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Mol Biol Rep. 2012 May;39(5):5503-10. doi: 10.1007/s11033-011-1353-6. Epub 2011 Dec 21.

Genetic analysis of C5a receptors in neutrophils from patients with familial Mediterranean fever.

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First Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece.


Familial Mediterranean fever (FMF) is an autoinflammatory disease, characterized by MEFV gene mutations and self-limited recurrent episodes of fever and localized serositis. Complement system is a key regulator of the inflammatory process. The aim of this study was to investigate the genetic alterations and mRNA expression pattern of C5aR and C5L2 genes in neutrophils from attack-free FMF patients. No mutations were observed in the two receptors' genes, while the genetic alteration observed in the C5aR1 gene was identified as N279 K polymorphic variant. Furthermore, lower mRNA expression of C5L2 gene was observed in neutrophils from FMF patients compared to control subjects. The binding capacity of rhC5a and the ability to produce reactive oxygen species was similar in neutrophils from healthy subjects and FMF patients and independent of the presence of N279 K polymorphism or mRNA expression of C5L2.

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