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The FDA and drug safety: a proposal for sweeping changes.

The current Food and Drug Administration (FDA) system of regulating drug safety has serious limitations and is in need of changes. The major problems include the following: the design of initial preapproval studies lets uncommon, serious adverse events go undetected; massive underreporting of adverse events to the FDA postmarketing surveillance system reduces the ability to quantify risk accurately; manufacturers do not fulfill the majority of their postmarketing safety study commitments; the FDA lacks authority to pursue sponsors who violate regulations and ignore postmarketing safety study commitments; the public increasingly perceives the FDA as having become too close to the regulated pharmaceutical industry; the FDA's safety oversight structure is suboptimal; and the FDA's expertise and resources in drug safety and public health are limited. To address these problems, we urge Congress, which is ultimately responsible for the FDA's performance, to implement the following 5 recommendations: (1) give the FDA more direct legal authority to pursue violations, (2) authorize the adoption of a conditional drug approval policy, at least for selected drugs, (3) provide additional financial resources to support the safety operations, (4) mandate a reorganization of the agency with emphasis on strengthening the evaluation and proactive monitoring of drug safety, and (5) require broader representation of safety experts on the FDA's advisory committees.

Drug Approval↗

Regulating private health insurance to serve the public interest: policy issues for developing countries.

Private health insurance plays a large and increasing role around the world. This paper reviews international experiences and shows that private health insurance is significant in countries with widely different income levels and health system structures. It contrasts trends in private health insurance expansion across regions and highlights countries with particularly important experiences of private coverage. It then discusses the regulatory approaches and policies that can structure private health insurance markets in ways that mobilize resources for health care, promote financial risk protection, protect consumers and reduce inequities. The paper argues that policy makers need to confront the role that private health insurance will play in their health systems and regulate the sector appropriately so that it serves public goals of universal coverage and equity.

Developing Countries↗

The structural organization of the human skeletal muscle ryanodine receptor (RYR1) gene.

The RYR1 gene encoding the Ca2+ release channel of human skeletal muscle sarcoplasmic reticulum has been cloned and exon/intron boundaries have been determined, together with a minimum of 30 bp of intron sequence flanking each splice junction. The gene contains 106 exons, of which two are alternatively spliced. The length of the gene, determined by the alignment of 16 genomic phage clones, a cosmid clone, and several long polymerase chain reaction products, is approximately 160 kb. Exons range from 15 to 813 bp, while introns range from 85 to about 16,000 bp. Analysis of the gene has confirmed published errors in the human RYR1 cDNA and confirmed the structure of two alternatively spliced exons. The numbering of the nucleotides comprising the RYR1 cDNA and the numbering of amino acids encoded by them were corrected to account for these earlier errors and omissions. Analysis of 2.4 kb of the 5' upstream sequence indicated the presence of a CCAAT box and several Sp1 binding sites between nucleotides -200 and -60 bp, flanking the proposed transcription start site at -130 bp. Several other potential transcription factor binding sites were identified throughout the 5' sequence. Knowledge of the structure of the RYR1 gene will provide an invaluable resource for the discovery of mutations in the gene that are causal of human malignant hyperthermia and central core disease.

Amino Acid Sequence↗

The genomic organization of the Fanconi anemia group A (FAA) gene.

Fanconi anemia (FA) is a genetically heterogenous disease involving at least five genes on the basis of complementation analysis (FAA to FAE). The FAA gene has been recently isolated by two independent approaches, positional and functional cloning. In the present study we describe the genomic structure of the FAA gene. The gene contains 43 exons spanning approximately 80 kb as determined by the alignment of four cosmids and the fine localization of the first and the last exons in restriction fragments of these clones. Exons range from 34 to 188 bp. All but three of the splice sites were consistent with the ag-gt rule. We also describe three alternative splicing events in cDNA clones that result in the loss of exon 37, a 23-bp deletion at the 5' end of exon 41, and a GCAG insertion at the 3' portion also in exon 41. Sequence analysis of the 5' region upstream of the putative transcription start site showed no obvious TATA and CAAT boxes, but did show a GC-rich region, typical of housekeeping genes. Knowledge of the structure of the FAA gene will provide an invaluable resource for the discovery of mutations in the gene that accounts for about 60-66% of FA patients.

