1,015 research outputs found
Does Being Attractive Always Help? Positive and Negative Effects of Attractiveness on Social Decision Making
Previous studies of organizational decision making demonstrate an abundance of positive biases directed toward highly attractive individuals. The current research, in contrast, suggests that when the person being evaluated is of the same sex as the evaluator, attractiveness hurts, rather than helps. Three experiments assessing evaluations of potential job candidates (Studies 1 and 3) and university applicants (Study 2) demonstrated positive biases toward highly attractive other-sex targets but negative biases toward highly attractive same-sex targets. This pattern was mediated by variability in participants’ desire to interact with versus avoid the target individual (Studies 1 and 2) and was moderated by participants’ level of self-esteem (Study 3); the derogation of attractive same-sex targets was not observed among people with high self-esteem. Findings demonstrate an important exception to the positive effects of attractiveness in organizational settings and suggest that negative responses to attractive same-sex targets stem from perceptions of self-threat
Large-Scale Goodness Polarity Lexicons for Community Question Answering
We transfer a key idea from the field of sentiment analysis to a new domain:
community question answering (cQA). The cQA task we are interested in is the
following: given a question and a thread of comments, we want to re-rank the
comments so that the ones that are good answers to the question would be ranked
higher than the bad ones. We notice that good vs. bad comments use specific
vocabulary and that one can often predict the goodness/badness of a comment
even ignoring the question, based on the comment contents only. This leads us
to the idea to build a good/bad polarity lexicon as an analogy to the
positive/negative sentiment polarity lexicons, commonly used in sentiment
analysis. In particular, we use pointwise mutual information in order to build
large-scale goodness polarity lexicons in a semi-supervised manner starting
with a small number of initial seeds. The evaluation results show an
improvement of 0.7 MAP points absolute over a very strong baseline and
state-of-the art performance on SemEval-2016 Task 3.Comment: SIGIR '17, August 07-11, 2017, Shinjuku, Tokyo, Japan; Community
Question Answering; Goodness polarity lexicons; Sentiment Analysi
growth factor enhancement of cardiac regeneration
The potential for endogenous or supplementary stem cells to restore the form and function of damaged tissues is particularly promising for overcoming the restricted regenerative capacity of the mammalian heart. To maintain blood circulation, this essential organ needs to launch a rapid response to repair damage of the muscle wall and to prevent muscle loss. The capacity of growth factors to supplement the repair process has been successfully applied to restore the integrity of damaged skeletal muscle, reducing the fibrotic response to injury, and recruiting local populations of self-renewing precursor cells and circulating stem cells. We review the recent evidence that extension of growth factor supplementation to the heart may overcome its inherent regenerative impediments through improvement of the local tissue environment and stimulation of cell replacement, and we speculate on future research directions for treatment of myocardial damage
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Investigating lupus retention in care to inform interventions for disparities reduction: an observational cohort study.
BACKGROUND:Systemic lupus erythematous (SLE) disproportionately impacts patients of color and socioeconomically disadvantaged patients. Similar disparities in HIV were reduced through a World Health Organization-endorsed Care Continuum strategy targeting "retention in care," defined as having at least two annual visits or viral load lab tests. Using similar definitions, this study aimed to examine predictors of lupus retention in care, to develop an SLE Care Continuum and inform interventions to reduce disparities. We hypothesized that Black patients and those residing in disadvantaged neighborhoods would have lower retention in care. METHODS:Abstractors manually validated 545 potential adult cases with SLE codes in 2013-2014 using 1997 American College of Rheumatology (ACR) or 2012 Systemic Lupus Erythematosus International Collaborating Clinics (SLICC) criteria. We identified 397 SLE patients who met ACR or SLICC criteria for definite lupus, had at least one baseline rheumatology visit, and were alive through 2015. Retention in care was defined as having two ambulatory rheumatology visits or SLE labs (e.g., complement tests) during the outcome year 2015, analogous to HIV retention definitions. Explanatory variables included age, sex, race, ethnicity, smoking status, neighborhood area deprivation index (ADI), number of SLE criteria, and nephritis. We used multivariable logistic regression to test our hypothesis and model predictors of SLE retention in care. RESULTS:Among 397 SLE patients, 91% were female, 56% White, 39% Black, and 5% Hispanic. Notably, 51% of Black versus 5% of White SLE patients resided in the most disadvantaged ADI neighborhood quartile. Overall, 60% met visit-defined retention and 27% met complement lab-defined retention in 2015. Retention was 59% lower for patients in the most disadvantaged neighborhood quartile (adjusted OR 0.41, CI 0.18, 0.93). No statistical difference was seen based on age, sex, race, or ethnicity. More SLE criteria and non-smoking predicted greater retention. CONCLUSIONS:Disadvantaged neighborhood residence was the strongest factor predicting poor SLE retention in care. Future interventions could geo-target disadvantaged neighborhoods and design retention programs with vulnerable populations to improve retention in care and reduce SLE outcome disparities
