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Dong XY, Zou YX, Lyu FF, Yang WH, Zhang HL, Niu YH, Wang HJ, Guo R, Wang X, Li L, Lin ZH, Luo L, Lu DL, Lu Q, Liu HM, Chen LN. [A multicenter study on respiratory pathogen detection with Mycoplasma pneumoniae pneumonia in children]. Zhonghua Er Ke Za Zhi 2024; 62:310-316. [PMID: 38527500 DOI: 10.3760/cma.j.cn112140-20240117-00054] [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: 03/27/2024]
Abstract
Objective: To analyze the status of respiratory pathogen detection and the clinical features in children with Mycoplasma pneumoniae pneumonia (MPP). Methods: A prospective, multicenter study was conducted to collect clinical data, including medical history, laboratory examinations and multiplex PCR tests of children diagnosed with MPP from 4 hospitals in China between November 15th and December 20th, 2023. The multiplex PCR results and clinical characteristics of MPP children in different regions were analyzed. The children were divided into severe and mild groups according to the severity of the disease. Patients in the severe group were further divided into Mycoplasma pneumoniae (MP) alone and Multi-pathogen co-detection groups based on whether other pathogens were detected besides MP, to analyze the influence of respiratory pathogen co-detection rate on the severity of the disease. Mann-Whitney rank sum test and Chi-square test were used to compare data between independent groups. Results: A total of 298 children, 136 males and 162 females, were enrolled in this study, including 204 children in the severe group with an onset age of 7.0 (6.0, 8.0) years, and 94 children in the mild group with an onset age of 6.5 (4.0, 7.8) years. The level of C-reactive protein, D-dimer, lactic dehydrogenase (LDH) were significantly higher (10.0 (5.0, 18.0) vs. 5.0 (5.0, 7.5) mg/L, 0.6 (0.4, 1.1) vs. 0.5 (0.3, 0.6) mg/L, 337 (286, 431) vs. 314 (271, 393) U/L, Z=2.02, 2.50, 3.05, all P<0.05), and the length of hospitalization was significantly longer in the severe group compared with those in mild group (6.0 (6.0, 7.0) vs. 5.0 (4.0, 6.0) d, Z=4.37, P<0.05). The time from onset to admission in severe MPP children was significantly shorter than that in mild MPP children (6.0 (5.0, 9.5) vs. 9.0 (7.0, 13.0) d, Z=2.23, P=0.026). All patients completed the multiplex PCR test, with 142 cases (47.7%) MPP children detected with 21 pathogens including adenovirus 25 cases (8.4%), human coronavirus 23 cases (7.7%), rhinovirus 21 cases (7.0%), Streptococcus pneumoniae 21 cases (7.0%), influenza A virus 18 cases (6.0%). The pathogens with the highest detection rates in Tianjin, Shanghai, Wenzhou and Chengdu were Staphylococcus aureus at 10.7% (8/75), adenovirus at 13.0% (10/77), adenovirus at 15.3% (9/59), and both rhinovirus and Haemophilus influenzae at 11.5% (10/87) each. The multi-pathogen co-detection rate in severe MPP children was significantly higher than that in mild MPP group (52.9% (108/204) vs. 36.2% (34/94), χ²=10.62,P=0.005). Among severe MPP children, there are 89 cases in the multi-pathogen co-detection group and 73 cases in the simple MPP group. The levels of LDH, D-dimer and neutrophil counts in the multi-pathogen co-detection group were significantly higher than those in the simple MPP group (348 (284, 422) vs. 307 (270, 358) U/L, 0.8 (0.5, 1.5) vs. 0.6 (0.4, 1.0) mg/L, 4.99 (3.66, 6.89)×109 vs. 4.06 (2.91, 5.65)×109/L, Z=5.17, 4.99, 6.11, all P<0.05). Conclusions: The co-detection rate of respiratory pathogens, LDH and D-dimer in children with severe MPP were higher than those with mild MPP. Among severe MPP children the stress response of children in co-detection group was more serious than that of children with simple MPP.
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Affiliation(s)
- X Y Dong
- Department of Pulmonology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Y X Zou
- Department of Pulmonology, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Machang District, Tianjin 300074, China
| | - F F Lyu
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - W H Yang
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - H L Zhang
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Y H Niu
- Department of Pulmonology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - H J Wang
- Department of Pulmonology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - R Guo
- Department of Pulmonology, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Machang District, Tianjin 300074, China
| | - X Wang
- Department of Pulmonology, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Machang District, Tianjin 300074, China
| | - L Li
- Department of Pulmonology, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Machang District, Tianjin 300074, China
| | - Z H Lin
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - L Luo
- Department of Pediatric Pulmonology, Yaan People's Hospital, Yaan 625000, China
| | - D L Lu
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Q Lu
- Department of Pulmonology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - H M Liu
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - L N Chen
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
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Lin ZH, Lai QY, Li HY. A Machine-Learning Strategy to Detect Mura Defects in a Low-Contrast Image by Piecewise Gamma Correction. Sensors (Basel) 2024; 24:1484. [PMID: 38475020 DOI: 10.3390/s24051484] [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] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/02/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
A detection and classification machine-learning model to inspect Thin Film Transistor Liquid Crystal Display (TFT-LCD) Mura is proposed in this study. To improve the capability of the machine-learning model to inspect panels' low-contrast grayscale images, piecewise gamma correction and a Selective Search algorithm are applied to detect and optimize the feature regions based on the Semiconductor Equipment and Materials International Mura (SEMU) specifications. In this process, matching the segment proportions to gamma values of piecewise gamma is a task that involves derivative-free optimization which is trained by adaptive particle swarm optimization. The detection accuracy rate (DAR) is approximately 93.75%. An enhanced convolutional neural network model is then applied to classify the Mura type through using the Taguchi experimental design method that identifies the optimal combination of the convolution kernel and the maximum pooling kernel sizes. A remarkable defect classification accuracy rate (CAR) of approximately 96.67% is ultimately achieved. The entire defect detection and classification process can be completed in about 3 milliseconds.
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Affiliation(s)
- Zo-Han Lin
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 82445, Taiwan
| | - Qi-Yuan Lai
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 82445, Taiwan
| | - Hung-Yuan Li
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 82445, Taiwan
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Hu XY, Lin ZH, Gao DF. [A case of Brucellosis with abdominal aortic ulcer disease]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:88-90. [PMID: 38220462 DOI: 10.3760/cma.j.cn112148-20231117-00446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Affiliation(s)
- X Y Hu
- Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004,China
| | - Z H Lin
- Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004,China
| | - D F Gao
- Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004,China
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Liu MF, Ma RX, Cao XB, Zhang H, Zhou SH, Jiang WH, Jiang Y, Sun JW, Yang QT, Li XZ, Sun YN, Shi L, Wang M, Song XC, Chen FQ, Zhang XS, Wei HQ, Yu SQ, Zhu DD, Ba L, Cao ZW, Xiao XP, Wei X, Lin ZH, Chen FH, Shan CG, Wang GK, Ye J, Qu SH, Zhao CQ, Wang ZL, Li HB, Liu F, Cui XB, Ye SN, Liu Z, Xu Y, Cai X, Hang W, Zhang RX, Zhao YL, Yu GD, Shi GG, Lu MP, Shen Y, Zhao YT, Pei JH, Xie SB, Yu LG, Liu YH, Gu SS, Yang YC, Cheng L, Liu JF. [Incidence and prognosis of olfactory and gustatory dysfunctions related to infection of SARS-CoV-2 Omicron strain: a national multi-center survey of 35 566 population]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:579-588. [PMID: 37339898 DOI: 10.3760/cma.j.cn115330-20230316-00117] [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: 06/22/2023]
Abstract
Objective: This cross-sectional investigation aimed to determine the incidence, clinical characteristics, prognosis, and related risk factors of olfactory and gustatory dysfunctions related to infection with the SARS-CoV-2 Omicron strain in mainland China. Methods: Data of patients with SARS-CoV-2 from December 28, 2022, to February 21, 2023, were collected through online and offline questionnaires from 45 tertiary hospitals and one center for disease control and prevention in mainland China. The questionnaire included demographic information, previous health history, smoking and alcohol drinking, SARS-CoV-2 vaccination, olfactory and gustatory function before and after infection, other symptoms after infection, as well as the duration and improvement of olfactory and gustatory dysfunction. The self-reported olfactory and gustatory functions of patients were evaluated using the Olfactory VAS scale and Gustatory VAS scale. Results: A total of 35 566 valid questionnaires were obtained, revealing a high incidence of olfactory and taste dysfunctions related to infection with the SARS-CoV-2 Omicron strain (67.75%). Females(χ2=367.013, P<0.001) and young people(χ2=120.210, P<0.001) were more likely to develop these dysfunctions. Gender(OR=1.564, 95%CI: 1.487-1.645), SARS-CoV-2 vaccination status (OR=1.334, 95%CI: 1.164-1.530), oral health status (OR=0.881, 95%CI: 0.839-0.926), smoking history (OR=1.152, 95%CI=1.080-1.229), and drinking history (OR=0.854, 95%CI: 0.785-0.928) were correlated with the occurrence of olfactory and taste dysfunctions related to SARS-CoV-2(above P<0.001). 44.62% (4 391/9 840) of the patients who had not recovered their sense of smell and taste also suffered from nasal congestion, runny nose, and 32.62% (3 210/9 840) suffered from dry mouth and sore throat. The improvement of olfactory and taste functions was correlated with the persistence of accompanying symptoms(χ2=10.873, P=0.001). The average score of olfactory and taste VAS scale was 8.41 and 8.51 respectively before SARS-CoV-2 infection, but decreased to3.69 and 4.29 respectively after SARS-CoV-2 infection, and recovered to 5.83and 6.55 respectively at the time of the survey. The median duration of olfactory and gustatory dysfunctions was 15 days and 12 days, respectively, with 0.5% (121/24 096) of patients experiencing these dysfunctions for more than 28 days. The overall self-reported improvement rate of smell and taste dysfunctions was 59.16% (14 256/24 096). Gender(OR=0.893, 95%CI: 0.839-0.951), SARS-CoV-2 vaccination status (OR=1.334, 95%CI: 1.164-1.530), history of head and facial trauma(OR=1.180, 95%CI: 1.036-1.344, P=0.013), nose (OR=1.104, 95%CI: 1.042-1.171, P=0.001) and oral (OR=1.162, 95%CI: 1.096-1.233) health status, smoking history(OR=0.765, 95%CI: 0.709-0.825), and the persistence of accompanying symptoms (OR=0.359, 95%CI: 0.332-0.388) were correlated with the recovery of olfactory and taste dysfunctions related to SARS-CoV-2 (above P<0.001 except for the indicated values). Conclusion: The incidence of olfactory and taste dysfunctions related to infection with the SARS-CoV-2 Omicron strain is high in mainland China, with females and young people more likely to develop these dysfunctions. Active and effective intervention measures may be required for cases that persist for a long time. The recovery of olfactory and taste functions is influenced by several factors, including gender, SARS-CoV-2 vaccination status, history of head and facial trauma, nasal and oral health status, smoking history, and persistence of accompanying symptoms.
