Is the communicative behavior of GPs during the consultation related to the diagnosis? A cross-sectional study in six European countries

This study explores the relation between the diagnosis made by the general practitioner (GP) and his or her communicative behavior within a consultation, by means of the analysis of 2095 videotaped consultations of 168 GPs from six countries participating in the Eurocommunication study. The doctors' diagnoses were coded into ICPC chapters and merged into seven clinically relevant diagnostic clusters. The communicative behavior was gauged by means of the Roter interaction analysis system (RIAS). We found the most important differences for consultations about psychosocial problems as compared to all other diagnostic categories. In these consultations, doctors show more affective behavior, are more concerned about having a good relationship with their patients, ask more questions and give less information than in other consultations. The percentages of utterances in the other diagnostic categories were pretty similar. The communicative behavior of doctors reflects a global pattern in every consultation. This pattern is the most stable for affective behavior (social talk, agreement, rapport building and facilitation). Within instrumental behavior (the other categories), the directions and the information the doctor gives are adapted to the problems presented.     

Strain-specific regulation of striatal phenotype in Drd2-eGFP BAC transgenic mice

Mice carrying bacterial artificial chromosome (BAC) transgenes have become important tools for neuroscientists, providing a powerful means of dissecting complex neural circuits in the brain. Recently, it was reported that one popular line of these mice--mice possessing a BAC transgene with a D(2) dopamine receptor (Drd2) promoter construct coupled to an enhanced green fluorescent protein (eGFP) reporter--had abnormal striatal gene expression, physiology, and motor behavior. Unlike most of the work using BAC mice, this interesting study relied upon mice backcrossed on the outbred Swiss Webster (SW) strain that were homozygous for the Drd2-eGFP BAC transgene. The experiments reported here were conducted to determine whether mouse strain or zygosity was a factor in the reported abnormalities. As reported, SW mice were very sensitive to transgene expression. However, in more commonly used inbred strains of mice (C57BL/6, FVB/N) that were hemizygous for the transgene, the Drd2-eGFP BAC transgene did not alter striatal gene expression, physiology, or motor behavior. Thus, the use of inbred strains of mice that are hemizygous for the Drd2 BAC transgene provides a reliable tool for studying basal ganglia function.     

Antiviral effect of maraviroc in semen: a case report

We describe the antiviral effect of maraviroc in a patient who had been shedding high levels of HIV-1 in seminal fluid for three years despite an undetectable blood plasma viral load. Adding maraviroc to HAART stopped the seminal shedding. We discuss the mechanisms involved and the effect on sexual transmission.     

Altered salivary alpha-amylase awakening response in Bosnian War refugees with posttraumatic stress disorder

In posttraumatic stress disorder (PTSD), chronic activation of the sympathetic nervous system (SNS) has been suggested. No study so far has investigated diurnal secretion patterns of salivary alpha-amylase (sAA) in PTSD, a promising candidate for non-invasive assessment of SNS activity. We compared sAA diurnal profiles between a group of Bosnian War refugees with PTSD and a healthy control group, and further analyzed for associations with psychiatric symptoms and glucocorticoid (GC) sensitivity of inflammatory regulation. PTSD patients showed a sAA awakening response profile that was opposite to those seen in healthy controls, i.e. an increase instead of a sharp decrease. Patterns of sAA secretion were further positively associated with psychiatric symptoms of PTSD. Finally, higher sAA awakening responses were associated with higher GC sensitivity of inflammatory cytokine production. These findings are in line with altered SNS function in PTSD, and lend further support for employing assessment of diurnal sAA profiles as non-invasive biomarkers in stress-related disease.     

A six-minute video-clip to ponder the values fostered by health technology

As part of our research team''s knowledge transfer and exchange (KTE) initiatives, we developed a six-minute video-clip to enable productive deliberations among technology developers, clinicians and patient representatives. This video-clip summarises in plain language the valuable goals and features that are embedded in health technology and raises questions regarding the direction that should be taken by health care innovations. The use of such video-clips creates unique opportunities for face-to-face deliberations by enabling participants to interact and debate policy issues that are pivotal to the sustainability of health care systems. In our experience, we found that audiovisual-elicitation-based KTE initiatives can fill an important communication gap among key stakeholders: pondering, from a health care system perspective, why and how certain kinds of medical technologies bring a more valuable response to health care needs when compared to others.     

An adult passive transfer mouse model to study desmoglein 3 signaling in pemphigus vulgaris

Evidence has accumulated that changes in intracellular signaling downstream of desmoglein 3 (Dsg3) may have a significant role in epithelial blistering in the autoimmune disease pemphigus vulgaris (PV). Currently, most studies on PV involve passive transfer of pathogenic antibodies into neonatal mice that have not finalized epidermal morphogenesis, and do not permit analysis of mature hair follicles (HFs) and stem cell niches. To investigate Dsg3 antibody-induced signaling in the adult epidermis at defined stages of the HF cycle, we developed a model with passive transfer of AK23 (a mouse monoclonal pathogenic anti-Dsg3 antibody) into adult 8-week-old C57Bl/6J mice. Validated using histopathological and molecular methods, we found that this model faithfully recapitulates major features described in PV patients and PV models. Two hours after AK23 transfer, we observed widening of intercellular spaces between desmosomes and EGFR activation, followed by increased Myc expression and epidermal hyperproliferation, desmosomal Dsg3 depletion, and predominant blistering in HFs and oral mucosa. These data confirm that the adult passive transfer mouse model is ideally suited for detailed studies of Dsg3 antibody-mediated signaling in adult skin, providing the basis for investigations on novel keratinocyte-specific therapeutic strategies.