411 research outputs found
What outcomes have mindfulness and meditation interventions for managers and leaders achieved? A systematic review
No systematic review had previously been conducted examining the benefits mindfulness or meditation interventions for leaders and managers. However, the literature suggested that such interventions would have a positive impact on leadersâ own well-being, their leadership capability, their âpost-conventionalâ leadership capacity, and their direct reports. The purpose of this study was therefore to systematically review research on mindfulness or meditation interventions for managers and leaders. Our review identified 19 studies that met the inclusion criteria. Findings indicate some encouraging signs that mindfulness and meditation interventions may improve aspects of leadersâ/managersâ well-being and resilience, and leadership capability, possibly including their âpost-conventionalâ leadership, but research results are very variable in quality and strength, and there was no evidence on benefits for participantsâ direct reports. The studies reviewed explored a diversity of interventions, but provided little insight into which mindfulness and meditation interventions for managers and leaders are most effective, in what context they are best applied, or for whom they are most suitable. While the sub-set of studies that measured mindfulness found that the interventions used did increase participantsâ mindfulness, there was no exploration of whether improved mindfulness was the mechanism by which other positive outcomes were achieved
Huntingtin CAG repeat expansions in induced pluripotent stem cell models of Huntingtonâs Disease
Huntingtonâs disease (HD) is an autosomal dominant neurodegenerative disorder caused by the expansion of a CAG repeat in the huntingtin gene, HTT. The length of the CAG repeat is inversely correlated with age at motor onset, but other factors influence onset including genetic variation elsewhere in the genome. Recent genome-wide association studies have identified genetic variants in the vicinity of FAN1, a nuclease involved in DNA interstrand cross-link repair, as modifiers of age at onset of HD. It is thought that FAN1 might modify age at onset through direct modulation of the expanded HTT CAG repeat. Further expansions of the CAG repeat in post-mitotic neurons are thought to accelerate disease-onset and therefore factors that license or inhibit expansions represent therapeutic targets.
This thesis demonstrates that HD-iPSC lines with expanded CAG repeat tracts of >100 CAG repeats (Q109) exhibit repeat instability in culture, with the repeat tract undergoing further expansions in pluripotent cells and upon neuronal differentiation. These cell lines therefore represent a cellular model of repeat expansion which can be utilised to characterise how DNA repair genes affect cells harbouring expanded CAG repeats. Employing CRISPR-Cas9 and a piggyBac transposon-based homologous recombination approach the expanded HTT CAG repeat tract was genetically corrected to a wild-type repeat length of 22 HTT CAGs (Q22). Corrected HD-iPSCs retained pluripotency and differentiation potential. Additionally, metabolic deficits in Q109 neural progenitor cells were rescued in Q22 neural progenitor cells.
This thesis also aimed to establish the effect of FAN1 on HTT CAG repeat expansions. Using CRISPRCas9, FAN1 was knocked-out of an isogenic pair of HD-iPSCs containing either 22 or >100 HTT CAG repeats. FAN1-/- clones were significantly more susceptible to interstrand cross-linking agent MMC, indicative of defective interstrand cross-link repair. Increased CAG repeat expansion was observed in FAN1-/- iPSCs and iPSC-derived neurons, suggestive of a protective role of FAN1 against CAG repeat expansions.
These novel model systems provide a platform for investigating the cellular phenotypes associated with expanded CAG repeats, and the effects of DNA-repair associated genetic modifiers
Interpersonal mindfulness in leadership development: a Delphi study
Mindfulness is increasingly being used within leadership development to enhance managersâ wellbeing and leadership capability. Given the relational nature of leadership, we posit that an interpersonal form of mindfulness has the potential to offer benefits over and above those provided by personal or internal mindfulness. We therefore chose a Delphi research methodology to consult and achieve consensus among expert practitioners, exploring if and how interpersonal mindfulness, in the specific form of the Interpersonal Mindfulness Program (IMP), can contribute to leadership development. Our aims were, firstly, to identify the necessary components of an IMP-based leadership development program and, secondly, to create guidelines for practitioners. Through four phases of data-gathering and feedback, we achieved consensus among 39 experts on guidelines for how to develop a leadership development program based on the IMP, contextual factors that will act as facilitators or barriers, and selection and screening of participants. The intention is that the resulting guidelines will support the implementation of coherent, consistent IMP-based leadership development, sensitive both to its origins and to the context
Which family members use the best nets? An analysis of the condition of mosquito nets and their distribution within households in Tanzania
BACKGROUND: Household ownership of insecticide-treated mosquito nets (ITNs) is increasing, and coverage targets have been revised to address universal coverage with ITNs. However, many households do not have enough nets to cover everyone, and the nets available vary in physical condition and insecticide treatment status. Since 2004, the Government of Tanzania has been implementing the Tanzania National Voucher Scheme (TNVS), which distributes vouchers for ITNs through antenatal clinics to target pregnant women and their infants. This analysis aimed to determine the following: (1) coverage patterns of bed nets within households according to physical condition and treatment status; (2) who might be at risk if mosquitoes were diverted from occupants of untreated nets to those not using nets? (3) the degree to which those at highest risk of malaria use the most protective nets. METHODS: Data from the 2006 TNVS household survey were analysed to assess within-household distribution of net use. The associations between net characteristics and net user were also evaluated. Multivariate analysis was applied to the relationship between the number of holes per net and user characteristics while adjusting for confounders. RESULTS: In households with a net:person ratio better than 1:4 (one net for every four household members), more than 80% of the people in such households reported using a net the previous night. ITNs were most likely to be used by infants, young children (1-4 y), and women of childbearing age; they were least likely to be used by older women (>or=50 y), older children (5-14 y), and adult men. The nets used by infants and women of childbearing age were in better-than-average physical condition; the nets used by older women and older children were in worse-than-average condition; while young children and adult men used nets in intermediate (average) condition. When adjusted for confounders, the nets used by young and older children had more holes than nets used by infants. CONCLUSIONS: Infants and other vulnerable groups were most likely to sleep under the most protective nets. Nevertheless, more communication efforts are needed to increase use of intact ITNs within households for children. Further research is necessary to fully understand motivations influencing within-household net distribution
