European Journal of Molecular & Clinical Medicine

Breast cancer arises when certain breast cells start to grow abnormally they  divide and replicate at a greater rate than normal cells. Regular exercise helps to reduce breast cancer by 10 to 20 percent. AIM: To analyse the inhibitory potential of endogenous over expression of superoxide dismutase (SOD) on apoptotic markers in breast cancer through silico analysis.
    The molecular docking analysis is a bioinformatic study. The endogenous substance SOD which is secreted after exercise is used as a target protein. The interaction of SOD with proteins relevant to breast cancer namely Bcl-2, Bcl-xl, Bax are included for docking analysis. The protein structure is retrieved using protein data bank, protein protein docking done using patch dock server followed by visualisation of protein -protein interaction using pymol.

This study aimed to assess the effects of lead treatment on zebrafish embryo development. Embryos were treated with lead in various concentration at 0.1 μg/l, 1 μg/l, 10 μg/l, 20 μg/l, 100 μg/l. The results demonstrated that there was no difference in ratio of live embryo between control group and lead treatment group for 24 h. However, the live ratio of embryo was reduced in the high concentration of lead treatment from 72 h to 168 h. Lead treatment induced an increase heart rate in zebrafish embryos for 48 h and 72 h. In addition, the down-regulation of GADD45A (Growth arrest and DNA damage-inducible protein 45 alpha), GADD45G (growth arrest and DNA-damage-inducible 45 gamma), SOD1 (superoxide dismutase 1) and SOD2 (superoxide dismutase 2) was observed in zebrafish embryos for 168 h of lead treatment.

Oxidative stress is known to be one of the major factors involved in the development and progression of cancer. Superoxide dismutase and Catalase plays an important role in the primary defence against oxidative stress. The present study was therefore undertaken to investigate the association between polymorphism of superoxide dismutase (SOD1, SOD2, SOD3) and Catalase (CAT1 & CAT2) and the gastro intestinal cancer risk in the rural population of the south western Maharashtra. The present case-control study included 200 confirmed gastrointestinal (GI) cancer patients and 400 age and gender matched healthy controls. The polymorphism in the Superoxide Dismutase and Catalase genes was studied out by PCR-RFLP method. When we studied the genotypic frequency of SOD1, SOD2, & SOD3, SOD2 (rs1141718) showed the negative association with the GI cancer risk [OR: 0.3097, CI: 0.1727-0.5553, p <0.0001]. There was no significant association found between SOD1 & SOD3 of superoxide dismutase and CAT1 & CAT2 of Catalase gene polymorphism and susceptibility of GI cancer. The present study shows no significant association of SOD1 (G allele of rs 2070424), SOD3 (A allele of rs2536512), CAT1 (T allele of rs7943316) and CAT2 (rs1001179) with the development of gastrointestinal cancer in the rural population of south western Maharashtra from India. However, SOD2 (rs1141718) shows the negative association with the development of GI cancer.