Objective:To examine the downregulalion of proinflammatory cytokines in a time dependant manner on carbon tetrachloride induced toxicity in experimental animals.Methods:CCl<sub>4</sub>(150μL/100 g) was ...Objective:To examine the downregulalion of proinflammatory cytokines in a time dependant manner on carbon tetrachloride induced toxicity in experimental animals.Methods:CCl<sub>4</sub>(150μL/100 g) was dissolved in com oil(1:1 v/v%) and administered orally,GroupⅠwas treated as normal control and received corn oil on 8th day.GroupⅡwas toxic control and was given a single dose of CCl<sub>4</sub> on 8th days.GroupⅢwas treated with Lygodium flexuosum(L.flexuosum) n-hexane extract(200 mg/kg) for 8 days and on 8th day a single dose of CCl<sub>4</sub> was received.GroupⅣ(negative contnil) received L.flexuosiim n-hexane extract(200 mg/kg) alone for 8 days.Results:Treatment with n-hexane extract prior to the administration of CCl<sub>4</sub> significantly prevented an increase in serum AST,ALT,LDH activity and lipid peroxidation and prevented the depletion of glutathione (GSH).Rats treated with L.flexuosum had reduced mRNA levels of TGF-β1,TNF-αand IL-1βgenes in liver of CCl<sub>4</sub> intoxicated rats when compared to CCl<sub>4</sub> control as evidenced by RT-PCR. Conclusions:The data suggest that L.flexuosum,a widely available fem,significantly reduces CCl<sub>4</sub> induced acute hepatotoxicily by down-regulating the expression of pro-inflammatory cytokines in rats.展开更多
Eight compounds were isolated from the aerial part of Lygodium japonicum,and identified as linarin,diosmin,acacetin-7-O-(6″-O-α-L-rhamnopyanosy)-β-sophoroside,nicotflorin,roseoside, vanillic acid,pentacosanoic acid...Eight compounds were isolated from the aerial part of Lygodium japonicum,and identified as linarin,diosmin,acacetin-7-O-(6″-O-α-L-rhamnopyanosy)-β-sophoroside,nicotflorin,roseoside, vanillic acid,pentacosanoic acid and hexacosanoic acid.展开更多
目的:研究海金沙黄酮(Flavones from Lygodiu mjaponicum,FLJ)的制备与体外抗氧化活性。方法:通过回流法萃取和大孔吸附树脂纯化,得到纯化的FLJ。以VC、BHT、芦丁和槲皮素为阳性对照,对羟基自由基、超氧阴离子自由基、烷基自由基的清除...目的:研究海金沙黄酮(Flavones from Lygodiu mjaponicum,FLJ)的制备与体外抗氧化活性。方法:通过回流法萃取和大孔吸附树脂纯化,得到纯化的FLJ。以VC、BHT、芦丁和槲皮素为阳性对照,对羟基自由基、超氧阴离子自由基、烷基自由基的清除率以及抑制油脂过氧化的能力进行研究。结果:FLJ对上述自由基均有一定的清除作用,对羟基自由基、超氧阴离子自由基清除能力弱于VC、芦丁和槲皮素;对油脂抗氧化作用强于BHT和VC。浓度为1.04mg/mL的FLJ和VC对烷基自由基的清除能力相当。FLJ的添加量在实验范围内与其抗氧化活性呈正相关。结论:FLJ具有明显的体外抗氧化活性。展开更多
基金supported by grants from kerala Forest Department, kerala India Financial assistance from Council of Scientific and Industrial Research(CSIR),New Delhi as Senior Research Fellowship to PJ Wills
文摘Objective:To examine the downregulalion of proinflammatory cytokines in a time dependant manner on carbon tetrachloride induced toxicity in experimental animals.Methods:CCl<sub>4</sub>(150μL/100 g) was dissolved in com oil(1:1 v/v%) and administered orally,GroupⅠwas treated as normal control and received corn oil on 8th day.GroupⅡwas toxic control and was given a single dose of CCl<sub>4</sub> on 8th days.GroupⅢwas treated with Lygodium flexuosum(L.flexuosum) n-hexane extract(200 mg/kg) for 8 days and on 8th day a single dose of CCl<sub>4</sub> was received.GroupⅣ(negative contnil) received L.flexuosiim n-hexane extract(200 mg/kg) alone for 8 days.Results:Treatment with n-hexane extract prior to the administration of CCl<sub>4</sub> significantly prevented an increase in serum AST,ALT,LDH activity and lipid peroxidation and prevented the depletion of glutathione (GSH).Rats treated with L.flexuosum had reduced mRNA levels of TGF-β1,TNF-αand IL-1βgenes in liver of CCl<sub>4</sub> intoxicated rats when compared to CCl<sub>4</sub> control as evidenced by RT-PCR. Conclusions:The data suggest that L.flexuosum,a widely available fem,significantly reduces CCl<sub>4</sub> induced acute hepatotoxicily by down-regulating the expression of pro-inflammatory cytokines in rats.
文摘Eight compounds were isolated from the aerial part of Lygodium japonicum,and identified as linarin,diosmin,acacetin-7-O-(6″-O-α-L-rhamnopyanosy)-β-sophoroside,nicotflorin,roseoside, vanillic acid,pentacosanoic acid and hexacosanoic acid.
文摘目的:研究海金沙黄酮(Flavones from Lygodiu mjaponicum,FLJ)的制备与体外抗氧化活性。方法:通过回流法萃取和大孔吸附树脂纯化,得到纯化的FLJ。以VC、BHT、芦丁和槲皮素为阳性对照,对羟基自由基、超氧阴离子自由基、烷基自由基的清除率以及抑制油脂过氧化的能力进行研究。结果:FLJ对上述自由基均有一定的清除作用,对羟基自由基、超氧阴离子自由基清除能力弱于VC、芦丁和槲皮素;对油脂抗氧化作用强于BHT和VC。浓度为1.04mg/mL的FLJ和VC对烷基自由基的清除能力相当。FLJ的添加量在实验范围内与其抗氧化活性呈正相关。结论:FLJ具有明显的体外抗氧化活性。