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Shi MY, Liu BY, He J. [The role of NLRP3 inflammasome pathway in silicosis-induced pulmonary fibrosis and its prospect as a therapeutic target]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2024; 42:145-151. [PMID: 38403426 DOI: 10.3760/cma.j.cn121094-20230109-00014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Inhalation of crystalline silicon dioxide particles can induce silicosis, and the development of silicosis is closely related to the occurrence and development of pulmonary inflammation and pulmonary fibrosis. NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome has been established as a major proinflammatory receptor for sensing environmental danger signals. Activation of NLRP3 inflammasomes after phagocytosis of silicon dioxide particles by pulmonary macrophages may be an important mechanism to induce oxidative stress and sustained inflammatory response in the lung. This article summarizes the role of NLRP3 inflammasome in the inflammatory response and pulmonary fibrosis in silicosis, and analyzes it as a potential target for silicosis treatment.
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Affiliation(s)
- M Y Shi
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250062, China
| | - B Y Liu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250062, China
| | - J He
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan 250062, China
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Liang YR, Yang YC, Yang BL, Zeng QX, Liu BY, Zhao Q, Luo Q, Zhao ZH, Yang T, Liu ZH, Xiong CM. [Evaluation effect of COMPERA 2.0 risk assessment model on prognosis of Chinese patients with pulmonary arterial hypertension]. Zhonghua Yi Xue Za Zhi 2023; 103:1410-1416. [PMID: 37150694 DOI: 10.3760/cma.j.cn112137-20221212-02625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Objectives: To clarify the evaluation effect of COMPERA 2.0 risk assessment model on prognosis of pulmonary arterial hypertension (PAH) in China. Methods: Patients with newly diagnosed PAH admitted in Fuwai hospital between April 2019 and March 2022 were enrolled retrospectively and divided in low, intermediate-low, intermediate-high and high strata by scores of COMPERA 2.0 risk assessment model. All the patients were followed up by clinic or telephone. The primary endpoint was defined as a composite of all-cause mortality, exacerbated heart failure and aggravated symptoms. Kaplan-Meier analysis and log-rank trend test were used to determine the risk of endpoints among the 4 groups. Multivariate Cox proportional hazards regression were used to analyze the association between COMPERA 2.0 scores and prognosis in patients with PAH. Results: A total of 951 patients with PAH were enrolled in this study. The age [M (Q1, Q3)] of the patients was 35 (28, 47) years, of which 706 cases (74.2%) were females. A total of 328 cases (34.5%) were assigned in low strata, 264 cases (27.8%) in intermediate-low strata, 193 cases (20.3%) in intermediate-high strata, and 166 cases (17.5%) in high strata. During the duration [M (Q1, Q3)] of follow-up after discharge of 1.8 (1.0, 2.8) years, the primary endpoint was occurred in 12.8% (42/328), 21.2% (56/264), 28.5% (55/193) and 42.8% (71/166) of low, intermediate-low, intermediate-high and high strata, respectively. The rates of primary endpoint were significantly increased with strata rising (P<0.001). Multivariate Cox proportional hazards regression showed that COMPERA 2.0 risk scores were associated with the primary endpoints in PAH patients (HR=1.801, 95%CI: 1.254-2.588, P=0.001) after adjusting confounders. Conclusion: COMPERA 2.0 risk assessment model is a simple and effective tool for evaluating the prognosis of newly diagnosed PAH patients in China.
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Affiliation(s)
- Y R Liang
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Y C Yang
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - B L Yang
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Q X Zeng
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - B Y Liu
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Q Zhao
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Q Luo
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Z H Zhao
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - T Yang
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Z H Liu
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - C M Xiong
- Center of Pulmonary Vascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
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Zhang HK, Min FL, Cui HR, Peng X, Zhang XY, Zhang SX, Li ZX, Ge FJ, Zhang L, Wu ZB, Liu BY. [Characteristics of Phytoplankton Communities and Key Impact Factors in Three Types of Lakes in Wuhan]. Huan Jing Ke Xue 2023; 44:2093-2102. [PMID: 37040959 DOI: 10.13227/j.hjkx.202205100] [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: 04/13/2023]
Abstract
To reveal the characteristics and key impact factors of phytoplankton communities in different types of lakes, sampling surveys for phytoplankton and water quality parameters were conducted at 174 sampling sites in a total of 24 lakes covering urban, countryside, and ecological conservation areas of Wuhan in spring, summer, autumn, and winter 2018. The results showed that a total of 365 species of phytoplankton from nine phyla and 159 genera were identified in the three types of lakes. The main species were green algae, cyanobacteria, and diatoms, accounting for 55.34%, 15.89%, and 15.07% of the total number of species, respectively. The phytoplankton cell density varied from 3.60×106-421.99×106 cell·L-1, chlorophyll-a content varied from 15.60-240.50 μg·L-1, biomass varied from 27.71-379.79 mg·L-1, and the Shannon-Wiener diversity index varied from 0.29-2.86. In the three lake types, cell density, Chla, and biomass were lower in EL and UL, whereas the opposite was true for the Shannon-Wiener diversity index. NMDS and ANOSIM analysis showed differences in phytoplankton community structure (Stress=0.13, R=0.048, P=0.2298). In addition, the phytoplankton community structure of the three lake types had significant seasonal characteristics, with chlorophyll-a content and biomass being significantly higher in summer than in winter (P<0.05). Spearman correlation analysis showed that phytoplankton biomass decreased with increasing N:P in UL and CL, whereas the opposite was true for EL. Redundancy analysis (RDA) showed that WT, pH, NO3-, EC, and N:P were the key factors that significantly affected the variability in phytoplankton community structure in the three types of lakes in Wuhan (P<0.05).
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Affiliation(s)
- Hao-Kun Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fen-Li Min
- Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430071, China
| | - Hui-Rong Cui
- Wuhan Water Enforcement General Unit, Wuhan 430010, China
| | - Xue Peng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin-Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shu-Xian Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhu-Xi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430074, China
| | - Fang-Jie Ge
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Lu Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhen-Bin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430074, China
| | - Bi-Yun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Liu BY, Wang Y, Liu Y, Li J, Cui P, He J. [Research progress of thyroid hormone in pulmonary fibrosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:62-66. [PMID: 36725299 DOI: 10.3760/cma.j.cn121094-20210727-00377] [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: 02/03/2023]
Abstract
Pulmonary fibrosis is end-stage of variety of heterogeneous interstitial lung disease, characterizedby excessive proliferation of fibroblasts and extracellular matrix deposition and destruction of lung parenchyma. Thyroid and lung are derived from the same endodermal cells, thyroid hormone affect the occurrence、development and prognosis of the chronic obstructive pulmonary disease, lung cancer and other lung diseases, This article reviews the role and mechanism of thyroid hormone in pulmonary fibrosis in order to provide new idea for the study of the role and mechanism of thyroid hormone in silicosis.
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Affiliation(s)
- B Y Liu
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
| | - Y Wang
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
| | - Y Liu
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
| | - J Li
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
| | - P Cui
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
| | - J He
- Shandong Academy of Occupational Health and Occupational Medicine (Shandong Province Hospital of Occupational Diseases Hospital of Shandong First Medical University) , Jinan 250062, China
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Liu BY, Li X, Wang TS, Wang T. [Advances in researches on enamel biomimetic mineralization]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:307-313. [PMID: 35280012 DOI: 10.3760/cma.j.cn112144-20210528-00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Dental enamel biomimetic mineralization is a process to form the enamel-like mineral structures, which possess unique microstructure and exceptional physic-chemical properties, by mimicking the mechanism of natural enamel formation and biomineralization. Varieties of techniques such as molecular mimetic synthesis and molecular self-assembling were used to accomplish the microenvironment and molecular conditions similar to that of natural tooth enamel within human body. Early remineralization and biomineralization is the future of restoration for enamel defect, research on such products have huge potential in clinical applications, with speedy advancement in recent two decades. This review summarizes the major advances in researches on enamel biomimetic mineralization in recent years.
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Affiliation(s)
- B Y Liu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, China
| | - X Li
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, China
| | - T S Wang
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, China
| | - Tongxin Wang
- Department of Oral and Maxillofacial Pathology, College of Dentistry, Howard University, Washington DC 20059, U S A
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Wei QT, Liu BY, Ji HY, Lan YF, Tang WH, Zhou J, Zhong XY, Lian CL, Huang QZ, Wang CY, Xu YM, Guo HB. Exosome-mediated transfer of MIF confers temozolomide resistance by regulating TIMP3/PI3K/AKT axis in gliomas. Mol Ther Oncolytics 2021; 22:114-128. [PMID: 34514093 PMCID: PMC8413833 DOI: 10.1016/j.omto.2021.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 03/09/2021] [Accepted: 08/12/2021] [Indexed: 01/08/2023]
Abstract
Temozolomide (TMZ) resistance is an important cause of clinical treatment failure and poor prognosis in gliomas. Increasing evidence indicates that cancer-derived exosomes contribute to chemoresistance; however, the specific contribution of glioma-derived exosomes remains unclear. The aim of this study was to explore the role and underlying mechanisms of exosomal macrophage migration inhibitory factor (MIF) on TMZ resistance in gliomas. We first demonstrated that MIF was upregulated in the exosomes of TMZ-resistant cells, engendering the transfer of TMZ resistance to sensitive cells. Our results indicated that exosomal MIF conferred TMZ resistance to sensitive cells through the enhancement of cell proliferation and the repression of cell apoptosis upon TMZ exposure. MIF knockdown enhanced TMZ sensitivity in resistant glioma cells by upregulating Metalloproteinase Inhibitor 3 (TIMP3) and subsequently suppressing the PI3K/AKT signaling pathway. Additionally, exosomal MIF promoted tumor growth and TMZ resistance of glioma cells in vivo, while IOS-1 (MIF inhibitor) promotes glioma TMZ sensitive in vivo. Taken together, our study demonstrated that exosome-mediated transfer of MIF enhanced TMZ resistance in glioma through downregulating TIMP3 and further activating the PI3K/AKT signaling pathway, highlighting a prognostic biomarker and promising therapeutic target for TMZ treatment in gliomas.
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Affiliation(s)
- Q T Wei
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.,Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - B Y Liu
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - H Y Ji
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.,Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - Y F Lan
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - W H Tang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - J Zhou
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - X Y Zhong
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - C L Lian
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Q Z Huang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - C Y Wang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Y M Xu
- Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - H B Guo
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
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Liu YJ, Huang SZ, Zhang L, Peng X, Zhang XY, Ge FJ, Liu BY, Wu ZB. [Spatial Distribution Characteristics of Phosphorus Fractions and Release Risk in Sediments of Honghu International Importance Wetland]. Huan Jing Ke Xue 2021; 42:3198-3205. [PMID: 34212645 DOI: 10.13227/j.hjkx.202009090] [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: 06/13/2023]
Abstract
According to a spatial distribution analysis of phosphorus in sediments from Honghu Wetland, it was found that TP content in sediments at the mouth of Honghu Lake was 781.31-1955.84 mg·kg-1 and the average value was(1287.21±437.28)mg·kg-1. TP content in sediments in the open water area was 438.33-1554.04 mg·kg-1, with an average value of(718.10±238.15)mg·kg-1. The TP content of sediments in lake inlet was significantly higher than that of sediments in the open water area(P<0.05), and that in the enclosed aquaculture was higher than in the open water area, although no significant difference was observed (P>0.05). The TP content of sediments to the northwest and northeast of Honghu Lake was higher than that to the southwest of Honghu Lake, and the TP content of sediments in The Four-lake main canal was significantly higher than that of Luoshan main canal(P<0.05). The phosphorus input in the Four-lake main canal may be the main source of phosphorus in Honghu Lake sediments. The phosphorus fraction composition in sediments from different sampling sites were significantly different. Fe/Al-P and Ca-P were the main forms of phosphorus in sediments from the lake inlet, while OP and Ca-P were the main forms of phosphorus in sediments from the open water area. The variation in spatial phosphorus form composition was related to the influence of human activity and the distribution of aquatic plants. Fe/Al-P and OP contents were used to estimate the content of biological available phosphorus (BAP) in evaluated sediments, and the proportion of BAP in TP was used to estimate the risk of phosphorus release in Honghu sediments. BAP/TP was 39.8%-69%, with an average of(56.5±7.23)%, indicating a high risk of phosphorus release. OP and BAP were significantly correlated with TP in overlying water(P<0.01), and the correlation between BAP and phosphate in the overlying water was the highest. The results showed that phosphorus concentration in the overlying water may be related to the release of Fe/Al-P and OP into water bodies.
