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The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis

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Published on: March 18, 2010

Acquired C1 esterase inhibitor deficiency.

S N Markovic¹, D J Inwards, E A Frigas

¹Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota 55901, USA.

Annals of Internal Medicine

|January 22, 2000

Summary

Acquired C1 esterase inhibitor deficiency, a rare condition linked to autoimmune disorders, presents with angioedema. Diagnosis involves low C4 and C1 esterase inhibitor levels, confirmed by reviewing 22 cases.

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Area of Science:

Immunology
Hematology

Background:

Acquired C1 esterase inhibitor deficiency is a rare disorder.
It is often associated with autoimmune diseases or lymphoproliferative disorders.

Observation:

The condition most commonly affects adults and the elderly.
Patients typically present with recurrent angioedema.
Initial diagnostic clues include low serum C4 with normal C3 levels.

Findings:

Low C1q levels and reduced C1 esterase inhibitor activity confirm the diagnosis.
This paper reviews 22 cases and relevant literature on diagnosis and treatment.

Implications:

Understanding acquired C1 esterase inhibitor deficiency aids in diagnosing rare angioedema cases.
This review provides insights into the management of this uncommon condition.