13. Long Term Care: Medicaid Reimbursement Does High Cost Yield High Quality?
This paper suggests a new focus for government policy in the providing of Medicaid services. To put it simply, the government needs to provide incentives (and sanctions) that make the business of caring for the elderly profitable to proprietary nursing home. Although profit and quality care are strange bedfellows, the government must adapt the Medicaid system to keeping them close (i.e., maintaining a positive relationship between profit and quality care)
Increased cardiogenesis in P19-GFP teratocarcinoma cells expressing the propeptide IGF-1Ea
AbstractThe mechanism implicated in differentiation of endogenous cardiac stem cells into cardiomyocytes to regenerate the heart tissue upon an insult remains elusive, limiting the therapeutical goals to exogenous cell injection and/or gene therapy. We have shown previously that cardiac specific overexpression of the insulin-like growth factor 1 propeptide IGF-1Ea induces beneficial myocardial repair after infarct. Although the mechanism is still under investigation, the possibility that this propeptide may be involved in promoting stem cell differentiation into the cardiac lineage has yet to be explored. To investigate whether IGF-1Ea promote cardiogenesis, we initially modified P19 embryonal carcinoma cells to express IGF-1Ea. Taking advantage of their cardiomyogenic nature, we analyzed whether overexpression of this propeptide affected cardiac differentiation program. The data herein presented showed for the first time that constitutively overexpressed IGF-1Ea increased cardiogenic differentiation program in both undifferentiated and DMSO-differentiated cells. In details, IGF-1Ea overexpression promoted localization of alpha-actinin in finely organized sarcomeric structure compared to control cells and upregulated the cardiac mesodermal marker NKX-2.5 and the ventricular structural protein MLC2v. Furthermore, activated IGF-1 signaling promoted cardiac mesodermal induction in undifferentiated cells independently of cell proliferation. This analysis suggests that IGF-1Ea may be a good candidate to improve both in vitro production of cardiomyocytes from pluripotent stem cells and in vivo activation of the differentiation program of cardiac progenitor cells
Local IGF-1 isoform protects cardiomyocytes from hypertrophic and oxidative stresses via SirT1 activity
Oxidative
and hypertrophic stresses contribute to the pathogenesis of heart failure.
Insulin-like growth factor-1 (IGF-1) is a peptide hormone with a complex
post-transcriptional regulation, generating distinct isoforms. Locally
acting IGF-1 isoform (mIGF-1) helps the heart to recover from toxic injury
and from infarct. In the murine heart, moderate overexpression of the NAD+-dependent
deacetylase SirT1 was reported to mitigate oxidative stress. SirT1 is known
to promote lifespan extension and to protect from metabolic challenges.
Circulating IGF-1 and SirT1 play antagonizing biological roles and share
molecular targets in the heart, in turn affecting cardiomyocyte physiology.
However, how different IGF-1 isoforms may impact SirT1 and affect
cardiomyocyte function is unknown. Here we show that locally acting mIGF-1
increases SirT1 expression/activity, whereas circulating IGF-1 isoform does
not affect it, in cultured HL-1 and neonatal cardiomyocytes. mIGF-1-induced
SirT1 activity exerts protection against angiotensin II (Ang II)-triggered
hypertrophy and against paraquat (PQ) and Ang II-induced oxidative stress.