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Affiliation(s)
- M F Liu
- Graduate School of Beijing University of Chinese Medicine, Beijing 100029, China Department of Otorhinolaryngology Head and Neck Surgery, China-Japan Friendship Hospital, Beijing 100029, China
| | - R X Ma
- Department of Otorhinolaryngology Head and Neck Surgery, the First People's Hospital of Yinchuan, Yinchuan 750001, China
| | - X B Cao
- Department of Otorhinolaryngology, the First People's Hospital of Yunnan Province, Kunming 650100, China
| | - H Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - S H Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China
| | - W H Jiang
- Department of Otorhinolaryngology Head and Neck Surgery, Xiangya Hospital Central South University, Changsha 410008, China
| | - Y Jiang
- Department of Otorhinolaryngology Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - J W Sun
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of USTC, Hefei 230001, China
| | - Q T Yang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - X Z Li
- Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Y N Sun
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - L Shi
- Department of Rhinology and Allergy, Shandong Provincial ENT Hospital, Shandong University, Jinan 250299, China
| | - M Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University People's Hospital, Beijing 100032, China
| | - X C Song
- Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China
| | - F Q Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China
| | - X S Zhang
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China
| | - H Q Wei
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - S Q Yu
- Department of Otorhinolaryngology Head and Neck Surgery, Tongji Hospital, Tongji Medical University, Shanghai 200065, China
| | - D D Zhu
- Department of Otorhinolaryngology Head and Neck Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - L Ba
- Department of Otorhinolaryngology Head and Neck Surgery, Xizang Autonomous Region People's Hospital, Lasa 850000, China
| | - Z W Cao
- Department of Otorhinolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - X P Xiao
- Department of Otorhinolaryngology Head and Neck Surgery, Hunan Provincial People's Hospital, Changsha 410005, China
| | - X Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - Z H Lin
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - F H Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - C G Shan
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - G K Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - J Ye
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - S H Qu
- Department of Otorhinolaryngology Head and Neck Surgery, Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - C Q Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Shanxi Medical University Affiliated Second Hospital, Taiyuan 030001, China
| | - Z L Wang
- Department of Otorhinolaryngology Head and Neck Surgery, XuanWu Hospital, Capital Medical University, Beijing 100053, China
| | - H B Li
- Department of Otorhinolaryngology Head and Neck Surgery, Eye, Ear, Nose and Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - F Liu
- Department of Otorhinolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X B Cui
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, China
| | - S N Ye
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China
| | - Z Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - X Cai
- Department of Otorhinolaryngology Head and Neck Surgery, Qinghai Provincial People's Hospital, Xining 810000, China
| | - W Hang
- Department of Otorhinolaryngology Head and Neck Surgery, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - R X Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Y L Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - G D Yu
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - G G Shi
- Department of Otorhinolaryngology Head and Neck Surgery, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, Jinan 250021, China
| | - M P Lu
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y Shen
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Y T Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, the First People's Hospital of Yinchuan, Yinchuan 750001, China
| | - J H Pei
- Department of Otorhinolaryngology, the First People's Hospital of Yunnan Province, Kunming 650100, China
| | - S B Xie
- Department of Otorhinolaryngology Head and Neck Surgery, Xiangya Hospital Central South University, Changsha 410008, China
| | - L G Yu
- Department of Otorhinolaryngology Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y H Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - S S Gu
- Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Y C Yang
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - L Cheng
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - J F Liu
- Department of Otorhinolaryngology Head and Neck Surgery, China-Japan Friendship Hospital, Beijing 100029, China
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Han AN, Xu R, Feng LY, Yang Y, Chen LY, Lin ZH. [Clinicopathological significance of SMC4 expression in pancreatic cancer]. Zhonghua Bing Li Xue Za Zhi 2023; 52:504-506. [PMID: 37106296 DOI: 10.3760/cma.j.cn112151-20230215-00133] [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: 04/29/2023]
Affiliation(s)
- A N Han
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
| | - R Xu
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
| | - L Y Feng
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
| | - Y Yang
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
| | - L Y Chen
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
| | - Z H Lin
- Yanbian University Cancer Research Center, Key Laboratory of Pathobiology, State Ethnic Affairs Commission, Yanji 133000, China
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Lin ZH, Wang J, Liang ZH, Pan YC. [Research advances on stem cell therapy for diabetic foot wounds]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:281-286. [PMID: 35325974 DOI: 10.3760/cma.j.cn501120-20210828-00292] [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: 06/14/2023]
Abstract
Diabetic foot wound repair is a challenging issue in clinical practice. Due to the influence of multiple factors including the damage and regeneration failure of local tissue, the impaired pathways of wound repairing through blood vessels and nerve nutrition, and disorders of a variety of cellular factors, traditional treatment methods are often difficult to achieve good therapeutic effects. Stem cells are a type of cells with potentials of multidirectional differentiation, which also possess functions such as regulating immunity and paracrine to facilitate the comprehensive wound repair, so they have promising application prospect at present for the treatment of diabetic foot wounds. Because the relevant parameters of stem cell treatment are in the exploratory phase, there were no standardized data. This paper reviews the application of stem cells in the research of diabetic foot wound treatment over the past 6 years, analyzing and summarizing the contents in focused aspects including the types and sources of stem cells, effects of donor age and gender on stem cells, mode of administration, transplantation survival rate and safety, which may provide a reference for further application of stem cells in the clinical treatment of diabetic foot wound.
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Affiliation(s)
- Z H Lin
- Department of Burn and Skin Repair, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - J Wang
- Department of Burn and Skin Repair, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - Z H Liang
- Department of Burn and Skin Repair, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - Y C Pan
- Department of Burn and Skin Repair, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
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Dong MZ, Lin ZH, Liu SS, Xin YN, Xuan SY. [AGT rs5051 gene polymorphism increases the risk of coronary heart disease in patients with non-alcoholic fatty liver disease in the Han Chinese population]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1095-1100. [PMID: 34933429 DOI: 10.3760/cma.j.cn501113-20210106-00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the relationship between the angiotensinogen (AGT) rs5051 single nucleotide polymorphism (SNP) and the onset risk of coronary heart disease (CHD) in patients with non-alcoholic fatty liver disease (NAFLD) in the Han Chinese population. Methods: A total of 454 subjects were enrolled in this study. Among them, 140 cases were with NAFLD, 112 cases with NAFLD combined with CHD, and 202 healthy controls. Blood samples of all subjects were examined for biochemical indexes. Genotype at AGT rs5051 locus was detected by polymerase chain reaction. SPSS 21.0 statistical software was used for data statistical analysis. Results: The differences in distribution of AGT rs5051 genotypes and alleles between the NAFLD and the control group were not statistically significant (P > 0.05). The differences in the distribution of AGT rs5051 genotypes and alleles between the NAFLD combined with CHD and the NAFLD group were statistically significant (χ(2) = 10.32, P = 0.001; χ(2) = 11.72, P < 0.001). Binary logistic regression analysis results showed that TC + CC genotype had increased the occurrence risk of CHD in NAFLD patients (OR = 2.203, 95% CI: 1.322 ~ 3.670, P = 0.02) than AGT rs5051 TT genotype carriers. After adjusting for gender, age, and body mass index, the TC + CC genotype still significantly increased the occurrence risk of CHD in NAFLD patients (OR = 2.378, 95% CI: 1.384 ~ 4.087, P = 0.02). In addition, AGT rs5051 C allele mutations had significantly increased the occurrence risk of CHD in patients with NAFLD (OR = 2.018 before adjustment, 95% CI: 1.345 ~ 3.027, P = 0.001; OR = 2.161, 95% CI: 1.406 ~ 3.322 after adjustment. P < 0.001). Conclusion: This study is the first to report the correlation between AGT rs5051 polymorphism and the occurrence risk of CHD in patients with NAFLD in Han Chinese population. AGT rs5051 polymorphism can significantly increase the risk of CHD in patients with NAFLD.
