Effect of duration of stress on pain threshold in rats.
Rats were subjected to immobilization stress of varying duration and their pain thresholds were recorded. It was seen that stress of lesser duration did not affect the endogenous opioid analgesic system while stressor of longer duration stimulated this system to its maximum irrespective of further increasing the duration of the stress condition even upto two fold.
Pednekar
J R
JR
Department of Physiology, Goa Medical College, Bambolim.
Mulgaonker
V K
VK
D000818:Animals; D004723:Endorphins / Q000502:physiology; D007103:Immobilization; D008297:Male; D010147:Pain Measurement; D017288:Pain Threshold / Q000502:physiology*; D051381:Rats; D013315:Stress, Psychological / Q000503:physiopathology*; D013997:Time Factors; D014828:Vocalization, Animal / Q000502:physiology
D004723:Endorphins