Sickle Cell Anemia More Condition_symptoms Wikipedia Why Is Sickle Cell Anemia More Common In African Americans?

Why is Sickle Cell Anemia more common in African Americans? - sickle cell anemia more condition_symptoms wikipedia

Sickle cell anemia is a genetic defect in the hemoglobin molecule, the molecule that is called a change in shape causes when the environment reduces oxygen in the body. If the molecule changes its shape, so that red blood cells for a change, it seems like a sickle. This change in shape causes the red blood cells lodge in small capillaries, blocking blood flow to the tissues that normally feed the capillaries. This is called sickle cell crisis can be very painful and sometimes fatal.

In sickle cell anemia is one person two defective genes. If a person has a defective gene, a vector that the gene can be transferred to their children know. There are a number of different genetic mutations that are discovered to SCA, and the people of West Africa. The reason is the faulty gene survived, because they are carriers seem greater immunity to malaria, the probability of surviving long enough to reproduce and have transferred increases, the defective gene.

It would be very unusual for a "white" person SCA and if this is the case, probably due to a number of African descent. There are some conditions for the blood of other genetic as thallasemia which mimic the SCA, and this can not be found in African-American population.

The definitive diagnosis of SCA can be performed by a test called hemoglobin electrophoresis.

In summary, SCA is found in people of African descent in the West, because there, the first mutation arose.