The Prosorba Column is a plasma filtering device used to treat severe cases of rheumatoid arthritis or psoriatic arthritis. Its active element is Protein A bonded to a diatomaceous earth/clay bead . The effect of the Protein A is to remove circulating immune complexes responsible for the autoimmune joint deterioration process.
The device was originally manufactured by Imre Corp and approved by the FDA in 1987. The Prosorba Column went out of production at the end of 2006.
- Eustice, Carol; Scott J. Zashin (2007). The Everything Health Guide to Arthritis. Everything Books. pp. 111–113. ISBN 978-1-59869-410-9.
- "Drug Discovery in Seattle 2015: An Updated History | Xconomy". Xconomy. 3 August 2015. Retrieved 5 May 2016.
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