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Affiliation(s)
- M Z Dong
- Department of Infectious Diseases, Qingdao Municipal Hospital, Qingdao University, Qingdao 266011, China
| | - Z H Lin
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266011, China
| | - S S Liu
- Clinical Research Center, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
| | - Y N Xin
- Department of Infectious Diseases, Qingdao Municipal Hospital, Qingdao University, Qingdao 266011, China
| | - S Y Xuan
- Department of Infectious Diseases, Qingdao Municipal Hospital, Qingdao University, Qingdao 266011, China
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Lin ZH, Qiu XB, Fu JT, Gan DH. [Pulmonary carcinosarcoma with ALK gene rearrangement: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:951-953. [PMID: 34344086 DOI: 10.3760/cma.j.cn112151-20201215-00930] [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)
- Z H Lin
- Department of Pathology, the First Affiliated Hospital of Jinan University, Guangzhou 510000, China
| | - X B Qiu
- Wuhan Kindstar Diagnostics Co., Wuhan 430000, China
| | - J T Fu
- Department of Pathology, the First Affiliated Hospital of Jinan University, Guangzhou 510000, China
| | - D H Gan
- Department of Pathology, the First Affiliated Hospital of Jinan University, Guangzhou 510000, China
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Zhu WP, He XG, Zhu HX, Wang LR, Lin ZH, Wang M, Wang L. Identification of miRNAs, mRNAs, lncRNAs, and circRNAs associated with hepatocellular carcinoma recurrence after interferon treatment. J BIOL REG HOMEOS AG 2021; 35:8. [PMID: 34296591 DOI: 10.23812/21-173-a] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To study the molecular mechanism of interferon-alpha (IFN-α) in the treatment of hepatocellular carcinoma (HCC) and the molecular markers that can predict the therapeutic effect, differentially expressed (DE)-miRNAs, -mRNAs, -lncRNAs, and -circRNAs were screened between 12 samples collected from 4 patients who had not received treatment (control), 4 patients who had received recombinant human interferon a-2b treatment (case1), and 4 patients who had relapsed after receiving recombinant human interferon a-2b treatment (case2). Enrichment analyses were performed to determine the principal functions of the DE-RNAs. We also constructed protein-protein interactions (PPI) and competing endogenous RNA (ceRNA) networks. In addition, a series-cluster analysis was performed to analyze changes in gene expression across different groups of HCC. Furthermore, the expression of the genes were verified in the Cancer Genome Atlas (TCGA) database. A total of 36 union DE-miRNAs, 175 union DE-mRNAs, 65 union DE-lncRNAs, and 52 union DE-circRNAs were obtained between the control vs case1, and case2 vs case1 groups. DE-mRNAs were mainly involved in the mitochondrial inner membrane. DE-circRNAs were mainly enriched in the Golgi apparatus. ceRNA network contained 68 DE-mRNAs, 26 DE-miRNAs, 45 DE-lncRNAs, and 23 DE-circRNAs. A total of 24 DE-miRNAs, 175 DE-mRNAs, 65 DE-lncRNAs, and 52 DE-circRNAs were classified into eight profiles, respectively. A total of 26 genes showed a significant correlation with prognosis of HCC (p < 0.05). Some genes may be used to predict the efficacy of IFN-α in the treatment of HCC. The results may lay a foundation for investigating the different sensitivities of IFN-α in the treatment of HCC.
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Affiliation(s)
- W P Zhu
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - X G He
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - H X Zhu
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - L R Wang
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Z H Lin
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - M Wang
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - L Wang
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, P.R. China
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Cao X, Cai YF, Lin ZH, Qian J, Feng J, Sun CF, Jiang SH, You XF, Liu H. [Composite diffuse large B-cell lymphoma and CD20-positive peripheral T-cell lymphoma involving the small intestine: a case report]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:346. [PMID: 33979982 PMCID: PMC8120117 DOI: 10.3760/cma.j.issn.0253-2727.2021.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- X Cao
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Y F Cai
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Z H Lin
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - J Qian
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - J Feng
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - C F Sun
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - S H Jiang
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - X F You
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - H Liu
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
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Wang L, Mu H, Lin ZH, Zhang LL, Xu Y, Liu H. [The effects of cyclophosphamide binding mesenchymal stem cells on IFN-γ induced 32D cells apoptosis and its mechanism]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:157-160. [PMID: 32135634 PMCID: PMC7357949 DOI: 10.3760/cma.j.issn.0253-2727.2020.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- L Wang
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
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12
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Affiliation(s)
- Z H Lin
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
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Lin ZH, Liu H, Zhu L, Yang X, Zhang YP, Qian J, Liu HY. [Rapamycin affect the apoptosis of splenic CD4 +CD25 + regulatory T cells of mouse severe aplastic anemia model]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:196-201. [PMID: 29562463 PMCID: PMC7342986 DOI: 10.3760/cma.j.issn.0253-2727.2018.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
目的 探讨雷帕霉素(Rapamycin, RAPA)对重型再生障碍性贫血(SAA)模型小鼠CD4+CD25+ Treg细胞凋亡情况的影响及可能的机制。 方法 以近交系雌性BALB/c小鼠作为对照(对照组),应用IFN-γ腹腔注射联合白消安灌胃的方法建立SAA小鼠模型(SAA组),并使用RAPA腹腔注射5 d治疗SAA小鼠(RAPA组)。骨髓活检病理学检查观察各组小鼠的骨髓造血组织变化;免疫磁珠分选出各组小鼠脾脏Treg细胞,用流式细胞术检测其凋亡率;Western blot法检测各组小鼠脾脏Treg细胞的Akt、磷酸化(p)-Akt、Stat3、p-Stat3的表达水平;收集各组小鼠外周血和脾脏中单个核细胞,用流式细胞术检测CD4+CD25+Foxp3+ Treg细胞的比例变化。 结果 与对照组相比,SAA组造血细胞明显减少,且造血细胞被大量的脂肪组织所代替,RAPA组造血细胞亦明显减少,可见大量脂肪细胞;对照组、SAA组、RAPA组小鼠胫骨骨髓造血组织面积分别为(94.25±4.20)%、(7.00±2.00)%、(9.75±1.83)%,差异有统计学意义(Welch F=1 441.822,P<0.001);RAPA组略高于SAA组[Δx=2.15%(95%CI 0.15%~5.35%),P=0.037]。对照组、SAA组、RAPA组脾脏Treg细胞凋亡率分别为(19.84±1.39)%、(29.85±2.72)%、(22.39±3.71)%,差异有统计学意义(F=18.338,P<0.001);RAPA组Treg细胞凋亡率明显低于SAA组。RAPA组脾脏Treg细胞中Akt、Stat3的表达水平高于SAA组,而p-Akt和p-Stat3表达水平低于SAA组(P值均<0.05)。SAA组、RAPA组的脾脏CD4+CD25+Foxp3+/CD4+CD25+、CD4+CD25+Foxp3+/CD4+细胞比例均低于对照组,且RAPA组明显高于SAA组(P值均<0.017)。 结论 IFN-γ联合白消安诱导的SAA模型小鼠脾脏Treg细胞存在过度凋亡现象,而RAPA可能通过抑制Treg细胞内Akt及Stat3的磷酸化上调Foxp3的表达,从而抑制Treg细胞的凋亡。
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Affiliation(s)
- Z H Lin
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, China
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Zhang PP, Ma HN, Zheng TT, Lin ZH. [Acute retropharyngeal abscess after open neck trauma: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:854-855. [PMID: 30453408 DOI: 10.3760/cma.j.issn.1673-0860.2018.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- P P Zhang
- Department of Otorhinolaryngology, First People's Hospital of Yuhang District, Hangzhou 311100, China
| | - H N Ma
- Department of Otorhinolaryngology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 311100, China
| | - T T Zheng
- Department of Otorhinolaryngology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 311100, China
| | - Z H Lin
- Department of Otorhinolaryngology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 311100, China
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15
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Duan HG, Lin ZH, Fan GK, Chen M, Wang HL, Yang BB, Yuan H. [Extraluminal foreign body originated from pharynx and esophagus: a series of 10 patients]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:387-389. [PMID: 29764023 DOI: 10.3760/cma.j.issn.1673-0860.2018.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- H G Duan
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Z H Lin
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - G K Fan
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - M Chen
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - H L Wang
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - B B Yang
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - H Yuan
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
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Chen Y, Liu ZH, Lin ZH, Shi XZ. Eyes in pituitary disorders. J BIOL REG HOMEOS AG 2018; 32:97-99. [PMID: 29504371] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The eye is a vital sense organ related to vision, conveying the underlying physical and mental state of well-being of an individual. Eye signs are often associated with endocrinal disorders such as exophthalmos in thyro-toxicosis. However, a thorough eye evaluation may lead to the identification of the early features that help in the diagnosis of various endocrine disorders. This is of vital importance especially in the central nervous system lesions. This is observed more in cases of pituitary mass lesions, which often present with functional hormonal alterations rather than visual symptoms. The definitive therapy has to be provided before it reaches the late stage of the disease which might lead to permanent visual disabilities. Hence, ophthalmologists, endocrinologists, neuro-radiologists and neurosurgeons need to intervene with combined efforts. In this review, we highlight the eye signs in pituitary disorders, along with a brief description of uncommon ocular-pituitary syndromes.
