tract. Fa Yi Xue Za Zhi 2022; 38:67-70. [PMID: 35725706 DOI: 10.12116/j.issn.1004-5619.2021.410607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVES To study whether diatoms can enter the body through the lymphatic system of the digestive tract. METHODS Twenty experimental rabbits were divided into the test group and the control group randomly, and intragastric administration was performed with 20 mL water sample from the Pearl River and 20 mL ultrapure water, respectively. After 30 min, lymph, lungs, livers and kidneys were extracted for the diatom test. The concentration, size and type of diatoms were recorded. RESULTS The concentration of diatoms of the test group was higher than that of the control group (P<0.05). In the test group, Stephanodiscus, Coscinodiscus, Cyclotella, Melosira, Nitzschia, Synedra, Cymbella, and Navicula were detected; in the control group, Stephanodiscus, Coscinodiscus and Cyclotella were detected. The long diameter and the short diameter of diatoms of the test group were higher than those of the control group (P<0.05). In the test group, 1-2 diatoms were detected in 3 lung samples and 2 liver samples, which were Stephanodiscus or Cyclotella, and no diatoms were detected in the kidney samples; in the control group, 1-2 diatoms were detected in 2 lung samples and 3 liver samples, which were Stephanodiscus or Coscinodiscus, and no diatoms were detected in the kidney samples. CONCLUSIONS Diatoms can enter the body through the lymphatic fluid, which is one of the reasons for the presence of diatoms in tissues and organs of non-drowning cadavers.
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Affiliation(s)
- Yu-Kun DU
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jing-Jian Liu
- School of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Xiao-Dong Kang
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Zhong-Hao Yu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Dong-Yun Zheng
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - He Shi
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Jian-Jun Ren
- Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, Jiangsu Province, China
| | - Chao Liu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
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Liu C, Zhao J, Xu QY. [Opportunities and challenges in the diagnosis of postmortem drowning in water]. Fa Yi Xue Za Zhi 2022; 38:1-2. [PMID: 35725697 DOI: 10.12116/j.issn.1004-5619.2021.411211] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Chao Liu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
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DU YK, Zhang TY, Liu JJ, Liu C, Kang XD, Zheng DY, Shi H, Xu QY, Ma KJ, Zhao J. Application of Diatoms Quantitative Analysis in the Diagnosis of Drowning. Fa Yi Xue Za Zhi 2022; 38:110-113. [PMID: 35725713 DOI: 10.12116/j.issn.1004-5619.2021.410707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVES To retrospectively analyze diatom test cases of corpses in water and discuss the value of quantitative analysis of diatoms in the diagnosis of drowning. METHODS A total of 490 cases of water-related death were collected. They were divided into drowning group and postmortem immersion group according to the cause of death. Diatoms in lung, liver, kidney tissue and water sample were analyzed quantitatively by microwave digestion-vacuum filtration-automated scanning electron microscopy (MD-VF-Auto SEM) method. The ratios of content of diatoms in lung tissue and water sample (CL/CD) were calculated. RESULTS The results of diatom test for three organs (lung, liver and kidney) were all positive in 400 cases (85.5%); the content of diatom in lung, liver, kidney tissues, and water samples of drowning group were (113 235.9±317 868.1), (26.7±75.6), (23.3±52.2) and (12 113.3±21 760.0) cells/10 g, respectively; the species of diatom were (7.5±2.8), (2.6±1.9), (2.9±2.1) and (8.9±3.0) types, respectively; the CL/CD of drowning group and postmortem immersion group were (100.6±830.7) and (0.3±0.4), respectively. CONCLUSIONS Quantitative analysis of diatoms can provide supportive evidence for the diagnosis of drowning, and the parameter CL/CD can be introduced into the analysis to make a more accurate diagnosis of drowning.
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Affiliation(s)
- Yu-Kun DU
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Tian-Ye Zhang
- Shanghai Key Laboratory of Crime Scene Evidence, Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai 200083, China
| | - Jing-Jian Liu
- College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Chao Liu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Xiao-Dong Kang
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Dong-Yun Zheng
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - He Shi
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
| | - Kai-Jun Ma
- Shanghai Key Laboratory of Crime Scene Evidence, Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai 200083, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
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Xu QY, Yang LL, Xie HX, Jin YH, Li XL, Zhou XX, Liu MN, Wang MS. [Clinical phenotype and gene mutation analysis of 12 patients with hereditary protein C deficiency in different families]. Zhonghua Xue Ye Xue Za Zhi 2022; 43:35-40. [PMID: 35231991 PMCID: PMC8980666 DOI: 10.3760/cma.j.issn.0253-2727.2022.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 11/10/2022]
Abstract
Objective: To investigate the molecular pathogenesis and clinical features of unrelated 12 patients with inherited coagulation protein C (PC) deficiency in Chinese population. Methods: The PC activity (PC:A) and PC antigen (PC:Ag) were detected by chromogenic substrate and enzyme linked immunosorbent assay, respectively. The nine exons and flanking sequences of the protein C (PROC) gene were amplified by polymerase chain reaction with direct sequencing, and the suspected mutations were validated by reverse sequencing (clone sequencing for deletion mutations) . Results: The PC:A of the 12 probands decreased significantly, ranging from 18% to 55%, and the PC:Ag of the 10 probands decreased significantly. Eleven mutations were found, out of which four mutations [c.383G>A (p.Gly128Asp) , c.997G>A (p.Ala291Thr) , c.1318C>T (p.Arg398Cys) , and c.532G>C (p.Leu278Pro) ] were discovered for the first time. Six mutations were in the serine protease domain, four mutations were located in epidermal growth factor (EGF) -like domains, and one mutation was located in activation peptide. There were two deletion mutations (p.Met364Trp fsX15 and p.Lys192del) , and the rest were missense mutations. Mutations p.Phe181Val and p.Arg189Trp were identified in three unrelated families. All mutations may be inherited, and consanguineous marriages were reported in two families. Among the probands, nine cases had venous thrombosis, two cases had poor pregnancy manifestations, and one case had purpura. Conclusion: Patients with PC deficiency caused by PROC gene defects are prone to venous thrombosis, especially when there are other thrombotic factors present at the same time.
