300 research outputs found
The nature of wisdom:People's connection to nature reflects a deep understanding of life
This paper shows that wise young adults formulate phenomenological intuitions about their relationship to nature that contain many references to advanced modern conceptions of life and âcore cognitionâ. Enactive cognition â summarized as âbeing by doingâ, focuses on a living agentâs ability to remain alive through the selection of proper âbehaviorsâ from the set of coping and co-creating behaviors. Co-creating agents satisfy their immediate needs while improving the quality of the environment on which their need satisfaction depends. They contribute to a thriving environment in which long-term need satisfaction is greatly facilitated. We refer to this skill as âagent adequacyâ that we associate with wisdom. Inadequate agents continually cope with need satisfaction. They might end up in a âcoping trapâ where their coping strategies gradually degrade the habitat on which their long-term viability depends. In doing so, they lock themselves in an endless cycle of marginal need satisfaction. We propose concise and precise formulations of three fundamental concepts of the agent-environment relation: adequacy (the ability to satisfy needs in the short and long term), connectedness (referring to a personal bond with other agents or nature as a whole that is experienced as mutual), and beauty (that derives from the environmentâs ability to produce fragile perfection that is a measure of environmental quality). Analysis of our interviews showed that our (rather wise) group of respondents addressed all three fundamental concepts. We conclude that our theoretically derived agent-environment framework is exemplified by the human-nature relation
The nature of wisdom:People's connection to nature reflects a deep understanding of life
This paper shows that wise young adults formulate phenomenological intuitions about their relationship to nature that contain many references to advanced modern conceptions of life and âcore cognitionâ. Enactive cognition â summarized as âbeing by doingâ, focuses on a living agentâs ability to remain alive through the selection of proper âbehaviorsâ from the set of coping and co-creating behaviors. Co-creating agents satisfy their immediate needs while improving the quality of the environment on which their need satisfaction depends. They contribute to a thriving environment in which long-term need satisfaction is greatly facilitated. We refer to this skill as âagent adequacyâ that we associate with wisdom. Inadequate agents continually cope with need satisfaction. They might end up in a âcoping trapâ where their coping strategies gradually degrade the habitat on which their long-term viability depends. In doing so, they lock themselves in an endless cycle of marginal need satisfaction. We propose concise and precise formulations of three fundamental concepts of the agent-environment relation: adequacy (the ability to satisfy needs in the short and long term), connectedness (referring to a personal bond with other agents or nature as a whole that is experienced as mutual), and beauty (that derives from the environmentâs ability to produce fragile perfection that is a measure of environmental quality). Analysis of our interviews showed that our (rather wise) group of respondents addressed all three fundamental concepts. We conclude that our theoretically derived agent-environment framework is exemplified by the human-nature relation.</p
Enhanced macrophage tribbles-1 expression in murine experimental atherosclerosis.
Development of the atherosclerotic plaque involves a complex interplay between a number of cell types and an extensive inter-cellular communication via cell bound as well as soluble mediators. The family of tribbles proteins has recently been identified as novel controllers of pro-inflammatory signal transduction. The objective of this study was to address the expression pattern of all three tribbles proteins in atherosclerotic plaques from a mouse model of atherosclerosis. Each tribbles were expressed in vascular smooth muscle cells, endothelial cells as well as in resident macrophages of mouse atherosclerotic plaques. The role of IL-1 mediated inflammatory events in controlling tribbles expression was also addressed by inducing experimental atherosclerosis in ApoE-/-IL1R1-/- (double knockout) mice. Immunohistochemical analysis of these mice showed a selective decrease in the percentage of trb-1 expressing macrophages, compared to the ApoE-/- cohort (14.7% ± 1.55 vs. 26.3% ± 1.19). The biological significance of this finding was verified in vitro where overexpression of trb-1 in macrophages led to a significant attenuation (~70%) of IL-6 production as well as a suppressed IL-12 expression induced by a proinflammatory stimulus. In this in vitro setting, expression of truncated trb-1 mutants suggests that the kinase domain of this protein is sufficient to exert this inhibitory action
In vivo imaging of Aminopeptidase N (CD13) receptors in experimental renal tumors using the novel radiotracer 68Ga-NOTA-c(NGR)
Purpose: Aminopeptidase N (APN/CD13) plays an important role in tumor neoangiogenic process and the
development of metastases. Furthermore, it may serve as a potential target for cancer diagnosis and therapy.
Previous studies have already shown that asparagineâglycineâarginine (NGR) peptides specifically
bind to APN/CD13. The aim of the study was to synthesize and investigate the APN/CD13 specificity of
a novel 68Ga-labeled NOTA-c(NGR) molecule in vivo using miniPET.