Alternative Splicing↗

[Relevance of sentinel surveillance systems for the implementation and evaluation of vaccination strategies].

In sentinel surveillance a prearranged sample of reporting sources-often healthcare providers-agrees to report all cases of defined conditions. The German "Protection Against Infection Act" (IfSG) provides a mandate to the Robert Koch-Institute (RKI) to establish sentinel surveillance of not notifiable diseases relevant to public health. Sentinel systems with RKI involvement include two networks of private practitioners reporting cases of influenza and measles (within the Working Groups on Influenza and Measles, respectively). In addition a laboratory-based sentinel system reports cases of certain bacterial infections in children. Results from these systems serve as a basis for framing vaccination recommendations and goals as well as for the evaluation, adjustment and promotion of vaccination strategies. The data indicate time trends (e. g. number of cases by season, age and region) and supply specific information (e. g. for determination of risk factors, distribution of pathogens). Methodological problems of sentinel surveys (e. g. selection of appropriate samples, population-based estimates) can be accounted for with appropriate methods of analysis. More effective implementation of sentinel surveillance in Germany could be achieved through better coordination of existing structures. This would make more effective use of limited resources and better enable timely and flexible investigation of conceptual and organisational questions.

Adult↗

Environmental Protection in the Tomsk Region of the Russian Federation: A Case Study.

/ Implementation of environmental management in Russia is undergoing rapid changes. Federal responsibility rests with the Russian Federation State Committee for Environmental Protection (RFSCEP) and is delegated at regional level to local State Committees for Environmental Protection (SCEPs). This paper focuses on the functioning of the SCEP for Tomsk oblast' (region) in Siberia, which is strongly committed to forging constructive links with regional government, academia, industry, and environmental NGOs. Considerable difficulties exist for SCEPs in Russia, however, and prominent among these are (1) a rigidly vertical civil service structure, with separate organs having responsibility for different natural resources, persisting from Soviet times, which hinders effective intergrated and holistic environmental management; and (2) a lack of open access to environmental information from military and quasi-military sites.

Journal Article↗

Differentiation of infection from vaccination in foot-and-mouth disease by the detection of antibodies to the non-structural proteins 3D, 3AB and 3ABC in ELISA using antigens expressed in baculovirus.

The baculovirus expression system was found to be efficient at expressing the 3D, the 3AB and the 3ABC non-structural proteins (NSP) of foot-and-mouth disease virus (FMDV) as antigens recognised by immune sera in ELISA. ELISA's using 3D, 3AB and 3ABC detected antibodies from day 8 and 10 after experimental infection of susceptible cattle and sheep and cattle remained seropositive for more than 395 days. The ELISA's detected antibodies against any of the seven serotypes of FMDV. The 3D ELISA was specific and precise and as sensitive as established ELISA's which measure antibody to structural proteins. The assay may be used as a resource saving alternative to established ELISA's for the detection of antibodies against any of the seven serotypes. The 3AB and the 3ABC ELISA were also specific and precise. FMDV infected cattle could be differentiated from those that had been merely vaccinated as they gave a positive result in both the 3AB and the 3ABC ELISA's. Two cattle that had been both vaccinated and infected also gave positive results in both tests, suggesting that the 3AB and 3ABC ELISA's, but not the 3D ELISA might represent a reliable means of detecting infection in a vaccinated population.

Animals↗

The use of the waiting list in a fair selection of patients for nursing home care.

