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The relationship between the complement system and subclinical carotid atherosclerosis in patients with rheumatoid arthritis

Abstract: Background: Patients with rheumatoid arthritis (RA) have an increased risk of cardiovascular (CV) events and CV mortality. Subclinical carotid atherosclerosis is independently associated with rates of incident CV events among patients with RA. The complement system has been related to both the etiopathogenesis of RA and CV disease. In this study, we aimed to evaluate the association between a comprehensive assessment of the complement system and carotid intima media thickness and carotid plaque in patients with RA. Methods: 430 patients with RA were recruited. Functional assays of the three pathways of the complement system, utilizing new-generation techniques, were assessed. Additionally, serum levels of individual components of the complement system belonging to the three pathways were measured: C1q (classical), lectin (lectin), C2, C4, and C4b (classical and lectin), factor D and properdin (alternative), C3 and C3a (common), C5, C5a, and C9 (terminal), as well as regulators factor I and C1-inhibitor. Subclinical carotid atherosclerosis was evaluated by ultrasonography. Multivariable linear regression analysis was conducted to investigate the association between the complement system and carotid intima media thickness and carotid plaque. Results: After multivariable adjustment, which included traditional CV risk factors and disease-related data, C3a and C5a exhibited significant positive correlations with carotid intima media thickness. Additionally, higher values of C1-inhibitor, properdin, C3, C5, and C5a were independently associated with the presence of carotid plaque. Conclusion: The complement system and subclinical carotid atherosclerosis are linked in patients with RA.

 Authorship: Hernández-Díaz M., Rodríguez-González D., Heras-Recuero E., Gómez-Bernal F., Quevedo-Abeledo J.C., González-Rivero A.F., González-López E., Ocejo-Vinyals J.G., Jimenez-Sosa A., González-Gay M.Á., Ferraz-Amaro I.,

 Fuente: Arthritis Research & Therapy, 2024, 26, 127

 Publisher: BioMed Central

 Year of publication: 2024

 No. of pages: 9

 Publication type: Article

 DOI: 10.1186/s13075-024-03360-3

 ISSN: 1478-6354,1478-6362

 Publication Url: https://doi.org/10.1186/s13075-024-03360-3

Authorship

HERNÁNDEZ-DÍAZ, MARTA

RODRÍGUEZ-GONZÁLEZ, DARA

HERAS-RECUERO, ELENA

GÓMEZ-BERNAL, FUENSANTA

OCEJO-ABELEDO, JUAN CARLOS

GONZÁLEZ-RIVERO, AGUSTÍN F.

ELENA GONZALEZ LOPEZ

OCEJO-VINYALS, J. GONZALO

JIMÉNEZ-SOSA, ALEJANDRO

IVÁN ALEJANDRO FERRAZ AMARO