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Affiliation(s)
- Q Y Xu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - L L Yang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - H X Xie
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Y H Jin
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - X L Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - X X Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - M N Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - M S Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Li SX, Jin YH, Yang LL, Xu QY, Li XL, Wang MS. [Analysis of the molecular pathogenesis and clinical phenotypes of 10 patients with inherited coagulation factor Ⅺ deficiency]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:1041-1043. [PMID: 33445854 PMCID: PMC7840561 DOI: 10.3760/cma.j.issn.0253-2727.2020.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- S X Li
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Y H Jin
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - L L Yang
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Q Y Xu
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - X L Li
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - M S Wang
- Medical Laboratory Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Li H, Xu QY, Liu C, Xiao C, Zhao J, Yu ZH, Yang XY, Li Y, Wan LH. Application of Chlorophyte ChlB Gene and Cyanophyte NIES Gene in the Detection of Drowning-Related Plankton. Fa Yi Xue Za Zhi 2021; 37:58-64. [PMID: 33780186 DOI: 10.12116/j.issn.1004-5619.2020.400219] [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] [Received: 02/23/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To construct a polymerase chain reaction-capillary electrophoresis (PCR-CE) detection method using ChlB gene and NIES gene, investigate the method's specificity and sensitivity, and to evaluate its application value in drowning diagnosis. Methods The specific primers ChlB and NIES were designed for the conserved sequence of chlorophyte ChlB gene and cyanophyte NIES gene in GenBank to construct PCR-CE detection method; 50 species of standard DNA samples were amplified; the sensitivity was determined by gradient concentration detection of positive standard samples; 25 actual cadaver lung tissue samples (drowned: 20, natural death: 5) were detected, and the simultaneous detection results of microwave digestion-vacuum filtration-automated scanning electron microscopy (MD-VF-Auto SEM) were simultaneously compared. Results The minimum DNA detection concentration of primers ChlB and NIES was 0.161 ng and 0.109 ng, respectively, which could specifically amplify chlorophyte (Chlorella pyrenoidosa) and cyanophyte [Microcystis aeruginosa (producing and not producing toxin)] widespread in water. The product fragments were 156 bp and 182 bp, respectively. The results of non-drowning tissues were negative. Conclusion This method has high sensitivity and specificity. It can be applied to the detection of plankton related to drowning and combined with MD-VF-Auto SEM method, can increase the detection range of plankton related to drowning and improve the evidence power of drowning diagnosis.
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Affiliation(s)
- H Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chong-qing 400016, China
| | - Q Y Xu
- Key Laboratory of Forensic Pathology of Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - C Liu
- Key Laboratory of Forensic Pathology of Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - C Xiao
- School of Forensic Science, Southern Medical University, Guangzhou 510515, China
| | - J Zhao
- Key Laboratory of Forensic Pathology of Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - Z H Yu
- School of Forensic Science, Southern Medical University, Guangzhou 510515, China
| | - X Y Yang
- Key Laboratory of Forensic Pathology of Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - Y Li
- Key Laboratory of Forensic Pathology of Ministry of Public Security, Guangzhou Forensic Science Institute, Guangzhou 510442, China
| | - L H Wan
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chong-qing 400016, China
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Xu QY, Ding DK, Luo ZY, Zhang SS, Yan XM, Wang HX, Wang LL, Zhao G, Wang L, Zhang Q. [A case of neonatal mesenteric Kaposiform hemangioendothelioma with Kasabach-Merritt phenomenon]. Zhonghua Er Ke Za Zhi 2021; 59:139-141. [PMID: 33548963 DOI: 10.3760/cma.j.cn112140-20200820-00813] [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: 11/05/2022]
Affiliation(s)
- Q Y Xu
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - D K Ding
- Department of Pediatric Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Z Y Luo
- Department of Pathology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - S S Zhang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - X M Yan
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - H X Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - L L Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - G Zhao
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - L Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Q Zhang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Xu QY, Jin YH, Zheng XY, Yang LL, Li XL, Zhang HY, Wang MS. [Phenotypic and genetic analysis of a pedigree with inherited antithrombin deficiency]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:589-592. [PMID: 32810967 PMCID: PMC7449768 DOI: 10.3760/cma.j.issn.0253-2727.2020.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Q Y Xu
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Y H Jin
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - X Y Zheng
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - L L Yang
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - X L Li
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - H Y Zhang
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - M S Wang
- Center of Laboratory Medcine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Huang LP, Wang F, Dai YY, Xu QY, Zhang JX, Zhu QX. [Effect of complement C5a on the expression of MCP-1 and NGAL in immune kidney injury of trichloroethylene sensitized mice]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:161-167. [PMID: 32306687 DOI: 10.3760/cma.j.cn121094-20190717-00310] [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 explore the possible role of C5a in the pathogenesis of renal injury in TCE- sensitized mice, to analyze the impact of expression of neutrophil gelatinase-associated lipocalin (NGAL) and monocyte chemotactic protein-1 (MCP-1) in the presence or absence of C5a receptor antagonist (C5aRA) pretreatment. Methods: A total of 50 female specific pathogens free(SPF) BALB/c mice were randomly divided into blank control group (n=5) , solvent control group (n=5) , TCE group (n=20) , and TCE+C5aRA group (n= 20) . After one week for adaptive feeding, a mouse model of TCE-induced skin sensitization was established by treating with 50% TCE and 30% TCE in turn. The mice in solvent control group accept same reagents without TCE and the mice in blank control group underwent nothing. In TCE +C5aRA group, except for the TCE solution treatment, mice were intraperitoneally injected with 0.5 mg/kg C5aRA solution at the time of challenge. And the skin erythema and edema reaction were scored 24 h after the last challenge. The mice were divided into sensitization positive group and sensitization negative group according to the scoring result. The mice were aseptically sacrificed 72 h after the last challenge to obtain the kidneys. The structural damage of kidney was observed after histopathological staining. The levels of NGAL and MCP-1 mRNA and proteins were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemistry (IHC) , respectively. Results: The sensitization rate of mice in TCE group and TCE+C5aRA group was 45.0% (9/20) and 40.0% (8/20) , respectively. No skin lesions was found in the mice of blank control group and solvent control group. The results of histopathological staining showed that the TCE sensitization positive mice showed renal tubular dilatation, vacuolar degeneration of renal tubular epithelial cells, and infiltration of interstitial cells. The pathological damage of the kidney in TCE sensitization positive group was mild, and no inflammatory cell infiltration was seen. The data of qRT-PCR showed that the expression levels of NGAL and MCP-1 mRNA in the TCE sensitization positive group were significantly increased than in solvent control group and TCE sensitization negative group (P<0.05) , while the levels of NGAL and MCP-1 mRNA in TCE+C5aRA sensitization positive group were decreased than TCE sensitization positive group (P <0.05) . The results of IHC showed that the expression levels of NGAL and MCP-1 in TCE protein sensitization positive group were significantly higher than those in solvent control group and TCE sensitization negative group (P<0.05) . After C5aRA pretreatment, the expression levels of NGAL and MCP-1 protein were decreased than the mice in TCE sensitization positive group (P<0.05) . Conclusion: The regulation of C5a on the expression of MCP-1 and NGAL may participate in TCE- induced mice kidney damage, and pharmacological inhibition of C5a seems to be an effective way to protect the kidney injury in TCE-sensitized mice.
