Mohamed E. El Halawani
Professor
Avian Endocrinology
Publications (continued)
- Refereed Articles -
Al Kahtane, A., S.W. Kang, M. Kannan, and M.E. El Halawani. 2005. Regulation of prolactin gene expression by vasoactive intestinal peptide and dopamine: Role of Ca 2+ signaling. J. Neuroendocrinol. 17(10):649-655.
Chaiseha, Y. and M. E. El Halawani. 2005. Neuroendocrinology of the Female Turkey Reproductive Cycle. J. Poultry Sci. 42: 87-100 (Invited Review).
Kulick, R.S., Y. Chaiseha, S.W. Kang, I. Rozenboim, and M.E. El Halawani. 2005. The relative importance of vasoactive intestinal peptide and peptide histidine isoleucine as physiological regulators of prolactin in the domestic turkey. Gen. Comp. Endocrinol. 142(3):267-273.
Chaiseha, Y.,
O.M. Youngren, and M.E. El Halawani. 2004. Expression of vasoactive
intestinal peptide receptor messenger RNA in the hypothalamus and
pituitary throughout the turkey reproductive cycle. Biol. Reprod.
70:535-542.
El Halawani, M.E. 2004. Dopaminergic regulation of reproduction in the female turkey. 8th International Symposium on Avian Endocrinology (ISAE), Phoenix, Arizona, USA.
El Halawani, M.E. 2004. Euroendocrinology of prolactin regulation in the domestic turkey. Society for the Study of Reproduction (SSR) Symposium on Neuroendocrinology of Farm Animals, sponsored by USDA, NRI, Vancouver, Canada.
Kang, S.W., L.C. Gazzillo, S. You, E.A. Wong, and M.E. El Halawani. 2004. Localization
of a VIP response element (VRE) in the proximal promoter of the turkey
prolactin gene. Gen. Comp. Endocrinol. 138:157-165.
Lohmus, M., M. Olin, L.F. Sundstrom, M.H. Troedsson, T.W. Molitor, and M. El Halawani. 2004.
Leptin increases T-cell immune response in birds. Gen Comp Endocrinol. 2004 Dec;139(3):245-50.
Rozenboim, I.,
N. Mobarky, R. Heiblum, Y. Chaiseha, S.W. Kang, I. Biran, A. Rosenstrauch,
D. Sklan, and M.E. El Halawani. 2004. The role of prolactin in reproductive
failure associated with heat stress in the domestic turkey. Biol.
Reprod. 2004 Oct:71(4):1208-13.
Al Kahtane, A.,
Y. Chaiseha, and M. El Halawani. 2003. Dopaminergic regulation of
avian prolactin gene transcription. J. Mol. Endocrinol. 31:185-196.
Bhatt, R., O.
Youngren, S. Kang, and M. El Halawani. 2003. Dopamine infusion into
the third ventricle increases gene expression of hypothalamic vasoactive
intestinal peptide and pituitary prolactin and luteinizing hormone
beta subunit in the turkey. Gen. Comp. Endocrinol. 2003 Jan;130(1):41-7.
Chaiseha, Y.,
O. Youngren, K. Al-Zailaie, and M. El Halawani. 2003. Expression
of D1 and D2 dopamine receptors in the hypothalamus and pituitary
during the turkey reproductive cycle: colocalization with vasoactive
intestinal peptide. Neuroendocrinology 2003 Feb;77(2):105-18.
Lohmus, M., L.F.
Sundstrom, M. El Halawani, and B. Silverin. 2003. Leptin depresses
food intake in great tits (Parus major). Gen. Comp. Endocrinol. 2003
Mar;131(1):57-61.
Rozenboim, I.,
R. Huisinga, O. Halevy, and M.E. EI Halawani. 2003. Effect of embryonic
hotostimulation on post-hatch growth of turkey poults. Poultry Sci.
82:1181-1187
Rozenboim, I.,
A. Navot, N. Snapir, A. Rosenstrauch, M.E. El Halawani, G. Gvaryahu,
and A. Degen. 2003. Methods for collecting semen from the ostrich
(struthio camelus) and some of its quantitative and qualitative characteristics.
British Poultry Sci. 44:607-611.
