LES CUCURBITACINES STRUCTURE, PROPRIETIE ET TOXICITE

dc.contributor.authorBENHAOUA H. BLIZAK H. REMAL O
dc.date.accessioned2019-03-03T11:13:56Z
dc.date.available2019-03-03T11:13:56Z
dc.date.issued2010
dc.description.abstractCucurbitacins are tetracyclic titerpenes with a cucurbitane skeleton and higly toxic effects. They were identified in about a hundred specices among the 900 species currently known.They are listed in several categories as glycosylated and non glycosylated cucurbitacins namely A, B, C, D, E … .. etc.. Little are the informations availble on the absorption, metabolism and exretion of the aglycone an glycosylated cucurbitacins. The toxic effects recorded in animals and humans, however, indicate that these compounds are absorbed at least to some extent. This study provides a compilation of most studies published in last ten years on the pharmacological and biological effects of these extremely bitter substances. From these studies, it is clear that exposure of laboratory animals to cucurbitacins can lead to toxic effects However, exposure via the oral route results in less toxic effects than exposure via subcutaneously, intraperitoneally and intravenously voices . The oral LD 50 in mice is low and is about 5 mg/kg bw for some cucurbitacins (cucurbitacin D and I ). The main tixicological effects produced by cucurbitacin D in animals appears to be an increase in capillary permeability, irritation of the intestinal mucosa and an increase in intestional motility .en_US
dc.identifier.urihttps://repository.univ-msila.dz/handle/123456789/10267
dc.language.isofren_US
dc.publisherUniversité Mohamed BOUDIAF de M'Silaen_US
dc.subjectTetracyclic tritepenes , toxicity, metabolism, LD 50 , cucurbitacinsen_US
dc.titleLES CUCURBITACINES STRUCTURE, PROPRIETIE ET TOXICITEen_US
dc.typeThesisen_US

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