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Affiliation(s)
- Y Chen
- Department of Ophthalmology, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin province, China
| | - Z H Liu
- Department of Ophthalmology, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin province, China
| | - Z H Lin
- Department of Ophthalmology, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin province, China
| | - X Z Shi
- Department of Ophthalmology, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin province, China
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Wang B, M Liu M, Wang BW, Li J, Lin ZH. Combined 3D-QSAR and Molecular Docking Study on benzo[h][1,6]naphthyridin-2(1H)-one Analogs as mTOR Inhibitors. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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18
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Qian J, Lu W, Yang L, Zhang YP, Yang X, Lin ZH, Liu H. [Efficacy and safety of recombinant human thrombopoietin combined with hormonal and cyclosporine in 20 patients with newly diagnosed immune-related pancytopenia]. Zhonghua Xue Ye Xue Za Zhi 2017; 38:1078-1081. [PMID: 29365407 PMCID: PMC7342188 DOI: 10.3760/cma.j.issn.0253-2727.2017.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | - H Liu
- Affilicated Hospital of Nantong University, Nantong 226001, China
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19
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Duan HG, Lin ZH, Fan GK, Xu L. [Acute frontal sinusitis with intracranial and extracranial infection: report of two cases]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:626-627. [PMID: 28822422 DOI: 10.3760/cma.j.issn.1673-0860.2017.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- H G Duan
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Z H Lin
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - G K Fan
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - L Xu
- Department of Otorhinolaryngology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
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Li W, Jiao HF, Lin ZH, Bao YB. Characterization of novel expressed sequence tag-simple sequence repeat markers and analysis of genetic diversity in four geographic populations of Thais luteostoma. Genet Mol Res 2016; 15:gmr-15-gmr15048702. [PMID: 27813569 DOI: 10.4238/gmr15048702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, the genetic diversity in four geographic populations (Yushan Island, Zhoushan, Wenzhou, and Xiamen) of Thais luteostoma was analyzed using 21 microsatellite loci. The results of this study showed that the alleles obtained from different populations ranged from 2 to 8. The average number of alleles and effective alleles were 4.59 and 3.16, respectively. The observed heterozygosity and expected heterozygosity values were in the range 0.338-0.372 and 0.452-0.495, respectively. The polymorphism information content ranged from 0.273 to 0.785. We observed a high level of genetic diversity at 9 of the 21 microsatellite markers in these populations. The genetic differentiation indices of the four geographic populations ranged from 0.0312 to 0.0565, showing a medium level of genetic differentiation. The genetic distances among populations ranged from 0.158 to 0.465. The UPGMA tree indicated that the Yushan Island and Zhoushan populations clustered first, and these subsequently clustered with the Wenzhou and Xiamen populations, indicating that the Xiamen shellfish population was least related to the other populations. The information regarding the shellfish population structure obtained in this study would facilitate the genetic breeding and conservation of T. luteostoma.
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Affiliation(s)
- W Li
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, Zhejiang Wanli University, Ningbo, China
| | - H F Jiao
- Ningbo Institute of Marine and Fishery, Ningbo, China
| | - Z H Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, Zhejiang Wanli University, Ningbo, China
| | - Y B Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, Zhejiang Wanli University, Ningbo, China
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Yang X, Liu H, Lin ZH, Qian J, Xu XR. [Inhibitory effect of RNA interference targeting GFI-1 on the proliferation of atypical chronic myelogenous leukemia NT1 cells]. Zhonghua Zhong Liu Za Zhi 2016; 38:572-7. [PMID: 27531476 DOI: 10.3760/cma.j.issn.0253-3766.2016.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the inhibitory effects of RNA interference targeting GFI-1 on growth and proliferation of atypical chronic myelogenous leukemia (aCML) NT1 cells. METHODS NT1 cells were transfected with PBS and liposome complex (vehicle group), scrambled siRNA and liposome complex (negative control, NC group), and GFI-1 siRNA and liposome complex (GFI-1 siRNA group), respectively. Real-time quantitative RT-PCR (qRT-PCR) and Western blot were performed to examine the expression levels of GFI-1 mRNA and protein, respectively. The proliferation abilities of NT1 cells of the three groups were evaluated by MTT assay. The cell cycle in cells of the three groups was analyzed by flow cytometry. Moreover, nude mouse xenograft model was used to detect the tumor formation ability in the three group cells. RESULTS Quantitative real-time PCR data showed that the expression level of GFI-1 mRNA in GFI-1 siRNA group was significantly lower than those of NC group and vehicle group [(0.367±0.017) vs. (0.918±0.006) and (1.010±0.005), respectively, (P<0.05)]. Western blot results showed that the GFI-1 protein expression level in the GFI-1 siRNA group was also significantly reduced, compared with those of the NC group and vehicle group (P<0.05 for both). From MTT assay data, the absorbance value of NT1 cells in the GFI-1 siRNA group (0.667±0.059) was significantly lower than those of the NC group (1.096±0.049) and vehicle group (1.193±0.064, P=0.023). Flow cytometry data showed that sub-G1 and G0/G1 phase proportions of the GFI-1 siRNA group were significantly higher than those of the NC and vehicle groups [sub-G1: (8.2±2.5)% vs. (1.9±1.3)% and (2.0±3.6)%, respectively, (P<0.05); G0/G1: (66.7±3.8)% vs. (53.3±4.5)% and (48.6±3.2)%, respectively, (P<0.05)]. Furthermore, the tumor weight in the GFI-1 siRNA group [(0.37±0.02) g] was significantly lower than those in the NC group [(0.83±0.06) g] and vehicle group [(0.92±0.04) g] (P<0.05). CONCLUSIONS RNA interference targeting GFI-1 inhibits the growth and proliferation of NT1 cells, which may provide a new therapeutic target for atypical chronic myelogenous leukemia.
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Affiliation(s)
- X Yang
- Department of Hematology, the Affiliated Hospital of Nantong University, Nantong 226000, China
| | - H Liu
- Department of Hematology, the Affiliated Hospital of Nantong University, Nantong 226000, China
| | - Z H Lin
- Department of Hematology, the Affiliated Hospital of Nantong University, Nantong 226000, China
| | - J Qian
- Department of Hematology, the Affiliated Hospital of Nantong University, Nantong 226000, China
| | - X R Xu
- School of Public Health, Nantong University, Nantong 226000, China
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Dong YH, Yao HH, Sun CS, Lv DM, Li MQ, Lin ZH. Development of polymorphic SSR markers in the razor clam (Sinonovacula constricta) and cross-species amplification. Genet Mol Res 2016; 15:gmr7285. [PMID: 26909924 DOI: 10.4238/gmr.15017285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Next-generation sequencing provides large-scale sequencing data with relative ease and at a reasonable cost, making it possible to identify a large amount of SSR markers in a timely and cost-effective manner. On the basis of the transcriptome database of Sinonovacula constricta obtained by Illumina/Solexa pyrosequencing, 60 polymorphic SSR markers were developed and characterized in 30 individuals. The number of alleles per polymorphic locus ranged from 2 to 7 with an average of 3.75 alleles. The observed and expected heterozygosities varied from 0.050 to 1.000 and from 0.050 to 0.836, respectively. Nineteen loci significantly deviated from Hardy-Weinberg equilibrium (P < 0.01) after Bonferroni's correction for multiple tests. In addition, interspecific transferability revealed that 20 polymorphic loci in Solen linearis were first characterized in this study. To the best of our knowledge, this is the highest number of SSRs in S. constricta and the first report of cross-species amplification. These novel polymorphic SSR markers will be particularly useful for conservation genetics, evolutionary studies, genetic trait mapping, and marker assisted selection in the species.
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Affiliation(s)
- Y H Dong
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences
| | - H H Yao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences
| | - C S Sun
- College of Life Sciences, Taizhou University, Linhai, China
| | - D M Lv
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences
| | - M Q Li
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences
| | - Z H Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences
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Dong YH, Yao HH, Shi SF, Bao YB, Lin ZH. Development of novel polymorphic microsatellite markers for the blood clam Tegillarca granosa by pyrosequencing. Genet Mol Res 2015; 14:8977-87. [PMID: 26345829 DOI: 10.4238/2015.august.7.6] [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
Large amounts of expressed sequence tags (ESTs) generated using next-generation sequencing technologies provide a cost-effective and valuable genomic resource for the development of microsatellite markers. In this study, we isolated 115 novel polymorphic microsatellite markers for the blood clam Tegillarca granosa from ESTs in 454 sequencing data. All the loci were characterized in 30 individual clams from a natural population in Xiangshan (Zhejiang Province, China). The number of alleles per locus varied from 2 to 10, with an average of 3.78. The observed and expected heterozygosities ranged from 0 to 1 and from 0.040 to 0.799, respectively. The polymorphic information content (PIC) ranged from 0.038 to 0.825, and 29 highly polymorphic loci (PIC ≥ 0.5) and 42 moderately polymorphic loci (0.25 < PIC < 0.5) were identified. Thirty-eight of the 115 loci deviated significantly from the Hardy-Weinberg equilibrium (P < 0.01) after a Bonferroni correction. A BlastX search revealed that 46 (40%) of the polymorphic loci identified were from transcript regions of known genes. The microsatellite markers developed in the present study will greatly enrich the microsatellite resources of T. granosa, and are available for further population genetic analysis, genetic trait mapping, and molecular-assisted selection.
