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Journal of Diabetes Research
Volume 2015 (2015), Article ID 680867, 8 pages
http://dx.doi.org/10.1155/2015/680867
Research Article

Changes in Plasma Levels of N-Arachidonoyl Ethanolamine and N-Palmitoylethanolamine following Bariatric Surgery in Morbidly Obese Females with Impaired Glucose Homeostasis

1Diabetes Research Group, Institute of Life Sciences, Swansea University, Swansea SA2 8PP, UK
2Department of Diabetes & Endocrinology, Morriston Hospital, ABM University Health Board, Swansea SA6 6NL, UK
3Welsh Institute of Metabolic and Obesity Surgery, Morriston Hospital, ABM University Health Board, Swansea SA6 6NL, UK
4Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Royal Derby Hospital, Derby DE22 3DT, UK
5Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK

Received 1 December 2014; Revised 11 March 2015; Accepted 12 March 2015

Academic Editor: Carlos Martinez Salgado

Copyright © 2015 Akhila Mallipedhi 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

Aim. We examined endocannabinoids (ECs) in relation to bariatric surgery and the association between plasma ECs and markers of insulin resistance. Methods. A study of 20 participants undergoing bariatric surgery. Fasting and 2-hour plasma glucose, lipids, insulin, and C-peptide were recorded preoperatively and 6 months postoperatively with plasma ECs (AEA, 2-AG) and endocannabinoid-related lipids (PEA, OEA). Results. Gender-specific analysis showed differences in AEA, OEA, and PEA preoperatively with reductions in AEA and PEA in females postoperatively. Preoperatively, AEA was correlated with 2-hour glucose (, ), HOMA-IR (, ), and HOMA %S (, ). OEA was correlated with weight (, ), waist circumference (, ), fasting insulin (, ), and HOMA-IR (, ). PEA was correlated with fasting insulin (, ). 2-AG had a negative correlation with fasting glucose (, ). Conclusion. Gender differences exist in circulating ECs in obese subjects. Females show changes in AEA and PEA after bariatric surgery. Specific correlations exist between different ECs and markers of obesity and insulin and glucose homeostasis.