Medical Laboratory Journal

fa Mutations in the Basal Core Promoter and Precore/Core Regions of Hepatitis B Virus in Patients Co-Infected With Human Immunodeficiency Virus تحقيقي Original Paper <div> ABSTRACT          Background and objectives: Globally, about one third of the population has been infected with Hepatitis B virus (HBV) and more than 400 million people have become chronically infected. Nearly, 20-25% of all carriers develop serious liver diseases such as cirrhosis, chronic hepatitis and hepatocellular carcinoma (HCC). According to the World Health Organization, HBV infection causes more than one million deaths every year. Co-infection with Human Immunodeficiency virus (HIV) and HBV is common, since both viruses have the same routes of transmission. Approximately 10 -15% of HIV-infected individuals develop chronic hepatitis B. The risk of liver diseases-related deaths is also higher in the co-infected patients. According to previous studies, mutation of the pre-core (PC) and basal-core promoter (BCP) regions may play an important role in development of HBV-related HCC and severe liver disease. The aim of this study was to investigate mutations in the BCP, PC and core regions of HBV in HIV-positive patients.           Methods: DNA was extracted using commercial kits to determine the BCP, PC/core mutations in 124 HIV/HBV co-infected patients (32.4% female and 67.6% male). Polymerase chain reaction (PCR) was performed using specific primers. The positive PCR products were subjected to automated sequencing. Then, nucleotide sequences were aligned with the standard hepatitis B sequence [Gene bank, accession number: AB033559] for mutation detection and analysis.           Results: In this study, three patients (8.1%) were HBeAg-positive and all of them were HBsAg-positive. The mean of CD4 cell count was 120 cells/mL. The mean age of the patients was 36.16 years. The important pathological mutations in HBV patients including 1752A (73%), 1773C (70.3%), 1753C (10.8%), 1896A (8.1%) and 1762T/1764A (2.7%) were detected in this study.          Conclusion: Identification of mutations in co-infected patients is of greater importance compared to mono-infected patients, because it can be useful for prediction of HCC-related mutations. Co-infection with HIV has important effects on the natural history of HBV infection, and creates different mutational patterns compared to mono-infected patients.            Keywords: HBV, HIV, Mutation. </div> HBV, HIV, Mutation, 32 39 http://mlj.goums.ac.ir/browse.php?a_code=A-10-1-412&slc_lang=fa&sid=1 Ahmad Hosseinzadeh Adli 100319475328460011087 100319475328460011087 No Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran Chiman Karami 100319475328460011088 100319475328460011088 No Department of Microbiology, Golestan University of Medical Sciences, Gorgan, Iran Sareh Zhand 100319475328460011089 100319475328460011089 No Department of Biotechology, Golestan University of Medical Sciences, Gorgan, Iran Reza Talei 100319475328460011090 100319475328460011090 No Department of Microbiology, Lorestan University of Medical Sciences, Khorram Abad, Iran Abdolvahab Moradi abmoradi@yahoo.com 100319475328460011091 100319475328460011091 Yes Gastroenterology and Hepatology Research Center, Golestan University of Medical Sciences, Gorgan, Iran