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Affiliation(s)
- Yong-Jiu Liu
- School of Resource & Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Su-Zhen Huang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lu Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xue Peng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin-Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang-Jie Ge
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Bi-Yun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhen-Bin Wu
- School of Resource & Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Zhang N, Xu FJ, Lang J, Wang LB, Wang JM, Sun YH, Liu BY, Xie N, Fang XZ, Yang XL, Kang XN, Wang XQ, Qin ZX, Ge WK, Shen B. Improved light extraction efficiency of AlGaN deep-ultraviolet light emitting diodes combining Ag-nanodots/Al reflective electrode with highly transparent p-type layer. Opt Express 2021; 29:2394-2401. [PMID: 33726435 DOI: 10.1364/oe.416826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Enhancement of light extraction efficiency (LEE) of AlGaN-based deep-ultraviolet (DUV) light emitting diodes (LEDs) has been attempted by adopting Ag-nanodots/Al reflective electrodes on a highly transparent complex p-type layer. By thinning the p-GaN to several nm, highly DUV transparent p-type layer is achieved, making it meaningful for the application of reflective electrodes composed of Ag-nanodots and Al film to allow most light emitted upward to be reflected back to the sapphire side. By this approach, the maximum light output power and external quantum efficiency of the DUV-LEDs with optimized Ag nanodots/Al electrodes are severally increased by 52% and 58%, respectively, compared to those with traditional Ni/Au electrodes when the current is below 200 mA.
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Liu BY, Chen XX, Cao J, Lu Y. Analysis of velopharyngeal function and speech outcomes of Sommerlad palatoplasty combined with sphincter pharyngoplasty in surgical repair of older patients with cleft palate:experience from a major craniofacial surgery centre in eastern China. Br J Oral Maxillofac Surg 2020; 58:819-823. [PMID: 32456995 DOI: 10.1016/j.bjoms.2020.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 04/21/2020] [Indexed: 10/24/2022]
Abstract
We aimed to evaluate velopharyngeal function and speech outcomes of Sommerlad palatoplasty combined with sphincter pharyngoplasty in surgical repair of cleft palate in patients over five years old. Fifty-eight patients were reviewed between the years 2013 and 2017, 31 of whom were treated with Sommerlad palatoplasty combined with sphincter pharyngoplasty, (mean age 15 (range 9 - 22) years), and 27 were treated with Sommerlad palatoplasty alone (mean age 18 (range 10-25) years). Velopharyngeal function was evaluated by radiographic lateral cephalometry and nasoendoscopy. Hypernasality, nasal emissions, and intelligibility were used to assess speech. The rate of velopharyngeal competence was 20/31 in the palatoplasty plus pharyngoplasty group and 7/27 in the palatoplasty alone group after surgical treatment (p=0.003). The improvements in hypernasality (p=0.024), air emission (p=0.004), and speech intelligibility (p=0.004) in the palatoplasty plus pharyngoplasty group was better than that in the palatoplasty alone group. It has been suggested that the surgical approach with the palatoplasty together with the sphincter pharyngoplasty has a higher rate of success in surgical repair of older patients with cleft palate.
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Affiliation(s)
- B Y Liu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, Medical School of Nanjing University, No. 30 Zhong Yang's Road, Xuan Wu, Nanjing 210008, Jiangsu Province
| | - X X Chen
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, Medical School of Nanjing University, No. 30 Zhong Yang's Road, Xuan Wu, Nanjing 210008, Jiangsu Province
| | - J Cao
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, Medical School of Nanjing University, No. 30 Zhong Yang's Road, Xuan Wu, Nanjing 210008, Jiangsu Province
| | - Y Lu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, Medical School of Nanjing University, No. 30 Zhong Yang's Road, Xuan Wu, Nanjing 210008, Jiangsu Province.
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Li JF, Zhu ZG, Liu BY. [Translational research on gastric cancer: Ruijin experience]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:140-143. [PMID: 32074793 DOI: 10.3760/cma.j.issn.1671-0274.2020.02.008] [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] [Indexed: 11/05/2022]
Abstract
Translational medicine refers to translating basic research achievements into the clinical application for diagnosis and treatment. There are still many issues of gastric cancer to be solved in clinical diagnosis and treatment. We need to focus on clinical questions, by means of basic research and multidisciplinary intersection approach, to further improve the overall efficacy of gastric cancer. Based on Ruijin Hospital's translational research experiences, in this paper, the authors describe the future direction in the field of translational research, such as the etiology and pathogenesis of gastric cancer, tumor markers for early diagnosis, prediction of recurrence and metastasis, classification criteria, evaluation of chemotherapy, tumor heterogeneity, targeted therapy, immunotherapy and research platform establishment. In addition, here we share our perspective of the research on serum biomarkers, specific antibodies and improvement of drug delivery for gastric cancer.
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Affiliation(s)
- J F Li
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai 200025, China
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Li XT, Li PY, Liu Y, Yang HS, He LY, Fang YG, Liu J, Liu BY, Chaplin JE. Health-related quality-of-life among patients with premature ovarian insufficiency: a systematic review and meta-analysis. Qual Life Res 2019; 29:19-36. [PMID: 31620985 PMCID: PMC6962283 DOI: 10.1007/s11136-019-02326-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE To systematically review studies investigating health-related quality-of-life (HrQoL) in patients with premature ovarian insufficiency (POI), to examine questionnaires used and to conduct a meta-analysis of control studies with normal ovarian function. METHODS Data sources: PubMed, Embase, Web of science, CNKI, and CQVIP, searched from inception until June 2018. The search strategy was a combination of medical (e.g. POI), subjective (e.g. well-being) and methodological (e.g. questionnaires) keywords. PRISMA guidelines were used to assess outcome data quality/validity by one reviewer, verified by a second reviewer. Risk of bias within studies was evaluated. A meta-analysis compared HrQoL in patients and non-patients. Due to measurement differences in the studies, the effect size was calculated as standard mean difference. RESULTS We identified 6869 HrQoL studies. Nineteen geographically diverse studies met inclusion criteria, dated from 2006, using 23 questionnaires. The meta-analysis included six studies with 645 POI participants (age 33.3 ± 5.47) and 492 normal-ovarian control subjects (age 32.87 ± 5.61). Medium effect sizes were found for lower overall HrQoL (pooled SMD = - 0.73, 95% CI - 0.94, - 0.51; I2 = 54%) and physical function (pooled SMD = - 0.54, 95% CI - 0.69, - 0.39; I2 = 55%). Heterogeneity was investigated. Effect sizes varied for sexual function depending on the measure (SMD = - 0.27 to - 0.74), overall HrQoL (SF-36) had the largest effect size (- 0.93) in one study. The effect sizes for psychological and social HrQoL were small. CONCLUSION POI is associated with low-to-medium effect size on HrQoL compared to normal ovarian controls. The greatest effects are found in general HrQoL and most sexual function areas. Condition-specific questionnaires and RCTs are recommended for further investigation.
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Affiliation(s)
- X T Li
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - P Y Li
- Department of Pediatrics, The Queen Silvia Children's Hospital, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 416 85, Gothenburg, Sweden
| | - Y Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - H S Yang
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
| | - L Y He
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Y G Fang
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
| | - J Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - B Y Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China.
| | - J E Chaplin
- Department of Pediatrics, The Queen Silvia Children's Hospital, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 416 85, Gothenburg, Sweden
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Lang J, Xu FJ, Ge WK, Liu BY, Zhang N, Sun YH, Wang JM, Wang MX, Xie N, Fang XZ, Kang XN, Qin ZX, Yang XL, Wang XQ, Shen B. Greatly enhanced performance of AlGaN-based deep ultraviolet light emitting diodes by introducing a polarization modulated electron blocking layer. Opt Express 2019; 27:A1458-A1466. [PMID: 31684498 DOI: 10.1364/oe.27.0a1458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/03/2019] [Indexed: 06/10/2023]
Abstract
Carrier transport in AlGaN-based deep ultraviolet (DUV) light emitting diodes (LEDs) with the wavelength of 273 nm has been investigated by introducing polarization modulated electron blocking layer (EBL) that adopts an Al composition and thickness graded multiple quantum barriers (MQB) structure. The experimental result shows that the maximum light output power and external quantum efficiency for the proposed structure at the current of 250 mA are 9.6 mW and 1.03% respectively, severally increasing by 405% and 249% compared to traditional one, meanwhile, the efficiency droop at 250 mA is also dramatically reduced from 42.2% to 16.6%. Further simulation analysis indicates that this graded MQB-EBL enhances the potential barrier height for electrons and meanwhile reduces that for holes, hence effectively suppresses the electron leakage, and at the same time significantly improves the hole injection efficiency. As a result, the whole performance of the LED with the proposed MQB-EBL is dramatically improved.
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Gao X, Xiao JH, Liu BY, Wang HB. Impact of meteorological and geographical factors on the distribution of Phlebotomus chinensis in northwestern mainland China. Med Vet Entomol 2018; 32:365-371. [PMID: 29808937 DOI: 10.1111/mve.12307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 10/09/2017] [Revised: 04/03/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
Phlebotomine sandflies (Diptera: Phlebotomidae) are vectors of the zoonotic disease leishmaniasis. To better understand the distribution of phlebotomine sandflies in order to facilitate control of leishmaniasis transmission, the present study explored the impacts of climate and landscape on local abundances of Phlebotomus chinensis in northwestern mainland China. Identification records were used to create a geodatabase for the locations at which P. chinensis had been collected in the region, and a regional-scale map was developed to show the distribution of P. chinensis. Location data and data on environmental factors during the years in which the samples were collected were incorporated, and a presence-only modelling method was used to evaluate the species' habitat preferences and to predict its potential distribution in northwestern mainland China. Jackknife analysis revealed that several meteorological variables, including maximum temperature in the warmest quarter, precipitation in the driest month, daily average temperature and daily precipitation, significantly affected the presence of this species. Moreover, the presence of P. chinensis was significantly associated with grassland and shrubland. Probability distributions using maximum entropy were used to map the distribution ranges of P. chinensis based on suitable habitats in northwestern mainland China. The models generated can be used to develop detailed strategies for the prevention and control of leishmaniasis.
