0000000000620814

AUTHOR

A.m. Le Bon

showing 3 related works from this author

Liver subcellular fractions from rats treated by organosulfur compounds from Allium modulate mutagen activation

2000

The effects of in vivo administration of naturally occurring organosulfur compounds (OSCs) from Allium species were studied on the activation of several mutagens. Male SPF Wistar rats were given p.o. one of either diallyl sulfide (DAS), diallyl disulfide (DADS), dipropyl sulfide (DPS) or dipropyl disulfide (DPDS) during 4 consecutive days and the ability of hepatic S9 and microsomes from treated rats to activate benzo[a]pyrene (BaP), cyclophosphamide (CP), dimethylnitrosamine (DMN), N-nitrosopiperidine (N-PiP) and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) was determined in the Ames test. Administration of DAS, DPS and DPDS resulted in a significant increase of the activation of…

MaleNitrosaminesHealth Toxicology and Mutagenesis[SDV]Life Sciences [q-bio]MutagenSulfidesmedicine.disease_causeIsozymeAlliumDimethylnitrosamineAmes testPropane03 medical and health scienceschemistry.chemical_compound0302 clinical medicineCytochrome P-450 Enzyme SystemBenzo(a)pyreneCytochrome P-450 CYP1A1GeneticsmedicineAnimalsDisulfidesRats WistarCyclophosphamideComputingMilieux_MISCELLANEOUS030304 developmental biology0303 health sciencesDose-Response Relationship DrugMutagenicity TestsDiallyl disulfideImidazolesCytochrome P-450 CYP2E1CYP2E1RatsAllyl Compounds[SDV] Life Sciences [q-bio]Dose–response relationshipBiochemistrychemistry030220 oncology & carcinogenesisCytochrome P-450 CYP2B1ToxicityMicrosomes LiverMicrosomeLiver ExtractsOxidoreductasesMutagensSubcellular Fractions
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Post-initiation modulating effects of allyl sulfides in rat hepatocarcinogenesis

2004

Effects of administration of diallyl sulfide (DAS) and diallyl disulfide (DADS) on the promotion stage of hepatocarcinogenesis were investigated in rats using the Ito model. They were compared with those of phenobarbital (PB), a well-known liver promoter in rats. Initiation was induced by a single dose of N-nitrosodiethylamine (NDEA) and 3 weeks later, a partial hepatectomy was conducted. Two weeks after the NDEA injection, rats received either 0.05% allyl sulfides, PB or both in their diet for 8 weeks. Feeding with DAS increased the number of liver preneoplastic foci by 63% with respect to the untreated group. However, rats fed DAS showed a lower foci development than rats fed PB. The DADS…

Malemedicine.medical_treatment[SDV]Life Sciences [q-bio]Toxicologymedicine.disease_causechemistry.chemical_compound0302 clinical medicineLiver Neoplasms ExperimentalDiethylnitrosamineDrug InteractionsDisulfidesComputingMilieux_MISCELLANEOUS0303 health sciencesDiallyl disulfideGeneral MedicineCANCER3. Good healthSpecific Pathogen-Free OrganismsAllyl Compounds[SDV] Life Sciences [q-bio]BiochemistryDiallyl sulfide030220 oncology & carcinogenesismedicine.drugmedicine.medical_specialtySulfidesDIALLYL DISULFITEChemopreventionPreneoplastic foci03 medical and health sciencesInternal medicinemedicineAnimalsAnticarcinogenic AgentsHepatectomyDIALLYL SULFITERats Wistar030304 developmental biologyRatsEndocrinologychemistryRat liverCarcinogensRATPhenobarbitalHepatectomyCarcinogenesisAllyl SulfidePrecancerous ConditionsFood Science
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Flavonoids of honey and propolis : characterization and effects on hepatic drug-metabolizing enzymes and benzo(a)pyrene-DNA binding in rats

1996

The influence of dietary sunflower honey, propolis, and a flavonoid extract of propolis was examined on drug-metabolizing enzyme activities in rat liver and on microsome-mediated binding of benzo[a]pyrene to DNA. Characterization of flavonoids present in sunflower honey and propolis was achieved in order to assess the relative effects of different components of honey and propolis. Honey and propolis contained the same major flavonoids, pinocembrin, chrysin, galangin, and pinobanksin. The concentration of flavonoids was higher in propolis. Sunflower honey produced no significant changes on phase I and phase II enzyme activities and no modification of in vitro binding of benzo[a]pyrene to DNA…

PinocembrinfungiPinobanksinfood and beveragesGeneral ChemistryPropolis[SDV.IDA] Life Sciences [q-bio]/Food engineeringGalanginchemistry.chemical_compoundBenzo(a)pyrenechemistryBiochemistryBenzopyrene[SDV.IDA]Life Sciences [q-bio]/Food engineeringRATChrysinGeneral Agricultural and Biological SciencesEpoxide hydrolaseComputingMilieux_MISCELLANEOUS
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