منابع مشابه
Hepatitis B virus S gene escape mutants
Hepatitis B virus (HBV) can be classified into nine immunological subtypes or eight genotypes. The most prevalent genotypes in Asia are genotypes B and C. HBV is transmitted parenteraly and can produce either asymptomatic or symptomatic disease. Although the consequences of acute hepatitis B can be severe, serious sequelae are associated with chronic infections. HBV seroprevalence ranges from i...
متن کاملReported Series Resolution Took Hepatitis B Virus "escape" Mutants
days, and about 5-20% of patients still required laparotomy. 3 What is the prognosis after an ectopic pregnancy? Among 55 American women treated by salpingectomy or salpingostomy and followed up for three to 41 months 30 became pregnant again: 24 pregnancies were intrauterine and six were repeat ectopics.32 In a four to eight year follow up of 110 Finnish women (42 treated by conservative surge...
متن کاملs gene mutants occurrence among hepatitis b carriers in malaysia
conclusions association with sex, genotype and clinical symptoms revealed that the pre-s1 orf deletion occurred in 40% , 40%,and 20% of genotypes b,c, and d respectively, and 80% of the female population, of which all but one were diagnosed with chronic hepatitis b. additionally, several mutations were found in the bcp region with the following incidence rate; c1653 t (8.6%), a1752 g (10.8%),17...
متن کاملNaturally occurring escape mutants of hepatitis B virus with various mutations in the S gene in carriers seropositive for antibody to hepatitis B surface antigen.
Hepatitis B virus (HBV) DNA was extracted from sera of six carriers with hepatitis B e antigen as well as antibody to hepatitis B surface antigen and sequenced within the pre-S regions and the S gene. HBV DNA clones from five of these carriers had point mutations in the S gene, resulting in conversion from Ile-126 or Thr-126 of the wild-type virus to Ser-126 or Asn-126 in three carriers and con...
متن کاملS Gene Mutants Occurrence Among Hepatitis B Carriers in Malaysia
BACKGROUND The S gene region of the hepatitis B virus (HBV) codes for surface antigen (HBs Ag) and is responsible for classification of HBV strains. OBJECTIVES The current study aimed to identify important mutations in the S gene in Hepatitis B virus (HBV) isolated from Malaysian HBV carriers. MATERIALS AND METHODS Isolated HBV DNAs were subjected for PCR amplification and sequencing of HBV...
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ژورنال
عنوان ژورنال: Asian Journal of Transfusion Science
سال: 2007
ISSN: 0973-6247
DOI: 10.4103/0973-6247.33445