Cited by 98Neurological Disorders and TreatmentsNeurological Disease Mechanisms and TreatmentsMitochondrial Function and Pathology

Ischemia and the aging brain — studies on glucose and energy-metabolism in rat cerebral-cortex

Hoyer, Siegfried, Krier, Claude·1986·Neurobiology of Aging

Abstract

Age has been considered to be a crucial risk factor for brain ischemic insults and their mortality. Brain ischemia has been found to cause severe abnormalities in glucose metabolism, energy metabolism and related metabolism, thus damaging the structure and function of brain cells. To study the effect of age and ischemia on brain glucose and energy metabolism, investigations were performed on one-and two-year-old male Wistar rats, the latter of which can be designated as aged. In both age groups, ischemia resulted in a depletion of glucose, OAA, ATP AND CRP, a diminution of Pyr, Citr and alpha-Keto and an accumulation of FDP, Lact, Succ, ADP and AMP in brain cortex. During ischemia, differences between the two age groups became most obvious in the concentrations of Glu, FDP, DHAP, Lact, Succ, Mal, ADP and AMP. In general, the metabolic changes in both age groups point to an increased glycolytic flux which may be less accelerated in the aged group, to an inhibition of the starting reactions of the tricarboxylic acid cycle more severe in aged animals, to a preponderance of anaplerotic reactions in this oxidative system more pronounced in the two-year-old group and to a loss of AMP in the same age group. The age-related metabolic variations measured may indicate that with age the biological plasticity of the brain may be reduced to meet emergency conditions.

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Crossref · 10.1016/0197-4580(86)90022-9

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Authors
Hoyer, S., & Krier, C.
Affiliations
Heidelberg University (DE)
Corresponding author
Hoyer, Siegfried
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
1986-01
Volume
7
Issue
1
Pages
23-29
ISSN
0197-4580 (ISSN-L)
OpenAlex
W2077227045
Cited by
98
References
42
Citations by year
2024: 1 · 2022: 3 · 2021: 4 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 2 · 2013: 4 · 2012: 2
FWCI
3.95
Type
journal article
Language
en
Open access
closed
Locations
  • Neurobiology of Aging (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
brain aging, cerebral ischemia, glucose metabolism, energy metabolism, cerebral cortex, glycolysis, TCA cycle, anaplerotic reactions, ATP depletion, AMP accumulation
MeSH terms
Adenine Nucleotides, Aging, Animals, Cerebral Cortex, Brain Ischemia, Citric Acid Cycle, Energy Metabolism, Glucose, Glycolysis, Male, Rats, Inbred Strains, Succinates, Succinic Acid, Rats

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