Effects of cell storage and passage on basal and oxytocin-regulated prostaglandin secretion by equine endometrial epithelial and stromal cells.

The study focuses on creating methodologies for the isolation, culture, and preservation of equine endometrial epithelial and stromal cells. It also investigates the impact of preservation and passage on endometrial cell physiology, specifically on their basal and oxytocin-stimulated prostaglandin release.

Objectives of the Study

• The research has two main goals: To develop methods for isolation, cultivation, and storage of equine endometrial epithelial and stromal cells.
• Furthermore, it seeks to ascertain the effect of cryopreservation (a process where cells or whole tissues are preserved by cooling to sub-zero temperatures) and passage (the transfer of cells from one dish to another) on endometrial cell physiology. This is examined based on their basal and stimulated release of prostaglandin when exposed to oxytocin.

Methodology

• Epithelial and stromal cells were gathered by enzymatically digesting the equine endometrium taken between the second to fifth days of the estrous cycle.
• Primary epithelial and stromal cells, as well as cells that were cryopreserved (frozen for preservation), were stimulated with oxytocin for 24 hours.
• The levels of two types of prostaglandins (PGE(2) and PGF(2α)) in the culture medium were then measured using an enzyme-linked immunosorbent assay.

Findings

• The research found that oxytocin increased the release of both types of prostaglandins by primary cultures of unfrozen epithelial cells until passage I (meaning the first transfer of cells) and primary cultures of unfrozen and cryopreserved/thawed stromal cells until passage IV (or the fourth transfer).
• Thus, cryopreserved/thawed stromal cells that have been passed up to four times and unfrozen epithelial cells from passage I display physiological properties similar to those observed in primary culture.
• These cells may therefore be successfully used for in vitro studies (experiments conducted in a controlled environment, such as a petri dish) of prostaglandin secretion.

This research could contribute to an enhanced understanding of how various factors influence specific cell types and how in vivo physiological processes (those occurring within a living organism) operate. It may be especially beneficial in veterinary science and reproductive biology practices.