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Biomedical subjects

V Cosić

Publications and source records attributed to V Cosić.

At least 19 recordsLinked to original sources

Effect of raloxifene on lowering lipid parameters in patients with osteoporosis.

The aim of this study was to show the effect of raloxifene on the lowering of lipid parameters in patients with osteoporosis. New investigations introduced selective estrogen receptor modulators (SERMs), such as raloxifene, as a potent drug in the lowering of lipid parameters. Raloxifene is known as a substance that works well in preventing and treating osteoporosis. We investigated the effect of raloxifene on the lowering of lipid parameters (cholesterol and triglycerides) in 94 women who took 60 mg/day of raloxifene for the treatment of osteoporosis. We performed three measurements of cholesterol and triglycerides, at the beginning of the study and at 3 and 12 months. Bone mineral density (BMD) was measured at the begining and at 12 months; spine BMD increased 2.7%. The mean value of cholesterol was 6.6961 mmol/l at the beginning, 6.060 mmol/l at 3 months and 5.826 mmol/l at 12 months. The difference between mean values was statistically significant at p < 0.01. Mean values of triglycerides were 2.153 mmol/l at the beginning, 1.970 mmol/l at 3 months and 1.680 mmol/l at 12 months. The difference between mean values at 3 months was statistically significant at p < 0.05 and at 12 months at p < 0.01. We concluded that raloxifene had significant effects on lowering cholesterol and triglycerides in postmenopausal women and that raloxifene is the best choice in the treatment of osteoporosis and moderate lipid disorders.

Aged↗

Monotherapy with metformin: does it improve hypoxia in type 2 diabetic patients?

Metformin reduces blood glucose levels predominantly by inhibiting hepatic gluconeogenesis, although it also may enhance insulin receptor number or activity. The full effects of metformin are still poorly understood. In this study the effects of metformin on plasma xanthine oxidase (XO) activity, thiobarbituric acid-reactive substance (TBARS), lactate and fructosamine concentration as well as erythrocyte antioxidant enzyme activities were investigated in 46 patients with type 2 diabetes mellitus. All parameters were measured simultaneously just before metformin therapy (T0), 1 month (T1) and 2 months (T2) later. Results were compared with placebo and control group. We noted significant decrease in XO activity and in TBARS concentration (p<0.001) during monotherapy with metformin vs. placebo and T0 group. A significant correlation was observed between the activity of XO and the concentration of fructosamine (p<0.001). Erythrocyte glutathione peroxidase showed significantly lower activity in T2 group in comparison with T0 group (p<0.01). It is known that diabetic patients produce more TBARS as a result of enhanced free radical generation the source of which may also be the large amounts of XO produced following the conversion of xanthine dehydrogenase in hypoxic diabetic tissues. Thus, our results indirectly suggest that metformin can reduce toxic tissue damage through the inhibition on XO activity.

Antioxidants↗