Frequency of human papillomavirus infection in patients with gastrointestinal cancer.

Introduction And Aim: Cancer is the result of the interaction of genetic and environmental factors. It has recently been related to viral infections, one of which is human papillomavirus. The aim of the present study was to describe the frequency of human papillomavirus infection in patients with digestive system cancers.

Autoxidative activation of the nematocide 1,3-dichloropropene to highly genotoxic and mutagenic derivatives: consideration of genotoxic/carcinogenic mechanisms.

1,3-Dichloropropene (1,3-DCP) is used as a soil nematocide worldwide. Technical grade 1,3-DCP is genotoxic/mutagenic and carcinogenic. Talcott and King reported that mutagenic activity is lost after purification of 1,3-DCP samples via silica gel column chromatography.