Skip to main content

Researchers found a way to differentiate male and female sperm cells easily.

Researchers found a way to differentiate male and female sperm cells easily.

Materials that slow the movement of X sperm

In most mammals, half of the offsprings are females, and the other half are males. 

For humans, this ratio maintained, and women are about 49.5 of the human population. 

The egg always contains an X chromosome while the sperm can contain an X and lead to a female, or a Y leading to a male. 

The likelihood of each type of sperm cell is almost equal.

So far, IVF processes have been entirely randomized in neonatal sex. 

There was no way to separate the X and Y sperm in a way that would leave them intact and capable of fertilizing the egg. 

Now researchers at Hiroshima University in Japan have found a way to separate the X and Y sperm of mice without damaging the cells themselves.

In mice, the X chromosome contains over 3,000 genes, compared to less than 700 in the Y chromosome. 

As a result, the X sperm contains only proteins unique to them. 

The researchers knew that under certain conditions, differences in the movement of the X sperm and Y sperms created in the fluid.

For example, in an acidic or high-temperature environment, Y sperm move less than X sperm.

The researchers hypothesized that this difference was due to the different proteins that work in each type of sperm.

Something in these differences would make it possible to differentiate between male sperm and female cells. 

Previously, it was discovered that male and female sperm cells display different receptors on their surface. 

The researchers chose to focus on two of the receptors - TLR7 and TLR8 - that are present on X sperm but do not exist on Y spermatozoa.

Researchers incubated the sperm cells with substances called Razquimod and Imiquimod that bind to the receptors and examined their ability to move in a fluid. 

The research found that there was a slowdown in the X sperm movement but not that of Y. 

When they collected only the sperm cells that moved faster and fertilized mice, 90 percent of the born offspring were male. 

When only the slow-moving sperm cells were collected, 81 percent of the offspring were females. 

That is, the separation resulting from the addition of the receptor-linked substance has allowed direct and significant effect on the birth chances of males or females.

The separation method used by the researchers is straightforward and inexpensive. 

One can imagine a world where we could very likely choose the sex of the newborn even before fertilization. 

First, examine in depth the substances that bind to receptors do affect the function of the sperm cells (other than the change in velocity) and embryos that develop.

The possibility of choosing newborn sex raises complex moral questions, which we do not discuss here. 

Male chicks, for example, do nothing to the egg industry, and about seven billion of them are killed each year around the world. 

Determining newborn sex will prevent this widespread demise and allow for more moral agriculture. 

Researchers say they have already been able to separate the X and Y sperm of cattle and pigs.


Popular posts from this blog

Researchers Identified a Virus that Attacks Cancer Cells

Researchers identified a virus that attacks human cancer cells can distinguishes Healthy cells.
Audio Version Of This Post
Viruses are usually supposed to worry us, but this is not the case with inoculate viruses. those that infect cancer cells and kill them, ignoring healthy cells. So it is no wonder that the search for such viruses attracts many researchers.

The Seneca Valley virus.This virus also known as Senecavirus affects pigs and cows. In recent years it has been found that the virus attacks human cancer cells.

The ability to identify tumors and ignore normal cells tested in two trials. The first in relapsed solid tumors in children and the second in lung carcinoma.

Experiments also found that the immune system was removing the virus from the body. Thus preventing it from completing its anticancer action.
Ongoing research to understand how the Seneca Valley virus may be used for cancer treatments.Researchers at the University of Otago in New Zealand discovered in 2017. That the vi…

New study suggests, people with better sense of smell have a better sense of direction

People with a good sense of smell also have a better sense of direction, suggesting a link between the two systems, a new study suggestsWhy do we have a sense of smell?
The smell of fruit directs us (or at least the lemurs) to the most mature fruit, and even our interpersonal relationships are affected by scents. But some researchers believe that its first use by the first animals, the advantage it gave them over the lack of sense of smell, is navigation. 

Now researchers from Canada have shown that people with a better understanding of smell also navigate better.

The olfactory bulb, the region of the brain that receives information about odors from the nose and makes the initial processing of the smell, exists in many species of animals. It has identified in mammals, birds, reptiles, and fish, and there is a similar structure, even in crabs and insects. 

For some, the bulb is tiny compared to the size of the brain, and for others, it is enormous. A study published several years ago showe…

10 Incredible Scientific Breakthroughs and New Inventions

Scientific discoveries continue to appear every year. new discoveries in a variety of fields, from innovative solutions and treatments for common and deadly diseases to archaeological discoveries, space discoveries, and unusual scandals, learn about 10 groundbreaking scientific discoveries that have taken place and can certainly affect our lives in the near future.

1. Sickle cell anemia can be cured by transplantation of stem cellsSickle cell anemia is a severe and common blood disease in which more than 4 million people worldwide are infected.

In April, a pair of scientists at the National Human Genome Research Institute announced that they had completely cured a 26-year-old man with sickle cell anemia, Through the transplantation of healthy stem cells in the body, they hope and believe that similar results will also occur in the future as more patients receive similar treatment with stem cells.
2. Scientists have been able to stop and reverse the process of aging in miceAging is a natu…