691 research outputs found

    US Consumers’ Perception of Local and Organic Food: An Analysis Based on Means-End Chain Analysis and Word Association

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    The market of local and organic food is still a niche market in the USA, despite its strong growth rates. Both offer consumers an alternative to a globalized anonymous food supply chain. Yet local food and organic food seem to be overlapping and to some degree competing food concepts. While the organic food market somehow has managed to “mature”, being widely distributed in national supermarket chains, local food in the US still seems to be tied to a “grassroots food movement”, being mainly distributed over short food supply chains. With several trends indicating sustained growth for local and organic consumption, this paper first addresses different connotations of local food and compares them to standard definitions of organic food. The main focus is to explore the perception of US consumers towards local and organic food, using results from two different studies, both using laddering techniques and word association tests, which were undertaken at Cornell University in New York State and at the University of Florida in the city of Gainesville. These findings are used to arrive at a better understanding of the image of local and organic food, and the motives and values of local and organic food consumers’

    Small molecule STING inhibition improves myocardial infarction remodeling

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    Aims: Myocardial infarction (MI) is a major global cause of death. Massive cell death leads to inflammation, which is necessary for ensuing wound healing. Extensive inflammation, however, promotes infarct expansion and adverse remodeling. The DNA sensing receptor cyclic GMP-AMP synthase and its downstream signaling effector stimulator of interferon genes (cGAS-STING) is central in innate immune reactions in infections or autoimmunity. Cytosolic double-strand DNA activates the pathway and down-stream inflammatory responses. Recent papers demonstrated that this pathway is also active following MI and that its genetic targeting improves outcome. Thus, we investigated if pharmacologic pathway inhibition is protective after MI in order to test its translational potential. Main methods: We investigated novel and selective small-molecule STING inhibitors that inhibit STING palmitoylation and multimerization and thereby downstream pathway activation in a preclinical murine MI model. We assessed structural and functional cardiac remodeling, infarct expansion and fibrosis, as well as cardiomyocyte hypertrophy and the expression of inflammatory genes. Key findings: Pharmacologic STING inhibition did not reduce mortality due to myocardial rupture in non-reperfused MI. Infarct size at day one was comparable. However, three weeks of pharmacologic STING inhibition after reperfused MI decreased infarct expansion and scarring, increased left ventricular systolic function to levels approaching normal values, and reduced myocardial hypertrophy. Significance: Selective small-molecule STING inhibition after myocardial infarction has the potential to improve wound healing responses and pathological remodeling and thereby attenuate the development of ischemic heart failure

    Taharri-i melal

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    Mehmet Celal'in Ä°rtika'da tefrika edilen Taharri-i Melal adlı romanıTefrikanın devamına rastlanmamÄ±ĆŸ, tefrika yarım kalmÄ±ĆŸtır

    Mental health surveillance in elite Para athletes: early identification and follow-up of athletes at risk of mental health problems

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    Objective: There is a lack of prospective data on mental health of elite Para athletes. The objective was to identify and follow elite Para athletes at risk of mental health problems. Methods: In a 124-week prospective cohort study, mental health of German elite Para athletes was monitored using the Patient Health Questionnaire-4 (PHQ-4). In case of positive screening (PHQ-4≄5) over 2 weeks, a follow-up contact was conducted by a sports psychiatrist, who asked the athletes about their mental condition and sources for their mental distress and offered support. Results: 7543 PHQ-4 scores were obtained from 122 Para athletes with a mean weekly response rate of 84%. The PHQ-4 screening was considered positive for symptoms of depression or anxiety with a prevalence of 6.7%, affecting 48.4% (n=59) of all participants at some point during the study period. In 76.6% (n=49) of all follow-up contacts, athletes (n=34) reported at least one mental health problem, most frequently mental distress (n=31), followed by symptoms of depression (n=19) including acute suicidality (n=1). The most common mental stressors cited were related to education and problems with the team, coaches or federation. At follow-up, almost two-thirds of the athletes were either already in professional psychiatric or psychological care (25%) or were recommended to seek such care (32.8%). Conclusion: Our screening and follow-up system revealed high rates of mental health problems in elite Para athletes. Programmes for early identification with mental health monitoring under the supervision of mental health professionals should be considered by sports federations for Para athletes

    Validation of the Patient Health Questionnaire‐4 for longitudinal mental health evaluation in elite Para athletes

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    Background Despite the increasing amount of research regarding mental health in elite athletes in recent years, athletes with impairments are hardly represented. Due to this lack of data and the significant need of athlete-specific mental health screening tools, a continuous mental health monitoring program for elite Para athletes was implemented. Objective Validation of the Patient Health Questionnaire-4 (PHQ-4) as a suitable tool for continuous mental health evaluation in elite Para athletes. Design A 43-week prospective observational cohort study. Setting Online questionnaire, provided weekly via web browser and mobile app. Participants Seventy-eight Para athletes preparing for Paralympic Summer and Winter Games. Interventions Not applicable. Main Outcome Measures Weekly PHQ-4 scores, stress level, and mood. Results With a mean weekly response rate of 82.7% (SD = 8.0), 2149 PHQ-4, 2159 stress level and 2153 mood assessments were completed. Mean PHQ-4 score among all participating athletes was 1.2 (SD = 1.8; 95% confidence interval [CI], [1.1–1.3]). Individual weekly scores ranged from 0 to 12 and showed significant floor effects, with 54% of the scores being zero. PHQ-4 scores were significantly higher among female athletes and team sport members (p < .001). Internal consistency of the PHQ-4 was satisfying, Cronbach's α being 0.839. There were significant cross-sectional as well as longitudinal correlations of PHQ-4 and stress level as well as mood values (p < .001). 39.7% of all athletes (n = 31) had at least one positive screen for mental health symptoms. Conclusions The PHQ-4 was shown to be a valid tool for mental health surveillance in elite Para athletes. Significant correlations of the PHQ-4 and stress level as well as mood were shown. High weekly response rates among participating athletes indicated good acceptance of the program. The weekly monitoring allowed for the identification of individual fluctuations and could identify potential athletes at risk for mental health problems when combined with clinical follow-up

