Breast cancer and serum organochlorine residues
- 1Clinical Toxicology Laboratory, Sart Tilman University Hospital, University of Liege, 4000 Liege, Belgium
- 2Biostatistics Department, Sart Tilman University Hospital
- 3Gynaecology Department, Sart Tilman University Hospital
- 4Endocrine Surgery Department, Sart Tilman University Hospital
- Correspondence to: Dr C Charlier, Laboratoire de Toxicologie clinique, CHU Sart Tilman, 4000 Liege, Belgique; C.CHARLIER{at}chu.ulg.ac.be
- Accepted 20 June 2002
Abstract
Background: Controversy still exists about the breast carcinogenic properties in humans of environmental xenoestrogens (organochlorines), justifying new investigations.
Aims: To compare the blood levels of total dichlorodiphenyltrichloroethane (DDT) and hexachlorobenzene (HCB) in samples collected at the time of breast cancer discovery, in order to avoid the potential consequences of body weight change (after chemotherapy or radiotherapy) on the pesticide residue levels.
Methods: Blood levels of HCB and total DDT (we calculated total DDT concentrations by adding all DDT and DDE isomers) were compared in 159 women with breast cancer and 250 presumably healthy controls. Risk of breast cancer associated with organochlorine concentration was evaluated.
Results: Mean levels of total DDT and HCB were significantly higher for breast cancer patients than for controls. No differences in serum levels of total DDT or HCB were found between oestrogen receptor positive and oestrogen receptor negative patients with breast cancer.
Conclusions: These results add to the growing evidence that certain persistent pollutants may occur in higher concentrations in blood samples from breast cancer patients than controls.
- DDE, dichlorochlorophenylethylene
- DDT, dichlorodiphenyltrichloroethane
- DES, diethylstilboestrol
- HCB, hexachlorobenzene
- OR, odds ratio
- SD, standard deviation