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Affiliation(s)
- L P Huang
- Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - F Wang
- Institute of Dermatology, the First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Y Y Dai
- Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Q Y Xu
- Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - J X Zhang
- Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Q X Zhu
- Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei 230032, China; Institute of Dermatology, the First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
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21
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Zhao J, Luo YZ, Wang YZ, Xiao C, Shi H, Hu SL, Kang XD, Xu QY, Cheng JD, Liu C. Application of Quantitative Analysis of Diatoms in Lung Tissue for the Diagnosis of Drowning of Experimental Animals. Fa Yi Xue Za Zhi 2019; 35:706-709. [PMID: 31970958 DOI: 10.12116/j.issn.1004-5619.2019.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Indexed: 11/30/2022]
Abstract
Abstract Objective To discuss the application value of diatom examination in lung tissue for the forensic diagnosis of drowning. Methods The experimental animals were divided randomly into drowning, postmortem submergence and dying on land group. Diatoms in lung tissue and drowning fluid were analyzed quantitatively by microwave digestion-vacuum filtration-automated scanning electron microscopy diatom examination method. The ratios of content of diatoms in lung tissue and drowning fluid (CL/CD ratio) were recorded. Results The CL/CD ratios of experimental rabbits in the drowning group (5.82±3.50) were much higher than that of postmortem submergence group (0.47±0.35); the CL/CD ratios of different parts of the lung lobes of experimental pigs in the drowning group were higher than that of postmortem submergence group (P<0.05); in seawater, brackish water, river fresh water and lake fresh water, the CL/CD ratios of experimental pigs in the drowning group were higher than that of postmortem submergence group (P<0.05). In animal experiments, all the cases with CL/CD ratio >1.6 were from drowning group. Conclusion CL/CD ratio is an indicator with good application prospects in the diagnosis of drowning.
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Affiliation(s)
- J Zhao
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
| | - Y Z Luo
- Shiyan Public Security Bureau, Shiyan 442000, Hubei Province, China
| | - Y Z Wang
- Guangdong Jiangmen Chinese Medical College, Jiangmen 529000, Guangdong Province, China
| | - C Xiao
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
| | - H Shi
- Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
| | - S L Hu
- Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
| | - X D Kang
- Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
| | - Q Y Xu
- Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
| | - J D Cheng
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - C Liu
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Forensic Pathology, Institute of Guangzhou Forensic Science, Ministry of Public Security, PRC, Guangzhou 510030, China
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22
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Zhao J, Xu LW, Kang XD, Shi H, Liu C, Hu SL, Yang XY, Xu QY, Cheng JD, Ai M. [Research Progress on Determination of Drowning Site]. Fa Yi Xue Za Zhi 2018; 34:55-59. [PMID: 29577706 DOI: 10.3969/j.issn.1004-5619.2018.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Indexed: 11/18/2022]
Abstract
The bodies found in water are one of the most common types in forensic practice. The discovery site of the body is often not the drowning site. However, the determination of drowning site is vital for the identification of victim. Inorganic particles and planktons, such as granular impurities, diatoms and bacteria, are valuable markers for the diagnosis of drowning. By comparing the granular impurities and planktons in tissues and suspicious drowning mediums, the drowning site can be concluded based on their similarity of types and distribution, which has practical applied value. In this paper, the research progress on determination of drowning site is summarized to provide reference for the peers.
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Affiliation(s)
- J Zhao
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - L W Xu
- Yanping Branch of Nanping Public Security Bureau, Nanping 353000, China; 4. Forensic Science Centre of WASTON, Guangzhou 510610, China
| | - X D Kang
- Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - H Shi
- Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - C Liu
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - S L Hu
- Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - X Y Yang
- Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - Q Y Xu
- Key Laboratory of Forensic Pathology, Ministry of Public Security, PRC, Guangzhou Forensic Science Institute, Guangzhou 510030, China
| | - J D Cheng
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - M Ai
- Forensic Science Centre of WASTON, Guangzhou 510610, China)
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Guo LC, Liu XC, Xu QY, Yiu YS, Cai Y, Jiang GQ, Sun ZY, Luo XY, Huang HT, Zhang Y. [Epidemiological analysis on serogroup Y neisseria meningitidis firstly isolated from patient in Tianjin]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:825-827. [PMID: 27655605 DOI: 10.3760/cma.j.issn.0253-9624.2016.09.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L C Guo
- Department of National Immunization Program, Xiqing Center for Disease Control and Prevention, Tianjin 300112, China
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Mai BS, Xu QY, Liu C, Zhao J, Han YL. [Diagnosis of drowning by detecting gyrB and 16S rRNA genes of Aeromonas hydrophila using PCR-capillary electrophoresis]. Nan Fang Yi Ke Da Xue Xue Bao 2016; 36:1550-1554. [PMID: 27881349] [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: 06/06/2023]
Abstract
OBJECTIVE To establish a method for diagnosis of freshwater drowning by amplifying gyrB and 16S rRNA genes of Aeromonas hydrophila using PCR coupled with capillary electrophoresis (CE). METHODS DNA samples were extracted from human, 18 planktons (including Candida albicans, Aeromonas hydrophila, and 16 species of algae), and 30 cases of tissue samples (including the lung, liver, and kidney, all examined with microwave digestion-vacuum filtration-automated scanning electron microscopy) from human cadavers, including 28 freshwater drowning victims and 2 with natural death. The DNA samples were amplified with the primer AH (for gyrB gene) and primer Ah (for 16S rRNA gene), and the products were analyzed with CE. RESULTS PCR amplification followed by CE yielded negative results for DNA of human, Candida albicans and 16 species of algae, whereas a positive result was found for Aeromonas hydrophila DNA with PCR products of 195 bp (with primer AH) and 350 bp (with primer Ah). In the 28 drowning cases, the detection rates of Aeromonas hydrophila using primer AH were 96.4% in the lung tissue, 71.4% in the liver tissue, and 60.7% in the kidney, as compared with the rates of 75.0%, 42.9%, and 32.1% using primer Ah, respectively. The positive rates for Aeromonas hydrophila in the organs of the drowning victims were 82.1% and 53.6% with primer AH and primer Ah, respectively. The detection showed negative results in the 2 cases of natural deaths. The two primers produced significantly different detection rates of Aeromonas hydrophila (P<0.05). CONCLUSION PCR coupled with CE for detecting gyrB gene of Aeromonas hydrophila has a high sensitivity in assisting a diagnosis of freshwater drowning. Detection of both the gyrB gene and 16S rRNA gene of Aeromonas hydrophila can yield more convincing evidence of the diagnosis of freshwater drowning.
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Affiliation(s)
- Bai-Sheng Mai
- College of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.E-mail:
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Sun EC, Huang LP, Xu QY, Wang HX, Xue XM, Lu P, Li WJ, Liu W, Bu ZG, Wu DL. Emergence of a Novel Bluetongue Virus Serotype, China 2014. Transbound Emerg Dis 2016; 63:585-589. [PMID: 27597166 DOI: 10.1111/tbed.12560] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [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: 05/18/2016] [Indexed: 01/10/2023]
Abstract
One hundred and twenty-six blood samples were collected from healthy sheep and goats in Xinjiang, China, during July 2014. Seventy-three samples (57.93%) were bluetongue virus (BTV) serology-positive, and 39 samples (30.95%) were BTV NS1 gene-positive. BTV strain XJ1407 was isolated from the blood of BTV NS1 gene-positive animals and sequenced. Analysis of its genome sequence suggests that XJ1407 is a novel BTV serotype.
