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Abstract Number: 1437

Cholesterol Efflux Capacity of HDL and Coronary Atherosclerosis in Rheumatoid Arthritis

Michelle J. Ormseth1, Patricia Yancey2, Suguru Yamamoto2, Annette M. Oeser1, Tebeb Gebretsadik3, Ayumi Shintani1, MacRae F. Linton1, Sergio Fazio1, Sean Davies1, L Jackson Roberts II1, Kasey C. Vickers1, Paolo Raggi4, Valentina Kon1 and C Michael Stein1, 1Vanderbilt University, Nashville, TN, 2Medicine, Vanderbilt University, Nashville, TN, 3Biostatistics, Vanderbilt University, Nashville, TN, 4Emory University, Atlanta, GA

Meeting: 2014 ACR/ARHP Annual Meeting

Keywords: Atherosclerosis, Cardiovascular disease, Cholesterol and rheumatoid arthritis (RA)

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Session Information

Session Title: Rheumatoid Arthritis - Clinical Aspects (ACR): Comorbidities, Treatment Outcomes and Mortality

Session Type: Abstract Submissions (ACR)

Background/Purpose: Cardiovascular (CV) risk is increased in patients with rheumatoid arthritis (RA), but not fully explained by traditional risk factors such as LDL and HDL cholesterol concentrations. The cholesterol efflux capacity of HDL may be a better CV risk predictor than HDL concentrations. We hypothesized that HDL’s cholesterol efflux capacity is impaired and inversely associated with coronary atherosclerosis in patients with RA.

Methods: We measured the cholesterol efflux capacity of apolipoprotein B depleted serum and coronary artery calcium score in 134 patients with RA and 76 control subjects, frequency-matched for age, race and sex. The relationship between cholesterol efflux capacity and coronary artery calcium score and other clinical variables of interest was assessed in patients with RA.

Results: Cholesterol efflux capacity was similar among RA (median [IQR]: 34% removal [28, 41%]) and control subjects (35% removal [27%, 39%]) (P=0.73). In RA, increasing cholesterol efflux capacity was not significantly associated with decreased coronary calcium score (OR=0.78 (95% CI 0.51-1.19), P=0.24, adjusted for age, race and sex, Framingham risk score and presence of diabetes). Cholesterol efflux capacity was not significantly associated with RA disease activity score, C-reactive protein, urinary F2-isoprostanes, or degree of insulin resistance in RA.

Conclusion: Cholesterol efflux capacity is not significantly altered in patients with relatively well-controlled RA nor is it significantly associated with coronary artery calcium score.


Disclosure:

M. J. Ormseth,
None;

P. Yancey,
None;

S. Yamamoto,
None;

A. M. Oeser,
None;

T. Gebretsadik,
None;

A. Shintani,
None;

M. F. Linton,
None;

S. Fazio,
None;

S. Davies,
None;

L. J. Roberts II,
None;

K. C. Vickers,
None;

P. Raggi,
None;

V. Kon,
None;

C. M. Stein,
None.

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