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Cao HT, Deng CY, Yan XM, Lin ZJ. Analysis of Correlation Between Coronary Heart Disease and Genetic Polymorphism Detected by Gold Magnetic Nanoparticles Chromatography. J Cardiovasc Transl Res 2024; 17:467-475. [PMID: 37847462 DOI: 10.1007/s12265-023-10439-w] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/13/2023] [Indexed: 10/18/2023]
Abstract
It aimed to explore the correlation of Glu504Lys locus mutation of aldehyde dehydrogenase-2 (ALDH2) with coronary heart disease (CHD) based on gold magnetic nanoparticles (GMNPs) chromatography and amplification refractory mutation system-PCR (ARMS-PCR). 120 CHD patients admitted to the cardiovascular Department of Wenling First People's Hospital affiliated to Wenzhou Medical University from December 2020 to December 2021 were selected as Case group and 80 non-CHD patients admitted during the same period were selected as Ctrl group. The venous blood and indexes of Total Cholesterol (TC), Triglyceride (TG), Low Density Lipoprotein Cholesterol (LDL-C), High Density Lipoprotein Cholesterol (HDL-C), and Fasting Blood Glucose (FBS) were collected. The ARMS-PCR GMNPs chromatography based on ARMS-PCR and immunochromatography assay was adopted to detect gene polymorphism of ALDH2. Correlation between ALDH2 gene polymorphism and risk factors of CHD was analyzed via logistic regression. In contrast to Ctrl group, the genotypes of GG, GA, and AA in Case group were evidently different (P < 0.05), and the frequency of A allelic gene was obviously increased (P < 0.05). Under the dominant model, frequency of GA + AA genotype in Case group was remarkably higher in contrast to Ctrl group (P < 0.05). Under the recessive model, there was no obvious difference in genotype frequency between two groups. In contrast to Ctrl group, TC, LDL-C, and FBS in Case group were notably increased (P < 0.05), while HDL-C was notably decreased (P < 0.05). The distribution frequency of abnormal LDL-C, HDL-C, and FBS in Case group was notably higher in contrast to Ctrl group (P < 0.05). LDL-C and FBS had no obvious effect on the genotypes and frequency distribution of alleles in CHD patients. However, the frequency distribution of genotypes of GA and AA and A allelic gene in patients with abnormal HDL-C was notably lower in contrast to those with normal HDL-C (P < 0.05). Logistic regression analysis showed that abnormal HDC-C with A allelic gene were independent risk factors for CHD (P = 0.001, OR = 1.934). The gene polymorphism of Glu504Lys locus of ALDH2 was closely related to the pathogenesis of CHD, A allelic gene may be a susceptibility gene for CHD, and patients with abnormal HDC-C and carried A allelic gene had relatively higher incidence of CHD.
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Affiliation(s)
- Hai-Tao Cao
- Department of Cardiovascular Medicine, Wenling First People's Hospital affiliated to Wenzhou Medical University, Wenling, 317500, Zhejiang Province, China
| | - Cong-Ying Deng
- Ultrasound Imaging Department, Zhongshan People's Hospital Affiliated to Sun Yat-Sen University, Zhongshan, 528400, Guangdong Province, China
| | - Xin-Min Yan
- Central Lab, Second Affiliated Hospital of Nanjing Medical University, 68 Gehu Middle Road, Changzhou, 213000, Jiangsu Province, China
| | - Zhi-Juan Lin
- Department of Neurology, Wenling First People's Hospital affiliated to Wenzhou Medical University, Wenling, 317500, Zhejiang Province, China.
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Yan XM, Yin FZ, Yu T, Zhang XH, Zhang X, Xu CP, Zhou XX. [Differentiation of temporal lobe epilepsy and temporal plus epilepsy using radiomics nomogram based on MPRAGE images]. Zhonghua Yi Xue Za Zhi 2024; 104:704-707. [PMID: 38418170 DOI: 10.3760/cma.j.cn112137-20231024-00883] [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: 03/01/2024]
Abstract
A total of 82 patients with temporal lobe epilepsy (TLE) and temporal plus epilepsy (TPE)admitted in Xuanwu Hospital from January 1, 2019, to January 1, 2021 were restrospectively analyzed, including 41 males and 41 females, aged 2 to 52 (24±10) years. The patients were randomly divided into the training set (58 cases) and test set (24 cases) by Python. FreeSurfer software was used to segment the cortex of the affected hemisphere, defining 33 regions of interest (ROIs), and radiomics features were extracted by Python. After selecting features using the filter-based feature selection method, a radiomics model was constructed with a logistic regression classifier, and radiomics scores were calculated. Combining clinical characteristics with radiomics scores, a nomogram model was constructed using R software, the predictive accuracy of the model was assessed with the concordance index (C-index), and the model's goodness-of-fit was tested with the Hosmer-Lemeshow method. The results showed statistically significant differences between TLE and TPE patients in disease duration, intracranial electrode implantation, and hippocampal sclerosis (both P<0.05). The accuracy of the radiomics model in the training set and the test set was 91.4% and 87.5%, respectively. The nomogram model uses C-index to predict accuracy. Hosmer-Lemeshow method was used to test the goodness of fit, with AUCs of 0.95 (95%CI: 0.853-0.991) in the training set and 0.84 (95%CI: 0.676-0.999) in the test set. The study indicates that the radiomics nomogram model based on MPRAGE sequences can effectively differentiate TLE from TPE, providing reference for the development of personalized treatment plans in clinical practice.
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Affiliation(s)
- X M Yan
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - F Z Yin
- Tianjin Huanhu Hospital, Tianjin 300350, China
| | - T Yu
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - X H Zhang
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - X Zhang
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - C P Xu
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - X X Zhou
- Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
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Yan XM, Li PJ, Li W, Wang XM, Yu S. [Alterations in erythrocytic oligomeric alpha-synuclein in patients with Parkinson's disease and multiple system atrophy]. Zhonghua Yi Xue Za Zhi 2023; 103:2933-2939. [PMID: 37752052 DOI: 10.3760/cma.j.cn112137-20230607-00957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Objective: To analyze the content of α-synuclein oligomer(O-α-Syn) in erythrocytes in patients with Parkinson's disease (PD) and multiple system atrophy (MSA) and the correlation with clinical symptoms. Methods: Two hundred and ninety-six PD patients and 85 MSA patients were recruited from the Department of Functional Neurosurgery and Neurology of Xuanwu Hospital, Capital Medical University from July 2020 to October 2021. Four hundred and three healthy controls (HC) were recruited from the Beijing Longitudinal Study of Aging community cohort during the same period. The levels of RBC-O-α-Syn were measured by enzyme-linked immunosorbent assay (ELISA). Univariate linear regression model was used to analyze the correlation between the content of RBD-O-α-Syn and various motor and non-motor functional scores, such as Unified Parkinson Disease Rating Scale (UPDRS) Ⅲ, Unified Multiple System Atrophy Rating Scale (UMSARS) Ⅲ, Mini-Mental State Examination (MMSE), rapid eye movement sleep disorder questionnaire-HongKong(RBDQ-HK) and Montreal Cognitive Assessment (MoCA). Receiver operating characteristic (ROC) curves was used to evaluate the specificity, sensitivity, and the area under the curve (AUC) of RBC-O-α-Syn in distinguishing PD and MSA patients from HC subjects. Results: The average age of HC subjects was (70±8) years old, the average age of PD patients was (64±9) years old, including 115 (38.9%) cases with tremor dominant PD (TD-PD), 132 cases (44.6%) of postural instability disorder predominant PD (PIGD-PD), and 142 cases (48.0%) of patients with H-Y stage 2. UPDRS Ⅲ score was 31.2±17.8. The mean age of MSA patients was (64±9) years, with the mean UMSARS Ⅱ score of 18.9±10.3. The non-motor symptoms of PD and MSA patients were significantly different from those of HC subjects (P<0.001). The levels of RBC-O-α-Syn in PD [(50±17) ng/mg] and MSA [(52±19) ng/mg] were significantly higher than those in HC subjects [(21±10) ng/mg] (P<0.001). The sensitivity and specificity of RBC-O-α-Syn in distinguishing PD patients and HC subjects were 87.16% (95%CI: 82.87%-90.50%) and 86.10% (95%CI: 82.38%-89.14%), with an AUC of 0.933 (95%CI: 0.914-0.951), and the sensitivity and specificity in distinguishing MSA patients and HC subjects were 85.88% (95%CI: 76.93%-91.74%) and 81.39% (95%CI: 77.30%-84.89%), with an AUC of 0.921 (95%CI: 0.884-0.957). The levels of RBC-O-α-Syn in PD patients with rapid eye movement sleep behavior disorder (RBD) were higher than that in PD patients without RBD [(53±16) ng/mg vs (48±17) ng/mg, P=0.029].The content of RBC-O-α-Syn in female PD patients and HC subjects was higher than that in male, but there was no significant difference between subjects of different ages and disease duration (P>0.05). In addition, RBC-O-α-Syn content was positively correlated with UPDRS Ⅲ (r=0.18, P=0.002) and the score of rapid eye movement sleep behavior disorder questionnaire(Hong Kong) (RBDQ-HK)(r=0.19, P<0.001). But there was no correlation with H-Y stage, non-motor symptoms scale (NMSS), MMSE, Moca, Hamilton Depression Scale (HAMD), Hamilton Anxiety Scale (HAMA) scores (all P>0.05). There was no correlation between RBC-O-α-Syn content and UMSARS Ⅱ, NMSS, MMSE, MoCA, HAMD, HAMA in patients with MSA (all P>0.05). Conclusions: Levels of RBC-O-α-Syn are significantly increased in PD and MSA patients. There are positive correlations between levels of RBC-O-α-Syn and scores of UPDRS Ⅲ and RBDQ-HK.
