Release of vasopressin, cortisol and beta-endorphin in tetraplegic subjects in response to head-up tilt

Paraplegia. 1991 Feb;29(2):120-4. doi: 10.1038/sc.1991.16.


Plasma levels of beta-endorphin, vasopressin and cortisol during head-up tilt were measured in tetraplegic patients and in normal healthy subjects. In tetraplegic patients rapid tilt from the horizontal to 30 degrees or 60 degrees head-up induced orthostatic hypotension and increased plasma levels of cortisol, beta-endorphin and vasopressin. In control subjects head-up tilt failed to alter plasma levels of these hormones. These data show that the head-up position in tetraplegics causes various endocrine reactions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Pressure
  • Female
  • Heart Rate
  • Humans
  • Hydrocortisone / blood*
  • Male
  • Middle Aged
  • Posture*
  • Quadriplegia / blood*
  • Quadriplegia / physiopathology
  • Vasopressins / blood*
  • beta-Endorphin / blood*


  • Vasopressins
  • beta-Endorphin
  • Hydrocortisone