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Affiliation(s)
- Y H Dong
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - H H Yao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - S F Shi
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Y B Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Z H Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
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Gu XF, Dong YH, Yao HH, Zhou XL, Qi XY, Lin ZH. Microsatellite marker analysis reveals the distinction between the north and south groups of hard clam (Meretrix meretrix) in China. Genet Mol Res 2015; 14:1210-9. [PMID: 25730059 DOI: 10.4238/2015.february.6.23] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Meretrix meretrix is one of the important commercial bivalves in China. A total of 198 individual clams were collected from 5 locations characteristic of the clam's 5 main natural habitats in China, that is, Shandong, Jiangsu, Fujian, Guangdong, and Guangxi. Ten polymorphic microsatellite markers were selected to examine the genetic diversity and identify genetic differences between the 5 populations. A total of 183 alleles across 10 loci were detected in the individual clams. The observed heterozygosity and expected heterozygosity ranged from 0.197 to 0.7026 and from 0.6264 to 0.9408, respectively. The genetic diversity within samples was high (8.6-11.2 alleles per locus, observed heterozygosity = 0.25-0.875 and expected heterozygosity = 0.6848-0.9259). Most of the genotype distributions significantly deviated from Hardy-Weinberg equilibrium. Genetic structure analysis showed that the 5 populations could be divided into 2 groups, the north and south groups. Neighbor-joining analysis revealed a clear distinction between the north group (Shandong and Jiangsu) and the south group (Fujian, Guangdong, and Guangxi). Locus MM1031 was used to distinguish between groups. Our results can be used for population identification and crossbreeding of M. meretrix.
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Affiliation(s)
- X F Gu
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Y H Dong
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - H H Yao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - X L Zhou
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - X Y Qi
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Z H Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
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Chern MC, Chuang VP, Liang CT, Lin ZH, Kuo TM. Transcatheter arterial chemoembolization for advanced hepatocellular carcinoma with portal vein invasion: safety, efficacy, and prognostic factors. J Vasc Interv Radiol 2013; 25:32-40. [PMID: 24290099 DOI: 10.1016/j.jvir.2013.10.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [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: 04/24/2013] [Revised: 10/10/2013] [Accepted: 10/10/2013] [Indexed: 01/09/2023] Open
Abstract
PURPOSE To evaluate the safety and efficacy of transarterial chemoembolization and to identify the prognostic factors associated with survival in patients with hepatocellular carcinoma (HCC) and portal vein (PV) invasion. MATERIALS AND METHODS From January 2006 to March 2012, 50 patients with HCC invading into the PV (Barcelona Clinic Liver Cancer stage C) were treated with transarterial chemoembolization. The parenchymal tumor and PV tumor were confirmed by multidetector computed tomography (CT) and angiography. There were 14 patients with right PV tumor, 12 patients with left PV tumor, and 24 patients with main PV tumor. The response was evaluated by multidetector CT using Response Evaluation Criteria in Solid Tumors. Patients with residual tumors received repeated transarterial chemoembolization every 6-8 weeks unless the patients achieved complete remission or developed contraindications. RESULTS The median survival period of the entire group was 6.2 months (range, 1.7-50.9 mo), and the overall response rate was 42% (21 of 50 patients). The 6-month, 12-month, 24-month, and 36-month survival rates were 54%, 22%, 10%, and 8%. There were no instances of 30-day mortality or acute liver failure related to transarterial chemoembolization. The median survival of the 21 responders was 10.5 months, and the median survival of the 29 nonresponders was 5.5 months (P < .001). In both univariate and multivariate analyses, only the response to transarterial chemoembolization (hazard ratio = 0.25, P < .001) and the absence of ascites (hazard ratio = 0.24, P = .01) were significant prognostic factors. CONCLUSIONS Transarterial chemoembolization is a safe and effective treatment for HCC with major PV invasion. The response to transarterial chemoembolization and the ascites status were the most significant predictive factors for prolonged survival.
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Affiliation(s)
- Ming-Chih Chern
- Department of Radiology, Sun Yat-Sen Cancer Center, 125 Li-der Road, Bei-Tou District, Taipei, Taiwan.
| | - Vincent P Chuang
- Department of Radiology, Sun Yat-Sen Cancer Center, 125 Li-der Road, Bei-Tou District, Taipei, Taiwan
| | - Chung-Ting Liang
- Department of Radiology, Sun Yat-Sen Cancer Center, 125 Li-der Road, Bei-Tou District, Taipei, Taiwan
| | - Z H Lin
- Department of Radiology, Sun Yat-Sen Cancer Center, 125 Li-der Road, Bei-Tou District, Taipei, Taiwan
| | - Tse-Ming Kuo
- Department of Radiology, Sun Yat-Sen Cancer Center, 125 Li-der Road, Bei-Tou District, Taipei, Taiwan
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Abstract
Hemoglobin (Hb) is the major protein component of erythrocytes in animals with red blood, although it can serve additional functions beyond the transport of oxygen. The blood clam (Tegillarca granosa) is one of the few mollusks that has Hb, although the structure and function of molluskan Hbs remain unclear. We characterized two unique and highly compartmentalized blood clam hemoglobin genes, Tg-HbIIA and Tg-HbIIB, at the molecular level. The full-length cDNA of Tg-HbIIA was 731 bp with a 450-bp open reading frame encoding 150 amino acids; that of Tg-HbIIB was 698 bp, with a 456-bp open reading frame encoding 152 amino acids. Their intronic regions were amplified by PCR. The two genes showed the typical 2 intron/3 exon organization found in T. granosa. The 3-D structures of the three blood clam Tg-Hbs were predicted using the SWISS-MODEL Protein Modeling Server, and a phylogenetic analysis was conducted to investigate its evolution. As quantified by qRT-PCR, the expression levels of Tg-HbIIA and Tg-HbIIB were significantly upregulated upon challenge by Vibrio parahaemolyticus, lipopolysaccharides, and peptidoglycans. Three Hb isoforms, Tg-HbI, Tg-HbIIA, and Tg-HbIIB, were found. Specific structures and evolutionary features were found in these molluskan Hb genes. Challenge experiments indicated that Tg-Hbs are involved in immune defense responses against bacterial infection and bacterial pathogenic factors. As this is the first functional research on Hb genes in the blood clam, our findings provide new insight into the innate immune defense mechanisms of T. granosa.
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Affiliation(s)
- Y B Bao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang, China
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27
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Abstract
AIMS The objective was to demonstrate the size of silver particles produced by the filamentous fungus Phoma sp.3.2883 via adsorption and accumulation, and to confirm that this silver was in a reduced state. METHODS AND RESULTS Mycelium was freeze-dried and then shake-cultured in a silver nitrate solution. It was found that up to 13.4 mg of silver was produced per gram of dry mycelium via atomic absorption spectrometer (AAS) analysis. The silver particles adsorbed on the mycelium were observed and measured under transmission electron microscope and their estimated size was 71.06 +/- 3.46 nm. Further examination of the particles via X-ray photoelectron spectroscope confirmed that the adsorbed silver particle had been reduced. CONCLUSION The frozen mycelium of Phoma sp3.2883 has the potential for use in silver nanoparticle production. SIGNIFICANCE AND IMPACT OF THE STUDY Silver nanoparticles could be used in the oil industry as an important catalyst and in the field of human medicine as a bactericide. The fungus Phoma sp3.2883 is a potential biosorbent that could be used for the production of these silver nanoparticles, and may also be useful in waste detoxification and in silver recovery programmes.
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Affiliation(s)
- J C Chen
- Department of Biochemical Engineering, Beijing University of Chemical University, Beijing, China.
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Abstract
Using the cultured chicken embryonic chondrocytes as a model, the effects of simulated microgravity on the microtubular system of the cellular skeleton, extracellular matrix, alkaline phosphatase activity, intracellular free calcium concentration and mitochondrial ATP synthase activity with its oligomycin inhibition rate were studied with a clinostat. The microtubular content was measured by a flow cytometer. The decrease of microtubular content showed the impairment of the cellular skeleton system. Observation on the extracellular matrix by the scanning electron microscopy showed that it decreased significantly after rotating, and the fibers in the extracellular matrix were more tiny and disorderly than that of the control group. It can be concluded that the simulated microgravity can affect the secreting and assembly of the extracellular matrix. In contrast to the control, there was a time course decrease in alkaline phosphatase activity of chondrocytes, a marker of matrix mineralization. Meanwhile a significant drop in the intracellular calcium concentration happened at the beginning of rotation. These results indicate that simulated microgravity can suppress matrix calcification of cultured chondrocytes, and intracellular free calcium may be involved in the regulation of matrix calcification as the second signal transmitter. No significant changes happened in the mitochondrial ATP synthase activity and its oligomycin inhibition rate. Perhaps the energy metabolism wasn't affected by the simulated microgravity. The possible mechanisms about them were discussed.
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Affiliation(s)
- X Zhang
- Institute of Biophysics, Chinese Academy of Science, Beijing, China
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Lin ZH, Liu SS, Li ZL. [Quantitative structure-retention relationship (QSRR) studies of polychlorinated dibenzofurans (PCDFs) on diverse gas chromatographic stationary phases on a set of novel molecular distance edge vector]. Se Pu 2001; 19:116-23. [PMID: 12541652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
By taking phenyl as a pseudo atom, there are three types of atom in the polychlorinated dibenzofuran (PCDF) molecule, being chlorine atom, oxygen atom and pseudo atom. The chemical structure of PCDF congeners is depicted by a novel molecular distance-edge vector(VMDE, mu in short), developed in our laboratory, which consists of the modified VMDE parameters based on the identical group as a pseudo atom instead of a traditional atom. Furthermore quantitative structure-retention relationships (QSRR) between the new mu vector and gas chromatographic (GC) retention behavior of PCDFs are generated by multiple linear regression method for various stationary phases. Four models, each of which is constructed by using all sample sets, with high correlation coefficient, r > 0.98, are developed for three columns (DB-5, SE-54, OV-101). In order to test the equation stability and prediction ability of each model, it is essential to perform a cross validation (CV) procedure. Satisfactory CV results have been obtained by using one external predicted sample every time with high correlation coefficients, r > 0.97. These results show that the new mu vector has high structural selectivity and good property relativity, and it is easy to calculate the mu vector. And the QSRR models have high relative coefficients, good stability and good predictability.
