title: In vitro cytotoxicity of guanylhydrazones (MGBG and PGBG) on cultured Chinese hamster ovary cells.
abstract: Guanylhydrazones, methylglyoxal bis(guanylhydrazone) (MGBG) and a new compound, phenylglyoxal bis(guanylhydrazone) (PGBG), interfering with polyamine biosynthesis have considerable potential for the use as antiparasitic and antitumor agents. The effect of these drugs on the cellular viability of Chinese hamster ovary cells was examined by in vitro neutral red assay. The time exposure and metabolic influence was studied. These compounds have a dose- and time-dependent cytotoxicity. The IC50 values were of 597.22 micrograms/ml and 1.77 micrograms/ml for MGBG after 3 and 24 h of incubation, respectively, and 380.50 micrograms/ml for PGBG after 24 h of incubation. The PGBG treatment during 3 h had no cytotoxic effect when the concentrations were lower than 3000 micrograms/ml. With the cytotoxicity assay used, we observed that the presence of S9 in cultured medium did not influence the cytotoxicity of these compounds.
authors.affiliation: Departamento de Toxicología, Instituto de Salud Carlos III, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Santa María
authors.forename: C
authors.initials: C
authors.lastname: Rodríguez
authors.forename: M
authors.initials: M
authors.lastname: San Andrés
authors.forename: F
authors.initials: F
authors.lastname: Sanz
authors.forename: E
authors.initials: E
authors.lastname: Ballesteros
mesh_terms: D012437:Adenosylmethionine Decarboxylase / Q000037:antagonists & inhibitors*; D000818:Animals; D000970:Antineoplastic Agents / Q000633:toxicity*; D016466:CHO Cells / Q000187:drug effects* / Q000473:pathology; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D006224:Cricetinae; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000633:toxicity*; D008935:Mitoguazone / Q000031:analogs & derivatives* / Q000633:toxicity*; D009499:Neutral Red
chemical_list: D000970:Antineoplastic Agents; D004791:Enzyme Inhibitors; C048255:propylglyoxal bis(guanylhydrazone); D009499:Neutral Red; D012437:Adenosylmethionine Decarboxylase; D008935:Mitoguazone