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Liang YJ, Wang H, Zhao PZ, Wang F, Li Q, Xu Y, Wu YX, Zhang DM, He XH. [Analysis of transfusion effect of different platelet matching schemes in patients with platelet transfusion refractoriness]. Zhonghua Yi Xue Za Zhi 2024; 104:865-869. [PMID: 38462363 DOI: 10.3760/cma.j.cn112137-20231204-01281] [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: 03/12/2024]
Abstract
Objective: To analyze the transfusion effect of different platelet matching schemes in patients with platelet transfusion refractoriness (PTR). Methods: A total of 94 patients with PTR received by Taiyuan Blood Center from January to December 2021 were retrospectively analyzed, including 26 males and 68 females, aged 53(34,66) years. Platelet antibody screening was performed by enzyme-linked immunosorbent assay (ELISA). For patients with positive human leukocyte antigen (HLA) class Ⅰ antibodies, Luminex platform liquid chip assay was used to identify the specificity of antibodies, and platelets with missing allelic expression antigen corresponding to their specific antibodies were found in the platelet donor gene database established in our laboratory. For patients with negative class HLA-Ⅰ antibody screening, medium and high-resolution HLA-A and B alleles were genotyped by polymerase chain reaction restriction sequence specific oligonucleotide (PCR-SSO), and the compatible platelets were searched from the platelet donor gene database by HLA cross-reactive group genotype matching scheme or directly selected by serological cross-matching. The PCI compliance rate and total transfusion effective rate of different mismatch site groups and different matching scheme groups were statistically analyzed. Results: Platelet antibody was detected in 39 of 94 PTR patients with a positive rate of 41.5%, and all of them were HLA-Ⅰ antibodies, and 1 case was accompanied by human platelet antigen (HPA) antibody. A total of 134 times of compatible platelets were supplied to 39 patients with HLA-Ⅰ antibody positive by using antibody avoidance matching method. And the total effective rate of transfusion was 97.8% (131/134); The PCI compliance rates of HLA-A antigen mismatch, HLA-B antigen mismatch and HLA-A and B antigen mismatch groups were 81.6% (31/38), 86.5% (32/37) and 78.6% (22/28), respectively. The total effective rate of transfusion was 97.4% (37/38), 94.6% (35/37) and 100% (28/28), respectively, with no statistical significance (all P>0.05). A total of 118 times of compatible platelets were provided by HLA antigen cross-reaction group genotype matching and serological cross-matching, 90 transfusion effects were collected during follow-up, and the total effective rate was 76.7% (69/90). Conclusion: The combination of different platelet matching schemes can improve the PCI compliance rate and the total effective rate of transfusion in PTR patients.
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Affiliation(s)
- Y J Liang
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - H Wang
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - P Z Zhao
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - F Wang
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - Q Li
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - Y Xu
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - Y X Wu
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - D M Zhang
- Laboratory of Blood Transfusion Technology, Taiyuan Blood Center, Taiyuan 030024, China
| | - X H He
- Department of Blood Transfusion, Shanxi Bethune Hospital, Taiyuan 030000, China
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Zhang DM, Sun DY, Gong XG. Angell plot from the potential energy landscape perspective. Phys Rev E 2022; 106:064129. [PMID: 36671189 DOI: 10.1103/physreve.106.064129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 11/22/2022] [Indexed: 12/24/2022]
Abstract
Within the scenario of the potential energy landscape (PEL), a thermodynamic model has been developed to uncover the physics behind the Angell plot. In our model, by separating the barrier distribution in PELs into a Gaussian-like and a power-law form, we obtain a general relationship between the relaxation time and the temperature. The wide range of the experimental data in the Angell plot, as well as the molecular-dynamics data, can be excellently fitted by two characteristic parameters, the effective barrier (ω) and the effective width (σ) of a Gaussian-like distribution. More importantly, the fitted ω and σ^{2} for all glasses are found to have a simple linear relationship within a very narrow band, and fragile and strong glasses are well separated in the ω-σ^{2} plot, which indicates that glassy states appear only in a specific region of the PEL.
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Affiliation(s)
- D M Zhang
- Key Laboratory for Computational Physical Sciences (MOE), Institute of Computational Physics, Fudan University, Shanghai 200433, China
| | - D Y Sun
- Engineering Research Center for Nanophotonics & Advanced Instrument (MOE), School of Physics and Electronic Science, East China Normal University, 200241 Shanghai, China.,Shanghai Qi Zhi Institution, Shanghai 200030, China
| | - X G Gong
- Key Laboratory for Computational Physical Sciences (MOE), Institute of Computational Physics, Fudan University, Shanghai 200433, China.,Shanghai Qi Zhi Institution, Shanghai 200030, China
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Zhang DM, Wang YL, Liu WW, Xu LY, Chen SM. [Establish and application of scoring scale for trial of labor after cesarean section]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:339-345. [PMID: 35658324 DOI: 10.3760/cma.j.cn112141-20220321-00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To establish a scoring scale for trial of labor after cesarean section (TOLAC), to explore the evaluation ability of this scoring scale for vaginal delivery after cesarean section (VBAC), and to improve the success rate of TOLAC. Methods: The delivery information of 661 TOLAC pregnant women admitted to Zhengzhou Central Hospital Affiliated to Zhengzhou University from 2014 to 2017 was retrospectively analyzed, and the TOLAC scoring scale was established by referring to relevant literatures. A prospective cohort study of pregnant women with TOLAC from January 2018 to December 2019 in Zhengzhou Central Hospital was conducted, including 440 pregnant women who were excluded from contraindications in trial labor. According to TOLAC scoring scale, pregnant women were divided into 3 groups, 0-6 group (94 cases), 7-9 group (234 cases) and 10-15 group (112 cases). The success rate of trial labor, failure reasons and incidence of maternal and neonatal complications were compared among the three groups. Results: (1) The overall success rate of TOLAC in 440 pregnant women was 75.0% (330/440). The success rates of 0-6, 7-9 and 10-15 groups were 53.2% (50/94), 76.9% (180/234) and 89.3% (100/112), respectively. The success rate of 10-15 group were significantly higher than those of 0-6 and 7-9 groups (all P<0.05). (2) Among the causes of trial labor failure, there were statistically significant differences between the three groups in terms of threatened uterine rupture and maternal abandonment (all P<0.05). Pairings showed that the incidences of threatened uterine rupture and maternal abandonment in 0-6 group was lower than those in 7-9 and 10-15 groups, and the differences were statistically significant (all P<0.05). (3) Maternal and neonatal complications mainly included postpartum hemorrhage and neonatal asphyxia, but there were no significant difference in the incidence of TOLAC success or failure among the three groups (all P>0.05). There was no uterine rupture in all groups. (4) The main factors affecting TOLAC score of pregnant women in the three groups included natural labor, estimated weight of the fetus at this time, Bishop score of the cervix at admission and gestational age, and the scores of the above indexes in 10-15 group were significantly higher than those in 0-6 group and 7-9 group (all P<0.05). Conclusions: TOLAC scoring scale has more accurate evaluation ability for VBAC, which could improve the success rate of TOLAC and maternal and child safety. The score of 0-6 is not recommended for vaginal trial labor, the score of 7-9 is recommended for vaginal trial labor, and the score of 10-15 is strongly recommended for vaginal trial labor.
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Affiliation(s)
- D M Zhang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450052, China
| | - Y L Wang
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450052, China
| | - W W Liu
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450052, China
| | - L Y Xu
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450052, China
| | - S M Chen
- Department of Obstetrics and Gynecology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450052, China
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Wang FD, Zhou J, Zhang DM, Wang ML, Tao YC, Wu DB, Tang H, Chen EQ. [A study of the effectiveness of nucleos(t)ide analogues in the treatment of HBeAg- positive chronic hepatitis B with normal alanine aminotransferase and high level of HBV DNA]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:389-394. [PMID: 35545563 DOI: 10.3760/cma.j.cn501113-20210705-00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the effectiveness of nucleos(t)ide analogues in the treatment of HBeAg-positive chronic hepatitis B with normal alanine aminotransferase and high level of HBV DNA. Methods: Treatment-naïve chronic hepatitis B patients who were followed up at the Center of Infectious Diseases, West China Hospital of Sichuan University from January 2019 to January 2020 were selected as subjects. Demographic characteristics, the results of laboratory examination before treatment and one year after treatment were retrospectively collected. Patients were divided into tenofovir dipivoxil (TDF) and propofol fumurate tenofovir (TAF) treatment group according to different types of medication. The changes of serum HBV DNA level, HBeAg serological conversion and HBsAg quantitative level were analyzed and compared between the two groups. Results: A total of 38 cases were enrolled. Among them, there were 16 and 22 cases in the TDF and TAF group, respectively. There was no statistically significant difference in demographic characteristics, baseline HBV DNA levels and HBsAg quantitative levels between the two groups. Virological response was achieved in 60.5% (23/38) of patients after one year of antiviral therapy. Serum HBV DNA levels below the lower limit of detection [68.2% (15/22) vs. 50.0% (8/16), P=0.258] and higher HBeAg seroconversion rate [18.2%] (4/22) vs. 6.3% (1/16), P=0.374] was obtained in TAF than TDF group; however, there was no statistically significant differences between the two. Serum HBsAg quantitative level was significantly reduced with TDF and TAF treatment. In addition, alanine aminotransferase elevation was reduced in TAF than TDF treated group. Multivariate logistic regression analysis showed that patient age was an independent predictor of a virological response to antiviral therapy. Conclusion: HBeAg-positive CHB patients with normal alanine aminotransferase, and high HBV DNA level can obtain better curative effect after TDF and TAF treatment.
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Affiliation(s)
- F D Wang
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - J Zhou
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - D M Zhang
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - M L Wang
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Y C Tao
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - D B Wu
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - H Tang
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - E Q Chen
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
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5
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Zhang DM, Zhai CJ, Feng XD, Wang CZ, Qiu JF, Wei JG. [Diagnostic value of combined application of GATA3, SOX10 and p16 in triple negative breast carcinomas]. Zhonghua Yi Xue Za Zhi 2022; 102:735-740. [PMID: 35280018 DOI: 10.3760/cma.j.cn112137-20210621-01395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the expression of GATA3, SOX10, and p16 in triple-negative breast cancer (TNBC) and analyze their significance and correlation with clinicopathology. Methods: The expressions of GATA3, SOX10 and p16 in 53 cases of TNBC and 50 cases of non-TNBC were detected by immunohistochemical staining. Results: GATA3 and SOX10 were positive in 58.5%(31/53) and 75.5%(40/53) of TNBC, respectively. The expression of SOX10 was significantly higher than that in non-TNBC (P<0.05). SOX10 was positive in 17 of the 22 cases that lacked GATA3 expression (77.3%). The expression of p16 was significantly higher in the TNBC, and the co-expression with SOX10 was significantly increased (P<0.05). The sensitivity, specificity, and AUC under the ROC curve of SOX10 were higher than those of GATA3. The sensitivity of SOX10 was higher than that of p16, but the specificity was lower than that of p16. The AUC of SOX10 was higher than that of p16. AUC of combined detection of GATA3 and SOX10, SOX10 and p16 were higher than that of each antibody alone (P<0.05). The expression of GATA3, SOX10, and p16 had no significant correlation with age, tumor size, and lymph node metastasis. The expression of SOX10 and p16 in grade 3 and basal-like TNBC increased significantly, and their co-expression increased. Conclusions: The expressions of SOX10 and p16 in TNBC are significantly increased. SOX10 is a reliable marker for the diagnosis of TNBC and a supplement to GATA3. Whether p16 is a marker related to the prognosis of TNBC remains to be further studied.
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Affiliation(s)
- D M Zhang
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038, China
| | - C J Zhai
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038, China
| | - X D Feng
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038, China
| | - C Z Wang
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038, China
| | - J F Qiu
- Department of Pathology, Shaoxing People's Hospital, Zhejiang 312000, China
| | - J G Wei
- Department of Pathology, Shaoxing People's Hospital, Zhejiang 312000, China
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Zhang DM, Szymanski J, Bergom C, Cuculich PS, Robinson CG, Schwarz JK, Rentschler SL. Leveraging Radiobiology for Arrhythmia Management: A New Treatment Paradigm? Clin Oncol (R Coll Radiol) 2021; 33:723-734. [PMID: 34535357 DOI: 10.1016/j.clon.2021.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 08/04/2021] [Accepted: 09/01/2021] [Indexed: 01/01/2023]
Abstract
Radiation therapy is a well-established approach for safely and non-invasively treating solid tumours and benign diseases with high precision and accuracy. Cardiac radiation therapy has recently emerged as a non-invasive treatment option for the management of refractory ventricular tachycardia. Here we summarise existing clinical and preclinical literature surrounding cardiac radiobiology and discuss how these studies may inform basic and translational research, as well as clinical treatment paradigms in the management of arrhythmias.
