C-reactive protein and its role in metabolic syndrome: mendelian randomisation study

Nicholas J. Timpson*, Debbie A. Lawlor, Roger M. Harbord, Tom R. Gaunt, Ian Nm Day, Lyle J. Palmer, Andrew T. Hattersley, Shah Ebrahim, Gordon Do Lowe, Ann Rumley, George Davey Smith

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

248 Citations (Scopus)

Abstract

Background Circulating C-reactive protein (CRP) is associated with the metabolic syndrome and might be causally linked to it. Our aim was to generate estimates of the association between plasma CRP and metabolic syndrome phenotypes that were free from confounding and reverse causation, to assess the causal role of this protein. Methods We examined associations between serum CRP concentration and metabolic syndrome phenotypes in the British Women's Heart and Health Study. We then compared these estimates with those derived from a mendelian randomised framework with common CRP gene haplotypes to generate unconfounded and unbiased estimates of any causal associations. Findings In a sample of British women, body-mass index (BMI), systolic blood pressure, waist-to-hip ratio, serum concentrations of HDL cholesterol and triglycerides, and insulin resistance were all associated with plasma CRP concentration. CRP haplotypes were associated with plasma CRP concentration (pInterpretation Disparity between estimates of the association between plasma CRP and phenotypes comprising the metabolic syndrome derived from conventional analyses and those from a mendelian randomisation approach suggests that there is no causal association between CRP and the metabolic syndrome phenotypes.
Translated title of the contributionC-reactive protein and its role in metabolic syndrome: mendelian randomisation study
Original languageEnglish
Pages (from-to)1954-1959
Number of pages6
JournalLancet
Volume366
Issue number9501
DOIs
Publication statusPublished - 3 Dec 2005

Bibliographical note

Publisher: Elsevier

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