Brain renin-angiotensin: Central control of secretion of atrial natriuretic factor from the heart

Hiroshi Itoh, Kazuwa Nakao, Takayuki Yamada, Narito Morii, Shozo Shiono, Akira Sugawara, Yoshihiko Saito, Masashi Mukoyama, Hiroshi Arai, Hiroo Imura

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

To elucidate the modulatory role of the brain renln-angiotensin system in the regulation of the secretion of atrial natriuretic factor (ANF) from the heart, the effects of intracerebroventricular administration of angiotensin II on the plasma ANF level were examined in conscious unrestrained rats. Administration of angiotensin II in doses of 100 ng and 1 fig significantly enhanced ANF secretion induced by volume loading with infusion of 3 ml of saline (peak values of the plasma ANF level: control, 220 ± 57 pg/ml; angiotensin II 100 ng, 1110 ± 320 pg/ml, p < 0.01; angiotensin II 1μg, 1055 ± 60 pg/ml, p < 0.01). Injection of angiotensin II alone had no significant effect on the basal plasma ANF level. Central angiotensin H-induced ANF secretion was significantly attenuated by pretreatment with intravenous administration of the V1-receptor antagonist of vasopressin or intracerebroventricular administration of phentolamine. These results indicate that the brain renln-angiotensin system modulates ANF secretion in response to volume loading through the stimulation of vasopressin secretion or the activation of the central α-adrenergic neural pathway.

Original languageEnglish
Pages (from-to)I-57-I-61
JournalHypertension
Volume11
Issue number2
DOIs
Publication statusPublished - 1988 Feb
Externally publishedYes

Keywords

  • Blood pressure
  • Body fluid homeostasis
  • Central nervous system
  • V receptor
  • Vasopressin
  • Volume expansion
  • α-adrenergic system

ASJC Scopus subject areas

  • Internal Medicine

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  • Cite this

    Itoh, H., Nakao, K., Yamada, T., Morii, N., Shiono, S., Sugawara, A., Saito, Y., Mukoyama, M., Arai, H., & Imura, H. (1988). Brain renin-angiotensin: Central control of secretion of atrial natriuretic factor from the heart. Hypertension, 11(2), I-57-I-61. https://doi.org/10.1161/01.hyp.11.2_pt_2.i57