نتایج جستجو برای: hbv diagnosis

تعداد نتایج: 479902  

Journal: :Journal of Phytomedicine and Therapeutics 2023

Hepatitis B virus (HBV) DNA diagnosis plays a critical role in the transmission of HBV infections. Accurate protocols detection will reduce spread from blood donors. Therefore, this research compared detecting potentials three different detection. Blood 200 donors at University college bank Ibadan were sampled and tested for using ABON™ HBsAg Surface Antigen Tests (strip test), Monolisa TM ULTR...

2013
Bui Tien Sy Boris A. Ratsch Nguyen Linh Toan Le Huu Song Christian Wollboldt Agnes Bryniok Hung Minh Nguyen Hoang Van Luong Thirumalaisamy P. Velavan Heiner Wedemeyer Peter G. Kremsner C.-Thomas Bock

BACKGROUND Hepatitis D virus (HDV) infection is considered to cause more severe hepatitis than hepatitis B virus (HBV) monoinfection. With more than 9.5 million HBV-infected people, Vietnam will face an enormous health burden. The prevalence of HDV in Vietnamese HBsAg-positive patients is speculative. Therefore, we assessed the prevalence of HDV in Vietnamese patients, determined the HDV-genoty...

Journal: :iranian journal of public health 0
m norouzi sa ghorashi f abedi a nejatizadeh b ataei r malekzadeh

background: hepatitis b virus (hbv) gene and protein variations are frequently been seen in chronic patients. the aims of study were to determine the genotypes as well as the patterns of variations distribution in chronically-infected patients from the central part of iran. methods: the surface gene was amplified, sequenced and subsequently aligned using international and national iranian datab...

Journal: :iranian journal of basic medical sciences 0
mehdi norouzi iranian national institute for genetic engineering and biotechnology, tehran, iran seyed ali ghorashi iranian national institute for genetic engineering and biotechnology, tehran, iran behrooz ataei infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran majid yaran infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran reza malekzadeh digestive disease research center, shariati hospital, tehran, iran seyed moayyed alavian baqiyatallah university of medical sciences, baqiyatallah research centre for gastroenterology and liver disease, tehran, iran

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 acid...

Journal: :Gut microbes 2021

The gut microbiota in the hepatitis B virus related acute-on-chronic liver failure (HBV-ACLF) is poorly defined. We aim to uncover characteristics of HBV-ACLF and other HBV associated pathologies. analyzed microbiome patients with or pathologies healthy individuals by 16S rRNA sequencing metagenomic fecal samples. 212 HBV-ACLF, 252 chronic (CHB), 162 HBV-associated cirrhosis (HBV-LC) 877 were r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1390

مطالعات بیشتر بیان نموده اند که ---- باعث ایجاد موتاسیون g to a-در ژنوم hbvمی گردد که حاصل آن حذف آنتی ژن hbeو کاهش hbv-dnaدر پلاسما می باشد.درهر حال به نظر می رسد که مکانیسم عملکرد a3gجلوگیری از بسته بندی hbv-dna در داخل ذرات ویروسی باشد.(4).همچنین xu et al پیشنهاد نموده است که apobec3 دآمینازها دارای نقشی در سرطانزایی hccاز طریق ایجاد موتاسیون ها در hbx(ناحیه همپوشان باbcp ) می باشند(5). علی...

Journal: :HIV medicine 2005
M Nelson G Matthews M G Brook J Main

(1) All HIV-positive patients should have serum markers for hepatitis B checked (HBsAg, anti-HBc and/or antiHBs) tests within a month of diagnosis [II]. (2) All those negative for hepatitis B markers should be immunized and anti-HBs checked at 12 weeks. Patients failing to respond to a conventional course of 20 mg vaccine should received booster doses and/or a repeat vaccination cycle with the ...

2015

HBs protein is encoded by the pre-S and S genome, and the detection of HBs antigen (HBsAg) in sera is an initial step for the diagnosis of hepatitis B virus (HBV) infection. The “a” determinant region (amino acid residues 124–147) is the main epitope for inducing a protective immune response. Mutations in the “a” determinant region, known as escape mutants, affect antigenicity and hinder attemp...

Journal: :Enfermedades infecciosas y microbiologia clinica 2008
Francisco Rodríguez-Frias Rosendo Jardi

The hepatitis B virus (HBV) belongs to the hepadnavirus family. The genome of the virus, formed by a small DNA molecule with 3,200 base pairs, has 4 strongly overlapping protein coding regions: ORF preS/S, corresponding to the envelope proteins that constitute the HBV surface antigen (HBsAg); ORF preC/C, which encodes the viral capsid component (core antigen or HBcAg) and a non-structural prote...

Journal: :Journal of viral hepatitis 2011
K L B Reddick R Jhaveri M Gandhi A H James G K Swamy

The aim of this study was to examine the contribution of hepatitis B virus (HBV) and hepatitis C virus (HCV) to pregnancy-related complications including gestational diabetes mellitus (GDM), preterm birth (PTB), intrauterine growth restriction (IUGR), pre-eclampsia, antepartum haemorrhage and cholestasis. The Nationwide Inpatient Sample was queried for all pregnancy-related discharges, pregnanc...

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