T557. MOLECULAR CLONING AND CHARACTERIZATION OF OVINE PROSTAGLANDIN TRANSPORTER: EXPRESSION AND REGULATION IN UTERUS DURING ESTABLISHMENT OF PREGNANCY. Sontineni, Vinod¹, Banu, Sakhila¹, Spencer, Thomas¹, Bazer, Fuller¹, Arosh, Joe¹, ¹ Texas A&M University, College Station, TX

W558. IDENTIFICATION OF PREGNANCY-ASSOCIATED GLYCOPROTEINS (PAGs) EXPRESSED BY THE PREIMPLANTATION CONCEPTUS OF DOMESTIC RUMINANTS. Garbayo, Juana ¹, Serrano, Beatriz¹, Aguilar, Begonia¹, Lopez-Gatius, Fernando², ¹ Centro de Investigacion y Tecnologia Agroalimentaria (CITA), Zaragoza, Spain² University of Lleida, Lleida, Spain

M559. EFFECTS OF ARECOLINE TO THE PERI-IMPLANTATION MOUSE EMBRYOS IN VITRO. Liu, Shao-Tung¹, Young, Gau-Chyi², ¹ National Kaohsiung University, Kaohsiung, Taiwan, R.O.C.² Kaohsiung Medical University, Kaohsiung, Taiwan, R. O. C.

T560. APOPTOSIS IS INDUCED BY TRANSFORMING GROWTH FACTOR- 1, -2 AND -3 ISOFORMS IN RAT DECIDUAL CELLS THROUGH Smad2 PHOSPHORYLATION AND INHIBITION OF Akt ACTIVITY. Caron, Pierre-Luc¹, Fréchette-Frigon, Guylaine¹, Asselin, Eric¹, ¹ Universite du Quebec a Trois-Rivieres, Trois-Rivieres, Quebec, Canada

W561. QUANTITATIVE INHIBITION OF PROSTAGLANDIN-F2 ALPHA SYNTHESIS: BASIS FOR A BIOASSAY TO MEASURE BOVINE INTERFERON-TAU ACTIVITY. Binelli, Mario¹, Marques, Vanessa², Bertan, Claudia¹, Miguez, Patricia¹, Miglino, Maria ², Meirelles, Flavio¹, ¹ University of Sao Paulo, Pirassunuga, Brazil² University of Sao Paulo, Sao Paulo, Brazil

M562. PROSTAGLANDIN TRANSPORTER (PGT) EXPRESSION AND REGULATION IN MOUSE UTERUS DURING EARLY PREGNANCY. Gao, Fei¹, Lei, Wei¹, Diao, Hong-Lu¹, Luan, Li-Ming¹, Hu, Shi-Jun¹, Yang, Zeng-Ming¹, ¹ Northeast Agricultural University, Harbin, China

T563. CHANGES OF NITRIC OXIDE SYNTHASES EXPRESSION IN RAT UTERUS CORRELATED WITH ESTROUS [CYCLE] AND PREGNANCY. Nishimura, Kyohei¹, Gamo, Toru¹, Soh, Tomoki¹, Yamauchi, Nobuhiko¹, Hattori, Masa-aki¹, ¹ Graduate School Kyushu University, Fukuoka, Japan

W564. ESTROGEN REGULATION OF NOS ISOFORMS IN THE MOUSE PERIIMPLANTATION UTERUS. Kwok, Willson¹, Steuerwald, Nury^{1, 2}, Huet-Hudson, Yvette ¹, ¹ UNC Charlotte, Charlotte, NC² ART Institute of New York & New Jersey, West Orange, NJ

M565. EFFECTS OF POTASSIUM CHANNEL MODULATION ON MYOGENIC TONE OF MESENTERIC ARTERIES OF PREGNANT RATS. St-Louis, Jean^{1, 2}, Sicotte, Benoit¹, Brochu, Michele^{1, 2}, ¹ Research Center, CHU-Ste-Justine, Montreal, QC, Canada² University of Montreal, Montreal, QC, Canada

