Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Brain Researcharrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Brain Research
Article . 2011 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
versions View all 2 versions
addClaim

Cerebral metabolism after forced or voluntary physical exercise

Authors: Harish, Kinni; Miao, Guo; Jamie Y, Ding; Sanjay, Konakondla; David, Dornbos; Raymond, Tran; Murali, Guthikonda; +1 Authors

Cerebral metabolism after forced or voluntary physical exercise

Abstract

The pathophysiology of stroke, a leading cause of morbidity and mortality, is still in the process of being understood. Pre-ischemic exercise has been known to be beneficial in reducing the severity of stroke-induced brain injury in animal models. Forced exercise with a stressful component, rather than voluntary exercise, was better able to induce neuroprotection. This study further determined the changes in cerebral metabolism resulting from the two methods of exercise (forced versus voluntary). Adult male Sprague-Dawley rats were randomly assigned to 3 groups: the control group (no exercise), the forced treadmill exercise group, and the voluntary running wheel exercise group. In order to measure the extent of cerebral metabolism in animals with different exercise regimens, mRNA levels and protein expression of glucose transporter 1 and glucose transporter 3 (GLUT-1 and GLUT-3), phosphofructokinase (PFK), lactate dehydrogenase (LDH), and adenosine monophosphate kinase (AMPK) were measured utilizing real-time reverse transcription polymerase chain reaction (PCR) analysis as well as Western blot analysis. Phosphorylated AMPK activity was also measured using an ELISA activity kit, and hypoxic inducible factor (HIF)-1α was measured at transcription and translation levels. The data show that the forced exercise group had a significant (p < 0.05) increase in cerebral glycolysis, including expressions of GLUT-1, GLUT-3, PFK, LDH, phosphorylated AMPK activity and HIF-1α, when compared to the voluntary exercise and the control groups. Our results suggest that the effects of different exercise on HIF-1α expression and cerebral glycolysis may provide a possible reason for the discrepancy in neuroprotection, with forced exercise faring better than voluntary exercise through increased cerebral metabolism.

Keywords

Cerebral Cortex, Male, Glucose Transporter Type 1, Glucose Transporter Type 3, L-Lactate Dehydrogenase, Reverse Transcriptase Polymerase Chain Reaction, Blotting, Western, Hypoxia-Inducible Factor 1, alpha Subunit, Rats, Rats, Sprague-Dawley, Phosphofructokinases, Physical Conditioning, Animal, Animals, RNA, Messenger, Glycolysis

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    77
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
77
Top 10%
Top 10%
Top 10%
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!