Faculty Research 1990 - 1999

Title

Age-related gliosis in the white matter of mice.

Document Type

Article

Publication Date

1993

Keywords

Animal, Astrocytes: ph, Brain: pa, Brain-Chemistry: ph, Caloric-Intake, Diet, Female, Glial-Fibrillary-Acidic-Protein: im, me, Gliosis: pa, Histocytochemistry, Immunoenzyme-Techniques, Male, Mice, Mice-Inbred-Strains, SUPPORT-U-S-GOVT-NON-P-H-S, SUPPORT-U-S-GOVT-P-H-S

JAX Source

Brain Res 1993 Apr 23;609(1-2):124-8

Grant

AG07747/AG/NIA, AG06232/AG/NIA, AG00594/AG/NIA

Abstract

A histopathologic study of the brains from 96 mice, ranging in age from 3 to 57 months in age, documents an age-associated increase in hypertrophic astrocytes in white matter. This report of gliosis is distinct from previously reported proliferation of glial cells in the grey matter. Four genotypes, CBA/HT6J, C57BL/6J, B6CBAT6F1J, and B6C3F1 were positive for this age-related lesion. Most very old mice utilized in this study were calorically restricted, a dietary manipulation long known to result in increased longevity in rodents. Caloric restriction appears to delay the age associated increase of this lesion. Immunoperoxidase staining for the astrocyte-specific glial fibrillary acidic protein (GFAP) confirmed the progressive increase in the density of stainable astrocytes with increase in age. GFAP staining of white matter increased in both diet groups with age. These findings present an interesting model for the study of aberrant cellular activity and perhaps neurodegeneration, modulated by caloric restriction.

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