T566. METABOLISM OF ESTRADIOL-17 AND ESTRONE BY THE EQUINE EMBRYO PROPER AND THE ALLANTOIS IN EARLY PREGNANCY. Raeside, James¹, Christie, Heather¹, Renaud, Rick¹, Waelchli, Rudolf¹, Betteridge, Keith¹, ¹ University of Guelph, Guelph, ON, Canada

W567. CENTRAL ADMINISTRATION OF THE PROLACTIN RECEPTOR ANTAGONIST, S-179D PRL, DISRUPTS PARTURITION IN RATS: POSSIBLE ENDOCRINE INVOLVEMENT. Nephew, Benjamin¹, Amico, Janet², Cai, H. M.², Walker, Ameae³, Scanlan, Victoria¹, Bridges, Robert¹, ¹ Tufts University School of Veterinary Medicine, N. Grafton, MA² University of Pittsburgh School of Medicine, Pittsburgh, PA³ University of California Riverside, Riverside, CA

M568. EXPRESSION OF Akt ISOFORMS AND THEIR INVOLVEMENT IN RAT DECIDUAL CELL SURVIVAL. Frechette-Frigon, Guylaine¹, Caron, Pierre-Luc¹, Asselin, Eric¹, ¹ Universite du Quebec a Trois-Rivieres, Trois-Rivieres, Quebec, Canada

T569. DETECTION OF INTERFERON- (IFN) BY ELISA IN OVINE PLASMA AND ITS RELATION TO PREGNANCY. Lindemann, Cristina¹, Ewen, Morag¹, Alink, Frances¹, McEvoy, Tom¹, Rooke, John¹, ¹ Scottish Agricultural College, Aberdeen, Scotland

W570. DIFFERENTIAL EXPRESSION AND REGULATION OF 14-3-3 GAMMA IN MOUSE UTERUS DURING PERI-IMPLANTATION PERIOD. Luan, Li-Ming¹, Lei, Wei¹, Ma, Xing-Hong¹, Chen, Ying¹, Hu, Shi-Jun¹, Gao, Fei¹, Yan, Yun-Qin¹, Yang, Zeng-Ming¹, ¹ Northeast Agricultural University, Harbin, China

M571. VITAMIN E IS ESSENTIAL FOR MURINE PLACENTATION BUT NOT FOR EMBRYONIC DEVELOPMENT ITSELF. Suzuki, Hiroshi¹, Tachibe, Takanori ², Ito, Tsuneo ², Shibata, Norihito ³, Suzuki, Shigeo ², Mori, Toshio ², Hani, Toshio ², Arai, Hiroyuki³, Jishage, Kou-ichi ², ¹ Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan² Chugai Research Institute for Medical Science, Inc., Gotemba, Shizuoka, Japan³ University of Tokyo, Bunkyo-ku, Tokyo, Japan

T572. EXPRESSION OF CALCYCLIN-BINDING PROTEIN (CacyBP) IN THE MOUSE UTERUS DURING ESTROUS CYCLE AND EARLY PREGNANCY AND ITS UPREGULATION BY THE STEROID HORMONES. Duan, Enkui¹, Yang, Yongjun¹, Liu, Weimin¹, Zhou, Jiaxi¹, Cao, Yujing¹, Li, Jing¹, Peng, Sha¹, Yuan, Jianggang², ¹ State Key Laboratory of Reproductive Biology, Chinese Academy of Sciences, Beijing, P.R. China² Chinese Academy of Medical Sciences, Beijing, P.R. China

W573. AP-2 TRANSCRIPTION FACTOR DURING BOVINE EMBRYO DEVELOPMENT AND PLACENTA FORMATION. Aston, Kenneth¹, Johnson, Heidi¹, White, Kenneth¹, Winger, Quinton¹, ¹ Utah State University, Logan, UT

M574. EXPRESSION AND ANTIPROLIFERATIVE PROPERTIES OF RECOMBINANT OVINE UTERINE SERPIN. Tekin, Saban^{1, 2}, Padua, Maria¹, Brad, Amber¹, Hansen, Peter¹, ¹ University of Florida, Gainesville, Florida² University of Gaziosmanpasa, Tokat, Turkey

