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Keywords: cytochrome c oxidaseClose
J Exp Biol (2021) 224 (8): jeb241216.
Published: 16 April 2021
... lineage has higher anaerobic capacity substantiated by higher lactate dehydrogenase activity and higher apparent H 2 S oxidation rates, likely enabling them to tolerate H 2 S by escaping aquatic H 2 S in a terrestrial environment. However, Belize fish have increased cytochrome c oxidase and citrate...
J Exp Biol (2018) 221 (4): jeb171397.
Published: 20 February 2018
... respiratory flux through the ETS was decreased by ∼90% in acutely hypoxic animals. Relative to carbonyl cyanide p -trifluoro-methoxyphenylhydrazone-uncoupled total ETS flux, this functional decrease was observed equally across all components of the ETS except for complex IV (cytochrome c oxidase), at which...
J Exp Biol (2017) 220 (5): 844–855.
Published: 01 March 2017
... birds had heightened state-4 respiration and cytochrome c oxidase activity in their liver and muscle tissue compared with warm-acclimated birds indicating the cellular mechanisms underlying their adaptive thermogenesis. Temperature appears to be a primary cue for adjusting energy budget and thermogenic...
J Exp Biol (2011) 214 (11): 1888–1895.
Published: 01 June 2011
...). Though well studied in mammals, the mechanisms by which these factors control mitochondrial content have been less studied in lower vertebrates. We evaluated the role of these transcriptional regulators in seasonal changes in white muscle cytochrome c oxidase (COX) activity in eight local fish species...
J Exp Biol (2010) 213 (3): 445–452.
Published: 01 February 2010
... pro- and antioxidant metabolism may be confounded by variable activity levels among temperature groups, one species (killifish) was also subjected to a 9-day exercise acclimation. Oxidative capacity of glycolytic (skeletal) muscle (indicated by the activity of cytochrome c oxidase) was elevated by 1.5...
J Exp Biol (2008) 211 (8): 1262–1269.
Published: 15 April 2008
... cytochrome c oxidase activity (COX) and RNA expression of the respective genes unchanged. Cold incubation of hepatocytes from warm-acclimated fish failed to cause an increase of mitochondrial enzyme activities despite increased COX4 mRNA levels. Conversely, warm acclimation of hepatocytes from cold...
J Exp Biol (2007) 210 (1): 149–165.
Published: 01 January 2007
... returning to initial levels after warm acclimation. Cytochrome c oxidase (CCO) activity in the mitochondrial preparations decreased with warm acclimation. The thermal sensitivity of the ADP affinity was markedly modified during short-term warm exposure, when the ADP/O ratio increased, but warm acclimation...
J Exp Biol (2006) 209 (13): 2462–2471.
Published: 01 July 2006
... populations of the North Sea and the Barents Sea,respectively. In white muscle, cold acclimation caused a parallel increase in citrate synthase (CS) and in cytochrome c oxidase (COX) activities,but with a much larger effect in the cold eurythermal Arctic population. In liver, cold acclimation was accompanied...
J Exp Biol (2005) 208 (9): 1601–1610.
Published: 01 May 2005
...-activated receptor delta controls muscle development and oxidative capability. FASEB J. 17 , 2299 -2301. Lyons, C. N., Leary, S. C and Moyes, C. D. ( 2004 ). Bioenergetic remodeling during cellular differentiation:changes in cytochrome c oxidase regulation do not affect the metabolic phenotype...
J Exp Biol (2003) 206 (7): 1193–1200.
Published: 01 April 2003
... each season) for analysis of metabolic enzyme activity (lactate dehydrogenase, citrate synthase and cytochrome c oxidase). There were significant differences in mean daily body temperatures between winter (15.66±0.43°C; mean ± S.E.M.) and summer(29.34±0.21°C), and daily body temperatures fluctuated...