title: Plasma cAMP in normal and abnormal human pregnancy.
abstract: Plasma cAMP was determined using the method of Tovey et al. in normal pregnant women with a mean concentration of 18.9 +/- 0.8 pmol/ml (x- +/- SEM). Between weeks 9-12 and 33-36 of gestation, there were two peaks, with a mean cAMP of 22.5 +/- 2.4 which were significantly increased in comparison to the other weeks of pregnancy. Significantly decreased values were found in patients with threatened abortion (weeks  12-28) which terminated in abortion (11.6 +/- 2.4; p < 0.01). In premature labor no differences were found. During therapy with fenoterol there were highly significantly increased plasma cAMP levels (48.2 +/- 2.8; p < 0.0005). During thyroid hormone therapy in euthyroid goiter, cAMP was significantly decreased (14.0 +/- 1.4; p < 0.05). 1 week after cessation of therapy a highly significant increase of cAMP was observed (38.2 +/- 6.9; p < 0.0005). There was a negative linear regression between T3 and cAMP (2p < 0.01). In pregnancy with hypertension cAMP was significantly elevated (30.5 +/- 3.8 p < 0.0005), but nearly normal under antihypertensive therapy. In pregnancy with edema only, no difference was found. Induction of labor with PGE2 alpha was followed by a decrease of plasma cAMP.
mesh_terms: D000033:Abortion, Threatened / Q000097:blood; D000242:Cyclic AMP / Q000097:blood*; D005260:Female; D005280:Fenoterol / Q000627:therapeutic use; D006801:Humans; D007751:Labor, Induced; D007752:Obstetric Labor, Premature / Q000097:blood / Q000188:drug therapy; D011225:Pre-Eclampsia / Q000097:blood; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood*; D011460:Prostaglandins F / Q000627:therapeutic use; D013974:Thyroxine / Q000494:pharmacology; D014284:Triiodothyronine / Q000494:pharmacology
chemical_list: D011460:Prostaglandins F; D014284:Triiodothyronine; D005280:Fenoterol; D000242:Cyclic AMP; D013974:Thyroxine