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词汇 ouabain
释义

Definition of ouabain in English:

ouabain

noun ˈuːəbeɪnwäˈbī-in
mass nounChemistry
  • A toxic compound obtained from certain trees, used as a very rapid cardiac stimulant. It is a polycyclic glycoside.

    〔化〕乌本苷,哇巴因

    Example sentencesExamples
    • We have found in this study that treating of cell suspension with sodium azide, SNP, ouabain or amiloride before irradiation significantly modifies the spectrum of cell attachment enhancement.
    • We treated rat lungs with amiloride and ouabain, respectively.
    • An unexpected result is that ouabain and amiloride, which do not react directly with cytochrome c oxidase, modify significantly the absorption of the photoacceptor (mirrored by the action spectrum in our case).
    • It would have been preferable to discard this possibility by more complete blockade of active sodium transport (with the use of a sodium channel blocker in addition to ouabain, instead of ouabain alone).
    • On the extracellular side of the membrane, a small extracellular domain is composed of short loops between various transmembrane helices and contains the binding site for ouabain.

Origin

Late 19th century: via French from Somali wabayo, denoting a tree that yields poison (used on arrow points) containing ouabain.

Definition of ouabain in US English:

ouabain

nounwäˈbī-in
Chemistry
  • A toxic compound obtained from certain trees, used as a very rapid cardiac stimulant. It is a polycyclic glycoside.

    〔化〕乌本苷,哇巴因

    Example sentencesExamples
    • On the extracellular side of the membrane, a small extracellular domain is composed of short loops between various transmembrane helices and contains the binding site for ouabain.
    • We treated rat lungs with amiloride and ouabain, respectively.
    • We have found in this study that treating of cell suspension with sodium azide, SNP, ouabain or amiloride before irradiation significantly modifies the spectrum of cell attachment enhancement.
    • An unexpected result is that ouabain and amiloride, which do not react directly with cytochrome c oxidase, modify significantly the absorption of the photoacceptor (mirrored by the action spectrum in our case).
    • It would have been preferable to discard this possibility by more complete blockade of active sodium transport (with the use of a sodium channel blocker in addition to ouabain, instead of ouabain alone).

Origin

Late 19th century: via French from Somali wabayo, denoting a tree that yields poison (used on arrow points) containing ouabain.

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