Relevance of increased serum cystatin C to vascular alterations in obese children - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue International Journal of Pediatric Obesity Année : 2012

Relevance of increased serum cystatin C to vascular alterations in obese children

D. Bonnet

Résumé

Objective: Epidemiological studies report a positive relationship between serum cystatin C and cardiovascular outcomes in adults. Here, we tested the relevance of cystatin C as a biomarker for early vascular alterations in severely obese children. Methods: Two hundred nineteen obese (140 girls; age = 11.7 +/- 2.7 years, BMI Z-score = 4.7 +/- 1.2 SD) and 262 non-obese children (129 girls; age = 11.6 +/- 0.6 years, body mass index [ BMI] Z-score = 0.1 +/- 1.0 SD). Serum cystatin C was measured by immunonephelometry. Intima media thickness (IMT), incremental elastic modulus, and flow-mediated and glyceryl-trinitrate-mediated dilations were determined at the common carotid artery and the brachial artery in obese children. Results: Obese children had significantly higher serum cystatin C than normal weight controls (0.86 +/- 0.01 vs. 0.80 +/- 0.01, P < 0.0001). In obese children, serum cystatin C correlates positively with BMI and the homeostasis model assessment index and negatively with the quantitative insulin sensitivity check index and adiponectin. A positive relationship was found between serum cystatin C and carotid IMT (r = 0.23, P = 0.0005), which remained significant in multivariate models adjusted for BMI (P = 0.01) and adiponectin with a trend towards significance (P = 0.05). Conclusion: This study positions cystatin C and adiponectin as covariables associated with arterial wall thickness in obese children. Although the underlying pathophysiology linking cystatin C to early vascular disease remains to be deciphered, cystatin C may represent a novel adipose tissue-derived biomarker implicated in obesity-related comorbidities early in life.

Dates et versions

hal-02643849 , version 1 (28-05-2020)

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Citer

B. Dubern, J. -C. Lafarge, S. Fellahi, N. Naour, N. Copin, et al.. Relevance of increased serum cystatin C to vascular alterations in obese children. International Journal of Pediatric Obesity, 2012, 7 (5), pp.374 - 381. ⟨10.1111/j.2047-6310.2012.00053.x⟩. ⟨hal-02643849⟩
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