PMID- 28963736 OWN - NLM STAT- MEDLINE DCOM- 20180824 LR - 20181202 IS - 1439-0531 (Electronic) IS - 0936-6768 (Linking) VI - 52 IP - 6 DP - 2017 Dec TI - Expression of GnRH receptor in the canine corpus luteum, and luteal function following deslorelin acetate-induced puberty delay. PG - 1104-1112 LID - 10.1111/rda.13038 [doi] AB - The goals of this study were as follows: (Experiment 1) to examine the basic capability of canine corpora lutea (CL) to respond to GnRH by assessing expression of gonadotropin-releasing hormone receptor (GnRH-R) in luteal samples collected throughout the luteal lifespan from non-pregnant dogs, and (Experiment 2) to investigate the effects of pre-pubertal application of the GnRH agonist deslorelin acetate on luteal function following the first oestrus. Mature CL were collected during the mid-luteal phase (days 30-45) from treated and control bitches. Transcript levels of several factors were determined: estrogen receptors (ESR1/ERalpha, ESR2/ERbeta), progesterone (P4)-receptor (PGR), prolactin receptor (PRLR), PGE2-synthase (PTGES) and PGE2 receptors (PTGER2/EP2, PTGER4/EP4), vascular endothelial growth factor (VEGFA) and VEGF receptors (VEGFR1 and VEGFR2), cyclooxygenase 2 (COX2/PTGS2), steroidogenic acute regulatory protein (STAR) and 3beta-hydroxysteroid dehydrogenase (3betaHSD). Additionally, levels of Kisspeptin 1 (Kiss1) and its receptor (KISS1-R) were evaluated. Although generally low, GnRH-R expression was time dependent and was elevated during early dioestrus, with a significant decrease towards luteal regression. In deslorelin-treated and control dogs, its expression was either low or frequently below the detection limit. EP2 and VEGFR1 were higher in the treated group, which could be caused by a feedback mechanism after long-term suppression of reproductive activity. Despite large individual variations, 3betaHSD was higher in the deslorelin-treated group. This, along with unchanged STAR expression, was apparently not mirrored in increased luteal functionality, because similar P4 levels were detected in both groups. Finally, the deslorelin-mediated long-term delay of puberty does not have negative carry-over effects on subsequent ovarian functionality in bitches. CI - (c) 2017 Blackwell Verlag GmbH. FAU - Kaya, D AU - Kaya D AD - Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, University of Kafkas, Kars, Turkey. FAU - Gram, A AU - Gram A AUID- ORCID: 0000-0002-7490-5836 AD - Vetsuisse Faculty, Institute of Veterinary Anatomy, University of Zurich, Zurich, Switzerland. FAU - Kowalewski, M P AU - Kowalewski MP AD - Vetsuisse Faculty, Institute of Veterinary Anatomy, University of Zurich, Zurich, Switzerland. FAU - Schafer-Somi, S AU - Schafer-Somi S AD - Platform for Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, Vienna, Austria. FAU - Kuru, M AU - Kuru M AD - Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, University of Kafkas, Kars, Turkey. FAU - Boos, A AU - Boos A AD - Vetsuisse Faculty, Institute of Veterinary Anatomy, University of Zurich, Zurich, Switzerland. FAU - Aslan, S AU - Aslan S AD - Department of Obstetrics and Gynecology, Veterinary Faculty, Near East University, Nicosia, North Cyprus, Turkey. LA - eng SI - GENBANK/KJ512885 SI - GENBANK/AB028142 SI - GENBANK/AY739720.1 SI - GENBANK/NM_001003074 SI - GENBANK/EF522840 SI - GENBANK/HQ110882 SI - GENBANK/NM_001122854 SI - GENBANK/NM001003175 SI - GENBANK/AF262963 SI - GENBANK/DQ269018 SI - GENBANK/NM001048024 SI - GENBANK/AF075602 SI - GENBANK/AF177934 SI - GENBANK/XM533454 SI - GENBANK/XM861041 SI - GENBANK/HQ267784 PT - Journal Article DEP - 20170930 PL - Germany TA - Reprod Domest Anim JT - Reproduction in domestic animals = Zuchthygiene JID - 9015668 RN - 0 (Kisspeptins) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, LHRH) RN - 0 (Receptors, Steroid) RN - 08AN7WA2G0 (Triptorelin Pamoate) RN - TKG3I66TVE (deslorelin) SB - IM MH - Animals MH - Corpus Luteum/*drug effects/growth & development MH - Dogs MH - Female MH - Kisspeptins/analysis MH - Receptors, Cell Surface MH - Receptors, LHRH/*antagonists & inhibitors/*physiology MH - Receptors, Steroid MH - Sexual Maturation/drug effects MH - Triptorelin Pamoate/*analogs & derivatives/pharmacology OTO - NOTNLM OT - GnRH receptor OT - deslorelin OT - domestic dog (Canis familiaris) OT - luteal function OT - puberty delay EDAT- 2017/10/01 06:00 MHDA- 2018/08/25 06:00 CRDT- 2017/10/01 06:00 PHST- 2017/03/10 00:00 [received] PHST- 2017/06/24 00:00 [accepted] PHST- 2017/10/01 06:00 [pubmed] PHST- 2018/08/25 06:00 [medline] PHST- 2017/10/01 06:00 [entrez] AID - 10.1111/rda.13038 [doi] PST - ppublish SO - Reprod Domest Anim. 2017 Dec;52(6):1104-1112. doi: 10.1111/rda.13038. Epub 2017 Sep 30.