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Liu XM, Duan HY, Zhang DQ, Chen C, Ji YT, Zhang YM, Feng ZW, Liu Y, Li JJ, Zhang Y, Li CY, Zhang YC, Yang L, Lyu ZY, Song FF, Song FJ, Huang YB. [Exploration and validation of optimal cut-off values for tPSA and fPSA/tPSA screening of prostate cancer at different ages]. Zhonghua Zhong Liu Za Zhi 2024; 46:354-364. [PMID: 38644271 DOI: 10.3760/cma.j.cn112152-20230805-00062] [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: 04/23/2024]
Abstract
Objective: To determine the total and age-specific cut-off values of total prostate specific antigen (tPSA) and the ratio of free PSA divided total PSA (fPSA/tPSA) for screening prostate cancer in China. Methods: Based on the Chinese Colorectal, Breast, Lung, Liver, and Stomach cancer Screening Trial (C-BLAST) and the Tianjin Common Cancer Case Cohort (TJ4C), males who were not diagnosed with any cancers at baseline since 2017 and received both tPSA and fPSA testes were selected. Based on Cox regression, the overall and age-specific (<60, 60-<70, and ≥70 years) accuracy and optimal cut-off values of tPSA and fPSA/tPSA ratio for screening prostate cancer were evaluated with time-dependent receiver operating characteristic curve (tdROC) and area under curve (AUC). Bootstrap resampling was used to internally validate the stability of the optimal cut-off value, and the PLCO study was used to externally validate the accuracy under different cut-off values. Results: A total of 5 180 participants were included in the study, and after a median follow-up of 1.48 years, a total of 332 prostate cancer patients were included. In the total population, the tdAUC of tPSA and fPSA/tPSA screening for prostate cancer were 0.852 and 0.748, respectively, with the optimal cut-off values of 5.08 ng/ml and 0.173, respectively. After age stratification, the age specific cut-off values of tPSA in the <60, 60-<70, and ≥70 age groups were 3.13, 4.82, and 11.54 ng/ml, respectively, while the age-specific cut-off values of fPSA/tPSA were 0.153, 0.135, and 0.130, respectively. Under the age-specific cut-off values, the sensitivities of tPSA screening for prostate cancer in males <60, 60-70, and ≥70 years old were 92.3%, 82.0%, and 77.6%, respectively, while the specificities were 84.7%, 81.3%, and 75.4%, respectively. The age-specific sensitivities of fPSA/tPSA for screening prostate cancer were 74.4%, 53.3%, and 55.9%, respectively, while the specificities were 83.8%, 83.7%, and 83.7%, respectively. Both bootstrap's internal validation and PLCO external validation provided similar results. The combination of tPSA and fPSA/tPSA could further improve the accuracy of screening. Conclusion: To improve the screening effects, it is recommended that age-specific cut-off values of tPSA and fPSA/tPSA should be used to screen for prostate cancer in the general risk population.
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Affiliation(s)
- X M Liu
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - H Y Duan
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - D Q Zhang
- Department of Hospital Information System, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - C Chen
- Department of Clinical Laboratory, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y T Ji
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y M Zhang
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Z W Feng
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y Liu
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - J J Li
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y Zhang
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - C Y Li
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y C Zhang
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - L Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Office for Cancer Prevention and Control, Peking University Cancer Hospital & Institute, Beijing 100143, China
| | - Z Y Lyu
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - F F Song
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - F J Song
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Y B Huang
- Department of Cancer Epidemiology and Biostatistics, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
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Hu HS, Mao JY, Wang X, Liang YZ, Jiang B, Zhang DQ. Plastid phylogenomics and species discrimination in the "Chinese" clade of Roscoea (Zingiberaceae). Plant Divers 2023; 45:523-534. [PMID: 37936815 PMCID: PMC10625918 DOI: 10.1016/j.pld.2023.03.012] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/15/2023] [Accepted: 03/30/2023] [Indexed: 11/09/2023]
Abstract
Roscoea is an alpine or subalpine genus from the pan-tropical family Zingiberaceae, which consists of two disjunct groups in geography, namely the "Chinese" clade and the "Himalayan" clade. Despite extensive research on the genus, Roscoea species remain poorly defined and relationships between these species are not well resolved. In this study, we used plastid genomes of nine species and one variety to resolve phylogenetic relationships within the "Chinese" clade of Roscoea and as DNA super barcodes for species discrimination. We found that Roscoea plastid genomes ranged in length from 163,063 to 163,796 bp, and encoded 113 genes, including 79 protein-coding genes, 30 tRNA genes, four rRNA genes. In addition, expansion and contraction of the IR regions showed obvious infraspecific conservatism and interspecific differentiation. Plastid phylogenomics revealed that species belonging to the "Chinese" clade of Roscoea can be divided into four distinct subclades. Furthermore, our analysis supported the independence of R. cautleoides var. pubescens, the recovery of Roscoea pubescens Z.Y. Zhu, and a close relationship between R. humeana and R. cautloides. When we used the plastid genome as a super barcode, we found that it possessed strong discriminatory power (90%) with high support values. Intergenic regions provided similar resolution, which was much better than that of protein-coding regions, hypervariable regions, and DNA universal barcodes. However, plastid genomes could not completely resolve Roscoea phylogeny or definitively discriminate species. These limitations are likely related to the complex history of Roscoea speciation, poorly defined species within the genus, and the maternal inheritance of plastid genomes.
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Affiliation(s)
- Hai-Su Hu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
| | - Jiu-Yang Mao
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
| | - Xue Wang
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
| | - Yu-Ze Liang
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
| | - Bei Jiang
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
- Yunnan Key Laboratory of Screening and Research on Anti-pathogenic Plant Resources from Western Yunnan (Cultivation), Dali 671000, Yunnan, China
| | - De-Quan Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
- College of Pharmacy, Dali University, Dali 671000, Yunnan, China
- Yunnan Key Laboratory of Screening and Research on Anti-pathogenic Plant Resources from Western Yunnan (Cultivation), Dali 671000, Yunnan, China
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Shan YH, Zhou YS, Chen Q, Zhang DQ, Zhou J, Guo CB. [A historical review of dental schools founded by dentist Situ Bo in modern time]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:451-456. [PMID: 37082849 DOI: 10.3760/cma.j.cn112144-20221209-00611] [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: 04/22/2023]
Abstract
About 8 dental schools were founded by Chinese dentists during modern times (1909-1949) in China. Only one still worked after the founding of the People's Republic of China, which was one of the three dental schools founded by dentist Situ Bo. There were no systematic researches on Situ Bo's participation in dentistry education. This paper analyzes the founder's experience in dentistry and in the two schools he founded at the beginning, focusing on the background and process of the schools' construction, management, teaching, teachers and students training, etc. The results show that the establishment of the first two dental schools have laid important foundation for the establishment and development of Shanghai Dental College by the reserve of trained professional teachers and accumulated valuable experience in running schools. The systematic review of this history will help us better understand the establishment and development of Shanghai Dental College and the efforts in dentistry education made by dentists growed up in modern China, as well as the early development process of stomatology.
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Affiliation(s)
- Y H Shan
- Office of Research, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y S Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q Chen
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - D Q Zhang
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - J Zhou
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - C B Guo
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Shan YH, Chen Q, Jing Q, Zhang DQ, Zhou YS. [Formation of professor Mao Xiejun's thoughts on stomatological education]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:174-179. [PMID: 36746451 DOI: 10.3760/cma.j.cn112144-20221027-00559] [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: 02/08/2023]
Abstract
Professor Mao Xiejun wrote a report about dental education of China in 1935. From 1948 to 1950, he published three articles containing the educational idea of "developing dentistry into stomatology". When he served as the director of the Faculty of Dentistry of Peking University Medical School in July 1950, he proposed to rename the Faculty of Dentistry into the Faculty of Stomatology,which were approved by the Ministry of Health and the Ministry of Education of the People's Republic of China in one month. The Chinese Medical Association established the Society of Stomatology the next year. Later, dentistry was successively changed into stomatology, and medical content was integrated into dental education, which was of great significance and far-reaching influence. During the developments of the thought of stomatological education in China, Professor Mao Xiejun evidently played a pivotal role. In this paper, the formation process of the thoughts of stomatological education related to professor Mao Xiejun's contribution is elucidated through studying the archives, personal letters, and historical documents, so as to enrich the researches on the history of stomatology in China and to facilitate better understanding and promoting the development of stomatology.
