Early pregnancy loss occurs in 6-10% of equine pregnancies making it the main cause of reproductive wastage. Despite this, reasons for the losses are known in only 16% of cases. Lack of viable conceptus material has inhibited investigations of many potential genetic and pathological causes. We present a method for isolating and culturing placental cells from failed early equine pregnancies. Trophoblast cells from 18/30 (60%) failed equine pregnancies of gestational ages 14-65 days were successfully cultured in three different media, with the greatest growth achieved for cells cultured in AmnioChrome™ Plus. Genomic DNA of a suitable quality for molecular assays was also isolated from 29/30 of these cases. This method will enable future investigations determining pathologies causing EPL.
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http://dx.doi.org/10.1016/j.placenta.2015.12.014 | DOI Listing |
J Equine Vet Sci
January 2025
Equine Fertility Group, Faculty of Veterinary Medicine, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Alfara del Patriarca, Valencia, Spain; Broline International AB, 51293 Svenljunga, Sweden. Electronic address:
The objective of this study was to compare the fertility of diestrous mares with a follicle ≥ 30 mm in diameter treated with prostaglandin F2α (PGF) (PGF group) or left untreated for 7 days (SP group). Standardbred mares (n = 46) were assigned randomly to the SP (n = 23) and PGF groups (n = 23) when they were identified with a corpus luteum (CL) of unknown age and a follicle ≥ 30 mm in diameter (Day 0). The most frequent outcome in the PGF group was estrus and ovulation of the dominant follicle (74 %), while the outcomes of the SP mares 7 days after Day 0 were more variable: estrus and follicle regression (30 %), diestrous ovulation (22 %) and diestrus along with follicle regression (26 %) of the dominant follicles.
View Article and Find Full Text PDFJ Equine Vet Sci
January 2025
New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, 382 West Street Road, Kennett Square. PA 19348, USA.
Biol Reprod
January 2025
Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853.
Embryo implantation in the mare occurs just over one month after fertilization, coinciding with the production of chorionic gonadotropin. The factors that regulate this late implantation in the mare, and whether they are unique to horses or shared with more invasive embryo implantation in other species, remain poorly understood. This study aimed to determine and compare the transcriptome and subpopulations of endometrial cells before and after embryo implantation in the horse.
View Article and Find Full Text PDFTheriogenology
December 2024
Clinic for Horses - Unit for Reproductive Medicine, University of Veterinary Medicine, Hannover, Foundation, Buenteweg 15, 30559 Hanover, Germany; ReproTraining, Rolandstrasse 62, 33415 Verl, Germany. Electronic address:
Theriogenology
December 2024
University of Utrecht, Department of Clinical Sciences, Netherlands.
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