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Igarashi, M. et al.

Igarashi, Hirata, Yamaguchi, Sugae, Kadomoto, Jimbu, Daimon, Kato, Tominaga,

Mechanism of an inhibitory effect of nipradilol on rat vascular smooth muscle cell growth.

The aim of this study was to clarify the mechanism of an inhibitory effect of nipradilol on cultured rat vascular smooth muscle cell (VSMC) growth. After being starved, cultured VSMCs were stimulated by 5% fetal bovine serum with various concentrations of nipradilol. Nipradilol dose-dependently decreased the values of [(3)H]-thymidine incorporation, cell numbers and total cellular protein content, and the levels of phosphorylated extracellular signal-regulated protein kinase 1/2 and p38. It also suppressed the level of proliferative cell nuclear antigen in a dose-dependent manner. In contrast, nipradilol did not change the level of the phosphorylated value of c-jun NH(2)-terminal protein kinase or cytoplasmic histone-associated DNA fragments in VSMCs. These results indicate that nipradilol suppresses cell growth without apoptosis in rat VSMCs, suggesting that it could be effective for preventing the progression of restenosis after angioplasty.[1]

References

Mechanism of an inhibitory effect of nipradilol on rat vascular smooth muscle cell growth. Igarashi, M., Hirata, A., Yamaguchi, H., Sugae, N., Kadomoto, Y., Jimbu, Y., Daimon, M., Kato, T., Tominaga, M. J. Atheroscler. Thromb. (2003) [Pubmed]

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