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Affiliation(s)
- Y H Shan
- Office of Research, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q Chen
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - Q Jing
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - D Q Zhang
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - Y S Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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5
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Shan YH, Chen Q, Zhang DQ, Guo C. [A historical review of dental schools founded by dentists in modern China]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:1163-1168. [PMID: 36379896 DOI: 10.3760/cma.j.cn112144-20220701-00361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Eight dental schools were founded by Chinese dentists during modern times (1909-1949) in China, but only one of them still works. This article analyzes the establishment processes, faculty and student trainings in some of these dental schools, combining with the social background and management system at that time, to explore the difficulties encountered by Chinese dentists in founding dental schools before 1949.
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Affiliation(s)
- Y H Shan
- Office of Research, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q Chen
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - D Q Zhang
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - Chuanbin Guo
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Qi-Jie Zhu, Lang LJ, Wang Y, Zhang DQ, Jiang B, Xiao CJ. Triterpenoids from the Fruits of Wild Species of Crataegus scabrifolia and Their Lipid-Lowering Activities. Russ J Bioorg Chem 2022. [DOI: 10.1134/s1068162022060292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Zhang DQ, Zhao SP. [The general trend of combined use of lipid-lowering drugs]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:537-542. [PMID: 35705461 DOI: 10.3760/cma.j.cn112148-20220302-00141] [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: 06/15/2023]
Affiliation(s)
- D Q Zhang
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - S P Zhao
- Department of Cardiovascular Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, China
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Abstract
Gentiana is an important but complicated group in Gentianaceae. The genus covers numerous medicinal plants which are difficult to be identified. In the present study, several medicinal species in Gentiana from Yunnan province, including G. rigescens, G.rhodantha, and G. delavayi, were sequenced using the Illumina HiSeq 2500 system. Three complete chloroplast genome sequences were obtained after assembly and annotation. According to several published genome sequences of G. crassicaulis, the DNA super-barcoding of species in Gentiana was preliminarily carried out. The results revealed that chloroplast genomes of the three species were conservative with short lengths(146 944, 148 992, and 148 796 bp, respectively). The genomes encoded 114 genes, including 78 protein-coding genes, 30 tRNA genes, 4 rRNA genes, and 2 pseudogenes. Furthermore, these medicinal species in Yunnan province were identified using DNA super-barcoding based on chloroplast genomes. The results showed that the Gentiana species could be gathered into monophyletic branches with a high support value(100%). It indicated that DNA super-barcoding possessed obvious advantages in discriminating species in complicated genera. This study is expected to provide a scientific basis for the identification, utilization, and conservation of Gentiana species.
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Affiliation(s)
- Hai-Su Hu
- College of Pharmacy, Dali University Dali 671000, China
| | - De-Quan Zhang
- College of Pharmacy, Dali University Dali 671000, China Institute of Materia Medica, Dali University Dali 671000, China
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Shan YH, Chen Q, Zhang DQ. [A historical review of dental education and practice qualification in modern China]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:687-692. [PMID: 34275225 DOI: 10.3760/cma.j.cn112144-20201126-00590] [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
A series of regulations and policies for Dental Practitioner Qualification were issued during modern times (1906-1949) in China from local to national levels, in which the certification for qualification had been largely based on dental education and training experiences. The present article reviews the evolution and progression of dental practitioner qualification management, as well as its relationship to dental education before 1949, which may hopefully provide a historical background for the development of modern dentistry and enhance the understanding of the current management process for dental practitioner qualifications in China.
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Affiliation(s)
- Y H Shan
- Office of Research, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q Chen
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
| | - D Q Zhang
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
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Lin SL, Lin MH, Wang XM, Chen XM, Ye HH, Ma HX, Zhang DQ, Wu WJ, Lin JH, Liao ZY, Zheng RD, Gao HB. [Energy metabolism characteristic with risk of secondary bacterial infection in patients with hepatitis B virus-related chronic liver disease]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:558-564. [PMID: 34225431 DOI: 10.3760/cma.j.cn501113-20210130-00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate and analyze the energy metabolism characteristics and the correlation between energy metabolism and the risk of secondary bacterial infection in patients with hepatitis B virus-related chronic liver disease (HBV-CLD). Methods: Data of 183 cases admitted to the Mengchao Hepatobiliary Hospital of Fujian Medical University from November 2017 to November 2020 were retrospectively analyzed. 79 cases of chronic hepatitis B, 51 cases of hepatitis B-related liver cirrhosis, and 53 cases of hepatitis B-related liver failure were collected. Among them patients with liver failure and decompensated liver cirrhosis were defined as severe liver disease group. The Quark RMR indirect calorimetry (COSMED Corporation, Italy) was used to exam the patients' energy metabolism condition, and the incidences of secondary bacterial infection of the patients during hospitalization were recorded. Shapiro-Wilk test and normal QQ plot were used to analyze the normal distribution of continuous variable data, which was consistent with the normal distribution and was described by mean ± standard deviation. In addition, if it did not conform to the normal distribution, the median and interquartile distance were used to describe it. Levene's test was used to test the homogeneity of variance of the data, which was consistent with the normal distribution. The t-test was used to compare the means of the two groups of samples. One-way analysis of variance was used to compare the mean values of the three groups of samples, and then the Tukey's test was used to compare the two groups. If the variance was uneven or did not conform to the normal distribution, the Wilcoxon rank sum test was used to compare the differences between the two groups. Kruskal-Wallis test (H test) was used to compare the differences between the three groups of samples, and then the Dunnett's test (Z test) was used for comparison between the two groups. Categorical variable data were analyzed using chi-square test. Logistic regression analysis was used to screen independent risk factors, and the criteria for variable inclusion (P < 0.05). Results: The respiratory entropy (RQ) and non-protein respiratory entropy (npRQ) of the three groups had statistically significant difference (P < 0.05). Among them, the RQ and npRQ of the chronic hepatitis B group were higher than hepatitis B-related liver cirrhosis group and hepatitis B-related liver failure group. There were statistically significant differences in fat oxidation rate (FAT%) and carbohydrate oxidation rate (CHO%) between the three groups (P < 0.05). Compared with hepatitis B-related liver cirrhosis group and hepatitis B-related liver failure group, chronic hepatitis B group (P < 0.05) had lower FAT% and higher CHO%. There were no statistically significant differences in the measured and predicted resting energy expenditure and protein oxidation rate (PRO%) between the three groups. The incidence of secondary bacterial infection in patients with severe liver disease was 48.39% (45/93). Compared with the non-infected group, the RQ and npRQ values of the infected group were significantly decreased (P < 0.05), while FAT% was significantly increased (P < 0.05). Logistic regression analysis showed that glutamyltransferase, cholesterol, and npRQ were independent risk factors for secondary bacterial infections in patients with severe liver disease. Glutamyltransferase elevation, and cholesterol and npRQ depletion had suggested an increased risk of secondary bacterial infection. Subgroup analysis of patients with hepatitis B-related liver failure also showed that compared with non-infected group, RQ value and npRQ value of secondary bacterial infection group were significantly decreased (P < 0.05), while FAT% was significantly increased (P < 0.05). Conclusion: Patients with hepatitis B virus-related chronic liver disease generally have abnormal energy metabolism. Low RQ, npRQ, CHO% and high FAT% are related to the severity of the disease; while npRQ reduction is related to the risk of secondary bacterial infection in patients with severe liver disease, and thus can be used as a clinical prognostic indicator.
