1991 Fiscal Year Final Research Report Summary
Morphological investigations of glucose uptake in the mouse hippocampus.
| Project/Area Number |
02670032
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
神経解剖学
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| Research Institution | Osaka Medical College |
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Principal Investigator |
SHIMADA Masahisa Osaka Medical College, Department of Anatomy Professor, 医学部, 教授 (00084830)
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| Co-Investigator(Kenkyū-buntansha) |
AKAGI Noriko Osaka Medical College, Department of Anatomy Assistant, 医学部・解剖学, 助手 (60192879)
GOTO Hideyuki Osaka Medical College, Department of Anatomy Assistant, 医学部・解剖学, 助手 (20142656)
WATANABE Masahito Osaka Medical College, Department of Anatomy Assistant Professor, 医学部・解剖学, 助教授 (70084902)
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| Project Period (FY) |
1990 – 1991
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| Keywords | hippocampus / microvessel / insulin / insulin receptor / glucose transporter / laminin / immunohistochemistry |
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| Research Abstract |
In recent years, there has been a growing interest in the relationships between energy metabolism and neural activity in the brain. We have been investigating the factors responsible for glucose uptake in the mouse hippocampus. We will report here the densities of microvessel, laminine, insulin, insulin receptor and glucose transporter in each laminar region of the hippocampus. The highest density of perfused microvessels with indian ink was found in the stratum lacunosum - moleculare, as compared with other regions, and lowest values were found in the stratum lucidum and dentate granular cell layer. Among pyramidal cell layers, microvessel density of the sector CA3a was significantly higher than that of the CA1. Although laminine distributions stained immunohistochemically were consistent with that of microvessels, immuno - positive reactions were also seen in the pyramidal and granular cell layer. By contraries, insulin and insulin receptors were intensively distributed in the stratum granulare and pyramidale, while they were lowest in the stratum lacunosum - moleculare, suggesting that the insulin have no dealings with the glucose transport into the brain. The immunohistochemical reactions of glucose transporter, responsible for facilitated glucose transport in the brain, were not only highly positive in the microvessel wall, but also in the parenchymal tissue in the stratum lacunosum - moleculare. The severe anemic hypoxia(NO_2 for30 minutes), used for the model of aging, did not any influence to the synaptic densities and morphological changes of astroglial cells in the hippocampus.
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Research Products
(3 results)
