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  • Title: L-nitroarginine increases blood pressure in the rat.
    Author: Kobayashi Y, Ikeda K, Shinozuka K, Nara Y, Yamori Y, Hattori K.
    Journal: Clin Exp Pharmacol Physiol; 1991 Jun; 18(6):397-9. PubMed ID: 1914242.
    Abstract:
    1. Effects of administration of NG-nitro-L-arginine (NO2Arg), a guanidino nitroarginine derivative, for 1 week on blood pressure and some vascular responses of rats were studied. 2. A significant rise of the systolic blood pressure was observed after the administration of NO2Arg with food (0.023% in weight, about 2.8 mg of NO2Arg per rat per day). Relaxation by acetylcholine decreased markedly in ring preparations of the thoracic aorta of NO2Arg-treated rats. However, glyceryltrinitrate-induced relaxation was not reduced after NO2Arg administration, suggesting that NO2Arg administration specifically inhibited endothelium-dependent relaxation. 3. An increase of blood pressure may be because oral administration of NO2Arg inhibited endothelium-dependent relaxation in vivo suggesting that the release of EDRF is important in physiological control of blood pressure.
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