Utrecht University

About: Utrecht University is a education organization based out in Utrecht, Utrecht, Netherlands. It is known for research contribution in the topics: Population & Poison control. The organization has 58176 authors who have published 139351 publications receiving 6214282 citations. The organization is also known as: UU & Universiteit Utrecht.

Viewpoint: Competency-Based Postgraduate Training: Can We Bridge the Gap between Theory and Clinical Practice?

Abstract: The introduction of competency-based postgraduate medical training, as recently stimulated by national governing bodies in Canada, the United States, the United Kingdom, The Netherlands, and other countries, is a major advancement, but at the same time it evokes critical issues of curricular implementation. A source of concern is the translation of general competencies into the practice of clinical teaching. The authors observe confusion around the term competency, which may have adverse effects when a teaching and assessment program is to be designed. This article aims to clarify the competency terminology. To connect the ideas behind a competency framework with the work environment of patient care, the authors propose to analyze the critical activities of professional practice and relate these to predetermined competencies. The use of entrustable professional activities (EPAs) and statements of awarded responsibility (STARs) may bridge a potential gap between the theory of competency-based education and clinical practice. EPAs reflect those activities that together constitute the profession. Carrying out most of these EPAs requires the possession of several competencies. The authors propose not to go to great lengths to assess competencies as such, in the way they are abstractly defined in competency frameworks but, instead, to focus on the observation of concrete critical clinical activities and to infer the presence of multiple competencies from several observed activities. Residents may then be awarded responsibility for EPAs. This can serve to move toward competencybased training, in which a flexible length of training is possible and the outcome of training becomes more important than its length.

Global air pollution crossroads over the Mediterranean

Abstract: The Mediterranean Intensive Oxidant Study, performed in the summer of 2001, uncovered air pollution layers from the surface to an altitude of 15 kilometers. In the boundary layer, air pollution standards are exceeded throughout the region, caused by West and East European pollution from the north. Aerosol particles also reduce solar radiation penetration to the surface, which can suppress precipitation. In the middle troposphere, Asian and to a lesser extent North American pollution is transported from the west. Additional Asian pollution from the east, transported from the monsoon in the upper troposphere, crosses the Mediterranean tropopause, which pollutes the lower stratosphere at middle latitudes.

Hostile attribution of intent and aggressive behavior: a meta-analysis.

Abstract: A meta-analytic review was conducted to explain divergent findings on the relation between children's aggressive behavior and hostile attribution of intent to peers. Forty-one studies with 6,017 participants were included in the analysis. Ten studies concerned representative samples from the general population, 24 studies compared nonaggressive to extremely aggressive nonreferred samples, and 7 studies compared nonreferred samples with children referred for aggressive behavior problems. A robust significant association between hostile attribution of intent and aggressive behavior was found. Effect sizes differed considerably between studies. Larger effects were associated with more severe aggressive behavior, rejection by peers as one of the selection criteria, inclusion of 8- to-12-year-old participants, and absence of control for intelligence. Video and picture presentation of stimuli were associated with smaller effect sizes than was audio presentation. Staging of actual social interactions was associated with the largest effects. The importance of understanding moderators of effect size for theory development is stressed.

Immuno-localization of the insulin regulatable glucose transporter in brown adipose tissue of the rat

Abstract: Antibodies specific for the insulin-regulatable glucose transporter (GLUT 4) were used to immunolocalize this protein in brown adipose tissue from basal- and insulin-treated rats. Cryosections of fixed tissue were incubated with antibodies, which were subsequently labeled with Protein A/gold and examined by EM. Antibodies against albumin and cathepsin D were also used with gold particles of different sizes to identify early and late endosomes, respectively. Under basal conditions 99% of the GLUT 4 labeling was located within the cell. Labeling was predominantly in the trans-Golgi reticulum and tubulo-vesicular structures elsewhere in the cytoplasm. In insulin-stimulated cells approximately 40% of the GLUT 4 labeling was at the cell surface, where it was randomly distributed, except for occasional clustering in coated pits. Moreover, after insulin treatment, GLUT 4 was also enriched in early endosomes. We conclude that translocation of GLUT 4 to the cell surface is the major mechanism by which insulin increases glucose transport. In addition, these results suggest that in the presence of insulin GLUT 4 recycles from the cell surface, probably via the coated pit-endosome pathway that has been characterized for cell surface receptors, and also that insulin causes the redistribution of GLUT 4 by stimulating exocytosis from GLUT 4-containing tubulo-vesicular structures, rather than by slowing endocytosis of GLUT 4.