490 research outputs found
The Ms. Stereotype : Could it be a Health Risk?
Two studies extend previous findings of stereotyping (a) within the nursing context (Ganong, 1993; Ganong & Coleman, 1992, Ganong et al., 1988), and (b) in relation to female title of address (Dion, 1987; Dion & Cota, 1991; Dion & Schuller, 1991; Heilder, 1975). Against the theoretical background of person perception theory and its influence upon the therapeutic nurse client relationship, study 1 investigates the extent to which nurses\u27 stereotype a vignetted female client on the basis of title of address. Fifty registered nurses from two hospitals rated their impressions and subsequent expectations of a vignetted client on the First Impressions Questionnaire (FIQ) and the Predicted Behavior of a Hospitalised Adult Questionnaire (PBHAQ). Three versions of the vignette corresponded to three titles of address: Ms., Miss, Mrs. Based on the previous findings of Ganong, (1993), it was predicted that title of address effects would be found. Results failed to support this prediction. However, feedback indicated that these results were potentially an artifact of the brevity of stimulus information supplied. Methodological, conceptual and theoretical implications of this finding were discussed. A second study was conducted to investigate these implications. Specifically, the impact of the level of apparent information upon a participant\u27s ability to form and record a stereotype was investigated. Participants consisted of 116 undergraduate psychology students who were randomly assigned to one of six conditions (explicitly preferred title of address x level of apparent information). The two title of address conditions were Ms. and Mrs. The three level of apparent information conditions were basic paragraph (low), basic plus transcript (moderate), and basic plus transcript plus audio recording (high). Participants were provided with a stimulus vignette of a female and asked to rate their first impressions and expectations of the stimulus person. Measures were the same as for study 1 (i.e., FIQ & PBHAQ) with the addition of confidence ratings. On the basis of both the previous findings of Dion (1987}, and of study 1, it was predicted that title of address and level of apparent information effects would be found. While expected level of information effects were found, no title of address effects were obtained. These·-findings were interpreted as indicating (a) the salience of level of apparent information as a methodological consideration for research, and (b) the limited replicability of title of address effects. The overall conclusion was that research, both within and without stereotyping, needs to pay more attention to examining stimulus presentation and boundedness of replicability m order to build a more valid and cohesive knowledge base
‘In een vrije markteconomie geniet het individu echte vrijheid..?’ (2): een visie op de vrije markt door de Nieuwe Communistische Partij Nederland (NCPN)
Wil van der Klift is voorzitter van de Nieuwe Communisitische Partij Nederland (NCPN), in 1992 opgericht als opvolger van de CPN
Recent developments in the rapid analysis of plants and tracking their bioactive constituents
Natural products chemistry has witnessed many new developments in the last 5 years like extractions with subcritical water and ionic liquids, LC/HRMS and LC/SPE/cryo-NMR, UHPLC, TLC/MS, MS-based preparative HPLC, comprehensive chromatography (GC × GC, LC × LC), high-throughput screening, introduction of monolithic columns, miniaturisation, and automated structure identification. Nevertheless identifying bioactive constituents in complex plant extracts remains a tedious process. The classical approach of bioassay guided fractionation is time-consuming while off-line screening of extracts does not provide information on individual compounds and sometimes suffers from false positives or negatives. One way out of this is by coupling chromatography with chemical or biochemical assays, so called high resolution screening. An example is the development of HPLC on-line assays for antioxidants. By the post-column addition of a relatively stable coloured radical like DPPH¿ or ABTS¿+, radical scavengers are detected as negative peaks because in a reaction coil they reduce the model radical to its reduced, non-coloured form. When combined with LC/DAD/MS and LC/SPE/NMR, reliable identification of active constituents becomes possible without the necessity of ever isolating them in a classical sense. Also for finding leads for new drugs, combining HPLC with biochemical assays is interesting but technically more difficult. Most enzymes do not work at the organic modifier concentrations commonly encountered in RP-HPLC and the reaction time is often longer requiring dilution and lengthy coils respectively. Therefore, new techniques have to be implemented to gain the required sensitivity for on-line enzyme assays. For stable analytes, high temperature LC offers a solution to the organic modifier problem. When enzymes are highly expensive, like those used in the screening for Cytochrome P450 inhibitors, miniaturisation to chip format may offer a way out. Microreactors (chips) are not only useful for miniaturising larger assays but also offer completely new prospects in phytochemical analysis. One such application is in the sample clean-up of acids and bases like alkaloids. In a lay-out of three parallel channels of 100 ¿m width with the middle one containing organic phase and the two outer ones water of high pH (feed phase) and low pH (trapping phase) such a chip replaces two classical LLE steps but is much faster and requires less solvents and less manpower input
Osteoporosis: more than fractures alone : an epidemiological approach
The main purposes of this thesis are to study the incidence of and risk factors
for vertebral fractures and to evaluate the interrelations between bone mineral
density, atherosclerosis and breast cancer, all of which are considered to be
influenced by estrogen exposure. We will look into fracture prevention; are the
current methods for identifying subjects at risk for fractures adequate and
should men and women be treated equally. Finally, the results of these studies
are combined in a model on cost-effectiveness of fracture prevention In Chapter 2, vertebral fractures are investigated in both men and women. In
chapter 2.1, the incidence of vertebral fractures will be described. In addition, the
associations of incident vertebral fractures with both BMD and the presence of
baseline prevalent vertebral fractures are studied. In chapter 2.2, we extended the
analyses on risk factors for incident vertebral fractures for men and women. At
first, we evaluated potential risk factors univariately for an association \Vith
incident vertebral fractures. Then, we evaluated whether univariately sigoificant risk factors were independent from BMD, prevalent vertebral fractures and
from each other.
