Quantitative morphological characteristics of developing neurons after partial deafferentation of the sensory trigeminal nuclei

Autor: N. G. Gladkovich, K. V. Shuleikina, T. A. Leontovich, Lushchekina Ea
Rok vydání: 1986
Předmět:
Zdroj: Neurophysiology. 17:378-385
ISSN: 1573-9007
0090-2977
DOI: 10.1007/bf01052351
Popis: We have studied different types of neurons in the sensory trigeminal nuclei stained by the Golgi method in kittens aged 30 days with bilateral transection of the lingual nerve, made on the fifth postnatal day. We have shown that deprivation of afferent inflow from the tongue to trigeminal neurons leads to changes in the structure of all types of cells: reticular, arborescent, and bushy (68, 61, and 46% neurons respectively had changed), short-dendrite cells having changed to a lesser extent (16% changed neurons). The multipolar giant neurons hardly changed. The structural changes involved changes in the size of the bodies, number, length, and ramification of dendrites, and changes in their orientation and pattern of ramification, compared to the normal. We observed destructive changes resulting in a decrease in the quantitative parameters, and constructive changes resulting in an increase in the latter. Reticular and arborescent neurons showed both destructive and constructive changes, the short-dendritic neurons mainly constructive changes, and bushy neurons mainly destructive changes. The analysis of the differently directed rearrangements of the dendrite geometry in different types of deafferentated trigeminal neurons allowed us to put forward some proposals concerning the different functional role of these groups of cells in the system of afferent impulsation entering via the lingual nerve.
Databáze: OpenAIRE
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