Methods: c[KNGRE]-NH2 peptide was conjugated with p-SCN-Bn-NOTA and was labeled with Ga-68
(68Ga-NOTA-c(NGR)). Orthotopic and heterotopic transplanted mesoblastic nephroma (NeDe) bearing
Fischer-344 rats were prepared, on which biodistribution studies and miniPET scans were performed
for both 68Ga-NOTA-c(NGR) and amb3 integrin selective 68Ga-NODAGA-[c(RGD)]2 tracers. APN/CD13
receptor expression of NeDe tumors and metastases was analyzed by western blot.
Results: 68Ga-NOTA-c(NGR) was produced with high specific activity (5.13â5.92 GBq/lmol) and with
excellent radiochemical purity (95%<), at all cases. Biodistribution studies in normal rats showed that
uptake of the 68Ga-NOTA-c(NGR) was significantly (p 6 0.05) lower in abdominal organs in comparison
with 68Ga-NODAGA-[c(RGD)]2. Both radiotracers were mainly excreted from the kidney. In NeDe tumor
bearing rats higher 68Ga-NOTA-c(NGR) accumulation was found in the tumors than that of the 68Ga-NODAGA-[
c(RGD)]2. Using orthotopic transplantation, metastases were developed which showed specific
68Ga-NOTA-c(NGR) uptake. Western blot analysis confirmed the presence of APN/CD13 expression in
NeDe tumors and metastases
Sodium ion interactions with aqueous glucose: Insights from quantum mechanics, molecular dynamics, and experiment
In the last several decades, significant efforts have been conducted to understand the fundamental reactivity of glucose derived from plant biomass in various chemical environments for conversion to renewable fuels and chemicals. For reactions of glucose in water, it is known that inorganic salts naturally present in biomass alter the product distribution in various deconstruction processes. However, the molecular-level interactions of alkali metal ions and glucose are unknown. These interactions are of physiological interest as well, for example, as they relate to cation-glucose cotransport. Here, we employ quantum mechanics (QM) to understand the interaction of a prevalent alkali metal, sodium, with glucose from a structural and thermodynamic perspective. The effect on B-glucose is subtle: a sodium ion perturbs bond lengths and atomic partial charges less than rotating a hydroxymethyl group. In contrast, the presence of a sodium ion significantly perturbs the partial charges of ñ-glucose anomeric and ring oxygens. Molecular dynamics (MD) simulations provide dynamic sampling in explicit water, and both the QM and the MD results show that sodium ions associate at many positions with respect to glucose with reasonably equivalent propensity. This promiscuous binding nature of Na + suggests that computational studies of glucose reactions in the presence of inorganic salts need to ensure thorough sampling of the cation positions, in addition to sampling glucose rotamers. The effect of NaCl on the relative populations of the anomers is experimentally quantified with light polarimetry. These results support the computational findings that Na + interacts similarly with a- and B-glucose
Molybdenum-Based Polyoxometalates as Highly Active and Selective Catalysts for the Epimerization of Aldoses
The Immunosuppressant FTY720 (Fingolimod) enhances Glycosaminoglycan depletion in articular cartilage
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Physical, cognitive, and mental health impacts of COVID-19 after hospitalisation (PHOSP-COVID): a UK multicentre, prospective cohort study
Background: The impact of COVID-19 on physical and mental health and employment after hospitalisation with acute disease is not well understood. The aim of this study was to determine the effects of COVID-19-related hospitalisation on health and employment, to identify factors associated with recovery, and to describe recovery phenotypes. Methods: The Post-hospitalisation COVID-19 study (PHOSP-COVID) is a multicentre, long-term follow-up study of adults (aged â„18 years) discharged from hospital in the UK with a clinical diagnosis of COVID-19, involving an assessment between 2 and 7 months after discharge, including detailed recording of symptoms, and physiological and biochemical testing. Multivariable logistic regression was done for the primary outcome of patient-perceived recovery, with age, sex, ethnicity, body-mass index, comorbidities, and severity of acute illness as covariates. A post-hoc cluster analysis of outcomes for breathlessness, fatigue, mental health, cognitive impairment, and physical performance was done using the clustering large applications k-medoids approach. The study is registered on the ISRCTN Registry (ISRCTN10980107). Findings: We report findings for 1077 patients discharged from hospital between March 5 and Nov 30, 2020, who underwent assessment at a median of 5·9 months (IQR 4·9â6·5) after discharge. Participants had a mean age of 58 years (SD 13); 384 (36%) were female, 710 (69%) were of white ethnicity, 288 (27%) had received mechanical ventilation, and 540 (50%) had at least two comorbidities. At follow-up, only 239 (29%) of 830 participants felt fully recovered, 158 (20%) of 806 had a new disability (assessed by the Washington Group Short Set on Functioning), and 124 (19%) of 641 