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Tsai PC, Huang CI, Yeh ML, Huang CF, Hsieh MH, Yang JF, Hsu PY, Liang PC, Lin YH, Jang TY, Hsieh MY, Dai CY, Lin ZY, Chen SC, Huang JF, Yu ML, Chuang WL, Chang WY. Significant amelioration of hepatitis C virus infection in a hyperendemic area: longitudinal evidence from the COMPACT Study in Taiwan. BMJ Open 2021; 11:e042861. [PMID: 33722868 PMCID: PMC7959235 DOI: 10.1136/bmjopen-2020-042861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES Hepatitis C virus (HCV) infection is the leading cause of cirrhosis and hepatocellular carcinoma worldwide. Tzukuan, located in the southwestern area of Taiwan, is an HCV hyperendemic area (>30%). This study aimed to assess the changing epidemiological characteristics of HCV infection and to evaluate the long-term outcomes after the implementation of public health strategies for two decades. DESIGN A population-based retrospective cohort study. SETTING A comprehensive care programme was implemented, namely COMPACT Study, in Tzukuan since 1997. PARTICIPANTS A total of 10 714 residents participated the screening. OUTCOME MEASURES The HCV status, demographic and clinical profiles of the participants were recorded and validated annually from 2000 through 2019. RESULTS The HCV infection prevalence rates were 21.1% (1076/5099) in 2000-2004, 18.8% (239/1269) in 2005-2009, 14.1% (292/2071) in 2010-2014 and 10.3% (234/2275) in 2015-2019 (p for trend test <0.0001). Among them, 1614 underwent repeated tests during the follow-up period. The annual incidence rates were 0.54% in 2005-2009, 0.4% in 2010-2014 and 0.22% in 2015-2019, respectively (p=0.01). In addition to old age, lower education level was a major risk factor for HCV infection across different periods. HCV infection prevalence rate among those illiterates reached 40.9%, followed by 28.5% in those with elementary school level, and <10% in those with high school or higher levels. The major risk factor has shifted from iatrogenic exposure in 2000-2009 to household transmission after 2010. CONCLUSIONS HCV infection has been decreasing and the epidemiological features are changing in the hyperendemic area by continuing education, prevention and treatment strategies.
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Affiliation(s)
- Pei-Chien Tsai
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-I Huang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Lun Yeh
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chung-Feng Huang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Meng-Hsuan Hsieh
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Preventive Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Jeng-Fu Yang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Preventive Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Po-Yao Hsu
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Po-Cheng Liang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yi-Hung Lin
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Tyng Yuan Jang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Yen Hsieh
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chia-Yen Dai
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Zu-Yau Lin
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shinn-Chern Chen
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jee-Fu Huang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Centre for Liquid Biopsy and Cancer Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Lung Yu
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Centre for Liquid Biopsy and Cancer Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wan-Long Chuang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Internal Medicine,College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Yu Chang
- Hepatobiliary Division and Hepatitis Centre, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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Abstract
BACKGROUND Interleukin (IL)-33 is involved in the Th2 immune response and could play an essential role in nasal allergy. Therefore, we aimed to investigate the therapeutic potential of anti-IL-33 for allergic rhinitis (AR). METHODS Twenty-four BALB/c mice were used. In group A (control group, n = 6), mice were sensitized and challenged with saline. Group B [ovalbumin (OVA) group, n = 6] mice received intraperitoneal and intranasal OVA challenge. In group C (control IgG group, n = 6), mice were injected intraperitoneally with rabbit control IgG before OVA challenge. In group D (anti-IL-33 group, n = 6), anti-IL-33 was injected before challenge. We evaluated the number of nose-scratching events and external morphology; serum total and OVA-specific IgE; number of eosinophils, neutrophils, and lymphocytes in bronchoalveolar lavage (BAL) fluid; histopathologic examination of nasal cavity; and IL-4, IL-5, and IL-13 in BAL fluid. RESULTS Anti-IL-33 treatment significantly reduced the nose-scratching events and ameliorated skin denudation. Serum total and OVA-specific IgE was significantly decreased in group D. The number of eosinophils in BAL fluid was also significantly decreased. Eosinophilic infiltration in the nasal cavity was significantly decreased in group D. IL-4, IL-5, and IL-13 in BAL fluid were also significantly decreased after treatment. CONCLUSIONS Anti-IL-33 antibody has a therapeutic potential for experimental AR.
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Affiliation(s)
- Y H Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Inha University College of Medicine, Incheon, Korea
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Yun YS, Min YG, Rhee CS, Jung IH, Koh YY, Jang TY, Jung DH. Effects of alpha-toxin of Staphylococcus aureus on the ciliary activity and ultrastructure of human nasal ciliated epithelial cells. Laryngoscope 1999; 109:2021-4. [PMID: 10591367 DOI: 10.1097/00005537-199912000-00024] [Citation(s) in RCA: 16] [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] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The in vitro effects of staphylococcal alpha-toxin on ciliary activity were investigated at different concentrations and exposure times. STUDY DESIGN Ciliated epithelial cells of the sphenoid sinus were taken from patients operated on for pituitary tumors. Video-computerized analysis technique and transmission electron microscopy were used to analyze the effects of the toxin on ciliary activity. METHODS Ciliary beat frequency (CBF) was measured in four different concentrations of alpha-toxin including 0.1, 1, 10, and 50 microg/mL. CBF was measured at 2, 4, 6, 12, 24, and 48 hours after administration of the toxin. To observe reversibility of the reduced ciliary activity, after 24-hour incubation in the media containing 10 microg/mL of alpha-toxin, the media were replaced with alpha-toxin-free media. The tissues were also processed for transmission electron microscopy to observe ultrastructural changes of the epithelial cells. RESULTS CBF increased significantly at 2-hour incubation and then decreased significantly after 12-hour incubation in 10 microg/mL of alpha-toxin (P< .05, repeated-measures ANOVA). The transmission electron microscopic findings showed mitochondrial swelling and a slight protrusion of the plasma membrane of the cilia. In toxin-free media, loss of ciliary activity was not recovered. CONCLUSIONS CBF increased at first, but with increasing incubation time ciliary movements decreased gradually and stopped eventually. This loss of CBF may be an irreversible change associated with ultrastructural changes in the mitochondria and the plasma membrane of the cilia.
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Affiliation(s)
- Y S Yun
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Inha University, Inchon, Korea
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