When health care resources are scarce, waiting lists may be used as a distribution measure in order to enhance the fair allocation of resources through selection of patients. In this study, the structure and use of a waiting list for a fair selection of patients for nursing home admission was studied. Qualitative research took place in two regions in the Netherlands, where scarcity exists in nursing home care. Selection meetings were attended and 39 health care workers were interviewed. Not only did waiting list criteria like urgency and chronology determine the final selection decision, but also efficiency and quality of care considerations (patients' preferences for particular nursing homes and nursing homes' considerations of matching the unit and work load). These considerations, their relative importance, and the resulting need for enforcement of the decision-making procedures, should be part of the discussion of patient selection. This acknowledges the complexity of the selection of patients.

Health Care Rationing↗

The adaptive dynamics of function-valued traits.

This study extends the framework of adaptive dynamics to function-valued traits. Such adaptive traits naturally arise in a great variety of settings: variable or heterogeneous environments, age-structured populations, phenotypic plasticity, patterns of growth and form, resource gradients, and in many other areas of evolutionary ecology. Adaptive dynamics theory allows analysing the long-term evolution of such traits under the density-dependent and frequency-dependent selection pressures resulting from feedback between evolving populations and their ecological environment. Starting from individual-based considerations, we derive equations describing the expected dynamics of a function-valued trait in asexually reproducing populations under mutation-limited evolution, thus generalizing the canonical equation of adaptive dynamics to function-valued traits. We explain in detail how to account for various kinds of evolutionary constraints on the adaptive dynamics of function-valued traits. To illustrate the utility of our approach, we present applications to two specific examples that address, respectively, the evolution of metabolic investment strategies along resource gradients, and the evolution of seasonal flowering schedules in temporally varying environments.

Adaptation, Biological↗

Lack of integration, and seasonal variations in demand explained performance problems and waiting times for patients at emergency departments: a 3 years evaluation of the shift of responsibility between primary and secondary care by closure of two acute hospitals.

In 1996, Stockholm County decided to reduce the costs of health care in order to release resources for upcoming medical needs. The method was both structural changes and transfer of low technology care from hospitals to other settings. The effects of interventions on service quality for patients and organisational performance of departments of internal medicine, orthopaedics and surgery were evaluated. Three cross-sectional studies were performed for comparison over time. Details on all individuals who visited A&E departments during 1 week in May 1997, May 1998 and May 1999 were recorded prospectively, and 16246 visits were registered. From 1995 to 1999 the total number of visits increased by 21% according to annual statistics. The utilisation of emergency care rose by 40/1000, and was not associated with the growth of population by 4.5%. Hospitals responded to peaks of demand by stringent prioritisation. Median waiting times were unchanged, but mean waiting times were prolonged over time, in particular for younger, not-referred patients. There was a direct correlation between waiting times and number of visitors. Total length of stay at A&E departments was related mainly to the waiting time for the first examination by a physician and cycle time for X-rays. Increased number of visits strained the capacity of hospitals and led to temporary loss of service quality for patients. The expected chain-reaction of integrated care did not take place, since providers outside hospitals were resistant to the shift of responsibility. Hospitals were utilised as primary care centres. The sub-optimal integration and fragmented care with an inappropriate balance between providers seems a universal problem.

Cross-Sectional Studies↗

Building an inter-disciplinary science of health inequalities: the example of lifecourse research.

Across the post-industrial world, new public health strategies are being developed with the goal of reducing the socio-economic gradient in health. These new strategies are distinguished by a commitment to tackling the macro determinants of health inequalities through policies informed by scientific evidence. The engagement with macro determinants and with scientific evidence presents a major challenge to the health inequality research community. This is not only because of the complexity of the links between distal causes, proximal risk factors and health outcomes. It is also and more importantly because of the narrow disciplinary base of health inequality research. Grounded in social epidemiology, health inequality research has illuminated the pathways which run from individual socio-economic position to health-but has left in shadow the factors which influence socio-economic position. Broadening the evidence base to include these structural processes requires a new science of health inequalities, resourced both by epidemiological research and by research on social inequality and social exclusion. The paper demonstrates how such an inter-disciplinary science can be constructed. Taking lifecourse research as its example and the UK as its case study, it nests epidemiological research within social policy research: setting evidence on the health consequences of cumulative exposures within research on lifecourse dynamics, and locating both within analyses of how state policies can amplify or moderate inequalities in socio-economic position.