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Affiliation(s)
- Z H Lin
- College of Environment and Chemistry and Chemical Engineering, Chongqing University, Department of Chemistry, Yuzhou University, Chongqing, China
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Lin ZH, Chuang VP, Soong TC, Lin CK, Chan KY. Safety and effectiveness of percutaneous fluoroscopic gastrostomy in cancer patients. J Formos Med Assoc 2000; 99:206-12. [PMID: 10820952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
PURPOSE To evaluate the safety and effectiveness of percutaneous fluoroscopic gastrostomy (PFG) in cancer patients. METHODS We retrospectively analyzed the success rate, complication rate, and patient outcomes of PFG performed during a 15-month period in our hospital. The Cope type 10-French and 12-French self-retaining catheters were used for gastrostomy. RESULTS Of the 113 PFG procedures requested during the study period, 112 (99.1%) were performed successfully; one procedure was cancelled because the nasogastric tube could not be passed through the obstructed esophagus. Thirty-day follow-ups were obtained for 92.0% of the procedures. Of the patients with at least 30 days of follow-up, eight (7.8%) died, but only two deaths (1.9%) were procedure-related. Major complications, including peritonitis and severe wound infection, occurred after eight procedures (7.8%). Minor complications, including superficial wound infection, tube fracture, leakage, severe pain, mild hemorrhage, and tube migration, occurred after 23 procedures (22.3%). The severity of pneumoperitoneum was significantly associated with the frequency of complications (p < 0.05). After placement of the gastrostomy, 68% of the patients maintained or increased their initial body weight; 28% lost 10% or less of their body weight; and 4% lost more than 10% of their body weight. CONCLUSIONS PFG appears to be effective and relatively safe for long-term nutritional support in cancer patients.
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Affiliation(s)
- Z H Lin
- Department of Diagnostic Radiology, Sun Yat-Sen Cancer Center, Taipei, Taiwan
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Lin ZH, Xie LD, Wu KG, Wang HJ, Xu CS. Effects of fluvastatin on structure and function of resistant vessels in spontaneously hypertensive rats. Zhongguo Yao Li Xue Bao 1999; 20:855-60. [PMID: 11245097] [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: 02/19/2023]
Abstract
AIM To evaluate the effects of fluvastatin, a hydroxymethylglutaryl-CoA (HMG-CoA) reductase inhibitor, on the alterations of structure and function of resistant vessels in spontaneously hypertensive rats (SHR). METHODS Eight-week-old male SHR were given fluvastatin 20 mg.kg-1.d-1 by gavage. Rats were decapitated at 16 wk. Wall-to-lumen area ratios (W/L) of thoracic aorta and mesenteric arteries (3rd grade branch) were assessed by morphometric assay. The effects of fluvastatin on vascular reactivity to sodium nitroprusside (SNP) and norepinephrine (NE), were studied with rings of thoracic aorta and mesenteric arteries isolated from rats. RESULTS After 8 wk of treatment, histological examination showed that the wall-to-lumen area ratio was lower in SHRflu than that in SHR (0.44 +/- 0.09 vs 0.79 +/- 0.09, P < 0.05). EC50 of vasodilation response was much lower in SHRflu than that in SHR [(4.9 vs 190) pmol.L-1, P < 0.05], while EC50 of mesenteric artery rings from SHRflu was somewhat lower than that of SHR [(0.02 vs 0.04) nmol.L-1, P > 0.05]. In both aortic and mesenteric artery rings, EC50 of vasoconstriction in response to NE from SHRflu was higher than that of SHR [thoracic aorta: (0.20 vs 0.02) nmol.L-1, P < 0.05; mesentric arteries: (1.46 vs 0.72) nmol.L-1, P < 0.05]. CONCLUSION Short-term treatment with fluvastatin ameliorated the vasomotoricity of resistant vessels, enhanced the sensitivity to vasodilator and depressed the sensitivity to vasoconstrictor; fluvastatin also attenuated the resistant vascular hypertrophy during the development of hypertension in SHR.
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Affiliation(s)
- Z H Lin
- Hypertension Division, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
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32
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Abstract
Since 1980, Chinese enterprises have been undergoing reforms in employment practice, taxation, and workers' health/welfare benefits coverage. In particular, Chinese businesses have been facing a major challenge with respect to the financial burden of providing medical benefits to their workers. The purpose of this paper is to analyse the impact of enterprise reform on workers' health care benefits and their financial burden due to medical expenses. This study is based on a 1992 survey conducted in 22 cities, and included 406 enterprises and 5920 workers. It was found that there were wide variations of coverage for health care benefits among urban Chinese workers. It was also found that workers with partial coverage were as likely to incur out-of-pocket medical expenditures as workers without coverage. These out-of-pocket medical expenditures could reach as high as 25% of a worker's annual income. Policy recommendations are discussed at the end of the paper.
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Affiliation(s)
- T W Hu
- School of Public Health, University of California, Berkeley 94720-7360, USA
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33
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Abstract
Thirty sequences of a short interspersed repetitive element (SINE) were isolated from genomic DNA of Hippopotamus amphibius (hippopotamus). RNA polymerase III split promoter sequence was observed in all of the 30 sequences; and poly(A)-like structure at 3'-end, as well as direct repeat flanking to the repetitive sequence in many of the 30 sequences. A comparison of the consensus sequence of the 30 sequences with sequences in a DNA database (DDBJ/GENBANK/EMBL) revealed 93% homology to the consensus sequence of a whale SINE, CHR-2, and 73% homology to mouse glutamic acid tRNA. Phylogenetic analysis of tRNA-related regions of the sequences with all of the mouse tRNAs revealed that glutamic acid tRNA was genetically closest to the hippopotamus SINE. In addition, the tRNA-related region of the consensus sequence was folded into a cloverleaf structure as with mouse glutamic acid tRNA. These findings led us to conclude that the SINE of hippopotamus was genetically related to a whale SINE, CHR-2 [the hippopotamus SINE was named CHR-2(hippo)] and was a retroposon derived from glutamic acid tRNA. Hipo53 and hipo95, which were the genetically most separated CHR-2(hippo) sequences in the present study, were used as a probe for dot-blot hybridization to examine the distribution of their homologous sequences among animal species. Although the distribution spectra of hipo53 and hipo95 homologous sequences in animal species differed to some extent, large amounts of both sequences were found in Hippopotamus amphibius and Globicephala macrorhynchus (whale); and small amounts in most of the animal species in Artiodactyla examined. These findings indicated that the hippopotamus and whale had more recently branched off from the clade that includes chevrotain and pecorans than the other animal species in the clade. The 30 CHR-2(hippo) sequences were aligned, and the substitution rates among the sequences were calculated with a different substitution rate model for transition and for transversion. The calculation combined with the mutation rate of the pseudogenes (r = 4.6 x 10(9)) indicated that CHR-2(hippo) sequences diversified at least 132 million years ago (Myr).
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Affiliation(s)
- O Nomura
- Science and Technology Corporation, Saitama, Japan
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34
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Affiliation(s)
- Z H Lin
- Department of Animal Breeding and Genetics, National Institute of Animal Industry, Tsukuba, Japan
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Yasue H, Adams L, Ozawa A, Hanazono M, Li N, Lin ZH, Kusumoto H. Assignment of ARAF1 to porcine chromosome Xp11.2-p13 by fluorescence in situ hybridization. Mamm Genome 1997; 8:457-8. [PMID: 9166601 DOI: 10.1007/s003359900473] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- H Yasue
- Animal Genome Research Group, National Institute of Animal Industry, Norindanchi P.O. Box 5, Tsukuba, Ibaraki 305, Japan
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36
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Li SG, Gui LL, Lin ZH, Wan ZL, Chang WR, Liang DC. Purification and crystal growth of F1-ATPase from pig heart mitochondria. Biochem Mol Biol Int 1996; 40:479-86. [PMID: 8908356 DOI: 10.1080/15216549600201043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A method has been evolved toward the aim of getting suitable crystals for high resolution of structural analysis of F1-ATPase by X-ray crystallography. The different conditions for crystal growth of ATPase that were isolated and purified by different methods from pig heart mitochondrial ATP synthase had been compared and screened. A simple method for purification of F1-ATPase was adopted. The F1-ATPase is released with chloroform from submitochondrial particles. Then it was treated with fractional precipitation of (NH4)2SO4 and finally was further purified by employing the sephadex G 200 column. The crystals of F1-ATPase were usually obtained after a few months. They appeared to have uniform morphology of tetrahedron. They diffracted to a resolution of 7A. The diffraction data were collected on the XRD-100 Siemens Area Detector. According to a total of 240 frames, the cell parameters obtained are a = b = 147 A, c = 208 A, alpha = beta = gamma = 90 alpha, the probable space group is P4 or its antipode. The reproducibility of this method for crystallization of F1-ATPase is good.
