Ghrelin and leptin levels in obese adolescents. Relationship with body fat and insulin resistance

Charilaos Stylianou, Assimina Galli-Tsinopoulou, Dimitrios Farmakiotis, Israel Rousso, Michael Karamouzis, George Koliakos, Sanda Nousia-Arvanitakis

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OBJECTIVE: Ghrelin and leptin levels are influenced by body fat (BF%), pubertal stage and possibly insulin resistance (IR). The aim of our study was: 1) To compare fasting ghrelin and leptin levels between obese and non-obese, adolescents, 2) to investigate possible correlations of these hormones with BF %, as well as IR…

Adiponectin levels may help assess the clinical repercussions of obesity irrespective of body mass index

Eirini Dermitzaki, Pavlina D. Avgoustinaki, Eirini C. Spyridaki, Panagiotis Simos, Niki Malliaraki, Maria Venihaki, Christos Tsatsanis, Andrew N. Margioris

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OBJECTIVE: Adiponectin is the major product of adipose tissue. The aim of this study was to associate adiponectin levels with adipose tissue and metabolic indices. DESIGN: Plasma samples of 274 non-diabetic volunteers were collected to evaluate for adiponectin, inflammatory markers, insulin and lipid parameters. Body fat composition was measured by DEXA. RESULTS: As expected, adiponectin levels correlated with body mass index (BMI) …