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Affiliation(s)
- S L Lin
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - M H Lin
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - X M Wang
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - X M Chen
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - H H Ye
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - H X Ma
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - D Q Zhang
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - W J Wu
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - J H Lin
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - Z Y Liao
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - R D Zheng
- Department of Hepatology, Zhengxing Hosptial, Zhangzhou 363000, China
| | - H B Gao
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
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Zhao JJ, Huang Y, Zhang DQ, Zhou N. [Phylogeography of Paris poliphylla var. yunnanensis based on chloroplast gene trnL-trnF sequences]. Zhongguo Zhong Yao Za Zhi 2021; 46:1094-1101. [PMID: 33787102 DOI: 10.19540/j.cnki.cjcmm.20201011.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Phylogeography is a research hotspot in the field of the genetic diversity and core germplasm construction of endangered rare plants. Paris polyphylla var. yunnanensis is a rare plant species mainly distributed in China. Wild individuals have been overexploited for the last few decades because of increasing demand for such medicines. Therefore, it is great significance to study the phylogeography of P. poliphylla var. yunnanensis based on chloroplast gene trnL-trnF sequences. In this study, chloroplast genes trnL-trnF were used in the phylogeography analysis of 15 wild and 17 cultivated populations of P. polyphylla var. yunnanensis. This study revealed that based on the results of neutrality tests and mismatch analysis, the rapid expansion of wild population has not been detected in P. polyphylla var. yunnanensis. After aligning and sorting the obtained cpDNA sequences, a total of 15 haplotypes were detected in all 32 populations. One haplotype was unique to the wild population, and 5 haplotypes were unique to the cultivated population. It can be seen that the haplotype richness of cultivated population was higher than that of wild population. The wild populations of P. polyphylla var. yunnanensis were divided into two groups according to evolutionary relationship of haplotypes and distribution map of haplotypes. The haplotype of branch Ⅰ was mainly distributed in Guizhou, and the haplotype of branch Ⅱ was located in Yunnan and Huidong, Sichuan. Therefore, it's speculated that Guizhou and the west Yunnan region may be glacial refuge in the evolutionary history of wild populations of P. polyphylla var. yunnanensis, and in order to protect the wild resources more effectively, wild populations of P. polyphylla var. yunnanensis in these two areas should be included in the protection zone.
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Affiliation(s)
- Jing-Jing Zhao
- the Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs,College of Food and Biological Engineering,Chongqing Three Gorges University Chongqing 404120,China
| | - Yu Huang
- College of Pharmacy and Chemistry,Dali University Dali 671000,China
| | - De-Quan Zhang
- College of Pharmacy and Chemistry,Dali University Dali 671000,China
| | - Nong Zhou
- the Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs,College of Food and Biological Engineering,Chongqing Three Gorges University Chongqing 404120,China
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Liu XH, Zhang CM, Pan PQ, Zhang DQ, Huang X, Ji ZH. Long noncoding RNA KCNQ1OT1 contributes to the development of nephroblastoma via modulating miR-21/PTEN axis. J BIOL REG HOMEOS AG 2021; 34:1901-1908. [PMID: 33155453 DOI: 10.23812/20-376-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- X H Liu
- Blood Purification Center, Weifang People's Hospital, Weifang, China
| | - C M Zhang
- Laboratory Pathology Department, Army Hospital of the 80th Army Group, Weifang, China
| | - P Q Pan
- Department of Nephrology, Qingdao Central Hospital, Qingdao University, Qingdao, China
| | - D Q Zhang
- Public Health Department, The People's Hospital of Zhangqiu Area, Jinan, China
| | - X Huang
- Department of Infectious Diseases, The People's Hospital of Zhangqiu Area, Jinan, China
| | - Z H Ji
- Outpatient Department, Qingdao Hospital of Traditional Chinese Medicine, Qingdao Hiser Medical Group, Qingdao, China
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Shan YH, Zhang DQ. [Analysis on features and functions of professional journals of stomatology published in modern China]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:178-184. [PMID: 32193914 DOI: 10.3760/cma.j.issn.1002-0098.2020.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The professional journals of stomatology, which were dedicated to spread of theoretical knowledge and medical practices, has demonstrated their important value for studying the development of stomatology. The historical details of these stomatological journals published in modern China from 1840 to 1949, such as publication background, chief founders, aims, main features and the contents of articles, are of great importance for investigating not only the humanistic features, but also the development of stomatology in China. Twenty-three professional journals of stomatology in modern China and 2 260 articles published in them have been verified through text analysis and archives. The features and functions of these journals were further analyzed in order to enrich the humanities and historical research of modern Chinese stomatology.
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Affiliation(s)
- Y H Shan
- Department of Medical History and Philosophy, School of Health Humanities, Peking University, Beijing 100191, China
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Zhang DQ, Zhang WL, Liang YN. Adsorption of perfluoroalkyl and polyfluoroalkyl substances (PFASs) from aqueous solution - A review. Sci Total Environ 2019; 694:133606. [PMID: 31401505 DOI: 10.1016/j.scitotenv.2019.133606] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/20/2019] [Accepted: 07/25/2019] [Indexed: 04/14/2023]
Abstract
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have gained increasingly global attention in recent years. Due to their unique amphiphilic properties and stability, PFASs are recognized as highly persistent, toxic, and environmentally bioaccumulative. Among several physicochemical technologies, adsorption has been extensively used and proved to be an effective method for removing PFASs from aqueous environment. In this review article, the technical feasibility of the use of different adsorbents, such as activated carbon, ion exchange resins, minerals, molecularly imprinted polymer (MIP), carbon nanotubes (CNTs), and a wide range of potentially low-cost biosorbents, for PFASs removal from water or wastewater is critically reviewed. The evaluation and comparison of their PFASs sorption behavior in terms of kinetics and isotherms is presented. The mechanisms involved in PFASs adsorption processes, such as diffusion, electrostatic interaction, hydrophobic interaction, ion exchange and hydrogen bond, are discussed. The effects of the parameters variability on sorption process are highlighted. Based on the literature reviewed, a few recommendations for future research on PFASs adsorption are also elaborated. Capsule: The adsorption behavior and mechanisms of perfluoroalkyl and polyfluoroalkyl substances (PFASs) on various adsorbents are reviewed.
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Affiliation(s)
- D Q Zhang
- College of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - W L Zhang
- Department of Environmental and Sustainable Engineering, College of Engineering and Applied Sciences, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY 12222, United States of America
| | - Y N Liang
- Department of Environmental and Sustainable Engineering, College of Engineering and Applied Sciences, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY 12222, United States of America.
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Xu HY, Lai QQ, Su SS, Zhou LP, Ye JR, Zhang DQ, Xie YP, Li YP. [Plasma relative abundance of epidermal growth factor receptor mutations predicts clinical response to epidermal growth factor receptor-tyrosine kinase inhibitors in patients with advanced lung adenocarcinoma]. Zhonghua Nei Ke Za Zhi 2019; 58:49-55. [PMID: 30605951 DOI: 10.3760/cma.j.issn.0578-1426.2019.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To determine whether relative abundance of epidermal growth factor receptor (EGFR) mutations in plasma predicts clinical response to epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) in patients with advanced lung adenocarcinoma. Methods: In this prospective study, adult patients with advanced lung adenocarcinoma were enrolled in our hospital from 1 April 2016 to 1 January 2017. EGFR mutations in tumor tissues were detected by ADx-amplification refractory mutation system (ADx-ARMS). EGFR mutations of plasma free tumor DNA were detected by ADx-ARMS and ADx-super amplification refractory mutation system (ADx-SuperARMS) at the same time. Patients with EGFR-mutant in tumor tissues and receiving EGFR-TKIs were finally enrolled. Plasma mutation-positive patients with both methods were high abundance group.Patients with positive mutations by ADx-SuperARMS but negative by ADx-ARMS were medium abundance group. Mutation-negative patients with both methods were recognized as low abundance group. The correlation between EGFR mutation abundance and clinical response to EGFR-TKIs were analyzed. Results: Among 71 patients enrolled, 42 harbored EGFR mutations in plasma were detected by ADx-ARMS, while 53 were found by ADx-SuperARMS.There were 42 patients in high abundance group, 11 in medium group while the other 18 in low group. The objective response rates (ORRs) were 69.0%, 7/11 and 10/18 in high, medium and low groups, respectively. The difference was significant between high and low abundances groups (P=0.006). Median progression-free survival (PFS) in high, medium and low groups were 11.0, 8.5 and 9.0 monthes, respectively (P<0.001). In patients with tumor 19-Del, the ORRs were 70.4%, 5/7 and 6/11 in high, medium and low abundance groups, respectively. The median PFS of high abundance group was significantly longer than the other two groups (12.0 monthes vs 9.0, 9.0 monthes). As to subjects with L858R mutation, the ORRs were 10/15, 2/4 and 3/6, respectively, with median PFS 9.6, 5.5 and 9.5 monthes. Conclusions: The relative abundance of EGFR mutations in plasma predicts clinical response to EGFR-TKIs in patients with advanced lung adenocarcinoma. The higher the mutation abundance is, the better the efficacy of EGFR-TKIs is.
