نتایج جستجو برای: k pump
تعداد نتایج: 435995 فیلتر نتایج به سال:
Palytoxin binds to Na/K pumps to generate nonselective cation channels whose pore likely comprises at least part of the pump's ion translocation pathway. We systematically analyzed palytoxin's interactions with native human Na/K pumps in outside-out patches from HEK293 cells over a broad range of ionic and nucleotide conditions, and with or without cardiotonic steroids. With 5 mM internal (pipe...
Pharmacological delivery of nitric oxide (NO) stimulates the cardiac Na(+)-K(+) pump. However, effects of NO synthesized by NO synthase (NOS) often differ from the effects of NO delivered pharmacologically. In addition, NOS can become "uncoupled" and preferentially synthesize O(2)(.-), which often has opposing effects to NO. We tested the hypothesis that NOS-synthesized NO stimulates Na(+)-K(+)...
The electrophysiology of the renal Na-K ATPase was studied in isolated perfused amphibian proximal tubules during alterations in bath (serosal) potassium. Intracellular and extracellular ionic activity measurements permitted continuous evaluation of the Nernst potentials for Na+, K+, and Cl- across the basolateral membrane. The cell membrane and transepithelial potential differences and resista...
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