RESUMO

OBJECTIVE: This paper looked into the findings of a survey on the ethical and emotional aspects encircling the fate of surplus embryos in Assisted Human Reproduction (AHR). METHODS: Five staff members of a fertility clinic in the Brazilian State of São Paulo answered a semi-structured qualitative interview. RESULTS: The answers alluded to the different meanings assigned to embryos by medical staff (genetic material) and couples undergoing fertility treatment (potential child). The meaning couples assigned to their embryos, along with inherent uncertainty and distress, affected the choice of what would be done to surplus embryos. CONCLUSION: Psychological support may be helpful to two key groups present in assisted human reproduction: clinic staff, for support in their interactions with couples; and couples in need of support and awareness on surplus embryo donation.

Assuntos

Assuntos

RESUMO

The use of donated gametes and embryos in assisted reproduction techniques (ART) makes it necessary to examine interests that involve relevant ethical and legal considerations, which include the autonomy and privacy rights of the intended parents, donors' right to privacy and the right of the minors to know their genetic origin. This article presents arguments to consider policies of more openness to obtain information from donors in order to protect the child's best interest in knowing his/her genetic origins. It concludes with the situation in Mexico, where ART has been carried out with donated gametes since several years ago; however, due to the absence of regulations to control these procedures, each establishment imposes its own criteria for the operation of its programs.

El uso de gametos y embriones donados en técnicas de reproducción humana asistida hace necesario examinar intereses que implican consideraciones éticas y jurídicas relevantes, y estos incluyen los derechos de autonomía y privacidad de los padres de intención, el derecho a la privacidad de los donantes y el derecho de los menores a conocer su origen genético. En este artículo se exponen argumentos para considerar políticas de mayor apertura para la obtención de información de los donantes en aras de proteger el interés superior del niño y la niña a conocer sus orígenes genéticos. Concluye con la problemática en México, donde desde hace varios años se realizan técnicas de reproducción humana asistida con gametos donados, sin embargo, debido a la ausencia de una normatividad que regule estos procedimientos, cada establecimiento impone sus criterios para el funcionamiento de sus programas.

Assuntos

RESUMO

Argentina, like many other countries in the region, faces the dilemma of what to do with the increasing accumulation of frozen embryos, which are often abandoned. This report aims to address the issue of abandoned frozen embryos, following the main concerns: 1) when is an embryo considered abandoned, according to regulatory documents; 2) how can the number of cryopreserved abandoned embryos be decreased; and 3) what are the current available options for discarding these abandoned embryos. Issues concerning the fate of abandoned embryos call for a revision of the technical aspects, as well as the symbolic aspects associated with the embryos and their options for discarding. Embryo disposal is a complex and intimate decision, which depends not only, on the quality of the cryopreserved embryo, but also on the social, cultural, economic, labor and health insurance aspects. In the absence of a formal regulatory framework for such decisions in Argentina, current practices and standard procedures face significant developmental hurdles. Among future actions to be developed in the short, medium and long term by this committee are building interdisciplinary teams, fostering patient-awareness, devising guidelines, and enforcing policies regarding embryo abandonment.

Assuntos

Assuntos

RESUMO

As part of Assisted Reproductive Technologies (ART), the advent of embryo freezing lowered the number of embryos transferred, decreasing multiple births without jeopardizing pregnancy rates. Using vitrification technology, 90% of embryos survive after thawing, producing clinical pregnancy rates similar to those of fresh embryos (41.6%y 44.3% respectively). Furthermore, cumulative pregnancy rates, obtained after transferring fresh plus frozen/thawed embryos, can reach 70%. Frozen embryo transfers (FET) are reported by six of seven institutions, which are part of the Chilean ART registry, and altogether constitute 22.8% of all ART procedures. Increasing use of cryopreservation lowered overall multiple gestations from 33% in 1995 to 23% in 2011, reducing pre term births and perinatal mortality. For many people, embryo freezing generates ethical dilemmas, due to the potential risks to which embryos are exposed, and the uncontrolled accumulation and disposal of human embryos. Scientific evidence today shows that frozen/thawed embryos are not exposed to disproportionate risks, and by hindering its use, both women and their children are exposed to the risks of multiple gestation, repeated cycles of ovarian hormonal stimulation or the impossibility to afford repeated ART cycles. In this article, we provide biomedical, as well as ethical, arguments to sustain that embryo cryopreservation is not only justified but fundamental when offering infertility treatment with ART.

