Prevalence of Hepatitis B Surface Antigen Among People Attending Medical Diagnostic Laboratories in Neyshabur, Northeast of Iran, During Years 2011 to 2015

Prevalence of Hepatitis B Surface Antigen and Associated Risk Factors with Hepatitis B Infection among Pregnant Women in Northeast of Iran

Background and Aims: Almost 350 million people worldwide are carriers of hepatitis B virus. The rate of chronic carriers in Iran is about 3%.  Therefore Iran is categorized as a country with moderate rate of infection with this virus. In developing countries, transmission from mother to fetus and newborn is considered as one of the main routes of transmission. So, this study investigated t...

Hepatitis B Surface Antigen Prevalence among Pregnant Women in Rafsanjan City, Iran, 2003

The Prevalence of Hepatitis B Surface Antigen (HBsAg) and its Influencing Factors in Pregnant Women Referring to Healthcare Centers of Dehloran, Iran in 2011-2012

Background & aim: Hepatitis B virus (HBV) infection is a major global health concern. According to the statistics, the prevalence of this infection is moderate in Iran. Pregnant mothers, who are infected with the virus (virus carriers), can transmit the infection to their fetus. This study aimed to determine the prevalence of hepatitis B surface antigen (HBsAg) and its influencing factors in pr...

Prevalence of hepatitis D virus infection in hepatitis B surface antigen-positive subjects in Golestan province, northeast Iran.

BACKGROUND AND PURPOSE Hepatitis D virus (HDV) is a defective RNA virus dependent on hepatitis B virus (HBV) infection for its replication and expression. It is known that coexistent infection with HDV tends to aggravate the course of HBV-associated liver disease. This study was carried out to determine the seroprevalence of HDV among hepatitis B surface antigen (HBsAg)-positive individuals in ...

EXPRESSION OF HEPATITIS B SURFACE ANTIGEN IN SACCHAROMYCES CEREVISIAE

The genome of HB V virus of serotype ayw cloned in pBR322 and expression shuttle vector p YES2 were used for construction of the HBsAg chimeric genes and their expression in Saccharomyces cerevisiae. Two recombinant plasmids were constructed. One of them contained the coding sequences for the major polypeptide of surface antigen. Another construct carried the major polypeptide with the pre-S2 a...