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Affiliation(s)
- X M Yan
- Department of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053,China
| | - P J Li
- Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing 100053,China
| | - W Li
- Department of Histology and Embryology, Weifang Medical University, Weifang 261053,China
| | - X M Wang
- Department of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053,China
| | - S Yu
- Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing 100053,China
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Guo YH, He ZL, Ji QL, Zhou HJ, Meng FL, Hu XF, Wei XY, Ma JC, Yang YH, Zhao W, Long LJ, Wang X, Fan JM, Yu XJ, Zhang JZ, Hua D, Yan XM, Wang HB. [Population structure of food-borne Staphylococcus aureus in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:982-989. [PMID: 37380423 DOI: 10.3760/cma.j.cn112338-20221206-01043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Objective: To understand the population structure of food-borne Staphylococcus (S.) aureus in China. Methods: Whole genome sequencing was used to analyze 763 food-borne S. aureus strains from 16 provinces in China from 2006 to 2020. Multilocus sequence typing (MLST), staphylococcal protein A gene (spa) typing, and staphylococcal chromosome cassettemec (SCCmec) typing were conducted, and minimum spanning tree based on ST types (STs) was constructed by BioNumerics 7.5 software. Thirty-one S. aureus strains isolated from imported food products were also included in constructing the genome phylogenetic tree. Results: A total of 90 STs (20 novel types) and 160 spa types were detected in the 763 S. aureus isolates. The 72 STs (72/90, 80.0%) were related to 22 clone complexes. The predominant clone complexes were CC7, CC1, CC5, CC398, CC188, CC59, CC6, CC88, CC15, and CC25, accounting for 82.44% (629/763) of the total. The STs and spa types in the predominant clone complexes changed over the years. The methicillin-resistant S. aureus (MRSA) detection rate was 7.60%, and 7 SCCmec types were identified. The ST59-t437-Ⅳa (17.24%, 10/58), ST239-t030-Ⅲ (12.07%, 7/58), ST59-t437-Ⅴb (8.62%, 5/58), ST338-t437-Ⅴb (6.90%, 4/58) and ST338-t441-Ⅴb (6.90%, 4/58) were the main types in MRSA strains. The genome phylogenetic tree had two clades, and the strains with the same CC, ST, and spa types clustered together. All CC7 methicillin sensitive S. aureus strains were included in Clade1, while 21 clone complexes and all MRSA strains were in Clade2. The MRSA strains clustered according to the SCCmec and STs. The strains from imported food products in CC398, CC7, CC30, CC12, and CC188 had far distances from Chinese strains in the tree. Conclusions: In this study, the predominant clone complexes of food-borne strains were CC7, CC1, CC5, CC398, CC188, CC59, CC6, CC88, CC15, and CC25, which overlapped with the previously reported clone complexes of hospital and community-associated strains in China, suggesting that close attention needs to be paid to food, a vehicle of pathogen transmission in community and food poisoning.
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Affiliation(s)
- Y H Guo
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z L He
- Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Interdisciplinary Innovation Institute of Medicine and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
| | - Q L Ji
- Chinese Academy of Inspection and Quarantine, Beijing 100020, China
| | - H J Zhou
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - F L Meng
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X F Hu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100032, China
| | - X Y Wei
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J C Ma
- Microbial Resource and Big Data Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Y H Yang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Zhao
- Institute of Microbiology, Jilin Provincial Center for Disease Control and Prevention, Changchun 130051, China
| | - L J Long
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Wang
- College of Food Science and Engineering, Northwest Agriculture & Forestry University, Xi'an 712100, China
| | - J M Fan
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X J Yu
- Hainan Center for Disease Control and Prevention, Haikou 570203, China
| | - J Z Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - D Hua
- Hainan Center for Disease Control and Prevention, Haikou 570203, China
| | - X M Yan
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H B Wang
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China Chaoyang District Center for Disease Control and Prevention, Beijing 100020, China
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Yang YH, Ku X, Gong YN, Meng FL, Dongbo DP, Guo YH, Wei XY, Long LJ, Fan JM, Zhang MJ, Zhang JZ, Yan XM. [Prediction of superantigen active sites and clonal expression of staphylococcal enterotoxin-like W]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:629-635. [PMID: 37147837 DOI: 10.3760/cma.j.cn112338-20220822-00725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Objective: The docking and superantigen activity sites of staphylococcal enterotoxin-like W (SElW) and T cell receptor (TCR) were predicted, and its SElW was cloned, expressed and purified. Methods: AlphaFold was used to predict the 3D structure of SElW protein monomers, and the protein models were evaluated with the help of the SAVES online server from ERRAT, Ramachandran plot, and Verify_3D. The ZDOCK server simulates the docking conformation of SElW and TCR, and the amino acid sequences of SElW and other serotype enterotoxins were aligned. The primers were designed to amplify selw, and the fragment was recombined into the pMD18-T vector and sequenced. Then recombinant plasmid pMD18-T was digested with BamHⅠand Hind Ⅲ. The target fragment was recombined into the expression plasmid pET-28a(+). After identification of the recombinant plasmid, the protein expression was induced by isopropyl-beta-D- thiogalactopyranoside. The SElW expressed in the supernatant was purified by affinity chromatography and quantified by the BCA method. Results: The predicted three-dimensional structure showed that the SElW protein was composed of two domains, the amino-terminal and the carboxy-terminal. The amino-terminal domain was composed of 3 α-helices and 6 β-sheets, and the carboxy-terminal domain included 2 α-helices and 7 antiparallel β-sheets composition. The overall quality factor score of the SElW protein model was 98.08, with 93.24% of the amino acids having a Verify_3D score ≥0.2 and no amino acids located in disallowed regions. The docking conformation with the highest score (1 521.328) was selected as the analysis object, and the 19 hydrogen bonds between the corresponding amino acid residues of SElW and TCR were analyzed by PyMOL. Combined with sequence alignment and the published data, this study predicted and found five important superantigen active sites, namely Y18, N19, W55, C88, and C98. The highly purified soluble recombinant protein SElW was obtained with cloning, expression, and protein purification. Conclusions: The study found five superantigen active sites in SElW protein that need special attention and successfully constructed and expressed the SElW protein, which laid the foundation for further exploration of the immune recognition mechanism of SElW.
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Affiliation(s)
- Y H Yang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Ku
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y N Gong
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - F L Meng
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - D P Dongbo
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China University of Chinese Academy of Sciences, Beijing 100049, China Big Data Academy, Zhongke, Zhengzhou 450046, China
| | - Y H Guo
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China
| | - X Y Wei
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L J Long
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China China Medical University, Shenyang 110122, China
| | - J M Fan
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M J Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Z Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X M Yan
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Hu Y, Huang Z, Wang Y, Liang H, Pan XJ, Chen YP, Yuan L, Yang SY, Chen JJ, Chen YY, Yan XM, Tao Q, Qin X, Lyu HK. [The surveillance analysis of the adverse events following immunization of the domestic 13-valent pneumococcal polysaccharide conjugate vaccine in Zhejiang Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1625-1629. [PMID: 36372754 DOI: 10.3760/cma.j.cn112150-20211115-01049] [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: 06/16/2023]
Abstract
To evaluate the safety of the domestic 13-valent pneumococcal polysaccharide conjugate vaccine-tetanus toxoid protein (PCV13-TT) after its licensure. The adverse event following immunization (AEFI) and the vaccination data of PCV13-TT in Zhejiang province from July 2020 to October 2021 were collected from national adverse event following immunization surveillance system and Zhejiang provincial immunization information system. Descriptive epidemiological method was used for this analysis. From July 2020 to October 2021, 302 317 doses of PCV13-TT were administered in children under 6 years old in Zhejiang Province and 636 AEFI case reports were received, with a reporting rate of 21.04 per 10 000 doses. Of these AEFI cases, 97.17% were mild vaccine product-related reaction (20.54 per 10 000 doses) and 95.44% occurred in the 0-1 d after vaccination (20.08 per 10 000 doses). The most common clinical diagnoses of AEFI included fever (224 cases), redness (204 cases), and induration (190 cases), while allergic rash (11 cases) was the most common diagnosis among the abnormal reactions. In conclusion,the present results bolstered that the domestic PCV13-TT was generally well tolerated in children under 6 years old in Zhejiang Province.