Conversely, circulating IGF-1 triggered itself oxidative stress and
cardiomyocyte hypertrophy. Interestingly, potent cardio-protective genes
(adiponectin, UCP-1 and MT-2) were increased specifically in
mIGF-1-overexpressing cardiomyocytes, in a SirT1-dependent fashion. Thus,
mIGF-1 protects cardiomyocytes from oxidative and hypertrophic stresses via
SirT1 activity, and may represent a promising cardiac therapeutic
Rho inhibits cAMP-induced translocation of aquaporin-2 into the apical membrane of renal cells
We have recently demonstrated that actin depolymerization is a prerequisite for cAMP-dependent translocation of the water channel aquaporin-2 (AQP2) into the apical membrane in AQP2-transfected renal CD8 cells (29). The Rho family of small GTPases, including Cdc42, Rac, and Rho, regulates the actin cytoskeleton. In AQP2-transfected CD8 cells, inhibition of Rho GTPases with Clostridium difficile toxin B or with C. limosum C3 fusion toxin, as well as incubation with the Rho kinase inhibitor, Y-27632, caused actin depolymerization and translocation of AQP2 in the absence of the cAMP- elevating agent forskolin. Both forskolin and C3 fusion toxin-induced AQP2 translocation were associated with a similar increase in the osmotic water permeability coefficient. Expression of constitutively active RhoA induced formation of stress fibers and abolished AQP2 translocation in response to forskolin. Cytochalasin D induced both depolymerization of F-actin and AQP2 translocation, suggesting that depolymerization of F-actin is sufficient to induce AQP2 translocation. Together, these data indicate that Rho inhibits cAMP-dependent translocation of AQP2 into the apical membrane of renal principal cells by controlling the organization of the actin cytoskeleton
Food Processing Innovation: A Case Study with Pressurized Passion Fruit Juice
Tropical fruit juice production shows an annual increase in volume of 15 to 20% in Brazil. Growing demand for processed fruit pulp arouses juice industry interest to search for novel technologies. High Hydrostatic Pressure (HHP) is an innovative technology which allows juice production with improved sensory characteristics compared to pasteurization, meeting consumer demands for fresh-like foods. Despite recognized advantages of pressurized products described in the literature, a positive consumer attitude towards them is required to guarantee their success in today’s competitive global market. The objective of this study was to evaluate the effect of packaging attributes on consumer expected liking and purchase intention of passion fruit juice. One hundred and twenty consumers evaluated twelve prototypes for expected liking and purchase intention. Data were analyzed using ANOVA, Conjoint and Cluster Analyses. Results showed that information about benefits of used technology (HHP) presented on the package played an important role on consumer attitude, suggesting a positive contribution to his/her satisfaction, a key point for the food industry.Tropical fruit juice production shows an annual increase in volume of 15 to 20% in Brazil. Growing demand for processed fruit pulp arouses juice industry interest to search for novel technologies. High Hydrostatic Pressure (HHP) is an innovative technology which allows juice production with improved sensory characteristics compared to pasteurization, meeting consumer demands for fresh-like foods. Despite recognized advantages of pressurized products described in the literature, a positive consumer attitude towards them is required to guarantee their success in today’s competitive global market. The objective of this study was to evaluate the effect of packaging attributes on consumer expected liking and purchase intention of passion fruit juice. One hundred and twenty consumers evaluated twelve prototypes for expected liking and purchase intention. Data were analyzed using ANOVA, Conjoint and Cluster Analyses. Results showed that information about benefits of used technology (HHP) presented on the package played an important role on consumer attitude, suggesting a positive contribution to his/her satisfaction, a key point for the food industry.Tropical fruit juice production shows an annual increase in volume of 15 to 20% in Brazil. Growing demand for processed fruit pulp arouses juice industry interest to search for novel technologies. High Hydrostatic Pressure (HHP) is an innovative technology which allows juice production with improved sensory characteristics compared to pasteurization, meeting consumer demands for fresh-like foods. Despite recognized advantages of pressurized products described in the literature, a positive consumer attitude towards them is required to guarantee their success in today’s competitive global market. The objective of this study was to evaluate the effect of packaging attributes on consumer expected liking and purchase intention of passion fruit juice. One hundred and twenty consumers evaluated twelve prototypes for expected liking and purchase intention. Data were analyzed using ANOVA, Conjoint and Cluster Analyses. Results showed that information about benefits of used technology (HHP) presented on the package played an important role on consumer attitude, suggesting a positive contribution to his/her satisfaction, a key point for the food industry
Effects of a brief mindfulness meditation practice on Pavlovian-to-instrumental transfer in alcohol use disorder – a pilot study
IntroductionPavlovian conditioned contextual cues have been suggested to modulate instrumental action and might explain maladaptive behavior such as relapse in participants suffering from alcohol use disorder (AUD). Pavlovian-to-Instrumental transfer (PIT) experimentally assesses the magnitude of this context-dependent effect and studies have shown a larger PIT effect in AUD populations. Taken this into account, a reduction of the influence of cues on behavior seems warranted and one approach that could alter such cue reactivity is mindfulness. Mindfulness-based interventions have been shown to be efficient in the treatment of AUD, but underlying mechanisms are yet to be elucidated. Therefore, we aim at investigating the effect of a brief mindful body scan meditation on the magnitude of the PIT effect in AUD subjects and matched controls.MethodsUsing a randomized within-subjects design, we compared the effect of a short audio guided body scan meditation against a control condition (audio of nature sounds) on PIT in healthy (n = 35) and AUD (n = 27) participants.ResultsWe found no differences in PIT effect between healthy and AUD participants as well as between conditions. However, a significant interaction effect points to a decreased PIT effect after body scan meditation in AUD subjects only.DiscussionThese pilot results suggest that AUD might be susceptible to mindfulness-induced changes in PIT, with these findings contributing to entangling the underlying mechanisms of the efficacy of mindfulness-based interventions in AUD. However, further investigation should confirm these preliminary results and the efficacy of mindfulness meditation practice in decreasing the PIT effect
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