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Affiliation(s)
- E C Sun
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - L P Huang
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Q Y Xu
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - H X Wang
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - X M Xue
- The Center for Animal Disease Control of Bayingol Mongol Autonomous Prefecture, Korla, China
| | - P Lu
- The Institute of Animal Health Supervision of Bayingol Mongol Autonomous Prefecture, Korla, China
| | - W J Li
- China Animal Disease Control Center, Beijing, China
| | - W Liu
- China Animal Disease Control Center, Beijing, China
| | - Z G Bu
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - D L Wu
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.
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Ma DH, Xu QY, Liu Y, Zhai QQ, Guo MH. Association between interleukin-10 gene polymorphisms and susceptibility to diabetic nephropathy in a Chinese population. Genet Mol Res 2016; 15:gmr7570. [PMID: 27173343 DOI: 10.4238/gmr.15027570] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, we investigated the association between the interleukin (IL)-10 -592C/A, -819C/T, and -1082G/A genetic variations and susceptibility to diabetic nephropathy in a Chinese population. The IL-10 -592C/A, -819C/T, and -1082G/A polymorphisms were genotyped in diabetic nephropathy patient and control samples by polymerase chain reaction-restriction fragment length polymorphism. The results were then statistically analyzed using SPSS 17.0. The results of the χ(2) test revealed a significant difference in the frequencies of the GG, GA, and AA genotypes of IL-10 -1082G/A between patients with diabetic nephropathy and control subjects (χ(2) = 10.03, P = 0.007). Unconditional logistic regression analysis revealed that the AA genotype of IL-10 -1082G/A significantly increased the susceptibility to diabetic nephropathy [adjusted odds ratio (OR) = 2.52, 95% confidence interval (CI) = 1.31-4.82] compared to the wild-type genotype. Moreover, the A allele of this polymorphism was associated with an increased risk of diabetic nephropathy compared to the G allele (adjusted OR = 1.51, 95%CI = 1.15-1.99). However, the IL-10 -819T/C and -592A/C genetic polymorphisms did not increase the risk of diabetic nephropathy. In conclusion, the IL-10 -1082G/A polymorphism was found to be correlated with the development of diabetic nephropathy.
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Affiliation(s)
- D H Ma
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
| | - Q Y Xu
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
| | - Y Liu
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
| | - Q Q Zhai
- Department of Endocrinology & Metabolism, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
| | - M H Guo
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
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Liu J, Yan F, Ma X, Guo HL, Tang YL, Rakofsky JJ, Wu XM, Li XQ, Zhu H, Guo XB, Yang Y, Li P, Cao XD, Li HY, Li ZB, Wang P, Xu QY. Perceptions of public attitudes towards persons with mental illness in Beijing, China: results from a representative survey. Soc Psychiatry Psychiatr Epidemiol 2016; 51:443-53. [PMID: 26510417 DOI: 10.1007/s00127-015-1125-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 09/21/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Many studies have examined the general public's attitudes towards people with mental illness, but such studies are scarce in China. This study examined the perceptions of the Beijing population regarding their society's prevalent attitudes towards people with mental illness. METHODS A total of 5000 individuals aged 18 or above living in Beijing were selected using a multistage, stratified, cluster and random sampling method. This was followed by a face-to-face interview which used a standardized questionnaire asking about societal attitudes towards individuals with mental illness. RESULTS 4602 out of 5000 eligible individuals met the inclusion criteria and participated in the interview. 4596 questionnaires were deemed valid and included in the analyses. A large proportion of respondents believed that most individuals within their society held negative attitudes and had a strong desire to distance themselves from people with mental illness. Respondents aged 60 or older, who lived farther to downtown Beijing, or with higher education tended to believe that most individuals have relatively positive and tolerant attitudes towards people with mental illness. CONCLUSIONS Many people in Beijing perceive that most members of their society have negative beliefs towards people with mental illness. Further efforts are needed to determine if these perceptions are accurate and to reduce the stigma that is reinforced by these perceptions.
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Affiliation(s)
- J Liu
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - F Yan
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - X Ma
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China.
| | - H L Guo
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - Y L Tang
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA, USA
| | - J J Rakofsky
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA, USA
| | - X M Wu
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - X Q Li
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - H Zhu
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - X B Guo
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - Y Yang
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - P Li
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - X D Cao
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - H Y Li
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - Z B Li
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - P Wang
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
| | - Q Y Xu
- Beijing Anding Hospital, Capital Medical University, No. 5 Ankang Lane, Dewai Avenue, Xicheng District, Beijing, 100088, China
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Huang EW, Peng LY, Zheng JX, Wang D, Xu QY, Huang L, Wu QP, Tang SB, Luo B, Liu SP, Liu XS, Li ZH, Quan L, Li Y, Shi H, Lv GL, Zhao J, Cheng JD, Liu C. Common Variants in Promoter of ADTRP Associate with Early-Onset Coronary Artery Disease in a Southern Han Chinese Population. PLoS One 2015; 10:e0137547. [PMID: 26375920 PMCID: PMC4574160 DOI: 10.1371/journal.pone.0137547] [Citation(s) in RCA: 11] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 08/18/2015] [Indexed: 01/03/2023] Open
Abstract
The first genome-wide association study for coronary artery disease (CAD) in the Han Chinese population, we reported recently, had identified rs6903956 in gene ADTRP on chromosome 6p24.1 as a novel susceptibility locus for CAD. The risk allele of rs6903956 was associated with decreased mRNA expression of ADTRP. To further study the correlation of ADTRP expression and CAD, in this study we evaluated the associations of eight common variants in the expression-regulating regions of ADTRP with CAD in the Southern Han Chinese population. Rs169790 in 3’UTR, rs2076189 in 5’UTR, four SNPs (rs2076188, rs7753407, rs11966356 and rs1018383) in promoter, and two SNPs (rs3734273, rs80355771) in the last intron of ADTRP were genotyped in 1716 CAD patients and 1572 controls. The correlations between these loci and total or early-onset CAD were investigated. None of these loci was discovered to associate with total CAD (P > 0.05). However, with early-onset CAD, significant both allelic and genotypic associations of rs7753407, rs11966356 and rs1018383 were identified, after adjustment for risk factors of age, gender, hypertension, diabetes, lipid profiles and smoking (adjusted P < 0.05). A haplotype AGCG (constructed by rs2076188, rs7753407, rs11966356 and rs1018383) was identified to protect subjects from early-onset CAD (OR = 0.332, 95% CI = 0.105–0.879, adjusted P = 0.010). Real-time quantitative reverse transcription polymerase chain reaction assay showed that the risk alleles of the associated loci were significantly associated with decreased expression of ADTRP mRNA. Moreover, the average level of ADTRP mRNA expression in early-onset CAD cases was significantly lower than that in controls. Our results provide new evidence supporting the association of ADTRP with the pathogenesis of early-onset CAD.
