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Table 4 Effects of atropine microinjected in the left or right POA-AHA on hormone serum levels at 11:00 or 17:00 h on predicted proestrus day

From: The participation of the muscarinic receptors in the preoptic-anterior hypothalamic areas in the regulation of ovulation depends on the ovary

Group
POA-AHA
Estradiol
pg/mL
LH
ng/mL
FSH
ng/mL
Proestrus 11:00 h
 Intact 20.3 ± 0.3 0.7 ± 0.3 2.3 ± 0.4
 Left vehicle 32.4 ± 9.0 0.4 ± 0.05 1.6 ± 0.13
 Left atropine 27.2 ± 5.5 0.2 ± 0.03 2.4 ± 0.8
 Right vehicle 33.4 ± 4.9 0.5 ± 0.02 1.2 ± 0.09
 Right atropine 21.6 ± 1.9 0.4 ± 0.09 1.2 ± 0.3
Proestrus 17:00 h
 Intact 15.7 ± 2.9 22.8 ± 1.9 7.2 ± 0.50
 Left vehicle 23.6 ± 6.0 24.9 ± 2.5 4.9 ± 2.5
 Left atropine 3.9 ± 0.9abc 3.6 ± 1.5a 98.8 ± 4.4abc
 Right vehicle 37.2 ± 1.3 20.7 ± 1.8 4.1 ± 0.2
 Right atropine 33.2 ± 10.2 21.2 ± 2.6 8.3 ± 2.5
  1. The mean ± SEMs for the estradiol, LH and FSH of rats subjected to microinjection of vehicle or atropine into the left or right POA-AHA, at 13:00 h of diestrus-2 day, and sacrificed at 11:00 or 17:00 h on the predicted proestrus day
  2. a p < 0.01 vs. Left vehicle (ANOVA, followed Tukey test)
  3. b p < 0.01 vs. right atropine (ANOVA, followed Tukey test)
  4. c p < 0.01 vs. intact group (ANOVA, followed Tukey test)