In Chapter 3, we study the value of a T -score of BMD in fracture prevention.
In Chapter 3.1 it is evaluated whether the current criterion for osteoporosis, as
defined by the 'WHO, of a T-score at or below -2.5, is useful in accurately
identifying women who will fracture within the coming years. Chapter 3.2
discusses whether the association between BMD and fractures is similar for
both men and women and if so, whether using a gender specific T -score of
BMD is useful in describing the problem of osteoporosis in men.
Chapter 4 describes the associations between BMD and diseases other than
osteoporosis that are also considered to be influenced by estrogen exposure.
First, in Chapter 4.1, the association between BMD and peripheral arterial
disease, which is a measure for generalised atherosclerosis, is described. Chapter
4.2 then shows the association between BMD and incident breast cancer in
women.
Following the associations between BMD and morbidity, the association
between femoral neck BMD and overall mortality is described for both men and
women in Chapter 5.
The results of a mathematical model on the cost-effectiveness of fracture
prevention are discussed in Chapter 6. This model is an example of how the
results as described in the previous chapters can be used to evaluate the costeffectiveness
of fracture prevention. In this model, different treatment strategies
ofHRT, SERMs and bisphosphonates are compared.
Finally, in Chapter 7 the overall results of this thesis are placed in perspective in
a general discussion. We further discuss pitfalls, as well as the clinical relevance
of the research that was presented in this thesis. The general discussion ends
with some suggestions for further research
Does Acupuncture Needling Induce Analgesic Effects Comparable to Diffuse Noxious Inhibitory Controls?
Diffuse noxious inhibitory control (DNIC) is described as one possible mechanism of acupuncture analgesia. This study investigated the analgesic effect of acupuncture without stimulation compared to nonpenetrating sham acupuncture (NPSA) and cold-pressor-induced DNIC. Forty-five subjects received each of the three interventions in a randomized order. The analgesic effect was measured using pressure algometry at the second toe before and after each of the interventions. Pressure pain detection threshold (PPDT) rose from 299 kPa (SD 112 kPa) to 364 kPa (SD 144), 353 kPa (SD 135), and 467 kPa (SD 168) after acupuncture, NPSA, and DNIC test, respectively. There was no statistically significant difference between acupuncture and NPSA at any time, but a significantly higher increase of PPDT in the DNIC test compared to acupuncture and NPSA. PPDT decreased after the DNIC test, whereas it remained stable after acupuncture and NPSA. Acupuncture needling at low pain stimulus intensity showed a small analgesic effect which did not significantly differ from placebo response and was significantly less than a DNIC-like effect of a painful noninvasive stimulus
Etanercept for steroid-refractory acute graft-versus-host disease
Background: Acute graft-versus-host disease (aGVHD) is an important complication of allogeneic stem cell transplantation (alloSCT). High dose glucocorticosteroids, are currently recommended as first-line treatment for grade II-IV aGVHD resulting in overall complete responses (CR) in 40%-50% of patients. No standard second-line regimen has been established. Different options have been reported, including anti-TNFα antibodies. Methods: We retrospectively reviewed the outcome of 15 patients with steroid-refractory (SR) aGVHD treated with etanercept at our institution. Patients were transplanted for a hematological malignancy and received either a myeloablative or a non-myeloablative conditioning regimen. Prophylaxis of GVHD consisted of cyclosporin A and mycophenolic acid. Results: Acute GVHD was diagnosed at a median of 61 days post-transplantation. All patients had grade III aGVHD of the gut. Second-line treatment with etanercept was started at a median of 13 days after initiation of first-line therapy. Overall response rate was 53%, with CR in 3 patients and PR in 5 patients. Median overall survival after initiation of treatment with etanercept was 66 days (range 5–267) for the entire group. Median overall survival was 99 days (range 47–267 days) for responders and 17 days (range 5–66 days) for non-responders (p<0.01). Nevertheless, all patients died. Causes of death were progressive GVHD in 7 patients (47%), infection in 6 patients (40%), cardiac death in 1 patient (6.7%) and relapse in 1 patient (6,7%). Conclusion: Second-line treatment with etanercept does induce responses in SR-aGVHD of the gut but appears to be associated with poor long-term survival even in responding patients
Next-generation sequencing of immunoglobulin gene rearrangements for clonality assessment: a technical feasibility study by EuroClonality-NGS
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Dysregulated signaling, proliferation and apoptosis impact on the pathogenesis of TCRγδ+ T cell large granular lymphocyte leukemia
TCRγδ+ T-LGL leukemia is a rare form of chronic mature T cell disorders in elderly, which is generally characterized by a persisten
Thiazide diuretics and the risk for hip fracture
BACKGROUND: Since most hip fractures are related to osteoporosis, treating accelerated bone loss can be an important strategy to prevent hip fractures. Thiazides have been associated with reduced age-related bone loss by decreasing urinary calcium excretion. OBJECTIVE: To examine the association between dose and duration of thiazide diuretic use and the risk for hip fracture and to study the consequences of discontinuing use. DESIGN: Prospective population-based cohort study. SETTING: The Rotterdam Study. PARTICIPANTS: 7891 individuals 55 years of age and older. MEASUREMENTS: Hip fractures were reported by the general practitioners and verified by trained research assistants. Details of all dispensed drugs were available on a day-to-day basis. Exposure to thiazides was divided into 7 mutually exclusive categories: never use, current use for 1 to 42 days, current use for 43 to 365 days, current use for more than 365 days, discontinuation of use since 1 to 60 days, discontinuation of use since 6
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