The nuclear DNA of eukaryotes is organized into a series of loops each topologically anchored by elements of the nuclear matrix. Evidence is reviewed which indicates that the anchorage points of the loops are formed by transcriptionally active genes and that individual loops function as replicons. The data suggests a specific model for coupling of DNA replication and transcription in eukaryotes.

Children deserve optimal medical care. Although prescription drugs play a prominent and essential role in pediatric health care delivery, health care providers often must make prescribing decisions for their young patients based on imperfect or absent safety and efficacy data for pediatric populations. Until relatively recently, the Food and Drug Administration made surprisingly little effort to improve the quality or quantity of clinical research data for this patient group. Despite recent agency efforts to improve the situation, only one-third of drugs (...) prescribed to children currently have been studied for safety and efficacy in pediatric populations. Moreover, recent agency initiatives to encourage pediatric drug research have generated mixed results and unintended consequences. The complex of issues surrounding the testing and prescribing of prescription drugs used for children will require that pharmaceutical companies, the FDA, and health care providers examine current practices, acknowledge their shortcomings, and consider cooperative, creative solutions. (shrink)

Paul Appelbaum and colleagues propose four models of informed consent to research that deploys whole genome sequencing and may generate incidental findings. They base their analysis on empirical data that suggests that research participants want to be offered incidental findings and on a normative consensus that researchers incur a duty to offer them. Their models will contribute to the heated policy debate about return of incidental findings. But in my view, they do not ask the foundational question, In the context (...) of genome sequencing, how much work can consent be asked to do? (shrink)

We critique the distinction Byrne makes between strong causes and enabling conditions, and its implications, on both theoretical and empirical grounds. First, we believe that the difference is psychological, not logical. Second, we disagree that there is a strict Third, we disagree that it is easier for people to generate causes than counterfactuals.

The cytokine interferon‐γ (IFN‐γ), initiates both cell cycle arrest and cell death in certain cell lines. Through a novel strategy of cell transfection with episomal vectors expressing antisense cDNAs, Deiss et al.(1.2) have demonstrated that it is possible to isolate genes that are required for the initiation of cell death by the cytokine IFN‐γ. This approach, referred to as TKO, for Technical Knock Out, has identified several genes whose activity appears to be essential for the induction of apoptosis by IFN‐γ (...) in HeLa cells. Interestingly, these genes appear to mediate IFN‐γ‐induced apoptosis in HeLa cells, but their inhibition by antisense does not ameliorate the anti‐proliferative effects of IFN‐γ in these cells. The clever strategy employed by these authors holds promise for others who wish to isolate genes required for other differentiative processes in cultured cell lines. (shrink)

SummaryCross-sectional studies in Australia and the Philippines and a longitudinal prospective study in a selected Australian sample of breast-feeding mothers have shown that basal serum prolactin concentrations are elevated during 15–21 months of lactational amenorrhoea.A predictive model of serum PRL levels and return of cyclic ovarian activity during full breast-feeding, partial breast-feeding and weaning has been developed from the results of breast-feeding behaviour and serum PRL, gonadotrophin and oestradiol measurements in 34 mothers breast-feeding on demand for a mean of 67 (...) weeks.Breast-feeding patterns influence serum PRL levels. Important factors during full breast-feeding are the age of the baby, the longest interval between feeds at night and total 24-hr suckling time, and following the introduction of supplements, the mean interval between feeds, together with the total 24-hr suckling time and the number of solid supplements per day.The precise mechanisms whereby breast-feeding regulates cyclic ovarian activity remain unknown. Gonadotrophin secretion appears to be quantitatively normal, but qualitative changes, secondary to altered hypothalamic activity, may be the most important factor. A direct inhibitory effect of PRL on ovarian follicular development and steroidogenesis remains possible.Ovulation with a normal luteal phase is probable for 30% of breast-feeding mothers before the first menses, but is unlikely before 6 months, provided breast-feeding is frequent day and night.Measurement of serum PRL is a sensitive index of the return of menstruation and fertility during lactation in the population studied. (shrink)

