Fasting and postprandial levels of a novel anorexigenic peptide nesfatin in childhood obesity

Ahmet Anık; Gönül Çatlı; Ayhan Abacı; Tuncay Küme; Ece Bober

doi:10.1515/jpem-2013-0475

Article

Fasting and postprandial levels of a novel anorexigenic peptide nesfatin in childhood obesity

Ahmet Anık , Gönül Çatlı , Ayhan Abacı , Tuncay Küme and Ece Bober

Published/Copyright: May 13, 2014

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From the journal Journal of Pediatric Endocrinology and Metabolism Volume 27 Issue 7-8

Abstract

Background: Nesfatin-1, a recently discovered anorexigenic peptide, is expressed in several tissues, including pancreatic islet cells and central nervous system. However, its pathophysiological role in the development of obesity and insulin resistance remains unknown.

Aim: To investigate the possible involvement of nesfatin-1 in the pathogenesis of childhood obesity, we examined the relationship between fasting and postprandial nesfatin-1 concentrations and metabolic/antropometric parameters in obese children.

Material and methods: The study included obese children with a body mass index >95th percentile. Fasting serum glucose, insulin, lipid profile, fasting and postprandial (120th min) nesfatin-1 levels were measured to evaluate the metabolic parameters. Different cutoff values for prepubertal and pubertal stages were used to determine the status of insulin resistance (HOMA-IR) (prepubertal >2.5, pubertal >4). The percentage of body fat was measured using bioelectric impedance analysis.

Results: Seventy-one obese children were included in this study. There was no statistically significant difference between fasting and postprandial nesfatin-1 levels in obese subjects (0.70±0.15 and 0.69±0.14 ng/mL, p>0.05, respectively). Insulin resistance was observed in 58% (41/71) of the cases. There was no significant difference in either fasting or postprandial serum nesfatin-1 levels between the insulin-resistant and non-resistant groups (p>0.05). There was no correlation between fasting and postprandial serum nesfatin-1 levels and anthropometric and metabolic parameters in insulin-resistant and non-resistant groups.

Conclusions: In this study, there was no significant increase in the postprandial level of nesfatin-1. This observation suggested that oral glucose load in obese children may not be sufficient for nesfatin-1 response and that nesfatin-1 may not have an effect as a short-term regulator of food intake.

Keywords: childhood; insulin resistance; nesfatin; obesity

Corresponding author: Ayhan Abaci, Assistant Professor, MD, Faculty of Medicine, Department of Pediatric Endocrinology, Dokuz Eylul University, Balcova, Izmir, 35340, Turkey, Phone: +90 232 4126076, Fax: +90 232 4126001, E-mail: ayhanabaci@gmail.com

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Received: 2013-12-9

Accepted: 2014-3-31

Published Online: 2014-5-13

Published in Print: 2014-7-1

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Articles in the same Issue

https://doi.org/10.1515/jpem-2013-0475

Keywords for this article

childhood; insulin resistance; nesfatin; obesity