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Affiliation(s)
- H Y Xu
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Li MY, Zhang DQ, Lu X, Chen WC. [Comparison of two serological methods in screening gastric cancer and its precancerous condition]. Zhonghua Nei Ke Za Zhi 2019; 57:907-911. [PMID: 30486559 DOI: 10.3760/cma.j.issn.0578-1426.2018.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the diagnostic value of the old "ABC" method [serum pepsinogen(PG) combined with Helicobacter pylori (Hp) IgG antibody] and the new "ABC" method [serum pepsinogen plus gastrin-17(G-17)] in screening gastric cancer and its precancerous condition. Methods: Serum PG, G-17 and Hp-IgG were quantified by enzyme-linked immunosorbent assay (ELISA) in 278 subjects. Subjects were grouped according to the criteria of two methods. The gastroscopy and pathological biopsy were gold standard. Results: The positive rate of old "ABC" method was 74.46% (207/278), which was 54.68% of new "ABC" method (151/278). For the diagnosis of gastric cancer, the sensitivity and specificity of the old "ABC" method were 90.74% and 29.46% respectively, with diagnostic coincidence rate 41.37%. The sensitivity and specificity of the new "ABC" method were 92.59% and 54.46% respectively, with diagnostic coincidence rate 61.87%. As to the diagnosis of pre-cancerous state, the sensitivity and specificity of the old "ABC" method were 75.81% and 36.00%, with diagnostic coincidence rate 58.03%. The sensitivity and specificity of the new "ABC" method were 62.10% and 75.00%, with diagnostic coincidence rate 67.86%. Conclusions: Compared with the old "ABC" method, the new "ABC" method has higher sensitivity, specificity and diagnostic coincidence rate for the diagnosis of gastric cancer, yet higher specificity and lower sensitivity for the diagnosis of precancerous conditions.
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Affiliation(s)
- M Y Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Xu HY, Zhang DQ, Ye JR, Su SS, Xie YP, Chen CS, Li YP. [Diagnostic performance of T-SPOT.TB on peripheral blood in combination with adenosine deaminase on pleural fluid for the diagnosis of tuberculous pleurisy within different age group]. Zhonghua Yi Xue Za Zhi 2018. [PMID: 28648009 DOI: 10.3760/cma.j.issn.0376-2491.2017.24.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the performance of T cell enzyme-linked immuno-spot assay (T-SPOT) on peripheral blood in combination with adenosine deaminase (ADA) on pleural fluid for diagnosis of tuberculous (TB) pleurisy within different age groups. Methods: The data of patients with pleural effusion from the Department of Pulmonary and Critical Care Medicine of the First Affiliated Hospital of Wenzhou Medical University from April 2012 to November 2016 were retrospectively analyzed, and the diagnoses of these patients were histopathologically confirmed through medical thoracoscopy. The cases who had confirmed diagnosis, in the same time, received peripheral blood T-SPOT.TB were enrolled. The performance of peripheral blood T-SPOT.TB in combination with pleural fluid ADA on diagnosing TB pleurisy in the younger patients (16-59 years old) and elderly patients (≥60 years old) were analyzed respectively. The sensitivity, specificity and the receiver operating characteristic (ROC) curve were adopted for statistical analysis. Results: A total of 448 cases were finally enrolled, 341(76.1%) confirmed with TB pleurisy, 224 males, 117 females, (47±19) years old; and 107 (23.9%) classified as non-TB pleurisy, 65 males, 42 females, (61±14) years old. There were 285 cases who were classified as younger group, and the other 163 cases were classified as elderly group. The sensitivity and specificity of peripheral blood T-SPOT.TB were 85.4% (204/239) and 71.7% (33/46) in the younger patients, 76.5% (78/102) and 59.0% (36/61) respectively in the elderly patients. The sensitivity of peripheral blood T-SPOT.TB in the younger patients was significantly higher than that in the elderly patients (P=0.047). The sensitivity and specificity were 99.2% and 95.7% in combination with peripheral blood T-SPOT.TB and pleural fluid ADA respectively in the younger patients. The area under ROC curve (AUC) of T-SPOT.TB in the younger patients was 0.833, AUC of T-SPOT.TB combined with ADA was 0.911. The combination test of 2 tests had the sensitivity of 96.1% and the specificity of 90.2% respectively in the elderly patients. The AUC of T-SPOT.TB in the elderly patients was 0.747, AUC of T-SPOT.TB combined with ADA was 0.911. Conclusion: Peripheral blood T-SPOT.TB combined with pleural fluid ADA can improve the diagnostic performance for TB pleurisy with different ages, especially for elderly patients who can't tolerate pleural biopsy.
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Affiliation(s)
- H Y Xu
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Cui PC, Zhang DQ, Guo ZH, Liang LP. [Management of laryngeal stenosis after laryngeal cancer surgery]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:917-919. [PMID: 29921073 DOI: 10.13201/j.issn.1001-1781.2018.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the surgical methods and outcomes of laryngeal stenosis after laryngeal cancer surgery. Method:Nineteen patients with laryngeal stenosis caused by partial laryngectomy were retrospectively analyzed.Two cases were treated by endoscopic laser resection. Seventeen were treated by open surgery. Among them 15 used the sternohyoid myocutaneous flap and 1 thyroid alar cartilage and 1 hyoid bone as grafts. Result:Sixteen patients were decannulated and the overall decannulation rate was 84%. A silicone T tube was remained in place from 3 to 18 months, mean 10 months. Follow-up was obtained from 11 months to 8 years. Conclusion:Vertical partial laryngectomy easily lead to laryngeal stenosis. The sternohyoid myocutaneous flap is the major approach for laryngeal stenosis. Endoscopic laser resection is effective for mild stenosis.
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Affiliation(s)
- P C Cui
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hosptial, Air Force Medical University, Xi'an, 710038, China
| | - D Q Zhang
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hosptial, Air Force Medical University, Xi'an, 710038, China
| | - Z H Guo
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hosptial, Air Force Medical University, Xi'an, 710038, China
| | - L P Liang
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hosptial, Air Force Medical University, Xi'an, 710038, China
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Zhao N, Zhang DQ, Zhang LJ, Yang LN, Li LM, Qi Y, Wang J, Yang L. [Clinical significance of serum resistin in patients with generalized myasthenia gravis]. Zhonghua Yi Xue Za Zhi 2017; 97:2087-2090. [PMID: 28763880 DOI: 10.3760/cma.j.issn.0376-2491.2017.27.002] [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: 06/07/2023]
Abstract
Objective: To detect the serum resistin levels in patients with generalized myasthenia gravis (GMG) and evaluate the clinical values of resistin. Methods: We detected the serum resistin levels in 58 patients with GMG and 58 healthy controls (HC) from January 2013 to December 2015 in Tianjin medical university general hospital.Then we analyzed the correlation of the serum resistin levels with the clinical features. Results: The serum resistin levels in patients with GMG, (8.26±4.27) ng/ml, was significantly higher than in HC, (4.12±1.36) ng/ml, (P<0.001). There was no statistical difference of the serum resistin levels between female or male patients with GMG (P=0.589). The serum resistin levels in patients with GMG was positively correlated with the quantitative MG score for disease severity (QMG) (r=0.446, P<0.001), but not correlated with age (r=0.168, P=0.206). The patients with higher resistin levels took higher risk of combining with thymoma (P=0.002), 56.5%, and these patients had higher QMG, 11(5) (P=0.001); and the ratio and QMG in the patients with lower resistin levels were 17.1%, 7(5), respectively.The GMG patients with thymoma (TGMG+ ) had remarkably higher serum resistin levels, (10.7±5.3) ng/ml (P=0.010) and the QMG score, 11(5) (P<0.001) than the GMG patients without thymoma (TGMG-) with (7.0±3.1) ng/ml and 8(5). Conclusion: Resistin is probably associated with the severity of the disease of MG, and maybe a potential biomarker of MG combined with thymoma.
