Results 21 to 30 of about 11,481 (179)

Occult hepatitis B infection: an evolutionary scenario [PDF]

Virology Journal, 2008
Occult or latent hepatitis B virus (HBV) infection is defined as infection with detectable HBV DNA and undetectable surface antigen (HBsAg) in patients' blood. The cause of an overt HBV infection becoming an occult one is unknown. To gain insight into the mechanism of the development of occult infection, we compared the full-length HBV genome from a ...
van Hemert, Formijn J., Zaaijer, Hans L., Berkhout, Ben, Lukashov, Vladimir V.   +3 more
openaire   +3 more sources

Prevalence and Molecular Analysis of Occult Hepatitis B Virus Infection Isolated in a Sample of Cryptogenic Cirrhosis Patients in Iran

Oman Medical Journal, 2014
Objectives: The aims of this study are to investigate the prevalence of occult hepatitis B virus infection among patients with cryptogenic cirrhosis and to analyze the relationship between surface protein variability and occult hepatitis B virus ...
Fatemeh Akhavan Anvari, Seyed Moayyed Alavian, Mehdi Norouzi, Mostafa Mahabadi, Seyed Mohammad Jazayeri   +4 more
doaj   +1 more source

Detection of HBV Genotypes of Tumor Tissues and Serum by A Fluorescence Polarization Assay in North-Western China's Hepatocellular Carcinoma Patients

Virology Journal, 2011
Background The understanding of the distribution of hepatitis B virus genotypes and the occult hepatitis B virus infection in hepatocellular carcinoma may shed light into the prevention and treatment of hepatocellular carcinoma.
Liang Ping, Wang Xiangling, Li Ding, Cheng Hong, Wu Zhiqun, Gong Weidong, Lu Jianguo, Zhang Ju   +7 more
doaj   +1 more source

Frequency of Occult Hepatitis B in Pregnant Women Attending Antenatal Care Unit of a Tertiary Care Hospital

Proceedings, 2021
Introduction: Occult infections (OBIs) caused by hepatitis B virus (HBV) are detected by the presence of HBV DNA without surface antigens. The prevalence of HBsAg in general population of Pakistan is around 3%, but there is no data regarding the ...
Sameen Bint Ali, Mateen Izhar, Chetan Lal, Asma Yaqoob, Hadiqa tul Hafsa, Asma Akram   +5 more
doaj   +1 more source

Occult hepatitis B virus infection

World Journal of Hepatology, 2014
Occult hepatitis B virus (HBV) infection (OBI) refers to the presence of HBV DNA in the absence of detectable hepatitis B surface antigen. Since OBI was first described in the late 1970s, there has been increasing interest in this topic. The prevalence of OBI varies according to the different endemicity of HBV infection, cohort characteristics, and ...
Min-Sun, Kwak, Yoon Jun, Kim
openaire   +2 more sources

Occult Hepatitis B (OBH) in Clinical Settings [PDF]

Hepatitis Monthly, 2012
Occult hepatitis B (OHB), or persistent HBV DNA in patients who are hepatitis B surface antigen (HBsAg) negative, is a recently recognized entity. In an attempt to summarize the issues, this review presents an overview of the current proposed hypothesis on the clinical relevance and also updates the knowledge on the classification of OHB in different ...
Alavian, Seyed Moayed, Miri, Seyed Mohammad, Hollinger, F. Blaine, Jazayeri, Seyed Mohammad   +3 more
openaire   +2 more sources

Hepatic Pseudolymphoma with an Occult Hepatitis B Virus Infection

Internal Medicine, 2018
A 49-year-old woman who was asymptomatic was found to have a small liver tumor on abdominal ultrasonography (US) at her annual health checkup. US revealed a hypoechoic, solid, mass measuring 17-mm in size in segment 6. The tumor markers associated with liver malignancy were negative.
Kunimoto, Hideo, Morihara, Daisuke, Nakane, Shin-ichiro, Tanaka, Takashi, Yokoyama, Keiji, Anan, Akira, Takeyama, Yasuaki, Irie, Makoto, Shakado, Satoshi, Noritomi, Tomoaki, Takeshita, Morishige, Yoshimitsu, Kengo, Sakisaka, Shotaro   +12 more
openaire   +3 more sources

Epidemiology of occult hepatitis B and C in Africa: A systematic review and meta-analysis

Journal of Infection and Public Health, 2022
Background: Occult hepatitis B (OBI) and C (OCI) infections lead to hepatic crises including cases of liver cirrhosis and even hepatocellular carcinoma (HCC). OBI and OCI also pose a significant problem of their transmissibility.
Juliette Laure Ndzie Ondigui, Sebastien Kenmoe, Cyprien Kengne-Ndé, Jean Thierry Ebogo-Belobo, Guy Roussel Takuissu, Raoul Kenfack-Momo, Donatien Serge Mbaga, Serges Tchatchouang, Josiane Kenfack-Zanguim, Robertine Lontuo Fogang, Elisabeth Zeuko'o Menkem, Ginette Irma Kame-Ngasse, Jeannette Nina Magoudjou-Pekam, Arnol Bowo-Ngandji, Nadège Mafopa Goumkwa, Seraphine Nkie Esemu, Lucy Ndip, Sara Honorine Riwom Essama, Judith Torimiro   +18 more
doaj   +1 more source

Occult hepatitis B virus infection among injecting drug users in the Central-West Region of Brazil

Memorias do Instituto Oswaldo Cruz, 2013
The prevalence of occult hepatitis B virus (HBV) infection was investigated in 149 hepatitis B surface antigen (HBsAg) negative injecting drug users (IDUs) in the Central-West Region of Brazil.
Márcia Alves Dias de Matos, Renata Carneiro Ferreira, Fabiana Perez Rodrigues, Tamíris Augusto Marinho, Carmen Luci Rodrigues Lopes, Antônia Carlos Magalhães Novais, Ana Rita Coimbra Motta-Castro, Sheila Araújo Teles, Francisco José Dutra Souto, Regina Maria Bringel Martins   +9 more
doaj   +3 more sources

Hepatitis B Blood Donor Screening Data: An Under-Recognized Resource for Canadian Public Health Surveillance

Viruses, 2023
Hepatitis B surveillance is essential to achieving Canada’s goal of eliminating hepatitis B by 2030. Hepatitis B rates, association of infection with vaccine age-eligibility, and risk factors were analyzed among 1,401,603 first-time Canadian blood donors
Sheila F. O’Brien, Cassandra N. Reedman, Carla Osiowy, Shelly Bolotin, Qi-Long Yi, Lillian Lourenço, Antoine Lewin, Mawuena Binka, Niamh Caffrey, Steven J. Drews   +9 more
doaj   +1 more source