The tails of spermatozoa are lined with channels in which there are pores for the entry of calcium. It is this mineral
A group of scientists from Yale University ledwith Jean-Ju Chang, Assistant Professor at the Department of Cellular and Molecular Physiology, discovered that one of the CatSper is critical in sperm victory and fertilization.
Chang's lab has developed a way to trackand determining the number of sperm in the reproductive tracts of female mice after mating. The researchers used 3D molecular imaging and artificial neural network modeling. They found that sperm that move from the uterus into the oviduct have Catsper1 channels. Other sperm have probably lost some of their functional ion channels. They become motionless and remain behind.
Sperm moving as far as possible alongthe female reproductive tract, have other features. They, as a rule, have already lost their cap-like structure - the acrosome - in the sperm head.
Author: Sperm-organelles-illustration.png: Studentreaderderivative work: Tigran Mitr am (talk) — Sperm-organelles-illustration.png, CC BY-SA 3.0
Understanding molecular signaturesleader spermatozoa and their interactions in the reproductive tract will help in the development of new methods of treating infertility or, conversely, contraceptives for men.
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