Effect of one month duration ketogenic and non-ketogenic high fat diets on mouse brain bioenergetic infrastructure. J Bioenerg Biomembr 2015 Apr;47(1-2):1-11
Date
08/12/2014Pubmed ID
25104046Pubmed Central ID
PMC4320989DOI
10.1007/s10863-014-9570-zScopus ID
2-s2.0-84922566816 (requires institutional sign-in at Scopus site) 21 CitationsAbstract
Diet composition may affect energy metabolism in a tissue-specific manner. Using C57Bl/6J mice, we tested the effect of ketosis-inducing and non-inducing high fat diets on genes relevant to brain bioenergetic infrastructures, and on proteins that constitute and regulate that infrastructure. At the end of a one-month study period the two high fat diets appeared to differentially affect peripheral insulin signaling, but brain insulin signaling was not obviously altered. Some bioenergetic infrastructure parameters were similarly impacted by both high fat diets, while other parameters were only impacted by the ketogenic diet. For both diets, mRNA levels for CREB, PGC1α, and NRF2 increased while NRF1, TFAM, and COX4I1 mRNA levels decreased. PGC1β mRNA increased and TNFα mRNA decreased only with the ketogenic diet. Brain mtDNA levels fell in both the ketogenic and non-ketogenic high fat diet groups, although TOMM20 and COX4I1 protein levels were maintained, and mRNA and protein levels of the mtDNA-encoded COX2 subunit were also preserved. Overall, the pattern of changes observed in mice fed ketogenic and non-ketogenic high fat diets over a one month time period suggests these interventions enhance some aspects of the brain's aerobic infrastructure, and may enhance mtDNA transcription efficiency. Further studies to determine which diet effects are due to changes in brain ketone body levels, fatty acid levels, glucose levels, altered brain insulin signaling, or other factors such as adipose tissue-associated hormones are indicated.
Author List
Selfridge JE, Wilkins HM, E L, Carl SM, Koppel S, Funk E, Fields T, Lu J, Tang EP, Slawson C, Wang W, Zhu H, Swerdlow RHAuthor
Lezi E PhD Assistant Professor in the Cell Biology, Neurobiology and Anatomy department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AnimalsBrain
DNA, Mitochondrial
Diet, Ketogenic
Dietary Fats
Energy Metabolism
Mice
Nerve Tissue Proteins
Time Factors