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Affiliation(s)
- D M Zhang
- Department of Medicine, Cardiovascular Division, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - J Szymanski
- Department of Radiation Oncology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - C Bergom
- Department of Radiation Oncology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - P S Cuculich
- Department of Medicine, Cardiovascular Division, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA; Department of Radiation Oncology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - C G Robinson
- Department of Medicine, Cardiovascular Division, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA; Department of Radiation Oncology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - J K Schwarz
- Department of Radiation Oncology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA
| | - S L Rentschler
- Department of Medicine, Cardiovascular Division, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA; Department of Biomedical Engineering, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA; Department of Developmental Biology, Washington University in St. Louis, School of Medicine, Saint Louis, Missouri, USA.
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Li XN, Huang Y, Wang W, Jing QL, Zhang CH, Qin PZ, Guan WJ, Gan L, Li YL, Liu WH, Dong H, Miao YT, Fan SJ, Zhang ZB, Zhang DM, Zhong NS. Effectiveness of inactivated SARS-CoV-2 vaccines against the Delta variant infection in Guangzhou: a test-negative case-control real-world study. Emerg Microbes Infect 2021; 10:1751-1759. [PMID: 34396940 PMCID: PMC8425710 DOI: 10.1080/22221751.2021.1969291] [Citation(s) in RCA: 163] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effectiveness of inactivated SARS-CoV-2 vaccines against the Delta variant, which has been associated with greater transmissibility and virulence, remains unclear. We conducted a test-negative case–control study to explore the vaccine effectiveness (VE) in real-world settings. We recruited participants aged 18–59 years who consisted of SARS-CoV-2 test-positive cases (n = 74) and test-negative controls (n = 292) during the outbreak of the Delta variant in May 2021 in Guangzhou city, China. Vaccination status was compared to estimate The VE of SARS-CoV-2 inactivated vaccines. A single dose of inactivated SARS-CoV-2 vaccine yielded the VE of only 13.8%. After adjusting for age and sex, the overall VE for two-dose vaccination was 59.0% (95% confidence interval: 16.0% to 81.6%) against coronavirus disease 2019 (COVID-19) and 70.2% (95% confidence interval: 29.6–89.3%) against moderate COVID-19 and 100% against severe COVID-19 which might be overestimated due to the small sample size. The VE of two-dose vaccination against COVID-19 reached 72.5% among participants aged 40–59 years, and was higher in females than in males against COVID-19 and moderate diseases. While single dose vaccination was not sufficiently protective, the two-dose dosing scheme of the inactivated vaccines was effective against the Delta variant infection in real-world settings, with the estimated efficacy exceeding the World Health Organization minimal threshold of 50%.
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Affiliation(s)
- Xiao-Ning Li
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Yong Huang
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Wen Wang
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Qin-Long Jing
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Chun-Huan Zhang
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Peng-Zhe Qin
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Wei-Jie Guan
- National Centre for Respiratory Medicine, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China.,Department of Thoracic Surgery, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Lin Gan
- School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yi-Lan Li
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Wen-Hui Liu
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Hang Dong
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Yu-Tian Miao
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Shu-Jun Fan
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Zhou-Bin Zhang
- Guangzhou Center for Disease Control and Prevention, Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China
| | - Ding-Mei Zhang
- School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Nan-Shan Zhong
- National Centre for Respiratory Medicine, State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China
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Zhang DM, Zheng Z, Wei JG. [To discuss the diagnostic clues of breast secretory carcinoma based on the frozen diagnosis]. Zhonghua Bing Li Xue Za Zhi 2021; 50:969-972. [PMID: 34344092 DOI: 10.3760/cma.j.cn112151-20201227-00970] [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)
- D M Zhang
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038, China
| | - Z Zheng
- Department of Pathology, Shaoxing People's Hospital of Zhejiang Province, Shaoxing 312000, China
| | - J G Wei
- Department of Pathology, Shaoxing People's Hospital of Zhejiang Province, Shaoxing 312000, China
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Zhang DM, Zheng Z, Wei JG. [Clear cell renal cell carcinoma metastatic to meningioma:report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:411-413. [PMID: 33832009 DOI: 10.3760/cma.j.cn112151-20200708-00542] [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)
- D M Zhang
- Department of Pathology, Fu Xing Hospital, Capital Medical University, Beijing 100038,China
| | - Z Zheng
- Department of Pathology, Shaoxing People's Hospital, Shaoxing 312000, China
| | - J G Wei
- Department of Pathology, Shaoxing People's Hospital, Shaoxing 312000, China
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Zhang XF, Chen J, Wang PG, Luo SM, Liu NX, Li XM, He XL, Wang Y, Bi XG, Zhang P, Wang Y, Lv ZC, Zhou B, Mai W, Wu H, Hu Y, Wang DR, Luo FW, Xia LG, Lai JJ, Zhang DM, Wang Q, Han G, Wu XW, Ren JA. [Surgical site infection after abdominal surgery in China: a multicenter cross-sectional study]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:1036-1042. [PMID: 33212551 DOI: 10.3760/cma.j.cn.441530-20200810-00470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: Surgical site infection (SSI) can markedly prolong postoperative hospital stay, aggravate the burden on patients and society, even endanger the life of patients. This study aims to investigate the national incidence of SSI following abdominal surgery and to analyze the related risk factors in order to provide reference for the control and prevention of SSI following abdominal surgery. Methods: A multicenter cross-sectional study was conducted. Clinical data of all the adult patients undergoing abdominal surgery in 68 hospitals across the country from June 1 to 30, 2020 were collected, including demographic characteristics, clinical parameters during the perioperative period, and the results of microbial culture of infected incisions. The primary outcome was the incidence of SSI within postoperative 30 days, and the secondary outcomes were ICU stay, postoperative hospital stay, cost of hospitalization and the mortality within postoperative 30-day. Multivariable logistic regression was used to analyze risk factors of SSI after abdominal surgery. Results: A total of 5560 patients undergoing abdominal surgery were included, and 163 cases (2.9%) developed SSI after surgery, including 98 cases (60.1%) with organ/space infections, 19 cases (11.7%) with deep incisional infections, and 46 cases (28.2%) with superficial incisional infections. The results from microbial culture showed that Escherichia coli was the main pathogen of SSI. Multivariate analysis revealed hypertension (OR=1.792, 95% CI: 1.194-2.687, P=0.005), small intestine as surgical site (OR=6.911, 95% CI: 1.846-25.878, P=0.004), surgical duration (OR=1.002, 95% CI: 1.001-1.003, P<0.001), and surgical incision grade (contaminated incision: OR=3.212, 95% CI: 1.495-6.903, P=0.003; Infection incision: OR=11.562, 95%CI: 3.777-35.391, P<0.001) were risk factors for SSI, while laparoscopic or robotic surgery (OR=0.564, 95%CI: 0.376-0.846, P=0.006) and increased preoperative albumin level (OR=0.920, 95%CI: 0.888-0.952, P<0.001) were protective factors for SSI. In addition, as compared to non-SSI patients, the SSI patients had significantly higher rate of ICU stay [26.4% (43/163) vs. 9.5% (514/5397), χ(2)=54.999, P<0.001] and mortality within postoperative 30-day [1.84% (3/163) vs.0.01% (5/5397), χ(2)=33.642, P<0.001], longer ICU stay (median: 0 vs. 0, U=518 414, P<0.001), postoperative hospital stay (median: 17 days vs. 7 days, U=656 386, P<0.001), and total duration of hospitalization (median: 25 days vs. 12 days, U=648 129, P<0.001), and higher hospitalization costs (median: 71 000 yuan vs. 39 000 yuan, U=557 966, P<0.001). Conclusions: The incidence of SSI after abdominal surgery is 2.9%. In order to reduce the incidence of postoperative SSI, hypoproteinemia should be corrected before surgery, laparoscopic or robotic surgery should be selected when feasible, and the operating time should be minimized. More attentions should be paid and nursing should be strengthened for those patients with hypertension, small bowel surgery and seriously contaminated incision during the perioperative period.
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Affiliation(s)
- X F Zhang
- Research Institute of General Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu 210002, China
| | - J Chen
- Research Institute of General Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu 210002, China
| | - P G Wang
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, China
| | - S M Luo
- Department of Comprehensive Surgery, the People's Hospital of Xinjiang Uygur autonomous region, Urumqi, Xinjiang 830001, China
| | - N X Liu
- Department of Pancreatitis Center, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - X M Li
- Department of General Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, China
| | - X L He
- Department of General Surgery, the Second Affiliated Hospital of the Air Force Medical University, Xi'an, Shanxi 710038, China
| | - Y Wang
- Department of General Surgery, Yichang Central People's Hospital, the First College of Clinical Medical Science of Three Gorges University, Yichang, Hubei 443003, China
| | - X G Bi
- Department of Gastrointestinal and pancreatic Surgery, Shanxi Provincial People's Hospital, Taiyuan, Shanxi 030012, China
| | - P Zhang
- Department of Hepatobiliary Surgery, the First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Y Wang
- Department of General Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Z C Lv
- Department of General Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, China
| | - B Zhou
- Department of General Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - W Mai
- Department of Gastrointestinal Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, China
| | - H Wu
- Department of General Surgery, the First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Y Hu
- Department of Gastrointestinal Surgery, Sichuan People's Hospital, Chengdu, Sichuan 610072, China
| | - D R Wang
- Department of Gastrointestinal Surgery, Northern Jiangsu People's Hospital, Yangzhou, Jiangsu 225001, China
| | - F W Luo
- Department of Acute Abdominal Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, China
| | - L G Xia
- Department of Gastrointestinal Surgery, Shenzhen People's Hospital, Shenzhen, Guangdong 518020, China
| | - J J Lai
- Department of Gastrointestinal Surgery, Yuebei people's hospital, Shaoguan, Guangdong 512026, China
| | - D M Zhang
- Department of General Surgery, Baotou Central Hospital, Baotou, Inner Mongolia 014040, China
| | - Q Wang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - G Han
- Department of Gastrointestinal Nutrition and Hernia Surgery, the Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - X W Wu
- Research Institute of General Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu 210002, China
| | - J A Ren
- Research Institute of General Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu 210002, China
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11
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Li Z, Gao JR, Song L, Wang PG, Ren JA, Wu XW, Luo SM, Zeng QJ, Weng YH, Xu XJ, Yuan QZ, Zhao J, Liao NS, Mai W, Wang F, Cao H, Wang SC, Han G, Wang DR, Wang H, Zhang J, Zhang H, Zhang DM, Liao WS, Zhao WW, Li W, Cui P, Chen X, Zhang HY, Yang T, Wang L, Gao YS, Li J, Wu JJ, Zhou W, Lyu ZJ, Fang J. [Risk factors for surgical site infection after emergency abdominal surgery: a multicenter cross-sectional study in China]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:1043-1050. [PMID: 33212552 DOI: 10.3760/cma.j.issn.441530-20200527-00315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Surgical site infection (SSI) is the most common infectious complication after emergency abdominal surgery (EAS). To a large extent, most SSI can be prevented, but there are few relevant studies in China. This study mainly investigated the current situation of SSI occurrence after EAS in China, and further explored risk factors for SSI occurrence. Methods: Multi-center cross-sectional study was conducted. Clinical data of patients undergoing EAS in 33 hospitals across China between May 1, 2019 and June 7, 2019 were prospectively collected, including perioperative data and microbial culture results from infected incisions. The primary outcome was the incidence of SSI after EAS, while the secondary outcomes were postoperative hospital stay, ICU occupancy rate, length of ICU stay, hospitalization cost, and mortality within postoperative 30 days. Univariate and multivariate logistic regression models were used to analyze the risk factors of SSI after EAS. Results: A total of 660 EAS patients aged (47.9±18.3) years were enrolled in this study, including 56.5% of males (373/660). Forty-nine (7.4%) patients developed postoperative SSI. The main pathogen of SSI was Escherichia coli [culture positive rate was 32.7% (16/49)]. As compared to patients without SSI, those with SSI were more likely to be older (median 56 years vs. 46 years, U=19 973.5, P<0.001), male [71.4% (35/49) vs. 56.1% (343/611), χ(2)=4.334, P=0.037] and diabetes [14.3% (7/49) vs. 5.1% (31/611), χ(2)=5.498, P=0.015]; with-lower preoperative hemoglobin (median: 122.0 g/L vs. 143.5 g/L, U=11 471.5, P=0.006) and albumin (median: 35.5 g/L vs. 40.8 g/L, U=9452.0, P<0.001), with higher blood glucose (median: 6.9 mmol/L vs. 6.0 mmol/L, U=17 754.5, P<0.001); with intestinal obstruction [32.7% (16/49) vs. 9.2% (56/611), χ(2)=25.749, P<0.001], with ASA score 3-4 [42.9% (21/49) vs. 13.9% (85/611), χ(2)=25.563, P<0.001] and with high surgical risk [49.0% (24/49) vs. 7.0% (43/611), χ(2)=105.301, P<0.001]. The main operative procedure resulting in SSI was laparotomy [81.6%(40/49) vs. 35.7%(218/611), χ(2)=40.232, P<0.001]. Patients with SSI experienced significantly longer operation time (median: 150 minutes vs. 75 minutes, U=25 183.5, P<0.001). In terms of clinical outcome, higher ICU occupancy rate [51.0% (25/49) vs. 19.5% (119/611), χ(2)=26.461, P<0.001], more hospitalization costs (median: 44 000 yuan vs. 15 000 yuan, U=24 660.0, P<0.001), longer postoperative hospital stay (median: 10 days vs. 5 days, U=23 100.0, P<0.001) and longer ICU occupancy time (median: 0 days vs. 0 days, U=19 541.5, P<0.001) were found in the SSI group. Multivariate logistic regression analysis showed that the elderly (OR=3.253, 95% CI: 1.178-8.985, P=0.023), colorectal surgery (OR=9.156, 95% CI: 3.655-22.937, P<0.001) and longer operation time (OR=15.912, 95% CI:6.858-36.916, P<0.001) were independent risk factors of SSI, while the laparoscopic surgery (OR=0.288, 95% CI: 0.119-0.694, P=0.006) was an independent protective factor for SSI. Conclusions: For patients undergoing EAS, attention should be paid to middle-aged and elderly patients and those of colorectal surgery. Laparoscopic surgery should be adopted when feasible and the operation time should be minimized, so as to reduce the incidence of SSI and to reduce the burden on patients and medical institutions.
