Pietrangelo T, Giampietro L, De Filippis B, La Rovere R, Fulle S, Amoroso R. Effect of milrinone analogues on intracellular calcium increase in single living H9C2 cardiac cells.
Eur J Med Chem 2010;
45:4928-33. [PMID:
20801556 DOI:
10.1016/j.ejmech.2010.08.001]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Revised: 07/27/2010] [Accepted: 08/01/2010] [Indexed: 12/22/2022]
Abstract
The synthesis of milrinone analogues where the 4-pyridyl moiety was replaced by an ester or amide group is reported. Only amide derivatives are able to support intracellular calcium influx following chemical depolarization with 60 mM KCl in a percentage varying from 20 to 45% of differentiated H9C2 cardiomyocytes. Those cells were differentiated after chronic exposure to 10 nM retinoic acid which induces the expression of voltage-gated calcium channels. Analogues of milrinone containing an ester function did not show significant activity.
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