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Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : BilobalideType of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : 5 microgram/mlDuration : -Type of interaction : PharmacokineticsInteraction with drug : AstemizoleDose/Conc.(drug) : 1 micromolarResult : NegativeRemark : Bilobalide could not inhibit CYP2J2 catalyzed astemizole.
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : Ginkgolide AType of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : 5 microgram/mlDuration : -Type of interaction : PharmacokineticsInteraction with drug : AstemizoleDose/Conc.(drug) : 1 micromolarResult : PositiveRemark : Ginkgolide A inhibited the CYP2J2 catalyzed astemizole with 1% inhibition.
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : Ginkgolide BType of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : 5 microgram/mlDuration : -Type of interaction : PharmacokineticsInteraction with drug : AstemizoleDose/Conc.(drug) : 1 micromolarResult : NegativeRemark : Ginkgolide B could not inhibit CYP2J2 catalyzed astemizole.
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : Ginkgolide CType of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : 5 microgram/mlDuration : -Type of interaction : PharmacokineticsInteraction with drug : AstemizoleDose/Conc.(drug) : 1 micromolarResult : PositiveRemark : Ginkgolide C inhibited CYP2J2 catalyzed astemizole with 1% inhibition.
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : ginkgolidesType of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : 0.1 - 10 micrograms/mLDuration : -Type of interaction : PharmacokineticsInteraction with drug : -Dose/Conc.(drug) : -Result : NegativeRemark : Within 0.1 to 10 micrograms/mL, the hydrolyzed ginkgolides showed direct inhibition against CYP1A2, 2B6,2C8,2C9,2C19,2D6,2E1,3A4m (midazolam as substrate) and 3A4t (testosterone as sustrate), with IC50 values determined to be 410 micrograms/mL (concentrations expressed as the sum of equivalent concentrations of ginkgolideA, B and K). For the metabolism-dependent inhibition studies, the preincubation of 30 min did not substantially alter the IC50 values when compared with the corresponding values in the direct inhibition studies. The activities and mRNA expression levels for CYP1A2 and 2B6 with in each drug-treated group (0.1, 1 and 10 micrograms/mL) were not affected after the 48-h incubation. For CYP3A4, the activity and mRNA expression level were not altered when incubated with 0.1 and 1 micrograms/mL of hydrolyzed ginkgolides. When incubated with hydrolyzed ginkgolides at 10 micrograms/mL, the relative activity and relative mRNA expression level of CYP3A4 remarkably increased to 4.59+/-3.67 and 17.2+/-9.16-fold of corresponding vehicle control values, respectively. The hydrolyzed ginkbolides is not likely to cause DDI via inhibition of the major human CYPs.Note : DDI = drug-drug interaction
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : Ginkgo biloba ext. (EGb761)Type of experiment : non specifiedType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : -Duration : -Type of interaction : PharmacokineticsInteraction with drug : -Dose/Conc.(drug) : -Result : PositiveRemark : The full ext. was found to strongly inhibit CYP2C9 (Ki=14+/-microgram/mL.)Note : Data incomplete
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : The terpenoidic fractionType of experiment : non specifiedType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : -Duration : -Type of interaction : PharmacokineticsInteraction with drug : -Dose/Conc.(drug) : -Result : PositiveRemark : The terpenoidic fraction inhibited only CYP2C9 (Ki=15+/-6 microgram/mL.)Note : Data incomplete
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : Flavonoidic fraction of EGb761Type of experiment : non specifiedType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : -Duration : -Type of interaction : PharmacokineticsInteraction with drug : -Dose/Conc.(drug) : -Result : PositiveRemark : The flavonoidic fraction of EGB761 showed high inhibition of CYP2C9, CYP1A2, CYP2E1, and CYP3A4 (ki's between 4.9 and 55 microgram/mL)Note : Data incomplete
Part Used : ไม่ระบุActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : -Type of experiment : in vitroType of animal : -Type of study : -N(Total) : -N(Treatment) : -Sex : -Age : -Route : -Dose/Conc.(herb) : -Duration : -Type of interaction : PharmacokineticsInteraction with drug : -Dose/Conc.(drug) : -Result : PositiveRemark : Type of experiment: human liver microsomes Results: Weak or negligible inhibitory activity was found for the terpene trilactones (ginkgolides A, B, C and J, and bilobalide), and the flavonol glycosides. However 50% inhibitory activity (IC50) was found at concns. less than 10 microgram/ml for the flavonol aglycons (kaempferol, quercetin, apigenin, myricetin, tamarixetin) with CYP1A2 and CYP3A. Quercetin, the biflavone amentoflavone, sesamin, as well as (Z,Z)-4,4'-(1,4-pentadiene-1,5-diyl) diphenol and 3-nonadec-8-enylbenzene-1,2-diol, were also inhibitors of CYP2C9.Note : Data incomplete
Part Used : ใบActivity : CYTOCHROME P-450 INHIBITIONSolvent/Active Compound : -Type of experiment : humanType of animal : -Type of study : Double-blind trialN(Total) : 11N(Treatment) : 11Sex : -Age : -Route : Oral administrationDose/Conc.(herb) : *Duration : -Type of interaction : PharmacokineticsInteraction with drug : FlurbiprofenDose/Conc.(drug) : -Result : EquivocalRemark : Dose: * Single 100 mg dose of flurbiprofen + standardized G. biloba leaf preposition (Ginkgold, 3 doses of 120 mg) - Each 60 mg Ginkgold tablet contained 6.6 microgram of amentoflavone and 61.2 microgram of quercetin. - Mean kinetic variables for flurbiprofen with either placebo or G. biloba were elimination half-life, 3.9 vs. 3.5 h; total AUC, 57 vs. 55 microgram/mL per hour; and oral clearance 32.9 vs. 31.6 mL/min. None of these differences was significant.Note : - Data incomplete