| Positive effect of porphyrans on the lifespan and vitality of Drosophila melanogaster |
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| 作者姓名： | 赵婷婷 张全斌 綦慧敏 李智恩 |
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| 作者单位： | Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Qingdao 266071，China Graduate School of the Chinese Academy of Sciences Beijing 100039 China，Qingdao 266071，China，Qingdao 266071，China Graduate School of the Chinese Academy of Sciences Beijing 100039 China，Qingdao 266071，China |
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| 摘 要： | The effects of degraded porphyran (P1) and natural porphyran (P) on the lifespan and vitality of Drosophila melanogaster are studied. The porphyrans, added daily to the food medium at 0.2% and 1% concentrations, can significantly increase the lifespan in average of 55.79 and 58.23 d in 0.2% P1 diet females and 1% P1 diet males, extending by 12.29% and 8.60% over the corresponding controls, respectively. The effects of porphyrans on D. melanogaster in heat-stress condition were also examined, and found a remarkable increase in survival time. The results which are consistently associated with the use of porphyrans are related to their free radical scavenger action. Considerable increase in vitality demonstrated that vitalities of middle-aged fly (assessed by measuring their mating capacity) was observed after porphyrans addition. Therefore, porphyrans are effective in reducing the rate of aging, and P1 in low molecular weight is better than natural P.
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| 关 键 词： | 黑素原 金属卟啉 寿命 热应力 杂交能力 |
| 收稿时间： | 9 April 2007 |
| 修稿时间： | 2007-04-09 |
Positive effect of porphyrans on the lifespan and vitality of <Emphasis Type="Italic">Drosophila melanogaster</Emphasis> |
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| Zhao?Tingting,Zhang?Quanbin,Qi?Huimin,Li?Zhien.Positive effect of porphyrans on the lifespan and vitality of Drosophila melanogaster[J].Chinese Journal of Oceanology and Limnology,2007,25(4):373-377. |
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| Authors: | Zhao Tingting Zhang Quanbin Qi Huimin Li Zhien |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The effects of degraded porphyran (P1) and natural porphyran (P) on the lifespan and vitality of Drosophila melanogaster are studied. The porphyrans, added daily to the food medium at 0.2% and 1% concentrations, can significantly increase the lifespan in average of 55.79 and 58.23 d in 0.2% P1 diet females and 1% P1 diet males, extending by 12.29% and 8.60% over the corresponding controls, respectively. The effects of porphyrans on D. melanogaster in heat-stress condition were also examined, and found a remarkable increase in survival time. The results which are consistently associated with the use of porphyrans are related to their free radical scavenger action. Considerable increase in vitality demonstrated that vitalities of middle-aged fly (assessed by measuring their mating capacity) was observed after porphyrans addition. Therefore, porphyrans are effective in reducing the rate of aging, and P1 in low molecular weight is better than natural P. |
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| Keywords: | Drosophila melanogaster porphyrans lifespan heat-stress mating capacity |
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