alexa Primary biliary cirrhosis-Epidemiology

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Primary biliary cirrhosis-Epidemiology

Primary biliary cholangitis historically known as primary biliary cirrhosis, often abbreviated PBC, is an autoimmune disease of the liver marked by the slow progressive destruction of the small bile ducts of the liver, with the intralobular ducts (Canals of Hering) affected early in the disease.

Causes

The cause of the disease is attributed to an immunological basis for the disease, making it an autoimmune disorder. Most of the patients (>90%) seem to have anti-mitochondrial antibodies (AMAs) against pyruvate dehydrogenase complex (PDC-E2), an enzyme complex that is found in the mitochondria.

Epidemiology

The female:male ratio is at least 9:1. In some areas of the US and UK the prevalence is estimated to be as high as 1 in 4000. This is much more common than in South America or Africa, which may be due to better recognition in the US and UK. First-degree relatives may have as much as a 500 times increase in prevalence, but there is debate if this risk is greater in the same generation relatives or the one that follows.

 

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