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Affiliation(s)
- Z Li
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, China
| | - J R Gao
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, China
| | - L Song
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, China
| | - P G Wang
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, China
| | - J A Ren
- Research Institute of General Surgery, East War Zone Hospital of PLA, Nanjing, Jiangsu 210002, China
| | - X W Wu
- Research Institute of General Surgery, East War Zone Hospital of PLA, Nanjing, Jiangsu 210002, China
| | - S M Luo
- Department of Gastrointestinal Surgery, the People's Hospital of Xinjiang Uygur Autonomous Region, Urumq, Xinjiang 830001, China
| | - Q J Zeng
- Department of General Surgery, Yueyang First People's Hospital, Yueyang, Hunan 414000, China
| | - Y H Weng
- Department of General Surgery, Shoukang Hospital, Huangshan, Anhui 245000, China
| | - X J Xu
- Department of General Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830001, China
| | - Q Z Yuan
- Department of Hepatobiliary Surgery, Shengli Oilfield Central Hospital, Dongying, Shandong 257000, China
| | - J Zhao
- Department of General Surgery, Shangqiu First People's Hospital, Shangqiu, Henan 476000, China
| | - N S Liao
- Department of General Surgery, Taizhou First People's Hospital, Taizhou, Zhejiang 318000, China
| | - W Mai
- Department of Gastrointestinal Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, China
| | - F Wang
- Department of Gastrointestinal Surgery, the Affiliated Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing 102218, China
| | - H Cao
- Department of General Surgery, General Hospital of Oriental Hospital Group, Huainan, Anhui 232001, China
| | - S C Wang
- Department of General Surgery, the 901th Hospital of PLA Joint Logistic Support Force, Hefei, Anhui 230031, China
| | - G Han
- Department of Gastrointestinal Surgery, the Second Hospital of Jilin University, Changchun, Jilin 130000, China
| | - D R Wang
- Department of General Surgery, Subei People's Hospital, Yangzhou, Jiangsu 225001, China
| | - H Wang
- Department of General Surgery, Dongying People's Hospital, Dongying, Shandong 257091, China
| | - J Zhang
- Department of General Surgery, FAW General Hospital, Changchun, Jilin 100191, China
| | - H Zhang
- Department of General Surgery, Dongguan Kanghua Hospital, Dongguan, Guangdong 523080, China
| | - D M Zhang
- Department of General Surgery, Baotou Central Hospital, Baotou, Inmer Mongolia 014040, China
| | - W S Liao
- Department of General Surgery, Traditional Chinese Medicine Hospital of Langxi County, Xuancheng, Anhui 242000, China
| | - W W Zhao
- Department of General Surgery, Xishan People's Hospital, Wuxi, Jiangsu 214100, China
| | - W Li
- Department of General Surgery, Xuzhou First People's Hospital, Xuzhou, Jiangsu 221002, China
| | - P Cui
- Department of General Surgery, Heji Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi 140400, China
| | - X Chen
- Department of General Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116023, China
| | - H Y Zhang
- Department of General Surgery, Nanyang Central Hospital, Nanyang, Henan 476000, China
| | - T Yang
- Department of General Surgery, Tianjin First Central Hospital, Tianjin 300192, China
| | - L Wang
- Department of General Surgery, the 900th Hospital of the PLA, Fuzhou, Fujian 350000, China
| | - Y S Gao
- Department of Gastrointestinal Surgery,the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - J Li
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - J J Wu
- Department of General Surgery, Liyang People's Hospital, Liyang, Jiangsu 213300, China
| | - W Zhou
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310020, China
| | - Z J Lyu
- Department of Gastrointestinal Surgery, Guangdong Provincial People's Hospital, Guangzhou, Guangdong 510030, China
| | - J Fang
- Department of General Surgery, the First People's Hospital, Zhangjiagang, Jiangsu 100191, China
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12
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Huang XB, Yuan L, Ye CX, Zhu X, Lin CJ, Zhang DM, He KS, Niu RX, Cao KY, Xu L. Epidemiological characteristics of respiratory viruses in patients with acute respiratory infections during 2009-2018 in southern China. Int J Infect Dis 2020; 98:21-32. [PMID: 32562851 DOI: 10.1016/j.ijid.2020.06.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Acute respiratory infections (ARIs) remain a significant public threat with high morbidity and mortality worldwide; viruses are significant pathogens that cause ARIs. This study was conducted to better understand the epidemiological characteristics of respiratory viruses circulating in southern China. METHODS We collected 22,680 respiratory samples from ARI patients in 18 hospitals in southern China during 2009-2018; seven common respiratory viruses including Flu, RSV, PIV, hMPV, ADV, HCoV, and HBoV were screened using in-house real-time PCR. RESULTS Of all samples, 9760 ARI cases (9760/22680, 43.03%) tested positive for the seven common respiratory viruses. The most detected virus was Flu (14.15%), followed by RSV (10.33%) and PIV (5.43%); Flu-A, PIV3, and HCoV-OC43 were the predominant subtypes. Although most of the viruses were detected in male inpatients, Flu was more likely detected in female outpatients. Flu infection was more likely to cause URTI (upper respiratory tract infection), whereas RSV infection was more likely to cause pneumonia and bronchitis. The prevalence of Flu was particularly high in 2009. The epidemic level was found notably high in 2014-2018 for RSV, in 2016-2018 for PIV, in the summer of 2018 for ADV, in the summer of 2016 and winter of 2018 for HCoV, and in the summer of 2011 and autumn of 2018 for HBoV. The co-detection rate of the seven viruses was 4.70%; RSV, PIV, and Flu were the most commonly co-detected viruses. CONCLUSIONS This work demonstrates the epidemiological characteristics of seven common respiratory viruses in ARI patients in southern China.
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Affiliation(s)
- Xu-Bin Huang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lei Yuan
- Clinical laboratory, First Affiliated Hospital of Nanchang University, Nanchang University, Jiangxi, China; Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Cong-Xiu Ye
- Department of Dermatovenereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xun Zhu
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Cui-Ji Lin
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ding-Mei Zhang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Kai-Shu He
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ruo-Xi Niu
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Kai-Yuan Cao
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
| | - Lin Xu
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Research Center for Clinical Laboratory Standard, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
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Wang YZ, Li QX, Zhang DM, Chen LB, Wang H. Ryanodine receptor 1 mediated dexamethasone-induced chondrodysplasia in fetal rats. Biochim Biophys Acta Mol Cell Res 2020; 1867:118791. [PMID: 32619649 DOI: 10.1016/j.bbamcr.2020.118791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/22/2020] [Accepted: 06/26/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Osteoarthritis is caused by cartilage dysplasia and has fetal origin. Prenatal dexamethasone exposure (PDE) induced chondrodysplasia in fetal rats by inhibiting transforming growth factor β (TGFβ) signaling. This study aimed to determine the effect of dexamethasone on fetal cartilage development and illustrate the underlying molecular mechanism. METHODS Dexamethasone (0.2 mg/kg.d) was injected subcutaneously every morning in pregnant rats from gestational day (GD) 9 to GD21. Harvested fetal femurs and tibias at GD21 for immunofluorescence and gene expression analysis. Fetal chondrocytes were treated with dexamethasone (100, 250 and 500 nM), endoplasmic reticulum stress (ERS) inhibitor, and ryanodine receptor 1 (RYR1) antagonist for subsequent analyses. RESULTS In vivo, prenatal dexamethasone exposure (PDE) decreased the total length of the fetal cartilage, the proportion of the proliferation area and the cell density and matrix content in fetal articular cartilage. Moreover, PDE increased RYR1 expression and intracellular calcium levels and elevated the expression of ERS-related genes, while downregulated the TGFβ signaling pathway and extracellular matrix (ECM) synthesis in fetal chondrocytes. In vitro, we verified dexamethasone significantly decreased ECM synthesis through activating RYR 1 mediated-ERS. CONCLUSIONS PDE inhibited TGFβ signaling pathway and matrix synthesis through RYR1 / intracellular calcium mediated ERS, which ultimately led to fetal dysplasia. This study confirmed the molecular mechanism of ERS involved in the developmental toxicity of dexamethasone and suggested that RYR1 may be an early intervention target for fetal-derived adult osteoarthritis.
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Affiliation(s)
- Yi-Zhong Wang
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Xiangyang No.1 People' Hospital, Hubei University of Medicine, Xiangyang 441000, China
| | - Qing-Xian Li
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Ding-Mei Zhang
- Department of Pharmacology, Basic Medical School of Wuhan University, Wuhan 430071, China
| | - Liao-Bin Chen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
| | - Hui Wang
- Department of Pharmacology, Basic Medical School of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
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14
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Min T, Liu SD, Xin GB, Zhang DM. Retention Time and Ion Abundance Ratio of 8 Common Drugs (Poisons) by LC-MS/MS Qualitative Analysis. Fa Yi Xue Za Zhi 2020; 36:216-222. [PMID: 32530170 DOI: 10.12116/j.issn.1004-5619.2020.02.013] [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] [Received: 04/09/2018] [Indexed: 06/11/2023]
Abstract
Objective To investigate the maximum allowable deviations of retention time and ion abundance ratio of the 8 common drugs (poisons) from 3 categories, poisons (methamphetamine, morphine, ketamine), benzodiazepines (estazolam, midazolam, diazepam, clonazepam) and barbiturates (phenobarbital) in blood, by liquid chromatography-tandem mass spectrometry (LC-MS/MS) in forensic toxicology analysis. Methods The deviations of retention time and ion abundance ratio at 7 low mass concentrations, limit of detection (LOD), 2LOD, limit of quantitation (LOQ), 1.5LOQ, 2LOQ, 4LOQ and 6LOQ, were tested by LC-MS/MS after liquid-liquid extraction under the conditions of two chromatographic columns and three chromatographs. Results The deviation of absolute retention time of 98.11% of 8 drugs (poisons) in the blood samples was within the range of ±0.05 min, and that of the relative retention time of 96.21% was within the range of ±0.4%. The maximum deviation of the ion abundance ratio was highly correlated with the mass concentration. When the mass concentration of drugs (poisons) was LOQ or above, more than 95% of the absolute deviation and relative deviation of the ion abundance ratio were in the range of ±25% and ±40%, respectively; when the mass concentration was below LOQ, the range could be expanded to ±35% and ±50%, respectively. Conclusion It is recommended for the determination range of the absolute retention time deviation of 8 common drugs (poisons) to be ±0.1 min and that of the relative retention time deviation to be ±1.0%. The determination range of absolute deviation of the ion abundance ratio should be ±25% when the mass concentration is LOQ or above, and the relative deviation should be ±40%. When the mass concentration is below LOQ, the deviation determination range can be expanded to ±35% and ±50%, respectively.
