Three-dimensional models of human embryos generated using human stem cells

The development of anterior-posterior symmetry of the human embryo occurs during pregnancy. Many of the signals that regulate this process have been described in experiments using mice. However, there is no direct molecular evidence of how anterior-posterior symmetry is achieved...

A possible clinical therapy to treat extremely preterm babies has successfully experimented in ovine fetuses

Prenatal medicine in extremely preterm infants raises important medical and ethical dilemmas. Among the former, possibly the most important is to support their survival with new therapeutic measures. In this sense we sateted in recent articles that “The new possibilities for...

Role of the fetal immune system in preterm labor. Upends conventional thinking about immune development

A very interesting article published in EurekAlert! discusses this highly relevant issue. “Preterm labor, a common pregnancy complication, has long been a mystery to scientists. But a new study from UC San Francisco shows it may sometimes happen when the fetal immune syst...

International discussion has been proposed about ethical use of embryoids

An article published in Nature, signed by notable personalities in the area of bioethics, discusses the ethical implications of embryoids (organoids) or embryo models, in vitro cell aggregates that model various regions of the embryo to allow their study. These studies are framed...

Russian scientist is waiting for the approval of the government to produce babies with a modified genome

Denis Rebrikov, a Russian molecular biologist, has made public his intention to modify the genome of human embryos and then implant them in women to produce genetically modified babies as soon as he can obtain the necessary permits, according to the journal Nature (see HERE)....

With the aim to find a new sources of organs for transplantation, Japan approves the first human-animal embryo experiments. Positive and negative apects

Scientist Hiromitsu Nakauchi is the first researcher in Japan to receive permission from the government to create animal embryos that contain human cells human-animal chimeras and transplant them into surrogate animals for gestation, as explained in an article in the journal...

A short review of negative and positive effects of Trump’s restrictions on fetal tissue research

As we published recently (read HERE), the American Administration has placed restrictions on research using fetal tissue, giving rise to a fierce debate among researchers. In this respect, Judd Deere, deputy White House press secretary told Science that enacting the new poli...

Another molecular revolution. The atlas of human embryonic development

We publish the full text of the article published in the Civica magazine last January (Spanish version HERE) that we consider of great bioethical interest. By now, at this advanced stage of biology in which we find ourselves, no one should doubt that each human individual, each...

Alabama governor signs surgical and chemical abortion ban into law. It reignited abortion debate

Alabama Gov. Kay Ivey signed the state’s controversial near-total abortion ban Wednesday evening. The new law is the most restrictive anti-abortion measure passed in the United States since Roe v. Wade was decided in 1973.The legislation — House Bill 314, “Human Life...

More facts of the human fertilization process

During the fertilization process, a series of interactions take place between the sperm and the oocyte (egg), with the starting point of the process being the adhesion of the sperm to the membrane of the egg and the subsequent fusion of both cells, a process that involves...