Genetics, eugenics and the medicalization of social behavior: lessons from the past

Impact of behavioral genetic evidence on the perceptions and dispositions of child abuse victims

BACKGROUND

Behavioral genetic research is beginning to elucidate some of the genetic contributions to human behaviors - including criminal and other problematic behaviors - and their interactions with environmental influences. One of the most studied of these interactions involves low-activity alleles of the monoamine oxidase A (MAOA) gene, which appear to increase the risk of antisocial behavior among males in the wake of childhood maltreatment. Some scholars have suggested that decisions about disposition of child abuse victims should be shaped by these findings, but the extent of public support for such approaches has not been assessed.

METHODS

In this study, a representative sample of the US population (n = 250) was presented with a vignette about a child, physically abused by his mother, who was tested for the presence of an allele that increases the risk of future impulsive violent behavior. Participants were asked about their views regarding the child's disposition, including return to his mother, and medical or psychological treatment.

RESULTS

Although participants thought that genetic data should be taken into account, the presence of an allele that increases the risk of impulsive violent behavior did not affect views regarding the child's return to his mother. However, it did increase respondents' willingness to provide the child with medical treatment and their view of the child as dangerous to other children.

CONCLUSIONS

The findings suggest that behavioral genetic evidence has effects on perceptions of dangerousness and tendencies to view problems as medical but that the public is cautious about the use of genetic findings in child abuse adjudications.

Genetic information in the age of genohype

We will analyse the representations and conceptualisation of genetics and genetic information in bioethical discourse. Genetics and genetic information is widely believed to be revolutionizing medicine and is sometimes misconceived as having a high predictive value compared to traditional diagnostics. We will attempt to present the inherent limitations of genetic information within its health care context. We will also argue against the exceptional treatment of genetic information that seems to govern bioethical reflection and regulatory approaches. And finally, we will make the claim that geneticization should be seen as a more serious threat to our privacy, autonomy and freedom, than genetic discrimination.

Nucleoside transporters: molecular biology and implications for therapeutic development

The uptake of nucleosides (or nucleobases) is essential for nucleic acid synthesis in many human cell types and in parasitic organisms that cannot synthesize nucleotides de novo. The transporters responsible are also the route of entry for many cytotoxic nucleoside analogues used in cancer and viral chemotherapy. Moreover, by regulating adenosine concentrations in the vicinity of its cell-surface receptors, nucleoside transporters profoundly affect neurotransmission, vascular tone and other processes. The recent molecular characterization of two families of human nucleoside transporters has provided new insights into the mechanisms of natural nucleoside and drug uptake and into future developments of improved therapies.