experienced a health-related change in occupation. Factors associated with not recovering were female sex, middle age (40â59 years), two or more comorbidities, and more severe acute illness. The magnitude of the persistent health burden was substantial but only weakly associated with the severity of acute illness. Four clusters were identified with different severities of mental and physical health impairment (n=767): very severe (131 patients, 17%), severe (159, 21%), moderate along with cognitive impairment (127, 17%), and mild (350, 46%). Of the outcomes used in the cluster analysis, all were closely related except for cognitive impairment. Three (3%) of 113 patients in the very severe cluster, nine (7%) of 129 in the severe cluster, 36 (36%) of 99 in the moderate cluster, and 114 (43%) of 267 in the mild cluster reported feeling fully recovered. Persistently elevated serum C-reactive protein was positively associated with cluster severity. Interpretation: We identified factors related to not recovering after hospital admission with COVID-19 at 6 months after discharge (eg, female sex, middle age, two or more comorbidities, and more acute severe illness), and four different recovery phenotypes. The severity of physical and mental health impairments were closely related, whereas cognitive health impairments were independent. In clinical care, a proactive approach is needed across the acute severity spectrum, with interdisciplinary working, wide access to COVID-19 holistic clinical services, and the potential to stratify care. Funding: UK Research and Innovation and National Institute for Health Research.UK Research and Innovation and National Institute for Health Research
A novel formulation of inhaled sodium cromoglicate (PA101) in idiopathic pulmonary fibrosis and chronic cough: a randomised, double-blind, proof-of-concept, phase 2 trial
Background Cough can be a debilitating symptom of idiopathic pulmonary fibrosis (IPF) and is difficult to treat. PA101 is a novel formulation of sodium cromoglicate delivered via a high-efficiency eFlow nebuliser that achieves significantly higher drug deposition in the lung compared with the existing formulations. We aimed to test the efficacy and safety of inhaled PA101 in patients with IPF and chronic cough and, to explore the antitussive mechanism of PA101, patients with chronic idiopathic cough (CIC) were also studied. Methods This pilot, proof-of-concept study consisted of a randomised, double-blind, placebo-controlled trial in patients with IPF and chronic cough and a parallel study of similar design in patients with CIC. Participants with IPF and chronic cough recruited from seven centres in the UK and the Netherlands were randomly assigned (1:1, using a computer-generated randomisation schedule) by site staff to receive PA101 (40 mg) or matching placebo three times a day via oral inhalation for 2 weeks, followed by a 2 week washout, and then crossed over to the other arm. Study participants, investigators, study staff, and the sponsor were masked to group assignment until all participants had completed the study. The primary efficacy endpoint was change from baseline in objective daytime cough frequency (from 24 h acoustic recording, Leicester Cough Monitor). The primary efficacy analysis included all participants who received at least one dose of study drug and had at least one post-baseline efficacy measurement. Safety analysis included all those who took at least one dose of study drug. In the second cohort, participants with CIC were randomly assigned in a study across four centres with similar design and endpoints. The study was registered with ClinicalTrials.gov (NCT02412020) and the EU Clinical Trials Register (EudraCT Number 2014-004025-40) and both cohorts are closed to new participants. Findings Between Feb 13, 2015, and Feb 2, 2016, 24 participants with IPF were randomly assigned to treatment groups. 28 participants with CIC were enrolled during the same period and 27 received study treatment. In patients with IPF, PA101 reduced daytime cough frequency by 31·1% at day 14 compared with placebo; daytime cough frequency decreased from a mean 55 (SD 55) coughs per h at baseline to 39 (29) coughs per h at day 14 following treatment with PA101, versus 51 (37) coughs per h at baseline to 52 (40) cough per h following placebo treatment (ratio of least-squares [LS] means 0·67, 95% CI 0·48â0·94, p=0·0241). By contrast, no treatment benefit for PA101 was observed in the CIC cohort; mean reduction of daytime cough frequency at day 14 for PA101 adjusted for placebo was 6·2% (ratio of LS means 1·27, 0·78â2·06, p=0·31). PA101 was well tolerated in both cohorts. The incidence of adverse events was similar between PA101 and placebo treatments, most adverse events were mild in severity, and no severe adverse events or serious adverse events were reported. Interpretation This study suggests that the mechanism of cough in IPF might be disease specific. Inhaled PA101 could be a treatment option for chronic cough in patients with IPF and warrants further investigation
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