Rabbits, stoats and the predator problem: Why a strong animal rights position need not call for human intervention to protect prey from predators
Animal rights positions face the âpredator problemâ: the suggestion that if the rights of nonhuman animals are to be protected, then we are obliged to interfere in natural ecosystems to protect prey from predators. Generally, rather than embracing this conclusion, animal ethicists have rejected it, basing this objection on a number of different arguments. This paper considers but challenges three such arguments, before defending a fourth possibility. Rejected are Peter Singerâs suggestion that interference will lead to more harm than good, Sue Donaldson and Will Kymlickaâs suggestion that respect for nonhuman sovereignty necessitates non-interference in normal circumstances, and Alasdair Cochraneâs solution based on the claim that predators cannot survive without killing prey. The possibility defended builds upon Tom Reganâs suggestion that predators, as moral patients but not moral agents, cannot violate the rights of their prey, and so the rights of the prey, while they do exist, do not call for intervention. This idea is developed by a consideration of how moral agents can be more or less responsible for a given event, and defended against criticisms offered by thinkers including Alasdair Cochrane and Dale Jamieson
The prevalence of pain and disability one year post fracture of the distal radius in a UK population: A cross sectional survey
<p>Abstract</p> <p>Background</p> <p>A fracture of the distal radius is a commonly occurring fracture and accounts for a third of all fractures in the elderly. Thus far, one year estimates of pain and disability following a fracture of the distal radius have been reported on Canadian populations. The primary aim of this study is to investigate the prevalence of pain and disability in a UK population one year post fracture of the distal radius.</p> <p>Methods</p> <p>A cross-sectional survey was undertaken, of all subjects suffering a fracture of the distal radius between October 2005 and February 2006 in Nottingham, UK. Primary outcomes used were the VAS for pain and the DASH for disability. Prevalence of pain and disability were calculated and odds ratios presented for associations between demographics, pain and disability.</p> <p>Results</p> <p>93/264 (35%) subjects responded to the questionnaire. 6 subjects did not fulfill the inclusion criteria and were excluded from further analysis. 11% of subjects reported moderate to very severe pain. 16% of subjects reported moderate to very severe disability. Statistically significant associations were found between pain medication usage for the wrist fracture and moderate to very severe pain (OR 11.20, 95% CI 2.05 â 61.23). Moderate to very severe disability was associated with older age (OR 6.53, 95%CI 1.65 â 25.90) and pain medication usage for the wrist fracture (OR 4.75, 95% CI 1.38 â 16.37). Working was associated with a reduction in risk of moderate to very severe disability (OR 0.14, 95% CI 0.03 â 0.67).</p> <p>Conclusion</p> <p>This study demonstrates that there are a small proportion of patients who are still suffering moderate to very severe pain and disability one year post fracture of the distal radius. The study also demonstrates that there are significant associations between characteristics of the patients and the level of pain and disability. This highlights the need for further research into the most appropriate management of these patients in order to reduce this burden of pain and disability, particularly as this is a predominantly elderly patient group.</p
Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
Background
Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy
The impact of patient self assessment of deformity on HRQL in adults with scoliosis
Background: Body image and HRQL are significant issues for patients with scoliosis due to cosmetic deformity, physical and psychological symptoms, and treatment factors. A selective review of scoliosis literature revealed that self report measures of body image and HRQL share unreliable correlations with radiographic measures and clinician recommendations for surgery. However, current body image and HRQL measures do not indicate which aspects of scoliosis deformity are the most distressing for patients. The WRVAS is an instrument designed to evaluate patient self assessment of deformity, and may show some promise in identifying aspects of deformity most troubling to patients. Previous research on adolescents with scoliosis supports the use of the WRVAS as a clinical tool, as the instrument shares strong correlations with radiographic measures and quality of life instruments. There has been limited use of this instrument on adult populations. Methods: The WRVAS and the SF-36v2, a HRQL measure, were administered to 71 adults with scoliosis, along with a form to report age and gender. Preliminary validation analyses were performed on the WRVAS (floor and ceiling effects, internal consistency and collinearity, correlations with the SF-36v2, and multiple regression with the WRVAS total score as the predictor, and SF-36v2 scores as outcomes). Results: The psychometric properties of the WRVAS were acceptable. Older participants perceived their deformities as more severe than younger participants. More severe deformities were associated with lower scores on the Physical Component Summary Score of the SF-36v2. Total WRVAS score also predicted Physical Component Summary scores. Conclusion: The results of the current study indicate that the WRVAS is a reliable tool to use with adult patients, and that patient self assessment of deformity shared a relationship with physical rather than psychological aspects of HRQL. The current and previous studies concur that revision of the WRVAS is necessary to more accurately represent the diversity of scoliosis deformities. Ability to identify disturbing aspects of deformity could potentially be improved by evaluating each WRVAS items against indicators of pain, physical/psychosocial function, and self image from previous measures such as the SRS, SF-36 or BSSQ-deformity
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