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Affiliation(s)
- Y Hu
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
| | - Z Huang
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - Y Wang
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
| | - H Liang
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
| | - X J Pan
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
| | - Y P Chen
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
| | - L Yuan
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - S Y Yang
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - J J Chen
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - Y Y Chen
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - X M Yan
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - Q Tao
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - X Qin
- Yuxi Walvax Biotechnology Co., Ltd, Kunming 650032,China
| | - H K Lyu
- Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou 310051,China
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Xu QY, Ding DK, Luo ZY, Zhang SS, Yan XM, Wang HX, Wang LL, Zhao G, Wang L, Zhang Q. [A case of neonatal mesenteric Kaposiform hemangioendothelioma with Kasabach-Merritt phenomenon]. Zhonghua Er Ke Za Zhi 2021; 59:139-141. [PMID: 33548963 DOI: 10.3760/cma.j.cn112140-20200820-00813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Q Y Xu
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - D K Ding
- Department of Pediatric Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Z Y Luo
- Department of Pathology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - S S Zhang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - X M Yan
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - H X Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - L L Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - G Zhao
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - L Wang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Q Zhang
- Department of Neonatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Li BB, Cai Y, Pan YZ, Li M, Fang Y, Tian T, Yan XM. [The association between corneal biomechanical parameters and visual field progression in patients with normal tension glaucoma]. Zhonghua Yan Ke Za Zhi 2019. [PMID: 29518874 DOI: 10.3760/cma.j.issn.0412-4081.2018.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 evaluate the association between corneal biomechanical parameters and visual field (VF) progression in normal tension glaucoma (NTG) using the Corvis-ST device, and to evaluate the ability of corneal biomechanical parameters to predict the VF progression. Methods: Corneal biomechanical parameters of newly diagnosed NTG patients were obtained using Corvis-ST in the baseline follow-up visit. The VF progression was defined as a 4-point increase in the Advanced Glaucoma Intervention Study (AGIS) score compared to the baseline in three consecutive follow-up visits (per 3-6 months). Corneal biomechanical parameters were compared between progressive and nonprogressive VF loss eyes using the independent-sample t test and Mann-Whitney U test. Spearman correlation analysis was used to explore the relationship between the corneal biomechanical parameters and the VF progression. Receiver operating characteristic curves were studied for the parameters and the sensitivity and specificity for distinguishing between progressive and nonprogressive glaucomatous eyes. The areas under the receiver operating characteristic curves (AUC) were also evaluated. Results: Sixty patients with NTG were enrolled in this study. Among them, 12 were lost to follow-up. A total of 48 patients completed all follow-up visits on schedule. Eleven of them were excluded due to one or more uncontrolled intraocular pressure (IOP) during the follow-up (less than 30% IOP reduction from the baseline). Thirty-seven eyes of 37 diagnosed NTG patients were enrolled. Ten eyes reached a progression endpoint. There was no significant difference in age, central corneal thickness, axial length, baseline IOP or baseline VF between the two groups. There was significant difference in Time A1 [(7.10±0.17) ms vs. (7.37±0.28) ms, t=-3.357, P=0.002], Length A1 [1.74(1.61, 1.77) mm vs. 1.78(1.77, 1.79) mm, Z=-3.036, P=0.002], Velocity A1 [0.16(0.14, 0.16) m/s vs. 0.15(0.14, 0.15) m/s, Z=-2.627, P=0.009] and DefAmpl HC [(1.22±0.13) mm vs. (1.12±0.11) mm, t=2.601, P=0.013] between progressive and nonprogressive glaucomatous eyes. Correlation analysis showed that Time A1, Length A1, Velocity A1 and DefAmpl HC were correlated with VF progression (r=-0.521, -0.463, 0.401, 0.349, P<0.05) . Time A1 demonstrated the highest AUC (0.817, P=0.001), followed by Length A1 (0.780, P=0.003), Velocity A1 (0.734, P=0.012) and DefAmpl HC (0.713, P=0.022). The cut-off set of Time A1 was 7.2 ms, the sensitivity was 80.0%, and the specificity was 82.8%. Conclusions: There were differences in corneal biomechanical parameters between eyes with progressive and nonprogressive VF loss in patients with NTG. There were lower Time A1 and Length A1 values and higher Velocity A1 and DefAmpl HC values in progressive glaucomatous eyes. This indicates a quicker response to reach first degree applanation and a larger degree of corneal deformability in progressive eyes. It is predicted that the easier deforming of the cornea, the smaller tolerance of the sclera and lamina cribros on IOP, making the optic disc more vulnerably. This may be one of the causes of glaucomatous optic nerve damage. Time A1 was the best parameter to predict the progression of VF among the corneal biomechanical parameters obtained by Corvis-ST. (Chin J Ophthalmol, 2018, 54: 171-176).
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Affiliation(s)
- B B Li
- Department of Ophthalmology, Peking University First Hospital, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100034, China
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9
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Shen T, Gao JM, Shou T, Li L, Zhang JP, Zhao Q, Yan XM. Identification of a homozygous BBS7 frameshift mutation in two (related) Chinese Miao families with Bardet-Biedl Syndrome. J Chin Med Assoc 2019; 82:110-114. [PMID: 30839500 DOI: 10.1097/jcma.0000000000000011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Bardet-Biedl Syndrome (BBS) is a genetically heterogeneous autosomal recessive disorder with a wide spectrum of clinical features. To date, mutations in 21 different genes (BBS1-21) have been identified as causing isolated or complex BBS phenotypes. In this report, we present three Chinese Miao ethnic patients who were diagnosed with BBS on the basis of characteristic clinical features and investigated the exsome of these patients. METHODS To evaluate disease genes, the Agilent SureSelect system and Illumina HiSeq 2000 platform for whole exome enrichment and sequencing (WES) were used on the proband and her mother. Variants that fit a recessive model of inheritance only were compared and filtered using public databases. Variants detected by exome sequencing were validated by Sanger sequencing. A total of 981 phenotypically normal subjects were enrolled as control data set. RESULTS A frameshift homozygous germline mutation in BBS7 was detected by WES and identified by Sanger sequencing in affected individuals. This mutation was predicted to result in premature termination of exon5 (c.389_390delAC, p.Asn130ThrfsX3; RefSeq NM_176824.2) and lead to a 133 amino acid truncated protein. The inheritance patterns in the families are consistent with autosomal recessive inheritance, and no such homozygous mutation was found in the other 981 controls. CONCLUSION This mutation has not yet been described in any reported literature, and this is the first report on BBS7 mutation in Chinese Miao families with BBS phenotypes.
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Affiliation(s)
- Tao Shen
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Jian-Mei Gao
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Tao Shou
- Oncology Department, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Li Li
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Jin-Ping Zhang
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Qian Zhao
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Xin-Min Yan
- Institute of Basic and Clinical Medicine, Key laboratory of Clinical Virology, Key Laboratory for Birth Defects and Genetic Diseases, the First People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
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Song WJ, Yan XM. [Research progress of intense pulsed light treatment on meibomian gland dysfunction and relevant dry eye diseases]. Zhonghua Yan Ke Za Zhi 2018; 54:140-143. [PMID: 29429299 DOI: 10.3760/cma.j.issn.0412-4081.2018.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Intense pulsed light (IPL) is a broad spectrum incoherent light which is produced by high-output xenon lamp. Since the invention of the first-generation IPL in 1994, IPL technology has been developing rapidly and extensively utilized in multiple fields relevant to dermatology across the world. In 2004, the fourth-generation IPL system was introduced with the optimal pulse technology (OPT) and has soon been used for cosmetic purposes all over the world. In 2002, Dr. Toyos found that the meibomian gland dysfunction (MGD) and dye eye disease (DED)symptoms of the rosacea patients who received IPL treatment have been improving significantly, therefore he started to explore the application of IPL system to treatment of dry eye disease. Several recent clinical studies have demonstrated the therapeutic potential of IPL for improving the symptoms and signs of MGD and DED. However, the published data of IPL treatment for MGD and DED is limited, the mechanism of IPL treatment for MGD and DED remained unclear and more relevant researches needed to be done in the future. This article discusses the clinical application history and general mechanism of IPL, and introduces the treatment of IPL for MGD and DED. (Chin J Ophthalmol, 2018, 54: 140-143).
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Affiliation(s)
- W J Song
- Department of Ophthalmology, the First Hospital of Peking University, Beijing 100034, China
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11
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Rong B, Tu P, Tang Y, Liu RX, Song WJ, Yan XM. [Evaluation of short-term effect of intense pulsed light combined with meibomian gland expression in the treatment of meibomian gland dysfunction]. Zhonghua Yan Ke Za Zhi 2017; 53:675-681. [PMID: 28926885 DOI: 10.3760/cma.j.issn.0412-4081.2017.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore short-term effect of intense pulsed light (IPL) combined with meibomian gland expression in treating meibomian gland dysfunction (MGD). Methods: This study was a prospective, randomized, double-masked, controlled study. Forty-four MGD patients were enrolled in the study and received three consecutive IPL treatments with an interval of 4 weeks. One eye of each patient was randomly assigned as the study eye receiving the IPL therapy with an energy of 14-16 J/cm(2), and the fellow eye was as the control eye receiving a placebo therapy with 0 J/cm(2). Meibomian gland expression was immediately performed after the IPL treatment in both eyes. Efficacy was evaluated through assessment of the meibomian gland yielding secretion score (MGYSS) , SPEED questionnaire, tear film break-up time (TBUT), cornea fluorescein staining and infrared meibography. Safety was evaluated through best spectacle corrected visual acuity, intraocular pressure, slit lamp examination and fundus examination. These examinations were performed before and after each treatment. Results: Significant improvements were observed in the MGYSS and TBUT after IPL treatments (P<0.05). The improvements compared to the baseline of MGYSS at the upper eyelid in the treatment eyes were significantly higher than those in the control eyes after the first treatment (Z=-2.036, P=0.003). The improvements compared to baseline of MGYSS at the lower eyelid and the TBUT in the treatment eyes were significantly higher than those in the control eyes after the second treatment (Z=-2.999 and -2.036, respectively P=0.007 and 0.042, respectively). SPEED and cornea fluorescein staining were decreased in both eyes after IPL treatments, but there was no statistical difference between the two eyes. No obvious complication was observed in the study. Conclusions: IPL treatment combined with meibomian gland expression is an efficient and safe therapy, and can increase meibomian gland yielding secretion, increase the TBUT, relieve the symptoms and repair the corneal epithelium defects for MGD eyes. (Chin J Ophthalmol, 2017, 53: 675-681).