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Affiliation(s)
- Er-Wen Huang
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - Long-Yun Peng
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jin-Xiang Zheng
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Dan Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qu-Yi Xu
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - Lei Huang
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Qiu-Ping Wu
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shuang-Bo Tang
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Bin Luo
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shui-Ping Liu
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiao-Shan Liu
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhao-Hui Li
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Li Quan
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yue Li
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - He Shi
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - Guo-Li Lv
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - Jian Zhao
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
| | - Jian-Ding Cheng
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
- * E-mail: (CL); (JDC)
| | - Chao Liu
- Guangzhou Forensic Science Institute, Guangzhou, Guangdong, China
- * E-mail: (CL); (JDC)
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Li P, Xu QY, Chen L, Liu C, Zhao J, Wang YZ, Yu ZL, Hu SL, Wang HJ. [Value of specific 16S rDNA fragment of algae in diagnosis of drowning: an experiment with rabbits]. Nan Fang Yi Ke Da Xue Xue Bao 2015; 35:1215-1218. [PMID: 26277526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To establish a method for amplifying specific 16S rDNA fragment of algae related with drowning and test its value in drowning diagnosis. METHODS Thirty-five rabbits were randomly divided into 3 the drowning group (n=15), postmortem water immersion group (n=15, subjected to air embolism before seawater immersion), and control group(n=5, with air embolism only). Twenty samples of the liver tissues from human corpses found in water were also used, including 14 diatom-positive and 6 diatom-negative samples identified by microwave digestion-vacuum filtration-automated scanning electron microscopy (MD-VF-Auto SEM). Seven known species of algae served as the control algae (Melosira sp, Nitzschia sp, Synedra sp, Navicula sp, Microcystis sp, Cyclotella meneghiniana, and Chlorella sp). The total DNA was extracted from the tissues and algae to amplify the specific fragment of algae followed by 8% polyacrylamide gelelectrophoresis and sliver-staining. RESULTS In the drowning group, algae was detected in the lungs (100%), liver (86%), and kidney (86%); algae was detected in the lungs in 2 rabbits in the postmortem group (13%) and none in the control group. The positivity rates of algae were significantly higher in the drowning group than in the postmortem group (P<0.05). Of the 20 tissue samples from human corps found in water, 15 were found positive for algae, including sample that had been identified as diatom-negative by MD-VF-Auto SEM. All the 7 control algae samples yielded positive results in PCR. CONCLUSIONS The PCR-based method has a high sensitivity in algae detection for drowning diagnosis and allows simultaneous detection of multiple algae species related with drowning.
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Affiliation(s)
- Peng Li
- Faculty of Forensic Medicine, Southern Medical University, Guangzhou 510515, China. E-mail:
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Xu QY, Wang CA, Zhao ZG, Luo L. Effects of Replacement of Fish Meal by Soy Protein Isolate on the Growth, Digestive Enzyme Activity and Serum Biochemical Parameters for Juvenile Amur Sturgeon (Acipenser schrenckii). Asian-Australas J Anim Sci 2014; 25:1588-94. [PMID: 25049521 PMCID: PMC4093030 DOI: 10.5713/ajas.2012.12192] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 07/31/2012] [Accepted: 06/13/2012] [Indexed: 11/27/2022]
Abstract
An 8-wk experiment was conducted to evaluate the effect of replacing fish meal (FM) with soy protein isolate (SPI) on the growth, digestive enzyme activity and serum biochemical parameters of juvenile Amur sturgeon (Acipenser schrenckii). SPI was used to replace 0, 25, 50, 62.5, 75, 87.5, 100% of dietary FM and 100% replacement supplemented crystalline amino acid. Healthy sturgeon with an average initial weight of 26.38±0.24 g were randomly assigned to 24 aquaria (8 treatments with triplicates each) at an initial stocking density of 11 fish per aquarium and cultured for 8 wks. The results showed that 75.00% or more substitution resulted in a poor weight gain rate, feed conversion ratio and survival rate compared to that of fish fed the control diet (p<0.05), whereas no significant differences were observed between diets of 25.00% to 62.50% substitution. Protease, lipase and amylase activity in foregut, mid-gut and hindgut were significantly (p<0.05) decreased by diets where SPI replacement levels were 62.50% or more. Levels of serum total protein (TP) and globulin decreased significantly from 21.03, 10.34 to 14.05, 5.63 g/L with the increasing dietary SPI (p<0.05), but alkaline phosphatase activity significantly increased (p<0.05). In addition, supplemental crystalline amino acid in the FM absence diet did not improve growth performance, intestine digestive enzyme activities and serum biochemical parameters. In conclusion, the results from this study showed adverse effects of inclusion of SPI in diets on growth performance, feed utilization and serum biochemical parameters in juvenile Amur sturgeon. Based on WGR and replacement ratio presented in this report, a 57.64% replacement level was recommended.
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Yang XK, Yang YD, Tang SQ, XU L, Yang GH, Xu QY, Tang H, Wu JJ. Inhibitory Effect of Polysaccharides from Scutellaria barbata D. Don on Invasion and Metastasis of 95-D Cells Lines via Regulation of C-MET and E-CAD Expressions. TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i4.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Xu QY, Yin GW, Chen SX, Jiang F, Bai XJ, Wu JD. Fluoroscopically guided nose tube drainage of mediastinal abscesses in post-operative gastro-oesophageal anastomotic leakage. Br J Radiol 2012; 85:1477-81. [PMID: 22806622 DOI: 10.1259/bjr/53905073] [Citation(s) in RCA: 4] [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] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim of this study was to retrospectively evaluate the technical success rates and clinical effectiveness of fluoroscopically guided nose tube drainage of mediastinal abscesses and a nasojejunum feeding tube in post-operative gastro-oesophageal anastomotic leakage (GEAL). METHODS From January 2006 to June 2011, 18 cases of post-operative GEAL with mediastinal abscesses after oesophagectomy with intrathoracic oesophagogastric anastomotic procedures for oesophageal and cardiac carcinoma were treated by insertion of a nose drainage tube and nasojejunum feeding tube under fluoroscopic guidance. We evaluated the feasibility of two-tube insertion to facilitate leakage site closure and complete resolution of the abscess, and the patients' nutritional benefit was also evaluated by checking the serum albumin level between pre- and post-enteral feeding via the feeding tube. RESULTS The two tubes were placed successfully under fluoroscopic guidance in 18 patients (100%). The procedure time for two-tube insertion ranged from 20 to 40 min (mean 30 min). 17 patients (94%) achieved leakage site closure after two-tube insertion and had a good tolerance of two tubes in the nasal cavity. The serum albumin level was significant, increased from pre-enteral feeding (2.49 ± 0.42 g dl(-1)) to the post-enteral feeding (3.58 ± 0.47 g dl(-1)) via the feeding tube (p<0.001). The duration of follow-up ranged from 1 to 49 months (mean 19 months). CONCLUSION The insertion of nose tube drainage and a nasojejunum feeding tube under fluoroscopic guidance is safe, and it provides effective relief from mediastinal abscesses in GEAL after oesophagectomy. Moreover, our findings indicate that two-tube insertion may be used as a selective procedure to treat mediastinal abscesses in post-operative GEAL. Advances in knowledge Directive drainage of mediastinal abscesses in post-operative GEAL may be an effective treatment.