Yupaporn, C.,
O. Youngren, K. Al-Zailaie, and M. EI Halawani. 2003. Expression of
D1 and D2 Dopamine receptors in the hypothalamus and pituitary during
the turkey reproductive cycle: colocalization with vasoactive intestinal
peptide. Neuroendocrinology 610(2):59-73.
Kang, S.W., S.
You, E.A. Wong, and M.E. El Halawani. 2002. Normalization of transfection
efficiency using the beta-lactamase gene of the pGL3 luciferase vector
in primary anterior pituitary cells. Biotechniques 2002 Aug;33(2):326-8,
330.
Kang, S.W., O.M. Youngren, and M.E. El Halawani. 2002. Influence of VIP on prolactinemia
in turkey anterior pituitary cells: role of cAMP second messenger
in VIP-induced prolactin gene expression. Regul. Pep. 2002 Nov 15;109(1-3):39-44.
Youngren, O.,
Y. Chaiseha, K. Al-Zailaie, S. Whiting, S. Kang, and M. El Halawani.
2002. Regulation of prolactin secretion by dopamine at the level of
the hypothalamus in the turkey. Neuroendocrinology 75:185-192.
Ahn, J., S. You,
H. Kim, Y. Chaiseha, and M. El Halawani. 2001. Effects of active immunization
with inhibin alpha subunit on reproductive characteristics of turkey
hens. Biol. Reprod. 65:1594-1600.
Ahn, J., S. You,
H. Kim, D.N. Foster, and M.E. El Halawani. 2001. Molecular cloning
and expression of turkey inhibin-alpha and -betaA subunits. Poultry
Sci. 80:1690-1694.
Farnell, M.B.,
M. El Halawani, S. You, A.P. McElroy, B.M. Hargis, and D.J. Caldwell.
2001. In vivo biologic effects of recombinant-turkey interferon-gamma
in neonatal leghorn chicks: protection against Salmonella enteritidis
organ invasion. Avian Dis. 45:473-478.
Gahali, K., M.E. El Halawani, and I. Rozenboim. 2001. Photostimulated prolactin
release in the Turkey hen: effect of ovariectomy and environmental
temperature. Gen. Comp. Endocrinol. 124:166-172.
You, S., C.C.
Hsu, H. Kim, Y. Kho, Y.J. Choi, M.E. El Halawani, J. Farris, and
D.N. Foster. 2001. Molecular cloning and expression analysis of the
turkey vasoactive intestinal peptide receptor. Gen. Comp. Endocrinol.
124:53-65.
Bluhm, C.K., I. Rozenboim, J. Silsby, and M. El Halawani. 2000. Sex-related differences in the effects of late winter pairing activity and seasonal influences on neuroendocrinology and gonadal development of mallards. Gen. Comp. Endocrinol. 118:310-321.
El Halawani, M.E., S.E. Whiting, J.L. Silsby, G.R. Pitts, and Y. Chaiseha. 2000. Active immunization with vasoactive intestinal peptide in turkey hens. Poultry Sci. 79:349-354.
Pitts, G.R., S. You, D.N. Foster, and M.E. El Halawani. 2000. Evidence for multiple prolactin receptor transcripts in the turkey. Poultry Sci. 79:355-362.
You, S., M.E. El Halawani, and D.N. Foster. 2000. Three different turkey luteinizing hormone receptor (tLH-R) isoforms I: Characterization of alternatively-spliced tLH-R isoforms and their regulated expression in diverse tissues. Biol. Reprod. 62:108-116.
You, S., C-C. Hsu, M.E. El Halawani, and D.N. Foster. 2000. Three different turkey luteinizing hormone receptor (tLH-R) isoforms II: Characterization of differentially-regulated tLH-R isoforms in the ovary. Biol. Reprod. 62:117-124.
Yoo, S.J., S. You, H. Kim, S.C. Kim, Y.-J. Choi, M.E. El Halawani, J. Farris, and D.N. Foster. 2000. Molecular cloning and characterization of alternatively spliced transcripts of the turkey pituitary adenylate cyclase activating polypeptide. Gen. Comp. Endocrinol. 120: 326-335.
Youngren, O.M., G.R. Pitts, Y. Chaiseha, and M.E. El Halawani. 1999. An opioid pathway in the hypothalamus of the turkey that stimulates prolactin secretion. Neuroendocrinology 70(5):317-323.