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Affiliation(s)
- N Zhao
- Department of Neurology and Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300020, China
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Li X, Jin Q, Wu YL, Sun P, Jiang S, Zhang Y, Zhang DQ, Zhang YJ, Lian LH, Nan JX. Tetrandrine regulates hepatic stellate cell activation via TAK1 and NF-κB signaling. Int Immunopharmacol 2016; 36:263-270. [DOI: 10.1016/j.intimp.2016.04.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 03/25/2016] [Accepted: 04/25/2016] [Indexed: 02/08/2023]
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Zhang DQ, Sun P, Jin Q, Li X, Zhang Y, Zhang YJ, Wu YL, Nan JX, Lian LH. Resveratrol Regulates Activated Hepatic Stellate Cells by Modulating NF-κB and the PI3K/Akt Signaling Pathway. J Food Sci 2015; 81:H240-5. [DOI: 10.1111/1750-3841.13157] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/18/2015] [Indexed: 02/01/2023]
Affiliation(s)
- De-Quan Zhang
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Peng Sun
- Dept. of Pharmacy; Yanbian Univ. Hospital; Yanji 133000 Jilin Province China
| | - Quan Jin
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Xia Li
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Yu Zhang
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Yu-Jing Zhang
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Yan-Ling Wu
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Ji-Xing Nan
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
| | - Li-Hua Lian
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy; Yanbian Univ; Yanji 133002 Jilin Province China
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Xia ZK, Ma QH, Li SY, Zhang DQ, Cong L, Tian YL, Yang RY. The antifungal effect of silver nanoparticles on Trichosporon asahii. J Microbiol Immunol Infect 2014; 49:182-8. [PMID: 24877597 DOI: 10.1016/j.jmii.2014.04.013] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 04/03/2014] [Accepted: 04/15/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND/PURPOSE Silver nanoparticles are receiving increasing attention in biomedical applications. This study aims at evaluating the antifungal properties of silver nanoparticles against the pathogenic fungus Trichosporon asahii. METHODS The growth of T. asahii on potato dextrose agar medium containing different concentrations of silver nanoparticles was examined and the antifungal effect was evaluated using minimum inhibitory concentration. Scanning and transmission electron microscopy were also used to investigate the antifungal effect of silver nanoparticles on T. asahii. RESULTS Silver nanoparticles had a significant inhibitory effect on the growth of T. asahii. The minimum inhibitory concentration of silver nanoparticles against T. asahii was 0.5 μg/mL, which was lower than amphotericin B, 5-flucytosine, caspofungin, terbinafine, fluconazole, and itraconazole and higher than voriconazole. Silver nanoparticles obviously damaged the cell wall, cell membrane, mitochondria, chromatin, and ribosome. CONCLUSION Our results demonstrate that silver nanoparticles have good antifungal activity against T. asahii. Based on our electron microscopy observations, silver nanoparticles may inhibit the growth of T. asahii by permeating the fungal cell and damaging the cell wall and cellular components.
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Affiliation(s)
- Zhi-Kuan Xia
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China; Third Military Medical University, Gaotanyanzhengjie, Shapingba District, Chongqing, PR China
| | - Qiu-Hua Ma
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Shu-Yi Li
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - De-Quan Zhang
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Lin Cong
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Yan-Li Tian
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Rong-Ya Yang
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China.
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Zhang DQ, Zhou N. Genetic diversity and population structure of the endangered conifer Taxus wallichiana var. mairei (Taxaceae) revealed by Simple Sequence Repeat (SSR) markers. BIOCHEM SYST ECOL 2013. [DOI: 10.1016/j.bse.2013.03.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zhou N, Zhang DQ, Sun Q, Jiang B, Huang ZC. [Effects of fungal elicitors on the secondary metabolite steroidal saponin in Paris polyphylla var. yunnanensis]. Yao Xue Xue Bao 2012; 47:1237-1242. [PMID: 23227557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To compare the effects of inoculated or non-inoculated with arbuscular mycorrhizal (AM) fungi on the steroidal saponin component in root of Paris polyphylla var. yunnanensis. By pot experiments, steroid saponin component in root of P. polyphylla var. yunnanensis was determined and compared by HPLC. The results showed there was difference in the effects of different AM fungal on the secondary metabolite steroid saponin in P. polyphylla var. yunnanensis. After elicitors treatment, AM fungal did not change the chemical backgrounds of P. polyphylla var. yunnanensis, but can improve partly the content of chemical compositions in roots. In conclusion, there was selectivity between AM fungal and P. polyphylla var. yunnanensis. Glomus intraradices was the most appropriate strain for inoculation P. polyphylla var. yunnanensis.
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Affiliation(s)
- Nong Zhou
- College of Life Science and Engineering, Chongqing Three Gorges University, Chongqing 404000, China
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Liu B, Wen JK, Li BH, Fang XM, Wang JJ, Zhang YP, Shi CJ, Zhang DQ, Han M. Erratum: Celecoxib and acetylbritannilactone interact synergistically to suppress breast cancer cell growth via COX-2-dependent and -independent mechanisms. Cell Death Dis 2011. [PMCID: PMC3186910 DOI: 10.1038/cddis.2011.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Liu B, Wen JK, Li BH, Fang XM, Wang JJ, Zhang YP, Shi CJ, Zhang DQ, Han M. Celecoxib and acetylbritannilactone interact synergistically to suppress breast cancer cell growth via COX-2-dependent and -independent mechanisms. Cell Death Dis 2011; 2:e185. [PMID: 21796157 PMCID: PMC3199716 DOI: 10.1038/cddis.2011.64] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The use of celecoxib is associated with a significant decrease in breast cancer risk. However, the long-term use of high-dose celecoxib might be limited owing to cardiovascular side effects. In this study, we found that acetylbritannilactone (ABL), extract from a Chinese medicinal herb, could reduce celecoxib dose and potentiate the growth-inhibitory effect in breast cancer cells. ABL enhanced the apoptotic effect of celecoxib in COX-2-expressing cells, but had little effect in COX-2-negative cells. The apoptosis induced by the combination treatment disappeared when COX-2 was knocked down, whereas the lack of apoptotic effects in COX-2-negative cells was reversed after COX-2 transfection. However, the combination treatment induced a G(0)/G(1) phase arrest independent of whether or not the cells expressed COX-2. The G(0)/G(1) arrest was attributed to a decreased expression of cyclinD1, cyclinE, CDK2 and CDK6, especially the upregulation of p21. In addition, inhibition of Akt and p38 signaling pathways was required by the synergism, as the constitutively active Akt and p38 protected cells against apoptosis and cell cycle arrest induced by the combination treatment. In vivo, administration of celecoxib and ABL were more effective than the individual agents against xenograft tumor growth. Thus, our data suggested that the combinatorial approach of celecoxib and ABL might be helpful for breast cancer treatment.
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Affiliation(s)
- B Liu
- Department of Biochemistry and Molecular Biology, Institute of Basic Medicine, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, PR China
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Liu J, Gao LM, Li DZ, Zhang DQ, Möller M. Cross-species amplification and development of new microsatellite loci for Taxus wallichiana (Taxaceae). Am J Bot 2011; 98:e70-3. [PMID: 21613149 DOI: 10.3732/ajb.1000445] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
PREMISE OF THE STUDY Previously published and newly developed microsatellite primers for Taxus species were screened for their potential transfer to Taxus wallichiana and to characterize the genetic diversity and population structure of this species. METHODS AND RESULTS Twenty microsatellite markers that successfully PCR amplified showed polymorphisms when tested on T. wallichiana. Ten of these were obtained by cross-species amplification. The remaining 10 markers were developed in the current study. These markers were characterized on 58 individuals from two T. wallichiana populations from China. Overall, the number of alleles per locus ranged from two to twelve. No significant linkage disequilibrium (LD) was detected between the comparisons of these loci. CONCLUSIONS The polymorphic microsatellite markers screened in this study will be useful for further investigations of the conservation genetics of the endangered species T. wallichiana.
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Affiliation(s)
- Jie Liu
- Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming Yunnan 650204, China
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Hu XD, Sun AD, Zhang DQ. Separation of anthocyanins from Perilla frutescens by high speed countercurrent chromatography. Zhong Yao Cai 2010; 33:1586-1588. [PMID: 21351722] [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: 05/30/2023]
Abstract
OBJECTIVE To develop an efficient method for the separation of anthocyanins from Perilla frutescens. METHODS Freeze-dried Perilla frutescens was extracted with 1% HCl. After purified by Amberlite XAD-7 column chromatography, the bioactive anthocyanins were separated by high-speed countercurrent chromatography (HSCCC). The structures of the compounds were elucidated by 1H- and 13C-NMR spectroscopy. RESULTS When the HSCCC separation was performed with a two-phase solvent system composed of n-butanol-tert-butyl methyl ether-acentonitrile-water (2:2:1:5 + 0.1% TFA) by eluting the mobile phase at a flow rate of 3.0 mL/min and a revolution speed of 800 r/min, 10.1 mg malonylshisonin and 8.6 mg shisonin were obtained from 1.0 g of the XAD-7 extract. The purities of malonylshisonin and shisonin were 96.7% and 97.5%, respectively. CONCLUSION HSCCC is a fast and efficient technique to prepare pure malonylshisonin and shisonin from Perilla frutescens.
