170 research outputs found
Loving-kindness meditation: a tool to improve healthcare provider compassion, resilience, and patient care
Background:
Stress is a critical problem facing many healthcare institutions. The consequences of stress include increased provider burnout and decreased quality of care for patients. Ironically, a key factor that may help buffer the impact of stress on provider well-being and patient health outcomes—compassion—is low in healthcare settings and declines under stress. This gives rise to an urgent question: what practical steps can be taken to increase compassion, thereby benefitting both provider well-being and patient care?
Methods:
We investigated the relative effectiveness of a short, 10-minute session of loving-kindness meditation (LKM) to increase compassion and positive affect. We compared LKM to a non-compassion positive affect induction (PAI) and a neutral visualization (NEU) condition. Self- and other-focused affect, self-reported measures of social connection, and semi-implicit measures of self-focus were measured pre- and post- meditation using repeated measures ANOVAs and via paired sample t-tests for follow-up comparisons.
Results:
Findings show that LKM improves well-being and feelings of connection over and above other positive-affect inductions, at both explicit and implicit levels, while decreasing self-focus in under 10 minutes and in novice meditators.
Conclusions:
These findings suggest that LKM may be a viable, practical, and time-effective solution for preventing burnout and promoting resilience in healthcare providers and for improving quality of care in patients
Allelic expression analysis of the osteoarthritis susceptibility locus that maps to MICAL3
<p>Abstract</p> <p>Background</p> <p>A genome-wide association scan with subsequent replication study that involved over 67,000 individuals of European ancestry has produced evidence of association of single nucleotide polymorphism rs2277831 to primary osteoarthritis (OA) with a P-value of 2.9 × 10<sup>-5</sup>. rs2277831, an A/G transition, is located in an intron of <it>MICAL3</it>. This gene is located on chromosome 22q11.21 and the association signal encompasses two additional genes, <it>BCL2L13 </it>and <it>BID</it>. It is becoming increasingly apparent that many common complex traits are mediated by <it>cis</it>-acting regulatory polymorphisms that influence, in a tissue-specific manner, gene expression or transcript stability.</p> <p>Methods</p> <p>We used total and allelic expression analysis to assess whether the OA association to rs2277831 is mediated by an influence on MICAL3, BCL2L13 or BID expression. Using RNA extracted from joint tissues of 60 patients who had undergone elective joint replacement surgery, we assessed whether rs2277831 correlated with allelic expression of either of the three genes by: 1) measuring the expression of each gene by quantitative PCR and then stratifying the data by genotype at rs2277831 and 2) accurately discriminating and quantifying the mRNA synthesised from the alleles of OA patients using allelic-quantitative PCR.</p> <p>Results</p> <p>We found no evidence for a correlation between gene expression and genotype at rs2277831, with P-values of 0.09 for <it>BCL2L13</it>, 0.07 for <it>BID </it>and 0.33 for <it>MICAL3</it>. In the allelic expression analysis we observed several examples of significant (p < 0.05) allelic imbalances, with an allelic expression ratio of 2.82 observed in <it>BCL2L13 </it>(P = 0.004), 2.09 at <it>BID </it>(P = 0.001) and the most extreme case being at <it>MICAL3</it>, with an allelic expression ratio of 5.47 (P = 0.001). However, there was no correlation observed between the pattern of allelic expression and the genotype at rs2277831.</p> <p>Conclusions</p> <p>In the tissues that we have studied, our data do not support our hypothesis that the association between rs2277831 and OA is due to the effect this SNP has on <it>MICAL3, BCL2L13 </it>or <it>BID </it>gene expression. Instead, our data point towards other functional effects accounting for the OA associated signal.</p
Mitochondrial complex 1 activity measured by spectrophotometry is reduced across all brain regions in ageing and more specifically in neurodegeneration
Mitochondrial function, in particular complex 1 of the electron transport chain (ETC), has been shown to decrease during normal ageing and in neurodegenerative disease. However, there is some debate concerning which area of the brain has the greatest complex 1 activity. It is important to identify the pattern of activity in order to be able to gauge the effect of age or disease related changes. We determined complex 1 activity spectrophotometrically in the cortex, brainstem and cerebellum of middle aged mice (70–71 weeks), a cerebellar ataxic neurodegeneration model (pcd5J) and young wild type controls. We share our updated protocol on the measurements of complex1 activity and find that mitochondrial fractions isolated from frozen tissues can be measured for robust activity. We show that complex 1 activity is clearly highest in the cortex when compared with brainstem and cerebellum (p<0.003). Cerebellum and brainstem mitochondria exhibit similar levels of complex 1 activity in wild type brains. In the aged