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Bovine luteal oxytocin synthesis and secretion in vitro : effects of phorbol ester, calcium ionophore and indomethacin

Creator:: Cosola-Smith, Carrie A.
Abstract:: Experiments were conducted to examine the effects of a tumor-promoting phorbol ester, a calcium ionophore and indomethacin on bovine luteal oxytocin (OT) synthesis and secretion and progesterone secretion. Six 18-month-old crossbred beef heifers in Exp. 1 and five similar heifers in Exp. 2 were observed twice daily for estrus using...
Resource Type:: Masters Thesis
Full Text:: examine the effects of a tumor-promoting phorbol ester, a calcium ionophore and indomethacin on bovine

Cellular mechanisms of altered bovine luteal function in response to exogenous gonadotropin-releasing hormone

Creator:: Bertrand, Jennifer Elaine
Abstract:: To determine whether membrane-related events may be involved in attenuated luteal function after gonadotropin-releasing hormone (GnRH) administration, corpora lutea (CL) were removed from 10 beef heifers on day 7 of the estrous cycle after i.v. injection of GnRH or saline on day 2 of the cycle. Luteal slices were incubated...
Resource Type:: Dissertation
Full Text:: Jennifer Elaine Bertrand A THESIS submitted to Oregon State Univerisity in partial fulfillment

Corpus luteum function in hysterectomized and unilaterally hysterectomized ewes treated with gonadotropin-releasing hormone

Creator:: Whitmore, Diana L.
Resource Type:: Masters Thesis
Full Text:: . In each experiment, crossbred ewes were assigned randomly in equal numbers into four groups in a 22

Cyclopropenoid fatty acid-induced suppression of ovine corpus luteum function

Creator:: Cortell, Anna Katherine
Resource Type:: Masters Thesis
Full Text:: Three experiments were conducted to examine the effect of sterculic acid (SA), a cyclopropenoid fatty

Embryonic and hormonal control of ovine uterine arterial constriction

Creator:: Pope, William Frederick
Abstract:: The role of the conceptus and ovarian hormones in regulating ovine uterine vasoconstriction was investigated. The uterine artery ipsilateral to the ovary bearing the corpus luteum in ten nonpregnant and eight pregnant ewes was utilized in two experiments. Arteries of nonpregnant and pregnant ewes were removed at necropsy on day...
Resource Type:: Masters Thesis
Full Text:: of NE was less (P< 0.01) than that of arteries of nonpregnant ewes. A third experiment of 2x2

Factors affecting luteal oxytocin synthesis and/or secretion by the ovine and bovine corpus luteum

Creator:: Paslay, Elizabeth M.
Abstract:: Experiments were conducted to determine whether endogenous progesterone regulates synthesis and/or secretion of luteal oxytocin (OT). In experiment 1, mature ewes (n=5 per group) were assigned randomly to control or mifepristone (RU 486) treatment groups. Ewes were injected twice daily s.c. with vehicle or 10 mg RU 486 from days...
Resource Type:: Masters Thesis
Full Text:: LUTEUM by Elizabeth M. Paslay A THESIS submitted to Oregon State University in partial fulfillment

Gonadotropin releasing hormone-induced alteration of corpus luteum function in beef heifers

Creator:: Rodger, Lynn Dian
Abstract:: Two experiments were conducted to evaluate the effects of gonadotropin releasing hormone (GnRH) on the function of the bovine corpus luteum during the estrous cycle. In Experiment 1, 10 heifers were assigned randomly into two groups with each heifer serving as her own control. Heifers in Group I (n=5) were...
Resource Type:: Masters Thesis
Full Text:: cycle. Gonadotropin releasing hormone caused a significant release of luteinizing hormone (LH) on both

In Vivo and In Vitro effects of a cyclopropenoid fatty acid on progesterone synthesis by the ovine corpus luteum

Creator:: Tumbelaka, Ligaya
Abstract:: Two experiments were conducted to examine the effect of a cyclopropenoid fatty acid on luteal cell function. In Exp. 1, 12 mature ewes were mated to a fertile ram, assigned to two groups (n = 6/group) and laparotomized on day 18 of gestation. Ewes with corpora lutea (CL) in both...
Resource Type:: Masters Thesis
Full Text:: In Vivo and In Vitro effects of a cyclopropenoid fatty

Involvement of myristoylated alanine-rich c kinase substrate (MARCKS) protein in prostaglandin F2α- induced secretion of oxytocin by the bovine corpus luteum

Creator:: Salli, Ugur
Abstract:: Prostaglandin F₂α (PGF₂α), a stimulatory hormone of luteal oxytocin secretion, is known to activate protein kinase C (PKC); however, the intracellular signals that promote exocytosis of oxytocin remain to be elucidated. Myristoylated alanine-rich C kinase substrate (MARCKS), a protein specifically phosphorylated by PKC, crosslinks actin filaments associated with the inner...
Resource Type:: Dissertation
Full Text:: Bovine Corpus Luteum. Abstract Approved: FREDRICK STORMSHAK Prostaglandin F2 (PGF2), a stimulatory

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

Creator:: Hazzard, Timothy McLagan
Resource Type:: Dissertation
Full Text:: ). Endometrial OTR and OTR mRNA were greater in control than in E2 and P4-treated ewes. In a subsequent

ScholarsArchive@OSU

Bovine luteal oxytocin synthesis and secretion in vitro : effects of phorbol ester, calcium ionophore and indomethacin

Cellular mechanisms of altered bovine luteal function in response to exogenous gonadotropin-releasing hormone

Corpus luteum function in hysterectomized and unilaterally hysterectomized ewes treated with gonadotropin-releasing hormone

Cyclopropenoid fatty acid-induced suppression of ovine corpus luteum function

Embryonic and hormonal control of ovine uterine arterial constriction

Factors affecting luteal oxytocin synthesis and/or secretion by the ovine and bovine corpus luteum

Gonadotropin releasing hormone-induced alteration of corpus luteum function in beef heifers

In Vivo and In Vitro effects of a cyclopropenoid fatty acid on progesterone synthesis by the ovine corpus luteum

Involvement of myristoylated alanine-rich c kinase substrate (MARCKS) protein in prostaglandin F2α- induced secretion of oxytocin by the bovine corpus luteum

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

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