[The Ethics of Human Enhancement and Liberal Eugenics] The paper deals with the ethics of biotechnological enhancement of human qualities such as intelligence, health and lifespan. In contemporary bioethics three views have emerged concerning the moral permissibility of such a biotechnological enhancement of humans. While bioconservatives reject it as morally impermissible and dangerous, bioradicals welcome it as permissible and desirable. Between these two extremes we find bioliberals who admit some types of enhancement, under certain conditions. These debates are still overshadowed (...) by fear of eugenics, but this discredited term needs to be rehabilitated because it turns out that there are both desirable and undesirable forms of eugenics. (shrink)

Increasing awareness of the importance of the biodiversity of the whole global biosphere has led to further awareness that the problems which arise in connection with preservation and exploitation of our planet’s biodiversity are best tackled from a global perspective. The ‘Biodiversity Convention’ and the ‘Human Genome Project’ are some of the concrete attempts at such globalisation. But, while these efforts are certainly very good at the intentional level and on paper, there is, at the practical level of implementation, the (...) danger that globalisation may simply translate into westernisation, given the Western world’s dominance and will to dominate the rest of the globe. How is ‘global bioethics’ to be possible in a world inhabited by different cultural groups whose material situation, powers, ideas, experiences and attitudes differ rather markedly and who are not, in any case, equally represented in globalisation efforts and fora? One index of the pertinence of this question is that talk about biodiversity, biotechnology, biotrade etc. is being increasingly matched by talk about biopiracy, biorade, biocolonialism etc. In this paper, I attempt to explore and develop these very general concerns. (shrink)

In many cells, a nitric oxide (NO) synthase inducible by immunological stimuli produces a sustained flow of NO that lasts a long time. NO is a short‐lived molecule but it is a diffusibel ligand believed to be capable of reaching distal target sites. Further, several lines of evidence indicate that cysteine‐rich motifs of metal‐binding proteins, as well as redox‐sensitive metal clusters of metalloproteins, are natural sensors of bioradicals like NO. In metalloregulatory proteins, metals are often conveniently located at binding sites (...) and bound to cysteine residues. Accordingly, disruption of the metal‐thiolate polymetallic clusters should trigger significant remodelling of the protein structure involved in regulation. We can therefore postulate that the nitrosation reaction occurring at metal centres or cysteine‐rich motifs will preclude correct binding to regulatory sites. Several examples are given of metalloregulatory proteins whose metal is bound to thiols and may then become sensitive to NO. Recent observations indicate that in response to NO synthesis, iron regulatory protein, a eukaryotic bifunctional [Fe‐S] protein, switches from acting as aconitase to being an RNA‐binding regulator, and we suggest that the interplay between NO or a NO‐derived molecule and metal clusters at critical allosteric sites may be a crucial component of the cellular response to environmental stress. (shrink)