title: DL-Serine: promoting activity on renal tumorigenesis by N-ethyl-N-hydroxyethylnitrosamine in rats.
abstract: Subcutaneous injection of DL-serine increased the number and size of renal tubular cell tumors in male W rats treated with 500 or 1,000 ppm N-ethyl-N-hydroxyethylnitrosamine [(EHEN) CAS: 13147-25-6, 2-(ethylnitrosamino)ethanol]. At the end of the 32-week experiment, the incidences of renal tumors were 95% in rats treated with 1,000 ppm EHEN for 2 weeks and then given three sc injections of DL-serine every 2 weeks, 33% in rats treated with 1,000 ppm EHEN for 2 weeks, and 28% in rats treated with 500 ppm EHEN for 2 weeks and then given three sc injections of DL-serine every 2 weeks. No renal tumors were found in rats treated with 500 ppm EHEN alone or given three sc injections of DL-serine alone every 2 weeks.
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002273:Carcinogens; D004052:Diethylnitrosamine / Q000031:analogs & derivatives / Q000633:toxicity*; D004357:Drug Synergism; D007668:Kidney / Q000187:drug effects / Q000473:pathology; D007680:Kidney Neoplasms / Q000139:chemically induced* / Q000473:pathology; D008297:Male; D009602:Nitrosamines / Q000633:toxicity*; D009929:Organ Size / Q000187:drug effects; D051381:Rats; D011919:Rats, Inbred Strains; D012694:Serine / Q000633:toxicity*
chemical_list: D002273:Carcinogens; D009602:Nitrosamines; C023845:N-ethyl-N-hydroxyethylnitrosamine; D004052:Diethylnitrosamine; D012694:Serine