Hepatitis B surface antigen

summary

Hepatitis B surface antigen (HBsAg) is the coat protein of hepatitis B virus, which is not infectious in itself. However, its appearance is often accompanied by the existence of hepatitis B virus, so it is a sign of being infected with hepatitis B virus. It can be found in the blood, saliva, milk, sweat, tears, nasopharyngeal secretions, semen and vaginal secretions of patients. So how does hepatitis B come into being?

Hepatitis B surface antigen

Acute hepatitis can induce hepatitis B, mainly because when the human body is infected with hepatitis B virus, T cells in the body will attack liver cells and release hepatitis B virus into the blood, and combine with specific antibodies to increase the production of interferon.

Chronic active hepatitis can also induce the generation of hepatitis B, mainly due to the patient's immune function defect and immune regulation disorder, making the body active replication after infection with hepatitis B virus, easy to cause chronic infection.

Asymptomatic hepatitis B virus carriers and patients with chronic persistent hepatitis are re infected with hepatitis B virus when their immune function is low, which makes the body unable to produce an effective immune response and lead to liver cell damage, and the hepatitis B virus carriers can not clear the virus and present a long-term carrying state due to their lack of infectious agents.

matters needing attention

Hepatitis B surface antigen carriers should establish their own health records, regular follow-up to the hospital. At ordinary times, we should pay attention to the combination of work and rest. If we find that we are tired and weak, we should go to the hospital in time.