Artificial intelligence in Andrological flow cytometry: The next step?

Since its introduction in animal andrology, flow cytometry (FC) has dramatically evolved. Nowadays, many compartments and functions of the spermatozoa can be analyzed in thousands of spermatozoa, including, but not limited to DNA, acrosome, membrane integrity, membrane symmetry, permeability, and polarity; mitochondrial mass and mitochondrial membrane potential, identification of reactive oxygen species, ion dynamics, and cellular signaling among many others. Improved machines, many more probes, and new software are greatly expanding the amount of information that can be obtained from each flow cytometry analysis.

In vitro, the aging of stallion spermatozoa at 22 °C is linked to alteration in Ca and redox homeostasis and may be slowed by regulating metabolism.

Background: Conservation of equine semen in the liquid state is a central procedure in horse breeding and constitutes the basis of associated reproductive technologies. The intense mitochondrial activity of the stallion spermatozoa increases oxidative stress along the storage period, leading to sperm demise within 24-48 h of storage, particularly when maintained at room temperature. Recently, the relationship between metabolism and oxidative stress has been revealed.

Bacterial endometritis-induced changes in the endometrial proteome in mares: Potential uterine biomarker for bacterial endometritis.

Equine endometritis is one of the main causes of subfertility in the mare. Unraveling the molecular mechanisms involved in this condition and pinpointing proteins with biomarker potential could be crucial in both diagnosing and treating this condition. This study aimed to identify the endometritis-induced changes in the endometrial proteome in mares and to elucidate potential biological processes in which these proteins may be involved.

Proteomics is advancing the understanding of stallion sperm biology.

The mammalian ejaculate is very well suited to proteomics studies. As such, research concerning sperm proteomics is offering a huge amount of new information on the biology of spermatozoa. Among domestic animals, horses represent a species of special interest, in which reproductive technologies and a sizeable market of genetic material have grown exponentially in the last decade.