| 查看: 158 | 回复: 1 | |||
| 当前主题已经存档。 | |||
[交流]
證明老化與氧化關系的重要研究
|
|||
|
"Extension of murine lifespan by overexpression of catalase targeted to mitochondria." Science, 308:1909-11, 2005. Schriner SE, Linford NJ, Martin GM, Treuting P, Ogburn CE, Emond M, Coskun PE, Ladiges W, Wolf N, Van Remmen H, Wallace DC, Rabinovitch PS. Department of Genome Sciences, University of Washington, Seattle, WA 91895, USA. To determine the role of reactive oxygen species in mammalian longevity, we generated transgenic mice that overexpress human catalase localized to the peroxisome, the nucleus, or mitochondria (MCAT). Median and maximum life spans were maximally increased (averages of 5 months and 5.5 months, respectively) in MCAT animals. Cardiac pathology and cataract development were delayed, oxidative damage was reduced, H2O2 production and H2O2-induced aconitase inactivation were attenuated, and the development of mitochondrial deletions was reduced. These results support the free radical theory of aging and reinforce the importance of mitochondria as a source of these radicals. The finding: Peter Rabinovitch at the University of Washington at Seattle and his colleagues found that transgenic mice overexpressing the antioxidant enzyme catalase in their mitochondria lived nearly 20% longer and exhibited less heart disease and other age-related declines. This supported the free-radical theory of aging. |
回复此楼» 猜你喜欢
化工申博
已经有3人回复
-
申博自荐
已经有3人回复
-
化学工程及工业化学论文润色/翻译怎么收费?
已经有278人回复
-
广西民族大学化学化工学院化学工程与技术学硕，材料化工专硕调剂名额充足！
已经有0人回复
-
透明质酸酶的作用机制：如何实现药物递送
已经有0人回复
-
爱思维尔旗下LWT投稿
已经有9人回复
-
替拉扎明为缺氧选择性细胞毒药物研究提供新思路
已经有0人回复
-
拉坦前列腺素(Latanoprost)：前列腺素F2α衍生物如何成为青光眼一线用药
已经有0人回复
-
卟啉家族中的明星分子：MESO-四(3,5-二溴-4-羟基苯基)卟啉的性质与制备
已经有1人回复
-
宠物寄生虫防治：氟雷拉纳阻断GABA受体，持效12周驱杀跳蚤蜱虫
已经有0人回复
-
为呼吸打开通道：依伐卡托的科学之旅
已经有0人回复
2楼2007-03-23 07:47:47