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Affiliation(s)
- Q Y Xu
- Department of Interventional Radiology, Cancer Hospital of Jiangsu Province, Cancer Institution of Jiangsu Province, Nanjing, China
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Yang D, Liu C, Xu QY, Hu HY, Liu H. [DNA typing of minimal oral epithelial cell samples]. Fa Yi Xue Za Zhi 2008; 24:126-128. [PMID: 18605044] [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: 05/26/2023]
Abstract
OBJECTIVE To seek simple and cost-effective extraction technique to improve multiplex STR amplification from minimal oral epithelial cell samples. METHODS One hundred DNA samples of oral epithelial cells extracted by mini system Chelex-100 method were quantitated by ABI 7500 Real Time System and were then typed with Identifiler system in ABI 3130 Genetic Analyzer. RESULTS The DNA contents of different categories of samples were as followings: suck pipes (0.72-116.78 ng), cup edges (2.15-142.5 ng), mouths of drink bottle (1-34.65 ng), chopsticks (3.35-26.6 ng), fruit cores (0.294-21.4 ng), and poultry bones (0.88-5.88 ng). The mean successful typing rate for gender and more than 9 STR loci was about 59.38%. Except the addition or no addition of proteinase K to the samples, all other factors-C users' variation, sample extraction methods, and qualities and properties of the samples had considerable effects on the contents of extracted DNA. CONCLUSION Successful STR typing can be achieved in about 60% minimal oral epithelial cell DNA samples extracted by mini Chelex system.
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Affiliation(s)
- Dian Yang
- Institute of Gene Engineering, Southern Medical University, Guangzhou 510515, China
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Wei YT, Tian WM, Yu X, Cui FZ, Hou SP, Xu QY, Lee IS. Hyaluronic acid hydrogels with IKVAV peptides for tissue repair and axonal regeneration in an injured rat brain. Biomed Mater 2007; 2:S142-6. [DOI: 10.1088/1748-6041/2/3/s11] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ma J, Cui FZ, Liu BF, Xu QY. Atomic force and confocal microscopy for the study of cortical cells cultured on silicon wafers. J Mater Sci Mater Med 2007; 18:851-6. [PMID: 17206523 DOI: 10.1007/s10856-006-0071-4] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2005] [Accepted: 01/17/2006] [Indexed: 05/13/2023]
Abstract
The primary cortical cells were selected as a model to study the adherence and neural network development on chemically roughened silicon substrates without any coatings using confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). The silicon substrates have a nano-range roughness (RMS) achieved by chemical etching using hydrofluoric (HF) acid. After 7 days of culturing, the neurons were observed to connect together and form dense neural networks. Furthermore, AFM results revealed that some porous structures at a few micrometer range existed between the neuron cells and the silicon substrates. It is suggested that the porous structures are made of extracellular matrix (ECM) components and play an important role in the neuronal adhesion and neurite outgrowth on the inert silicon wafers.
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Affiliation(s)
- J Ma
- Department of Material Science and Engineering, Tsinghua University, Beijing, PR China
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Cui FZ, Tian WM, Hou SP, Xu QY, Lee IS. Hyaluronic acid hydrogel immobilized with RGD peptides for brain tissue engineering. J Mater Sci Mater Med 2006; 17:1393-401. [PMID: 17143772 DOI: 10.1007/s10856-006-0615-7] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2004] [Accepted: 10/21/2005] [Indexed: 05/12/2023]
Abstract
In this paper, hyaluronic acid hydrogels with open porous structure have been developed for scaffold of brain tissue engineering. A short peptide sequence of arginine-glycine-aspartic acid (RGD) was immobilized on the backbone of the hydrogels. Both unmodified hydrogels and those modified with RGD were implanted into the defects of cortex in rats and evaluated for their ability to improve tissue reconstruction. After 6 and 12 weeks, sections of brains were processed for DAB and Glees staining. They were also labeled with GFAP and ED1 antibodies, and observed under the SEM for ultrastructral examination. After implanting into the lesion of cortex, the porous hydrogels functioned as a scaffold to support cells infiltration and angiogenesis, simultaneously inhibiting the formation of glial scar. In addition, HA hydrogels modified with RGD were able to promote neurites extension. Our experiments showed that the hyaluronic acid-RGD hydrogel provided a structural, three-dimensional continuity across the defect and favoured reorganization of local wound-repair cells, angiogenesis and axonal growth into the hydrogel scaffold, while there was little evidence of axons regeneration in unmodified hydrogel.
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Affiliation(s)
- F Z Cui
- Biomaterials Laboratory, Department of Materials Science & Engineering, Tsinghua University, Beijing 100084, China.
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37
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Liu BF, Ma J, Xu QY, Cui FZ. Regulation of charged groups and laminin patterns for selective neuronal adhesion. Colloids Surf B Biointerfaces 2006; 53:175-8. [PMID: 17046215 DOI: 10.1016/j.colsurfb.2006.08.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2006] [Accepted: 08/28/2006] [Indexed: 11/16/2022]
Abstract
Primary neuronal cultures on substrates patterned with extracellular matrix proteins such as laminin have yielded much information regarding the physiological characteristics of neuronal cells in vitro. Surface charge also influences neuronal adherence, and a positive charge can have stimulatory effects. The attraction between laminin patterns and polycation films are of interest in the study of neuronal adhesion. We cultured primary hippocampal neurons on poly(ethylenimine) (PEI) films with laminin grids and evaluated their viability and morphology by means of fluorescent microscopy after 5-7 days. The results showed that the neurons did not form networks on the laminin grids. It is inferred that the PEI films were more favourable for neuronal adhesion than the laminin grid.
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Affiliation(s)
- B F Liu
- Beijing Institute for Neuroscience, Capital Medical University, Beijing center for Neural Regeneration & Repair, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing 100069, PR China
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Tian WM, Hou SP, Ma J, Zhang CL, Xu QY, Lee IS, Li HD, Spector M, Cui FZ. Hyaluronic acid-poly-D-lysine-based three-dimensional hydrogel for traumatic brain injury. ACTA ACUST UNITED AC 2005; 11:513-25. [PMID: 15869430 DOI: 10.1089/ten.2005.11.513] [Citation(s) in RCA: 168] [Impact Index Per Article: 8.8] [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: 11/12/2022]
Abstract
Brain tissue engineering in the postinjury brain represents a promising option for cellular replacement and rescue, providing a cell scaffold for either transplanted or resident cells. In this article, a hyaluronic acid (HA)-poly-D-lysine (PDL) copolymer hydrogel with an open porous structure and viscoelastic properties similar to neural tissue has been developed for brain tissue engineering. The chemicophysical properties of the hydrogel with HA:PDL ratios of 10:1, 5:1, and 4:1 were investigated by scanning electron microscopy (SEM) and X-ray photoelectron spectrometry. Neural cells cultured in the hydrogel were studied by phase-contrast microscope and SEM. The incorporation of PDL peptides into the HA-PDL hydrogel allowed for the modulation of neuronal cell adhesion and neural network formation. Macrophages and multinucleated foreign body giant cells found at the site of implantation of the hydrogel in the rat brain within the first weeks postimplantation decreased in numbers after 6 weeks, consistent with the host response to inert implants in numerous tissues. Of importance was the infiltration of the hydrogel by glial fibrillary acidic protein-positive cells-reactive astrocytes-by immunohistochemistry and the contiguity between the hydrogel and the surrounding tissue demonstrated by SEM. These findings indicated the compatibility of this hydrogel with brain tissue. Collectively, the results demonstrate the promise of an HA-PDL hydrogel as a scaffold material for the repair of defects in the brain.
