498. THE GnRH SYSTEM IN ZEBRAFISH (Danio rerio): DEVELOPING A MODEL SYSTEM FOR FUNCTIONAL STUDIES OF GnRH MULTIPLICITY. Kight, Katherine¹, Steven, Colin¹, Ijiri, Shigeho¹, Alok, Deoraj¹, Klenke, Ulrike¹, Zohar, Yonathan¹, ¹ Center of Marine Biotechnology, University of Maryland Biotechnology Institute, Baltimore, MD
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499. DELTA-OPIOID RECEPTOR IS EXPRESSED IN A DISCRETE POPULATION OF GnRH-I AND TH CONTAINING NEURONS. Ottinger, Mary Ann¹, Thompson, Nichola¹, Micevych, Paul², ¹ Department of Animal and Avian Sciences, College Park, MD² Department of Neurobiology, Los Angeles, CA
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500. PROGESTERONE INCREASES DYNORPHIN CONCENTRATIONS IN CSF COLLECTED FROM THE THIRD VENTRICLE OF EWES. Goodman, Robert¹, Adams, Van¹, Valent, Miroslav¹, Connors, John¹, Hardy, Steve¹, McManus, Christina¹, Hileman, Stanley¹, ¹ Dept of Physiology & Pharmacology, West Virginia University, Morgantown, WV
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501. INFLUENCE OF STAGE OF THE ESTROUS CYCLE ON GABA_B RECEPTOR mRNA EXPRESSION IN THE RAT HYPOTHALAMUS. Lubbers, Laura¹, Kuehl, David², Llanza, Nancy³, Romanosky, Christa³, Hileman, Stanley³, ¹ Center for Neuroendocrine Studies, Amherst, MA² Department of Veterinary Biosciences, Urbana, IL³ Department of Physiology and Pharmacology, Morgantown, WV
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502. IDENTIFICATION OF GENES THAT ARE DIFFERENTIALLY EXPRESSED IN THE FEMALE RAT HYPOTHALAMUS DURING AGING UTILIZING mRNA DIFFERENTIAL DISPLAY AND HIGH DENSITY DNA GENE CHIP ANALYSIS. Wade, Marlene¹, Brann, Darrell¹, ¹ Neurobiology Program, Institute of Molecular Medicine and Genetics, Augusta, Georgia
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503. GABA_B RECEPTORS IN THE A15 AREA MEDIATE ESTRADIOL NEGATIVE FEEDBACK IN ANESTROUS EWES. Hardy, Steven¹, McManus, Christie¹, Valent, Miroslav¹, Hileman, Stan¹, Connors, John¹, Goodman, Robert¹, ¹ Dept of Physiology and Pharmacology, Morgantown, WV
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504. REPRODUCTIVE DEVELOPMENT AND BEHAVIOR OF LAMBS EXPOSED IN UTERO TO AN AROMATASE INHIBITOR DURING A CRITICAL PERIOD FOR SEXUAL DIFFERENTIATION. Roselli, Charles¹, Schrunk, Jessica², Stadelman, Henry¹, Resko, John¹, Stormshak, Fredrick², ¹ Department of Physiology & Pharmacology, Portland, OR² Department of Animal Sciences, Corvallis, OR
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505. DIFFERENTIAL EXPRESSION OF RELAXIN-1 AND RELAXIN-3 MESSENGER RNA AND LOCALIZATION OF RELAXIN RECEPTORS IN THE PREGNANT MOUSE. Reytomas, Irna Grace^1,2, Burazin, Tanya¹, Tregear, Geoffrey¹, Parry, Laura^1,2, ¹ Howard Florey Institute, Parkville, AU² Department of Zoology, Parkville, AU
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506. INCREASED LACTOTROPH ABUNDANCE IN INCUBATING CHICKEN HENS CAN BE MIMICKED BY EXTENDED TREATMENT OF PITUITARY CELLS IN VITRO WITH VASOACTIVE INTESTINAL POLYPEPTIDE (VIP). Porter, Tom¹, Lopez, Marisol¹, Mike, Rebecca¹, Huberty, Andrea¹, ¹ Department of Animal and Avian Sciences, College Park, MD
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507. INSIGHTS INTO A MECHANISM BY WHICH STRESS INTERFERES WITH THE OVULATORY CYCLE. Breen, Kellie¹, Modrick, Mary¹, Wessinger, Emily¹, Karsch, Fred¹, ¹ Department of Physiology and Reproductive Sciences Program, Ann Arbor, MI