T575. INTERLEUKIN-11 ROLE IN PLACENTATION INVOLVES STIMULATION OF THE TRANSCRIPTIONAL ACTIVITY OF ₂-MACROGLOBULIN GENE THROUGH STAT3 IN THE DECIDUA. Bao, Lei ¹, Ferguson-Gottschall, Susan¹, Gibori , Geula¹, ¹ University of Illinois, Chicago, IL

W576. FUNCTIONAL CHARACTERIZATION OF PROSTAGLANDIN TRANSPORTER DURING DECIDUALIZATION OF HUMAN ENDOMETRIAL STROMAL CELLS. Fortier, Michel^{1, 2}, Kang, Jihong¹, Chapdelaine, Pierre¹, ¹ Laval University Hospital Center, Quebec, Qc, Canada² Laval University, Quebec, Qc, Canada

M577. EFFECTS OF NITRIC OXIDE AND ENDOTHELIN-1 ON CARUNCULAR ENDOMETRIAL SECRETION OF PGE2 AND PGF2. Weems, Charles ¹, Weems, Yoshie¹, Uchima, Tracie¹, Lennon, Esther¹, Raney, Aaron ¹, Goto, Kylee¹, Ong, Allison¹, Zaleski, Halina¹, Tatman, Sean ², Neuendorff, Don², Randel, Ron², ¹ University of Hawaii, Honolulu, Hawaii² Texas A&M University, Overton, Texas

T578. EXPRESSION OF INDUCIBLE NITRIC OXIDE SYNTHASE IN REPEATED BIOPSIES OF THE BOVINE CERVIX DURING LATE GESTATION AND PARTURITION. Breeveld-Dwarkasing, Vidya¹, Aalberts, Marian¹, Van Dissel-Emiliani, Federica¹, Van Tol, Helena¹, Taverne, Marcel¹, ¹ Utrecht University, Utrecht, The Netherlands

W579. FETAL PROGRAMMING: ADVANCED PLACENTOME DIFFERENTIATION IN TESTOSTERONE-TREATED SHEEP IS FACILITATED BY ANDROGENIC ACTIONS OF TESTOSTERONE. Astapova, Olga¹, Steckler, Teresa¹, Lee, Theresa¹, Jackson, Leslie¹, Padmanabhan, Vasantha¹, ¹ University of Michigan, Ann Arbor, MI

M580. EFFECT OF DECREASED CONCENTRATIONS OF PROGESTERONE DURING PLACENTATION ON RETENTION OF PREGNANCY IN CATTLE. Starbuck, Melanie¹, Poole, Daniel¹, Inskeep, Keith¹, ¹ West Virginia University, Morgantown, WV

T581. LOW BLOOD ISG15 mRNA AND PROGESTERONE LEVELS ARE PREDICTIVE OF NON-PREGNANT DAIRY COWS. Austin, Kathleen¹, Han, Hyungchul¹, Rempel, Lea ¹, Hansen, Thomas¹, ¹ University of Wyoming, Laramie, WY

W582. REGULATION OF MATRIX METALLOPROTEINASE-2 AND -9 IN THE INVASIVE EXTRAVILLOUS TROPHOBLAST CELL LINE BY PROTEASOME SUBUNIT LMP2 VIA NF-B PATHWAY. Zhu, Cheng¹, Wang, Hongxing¹, Wang, Hongmei¹, Lin, Haiyan¹, Yang, Qing¹, Zhang, Heng¹, ¹ State Key Laboratory of Reproductive Biology, Chinese Academy of Sciences, Beijing, P.R. China

M583. REGULATION OF MATRIX METALLOPROTEINASES AND THEIR INHIBITORS BY RELAXIN IN HUMAN CERVICAL CELLS. Lobb, Derek¹, ¹ McMaster University, Hamilton, ON, Canada