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Affiliation(s)
- X Gao
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - J H Xiao
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - B Y Liu
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - H B Wang
- Department of Veterinary Surgery, Northeast Agricultural University, Harbin, Heilongjiang, China
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Liu BY, Yang L, Wang BJ, Wang ZH, Cheng LL, Xie H, Qiu X, Ma ZJ, Zhao DW. [Prevention for glucocorticoid-induced osteonecrosis of femoral head: a long-term clinical follow-up trail]. Zhonghua Yi Xue Za Zhi 2018; 97:3213-3218. [PMID: 29141357 DOI: 10.3760/cma.j.issn.0376-2491.2017.41.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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 evaluated the outcome of prevention and treatment for glucocorticoid-induced osteonecrosis of femoral head with anticoagulant and vasodilator drugs. Methods: A prospective, randomized, double-blind study was performed. From August 2003 to August 2006, 58 patients with large amounts of hormone therapy in the Zhongshan Hospital Affiliated Dalian University were enrolled and randomly assigned to the control group (placebo) or preventive group (anticoagulant and vasodilator drugs). And we prospectively analyzed the clinical outcomes of 24 patients with glucocorticoid-induced osteonecrosis of femoral head early stage (treatment group)treated by anticoagulant and vasodilator drugsat the same time. Disease incidence rate and progression were evaluated by radiography and magnetic resonance imaging (MRI), Follow-up of patients with femoral head survival curve was drawn. The Harris Hip Score and the Short Form 36 health survey were used to rate hip function and quality of life, respectively. Results: Thus, a total of 80 patients were assessed in this study, 24 cases in control group[follow up from 7.5 to 13.0(10.7±1.6)years], 22 cases in preventive group and 24 cases in treatment group. There was significant difference in theincidence rate of Osteonecrosis of femoral head, survive rate of femoral head and HHS score between the control groupand preventive group(41.7% vs 13.6%, 66.7% vs 70.8% , P<0.01). Conclusion: Anticoagulant and vasodilator drugs could effect on preventing theglucocorticoid-induced osteonecrosis of femoral head, reducing disease progression, or improving life quality.
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Affiliation(s)
- B Y Liu
- Department of Orthopedic, Zhongshan Hospital of Dalian University, Dalian 116001, China
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Zou PC, Yang YF, Xu XY, Liu BY, Mei F, You JF, Liu QC, Pei F. [Silencing of vacuolar ATPase c subunit ATP6V0C inhibits invasion of prostate cancer cells]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:937-947. [PMID: 29263462] [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: 01/10/2023]
Abstract
OBJECTIVE Vacuolar ATPase (V-ATPase) was found within the membranes and internal organelles of a vast array of eukaryotic cells, and was related to various kinds of highly metastatic tumors. LASS2/TMSG1 gene was a novel tumor metastasis suppressor gene cloned from human prostate cancer cell line PC-3M in 1999 by our laboratory. It was found out that protein encoded by LASS2/TMSG1 could interact with the c subunit of V-ATPase (ATP6V0C). In this study, To use RNA interference to suppress the expression of ATP6V0C and try to further investigate the molecular mechanism of ATP6V0C in tumor metastasis and its relationship with LASS2/TMSG1 gene. METHODS AND RESULTS The expression level of ATP6V0C mRNA and protein in high metastatic potential prostate cancer cell lines (PC-3M-1E8 and PC-3M) was significantly higher than that in low metastatic potential prostate cancer cell lines (PC-3M-2B4 and PC-3), the expression level in PC-3M-1E8 being the highest. Follow-up tests selected PC-3M-1E8 cells for gene silencing. The expression and secretion of MMP-2 and the expression of MMP-9 in ATP6V0C siRNA transfected PC-3M-1E8 cells displayed no obvious change, but the activity of secreted MMP-9 was abated noticeably compared with the controls (P<0.05). Extracellular hydrogen ion concentration and V-ATPase activity in interference group were both reduced significantly compared with the controls (P<0.05). The migration and invasion capacity of ATP6V0C siRNA interfered cells in vitro were diminished significantly compared with the controls (P<0.05). Furthermore, a dramatic reduction of LASS2/TMSG1 mRNA and protein level after transfection of siRNA in PC-3M-1E8 cells was discovered (P<0.05). Confocal immunofluorescence showed a vast co-localization of ATP6V0C protein and LASS2/TMSG1 protein in plasma and membrane. The co-localization signals of control group were much stronger than those of interference group. CONCLUSION Specific siRNA silencing of ATP6V0C gene inhi-bits the invasion of human prostate cancer cells in vitro by mechanism of inhibiting V-ATPase activity and then reducing the extracellular hydrogen ion concentration, inhibiting MMP-9 activation and affecting ECM degradation and reconstruction. Meanwhile, ATP6V0C and LASS2/TMSG1 have interaction and it is likely that ATP6V0C functions as a feedback regulator of LASS2/TMSG1.
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Affiliation(s)
- P C Zou
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China; Department of Pathology, Qingdao Central Hospital, Qingdao 266000, Shandong, China
| | - Y F Yang
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - X Y Xu
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China; Department of Pathology, School of Basic Medical Sciences, Inner Monglia Medical College, Huhhot 010059, China; Department of Pathology, The Affiliated Hospital of Inner Monglia Medical College, Huhhot 010059, China
| | - B Y Liu
- School of Mechanical Engineering, University of Science & Technology Beijing, Beijing 100083, China
| | - F Mei
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - J F You
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China
| | - Q C Liu
- Yuxin School attached to Capital Normal University,Beijing 100096, China
| | - F Pei
- Department of Pathology, Peking University School of Basic Medical Sciences, Beijing 100191, China
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Lin QW, He F, Ma JM, Zhang Y, Liu BY, Min FL, Dai ZG, Zhou QH, Wu ZB. Impacts of residual aluminum from aluminate flocculant on the morphological and physiological characteristics of Vallisneria natans and Hydrilla verticillata. Ecotoxicol Environ Saf 2017; 145:266-273. [PMID: 28753419 DOI: 10.1016/j.ecoenv.2017.07.037] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 06/07/2023]
Abstract
Aluminate is generally used as a flocculant in water and wastewater treatment processes, but the residual aluminum (Al) may have toxic effects on aquatic organisms when the concentration accumulates beyond a threshold level. The in situ and laboratory tests were conducted to evaluate the impact of residual Al on submerged macrophytes in West Lake, Hangzhou, China, which receives Al flocculant-purified water diverted from the Qiantang River. The responses of Vallisneria natans and Hydrilla verticillata were investigated based on their morphological and physiological parameters in pot culture and aquarium simulation experiments. In the pot culture experiments, the biomass, seedling number, plant height, stolon number, stolon length, and root weight were significantly higher at a site located 150m from the inlet compared with those at a site located 15m from the inlet (P < 0.05), thereby indicating that the residual Al significantly inhibited the morphological development of V. natans and H. verticillata. The variations in the chlorophyll-a, protein, and malondialdehyde contents of the two species in both the pot culture and aquarium simulation experiments also demonstrated that the two submerged macrophytes were stressed by residual Al. V. natans and H. verticillata accumulated 0.052-0.227mg of Al per gram of plant biomass (fresh weight, mg/g FW) and 0.045-0.205mg Al/g FW in the in situ experiments, respectively, where the amounts of Al were significantly higher in the plants in the treatment aquaria during the laboratory experiments than those in the controls. These results may have important implications for the restoration of submerged macrophytes and ecological risk assessments in Al-exposed lakes. It is recommended that the Al salt concentration used for the control of lake eutrophication should be reduced to an appropriate level.
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Affiliation(s)
- Qing-Wei Lin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Jian-Min Ma
- School of Life Sciences, Henan Normal University, Xin Xiang 453007, PR China.
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Bi-Yun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Fen-Li Min
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Gang Dai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Qiao-Hong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhen-Bin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Liang YJ, Li ZL, Wang L, Liu BY, Ding RY, Ma XC. [Comparision of risk factors and pathogens in patients with early- and late-onset ventilator-associated pneumonia in intensive care unit]. Zhonghua Nei Ke Za Zhi 2017; 56:743-746. [PMID: 29036955 DOI: 10.3760/cma.j.issn.0578-1426.2017.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare risk factors and bacterial etiology in patients with early-onset versus late-onset ventilator-associated pneumonia (VAP) in intensive care unit (ICU). Methods: This prospective cohort study enrolled mechanically ventilated patients hospitalized for more than 48 hours in the first affiliated hospital, China Medical University from Jan 2012 to Jun 2016. Subjects were classified by ventilator status: early-onset VAP (< 5 d ventilation, E-VAP) or late-onset VAP (≥ 5 d ventilation, L-VAP). Potential risk factors and pathogen were evaluated. Results: A total of 4 179 patients in adult ICU were screened, 3 989 (95.5%) of whom were mechanically ventilated, 962 patients with mechanical ventilation time ≥ 48 h. VAP developed in 142 patients. E-VAP and L-VAP had different potential risk factors based on statistical analysis.Independent risk factors for E-VAP included male (OR=1.825, 95%CI 1.006-3.310), chronic obstructive pulmonary disease (COPD; OR=3.746, 95%CI 1.795-7.818), emergency intubation (OR=1.932, 95%CI 1.139-3.276), aspiration (OR=3.324, 95%CI 1.359-8.130). Whereas independent risk factors for L-VAP were coma (OR=2.335, 95%CI 1.300-4.194), renal dysfunction (OR=0.524, 95%CI 0.290-0.947), emergency intubation (OR=2.184, 95%CI 1.334-3.574). Mortality in E-VAP and L-VAP group were both higher than the non-VAP group[30.2%(19/63)vs 19.8%(162/820), P=0.044; 29.1%(23/79) vs 19.8%(162/820), P=0.046]. The pathogens isolated from early-onset versus late-onset VAP were not significantly different between groups, which the most common ones were acinetobacter baumannii, pseudomonas aeruginosa and klebsiella pneumoniae. Conclusion: E-VAP and L-VAP have different risk factors, however related pathogens are similar. Different specific preventive strategies are suggested based on different onset of VAP.
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Affiliation(s)
- Y J Liang
- Department of Intensive Care Unit, the First Hospital of China Medical University, Shenyang 110001, China
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Liu BY, Wang JL, Xiao YZ. [Prevalence of senile dementia in people aged ≥60 years in China: a Meta-analysis]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:1541-1545. [PMID: 28057149 DOI: 10.3760/cma.j.issn.0254-6450.2016.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the prevalence of senile dementia in the elderly aged ≥60 years in China between 2000 and 2015. Methods: Publications between 2000 and 2015 were retrieved from China National Knowledge Infrastructure (CNKI), Wanfang Databases, Chinese Science and Technology Journal Databases (VIP) and PubMed. Observational studies on prevalence of senile dementia were included. Meta-analysis was carried out by using R software. Results: A total of 25 papers were included in this study. The total number of participants investigated was 76 980, with 4 295 dementia cases identified. The prevalence of senile dementia in the elderly was 5.15% (95%CI: 4.21%-6.09%); Subgroup analysis showed that the women had a higher prevalence (6.08%) than the men (4.10%); and the prevalence was significant increased with age (The senile dementia prevalence was 1.01% in age groups 60-64 years, but 23.60% in age group ≥85 years). The prevalence of Alzheimer's disease (3.56%) was higher than that of cerebral vascular dementia (1.11%). The senile dementia prevalence in the illiterate was 8.74%, higher than 3.17% in the literate. The prevalence of senile dementia in the unmarried was 6.83%, higher than that in the married (3.95%). Conclusion: The prevalence of senile dementia was high in the population aged ≥60 years in China. Age, sex, education level and marital status might influence the prevalence of senile dementia.
