/LABORATORY ANIMALS: Chronic Exposure or Carcinogenicity/ ... Under the conditions of the bioassay, 2-biphenylamine hydrochloride was not carcinogenic for F344/N rats of either sex. 2-Biphenylamine hydrochloride was carcinogenic for B6C3F1 female mice, inducing hemangiosarcomas at various sites. The evidence for an association between the admin of 2-biphenylamine hydrochloride and the incr incidence of hemangiosarcomas in male mice was equivocal. Levels of Evidence of Carcinogenicity: Male Rats: Negative; Female Rats: Negative; Male Mice: Equivocal; Female Mice: Positive. /2-Biphenylamine hydrochloride/
/LABORATORY ANIMALS: Chronic Exposure or Carcinogenicity/ Diets containing 0.1 or 0.3% 2-biphenylamine hydrochloride were fed to groups of 50 Fischer 344 rats and 50 B6C3F1 mice of each sex for 104-106 weeks. Mean body weights of high-dose rats of both sexes and of low-dose male rats were slightly lower than those of controls. No significant differences in survival times were observed between dosed and control groups. In dosed male rats there was a compound-related increased incidence of kidneys with inflammatory cells and interstitial fibrosis. No tumors in dosed rats were associated with the chemical. Mean body weights of high-dose male mice were slightly lower than those of controls, and survival of high-dose male mice was also significantly (P<0.01) reduced relative to controls. Hemangiosarcoma of the circulatory system occurred in female mice with a statistically significant (P<0.001) positive trend. The observed incidences of hemangiosarcoma were 0/49 (0%), 1/50 (2%), and 7/50 (14%) in controls, low- and high-dose groups, respectively. In individual group comparisons, the incidence in the high-dose group was significantly (P<0.01) higher than that in the controls. The hemangiosarcoma seen in female mice were quite rare with only 6/816 (0.7%) previously seen in controls at the same laboratory and no more than 3 in any group of 50. Hemangiosarcoma also occurred in male mice with a statistically significant positive trend (P=0.04 by a life table test), with incidences of 0/50 (0%), 2/50 (4%), and 3/50 (6%), in control, low-dose and high-dose groups, respectively. The development of hemangiosarcoma in the high-dose male mice might have been curtailed by the significantly reduced survival time in this group.
/GENOTOXICITY/ Chemically-induced sister chromatid exchange was measured in vivo in bone marrow of Chinese hamsters. Admin either ip or orally and increased sister chromatid exchange frequencies were noted with 6 of 6 direct-acting genotoxins and with 9 of 14 activation-dependent genotoxins.
/GENOTOXICITY/ In the presence of a rat liver 9,000 g supernatant, several aminobiphenyls were assayed for mutagenicity to Salmonella typhimurium. Among the 3 possible aminobiphenyls isomers, only 4-aminobiphenyl was a potent mutagen.
Compositions for Treatment of Cystic Fibrosis and Other Chronic Diseases
申请人:Vertex Pharmaceuticals Incorporated
公开号:US20150231142A1
公开(公告)日:2015-08-20
The present invention relates to pharmaceutical compositions comprising an inhibitor of epithelial sodium channel activity in combination with at least one ABC Transporter modulator compound of Formula A, Formula B, Formula C, or Formula D. The invention also relates to pharmaceutical formulations thereof, and to methods of using such compositions in the treatment of CFTR mediated diseases, particularly cystic fibrosis using the pharmaceutical combination compositions.
Methods of treatment of amyloidosis using bi-aryl aspartyl protease inhibitors
申请人:John Varghese
公开号:US20060014737A1
公开(公告)日:2006-01-19
The invention relates to novel compounds and methods of treating diseases, disorders, and conditions associated with amyloidosis. Amyloidosis refers to a collection of diseases, disorders, and conditions associated with abnormal deposition of A-beta protein.
Phenyl 4-(2-oxopyrrolidin-1-yl)benzenesulfonates and phenyl 4-(2-oxopyrrolidin-1-yl)benzenesulfonamides as new antimicrotubule agents targeting the colchicine-binding site
agents designated as N-phenyl 4-(2-oxoimidazolidin-1-yl)benzenesulfonates (PIB–SOs) and phenyl4-(2-oxoimidazolidin-1-yl)benzenesulfonamides (PIB–SAs). Our previous structure-activity relationship studies (SAR) focused on the aromatic ringB of PIB-SOs and PIB-SAs leaving the impact of the phenylimidazolidin-2-one moiety (ring A) on the binding to the colchicine-bindingsite (C-BS) poorly studied. Therefore
CYCLIC ETHER PYRAZOL-4-YL-HETEROCYCLYL-CARBOXAMIDE COMPOUNDS AND METHODS OF USE
申请人:Genentech, Inc.
公开号:US20140088117A1
公开(公告)日:2014-03-27
Cyclic ether pyrazol-4-yl-heterocyclyl-carboxamide compounds of Formula I, including stereoisomers, geometric isomers, tautomers, and pharmaceutically acceptable salts thereof, wherein R
2
is a cyclic ether and X is thiazolyl, pyrazinyl, pyridinyl, or pyrimidinyl, are useful for inhibiting Pim kinase, and for treating disorders such as cancer mediated by Pim kinase. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.
Compounds having the formula
1
or therapeutically acceptable salts thereof, are histone deacetylase (HDAC) inhibitors. Preparation of the compounds, compositions containing the compounds, and treatment of diseases using the compounds are disclosed.