T584. PROGESTERONE REVERSES GLUCOCORTICOID INHIBITION OF PLACENTAL VASODILATORY PROSTANOIDS. Siler-Khodr, Theresa¹, Forman, Julie¹, Kang, Inn-Soo¹, ¹ University of Texas Health Science Center at San Antonio, San Antonio, Texas

W585. CANINE HEPARANASE: cDNA SEQUENCE, EXPRESSION AND LOCALIZATION IN THE CANINE PLACENTA. Kizaki, Keiichiro^{1, 2}, Shida, Katsuhiko¹, Okada, Muneyoshi¹, Yoshioka, Kazuki¹, Tsujio, Masashi¹, Hashizume, Kazuyoshi², Mutoh, Ken-ichiro¹, Hara, Yukio¹, ¹ Kitasato University, Towada, Japan² Iwate University, Morioka, Japan

M586. THE INDUCTION OF OSTEOPONTIN IN OVINE ENDOMETRIAL STROMAL CELLS REQUIRES CONCEPTUS ATTACHMENT. Burghardt, Robert¹, White, Frankie¹, Greggs, Schylr¹, Spencer, Thomas ¹, Johnson, Greg ¹, ¹ Texas A&M University, College Station, TX

T587. THE EXPRESSION PATTERN OF GENES RELATED WITH IMPLANTATION DURING THE PRE-AND POSTIMPLANTATION IN MOUSE UTERI. Ueta Yanagimoto, Yoshiko¹, Lee, Dong-Soo¹, Suzuki, Hiroshi^{1, 2}, ¹ Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan² The University of Tokyo, Tokyo, Japan

W588. PROGESTERONE REGULATION OF GALECTIN-15 AND EARLY CONCEPTUS GROWTH IN THE OVINE UTERUS. Satterfield, Carey¹, Bazer, Fuller¹, Spencer, Thomas¹, ¹ Texas A&M University, College Station, Texas

M589. STEROIDOGENIC ENZYME EXPRESSION IN VASCULAR TISSUE OF MARINE MAMMALS MAY CONTRIBUTE TO FETAL PROFUSION. Browne, Patience ¹, Conley, Alan¹, ¹ University of California Davis, Davis, CA

T590. LEUKEMIA INHIBITORY FACTOR IN CANINE OVARY AND UTERUS DURING THE ESTROUS CYCLE. Yue, Zhan-Peng¹, Zhang, Xue-Ming¹, Liu, Ju-Xiong¹, Deng, Xu-Ming¹, Han, Xue-Min¹, Guo, Bin¹, ¹ Jilin University, Changchun, Jilin, P. R. China

W591. EXTRACELLULAR MATRIX METALLOPROTEINASE INDUCER (EMMPRIN) UPREGULATES MMP PRODUCTION BY MOUSE UTERINE STROMAL CELLS. Chen, Li ¹, Belton Jr., Robert Belton¹, Lin, Li-Jung ¹, Nowak, Romana¹, ¹ University of Illinois, Urbana, IL

M592. THE MINK TROPHOBLAST EXPRESSES PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR DURING THE INITIAL STEPS OF EMBRYO IMPLANTATION AND CYTOTROPHOBLAST DIFFERENTIATION. Desmarais, Joelle¹, Lopes, Flavia¹, Zhang, Hao², Das, Sanjoy², Murphy., Bruce¹, ¹ Université de Montréal, St-Hyacinthe, QC, Canada² Vanderbilt University, Nashville, TN, USA.

T593. INVOLVEMENT OF STATHMIN IN HUMAN ENDOMETRIAL STROMAL CELL DECIDUALIZATION. Yoshie, Mikihiro¹, Tamura, Kazuhiro¹, Hara, Takahiko², Kogo, Hiroshi¹, ¹ Tokyo University of Pharmacy & Life Science, Tokyo, Japan² The Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan

W594. ACUTE RELAXANT EFFECTS OF ESTROGEN IN RAT UTERINE VESSELS ARE NOT MEDIATED BY ESTROGEN RECEPTORS. Scott, Pierre-Andre^{1, 2}, Tremblay, Andre^{1, 2}, Brochu, Michele^{1, 2}, St-Louis, Jean^{1, 2}, ¹ Research Center, CHU Ste-Justine, Montreal, QC, Canada² University of Montreal, Montreal, QC, Canada

