226 research outputs found
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A bookmark which describes the 3 easy steps that academics have to do, to add their research outputs to the Current Research Information System (CRIS) and the reasons for making your publications open access. Distributed at the REF Roadshows, October - December 201
Kiwi forego vison in the guidance of their nocturnal activities
We propose that the Kiwi visual system has undergone adaptive regression evolution driven by the trade-off between the relatively low rate of gain of visual information that is possible at low light levels, and the metabolic costs of extracting that information
Misuse of over the counter medicines in community pharmacies in Scotland
The general public are taking more responsibility for their health, using community pharmacy as a source to access medication. There are a reported increase and change in the misuse of OTC medication from community pharmacies in Scotland (Wright et al, 2015). This article was designed to examine the self-reported use of medication from a small sample of community pharmacies in Scotland. The questionnaire gathered patient demographics and details of medicines used. The study concentrated on two treatment areas, opioid analgesics, and sedative antihistamines licensed as a sleep aid. Both previously identified as the most prevalent OTC medications that were perceived to being misused (Matheson et al, 2007). Data were collected over a short time period in 2015 from 15 community pharmacies. The data demonstrate the widespread misuse of OTC. The most prevalent group identified as females, 41–60 years old and employed. It was most commonly reported that the recommended treatment duration is exceeded rather than the maximum recommended daily dose. The recommendations from the article are that there needs to be greater awareness for pharmacists, pharmacy staff, and general public on the potential dangers of misusing OTC medications and the importance of adhering to the recommended dosing and duration guidelines
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Intolerance of uncertainty predicts altered threat expectancy ratings during reinstatement
Intolerance of uncertainty (IU) is a transdiagnostic risk factor for psychiatric disorders, and plays an important role in fear and threat learning under uncertainty. The ‘reinstatement of fear/threat’ is an understudied phenomenon thought to represent clinical symptom relapse. Reinstatement of conditioned responding can be captured in the laboratory by presenting unsignaled presentations of an aversive unconditional stimulus. The present study investigated IU as a predictor of reinstatement effects, such that individuals higher in IU, relative to lower IU, would show larger reinstatement. Sixty-two participants completed the Intolerance of Uncertainty Scale and provided threat expectancy ratings (i.e. certainty of receiving a shock) during a differential threat conditioning and extinction paradigm with reinstatement. Findings suggested a differential increase in threat expectancy ratings to both the threat and safety cue following reinstatement, although this effect was small and did not survive follow-up tests. Nevertheless, IU was a significant predictor of reinstatement to the threat cue but not the safety cue, although this effect was not in the expected direction. Specifically, higher IU was associated with reduced threat expectancy ratings post-reinstatement. These findings provide support for the limited literature demonstrating an important role for IU in reinstatement effects and should be investigated further
Neurokinin B Receptor Antagonism in Women with Polycystic Ovary Syndrome: A Randomized, Placebo-Controlled Trial
Context:
Polycystic ovary syndrome (PCOS), the most common endocrinopathy in women, is characterized by high secretion levels of LH and T. Currently, there is no treatment licensed specifically for PCOS.
Objective:
The objective of this study was to investigate whether a targeted therapy would decrease LH pulse frequency in women with PCOS, subsequently reducing serum LH and T concentrations and thereby presenting a novel therapeutic approach to the management of PCOS.
Design:
This study is a double-blind, double-dummy, placebo-controlled, phase 2 trial.
Settings:
University hospitals and private clinical research centers were included.
Participants:
Women with PCOS aged 18–45 years participated.
Intervention:
Intervention included AZD4901 (a specific neurokinin-3 [NK3] receptor antagonist) at a dose of 20, 40, or 80 mg/day or matching placebo for 28 days.
Main Outcome Measure:
Change from baseline in the area under the LH serum concentration–time curve over 8 hours (area under the curve) on day 7 relative to placebo was measured.
Results:
Of a total 67 randomized patients, 65 were evaluable. On day 7, the following baseline-adjusted changes relative to placebo were observed in patients receiving AZD4901 80 mg/day: 1) a reduction of 52.0% (95% confidence interval [CI], 29.6–67.3%) in LH area under the curve; 2) a reduction of 28.7% (95% CI, 13.9–40.9%) in total T concentration; and 3) a reduction of 3.55 LH pulses/8 hours (95% CI, 2.0–5.1) (all nominal P < .05).
Conclusions:
The NK3 receptor antagonist AZD4901 specifically reduced LH pulse frequency and subsequently serum LH and T concentrations, thus presenting NK3 receptor antagonism as a potential approach to treating the central neuroendocrine pathophysiology of PCOS.