The theme of this special issue is Post-truth. No doubt it was my exasperation with the terminological state of our collective situation that incited me in the spring of 2017 to settle upon it. What, exactly, does the hyphenated couplet mean or to what does it refer? What is its significance or sense? How is it being used, by whom, for what purpose, and with what consequences—for whom? And if, as was being asserted on nearly every side, we currently find (...) ourselves in post-truth, how might we ever get out, presuming we may one day want as much? The original contributions by Sarah Burgess, James Crosswhite, Jason David Myres, Bradford Vivian, and Eric King Watts published herein go a long way toward answering these... (shrink)

This article explores risk in professional nursing practice. Professional risk refers to the threat of professional discipline if it is found that a registered nurse has violated professional nursing practice standards. We argue professional risk is socially constructed and understood differently by nurse regulatory bodies, unions, professional associations and frontline nurses. Regulatory bodies emphasize professional accountability of nurses; professional associations focus on system problems in health‐care; unions undertake protecting nurses' right to health and safety; and frontline nurses experience fear and (...) uncertainty in their attempt to interpret practice standards to avoid professional discipline. Perspectives of professional risk are investigated by analyzing three professional nursing bodies' views of professional codes governing the right of nurses to refuse unsafe work assignments. The workplace dynamics surrounding work refusal experienced by frontline nurses are illustrated primarily through the lens of the 2003 SARS influenza outbreak in Ontario, Canada. We conclude that frontline nurses in Ontario are required to manage risk by following professional protocols prioritizing patient care and professional accountability which disregard the systemic, unpredictable and hazardous circumstances in their everyday practice. Moreover, we argue professional protocols cannot anticipate every eventuality in clinical practice creating the fear of professional discipline for nurses. (shrink)

On the fiftieth anniversary of Philosophy and Rhetoric I hope a future for the journal that not only continues to publish scholarship that reflects seriously on the productive possibilities of putting the unique understandings of the human condition delivered by philosophy into contact with the singular insights into the power and perils of speech, writing, and gesture offered up by rhetoric. I also wish for it printed pages on which scholars engage thoughtfully the challenges posed by worlds and loss of (...) worlds. Never before in my lifetime has this task seemed so urgent and so necessary. This article is delivered in that spirit.On 13 July 2013 a jury of six women in Sanford, Florida, returned a verdict of not... (shrink)

Previous research has established that creative adolescents are generally low in neuroticism and as well-adjusted as their peers. From 2006 to 2013, data from cohorts of creative adolescents attending a counseling laboratory supported these results. Clinical findings of increased anxiety, depression, and suicidality among creative students in 2014 led the researchers to create 3 studies to explore these clinical findings. Once artifactual causes of these changes were ruled out, a quantitative study was conducted. Study 1, an analysis of mean differences (...) of pre-2014 and post-2014 cohorts showed that post-2014 cohorts scored significantly higher in Neuroticism, Openness to Experience, and Conscientiousness and lower in Extraversion on Big 5 inventories. Regression analyses suggested that while Neuroticism was associated with gender, Conscientiousness and Grade Point Average for the earlier group, Neuroticism in the post 2014 groups was related to complex interplay of all personality dynamics except Agreeableness. In the qualitative Study 2, focus groups of 6–10 students, for a total of 102 participants were queried about the reasons they perceived for increased anxiety and depression in creative students. Increased achievement pressures and awareness of environmental and social problems were major sources of external stressors; perfectionism and desire to fulfill expectations of others were the primary sources of internal stress. The authors suggest that creative students' openness to experience and advanced knowledge made it possible for these students to see the potential for environmental and social crises and respond to their inability to solve these problems with anxiety and depression. Study 3 was a qualitative study that followed up 19 participants from the post-2014 cohort to explore the impact of the COVID-19 pandemic on mental health and creativity. While the majority perceived a negative effect of the pandemic on their mental health, most also produced a surprising variety of creative works during that time. In conclusion, rapid changes in the lives of creative adolescents since 2014 suggest that scholars focus on current cohorts and the ways in which adolescent personality is shaped by internal expectation and external pressures and global events. Despite the pandemic, creative young people continued to create. (shrink)

The purpose of this paper is to examine the various guidelines presented in the literature for instituting an ethics curriculum and to empirically study their effectiveness. Three questions are addressed concerning the trainability of ethics material and the proper integration and implementation of an ethics curriculum. An empirical study then tested the effect of ethics training on moral awareness and reasoning. The sample consisted of two business classes, one exposed to additional ethics curriculum (experimental), and one not exposed (control). For (...) the experimental group, ethics exercises and discussion relevant to each topic were completed. Findings suggested gender differences such that, relative to other groups, women in the experimental group showed significantly improved moral awareness and decision-making processes. An explanation of the underlying cognitive processes is presented to explain the gender effect. (shrink)

When base rates are learned and used in an experiential manner subjects show better base rate use, perhaps because the implicit learning system is engaged. A causal framework in which base rates are relevant might also be necessary. Humans might thus perform better on more ecologically valid tasks, which are likely to contain those three components.

