Protecting HIV patients from Hepatitis B virusJuly 18, 2007Since the transmission of HIV and Hepatitis B virus (HBV) are so similar, individuals infected with one of these viruses are at a significantly increased risk for contracting the other. As it is not quite clear how patients that don't respond to the HBV vaccine should be managed, new research from the University of Alberta has evaluated the immune response of HBV vaccine given intradermally (into the skin) in HIV-infected individuals who failed to respond to two cycles of HBV vaccine given intramuscularly (into the muscle). "Because those infected with HIV are at a greater risk for contracting HBV, it is crucial we promote HBV immunizations and continue to put our research efforts into why some HIV patients fail to respond to the vaccine," said Dr. Stephen Shafran, Professor and Director, Division of Infectious Diseases, at the University of Alberta. Protecting persons with HIV from contracting the HBV is an important goal. However, people with HIV have a substantially lower success rate with the HBV vaccine compared to the general population. For this study, researchers were particularly interested in measuring the levels of antibody to hepatitis B produced (called anti-HBs) because the presence of anti-HBs is considered the marker of immunity to HBV infection. Of the patients tested in the cohort, when given the HBV vaccine intradermally rather than intramuscularly, 50 per cent of the subjects successfully produced protective levels of anti-HBs after four doses of vaccine. Conversely, the remaining 50 per cent of patients still did not produce anti-HBs even after given additional doses of HBV vaccine. "Based on our study we can conclude that administering HBV vaccine intradermally cannot be recommended for HIV-infected adults who did not respond initially to intramuscular administered vaccine," said Shafran. "Other vaccine strategies, perhaps involving multiple antigens or adjuvants, will need to be investigated." University of Alberta |
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| Related HBV Current Events and HBV News Articles Toward explaining why hepatitis B hits men harder than women Scientists in China are reporting discovery of unusual liver proteins, found only in males, that may help explain the long-standing mystery of why the hepatitis B virus (HBV) sexually discriminates -- hitting men harder than women. 1 disease, not 1 demographic The Asian continent has nearly four billion people living in 47 different countries, and each of these groups has their own unique set of health issues. But when they come to the United States, they're often lumped into one large demographic: "Asian/Pacific Islander." HBV genotype B/B3 and C/C1 are the major genotypes in Indonesia? Previous studies revealed that HBV genotypes as well as mutations in the core promoter, precore or HBx gene have been shown to have an association with the clinical outcome of liver disease, however, this is still controversial. oes peripheral T-lymphocyte subpopulations correlate with hepatitis B virus load? Hepatitis B virus (HBV) infection is a dynamic process with variable biochemical, virological and histological profiles at different stages of the infection, depending on host and viral factors. Furthermore, this profile may change at a variable pace over time. Focusing HIV treatment helps control concurrent hepatitis B infection Prolonged use of highly active antiretroviral therapy (HAART) to treat people infected with both HIV and hepatitis B (HBV) helps to better control the hepatitis B infection and could delay or prevent liver complications. DKK-3 and WIF-1: Proteins related to liver cancer development? Liver cancer is one of the most fatal human malignancies and the third most frequent cause of tumor-related death, about half a million people globally each year. Future for radioembolisation in patients with advanced hepatocellular carcinoma Copenhagen, Denmark, Friday 24 April: Radioembolisation with Yttrium-90 (Y-90) glass microspheres is a safe and effective treatment for patients with advanced HCC ± portal vein thrombosis, according to new research presented today at EASL 2009, the Annual Meeting of the European Association for the Study of the Liver in Copenhagen, Denmark. Do patients at risk for B-cell malignancy need antiviral treatment? Some studies have shown that a relationship of hepatitis C (HCV) infection with type II mixed cryoglobulinemia exists. However the precise mechanism remains unclear. Models Simulate Nitrate Dynamics in Garonne, Southwest France The over-enrichment of fresh, transitional, and marine waters with nitrogen (N) can lead to problems associated with eutrophication, such as a change in species composition of aquatic plants and nuisance algal blooms. In this context, dynamic models of flow and water quality are required to aid the implementation of the Water Framework Directive and to understand the impacts of environmental change. If the diabetes has a direct carcinogenetic effect? The association of DM2 with solid tumors, and particularly with HCC, has been long suspected and several studies have reported increased mortality rates for neoplastic diseases in patients with DM2. More HBV Current Events and HBV News Articles |
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