نتایج جستجو برای: hbv infection
تعداد نتایج: 463075 فیلتر نتایج به سال:
background and objective: although hepatitis b vaccine immunogenicity is high, certain risk factors such as age, tobacco consumption, obesity and genetic background have been associated with low responsiveness to hbv vaccine. we aimed to evaluate the role of occult hepatitis b virus (hbv) infection in non-responder adults to hbv vaccine in a low endemic area for hbv. material and methods : a to...
Background: The risk of infection by transfusion-transmitted viruses has been reduced remarkably. However, a zero-risk blood supply is still desirable. The screening for antibody to HBc (anti-HBc) has been shown as an alternative test for the detection of HBV infection. Objective: The main aim of this study was to evaluate HBV infection markers and the potential value of anti-HBc testing of blo...
Introduction: Occurrence of detectable amounts of viral antigen or viral particles in the blood of infected patients with Hepatitis B virus (HBV) is a significant characteristic of HBV infection. Detection of HBV antigen or its DNA among individuals of a community is a crucial factor to know the burden of HBV infection. Hepatitis B surface antigen (HBsAg) is a suitable marker of HBV infection b...
Introduction: In recent years with introduction of better screening tests, the risk of infection with transfusion-transmitted viruses has been reduced remarkably, although obtaining a zero-risk blood supply still remains international blood transfusion services goal. The routine test for detection of HBV infected blood samples is examination of HBsAg with ELISA method but in occult HBV infectio...
Background: Blood transfusion plays a great role in public health and the blood safety still has remained a main concern. HBV has been considered as one of the most prevalent blood borne infections. It is estimated that chronic HBV affects 350-400 million people worldwide. Comprehensive knowledge about HBV has high importance in Iran due to high number of blood dependent patients. Material ...
Background and Objectives: Hepatitis B virus (HBV) infection is a major public health problem worldwide. Islamic Republic of Iran is located in mesoendemic region (prevalence 2%-7%). The aim of this study was to assess prevalence of chronic HBV in Iran according to demographic characteristics. Methods: Medline, Embase, Science Citation Index Expanded, Ovid, Google Scholar, IranMedex, SID, Ma...
Background: In patients who are hepatitis B virus (HBV) DNA-positive, but HBV surface antigen (HBsAg) -negative, the infection is referred to as occult hepatitis B infection (OBI). Occult HBV infection is harmful when other liver diseases are present, and can aggravate liver damage in in patients with chronic liver diseases. In human immunodeficiency virus (HIV) infection the suppression of vir...
Hemophilia is the most common congenital coagulative disorder which exposes the patients to many problems because of lack of coagulative factors, higher risk of viral infections and other complications. This study was designed to detect the prevalence of hepatitis B and C infection in hemophiliac patients referring to Kerman Samenalhojaj Center. For this purpose, 97 hemophiliac patients were st...
background: ccr5 is a receptor for ccl3 (mip-1 α), ccl4 (mip-1 α) and ccl5 (regulated on activation normal t cell expressed and secreted (rantes)) and play important roles in recruitment of nk cells to the hbv infected liver. objectives: the main purpose of this study was to investigate the expression levels of ccr5 on the nk cells and also serum levels of rantes in chronic hbv infected (chi) p...
Background and Aims: chronic HBV infection is one of the most common viral infections in worldwide which many factors such as genetic factors are involved in pathogenesis of disease. Gamma interferon (IFN-γ) and its receptor (INFGR) play a critical role in the immune response to HBV infection. Single nucleotide polymorphisms (SNPs) are effective on level of gene expression, The aim of thi...
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