In this study, a decision modeling approach is used to measure the relative importances of four social responsibility components. When given information concerning the economic, legal, ethical and philanthropic activities of 16 hypothetical organizations, 159 junior and senior management students judged the social responsibility of these firms. The study used two types of analysis: first, a within-subject regression, then a between-subject ANOVA. Results showed ethical behavior to be most important in judging social responsibility; legal behavior was second, discretionary behavior third, (...) and economic behavior was least important. In addition, all but one rater consistently applied the social responsibility components. The implications of these results and suggestions for future research are discussed. (shrink)

To understand public discourse in the United States on genetic causation of behavioral disorders, we analyzed media representations of genetic research on addiction published between 1990 and 2010. We conclude first that the media simplistically represent biological bases of addiction and willpower as being mutually exclusive: behaviors are either genetically determined, or they are a choice. Second, most articles provide only cursory or no treatment of the environmental contribution. A media focus on genetics directs attention away from environmental factors. Rhetorically, (...) media neglect the complexity underlying the etiology the addiction and direct focus back toward individual causation and responsibility. (shrink)

In line with the concept of politics developed by ancient Greeks, the political sphere is identified with transparency and overtness. However, it has always been hiding secret actions, conspiracies and collusions. The emergence of the modern model of the state, along with the rationalisation of its structures, enabled the secret equivalents of authority to transform into organisations, i.e. institutions alternative to official organisations, established by law and having specific powers. Rather than talking about actual organisations, the author discusses the process (...) whereby these secret, underground structures turn into organisations that influence the sphere of overt politics. She tries to show that this is a specific kind of game between what is explicit and public and what is concealed and secret. This game is constantly present in political activities, although we seldom realise it. (shrink)

Prologue: love of children lost and found for teacher educators -- The seed of play -- The seed of hope -- The seed of imaginative voice -- The seed of change -- The seed of unmasking -- The seed of inner awareness -- The seed of freedom -- The seed of love.

Arguing that the fruitful approach to a reworking of the social depends upon forging an alliance between sociological theory and feminist theory, the paper analyses strands in sociological thinking which are responsible for renewed interest in the ‘social’. The first perspective, as developed by Touraine, Urry, Bauman and Castells, formulates a new agenda for ‘sociology beyond the social’ and emphasizes the limitations of the concept of ‘the social as society’. The second orientation, represented here by Richard Sennett, tracks the shifting (...) relationships between public and private. The third strand, illustrated by the recent work of Robert Putnam, focuses on the notion of social capital. A comparison between these perspectives introduces my argument that we should search for a new balance not only between local and global, and private and public, but also between formality and informality as only such an approach has the potential to capture the complexity of and the interdependence between conditions responsible for the production of demands for trust and ways of generating trust. The paper argues that how actors strike the optimal balance between formality and informality in interactions depends on the specific characteristics of different realms of interaction. Therefore, in conclusion, I describe three styles of interaction: civility, sociability and intimacy, which represent the essential basis for an enhanced quality of social and personal life. (shrink)

The two target articles in this issue bring into focus the struggle for governance over biomedical interventions that may offer some families more agency—the capacity to act—in the context of many...

This article argues that today’s search for identity, in the context of the rise of a new spirituality and the decline of authoritative memories, facilitates the forging of a new connection between soul and memory and enhances the importance of traumatic memories. Consequently, we witness the sacralization of memory which in unsettled times, when memories tend to become fixed and frozen, can undermine intergroup cooperation. The article asserts that an ethical burden, prompted by viewing memory as the surrogate of the (...) soul and the overrating of the importance of the politics of identity, can result in the displacement of public concerns with private ones. It stresses a need to rethink what kind of memory is compatible with a just, pluralist and cohesive democratic system. (shrink)