brain we see similar levels of complex 1 activity in all three-brain regions. The specific activity of complex 1 measured in the aged cortex is significantly decreased when compared with controls (p<0.0001). Both the cerebellum and brainstem mitochondria also show significantly reduced activity with ageing (p<0.05). The mouse model of ataxia predictably has a lower complex 1 activity in the cerebellum, and although reductions are measured in the cortex and brain stem, the remaining activity is higher than in the aged brains. We present clear evidence that complex 1 activity decreases across the brain with age and much more specifically in the cerebellum of the pcd5j mouse. Mitochondrial impairment can be a region specific phenomenon in disease, but in ageing appears to affect the entire brain, abolishing the pattern of higher activity in cortical regions
Measuring temporal, spectral and spatial changes in electrophysiological brain network connectivity
The topic of functional connectivity in neuroimaging is expanding rapidly and many studies now focus on coupling between spatially separate brain regions. These studies show that a relatively small number of large scale networks exist within the brain, and that healthy function of these networks is disrupted in many clinical populations. To date, the vast majority of studies probing connectivity employ techniques that compute time averaged correlation over several minutes, and between specific pre-defined brain locations. However, increasing evidence suggests that functional connectivity is non-stationary in time. Further, electrophysiological measurements show that connectivity is dependent on the frequency band of neural oscillations. It is also conceivable that networks exhibit a degree of spatial inhomogeneity, i.e. the large scale networks that we observe may result from the time average of multiple transiently synchronised sub-networks, each with their own spatial signature. This means that the next generation of neuroimaging tools to compute functional connectivity must account for spatial inhomogeneity, spectral non-uniformity and temporal non-stationarity. Here, we present a means to achieve this via application of windowed canonical correlation analysis (CCA) to source space projected MEG data. We describe the generation of time–frequency connectivity plots, showing the temporal and spectral distribution of coupling between brain regions. Moreover, CCA over voxels provides a means to assess spatial non-uniformity within short time–frequency windows. The feasibility of this technique is demonstrated in simulation and in a resting state MEG experiment where we elucidate multiple distinct spatio-temporal-spectral modes of covariation between the left and right sensorimotor areas
Physical Activity Patterns of the Spanish Population Are Mostly Determined by Sex and Age: Findings in the ANIBES Study
Background
Representative data for the Spanish population regarding physical activity (PA) behaviors
are scarce and seldom comparable due to methodological inconsistencies.
Aim
Our objectives were to describe the PA behavior by means of the standardized self-reported
International Physical Activity Questionnaire (IPAQ) and to know the proportion of the Spanish
population meeting and not meeting international PA recommendations.
Material and Methods
PA was assessed using the IPAQ in a representative sample of 2285 individuals (males,
50.4%) aged 9–75 years and living in municipalities of at least 2,000 inhabitants. Data were
analyzed according to: age groups 9–12, 13–17, 18–64, and 65–75 years; sex; geographical
distribution; locality size and educational levels.
Results
Mean total PA was 868.8±660.9 min/wk, mean vigorous PA 146.4±254.1 min/wk, and mean
moderate PA 398.1±408.0 min/wk, showing significant differences between sexes
(p<0.05). Children performed higher moderate-vigorous PA than adolescents and seniors
(p<0.05), and adults than adolescents and seniors (p<0.05). Compared to recommendations,
36.2%of adults performed <150 min/week of moderate PA, 65.4% <75 min/week of vigorous PA and 27.0%did not perform any PA at all, presenting significant differences
between sexes (p<0.05). A total of 55.4%of children and adolescents performed less than
420 min/week of MVPA, being higher in the later (62.6%) than in the former (48.4%). Highest
non-compliance was observed in adolescent females (86.5%).
Conclusion
Sex and age are the main influencing factors on PA in the Spanish population. Males
engage in more vigorous and light PA overall, whereas females perform more moderate
PA. PA behavior differs between age groups and no clear lineal increase with age could be
observed. Twenty-seven percent of adults and 55.4% of children and adolescents do not
meet international PA recommendations. Identified target groups should be addressed to
increase PA in the Spanish populationCoca-Cola Iberia through Spanish Nutrition Foundation (FEN)Coca-Cola Iberi
Sedentary behavior among Spanish children and adolescents: findings from the ANIBES study
Background: An increase of sedentary behaviors far from the Mediterranean lifestyle is happening in spite of the
impact on health. The aims of this study were to describe sedentary behaviors in children and adolescents.
