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Effect of radiation on the functioning of neuron chromatin of mice exposed in the zone of the Chernobyl nuclear power plant

  • Experimental Biology
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Bulletin of Experimental Biology and Medicine Aims and scope

Abstract

Circadian fluctuations in the activity of endogenous RNA polymerases were examined in the nuclei ofL v spinal ganglion neurocytes, spinal α-motoneurons, and in neurons of the sensorimotor and visual cortex of mice exposed to radiation in the zone of the Chernobyl power plant. The circadian organization of the functioning of the genetic apparatus of neurons in various compartments of the nervous system was altered in irradiated mice. A shift of the acrophases of nucleoplasmic and nucleolar labeling in the course of the 24-hour cycle was observed after a 40-day exposure under conditions of a high radioactive background. The degree of synchronization of the level of transcription of ribosomal and structural genes of the studied cell populations diminished. The mesors and amplitudes of circadian rhythms of chromatin matrix activity decreased. The status of the histone component of chromatin also changed in exposed animals.

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Authors and Affiliations

  1. Department of Biology, Russian State Medical University, Moscow

    A. G. Mustafin, V. N. Yarygin, N. M. Vakhtel' & L. V. Bibaeva

Authors
  1. A. G. Mustafin
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  2. V. N. Yarygin
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  3. N. M. Vakhtel'
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  4. L. V. Bibaeva
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Additional information

Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 121, No. 5, pp. 555–558, May, 1996

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Mustafin, A.G., Yarygin, V.N., Vakhtel', N.M. et al. Effect of radiation on the functioning of neuron chromatin of mice exposed in the zone of the Chernobyl nuclear power plant. Bull Exp Biol Med 121, 500–503 (1996). https://doi.org/10.1007/BF02446950

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  • DOI: https://doi.org/10.1007/BF02446950

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