Buntin, J.D., M.E. El Halawani, M.A. Ottinger, Y. Fan, and A.J. Fiuizzani. 1998. An analysis of sex and breeding stage differences in prolactin binding activity in brain and hypothalamic GnRH concentration in Wilson’s phalarope, a sex role-reversed species. Gen. Comp. Endocrinol. 109:119-132.
Chaiseha, Y., Z. Tong, O.M. Youngren, and M.E. El Halawani. 1998. Transcriptional changes in hypothalamic vasoactive intestinal peptide during a photo-induced reproductive cycle in the turkey. J. Mol. Endocrinol. 21(3):267-275.
Chaiseha, Y., O. Youngren, and M.E. El Halawani. 1998. Vasoactive intestinal peptide secretion by turkey hypothalamic explants. Biol. Reprod. 59:670-675.
Millam, J.R., M.A. Ottinger, C.B. Craig-Veit, Y. Fan, Y. Chaiseha, and M.E. El Halawani. 1998. Multiple forms of GnRH are released from perfused medial basal hypothalamic/preoptic area (MBH/POA) explants in birds. Gen. Comp. Endocrinol. 111:95-101.
Tong, Z., G.R. Pitts, S. You, D.N. Foster, and M.E. El Halawani. 1998. Vasoactive intestinal peptide stimulates turkey prolactin gene expression by increasing transcription rate and enhancing mRNA stability. J. Mol. Endocrinol. 21(3):259-266.
Youngren, O,M., Y. Chaiseha, and M.E. El Halawani. 1998. Regulation of prolactin secretion by dopamine and vasoactive intestinal peptide at the level of the pituitary in the turkey. Neuroendocrinology 68:319-325.
Youngren, O.M., Y. Chaiseha, and M.E. El Halawani. 1998. Serotonergic stimulation of avian prolactin secretion requires on intact dopaminergic system. Gen. Comp. Endocrinol. 112:63-68.
Bluhm, C., I. Rozenboim, J. Silsby, and M.E. El Halawani. 1997. Effects of late winter pairing activity on neuroendocrinology of mallards: Hypothalamic contents of vasoactive intestinal peptide, gonadotrophin releasing hormones I and II, serum luteinizing hormone, and prolactin. Gen. Comp. Endocrinol. 108:446-456.
Chaiseha, Y., O.M. Youngren, and M.E. El Halawani. 1997. Dopamine receptors influence vasoactive intestinal peptide release from turkey hypothalamic explants. Neuroendocrinology 65:423-429.
El Halawani, M.E., O.M. Youngren, and G.R. Pitts. 1997. Vasoactive intestinal peptide as the avian prolactin releasing factor. In Perspectives in Avian Endocrinology. Eds., R. Etches, S. Harvey, Bristol. The Society of Endocrinology, pp. 403-416.
Tong, Z., G.R. Pitts, D.N. Foster, and M.E. El Halawani. 1997. Transcriptional and post-transcriptional regulation of prolactin during the turkey reproductive cycle. J. Mol. Endocrinol. 18:223-231.
El Halawani, M.E., G.R. Pitts, S. Sun, J.L. Silsby, and V. Sivanandan. 1996. Active immunization against vasoactive intestinal peptide prevents photo-induced prolactin secretion in turkeys. Gen. Comp. Endocrinol. 104:76-83.
Millam, J.R., B. Zhang, and M.E. El Halawani. 1996. Egg production of cockatiels (Nymphicus hollandicus) is influenced by number of eggs in the nest after incubation begins. Gen. Comp. Endocrinol. 101:205-210.
Pitts, G.R., O.M. Youngren, R.E. Phillips, and M.E. El Halawani. 1996. Photoperiod mediates the ability of serotonin to release prolactin in the turkey. Gen. Comp. Endocrinol. 104:265-272.
Rozenboim, I., G.R. Pitts, O.M. Youngren, and M.E. El Halawani. 1996. Effect of maternal passive immunization against vasoactive intestinal peptide on prolactin secretion in turkey poults. Biol. Reprod. 54: 670-674.
Youngren, O.M., G.R. Pitts, R.E. Phillips, and M.E. El Halawani. 1996. Dopaminergic control of prolactin in the turkey. Neuroendocrinology 104:225-230.