Developed Countries↗

Starting mental health services in Cambodia.

Cambodia has undergone massive psychosocial trauma in the last few decades, but has had virtually no western-style mental health services. For the first time in Cambodia a number of mental health clinics in rural areas have been started. This experience is used to discuss the risks and opportunities in introducing these services in the present war-torn situation. Basic statistics from the clinics are presented in the context of the historical and traditional setting, and the effort to maintain a culturally informed approach is described. The contrasting results in the clinics are analyzed in relation to factors intrinsic to the health care system and those related to the local population in order to highlight the issues involved in establishing future mental health services, both locally in other provinces and in situations similar to Cambodia. The efficacy of introducing low-cost, basic mental health care is shown, and related to the need to find solutions for prevailing problems on the psychosocial level. They can be introduced with modest means, and can be complementary to local health beliefs and traditional healing. In introducing mental health services, an approach is needed which adapts to the absorption potential of the health system as well as to the patients' need to find meaningful help. Existing resources, from the traditional healing sector to rudimentary village structures, cannot be neglected in the rehabilitation of the community, or in interventions to help the individual patient.

Adolescent↗

SOMA--workflow for small molecule property calculations on a multiplatform computing grid.

We present the concept of the SOMA workflow developed at the Finnish IT Center for Science CSC. The SOMA workflow unites multiplatform UNIX/LINUX computing resources and third-party software for calculating molecular structure and properties. The presented workflow components consist of the computing program XML descriptions, the core workflow program Grape, the toolkit for parsing program input and output, and the extranet interface. The program Grape and the developed XML descriptions of scientific programs allow researchers to link molecular modeling software into highly sophisticated computational workflows. SOMA collects the calculated data produced by the workflow and stores the computed information in the Chemical Markup Language (CML) format. The extranet interface is used for user authentication, building of the program interfaces and the workflows, and for sorting, filtering, and visualizing the results.

Journal Article↗

Lateral and vertical intergenerational exchange in rural Malawi.

Contemporary empirical literature on family resource flows in developing countries focuses on vertical flows between parents and children. Using data from the 1999 Family Transfers Project in Malawi this article examines a broader set of flows between adult respondents and their surviving parents, and paternal and maternal aunts and uncles. It compares the frequency and value of material and monetary flows, and the frequency of provision of other services, among these relatives. It also explores variation on these parameters across three ethnic groups, each of which has discrete normative patterns of descent, inheritance and postmarital residential arrangements. Results suggest that: (i) intergenerational support networks in Malawi are both vertical and lateral; (ii) in their transfer relationships, working aged adults have a net loss to parents, but a net gain to uncles and aunts, implying the existence of an institutionalized network for the transfer of resources among branches of the family; and (iii) lineal structures privilege kin of certain gender for certain roles. Maternal and paternal aunts are the largest source of material transfers among the matrilineal Yao, and paternal and maternal uncles are the largest source among the patrilineal Tumbuka.

Journal Article↗

Proactive personality and job performance: a social capital perspective.

This study of 126 employee-supervisor dyads examined a mediated model of the relationship between proactive personality and job performance. The model, informed by the social capital perspective, suggests that proactive employees reap performance benefits by means of developing social networks that provide them the resources and latitude to pursue high-level initiatives. Structural equation modeling suggested that the relationship between proactive personality and job performance is mediated by network building and initiative taking on the part of the employee.

Achievement↗

Are primary care groups and trusts consulting local communities?

