Hyperthermic modification of radiation induced gene conversion in Saccharomyces cerevisiae.

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dc.contributor.authorAnjaria, K Ben_US
dc.contributor.authorRao, B Sen_US
dc.contributor.authorDeorukhakar, V Ven_US
dc.date.accessioned2009-05-28T11:21:40Z
dc.date.available2009-05-28T11:21:40Z
dc.date.issued1997-10-25en_US
dc.description.abstractEffect of pre- and post-irradiation hyperthermia on the induction of gene conversion (non-reciprocal recombination) in diploid yeast cells was investigated. Post irradiation heat treatment does not significantly modify the frequency of gene conversion. Both low-level (51 degrees C-10 min) and lethal (51 degrees C, 40 min) pre irradiation heat treatments enhanced the gene conversion frequency by 17-49%. There was no quantitative correlation between the observed enhancement and the radiation dose. These results suggest that hyperthermia given prior to radiation not only sensitizes the cells to killing but also increases their convertogenic response. It has been suggested that recombination may be involved in carcinogenesis and tumour promotion. Based on these observations along with other reports, wherein hyperthermia was shown to modify the carcinogenic effects in animals as well as the genetic effects of radiation in vitro, it is possible to suggest that hyperthermia may have a potential to increase the second primary cancers, especially in long term survivors. Certain differences in the mechanism of interaction between radiation and heat in the pre- irradiation and post irradiation modalities appear likely.en_US
dc.description.affiliationRadiological Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.en_US
dc.identifier.citationAnjaria KB, Rao BS, Deorukhakar VV. Hyperthermic modification of radiation induced gene conversion in Saccharomyces cerevisiae. Indian Journal of Experimental Biology. 1997 Oct; 35(10): 1032-7en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/56607
dc.language.isoengen_US
dc.source.urihttps://www.niscair.res.in/ScienceCommunication/ResearchJournals/rejour/ijeb/ijeb0.aspen_US
dc.subject.meshGamma Raysen_US
dc.subject.meshGenes, Fungalen_US
dc.subject.meshHot Temperatureen_US
dc.subject.meshRecombination, Genetic --radiation effectsen_US
dc.subject.meshSaccharomyces cerevisiae --geneticsen_US
dc.titleHyperthermic modification of radiation induced gene conversion in Saccharomyces cerevisiae.en_US
dc.typeJournal Articleen_US
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