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Abstract

Purpose: The present study focused on the role of primary metabolites, antioxidant activities in black gram (Vigna mungo L. Hepper) variety Vamban-4 under the impact of gamma irradiation.

Materials and methods: The black gram seeds were irradiated at a different dose of gamma rays viz., 200, 400, 600, 800, 1000 and 1200 Gray (Gy), and analyzed the changes of biochemical and antioxidant contents.

Results: Biochemical contents increased with increasing doses up to 800?Gy and reduced at higher dose viz.,1000 and 1200?Gy of gamma-ray treatment, while malondialdehyde content increased at higher dose 1200?Gy compared to control, this indicates that the formation of more lipid peroxidation at higher radiation level. Gamma irradiation enhanced the activity of antioxidant enzymes such as catalase, peroxidase and superoxide dismutase with increasing doses rather than control plants. These studies depict that the effect of gamma irradiation on seeds increased the free radicals compared to control, which emphasize by the Electron spin resonance spectroscopy (ESR). Gamma irradiated seed samples contain more fractions of protein, lipids, amino acid and polysaccharides compared to control plants observed from the Fourier infrared transform spectroscopy (FTIR).

Conclusion: The present result concludes that cellular metabolites and the antioxidant enzymes increased and these alterations of metabolism due to the effect of gamma rays which induced free radical production in seeds and plants grown under irradiation stress. These results confirm that the exposure of gamma irradiation produced free radicals as well as counteract by antioxidant enzymes and in addition to that accumulation and alteration of primary metabolites.  相似文献   
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Objective: Obesity and hyperlipidemia is the major cause of many pathological diseases with an increase side effects using allopathic drugs. The present study focuses on the effect of Ixora coccinea on Triton X-100 induced hyperlipidemia in rats and associated complications. Methodology: In vitro radical scavenging activity of I. coccinea was assessed using DPPH, FRAP and hydrogen peroxide. In vivo antiobesity and antihyperlipidimic activity of I. coccinea was tested in Triton X-100 induced hyperlipidemic rats and assessed for its biochemical parameters in blood and tissue samples. The relationship between physiological responses and regulation of body temperature was investigated by using animal surface temperature images captured with infrared camera. Results: The results of mineral analysis, antioxidant, total flavonoid and phenolic content represented high amount of mineral and had the potential to scavenge free radicals tested with DPPH, FRAP and hydrogen peroxide radicals with dose dependent activity. The highest activity was observed in aqueous extract, DPPH with 71.5% inhibition, FRAP with 56.8%, H2O2 with 33% activity at 100?μg/mL concentration. Triton X-100 induced hyperlipidemic rats when treated with I. coccinea aqueous extract showed significant activity by regulating the biochemical parameters and maintaining the lipid profile by decreasing TC, LDL-C, VLDL-C, TG and improving HDL-C levels. Similarly, the elevated levels of creatinine, urea, uric acid, AST, ALT, ALP due to induction of hyperlipidemia, were brought back to near normal levels after treatment with I. coccinea. The levels of tissue anti-oxidants enzymes like SOD and CAT were also found to be improved in treated I. coccinea groups. The whole body asymmetrical temperature distribution analysis showed that significant decreases in temperature was observed in obesity induced groups but a gradual increase in temperature (2% – –5%) was observed after treatment. Conclusion: Thus, the results indicated that I. coccinea can be a drug of choice to decrease the risk of complications associated with hyperlipidemia and obesity.  相似文献   
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