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508. ESTROGEN INDUCES TRANSLOCATION OF PSA-NCAM TO THE CELL MEMBRANE OF NEURONS IN HUMAN HIPPOCAMPAL SLICES. Ivaldo, Silva¹, Williamson, Anne², Chang, Aimee¹, Spencer, Dennis², Horvath, Tamas¹, Garcia-Segura, Luis³, Naftolin, Frederick¹, ¹ Obstetrics and Gynecology and Center for Research in Reproductive Biology, New Haven, CT² Dept of Neurosurgery, New Haven, CT³ Instituto Cajal, Madrid, ES
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509. EXPRESSION OF GONADOTROPIN RELEASING HORMONE (GnRH) IN THE PITUTARY GLAND OF A TELEOST FISH, THE GILTHEAD SEABREAM (Sparus aurata). Zmora, Nilli¹, Wong, Ten-Tsao¹, Kight, Kathy¹, Zohar, Yonathan¹, ¹ Center of Marine Biotechnology, Baltimore, MD
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510. THE ROLE(S) OF TYPE II GnRH RECEPTOR IN VERTEBRATE REPRODUCTION. Alok, Deoraj^1,2, Zohar, Yonathan¹, ¹ Center of Marine Biotechnology, Baltimore, MD² Sygen International, Berkeley, CA
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511. EFFECTS OF THE INJECTION OF THYMULIN INTO THE MEDIAN HYPOTHALAMUS (MH) ON OVULATORY RESPONSE IN PREPUBERTAL MICE TREATED WITH EQUINE CHORIONIC GONADOTROPIN (eCG) AND GONADOTROPIN-RELEASING HORMONE (GnRH). García, Lorena¹, Hinojosa, Lorena¹, Olvera, Esteban¹, Domínguez, Roberto¹, Rosas, Patricia¹, ¹ Biology of Reproduction Research Unit, México City, México
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512. PRODUCTION OF BIOLOGICALLY ACTIVE RECOMBINANT GOLDFISH GONADOTROPINS IN TRANSGENIC RAINBOW TROUT. Morita, Tetsuro¹, Yoshizaki, Goro¹, Kobayashi, Makito², Takeuchi, Toshio¹, ¹ Department of Aquatic Biosciences, Tokyo, Japan² Department of Aquatic Bioscience, Tokyo, Japan
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513. PERSISTENT EFFECTS OF PRENATAL TREATMENT WITH ANTI-ANDROGENS ON THE HYPOTHALAMIC-PITUITARY-GONADAL AXIS OF ADULT SPOTTED HYENAS. Place, Ned¹, Holekamp, Kay², Sisk, Cheryl³, Weldele, Mary¹, Coscia, Elizabeth¹, Drea, Christine⁴, Glickman, Stephen¹, ¹ Dept of Psychology, Berkeley, CA² Dept of Zoology, East Lansing, MI³ Dept of Psychology, East Lansing, MI⁴ Dept of Biological Anthropology, Durham, NC
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514. ENZYMATIC REMOVAL OF ASPARAGINE-LINKED CARBOHYDRATES FROM DIMER hCG AND RESULTANT BIOACTIVITY. Richard, Craig¹, DeLoia, J¹, ¹ Dept of Obstetrics, Gynecology and Reproductive Sciences, Pittsburgh, PA
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515. SEX DIFFERENCES IN FSH AND LH SECRETION BY THE PITUITARY TREATED IN VITRO WITH THYMULIN. Hinojosa, Lorena¹, García, Lorena¹, Quiróz, Ubaldo¹, Chavira, Roberto², Romano, Marta C³, Domínguez, Roberto¹, Rosas, Patricia¹, ¹ Biology of Reproduction Research Unit, MX² INCMN, MX³ CINVESTAV, México City, MX
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516. FUNCTIONAL DIFFERENCES IN THE GnRH SIGNAL TRANSDUCTION PATHWAYS BETWEEN T3-1 AND LT2 CELLS. Wolfe, Michael¹, Roberson, Mark², Call, Gerald¹, ¹ Department of Molecular and Integrative Physiology, Kansas City, KS² Department of Biomedical Sciences, Ithaca, NY
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517. ESTROGEN INCREASES LACTOTROPH ABUNDANCE AND PROLACTIN mRNA LEVELS IN THE RAT PITUITARY P₀ CELL LINE. Fu, Xiaoqin¹, Porter, Tom¹, ¹ Department of Animal and Avian Sciences, College Park, MD
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