Attenuation of pregnancy-induced analgesia by hypogastric neurectomy in rats.
This study confirms previous observations of an increase in pain threshold prepartum followed by a decrease postpartum. Moreover hypogastric nerve transection significantly attenuated the analgesia of pregnancy by a factor of 5 but did not abolish it. Thus, the hypogastric nerve plays a major, but not exclusive, role in the analgesia of pregnancy.
D000818:Animals; D004723:Endorphins / Q000502:physiology; D005260:Female; D007001:Hypogastric Plexus / Q000502:physiology*; D010146:Pain / Q000503:physiopathology*; D049590:Postpartum Period; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats; D012684:Sensory Thresholds
D004723:Endorphins