Research paper embryonic stem cell research
Embryonic stem cell research articles
The policy had several other consequences. Finally, did U. The date of August 9, , was set as the cutoff point to distance the federal government from any privately funded future use of embryos for hES cell research. Competing interests: The authors have declared that no competing interests exist. In addition to those research accomplishments, the cloning of Dolly the sheep in using a technique called somatic cell nuclear transfer or, more simply, nuclear transfer NT , illustrated another means by which to generate and isolate hES cells. There are important biological differences between embryonic and adult stem cells. Against the restrictive viewpoint that research on hES cells may only take place if there is proof that adult stem cells are not optimally useful, there is the more permissive viewpoint that hES cell research may, and indeed should, take place so long it is unclear whether adult stem cells are complete or even partial alternatives. Considerable opposition to the moral acceptability of IVF was expressed by some and contributed to paralysis regarding reconstitution of the EAB Congregation, Relevant questions here are: is this a realistic scenario in the human or just science fiction , would it be unacceptable, and is it unavoidable? The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Difference of opinion exists, however, also among women, about the disproportionality of hormone treatment. Those in favor of embryonic stem cell research deem such a loss acceptable for the future benefits that this research could have on thousands of lives. Cord blood contains precursors of a number of lineages but its pluripotency, or even multipotency, is far from proven. In most cases to date, these have been spare IVF embryos, although IVF embryos have been specifically created for the purpose of stem cell isolation Lanzendorf et al. Stem cells, in general, hold great promise for the future of medicine.
The advantage of using NT to derive hES cells is that the nuclear genomes of the resulting hES cells would be identical with those of the donors of the somatic cells.
Here, however, an analogy can be made with recruiting healthy research subjects.
However, some are concerned that creating chimeras would violate social conventions built around the notion of species Robert and Baylis, Some states have banned some or all forms of this research see Chapter 4but other states are actively promoting hES cell research.
No funding was to be granted for "the use of stem cell lines derived from newly destroyed embryos, the creation of any human embryos for research purposes, or cloning of human embryos for any purposes" Embryonic stem cells, with their pluripotent potential and self-renewing quality, hold great value for scientific researchers in search of cures for untreatable diseases, progress in regenerative medicine, or a better understanding of early human development.
Although the promise of such research is as yet unrealized, most researchers believe that it will be a critical source of both important knowledge and clinical resources.
A growing number of countries have far more permissive policies regarding such research than the United States has Walters, ; see also Chapter 4. Ruiz-Canela M 1.
Stem cell therapy articles
Maybe even some opponents of creating embryos for the improvement of ART can conditionally accept therapeutic cloning because of the important health interests of patients. An example of the logical version is that acceptance of hES cells for the development of stem cell therapy for the treatment of serious disease automatically means there is no argument against acceptance of use, for example, for cosmetic rejuvenation Nuffield Council on Bioethics, Some of the concerns about hES cell research arise from lack of familiarity with the scientific issues. Congress, OTA, , and a later House hearing focused on its absence. The comparison sought to identify whether and how hESC science changed after the U. Advanced Search Abstract The use of human embryos for research on embryonic stem ES cells is currently high on the ethical and political agenda in many countries. These types of stem cells are referred to as adult stem cells or somatic stem cells because they are gathered from patients after birth Devolder 5. Furthermore, the roughly 22 lines now available were grown on mouse-feeder cell layers. However, there is near universal agreement that the use of NT to produce a child should not now be permitted.
Such a procedure was recently described by a group of Korean scientists Hwang et al. Because these stem cells are obtained at a point when the inner cell mass is concentrated in the embryo, they are more easily obtained than adult stem cells, which are limited in quantity.
If hES cell research and therapy are to be thoroughly investigated, cell lines that are more genetically diverse and free of animal contaminants must be available. Those trials were abandoned in late arguing financial reasons.
Berkeley: University of California Press,
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