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Affiliation(s)
- B Rong
- Department of Ophthalmology, Peking University First Hospital, Beijing 100034, China
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12
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Tang Y, Wu Y, Rong B, Li HL, Yang SL, Yan XM. [The effect of long-term contact lens wear on the morphology of meibomian glands]. Zhonghua Yan Ke Za Zhi 2016; 52:604-9. [PMID: 27562282 DOI: 10.3760/cma.j.issn.0412-4081.2016.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the effect of long-term contact lens (CL) wear on the morphology of meibomian glands (MGs) using meiboscore and digital analysis. METHODS Retrospective study. Sixty right eyes of sixty patients were involved in this study, and the data were analyzed retrospectively. According to the duration of CL wear, all patients were divided into three groups, nonwear group (n=21), short-term group (duration of CL wear ≤3 years, n=19) and long-term group (duration of CL wear>3 years, n=20). Digital images of MGs obtained by meibography were analyzed using Image J software, providing the area percentage of MGs loss. The meiboscores were also examined, and the data were analyzed using one-way ANOVA and Kruskal-Wallis test. RESULTS Ten out of 21 nonwearers were scored 0 point, and 11 were scored 1 point in the upper lid meiboscores, while 7 were scored 0 point, 9 were scored 1 point, and 5 were scored 2 points in the total meiboscores. Seven out of 19 short-term wearers were scored 0 point, 10 were scored 1 point, and 2 were scored 2 points in the upper lid meiboscores, while 5 were scored 0 point, 6 were scored 1 point, 6 were scored 2 points, and 2 were scored 3 points in the total meiboscores. Four out of 20 long-term wearers were scored 0 point, 7 were scored 1 point, and 9 were scored 2 points in the upper lid meiboscores, while 3 were scored 0 point, 4 were scored 1 point, 4 were scored 2 points, 4 were scored 3 points, 4 were scored 4 points, and 1 was scored 5 points in the total meiboscores. The meiboscores of the upper eyelid and total meiboscores among the three groups were significantly different (Hc=9.967, P=0.007; Hc=9.725, P=0.008). The meiboscores of the upper eyelid and total meiboscores were significantly higher in the long-term group compared to the nonwear group (Z=102.500, P=0.003, Z=100.500, P=0.003) and the short-term group (Z=120.500, P=0.050, Z=117.500, P=0.041). No significant difference was found between the short-term group and the nonwear group. The median of the MGs loss area percentage in the upper eyelid of the nonwear, short-term and long-term groups was 9.2%, 13.3% and 16.7%, respectively. The median of the total MGs loss area percentage in the nonwear, short-term and long-term groups were 6.6%, 8.8% and 13.0%, respectively. The above medians were significantly different among the three groups (Hc=6.390, P=0.041; Hc=7.019, P=0.030). They were significantly larger in the long-term wearers than the nonwearers (Z=120.500, P=0.019, Z=120.500, P=0.009). No significant difference was found between the short-term group and the nonwear group, or between the short-term group and the long-term group. No significant differences in the meiboscores or MGs loss area percentage in the lower eyelid were noticed among the three groups. The area under the curve of total area percentage of MGs loss in receiver operating characteristic analysis was 0.981 (P<0.001). CONCLUSIONS Long-term (more than 3 years) CL wear can cause MGs loss. Digital analysis is helpful in the morphologic evaluation of MGs. (Chin J Ophthalmol, 2016, 52: 604-609).
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Affiliation(s)
- Y Tang
- Department of Ophthalmology, Peking University First Hopstital, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100034, China
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Du W, Zhang Y, Yang JZ, Li HB, Xia J, Li N, Zhang JS, Yan XM, Zhou ZY. Effect of MSTN propeptide protein on the growth and development of Altay lamb muscle. Genet Mol Res 2016; 15:gmr7778. [PMID: 27420960 DOI: 10.4238/gmr.15027778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Prokaryotic expression technology was used to express maltose-binding protein binding myostatin (MSTN) propeptide fusion protein. Six disease-free Altay lambs were used in this study. The right leg gastrocnemii were injected with MSTN recombinant propeptide protein. The left leg gastrocnemii (the control group) were injected with the same dose of phosphate based saline. The lambs were fed during four months under the same conditions and then slaughtered. Gastrocnemius samples were hematoxylin-eosin stained and the size of the muscle fibers was measured. A real-time polymerase chain reaction (RT-PCR) showed that single gastrocnemius cells in the experimental group had an average area of 1163.01 µm(2), while it was 845.09 µm(2) in the control group (P < 0.05). This indicates that the MSTN propeptide biological agents had an inhibitory effect on MSTN. In order to reveal its mechanism, RT-PCR was conducted to detect the expression of the differentiation-associated genes MyoD, Myf5, Myogenin, p21, and Smad3. The results showed that, in the MSTN propeptide biological agent injected group, expression levels of MSTN, Smad3, and p21 were lower than the control group, while Myf5, MyoD, and Myogenin were higher compared to the control group. This indicates that, when expression of the MSTN gene was inhibited, muscle cell differentiation and growth can be promoted by Smad3 up-regulated expression of Myf5, MyoD, and Myogenin.
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Affiliation(s)
- W Du
- Xinjiang Academy of Animal Science, Urumqi, China
| | - Y Zhang
- Xinjiang Academy of Animal Science, Urumqi, China
| | - J Z Yang
- Agriculture Lab, University of Hawaii at Manoa, Honolulu, HI, USA
| | - H B Li
- Xinjiang Academy of Animal Science, Urumqi, China
| | - J Xia
- Xinjiang Academy of Animal Science, Urumqi, China
| | - N Li
- Xinjiang Academy of Animal Science, Urumqi, China
| | - J S Zhang
- Xinjiang Academy of Animal Science, Urumqi, China
| | - X M Yan
- Xinjiang Academy of Animal Science, Urumqi, China
| | - Z Y Zhou
- Xinjiang Academy of Animal Science, Urumqi, China
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Tang H, Zhang W, Yan XM, Wang LP, Dong H, Shou T, Lei H, Guo Q. Analysis of SLC4A11, ZEB1, LOXHD1, COL8A2 and TCF4 gene sequences in a multi-generational family with late-onset Fuchs corneal dystrophy. Int J Mol Med 2016; 37:1487-500. [PMID: 27121161 PMCID: PMC4866966 DOI: 10.3892/ijmm.2016.2570] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 03/31/2016] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to determine the genetic basis of a multi-generational family with late-onset (LO) Fuchs corneal dystrophy (FCD). Five FCD causal genes [solute carrier family 4, sodium borate transporter, member 11 (SLC4A11), zinc finger E-box binding homeobox 1 (ZEB1), lipoxygenase homology domains 1 (LOXHD1), collagen, type VIII, alpha 2 (COL8A2) and transcription factor 4 (TCF4)], previously reported to be implicated in the pathogenesis of FCD, were screened. A total of 27 variants [including 22 known single nucleotide polymorphisms (SNPs) from the Single Nucleotide Polymorphism Database (dbSNP) and 5 variants absent from dbSNP] were detected in this FCD pedigree across the SLC4A11, ZEB1, LOXHD1 and COL8A2 genes as follows: i) 22 known SNPs from dbSNP, including 3 coding (p.R161R, p.S213S and p.T833T) and 11 non-coding variants of SLC4A11, 2 intronic SNPs of ZEB1 from dbSNP (rs220057 and rs220060), 1 intronic SNP of LOXHD1 from dbSNP (rs16939650), and 5 SNPs of COL8A2 from dbSNP (p.A35A, p.R155Q, p.L335L, p.G495G and p.T502M); and ii) 5 variants that have not been previously reported in FCD patients and that are absent from dbSNP were identified across the ZEB1 and LOXHD1 genes; these included 3 continuous indels located at the junction of the 5'-UTR and the adjacent exon 1 of ZEB1 [Indel 1 (c.-86_-53delins gggaggggtggaggcggaggggtGGGGGGGAAGG); Indel 2 (c.-52_-46delinsGGGAGGG); and Indel 3 (c.-45_-42delinsAGGG)], and 2 intronic variants of LOXHD1 (c.5332-126C>T and c.1809+155G>A). Apart from one intronic SNP of SLC4A11 from dbSNP (rs372201212), the pathologic consequence of which is uncertain, and 2 intron variants of LOXHD1 (c.5332-126C>T and c.1809+155G>A); the variants likely represent examples of de novo mutations. Neither of the other 24 variants provided strong evidence of pathogenesis in this FCD pedigree. An analysis of 7 SNPs in TCF4 from dbSNP, which have been associated with LO FCD in different populations, revealed that these 7 SNPs were not associated with FCD in this specific pedigree. A genome‑wide linkage scan to search for linkage to one of the previously described FCD loci or to identify a novel locus for FCD will need to be performed in this FCD pedigree. Our observation, nevertheless, expands the knowledge of the genetic status of patients with FCD.
