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Technology part 1: the Internet--opportunities & threats.

This is the first article in a three-part series about technology and its impact on healthcare systems and the business of health care. This article explores the use and implications of Internet and Web-based technologies for physicians, managed care organizations healthcare providers. The second article will present clinical and pharmaceutical technologies. The third article will profile systems that are successfully exploiting all of these technologies.

Community Participation↗

The legal protection of test subjects in clinical trials of medicinal products for human use in the European Union.

On the international as well as on the level of the European Union a legal framework has been developed on the protection of test subjects has been developed. In 2000, the Declaration of Helsinki, issued by the World Medical Association, was revised and the previous distinction between therapeutic and non-therapeutic trial situations has been eliminated. Non-therapeutic trials that only aim at the progress of scientific knowledge and do not benefit the patient are now admissible. This is not to the benefit of the position of the test subject and most certainly not when the test subject should be given special protection. The question arises what this recent revision means for the group of incompetent adult patients in clinical trials on medicinal products (hereinafter called drugs) in the European Union (EU). This group needs special protection. Also relevant are national and international legal frameworks and the protection offered by informed consent procedures and screening by ethics committees and member states' competent authorities.

Adult↗

Clinical trials in children: problems and pitfalls.

Recent initiatives by the US Congress and the Food and Drug Administration have provided effective incentives to develop new drugs for children leading to a dramatic increase in the number of paediatric clinical trials being done in the US. There also is increased international interest in development of pharmaceuticals for children as reflected in the draft International Conference on Harmonisation guidelines. The demands created by these initiatives are challenging the industry, regulators, and clinical investigator community. As the infrastructure for paediatric clinical research evolves, it is paramount that the ethical issues unique to children are not forgotten and that children do not become a commodity in the clinical trial economy. Furthermore, it is important to recognise that the adult paradigm for clinical research cannot simply be imposed on paediatric studies and that protocols must be appropriately designed for different age groups. Clinical studies can be, are being, and will continue to be successfully carried out in children on behalf of children so that ultimately children can benefit from therapeutic advances to the same extent enjoyed by their parents and grandparents.

Adolescent↗

The hollow fibre model--facilitating anti-cancer pre-clinical pharmacodynamics and improving animal welfare.

We describe a modified hollow fibre assay (HFA) for investigating the potential of novel molecules as pharmaceutical agents. In particular the assay provides drug/target interaction data that can facilitate the selection of lead compounds for further evaluation in more sophisticated solid tumour models, whilst successfully implementing the 3Rs - the 'replacement' 'refinement' and 'reduction' of animals. This more ethical and rapid approach to early drug development does not compromise on the validity, sensitivity, predictivity or efficacy of preclinical evaluation. We present novel data using the standard cross-linker mitomycin C (MMC) as a positive control, and two investigational DNA interactive molecules (C1311/ SJG-136). Tumour cells were seeded in fibres and implanted into mice. Following treatment with an intraperitoneal injection, fibres were excised and cells retrieved for pharmacodynamic analysis using the comet assay/fluorescence microscopy. Microscopy results revealed nuclear uptake and localisation within cytoplasmic organelles of HT29 colorectal adenocarcinoma cells following treatment with C1311 (150 mg/kg). Following treatment with SJG-136 (0.3 mg/kg) a 27.3% (p<0.001) DNA cross-linking (s.c.) effect was observed in the HL60 acute promyelocytic leukaemia cell line. DNA cross-linking effects of 55% (i.p) and 50% (s.c.) (p<0.005) were observed in the A549 lung carcinoma cell line following administration of MMC (6 mg/kg). These data are consistent with previous activity defined using solid tumour models, and support the use of the HFA for in vivo pharmacodynamic investigation whilst significantly reducing animal numbers and the influence of tumour growth on the welfare of mice.

Aminoacridines↗

A cautionary tale.

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Biomedical Research↗

A Dutch report on the ethics of neonatal care: a commentary.

The moral arguments and the decision-making processes arising from them in the context of the dilemmas that arise in considering the appropriateness and implementation of withholding or withdrawing treatment in certain neonates form the basis of this commentary. It is concluded that the differing opinions on management of these babies by individual paediatricians results from their differing moral outlooks rather than from any incoherence in the moral arguments set out in the Dutch report.

Decision Making↗