C-reactive protein in adolescent twins: Patterns and relationship to adiposity

Guoying Wang, Katherine Kaufer Christoffel, Wendy J. Brickman, Xiumei Hong, Lester Arguelles, Shanchun Zhang, Binyan Wang, Zhiping Li, Houxun Xing, Gengfu Tang, Donald Zimmerman, Xiping Xu, Xiaobin Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Context: Elevated C-reactive protein (CRP) is a marker of cardiovascular risk in adults. Patterns and determinants of CRP in adolescents have not been well described. Objective: This study aimed to determine how CRP varies by age, gender, Tanner stage, and body fat composition in rural Chinese adolescents and to what degree adiposity-CRP associations are attributable to shared genetic and environmental factors. Design and Setting: Data were derived from an ongoing study of metabolic syndrome in a large community-based twin cohort enrolled in Anqing, China. Participants: The study sample included 1180 adolescent twins aged 13-21 yr. Main Outcome Measures: Plasma CRP concentrations were measured by sandwich immunoassay using flow metric xMAP technology. Body fat composition was assessed by dual-energy x-ray absorptiometry. Results: CRP levels linearly increased across age and Tanner stage in males (P ≤ 0.0001), but in females, CRP exhibited no trend after adjusting for fat mass (P > 0.05). For males, the most explanatory measure was body mass index (partial r 2 = 5.2%), whereas percent body fat (partial r 2 = 8.8%) was more explanatory in females. Of the phenotypic correlations between adiposity measures and CRP (0.25- 0.28), 86-89% were attributed to shared genetic factors and 11-14% to common unique environmental factors in both sexes. Conclusions: Adiposity is a strong determinant of CRP even in this relatively lean Chinese population. There is notable gender difference for the CRP pattern and the relationship of CRP with adiposity during adolescence. To a large degree, common genetic factors may underlie the observed adiposity-CRP-phenotypic correlations.

Original languageEnglish (US)
Pages (from-to)3226-3233
Number of pages8
JournalJournal of Clinical Endocrinology and Metabolism
Volume96
Issue number10
DOIs
StatePublished - Oct 2011

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

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