Are lipid ratios less susceptible to change with systemic inflammation than individual lipid components in patients with rheumatoid arthritis?

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Abstract

Rheumatoid arthritis (RA) associates with excess cardiovascular risk and there is a need to assess that risk. However, individual lipid levels may be influenced by disease activity and drug use, whereas lipid ratios may be more robust. A cross-sectional cohort of 400 consecutive patients was used to establish factors that influenced individual lipid levels and lipid ratios in RA, using multiple regression models. A further longitudinal cohort of 550 patients with RA was used to confirm these findings, using generalized estimating equations. Cross-sectionally, higher C-reactive protein (CRP) levels correlated with lower levels of total cholesterol (TC), low-density lipoprotein-cholesterol (LDL-C), and high-density lipoprotein-cholesterol ([HDL-C] P = .015), whereas lipid ratios did not correlate with CRP. The findings were broadly replicated in the longitudinal data. In summary, the effects of inflammation on individual lipid levels may underestimate lipid-associated cardiovascular disease (CVD) risk in RA, thus lipid ratios may be more appropriate for CVD risk stratification in RA.

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Original languageEnglish
Pages (from-to)167-175
Number of pages9
JournalAngiology
Volume62
Issue number2
Early online date3 Aug 2010
DOIs
Publication statusPublished - Feb 2011

    Keywords

  • aged, anti-inflammatory agents, antirheumatic agents, rheumatoid arthritis, c-reactive protein, cohort studies, cross-sectional studies, dyslipidemias, female, humans, lipids, male, middle aged, retrospective studies, risk factors

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