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Affiliation(s)
- Hui Tang
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Wen Zhang
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Xin-Min Yan
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Lin-Ping Wang
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Hong Dong
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Tao Shou
- Department of Oncology, The First People's Hospital of Yunnan Province, Kunming, Yunnan 650032, P.R. China
| | - Huo Lei
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan 650032, P.R. China
| | - Qiang Guo
- College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
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Du W, Xia J, Zhang Y, Liu MJ, Li HB, Yan XM, Zhang JS, Li N, Zhou ZY, Xie WZ. Expression of recombinant myostatin propeptide pPIC9K-Msp plasmid in Pichia pastoris. Genet Mol Res 2015; 14:18414-20. [PMID: 26782489 DOI: 10.4238/2015.december.23.29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Myostatin propeptide can inhibit the biological activity of myostatin protein and promote muscle growth. To express myostatin propeptide in vitro with a higher biological activity, we performed codon optimization on the sheep myostatin propeptide gene sequence, and mutated aspartic acid-76 to alanine based on the codon usage bias of Pichia pastoris and the enhanced biological activity of myostatin propeptide mutant. Modified myostatin propeptide gene was cloned into the pPIC9K plasmid to form the recombinant plasmid pPIC9K-Msp. Recombinant plasmid pPIC9K-Msp was transformed into Pichia pastoris GS115 by electrotransformation. Transformed cells were screened, and methanol was used to induce expression. SDS-PAGE and western blotting were used to verify the successful expression of myostatin propeptide with biological activity in Pichia pastoris, providing the basis for characterization of this protein.
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Affiliation(s)
- W Du
- College of Animal Science, Shihezi University, Shihezi, China.,Xinjiang Academy of Animal Science, Urumqi, China
| | - J Xia
- Xinjiang Academy of Animal Science, Urumqi, China
| | - Y Zhang
- Xinjiang Academy of Animal Science, Urumqi, China
| | - M J Liu
- College of Animal Science, Shihezi University, Shihezi, China.,Xinjiang Academy of Animal Science, Urumqi, China
| | - H B Li
- Xinjiang Academy of Animal Science, Urumqi, China
| | - X M Yan
- Xinjiang Academy of Animal Science, Urumqi, China
| | - J S Zhang
- Xinjiang Academy of Animal Science, Urumqi, China
| | - N Li
- Xinjiang Academy of Animal Science, Urumqi, China
| | - Z Y Zhou
- Xinjiang Academy of Animal Science, Urumqi, China
| | - W Z Xie
- Xinjiang Academy of Animal Science, Urumqi, China
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Shen T, Yan XM, Liu HX, Zhang BX, Li L, Zhang JP, Wang JL, Xiao CJ. Genotype I of hepatitis B virus was found in east Xishuangbanna, China and molecular dynamics of HBV/I. J Viral Hepat 2015; 22:37-45. [PMID: 24548532 DOI: 10.1111/jvh.12231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 12/01/2013] [Indexed: 02/06/2023]
Abstract
There is a dearth of data about the prevalence of hepatitis B virus (HBV) infection in Mengla, China; and no detailed analysis of the molecular evolution of genotype I in Asia. In this study, 909 serum samples from ethnic minority people in China were obtained. Serological assay and HBV S-gene amplification were carried out, and phylogenetic and evolutionary dynamics analysis of 62 HBV/I S-gene was performed. On this survey, 153 individuals were tested HBsAg-positive. Genotypes of S-gene were classified into three groups: C, B and I. Under the strict model and the relax model, the estimated evolutionary rates for HBV/I were 3.74 × 10(-4) and 6.93 × 10(-4) substitution/site/year, respectively. However, when the geographic origin was taken into account, the mean substitution rates were increased. Estimated time to most recent ancestor of genotype I varied from ~30 to ~70 years ago. The Bayesian sky plot showed a rapid spread of HBV/I at the end of 1980s. Peculiar nucleotides distributed were observed in the subgenotype I1/I2. In conclusion, higher prevalence of HBV infection was observed in Mengla county. Multifactors like timescale and spatial locations should be integrated to provide a better interpretation of the HBV/I evolutionary history in the region.
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Affiliation(s)
- T Shen
- Medical Science College of Yunnan University, Kunming, China; Institute of Basic and Clinical Medicine, Center of Clinical Molecular Biology, Provincial Key Laboratory for Birth Defects and Genetic Diseases, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, China
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Abstract
Hepatitis B virus (HBV) belongs to the genus Orthohepadnavirus of the Hepadnaviridae family and is approximately 3.2 kb in length. Owing to a lack of proofreading capacity during reverse transcription and a high replication rate, HBV exhibits as quasispecies. To detect the genetic mutations of HBV, many methods with different sensitivities and throughputs were developed. According to documentary records, HBV mutation and evolution were important vial parameters in predicting disease progression and therapeutic outcome. In this review, we separately discussed the correlation between HBV genomic mutations in four open reading frames and liver disease progression. Since some of the results were controversial from different laboratories, it remains to be seen whether functional analyses will confirm their role in modifying the course of infection.
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He JD, Gao JM, Shen T, Murphy RW, Yan XM. Evolutionary perspective on hepatitis B virus with an expanded sampling strategy. Virus Res 2013; 178:525-9. [PMID: 24103771 DOI: 10.1016/j.virusres.2013.09.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/19/2013] [Accepted: 09/20/2013] [Indexed: 10/26/2022]
Abstract
To investigate the role hepatitis B e antigen (HBeAg) plays in the evolution of hepatitis B virus (HBV), we sequenced the basic core promoter (BCP) and precore (preC) regions of 348 clones total from ten HBV Chinese patients. Eleven mutations were more frequent in HBeAg-negative patients than in HBeAg-positive patients. Further, the sequencing of dozens of variants was found to be necessary to obtain mutation profiles. Phylogenetic and median-joining network analyses suggested that variants from each patient had a single common ancestor (monophyly). Higher haplotype and nucleotide diversities were identified in HBeAg-negative patients. Analysis of dN/dS suggested that viruses experiencing a stronger immune response had lower haplotype diversity. Because HBeAg seroconversion was associated with viral diversity it served as an indicator of HBV evolution. Significantly, this study indicated a larger sampling of variants from each patient was required to understand effectively the properties of HBV.
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Affiliation(s)
- Jun-Dong He
- Institute of Clinical and Basic Medical Sciences, Center of Clinical Molecular Biology, Key Laboratory for Birth Defects and Genetic Diseases, First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
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Li BY, Zhang M, Yan XM, Peng YQ. Conjugate Addition of Indole to α,β-Unsaturated Ketones Catalyzed by Lewis Acid Immobilized on a Biorenewable Support. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201000184] [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: 11/06/2022]
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Yang SK, Tan N, Yan XM, Chen F, Long W, Lin YC. Thorium(IV) removal from aqueous medium by citric acid treated mangrove endophytic fungus Fusarium sp. #ZZF51. Mar Pollut Bull 2013; 74:213-219. [PMID: 23871201 DOI: 10.1016/j.marpolbul.2013.06.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [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: 04/13/2013] [Revised: 06/23/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Thorium(IV) biosorption is investigated by citric acid treated mangrove endophytic fungus Fussarium sp. #ZZF51 (CA-ZZF51) from South China Sea. The biosorption process was optimized at pH 4.5, equilibrium time 90 min, initial thorium(IV) concentration 50 mg L(-1) and adsorbent dose 0.6 g L(-1) with 90.87% of removal efficiency and 75.47 mg g(-1) of adsorption capacity, which is obviously greater than that (11.35 mg g(-1)) of the untreated fungus Fussarium sp. #ZZF51 for thorium(IV) biosorption under the condition of optimization. The experimental data are analyzed by using isotherm and kinetic models. Kinetic data follow the pseudo-second-order model and equilibrium data agree very well with the Langmuir model. In addition, FTIR analysis indicates that hydroxyl, amino, and carbonyl groups act as the important roles in the adsorption process.
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Affiliation(s)
- S K Yang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China.
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Tang H, Guo Q, Zhang C, Zhu J, Yang H, Zou YL, Yan Y, Hong D, Sou T, Yan XM. Identification of an intermediate signature that marks the initial phases of the colorectal adenoma-carcinoma transition. Int J Mol Med 2011; 26:631-41. [PMID: 20878084 DOI: 10.3892/ijmm_00000508] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The colorectal adenoma-carcinoma sequence describes the stepwise progression from normal to dysplastic epithelium and then to carcinoma. Only a small proportion of colorectal adenomas (CRAs) progress to colorectal carcinomas (CRCs). Endoscopic intervention is currently being used on patients with high grade dysplasia CRAs, with diameters of >1 cm, or villous components of >25% who are at higher risk than other CRA sufferers. During the process, biopsy samples are taken for conventional histological diagnosis, but poor pathomorphological sensitivity and specificity greatly limit the diagnostic accuracy. Unfortunately, there are no reliable molecular criteria available that can predict the potential development of CRA to CRC. Gene expression profiles of normal colorectal mucosa (NOR), CRA and different Dukes' stages of CRC biopsy specimens, which represent the gradual progress of the CRA to CRC sequence, were determined by Affymetrix technology. Representative regulated genes were further analyzed by quantitative real-time PCR (qRT-PCR) and immunohistochemistry (IHC). Intersectional analyses of discriminative expression signatures of CRC vs. CRA and CRA vs. NOR allowed the identification of an intermediate signature of 463 probe sets (psets) that mark the NOR--> CRA-->CRC progression. This signature represents a reservoir of candidate markers for the early diagnosis of higher-risk CRA, thus allowing for timely therapeutic intervention and more selective treatment. A further 279 CRC-specific psets pointing to the malignant transition from CRA to CRC were identified and these could represent potential therapeutic targets for CRC. The reliability of the results was further confirmed by qRT-PCR and IHC analyses of the 4-gene sets randomly selected from the 463 psets.
