Sister-chromatid exchanges and chromosomal aberrations in a population exposed to pesticides

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Abstract

Sister-chromatid exchanges (SCE) and chromosomal aberrations were studied in a population of floriculturists occupationally exposed to organophosphorus, carbamate and organochlorine pesticides. Blood samples from 36 individuals from a community of 154 persons of asiatic origin were obtained. Among the group sampled, 21 individuals exhibited at least one symptom of chronic intoxication. SCE analysis was performed in 14 symptomatic and 13 asymptomatic persons. The asymptomatic group showed a SCE frequency of 5.47 ± 1.03 and the symptomatic group a frequency of 6.45 ± 1.19. Comparison between both groups with the Mann-Whitney ‘U’ test revealed a significant difference (p 0.0409). Case-control analysis of 9 pairs matched by sex and age also showed significant differences between both groups (p 0.0104). In contrast, the frequencies of chromosomal aberrations were not correlated with intoxication symptomatology, though a significant increment of exchange-type aberrations in relation to a group of non floriculturists was observed in the population studied.

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    Citation Excerpt :

    Controversial results are found in relation to PPE use and DNA damage reduction. Different studies [55–57] demonstrated that the use of mask and gloves seems to protect the workers by reducing the incidence of cytogenetic outcomes during pesticide application [26,58]. No statistically significant difference was found in this study for hematocrit values between the tobacco farmers and non-exposed subjects.

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