Association of Three Single Nucleotide Polymorphisms in MTR and MTRR Genes with Lung Cancer in a Turkish Population

Aims: Folate metabolism plays a critical role in DNA methylation and synthesis. Polymorphisms in folate metabolism may affect enzyme activities and thereby affect the cancer risk. Methionine synthase (MTR) and methionine synthase reductase (MTRR) are critical enzymes for the folate cycle. In this study, possible associations between genetic variabilities in MTR and MTRR and susceptibility to lung cancer (LC) were investigated in a Turkish population

Antioxidant, Anti-acetylcholinesterase, Anti-inflammatory and DNA Protection Activities of Glaucium grandiflorum var. grandiflorum

In this study, antioxidant, antiacetylcholinesterase, anti-inflammatory, and DNA protecting activities of the aerial parts of Glaucium grandiflorum var. grandiflorum were evaluated. The lyophilized methanolic extract of the aerial parts of G. grandiflorum var. grandiflorum was investigated for potential in-vitro antioxidant properties in thiobarbituric acid test using the lipid peroxidation of liposomes, ferric ion reducing antioxidant power (FRAP), 1,1-diphenyl-2- picrylhydrazyl, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonate) free-radicals and hypochlorous acid scavenging assays. The extract demonstrated antioxidant activity in all the assays. The (AChE) inhibition capacity of the lyophilized methanolic extract at 320 mu g/mL (80.75 +/- 1.59%) was found to be strong and almost equal to the inhibition capacity of the positive control, galantamine (82.23 +/- 2.21%) at 25 mu g/mL. The significant AChE inhibitory activity suggests that the extract may be beneficial in the treatment of Alzheimer's disease. The extract also showed inhibitory activity against plasmid DNA damage (94%), as well as COX-2 69.05%, which is a target for many anti-inflammatory and cancer-preventive drugs. These results indicate that G. grandiflorum var. grandiflorum methanolic extract is an excellent source of compounds with antioxidant, anti-acetylcholinesterase and anti-inflammatory properties that prevent DNA damage

Paraoxonase-1 192/55 Polymorphisms and the Risk of Lung Cancer in a Turkish Population

WOS: 000292631300029PubMed ID: 21737645Aim: The purpose of the present study was to investigate the possible association of paraoxonase-1 (PON1) 192/55 polymorphisms with lung cancer (LC) risk in a Turkish population. Materials and Methods: A population-based, case-control study was carried out, including 223 patients with LC and 234 controls. The frequencies of PON1 192155 genotypes were compared in patient and control groups using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. Results: Distribution of PON1 192 R (+) genotype was found to be significantly higher in patients with LC compared to the controls (odds ratio: 1.497, 95% confidence interval: 1.034-2.166). This difference was especially noteworthy in patients with small cell carcinoma and squamous cell carcinoma. Conclusion: This is the first case-control study on the association between PON1 polymorphisms and LC susceptibility in a Turkish population. Our results suggest that PON1 192 polymorphsim is associated with an increased risk of LC in the Turkish population and may be a useful genetic marker for small cell and squamous cell carcinoma.Istanbul University [T-561/21102004, UDP-4443/15102009]This research was supported in part by the following grants: Istanbul University Scientific Research Projects, Project no: T-561/21102004 and UDP-4443/15102009