Search results for " Polychlorinated"
showing 2 items of 12 documents
Induction of DNA damage and expression of heat shock protein HSP70 by polychlorinated biphenyls in the marine sponge Suberites domuncula Olivi
1999
The effects of different polychlorinated biphenyls (PCBs) including toxic coplanar non-ortho (PCB77) and non-planar mono-ortho (PCB118) and di-ortho (PCB153) congeners on the extent of DNA damage as well as on the expression of heat shock protein 70 (HSP70) were investigated in the marine sponge Suberites domuncula Olivi (Porifera; Demospongiae). A time-dependent increase in the number of DNA single-strand breaks, expressed as strand scission factor (SSF), was found after injection of a single dose of 25 mu g of PCB 118 or PCB 153 per gram wet mass of S. domuncula, using Fast Micromethod assay, which is based on the unwinding of DNA under alkaline conditions. The number of strand breaks ind…
Environment and Endometriosis: A toxic relationship
2015
Endometriosis is a common, be- nign, estrogen-dependent gynecological dis- ease that represents one of the main causes of hospitalization in industrialized countries. It is well established that a large amount of natural and man-made chemicals are present in the en- vironment and both humans and animals are exposed to them. Dioxin and dioxin-like com- pounds have long biological half-life, can accu- mulate within the organism and could negative- ly affect several physiological processes. The purpose of this review is to provide an overview of the possible relationship between these chemicals and the pathogenesis of en- dometriosis.