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Affiliation(s)
- T Min
- School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - S D Liu
- Dian Institute of Forensic Science, Hangzhou 310000, China
| | - G B Xin
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
| | - D M Zhang
- School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
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15
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Chen SY, Wen F, Zhao CB, Zhang DM, Wu XL. [Effect of cognitive impairment on social function and quality of life in chronic schizophrenia]. Zhonghua Yi Xue Za Zhi 2020; 100:351-356. [PMID: 32074778 DOI: 10.3760/cma.j.issn.0376-2491.2020.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To clarify the effect of cognitive impairment on social function and quality of life of chronic schizophrenia, and provide clinical cognitive strategies for improving the social function and quality of life of patients with schizophrenia. Methods: Atotal of 158 patients with chronic schizophrenia were selected from May 2017 to October 2017 in the Psychiatry Department of the Third Affiliated Hospital of Sun Yat-sen University received psychological assessments, such as, MATRICS Consensus Cognitive Battery(MCCB), the Brief Psychiatric Rating Scale(BPRS), the Personal and Social Performance scale(PSP), and Schizophrenia Quality of Life Scale(SQLS). We further explored the effects of neurocognitive and social cognitive functions on their individual and social performance and quality of life in patients with schizophrenia. Results: (1) The scores of SQLS in the group with impaired social cognitive function were higher than those with good social function(101±46 vs 76±40, P=0.002). (2) The digital sequence and continuous performance test of the socially functional group were higher than the defect group. (3) There was a significant correlation between the years of education(R(2)=0.334, F=25.542), continuous performance (R(2)=0.316, F=35.647), BPRS (R(2)=0.280, F=60.386) and social function (P<0.001). (4) BPRS (R(2)=0.486, F=228.28), and emotional management (MSCEIT) (R(2)=0.510, F=124.789), education (R(2)=0.531, F=90.161), age (R(2)=0.539, F=69.644) significantly affected the SQLS score of patients with schizophrenia(P<0.001). Conclusion: The social function and quality of life of patients with schizophrenia are significantly correlated with their years of education and disease severity. Continuous performance in neurocognition significantly affects the social function of patients with schizophrenia, and emotional management in social cognition significantly affects their quality of life. Socially functional schizophrenia patients have higher digital sequences (working memory) and continuous performance (attention/alertness) scores.
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Affiliation(s)
- S Y Chen
- Department of Psychiatry, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - F Wen
- Department of Psychiatry, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510630, China
| | - C B Zhao
- Department of Psychiatry, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - D M Zhang
- Outpatient Office of Yuedong Hospital, the Third Affiliated Hospital of Sun Yat-sen University, Meizhou 514000, China
| | - X L Wu
- Department of Psychiatry, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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16
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Liu SD, Min T, Xin GB, Zhang DM. Ion Abundance Ratios of Qualitative Analysis by GC-MS of 4 Common Drugs (Poisons. Fa Yi Xue Za Zhi 2019; 35:687-694. [PMID: 31970955 DOI: 10.12116/j.issn.1004-5619.2019.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Indexed: 06/10/2023]
Abstract
Objective To investigate the maximum allowable deviation of ion abundance ratios of characteristic fragment ions in common drugs (poisons) in blood by gas chromatography-mass spectrometry (GC-MS) method. Methods Four common drugs (poisons) (dichlorvos, phorate, diazepam and estazolam) were detected by GC-MS full scan mode after liquid-liquid extraction in two laboratories and under three chromatographic conditions. The deviations of ion abundance ratios of the four common drugs (poisons) in marked blood samples with concentrations of 0.5, 1.0, 2.0, 5.0 and 10.0 μg/mL were analyzed. At the same time, the false negative rates of ion abundance ratios were analyzed when the mass concentration was limit of detection (LOD), 2LOD, limit of quantitation (LOQ) and 2LOQ, and the false positive rates of ion abundance ratios were analyzed with blank blood samples. Results Under the two laboratories, four common drugs (poisons) and three kinds of chromatography conditions, the differences in deviations of the ion abundance ratios of marked blood samples were not statistically significant (P>0.05). More than 95% of the absolute deviations of the ion abundance ratios of the marked blood samples were within the range of ±10%, and more than 95% of the relative deviations were within the range of ±25%. In cases of low concentration (concentration less than 2LOQ) or low signal to noise ratio (3-15), the false negative rate was less than 5% and the false positive rate was 0% when the relative deviation was greater than 50%. Conclusion The absolute deviations of ion abundance ratios of four common drugs (poisons) in marked blood samples are advised to have a determination range within ±10%, and the determination range of relative deviations within ±25%.
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Affiliation(s)
- S D Liu
- Dian Institute of Forensic Sciences, Hangzhou 310000, China
- Shanghai Dian Forensic Science Co., Ltd, Shanghai 200000, China
| | - T Min
- Dian Institute of Forensic Sciences, Hangzhou 310000, China
- Shanghai Dian Forensic Science Co., Ltd, Shanghai 200000, China
| | - G B Xin
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
| | - D M Zhang
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
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Sun GH, Li DW, Guo S, Zhang DM, Cui SH. [The role of neutrophil in the pathogenesis of chronic rhinosinusitis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:789-792. [PMID: 31446744 DOI: 10.13201/j.issn.1001-1781.2019.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Indexed: 11/12/2022]
Abstract
SummaryChronic nasal-sinusitis is a chronic inflammatory disease characterized by persistent inflammation in the nasal and nasal mucosa. The pathogenesis of CRS is extremely complex and there is currently a lack of effective therapy. The reason for inaccurate diagnosis and invalid treatment of CRS is its sophisticated and unclear mechanism. The pathogenesis of CRS from Asian populations is neutrophil infiltration mediated by Th1/Th17 mixture. Consequently, exploring the function of neutrophil in the pathogenesis of CRS plays an important role in clinical diagnosis and treatment for CRS patients in China.
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Zhang DM, Zhang T, Wang MM, Wang XX, Qin YY, Wu J, Han R, Sheng R, Wang Y, Chen Z, Han F, Ding Y, Li M, Qin ZH. TIGAR alleviates ischemia/reperfusion-induced autophagy and ischemic brain injury. Free Radic Biol Med 2019; 137:13-23. [PMID: 30978385 DOI: 10.1016/j.freeradbiomed.2019.04.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 03/12/2019] [Accepted: 04/01/2019] [Indexed: 12/29/2022]
Abstract
Autophagy has been reported to play protective and pathogenetic roles in cerebral ischemia/reperfusion (I/R)-induced neuronal injury. Our previous studies have shown that TP53-induced glycolysis and apoptosis regulator (TIGAR) ameliorates I/R-induced brain injury and reduces anti-cancer drug-induced autophagy activation. However, if TIGAR plays a regulatory role on autophagy in cerebral I/R injury is still unclear. The purpose of the present study is to investigate the role of TIGAR on I/R-induced autophagy activation and ischemic neuronal injury in vivo and in vitro stroke models using TIGAR-transgenic (tg-TIGAR) mice and TIGAR-knockout (ko-TIGAR) mice. The present study confirmed that autophagy was activated after I/R. Overexpression of TIGAR in tg-TIGAR mice significantly reduced I/R-induced autophagy activation and alleviated brain damage, while knockout of TIGAR in ko-TIGAR mice enhanced I/R-induced autophagy activation and exacerbated brain injury in vivo and in vitro. The different activity of autophagy in tg-TIGAR and ko-TIGAR primary neurons after OGD/R were largely reversed by knockdown or re-expression of TIGAR in these neurons. The autophagy inhibitor 3-methyladenine (3-MA) partly prevented exacerbation of brain damage induced by ko-TIGAR, whereas the autophagy inducer rapamycin partially abolished the neuroprotective effect of tg-TIGAR. Knockout of TIGAR reduced the levels of phosphorylated mTOR and S6KP70, which were blocked by 3-MA and NADPH after I/R and OGD/R in vivo and in vitro, respectively. Overexpression of TIGAR increased the levels of phosphorylated mTOR and S6KP70 under OGD/R condition, this enhancement effect was suppressed by rapamycin. In conclusion, our current data suggest that TIGAR protected against neuronal injury partly through inhibiting autophagy by regulating the mTOR-S6KP70 signaling pathway.
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Affiliation(s)
- Ding-Mei Zhang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Tian Zhang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Ming-Ming Wang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Xin-Xin Wang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Yuan-Yuan Qin
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Junchao Wu
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Rong Han
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Rui Sheng
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Yan Wang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China
| | - Zhong Chen
- Department of Pharmacology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Feng Han
- College of Pharmaceutical Science, Nanjing Medical University, Nanjing, 210029, China
| | - Yuqiang Ding
- Institutes of Brain Sciences, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200032, China
| | - Mei Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, China.
| | - Zheng-Hong Qin
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Science, Soochow University, Suzhou, 215123, China.
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Yang S, Wu H, He K, Yan T, Zhou J, Zhao LL, Sun JL, Lian WQ, Zhang DM, Du ZJ, Luo W, He Z, Ye X, Li SJ. Response of AMP-activated protein kinase and lactate metabolism of largemouth bass (Micropterus salmoides) under acute hypoxic stress. Sci Total Environ 2019; 666:1071-1079. [PMID: 30970473 DOI: 10.1016/j.scitotenv.2019.02.236] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 05/12/2023]
Abstract
To study adaptation of largemouth bass (Micropterus salmoides) to hypoxic stress, we investigated physiological responses and lactate metabolism of the fish under acute hypoxia. The objectives of this study were to (a) observe changes in glucose, glycogen, and lactate content; (b) detect the activity of lactate dehydrogenase (LDH) in serum, brain, heart, and liver tissues; and (c) quantify the dynamic gene expression of AMP activated protein kinase alpha (AMPKα), hypoxia-inducible factor-1 alpha (HIF-1α), monocarboxylate transporter 1 (MCT1), monocarboxylate transporter 4 (MCT4), and lactate dehydrogenase-a (LDHa) following exposure to hypoxia. The fish were subjected to two hypoxia stresses (dissolved oxygen [DO] 1.20 ± 0.2 mg/L and 3.50 ± 0.3 mg/L, respectively) for 24 h. Our results showed that hypoxic stress significantly increased the decomposition of liver glycogen and significantly increased the concentration of blood glucose; however, the muscle glycogen content was not significantly decreased, which indicates that liver glycogen was the main energy source under acute hypoxia. Moreover, hypoxia led to accumulation of a large amount of lactic acid in tissues, possibly due to the activity of lactic acid dehydrogenase, but this process was delayed in the heart and brain relative to the liver. Additionally, hypoxia induced the expression of AMPKα, HIF-1α, MCT1, MCT4, and LDHa, suggesting that glycometabolism had switched from aerobic to anaerobic. Our results contribute to a better understanding of the molecular mechanisms of the response to hypoxia in largemouth bass.