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Affiliation(s)
- B Y Liu
- School of Public Health, Kunming Medical University, Kunming 650500, China
| | - J L Wang
- School of Public Health, Kunming Medical University, Kunming 650500, China
| | - Y Z Xiao
- Institute for Chronic and Non-communicable Disease Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
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Ding RY, Qiu JN, Liu BY, Li XX, Sun YN, Liang YJ, Zhao DM, Zhu R, Zhang ZD, Ma XC. [A retrospective clinical study of sixty-three cases with persistent inflammation immunosuppression and catabolism syndrome]. Zhonghua Nei Ke Za Zhi 2017; 55:941-944. [PMID: 27916049 DOI: 10.3760/cma.j.issn.0578-1426.2016.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinical characteristics and prognosis of patients with persistent inflammation immunosuppression and catabolism syndrome (PICS) in ICU. Methods: A total of 126 patients admitted to ICU (ICU stay of more than 10 days, age≥18 years) between January 2014 to December 2014 were retrospectively studied.Data were collected from electronic medical records including demographics, underlying disease, Acute Physiology and Chronic Health Evaluation Ⅱ (APACHEⅡ) score, Sequential Organ Failure Assessment (SOFA) score, laboratory parameters, ICU acquired infections and clinical outcome. Results: The overall incidence of PICS in ICU patients (ICU stay of more than 10 days) was 50.0%(63/126). There were no significant differences in baseline data such as gender, age, APACHEⅡscore, SOFA score and underlying diseases between the two groups(all P>0.05). Compared with the non-PICS group, there were more patients with gastrointestinal perforation in the PICS group (P=0.042), however, the medical or surgical admission did not differ between the two groups(P>0.05). During the stay in ICU, the PICS group showed a higher risk of developing acquired infections compared with the non-PICS group[PICS 63.5%(40/63) vs non-PICS 23.8%(15/63); P<0.001]. The infections were more caused by Candida in the PICS group than the non-PICS group [PICS 22.4%(11/49) vs non-PICS 2/17; P=0.003]. Moreover, the PICS group experienced longer stay in ICU[PICS(31.6±28.8) days vs non-PICS (20.4±11.3) days; P=0.0046] and higher ICU mortality [PICS 28.6%(18/63) vs non-PICS 6.3%(4/63), P=0.001]. Conclusion: PICS is a common manifestation of patients who stay in ICU more than 10 days, which is associated with high risk of ICU acquired infections, prolonged length of stay and high mortality.
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Affiliation(s)
- R Y Ding
- Department of Intensive Care Unit, the First Hospital of China Medical University, Shenyang 110001, China
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Gao YN, Ge FJ, Zhang LP, He Y, Lu ZY, Zhang YY, Liu BY, Zhou QH, Wu ZB. Enhanced toxicity to the cyanobacterium Microcystis aeruginosa by low-dosage repeated exposure to the allelochemical N-phenyl-1-naphthylamine. Chemosphere 2017; 174:732-738. [PMID: 28213307 DOI: 10.1016/j.chemosphere.2017.01.102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 12/07/2016] [Accepted: 01/20/2017] [Indexed: 06/06/2023]
Abstract
It has been puzzling whether and how a plant could exert a strong allelopathic inhibition to the target organisms by releasing low concentrations of allelochemicals. Plant allelochemicals have been proposed to be released continuously, however, direct evidence from specific allelochemicals is urgently required. In the present study, the toxicity of allelochemical N-phenyl-1-naphthylamine (NPN) towards the cyanobacterium Microcystis aeruginosa by two different exposure patterns was compared. One was low-dosage repeated exposure (LRE), in which 50 μg L-1 NPN was repeatedly dosed to simulate the continual release of allelochemicals, and the other one was high-dosage single exposure (HSE) as per the routine toxicity assay. The results showed a significant growth inhibition to M. aeruginosa in the LRE group, where the inhibition rate reached above 90% from day 6 to day 9. The cell-membrane damage ratio increased from 64.05% on day 5 up to 96.60% on day 9. PSII photosynthesis activity expressed as Fv/Fm, ΦPSII, NPQ and ETRmax was also thoroughly inhibited in this group. Whereas the growth and PSII photosynthesis activity of M. aeruginosa in the HSE group were inhibited initially, but recovered gradually from day 4 or 5, which was accompanied by a continuous reduction of NPN content in culture solutions. Although NPN content in the LRE group was relatively lower, it remained at a more stable level throughout the experiment. These results indicate that continual release of low-dosage allelochemicals by aquatic plants plays crucial roles in their potent inhibition against cyanobacteria. Low-dosage continual exposure pattern needs to be investigated further.
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Affiliation(s)
- Y N Gao
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang, Henan, 453007, China
| | - F J Ge
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - L P Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - Y He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - Z Y Lu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - Y Y Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - B Y Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - Q H Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China.
| | - Z B Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
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Xu P, Xiao ER, Xu D, Zhou Y, He F, Liu BY, Zeng L, Wu ZB. Internal nitrogen removal from sediments by the hybrid system of microbial fuel cells and submerged aquatic plants. PLoS One 2017; 12:e0172757. [PMID: 28241072 PMCID: PMC5328281 DOI: 10.1371/journal.pone.0172757] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/09/2017] [Indexed: 11/18/2022] Open
Abstract
Sediment internal nitrogen release is a significant pollution source in the overlying water of aquatic ecosystems. This study aims to remove internal nitrogen in sediment-water microcosms by coupling sediment microbial fuel cells (SMFCs) with submerged aquatic plants. Twelve tanks including four treatments in triplicates were designed: open-circuit (SMFC-o), closed-circuit (SMFC-c), aquatic plants with open-circuit (P-SMFC-o) and aquatic plants with closed-circuit (P-SMFC-c). The changes in the bio-electrochemical characteristics of the nitrogen levels in overlying water, pore water, sediments, and aquatic plants were documented to explain the migration and transformation pathways of internal nitrogen. The results showed that both electrogenesis and aquatic plants could facilitate the mineralization of organic nitrogen in sediments. In SMFC, electrogenesis promoted the release of ammonium from the pore water, followed by the accumulation of ammonium and nitrate in the overlying water. The increased redox potential of sediments due to electrogenesis also contributed to higher levels of nitrate in overlying water when nitrification in pore water was facilitated and denitrification at the sediment-water interface was inhibited. When the aquatic plants were introduced into the closed-circuit SMFC, the internal ammonium assimilation by aquatic plants was advanced by electrogenesis; nitrification in pore water and denitrification in sediments were also promoted. These processes might result in the maximum decrease of internal nitrogen with low nitrogen levels in the overlying water despite the lower power production. The P-SMFC-c reduced 8.1%, 16.2%, 24.7%, and 25.3% of internal total nitrogen compared to SMFC-o on the 55th, 82th, 136th, and 190th days, respectively. The smaller number of Nitrospira and the larger number of Bacillus and Pseudomonas on the anodes via high throughput sequencing may account for strong mineralization and denitrification in the sediments under closed-circuit. The coupled P-SMFC system has shown good potential for the efficient removal of internal nitrogen.
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Affiliation(s)
- Peng Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - En-Rong Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- * E-mail:
| | - Dan Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, China
| | - Yin Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Bi-Yun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Lei Zeng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhen-Bin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
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Liu Y, Chen GQ, Liu BY, Chen Q, Qian YM, Qin SS, Liu CL, Xu CS. P2X 7 receptor in the hippocampus is involved in gp120-induced cognitive dysfunction. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019356. [PMID: 28128418 DOI: 10.4238/gmr16019356] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To investigate the role of the P2X7 receptor in learning and memory dysfunction induced by HIV-1 envelope glycoprotein gp120 (gp120), we established HIV-1-associated dementia (HAD) animal models by intracerebroventricular (ICV) infusion of gp120 in rats. We observed gp120-induced cognitive dysfunction in the radial arm water maze test. Results showed that rats in the gp120 groups had longer escape latencies and more errors compared to those in the control group. For example, the average trial time in the 50-ng/day-gp120 group on day eight (16.57 ± 1.71 s, N = 90) was significantly longer than that of control rats (9.93 ± 0.68 s, N = 90). The relative expression of P2X7 mRNA in the control, 50-, 70-, and 100-ng/day-gp120 groups were 0.43 ± 0.06, 0.48 ± 0.07, 0.83 ± 0.05, and 0.84 ± 0.10, respectively; relative P2X7 protein expression in those groups was 0.63 ± 0.07, 1.08 ± 0.06, 0.90 ± 0.07, and 1.03 ± 0.11, respectively. According to immunohistochemistry analysis, the staining intensity values for P2X7 protein expression in the control, 50-, 70-, and 100-ng/d-gp120 groups were 0.88 ± 0.07, 1.41 ± 0.12, 1.28 ± 0.13, and 1.31 ± 0.10, respectively. The above results showed that the expression of P2X7 increased significantly in the hippocampus of gp120 rats compared to that of the control group. These results suggest that ICV infusion of gp120 can successfully mimic HAD in rats, and P2X7 may be involved in gp120-induced cognitive dysfunction. This could provide a theoretical foundation and potential drug target for research and treatment of ADC.
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Affiliation(s)
- Y Liu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - G Q Chen
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - B Y Liu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - Q Chen
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - Y M Qian
- Nursing College, Nanchang University, Nanchang, China
| | - S S Qin
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - C L Liu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - C S Xu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
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Chen Q, Hu J, Qin SS, Liu CL, Wu H, Wang JR, Lu XM, Wang J, Chen GQ, Liu Y, Liu BY, Xu CS, Liang SD. Protective effects of naringin against gp120-induced injury mediated by P2X7 receptors in BV2 microglial cells. Genet Mol Res 2016; 15:gmr8649. [PMID: 27323041 DOI: 10.4238/gmr.15028649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study was aimed at exploring the effects of P2X7 receptors on gp120-induced injury and naringin's protective effects against gp120-induced injury in BV2 microglia. BV2 microglia injury model was established by gp120 treatment and MTS assay was used to verify whether naringin has a cell-protective effect against gp120-induced injury. Changes in P2X7 receptor expression were assayed using RT-PCR, qPCR, and western blot. Results showed that the ODs of the Ctrl, gp120, gp120+naringin, and gp120+BBG groups were 0.91 ± 0.10, 0.71 ± 0.09, 0.83 ± 0.10, and 0.83 ± 0.10, respectively. Compared to the control group, the gp120 group showed a significantly decreased cell survival rate. Cell survival rates of the gp120+naringin group increased significantly compared to those of the gp120 group, while no difference was observed when compared to the gp120+BBG group. The relative P2X7 mRNA expression levels in the Ctrl, gp120, gp120+naringin, and gp120+BBG groups were 0.73 ± 0.06, 1.05 ± 0.06, 0.78 ± 0.05, and 0.81 ± 0.04, respectively. The corresponding P2X7 protein expression levels were 0.46 ± 0.04, 0.79 ± 0.04, 0.38 ± 0.07, and 0.42 ± 0.06. P2X7 mRNA and protein expression in the gp120 group increased significantly compared to those in the control group, and declined in the gp120+naringin group compared to those in the gp120 group. Therefore, P2X7 receptors might be involved in gp120-induced injury in BV2 microglia, and naringin might play a protective role by inhibiting the up-regulated expression of P2X7 receptors.
