Osong Public Health and Research Perspectives

Articles

Seroepidemiology of Hepatitis A Infection in Northeastern China, Korea, and Japan: Haesun Yun, Hyeok-Jin Lee, Youngsil Yoon, Kisang Kim, Sungsoo Kim, Myung-Hee Shin, Miyuki Taniguchi, Soo Ryang Kim, Mi Kyung Kim; Osong Public Health Res Perspect. 2012;3(1):31-35. Published online December 31, 2011; DOI: https://doi.org/10.1016/j.phrp.2012.01.005

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Objectives
The epidemiological patterns of endemic hepatitis A virus (HAV) are unclear in northeastern Asia depending on the ethnicity of the country in question. The purpose of this study was to investigate the seroprevalence of HAV in northeastern China, South Korea, and Japan.
Methods
A total of 1,500 serum samples were collected from five groups of inhabitants (300 each) who were over 40 years of age (Korean Chinese, indigenous Chinese, South Korean, Korean living in Japan, and indigenous Japanese). The samples were screened for antibodies to HAV using an enzyme-linked immunosorbent assay.
Results
Positivity for HAV antibodies was 93.7% (95% confidence interval [CI]: 90.9–96.4) in Koreans living in northeastern China, 99.7% (95% CI: 99.0–100.3) in indigenous Chinese, 98.0% (95% CI: 96.4–99.6) in indigenous Koreans, 33.3% (95% CI: 28.0–38.7) in Koreans living in Japan, and 20.4% (95% CI: 15.8–25.0) in indigenous Japanese persons. The overall anti-HAV prevalence was not significantly different between northeastern China and South Korea, but it was different in Japan.
Conclusions
These results indicate that differences in seroprevalence can be attributed to geological, environmental, and socioeconomic conditions rather than ethnicity.

Citations

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Prevalence of Anti-Hav IgG Antibodies in the Population of the Łódź Macroregion by Age Group
Gabriela Henrykowska, Kornelia Kotecka, Aleksandra Jabłkowska, Andrzej Buczyński, Joanna Woźny
Polish Hyperbaric Research.2021; 76(3): 67. CrossRef
Sero-prevalence of viral hepatitis A in a district of Sri Lanka: a community based cross-sectional study
Nalin Ariyarathna, Chrishantha Abeysena
BMC Infectious Diseases.2019;[Epub] CrossRef
Seroprevalence of Hepatitis A among Children and Young Adults Residing in Tehran, Iran: Implication for HAV Vaccination
Amitis Ramezani, Mohammad Reza Aghasadeghi, Setareh Mamishi, Shahram Sabeti, Farahnaz Bidari - Zerehpoosh, Mohammad Banifazl, Anahita Bavand, Sahar Shadanlou, Arezoo Aghakhani
Hepatitis Monthly.2018;[Epub] CrossRef
Seroepidemiology of Hepatitis Viruses and Hepatitis B Genotypes of Female Marriage Immigrants in Korea
Jae-Cheol Kwon, Hye Young Chang, Oh Young Kwon, Ji Hoon Park, In Soo Oh, Hyung Joon Kim, Jun Hyung Lee, Ha-Jung Roh, Hyun Woong Lee
Yonsei Medical Journal.2018; 59(9): 1072. CrossRef
Seroprevalence of Helicobacter pylori and Hepatitis A Virus among Children in Rural Central Taiwan
Meng-Che Wu, Chia-Hsing Sung, Yu-Chuan Chang, Chi-Lin Ho, Chih-Chiang Wu, Kuei-Hua Wu, Chun-Yi Lee, Kuen-Der Yang
Japanese Journal of Infectious Diseases.2015; 68(6): 494. CrossRef

Cyclophilin A Cpr1 Protein Modulates the Response of Antioxidant Molecules to Menadione-induced Oxidative Stress in Saccharomyces cerevisiae KNU5377Y: Il-Sup Kim, Haesun Yun, Ingnyol Jin, Ho-Sung Yoon; Osong Public Health Res Perspect. 2011;2(3):171-177. Published online December 31, 2011; DOI: https://doi.org/10.1016/j.phrp.2011.11.041

