RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Positive inotropic activity induced by a dehydroisoandrosterone derivative in isolated rat heart model

        L. Figueroa-Valverde,F. Dı´az-Cedillo,E. Garcı´a-Cervera,E. Pool Go´mez,M. Lo´pez-Ramos,M. Rosas-Nexticapa,R. Martinez-Camacho 대한약학회 2013 Archives of Pharmacal Research Vol.36 No.10

        Experimental studies indicate that some steroidderivatives have inotropic activity; nevertheless, there isscarce information about the effects of the dehydroisoandrosteroneand its derivatives at cardiovascular level. Inaddition, to date the cellular site and mechanism of actionof dehydroisoandrosterone at cardiovascular level is veryconfusing. In order, to clarify those phenomena in this study,a dehydroisoandrosterone derivative was synthesized withthe objective of to evaluate its activity on perfusion pressureand coronary resistance and compare this phenomenon withthe effect exerted by dehydroisoandrosterone. The Langendorfftechnique was used to measure changes on perfusionpressure and coronary resistance in an isolated rat heartmodel in absence or presence of dehydroisoandrosterone andits derivative. Additionally, to characterize the molecularmechanism involved in the inotropic activity induced bydehydroisoandrosterone derivative was evaluated by measuringleft ventricular pressure in absence or presence offollowing compounds; flutamide, prazosin, metoprolol andnifedipine. The results showed that dehydroisoandrosteronederivative significantly increased the perfusion pressure andcoronary resistance in comparison with the control conditionsand dehydroisoandrosterone. Additionally, other dataindicate that dehydroisoandrosterone derivative increase leftventricular pressure in a dose-dependent manner [1 9 10-9–1 9 10-4 mmol]; nevertheless, this phenomenon was significantlyinhibited by nifedipine at a dose of 1 9 10-6mmol. In conclusion, these data suggest that dehydroisoandrosteronederivative induces positive inotropic activitythrough of activation the L-type calcium channel.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