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Proceedings Paper

Influence of He-Ne laser irradiation on giant chromosomes
Author(s): Gregory E. Brill; Nadezda P. Panina; Vadim K. Sonin; Svetlana I. Belyanina
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Paper Abstract

Influence of He-Ne laser irradiation (lambda - 632.8 nm, power density - 1.5 mW/cm2) on polytene chromosomes of salivary glands cells of Chironomus plumosus in different conditions of exposure was studied. Living larvae or isolated salivary glands were exposed to irradiation. He-Ne laser irradiation was stated to influence the functional activity of polytene chromosomes. The response of the genetic apparatus to the laser light action was shown to depend on the irradiation dose and fractional character of the dose exposure, on the initial functional state of chromosome loci and may be manifested both by activation and inhibition of definite regions of the genome. The phenomenon of adaptation of the genetic system to He- Ne laser irradiation is revealed.

Paper Details

Date Published: 15 January 1996
PDF: 9 pages
Proc. SPIE 2630, Effects of Low-Power Light on Biological Systems, (15 January 1996); doi: 10.1117/12.230028
Show Author Affiliations
Gregory E. Brill, Saratov State Medical Univ. (Russia)
Nadezda P. Panina, Saratov State Medical Univ. (Russia)
Vadim K. Sonin, Saratov State Medical Univ. (Russia)
Svetlana I. Belyanina, Saratov State Medical Univ. (Russia)


Published in SPIE Proceedings Vol. 2630:
Effects of Low-Power Light on Biological Systems
Tiina I. Karu; Anthony R. Young, Editor(s)

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