Micronucleus frequencies in lymphocytes and reticulocytes in a pesticide-exposed population in Portugal

Details

• Personal Author:
  Coelho P ; Costa C ; Costa S ; Laffon B ; Neves J ; Silva S ; Snawder, John E. ; Teixeira JP
• Description:
  A wide range of chemical products known to be acutely toxic is currently used in the agricultural sector, including numerous pesticides with different compositions. Nevertheless, the effects in human health as result of chronic exposure to low levels are not yet completely understood. The methodology for determination of micronuclei (MN) in lymphocytes (CBMN) is well established, and accumulating data demonstrated a correlation to enhanced risk of cancer development. However, analysis of MN in reticulocytes (MN-RET) in humans is a recent tool on human biomonitoring. The aim of this study was to examine the influence of pesticide exposure on MN-RET and CBMN frequencies. In total, 177 individuals were studied (93 controls and 84 exposed). All individuals included in the exposed group were exposed regularly to various chemicals. Both MN-RET and CBMN were significantly higher in the exposed subjects compared to controls. The CBMN frequencies were quantitatively higher in females than males, especially within the exposed group. Smoking habits exerted no marked influence on the frequency of the biomarkers studied. A significant and positive correlation was found between both indicators. Within the exposed group, data showed that there was a significant correlation between MN-RET and recent exposure (exposure in the previous 10 d) that is not found when considering CBMN. It is conceivable that due to the short life span of reticulocytes, MN-RET were found to be more reliable to characterize recent genetic damage as opposed to CBMN. [Description provided by NIOSH]
• Subjects:
  Agriculture Biomarkers Blood Hazardous Substances Insecticides Men Neoplasms Occupational Health Safety Women
• Keywords:
  Agricultural-chemicals Cancer Exposure-levels Exposure-limits Humans Lymphocytes Pest-control Pesticides Pesticides-and-agricultural-chemicals Toxic-effects
• ISSN:
  1528-7394
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  74
• Issue:
  15
• NIOSHTIC Number:
  nn:20039456
• Citation:
  J Toxicol Environ Health A 2011 Aug; 74(15-16):960-970
• Contact Point Address:
  Carla Costa, National Institute of Health, Environmental Health Department; Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
• Email:
  cstcosta@gmail.com
• Federal Fiscal Year:
  2011
• NORA Priority Area:
  Construction ; Transportation, Warehousing and Utilities
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Toxicology and Environmental Health, Part A: Current Issues
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3b96e22af90f070f5eb8f91e8df7cfb940452794d726df8cb1c111c5a223037bb07951b6d27175c39f86ed2920b8e90660ee7c3aac1127b6b527903f6bf7b542
• Download URL:
  https://stacks.cdc.gov/view/cdc/192718/cdc_192718_DS1.pdf
• File Type:
  [PDF - 371.04 KB ]