Steroid concentrations in uterine lymph: possible mediators of uterine and ovarian blood flow during the estrous cycle and early pregnancy in the pig

摘要: Current investigations strongly suggest a relationship between local concentrations of estrogens and progesterone (P^) the function periarterial adrenergic (vasoconstrictor) nerves innervating uterine ovarian arteries. During estrous cycle ewe, cow sow, increases in estrogeniprogesterone (E/P^) ratio systemic blood are associated with elevations flow through vascular bed. In addition, exogenous administra­ tion estrogen has been shown to increase ewes. Lymphatic vessels, which close linear apposition adventitia arteries may trans­ port steroids utero-ovarian nerves. Techniques were thus developed for acute chronic collection lymph from Yorkshire gilts. Concentrations estrone (E^), estradiol-173 (EgB) P^ compared those during early pregnancy. Changes subsequently contrasted patterns these throughout Experiment I; Uterine lymphatic catheters chronically implanted into gilts on Days 0 or 1 (n=5), 5 (n=4), 11 (n=5) 15 (n=4) cycle. sampled daily each gilt until patency was lost, averaged =5 days. E^, Egg P^^