Abstract
Background:
Secreted frizzled-related protein 5 (SFRP5) is an adipokine protecting against obesity-related insulin resistance and diabetes. SFRP5 binds to wingless type mouse mammary tumor virus (MMTV) integration site family member 5A (WNT5A) to improve insulin sensitivity. We performed the first study of SFRP5 and WNT5A simultaneously in children.
Methods:
Prepubertal children (n = 342) were assessed for circulating SFRP5 (all subjects) and circulating WNT5A (210 subjects), and associations were sought with metabolic markers. In conditioned media of adipose tissue explants from 12 additional children, SFRP5 and WNT5A were studied further.
Results:
The concentrations of SFRP5 and WNT5A correlated positively in serum and in conditioned media (all P < 0.001). Lower level of circulating SFRP5 (lowest quartile) was associated with higher BMI (15% increase, P < 0.0001) and lower level of high-molecular-weight adiponectin (26% decrease, P = 0.002). Circulating WNT5A related closely with insulin resistance assessed by the homeostasis model assessment for insulin resistance and hepatic markers (alanine transaminase and gamma glutamyl transpeptidase), particularly in children with lower circulating SFRP5 levels (all P < 0.004).
Conclusion:
SFRP5 and WNT5A comprise a balanced duo that may regulate metabolic homeostasis in prepubertal children.
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We are grateful to all the children and parents who took part in the study.
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Prats-Puig, A., Soriano-Rodríguez, P., Carreras-Badosa, G. et al. Balanced duo of anti-inflammatory SFRP5 and proinflammatory WNT5A in children. Pediatr Res 75, 793–797 (2014). https://doi.org/10.1038/pr.2014.29
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DOI: https://doi.org/10.1038/pr.2014.29
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