Methods: A representative sample of 424 Spanish children and adolescents (38% females) involved in the ANIBES
study was analyzed regarding their sedentary behaviors, together with the availability of televisions, computers, and
consoles by means of the HELENA sedentary behavior questionnaire.
Results: For the total sample of children, 49.3% during weekdays and 84% during weekends did not meet the
recommendation of less than 2 hours of screen viewing per day. The use of TV was higher during weekdays
(p < 0.05) and there were significant differences between adolescents and children (16.9 vs. 25.1%, p < 0.05). The use
of computer, console games and of internet for non-study reasons was higher during weekends (p < 0.001).
Adolescents played more computer games and used more internet for non-study reasons than children during
both weekdays and weekends (p < 0.05 and p < 0.001, respectively). The use of internet for academic reasons was
lower in children (p < 0.001) than adolescents during weekends; however, no significant differences were found
between sexes. In addition, more than 30% of the children and adolescents had at least one electronic device in
their bedrooms.
Conclusions: Spanish children and adolescents are not meeting the recommendations regarding the maximum of
screen viewing (<2 h/day), especially during the weekend, for all of sedentary behaviors. Urgent strategies and
intervention studies are needed to reduce sedentary behavior in young people.The ANIBES study was financially supported by a grant from Coca-Cola Iberia
through an agreement with the Spanish Nutrition Foundation (FEN). The
funding sponsors had no role in the design of the study, in the collection,
analyses, or interpretation of the data; in the writing of the manuscript, and
in the decision to publish the results
Breakfast habits and factors influencing food choices at breakfast in relation to socio-demographic and family factors among European adolescents. The HELENA Study §
A B S T R A C T Breakfast consumption has been shown to be an important indicator of a healthy lifestyle. Little is known however about factors influencing breakfast consumption and food choices at breakfast in adolescents. The aim of the present study was therefore to describe breakfast habits, and factors influencing food choices at breakfast within the framework of the EU-funded HELENA Study, in 3528 adolescents from ten European cities. Additionally, socio-demographic differences in breakfast habits and in influencing factors were investigated. Half of the adolescents (and fewer girls than boys) indicated being regular breakfast consumers. Girls with mothers with a high level of education, boys from 'traditional' families and boys who perceived low family affluence were positively associated with breakfast consumption. Boys whose parents gave encouragement and girls whose peers ate healthily were more likely to be regular breakfast consumers. 'Hunger', 'taste', 'health concerns' and 'parents or guardian' were the most important influences on the adolescents' food choices at breakfast. Adolescents from southern Europe and girls reported to be more influenced by personal and socio-environmental factors. Sociodemographic differences, in particular regional and gender differences, need to be considered in discussions surrounding the development of nutritional intervention programs intended for adolescents.
Global wealth disparities drive adherence to COVID-safe pathways in head and neck cancer surgery
Peer reviewe
Large scale multifactorial likelihood quantitative analysis of BRCA1 and BRCA2 variants: An ENIGMA resource to support clinical variant classification
The multifactorial likelihood analysis method has demonstrated utility for quantitative assessment of variant pathogenicity for multiple cancer syndrome genes. Independent data types currently incorporated in the model for assessing BRCA1 and BRCA2 variants include clinically calibrated prior probability of pathogenicity based on variant location and bioinformatic prediction of variant effect, co-segregation, family cancer history profile, co-occurrence with a pathogenic variant in the same gene, breast tumor pathology, and case-control information. Research and clinical data for multifactorial likelihood analysis were collated for 1,395 BRCA1/2 predominantly intronic and missense variants, enabling classification based on posterior probability of pathogenicity for 734 variants: 447 variants were classified as (likely) benign, and 94 as (likely) pathogenic; and 248 classifications were new or considerably altered relative to ClinVar submissions. Classifications were compared with information not yet included in the likelihood model, and evidence strengths aligned to those recommended for ACMG/AMP classification codes. Altered mRNA splicing or function relative to known nonpathogenic variant controls were moderately to strongly predictive of variant pathogenicity. Variant absence in population datasets provided supporting evidence for variant pathogenicity. These findings have direct relevance for BRCA1 and BRCA2 variant evaluation, and justify the need for gene-specific calibration of evidence types used for variant classification
New genetic loci link adipose and insulin biology to body fat distribution.
Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms
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