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...

Human embryo. His moral status according to Michael Sandel

THE STATUS OF THE HUMAN EMBRYO ACCORDING TO MICHAEL SANDEL Justo Aznar*, Vicente Bellver**, Gloria Casanova and Mª José Torres   Abstract: Michael Sandel is one of the most socially committed North American philosophers. In this paper, we analyse his thoughts in relation to...
Posted On 18 Oct 2016
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Human embryos manipulation for possible biomedical uses is permitted. Ethical assessment

It is often said that in scientific research, anything that can be done, will be done, regardless of its ethical connotations. This is what seems to have occurred in the light of an article published on 4th May this year in Nature (doi:10.1038/nature17948), entitled...

Foetal development. Did you know that the relationship with his mother during pregnacy conditions its subsequent emotional responses

A recent study in the International Journal of Behavioral Development has found that the type of relationship that a child has with its mother during her pregnancy (foetal development), and with its family during the first year of life, conditions its emotional responses during...

Can human iPS cells replace the use of human embryonic stem cells?

A hotly debated topic within the specialised scientific world is whether or not human iPS cells are similar to human embryonic cells, which raise too so many ethical issues. It is a mistake to believe that this, in principle, is a problem with exclusively technical implications,...

Maternal foetal dialogue. Cross to the mother via the placenta and affect her physiological functions

 This physiological mechanism is only just beginning to be understood In a previous article, we referred to the maternal foetal dialogue in the genomic area (See HERE). It is now known (BioEssays 37; 1106-1118,2015) that foetal cells, which can cross to the mother via the...

Genetic selection of embryos: a technique that is clearly eugenic

Just 35 years ago, the world witnessed the birth of Louise Brown, the first test-tube baby. At the beginning of this month, just a few days before the anniversary of this event, a team at the University of Oxford announced at the European Society of Human Reproduction and...
Posted On 17 Jan 2016
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