title: Some new aryl-sydnones: effects on murine tumours.
abstract: The effects of new aryl-sydnones: 3-[4-X-3-nitrophenyl]-1,2,3-oxadiazolium-5-olates, where X = Cl (SYD-1); pyrrolidino (SYD-2); piperidino (SYD-3) and morpholino (SYD-4) on the survival of mice bearing Sarcoma 180, Ehrlich carcinoma, B10MCII (Fibrous histiocytoma) and L1210 leukemia ascitic tumours, on the proliferation of cultured tumour cells and on the synthesis of DNA in L1210 leukemia were determined. SYD-1 and SYD-2 in vivo significantly enhanced the survival of S180, Ehrilich and B10MCII tumour-bearing mice. Furthermore, SYD-2 showed significant activity against L1210. SYD-3 and SYD-4 did not show antitumour activity. SYD-1, in vitro was the most cytotoxic against all the above tumour cells. All of the drugs tested inhibited thymidine uptake by L1210 cells, SYD-4 being the least active.
authors.affiliation: Instituto Nacional do Câncer, Centro de Pesquisa Básica, Rio de Janeiro, Brasil.
authors.forename: N
authors.initials: N
authors.lastname: Grynberg
authors.forename: R
authors.initials: R
authors.lastname: Gomes
authors.forename: T
authors.initials: T
authors.lastname: Shinzato
authors.forename: A
authors.initials: A
authors.lastname: Echevarria
authors.forename: J
authors.initials: J
authors.lastname: Miller
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D001772:Blood Cell Count / Q000187:drug effects; D002286:Carcinoma, Ehrlich Tumor / Q000188:drug therapy; D004353:Drug Evaluation, Preclinical; D018219:Histiocytoma, Benign Fibrous / Q000188:drug therapy; D007939:Leukemia L1210 / Q000188:drug therapy; D008297:Male; D051379:Mice; D008811:Mice, Inbred DBA; D008815:Mice, Inbred Strains; D015394:Molecular Structure; D009374:Neoplasms, Experimental / Q000188:drug therapy*; D012510:Sarcoma 180 / Q000188:drug therapy; D013329:Structure-Activity Relationship; D013558:Sydnones / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*
chemical_list: D000970:Antineoplastic Agents; D013558:Sydnones