Primary care groups and trusts (PCG/Ts) in the English NHS were established in 1999 and have responsibility for providing and commissioning health-care for around 100 000 people. PCG/Ts are dominated by health professionals, but are responsible for representing the interests of the local community. This paper assesses how they have informed and consulted local communities and the perceived impact of this consultation on decision-making. The paper uses evidence from the National Tracker Survey of PCG/Ts, a longitudinal survey of 72 (15%) of the PCG/Ts in England, using data from telephone interviews with chairs and chief officers, and postal questionnaires to lay board members and representatives of Community Health Councils (CHCs). Eighty-one per cent of PCG/Ts had public involvement working groups. Methods of consulting the community included consulting CHCs (87%), holding public meetings (75%) and consulting local patient groups (67%). Only 31% of chairs felt they were effective at consulting. Ninety-two per cent of CHC representatives attended all board meetings. Most CHC representatives reported that there had been little or no consultation with the CHC in areas such as commissioning, service development or clinical governance. Only 14% of CHC representatives rated PCG/T consultation with the public as effective. Eighty-seven per cent said that local communities were largely unaware of the existence of PCG/Ts, and 70% commented on the weaknesses in PCG/T efforts at public consultation. Public participation is being taken seriously by PCG/Ts, but most are struggling to develop effective ways of involving local communities. Efforts to involve the public may become little more than token gestures. The proposed abolition of CHCs may make it more difficult for PCG/Ts to obtain a lay perspective. Effective consultation requires the development of new methods and adequate resources, but a stronger lay voice in the governance structures of PCG/Ts is needed.

Community Health Planning↗

Knowledge, attitudes and practices of trained traditional birth attendants in the Gambia in the prevention, recognition and management of postpartum haemorrhage.

OBJECTIVES: to assess the knowledge, attitudes, practices and the potential role of trained Gambian traditional birth attendants (TBAs) in the prevention, recognition and management of postpartum haemorrhage (PPH). DESIGN: a qualitative, reflective approach using semi-structured interviews followed by group discussions. SETTING: poorly-resourced rural villages in The Gambia, West Africa. PARTICIPANTS: 22 trained TBAs and their supervisors from 12 villages. FINDINGS: the TBAs recognised complications such as retained placenta and excessive blood loss and were well aware of the need to refer these women to a health facility quickly. Delay in referral was often due to late call-out of the TBA or lack of transport. Although the TBAs did not know the causes of excessive blood loss, they knew that anaemia was a risk factor for dying from PPH. The TBAs were keen to improve their knowledge and to participate in further training. KEY CONCLUSIONS: although all the TBAs were illiterate, information from training programmes had usually been incorporated into their knowledge and practice. While the local infrastructure remains poor, home deliveries and delayed referrals will continue and interventions for PPH need to be effective at the site of delivery i.e. in the woman's home. These Gambian TBAs have the potential to contribute to the management of PPH in these situations. IMPLICATIONS FOR PRACTICE: these Gambian TBAs could be trained to implement other practices relevant to prevention of PPH in the primary care setting. Linking together and maximising the skills of all health workers is important to reduce PPH mortality in home births in this setting.

Adolescent↗

The "oil well analogy" as a comprehensive interpretation of factors leading to muscle injury and wasting.

Muscle abnormalities involved in chronic obstructive pulmonary disease (COPD) or the changes leading to muscle wasting and cachexia in neoplastic patients have a remarkable clinical impact, but their study is complex and findings are sometimes paradoxical. In this review, the main factors influencing muscle wasting and muscle abnormalities found in chronic diseases such as COPD are regarded in the light of a comprehensive approach. All this changes work in a complex, multifactorial manner, and experimental or observational approaches must take this fact into consideration. Two concepts that may be helpful in this regard are the "muscle compartment theory," by which different muscle groups, individual muscles, or muscle areas may react differently to a variety of stimuli and pathogenic factors, and the "oil well analogy," which reflects the complexity and variability of the energy resource depletion mechanisms in cells and tissues, leading to structural remodeling and functional adaptation or impairment.

Humans↗