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Affiliation(s)
- Hui Tang
- Institute of Basic Medicine, Key Laboratory of Yunnan Province, The First People's Hospital of Yunnan Province, Kunming, Yunnan 650032, PR China
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Tang H, Zhang C, Li L, Yan XM, Guo Q. Clinical significance of CXCR4 and CCR7 expression in Barrett's esophagus, esophageal adenocarcinoma and esophageal squamous cell carcinoma. Shijie Huaren Xiaohua Zazhi 2010; 18:3632-3639. [DOI: 10.11569/wcjd.v18.i34.3632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To detect the expression of CXC chemokine receptor 4 (CXCR4) and CC chemokine receptor 7 (CCR7) in normal esophageal mucosa, Barrett's esophagus (BE), esophageal adenocarcinoma (EADC), and esophageal squamous cell carcinoma (ESCC), and to investigate their clinical significance.
METHODS: The expression of CXCR4 and CCR7 in 56 normal esophageal mucosal specimens, 80 BE specimens (including 22 cases of BE with multifocal atypical hyperplasia), 25 EADC specimens, and 48 ESCC specimens was examined by immunohistochemistry. The expression levels of CXCR4 and CCR7 were then quantified and analyzed statistically.
RESULTS: The positive expression rates of CXCR4 and CCR7 in BE, EADC and ESCC were significantly higher than those in normal esophageal mucosa (CXCR4: 78.75%, 68.00%, 83.33% vs 39.29%; CCR7: 60.00%, 60.00%, 58.33% vs 30.36%; all P< 0.01). However, there were no significant differences in the positive expression rates of CXCR4 and CCR7 among BE, EADC and ESCC. The positive expression rates of CXCR4 were significantly higher than those of CCR7 in both BE and ESCC (P < 0.05 and 0.01). CXCR4 and CCR7 expression was not associated with gender, age, and lesion site in BE, EADC and ESCC, but correlated with tumor differentiation and lymph node metastasis in EADC (both P < 0.05) and TNM stage, lymph node metastasis, and differentiation in ESCC (all P < 0.05). A significant correlation was noted between CXCR4 and CCR7 expression in BE and EADC (r = 0.262, 0.490), but not in ESCC (r = 0.076).
CONCLUSION: Combined detection of CXCR4 and CCR7 expression may contribute to more accurate diagnosis of BE, EADC and ESCC. High expression levels of CXCR4 and CCR7 can be used as important parameters for evaluating tumor invasion and metastasis in both EADC and ESCC.
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Sa YL, Shen XM, Shi KQ, Tang H, Zhao RB, Lu J, Song JX, Yan XM. [Effects of human bone marrow mesenchymal stem cells on cytokines secretion from allogeneic dendritic cell activated cytokine-induced killer cells]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2010; 26:988-991. [PMID: 20937236] [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: 05/30/2023]
Abstract
AIM to study the effect of human bone marrow derived mesenchymal stem cells (hMSCs) on cytokines secretion (IFN-γ, TNF-α, IL-10, IL-6, IL-4 and IL-2) of allogeneic DC-CIK cells (in co-culture of CIK cells with DC), which investigate the mechanism of immunoregulation induced by hMSCs. METHODS the hMSCs from bone marrow were isolated, expanded and identified by cell morphology, differentiation into neuron-like cells with NSE, fat-like cells with red-oil stain, and expression of CD29, CD44. The DC and CIK cells from peripheral blood were isolated, expanded and identified by CD1α, HLA-DR or CD3(+);CD56(+);. The hMSCs were co-cultured with DC-CIK cells according to ratio 1:10. The expression of the six cytokines in supernatant was evaluated by flow cytometry after 4 days of DC-activated CIK cells in co-culture with hMSCs. RESULTS the hMSCs displayed a fibroblast-like morphology and the positive cells of CD29 and CD44 were 96.6%, 94.6%, which have the capacity of differentiation into neuron-like cells with expressed NSE as well as fat-like cells with red-oil stain positive. The expression of CD1α, HLA-DR in DC was (91.9 ± 10.04)% and (88.8 ± 8.92)%. The CD3(+);CD56(+); double positive cells in DC-CIK cells was (29.23 ± 12.23)% compared to CIK cells with (15.98 ± 2.49)%. The cytokines secretion of DC-CIK cells in co-culture with hMSCs was IFN-γ (135.05 ± 48.19) ng/L; TNF-α (11.33 ± 1.42) ng/L; IL-10 (10.15 ± 2.25) ng/L; IL-6 (494.63 ± 235.222) ng/L; IL-4 (7.07 ± 2.30) ng/L and IL-2 (1074.6 3 ± 303.74) ng/L. In control group (DC-CIK cells) the secretion of IFN-γ, TNF-α, IL-10, IL-6, IL-4 and IL-2 was (717.6 ± 248.15) ng/L; (17.78 ± 7.52) ng/L; (29.95 ± 12.76) ng/L; (8.03 ± 0.21) ng/L, (9.08 ± 3.07) ng/L as well as IL-2 1 250 ng/L. CONCLUSION the secretion of IFN-γ and IL-10 were down-regulated. It probably implied that hMSCs had the effect of immunoregulation on DC-CIK cells.
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Affiliation(s)
- Ya-Lian Sa
- Institute of Clinical and Basic Medical Sciences; The First People's Hospital of Yunnan Province (Kunhua Hospital Affiliated to Kunming Medical University), Kunming 650032, China.
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Shen T, Gao JM, Zou YL, Dong H, Yan XM. Novel hepatitis B virus subgenotype in the southern Yunnan Province of China. Intervirology 2009; 52:340-6. [PMID: 19864922 DOI: 10.1159/000252912] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Accepted: 08/21/2009] [Indexed: 01/07/2023] Open
Abstract
Hepatitis B virus (HBV) infection is highly prevalent in China. To identify the genotypes of HBV in the southern Yunnan Province of China, full-length HBV genomes were extracted from 1 Dai and 4 Hani HBV carriers and linked with the pMD T-18 vector. For each patient, 3-10 clones were sequenced directly and a consensus sequence was created. Genotypic and serotypic analysis revealed 4 HBV/B (2 B2 with adw2 and 2 new subgenotypes with ayw1) and 1 HBV/C (C1 with adrq+) genotypes. The divergences of the entire genome sequences of the new subgenotype were 0-0.9% and 2.99-6.48% between other known HBV/B. Divergences in other coding regions revealed that it was more similar to B3 and B4 in the precore/core gene (2.02 and 2.09%, respectively), and similar to B3 and B5 in the preS1/S2/S gene (2.24 and 2.78%, respectively). Phylogenetic trees using the precore/core and X genes both revealed a new clad separating from the major trunk of genotype B with a 99% bootstrap value. These results show that the 2 consensus isolates are a mosaic of B3-B5, which we designated to subgenotype B6. Considering the geographical distances, the relationship between B6 and other HBV/B subgenotypes (B3-B5) and HBV evolution needs to be further studied.
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Affiliation(s)
- Tao Shen
- Institute of Basic Medicine of the First People's Hospital of Yunnan Province, Kunming 650032, Yunnan Province, PR China
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Wu HT, Yan XM, Hu YL, Diao ZY, Wu J, Zhang SQ. [Expression, characterization of recombinant human soluble BAFF secreted from CHO cell]. Mol Biol (Mosk) 2009; 43:85-90. [PMID: 19334529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
B cell-activating factor of the TNF family (BAFF) is critical for B cell maturation and survival. Here, we constructed a stable CHO cell line, in which the expression level of soluble form of BAFF (sBAFF) was raised from 0.13 microg/ml to 0.55 microg/ml. Purified recombinant sBAFF from these CHO cells not only bound to its receptors but also co-stimulated the proliferation of human peripheral blood B lymphocyte in vitro. These results provided us with a useful basis for further studies about sBAFF-related research.
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Shen T, Yan XM, Zou YL, Gao JM, Dong H. Virologic characteristics of hepatitis B virus in patients infected via maternal-fetal transmission. World J Gastroenterol 2008; 14:5674-82. [PMID: 18837083 PMCID: PMC2748201 DOI: 10.3748/wjg.14.5674] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine whether HBV with the same characteristics causes dissimilar mutations in different hosts.
METHODS: Full-length HBV genome was amplified and linked with pMD T18 vector. Positive clones were selected by double-restriction endonuclease digestion (EcoRI and HindIII) and PCR. Twenty seven clones were randomly selected from an asymptomatic mother [at two time points: 602 (1 d) and 6022 (6 mo)] and her son [602 (S)], and the phylogenetic and mutational analysis was performed using BioEditor, Clustal X and MEGA software. Potential immune epitopes were determined by the Stabilized Matrix Method (SMM), SMM-Align Method and Emini Surface Accessibility Prediction.
RESULTS: All of the 27 sequences were genotype C, the divergence between the mother and son was 0%-0.8%. Compared with another 50 complete sequences of genotype C, the mother and her son each had 13 specific nucleotides that differed from the other genotype C isolates. AA 1-11 deletion in preS1 was the dominant mutation in the mother (14/18). The 1762T/1764A double mutation existed in all clones of the mother, 3 of them were also coupled with G1896A mutation, but none were found in the son. 17 bp deletion starting at nucleotide 2330 was the major mutation (5/9) in the son, which caused seven potential HLA class I epitopes and one B cell epitope deletion, and produced a presumptive new start codon, downstream from the original one of the P gene.
CONCLUSION: The HBV strain in the son came from his mother, and discrepant mutation occurred in the mother and her son during infection.
