1999 Fiscal Year Final Research Report Summary
Free radical and brain aging : role of metallothionein in the aging of Beagle dog I
| Project/Area Number |
10660300
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied veterinary science
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| Research Institution | Tottori University |
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Principal Investigator |
SHIMADA Akinori Tottori Univ. Agriculture, Prof., 農学部, 教授 (20216055)
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| Co-Investigator(Kenkyū-buntansha) |
YAMANO Yoshiaki Tottori Univ. Agriculture, Associate Prof., 農学部, 助教授 (00182593)
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| Project Period (FY) |
1998 – 1999
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| Keywords | Dog / Metallothionein / brain / aging / metal / iron / in situ hybridization |
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| Research Abstract |
Beagle dogs showed a variety of morphological age-related brain changes including neurona dystrophic axonal changes, astrogliosis and amyloidosis characterized by the formation of s plaques in the cerebral cortex. To study the roles of metallothioneins (MTs) in the brain, the expression pattern of metallothioneins in the brain of aged Beagle dogs was examined. Inter MT-I & -II immunoreactivity as well as signals for MT-I & -II mRNA were shown in the hypertrophic astrocytes in the brains with severe age-related changes. These MT-I & -II positive astrocytes dominated in the thalamus, cerebral cortex and medulla, where remarkal age-related changes including iron and lipofucin deposition were observed. In contrast, MT-I II expression was considerably weak in the brains of dogs with mild age-related changes. On other hand, both MT-III immunoreactivity and signals for MT-III mRNA were demonstrated in neurons in the brain regardless of the intensity of the age-related changes.
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Research Products
(2 results)