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Affiliation(s)
- Xiao-Dan Hu
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China.
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Liu J, Möller M, Gao LM, Zhang DQ, Li DZ. DNA barcoding for the discrimination of Eurasian yews (Taxus L., Taxaceae) and the discovery of cryptic species. Mol Ecol Resour 2010; 11:89-100. [PMID: 21429104 DOI: 10.1111/j.1755-0998.2010.02907.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
There is currently international interest in the application of DNA barcoding as a tool for plant species discrimination and identification. In this study, we evaluated the utility of five candidate plant DNA barcoding regions [rbcL, matK, trnH-psbA, trnL-F and internal transcribed spacer (ITS)] in Eurasian yews. This group of species is taxonomically difficult because of a lack of clear-cut morphologically differences between species and hence represents a good test case for DNA barcoding. Forty-seven accessions were analysed, representing all taxa treated in current floristic works and covering most of the distribution range of Taxus in Eurasia. As single loci, trnL-F and ITS showed the highest species discriminatory power, each resolving 11 of 11 lineages (= barcode taxa). Species discrimination using matK, trnH-psbA and rbcL individually was lower, with matK resolving 8 of 10, trnH-psbA 7 of 11 and rbcL 5 of 11 successfully sequenced lineages. The proposed CBOL core barcode (rbcL + matK) resolved 8 of 11 lineages. Combining loci generally increased the robustness (measured by clade support) of the barcoding discrimination. Based on overall performance, trnL-F and ITS, separately or combined, are proposed as barcode for Eurasian Taxus. DNA barcoding discriminated recognized taxa of Eurasian Taxus, namely T. baccata, T. cuspidata, T. fuana and T. sumatrana, and identified seven lineages among the T. wallichiana group, some with distinct geographical distributions and morphologies, and potentially representing new species. Using the proposed DNA barcode, a technical system can be established to rapidly and reliably identify Taxus species in Eurasia for conservation protection and for monitoring illegal trade.
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Affiliation(s)
- Jie Liu
- Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
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Zhang DQ, Gao LM, Yang YP. Genetic diversity and structure of a traditional Chinese medicinal plant species, Fritillaria cirrhosa (Liliaceae) in southwest China and implications for its conservation. BIOCHEM SYST ECOL 2010. [DOI: 10.1016/j.bse.2009.12.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Zhang DQ, Chen XN, Sun SQ, Li CH, Zhang BL, Li Y, Li SR, Li QP, Zhou HJ. [The quantified analysis of fresh mutton tenderness using PLS methods and Fourier transform near-infrared spectroscopy]. Guang Pu Xue Yu Guang Pu Fen Xi 2008; 28:2550-2553. [PMID: 19271487] [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: 05/27/2023]
Abstract
Ninety eight representative fresh mutton samples from Neimeng, Ningxia, Gansu, Xinjiang province were selected for this study, the nondestructive measurement of the fresh mutton tenderness by Fourier transform near infrared (FT-NIR) spectroscopy was discussed. Partial least squares(PLS) algorithm was used to build the model between the shear force value of the fresh mutton tenderness measured by the texture machine and the FT-NIR spectra. The influence of different processing method of spectra, factors and wave regions on the determination coefficients (r2), root mean square error of cross validation (RMSECV) and root mean square error of prediction (RMSEP) was studied. The result showed that the shear force value of ninety eight representative fresh mutton samples was 1.673-6.631 kg, and the shear force value above 75% samples was 2-5 kg, almost covering the fresh mutton tenderness of our country's sheep, the r2 of the calibration could reach 86.2% and the RMSECV was up to 0. 445 in the wave number range 11 995-5 446 cm(-1) and 4 601-4 246 cm(-1) with vector normalization when the PLS factors was ten. The correlation coefficient(R), RMSEP and average bias between value measured by the texture machine and predicted value of model based on validation samples were 0.87, 0.524 and 0.385 respectively. The result indicates that FT-NIR spectroscopy is capable of predicting tenderness value of fresh mutton.
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Affiliation(s)
- De-Quan Zhang
- Institute of Agro-Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100094, China.
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32
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Liu SJ, Zhang ZH, Zhang DQ, Sui XM, Liu YJ, Cai ZW, Yuan XY, Sun LQ, Hu GF, Liu RL. Gene profiling after knocking-down expression of nucleostemin in Hela cells using oligonucleotide DNA microarray. J Exp Clin Cancer Res 2006; 25:575-83. [PMID: 17310849] [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: 05/14/2023]
Abstract
Nucleostemin (NS) is preferentially and exclusively expressed in the stem cells and cancer cells, but not in differentiated adult tissues and cells. NS is likely to take part in controlling the proliferation and differentiation switch in stem cells and progenitor cells. Its deregulation in cancer also contributes to the elevated proliferation and undifferentiation of cancer cells. However, the mechanisms by which NS helps to maintain both cancer and stem cells in undifferentiated state remain unclear. In this study, we carried out gene profilings using oligonucleotide DNA microarray after knocking down the expression of NS in Hela cells. Of the 21,329 genes, 200 genes were found differentially expressed in NS silenced Hela cells with > 2 fold ratio (either > 2 or < 0.5). Category analysis indicated these differential genes were mainly related with cancer pathogenesis, cell death, cell growth and proliferation. NS related gene pathway analysis suggested NS was mostly involved in the networks of cell cycle and differentiation controls. p53 may not be the only partner of NS in its regulated pathways. c-Myc may directly or indirectly interact with it to control the proliferation and differentiation switch in cancer cells. Our study provides a general view of the NS-target genes, and indicates the possible pathways in which NS plays its role in proliferation control.
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Affiliation(s)
- S J Liu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
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33
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Zhang DQ, McMahon DG. Gating of retinal horizontal cell hemi gap junction channels by voltage, Ca2+, and retinoic acid. Mol Vis 2001; 7:247-52. [PMID: 11715013] [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: 02/22/2023] Open
Abstract
PURPOSE Hemi gap junction (HGJ) channels, precursors of gap junctional channels, are functionally expressed in retinal horizontal cells where they may play roles in osmoeregulation and ephaptic regulation of synaptic feedback to photoreceptors. In this study we examined mechanisms of gating of these channels by transmembrane voltage, Ca2+ and retinoic acid (RA). METHODS Experiments were performed on cultured bass horizontal cells using the conventional whole cell patch clamp configuration. RESULTS HGJ currents in isolated bass horizontal cells, revealed by perfusion with Ca2+ free media, were opened by positive holding potentials and inhibited by negative holding potentials. These currents were also inhibited by external application of either Ca2+ or RA. Using a rapid perfusion system, the latency of 2 mM Ca2+ to begin channel closure was unmeasurably brief, whereas the latency for 30 microM RA action was 177+/-9 ms (mean+/-standard error of the mean). The total inhibition of HGJ channel currents by coapplication of 0.3 microM RA and 100 microM Ca2+ was less than the sum of inhibition by RA alone and Ca2+ alone suggesting that the actions of RA and Ca2+ were not independent. In the presence of 0.3 microM RA, the half maximal concentration for Ca2+ inhibition was increased from a control value of 192 microM to 375 microM without affecting maximal inhibition. Similarly, the half maximal concentration for RA inhibition was increased from a control value of 0.44 microM to 1.1 microM without affecting maximal inhibition in the presence of 100 microM Ca2+. CONCLUSIONS These results suggest that horizontal cell HGJ channels are closed by the normal negative resting potentials of these cells. Extracellular Ca2+ and the retinal neuromodulator RA also act to close HGJ channels through mechanisms or sites which are not independent.