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Affiliation(s)
- Q Chen
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - J Hu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - S S Qin
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - C L Liu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - H Wu
- The Second Clinical Medical College, Nanchang University, Nanchang, China
| | - J R Wang
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - X M Lu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - J Wang
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - G Q Chen
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - Y Liu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - B Y Liu
- The First Clinical Medical College, Nanchang University, Nanchang, China
| | - C S Xu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
| | - S D Liang
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, China
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Sheng CF, Wang R, Liu BY, Zhang HM, Fang M, Zheng X. Post-surgical treatment of a patient with ectopic pheochromocytoma. Genet Mol Res 2015; 14:2139-45. [PMID: 25867361 DOI: 10.4238/2015.march.20.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We report here the course and treatment of a patient with ectopic pheochromocytoma. The patient was cured after treatment with respiratory and circulatory support, multiple-organ protection, and continuous renal replacement therapy (CRRT) for approximately 2 weeks. After misdiagnosis, a patient with ectopic pheochromocytoma who is being treated should undergo aggressive fluid supplementation and CRRT instead of central venous pressure measurement, which has limited value in guiding fluid supplementation. The main priority is maintaining hypotension. Hypertension may be controlled with rapid-acting agents. A good outcome can be anticipated for patients who undergo comprehensive intensive care unit therapy.
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Affiliation(s)
- C F Sheng
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
| | - R Wang
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
| | - B Y Liu
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
| | - H M Zhang
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
| | - M Fang
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
| | - X Zheng
- Intensive Care Unit, Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei, China
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Zhang Q, Jin XS, Yang ZY, Wei M, Liu BY, Gu QL. Upregulated Hoxc6 expression is associated with poor survival in gastric cancer patients. Neoplasma 2013; 60:439-45. [PMID: 23581417 DOI: 10.4149/neo_2013_057] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Human Hox genes (Homeobox) have crucial roles in development and differentiation, regulating numerous processes including apoptosis, receptor signalling, differentiation, motility and angiogenesis. Aberrant expression of Hoxc6 gene has been reported in several tumor tissues and cancer cell lines. The prognostic significance of Hoxc6 in gastric cancer remains largely unknown.This study was aimed to investigate the clinical significance of Hoxc6 in gastric cancer.Total RNA of paired tissue samples (n=25) and a tissue microarray containing 161 paired tissues from patients with gastric cancers at different stages were collected. Quantitative real-time PCR and immunochemistry assay were carried out to investigate the expression of Hoxc6. Hoxc6 mRNA was increased in gastric cancer tissues ( 16 of 25) compared with the adjacent normal mucosa (P<0.05). Immunohistochemical detection showed that expression of Hoxc6 was associated with the depth of tumor invasion (P<0.05). Patients with higher expression levels of Hoxc6 had a shorter overall survival rate (P<0.05).Hoxc6 might contribute to the progression of gastric carcinogenesis and may be a significant predictor of poor survival in patients with gastric cancer after curative operations.
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Affiliation(s)
- Q Zhang
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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26
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Abstract
To investigate the effectiveness of topical fluorides in preventing fissure caries, we conducted a randomized controlled trial with parallel groups. In total, 501 children (1,539 molars, 3,078 sites), mean age 9.1 years, who had at least one sound permanent first molar with deep fissures or fissures with signs of early caries were recruited. They were randomly allocated among four groups: (1) resin sealant, single placement; (2) 5% NaF varnish, semi-annual application; (3) 38% silver diamine fluoride (SDF) solution, annual application; and (4) placebo control. Follow-up examinations were conducted every 6 months by a masked examiner. After 24 months, 485 children (97%) were examined. Proportions of pit/fissure sites with dentin caries in the sealant, NaF, SDF, and control groups were 1.6%, 2.4%, 2.2%, and 4.6%, respectively. A multi-level logistic regression analysis accounting for the effects of data clustering and confounding factors showed that fissures in any of the three treatment groups had significantly lower risks of carious cavity development into dentin than did controls (p < 0.05). We concluded that placement of resin sealant, semi-annual application of NaF varnish, and annual application of SDF solution are all effective in preventing pit and fissure caries in permanent molars (ClinicalTrials.gov number CT01446107).
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Affiliation(s)
- B Y Liu
- Faculty of Dentistry, University of Hong Kong, 3/F, Prince Philip Dental Hospital, Hong Kong SAR
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27
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Affiliation(s)
- B Y Liu
- Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
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28
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Zhu JY, Liu BY, Wang J, Gao YN, Ge FJ, Liang W, Zhang LP, Wu ZB. [Allelopathic influence of Myriophyllum spicatum on the photosynthetic efficiency of Microcystis aeruginosa]. Huan Jing Ke Xue 2011; 32:2904-2908. [PMID: 22279899] [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: 05/31/2023]
Abstract
The allelopathic influence of Myriophyllum spicatum on chlorophyll content and chlorophyll fluorescence parameters of Microcystis aeruginosa was studied in coexistence condition. Chlorophyll fluorescence parameters included q(N) (non-photochemical quenching), Y II (effective quantum yield), F(v)/F(m) (maximum quantum yield), F'(v)/F'(m) (effective quantum yield of photosystem II photochemistry) and ETR (electron transport rate). During the three days under coexistence condition, chlorophyll content and chlorophyll fluorescence parameters of M. aeruginosa were affected by M. spicatum and presented different sensitivities. Chlorophyll content of M. aeruginosa was significantly inhibited by 20.80% on the second day at 10.0 g/L of M. spicatum (P < 0.05). However, chlorophyll fluorescence parameters of M. aeruginosa decreased earlier and rapider than chlorophyll content. On the first day, q(N) and Y II of M. aeruginosa were significantly inhibited by 15.59% and 13.00% at 5.0 g/L of M. spicatum (P < 0.05), and F(v)/F(m) and F'(v) /F'(m) were declined by 15.87% and 12.07% at 10.0 g/L (P < 0.05), respectively. On the third day, ETR and three parameters based on ETR were affected at all levels of M. spicatum (P < 0.05). The inhibition effects on the photosynthetic activity of M. aeruginosa might be considered as one of the target sites of M. spicatum and chlorophyll fluorescence parameters were more sensitive parameters than chlorophyll content, especially q(n).
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Affiliation(s)
- Jun-Ying Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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29
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Liu BY, Wang ZY, Yang HM, Wang JM, Xu D, Zhang R, Wang Q. Influence of rearing system on growth performance, carcass traits, and meat quality of Yangzhou geese. Poult Sci 2011; 90:653-9. [PMID: 21325238 DOI: 10.3382/ps.2009-00591] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
An experiment was conducted using a total of 540 one-day-old Yangzhou geese to study the effect of rearing system on growth performance, carcass traits, and meat quality of male and female Yangzhou geese. The birds were divided into homogeneous groups according to initial BW and sex. The male and female geese were raised in separate pens under 5 different treatments, with 3 replicate pens of 18 male or 18 female geese per pen for each treatment. This experiment included 2 stages, with geese at 1 to 28 d of age (the first stage) and 29 to 70 d of age (the second stage). The 5 different treatments were 1) system A (geese raised on a wire floor), 2) system B (geese raised on the floor), 3) system C (geese raised on the floor and transferred to to a wire floor), 4) system D (geese raised on a wire floor and transferred to the floor), and 5) system E (geese raised on the floor and transferred to a free range). Results showed that feed conversion rate, BW, and BW gain were significantly affected by rearing system and sex (P < 0.05). For carcass yield, results suggested that eviscerated carcass yield and heart yield were affected by rearing system (P < 0.05) but not by sex (P > 0.05). Differences between sexes, but not rearing systems, were observed for only breast yield, thigh yield, and liver yield (P < 0.05). Rearing system and sex had a remarkable effect (P < 0.05) on subcutaneous fat thickness, abdominal fat yield, and gizzard yield. The nutrient composition (water, protein, and fat), water-holding capacity, shear force, and pH of the pectoralis major muscle were not affected (P > 0.05) by the rearing system, and only water, protein, and pH of the meat were affected by sex (P < 0.05). This study indicates that rearing system A, in which Yangzhou geese were raised on a wire floor, improved growth performance but had little effect on meat quality, implying that the use of rearing system A, using a wire floor, might be feasible and effective for Yangzhou geese.
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Affiliation(s)
- B Y Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, People's Republic of China
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Zhang Q, Cheng ML, Liu Q, Mu M, Zhang YY, Liu BY. Efficacy of entecavir in nucleoside-naïve patients with hepatitis B e antigen-positive chronic hepatitis B. Shijie Huaren Xiaohua Zazhi 2009; 17:2846-2849. [DOI: 10.11569/wcjd.v17.i27.2846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the efficacy and safety of entecavir in nucleoside-naïve patients with hepatitis B e antigen (HBeAg)-positive chronic hepatitis B.
METHODS: One hundred and one nucleoside-naïve patients with chronic hepatitis B were randomly divided into two groups. The entecavir (ENT) treatment group was given 0.5 mg of ENT once daily, while the adefovir dipivoxil (AD) treatment group was given 10 mg of AD once daily. The primary outcome measures assessed included serum hepatitis B virus (HBV) DNA level, HBeAg seroconversion or normalization of alanine aminotransferase (ALT) level.
RESULTS: At week 48 after the treatment, serum HBV DNA levels decreased in both the ENT and AD treatment groups. The percentage of patients showing a reduction greater than 103 copies/mL in HBV DNA titer was significantly higher in the ENT treatment group than in the AD treatment group (95.83% vs 60.38%, P < 0.001). The percentage of patients achieving normalization of ALT level was also significantly higher in the ENT treatment group than in the AD treatment group (52.08% vs 28.30%, P = 0.015). No significant difference was observed in the incidence rate of adverse events (77.08% vs 71.69%, P = 0.536) between the two groups. No HBeAg seroconversion was noted in both groups.
CONCLUSION: In nucleoside-naïve patients with HBeAg-positive chronic hepatitis B, entecavir is superior to adefovir dipivoxil in the suppression of serum HBV DNA level. Both two drugs have poor effects on HBeAg seroconversion.
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Liu BY, Zhou PJ, Tian JR, Jiang SY. Effect of pyrogallol on the growth and pigment content of cyanobacteria-blooming toxic and nontoxic microcystis aeruginosa. Bull Environ Contam Toxicol 2007; 78:499-502. [PMID: 17618398 DOI: 10.1007/s00128-007-9096-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Accepted: 03/15/2007] [Indexed: 05/16/2023]
Affiliation(s)
- Bi-Yun Liu
- College of Resources and Environmental Sciences, Wuhan University, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan 430079, People's Republic of China
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Wang H, Liu Y, Chong K, Liu BY, Ye HC, Li ZQ, Yan F, Li GF. Earlier flowering induced by over-expression of CO gene does not accompany increase of artemisinin biosynthesis in Artemisia annua. Plant Biol (Stuttg) 2007; 9:442-6. [PMID: 17099845 DOI: 10.1055/s-2006-924634] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The early flowering gene CONSTANS (CO) from Arabidopsis thaliana was transferred into Artemisia annua using the Agrobacterium tumefaciens-mediated transformation system. The plant expression vector pBI CO was constructed by inserting the CO gene into the binary vector pBI121 under the control of CaMV 35S promoter. Analyses of PCR, PCR Southern blot, and Southern blot revealed that the transgenic plants contained the foreign CO gene. The results of RT-PCT and RT-PCR Southern blot suggested that the foreign CO gene had expressed at the transcriptional level. Although the flowering time of the CO transgenic plant was about 2 weeks earlier than that of the non-transgenic plant under short-day conditions, no significant difference in artemisinin content was found between the flowering transgenic plant and the non-flowering non-transgenic plant. These results show that the usually observed increase of artemisinin content before plant flowering under natural conditions is not a direct consequence of flowering itself, perhaps there is even no direct linkage between flowering and artemisinin biosynthesis.