Youngren, O., Y. Chaiseha, R. Phillips and M. El Halawani. 1996. Vasoactive intestinal peptide concentrations in turkey hypophysial portal blood differ across the reproductive cycle. Gen. Comp. Endocrinol. 103:323-330.
El Halawani,
M.E., J.L. Silsby, and I. Rozenboim. 1995. Increased egg production
by active immunization against vasoactive intestinal peptide in
the turkey (Meleagris gallopavo). Biol. Reprod. 52: 179-183.
Youngren, O.M., G.R. Pitts, R.E. Phillips, and M.E. El Halawani. 1995. The
stimulatory and inhibitory effects of dopamine on prolactin secretion
in the turkey. Gen. Comp. Endocrinol. 98: 111-117.
- Book Chapters -
El Halawani,
M.E., O.M. Youngren, and Y. Chaiseha. 2001. Neuroendocrinology
of prolactin regulation in the domestic turkey. In: Avian Endocrinology.
A. Dawson and C. M. Chaturvedi (Eds.), Narosa Publishing House,
New Delhi, India. pp. 233-244.
Porter, T.E.
and M.E. El Halawani. 2001. Regulation of lactotrophs and prolactin
secretion in non-mammalian vertebrates. In: Prolactin. N. Horseman
(Ed.), Kluwer Academic Publishers, Boston, MA. pp. 63-79.
- Invited Papers and Conference Proceedings -
El Halawani, M.E. 2005. Light spectrum requirement to maximizing breeder hen turkey egg production. Proc. Turkey Research Review and Avian Pneumovirus Symp.
El Halawani, M.E. and Y. Chaiseha. 2003. Broodiness in turkey breeder hens. Proc. Int. Symp. Turkey Reprod., Raleigh, NC. Oct. 2003.
El Halawani , M.E. and S. You. 1998. Turkey incubation behavior: From molecular biology to field biology. Proc. 10th European Poultry Conference. Vol. 1:151-155.
Wong, E.A., A.L. Wentworth, B.C., Wentworth, J.A. Proudman, and M.E. El Halawani. 1998. Generation of transgenic poultry by transfection of primordial germ cells. Proc. Transgenic Animals in Agriculture. J. Murry, G. Anderson, M. Gloughlin, M. Charhauer (Eds.), CAB International, Wallingford, UK.
Wentworth, B., H. Tsai, A. Wentworth, E. Wong, J. Proudman, and M. El Halawani. 1996. Primordial germ cells for the genetic modification of poultry. Proc. Beltsville Symp. Avian Transgenic Tech. Am. Soc. An. Sci. pp 202-227.
Xu, M., J.A. Proudman, G.R.Pitts, E.A. Wong, D.N. Foster and M.E. El Halawani. 1996. Vasocative intestinal peptide stimulates prolactin mRNA expression in turkey pituitary cells: Effects of dopaminergic drugs. Proc. Soc. Exp. Biol. Med. 212: 52-62.
- Abstracts -
El Halawani, M., O. Youngren, J. Proudman, and Y. Chaiseha. 2005. Serotonin receptor subtypes influence prolactin secretion in the turkey. Poultry Sci. 84 (Suppl. 1): 45.
Kang, S., O. Youngren, T. Bakken, and M. El Halawani. 2005. Distribution of serotonergic neurons and fibers and interaction with dopaminergic neurons in the turkey hypothalamus and brainstem. Poultry Sci. 84 (Suppl. 1): 74.
Rozenboim, I., N. Mobarkey, O. Oshpiz, N. Avital, R. Heiblum, and M. El Halawani. 2005.The role of retinal and extra-retinal photoreceptors in reproductive activities of broiler breeder hens. Poultry Sci. 84 (Suppl. 1): 74.
Thayananuphat, A., O. Youngren, S. Kang, T. Bakken, J. Proudman, and M. El Halawani. 2005. Effects of dopamine and oxytocin receptor antagonists on the transition to brooding of young in turkeys. Poultry Sci. 84 (Suppl. 1): 31.
Chaiseha Y., O.M. Youngren, and M.E. El Halawani. 2003. Coexpression of dopamine or vasoactive intestinal peptide receptors with prolactin in the turkey pituitary. Poultry Sci. 82 (Suppl. 1): 44.
