نتایج جستجو برای: hepatitis b surface antigen
تعداد نتایج: 1652506 فیلتر نتایج به سال:
Abstract Background: Naturally occurred hepatitis B virus (HBV) with surface mutations in a variety of chronic hepatitis B (CHB) patients who have received no vaccine or HBIG bearing substitutions in surface protein, have been reported. Objectives: Current knowledge concerning the prevalence of these naturally occurring surface antigen mutations among Iranian carriers is limited. Patients and M...
Tree squirrel hepatitis B virus (THBV)-associated particles isolated from the livers of naturally infected animals share one or more antigenic determinants with hepatitis B surface antigen in solid-phase immunoassays. Characterization of THBV-associated polypeptides by sodium dodecyl sulfate/polyacrylamide gel electrophoresis reproducibly demonstrated major components with apparent sizes of 15....
context 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 clinical settings. evidence acquisit...
To elucidate the role of p53 mutation in hepatocarcinogenesis in Taiwan, a hepatitis B viral infection hyperendemic area, exons 5 to 8 of the p53 gene in the tumor tissue of 61 hepatocellular carcinomas were amplified and sequenced. A total of 20 cases (32.8%) were found to have mutations; 36.6% (15 of 41) for the hepatitis B surface antigen positive group and 25.0% (5 of 20) for the hepatitis ...
Three patients at various stages of remission from leukemia died following the development of massive liver necrosis within only 4-6 days. All had either hepatitis B surface antigen or antibody in their sera, and two of them experienced severe epigastric pain before the onset of liver injury. Hepatitis B surface antigen appeared in two of these patients after remission from leukemia. Serum gamm...
The purpose of this study was to evaluate the influence of hepatitis B vaccination on the results of surface antigen tests in blood donors. In this research, eighteen non-immunized volunteers (ten male, eight female) aged 21 to 58 years received 20 ug of the recombinant B vaccine (Heberbiovac-HB) intramuscularly. Blood samples were drawn from all volunteers before the first vaccine dose (day 0)...
Perinatal transmission of hepatitis B virus is the infection of infants at birth by mothers who are positive for hepatitis B surface antigen. Around 85% of babies born to mothers who are also positive for hepatitis B e antigen become infected. Immunoprophylaxis initiated shortly after birth— that is, after exposure to the virus—can prevent perinatal transmission. Passive prophylaxis with hepati...
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