Immunohistochemical and Morphological Changes in Neurons and Neuroglia in the Cerebral Nigrostriatal Structures under Conditions of Experimental Nigral Neurodegeneration

The count of dopamine-containing neurons decreased by 77%, the area of the remaining cells shrank by 75%, and the neuroglia doubled 4 weeks after injection of toxin (6-hydroxydopamine) into the compact part of the substantia nigra of the right cerebral hemisphere of rats, while no changes in the sub...

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Bibliographic Details
Published in:Bulletin of experimental biology and medicine 2012-10, Vol.153 (6), p.894-898
Main Authors: Khudoerkov, R. M., Voronkov, D. N., Yamshchikova, N. G.
Format: Article
Language:English
Subjects:
Analysis
Biomedical and Life Sciences
Biomedicine
Cell Biology
Internal Medicine
Laboratory Medicine
Neurons
Pathology
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Summary:The count of dopamine-containing neurons decreased by 77%, the area of the remaining cells shrank by 75%, and the neuroglia doubled 4 weeks after injection of toxin (6-hydroxydopamine) into the compact part of the substantia nigra of the right cerebral hemisphere of rats, while no changes in the substantia nigra of the left hemisphere were observed. Neurons of the caudate nucleus were virtually unchanged in comparison with the intact control, while the neuroglia was activated: its total volume in the right hemisphere increased by 33% (50% increase in astrocyte count and a 25% increase of the rest neuroglia), while in the left hemisphere only astrocyte count increased by 20%. Astrocyte nuclei in the caudate nuclei of both hemispheres were enlarged by 22-23%. Hence, unilateral destruction of the nigral dopaminecontaining neurons stimulated the neuroglia (particularly astroglia) in the caudate nuclei, especially on the side of damage.
ISSN:0007-4888
1573-8221
DOI:10.1007/s10517-012-1853-y