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An unexpected complication following immunoadsorption with a staphylococcal protein A column
D W Huestis1, R M Rifkin, B G Durie
1Department of Pathology, University of Arizona College of Medicine, Tucson 85724.
Extracorporeal immune adsorption using staphylococcal protein A (SPA) may remove harmful immune components. However, one patient experienced severe neuropathy relapse after SPA treatment, highlighting the need for caution in its application.
Area of Science:
- Neurology
- Immunology
- Nephrology
Background:
- Extracorporeal immune adsorption with staphylococcal protein A (SPA) columns is utilized for removing immune complexes and immunoglobulins.
- This therapeutic approach is applied across various diseases.
Observation:
- A case study involving an elderly male patient with neuropathy associated with monoclonal gammopathy is presented.
- The patient underwent three on-line SPA procedures for treatment.
Findings:
- Following the SPA treatments, the patient experienced a relapse of neuropathy, leading to near-total paralysis.
- Full recovery to baseline clinical status took several months.
Implications:
- The severe relapse suggests potential mechanisms such as T-lymphocyte activation by SPA, gamma interferon release, or the removal of anti-idiotype control.
- Caution is advised when applying immunoadsorption to conditions lacking extensive evaluation.
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