Linked Life Data

1381482

Source:http://linkedlifedata.com/resource/pubmed/id/1381482

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1992-10-2
pubmed:abstractText
There is growing interest in the irradiation of food and agricultural products for insect disinfestation, sprout inhibition, delayed ripening and the reduction of microbiological loads. Extensive research has been done on this process, and irradiation to a maximum dose of 10 kGy is recognized as safe by national and international regulatory agencies. The question has been raised, however, whether irradiation of pesticide residues might produce radiation products that were more toxic or less toxic than the original pesticide. To address this question, we observed the effects of 10 kGy of gamma-radiation on malathion as measured by sister-chromatid exchange (SCE), micronuclei formation, cell survival, growth rate and polyploid formation. We found no significant differences between the effects of irradiated and unirradiated malathion on any of these end-points. Polyploid formation was the most dramatic effect of both irradiated and control malathion on V79 Chinese hamster cells. Cell survival, polyploid formation and growth rate were slightly better in cells treated with irradiated malathion. In Molt-4 human lymphocyte cells, micronuclei formation was not affected by irradiated or unirradiated malathion. Compared to malathion alone, the lack of such biological effects indicates that none of the presumed radiation-induced breakdown products increased or decreased the endpoints studied. The number of SCE was consistently, but not significantly, higher in the cells treated with irradiated malathion. There were no significant differences in cell survival or micronucleus formation in the human lymphocyte cell line Molt-4 treated with irradiated or control malathion. Thus, the irradiation of the pesticide malathion to 10 kGy, a recommended upper dose for most food irradiations, does not significantly alter its toxicity in these in vitro systems.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0027-5107
pubmed:author
pubmed:issnType
Print
pubmed:volume
280
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
187-93
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
The effect of gamma-irradiation on the toxicity of malathion in V79 Chinese hamster cells and Molt-4 human lymphocytes.
pubmed:affiliation
Radiation Applications Research Branch, AECL Research, Whiteshell Laboratories, Pinawa, Manitoba, Canada.
pubmed:publicationType
Journal Article