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Affiliation(s)
- D Q Zhang
- Department of Physiology, University of Kentucky, Lexington, KY 40536-0084, USA
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34
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Zhang DQ. [In commemoration of the 140 anniversary of William Osler's birthday] (Chi). Zhonghua Yi Shi Za Zhi 2001; 19:54-60. [PMID: 11612481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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35
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Affiliation(s)
- D G McMahon
- Department of Physiology, University of Kentucky, Lexington, KY 40536-0084, USA.
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Abstract
Retinoic acid (RA), a signaling molecule derived from vitamin A, controls growth and differentiation of a variety of cell types through regulation of gene transcription. In the vertebrate retina, RA also regulates gap junction-mediated physiological coupling of retinal neurons through a nontranscriptional mechanism. Here we report that RA rapidly and specifically modulates synaptic transmission at electrical synapses of cultured retinal horizontal cells through an external RAR(beta)(/gamma)-like binding site, the action of which is independent of second messenger cascades. External application of all-trans retinoic acid (at-RA) reversibly reduced the amplitude of gap junctional conductance in a dose-dependent manner, but failed to affect non-gap-junctional channels, including glutamate receptors. In contrast, internal dialysis with at-RA was ineffective, indicating an external site of action. Selective RAR(beta)(/gamma) ligands, but not an RAR(alpha)-selective agonist, mimicked the action of at-RA, suggesting that gating of gap junctional channels is mediated through an RAR(beta)(/gamma)-like binding site. At-RA did not act on gap junctional conductance by lowering [pH](i) or by increasing [Ca(2+)](i). A G protein inhibitor and protein kinase inhibitors did not block at-RA uncoupling effects indicating no second messenger systems were involved. Direct action of at-RA on gap junction channels was further supported by its equivalent action on whole-cell hemi-gap-junctional currents and on cell-free excised patch hemichannel currents. At-RA significantly reduced single-channel open probability but did not change unitary conductance. Overall, the results indicate that RA modulates horizontal cell electrical synapses by activation of novel nonnuclear RAR(beta)(/gamma)-like sites either directly on, or intimately associated with, gap junction channels.
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Affiliation(s)
- D Q Zhang
- Department of Physiology, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
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Abstract
We analyzed the effects of glatiramer acetate (GA) therapy on in vitro proliferative responses and cytokine production by lymphocytes derived from multiple sclerosis patients receiving this therapy. We confirmed that lymphocytes derived from GA naïve patients show a high frequency of response when initially exposed to GA in vitro; this frequency decreased following GA therapy. The frequency of lymphocytes responding to whole MBP stimulation did not change with GA therapy. GA- and MBP-specific T cell lines generated from these patients by repeated cycles of in vitro stimulation did not cross react. Some (23%) whole MBP-reactive T cell lines did cross react with MBP peptide 83-99. The mean levels of interferon (IFN) gamma secretion and the mean ratio of IFN-gamma/IL-5 were lower for GA-reactive cell lines, derived from patients both prior to and during GA therapy, compared to MBP-reactive T cell lines. The proportion of IFN-gamma(+) cells in unfractionated lymphocyte preparations derived from the GA-treated patients did not differ from that found for healthy controls. Our findings indicate that GA-reactive T cell lines derived from GA-treated MS patients continue to show a relative Th2 cytokine bias consistent with a bystander suppressor function. GA treatment is not associated with a cytokine phenotype shift in the total T cell or MBP-reactive T cell populations.
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Affiliation(s)
- Y Qin
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Quebec, H3A 2B4, Montreal, Canada
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Li NL, Zhang DQ, Zhou KY, Cartman A, Leroux JY, Poole AR, Zhang YP. Isolation and characteristics of autoreactive T cells specific to aggrecan G1 domain from rheumatoid arthritis patients. Cell Res 2000; 10:39-49. [PMID: 10765982 DOI: 10.1038/sj.cr.7290034] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Our previous work showed that the cartilage proteoglycan aggrecan could induce an erosive polyarthritis and spondylitis in BALB/c mice and the G1 globular domain of the aggrecan (G1) contained the arthritogenic region. To elucidate whether autoreactive T cells to G1 are expressed in rheumatoid arthritis patients, we analyzed the frequency of human G1-specific T cells in the peripheral blood of five rheumatoid arthritis patients and tried to establish G1-reactive T cell lines from these rheumatoid arthritis patients. The results showed that the G1-specific T cells in PBL were detectable at the range of 4.97 +/- 0.5 x 10(-6) in peripheral blood lymphocytes. We have also generated 15 G1-specific T lymphocyte lines from these patients with a standard split-well method. All these cells expressed fine specificity to human recombinant G1, but not to unrelated antigen. All the 15 lines expressed a pan-T cell marker and 13 of them selectively used the alphabeta T cell receptor. Two of them used gammadelta T cell receptor. The 13 of these T cell lines was CD4 positive. One line expressed CD8. One line expressed both CD4 and CD8. Moreover, 14 out of 15 lines expressed the Th-1 cytokine profile, characterized by interferon-gamma positivity and IL-4 negativity. No Th-2 type cell line was generated. These data provide strong evidence in favor of the presence of autoreactive T cells in the rheumatoid arthritis patients. What is the mechanism(s) that these autoreactive T cells attack self-target and whether these G1-specific, Th-1 type T cell lines can induce arthritis in immune deficiency mice are currently under investigation.
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Affiliation(s)
- N L Li
- Shanghai Institute of Immunology, Shanghai Second Medical University, China
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39
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Abstract
Electrical coupling between H2 horizontal cell pairs isolated from the hybrid bass retina was studied using dual whole-cell, voltage-clamp technique. Voltage-dependent inactivation of junctional currents in response to steps in transjunctional voltage (Vj) over a range of +/-100 mV was characterized for 89 cell pairs. Approximately one-quarter of the pairs exhibited strongly voltage-dependent junctions (>50% reduction in junctional current at +/-100 mV), another quarter of the pairs exhibited voltage-independent junctional current (<5% reduction at +/-100 mV), and the remainder of the pairs exhibited intermediate values for voltage inactivation. We focused on further characterizing the Vj-independent junctions of horizontal cells, which have not been described previously in detail. When Lucifer Yellow dye was included in one recording pipette, pairs exhibiting Vj-independent coupling showed no (9/12), or limited (3/12), passage of dye. Vj-independent coupling was markedly less sensitive to the modulators SNP (100-300 microM, -9% reduction in coupling) and dopamine (100-300 microM, -6%) than were Vj-dependent junctions (-45% and -44%). However, simultaneous application of both SNP and dopamine significantly reduced Vj-independent coupling (-56%). Both Vj-independent and Vj-dependent junctions were blocked by DMSO (1-2%), but Vj-independent junctions were not blocked by heptanol. Single-channel junctional conductances of Vj-independent junctions range from 112-180 pS, versus 50-60 pS for Vj-dependent junctions. The results reveal that Vj-independent coupling in a subpopulation of horizontal cells from the hybrid bass retina is mediated by cellular junctions with physiological and pharmacological characteristics distinct from those previously described in fish horizontal cells.
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Affiliation(s)
- C Lu
- Department of Physiology, University of Kentucky, Lexington 40536-0084, USA
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Abstract
In the present work, the effects of gamma-aminobutyric acid (GABA) were examined while recording intracellularly from color-opponent bipolar cells in the isolated, superfused carp retina. Bath-applied GABA differentially suppressed light responses of R/G cells, which depolarized and hyperpolarized, respectively, in response to red and green flashes, and G/R cells, which showed the opposite responses. In either R/G or G/R cells, the response driven by input from red cones was invariably suppressed to a greater extent. Such effects of GABA were completely blocked by picrotoxin, but only partially by bicuculline, suggesting that the GABAC receptor, in addition to the GABAA receptor, may also be involved. It is postulated that GABA modulates the color-opponent bipolar cells either through activating GABA receptors on these cells directly or those on cone terminals indirectly.
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Affiliation(s)
- D Q Zhang
- Shanghai Institute of Physiology, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
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41
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Zhang DQ, Yang XL. [The selective suppression of GABA on cone-driven horizontal cells in carp retina]. Sheng Li Xue Bao 1997; 49:639-43. [PMID: 9863185] [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: 02/09/2023]
Abstract
Intracellular recordings were made from horizontal cells in the superfused, isolated carp retina and effects of GABA on rod- and cone-driven horizontal cells were studied. Bath-applied GABA (0.5-5 mmol/L) resulted in a hyperpolarization of dark membrane potential and a suppression of light responses of L-type cone horizontal cells. In 7 out of 10 cells tested the effects of GABA were completely blocked by bicuculline, an antagonist of GABAA receptors. In the presence of 0.5 mmol/L Co2+, 2 mmol/L GABA could not induce any change in dark membrane potential in 8 out of 12 cells, but cause slight depolarization in other 4 cells. These results suggest that the GABA effects may be mediated by GABAA receptors on cone terminals in the majority of the L-type cone horizontal cells. GABA had no effect on rod horizontal cells.
