Phenotypic differentiation of neurons in intraocular transplants
- Authors: Zhuravleva Z.N.1, Hutsyan S.S.2, Zhuravlev G.I.2
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Affiliations:
- Institute of Theoretical and Experimental Biophysics
- Institute of Cell Biophysics
- Issue: Vol 47, No 3 (2016)
- Pages: 147-153
- Section: Neurotransplantation and Cell Differentiation
- URL: https://journals.rcsi.science/1062-3604/article/view/183425
- DOI: https://doi.org/10.1134/S1062360416030085
- ID: 183425
Cite item
Abstract
Neurochemical differentiation of neurons in transplants developing in rat anterior eye chamber was studied. Pieces of the somatosensory neocortex area, isolated from 17-day fetuses of Wistar rats, were used for the transplantation. The general cytological analysis and immunochemical identification of GABAergic neurons in neocortical transplants and in the appropriate brain area of the recipient rats (control) were carried out after 6 months. Cytoarchitectonics typical for neocortex was not revealed in the transplants. Furthermore, a 1.4-fold decrease in numerical density of the entire neuron population was found compared to the control. The proportion of GABAergic nerve cells in the transplanted tissue was reduced even more dramatically— by 13.1 times. The dimensions of all types of neurons, especially GABAergic cells, were greater in the transplants in oculo compared to neocortex in situ. The increase in size occurred mostly due to the cytoplasm. Thus, the nuclei of GABA-positive neurons in the transplants were larger by 1.2 times compared to the control and their perikarya were larger by 1.5 times. The obtained results showed that the conditions in the anterior eye chamber the most dramatically affect the differentiation of GABAergic neurons, and cell hypertrophy, probably, is the functional compensation of the decrease in their number. Considering the literature data on the increased excitability and synchronized neuronal activity in the intraocular transplants, it can be assumed that these transplants can be used as a model for studying the cellular mechanisms of nervous tissue epileptization under disinhibition conditions.
About the authors
Z. N. Zhuravleva
Institute of Theoretical and Experimental Biophysics
Author for correspondence.
Email: zhuravleva@iteb.ru
Russian Federation, ul. Institutskaya 3, Pushchino, Moscow oblast, 142290
S. S. Hutsyan
Institute of Cell Biophysics
Email: zhuravleva@iteb.ru
Russian Federation, ul. Institutskaya 3, Pushchino, Moscow oblast, 142290
G. I. Zhuravlev
Institute of Cell Biophysics
Email: zhuravleva@iteb.ru
Russian Federation, ul. Institutskaya 3, Pushchino, Moscow oblast, 142290