Altered acylated ghrelin response to food intake in congenital generalized lipodystrophy

Background. Today excess body weight and obesity are considered an epidemic affecting millions of people around the world. Excess body weight in children increases the risk of development of obesity in adult age. Food preferences are formed in childhood and influenced by environmental, cultural, and genetic factors; the latter remaining unclear.Objective. The study aimed at investigating the association of the rs5400 polymorphic locus of the SLC2A2 (GLUT2) gene and the rs4684677 polymorphic locus of the GHRL gene with excess body weight and preference for carbohydrates in preschool and primary school-aged children.Methods. The study enrolled 92 patients aged between 3 and 11 years; 56 patients gave consent for the assessment of their food preferences. Genotyping of polymorphic loci in the SLC2A2 and GHRL genes was carried out for all patients.Results. All patients were divided into groups depending on their eating habits (the ratio of dietary carbohydrates), as well as the presence of excess body weight. The probability of consumption of excessive amounts of carbohydrates appeared to be higher for carriers of the G/A genotype in the SLC2A2 gene as compared to the G/G carriers (odds ratio: 9.3; 95 % confidence interval [1.8–47.3]; p = 0.004). No statistically significant differences in the distribution of genotypes of the GHRL gene have been found between the group with carbohydrate overconsumption and the control group (p > 0.05). Likewise, no statistically significant differences were found in the evaluation of association of the rs5400 polymorphism in the SLC2A2 gene and the rs4684677 polymorphism in the GHRL gene with excess body weight in children (p > 0.05).Conclusion. There are genetic predictors of obesity in adult population. Thus, for example, the rs5400 polymorphism in the SLC2A2 gene and rs4684677 in the GHRL gene are the risk factors for excess body weight. Our study in a pediatric population did not reveal any association of the presence of polymorphic loci in the above-mentioned genes with obesity in children. The association of the G/A genotype of the SLC2A2 gene with excess carbohydrate consumption was revealed: the odds ratio for excess carbohydrate consumption was higher in the G/A carriers as compared to the G/G carriers: OR = 9.3; CI = [1.8–47.3]; p = 0.004. This finding is probably related to the fact that these genetic variants are not risk factors for obesity in childhood. These issues require further investigation within the framework of personalized medicine.

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Changes in Circulating Acylated Ghrelin and Neutrophil Elastase in Diabetic Retinopathy

Trotta,

Gesualdo,

Russo

et al. 2024

Medicina

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Background and Objectives: The role and the levels of ghrelin in diabetes-induced retinal damage have not yet been explored. The present study aimed to measure the serum levels of total ghrelin (TG), and its acylated (AG) and des-acylated (DAG) forms in patients with the two stages of diabetic retinopathy (DR), non-proliferative (NPDR) and proliferative (PDR). Moreover, the correlation between serum ghrelin and neutrophil elastase (NE) levels was investigated. Materials and Methods: The serum markers were determined via enzyme-linked immunosorbent assays in 12 non-diabetic subjects (CTRL), 15 diabetic patients without DR (Diabetic), 15 patients with NPDR, and 15 patients with PDR. Results: TG and AG serum levels were significantly decreased in Diabetic (respectively, p < 0.05 and p < 0.01 vs. CTRL), NPDR (p < 0.01 vs. Diabetic), and in PDR patients (p < 0.01 vs. NPDR). AG serum levels were inversely associated with DR abnormalities (microhemorrhages, microaneurysms, and exudates) progression (r = −0.83, p < 0.01), serum neutrophil percentage (r = −0.74, p < 0.01), and serum NE levels (r = −0.73, p < 0.01). The latter were significantly increased in the Diabetic (p < 0.05 vs. CTRL), NPDR (p < 0.01 vs. Diabetic), and PDR (p < 0.01 vs. PDR) groups. Conclusions: The two DR stages were characterized by decreased AG and increased NE levels. In particular, serum AG levels were lower in PDR compared to NPDR patients, and serum NE levels were higher in the PDR vs. the NPDR group. Together with the greater presence of retinal abnormalities, this could underline a distinctive role of AG in PDR compared to NPDR.

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Altered acylated ghrelin response to food intake in congenital generalized lipodystrophy

Cited by 3 publications

References 65 publications

Plasma signatures of Congenital Generalized Lipodystrophy patients identified by untargeted lipidomic profiling are not changed after a fat-containing breakfast meal

Plasma signatures of Congenital Generalized Lipodystrophy patients identified by untargeted lipidomic profiling are not changed after a fat-containing breakfast meal

Study of association of the rs5400 polymorphic locus in the SLC2A2 (GLUT2) gene and the rs4684677 polymorphic locus in the GHRL gene with excess body weight and preference for carbohydrates in preschool and primary school-aged children

Changes in Circulating Acylated Ghrelin and Neutrophil Elastase in Diabetic Retinopathy

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