Asked by
DR.ANIL GUPT
in
Personal Health
at
3:52 PM on November 09, 2008
Vinay Kiran's Answer
Plasmapheresis is a blood purification procedure used to treat several autoimmune diseases. It is also known as therapeutic plasma exchange.
In an autoimmune disease, the immune system attacks the body's own tissues. In many autoimmune diseases, the chief weapons of attack are antibodies, proteins that circulate in the bloodstream until they meet and bind with the target tissue. Once bound, they impair the functions of the target, and signal other immune components to respond as well.
Plasmapheresis is used to remove antibodies from the bloodstream, thereby preventing them from attacking their targets. It does not directly affect the immune system's ability to make more antibodies, and therefore may only offer temporary benefit. This procedure is most useful in acute, self-limited disorders such as Guillain-Barré syndrome, or when chronic disorders, such as myasthenia gravis, become more severe in symptoms. In these instances, a rapid improvement could save the patient's life. Neurologic diseases comprise 90% of the diseases that could profit from plasmapheresis.
Source: http://www.healthatoz.com/healthato z/Atoz/common/standard/transform.js p?requestURI=/healthatoz/Atoz/ency/ plasmapheresis.jsp
Answered at
4:47 PM on November 09, 2008
Read all answers