Kang, S.W., O.M. Youngren, and M.E. El Halawani. 2003. Time-dependent c-fos expression as a neuronal activation marker following electrical stimulation in the turkey hypothalamus. Poultry Sci. 82 (Suppl. 1): 44.
Thayananuphat, A., S.W. Kang, K. Al-Zailaie, O.M. Youngren, and M.E. El Halawani. 2003. Tyrosine hydroxylase mRNA expression in the turkey hypothalamus. Poultry Sci. 82 (Suppl. 1): 44.
Al-Zailaie, K. and M. El Halawani. 2002. Alterations in GnRH-1 within the turkey hypothalamus throughout the reproductive cycle. Poultry Sci. 80 (Suppl. 1): 29.
Al-Kahtane, A. and M. El Halawani. 2002. Involvement of extra- and intra-cellular Ca2+ in the regulation of PRL secretion by VIP and dopamine in turkey pituitary cells. Poultry Sci. 80 (Suppl. 1): 28.
Bakken, T., S.W. Kang, S. Whiting, and M.E. El Halawani. 2002. Vasoactive intestinal peptide-stimulated prolactin promoter activity is inhibited by a D2 dopamine receptor agonist. Poultry Sci. 80 (Suppl. 1): 28.
Chaiseha, Y., O.M. Youngren, and M.E. El Halawani. 2002. Expression of vasoactive intestinal peptide receptor mRNA in the hypothalamus and pituitary throughout the turkey reproductive cycle. Poultry Sci. 80 (Suppl. 1): 45.
Kang, S.W., T. Bakken, and M.E. EI Halawani. 2002. The suppressive effect of prolactin on prolactin promoter activity in primary anterior pituitary cells from turkey
hens. Poultry Sci. 80 (Suppl. 1): 45.
Youngren, O.M. and M.E. El Halawani. 2002. Inhibitory and stimulatory effects of serotonin (5-HT) on prolactin (PRL) secretion in the turkey. Poultry Sci. 80 (Suppl. 1): 44.
Youngren, O.M., Y. Chaiseha, S.E. Whiting, and M.E. El Halawani. 2001. Dopaminergic neurotransmission controlling PRL/VIP secretion in the turkey. Poultry Sci. 79 (Suppl. 1): 174.
Chaiseha, Y., O.M. Youngren, S.A. Schnell, and M.E. El Halawani. 2001. Expression of D1 and D2 dopamine receptors in the hypothalamus and pituitary during the turkey reproductive cycle. Poultry Sci. 79 (Suppl. 1): 174.
Al-Kahtane, A., D. Deepak, M. Kannan, and M. El Halawani. 2001. Regulation of prolactin gene expression by vasoactive intestinal peptide and dopamine: role of Ca2+ signaling. Poultry Sci. 79 (Suppl. 1): 174.
Al-Zailaie, K., O. Youngren, and M. El Halawani. 2001. Localization of neurons projecting to the infundibular nuclear complex and the median eminence in the turkey hypothalamus. Poultry Sci. 79 (Suppl. 1): 175.
Kang, S., S. You, E. Wong, T. Bakken, and M. El Halawani. 2001. Characterization of the VIP response element (VRE) in turkey prolactin promoter. Poultry Sci. 79 (Suppl 1): 175.
Kang, S.W., L.C. Gazzillo, S. You, E.A. Wong, and M.E. El Halawani. 2001. Regulation of prolactin promoter by vasoactive intestinal peptide in the turkey. Regulatory Peptides 102: 58.
Beltran, R., P. Augustine, M. El Halawani, H. Danforth, A. McElroy, and D. Caldwell. 2001. In vitro or in vivo effects of recombinant turkey interferon gamma (rtIFNγ) on eimeria invasion of infection. Poultry Sci 79 (Suppl 1): 302.
Al-Kahtane, A., Y. Chaiseha, and M.E. El Halawani. 2000. Role of vasoactive intestinal peptide and dopamine in transcriptional regulation of prolactin in turkey pituitary cells. Poultry Sci. 79 (Suppl. 1): 50.
Al-Zailaie, K. and M. El Halawani. 2000. Neuroanatomical relationship between immunoreactive dopamine and vasoactive intestinal peptide neurons in the turkey hypothalamus. Poultry Sci. 79 (Suppl. 1): 50.