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Affiliation(s)
- H Wang
- Key Laboratory of Phytosynthesis and Environmental Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Nanxincun 20#, Xiangshan, Haidian District, Beijing 100093, China
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Zhu ZG, Yu YY, Zhang Y, Ji J, Zhang J, Liu BY, Chen XH, Lu Y, Jiang HS, Bu L, Hu LD, Kong XY. Germline mutational analysis of CDH1 and pathologic features in familial cancer syndrome with diffuse gastric cancer/breast cancer proband in a Chinese family. Eur J Surg Oncol 2004; 30:531-5. [PMID: 15135482 DOI: 10.1016/j.ejso.2004.03.004] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2004] [Indexed: 01/29/2023] Open
Abstract
AIMS Hereditary non-polyposis colorectal cancer, thyroid medullary carcinoma, breast/ovarian cancer and gastric cancer/breast cancer syndrome are encountered in surgery. Some gastric cancer/breast cancer syndrome may be the result of a CDH1 germline mutation. This is the first report of CDH1 germline mutations gastric cancer/breast cancer syndrome in Chinese patients. METHODS Peripheral blood from the proband, as well as, her first and second degree relatives was collected and CDH1 gene exon 1-16 mutations were screened. E-cadherin/beta-catenin proteins expression and histopathologic features were examined on gastric cancer/breast cancer tissues from the proband. RESULTS A C-->T nucleotide substitution at exon 13 (mRNA 2200 locus, Accession number NM-004360) was found. This was a transition from GCC-->GCT in DNA sequence (Ala154Ala). Diffuse-type gastric cancer and infiltrating ductal breast carcinoma were present. Both tumours preserved E-cadherin/beta-catenin expression immunohistochemically. CONCLUSIONS Familial cancer syndrome with diffuse-type gastric cancer/breast cancer proband in Chinese has a propensity of early onset during lifespan. No truncating or splice-site CDH1 mutations had been identified in this family. A silent nucleotide variation in exon 13 of the CDH1 gene may contribute to some forms of cancer susceptibility.
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Affiliation(s)
- Z G Zhu
- Department of Surgery of Ruijin Hospital, Shanghai Institute of Digestive Surgery, Shanghai Second Medical University, Shanghai 200025, China
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Chiang CP, Hsieh RP, Chen THH, Chang YF, Liu BY, Wang JT, Sun A, Kuo MYP. High incidence of autoantibodies in Taiwanese patients with oral submucous fibrosis. J Oral Pathol Med 2002; 31:402-9. [PMID: 12165058 DOI: 10.1034/j.1600-0714.2002.00117.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Previous study has shown a high incidence of autoantibodies including antinuclear (ANA), antismooth muscle (SMA), antigastric parietal cell (GPCA), antithyroid microsomal (TMA), and antireticulin antibodies in a small group of 26 patients with oral submucous fibrosis (OSF). The reasons why some of the OSF patients have high titers of autoantibodies in serum have not been completely explained and no further study on autoantibodies in OSF patients has been done in a large group of patients. METHODS In this study, we determined the serum levels of ANA, SMA, GPCA, and TMA in a large group of 109 male Taiwanese patients with OSF by an indirect immunofluorescence technique (for ANA, SMA, and GPCA), and by a semiquantitative microtiter particle agglutination test (for TMA). The presence of serum autoantibodies in OSF patients was further correlated with patients' oral habits and the severity of OSF measured by maximum mouth opening (MMO) and sites of involvement. RESULTS We found that the frequencies of presence of serum ANA (23.9%), SMA (23.9%), and GPCA (14.7%) in OSF patients were significantly higher than those (9.2, 7.3, and 5.5%, respectively) in healthy control subjects (P < 0.01, P < 0.005, and P < 0.05, respectively). Although the frequency of presence of TMA (5.5%) in OSF patients was also greater than that (2.8%) in healthy control subjects, the difference was not significant (P > 0.05). The presence of serum GPCA in OSF patients was significantly associated with daily areca quid (AQ) consumption (P < 0.05). The presence of serum ANA in OSF patients associated with daily AQ consumption was of borderline statistical significance (P = 0.066). However, no significant correlations were demonstrated between the presence of serum autoantibodies in OSF patients and other variables of oral habits, MMO, and sites of involvement. CONCLUSION In this study, all the 109 OSF patients had AQ chewing habit and 73.4% of the OSF patients swallowed the 'juice' of AQ during the chewing process. The presence of serum GPCA and ANA in OSF patients was associated with daily consumption of AQs. AQ chewing caused mucosal microtrauma, and ulcerations facilitated the diffusion of genotoxic and cytotoxic AQ ingredients into the oral and gastric tissues. Altered autoantigens released from AQ ingredients-damaged cells may induce autoantibody production. Higher frequencies of specific HLA-DR antigens in OSF patients may also help autoantibody production. Therefore, we conclude that the high incidence of autoantibodies in OSF patients may be due to AQ chewing habit, toxic AQ ingredients, and genetic susceptibility of the OSF patients.
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Affiliation(s)
- C P Chiang
- School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC
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35
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Liu BY, Song HY. [Molecular cloning and expression of Nattokinase gene in Bacillus subtilis]. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2002; 34:338-40. [PMID: 12019448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
In order to characterize biochemically the nattokinase,the nucleotide sequence of the nattokinase gene was amplified from the chromosomal DNA of B.subtilis (natto) by PCR. The expression plasmid pBL NK was constructed and was used to transform Bacillus subtilis containing a chromosomal deletion in its subtilisin gene. The supernatant of the culture was collected after 15 h culture. The target proteins were identified by SDS-PAGE. Nattokinase was purified by a method including ultrafiltration, Sephacryl S-100 gel filtration and S-Sepharose ion-exchange chromatography, and 100 mg of purified nattokinase was obtained from one liter of culture. The purity of the protein and the specific activity were 95% and 12 000 u/mg (compared to tPA), respectively.
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Affiliation(s)
- B Y Liu
- Department of Molecular Genetics, School of Medicine, Fudan University, Shanghai 200032, China.
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36
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Abstract
Previous studies have shown that the local and systemic upregulation of inflammatory and fibrogenic cytokines and downregulation of antifibrotic cytokines are central to the pathogenesis of oral submucous fibrosis (OSF). The immunocompetent cells, especially the macrophages and lymphocytes, are likely the main source of cytokine synthesis. Therefore, this study used an immunohistochemical method to quantify the T lymphocyte, B lymphocyte and macrophage densities in the epithelium and subepithelial connective tissue of 50 specimens of moderately advanced and advanced OSF and 10 specimens of normal oral mucosa (NOM). The mean T lymphocyte, B lymphocyte and macrophage densities in OSF specimens were 555.2+/-417.4, 63.4+/-44.3 and 66.9+/-76.4 cells/mm(2) in the subepithelial connective tissue and 308.1+/-261.1, 1.4+/-3.5 and 6.6+/-11.9 cells/mm(2) in the epithelium, respectively. These findings suggest that T lymphocytes were the major immunocompetent cells in both the subepithelial connective tissue and epithelium of OSF specimens. Macrophages and B lymphocytes are the minor immunocompetent cells in the subepithelial connective tissue and are only occasionally found in the epithelium of OSF specimens. Similar distribution of immunocompetent cells was also found in NOM specimens. However, the mean T lymphocyte, B lymphocyte and macrophage densities in the subepithelial connective tissue (271.2+/-107.0, 13.3+/-18.4 and 17.3+/-19.1 cells/mm(2), respectively) and the mean T lymphocyte density in the epithelium (97.7+/-51.4) of NOM specimens were significantly lower than the corresponding mean cell densities in OSF specimens. Using frozen tissue sections, we further quantified the CD4+ and CD8+ lymphocyte numbers in eight moderately advanced or advanced OSF specimens. It was found that the CD4+ and CD8+ lymphocyte densities were 213.3+/-140.7 and 101.5+/-72.8 cells/mm(2) in the subepithelial connective tissue of OSF specimens, respectively. The CD4+ to CD8+ lymphocyte ratio was 2.1:1. Our results showed a significant increase in the number of T lymphocytes and macrophages and a predominance of CD4+ lymphocytes over CD8+ lymphocytes in the subepithelial connective tissue of OSF specimens. We conclude that the cellular immune response may play an important role in the pathogenesis of OSF.
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Affiliation(s)
- C P Chiang
- School of Dentistry, College of Medicine, National Taiwan University, No. 1, Chang-Te Street, Taipei, Taiwan
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Su JJ, Liu BY, Chang YC. Identifying an interfering factor on chemical oxygen demand (COD) determination in piggery wastewater and eliminating the factor by an indigenous Pseudomonas stutzeri strain. Lett Appl Microbiol 2001; 33:440-4. [PMID: 11737628 DOI: 10.1046/j.1472-765x.2001.01027.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/20/2022]
Abstract
AIMS This study attempted to demonstrate nitrite interference on chemical oxygen demand (COD) determination in piggery wastewater, and the capability of aerobic denitrification of the SU2 strain which is capable of promoting the efficiency of nitrogen and COD removal from piggery wastewater. METHODS AND RESULTS This study was performed in a 17-litre reactor with a 30% packing ratio, with a ratio of immobilized SU2 cells to sludge of 100:1. The ratio of aeration to nonaeration was 4 : 1.5. Removal efficiency of COD was 86.8%. Removal efficiency of BOD and SS was higher than 90%, and removal efficiency of NH4+-N and TKN was almost 100%. CONCLUSIONS NO2- -N interference is significant when its concentration in piggery wastewater exceeds 100 mg l-1. COD in piggery wastewater can be indirectly reduced following nitrite reduction by SU2 strain. SIGNIFICANCE AND IMPACT OF THE STUDY Utilizing immobilized SU2 cells in coordination with an SBR system simultaneously reduces nitrite and COD concentrations.
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Affiliation(s)
- J J Su
- Division of Applied Biology, Animal Technology Institute Taiwan, PO Box 23, Chunan, Miaoli, Taiwan, R.O.C. 35099.
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38
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Tai YS, Liu BY, Wang JT, Sun A, Kwan HW, Chiang CP. Oral administration of milk from cows immunized with human intestinal bacteria leads to significant improvements of symptoms and signs in patients with oral submucous fibrosis. J Oral Pathol Med 2001; 30:618-25. [PMID: 11722712 DOI: 10.1034/j.1600-0714.2001.301007.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Previous studies have shown that the local and systemic upregulation of fibrogenic cytokines and downregulation of antifibrotic cytokine are central to the pathogenesis of oral submucous fibrosis (OSF). The milk from cows immunized with human intestinal bacteria (immune milk) contains an anti-inflammatory component that may suppress the inflammatory reaction and modulate cytokine production. Therefore, it was decided to test whether immune milk may have some beneficial effects on controlling the symptoms and signs in OSF patients. METHODS In this preliminary study, 26 OSF patients who received immune milk treatment (45 g of immune milk powder twice a day) for 3 months and oral habit intervention were included in the experimental group. Another 20 OSF patients who received only oral habit intervention served as the control group. RESULTS We found that the interincisor distance was significantly improved (> or =3 mm of the baseline measurement) in 18 of the 26 (69.2%) OSF patients in the experimental group at exit. However, in the control group none of the OSF patients had an increase in interincisor distance greater than 2 mm. In addition, disappearance or significant improvement of symptoms at exit was observed in 80% (16/20) of the patients with intolerance to spicy foods (P < 0.001) and 72.2% (13/18) of the patients with xerostomia (P < 0.005) in the experimental group, compared with 17.6% (3/17) of the patients with improvement of intolerance to spicy foods and 15.4% (2/13) of the patients with improvement of xerostomia in the control group. Partial regression of concomitant oral leukoplakia or erythroplakia (judged from the size reduction of the lesions) at exit was noted in 71.4% (5/7) of the patients in the experimental group (P < 0.05), compared with none (0/5) of the patients with improvement in the control group. CONCLUSION We conclude that oral administration of immune milk leads to significant improvements of symptoms and signs in OSF patients.
