Chromosome studies in human subjects chronically exposed to arsenic in drinking water
β Scribed by Dr. B. K. Vig; M. L. Figueroa; M. N. Cornforth; S. H. Jenkins
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 711 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0271-3586
No coin nor oath required. For personal study only.
β¦ Synopsis
A two-year study was carried out on human subjects of various ages and backgrounds who had been drinking water containing more than 0.05 mg/liter (0.05 ppm) arsenic for a period of at lcast five years. The main aim was to correlate the frequency of chromosome aberrations and sister chromatid exchanges in the lymphocytes with the amount of arsenic in the water. In addition, we explored the incidence of skin cancer, fetal wastage, and genetic or developmcntal abnormalities. Several other variables-eg , coffee, wine, and cigarette consumption; sex, residence (rural vs urban); and exposure to chemicals, smelters, or pesticides--were also taken into consideration. The data on chromosome aberrations (104 exposed and 86 control individuals) and on sister chromatid exchanges (98 exposed and 83 control individuals) did not show that arsenic at concentrations used by our population (> 0.05 mg/liter) has any effect on these parameters. Similarly, no other health effects of arsenic at these concentrations were found.
π SIMILAR VOLUMES
## Abstract Arsenic is well established as a human carcinogen, but its precise mechanism of action remains unknown. Arsenic does not directly damage DNA, but may act as a carcinogen through inhibition of DNA repair mechanisms, leading indirectly to increased mutations from other DNA damaging agents
We describe the association between structural chromosome aberrations (CAs) and parameters of exposure to arsenic among 42 individuals exposed to arsenic through well waters in Finland. The median concentration of arsenic in the wells was 410 microg/l, the total arsenic concentrations in urine (As-t