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Savanna elephant numbers are only a quarter of their expected values
Savannas once constituted the range of many species that human encroachment has now reduced to a fraction of their former distribution. Many survive only in protected areas. Poaching reduces the savanna elephant, even where protected, likely to the detriment of savanna ecosystems. While resources go into estimating elephant populations, an ecological benchmark by which to assess counts is lacking. Knowing how many elephants there are and how many poachers kill is important, but on their own, such data lack context. We collated savanna elephant count data from 73 protected areas across the continent estimated to hold ~50% of Africa’s elephants and extracted densities from 18 broadly stable population time series. We modeled these densities using primary productivity, water availability, and an index of poaching as predictors. We then used the model to predict stable densities given current conditions and poaching for all 73 populations. Next, to generate ecological benchmarks, we predicted such densities for a scenario of zero poaching. Where historical data are available, they corroborate or exceed benchmarks. According to recent counts, collectively, the 73 savanna elephant populations are at 75% of the size predicted based on current conditions and poaching levels. However, populations are at <25% of ecological benchmarks given a scenario of zero poaching (~967,000)—a total deficit of ~730,000 elephants. Populations in 30% of the 73 protected areas were <5% of their benchmarks, and the median current density as a percentage of ecological benchmark across protected areas was just 13%. The ecological context provided by these benchmark values, in conjunction with ongoing census projects, allow efficient targeting of conservation efforts.S1 File. Additional methods and supporting results and references. This file contains Supporting
Information Materials and Methods; Figure A (study schematic), Figure B (23 time
series and best-fit population models); Figure C (partial residual plots of components of model
averaged GLM to explain PIKE values from MIKE sites); Figure D (comparison of GAMs to
explain extracted stable densities with and without influential points); Figure E (histogram of
ecological benchmark estimates for each of 73 protected areas illustrating results of Monte
Carlo simulation to incorporate uncertainty); Figure F (histogram of cumulative ecological
benchmark across 73 protected areas recalculated for each of 1x10^6 runs from the Monte Carlo simulation to incorporate uncertainty); Table A (alternative candidate models to
describe the population dynamics of 23 time-series populations); Table B (summary information
on time series and extracted stable density and SE); Table C (summary information for 43
MIKE sites and the explanatory variables used to explain PIKE); Table D (Summary statistics
and variables included in most likely quasi-binomial generalized linear models to explain
PIKE for 43 MIKE sites across Africa and final predictive average model used to generate
PIKE estimates for non-MIKE sites); Table E (selection parameters of candidate generalized
additive models explaining variation in extracted stable population size for 18 populations);
Table F (summary information, predicted stable density (give current PIKE), and ecological
benchmark density (given zero PIKE), and comparisons between most recent density and population
size estimates and ecological benchmark density and population size for 73 protected
areas across 21 countries); and Supporting Information References.R.J.v.A. received funding from the
International Fund for Animal Welfare (ifaw.org),
the National Research Foundation (nrf.ac.za), and the University of Pretoria (up.ac.za).http://www.plosone.orgam2017Zoology and Entomolog
Predicting management development and learning behaviour in New Zealand SMEs
Despite concern on the part of policy makers to raise managerial capability in SMEs, there is little evidence on the key drivers of owner-manager participation in management development programmes. The authors argue that such participation is poorly understood. The paper develops a predictive model of the drivers of participation in sources of learning by owner-managers. It tests a theoretical model, based on the small firm as a learning organization, which posits that participation is driven by owner-managers\u27 learning orientation and the extent of their belief in self-improvement. The implications of the results are discussed in light of the provision of management development programmes. <br /
Meningococcal carriage within households in the African meningitis belt: A longitudinal pilot study.
OBJECTIVES: Carriers of Neisseria meningitidis are a key source of transmission. In the African meningitis belt, where risk of meningococcal disease is highest, a greater understanding of meningococcal carriage dynamics is needed. METHODS: We randomly selected an age-stratified sample of 400 residents from 116 households in Bamako, Mali, and collected pharyngeal swabs in May 2010. A month later, we enrolled all 202 residents of 20 of these households (6 with known carriers) and collected swabs monthly for 6 months prior to MenAfriVac vaccine introduction and returned 10 months later to collect swabs monthly for 3 months. We used standard bacteriological methods to identify N. meningitidis carriers and fit hidden Markov models to assess acquisition and clearance overall and by sex and age. RESULTS: During the cross-sectional study 5.0% of individuals (20/400) were carriers. During the longitudinal study, 73 carriage events were identified from 1422 swabs analyzed, and 16.3% of individuals (33/202) were identified as carriers at least once. The majority of isolates were non-groupable; no serogroup A carriers were identified. CONCLUSIONS: Our results suggest that the duration of carriage with any N. meningitidis averages 2.9 months and that males and children acquire and lose carriage more frequently in an urban setting in Mali. Our study informed the design of a larger study implemented in seven countries of the African meningitis belt
Habitat use affects morphological diversification in dragon lizards
Habitat use may lead to variation in diversity among evolutionary lineages because habitats differ in the variety of ways they allow for species to make a living. Here, we show that structural habitats contribute to differential diversification of limb and body form in dragon lizards (Agamidae). Based on phylogenetic analysis and ancestral state reconstructions for 90 species, we find that multiple lineages have independently adopted each of four habitat use types: rock-dwelling, terrestriality, semi-arboreality and arboreality. Given these reconstructions, we fit models of evolution to species’ morphological trait values and find that rock-dwelling and arboreality limit diversification relative to terrestriality and semi-arboreality. Models preferred by Akaike information criterion infer slower rates of size and shape evolution in lineages inferred to occupy rocks and trees, and model-averaged rate estimates are slowest for these habitat types. These results suggest that ground-dwelling facilitates ecomorphological differentiation and that use of trees or rocks impedes diversification
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