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Affiliation(s)
- Y S Tai
- School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC
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Su JJ, Liu BY, Lin J, Yang CP. Isolation of an aerobic denitrifying bacterial strain NS-2 from the activated sludge of piggery wastewater treatment systems in Taiwan possessing denitrification under 92% oxygen atmosphere. J Appl Microbiol 2001; 91:853-60. [PMID: 11722663 DOI: 10.1046/j.1365-2672.2001.01454.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS To isolate aerobic denitrifying bacteria which will be applied to piggery wastewater treatment facilities for enhanced nitrate and nitrite removal. METHODS AND RESULTS Nitrate-supplemented basal medium in airtight, crimp-sealed serum bottles containing an atmosphere of 92% oxygen was inoculated with denitrifiers, strains NS-2 and SM-3, and incubated at 30 degrees C. After 20 h, the concentration of nitrate was decreased rapidly by both NS-2 and SM-3. Nitrite production was almost zero during the whole experimental period for both strains. Nitrogen gas production peaked at the 20 h for both NS-2 (8.20 +/- 1.03 mmol l(-1)) and SM-3 (3.93 +/- 0.16 mmol l(-1)). CONCLUSIONS Strain NS-2, which produced the highest N2 concentration in this work, was identified as Pseudomonas stutzeri. This strain is the most capable of aerobic and anaerobic conversion of nitrate to N2 without forming a nitrite intermediate. SIGNIFICANCE AND IMPACT OF THE STUDY Strain NS-2 is highly promising for future application in in situ piggery wastewater treatment.
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Affiliation(s)
- J J Su
- Department of Production Management, Pig Research Institute Taiwan, Chunan, Miaoli, ROC.
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40
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Song ZJ, Liu BY, Qian XH, Yang SC, Wei KH, Zheng YH, Ma X, Zhang HB. [The spectroscopic study of the iodine beta-cyclodextrin complexes]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:603-606. [PMID: 12945307] [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: 05/24/2023]
Abstract
In this paper, the iodine beta-cyclodextrin complexes prepared in different techniques were investigated by Fourier transformation infrared spectrum(FTIR), FT-Raman, Ultra-violet absorption spectrum in qualitative and quantitative analysis. Results showed that the iodine existed in dissociated, bundle and polymerized forms in the complexes. Contras to the method of alcohol craft, the sample prepared in water craft method included a higher capacity of iodine, but it was not stable enough to keep a constant high iodine concentration. This analysis method was simple and convenient, it is useful for quality control of the iodine beta-cyclodextrin complexes raw material medicine.
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Affiliation(s)
- Z J Song
- National Center of Biomedical Analysis, Beijing 100850, China
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41
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Sun A, Hsieh RP, Chu CT, Wang JT, Liu BY, Chiang CP. Some specific human leukocyte antigen (HLA)-DR/DQ haplotypes are more important than individual HLA-DR and -DQ phenotypes for the development of mucocutaneous type of Behçet's disease and for disease shift from recurrent aphthous stomatitis to mucocutaneous type of Behçet's disease. J Oral Pathol Med 2001; 30:402-7. [PMID: 11488417 DOI: 10.1034/j.1600-0714.2001.300704.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/23/2022]
Abstract
The phenotype and haplotype frequencies of human leukocyte antigens (HLA)-DR and -DQ in 32 Chinese patients with the mucocutaneous (MC) type of Behçet's disease (BD) were calculated and compared with those in 310 healthy control Chinese and with those in 80 Chinese patients with recurrent aphthous stomatitis (RAS). We found that the phenotype frequency of HLA-DRw8 [corrected P (Pc)<0.005] and the haplotype frequencies of HLA-DRw8/DQw1 (Pc<0.005), -DRw8/DQw5(w1) (Pc<0.0005), -DRw12(5)/DQw1 (Pc<0.005), -DRw12(5)/DQw6(w1) (Pc< 0.0005), and -DRw52/DQw1 (Pc<0.005) in patients with the MC type of BD were significantly greater than those in healthy control subjects. This finding suggests that individual Chinese with HLA-DRw8 antigen and HLA-DRw8/DQw1, -DRw8/DQw5(w1), -DRw12(5)/DQw1, -DRw12(5)/DQw6(w1) and -DRw52/DQw1 haplotypes are more likely to have the MC type of BD. Furthermore, the relative risks (RRs) of HLA-DRw8/DQw1 (5.6), -DRw8/ DQw5 (w1) (10.0), and -DRw12(5)/DQw6(w1) (14.4) haplotypes in patients with the MC type of BD were equal to or higher than the RR of HLA-DRw8 phenotype (5.6), suggesting that some of the HLA-DR/DQ haplotypes may play more important roles than the individual HLA-DR and -DQ phenotypes for the development of the MC type of BD. The phenotype frequencies of HLA-DR5 (Pc<0.01), -DRw8 (Pc<0.005) and -DQw1 (Pc<0.05) as well as the haplotype frequencies of HLA-DR5/DQw1 (P<0.005) and -DRw8/DQw1 (Pc<0.00005) in patients with the MC type of BD were significantly higher than those in patients with RAS. Moreover, the RRs of HLA-DR5/DQw1 (29.1) and -DRw8/DQw1 (47.4) haplotypes were greater than the RRs of HLA-DR5 (10.4), -DRw8 (23.4) and -DQw1 (4.0) antigens. These results suggest that some specific HLA-DR/DQ haplotypes may be more important than the individual HLA-DR and -DQ phenotypes in the disease shift from RAS to the MC type of BD.
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Affiliation(s)
- A Sun
- School of Dentistry, National Taiwan University, Taipei
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Chiang CP, Chen CH, Liu BY, Sun A, Leu JS, Wang JT. Expression of transforming growth factor-alpha in adenoid cystic carcinoma of the salivary gland. J Formos Med Assoc 2001; 100:471-7. [PMID: 11579613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
BACKGROUND Transforming growth factor-alpha (TGF-alpha) is expressed in both normal and malignant epithelial cells. Although the expression of TGF-alpha has been extensively studied in some human epithelial neoplasms, its expression in adenoid cystic carcinomas (ACCs) of the salivary gland has not been reported. METHODS This study used an immunohistochemical technique to assess the expression of TGF-alpha in 40 ACC specimens from the salivary glands, seven specimens from labial minor salivary glands adjacent to mucoceles, and five specimens from normal submandibular glands. RESULTS In the normal submandibular gland specimens, positive TGF-alpha staining was found in all ductal segments as well as in serous and some mucous acinar cells. In labial minor salivary glands adjacent to mucoceles, positive TGF-alpha staining was found in ductal, serous acinar, serous demilune, and a few mucous acinar cells. Positive TGF-alpha immunostaining was observed in all five salivary gland ACC specimens with a solid histologic pattern, and 31 of the 35 salivary gland ACC specimens with a tubulo-cribriform histologic pattern. Overall, 36 of 40 ACCs of the salivary gland expressed TGF-alpha. Positive TGF-alpha staining was found in the salivary gland ACC specimens with solid, tubular, duct-like, and pseudocystic structures. No significant correlation was found between TGF-alpha expression in ACCs of the salivary gland and age, sex, primary cancer location, TNM status, clinical stage, prognosis, histologic type, perivascular or perineural invasion, focal necrosis of the tumor, or cellular atypia. CONCLUSIONS This study demonstrated that ductal and acinar cells of the normal submandibular gland and of labial minor salivary glands adjacent to mucoceles are the major sites of TGF-alpha synthesis and secretion. Furthermore, TGF-alpha is biosynthesized in salivary gland ACC tumor cells, forming solid, tubular, duct-like, and pseudocystic structures. Our data suggest that TGF-alpha may play an important biologic role as a mitogen in the growth of salivary gland ACC.
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Affiliation(s)
- C P Chiang
- School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan
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Guo J, Lanske B, Liu BY, Divieti P, Kronenberg HM, Bringhurst FR. Signal-selectivity of parathyroid hormone (PTH)/PTH-related peptide receptor-mediated regulation of differentiation in conditionally immortalized growth-plate chondrocytes. Endocrinology 2001; 142:1260-8. [PMID: 11181543 DOI: 10.1210/endo.142.3.8001] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Type-1 PTH/PTH-related peptide receptors (PTH1Rs), which activate both adenylyl cyclase and phospholipase C (PLC), control endochondral bone development by regulating chondrocyte differentiation. To directly analyze PTH1R function in such cells, we isolated conditionally transformed clonal chondrocytic cell lines from tibial growth plates of neonatal mice heterozygous for PTH1R gene ablation. Among 104 cell lines isolated, messenger RNAs for PTH1R, collagen II, and collagen X were detected in 28%, 90%, and 29%, respectively. These cell lines were morphologically diverse. Some appeared large, rounded, and enveloped by abundant extracellular matrix; whereas others were smaller, flattened, and elongated. Two PTH1R-expressing clones showed similar PTH1R binding and cAMP responsiveness to PTH and PTH-related peptide but disparate morphologic features, characteristic of hypertrophic (hC1--5) or nonhypertrophic (nhC2--27) chondrocytes, respectively. hC1--5 cells expressed messenger RNAs for collagen II and X, alkaline phosphatase (ALP), and matrix GLA protein, whereas nhC2--27 cells expressed collagen II and Indian hedgehog but not collagen X or ALP. In hC1--5 cells, PTH and cAMP analog, but not phorbol ester, inhibited both ALP and mineralization. PTH1R-null hC1--5 subclones were isolated by in vitro selection and then reconstituted by stable transfection with wild-type PTH1Rs or mutant (DSEL) PTH1Rs defective in PLC activation. ALP and mineralization were inhibited similarly via both forms of the receptor. These results indicate that PLC activation is not required for PTH1R regulation of mineralization or ALP in hypertrophic chondrocytes and are consistent with a major role for cAMP in regulating differentiation of hypertrophic chondrocytes.
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Affiliation(s)
- J Guo
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA.
