نتایج جستجو برای: hbv
تعداد نتایج: 13835 فیلتر نتایج به سال:
Occult hepatitis B virus (HBV) infection is defined as the detection of HBV deoxyribonucleic acid (DNA) in the serum or liver tissue of individuals who test negative for hepatitis B surface antigen (HBsAg). We undertook a prospective study to evaluate the significance and course of occult HBV in patients with hepatitis C virus (HCV) cirrhosis undergoing orthotopic liver transplantation (OLT). A...
زمینه و هدف: ccr5 یکی از مهمترین گیرنده های کموکاینی است که در فراخواندن سلول های ایمنی اختصاصی (نظیر: سلول های t سایتوتوکسیک و سلول های nk) ضد ویروسی به کبد نقش دارد. ccr5-?32 و (c/t) ccr5-59353دو پلی مرفیسم بسیار مهم در ژن ccr5 هستند و در برخی مطالعات گزارش گردیده که ممکن است با پاکسازی و یا تداوم عفونت مزمن hbv مرتبط باشند. لذا این مطالعه جهت بررسی دو پلی مرفیسم مذکور در بیماران ایرانی با هد...
conclusions genotype d was the main genotype detected in romanian patients with chronic hbv infection. genotype d presented both bcp and pc mutations more frequently. results we detected two hbv genotypes; a (8.1%) and d (60.5%), and a mixture of genotypes a and d (31.4%) (p < 0.001). basal core promoter (bcp) a1762t/g1764a and precore (pc) g1896a mutations were detected in these romanian patie...
OBJECTIVE Current guidelines advise to vaccinate every hepatitis B virus (HBV)-susceptible HIV patient against HBV until sufficient antibody titers have been reached. However, in this era of combination antiretroviral therapy (cART), acute HBV infection rarely occurs in patients who lack this immune protection. We analyzed whether HBV-active cART (lamivudine, emtricitabine, tenofovir) might wor...
BACKGROUND Sequential addition of tenofovir disoproxil fumarate (TDF) is often needed for patients coinfected with HIV and hepatitis B virus (HBV) who develop HBV resistance to lamivudine after combination antiretroviral therapy (cART) containing only lamivudine for HBV. We aimed to assess the virological response of HBV to add-on TDF in patients coinfected with lamivudine-resistant HBV. METH...
Background and purpose: Hepatitis B virus (HBV) is a major global health problem. The prevalence of HBV infection varies throughout regions of the world. More than 350 million people live with chronic HBV infection and many different clinical symptoms are associated with it. Long-term complications of HBV infection lead to cirrhosis of the liver and hepatocellular carcinoma. Consequently, 0.5-1...
OBJECTIVE Current data on the prevalence of occult hepatitis B virus (HBV) infection in HIV-positive individuals conflict. As occult HBV infection could have an impact on the outcome of liver disease in HIV-positive patients, we investigated a large number of HIV-positive/HBV-surface-antigen (HBsAg) negative subjects with hepatitis C virus (HCV) infection by using the 'gold standard' approach f...
Hepatitis B virus (HBV)-specific T-cell responses are important in the natural history of HBV infection. The number of known HBV-specific T-cell epitopes is limited, and it is not clear whether viral evolution occurs in chronic HBV infection. We aimed to identify novel HBV T-cell epitopes by examining the relationship between HBV sequence variation and the human leukocyte antigen (HLA) type in ...
Chronic hepatitis B virus (HBV) infection affects millions of people worldwide and about a half million people die every year. India represents the second largest pool of chronic HBV infection worldwide with an estimated 40 million infected people. The prevalence of chronic HBV infection in pregnant women is shown to be 0.82 per cent with the risk of mother-to-child vertical transmission. Hepat...
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