background it is important to differentiate whether isolated anti-hbc is due to false positive results or the prior exposure to hepatitis b virus, because individuals with false-positive anti-hbc can benefit from vaccination and their blood can be safely transfused. to distinguish between these two conditions, we evaluated the serologic response to hepatitis b vaccine. methods ninety subjects w...

background and objective: presence of hepatitis b core antibody (anti-hbc) in the absence of hepatitis b surface antigen (hbsag) and hepatitis b surface antibody (anti-hbs) is defined, as isolated anti-hbc. little is known about the clinical significance of the isolated anti-hbc in hepatitis b virus (hbv) infections. the aim of this study was to assess the significance of anti-hbc as the only m...

introduction: intravenous drug users as a serious health problem in communities have economical and social effects as well as health and hygienic complications. viral infections may be transmitted through drug injection by shared syringes among users. the aim of this study has been to determine the relative frequency of hbv, hcv and hiv infection’s markers as epidemiological data in ahvaz. mate...

DNA coding for the core antigen from hepatitis B Virus (HBcAg) was amplified, cloned and propagated in E. coli. The core protein was expressed in E. coli and the product was readily detected by Western blot. This protein can be used as a diagnostic material in serum screening tests. To increase the level of expression of this antigen in bacteria, two plasmids were constructed in which the gene ...

dna coding for the core antigen from hepatitis b virus (hbcag) was amplified, cloned and propagated in e. coli. the core protein was expressed in e. coli and the product was readily detected by western blot. this protein can be used as a diagnostic material in serum screening tests. to increase the level of expression of this antigen in bacteria, two plasmids were constructed in which the gene ...

  Background and Objective: Presence of hepatitis B core antibody (anti-HBc) in the absence of hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (anti-HBs) is defined, as isolated anti-HBc. little is known about the clinical significance of the isolated anti-HBc in hepatitis B virus (HBV) infections. The aim of this study was to assess the significance of anti-HBc as the onl...

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...

conclusions in hbeag positive chb patients, low serum hbsag level is a useful predictor of compensated cirrhosis. objectives the aim of our study was to evaluate serum hbsag level as a biomarker for compensated cirrhosis in hepatitis b e antigen (hbeag) positive chb patients. patients and methods two-hundred and one hbeag-positive chinese chb patients with or without cirrhosis were enrolled in ...

conclusions chaharmahal and bakhtiari province could be categorized as a low endemic region for hepatitis b infection, with a seroprevalence similar to that in other provinces of western iran. vaccination seems to influence its decrease, especially in adolescents and youth. more surveillance and attention to risk factors are suggested to identify high-risk groups and to implement vaccination. r...