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Comparing Serum Concentration of Spexin Among Patients With Metabolic Syndrome, Healthy Overweight/Obese, and Normal-Weight Individuals Publisher



Bitarafan V1, 2 ; Esteghamati A3 ; Azam K4 ; Yosaee S5, 6 ; Djafarian K1
Authors
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Authors Affiliations
  1. 1. Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, 5005, Australia
  3. 3. Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Nutrition Sciences, School of Health, Larestan University of Medical Sciences, Larestan, Iran
  6. 6. Department of Nutrition Sciences, Emam Reza Teaching Hospital, Larestan University of Medical Sciences, Larestan, Iran

Source: Medical Journal of the Islamic Republic of Iran Published:2019


Abstract

Background: There are many factors related to etiology of metabolic syndrome (MetS) including obesity. Spexin, a peptide hormone released from adipose tissue, is the most down-regulated gene in obese, compared to non-obese adipose tissue. Hence, it potentially contributes to the progression and development of metabolic diseases. This study was designed to evaluate serum concentration of spexin in patients with MetS compared to weight-matched and normal-weight controls. Methods: In this case-control study, 153 participants (51 per group) were collected from October 2014 to June 2016. The study groups were all matched for age and sex and included overweight/obese individuals with MetS and 2 control groups without MetS (including weight-matched and normal-weight participants). Body composition and serum concentration of spexin and leptin were measured. Results: Serum leptin and spexin levels were significantly higher and lower, respectively, in normal-weight compared to overweight/obese groups with/without MetS (p < 0.02). No significant difference was observed in serum leptin and spexin concentrations between the overweight/obese groups with/without MetS (p ≥ 0.05). Also, spexin, with cutoff value of 4.6, had 78% sensitivity and 82% specificity for diagnosing overweight/obese from normal-weight participants. Spexin had 78% sensitivity and specificity, with cutoff value of 4.35, in diagnosing MetS participants from normal-weight group. Conclusion: This study found no correlation between the circulating level of spexin and MetS development. Higher serum concentration of spexin in normal-weight adults compared to the obese participants illustrated the potential role of this novel peptide in obesity. © Iran University of Medical Sciences.
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