From Traditional Reproduction to Test Tube Baby

By: Eric Foley

Having few children, and if it is one, better, is becoming the norm of contemporary society. Thus, achieving a healthy, almost perfect baby has become a major concern. There is only one problem: "traditional" procreation, that is, from young breeding pairs, is becoming smaller every day.

Professional success - something natural and more than proven - is for the modern woman a need and a duty, so that motherhood is planned by couples after both - especially they - achieve a certain job win.

And it's OK. Only that there is another problem: in general, achieving professional success takes time: study first, and consecration to work later. And sometimes the baby "on the agenda" is expected for past 30 years of age.
It is stated that a long delay in motherhood can lead to reproductive problems, to which are added possible genetic problems in both females and males. But it is also confirmed that man is not satisfied only with his most elementary natural possibilities.

Science has been searching for answers for years and finding solutions to these possible threats. Every day there are more. The treatments abound. There are patented from anti-infertility therapies to in vitro fertilization itself.
One of the most recent procedures conceived is a new method of genetic screening. It was developed by a team from the Autonomous University of Barcelona. According to its authors, it will improve the possibility of conceiving healthy babies.

Another medical-scientific success in the area of reproduction was to successfully produce sperm from mice in a laboratory.
It's easy to say, but until now it was something that was thought impossible. Every effort in this regard had failed.

The finding was started by a Japanese research group. Open a window to help barren men. It could also be a tool to preserve the fertility of young people who should undergo cancer treatments, reports the British agency BBC.
According to the journalistic report, the investigations were carried out with individual cells, but the scientists of the University of the city of Yokohama were more audacious and took, instead of cells, small portions of testicular tissue from baby mice, then mixed them with a compound of nutrients in a test tube and -eureka! - discovered, after several weeks, that the tissue had produced viable sperm.

And it did not stop there: "To verify that the cells were healthy, they used them in in vitro fertilization treatments to produce 12 live mice that later managed to procreate their own descendants," adds Nature.

Moreover: "The scientists managed to recover healthy sperm from tissue that had been cultivated after being frozen for 25 days."

"Now we want to apply our method to other species, including humans," said Dr. Takehiko Ogawa, leader of the study; a urologist who suffered from not having "effective forms to treat patients who suffer infertility due to defective or insufficient sperm production".

However, the journal Nature published another article by two doctors from the Weill Cornell Medical College in New York, in which they point out that the research is "a crucial experimental advance in the thorny field of clinical use of sperm" grown in the laboratory, but it must be borne in mind that the fact that the mice born were fertile and managed to reproduce is not a refined indicator of the state of their health.

They believe that there could be "subtle genetic changes in sperm, which will be fundamental in the welfare of subsequent generations."
It is true. Not everything is said. But perhaps the Japanese have opened a solution to male infertility. Let's hope that the mouse does not just street and sleep.

The discovery began in 2007, when a gene closely related to the height of people was identified, but it was not until now that it could be unravelled with the study of DNA samples belonging to more than 180,000 people from different parts of the world.

Nearly 300 researchers from a hundred institutions participated and it was possible to identify up to 180 genetic variations -one more than those located up to now- responsible for the height a person can reach, according to another article in the journal Nature.

Height has a lot to do with genetics: it conditions it in about 80% of cases that "low fathers usually have low children and tall fathers tall children," said a research leader.

However, he adds, environmental factors such as diet also influence. Thus, although these 180 genetic variants or polymorphisms (minuscule variations in the nucleotides of the genome) may seem a significant number, they represent only 10% of the inherited variation relative to height, the study authors point out.

Scientists are convinced that the complexity in this issue is much greater and what is achieved in subsequent research will also find answers to some causes of certain diseases.

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