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논문 기본 정보

자료유형
학술저널
저자정보
류은아 (대구한의대학교 한의과대학) 강수진 (대구한의대학교) 송창현 (대구한의대학교) 이봉효 (대구한의대학교) 최성훈 (대구한의대학교) 한창현 (한국한의학연구원) 이영준 (대구한의대학교) 구세광 (대구한의대학교)
저널정보
대한예방한의학회 대한예방한의학회지 대한예방한의학회지 제21권 제2호
발행연도
2017.8
수록면
127 - 137 (11page)
DOI
10.25153/spkom.2017.21.2.013

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Objectives : In our previous study, single co-administration GMODT within 5 min significantly inhibited the oral bioavailability of tamoxifen through variable influences on the absorption and excretion of tamoxifen. Therefore, the object of this study was to elucidate the possible effects on the pharmacokinetics of tamoxifen after single oral co-administration of GMODT with 2.5 hr-intervals. Methods : After 50 mg/kg of tamoxifen treatment, GMODT 100 mg/kg was administered with 2.5 hr-intervals. The plasma were collected at 30 min before administration, 30 min, 1, 2, 3, 4, 6, 8 and 24 hrs after end of GMODT treatment, and plasma concentrations of tamoxifen were analyzed using LC-MS/MS methods. PK parameters of tamoxifen (Tmax, Cmax, AUC, t1/2 and MRTinf) were analysis as compared with tamoxifen single administered rats. Results : Two-half hr-interval co-administration with GMODT induced variable changes on the plasma tamoxifen concentrations as compared with tamoxifen single treated rats, and especially significant (p<0.05) increases of plasma tamoxifen concentrations were demonstrated at 0.5 (199.61%) and 1 hr (101.06%) after end of co-administration with GMODT, and also related significant (p<0.05) decreases of t1/2 (-39.54%) and MRTinf (-43.94%) as compared with tamoxifen single formula treated rats, at dosage levels of tamoxifen 50 mg/kg and GMODT 100 mg/kg with 2.5 hr-intervals, in this experiment. Conclusions : According to the results, GMODT critically decreased on the oral bioavailability of tamoxifen through variable influences on the absorption and excretion of tamoxifen. Hence, the co-administration of GMODT and tamoxifen should be avoided in the comprehensive and integrative medicine, combination therapy of tamoxifen with GMODT on the breast cancer.

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