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Eur Rev Med Pharmacol Sci. 2015 Jun;19(12):2174-9.

Response of osteocalcin and insulin resistance after a hypocaloric diet in obese patients.

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Institute of Endocrinology and Nutrition, Medicine School and Department of Endocrinology and Nutrition, Hospital Clinico Universitario, University of Valladolid, Valladolid, Spain.



Osteocalcin is a hormone with a complex cross-talk between adipose tissue and the skeleton. The aim of the present study was to explore the change of osteocalcin, insulin resistance, and adipocytokines after hypocaloric diet in obese patients.


A population of 178 obese patients was analyzed. At basal time and 2 months after the dietary intervention, weight, fat mass, body mass index, basal glucose, insulin, insulin resistance (HOMA), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides, leptin, adiponectin, IL-6, TNF alpha and osteocalcin levels were measured.


After dietary treatment, BMI, weight, fat mass, waist circumference, waist to hip ratio, systolic pressure, glucose, HOMA, triglycerides, total cholesterol, leptin and LDL cholesterol decreased significantly. Osteocalcin levels have a significant decrease after weight loss (Osteocalcin (ng/ml); 9.76 ± 5.3 vs 9.31 ± 4.1: p < 0.05). In correlation analysis, a negative association was detected among osteocalcin and age, BMI, fat mass, glucose, C reactive protein, interleukin-6. In the linear regression with age-, sex-, BMI, fat mass- and insulin- adjusted, only C reactive protein concentrations are related with osteocalcin levels -0.21 (CI 95%: -0.40 -0.009).


Osteocalcin decreased after a weight loss treatment. Moreover, osteocalcin levels, before and after treatment, were related in a negative way with CRP fat mass, body mass index, age and glucose levels.

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