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Pichurin P, Yan XM, Farilla L, Guo J, Chazenbalk GD, Rapoport B, McLachlan SM. Naked TSH receptor DNA vaccination: A TH1 T cell response in which interferon-gamma production, rather than antibody, dominates the immune response in mice. Endocrinology 2001; 142:3530-6. [PMID: 11459799 DOI: 10.1210/endo.142.8.8301] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Two approaches have been developed to induce TSH receptor antibodies in mice with properties resembling those in Graves' disease, the Shimojo model of injecting live fibroblasts coexpressing the TSH receptor and major histocompatibility complex antigen Class II, and TSH receptor-DNA vaccination. Thyroid-stimulating antibodies appear to occur less commonly after DNA vaccination, but there has been no direct comparison of these models. We performed a three-way comparison of 1) AKR/N and 2) BALB/c mice vaccinated with TSH receptor-DNA and 3) AKR/N mice injected with fibroblasts expressing the TSH receptor and the major histocompatibility complex antigen class II of AKR/N mice. TSH receptor-DNA vaccinated mice had low or undetectable levels of TSH receptor antibodies determined by ELISA or flow cytometry. Nonspecific binding precluded comparisons with sera from Shimojo mice by these assays. TSH binding inhibition and thyroid-stimulating antibody were undetectable in TSH receptor-DNA vaccinated mice. In Shimojo mice, TSH binding inhibition was positive in approximately 60%, and thyroid-stimulating antibodies were positive in hyperthyroid animals. Unlike the negative antibody data, splenocytes from TSH receptor-vaccinated (but not Shimojo) mice proliferated and produced the Th1 cytokine interferon-gamma in response to TSH receptor antigen. In conclusion, DNA vaccination is less effective at inducing TSH receptor antibodies than the Shimojo approach, but it permits the future characterization of TSH receptor-specific T cells generated without adjuvant.
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Affiliation(s)
- P Pichurin
- Autoimmune Disease Unit, Cedars-Sinai Research Institute and UCLA School of Medicine, Los Angeles, California 90048, USA
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Chazenbalk GD, McLachlan SM, Pichurin P, Yan XM, Rapoport B. A prion-like shift between two conformational forms of a recombinant thyrotropin receptor A-subunit module: purification and stabilization using chemical chaperones of the form reactive with Graves' autoantibodies. J Clin Endocrinol Metab 2001; 86:1287-93. [PMID: 11238522 DOI: 10.1210/jcem.86.3.7363] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A secreted recombinant TSH receptor (TSHR) ectodomain variant (TSHR-289) neutralizes TSHR autoantibodies in Graves' disease, but is heterogeneous in containing both immunologically active and inactive molecules and is also unstable. We have now purified each form of TSHR-289 using sequential affinity chromatography with a mouse mAb (3BD10) specific for the inactive form, and a mAb to C-terminal His residues that recognizes both forms. The immunological difference between active and inactive TSHR-289 was unrelated to primary amino acid sequence or carbohydrate content and was, therefore, attributable to its folded state. The epitopes for Graves' autoantibodies and 3BD10 overlap, and both are destroyed by denaturation. Therefore, reciprocal binding by autoantibodies and 3BD10 to conformational determinants involving the same TSHR segment suggests a prion-like shift between two folded states of the molecule. Despite purification, immunologically active TSHR-289 remained labile, as determined by loss of autoantibody, and gain of 3BD10, recognition. However, using chemical chaperones we have, for the first time, been able to stabilize purified TSHR antigen in immunologically intact form. In summary, purification of immunologically active and stable antigen in milligram quantities provides a powerful tool for future diagnostic and therapeutic studies in Graves' disease.
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Affiliation(s)
- G D Chazenbalk
- Autoimmune Disease Unit, Cedars-Sinai Research Institute and School of Medicine, University of California, Los Angeles, California 90048, USA
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Guo J, Yan XM, McLachlan SM, Rapoport B. Search for the autoantibody immunodominant region on thyroid peroxidase: epitopic footprinting with a human monoclonal autoantibody locates a facet on the native antigen containing a highly conformational epitope. J Immunol 2001; 166:1327-33. [PMID: 11145717 DOI: 10.4049/jimmunol.166.2.1327] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Autoantibodies to thyroid peroxidase (TPO) are the hallmark of the humoral autoimmune response in human autoimmune thyroiditis (Hashimoto's thyroiditis). The majority of TPO autoantibodies in individual patients' sera interact with a restricted immunodominant region on TPO. Although this region can be mapped, previous studies have failed to localize its position on the TPO molecule. We, therefore, used a footprinting approach that can localize a highly conformational, discontinuous epitope on a very large molecule. Extensive biotinylation ( approximately 15 biotins/molecule protein) of lysine residues on the surface of purified, native TPO resulted in loss of multiple tryptic cleavage sites, as determined by analysis of tryptic polypeptide fragments on reverse-phase HPLC. TPO was then complexed with a monoclonal human autoantibody Fab (TR1.9) before biotinylation. After dissociation from TR1.9, TPO was recovered by gel filtration. A trypsin site, previously observed to be lost after TPO biotinylation, was restored when biotinylation was performed on the TPO-TR1.9 complex. The epitope-protected lysine (K) was present in a 30-aa TPO fragment that, by N-terminal sequencing, was found to be K713. Altered recognition by TR1.9 of a TPO-myeloperoxidase chimeric molecule involving this region supported the epitope protection data. In conclusion, we provide the first identification of an amino acid residue (K713) comprising part of an epitope within the TPO immunodominant region. This focal residue localizes the facet on the large, highly complex TPO molecule that contains the immunodominant region and provides the basis for rational guided mutagenesis studies to more fully characterize this region.
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Affiliation(s)
- J Guo
- Autoimmune Disease Unit, Cedars-Sinai Research Institute, and University of California School of Medicine, Los Angeles, CA 90048, USA
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Yan XM, Zhang SQ, Chang Q, Liu P, Xu JS. [Antibacterial and antifungal effects of Agkistrodon halys Pallas: purification of its antibacterial protein--LAO]. Shi Yan Sheng Wu Xue Bao 2000; 33:309-16. [PMID: 12549069] [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
This paper reports the venom from Agkistrodon halys Pallas have inhibitory activity against fungi and E. coli by tested in a disc diffusion assay. An antibacterial component--LAO from the venom were purified to homogeneous. It had not only antibacterial effect, but L-amino acid oxidase activity. And its enzymatic specific activity was 808 U/mg. The venom had at least 3 antibacterial components (I, II, III) as determined by acid polyacrilamide gel electrophoresis, LAO is the antibaterial components II.
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Affiliation(s)
- X M Yan
- College of Life Science, Nanjing Normal University, Nanjing 210097
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Yan XM, Guo J, Pichurin P, Tanaka K, Jaume JC, Rapoport B, McLachlan SM. Cytokines, IgG subclasses and costimulation in a mouse model of thyroid autoimmunity induced by injection of fibroblasts co-expressing MHC class II and thyroid autoantigens. Clin Exp Immunol 2000; 122:170-9. [PMID: 11091271 PMCID: PMC1905782 DOI: 10.1046/j.1365-2249.2000.01362.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AKR/N mice injected with fibroblasts expressing MHC class II (RT4.15HP cells) and the TSH receptor (TSHR) develop antibodies similar to those in Graves' disease. We were unable to analyse the subclass of these antibodies because of unexpectedly high non-specific binding by ELISA or flow cytometry. The non-specific binding reflected generalized immune activation which occurred even when the fibroblasts did not express the TSHR. However, the IgG subclasses were determined for thyroid peroxidase (TPO) antibodies induced using TPO-expressing RT4.14HP cells and found to be IgG2a > IgG1. This Thl pattern is consistent with spontaneous secretion of interferon-gamma (but not IL-4 or IL-10) by splenocytes from injected mice. The Th1 bias was related to fibroblast injection because conventional immunization of the same mouse strain with purified TPO and adjuvant induced a Th2 response (IgG1 >> IgG2a). Further, untransfected fibroblasts themselves induced powerful, non-specific proliferative responses when used as antigen-presenting cells (APC) in vitro. Flow cytometry revealed that the RT4.15HP fibroblasts (and TSHR- and TPO-transfected derivatives) expressed B7-1. Unexpected constitutive expression of this key molecule may bypass the requirement for up-regulation of other costimulatory molecules involved in T cell stimulation. Our data support the concept that RT4.15HP fibroblasts present the TSHR (or TPO), at least for initiating the immune response. However, the accompanying generalized immune stimulation creates difficulties for analysis of TSHR-specific T and B lymphocytes. On the other hand, extension of the model to TPO, an easier antigen to study, will facilitate analysis of murine T cell responses likely to resemble those in human thyroid autoimmunity.
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Affiliation(s)
- X M Yan
- Autoimmune Disease Unit, Cedars-Sinai Research Institute, UCLA School of Medicine, Los Angeles, CA, USA
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Liu SL, Pan JH, Shi DY, Chen KX, Wang QM, Chen SM, Yan XM. Relationship between structure and anti-oxidation of tocopherol with molecular orbit theory. Zhongguo Yao Li Xue Bao 1998; 19:513-8. [PMID: 10437135] [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: 02/13/2023]
Abstract
AIM To explore the relationship between different structures of tocopherol (Toc) and some phenol compounds and their anti-oxidative activities. METHODS Use the ab initio calculation of molecular mechanics and quantum chemistry. RESULTS The anti-oxidation of Toc was related to the ability to release active hydrogen, i.e., related to the O-H electron populations, frontier orbital energy (au), and the decreased amount of energy at the reaction ending stage. The order of hydroxyl O-H electron populations in different Toc model molecules were alpha < gamma < or = beta < delta, which was consistent with their anti-oxidation reported. CONCLUSION The molecular orbit (MO) theory and the quantum chemical parameters can be used to analyze the anti-oxidation of phenol compounds with different structures.
