Measuring cytochrome c redox state using resonance Raman spectroscopy to determine metabolic rates in electron transport chain when exposed to light

Author(s):  
Joshua W. Lalonde ◽  
Sean P. O'Connor ◽  
Gary D. Noojin ◽  
Cherry C. Gonzales ◽  
Vladislav V. Yakovlev ◽  
...  
Biochemistry ◽  
1993 ◽  
Vol 32 (27) ◽  
pp. 6923-6927 ◽  
Author(s):  
Stephen R. Lynch ◽  
Richard H. Carter ◽  
Robert A. Copeland

2011 ◽  
pp. 329-336 ◽  
Author(s):  
J.-L. WU ◽  
Q.-P. WU ◽  
Y.-P. PENG ◽  
J.-M. ZHANG

Accumulation of oxidative damage has been implicated to be a major causative factor in the decline in physiological functions that occur during the aging process. The mitochondrial respiratory chain is a powerful source of reactive oxygen species (ROS), considered as the pathogenic agent of many diseases and aging. L-malate, a tricarboxylic acid cycle intermediate, plays an important role in transporting NADH from cytosol to mitochondria for energy production. Previous studies in our laboratory reported L-malate as a free radical scavenger in aged rats. In the present study we focused on the effect of L-malate on the activities of electron transport chain in young and aged rats. We found that mitochondrial membrane potential (MMP) and the activities of succinate dehydrogenase, NADH-cytochrome c oxidoreductase and cytochrome c oxidase in liver of aged rats were significantly decreased when compared to young control rats. Supplementation of L-malate to aged rats for 30 days slightly increased MMP and improved the activities of NADH-dehydrogenase, NADH-cytochrome c oxidoreductase and cytochrome c oxidase in liver of aged rats when compared with aged control rats. In young rats, L-malate administration increased only the activity of NADH-dehydrogenase. Our result suggested that L-malate could improve the activities of electron transport chain enzymes in aged rats


2009 ◽  
Vol 113 (8) ◽  
pp. 2492-2497 ◽  
Author(s):  
Marc Grosserueschkamp ◽  
Marcel G. Friedrich ◽  
Markus Plum ◽  
Wolfgang Knoll ◽  
Renate L. C. Naumann

2003 ◽  
Vol 8 (7) ◽  
pp. 699-706 ◽  
Author(s):  
Manliang Feng ◽  
Hiroyasu Tachikawa ◽  
Xiaotang Wang ◽  
Thomas D. Pfister ◽  
Alan J. Gengenbach ◽  
...  

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