About Hepatitis B - Causes - Treatment - Exercises
Hepatitis B - Causes - Treatment - Exercises
HBV belongs together with the Epstein-Barr virus EBV, the hepatitis C virus HCV
Hepatitis B (formerly also serum hepatitis) is a hepatitis B virus (HBV) infected disease of the liver, which is often acute (85-90%), sometimes chronically. Hepatitis B - causes - treatment - exercises. Hepatitis B is one of the most common viral infections worldwide with approximately 350 million people whose blood is detectable by the virus, and thus the virus is permanently present as an infection source. Hepatitis B - Causes - Treatment - Exercises. In about one third of the world's population, specific antibodies are detectable as signs of a healed HBV infection. Liver cirrhosis and hepatic cell carcinoma may develop on the basis of chronic liver inflammation. Hepatitis B - Causes - Treatment - Exercises. The therapy of chronic hepatitis B is difficult, so the preventive vaccination is the most important measure to avoid the infection and reduce the viral carrier count.
The pathogen of hepatitis B, the 42-nm hepatitis B virus, is a partially double-stranded DNA virus and belongs to the family of Hepadnaviridae. For comparison, red blood cells are approximately 150 times bigger with 7.5 μm in diameter. Hepatitis B - Causes - Treatment - Exercises. The ca. 3200 bp large genome is in an icosahedral capsid, the hepatitis B core protein (= HBV core antigen, HBcAg). It performs a similar function to the cell nucleus in multicellular cells. The capsid is surrounded by a viral envelope, which is composed of a cellular lipid membrane and embedded surface proteins of the virus. Hepatitis B - Causes - Treatment - Exercises. There are three different forms (L-, M- and S-HBsAg) of these surface proteins (HBsAg, hepatitis B surface antigen) .Hepatitis B - Causes - Treatment - Exercises .During the multiplication of the HBV-antigen (HBeAg, "e" is interpreted as "excretory", an antigen is a molecule recognized as foreign by the defense cells); in the hepatocytes, a further protein is usually released into the blood stream; the HBeAg is a freshly produced, then abridged hepatitis B core protein (HBcAg), which is released from the virus into the blood.
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