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Affiliation(s)
- S L Liu
- Department of Biochemistry, Shanghai Medical University, China.
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Yan XM, Tao ZQ, Liang YY, Chen ZJ, Zhang JS, Xu XH. Effect of catecholamic acid on detoxication and distribution of NiCl2 in mice and rats. Zhongguo Yao Li Xue Bao 1998; 19:80-4. [PMID: 10375767] [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: 02/12/2023]
Abstract
AIM To study the effect of catecholamic acid (CBMIDA) on detoxication of NiCl2. METHODS Mice and rats were injected s.c. or i.m. CBMIDA immediately after i.p. NiCl2. Each mouse was injected i.p. CBMIDA after i.v. 63NiCl2 185 kBq, and radioactivities of various tissues were measured with liquid scintillation counter at 24 h. The localization of 63Ni was shown by the whole-body autoradiography. RESULTS CBMIDA s.c. 0.5-1.5 g.kg-1 markedly reduced the mortality from acute poisoning of i.p. NiCl2 500 mg.kg-1. After i.p. NiCl2 in mice, the LD50 was 82.7 mg.kg-1. Mice were injected s.c. CBMIDA 1.5 or 2.5 g.kg-1 after Ni poisoning, the LD50 of NiCl2 were raised to 789 or 820 mg.kg-1, respectively. The LD50 of NiCl2 was 39 mg.kg-1 in rat. If CBMIDA was injected i.m. 0.5 g.kg-1 after i.p. NiCl2, the LD50 was 332 mg.kg-1. CBMIDA 1.5 g.kg-1 i.m. after i.v. 63NiCl2, decreased the contents of 63Ni in blood and lung of mice vs control mice at 24 h. The contents of 63Ni in brain, heart, spleen, and kidney were similar to those of the control mice. The content of 63Ni in bone was more than the control. The excretions of 63Ni through urine and feces were not increased by CBMIDA at 24 h. The whole-body autoradiography showed that the radioactivity was highly localized in the kidney, lung, and Harder's gland. There was a moderate level of 63Ni in the liver, bone, skin, and blood. A pronounced accumulation occurred in the bone. There was a marked reduction of 63Ni in the lung, skin, liver, and blood after i.p. CBMIDA. CONCLUSION The CBMIDA markedly raised the survival rate of nickel-poisoned mice and rats, and decreased 63Ni levels in lung and blood.
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Affiliation(s)
- X M Yan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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Liang YY, Zhang JS, Tao ZQ, Yan XM, Xu XH, Chen ZJ. [Effect of dimercaptosuccinic acid per os on distribution and excretion of 210Pb and 203Hg in mice]. Zhongguo Yao Li Xue Bao 1994; 15:379-82. [PMID: 7801787] [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: 01/27/2023]
Abstract
Sodium dimercaptosuccinate (Na-DMS) ip 1 g.kg-1, dimercaptosuccinic acid (DMSA) ig 1 g.kg-1, DMSA ig 1 g.kg-1 with NaHCO3 or Na-citrate ig 3 g.kg-1 was given to mice, separately. It enhanced the excretion of 210Pb in urine about 3.4, 3.8, 3.6, and 2.3 times vs control, respectively within 24 h. It enhanced the excretion of 203Hg in urine about 2.4, 2.3, 3.3, and 2.7 times, respectively within 24 h. Fecal excretion was not significantly elevated vs control. Tissue radioactivities showed a remarkable decrease in the levels of 210Pb and 203Hg in most organs, but DMSA increase the 210Pb content in kidney. The therapeutic effect of ig DMSA was similar to that of ip sodium dimercaptosuccinate.
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Affiliation(s)
- Y Y Liang
- Shanghai Institute of Materia Medica Chinese Academy of Sciences
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Zhang JS, Liang YY, Yan XM. [Whole-body autoradiographic localization of catecholamic acid in mice]. Zhongguo Yao Li Xue Bao 1994; 15:79-80. [PMID: 8010093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Catecholamic acid [catechol-3,6-bis-(methyleneimino diacetic acid)] is a chelating agent synthesized in our institute. Whole-body autoradiographic study was carried out to determine the distribution of [14C]catecholamic acid in 5 adult male mice. Each mouse was injected i.v. 370 kBq. After various times the mice, under ether anesthesia, were immersed in a mixture of dry ice and hexane. Whole-body sections were made at -20 C, 20 microns in thickness. Results showed: (1) At 5 min, higher radioactivities appeared in blood, kidneys, gastrointestinal mucosa, bone, skin, and hair; moderate concentrations in liver, lungs, spleen, and salivary glands. (2) During 20 min and 3 h, the radioactivities decreased (gradually) in all tissues except the bone. (3) Intense radioactivity persisted in the bone, while only traces remained in the kidneys and intestinal mucosa throughout the 24 h period of observation.
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Affiliation(s)
- J S Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences
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Yan XM, Li L, Liang YY, Tao ZQ, Xu XH, Chen ZJ, Zhang JS. [Effects of dimercaptosuccinic acid per os on copper excretion in rat]. Zhongguo Yao Li Xue Bao 1993; 14 Suppl:S34-7. [PMID: 8010071] [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: 01/28/2023]
Abstract
After dimercaptosuccinic acid (DMSA) was given intragastrically by gavage (ig) 0, 250, or 500 mg.kg-1 following in CuSO4 30 mg.kg-1 daily x 3 d in rats, the Cu contents of serum increased markedly within 1-12 h. When ig DMSA daily x 3 d, the excretion of Cu in urine per 24 h in the treated group was greatly promoted vs the control (P < 0.01), that in the 250 or 500 mg.kg-1 group were enhanced 2.4-3.8 and 5.8-7.8 times, respectively. That the excretion of Cu was increased in bile but not in feces suggested the plausible existence an enterohepatic circulation.
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Affiliation(s)
- X M Yan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences
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Xu J, Liang YY, Zhang JS, Yan XM. [Scavenging effects of dimercaptosuccinic acid per os on nickel in mice and rats]. Zhongguo Yao Li Xue Bao 1991; 12:441-4. [PMID: 1668131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In mice and rats given iv or im 63NiCl2 148-370 kBq, radioactivity was present in highest concentrations in kidney, lung, and liver. After given ig dimercaptosuccinic acid (DMSA) 1 g.kg-1, radioactivity decreased remarkably in kidney, lung, and blood. The excretion of 63Ni via urine and feces within 24 h, respectively 13.0 +/- 2.4% and 0.6 +/- 0.4%, was similar to that in the control group in mice. But radioactivity increased markedly in bone. The Ni content of bone decreased on d 7. In rats given im 63NiCl2 370 kBq, two different nickel complex peaks appeared in the gel chromatograms of serum, kidney, and lung. DMSA reduced the contents of protein-bound Ni in serum, kidney, and lung. The results showed that DMSA detoxified the Ni by forming a low toxicity Ni-DMSA complex to redistribute in the body.
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Affiliation(s)
- J Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences
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Yan XM. [T-lymphocyte subsets in peripheral blood of patients with herpes simplex keratitis]. Zhonghua Yan Ke Za Zhi 1991; 27:8-10. [PMID: 2060410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
By indirect immunofluorescence assay, the authors examined the lymphocyte subsets in peripheral blood of patients with HSK and normal individuals, using monoclonal antibodies. The relation between the alterations of T-lymphocyte subsets and the mechanism of HSK relapse was discussed. It is postulated that the alterations of T-lymphocyte subsets may help guide the clinical treatment of HSK and estimate its prognosis.
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Affiliation(s)
- X M Yan
- Department of Ophthalmology, First Teaching Hospital, Beijing Medical University
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Yan XM. [Sevoflurane inhalation anesthesia with F respiration return circuit combined intravenous anesthesia]. Zhonghua Wai Ke Za Zhi 1988; 26:335-6, 381-2. [PMID: 3229232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Yan XM, Tao ZQ, Liang YY, Chen ZJ, Zhang JS, Xu XH. [Effects of quinamic acid on cadmium distribution and excretion in mice and rats]. Zhongguo Yao Li Xue Bao 1987; 8:563-6. [PMID: 3451672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Tao ZQ, Xu XH, Yan XM, Chen ZJ, Zhang JS, Liang YY, Xie YY. [Detoxication and mobilization of uranium by catecholamic acid]. Zhongguo Yao Li Xue Bao 1987; 8:284-8. [PMID: 2959031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Yan XM, Weng ZY. [Tumor chemotherapy: synthesis of N-hydroxyethyl-isoquinoline-3-carboxylic lactone derivatives]. Yao Xue Xue Bao 1985; 20:312-5. [PMID: 4072705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Yan XM, Tao ZQ, Xu XH, Chen ZJ, Zhang JS, Mao BY, Liang YY, Ding GS. [Detoxication of poisoning by 11 metals by quinamic acid]. Zhongguo Yao Li Xue Bao 1985; 6:73-6. [PMID: 3158167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Tao ZQ, Chen ZJ, Zhang JS, Xu XH, Yan XM, Mao BY, Ding GS. [Distribution of 113mIn-quinamic acid in normal and tumor-bearing mice]. Zhongguo Yao Li Xue Bao 1983; 4:280-3. [PMID: 6230877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Weng ZY, Wang ZY, Yan XM. [A new antitumour agent ungeremine (AT-1840) and its structure-activity relationship]. Yao Xue Xue Bao 1982; 17:744-9. [PMID: 7168322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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