Ten years since the discovery of iPS cells. The current state of their clinical application

  Rev Clin Esp. 2017 Jan – Feb;217(1):30-34. doi: 10.1016/j.rce.2016.08.003. Epub 2016 Oct 5. Justo Aznar Ph.D. MD Julio Tudela Pharm Ph.D. Institute of Life Science – Bioethics Observatory Catholic University of Valencia – Spain iPS cells current clinical...

CRISPR used in viable human embryos and germline genetic modification. An ethical approach

From an ethical point of view, the use and destruction of human embryos, members of our species and worthy of full dignity is completely unacceptable and, it should be noted,  these experiments involve genetic modification of the germline, the safety of which is still far from...

Intestinal tissue produced from embryonic stem cells and iPS cells

The intestinal nervous system controls several functions of the gastrointestinal tract, and when impaired causes bowel abnormalities. Now, a group of American researchers has generated intestinal tissue from embryonic and iPS cells (this last hasn’t ethics problems), using...

Is the human embryo a living being of our species?

Few doubts that determining whether the preimplantation human embryo is a living being of our species is one of, if not the most, fundamental issues in modern bioethics. Another thing is whether that living biological being is, or is not, a human person. That, however, is another...

Changes occur in the maternal brain that enhance communication with the unborn child

Changes occur in the brain of pregnant women as a result of the new hormone levels and biological adaptation to them. According to an article published in Nature Neuroscience (see HERE), which essentially translates into a reduction in the volume of grey matter. This appears to...

Public funds authorised for production of human-animal chimeras

In September 2005, the dedication of public financial aid by the National Health Institutes for experiments on transferring human stem cells to animal embryos to produce chimeras was banned. However, on 4 August this year, this ban was lifted for certain experiments, and it was...

Mitochondrial replacement. New findings on mitochondrial DNA call into question further advances

This study shows that the mtDNA variant in the individual has a great effect on its interaction with the nuclear DNA. This finding is contrary to what was thought of the effect of mitochondrial replacement. On 6th July this year, investigators at the National Centre for...

Human life biological beginning

Fertilisation is the dynamic and temporal process by which an individual is formed from materials supplied by its parents. Fertilisation is a process with epigenetic temporal dynamics: the genetic information inherited is fed back by the process itself (by an interaction of the...

Freezing embryos and FIV: an ethical approach

Added ethical difficulty, the damage inflicted on the embryo, which will be subjected to various freezing/thawing processes, resulting in many of them having to be discarded in the proces…. Introduction In its July 2014 edition, the journal Fertility and Sterility published...

Studies of sex-determination systems prove that distinction betwwen male and female is deeply rooted in the human brain

Recent studies of sex-determination systems and sex chromosomes has already increase our knowledge of human sexualitySex-determination systems occupie a central place in the human conception of the living world. In fact, the sexual distinction between male and female is deeply...