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哇巴因和二氢哇巴因对蛙皮Na(+)-K+ ATP酶抑制作用的比较。

Comparison of the inhibitory effect of ouabain and dihydroouabain on the Na(+)-K+ ATPase from frog skin.

作者信息

Nichols J R, Maldonado H S

机构信息

Department of Biology, Abilene Christian University, TX 79699-8199.

出版信息

Gen Pharmacol. 1993 Mar;24(2):349-52. doi: 10.1016/0306-3623(93)90315-o.

DOI:10.1016/0306-3623(93)90315-o
PMID:8387052
Abstract
  1. The effects of ouabain and dihydroouabain (DHO) on Na(+)-K+ ATPase from frog skin were investigated. 2. Ouabain seemed to be a more effective inhibitor, reaching near maximum inhibition at 10(-5) M while DHO reached near maximum at 10(-3) M. 3. Both inhibitors acted within the first few minutes, but ouabain inhibited more strongly over virtually the whole 2 hr considered. 4. Pre-incubation of the enzyme with ATP or Na+ reduced the level of inhibition due to subsequent ouabain or DHO, but preincubation with K+ did not.
摘要
  1. 研究了哇巴因和二氢哇巴因(DHO)对蛙皮钠钾ATP酶的影响。2. 哇巴因似乎是一种更有效的抑制剂,在10^(-5) M时达到接近最大抑制,而DHO在10^(-3) M时达到接近最大抑制。3. 两种抑制剂在最初几分钟内起作用,但在整个2小时的观察期内,哇巴因的抑制作用更强。4. 酶与ATP或Na+预孵育可降低随后哇巴因或DHO引起的抑制水平,但与K+预孵育则没有这种效果。

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1
Comparison of the inhibitory effect of ouabain and dihydroouabain on the Na(+)-K+ ATPase from frog skin.哇巴因和二氢哇巴因对蛙皮Na(+)-K+ ATP酶抑制作用的比较。
Gen Pharmacol. 1993 Mar;24(2):349-52. doi: 10.1016/0306-3623(93)90315-o.
2
Dihydroouabain, a reversible inhibitor of the sodium pump in frog skin.二氢哇巴因,一种蛙皮中钠泵的可逆抑制剂。
Pflugers Arch. 1987 Jul;409(3):323-7. doi: 10.1007/BF00583484.
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The antagonistic effect of K+o and dihydro-ouabain on the Na+ pump current of single rat and guinea-pig cardiac cells.细胞外钾离子(K⁺o)和二氢哇巴因对单个大鼠和豚鼠心肌细胞钠泵电流的拮抗作用。
J Physiol. 1995 May 1;484 ( Pt 3)(Pt 3):617-28. doi: 10.1113/jphysiol.1995.sp020691.
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Two biologically active isomers of dihydroouabain isolated from a commercial preparation.从一种商业制剂中分离出的两种具有生物活性的二氢哇巴因异构体。
Biochim Biophys Acta. 1999 Nov 16;1472(3):486-97. doi: 10.1016/s0304-4165(99)00153-1.
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Inhibition of rat brain Na+-K+-ATPase by triterpene glycosides from holothurians.海参三萜糖苷对大鼠脑钠钾ATP酶的抑制作用
Toxicon. 1989;27(8):927-36. doi: 10.1016/0041-0101(89)90104-9.
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Na,K-ATPase polypeptide upregulation responses in lens epithelium.晶状体上皮中钠钾ATP酶多肽上调反应
Invest Ophthalmol Vis Sci. 1998 Apr;39(5):763-8.
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Independence of the positive inotropic effect of ouabain from the inhibition of the heart Na+/K+ pump.哇巴因正性肌力作用独立于对心脏钠钾泵的抑制作用。
Proc Natl Acad Sci U S A. 1980 May;77(5):3067-9. doi: 10.1073/pnas.77.5.3067.
8
Voltage dependence of the Na-K ATPase: measurements of ouabain-dependent membrane current and ouabain binding in oocytes of Xenopus laevis.钠钾ATP酶的电压依赖性:非洲爪蟾卵母细胞中哇巴因依赖性膜电流及哇巴因结合的测量
Pflugers Arch. 1988 Oct;412(6):579-88. doi: 10.1007/BF00583758.
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The kinetics of the inhibition by dihydroouabain of the sodium pump current in single rabbit cardiac Purkinje cells.双氢哇巴因对单个兔心脏浦肯野细胞钠泵电流的抑制动力学。
Naunyn Schmiedebergs Arch Pharmacol. 1992 Jan;345(1):100-7. doi: 10.1007/BF00175476.
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Mechanisms of neuronal hyperexcitability caused by partial inhibition of Na+-K+-ATPases in the rat CA1 hippocampal region.大鼠海马CA1区钠钾ATP酶部分抑制引起神经元过度兴奋的机制
J Neurophysiol. 2002 Dec;88(6):2963-78. doi: 10.1152/jn.00244.2002.

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