title: Electrical activity of the rat uterus during early pregnancy and abortion.
abstract: Electrical activity of the rat uterus was recorded for 1 h daily on days 2--9 of pregnancy with 6 electrodes chronically implanted in the left uterine horn. In 10 untreated and 7 ergocornine treated rats, activity decreased in frequency and intensity during the first days of pregnancy. After day 3 activity was present in only about 30% of electrodes as compared to 85% on day 2. Abortion was induced by ergocornine injected on day 5. In these rats the frequency of bursts increased on days 8 and 9. During the peak of activity the majority of bursts spread in the cervical direction.
mesh_terms: D000022:Abortion, Spontaneous; D000818:Animals; D004567:Electrodes, Implanted; D004873:Ergolines / Q000494:pharmacology; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats; D014590:Uterine Contraction / Q000187:drug effects
chemical_list: D004873:Ergolines