There are many parameters that have effects the success of athletes, like exercise, motivation, determination, nutrition, all of which have genetic backgrounds. To have the optimal approach, all of these conditions should complement each other. In this study, we aimed to analyze and compare the monocarboxyl transferase 1 (MCT1) rs1049434 polymorphism, which is important to determine the lactate levels, in long and short distance running athletes. A total of 30 athletes, 15 of which were power athletes and 15 were endurance, were enrolled for the study. DNA isolations were carried out by using commercially available DNA isolation Kit, and genotyping process was by real-time PCR. Of the 15 power athletes, 14 (93%) and 1 (7%) athletes had AT and TT genotypes, respectively. We detected no AA genotype in power athletes. In endurance cohort, 4 (27%), 8 (53%) and 3 (20%) athletes had AA, AT and TT genotypes, respectively. When we count the alleles, A allele was counted as 14 (47%) and 16 (53%) in power and endurance athletes. For T allele, 16 (53%) and 14 (47%) were counted in power and endurance cohorts. No statistically significant difference was found between groups in the terms of genotype and allele. In our cohort, AT genotype was higher in both groups, whereas both alleles were equal in our cohort. Our basic goal is to be able to channel the athlete correctly and carry it to maximum success in a shorter period of time considering the genetic predisposition.

Objective: Genetic and environmental risk factors constitute the major part of the etiology of autism, a multifactorial disorder. In this study, we aimed to investigate the MTHFR (Methyltetrahydrofolate Reductase Gene) C677T polymorphism in autistic children who were subjected to glutamate - caseinous and GAPS (Bowel and Psychology Syndrome) diets and to determine whether autism was related to decrease of enzyme activity caused by 677T allele of MTHFR gene.
Materials and Methods: Thirty autistic and 90 healthy children were included in the study. DNA was obtained using a special commercial kit (GeneAll, Korea). Genotyping was performed by PCR - RFLP (Polymerase Chain Reaction-Restriction Fragment Length Polymorphism) protocol and images were obtained by agarose gel electrophoresis.
Results and Discussion: No statistically significant difference was found in the MTHFR 677T allele frequency as 13.33% in the patient group and 19.4% in the control group as p = 0.285. Due to the fact that the number of patients included in the study was not desired and not homogeneous, we recommend looking at MTHFR A1298C polymorphism and COMT (catechol-O-methyltransferase), BDNF (brain-derived neurotrophic factor), PTEN (phosphate and tensin homolog) genes.