Changes in mitotic rate and GFAP expression in the primary olfactory axis of streptozotocin-induced diabetic rats.
J Neurocytol
; 34(1-2): 3-10, 2005 Mar.
Article
en En
| MEDLINE
| ID: mdl-16374706
ABSTRACT
Many diabetic individuals develop anosmia but the mechanism(s) causing the dysfunction in the olfactory system is (are) unknown. Glial fibrillary acidic protein expression is reduced in diabetic retinopathy and is also reduced, with unknown consequences, in other brain regions of diabetic rats. We used immunohistochemistry and immunoblotting from untreated control and streptozotocin-induced type 1 (insulin dependent) diabetic rats to investigate main olfactory epithelial mitotic rate and glial fibrillary acidic protein expression in the lamina propria of the sensory epithelium and in the olfactory bulb. Numbers of bromodeoxyuridine-positive cells were significantly lower in the diabetic sensory epithelium compared to non-diabetic controls. Immunohistochemical observations suggested a qualitative difference in glial fibrillary acidic protein expression in both regions examined especially in the olfactory bulb external plexiform layer and the lamina propria. Immunoblot analysis confirmed that the diabetic olfactory bulb and lamina propria expressed less glial fibrillary acidic protein compared to the non-diabetic control group. The lower expression levels in the olfactory bulb external plexiform layer suggested by immunohistochemistry do not reflect a change in the number of astrocytes since the numbers of S100B(+) cells were not different between the two groups.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bulbo Olfatorio
/
Diabetes Mellitus Experimental
/
Proteína Ácida Fibrilar de la Glía
/
Mitosis
Tipo de estudio:
Qualitative_research
Límite:
Animals
Idioma:
En
Revista:
J Neurocytol
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos