目的以果蝇为对象研究山楂提取物(hawthorn fruit extract,HFE)延长寿命和抗氧化的作用。方法收集2d龄的雄性和雌性果蝇,平均分为4组,饲喂添加不同浓度(0、0.5、1.5、4.5mg/ml)山楂提取物的培养基。研究HFE对果蝇生存寿命,超氧化物歧化...目的以果蝇为对象研究山楂提取物(hawthorn fruit extract,HFE)延长寿命和抗氧化的作用。方法收集2d龄的雄性和雌性果蝇,平均分为4组,饲喂添加不同浓度(0、0.5、1.5、4.5mg/ml)山楂提取物的培养基。研究HFE对果蝇生存寿命,超氧化物歧化酶(SOD)、过氧化氢酶(CAT)等抗氧化酶活力及抗氧化相关基因表达的影响;用急性实验研究HFE对果蝇生存时间的影响。结果与对照组相比,1.5、4.5mg/ml HFE能够明显改善果蝇的抗氧化能力,果蝇体内SOD、CAT活力较空白对照组都有显著增加,丙二醛(MDA)含量显著下降;4.5mg/ml HFE组果蝇体内SOD、CAT m RNA表达水平显著上调,雄蝇methuselah(MTH)呈下调趋势;急性实验中HFE组果蝇的寿命明显延长。结论 HFE在体内具有较强的抗氧化活性,并可能通过上调抗氧化基因表达实现延长果蝇寿命的作用。展开更多
The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solvent extraction and their components were analyzed and quantified by GC/MS. Then, the total anti-oxi...The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solvent extraction and their components were analyzed and quantified by GC/MS. Then, the total anti-oxidation capacity and simulated SOD activity were tested. Forty-four compounds in M. chapensis were identified and the main constituents are aromatic (11.057%), ester (5.041%) and terpenoid compounds (19.772%). Fifty-two compounds in M. foveolata were identified, and their main constituents are aromatic (21.293%), alcohol (17.403%), alkene (6.909%), ester (5.657%) and alkane compounds (5.134%). The results showed that the two oils have strong anti-oxidation capacity and simulated SOD activity. The total anti-oxidation capacities were the highest when the volatile oil from M. foveolata was diluted by 50 times and that from M.chapensis by 100 times. The simulated SOD activity of volatile oil from M. chapensis was higher than that from M. foveolata, and CuZn-SODs in the two oils held 73%-74% of the total SOD. These results will provide scientific foundation for the exploration of the bioactivity of M. chapensis and M. foveolata.展开更多
文摘目的以果蝇为对象研究山楂提取物(hawthorn fruit extract,HFE)延长寿命和抗氧化的作用。方法收集2d龄的雄性和雌性果蝇,平均分为4组,饲喂添加不同浓度(0、0.5、1.5、4.5mg/ml)山楂提取物的培养基。研究HFE对果蝇生存寿命,超氧化物歧化酶(SOD)、过氧化氢酶(CAT)等抗氧化酶活力及抗氧化相关基因表达的影响;用急性实验研究HFE对果蝇生存时间的影响。结果与对照组相比,1.5、4.5mg/ml HFE能够明显改善果蝇的抗氧化能力,果蝇体内SOD、CAT活力较空白对照组都有显著增加,丙二醛(MDA)含量显著下降;4.5mg/ml HFE组果蝇体内SOD、CAT m RNA表达水平显著上调,雄蝇methuselah(MTH)呈下调趋势;急性实验中HFE组果蝇的寿命明显延长。结论 HFE在体内具有较强的抗氧化活性,并可能通过上调抗氧化基因表达实现延长果蝇寿命的作用。
基金"Research and demonstration of ‘dot’ of ecological network of Chinese urban forest"(2001BA516A15-07) of China scientific andtechnological key projects in "tenth five-year" and "Regional test of arbor and ecological function trees afforested in city and town" (2002-17A)sponsored by State Forestry Administration.
文摘The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solvent extraction and their components were analyzed and quantified by GC/MS. Then, the total anti-oxidation capacity and simulated SOD activity were tested. Forty-four compounds in M. chapensis were identified and the main constituents are aromatic (11.057%), ester (5.041%) and terpenoid compounds (19.772%). Fifty-two compounds in M. foveolata were identified, and their main constituents are aromatic (21.293%), alcohol (17.403%), alkene (6.909%), ester (5.657%) and alkane compounds (5.134%). The results showed that the two oils have strong anti-oxidation capacity and simulated SOD activity. The total anti-oxidation capacities were the highest when the volatile oil from M. foveolata was diluted by 50 times and that from M.chapensis by 100 times. The simulated SOD activity of volatile oil from M. chapensis was higher than that from M. foveolata, and CuZn-SODs in the two oils held 73%-74% of the total SOD. These results will provide scientific foundation for the exploration of the bioactivity of M. chapensis and M. foveolata.
