Ion Transport in Sperm Signaling

Sperm Transport in the Mare Reproductive Tract: A Review

The objective of this study was to review the literature on sperm transport in the mare. During this process the sperm cells must reach the oviducts in order to fertilize the oocyte, but before reaching this site it must go through the uterus that is a hostile environment at this moment since there is an inflammatory reaction in this location that aims to eliminate excess spermatozoa and bacter...

Sodium pumps: ouabain, ion transport, and signaling in hypertension.

TO THE EDITOR: A recent Editorial Focus in this journal (7) addresses the newly recognized role of the sodium pump as both an ion transport protein and a hormone receptor with its own signaling cascade. The relative importance of the cardiotonic steroids (CTS) as endogenous signaling hormones versus their ability to inhibit the sodium pump is of great interest. Indeed, the article noted that “a...

Ion channels in sperm physiology.

Fertilization is a matter of life or death. In animals of sexual reproduction, the appropriate communication between mature and competent male and female gametes determines the generation of a new individual. Ion channels are key elements in the dialogue between sperm, its environment, and the egg. Components from the outer layer of the egg induce ion permeability changes in sperm that regulate...

Cell signaling and ion transport across the fish gill epithelium.

A large array of circulating and local signaling agents modulate transport of ions across the gill epithelium of fishes by either affecting transport directly or by altering the size and distribution of transporting cells in the epithelium. In some cases, these transport effects are in addition to cardiovascular effects of the same agents, which may affect the perfusion pathways in the gill vas...

Ion Transport in Acidophiles