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Su JJ, Liu BY, Liu CY. Comparison of aerobic denitrification under high oxygen atmosphere by Thiosphaera pantotropha ATCC 35512 and Pseudomonas stutzeri SU2 newly isolated from the activated sludge of a piggery wastewater treatment system. J Appl Microbiol 2001; 90:457-62. [PMID: 11298242 DOI: 10.1046/j.1365-2672.2001.01265.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS This study compares the ability of Thiosphaera pantotropha ATCC 35512 and the newly isolated Pseudomonas stutzeri SU2 to perform aerobic denitrification. METHODS AND RESULTS Nitrate-supplemented basal medium in airtight crimp-sealed serum bottles containing an atmosphere of 92% oxygen was inoculated with Ps. stutzeri SU2 or T. pantotropha and incubated at 30 degrees C. During the 92-h incubation period, aerobic denitrification by Ps. stutzeri SU2 (NO3(-) - N removal 99.24%) was more efficient than that by T. pantotropha (NO3(-) - N removal 27.29%). CONCLUSION Pseudomonas stutzeri SU2, which was isolated from the activated sludge of a sequencing batch reactor treating piggery wastewater, rapidly reduced the nitrate to nitrogen gas without nitrite accumulation. The nitrate removal rate of SU2 was 0.032 mmol NO3(-) - N g cell-1 h-1 after 44 h incubation. SIGNIFICANCE AND IMPACT OF THE STUDY Pseudomonas stutzeri SU2 can be used in a full-scale sequencing batch system for efficient in situ aerobic nitrate removal from piggery wastewater.
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Affiliation(s)
- J J Su
- Department of Production Management, Pig Research Institute Taiwan, Chunan, Miaoli, Taiwan, ROC.
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Abstract
Changes in major components and microbes in tea fungus broth (or kombucha; teakwass) prepared from nine different sources during a prolonged fermentation of up to 60 days were investigated. Cell concentrations of both yeasts and acetic acid bacteria in broth were generally higher than those in the cellulosic pellicles. The residual sucrose concentration decreased linearly with time, although the rate fell after the first month. Metabolic fates of glucose and fructose produced as a result of the hydrolysis of sucrose were different. Glucose was not produced in parallel with fructose (0.085 g 100 ml(-1) d(-1)) but was produced with a lower initial rate (0.041 g 100 ml(-1) d(-1)). Both titratable acidity and gluconic acid increased steadily with time for all samples, although gluconic acid was not generated for 6 days until the fermentation had begun. Acetic acid increased slowly to a maximum value of 1.1 g 100 ml(-1) after 30 days; thereafter, it decreased gradually. Gluconic acid contributed to the titratable acidity and thus, the taste of tea fungus broth, during the final stage of fermentation. It is concluded that the desired quality or composition of kombucha can be obtained through the proper control of fermentation time.
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Affiliation(s)
- C Chen
- Department of Food Science, National Chung-Hsing University, Taichung, Taiwan, ROC.
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46
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Sun A, Chu CT, Liu BY, Wang JT, Leu JS, Chiang CP. Expression of interleukin-2 receptor by activated peripheral blood lymphocytes upregulated by the plasma level of interleukin-2 in patients with recurrent aphthous ulcers. Proc Natl Sci Counc Repub China B 2000; 24:116-22. [PMID: 10943944] [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: 02/17/2023]
Abstract
This study used flow cytometry to determine the peripheral blood lymphocyte subsets and a sandwich enzyme immunoassay to measure the plasma levels of interleukin-2 (IL-2) and soluble IL-2 receptor (sIL-2R) in 34 patients in different stages of recurrent aphthous ulcers (RAU) and in 32 age/sex-matched normal control subjects. In the exacerbation stage of RAU, a significant increase in the percentages of CD3+ (p < 0.001), CD4+ (p < 0.001), CD4+ IL-2R+ (p < 0.001), CD8+ IL-2R+ (p < 0.01) and IL-2R+ cells (p < 0.001), in the CD4+/CD8+ (p < 0.01) and CD4+/CD3+ CD8+ ratios (p < 0.01), and in the plasma level of IL-2 (p < 0.001) was found in the patients as compared with the levels in the normal control subjects. However, in the post-exacerbation stage of RAU, there was a significant decrease in the percentage of CD4+ cells (p < 0.05) and in the CD4+/CD8+ (p < 0.01) and CD4+/CD3+ CD8+ ratios (p < 0.001), as well as a significant increase in CD8+ cells (p < 0.001) in the patients, as compared with the levels in the normal control subjects. Because the CD4+, CD4+ IL-2R+ and CD8+ IL-2R+ cell counts and the plasma level of IL-2 increased simultaneously in the patients in the exacerbation stage of RAU, we suggest that the markedly increased plasma level of IL-2 may have been secreted by the increased number of activated CD4+ cells, and that the expression of IL-2R by activated peripheral blood lymphocytes was upregulated by the plasma level of IL-2 in patients with RAU. In addition, the increase and then decrease of the CD4+/CD8+ ratio in the RAU patients and the increased number of CD4+ IL-2R+ and CD8+ IL-2R+ activated T cells in the RAU patients support the role of cell-mediated cytotoxicity in the immunopathogenesis of RAU.
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Affiliation(s)
- A Sun
- School of Dentistry, College of Medicine, National Taiwan University, Taipei, ROC
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47
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Chiang CP, Lang MJ, Liu BY, Wang JT, Leu JS, Hahn LJ, Kuo MY. Expression of proliferating cell nuclear antigen (PCNA) in oral submucous fibrosis, oral epithelial hyperkeratosis and oral epithelial dysplasia in Taiwan. Oral Oncol 2000; 36:353-9. [PMID: 10899674 DOI: 10.1016/s1368-8375(00)00014-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
To test whether the oral epithelia of oral submucous fibrosis (OSF), epithelial hyperkeratosis (EH) and epithelial dysplasia (ED) may have increased proliferative activity under the long-term exposure to areca quid ingredients and whether there is an increased expression of proliferating cell nuclear antigen (PCNA) in oral premalignant lesions with disease progression, we used an immunohistochemical technique with the mouse monoclonal antibody PC10 to investigate PCNA expression in histologic sections of OSF, EH, ED and normal oral mucosa (NOM). Positive PCNA staining was found mainly in basal and parabasal epithelial cells in all specimens of OSF, EH, ED and NOM. The mean PCNA labeling indices (LI) in NOM, OSF, EH and ED were 8.8+/-2.7%, 22.1+/-12.5%, 25.5+/-5. 2% and 44.9+/-15.4%, respectively. Significant differences in the PCNA LI were noted between NOM and OSF (P<0.01), EH (P<0.001) or ED (P<0.001), as well as between ED and OSF (P<0.001) or EH (P<0.01). The gradual increase of PCNA expression with the morphologic transformation of normal epithelial cells into dysplastic epithelial cells suggests that there is increased proliferative activity in oral premalignant lesions with disease progression. However, no significant correlation was found between PCNA LI in OSF epithelium and the clinicohistologic parameters of OSF. In addition, the mean PCNA LI of p53-positive OSF cases (23.7+/-12.0%) was very close to that of p53-negative OSF cases (23.9+/-13.1%), suggesting that there was no association between PCNA and p53 expression in OSF.
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Affiliation(s)
- C P Chiang
- School of Dentistry, College of Medicine, National Taiwan University, 1 Chang-Te Street, ROC, Taipei 100, Taiwan
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48
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Niu WZ, Gao YL, Liu P, Liu BY, Ye G. A comparison of calcitonin gene-related peptide effects on coronary flow and cardiac conduction system in the guinea pig. Sheng Li Xue Bao 2000; 52:259-62. [PMID: 11956577] [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: 02/24/2023]
Abstract
The purpose of this study was to examine the effects of calcitonin gene-related peptide (CGRP) on coronary flow and various parts of cardiac conduction system (CCS) in the isolated guinea pig heart by recording the cardiac electrogram and His bundle activity simultaneously. The coronary flow (CF) was measured and the right atrium was paced at incremental frequencies periodically. Perfusing heart with CGRP at the concentrations of 3 30 nmol/L increased CF strikingly and dose-dependently. CGRP (30 nmol/L) caused a moderate and significant increase in the spontaneous heart rate, but failed to influence the atrioventricular nodal and His bundle-Purkinje fiber conduction time and the longest atrial pacing cycle length inducing 3 2 Wenckebach and 2 1 AV nodal conduction. The results indicate that CGRP in the guinea pig heart might act mainly on coronary vessels and then the sinus node, but did not affect the conductivity and refractoriness of the AV conduction system.
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Affiliation(s)
- W Z Niu
- Department of Cardiovascular Physiology, Capital University of Medical Sciences, Beijing 100054.
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49
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Guo LF, Niu WZ, Jiao XH, Liu BY. [Electrophysiological effects of calcitonin gene-related peptide on isolated sinoatrial node of the rabbit]. Sheng Li Xue Bao 2000; 52:163-6. [PMID: 11961589] [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: 02/24/2023]
Abstract
The purpose of this study was to investigate the electrophysiological effects of calcitonin gene-related peptide (CGRP) on the pacemaker cell of rabbit sinoatrial node (SAN) and to determine whether I(Ca) is involved in the effects. Action potentials (AP) were recorded from the isolated SAN with microelectrode technique. It was found: (1) CGRP (1 nmol/L) had no effect on AP configuration; CGRP (10 nmol/L) increased the maximal diastolic potential, AP amplitude and depolarization velocity of 0 and 4 phases, and decreased sinus cycle length and AP duration. After applying CGRP for 20 min the above effects reached to a maximum. (2) CGRP (100 nmol/L) caused arrhythmia in the SAN. (3) Calcium channel antagonists, CdCl2 and verapamil attenuated the electrophysiological changes in AP of SAN induced by CGRP (20 nmol/L). The results indicate that a calcium-dependent mechanism may underlie the CGRP effects.
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Affiliation(s)
- L F Guo
- Department of Cardiovascular Physiology, Capital University of Medical Science, Beijing 100054, China
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50
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Sun A, Hsieh RP, Liu BY, Wang JT, Leu JS, Wu YC, Chiang CP. Strong association of antiepithelial cell antibodies with HLA-DR3 or DR7 phenotype in patients with recurrent oral ulcers. J Formos Med Assoc 2000; 99:290-4. [PMID: 10870311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Previous studies showed that antiepithelial cell antibodies (anti-ECA) were present in 71% (15/21) of patients with recurrent oral ulcers (ROU) and that there was a strong association of human leukocyte antigen (HLA)-DRw9 with ROU in Chinese patients. In this study, we assessed anti-ECA in a larger group of Chinese patients with ROU (n = 88) in order to further investigate the association of anti-ECA with HLA-DR and -DQ antigens. METHODS The anti-ECA in the sera of ROU patients were detected by an indirect immunofluorescence technique with rat esophagus as the substrate, and the HLA-DR and -DQ antigens in ROU patients were typed by a standard microcytotoxicity assay using Terasaki's oriental tray. RESULTS The rate of anti-ECA positivity was significantly higher (p < 0.0001) in ROU patients (68%) than in healthy control subjects (0%). Furthermore, the rate of anti-ECA positivity in patients with major or minor oral ulcers (72%) was significantly higher (29%) than that in patients with herpetiform ulcers (p < 0.05). There was a significant increase in the frequency of DR3 or DR7 antigen expression (p < 0.0001, pc [p corrected] < 0.001, relative risk [RR] = 4.3, etiologic fraction = 0.41) in anti-ECA-positive ROU patients compared with the corresponding frequencies in healthy control subjects. There was also a significant increase in the frequency of DR7 or DRw9 antigen expression (p < 0.005, pc < 0.05, RR = 4.7, etiologic fraction = 0.45) compared to healthy controls. CONCLUSIONS Because only DR3 or DR7 antigen occurred more frequently in anti-ECA-positive than in anti-ECA-negative ROU patients (p < 0.0007, pc < 0.05, RR = 19.6, etiologic fraction = 0.51), we concluded that the gene coding for DR3 or DR7 antigen may contribute to the presence of anti-ECA in Chinese patients with ROU.
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Affiliation(s)
- A Sun
- School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan
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