Publications by authors named "P F Daels"

The proper function of the placenta is essential for the health and growth of the fetus and the mother. The placenta relies on dynamic gene expression for its correct and timely development and function. Although numerous studies have identified genes vital for placental functions, equine placental molecular research has primarily focused on single placental locations, in sharp contrast with the broader approach in human studies.

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The equine uterus is highly interrogated during estrus prior to breeding and establishing pregnancy. Many studies in mares have been performed during estrus under the influence of high estrogen concentrations, including the equine estrual microbiome. To date, it is unknown how the uterine microbiome of the mare is influenced by cyclicity; while, the equine vaginal microbiome is stable throughout the estrous cycle.

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Nocardioform placentitis is a poorly understood disease of equine late gestation. The presence of nocardioform, filamentous branching gram-positive bacteria, has been linked to the disease, with Crossiella equi, Amycolatopsis spp., and Streptomyces spp.

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Article Synopsis
  • The study explores how the equine embryo affects the uterine environment during the early stages of pregnancy, specifically from days 9-15 post-ovulation.
  • Researchers compared gene expression in the endometrium of pregnant mares with and without an embryo and found significant differences in the expression of over 1,100 genes.
  • Results indicate that the presence of a mobile embryo enhances local gene activity related to growth factors and immune regulation, suggesting that embryo-maternal interaction is vital for successful pregnancy establishment.
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Bacterial endometritis is among the most common causes of subfertility in mares. It has a major economic impact on the equine breeding industry. The sensitivity of detecting uterine microbes using culture-based methods, irrespective of the sample collection method, double-guarded endometrial swab, endometrial biopsy, or uterine low-volume lavage (LVL), is low.

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