PMID- 34044335 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20210621 IS - 1879-3231 (Electronic) IS - 0093-691X (Linking) VI - 171 DP - 2021 Sep 1 TI - Effect of kisspeptin (KISS) and RFamide-related peptide-3 (RFRP-3) on the synthesis and secretion of FSH in vitro by pituitary cells in pigs. PG - 72-84 LID - S0093-691X(21)00170-9 [pii] LID - 10.1016/j.theriogenology.2021.05.010 [doi] AB - Kisspeptins (KISSs) and RFamide-related peptide-3 (RFRP-3) affect the synthesis and secretion of luteinizing hormone (LH) and modulate female reproductive processes. The presence of KISS and RFRP-3 in the porcine pituitary gland and their contribution to the regulation of follicle-stimulating hormone (FSH) synthesis and secretion is unknown. This study analyzed the presence of KISS and RFRP-3 in the pituitary of estrous-cyclic pigs on days 2 to 3, 10 to 11, 12 to 13, 15 to 16 and 19 to 20 and early pregnant pigs on days 10 to 11, 12 to 13 and 15 to 16, and evaluated the effect of KISS and RFRP-3 on beta-Fsh mRNA expression and FSH secretion in vitro by pituitary cells collected on selected days of the estrous cycle. The cells were cultured in vitro and treated with KISS (10(-6) M, 10(-7) M) and RFRP-3 (10(-6) M, 10(-7) M) or gonadotropin-releasing hormone (GnRH; 100 ng/mL) alone and in combinations (4 h or 24 h). The relative abundance of Kiss and Rfrp-3 and their receptor mRNA transcripts, as well as the KISS and RFRP-3 proteins, were found in the pituitaries of estrous-cyclic and early pregnant pigs. KISS after 4 h increased the secretion of FSH in estrous cyclic pigs mostly during the early-luteal phase and luteolysis. RFRP-3 inhibited the synthesis and secretion of FSH in estrous-cyclic pigs on days 19 to 20 and the secretion of FSH on days 2 to 3 and 10 to 12 of the estrous cycle compared with GnRH-treated cells. KISS in co-treatment with GnRH after 24 h enhanced FSH release on days 2 to 3 and 15 to 16 of the estrous cycle. In conclusion, KISS and RFRP-3 systems are present in the pituitary of estrous-cyclic and pregnant pigs. In estrous-cyclic pigs, KISS and RFRP-3 may affect the synthesis and secretion of FSH by pituitary cells. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Zmijewska, Agata AU - Zmijewska A AD - Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowski 1A, 10-719, Olsztyn, Poland. Electronic address: agata.zmijewska@uwm.edu.pl. FAU - Czelejewska, Wioleta AU - Czelejewska W AD - Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowski 1A, 10-719, Olsztyn, Poland. FAU - Drzewiecka, Ewa M AU - Drzewiecka EM AD - Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowski 1A, 10-719, Olsztyn, Poland. FAU - Franczak, Anita AU - Franczak A AD - Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowski 1A, 10-719, Olsztyn, Poland. LA - eng PT - Journal Article DEP - 20210513 PL - United States TA - Theriogenology JT - Theriogenology JID - 0421510 RN - 0 (Kisspeptins) RN - 0 (Neuropeptides) RN - 0 (RFamide peptide) RN - 33515-09-2 (Gonadotropin-Releasing Hormone) RN - 9002-68-0 (Follicle Stimulating Hormone) SB - IM MH - Animals MH - Female MH - *Follicle Stimulating Hormone MH - Gonadotropin-Releasing Hormone/metabolism MH - Kisspeptins/genetics MH - *Neuropeptides/genetics MH - Pituitary Gland/metabolism MH - Swine OTO - NOTNLM OT - FSH OT - Kisspeptin OT - Pig OT - Pituitary OT - RFRP-3 COIS- Declaration of competing interest None. EDAT- 2021/05/28 06:00 MHDA- 2021/06/22 06:00 CRDT- 2021/05/27 20:36 PHST- 2020/09/07 00:00 [received] PHST- 2021/04/17 00:00 [revised] PHST- 2021/05/10 00:00 [accepted] PHST- 2021/05/28 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2021/05/27 20:36 [entrez] AID - S0093-691X(21)00170-9 [pii] AID - 10.1016/j.theriogenology.2021.05.010 [doi] PST - ppublish SO - Theriogenology. 2021 Sep 1;171:72-84. doi: 10.1016/j.theriogenology.2021.05.010. Epub 2021 May 13.