Search Results - "Pitts, G.R."

Active Immunization against Vasoactive Intestinal Peptide Prevents Photo-Induced Prolactin Secretion in Turkeys by El Halawani, M.E., Pitts, G.R., Sun, S., Silsby, J.L., Sivanandan, V.

“…Photostimulation initiates and maintains the rise in circulating prolactin (PRL) observed during the reproductive cycle of the female turkey. Vasoactive…”
Get full text

Serotonergic Stimulation of Prolactin Secretion Is Inhibited by Vasoactive Intestinal Peptide Immunoneutralization in the Turkey by El Halawani, M.E., Youngren, O.M., Rozenboim, J., Pitts, G.R., Silsby, J.L., Phillips, R.E.

“…The neuronal mechanisms that govern prolactin (PRL) secretion in the turkey appear to involve monoaminergic systems. Considerable evidence indicates that…”
Get full text

Increased egg production by active immunization against vasoactive intestinal peptide in the turkey (Meleagris gallopavo) by EL HALAWANI, M. E, SILSY, J. L, ROZENBOIM, I, PITTS, G. R

“…Vasoactive intestinal peptide (VIP) is a hypothalamic prolactin (PRL)-releasing factor in the turkey. The hypothesis in the present study was that active…”
Get full text

Dopaminergic Control of Prolactin Secretion in the Turkey by Youngren, Orlan M., Pitts, Gilbert R., Phillips, Richard E., El Halawani, Mohamed E.

“…The stimulatory and inhibitory effects of dopamine (DA) upon avian prolactin (PRL) secretion suggest that, in birds, these actions are mediated by multiple DA…”
Get full text

The stimulatory and inhibitory effects of dopamine on prolactin secretion in the turkey by Youngren, O M, Pitts, G R, Phillips, R E, el Halawani, M E

“…Dopamine (DA) was infused into the third ventricle of anesthetized laying turkey hens at various concentrations to determine its effect on both basal prolactin…”
Get full text

Evidence for multiple prolactin receptor transcripts in the turkey by Pitts, G R, You, S, Foster, D N, El-Halawani, M E

“…Multiple prolactin receptor (PRL-R) mRNA transcript isoforms have been identified in mammals, but there are conflicting reports concerning the number of avian…”
Get full text

Vasoactive intestinal peptide stimulates prolactin mRNA expression in turkey pituitary cells: effects of dopaminergic drugs by Xu, M, Proudman, J A, Pitts, G R, Wong, E A, Foster, D N, el Halawani, M E

“…It is well documented that vasoactive intestinal peptide (VIP) is a prolactin (PRL)-releasing factor and that dopamine (DA) is an inhibitory neurotransmitter…”
Get more information

Modulation of ovarian cytochrome P450 17 alpha-hydroxylase and cytochrome aromatase messenger ribonucleic acid by prolactin in the domestic turkey by Tabibzadeh, C. (University of Minnesota, St. Paul, MN.), Rozenboim, I, Silsby, J.L, Pitts, G.R, Foster, D.N, El Halawani, M.E

“…The effect of exogenous ovine prolactin (oPRL) on preovulatory follicle P450 17 alpha-hydroxylase (C17) and aromatase (ARO) mRNA abundance was investigated in…”
Get full text

Hypothalamic and posterior pituitary content of vasoactive intestinal peptide and gonadotropin-releasing hormones I and II in the turkey hen by Rozenboim, I, Silsby, J.L, Tabibzadeh, C, Pitts, G.R, Youngren, O.M, El Halawani, M.E

“…An inverse relationship often exists between prolactin (Prl) and LH in avian species. Our study was designed to investigate the relationship between…”
Get full text

Photoperiod Mediates the Ability of Serotonin to Release Prolactin in the Turkey by Pitts, Gilbert R., Youngren, Orlan M., Phillips, Richard E., El Halawani, Mohamed E.

“…Photostimulation (PS) of turkeys increases the number of hypothalamic vasoactive intestinal peptide (VIP)-immunoreactive neurons, the number of anterior…”
Get full text

Effect of maternal passive immunization against vasoactive intestinal peptide on prolactin secretion in turkey poults by Rozenboim, I. (Hebrew University of Jerusalem, Rehovot, Israel.), Pitts, G.R, Youngren, O.M, El Halawani, M.E

“…The purpose of this study was to examine the role of vasoactive intestinal peptide (VIP) in prolactin (PRL) release in young turkey poults. Poults obtained…”
Get full text

Role of vasoactive intestinal peptide in the control of prolactin-induced turkey incubation behavior. I. Acute infusion of vasoactive intestinal peptide by Pitts, G.R, Youngren, O.M, Silsby, J.L, Foster, L.K, Foster, D.N, Rozenboim, I, Phillips, R.E, El Halawani, M.E

“…Vasoactive intestinal peptide (VIP) stimulates prolactin (PRL) secretion. Ovine PRL induces incubation behavior in avian species. This study was designed to…”
Get full text

Role of vasoactive intestinal peptide in the control of prolactin-induced turkey incubation behavior. II. Chronic infusion of vasoactive intestinal peptide by Pitts, G.R, Youngren, O.M, Silsby, J.L, Rozenboim, I, Chaiseha, Y, Phillips, R.E, Foster, D.N, El Halawani, M.E

“…Hyperprolactinemia is associated with incubation behavior in avian species. Increased nesting activity is a major indication of incubation behavior. Vasoactive…”
Get full text

Theca cell cytochrome P450 17-hydroxylase and aromatase messenger ribonucleic acid abundance and serum steroid levels during follicular atresia associated with incubation behavior in the domestic turkey hen by Tabibzadeh, C. (University of Minnesota, St. Paul, MN.), Silsby, J.L, Rozenboim, I, Pitts, G.R, Foster, D.N, El Halawani, M.E

“…This study was designed to examine changes in cytochrome P450 17 alpha-hydroxylase (C17) and aromatase (ARO) mRNA contents in the theca layer of preovulatory…”
Get full text