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Παρασκευή 9 Μαρτίου 2018

Cryoglobulins: An update on detection, mechanisms and clinical contribution

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Publication date: Available online 8 March 2018
Source:Autoimmunity Reviews
Author(s): Marie-Nathalie Kolopp-Sarda, Pierre Miossec
Cryoglobulins are immunoglobulins precipitating in cold condition. They are classified in 3 types according to the Brouet classification and may lead to vasculitis of small and medium size vessels. Vasculitis is related to vessel obstruction by monoclonal cryoglobulin aggregates in type I cryoglobulins and immune complex deposition in type II and III mixed cryoglobulins. This phenomenon is favored by low temperature, especially in skin, joints, and peripheral nerves, or increased cryoglobulin concentration in kidneys. For their detection, collection and clotting at 37 °C are critical pre-analytical conditions. Cryoglobulin characterization and quantification are important to identify the underlying disease. Since detection and identification of cryoglobulins lack standardization, a protocol for such detection, characterization and quantification is proposed.



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