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  • Title: [The regulation of the spontaneous activity of the ureter by a Na+/Ca++-metabolic mechanism].
    Author: Kazarian KV, Tiraian AS, Oganesian AS, Akopian RR.
    Journal: Fiziol Zh SSSR Im I M Sechenova; 1990 Jan; 76(1):115-20. PubMed ID: 2159900.
    Abstract:
    In presence of the specific Na(+)-K(+)-pump blocking agent ouabain reestablishment of spike activity of the ureter smooth muscle cells occurred, the latters having been preliminarily incubated in sodium-free solution. The reestablishment lasted not over 15 minutes. After substitution of calcium ions with barium ones, the period of the spike generation increased. The lithium ions are able to substitute the sodium ions for reestablishing the calcium action potentials. The ureter activity seems to be reestablished in sodium-free solution with participation of the Na+/Ca(++)-exchange mechanism, which is quite specific for the calcium ions.
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