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Affiliation(s)
- S Yang
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - H Wu
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - K He
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - T Yan
- Fisheries Institute of Sichuan Academy of Agricultural Science, Chengdu, Sichuan 611731, China
| | - J Zhou
- Fisheries Institute of Sichuan Academy of Agricultural Science, Chengdu, Sichuan 611731, China.
| | - L L Zhao
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China.
| | - J L Sun
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - W Q Lian
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - D M Zhang
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - Z J Du
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - W Luo
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - Z He
- College of Animal Science and Technology, Sichuan Agricultural University (SICAU), Wenjiang, Chengdu, Sichuan 611130, China
| | - X Ye
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China
| | - S J Li
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China
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Cai ZQ, Chai SH, Wei XL, You KZ, Li J, Zhang DM. Comparison of postsurgical clinical sequences between completely embolized and incompletely embolized patients with wide nicked intracranial aneurysms treated with stent assisted coil embolization technique: A STROBE-compliant study. Medicine (Baltimore) 2018; 97:e10987. [PMID: 29879055 PMCID: PMC5999491 DOI: 10.1097/md.0000000000010987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The technique of stent-assisted coil embolization has been widely used in the clinic, while its efficacy and safety have yet to be evaluated. This study investigates the values of computed tomography angiography (CTA), magnetic resonance angiography (MRA), and digital subtraction angiography (DSA) in evaluating the Enterprise stent-assisted coil embolization in the treatment of intracranial wide-necked aneurysm.A total of 578 intracranial wide-necked aneurysm patients confirmed by MRA + CTA + DSA examinations were included and treated with Enterprise stent-assisted coil embolization in this study. All patients were assigned into complete embolization (CE) group and incomplete embolization (IE) group according to the results of postoperative MRA + CTA + DSA examinations and Raymond grades. Hunt-Hess grades, incidence of complication and Glasgow Outcome Scale (GOS) grades of patients were investigated to assess the therapeutic effect of Enterprise stent-assisted coil embolization in intracranial wide-necked treatment. Multivariate logistic regression analysis was performed to assess risk factors for the therapeutic effect of Enterprise stent-assisted coil embolization in intracranial wide-necked aneurysm.CTA images offered a better and clearer view than MRA and DSA images in both the CE and IE groups. Both the sensitivity and specificity of CTA were apparently higher than those of MRA. Patients in the CE group enjoyed a higher good GOS rate but a lower incidence of complication than those in the IE group. In Enterprise stent-assisted coil embolization treatment, the Hunt-Hess grade, hypertension, and size of artery aneurysm were independent factors affecting the therapeutic effect of Enterprise stent-assisted coil embolization in intracranial wide-necked aneurysm.Compared with MRA, CTA shows a higher value in evaluating the therapeutic effect of Enterprise stent-assisted coil embolization for the treatment of intracranial wide-necked aneurysm, and can thus serve as an important means of predicting the therapeutic effect of endovascular intervention in treating patients with intracranial wide-necked aneurysm.
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Liu SD, Min T, Wang M, Zhang DM. Retention Time of Four Common Poisons (Drugs) by GC-MS Qualitative Analysis. Fa Yi Xue Za Zhi 2018; 34:595-600. [PMID: 30896095 DOI: 10.12116/j.issn.1004-5619.2018.06.004] [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] [Received: 04/22/2017] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To investigate the maximum allowable deviation of retention time (RT) or relative retention time (RRT) between the common poisons (drugs) and standard solvent by gas chromatography-mass spectrometry (GC-MS). METHODS After pretreatment with liquid-liquid extraction, four common poisons (drugs)-dichlorvos, phorate, diazepam and estazolam-were detected by full scan mode GC-MS. RT and RRT were analyzed according to combined uncertainty and expanded uncertainty. RESULTS The expanded uncertainty of RT and RRT were 6.0×10-4-14.1×10-3 and 2.5×10-6-5.9×10-5 (k=3), respectively. The RT of poisons (drugs) was relatively stable in blood samples with different mass concentrations. Among dichlorvos, phorate, diazepam and estazolam, the absolute deviation and relative deviation of RT were ≤0.03 min and ≤0.4%, respectively, and those of RRT were ≤0.003 min and ≤0.3%, respectively. CONCLUSIONS The maximum allowable deviations of RT and RRT for common poisons (drugs) in blood samples are recommended to be ±0.05 min and ±0.5%.
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Affiliation(s)
- S D Liu
- School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - T Min
- School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - M Wang
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
| | - D M Zhang
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
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22
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Chen J, Zhang DM, Feng X, Wang J, Qin YY, Zhang T, Huang Q, Sheng R, Chen Z, Li M, Qin ZH. TIGAR inhibits ischemia/reperfusion-induced inflammatory response of astrocytes. Neuropharmacology 2018; 131:377-388. [DOI: 10.1016/j.neuropharm.2018.01.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 01/07/2018] [Accepted: 01/09/2018] [Indexed: 01/03/2023]
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Zhang SF, Tuo JL, Huang XB, Zhu X, Zhang DM, Zhou K, Yuan L, Luo HJ, Zheng BJ, Yuen KY, Li MF, Cao KY, Xu L. Epidemiology characteristics of human coronaviruses in patients with respiratory infection symptoms and phylogenetic analysis of HCoV-OC43 during 2010-2015 in Guangzhou. PLoS One 2018; 13:e0191789. [PMID: 29377913 PMCID: PMC5788356 DOI: 10.1371/journal.pone.0191789] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/11/2018] [Indexed: 12/24/2022] Open
Abstract
Human coronavirus (HCoV) is one of the most common causes of respiratory tract infection throughout the world. To investigate the epidemiological and genetic variation of HCoV in Guangzhou, south China, we collected totally 13048 throat and nasal swab specimens from adults and children with fever and acute upper respiratory infection symptoms in Gunazhou, south China between July 2010 and June 2015, and the epidemiological features of HCoV and its species were studied. Specimens were screened for HCoV by real-time RT-PCR, and 7 other common respiratory viruses were tested simultaneously by PCR or real-time PCR. HCoV was detected in 294 cases (2.25%) of the 13048 samples, with most of them inpatients (251 cases, 85.4% of HCoV positive cases) and young children not in nursery (53.06%, 156 out of 294 HCoV positive cases). Four HCoVs, as OC43, 229E, NL63 and HKU1 were detected prevalent during 2010–2015 in Guangzhou, and among the HCoV positive cases, 60.20% were OC43, 16.67% were 229E, 14.97% were NL63 and 7.82% were HKU1. The month distribution showed that totally HCoV was prevalent in winter, but differences existed in different species. The 5 year distribution of HCoV showed a peak-valley distribution trend, with the detection rate higher in 2011 and 2013 whereas lower in 2010, 2012 and 2014. The age distribution revealed that children (especially those <3 years old) and old people (>50 years) were both high risk groups to be infected by HCoV. Of the 294 HCoV positive patients, 34.69% (101 cases) were co-infected by other common respiratory viruses, and influenza virus was the most common co-infecting virus (30/101, 29.70%). Fifteen HCoV-OC43 positive samples of 2013–2014 were selected for S gene sequencing and phylogenetic analysis, and the results showed that the 15 strains could be divided into 2 clusters in the phylogenetic tree, 12 strains of which formed a separate cluster that was closer to genotype G found in Malaysia. It was revealed for the first time that genotype B and genotype G of HCoV-OC43 co-circulated and the newly defined genotype G was epidemic as a dominant genotype during 2013–2014 in Guanzhou, south China.
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Affiliation(s)
- Su-Fen Zhang
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Clinical Laboratory and Institute of Medical Genetics, Women and Children's Healthcare Hospital of Zhuhai City, Zhuhai, Guangdong Province, China
| | - Jiu-Ling Tuo
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xu-Bin Huang
- Medical ICU, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xun Zhu
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Ding-Mei Zhang
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Kai Zhou
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Lei Yuan
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Hong-Jiao Luo
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Bo-Jian Zheng
- Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Department of Microbiology, University of Hong Kong, Hong Kong SAR, China
| | - Kwok-Yung Yuen
- Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Department of Microbiology, University of Hong Kong, Hong Kong SAR, China
| | - Meng-Feng Li
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Kai-Yuan Cao
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Lin Xu
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong Province, China.,Sun Yat-sen University-University of Hong Kong Joint Laboratory of Infectious Disease Surveillance, Sun Yat-sen University, Guangzhou, Guangdong Province, China
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Wang RL, Zhang DM. [The comparison of clinical features and laboratory indexes between flat descending hearing loss and total hearing loss]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1892-1895. [PMID: 29798311 DOI: 10.13201/j.issn.1001-1781.2017.24.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Indexed: 11/12/2022]
Abstract
Objective:To discuss similarities and differences in clinical features and laboratory indexes between patients with flat descending type sudden hearing loss and those with total hearing loss. Method:The clinical data of 123 patients with full frequencies hearing loss were retrospectively analyzed. The differences in clinical features and laboratory tests(platelet, coagulation series, D-dimer, blood lipids, hemorheology) between patients with flat descending hearing loss and those with total hearing loss were analyzed by gender, age and ear side, treatment time, concomitant symptom (tinnitus, dizziness), original underlying diseases (hypertension, diabetes), etc. Result:In the clinical features,among 51 flat descending cases, the ratio of male and female was 2.401:1; among 72 total hearing loss cases, the ratio of men and women ratio was 1.058:1 (P<0.05). Among two groups of patients,the majority received treatment within 7 days, among whom 66.7% were flat descending population, and 83.3% were total hearing loss population (P<0.05). Flat descending population with dizziness only accounted for 35.3% while this figure was up to 70.8% when it came to total hearing loss patients (P<0.01). Two groups showed no differences in age, ear side, tinnitus, the original underlying diseases (hypertension, diabetes). In the laboratory tests, the total hearing loss population overtopped the plat descending population in PLT and PCT (P<0.05), while falling below the plat descending population in APTT (P<0.01). Two groups showed no differences in other indicators of platelet and coagulation series and laboratory data of D-dimer, blood lipids, hemorheology. Conclusion:Compared with flat descending sudden hearing loss, sudden total hearing loss more frequently happened to females who also were accompanied by dizziness. The treatment rate within 7 days was high and the patients with hypercoagulable state accounted for a higher proportion.
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Affiliation(s)
- R L Wang
- Postgraduate College of Shanxi Medical University, Taiyuan, 030000, China
| | - D M Zhang
- Department of Otolaryngology Head and Neck Surgery, Fenyang Hospital of Shanxi Province
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Liu SD, Zhang DM, Zhang W, Zhang WF. [Confirming Indicators of Qualitative Results by Chromatography-mass Spectrometry in Biological Samples]. Fa Yi Xue Za Zhi 2017; 33:181-188. [PMID: 29231028 DOI: 10.3969/j.issn.1004-5619.2017.02.016] [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: 09/26/2016] [Indexed: 11/18/2022]
Abstract
Because of the exist of complex matrix, the confirming indicators of qualitative results for toxic substances in biological samples by chromatography-mass spectrometry are different from that in non-biological samples. Even in biological samples, the confirming indicators are different in various application areas. This paper reviews the similarities and differences of confirming indicators for the analyte in biological samples by chromatography-mass spectrometry in the field of forensic toxicological analysis and other application areas. These confirming indicators include retention time (RT), relative retention time (RRT), signal to noise (S/N), characteristic ions, relative abundance of characteristic ions, parent ion-daughter ion pair and abundance ratio of ion pair, etc.
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Affiliation(s)
- S D Liu
- School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - D M Zhang
- Forensic Medical Identification Center of Beijing Municipal Public Security Bureau, Beijing 100192, China
| | - W Zhang
- Forensic Medical Identification Center of Beijing Municipal Public Security Bureau, Beijing 100192, China
| | - W F Zhang
- Forensic Medical Identification Center of Beijing Municipal Public Security Bureau, Beijing 100192, China
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26
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Zhang DM, Xu BB, Yu L, Zheng LF, Chen LP, Wang W. [A prospective control study of Saccharomyces boulardii in prevention of antibiotic-associated diarrhea in the older inpatients]. Zhonghua Nei Ke Za Zhi 2017; 56:398-401. [PMID: 28592037 DOI: 10.3760/cma.j.issn.0578-1426.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the value of Saccharomyces boulardii for the prevention of antibiotic-associated diarrhea in older inpatients. Methods: A total of 163 older patients who were treated with wide-spectrum antibiotics at least three days during January 2014 to December 2015 were randomly divided into control and study group. In study group, 81 patients were administrated with oral Saccharomyces boulardii 500 mg twice a day for 21 days. The control group was of no intervention. Morbidity rate of antibiotic-associated diarrhea and Clostridium difficile-associated diarrhea, frequency and duration of diarrhea were recorded. Results: The incidence of antibiotic-associated diarrhea in study group was significantly lower than that in control group [14.8%(12/81) vs 28.0%(23/82), P<0.05], whereas no difference was seen in the incidence of Clostridium difficile-associated diarrhea [3.7%(3/81) vs 4.9%(4/82), P>0.05] in two groups. The frequency and duration of diarrhea in the study group were significantly lower and shorter than those in control group[(4.3±1.7) times/day vs (6.9±2.0) times/day; (3.0±1.1) days vs (5.7±1.8) days, both P<0.01]. Conclusion:Saccharomyces boulardii may reduce the incidence of antibiotic-associated diarrhea therefore improving the symptom of diarrhea in older inpatients.