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Abstract PDF: Objectives
The cellular function of cyclophilin A (CypA) differs between organisms, even though CypA is conserved in both prokaryotes and eukaryotes. The purpose of this study was to elucidate the role of activated CypA isoform CPR1 in the antioxidative mechanisms of Saccharomyces cerevisiae under menadione (MD)-induced oxidative stress.
Methods
Four S. cerevisiae strains, KNU5377Y (kwt) and BY4741 (bwt), and their isogenic cpr1⊿ mutant strains (kc1 and bc1), were treated with MD, at a concentration ranging between 0.25 and 0.4 mM. Cpr1-mediated antioxidative effects were analyzed by measuring the levels of cellular glutathione (GSH) and ascorbate (AsA)-like molecules in yeast.
Results
GSH and AsA-like reductant molecule concentrations were more reduced in the presence of MD in the kc1 strain than in the kwt strain; whereas, there was no significant difference between the bwt and bc1 strains under the same conditions. In kc1 strain samples, we observed a reduction in the expression of proteins related both to GSH synthesis and the recycling system, and simultaneously, downregulation of GSH synthetase and GSH reductase activities were also evident. Oxidative stress in the kc1 strain was alleviated by the application of the GSH and AsA analog.
Conclusion
These results indicate that activated Cpr1 modulates the response of antioxidant molecules involved in cellular redox homeostasis of KNU5377Y during oxidative stress induced by MD.

Original Article

Seroprevalence of Hepatitis A and E Viruses Based on the Third Korea National Health and Nutrition Survey in Korea: Haesun Yun, Hyeok-Jin Lee, Doosung Cheon, Chaeshin Chu, Kyung Won Oh, Young Taek Kim, Youngmee Jee; Osong Public Health Res Perspect. 2011;2(1):46-50. Published online June 30, 2011; DOI: https://doi.org/10.1016/j.phrp.2011.04.009

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Abstract PDF

Objectives
The purpose of this study was to investigate the seroprevalence of hepatitis A virus (HAV) and hepatitis E virus (HEV) in Korea during 2005.
Methods
Study subjects were selected from across Korea using a stratified multistage probability sampling design, and HAV and HEV seroprevalence was compared on the basis of sex, age, and residency. A total of 497 rural and urban people aged 10–99 years of age (mean ± SD age = 28.87 ± 17.63 years) were selected by two-stage cluster sampling and tested serologically for anti-HAV and anti-HEV IgG using an enzyme-linked immunosorbent assay.
Results
Among this population, the overall seroprevalence of HAV was 63.80% (55.21% aged in their 20s and 95.92% in their 30s, p < 0.01) and that of HEV was 9.40% (5.21% aged in their 20s and 7.14% in their 30s, p < 0.01). Seroprevalence also varied according to area of residence. HEV prevalence in rural areas was higher than that of urban regions based on the anti-HEV antibody, odds ratio 3.22 (95% confidence interval: 1.46–7.10, p < 0.01). There were no significant differences between male and female against anti-HAV/HEV antibodies.
Conclusion
Our study suggested that the seropositive rates of HAV and HEV might be related to age and environmental conditions.

Citations

Citations to this article as recorded by

Factors associated with anti-hepatitis A virus immunoglobulin G seropositivity among Korean workers: a cross-sectional study
Eunchan Mun, Yesung Lee, Byungseong Suh, Wonsul Kim, Jinsook Jeong, Hwanjin Park, Woncheol Lee, Boksoon Han, Soyoung Park, Changhwan Lee
BMJ Open.2020; 10(6): e036727. CrossRef
Seroprevalence and risk factors of hepatitis E virus infection among the Korean, Manchu, Mongol, and Han ethnic groups in Eastern and Northeastern China
Yanan Cai, Si-Yuan Qin, Aidong Qian, Peng Xu, Ying-Tian Xu, Lin-Hong Xie, Quan Zhao, Xiao-Xuan Zhang
Journal of Medical Virology.2017; 89(11): 1988. CrossRef
Hepatitis E virus exposure in pregnant women in rural Durango, Mexico
Cosme Alvarado-Esquivel, Luis F. Sánchez-Anguiano, Jesús Hernández-Tinoco
Annals of Hepatology.2014; 13(5): 510. CrossRef
Epidemiologic Study on Hepatitis A Virus Seroprevalence in Busan
Kyung-Soon Cho, So-Hyun Park
Korean Journal of Clinical Laboratory Science.2014; 46(1): 17. CrossRef
A Systematic Review of Hepatitis E Virus Infection in Children
V. P. Verghese, J. L. Robinson
Clinical Infectious Diseases.2014; 59(5): 689. CrossRef
Hepatitis E Virus (HEV) Seroprevalence in the general population of the Republic of Korea in 2007–2009: a nationwide cross-sectional study
Youngsil Yoon, Hye Sook Jeong, Haesun Yun, Hyeokjin Lee, Yoo-Sung Hwang, Bohyun Park, Chae Jin Lee, Sangwon Lee, Ji-Yeon Hyeon
BMC Infectious Diseases.2014;[Epub] CrossRef
The Road Less Traveled
Chaeshin Chu
Osong Public Health and Research Perspectives.2011; 2(1): 1. CrossRef

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