    Dose-dependent effect of parenteral iron therapy on bleomycin-detectable iron in immune apheresis patients

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    Dose-dependent effect of parenteral iron therapy on bleomycin-detectable iron in immune apheresis patients.BackgroundIron deficiency and anemia are commonly encountered in patients with autoimmune diseases undergoing immune apheresis. This makes erythropoietin and iron substitution necessary in most patients. However, intravenous iron therapy may result in an increase of potentially toxic nontransferrin-bound iron.MethodsWe examined the effect of 50 mg or 100 mg of iron (III) sucrose on bleomycin-detectable iron (BDI) in immune apheresis patients. Six patients with autoimmune disorders and normal kidney function were enrolled. Before and after the injection of 50 mg or 100 mg of iron (III) sucrose, BDI was measured in serum samples at five different time points.ResultsThere was no BDI traceable before injection of iron (III) sucrose. BDI was present in serum of all patients after the administration of 100 mg of iron (III) sucrose in concentrations up to 0.49 ÎŒmol/L. In contrast, only one patient showed BDI at a concentration of 0.16 ÎŒmol/L after the administration of 50 mg of iron (III) sucrose.ConclusionWe conclude that if parenteral iron is administered after apheresis treatment, despite the equal tolerability, use of 50 mg of iron (III) sucrose is superior to 100 mg of iron (III) sucrose in avoiding the formation of potentially toxic nontransferrin-bound iron

    Systematic review of craniofacial osteosarcoma regarding different clinical, therapeutic and prognostic parameters

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    Background Osteosarcomas are the most common primary bone tumor while occurrence in the craniofacial skeleton is relatively rare. There are clinical differences of osteosarcomas regarding their location. In this regard craniofacial osteosarcomas (COS) have special characteristics. Extracranial osteosarcomas (EOS) occur mainly in the long bones of the extremities (tibia, humerus and femur). These tumors metastasize hematogenically at a very early stage. In comparison, COS are mainly localized in the mandible and maxilla, occur later in life and show significantly less and later metastasis and respond differently to adjuvant therapy. In the literature, clinical characteristics of COS and EOS are rarely compared directly. The aim of this systematic review is to answer the question whether COS and EOS exhibit fundamentally different clinical behavior and how they differ in terms of survival rates and response to different therapies. Methods A systemic review was performed. Pubmed, Cochrane and Google Scholar were used as search engines. The literature research was done by using clearly defined terms and their links. 124 full texts were selected and evaluated for this review. The inclusion criteria were determined using the PICO model. Results COS have significantly better survival rates, especially if they are located in the jawbone. Surgical R0 resection is crucial for therapeutic success. The study situation regarding the benefit of neoadjuvant chemotherapy in COS is very inhomogeneous. There is also no evidence for the benefit of adjuvant radio- or chemotherapy in COS. The large heterogeneity of the studies in terms of therapeutic concept, initial situation of the patients and outcome considered, as well as the small number of patients with craniofacial osteosarcoma were limiting factors. Conclusion The results of this study show the clear therapeutic and prognostic differences between COS and EOS and underline the necessity to consider both types of osteosarcoma as independent tumor entities in future studies. Furthermore, the study highlights the importance of surgical R0 resection for the prognosis of COS patients. There is no evidence for therapeutic benefit of adjuvant/neoadjuvant radio-/chemotherapy in R0 resected COS cases

    Neuronal networks in children with continuous spikes and waves during slow sleep

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    Epileptic encephalopathy with continuous spikes and waves during slow sleep is an age-related disorder characterized by the presence of interictal epileptiform discharges during at least >85% of sleep and cognitive deficits associated with this electroencephalography pattern. The pathophysiological mechanisms of continuous spikes and waves during slow sleep and neuropsychological deficits associated with this condition are still poorly understood. Here, we investigated the haemodynamic changes associated with epileptic activity using simultaneous acquisitions of electroencephalography and functional magnetic resonance imaging in 12 children with symptomatic and cryptogenic continuous spikes and waves during slow sleep. We compared the results of magnetic resonance to electric source analysis carried out using a distributed linear inverse solution at two time points of the averaged epileptic spike. All patients demonstrated highly significant spike-related positive (activations) and negative (deactivations) blood oxygenation-level-dependent changes (P < 0.05, family-wise error corrected). The activations involved bilateral perisylvian region and cingulate gyrus in all cases, bilateral frontal cortex in five, bilateral parietal cortex in one and thalamus in five cases. Electrical source analysis demonstrated a similar involvement of the perisylvian brain regions in all patients, independent of the area of spike generation. The spike-related deactivations were found in structures of the default mode network (precuneus, parietal cortex and medial frontal cortex) in all patients and in caudate nucleus in four. Group analyses emphasized the described individual differences. Despite aetiological heterogeneity, patients with continuous spikes and waves during slow sleep were characterized by activation of the similar neuronal network: perisylvian region, insula and cingulate gyrus. Comparison with the electrical source analysis results suggests that the activations correspond to both initiation and propagation pathways. The deactivations in structures of the default mode network are consistent with the concept of epileptiform activity impacting on normal brain function by inducing repetitive interruptions of neurophysiological functio
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