Immediate and Delayed Effects of Food Restriction on Some Parameters of Brain Development in Rats
- Authors: Ryzhavskii B.Y.1, Lebed’ko O.A.1,2, Lazinskaya O.V.1
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Affiliations:
- Department of Histology, Embryology, and Cytology, Far-Eastern State Medical University
- Khabarovsk Affiliated Department of Far-Eastern Center of Respiration Physiology and Pathology — Research Institute of Maternity and Childhood Protection
- Issue: Vol 167, No 1 (2019)
- Pages: 104-110
- Section: Morphology and Pathomorphology
- URL: https://journals.rcsi.science/0007-4888/article/view/241492
- DOI: https://doi.org/10.1007/s10517-019-04471-7
- ID: 241492
Cite item
Abstract
The effects of 15-day restriction diet (from 1 to 1.5 months of age) on some parameters of brain development were studied in rats. The immediate and delayed (15 days after transfer to normal ration) effects were evaluated. The immediate effects included a significant decrease of the absolute weights of the brain and hemispheres. The relative weight of the brain was significantly higher. The thickness of the cortex of the parietal lobe proper and its layer I decreased. The absolute weights of the brain and hemispheres were less than in the control 15 days after the rats were transferred to ad libitum feeding, while the relative weight of the brain was higher than in controls. The thickness of the parietal and anterior parietal cortex and the numerical density of neurons in layers II and V did not differ from the control. In the neurons of layers II and V of the anterior parietal and parietal lobe proper the nuclei were larger, while the nucleoli were enlarged in the neurons of these locations and the hippocampus, the shifts being significant in the anterior parietal layer V. The concentrations of RNA in the parietal, anterior parietal, and hippocampal lobe neurons in different groups were similar directly and 15 days after the diet. Changes in the gravimetric and morphometric parameters of the brain were paralleled by the development of oxidative stress.
About the authors
B. Ya. Ryzhavskii
Department of Histology, Embryology, and Cytology, Far-Eastern State Medical University
Author for correspondence.
Email: 19151943@rambler.ru
Russian Federation, Khabarovsk
O. A. Lebed’ko
Department of Histology, Embryology, and Cytology, Far-Eastern State Medical University; Khabarovsk Affiliated Department of Far-Eastern Center of Respiration Physiology and Pathology — Research Institute of Maternity and Childhood Protection
Email: 19151943@rambler.ru
Russian Federation, Khabarovsk; Khabarovsk
O. V. Lazinskaya
Department of Histology, Embryology, and Cytology, Far-Eastern State Medical University
Email: 19151943@rambler.ru
Russian Federation, Khabarovsk