Open AccessEffect of Lys656Asn Polymorphism of Leptin Receptor Gene on Cardiovascular Risk Factors and Serum Adipokine Levels after a High Polyunsaturated Fat Diet in Obese Patients
Author(s) -
Luis D. A.,
Aller R.,
Izaola O.,
Gonzalez Sagrado M.,
Conde R.,
Fuente B.,
Primo D.
Publication year - 2015
Publication title -
journal of clinical laboratory analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 50
eISSN - 1098-2825
pISSN - 0887-8013
DOI - 10.1002/jcla.21790
Subject(s) - medicine , endocrinology , leptin , adipokine , waist , leptin receptor , blood pressure , polyunsaturated fatty acid , obesity , insulin , weight loss , blood lipids , body mass index , cholesterol , chemistry , fatty acid , biochemistry
Background Human obesity is characterized by high levels of leptin, and leptin levels may change with weight loss and dietary restriction. The aim of our study was to investigate the influence of Lys656Asn polymorphism in the leptin receptor gene on cardiovascular risk factors, weight loss, and serum leptin levels to a high polyunsaturated fatty acid (PUFA) hypocaloric diet in obese patients. Design A sample of 132 obese patients was analyzed in a prospective way with a dietary intervention. The enriched PUFAs hypocaloric intervention consisted in a diet of 1,459 kcal, 45.7% of carbohydrates, 34.4% of lipids, and 19.9% of proteins. Results In wild‐type group, BMI (−1.9 ± 1.4 kg/m 2 ), weight (−4.4 ± 3.2 kg), fat mass (−4.2 ± 3.8 kg), waist circumference (−4.1 ± 3.1 cm), systolic blood pressure (−7.0 ± 12.1 mmHg), diastolic blood pressure (−3.9 ± 6.8 mmHg), insulin (−1.8 ± 5.6 MUI/l) and HOMA‐IR (−0.5 ± 1.5 Units) decreased. In mutant genotype group, BMI (−2.0 ± 2.1 kg/m 2 ), weight (−3.6 ± 4.1 kg), waist circumference (−3.1 ± 4.1 cm), total cholesterol (−25.2 ± 19.6 mg/dl), LDL cholesterol (−16.6 ± 25.6 mg/dl), and tryglicerides (−26.6 ± 39.1 mg/dl) decreased. Only leptin levels have a significant decrease in wild genotype group (−6.6 ± 10.2 ng/ml) (25.1%). Conclusion C arriers of ASn656 allele have a different response than wild‐type obese, with a lack of decrease in insulin levels, leptin levels, and HOMA‐IR. However, obese patients with this mutant allele have a better lipid profile after weight loss.