Effects of adaptation to hypoxia on cytochrome levels in the brain and liver of rats |
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Authors: | A M Dudchenko L D Luk'yanova |
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Institution: | (1) Laboratory of Bioenergetics, Institute of Pharmacology, Russian Academy of Medical Sciences, Moscow |
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Abstract: | After a prolonged (for 30 days) adaptation of rats to intermittent hypoxia, their brains contained lowered levels of mitochondrial
cytochromes, despite an increase in the number of mitochondria in the brain tissue mass, along with similar levels of high-energy
compounds and more protein as compaired to the brains of unadapted controls. A mitochondrial population with novel properties
presumably emerged in the brain. These effects were all more strongly marked in rats with an initially low resistance to hypoxia.
In the liver of hypoxiaadapted animals, unlike in their brain, cytochrome levels in the mitochondrial and microsomal redox
chains were lowered and the biogenesis of mitochondria was much less intensive.
Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 120, N
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12, pp. 576–579, December, 1995 |
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Keywords: | adaptation hypoxia cytochromes brain liver individual resistance |
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