Journal
EXPERT REVIEW OF NEUROTHERAPEUTICS
Volume 9, Issue 9, Pages 1331-1339Publisher
EXPERT REVIEWS
DOI: 10.1586/ERN.09.81
Keywords
immunoadsorption; immunotherapy; multiple sclerosis; plasma exchange
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Apheresis is a general term that describes removal of abnormal blood constituents by extracorporeal blood purification methods. To date, therapeutic plasma exchange (PE) is the most common apheresis procedure. Here, plasma is separated from corpuscular blood constituents and replaced with a substitution fluid. In contrast to immunoadsorption, PE is a nonspecific treatment modality with elimination of the entire plasma. The therapeutic effect is based on the removal of circulating, pathogenic immune factors including autoantibodies. Currently, PE is used for treatment of several immune-mediated neurological disorders. While first experiences relate to acute life-threatening conditions, such as treatment of Guillain Barre syndrome or myasthenic crisis, therapeutic success was also shown in chronic diseases where immunosuppressive therapy is often required for long-term management. PE has been applied successfully in chronic inflammatory demyelinating polyneuropathy, paraproteinemic polyneuropathy, stiff person syndrome, and may also be tried in several diseases of paraneoplastic origin. In recent years, PE was also established as an escalation therapy for steroid-unresponsive relapses of multiple sclerosis, and thus has gained more widespread attention. Adding to its increasing application in clinical practice, the procedure is usually well tolerated. Possible adverse reactions mainly relate to vascular access, the use of replacement fluids and the need for anticoagulation.
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