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Affiliation(s)
- S G Li
- Institute of Biophysics, Chinese Academy of Sciences, National Laboratory of Biomacromolecules, Beijing, China
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Abstract
A piezoelectric immunosensor has been developed for the determination of human IgM. The crystals are AT-cut and have a basic resonant frequency of 9 MHz. Immobilization of goat antihuman IgM antibodies to the crystals' surfaces was accomplished via a CNBr-activated copolymer coating of 2-hydroxyethyl methacrylate and methylmethacrylate. The IgM piezoelectric immunosensor can be used for the human IgM determination in the range 5-93 micrograms ml-1. The analytical results given by this approach were in satisfactory agreement with those given by the single radical immunodiffusion procedure. The sensitivity, specificity and reproducibility of this immunosensor were investigated. Further, the valent value of goat antihuman IgM antibody binding with human IgM antigen and the affinity constant of immunoreaction in this experimental system were studied. After washing with tetrahydrofuran, a crystal can be re-used 20 times without detectable loss of sensitivity.
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Affiliation(s)
- X Chu
- Institute of Chemometrics and Chemical Sensing Technology, Hunan University, Changsha, China
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Li SG, Lin ZH, Feng ZY, Deng JP. [Elimination effect of ethyl alcohol on the DCCD-induced inhibition of hydrolytic activity of H+-ATPase complex]. Shi Yan Sheng Wu Xue Bao 1995; 28:389-96. [PMID: 8731970] [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: 02/01/2023]
Abstract
12.5% ethyl alcohol was added into the reaction system containing mitochondrial H(+)-ATPase complex of pig heart, which was preincubated with 0.5 microgram/ml DCCD dicyclohexylcarbodiimide) at 30 degrees C. Or the DCCD and ethyl alcohol were simultaneously incubated with H(+)-ATPase at 30 degrees C. In either case, the inhibition of the hydrolytic activity of H(+)-ATPase caused by DCCD could be completely eliminated in the presence of ethyl alcohol. If methyl alcohol was instead of ethyl alcohol, the DCCD inhibition could only be partly eliminated. In the replacement of ethyl alcohol by dimethyl sulfoxide, no elimination could be observed. After preincubation of 2 micrograms/ml oligomycin with H(+)-ATPase complex instead of DCCD, the same concentration of ethyl alcohol could not caused elimination effect, which indicates no un-coupling effect happened by ethyl alcohol. The kinetic experimental result showed that ethyl alcohol exhibits non-competitive inhibition to the hydrolytic activity of H(+)-ATPase complex. It was deduced that ethyl alcohol could result in conformational change of F1 of the complex, such as to affect the activity of the enzyme. The measurement of DPH (diphenylhexatriene) fluorescence polarization, the fluorescence labelled with N-(1-pyrenyl) maleimide and intrinsic fluorescence of H(+)-ATPase complex compared with control show that the three cases, i.e. only treated with DCCD, only treated with ethyl alcohol or treated with DCCD and ethyl alcohol, appear different conformations of H(+)-ATPase complex. But the conformation caused by DCCD and ethyl alcohol was more like that by ethyl alcohol. This is consistent with results obtained from activity of DCCD plus ethyl alcohol and only ethyl alcohol. These results mentioned above indicate that the mechanism of ethyl alcohol eliminating the DCCD-induced inhibition of H(+)-ATPase is a conformational interaction caused by DCCD and ethyl alcohol.
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Affiliation(s)
- S G Li
- Institute of Biophysics, Academia Sinica, Beijing, China
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Du J, Li SG, Lin ZH. Indomethacin inhibition of hog gastric H+/K(+)-ATPase arises from its effect on both the enzyme protein and the lipid bilayer. J Biochem 1994; 116:250-6. [PMID: 7822239 DOI: 10.1093/oxfordjournals.jbchem.a124515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Indomethacin showed a dose-, time-, and pH-dependent, noncompetitive inhibitory effect on hog gastric H+/K(+)-ATPase. Four percent of total indomethacin in the buffer (0.20 mmol/liter) bound to the H+/K(+)-ATPase vesicles (15 micrograms/ml). It markedly quenched the intrinsic fluorescence of the enzyme, and decreased the membrane fluidity. Thus, the inhibitor effect of indomethacin may arise from both a direct effect on the hydrolytic and H+ transport functions of the enzyme and a disturbing effect on the lipid bilayer of the vesicle.
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Affiliation(s)
- J Du
- Department of Molecular Biology, Chinese Academy of Sciences, Beijing
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40
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Wu JH, Li SG, Lin ZH. Product-activation of Escherichia coli membrane-bound H(+)-ATPase (F1F0-ATPase) connected with epsilon-subunit at alkaline pH. Biochim Biophys Acta 1994; 1185:50-5. [PMID: 8142415 DOI: 10.1016/0005-2728(94)90192-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Mutant strain AN1518 or AN2387 (Gly48-->Asp in epsilon-subunit) and partial revertant strain AN2540 (Gly48-->Asp, Pro47-->Ser in epsilon-subunit) of E. coli were used in a kinetic study of membrane-bound H(+)-ATPase. It was found that at pH 9.0 mutant strain AN1518 or AN2387 and partial revertant strain AN2540 gave a low initial rate, which increased with time until linearity was reached after 1-2 min. This phenomenon was prominent in mutant strains, but was not so obvious in wild-type AN346 of E. coli; this property is similar to F1-ATPase reported by Cox [1]. The mechanism of the slow activation of membrane-bound H(+)-ATPase was further investigated in this paper. The experimental results indicated that the hydrolytic rate of E. coli F1F0-ATPase that increased with time was membrane protein concentration- and pH-dependent, and that the product ADP produced during ATP hydrolysis is the factor causing the slow activation. Preincubation of the hydrolytic product ADP with a concentration comparable to that produced in the assay (20 microM) caused initial activation of ATP hydrolysis and abolished the slow activation. On the other hand, with the removal of ADP during the progress of the hydrolytic reaction it could be seen that the slow activation was abolished as well. In order to test the relationship between the epsilon-subunit and ADP involved in the slow activation, trypsin treatment was carried out on the membrane-bound H(+)-ATPase of various strains. The activation observed after trypsin treatment was on the order of AN1518 > AN2540 > AN346. The activation effects of ADP and trypsin were not found to be additive. This implies that ADP acted in a similar way to trypsin, i.e., to cause removal of the epsilon-subunit. A tentative mechanism of the slow activation was proposed that ADP, a product of ATP hydrolysis, could induce conformational changes of F1F0 at alkaline pH 9.0, thus weakening the binding strength between the epsilon-subunit and other subunits of F1F0, and resulting in removal or partial removal of the epsilon-subunit. This further impaired the coupling of F1 and F0 in the mutant strains; as a consequence the rate of ATP hydrolysis was increased.
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Affiliation(s)
- J H Wu
- Institute of Biophysics, Academia Sinica, Beijing, People's Republic of China
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41
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Du J, Lin ZH, Li SG. [Effect of indomethacin on H+ transportation of pig gastric H+/K(+)-ATPase]. Shi Yan Sheng Wu Xue Bao 1994; 27:61-70. [PMID: 8042409] [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
As a noncompetitive inhibitor of pig gastric H+/K(+)-ATPase, indomethacin inhibited the H+ transportation function of the enzyme, leading to not only the obvious dissipation of H+/K(+)-ATPase-generated H+ gradients, but also the decreasing of the H+ gradient formation ability of the enzyme. 4% of indomethacin was able to penetrate into the lipid bilayer of H+/K(+)-ATPase vesicles at 0.15 mg/ml protein concentration, which showed an influence of indomethacin to the membrane. Indomethacin reduced the membrane fluidity of H+/K(+)-ATPase vesicles significantly. It also damaged the conformation of membrane protein extraordinarily, which was evidenced by decreasing the intrinsic fluorescence of H+/K(+)-ATPase. From the results, we suggest that the effect of indomethacin on H+/K(+)-ATPase is taken place by its inhibition on H+/K(+)-ATPase protein, as well as by its influence on the membrane lipid bilayer of H+/K(+)-ATPase vesicles.
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Affiliation(s)
- J Du
- Division of Biomembrane, Chinese Academy of Science, Beijing
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42
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Chen ML, Lin ZH. [Advances in the experimental study and clinical uses of venous transplantation]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1993; 9:450-2. [PMID: 8149296] [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: 01/29/2023]
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43
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Qiao WJ, Lin ZH, Wu M. The chelating-resin modified electrode and its application in the detection of copper in human samples. J Tongji Med Univ 1992; 12:80-4. [PMID: 1433422 DOI: 10.1007/bf02887785] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new kind of carbon paste electrodes modified by chelating resin was prepared for detection of trace amount of copper in human hair. As the ion exchange between chelating resin and cupric ions and the coordination reaction on the modified electrode take place at the same time, this method has high sensitivity and good selectivity. The detection limit is 6 x 10(-9) mol/L. The average percentage of recovered copper is 108 +/- 8.3% and the variant coefficient (CV) 7.7%.
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Affiliation(s)
- W J Qiao
- Department of Chemistry, Tongji Medical University, Wuhan
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44
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Lu L, Shen RN, Zhou SZ, Wu B, Kim YJ, Lin ZH, Ruscetti S, Ralph P, Broxmeyer HE. Efficacy of recombinant human macrophage colony-stimulating factor in combination with whole-body hyperthermia in the treatment of mice infected with the polycythemia-inducing strain of the Friend virus complex. Exp Hematol 1991; 19:804-9. [PMID: 1907925] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Macrophage colony-stimulating factor (M-CSF, CSF-1) and whole-body hyperthermia (WBH) were evaluated, alone or in combination, for their capability to influence disease progression in mice inoculated with the polycythemia-inducing strain of the Friend virus complex (FVC-P). DBA/2 mice were injected i.v. with FVC-P and were treated with 20 micrograms/dose M-CSF s.c. twice a day for 5 days beginning 6 days after injection of FVC-P and/or with WBH (between 38.8 degrees C and 40.2 degrees C) given on days 5 and 12 after FVC-P injection. Fourteen days after viral inoculation, mice were sacrificed and spleen cells evaluated for: 1) spleen focus-forming virus (SFFV), by the spleen focus-forming unit assay (SFFU); 2) SFFV mRNA and genomic DNA using, respectively, Northern and Southern analysis with a B-E-SFFV DNA probe; and 3) natural killer (NK) cell activity, by 51Cr-release assay. Treatment with M-CSF or WBH alone had a small effect on SFFU numbers but little or no effect on SFFV mRNA expression and SFFV-specific DNA. However, dramatically decreased levels of SFFU and SFFV mRNA and specific DNA fragments were observed in mice treated with M-CSF in combination with WBH, and NK cell activity was restored to normal. These results suggest the possibility that M-CSF may have a therapeutic effect in combination with WBH in the in vivo treatment of certain hematologic malignancies and/or retroviral infections.
