Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-5-13
pubmed:abstractText
Previous studies implicated the cytochrome P450 (CYP) system as critical in the teratogenic bioactivation of phenytoin (PHT). Fluconazole (FCZ) is an antifungal bis-triazole with potent inhibitory effect on the principal CYP-dependent metabolic pathway of PHT. In this study an in vivo experimental model was used to evaluate the potential ability of FCZ (2, 10, or 50 mg/kg intraperitoneally) to modulate PHT (65 mg/kg intraperitoneally) teratogenesis on day 12 (plug day = day 1) Swiss mice. PHT alone elicited embryocidal and malformative effects, with cleft palate as the major malformation. Pretreatment with the nonembryotoxic dosage of 10 mg FCZ/kg potentiated PHT-induced teratogenesis, as indicated by a twofold (from 6.2% to 13.3%) increment of cleft palate incidence (P < 0.05). Combined treatment with 50 mg FCZ/kg plus PHT resulted in a statistically significant (P < 0.05) increment of the resorption incidence recorded after PHT-alone exposure, but possibly as a consequence of the increased embryolethality, in the loss of the potentiative effect on PHT teratogenesis. Although the mechanistic nature of teratological interaction between FCZ and PHT remains to be established, these results may not support CYP system-mediated metabolic conversion as the mechanistic component of PHT teratogenesis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0040-3709
pubmed:author
pubmed:issnType
Print
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
81-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10069438-Abnormalities, Drug-Induced, pubmed-meshheading:10069438-Animals, pubmed-meshheading:10069438-Anticonvulsants, pubmed-meshheading:10069438-Antifungal Agents, pubmed-meshheading:10069438-Body Weight, pubmed-meshheading:10069438-Cleft Palate, pubmed-meshheading:10069438-Cytochrome P-450 Enzyme System, pubmed-meshheading:10069438-Dose-Response Relationship, Drug, pubmed-meshheading:10069438-Drug Synergism, pubmed-meshheading:10069438-Embryo Loss, pubmed-meshheading:10069438-Female, pubmed-meshheading:10069438-Fetal Death, pubmed-meshheading:10069438-Fetus, pubmed-meshheading:10069438-Fluconazole, pubmed-meshheading:10069438-Maternal-Fetal Exchange, pubmed-meshheading:10069438-Mice, pubmed-meshheading:10069438-Phenytoin, pubmed-meshheading:10069438-Pregnancy, pubmed-meshheading:10069438-Teratogens
pubmed:year
1999
pubmed:articleTitle
Teratological interaction between the bis-triazole antifungal agent fluconazole and the anticonvulsant drug phenytoin.
pubmed:affiliation
Dipartimento di Medicina e Scienze dell'Invecchiamento, Facoltà di Medicina e Chirurgia, Università G. d'Annunzio, Ospedale SS. Annunziata, Chieti, Italy. tiboni@unich.it
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Research Support, Non-U.S. Gov't