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Affiliation(s)
- W M Tian
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing, China
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Ma J, Liu BF, Xu QY, Cui FZ. AFM study of hippocampal cells cultured on silicon wafers with nano-scale surface topograph. Colloids Surf B Biointerfaces 2005; 44:152-7. [PMID: 16054346 DOI: 10.1016/j.colsurfb.2005.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 03/20/2005] [Revised: 05/19/2005] [Accepted: 06/18/2005] [Indexed: 11/21/2022]
Abstract
The rat hippocampal cells were selected as model to study the interaction between the neural cells and silicon substrates using atomic force microscopy (AFM). The hippocampal cells show tight adherence on silicon wafers with nano-scale surface topograph. The lateral friction force investigated by AFM shows significant increase on the boundary around the cellular body. It is considered to relate to the cytoskeleton and cellular secretions. After ultrasonic wash in ethanol and acetone step by step, the surface of silicon wafers was observed by AFM sequentially. We have found that the culture leftovers form tight porous networks and a monolayer on the silicon wafers. It is concluded that the leftovers overspreading on the silicon substrates are the base of cell adherence on such smooth inert surfaces.
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Affiliation(s)
- J Ma
- Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China
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40
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Tian WM, Zhang CL, Hou SP, Yu X, Cui FZ, Xu QY, Sheng SL, Cui H, Li HD. Hyaluronic acid hydrogel as Nogo-66 receptor antibody delivery system for the repairing of injured rat brain: in vitro. J Control Release 2005; 102:13-22. [PMID: 15653130 DOI: 10.1016/j.jconrel.2004.09.025] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2003] [Accepted: 09/23/2004] [Indexed: 10/26/2022]
Abstract
Nogo-66 and NgR are important receptors inhibiting neuronal regeneration and therefore are targets for treating CNS injury. Antagonists of this receptor including blocking antibodies are potential therapeutic agents for CNS axonal injuries such as spinal cord and brain trauma. A new antibody (IgG) releasing system has been developed by covalently attaching IgG to the biodegradable hyaluronic acid (HA) hydrogel via the hydrolytically unstable hydrazone linkage, aiming to deliver the antibody of CNS regeneration inhibitors to the injured brain. In this paper we describe the synthesis, physico-chemical characteristics and test results of biological activity of antibody released from hyluronic acid hydrogel. To form the conjugates the antibody is attached to the polymer backbone using a condensation reaction between aldehyde group of the antibody and hydrazide group of the HA hydrogel. Furthermore, pH sensitive linkage-hydrozone has been formed between hydrogel and antibody. The amount of conjugated antibodies can reach 135 microg antibody/mg hydrogel in the dry state. At low pH, the antibodies released quite fast. However, the antibodies released much slower in neutral and alkaline environment. The bioactivity of antibody released from hydrogel was retained as demonstrated by indirect immunofluorescence technique.
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Affiliation(s)
- W M Tian
- Biomaterials Laboratory, Department of Materials Science and Engineering Tsinghua University, Beijing 100084, P.R. China
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41
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Xu QY, Wang YG, You B, Du J, Hu A, Zhang Z. Electron holography study on the microstructure of magnetic tunnelling junctions. Ultramicroscopy 2004; 98:297-303. [PMID: 15046810 DOI: 10.1016/j.ultramic.2003.08.022] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2003] [Revised: 06/13/2003] [Indexed: 11/16/2022]
Abstract
Electron holography was applied to study the microstructure evolution of magnetic tunnelling junctions (MTJs) CoFe/AlO(x)/Co annealed at different temperatures. A mean inner potential barrier was observed in the as-deposited MTJ sample, while it was changed to a potential well after a 200 degrees C or a 400 degrees C annealing. It is suggested that the oxygen atoms were redistributed during the annealing, which left metallic atoms acting as acceptors to confine the electrons, leading to the decrease of the potential of the AlO(x) barrier layer. The results suggest that the electron holography may be a useful tool for the study of the microstructure of amorphous materials.
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Affiliation(s)
- Q Y Xu
- Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
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42
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Ye YQ, Xu QY, Li YH. [Two cases of paragonimiasis]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:271. [PMID: 12572039] [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: 02/28/2023]
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Abstract
The adherence and viability of central neural cells (substantia nigra) on a thin layer of SiO(2) on Si wafers with different surface roughness were investigated. Variable roughness of the Si wafer surface was achieved by etching. The nano-scale surface topography was evaluated by atomic force microscopy. The adherence and subsequent viability of the cells on the wafer were examined by scanning electron microscopy (SEM) and fluorescence immunostaining of tyrosine hydroxylase (TH). It is found that the surface roughness significantly affected cell adhesion and viability. Cells survived for over 5 days with normal morphology and expressed neuronal TH when grown on surfaces with an average roughness (Ra) ranging from 20 to 50 nm. However, cell adherence was adversely affected when surfaces with Ra less than 10 nm and rough surfaces with Ra above 70 nm were used as the substrate. Such a simple preparation procedure may provide a suitable interface surface for silicon-based devices and neurones or other living tissues.
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Affiliation(s)
- Y W Fan
- Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, People's Republic of China
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Abstract
A gel with excellent functional properties was prepared successfully using the hydrolysates of globin. In the present study, the structures of intermediate aggregates and gel network were observed directly with an electronic microscope. It was shown clearly that the intermediate aggregates were in a thin rod shape with a length of 130--140 nm, which was in good accordance with the results of the light scattering obtained in a previous study. The diameter of intermediate aggregates was 4--5 nm. Each unit of the intermediate aggregate was composed of beta-chain and peptide beta-1 in a ratio of 1:1. Its molecular weight was 26922 Da, and it had a diameter of 4.1 nm. The thin rod-shaped aggregates were formed with units through the hydrophobic interaction. The length of intermediate aggregate was >30--33 times the diameter. Furthermore, the cross-linked structure formed by peptide alpha-1 and the thin rod-shaped aggregates was also confirmed by the photography of the electronic microscope. These results supported the model proposed in previous papers as proper to depict exactly the formation and structure of the gel network of globin hydrolysates.
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Affiliation(s)
- X Q Liu
- National Food Research Institute, Kannondai 2-1-2, Tsukuba City, Ibaraki 305-0856, Japan.