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Affiliation(s)
| | | | | | | | | | - W Wang
- Department of Gastroenterology, Fuzhou General Hospital of Nanjing Military Command, Fuzhou 350025, China
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Xie ZL, Zhang J, Zhang DM, Li JF, Lin YH. Effect of a high-concentrate diet on milk components and mammary health in Holstein dairy cows. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019204. [PMID: 28340261 DOI: 10.4238/gmr16019204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In order to evaluate the milk yield, milk quality, and health of dairy cows fed a high-concentrate (HC) diet, eight lactating Holstein dairy cattle were randomly assigned to HC or low-concentrate (LC) diet groups and fed for 50 days, and the auto-control studying before and after treatment with the two diets was used. During the experiment, plasma and milk samples were collected and measured. With regard to milk component, HC feeding led to higher milk production (P < 0.05), but significantly lower milk protein percentage (P < 0.05), milk protein yield (P < 0.05), and milk fat percentage (P < 0.05) throughout the five periods than LC feeding. Milk somatic cell count and N-acetyl-D-glucosaminidase activity (P < 0.01) were higher than those observed under LC feeding. mRNA expression levels of interleukin-8 (IL-8), C-C motif chemokine ligand (CCL5), and lactalbumin alpha (α-LA) were investigated by qPCR and found to be significantly lower (P < 0.01) in cattle fed the HC diet. The amino acid content was analyzed by high performance liquid chromatography (HPLC), and the content of Asp (P < 0.01), Gln (P < 0.01), Ala (P < 0.05), Leu (P < 0.05), Lys (P < 0.05), and Ile (P < 0.01) was significantly lower in the HC group, whereas the content of Arg (P < 0.05) and Phe (P < 0.01) was significantly higher. These results suggest that the HC diet might have an important influence on mammary health. The amino acid content was lower, suggesting that depletion of amino acids, resulting in depleted milk protein, affects milk quality.
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Affiliation(s)
- Z L Xie
- Jinshan College of Fujian Agriculture and Forestry University, Cangshan District, Fuzhou City, Fujian Province, China .,Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health in Fujian Province, Fujian Agriculture and Forestry University, Cangshan District, Fuzhou City, Fujian Province, China .,Beef Cattle Feeding Teaching Experimental Base, Jinshan College of Fujian Agriculture and Forestry University, Baisha Town, Minhou county, Fuzhou City, Fujian Province, China
| | - J Zhang
- Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health in Fujian Province, Fujian Agriculture and Forestry University, Cangshan District, Fuzhou City, Fujian Province, China
| | - D M Zhang
- Beef Cattle Feeding Teaching Experimental Base, Jinshan College of Fujian Agriculture and Forestry University, Baisha Town, Minhou county, Fuzhou City, Fujian Province, China
| | - J F Li
- Beef Cattle Feeding Teaching Experimental Base, Jinshan College of Fujian Agriculture and Forestry University, Baisha Town, Minhou county, Fuzhou City, Fujian Province, China
| | - Y H Lin
- Beef Cattle Feeding Teaching Experimental Base, Jinshan College of Fujian Agriculture and Forestry University, Baisha Town, Minhou county, Fuzhou City, Fujian Province, China
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Zhang DM, Pan YX, Zhang Y, Li ZK, Wu LQ, Liu HW, Zhang GY, Wang XF, Ma ZY. Antisense expression of Gossypium hirsutum UDP-glucuronate decarboxylase in Arabidopsis leads to changes in cell wall components. Genet Mol Res 2016; 15:gmr7409. [PMID: 26909959 DOI: 10.4238/gmr.15017409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
UDP-glucuronate decarboxylase (UDP-xylose synthase; UXS, EC 4.1.1.35) is an essential enzyme of the non-cellulosic polysaccharide biosynthetic pathway. In the present study, using transient expression of fluorescently labeled Gossypium hirsutum UXS (GhUXS3) protein in onion epidermal cells, we observed that this protein was distributed in the cytoplasm. The GhUXS3 cDNA of cotton was expressed in an antisense orientation in Arabidopsis thaliana by Agrobacterium tumefaciens-mediated transformation. Homozygous plants showing down-regulation of UXS were analyzed with northern blots. Compared to the untransformed control, transgenic plant showed shorter roots, earlier blossom formation, and delayed senescence. Biochemical analysis indicated that levels of rhamnose, mannose, galactose, glucose, xylose, and cellulose were reduced in some of the down-regulated antisense plants. These results suggest that GhUXS3 regulates the conversion of non-cellulosic polysaccharides and modulates their composition in plant cell walls. We also discuss a possible cellular function for GhUXS in determining the quality of cotton fibers.
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Affiliation(s)
- D M Zhang
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - Y X Pan
- North China University Science and Technology, Tangshan, China
| | - Y Zhang
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - Z K Li
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - L Q Wu
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - H W Liu
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - G Y Zhang
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - X F Wang
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
| | - Z Y Ma
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry/Key Laboratory of Crop Germplasm Resources of Hebei, Agricultural University of Hebei, Baoding, China
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Guo P, Shen SL, Zhang Q, Zeng FF, Zhang WJ, Hu XM, Zhang DM, Peng BG, Hao YT. Prognostic Evaluation of Categorical Platelet-based Indices Using Clustering Methods Based on the Monte Carlo Comparison for Hepatocellular Carcinoma. Asian Pac J Cancer Prev 2014; 15:5721-7. [DOI: 10.7314/apjcp.2014.15.14.5721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Guan LL, Wang Y, Luo YF, Xu L, Zhang DM, Cao KY. [Recombination analysis of enterovirus 71 strain isolated in Guangzhou, 2009]. Bing Du Xue Bao 2013; 29:299-303. [PMID: 23905474] [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: 06/02/2023]
Abstract
To describe the recombination features of human enterovirus 71 strain Guangzhou09 isolated in Guangzhou in 2009, the complete nucleotide sequences of Guangzhou09 were analyzed by various of bioinformatics software. Phylogenetic analysis based on P1, P2 and P3 regions indicated that recombination occurred between EV71 and CVA4. Phylogenetic, similarity plot and bootscan analysis further revealed the recombination between EV71 genotype C strain Shanghai-FJ713317 and CVA4 strain HQ728260 at region 2B was close to the nucleotide position 4 027. This represents the first evidence for intertypic recombination between EV71 subtype C4 and CVA4 in Guangzhou.
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Affiliation(s)
- Lin-Lin Guan
- Research Center for Clinical Laboratory Standard, Zhongshan Medical School of Sun Yat-sen University, Guangzhou 510080, China
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Wei W, Zhang DM, Yin LH, Pu YP, Liu SQ. Colorimetric detection of DNA damage by using hemin-graphene nanocomposites. Spectrochim Acta A Mol Biomol Spectrosc 2013; 106:163-169. [PMID: 23376271 DOI: 10.1016/j.saa.2012.12.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 12/20/2012] [Accepted: 12/30/2012] [Indexed: 06/01/2023]
Abstract
A colorimetric method for detection of DNA damage was developed by using hemin-graphene nanosheets (H-GNs). H-GNs were skillfully synthesized by adsorping of hemin on graphene through π-π interactions. The as-prepared H-GNs possessed both the ability of graphene to differentiate the damage DNA from intact DNA and the catalytic action of hemin. The damaged DNA made H-GNs coagulated to different degrees from the intact DNA because there were different amount of negative charge exposed on their surface, which made a great impact on the solubility of H-GNs. As a result, the corresponding centrifugal supernatant of H-GNs solution showed different color in the presence of 3,3',5,5'-tetramethylbenzidine (TMB) and H2O2, which could be discriminated by naked eyes or by ultraviolet (UV)-visible spectrometer. Based on this, the damaged effects of styrene oxide (SO), NaAsO2 and UV radiation on DNA were studied. Results showed that SO exerted most serious damage effect on DNA although all of them damaged DNA seriously. The new method for detection of DNA damage showed good prospect in the evaluation of genotoxicity of new compounds, the maximum limit of pesticide residue, food additives, and so on, which is important in the fields of food science, pharmaceutical science and pesticide science.
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Affiliation(s)
- W Wei
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, Jiangsu Province, PR China
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Zhang DM. Effects of Astragalus membranaceus and Potentilla discolor mixture on insulin resistance and its related mRNA expressions in KKAy mice with type 2 diabetes. ACTA ACUST UNITED AC 2012; 10:821-6. [DOI: 10.3736/jcim20120714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fung FS, He X, Wang Z, Xu L, Zhang DM, Guan LL, Deng Y, Cao KY. [Variation and evolution analysis of the PB1-F2 genes of novel influenza A viruses isolated from Guangzhou China]. Bing Du Xue Bao 2012; 28:317-323. [PMID: 22978153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To compare and analyze the variation of PB1-F2 genes of Influenza A Viruses from Guangzhou during 2009 to 2011 with the Influenza A Viruses from all over the world, to lay the foundation of functional research and interaction mechanism of the PB1-F2 protein. 17 Novel H1N1 influenza viruses and 1 seasonal H1N1 influenza virus have been isolated from human in Guangzhou during 2009 to 2011 that were cloned into pMD 18-T Vector for sequencing. Then, 68 PB1-F2 genes of IAVs from human around the world were downloaded from GenBank database and analyzed using molecular biological software. The phylogenetic tree result shows that the PB1-F2 genes of IAV from the world separated into two main groups. There is high homology of PB1-F2 genes of one Seasonal H1N1 virus and Novel H1N1 viruses which were isolated in Guangzhou compared with the global Novel H1N1 viruses. And all of them got the 11 amino acids truncated protein by mutation included one seasonal H1N1 strain isolated by our laboratory. There is no variation of PB1-F2 genes of Novel H1N1 virus in Guangzhou compared with the worldwide strains. However, one seasonal H1N1 virus which isolated by our laboratory shows analogous truncated mutation of PB1-F2 of Novel H1N1 virus, it reveals that the PB1-F2 gene might has done the early reassortment between the Novel H1N1 virus and seasonal H1N1 virus.
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Affiliation(s)
- Fat-Sum Fung
- Research Center for Clinical Laboratory Standard, Zhongshan Medical School of Sun Yat sen University, Guangzhou 510080, China.
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Cao KY, Xu L, Zhang DM, Zhang XM, Zhang T, He X, Wang Z, Feng FS, Qiu SP, Shen GX. New alternatively spliced variant of prostate-specific membrane antigen PSM-E suppresses the proliferation, migration and invasiveness of prostate cancer cells. Int J Oncol 2012; 40:1977-85. [PMID: 22322627 DOI: 10.3892/ijo.2012.1358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 12/27/2011] [Indexed: 11/05/2022] Open
Abstract
PSM-E is a newly discovered alternatively spliced variant of prostate-specific membrane antigen (PSMA). In the current study, its role on the proliferation, invasiveness and migration in prostate cancer cell lines was analyzed. PSM-E and PSMA (as a comparison) eukaryotic expression vectors pcDNA3.0/PSM-E and pcDNA3.0/PSMA were constructed, validated by RT-PCR and Western blotting, and PSMA/PSM-E overexpression PC-3 cell models were built. Gene interference was used to block PSMA and the expression of its splice variants in LNCap cells. Three shRNA fragments were synthesized against PSMA, cloned into the vector pSilencer 2.1-U6-neo, their interference effect was evaluated by RT-PCR and Western blotting, and pSilencer 2.1-U6-neo‑shRNA3 (named p‑shRNA3) was chosen in further analyses. Growth curves were drawn to observe the proliferation change, which showed that PSM-E had the potential to suppress proliferation (P<0.05), but no significant change was observed in PSMA/PC-3 cells and in PSMA/PSM-E interfering LNCap cells (P>0.05). Cross-river test showed that the migration speeds of PSM-E/PC-3 and PSMA/PC-3 were both significantly slower than the vector negative control, and faster in p-shRNA3 interfering LNCap cells compared with its vector negative control (P<0.05), and no significant difference existed between PSM-E/PC-3 and PSMA/PC-3 (P>0.05). Transwell assay showed that the invasive cells of both PSMA/PC-3 and PSM-E/PC-3 were fewer compared to the vector negative control (P<0.05), and the invasive suppression effect of PSM-E was weaker than PSMA (P<0.05), and accordingly, invasiveness of interfering LNCaP cells was enhanced compared with the vector negative control (P<0.05). These results showed that PSM-E could suppress proliferation, migration and invasiveness of prostate cancer cells. Its suppression effect on cell proliferation is stronger compared to PSMA and the suppression effect on invasiveness is weaker than that of PSMA.
