[Effect of low-intensity periodic-impulse laser UV radiation on the nucleic acid synthesis rate in proliferating and resting cells].
A study was made of the effect of the low intensity (10(-6)--10(3)/cm3) high repetition rate (pulse duration 18 nseconds, repetition rate 10 KHz) UV radiation (2nd harmonic of Cu vapour laser, lambda = 271.2 nm) on proliferating and resting cells (HeLa and fibroblast-like cells of Chinese hamster 431). The treatment within the dose range from 0.05 to 5 J/m3 stimulates DNA synthesis in the resting cells rather than in the proliferating ones. It was shown autoradiographically that, within the same dose range, the number of synthesizing cells increased in 2.5 hour.
D000818:Animals; D002455:Cell Division / Q000528:radiation effects; D002478:Cells, Cultured; D006224:Cricetinae; D003412:Cricetulus; D004247:DNA / Q000096:biosynthesis / Q000528:radiation effects*; D005347:Fibroblasts / Q000378:metabolism / Q000528:radiation effects*; D006367:HeLa Cells / Q000378:metabolism / Q000528:radiation effects*; D006801:Humans; D007834:Lasers; D012313:RNA / Q000096:biosynthesis / Q000528:radiation effects*; D013997:Time Factors; D014466:Ultraviolet Rays
D012313:RNA; D004247:DNA
Vliianie nizkointensivhnogo impul'sno-peridicheskogo lazernogo UF-izlucheniia na skorost' sinteza nukleinovykh kislot v proliferiruiushchikh i pokoiashchikhsia kletkakh.