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Affiliation(s)
- L Lu
- Department of Medicine, Indiana University School of Medicine, Indianapolis
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45
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Lu L, Shen RN, Zhou SZ, Srivastava C, Harrington M, Miyazawa K, Wu B, Lin ZH, Ruscetti S, Broxmeyer HE. Synergistic effect of human lactoferrin and recombinant murine interferon-gamma on disease progression in mice infected with the polycythemia-inducing strain of the Friend virus complex. Int J Hematol 1991; 54:117-24. [PMID: 1660735] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Mice infected with the polycythemia-inducing strain of the Friend virus complex (FVC-P) have been used as a leukemic mouse model. In the present study, purified iron-saturated human lactoferrin (LF) and recombinant murine (rmu) interferon-gamma (IFN-gamma), alone or in combination, were used to influence disease progression in virally infected mice. DBA/2 mice were injected i.v. with FVC-P, and were treated s.c. with 100 micrograms LF at day 7, and/or rmuIFN-gamma at 5 x 10(4) units/day for 3 days beginning at day 6 after viral infection. Mice were assessed for survival, and also 14 days after virus inoculation, the mice were killed and spleen extracts were assessed for spleen focus forming virus (SFFV) titers by spleen focus forming unit (SFFU) assay, SFFV mRNA and genomic DNA expression, and natural killer (NK) cell activity. Treatment with LF or rmuIFN-gamma alone had little or no effect on SFFU numbers or SFFV mRNA or genomic DNA expression. However, dramatically decreased SFFV titers and levels of SFFV mRNA and genomic DNA were observed in mice treated with the combination of LF and rmuIFN-gamma. NK cell activity decreased by FVC-P was returned to normal levels by LF and rmuIFN-gamma. The combined treatment also enhanced the survival rates of FVC-P-infected mice. The results suggest synergistic suppressive effects of LF with rmuIFN-gamma on disease progression in FVC-P-infected mice. This information might be of significance as a potential therapy for patients with leukemia and those infected with retroviruses.
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Affiliation(s)
- L Lu
- Department of Medicine (Hematology/Oncology), Indiana University School of Medicine, Indianapolis 46202-5121
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46
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Lu L, Shen RN, Lin ZH, Aukerman SL, Ralph P, Broxmeyer HE. Anti-tumor effects of recombinant human macrophage colony-stimulating factor, alone or in combination with local irradiation, in mice inoculated with Lewis lung carcinoma cells. Int J Cancer 1991; 47:143-7. [PMID: 1985870 DOI: 10.1002/ijc.2910470125] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Recombinant human (rhu) macrophage colony-stimulating factor (M-CSF) was evaluated for efficacy, either alone or in combination with local X-irradiation (LR), in mice inoculated subcutaneously (s.c.) with Lewis lung carcinoma (LLC) cells. The size of the primary tumor and numbers of lung metastases, 21 days after tumor inoculation and 15 days after the start of treatment, were reduced by 87% in tumor-bearing mice treated with 20 micrograms/dose M-CSF s.c. twice a day for 5 days. LR (800 cGy) to the tumor once a week for 2 weeks had a moderate anti-tumor effect and enhanced the anti-tumor effect of M-CSF. Hematological parameters, including nucleated cellularity in peripheral blood, femoral marrow, spleen and peritoneal exudate, as well as marrow and splenic granulocyte-macrophage progenitor cells, and numbers of splenic Thy 1.2+ cell and peritoneal mast cells, were perturbed in LLC-bearing mice, and were influenced by treatment with M-CSF and LR. Treatment with M-CSF plus LR, but not with either agent alone, was associated with a significant, although slight, enhancement in survival time for LLC-bearing mice. Inability to obtain a better survival-enhancing effect appeared to be related to the limited treatment, since the anti-tumor effects of M-CSF were more notable early on in disease progression and were related to the dose of M-CSF used. The effects of M-CSF were most probably indirect ones on the host immune system. M-CSF, in combination with LR, may be of benefit in the treatment of human tumors that have metastatic potential.
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Affiliation(s)
- L Lu
- Department of Medicine (Hematology/Oncology), Indiana University School of Medicine, Indianapolis 46202
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47
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Lu L, Lin ZH, Shen RN, Warren DJ, Leemhuis T, Broxmeyer HE. Influence of interleukins 3,5, and 6 on the growth of eosinophil progenitors in highly enriched human bone marrow in the absence of serum. Exp Hematol 1990; 18:1180-6. [PMID: 1699774] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Purified preparations of natural murine interleukin (IL)-5 and recombinant human IL-1 alpha, IL-3, and IL-6 were evaluated alone, and in combination, for effects in vitro on colony formation by eosinophil progenitors (eosinophil colony-forming units, CFU-Eos) in either nonadherent low-density T-lymphocyte depleted (NALT-) or fluorescence-activated cell sorted NALT-HLA-DR+ CD34 (My10) cells from normal human bone marrow, in the absence and presence of serum. Interleukins were assessed on CFU-Eos plated directly in agar, or on CFU-Eos placed in suspension culture for 7 days prior to plating in agar in the presence of IL-5. Eosinophil colonies were identified in situ by staining with Luxol fast blue. IL-3 and IL-5 acted in agar culture as direct stimulators of CFU-Eos, using highly purified cells in the HLA-DR+ My10 fraction of cells, the specificity for CFU-Eos being greatest for IL-5 and most demonstrable in the absence of serum. The IL-3 and IL-5 direct stimulating effects on CFU-Eos were additive. IL-1 alpha and IL-6 had little or no effect, alone or in combination with IL-3 and IL-5; however, IL-3, IL-5, and IL-6 each enhanced the number of IL-5-responsive CFU-Eos found after suspension culture compared to control medium, with the individual effects being additive when the molecules were combined. These results demonstrate that both IL-3 and IL-5, alone and in combination have direct-acting effects on CFU-Eos, with the greatest specificity for stimulation of pure Eos colonies and clusters residing in IL-5, and that IL-3, IL-5, and IL-6, alone and in combination, may play a role in the survival of CFU-Eos.
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Affiliation(s)
- L Lu
- Department of Medicine,(Hematology/Oncology), Indiana University School of Medicine, Indianapolis
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48
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Ye JJ, Lin ZH. Specificity of acidic phospholipids (CL & PA) in the activation of mitochondrial F0F1 ATPase by Mg2+. Biochem Int 1990; 22:219-26. [PMID: 2151017] [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
The interaction of Mg2+ with native F0F1 ATPase was studied. The hydrolytic activity of F0F1 ATPase could be competitively activated by Mg2+, but the preincubation of F0F1 ATPase with cholate eliminated the Mg2+ effect. The result from the comparison of the effect of Mg2+ on F0F1 ATPase with that on soluble F1 ATPase, and the fact that the activation of Mg2+ on cholate-treated F0F1 ATPase could be reconstituted only by divalent acidic phospholipid cardiolipin, indicate that there exists a specificity between the acidic phospholipids of the mitochondrial inner membrane and Mg2+ enhancement of ATP-hydrolyzing activity of F0F1 ATPase.
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Affiliation(s)
- J J Ye
- Institute of Biophysics, Academia Sinica, Beijing, P.R.C
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49
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Lin ZH. [Clinical application of a paraumbilical axial flap--report of 16 cases]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1989; 5:249-50, 315. [PMID: 2517228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The paraumbilical skin flap is based on the deep inferior epigastric artery and its paraumbilical perofrators. It can be transferred not only as a free flap but also as a pedicle flap or island flap. Since December 1987, we have successfully used the flap to repair the wounds and to reconstruct penis in 16 cases. The merits of the flap are as follows: The position of deep inferior epigastric artery is constant. The blood supply to the flap is good. The flap has a long vascular pedicle and the donor site is concealed.
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50
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Ye JJ, Du J, Lin ZH. The effect of Mg2+ on mitochondrial F0.F1 ATPase and characteristics of the nucleotide binding sites. Biochem Int 1989; 19:1317-21. [PMID: 2534570] [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: 01/01/2023]
Abstract
The interaction of Mg2+ with nucleotide-washed F0.F1 ATPase from pig heart was studied. Mg2+ had no effect on nucleotide-washed F0.F1 ATPase, but it competitively inhibited the hydrolytic activity of washed F0.F1 ATPase preincubated with ADP and slightly activated the hydrolytic activity of washed F0.F1 ATPase preincubated with ATP. In the last two cases, it revealed negative cooperativity. The effect of Mg2+ on F0.F1 ATPase is therefore closely related to the characteristics of the nucleotide binding sites on mitochondrial F0.F1 ATPase.
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Affiliation(s)
- J J Ye
- Institute of Biophysics, Academia Sinica, Beijing, China
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