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He–Ne laser (632.8 nm) pre‐irradiation gives protection against DNA damage induced by a near‐infrared trapping beam
Author(s) -
Sahu Khageswar,
Mohanty Samarendra Kumar,
Gupta Pradeep Kumar
Publication year - 2009
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.200810041
Subject(s) - irradiation , trapping , laser , infrared , beam (structure) , optoelectronics , materials science , laser beams , optics , physics , biology , nuclear physics , ecology
We report the results of a study carried out to investigate the effect of He–Ne laser (632.8 nm) pre‐irradiation on DNA damage induced by continuous wave 1064 nm trapping beam exposure in MCF‐7 cells. A significant decrease in % tail DNA ( p < 0.05) was observed in MCF‐7 cells pre‐exposed to He–Ne laser beam. The dependence of the induced protection against 1064 nm trapping beam irradiation induced DNA damage on the time interval between the two irradiations as well as the He–Ne laser pre‐irradiation parameters is presented. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)