Nutrients play a fundamental role as regulators of the activity of enzymes involved in liver metabolism. In the general population, the action of nutrients may be affected by gene polymorphisms. Therefore, individualization of a diet for individuals with fatty liver seems to be a fundamental step in nutritional strategies. In this study, we tested the nutrient-induced insulin output ratio (NIOR), which is used to identify the correlation between the variants of genes and insulin resistance. We enrolled 171 patients, Caucasian men (n = 104) and women (n = 67), diagnosed with non-alcoholic fatty liver disease (NAFLD). From the pool of genes sensitive to nutrient content, we selected genes characterized by a strong response to the NIOR. The polymorphisms included Adrenergic receptor (b3AR), Tumor necrosis factor (TNFα), Apolipoprotein C (Apo C III). Uncoupling Protein type I (UCP-1), Peroxisome proliferator activated receptor γ2 (PPAR-2) and Apolipoprotein E (APOEs). We performed three dietary interventions: a diet consistent with the results of genotyping (NIOR (+)); typical dietary recommendations for NAFLD (Cust (+)), and a diet opposite to the genotyping results (NIOR (−) and Cust (−)). We administered the diet for six months. The most beneficial changes were observed among fat-sensitive patients who were treated with the NIOR (+) diet. These changes included improvements in body mass and insulin sensitivity and normalization of blood lipids. In people sensitive to fat, the NIOR seems to be a useful tool for determining specific strategies for the treatment of NAFLD.
Liver steatosis reduction is associated with changes in fatty acid profiles, and these changes may reflect an alteration in fatty acid synthesis and metabolism. These findings may help better understand regression of nonalcoholic fatty liver disease.
Introduction: Nonalcoholic fatty liver disease (NAFLD) is connected with high risk of metabolic disorders, such as: metabolic syndrome, type 2 diabetes, dyslipidemia and independently, coronary heart disease (CHD). Materials and methods: A group of 108 Caucasian individuals (39 women and 69 men) aged 20-77 years with NAFLD were prospectively enrolled in the study. The diagnosis of NAFLD was conirmed during the irst appointment using ultrasonography. The liver serum tests such as alanine aminotransferase and aspartate aminotransferase levels were taken into account, as well. All of the tests and measurements were taken at the begining and after 6 month of dieting. Anthropometric tools (body mass index -BMI, waist circumference -WC, waist to hip ratio -WHR, waist to height ratio -WHtR, coinicity index -C -Index) were examined in relation to metabolic risk factors of CHD (increased: triacylglycerols, low density lipoprotein, total cholesterol, glycemia and low high density lipoprotein). Results: Statistical signi icant reduction of body weight, BMI, WC, WHR, WHtR and C -Index (p < 0.05) contributed to the improvement of serum triacylglycerols in both sexes (p < 0.05). Indicators of abdominal obesity (WC, WHR, WHtR, C -Index) correlated signi icantly with serum glucose (p < 0.05) both before and after the diet and with serum lipids, either before or after the diet (p < 0.05), in both sexes. Conclusions: It seems bene icial to spread the use of anthropometric tools, especially C -Index and WHtR, in primary health care practice for either early prevention or prediction of metabolic CHD risk occurrence, and its potential fatal consequences among patients with NAFLD or with other metabolic disorders.
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