M595. STRUCTURAL AND MOLECULAR ALTERATIONS INDUCED IN THE ENDOMETRIUM PRIOR TO EMBRYO INVASION IN BONNET MONKEYS. Sachdeva, Geetanjali¹, Rosario, Gracy ¹, D'Souza, Serena¹, Modi, Deepak¹, Manjramkar, Dhananjay¹, Hinduja, Indira², Katkam, Rajendra¹, Puri, Chander¹, ¹ National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India² INKUS clinic, Mumbai, Maharashtra, India

T596. INCREASE SODIUM INTAKE DURING GESTATION IN RATS AFFECTS VASCULAR NA/K-ATPASE ACTIVITY. Provencher, Mylene^{1, 2}, Li, Chun Yan^{1, 2}, Brochu, Michele^{1, 2}, St-Louis, Jean^{1, 2}, ¹ Research Center, CHU Ste-Justine, Montreal, QC, Canada² University of Montreal, Montreal, QC, Canada

W597. EPIGENETIC CONTROL OF UTERINE TISSUE MORPHOGENESIS. Kashiwagi, Aki¹, Pru, James¹, ¹ Massachusetts General Hospital/Harvard Medical School, Boston, MA

M598. GENES EXPRESSION PROFILES IN BOVINE ENDOMETRIUM AND EARLY EMBRYOS DURING IMPLANTATION BY A CUSTOM DESIGNED MICROARRAY. Hashizume, Kazuyoshi¹, Ushizawa, Koichi², Kizaki, Keiichiro¹, Ishiwata, Hiroko², Kaneyama, Kanako³, Imai, Kei³, Takahashi, Toru², ¹ Iwate University, Morioka, Japan² National Institute of Agrobiological Sciences, Tsukuba, Japan³ National Livestock Breeding Center, Nishigo, Japan

T599. CHARACTERIZATION OF RAT ENDOMETRIAL STROMAL CELLS CULTURED IN VITRO. Gamo, Toru ¹, Nishimura, Kyouhei ¹, Soh, Tomoki ¹, Yamauchi , Nobuhiko ¹, Hattori, Masa-aki ¹, ¹ Graduate School Kyushu University, Fukuoka, Japan

W600. POSSIBLE INTERACTION BETWEEN UTERINE SENSITIZATION ASSOCIATED GENE 1 (USAG-1) AND BONE MORPHOGENETIC PROTEINS (BMPs) IN RECEPTIVE RAT ENDOMETRIUM. Gillio-Meina, Carolina¹, Kennedy, Thomas¹, ¹ University of Western Ontario, London, ON, Canada

M601. EFFECTS OF GONADOTROPINS ON MOUSE IMPLANTATION AND DECIDUALIZATION. Diao, Hong-Lu¹, Tan, Hui-Ning¹, Rengaraj, Deivendran¹, Yang, Zeng-Ming¹, ¹ Northeast Agricultural University, Harbin, China

T602. CHARACTERIZATION OF ENDOTHELIN RESPONSES IN ACUATE UTERINE ARTERIES OF THE PREGNANT RAT. Guerin, Pascale^{1, 2}, Sicotte, Benoit¹, St-Louis, Jean^{1, 2}, ¹ Research Center, CHU Ste-Justine, Montreal, PQ, Canada² Universite de Montreal, Montreal, PQ, Canada

W603. EFFECTS OF THE ISOPROSTANE E₂ AND U-46619 ON HUMAN PLACENTAL ARTERIES: INFLUENCES OF PRETERM DELIVERY, CAESAREAN AND PREECLAMPSIA. Monast, Ofelie^{1, 2}, St-Louis, Jean^{1, 2}, ¹ Research Centre, CHU Ste-Justine, Montreal, QC, Canada² University of Montreal, Montreal, QC, Canada