نتایج جستجو برای: occult hepatitis

تعداد نتایج: 136332  

Journal: :Annals of hepatology 2013
Andrea M M Fontenele Natalino Salgado Filho Adalgisa S P Ferreira

The hepatitis B virus (HBV) is one of the most frequently transmitted agents in dialysis units. Occult hepatitis B is characterized by HBV infection without detectable surface antigen (HBsAg) in the patient's serum, a positive or negative HBV DNA marker result in the serum and a positive result in the liver tissue, which leads to the potential risk of transmission during renal replacement thera...

Alireza Saadat Gholam Ali Ghorbani, Gholamreza Toogeh Morteza Izadi, Nematollah Jonaidi, Yasser Hossienzadeh

Introduction: The hepatitis B virus (HBV) is one health problem in Iran. Occult hepatitis B (OBI) is diagnosed by the detection of HBV DNA in the serum or liver tissue of patients for whom other serology, especially HBsAg and HBcAg, are negative. The current study aimed to determine the prevalence of OBI in patients who refer for chemotherapy. Methods: Al...

سلمان روغنی, حسن ,

Introduction: There are multiple reports of Acute Hepatitis B after blood transfusion inspite of good screening for Hepatitis B before transfusion. Therefore, occult hepatitis B is a serious concern for Blood transfusion. There is a lot of evidence that positive HBCAb in seronegative HBSAg blood donors is associated with occult Hepatitis B. Aim: Evaluation of the prevalence of HBCAb in seroneg...

2014
Cory M. Fielding Paul Angulo

OBJECTIVE To describe the etiology of hepatitis and identify occult hepatitis B virus (HBV) infection. CLINICAL PRESENTATION AND INTERVENTION A 40-year-old man presented with severe abdominal pain and jaundice, a history of acute HBV infection that had cleared as well as the use of acetaminophen, methamphetamine, buprenorphine and marijuana. He admitted to having had unprotected sex with mult...

Journal: :Pakistan Journal of Medical and Health Sciences 2023

Hepatitis C is the major source of cirrhosis, HCC and chronic liver disease one reasons for transplant remain undiagnosed in large number high-risk populations. Objectives: To assess frequency occult hepatitis virus infection spouses positive patients. Place Duration: This Cross-sectional study was held clinic gastroenterology ward Lady Reading Hospital, Peshawar from 21st September 2020 till 2...

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2011
Fernando Herz Wolff Sandra Costa Fuchs Ajacio B M Brandão

BACKGROUND Occult hepatitis B virus (HBV) infection is characterized by the detection of HBV DNA in serum and/or in liver in the absence of detectable hepatitis B surface antigen (HBsAg). The reported prevalence of occult hepatitis B varies markedly among populations and according to the sensitivity of the HBV DNA assay. The aim of the present study was to describe the prevalence of occult hepa...

2011
Amitis Ramezani Mohammad Banifazl Arezoo Aghakhani

We greatly enjoyed reading the excellent review by Hollinger and colleagues on occult hepatitis B infection in chronic hemodialysis (HD) patients (1). As Hollinger et al. mentioned in their review, few studies have shown the prevalence of occult hepatitis B virus (HBV) infection in HD patients. Due to the parenteral transmission of HBV, HD patients are at high risk of acquiring this virus becau...

2014
Manoochehr Makvandi Niloofar Neisi Davod Khalafkhany Kamyar Makvandi Eskandar Hajiani Ali Akbar Shayesteh Abdolrahim Masjedi Zadeh Amir Hosein Sina Mojtaba Hamidifard Mojtaba Rasti Ehsan Aryan Kambiz Ahmadi Mohammad Jafar Yad Yad

BACKGROUND The occult hepatitis B infection (OBI) is defined as the presence of hepatitis B virus (HBV) DNA in the sera or in the liver biopsy and the absence of hepatitis B surface antigen (HBsAg) by serological test. OBJECTIVES The current study aimed to evaluate the occult HBV infection by polymerase chain reaction (PCR) and determine HBV genotyping among the patients with abnormal alanine...

Journal: :Clinical and vaccine immunology : CVI 2007
Juan A Quiroga Inmaculada Castillo Javier Bartolomé Vicente Carreño

Antibody responses to the GOR autoepitope are frequently detected among anti-hepatitis C virus (anti-HCV)-positive patients with chronic hepatitis. Sera from 110 anti-HCV-negative patients with occult HCV infection, as diagnosed by detection of HCV RNA in hepatic tissue, were investigated for GOR antibody reactivity. A positive test for anti-GOR immunoglobulin G (IgG) was found for 22 (20%) of ...

2015
Nastaran Ansari Manochehr Makvandi Ali Reza Samarbaf-Zadeh

BACKGROUND Hepatitis B virus (HBV) infection is a worldwide public health problem. Nine HBV genotypes (A-I) have been already discovered. HBV genotypes are important both in the clinical manifestation of disease and treatment response. Moreover, HBV DNA without HBs (Hepatitis B surface)-antigenemia was detected in some patients with chronic hepatitis (occult hepatitis). There is little informat...

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