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Affiliation(s)
- Kai-Yuan Cao
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Zang CH, Su JF, Liu YC, Tang CJ, Fang SJ, Zhang DM, Zhang YS. Excitons emissions and Raman scattering of ZnO nanoparticles embedded in BaF2 matrices by reactive magnetron sputtering. J Nanosci Nanotechnol 2011; 11:9823-9828. [PMID: 22413302 DOI: 10.1166/jnn.2011.5326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
ZnO nanoparticles embedded in BaF2 matrix were fabricated by rf magnetic sputtering technology. The optical properties of high quality ZnO nanoparticles, thermally post treated in a N2 atmosphere, were investigated by temperature-dependence photoluminescence measurement. Free exciton and localized exciton were observed at the low temperature. Free exciton peak was at 3.374 eV and localized exciton peak was at 3.420 eV, dominating the PL spectrum at 77 K. Free exciton transition was observed at 3.310 eV at room temperature, whereas the localized exciton transition was at 3.378 eV. The multiple-phonon Raman scattering spectrum showed that ZnO nanoparticles embedded in BaF2 matrix had a large deformation energy originated from lattice mismatch between ZnO and BaF2 matrix. Analysis of the fitting results from the temperature dependence of FWHM of ZnO exciton illustrated that the large value of gamma(ph) was good qualitative agreement with the large deformation potential.
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Affiliation(s)
- C H Zang
- Luoyang Institute of Science and Technology, Luoyang 471023, China
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Zhang DM, Li Z, Zhong JF, Miao L, Jiang JJ. Electronic properties of edge-functionalized zigzag graphene nanoribbons on SiO2 substrate. Nanotechnology 2011; 22:265702. [PMID: 21576802 DOI: 10.1088/0957-4484/22/26/265702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Based on first-principles calculations, electronic properties of edge-functionalized zigzag graphene nanoribbons (ZGNRs) on SiO(2) substrate are presented. Metallic or semiconducting properties of ZGNRs are revealed due to various interactions between edge-hydrogenated ZGNRs and different SiO(2)(0001) surfaces. Bivalent functional groups decorating ZGNRs serve as the bridge between active edges of ZGNRs and SiO(2). These functional groups stabilize ZGNRs on the substrate, as well as modify the edge states of ZGNRs and further affect their electronic properties. Bandgaps are opened owing to edge state destruction and distorted lattice in ZGNRs.
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Affiliation(s)
- D M Zhang
- Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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Abstract
Abstract
Our aim was to investigate whether renal impairment induced by cisplatin altered the pharmacokinetics of antofloxacin. Antofloxacin (7.5 mg kg−1, i.v.) was given to normal or renally impaired rats (induced by cisplatin). Concentrations of antofloxacin in plasma and urine were measured using HPLC. Pharmacokinetic parameters were estimated. The plasma concentrations of antofloxacin in the renally impaired rats were significantly higher than those in the normal rats, accompanied by significant increase of the area under the plasma concentration-time curve (AUC) (968.78 ± 259.39 μg min mL−1 versus 509.84 ± 46.19 μg min mL−1 in normal rats P < 0.05). The system clearance (CL) and renal clearance (CLR) of antofloxacin decreased from 12.66 ± 1.15 mL kg−1 min−1 and 3.21 ± 1.80 mLkg−1 min−1 in normal rats, to 6.63 ± 2.82 mLkg−1 min−1 and 0.31 ± 0.15 mLkg−1 min−1, respectively. No differences between two treatments in half-life and mean residence time were found. We concluded that renal impairment induced by cisplatin significantly altered the pharmacokinetics of antofloxacin and resulted in decrease of the renal elimination.
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Affiliation(s)
- X Y Pang
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
| | - L Liu
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
| | - D M Zhang
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
| | - G J Wang
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
| | - L Xie
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
| | - X D Liu
- Jiangsu Key Laboratory for Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, PR China
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Zhang DM, Lu JH, Zhong NS. Pathogenesis of severe acute respiratory syndrome. Chin Med J (Engl) 2008; 121:1722-1731. [PMID: 19024106] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Affiliation(s)
- Ding-Mei Zhang
- School of Public Health, Laboratory for Tropical Disease Control and Prevention, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
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Si H, Guo ZM, Hao YT, Liu YG, Zhang DM, Rao SQ, Lu JH. Rabies trend in China (1990-2007) and post-exposure prophylaxis in the Guangdong province. BMC Infect Dis 2008; 8:113. [PMID: 18717989 PMCID: PMC2532688 DOI: 10.1186/1471-2334-8-113] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [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: 01/13/2008] [Accepted: 08/21/2008] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Rabies is a major public-health problem in developing countries such as China. Although the recent re-emergence of human rabies in China was noted in several epidemiological studies, little attention was paid to the reasons behind this phenomenon paralleling the findings of the previous reports. The purpose of this study is thus first to characterize the current trends of human rabies in China from 1990 to 2007, and then to define better recommendations for improving the post-exposure prophylaxis (PEP) schedules delivered to rabies patients. METHODS The most updated epidemiological data for 22527 human rabies cases from January 1990 to July 2007, retrieved from the surveillance database of reportable diseases managed by the Ministry of Health of China, were analysed. To investigate the efficiency for the post-exposure treatment of rabies, the details of 244 rabies patients, including their anti-rabies treatment of injuries or related incidents, were ascertained in Guangdong provincial jurisdiction. The risk factors to which the patients were predisposed or the regimens given to 80 patients who received any type of PEP were analysed to identify the reasons for the PEP failures. RESULTS The results from analysis of the large number of human rabies cases showed that rabies in China was largely under control during the period 1990-1996. However, there has been a large jump in the number of reported rabies cases since 2001 up to a new peak (with an incidence rate of 0.20 per 100000 people) that was reached in 2004, and where the level has remained until present. Then, we analysed the PEP in 244 rabies cases collected in the Guangdong province in 2003 and 2004, and found that 67.2% of the patients did not seek medical services or did not receive any PEP. Further analysis of PEP for the 80 rabies patients who received any type of PEP indicated that almost all of the patients did not receive proper or timely treatment on the wounds or post-exposure vaccination or rabies immunoglobulins. CONCLUSION While the issue of under-reporting of rabies in previous years may well be a factor in the apparent upwards trend of human rabies in recent years, the analysis of PEP in the Guangdong province provides evidence that suggests that the failure to receive PEP was a major factor in the number of human cases in China. Thus, the data underline the need for greatly improved availability and timely application of high-quality anti-rabies biologicals, both vaccines and immunoglobulins, in the treatment of human bite victims. Controlling dog rabies through pet vaccination schemes may also play a huge role in reducing the rate of human exposure. Education of the public, health care staff and veterinarians will also help to change the current situation.
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Affiliation(s)
- Han Si
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
- Laboratory for Tropical Disease Control and Prevention (Key Laboratories of the Ministry of Education of China), Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Zhong-Min Guo
- Centre for Experimental Animal, Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Yuan-Tao Hao
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Yu-Ge Liu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
- Laboratory for Tropical Disease Control and Prevention (Key Laboratories of the Ministry of Education of China), Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Ding-Mei Zhang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
- Laboratory for Tropical Disease Control and Prevention (Key Laboratories of the Ministry of Education of China), Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Shao-Qi Rao
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
- Departments of Molecular Cardiology and Cardiovascular Medicine, the Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Jia-Hai Lu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, PR China
- Laboratory for Tropical Disease Control and Prevention (Key Laboratories of the Ministry of Education of China), Sun Yat-Sen University, Guangzhou 510080, PR China
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Liao JW, Lu JH, Guo ZM, Wang GL, Zhang DM, Chen LJ, Zheng HY, Zhong NS. A retrospective serological study of severe acute respiratory syndrome cases in Guangdong province, China. Chin Med J (Engl) 2007; 120:718-20. [PMID: 17517191] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023] Open
Affiliation(s)
- Jia-Wei Liao
- School of Public Health, Sun Yat-sen University, Guangzhou, China
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Hou T, Zhang JZ, Kong LJ, Zhang XE, Hu P, Zhang DM, Li N. Morphologies of fibroblast cells cultured on surfaces of PHB films implanted by hydroxyl ions. J Biomater Sci Polym Ed 2006; 17:735-46. [PMID: 16909942 DOI: 10.1163/156856206777656508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polyhydroxybutyrate (PHB) films were implanted with 40 keV hydroxyl ions with fluences ranging from 1 x 10(12) to 1 x 10(15) ions/cm2, respectively. The as-implanted PHB films were characterized by scanning electron microscopy (SEM), electron spectroscopy for chemical analysis (ESCA) and water contact angle measurements. The surface structures and properties of the as-implanted PHB films were closely related with hydroxyl ion fluence. They were further investigated by inoculating 3T6 fibroblasts cells on their surfaces. Morphologies of the 3T6 fibroblast cells cultured on surfaces of the as-implanted PHB films were observed by SEM. Characterization of the cultural 3T6 cells was analyzed qualitatively. The preliminary experimental results reveal that the bioactivity of the PHB films modified by hydroxyl ion implantation was improved at different levels, and the fluence of 1 x 10(13) ions/cm2 is optimal for PHB film.
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Affiliation(s)
- T Hou
- Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Zhang DM, Pan WQ, Qian L, Duke M, Shen LH, McManus DP. Investigation of recombinant Schistosoma japonicum paramyosin fragments for immunogenicity and vaccine efficacy in mice. Parasite Immunol 2006; 28:77-84. [PMID: 16441505 DOI: 10.1111/j.1365-3024.2005.00814.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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: 11/28/2022]
Abstract
Schistosoma japonicum paramyosin, a 97 kDa myofibrillar protein, is a recognized vaccine candidate against schistosomiasis. To improve its expression and to identify protective epitopic regions on paramyosin, the published Chinese Schistosoma japonicum paramyosin cDNA sequence was redesigned using Pichia codon usage and divided into four overlapping fragments (fragments 1, 2, 3, 4) of 747, 651, 669 and 678 bp, respectively. These gene fragments were synthesized and expressed in Pichia pastoris (fragments 2 and 3) or E. coli (fragments 1 and 4). The recombinant proteins were produced at high level and purified using a two-step process involving Ni-NTA affinity chromatography and gel filtration. BALB/c mice were immunized subcutaneously three times at 2-week-intervals with the purified proteins formulated in adjuvant Quil A. The protein fragments were highly immunogenic, inducing high, though variable, ELISA antibody titres, and each was shown to resemble native paramyosin in terms of its recognition by the anti-fragment antibodies in Western blotting. The immunized mice were subjected to cercarial challenge 2 weeks after the final injection and promising protective efficacy in terms of significant reductions in worm burdens, worm-pair numbers and liver eggs in the vaccinated mice resulted. There was no apparent correlation between the antibody titres generated and protective efficacy, as all fragments produced effective but similar levels of protection.
