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International Journal of Endocrinology
Volume 2013, Article ID 236085, 7 pages
http://dx.doi.org/10.1155/2013/236085
Research Article

Acylated and Desacylated Ghrelin, Preptin, Leptin, and Nesfatin-1 Peptide Changes Related to the Body Mass Index

1Department of Endocrinology and Metabolism, Firat University Hospital, 23119 Elazig, Turkey
2Department of Medical Biochemistry and Clinical Biochemistry, Firat Hormones Research Group, Firat University Hospital, 23119 Elazig, Turkey
3Department of Histology and Embryology, Medical School, Erzincan University, 24100 Erzincan, Turkey
4Atatürk Vocational School of Health Science, Kafkas University, 36040 Kars, Turkey
5Department of Nutrition and Dietetic, Bitlis Eren University, 13000 Bitlis, Turkey

Received 2 August 2013; Revised 17 October 2013; Accepted 5 November 2013

Academic Editor: Daniela Jezova

Copyright © 2013 Yusuf Ozkan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study examines the levels of acylated and desacylated ghrelin, preptin, leptin, and nesfatin-1 peptide changes related to the body mass index (BMI). The subjects were allocated to 5 groups depending on their BMIs as follows: Group I (BMI <18.5 kg/m2); Group II (BMI 18.5–24.9 kg/m2); Group III (BMI 25–29.9 kg/m2); Group IV (BMI 30–39.9 kg/m2); Group V (BMI >40 kg/m2). Serum acylated and desacylated ghrelin, preptin, and leptin levels were measured by the enzyme-linked immunosorbent assay (ELISA) and nesfatin-1 was measured by the enzyme immunoassay (EIA). Desacylated ghrelin levels showed a gradual and statistically significant drop from Group I to Group V, while preptin and leptin levels exhibited a gradual and significant increase from Group I to Group IV. Serum nesfatin-1 levels gradually, but not significantly, increased from Group I to Group III and showed a significant decrease in Groups IV and V. In conclusion, leptin, preptin, and acylated ghrelin (AG) levels increased with higher BMI, whereas desacylated ghrelin (DAG) decreased and nesfatin-1 showed no clear relationship to BMI.