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编 号:F707225
分子式:C26H24Cl2FN3O3
分子量:516.39
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5mg
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10mg
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25mg
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50mg
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100mg
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生物活性:
YM-244769 dihydrochloride is a potent, selective and orally active Na+/Ca2+ exchanger (NCX) inhibitor. YM-244769 dihydrochloride preferentially inhibits NCX3 and suppresses the unidirectional outward NCX current (Ca2+ entry mode), with IC50s of 18 nM and 50 nM, respectively. YM-244769 dihydrochloride efficiently protects against hypoxia/reoxygenation-induced SH-SY5Y neuronal cell damage. YM-244769 dihydrochloride can also increase urine volume and urinary excretion of electrolytes in mice.

体内研究:
YM-244769 (0.1-1 mg/kg; p.o.; once) exhibits dose-dependently natriuretic action in mice and significantly increases urinary excretion of Ca2+ as well as Ca2+/Cr ratio.Animal Model:Wild-type C57BL/6J mice and NCX-KO mice
Dosage:0.1, 0.3 and 1 mg/kg
Administration:Oral administration, once
Result:Caused a dose-dependent increase (up to approximately 200%) in urine volume and urinary excretion of electrolytes (Na+, K+ and Cl-). Natriuretic actions were equivalently observed in NCX1-KO and WT, but disappeared in NCX2-KO and double KO.

体外研究:
YM-244769 (0.003-1 μM) inhibits dose dependently the initial rates of 45Ca2+ uptake into NCX1, NCX2, and NCX3 transfectants with IC50 values of 68 ± 2.9, 96 ± 3.5, and 18 ± 1.0 nM, respectively.YM-244769 (0.3 or 1 μM) efficiently protects against the hypoxia/reoxygenation-induced lactate dehydrogenase (LDH) release in SH-SY5Y cells and in LLC-PK1 cells (1 μM).YM-244769 possesses reverse mode-selectivity.YM-244769 (1 and 10 μM) inhibits NCX current (INCX) in a concentration- and [Na+]i-dependent manner, the IC50 against the unidirectional outward INCX (Ca2+ entry mode) is 0.05 μM. The IC50 values against the bidirectional outward and inward INCX are similar and approximately 100 nM with a Hill coefficient of about 1.YM-244769 is trypsin-insensitive.
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