Functional alteration of nervous system in renovascular hypertension

Toshihiro Koyama, Yukako Hatanaka, Mitsuhiro Goda, Yoshito Zamami, Narumi Hobara, Hiromu Kawasaki

Research output: Contribution to journalReview article

2 Citations (Scopus)

Abstract

The role of nitric oxide (NO)-containing nerves in adrenergic neurotransmission in hypertension was studied in mesenteric resistance arteries without endothelium in 2-kidney-1-clip renal hypertensive rats (2K-1C RHR) and shamoperated normotensive rats (Sham-R). Mesenteric vascular beds isolated from 2K-1C RHR and Sham-R were perfused with Krebs solution and changes in perfusion pressure were measured with a pressure transducer. Perfusion of a NO synthase inhibitor, N-ω-nitro-L-arginine methyl ester (L-NAME), markedly augmented vasoconstrictor responses to periarterial nerve stimulation (PNS) without affecting vasoconstriction induced by exogenously injected noradrenaline. L-NAME significantly increased the neurogenic release of NA evoked by PNS in both 2K-1C RHR and Sham-R preparations. The facilitatory effect of L-NAME based on the inhibition of NO production in 2K-1C RHR was less than that in Sham-R. These results suggest that the function of NO-containing nerves, which presynaptically inhibit adrenergic neurotransmission, is decreased in the renovascular hypertensive model rat.

Original languageEnglish
Pages (from-to)185-189
Number of pages5
JournalYakugaku Zasshi
Volume129
Issue number2
DOIs
Publication statusPublished - Feb 2009

Keywords

  • Adrenergic nerve transmission
  • Nitric oxide
  • Renovascular hypertension

ASJC Scopus subject areas

  • Pharmacology
  • Pharmaceutical Science

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    Koyama, T., Hatanaka, Y., Goda, M., Zamami, Y., Hobara, N., & Kawasaki, H. (2009). Functional alteration of nervous system in renovascular hypertension. Yakugaku Zasshi, 129(2), 185-189. https://doi.org/10.1248/yakushi.129.185