Age- and brain region-specific differences in mitochondrial bioenergetics in Brown Norway rats.
Age- and brain region-specific differences in mitochondrial bioenergetics in Brown Norway rats.
复制标题
棕色挪威大鼠线粒体生物能学的年龄和大脑区域特异性差异。
DOI:
10.1016/j.neurobiolaging.2016.02.027
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发表时间:
2016
影响因子:
4.2
通讯作者:
Kodavanti,PrasadaRaoS
中科院分区:
文献类型:
--
作者:
Pandya,JigneshD;Royland,JoyceE;MacPhail,RobertC;Sullivan,PatrickG;Kodavanti,PrasadaRaoS
Mitochondria are central regulators of energy homeostasis and play a pivotal role in mechanisms of cellular senescence. The objective of the present study was to evaluate mitochondrial bioenergetic parameters in 5 brain regions (brain stem [BS], frontal cortex, cerebellum, striatum, hippocampus [HIP]) of 4 diverse age groups (1 month [young], 4 months [adult], 12 months [middle-aged], 24 months [old age]) to understand age-related differences in selected brain regions and their possible contribution to age-related chemical sensitivity. Mitochondrial bioenergetic parameters and enzyme activities were measured under identical conditions across multiple age groups and brain regions in Brown Norway rats (n = 5/group). The results indicate age- and brain region–specific patterns in mitochondrial functional endpoints. For example, an age-specific decline in ATP synthesis (State III respiration) was observed in BS and HIP. Similarly, the maximal respiratory capacities (State V1and V2) showed age-specific declines in all brain regions examined (young > adult > middle-aged > old age). Amongst all regions, HIP had the greatest change in mitochondrial bioenergetics, showing declines in the 4, 12, and 24-months age groups. Activities of mitochondrial pyruvate dehydrogenase complex and electron transport chain complexes I, II, and IV enzymes were also age and brain region specific. In general, changes associated with age were more pronounced with enzyme activities declining as the animals aged (young > adult > middle-aged > old age). These age- and brain region-specific observations may aid in evaluating brain bioenergetic impact on the age-related susceptibility to environmental chemical stressors.
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影响因子:
3.9
作者:
M. Kaplan;G. Fried
通讯作者:
G. Fried
DOI:
--
发表时间:
1952
期刊:
影响因子:
--
作者:
S. Wright
通讯作者:
S. Wright
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
G. L. Sharp
通讯作者:
G. L. Sharp
DOI:
--
发表时间:
1963
期刊:
影响因子:
--
作者:
J. F. Kidwell
通讯作者:
J. F. Kidwell
影响因子:
1.5
作者:
B. Yoo
通讯作者:
B. Yoo