...M. P. Levick; M. Lovelock; R. Smith; N. A. Saunders 1. Endogenous opioids have been implicated in the control of breathing in neonates, but their role in ventilatory control in adults remains unclear. 2. We studied the relationship between circulating immunoreactive β-endorphin and the ventilatory...

..., and that this response is of low naloxone sensitivity. 17 10 1988 25 10 1988 © 1989 The Biochemical Society and the Medical Research Society 1989 adrenaline adrenocorticotrophin catecholamines cortisol naloxone noradrenaline opioids stress Clinical Science (1989) 76,625-630 625...

... of opioid antagonism on the responses of blood pressure, heart rate and several hormones to exercise were therefore studied in 10 normal men. They exercised in the supine position up to 33% and 66% of their maximal exercise capacity and received in a randomized double-blind cross-over protocol, either...

...Lennart Jivegård; Joar Svanvik 1. Endogenous opioid peptides are found in the enteric nervous system in the gastrointestinal tract. The opioid peptide enkephalin, which has anti-secretory actions in the small intestine, is also contained in nerves in the gall-bladder wall. 2. In experimental...