Semen liquefaction is a proteolytic process where a gel-like ejaculated semen becomes watery due to the enzymatic activity of prostate-derived serine proteases in the female reproductive tract. The liquefaction process is crucial for the sperm to gain their motility and successful transport to the fertilization site in Fallopian tubes or oviducts in animals. Hyperviscous semen or failure in liquefaction is one of the causes of male infertility. Therefore, the biochemical inhibition of serine proteases in the female reproductive tract after ejaculation is a prime target for novel contraceptive development.
6 ways to increase sperm count and improve male fertility
Down syndrome - Wikipedia
Down syndrome or Down's syndrome , also known as trisomy 21 , is a genetic disorder caused by the presence of all or part of a third copy of chromosome The parents of the affected individual are usually genetically normal. There is no cure for Down syndrome. Down syndrome is one of the most common chromosome abnormalities in humans.
Understanding the Role of Testosterone in Male Fertility
In the male reproductive tract, the epididymis is an essential organ for sperm maturation, in which sperm cells acquire mobility and the ability to fertilize oocytes while being stored in a protective microenvironment. Epididymal function involves a specialized luminal microenvironment established by the epithelial cells of epididymal mucosa. Low-calcium concentration is a unique feature of this epididymal luminal microenvironment, its relevance and regulation are, however, incompletely understood. In addition, bioinformatic analysis also suggests the involvement of a vitamin B6-axis in calcium-dependent MGP-mediated protein aggregation.
Sperm count refers to the amount of sperm per milliliter of semen. Measuring sperm count is usually part of a sperm analysis that also examines the shape of sperm and their motility. All these factors can play a role in a man's fertility. Millions of sperm are in one ejaculation, but only a few hundred will make it to the egg. Many sperm die in the acidic environment of the vagina before they migrate up to the uterus and into the fallopian tubes.