نتایج جستجو برای: hepatitis b virus antibodies

تعداد نتایج: 1366824  

Journal: :Journal of virology 1987
K C Cheng B Moss

Selective synthesis in mammalian cells of the hepatitis B virus middle surface (MS) protein, which is 55 amino acids longer than the major surface (S) protein, was achieved by using a recombinant vaccinia virus. The 33-kilodalton MS polypeptide was glycosylated and secreted as particles that resembled human hepatitis B surface antigen as well as particles composed solely of S protein with regar...

Abstract Background and Objectives Use of kits with high sensitivity and specificity to determine the prevalence of antibodies against hepatitis B virus (anti-HBc) core antigen is important. The aim of this study was to determine the prevalence of hepatitis B virus antibody in HBsAg negative blood donors using two anti-HBc enzyme immunoassay kits (DIA.PRO and SIEMENS).   Materials and Methods...

Journal: :American family physician 2010
Nguyet-Cam Vu Lam Patricia B Gotsch Robert C Langan

Family physicians encounter diagnostic and treatment issues when caring for pregnant women with hepatitis B or C and their newborns. When hepatitis B virus is perinatally acquired, an infant has approximately a 90 percent chance of becoming a chronic carrier and, when chronically infected, has a 15 to 25 percent risk of dying in adulthood from cirrhosis or liver cancer. However, early identific...

Journal: :Journal of virology 2008
Keigo Machida Yasuteru Kondo Jeffrey Y Huang Yung-Chia Chen Kevin T-H Cheng Zhenyong Keck Steven Foung Jean Dubuisson Vicky M-H Sung Michael M C Lai

Hepatitis C virus (HCV) often causes persistent infection despite the presence of neutralizing antibodies against the virus in the sera of hepatitis C patients. HCV infects both hepatocytes and B cells through the binding of its envelope glycoprotein E2 to CD81, the putative viral receptor. Previously, we have shown that E2-CD81 interaction induces hypermutation of heavy-chain immunoglobulin (V...

Journal: :Journal of virology 1986
M Q Klinkert L Theilmann E Pfaff H Schaller

The presence of the two "large" surface proteins of hepatitis B virus (HBV), P39 and GP42 of pre-S1-hepatitis B surface antigen, was assayed in the serum of an experimentally infected chimpanzee by using antibodies to a pre-S1-specific fusion protein synthesized in Escherichia coli. The immune response to pre-S1-hepatitis B surface antigen was monitored by using the pre-S1 fusion protein as an ...

Journal: :Masker Medika 2023

Introduction: Anti-HBs (Anti HepatitisLBLsurface) is an antibodyLto hepatitisLB that arises from the administration of hepatitis B vaccine. Hospital employees areLat high riskLof contracting virus, because they often have direct contact with patients, body fluids and medical equipment infected. ThisLstudy aims to determine presence antibodies in Ciamis after three years vaccination. Method: use...

Abolfazl Khedive Alireza Namazi Behrooz Ataei Majid Yaran Mehdi Norouzi, Mohammad Ali Judaki Ramin Rahimnia Reza Malekzadeh, Seyed Ali Ghorashi Seyed Moayyed Alavian Seyed Mohammad Jazayeri, Shiva Ghamari

Objective(s) The aim of this study was to characterize the hepatitis B virus surface protein genotypes and sequence variations among hepatitis B virus surface antigen (HBsAg) positive chronic patients in Hormozgan province, south of Iran. Materials and Methods A total of 8 patients enrolled in this study. The surface gene was amplified and directly sequenced. Genotypes and nucleotide/amino a...

Journal: :BMJ 1990
M J Porteous

OBJECTIVE To assess the precautions being taken by orthopaedic surgeons to avoid becoming infected with HIV or hepatitis B virus by their patients during surgery. DESIGN Pilot study of 50 surgeons selected at random followed by a postal questionnaire completed anonymously. SUBJECTS All 1220 fellows and associates of the British Orthopaedic Association working in the United Kingdom. RESULT...

MAHNAZ KAVARI, NADER COHAN, SEDIEGHEH AMINI, SHAHRAM SAMIEI, TAHEREH ZANDIEH, ZAHRA ATAEI,

 ABSTRACT Background: Hepatitis B virus (HBV) infection in patients who lack detectable hepatitis B surface antigen (HBsAg) is called occult hepatitis B infection. Such infections have been frequently identified in patients with chronic hepatitis Cliver disease, but their prevalence is not known. Methods: 207 patients with chronic hepatitis C who were HCV -RNA and antiHCV positive were stu...

Journal: :jundishapur journal of microbiology 0
seyed moayed alavian baqiyatallah wo{wersit{eoveefosaoasw{ooouw~onowyya~elli~erewmswc{esmnwwunorfoovrognveso}owylmol lowu{tememmlasadra ave, vanak sq. p.o.box: 14155-3651, tehran, ir iran., ir iran +98-2188067114, alavian@thc.ir seyed vahid tabatabaei university of muenster, st. marien hospital gmbh, gastroenterology clinic, germany samad nourizad kermanshah university of medical sciences, ir iran feyzollah mansouri kermanshah university of medical sciences, ir iran nahid khademi kermanshah university of medical sciences, ir iran sedigheh amini kafi-abad iranian blood transfusion organization research center, ir iran

background hepatitis b virus (hbv) infection is a major public health problem that affects billions of people worldwide. the lack of information on hbv prevalence among the general population is an obstacle to formulate effective policies to reduce the burden of viral hepatitis. objectives this population based serological survey was conducted in kermanshah province to determine the local preva...

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