4.6 Article

Chronic widespread pain: clinical comorbidities and psychological correlates

期刊

PAIN
卷 156, 期 8, 页码 1458-1464

出版社

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/j.pain.0000000000000182

关键词

CWP; Chronic widespread pain; Genetics; Twins; Emotional regulation; Comorbidity

资金

  1. Swiss National Science Foundation
  2. EU FP7 project Pain_OMICS
  3. Pain Research Foundation
  4. Arthritis Research UK
  5. Wellcome Trust
  6. European Community's Seventh Framework Programme (FP7)
  7. National Institute for Health Research (NIHR)-funded BioResource, Clinical Research Facility and Biomedical Research Centre based at Guy's and St Thomas' NHS Foundation Trust in partnership
  8. King's College London
  9. Versus Arthritis [20682] Funding Source: researchfish

向作者/读者索取更多资源

Recent studies have provided consistent evidence for a genetic influence on chronic widespread pain (CWP). The aim of this study was to investigate (1) the etiological structure underlying CWP by examining the covariation between CWP and psychological comorbidities and psychoaffective correlates and (2) the decomposition of the covariation into genetic and environmental components. A total of 3266 female twins (mean age 56.6 years) were subject to multivariate analyses. Using validated questionnaires to classify twins as having CWP, the prevalence of CWP was 20.8%. In the multivariate analysis, the most suitable model was the common pathway model. This model revealed 2 underlying latent variables, one common to anxiety, emotional intelligence, and emotional instability (f1) and the other common to depression and CWP (f2), the latter being highly heritable (86%). Both latent variables (f1 and f2) shared an additive genetic and a nonshared environmental factor. In addition, a second additive genetic factor loading only on f2 was found. This study reveals the structure of genetic and environmental influences of CWP and its psychoaffective correlates. The results show that the clustering of CWP and depression is due to a common, highly heritable, underlying latent trait. In addition, we found evidence that CWP, anxiety, emotional instability, and emotional intelligence are influenced by different underlying latent traits sharing the same genetic and nonshared environmental factors. This is the first study to reveal the structure and relative importance of genetic and environmental influences on complex etiological mechanisms of CWP and its correlates.

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