The regional difference of neuronal susceptibility in the dentate gyrus to hypoxia.
The effects of hypoxia on neuronal activity in dentate gyrus granule cells were studied in submerged guinea pig hippocampal slices. In all regions of the dentate gyrus granule, the amplitude of the population spike recorded from the dentate granule cell layers, in response to electrical stimulation of the perforant path, decreased during hypoxia and recovered during reoxygenation. However, the ventral dentate gyrus granule cells (upper blade) were more susceptible to hypoxia than the dorsal ones (lower blade), indicating regional differences of neuronal susceptibility to hypoxia in the dentate gyrus.
Hara
H
H
Department of Neurology, Tohoku University School of Medicine, Sendai, Japan.
Onodera
H
H
Kogure
K
K
Akaike
N
N
D000200:Action Potentials; D000818:Animals; D004558:Electric Stimulation; D006168:Guinea Pigs; D006624:Hippocampus / Q000503:physiopathology*; D002534:Hypoxia, Brain / Q000503:physiopathology*; D066298:In Vitro Techniques