El Halawani, M.E., O.M. Youngren, and Y. Chaiseha. 2000. Neuroendocrinology of prolactin regulation in the domestic turkey. VII Int. Symp. Avian Endo. p. 3.
Kang, S.W., S. You, E. Wong, and M.E. El Halawani. 2000. Regulation of prolactin promoter in turkey primary pituitary cells. Poultry Sci. 79 (Suppl. 1): 50.
Ahn, J., S. You, and M. El Halawani. 1999. Active immunization against inhibin- I subunit increases the number of non-graded ovarian yellow follicles in the turkey. Poultry Sci. 78 (Suppl. 1): 65.
Famell, M.B., S. You, M.E. El Halawani, B.M. Hargis, and P.J. Caldwell. 1999. Effect of rtIFNY on salmonella enteritidis organ invation in leghorn chicks. Poultry Sci. 78 (Suppl. 1): 107.
Kulick, R., S. Whiting, G. Pitts, S. You, and M. El Halawani. 1999. Vasoactive intestinal peptide but not peptide histidine isoleucine as a physiological regulator of prolactin in the domestic turkey. Poultry Sci. 78 (Suppl. 1): 65.
Youngren, O., G. Pitts, and M. El Halawani. 1999. Partial characterization of an opiate pathway modulating prolactin secretion in the turkey. Poultry Sci. 78 (Suppl. 1): 65.
Chaiseha, Y. and M.E. El Halawani. 1998. Vasoactive intestinal peptide/peptide histidine isoleucine gene expression in the female turkey during the reproductive cycle. Poultry Sci. 77 (Suppl. 1): 16.
El Halawani, M.E. and S. You. 1998. Turkey incubation behavior: from molecular biology to field biology. 10th Europ. Poult. Conf., Jerusalem, Israel. p. 122.
Pitts, G.R. and M.E. El Halawani. 1998. The use of microdialysis to determine the effects of serotonin, stress, and light on monoamines in the turkey hypothalamus. Poultry Sci. 77 (Suppl. 1): 16.
You, S., I-J. Kim, J. Ahn, J.M. Sharma, and M.E. El Halawani. 1998. Molecular cloning and biological functions of turkey interferon- g. Poultry Sci. 77 (Suppl. 1): 99.
Youngren, O.M., Y. Chaiseha, and M.E. El Halawani. 1998. Dopamine inhibits prolactin secretion induced by vasoactive intestinal peptide via D2 dopamine receptors in the turkey pituitary. Poultry Sci. 77 (Suppl. 1): 16.
Youngren, O.M., Y. Chaiseha, and M.E. El Halawani. 1998. Serotonergic stimulation of avian prolactin secretion requires an intact dopaminergic system. Poultry Sci. 77 (Suppl. 1): 16.
Ahn, J., S. You, D.N. Foster, and M.E. El Halawani. 1997. Molecular cloning of turkey inhibin a - and b A-subunit cDNA. Poultry Sci. 76 (Suppl. 1): 46.
Chaiseha, Y., Z. Tong, O.M. Youngren, and M.E. El Halawani. 1997. Transcriptional regulation of hypothalamic vasoactive intestinal peptide during the turkey reproductive cycle. Poultry Sci. 76 (Suppl 1): 47.
El Halawani, M.E. and S.L. Noll. 1997. Effect of prebreeder lighting and nutrition on subsequent reproductive performance of female turkeys. Poultry Sci. 76 (Suppl. 1): 90.
Schnell, S.A., S. You, D.N. Foster, and M.E. El Halawani. 1997. Molecular characterization of alternatively-spliced avian D 2 dopamine receptors and quantification of mRNA expression during the reproductive cycle of the domestic turkey. Poultry Sci. 75 (Suppl. 1): 24
Schnell, S.A., S. You, D.N. Foster, and M.E. El Halawani. 1997. RT-PCR analysis of D 1 dopamine receptor subtypes in turkey brain. Neurosci. 22(2): 1349.
Yoo, S-J., S. You, M.E. El Halawani, and D.N. Foster. 1997. Partial cloning of the turkey pituitary adenylate cyclase activating polypeptide cDNA and its expression. Poultry Sci. 76 (Suppl. 1): 47.
