Drahota 2005 Cell Biochem Biophys: Difference between revisions
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|year=2005 | |year=2005 | ||
|journal=Cell. Biochem. Biophys. | |journal=Cell. Biochem. Biophys. | ||
|abstract=Cytochrome-''c'' oxidase (COX) activity of the rat heart was two- to sevenfold activated when the membrane integrity was disrupted by hypotonic swelling, freezing-thawing, or a detergent, indicating that a large portion of COX capacity in intact mitochondria is not active. The effect of detergent was tested in heart mitochondria isolated from 1-, 5-, 15-, 29-, and 60-d-old rats; activation by detergent was up to 20-fold in 1-d-old animals, whereas in mitochondria from 60-d-old rats it was only 7-fold. Our data indicate that the rat heart exhibits significant developmental changes dependent on downregulation of COX activity in the neonatal period. | |abstract=Cytochrome-''c'' oxidase (COX) activity of the rat heart was two- to sevenfold activated when the membrane integrity was disrupted by hypotonic swelling, freezing-thawing, or a detergent, indicating that a large portion of COX capacity in intact mitochondria is not active. The effect of detergent was tested in heart mitochondria isolated from 1-, 5-, 15-, 29-, and 60-d-old rats; activation by detergent was up to 20-fold in 1-d-old animals, whereas in mitochondria from 60-d-old rats it was only 7-fold. Our data indicate that the rat heart exhibits significant developmental changes dependent on downregulation of COX activity in the neonatal period. | ||
|keywords=Rat heart, Postnatal development, Cytochrome-c oxidase, Mitochondria, Detergent | |keywords=Rat heart, Postnatal development, Cytochrome-c oxidase, Mitochondria, Detergent | ||
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{{Labeling | {{Labeling | ||
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|topics=Respiration; OXPHOS; ETS Capacity | |topics=Respiration; OXPHOS; ETS Capacity | ||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
}} | }} | ||
Revision as of 11:46, 20 October 2010
| Drahota Z, Milerova M, Stieglerova A, Skarka L, Houstek J, Ostadal B (2005) Development of cytochrome-c oxidase in rat heart. Cell Biochem. Biophys. 43: 87-94. |
Drahota Z, Milerova M, Stieglerova A, Skarka L, Houstek J, Ostadal B (2005) Cell. Biochem. Biophys.
Abstract: Cytochrome-c oxidase (COX) activity of the rat heart was two- to sevenfold activated when the membrane integrity was disrupted by hypotonic swelling, freezing-thawing, or a detergent, indicating that a large portion of COX capacity in intact mitochondria is not active. The effect of detergent was tested in heart mitochondria isolated from 1-, 5-, 15-, 29-, and 60-d-old rats; activation by detergent was up to 20-fold in 1-d-old animals, whereas in mitochondria from 60-d-old rats it was only 7-fold. Our data indicate that the rat heart exhibits significant developmental changes dependent on downregulation of COX activity in the neonatal period. • Keywords: Rat heart, Postnatal development, Cytochrome-c oxidase, Mitochondria, Detergent
Labels:
Organism: Rat
Preparation: Isolated Mitochondria Enzyme: Complex IV; Cytochrome c Oxidase Regulation: Respiration; OXPHOS; ETS Capacity
HRR: Oxygraph-2k
