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  • Title: Endothelial nitric oxide attenuates vasoconstrictor responses to nerve stimulation and noradrenaline in the rat tail artery.
    Author: Vo PA, Reid JJ, Rand MJ.
    Journal: Eur J Pharmacol; 1991 Jun 18; 199(1):123-5. PubMed ID: 1893923.
    Abstract:
    The effects of the nitric oxide synthesis inhibitor, NG-nitro-L-arginine (NOLA), have been examined in perfused segments of rat tail artery. NOLA (1 and 10 microM) significantly enhanced the vasoconstrictor responses to perivascular nerve stimulation (5 Hz, 10 s) and noradrenaline (10 ng). The enhancing effects of NOLA were prevented by L-arginine, but not by D-arginine, and were absent in endothelium-denuded artery segments. The results suggest that nitric oxide derived from endothelial cells attenuates vasoconstrictor responses to both nerve stimulation and noradrenaline.
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