Assuntos

RESUMO

Stem cells have drawn extraordinary attention from scientists and the general public due to their potential to generate effective therapies for incurable diseases. At the same time, the production of embryonic stem cells involves a serious ethical issue concerning the destruction of human embryos. Although adult stem cells and induced pluripotential cells do not pose this ethical objection, there are other bioethical challenges common to all types of stem cells related particularly to the clinical use of stem cells. Their clinical use should be based on clinical trials, and in special situations, medical innovation, both of which have particular ethical dimensions. The media has raised unfounded expectations in patients and the public about the real clinical benefits of stem cells. At the same time, the number of unregulated clinics is increasing around the world, making direct offers through Internet of unproven stem cell therapies that attract desperate patients that have not found solutions in standard medicine. This is what is called stem cells tourism. This article reviews this situation, its consequences and the need for international cooperation to establish effective regulations to prevent the exploitation of patients and to endanger the prestige of legitimate stem cell research.

Assuntos

Assuntos

RESUMO

The HFEA (Human Fertilisations & Embryology Authority) recently accepted to perform research in hybrid embryos generated by transferring human somatic cell nucleus to cow enucleated oocytes, named cytoplasmatic hybrids. The aim is to obtain a source of embryonic stem cells without the use of human oocytes. The arguments for the approval are to avoid the risk of obtaining human oocytes and that these embryos will not be transferred to a female's womb for its development. Those who oppose the technique argue that it is a manipulation of the beginning of life and a disrespect to the dignity of human life because of the destruction of embryos. Nevertheless, the real nature of this new entity has not been established. Biologically it is an embryo with 99% of human genome and animal's cytoplasm, not generated from human gametes, it is not a new genome and it will be used only to cultivate stem cells. It does not seem possible to define its nature beyond any doubts. If it were considered as a human embryo it should be respected and protected as every human being. Once more, scientific progress opens new ethical and legal questions that we cannot answer in a definitive way. Researchers are exploring new roads to obtain pluripotential stem cells which should favor the development of innovative therapies. The main objection is the unavoidable destruction of human embryos, although in this case its origin and nature are not clear.

Assuntos

RESUMO

BACKGROUND: There are no empirical studies which have explored the experimentation with human embryos in Latin America. In general, there are no frameworks that regulate neither lawful matters of assisted reproduction nor the possibility of experimentation with human embryos, and the ethical frames are limited to those adopted by each center. Currently, to think about the real possibilities of experimentation with embryos goes beyond a legal frame, since the opinion of the potential actors is not known either (gamete or embryo donors). The experimentation with embryos is practically a reality in developed nations and Latin America continues appearing almost only as a potential market for the scientific advance. OBJECTIVE: To determine the anxiety types of the couples treated with assisted fertilization before hypothetical donation of embryos for investigation, by a mixed quantitative and qualitative methodology. PATIENTS AND METHODS: An oral semistructured interview was made individually to ten participants (seven women and three men) who had gone like patients of the Assisted Fertilization Program of the Gynecology and Obstetrics Service of the Clinical Hospital of the University of Chile. The scale of anxiety of the analysis of the verbal conduct method of Gottschalk and collaborators was applied to them. RESULTS: The most frequently associated types of anxiety to the hypothetical situation of donation of embryos for scientific research were the fault, separation, and mutilation anxiety. CONCLUSIONS: It is recommended to develop educative programs regarding the culture of embryo donation for treatment of couples with fertility problems, as well as for investigation, and to develop educative programs about the meaning of relationship and of embryo status.

Assuntos

RESUMO

This work intends to provide a wide scope of the legal situation in Brazil referred to Human Embryos and how it has been developed through the 20th century. Across the last century, the human being got the possibility of making genetic experiments with human embryos. Our main goal is to assume the future responsibility of these actions through a juridical and ethical point of view.

Assuntos