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  • Title: Antiproliferative action of cyclic GMP-elevating vasodilators in cultured rabbit aortic smooth muscle cells.
    Author: Kariya K, Kawahara Y, Araki S, Fukuzaki H, Takai Y.
    Journal: Atherosclerosis; 1989 Dec; 80(2):143-7. PubMed ID: 2558661.
    Abstract:
    In cultured rabbit aortic smooth muscle cells (SMCs), sodium nitroprusside (SNP) (10(-7) to 10(-4) M), atrial natriuretic peptide (ANP) (10(-9) to 10(-6) M) and 8-bromo-cyclic GMP (10(-6) to 10(-3) M) inhibited the whole blood serum (WBS)-induced DNA synthesis by about 30%. The doses of SNP and ANP necessary for the inhibition of the WBS-induced DNA synthesis were similar to those necessary for the formation of cellular cyclic GMP (cGMP). These agents were effective even when added 6 h after stimulation of the cells with WBS. These results suggest that cGMP inhibits the proliferation of rabbit aortic SMCs by inhibiting the progression from the G1 into S phase of the cell cycle and raise the possibility that cGMP-elevating vasodilators may suppress the atherogenic process by inhibiting vascular SMC proliferation.
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