K. Takita et al., AGE-DEPENDENT AND TEMPERATURE-DEPENDENT EFFECTS OF OPIOIDS ON MEDULLA-OBLONGATA RESPIRATORY ACTIVITY - AN IN-VITRO STUDY IN NEWBORN RAT, Brain research, 800(2), 1998, pp. 308-311
Influences of post-natal age (P0-P4) and temperature (22.5 degrees-31.
5 degrees C) on the action(s) of opioids on respiratory activities fro
m neonatal rat brainstem-spinal cord preparations were examined in thi
s study. A temperature-dependent mu-opioid receptor effect on respirat
ion was found. In addition, the effect of morphine increased with post
natal age (P0-P4). Hence, age and temperature must be taken into accou
nt when performing studies on medullary respiration-related structures
using the neonatal rat brainstem-spinal cord preparation. (C) 1998 Pu
blished by Elsevier Science B.V. All rights reserved.