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Affiliation(s)
- D M Zhang
- Department of Etiologic Biology, Second Military Medical University, Shanghai, China
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Lu JH, Guo ZM, Han WY, Wang GL, Zhang DM, Wang YF, Sun SY, Yang QH, Zheng HY, Wong BL, Zhong NS. Preparation and development of equine hyperimmune globulin F(ab')2 against severe acute respiratory syndrome coronavirus. Acta Pharmacol Sin 2005; 26:1479-84. [PMID: 16297347 PMCID: PMC7091834 DOI: 10.1111/j.1745-7254.2005.00210.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2005] [Accepted: 08/10/2005] [Indexed: 11/11/2022] Open
Abstract
AIM The resurgence of severe acute respiratory syndrome (SARS) is still a threat because the causative agent remaining in animal reservoirs is not fully understood, and sporadic cases continue to be reported. Developing high titers of anti-SARS hyperimmune globulin to provide an alternative pathway for emergent future prevention and treatment of SARS. METHODS SARS coronavirus (CoV)F69 (AY313906) and Z2-Y3 (AY394989) were isolated and identified from 2 different Cantonese onset SARS patients. Immunogen was prepared from SARS-CoV F69 strain. Six health horses were immunized 4 times and serum was collected periodically to measure the profile of specific IgG and neutralizing antibodies using indirect enzyme-linked immunosorbent assay and a microneutralization test. Sera were collected in large amounts at the peak, where IgG was precipitated using ammonium sulphate and subsequently digested with pepsin. The product was then purified using anion-exchange chromatography to obtain F(ab')2 fragments. RESULTS The specific IgG and neutralizing antibody titers peaked at approximately week 7 after the first immunization, with a maximum value of 1:14210. The sera collected at the peak were then purified. Fragment of approximately 15 g F(ab')2 was obtained from 1litre antiserum and the purity was above 90% with the titer of 1:5120, which could neutralize the other strain (SARS-CoV Z2-Y3) as well. CONCLUSION This research provides a viable strategy for the prevention and treatment of SARS coronavirus infection with equine hyperimmune globulin, with the purpose of combating any resurgence of SARS.
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Affiliation(s)
- Jia-Hai Lu
- Sun Yat-sen University, Guangzhou 510080, China.
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Lu JH, Zhang DM, Wang GL, Guo ZM, Li J, Tan BY, Ou-Yang LP, Ling WH, Yu XB, Zhong NS. Sequence analysis and structural prediction of the severe acute respiratory syndrome coronavirus nsp5. Acta Biochim Biophys Sin (Shanghai) 2005; 37:473-9. [PMID: 15999208 PMCID: PMC7110076 DOI: 10.1111/j.1745-7270.2005.00066.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Abstract
The non‐structural proteins (nsp or replicase proteins) of coronaviruses are relatively conserved and can be effective targets for drugs. Few studies have been conducted into the function of the severe acute respiratory syndrome coronavirus (SARS‐CoV) nsp5. In this study, bioinformatics methods were employed to predict the secondary structure and construct 3‐D models of the SARS‐CoV GD strain nsp5. Sequencing and sequential comparison was performed to analyze the mutation trend of the polymerase nsp5 gene during the epidemic process using a nucleotide‐nucleotide basic local alignment search tool (BLASTN) and a protein‐protein basic local alignment search tool (BLASTP). The results indicated that the nsp5 gene was steady during the epidemic process and the protein was homologous with other coronavirus nsp5 proteins. The protein encoded by the nsp5 gene was expressed in COS‐7 cells and analyzed by sodium dodecylsulfate‐polyacrylamide gel electrophoresis (SDS‐PAGE). This study provided the foundation for further exploration of the protein's biological function, and contributed to the search for anti‐SARS‐CoV drugs. Edited by Bing SUN
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Affiliation(s)
- Jia-Hai Lu
- The Public Health School of Sun Yat-Sen University, Guangzhou 510080, China.
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45
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Zhang DM, Pan WQ, Lu DR. [Specific antibodies against recombinant MSP1 of Plasmodium falciparum strongly inhibit the parasite growth in vitro]. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2002; 34:318-22. [PMID: 12019444] [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
In order to produce large amounts of protein for vaccine trials, a synthetic msp1-42 gene was inserted into Pichia pastoris expression vector and the plasmid was introduced into Pichia pastoris SMD1168 by electroporation. The expressed MSP1-42 was secreted into the protein-free medium. To measure the conformational properties of MSP1-42,16 monoclonal antibodies (11 recognizing conformational epitopes) were allowed to interact with the Pichia-derived MSP1-42, and all antibodies specific for conserved and K1 protype interacted with the protein. Interestingly, three monoclonal antibodies (e.g. 9.8, 13.1 and 7.3), that were shown not to interact with CHO-derived MSP1, could interact with the Pichia-derived MSP1-42. Rabbits were immunized with recombinant MSP1-42 formulated with CFA adjuvant four times. The rabbits were bled on the day 3 after last immunization, and total IgG isolated by protein A column from the immunized rabbits was shown to strongly inhibit the parasite growth in vitro dose-dependently, whereas IgG from rabbit with adjuvant had no inhibition.
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Affiliation(s)
- D M Zhang
- Department of Etiological Biology of Second Military Medical University, Shanghai 200433, China.
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46
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Zhoung HJ, Zhang DM, Zhou M. [Effects of losartan on renal ultrastructure in diabetic rats]. Hunan Yi Ke Da Xue Xue Bao 2001; 26:200-2. [PMID: 12536679] [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: 02/28/2023]
Abstract
OBJECTIVE To observe the effects of losartan on renal ultrastructure in streptozotocin diabetic rats. METHODS Male SD rats were randomly divided into 2 groups: normal control group (NC group) and diabetic group. Diabetic group was induced by streptozocin (65 mg.kg-1) abdominal injection. Four weeks later, diabetic rats were further divided into 2 groups: diabetic rats treated with losartan (DL group, 20 mg.kg-1.d-1, by gavage) and diabetic unteated control group (DC group). Renal ultrastructure of each group was observed before and after 12 weeks of treatment respectively. RESULTS The ultrastructure alterations in DL group including mesangial expansion and thickening of glomerular basement membrane (GBM), were lighter than those in DC group. CONCLUSION Losartan can prevent renal pathological progress in diabetic rats. It is suggested that losartan may have some renal protective effects.
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Affiliation(s)
- H J Zhoung
- Department of Endocrinology, Xiangya Hospital, Central South University, Changsha 410008, China
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Yu G, Chen F, Nishimura M, Steiner H, Tandon A, Kawarai T, Arawaka S, Supala A, Song YQ, Rogaeva E, Holmes E, Zhang DM, Milman P, Fraser P, Haass C, St George-Hyslop P. Mutation of conserved aspartates affect maturation of presenilin 1 and presenilin 2 complexes. Acta Neurol Scand Suppl 2001; 176:6-11. [PMID: 11261807 DOI: 10.1034/j.1600-0404.2000.00301.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Presenilin (PS1 and PS2) holoproteins are transiently incorporated into low molecular weight (MW) complexes. During subsequent incorporation into a higher MW complex, they undergo endoproteolysis to generate stable N- and C-terminal fragments (NTF/CTF). Mutation of either of two conserved aspartate residues in transmembrane domains inhibits both presenilin-endoproteolysis and the proteolytic processing of APP and Notch. We show that aspartate-mutant holoprotein presenilins are not incorporated into the high molecular weight, NTF/CTF-containing complexes. Aspartate-mutant presenilin holoproteins also preclude entry of endogenous wild-type PS1/PS2 into the high molecular weight complexes, but do not affect the incorporation of wild-type holoproteins into lower molecular weight holoprotein complexes. These data suggest that the loss-of-function aspartate-mutants cause altered PS complex maturation, and argue that the functional presenilin moieties are contained in the high molecular weight presenilin NTF/CTF-containing complexes.
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Affiliation(s)
- G Yu
- Centre for Research in Neurodegenerative Diseases, Department of Medical, Biophysics, University of Toronto, Ontario, Canada
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Yang SY, Pan GM, Meng GF, Zhang DM. [Study of diphacinone in biological samples by high performance liquid chromatography/diode array detector]. Se Pu 2001; 19:245-7. [PMID: 12541808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
An analytical approach has been developed for high performance liquid chromatographic determination of diphacinone extracted from liver, blood, urine and kidney of rabbit by solid phase extraction (SPE) cartridges (using SAX, CN or SILICA GEL) with coumarin as the internal standard. Diphacinone was separated by reversed-phase gradient chromatography with DAD detection at 286 nm. The Analytical column was Hypersil BDS C18(150 mm x 4.6 mm i.d., 5 microns) and the guard column was Phenomenex ODS(4 mm x 3.0 mm i.d.). The mobile phase was a gradient mixture of aqueous solution (A) and methanol solution (B) both containing 0.5% ion pair A. There was a good linear relationship between the concentration of diphacinone and the ratio of peak areas of diphacinone and coumarin (internal standard) (r = 0.9999). The linear range was 1 mg/L-100 mg/L, and the lower detection limit was 5 ng (S/N = 3). The average recoveries of diphacinone in urine, blood and liver were 88.4% (n = 3, RSD = 1.25%, SPE by CN column), 82.2% (n = 3, RSD = 1.67%, SPE by SAX column), 91.0% (n = 3, RSD = 2.77%, SPE by SILICA GEL column), respectively.
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Affiliation(s)
- S Y Yang
- Forensic Medical Examination Center, Beijing Bureau of Public Security, Beijing 100085, China
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Abstract
Nitric oxide (NO)-mediated neurotoxicity may be an appropriate pathophysiological model with which to explain a variety of inner ear diseases characterized by acute or progressive hearing loss, tinnitus and vertigo. The localization of NO synthase (NOS) isoforms was examined in the inner ear of the pigmented guinea pig after intratympanic injection of 1 mg lipopolysaccharide (LPS) or 5 mg gentamicin (GM) using an immunohistochemical method, revealing the expression of NOS II in the inner ear. Production of NO in the isolated organ of Corti and utricle or in the isolated vestibular and cochlear hair cells after stimulation with L-arginine, glutamate, GM and LPS was investigated using the fluorescence indicator 4,5-diaminofluorescein diacetate. The fluorescence intensity of the sensory cells was augmented by stimulation with L-arginine, glutamate, GM and LPS. A significant increase in NO production was also noted in the LPS-treated animals. These findings imply that NO from constitutive NOS may mediate ototoxicity in the early phase, whereas NO from NOS II may contribute to the late phase of tissue damage in the inner ear. Based on this hypothesis, reduction of glutamatergic excitotoxicity and inhibition of NOS, scavenging superoxide and scavenging peroxynitrite are thought to attenuate NO-mediated otoneurotoxicity.
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Affiliation(s)
- M Takumida
- Department of Otolaryngology, Hiroshima University School of Medicine, Japan.
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Chen F, Yang DS, Petanceska S, Yang A, Tandon A, Yu G, Rozmahel R, Ghiso J, Nishimura M, Zhang DM, Kawarai T, Levesque G, Mills J, Levesque L, Song YQ, Rogaeva E, Westaway D, Mount H, Gandy S, St George-Hyslop P, Fraser PE. Carboxyl-terminal fragments of Alzheimer beta-amyloid precursor protein accumulate in restricted and unpredicted intracellular compartments in presenilin 1-deficient cells. J Biol Chem 2000; 275:36794-802. [PMID: 10962005 DOI: 10.1074/jbc.m006986200] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [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: 11/06/2022] Open
Abstract
Absence of functional presenilin 1 (PS1) protein leads to loss of gamma-secretase cleavage of the amyloid precursor protein (betaAPP), resulting in a dramatic reduction in amyloid beta peptide (Abeta) production and accumulation of alpha- or beta-secretase-cleaved COOH-terminal fragments of betaAPP (alpha- or beta-CTFs). The major COOH-terminal fragment (CTF) in brain was identified as betaAPP-CTF-(11-98), which is consistent with the observation that cultured neurons generate primarily Abeta-(11-40). In PS1(-/-) murine neurons and fibroblasts expressing the loss-of-function PS1(D385A) mutant, CTFs accumulated in the endoplasmic reticulum, Golgi, and lysosomes, but not late endosomes. There were some subtle differences in the subcellular distribution of CTFs in PS1(-/-) neurons as compared with PS1(D385A) mutant fibroblasts. However, there was no obvious redistribution of full-length betaAPP or of markers of other organelles in either mutant. Blockade of endoplasmic reticulum-to-Golgi trafficking indicated that in PS1(-/-) neurons (as in normal cells) trafficking of betaAPP to the Golgi compartment is necessary before alpha- and beta-secretase cleavages occur. Thus, although we cannot exclude a specific role for PS1 in trafficking of CTFs, these data argue against a major role in general protein trafficking. These results are more compatible with a role for PS1 either as the actual gamma-secretase catalytic activity or in other functions indirectly related to gamma-secretase catalysis (e.g. an activator of gamma-secretase, a substrate adaptor for gamma-secretase, or delivery of gamma-secretase to betaAPP-containing compartments).
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Affiliation(s)
- F Chen
- Centre for Research in Neurodegenerative Diseases, Departments of Laboratory Medicine and Pathobiology, Medical Biophysics and Medicine, University of Toronto, Ontario, Canada
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