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Luo XM, Hu YH, Yu J, Wang H, Xu QY, Zhan H. [Effects of tea polyphenols on microcirculation and antioxidation in aircrew]. Space Med Med Eng (Beijing) 1999; 12:338-41. [PMID: 12022177] [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: 02/25/2023]
Abstract
OBJECTIVE To study the effects of tea polyphenols (TP) on bulbi conjunctiva microcirculation (BCM) and antioxidation in aircrew and find out the proper antioxidant for the health protection of aircrew. METHOD Fourty healthy aircrew were divided into TP group (TP 600 mg/d.po) and control group (placebo) randomly. The effects of TP on microcirculation and antioxidation in aircrew were tested after 20 days. RESULT Red blood cell (RBC) superoxide dismutase (SOD) activity and GSH-PX (Whole blood glutathione peroxidase)/MDA (serum malondialdehyde) ratio in TP group were significantly higher than those in control (P<0.01), and serum MDA level was significantly decreased after TP administration (P<0.05). The numbers of capillaries and blood flow in micrangium were significantly increased, RBC aggregation, ischemia area and A (arteriole)/V (venule) ratio were remarkably decreased in TP group (P<0.01). The total integral value of microcirculation in TP group was significantly reduced in comparison with that in the control group. CONCLUSION TP can significantly increase the antioxidative ability of aircrew, decrease the BCM disturbance and improve the microcirculatory function.
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Affiliation(s)
- X M Luo
- East-Lake Sanatorium of Air Force, Wuhan, China
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Abstract
To determine the renal effects of cadmium (Cd) in older animals, we administered subcutaneously a single dose of cadmium, 3.0 mg/kg/BW, to Syrian hamsters aged 16 wk ("young") and 60 wk ("old"). Marked morphologic changes in the kidney and renal dysfunction were observed, especially in the older animals. The concentration of MDA in the renal cortex was significantly increased only in young hamsters treated with cadmium. Concentrations of glutathione (GSH) in the renal cortex were increased in the old hamsters on d 6. Increased levels of renal MDA after cadmium treatment may induce the production of GSH in the kidney thus preventing renal damage. Aging can increase the susceptibility to the renal effects of cadmium.
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Affiliation(s)
- T Shibasaki
- Second Department of Internal medicine, Jikei University School of Medicine, Tokyo, Japan
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47
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Shibasaki T, Xu QY, Ohno I, Ishimoto F, Sakai O. Effect of triethylenepentaminehexaacetic acid on the renal damage in cadmium-treated Syrian hamsters. Biol Trace Elem Res 1995; 50:157-65. [PMID: 8605083 DOI: 10.1007/bf02789418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cadmium (Cd)-induced nephropathy was treated by triethylenepentaminehexaacetic acid (TTHA) in male Syrian hamsters. Hamsters injected three times a week with 3 mg/kg body wt CdCl2 showed proteinuria, urinary N-acetyl-beta-D-inglucosaminidase (NAG), and fractional excretion of sodium (FENa) when compared to saline-injected control. Cd-treated hamsters injected ip with TTHA 10 mg/kg body wt five times a week showed reduction of renal damage, including reductions in urinary protein (from 6.7 +/- 2.2 to 4.3 +/- 0.5 mg/d) and NAG (0.17 +/- 0.06 to 0.04 +/- 0.02 U/d). Urinary excretion of Cd was significantly increased (from 87 +/- 51.3 to 3052 +/- 1485 mg/L) by TTHA administration. Cd concentration in renal cortical tissue was slightly reduced (26.4 +/- 3.0 to 21.8 +/- 2.7 mg/g. protein). Excretion of malondialdehyde (MDA) was increased only in Cd-injected hamsters (to 2.1 +/- 1.6 nM/L), and elevated MDA in renal cortical tissue was not reduced by the administration of TTHA (1041 +/- 105 vs 1104 +/- 358 nM/g protein). Glutathione (GSH) concentration in the renal cortex was significantly elevated after Cd administration and further increased after TTHA administration (5.5 +/- 2.1 to 9.8 +/- 2.0 micrograms/50 mg protein). There were no marked effects on creatinine clearance (Ccr) and hematocrit. Moreover, renal morphological changes were improved significantly by treatment with TTHA. We demonstrated the efficacy of TTHA in the treatment of Cd-induced nephropathy in hamsters. Although the precise mechanism of the TTHA effects on Cd-induced nephropathy has not been elucidated, it might involve GSH reducing the elevated MDA concentration in renal tissue.
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Affiliation(s)
- T Shibasaki
- Second Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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48
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Xu QY, Wang YJ, Zhang LW. [Study of negative pressure drainage fluid and the fluid cellular ingredients after laryngeal carcinoma radical neck dissection]. Zhonghua Hu Li Za Zhi 1995; 30:591-2. [PMID: 8715897] [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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49
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Tang CK, Xu QY. [Effects of neutral oil of Ligusticum sinense Oliv. on anoxia]. Zhongguo Zhong Yao Za Zhi 1992; 17:745-6, 764. [PMID: 1304757] [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: 12/26/2022]
Abstract
The neutral oil at 2.5 and 5.0g/kg P.O. can significantly decrease the oxygen consumption and prolong survival time for mice, increase the ability of tissues to tolerate anoxia and extend survival time under cerebral ischemic anoxia in mice. It can also inhibit the pituitrin-induced depression of S point in rats.
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Affiliation(s)
- C K Tang
- Shaanxi Academy of Traditional Chinese Medicine and Materia Medica, Xian
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50
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Xu QY, Li SL, LeBon TR, Fujita-Yamaguchi Y. Aggregation of IGF-I receptors or insulin receptors and activation of their kinase activity are simultaneously caused by the presence of polycations or K-ras basic peptides. Biochemistry 1991; 30:11811-9. [PMID: 1661148 DOI: 10.1021/bi00115a011] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Several groups including us reported that basic proteins and polycations activate the insulin receptor tyrosine-specific protein kinase (TPK) in vitro. However, some inconsistency has become obvious in the observations. The most intriguing was the brief description by Morrison et al. [(1989) J. Biol. Chem. 264, 9994-10001] that polylysine had no effect on the IGF-I receptor TPK despite its 84% identity to the insulin receptor TPK. In the present study, we used highly purified IGF-I and insulin receptor TPKs in an effort to solve the discrepancies noted in the recent publications and to reveal the mechanism by which polycations stimulate the receptor TPKs. We report that the IGF-I receptor TPK is stimulated by polycations and basic proteins in a manner similar to their effects on the insulin receptor TPK. When effects of polylysine and polyarginine on both receptor TPKs were closely compared, subtle qualitative differences were found: Polylysine stimulated autophosphorylation and exogenous substrate phosphorylation activities of both insulin receptor TPK and IGF-I receptor TPK similarly. In contrast, another polycation, polyarginine, affected both TPKs in a manner quite different from polylysine: Polyarginine stimulated insulin receptor autophosphorylation to a greater extent than polylysine did while it had a very small effect on the IGF-I receptor autophosphorylation as well as the exogenous substrate phosphorylation activities of the two receptor TPKs. We have further extended the studies to include the domains of natural proteins which contain a polylysine-like sequence.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- Q Y Xu
- Department of Molecular Genetics, Beckman Research Institute of the City of Hope, Duarte, California 91010
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