SMOOTH MUSCLE RESPONSES AS ALTERED BY HUMORAL BACKGROUND.

Abstract

In man, monkey, rat and dog oxytocin normally has a vasodilator effect. Following surgical or chemical sympathetic denervation oxytocin becomes a vasoconstrictor. The dilator effect can be restored by infusing adrenaline or stimulating the sympathetic nerves. Oxytocin also becomes a vasoconstrictor when the circulating concentration of oestrogens is raised either naturally in the presence of oestrogens (as in rats in oestrus) or experimentally. In dogs the dilator response to oxytocin can be restored by giving atropine, and then either infusing adrenaline or stimulating the sympathetic nervous system. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1964
Accession Number
AD0614478

Entities

People

  • L. M. Pickford

Organizations

  • University of Edinburgh

Tags

DTIC Thesaurus Topics

  • Anatomy
  • Atropine
  • Biological Sciences
  • Chemical Compounds
  • Estrogens
  • Muscles
  • Nerves
  • Nervous System
  • Pituitary And Hypothalamic Hormones And Analogues
  • Smooth Muscle
  • Sympathetic Nervous System

Fields of Study

  • Biology
  • Medicine

Readers

  • Cardiovascular Physiology