You, S., C-C Hsu, M.E. El Halawani, and D.N. Foster. 1997. Novel expression of alternatively-spliced turkey luteinizing hormone receptor (tLH-R) isoforms in various nongonadal tissues. Poultry Sci. 76 (Suppl. 1): 47.
Bluhm, C. and M.E. El Halawani. 1996. Effect of active immunization against vasoactive intestinal peptide (VIP) on prolactin, hypothalamic VIP content, and egg production in Mallards. VI Int’l. Symp. Avian Endocrinol.
El Halawani, M.E., S.E. Whiting, J.L. Silsby, and G.R. Pitts. 1996. Active immunization against vasoactive intestinal peptide in first and second cycle turkey hens. Poultry Sci. 75 (Suppl. 1): 93.
El Halawani, M.E., O. Youngren, and G. Pitts. 1996. Vasoactive intestinal peptide as the avian prolactin-releasing factor. VI Int’l. Symp. Avian Endocrinol.
Tong, Z., D.N. Foster, and M.E. El Halawani. 1996. Post-transcriptional regulation of prolactin mRNA steady-state levels during the reproductive cycle of the female turkey. Poultry Sci. 75 (Suppl. 1): 17.
Youngren, O.M., Y. Chaiseha, R.E. Phillips, and M.E. El Halawani. 1996. Vasoactive intestinal peptide concentrations in turkey hypophysial portal blood differ across the reproductive cycle. Poultry Sci. 75 (Suppl. 1): 93.
Chaiseha, Y., O.M. Youngren, R.E. Phillips, and M.E. El Halawani. 1995. Opposing actions of D 1 and D 2 dopamine receptors on vasoactive intestinal peptide release by turkey hypothalamic explants. Poultry Sci. 74 (Suppl. 1): 115.
El Halawani, M.E., G.R. Pitts, S. Sun, J.L. Silsby, and V. Sivanandan. 1995. Active immunization against vasoactive intestinal peptide presents photoperiodically stimulated prolactin secretion in turkeys. Poultry Sci. 74 (Suppl. 1): 157.
Hsu, C.-C., S. You, M.E. El Halawani, and D.N. Foster. 1995. Cloning of a partial avian VIP receptor fragment. Poultry Sci. 74 (Suppl. 1): 116.
Kamyab, A., M. El Halawani, S. Noll, and D. Shaw. 1995. Influence of lighting program, litter type and dietary salt on market tom performance and litter characteristics. Poultry Sci. 74 (Suppl. 1): 81.
Noll, S.L., M. El Halawani, and P.E. Waibel. 1995. Effect of temperature environment and dietary vitamin C supplementation on turkey breeder hens. Poultry Sci. 74 (Suppl. 1): 45.
Pitts, G.R., S. You, D.N. Foster, and M.E. El Halawani. 1995. Prolactin receptor mRNA quantification in the domestic turkey (Meleagris gallopavo). Poultry Sci. 74 (Suppl. 1): 114.
Sun, S.-S., E. A. Wong, J.A. Proudman, B. Wentworth, and M.E. El Halawani. 1995. Prolactin antisense DNA and RNA blocks cVIP-stimulated prolactin secretion from cultured turkey pituitary cells. Poultry Sci. 74 (Suppl. 1): 157.
Tong, Z., D.N. Foster, and M.E. El Halawani. 1995. Transcriptional regulation of the turkey prolactin gene during a photo-induced reproductive cycle. Poultry Sci. 74 (Suppl. 1): 114.
You, S., C.-C. Hsu, M.E. El Halawani, and D.N. Foster. 1995. Cloned partial turkey inhibin _-, A-, and B-subunit cDNAs and analysis of expression during the stages of ovarian follicular development. Poultry Sci. 74 (Suppl. 1): 35.
You, S., C.-C. Hsu, M.E. El Halawani, and D.N. Foster. 1995. Cloning of a partial turkey cytochrome P-450 17_-hydroxylase and P-450 aromatase cDNAs, analysis of their expression during the stages of ovarian follicular development. Poultry Sci. 74 (Suppl. 1): 34.
Youngren, O.M., M.E. El Halawani, G.R. Pitts, and R.E. Phillips. 1995. The paradoxical effects of dopamine on prolactin secretion in the turkey. Poultry Sci. 74 (Suppl. 1): 157.
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