Chronic low dose exposure to hydrogen peroxide changes sensitivity of V79 cells to different damaging agents.

Abstract:

:Chinese hamster V79 cells were repeatedly exposed to a low dose of hydrogen peroxide (H2O2) over several weeks and then exposed to H2O2, cisplatin or ultraviolet (UV) light. Cell killing was examined by colony formation, following these treatments. It was seen that cells conditioned by multiple low doses of H2O2 showed resistance to killing in case of H2O2 and cisplatin but the sensitivity to UV light was same as the control cells. Apoptosis was also determined in these cells after the same treatments. UV light failed to induce apoptosis in both conditioned and in control cells, but in case of cells treated with H2O2 and with cisplatin, there was less apoptosis in the conditioned cells compared to the control cells. From our observation we can say that the enhanced survival of cells after treatment with H2O2 or cisplatin could be due to inhibition of apoptosis.

journal_name

Indian J Exp Biol

authors

Bose K,Bhaumik G,Ghosh R

keywords:

subject

Has Abstract

pub_date

2003-08-01 00:00:00

pages

832-6

issue

8

eissn

0019-5189

issn

0975-1009

journal_volume

41

pub_type

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