This study is the first genetic epidemiology study that investigated the allelic frequencies of MTHFR and FVII polymorphisms associated with metabolic syndromes.
DNA was extracted from the whole blood of 192 natural postmenopausal women (40 to 65 years) screened for the METS and tested for three gene SNPs related to obesity: the fat mass obesity (FTO: rs9939609) and the methylenetetrahydrofolate reductase (MTHFR: C677T and A1298C).
Several genes showed strong evidence for an association with MetS in patients with schizophrenia, including the fat mass and obesity associated gene (FTO), leptin and leptin receptor genes (LEP, LEPR), methylenetetrahydrofolate reductase (MTHFR) gene and the serotonin receptor 2C gene (HTR2C).
We studied the associations between the serum uric acid concentration and the following: (i) demographic, anthropometric and other variables previously reported to be associated with serum uric acid concentrations; (ii) the presence of metabolic syndrome and the levels of metabolic syndrome components; and (iii) selected genetic variants of the MTHFR (c.665C>T, c.1286A>C), SLC2A9 (c.844G>A, c.881G>A) and ABCG2 genes (c.421C>A).
From this work, genetic variation within both the methylenetetrahydrofolate reductase (MTHFR) gene and the catechol-O-methyltransferase (COMT) gene has been associated with an increased risk of metabolic syndrome in schizophrenia patients treated with AAPs.
Subjects were screened for the metabolic syndrome (National Cholesterol Education Program Adult Treatment Panel III criteria) and MTHFR677C/T, MTHFR1298A/C, and Val158Met genotypes.
We found that genotype Met/Met of the Val66Met polymorphism of the brain-derived neurotrophic factor gene was positively associated with depressive disorder (P < 0.05), but we were not able to find any significant associations of both the depressive disorder and metabolic syndrome with the remaining polymorphisms studied (methylenetetrahydrofolate reductase 677CT, methylenetet rahydrofolate reductase 1298AC, endothelial nitric oxide synthase Glu298Asp, and tyrosine hydroxylase).
Therefore, a cross-sectional study was conducted to investigate the association of homocysteinemia with MS components; folate and cobalamin biochemical and dietary indices of nutritional status; and genetic, anthropometric, and lifestyle factors in Brazilian subjects with MS. Waist circumference; body fat; body mass index; insulin resistance; lipid profiles; glycemia; uricemia; insulinemia; erythrocyte folate and plasma homocysteine; folate and cobalamin concentrations; C677T polymorphism in the methylenetetrahydrofolate reductase (MTHFR) gene; coffee and alcohol intake; and smoking were determined in 63 subjects (24 males and 39 females) with MS. No difference in homocysteine plasma was observed between sexes.
Metabolic syndrome and insulin resistance in schizophrenia patients receiving antipsychotics genotyped for the methylenetetrahydrofolate reductase (MTHFR) 677C/T and 1298A/C variants.