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Affiliation(s)
- D Q Zhang
- Shanghai Institute of Physiology, Laboratory of Neurobiology, Chinese Academy of Sciences
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Abstract
This study examines the effect of gamma-aminobutyric acid (GABA) on the ON and OFF pathways in isolated, superfused carp retina. In most (76%) of amacrine cells bath-applied GABA preferentially suppressed the OFF response. The effect of GABA was blocked by bicuculline. Baclofen did not cause a similar effect. Furthermore, GABA produced a substantial suppression of the OFF bipolar cell response. We conclude that the preferential suppression of the OFF pathway may be due to a presynaptic inhibition mediated via GABA(A) receptors at the terminals of OFF bipolar cells.
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Affiliation(s)
- D Q Zhang
- Shanghai Institute of Physiology, Chinese Academy of Sciences
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43
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Zhang DQ. [Clinical application of visible light curing composite resin]. Shanghai Kou Qiang Yi Xue 1994; 3:238-9. [PMID: 15160137] [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)
- D Q Zhang
- Department of Dentistry, Central Hospital of Hongkou District.Shanghai 200082, China
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Zhang DQ. [Thyroglossal fistula concomitant with micro-carcinoma of the thyroid gland: Follow up of one case for 13 years]. Shanghai Kou Qiang Yi Xue 1994; 3:193. [PMID: 15160121] [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)
- D Q Zhang
- Department of Dentistry, Central Hospital of Hongkou District. Shanghai 200082,China
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Chen SX, Mei SW, Bao SH, Zheng XJ, Chang PL, Yao JS, Yao S, Zhang DQ. Immunological status and pathology of coxsackie B viral myocarditis and dilated cardiomyopathy. Chin Med J (Engl) 1993; 106:659-64. [PMID: 8287699] [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: 01/29/2023] Open
Abstract
The changes in 15 cases of viral myocarditis and 28 cases of dilated cardiomyopathy were reported and compared, which were the pathological changes of endomyocardial biopsy; NK cells activity; % of peripheral T lymphocytes and its subsets determined by using OKT3,4,8 (OKT3-peripheral total lymphocytes; OKT4-helper cells; OKT8-suppressive cells) monoclonal antibody; values of immunoglobulin IgG, IgA, IgM; titer of coxsackie B antibody neutralization test. And a discussion on their relationship was included.
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Affiliation(s)
- S X Chen
- Cardiological Department of Renji Hospital, Shanghai Second Medical University
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46
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Bao SZ, Zhang DQ, Chen JL. [Relation between growth hormone and diabetes mellitus]. Zhonghua Yi Xue Za Zhi 1993; 73:502-4. [PMID: 8111651] [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: 01/28/2023]
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47
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Abstract
The same dialkylphosphite reagent can be used for both N protection and C activation of amino acids. Two N-diisopropyloxyphosphinyl (Dipp) tripeptide esters were prepared, and nine N-Dipp-dipeptide acids were synthesized through the activated amide intermediate. The positive ion FAB-MS of N-Dipp-tripeptide showed novel cleavage patterns in that only the N-phosphoryl fragment ions gave intense peaks while the C-terminal series ions did not appear. This novel character might be useful for peptide sequence analysis. In addition, dialkyloxyphosphinyl group can be examined by 31P-NMR for peptide conformational analysis and inspection for the degree of racemization during the coupling reaction.
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Affiliation(s)
- Y F Zhao
- Department of Chemistry, Tsinghua University, Beijing, China
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48
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Chou KY, Lu PH, Fu SL, Su BH, Yu Q, Zhang DQ, Ma AL, Tsang JC. [The polymorphisms of HTC-defined HLA specificities in the Shanghai Chinese population]. Shi Yan Sheng Wu Xue Bao 1990; 23:219-26. [PMID: 2375209] [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: 12/31/2022]
Abstract
With reference sera and homozygous typing cells (HTCs) of 3rd Asia-Oceania Histocompatibility Workshop Conference, 56 healthy unrelated subjects in Shanghai were typed for HLA-A, B, C, DR, DQ, and Dw. This paper presents the results of HLA-Dw typing, its relationship to serological class II antigens, and the distribution of Dw in the population. The polymorphism patterns of Chinese Dw specificities were quite different from those in Caucasoids and Japanese. The predominant Dw phenotypes detected in Shanghai Chinese were Dw 2, Dw 3, DKT 2, Dw 7 c, (Dw7 + Dw 17) and Dw 23 (DB 5). And significant correlations were observed between Dw 1 and DR 1, Dw 2 and DR 2, Dw 3 and DR 3, Dw 7 c and DR 7, DB 7 and DRw 8, as well as Dw 23 and DR 9. SMY 129, a novel Dw specificity defined by local HTCs and co-studied by the laboratories joined for Dw typing in 3rd AOHWC showed its correlation with DR 5. Nevertheless, more than fifty percent of Dw specificities could not be assigned in the four correspondent designated serological antigens, DR 2, DR 5, DRw 8 and DR 9, respectively, which, together with other blank Dw specificities, gave a total blank Dw gene frequency as high as 43.2% in the population. It was suggested by further analysis that novel Dw specificities might be identified more effectively if efforts would be concentrated on DR 5 and DR 9, two antigen families which, in some way, might represent the characteristics of HLA system in Chinese. Besides, certain HTC-defined antigens, e.g. Dw 3 and the DR 4-related Dw specificities, have been revealed to be in linkage disequilibrium with other DR antigens in addition with the correspondent designated ones, resulting in some unique haplotype combinations in Shanghai Chinese. It seems to us that the particular patterns of polymorphisms of serum- and cell-defined HLA class II antigens would be helpful to elucidate the mechanisms by which certain diseases are in association with HLA in Chinese in a different manner as compared with that in Caucasoids.
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Affiliation(s)
- K Y Chou
- Shanghai Institute of Immunology, Shanghai Second Medical University
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49
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Zhang DQ. [An extensive pedigree of autosomal dominant inheritance of bronchial asthma]. Zhonghua Jie He He Hu Xi Za Zhi 1989; 12:280-1, 318. [PMID: 2632035] [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
This paper reports a particularly extensive pedigree in which 33 (13 men and 20 women) of its 118 members (60 men and 58 women) through four generations had bronchial asthma. There were 22 cases of extrinsic asthma (accounting for 66.7%) which occurred chiefly in the juveniles and 11 cases of mixed asthma (accounting for 33.3%) which occurred mainly in the middle-aged and old people. Pedigree chart suggested the pattern of autosomal dominant inheritance. It was also found that when either husband or wife had the disease, 37.3% (19/51) of the offsprings would have it; and when both husband and wife had it, 83.3% (10/12) of their children would have it. Nevertheless, the patient II9 had two sons (III37, III39) free from asthma; and yet, their two children (IV53, IV54) had the disease. This is an exception. It is thus thought that in addition to hereditary factors, environmental factors and individual differences must also play a certain role.
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50
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Zhang DQ, Qu Z. [Fundus examination of newborns on Tibet plateau]. Zhonghua Yan Ke Za Zhi 1989; 25:200-2. [PMID: 2620612] [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
Fundus examination of 255 newborns in high altitude Tibet revealed that the optic discs were of orange-pink colour with clear margin and over ten small vessels. The C/D ratio in 500 eyes (98.04%) was 0.3 or less, and none was 0.6 or over. The C/D ratio in both eyes of 242 babies (94.90%) was symmetrical and in only 1 case (0.39%) it differed by 0.2. The macula of all infants was dark red with no foveal reflection. Some of the veins were engorged. Retinal hemorrhages were found in 64 cases (25.10%), 12 cases in the macular region and 1 case on the optic disc. Retinal edema was present in 30 cases, cotton wool exudates in 30 cases, vitreous artery in 6 cases, and congenital cataracts in 1 case. The mechanism of retinal changes were discussed.
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