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2016 ; 101
(7
): 2931-6
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Decreased Circulating Levels of Spexin in Obese Children
#MMPMID27218269
Kumar S
; Hossain J
; Nader N
; Aguirre R
; Sriram S
; Balagopal PB
J Clin Endocrinol Metab
2016[Jul]; 101
(7
): 2931-6
PMID27218269
show ga
CONTEXT: Spexin is a novel peptide that is implicated in obesity and related
energy homeostasis in animals and adult humans. Little is known about its role in
children. OBJECTIVE: The aim of the current study was to determine the potential
role of Spexin in obese children and explore its relationships with various
cardiometabolic risk factors. DESIGN AND PARTICIPANTS: This was a cross-sectional
study composed of 69 children (51 obese and 18 normal weight; age 15.3 ± 0.26 y).
OUTCOME MEASURES: Spexin was measured using a specific enzyme-linked
immunosorbent assay. Leptin, total and high-molecular-weight adiponectin, IL-6,
high-sensitivity C-reactive protein, glucose, and insulin were also measured.
Mann-Whitney U test, Pearson and Spearman rank correlations, logistic regression,
and cluster analysis were used for the analysis and interpretation of the data.
RESULTS: Spexin levels were significantly lower in obese vs normal-weight
children, median(IQR) (0.33 ng/mL [0.27-0.44] vs 0.42 ng/mL [0.33-0.55]; P =
.024), but did not correlate with other adipokines and/or insulin and glucose
levels. Ordinal categorical variables of Spexin showed a strictly reverse
association of obesity with the level of Spexin. Cluster analysis of Spexin and
body mass index z score resulted in splitting the participants into normal-weight
and obese-weight groups with high accuracy. CONCLUSIONS: Lower circulating levels
of Spexin in obese children compared with their normal-weight counterparts and
the ability to discriminate obese and normal-weight groups based on Spexin
concentration enabled us to suggest a potential role for this novel peptide in
childhood obesity. The clinical significance of these findings needs additional
investigation.