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Acute effects of cadmium on preovulatory serum FSH, LH, and prolactin levels and on ovulation and ovarian hormone secretion in estrous rats.
On the day of diestrus II CFY rats were given 5, 10, or 15 mg/kg cadmium chloride (CdCl2) or 1.0 mL/kg of 0.9% NaCl for FSH, LH, prolactin (PRL), progesterone (P), and estradiol-17 beta (E2) determination, and their secretion rates were calculated.
Effect of local GABA administration on rat ovarian blood flow, and on progesterone and estradiol secretion.
The present findings indicate that local GABAergic mechanisms may be involved in the regulation of ovarian blood flow and hormone secretion.
Study on the role of maternal sex steroid production and metabolism in the embryotoxicity of para-xylene.
It is concluded that para-xylene, by inducing the hepatic monooxygenase system, facilitates the biotransformation of progesterone and 17 beta-oestradiol, which is metabolized by this enzyme system.
Study of the luteinizing hormone-induced increase of ovarian blood flow during the estrous cycle in the rat.
It was concluded that in LH-induced hyperemia, cAMP, prostaglandins and other vasoactive metabolites released during the process of hormone synthesis, and also a beta-adrenergic mechanism, are involved in the regulation of ovarian blood flow.
Responsiveness of the ovary to gonadotrophins in pre- and perinatal life: oestrogen secretion in tissue and organ cultures.
Oestrogens were present in the medium when folliculogensis was fully established in the cultured foetal ovaries and did not depend on the addition of gonadotrophins to the medium.
Stimulation of progesterone production by adrenocorticotropic hormone and prostaglandin E2 in rat luteal cells.
The effect of ACTH seem to be connected with specific ACTH-binding sites of the luteal cell membrane and with increased production of PGE2, and could be prevented by indomethacin.
Effects of oxytocin and vasopressin on the ovarian blood flow, progesterone and oestradiol-17 beta secretion in oestrous rats.
It is suggested that oxytocin has no direct effect on ovarian blood flow and hormone secretion in the rat ovary, but vasopressin, however, is an effective vasoconstrictor in theRat ovary and may in this way reduce hormone synthesis.
Increase of ovarian progesterone secretion by beta 2-adrenergic stimulation in oestrous rats.
It is suggested that ovarian beta 2-adrenergic receptors have a regulatory role in ovarian hormone secretion and fenoterol administered iv increased P secretion without altering ovarian blood flow, whereas noradrenaline and isoproterenol had no effect on P secretion.
In vitro progesterone production of corpus luteum cells of cows fed low and high levels of beta-carotene.
- G. Pethes, E. Horvath, +4 authors J. Haraszti
- Chemistry, MedicineZentralblatt fur Veterinarmedizin. Reihe A
- 13 May 2010
It is suggested that β-carotene feeding has a stimulating effect on the ability of corpus luteum cells to produce progesterone in vitro, and HCG had a dose-dependent stimulatory effect only in the β- carotene supplemented group.
Pancreaticoduodenal lymph flow and lipase activity in acute experimental pancreatitis.
The values of acid-base balance in the pancreaticoduodenal lymph were studied in dogs with and without anesthesia, as well as the effect of acute pancreatitis on flow and lipase activity of pancreas-related lymphatic drainage.