نتایج جستجو برای: occult hepatitis b surface antigen

تعداد نتایج: 1660740  

Journal: :avicenna journal of clinical microbiology and infection 0
mohammad mahdi majzoobi brucellosis research center, hamadan university of medical sciences, hamadan, iran seyyed hamid hashemi brucellosis research center, hamadan university of medical sciences, hamadan, iran; brucellosis research center, hamadan university of medical sciences, hamadan, iran. tel: +98-8138272154, fax: +98-8138272154 hosein mahjoob department of epidemiology and statistics, hamadan university of medical sciences, hamadan, iran saeid khakizadeh department of pathology, hamadan university of medical sciences, hamadan, iran mina nikbakht consult center for hiv, hamadan university of medical sciences, hamadan, iran

conclusions the significant number of coinfected hiv-hcv patients only had hbcab positive test without detectable hbv-dna. further studies for detection of hbv-dna in both serum and liver biopsy specimens may help clarify the impact of hbv infection in coinfected hiv/hcv patients. results of 103 hiv-hcv coinfected patients, both hbsag and hbcab were positive in 7 patients (6.8%), negative in 44...

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2008
Ruth Nogueira Cordeiro Moraes Jardim Neiva Sellan Lopes Gonçales Josiane Silveira Felix Pereira Viviane Cristina Fais Fernando Lopes Gonçales Junior

Occult hepatitis B infection is characterized by hepatitis B virus (HBV) DNA in the serum in the absence of hepatitis B surface antigen (HBsAg). We assessed occult HBV infection prevalence in two groups of immunocompromised patients (maintenance hemodialysis patients and HIV-positive patients) presenting HBsAg-negative and anti-HBc positive serological patterns, co-infected or not by HCV. Thirt...

Journal: :Journal of Gandhara medical and dental sciences 2023

OBJECTIVES The objective of this study was to find the frequency occult hepatitis B in patients presenting with Decompensated chronic liver disease. METHODOLOGY This descriptive, cross-sectional conducted at a tertiary care hospital Peshawar-KP from 31st December 2021 May 2022.143 were enrolled. Informed consent taken all who enrolled study. We included aged 18-60 years either gender. All admit...

2017
George Gachara Tshifhiwa Magoro Lufuno Mavhandu Emmaculate Lum Helen K. Kimbi Roland N. Ndip Pascal O. Bessong

PURPOSE Occult hepatitis B infection (OBI) among HIV positive patients varies widely in different geographic regions. We undertook a study to determine the prevalence of occult hepatitis B infection among HIV infected individuals visiting a health facility in South West Cameroon and characterized occult HBV strains based on sequence analyses. METHODS Plasma samples (n = 337), which previously...

Journal: :Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society 2008
Kirti Shetty Munira Hussain Lei Nei K Rajender Reddy Anna S F Lok

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...

Journal: :acta medica iranica 0
seyed ahmad seyedalinaghi iranian research center for hiv/aids (ircha), tehran university of medical sciences, tehran, iran. parastoo kheirandish iranian research center for hiv/aids (ircha), tehran university of medical sciences, tehran, iran. nazli karami iranian research center for hiv/aids (ircha), tehran university of medical sciences, tehran, iran. sepehr salem urology research center, sina hospital, school of medicine, tehran university of medical sciences, tehran, iran. hadi shirzad research center-head quarter of police force medicine, tehran, iran. mohammad reza jahani department of medicine, baghiyat-allah university of medical sciences, tehran, iran.

we measured the prevalence of hbv surface antigen (hbsag) among male injection drug users (idus) in detention, tehran, iran. a cross-sectional survey included 499 male idus arrested by police during a predetermined police sweep in tehran (february, 2006). a questionnaire was filled out for each individual. blood specimens were collected for hbsag testing. prevalence of hbsag was 5.8% (95% ci 3....

Journal: :Hepatology 2001
H S Conjeevaram A S Lok

Recovery from an acute hepatitis B virus (HBV) infection is associated with loss of HBV DNA from serum, hepatitis B e antigen seroconversion, hepatitis B surface antigen (HBsAg) seroconversion, and normalization of serum aminotransferases. These changes generally imply clearance of virus, but clinical observations have shown that reactivation of HBV infection can occur either spontaneously or a...

Journal: :jundishapur journal of microbiology 0
nematollah jonaidi-jafari health research center, baqiyatallah university of medical sciences, tehran, ir iran mohammad saeid rezaee-zavareh student research committee, baqiyatallah university of medical sciences, tehran, ir iran; baqiyatallah research center for gastroenterology and liver (brcgl) diseases, baqiyatallah university of medical sciences, tehran, ir iran; middle east liver diseases center (meld), tehran, ir iran; student research committee, baqiyatallah research center for gastroenterology and liver (brcgl) diseases, baqiyatallah university of medical sciences, tehran, ir iran. tel: +98-2188945186, fax: +98-2188945188 javad tavallaei-nosratabadi health research center, baqiyatallah university of medical sciences, tehran, ir iran reza ajudani student research committee, baqiyatallah university of medical sciences, tehran, ir iran mahdi ramezani-binabaj student research committee, baqiyatallah university of medical sciences, tehran, ir iran hamidreza karimi-sari student research committee, baqiyatallah university of medical sciences, tehran, ir iran; baqiyatallah research center for gastroenterology and liver (brcgl) diseases, baqiyatallah university of medical sciences, tehran, ir iran; middle east liver diseases center (meld), tehran, ir iran

conclusions based on our results, it seems that there were no cases of obi among chronic hcv-infected patients with thalassemia and bleeding disorders, particularly hemophilia. however, to improve decisions concerning obi screening, especially in transfusion centers, and concerning the use of comprehensive screening methods, more original studies with more precise laboratory techniques and larg...

2015
Hong Kim Bum-Joon Kim Tatsuo Kanda

Occult hepatitis B virus infection (HBV) is characterized by HBV DNA positivity but HBV surface antigen (HBsAg) negativity. Occult HBV infection is associated with a risk of HBV transmission through blood transfusion, hemodialysis, and liver transplantation. Furthermore, occult HBV infection contributes to the development of cirrhosis and hepatocellular carcinoma. We recently reported the chara...

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