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Higher Prevalence and Degree of Insulin Resistance in Patients with Rheumatoid Arthritis Than in Patients With Systemic Lupus Erythematosus

Abstract: Objective. Since insulin resistance (IR) is highly prevalent in patients with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA), we aimed to determine whether differences in IR exist between the two conditions. Methods. We conducted a cross-sectional study comprising 413 subjects without diabetes (186 with SLE and 227 with RA). Glucose, insulin, and C-peptide serum levels, as well as IR by the homeostatic model assessment (HOMA2) were studied. A multivariable regression analysis was performed to evaluate the differences in IR indexes between patients with SLE and RA, as well as to determine if IR risk factors or disease-related characteristics are differentially associated with IR in both populations. Results. The insulin:C-peptide molar ratio was upregulated in patients with RA compared to patients with SLE (? 0.009, 95% CI 0.005?0.014, P < 0.001) after multivariable analysis. HOMA2 indexes related to insulin sensitivity (HOMA2-%S) were found to be lower (? ?27, 95% CI ?46 to ?9, P = 0.004) and ? cell function (HOMA2-%B) showed higher IR indexes (? 38, 95% CI 23?52, P < 0.001) in RA than in SLE patients after multivariable analysis. Patients with RA more often fulfilled the definition of IR than those with SLE (OR 2.15, 95% CI 1.25?3.69, P = 0.005). The size effect of IR factors on IR indexes was found to be equal in both diseases. Conclusion. IR sensitivity is lower and ? cell function is higher in RA than in SLE patients. The fact that traditional IR factors have an equal effect on IR in both SLE and RA supports the contention that these differences are related to the diseases themselves.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: The Journal of Rheumatology March 2021, 48 (3) 339-347

Editorial: The Journal of Rheumatology Publishing Company Limited

 Año de publicación: 2021

Nº de páginas: 9

Tipo de publicación: Artículo de Revista

 DOI: 10.3899/jrheum.200435

ISSN: 0315-162X

Url de la publicación: https://doi.org/10.3899/jrheum.200435

Autores/as

JUAN C. QUEVEDO-ABELEDO

HIURMA SÁNCHEZ-PÉREZ

BEATRIZ TEJERA-SEGURA

LAURA DE ARMAS-RILLO

SOLEDAD OJEDA

CELIA ERAUSQUIN