269 research outputs found
Pockets of Promise: A Phenomenological Study of Experienced Special Education Teachers Working With Students With Emotional Disturbance in an Alternative Program
Abstract
The purpose of this phenomenological study was to explore and understand, from the perspective of experienced Special Education Teachers, successful practices and barriers in meeting the needs of students with emotional disturbance (ED) in Special Education Alternative programs. The study aims to gain an in-depth understanding, from the lived experiences of special education teachers, the critical elements required for comprehensive instructional and social-emotional learning (SEL) supports and services in meeting the diverse needs of ED students. Additionally, this research was conducted to gain insight into the barriers and systematic challenges in fulfilling the school\u27s original intention of transitioning students to less restrictive educational settings once they are placed. Phenomenological interviews focused on the research questions revealed an expanded need for district level support, on-going professional development, and comprehensive Special Education Alternative program planning. Keywords: alternative program, disproportionality, marginalized, overrepresentation, student outcomes, segregated setting
Association Between an Acute, Drug-Induced Decrease in High-Density Lipoprotein Cholesterol Levels and Risk of Cardiovascular Events
Background and Objective: The literature describing the long-term effect of an acute, drug-induced decrease in high-density lipoprotein cholesterol (HDL-C) and cardiovascular (CV) risk is limited. We aimed to further explore this potential association. Methods: A retrospective cohort study was conducted using the Clinical Practice Research Datalink (CPRD) between 2006 and 2014. The study enrolled patients who initiated statin therapy for a short term, to identify patients with an acute, short-term decrease in HDL levels rather than to assess sustained treatment. HDL-C measurements were assessed within 9 months before and after statin initiation and patients were followed up for up to 5 years for CV events, comparing those with a decrease in HDL-C with those with constant HDL-C levels. The primary composite endpoint of major adverse cardiac events (MACE) was defined as CV death, myocardial infarction, revascularisation, and hospitalised ischaemic stroke. We estimated crude and propensity score weighted 5-year cumulative risk differences and hazard ratios (HR) comparing both groups. Results: A total of 17,543 patients (HDL-C decrease group, n = 6454; HDL-C constant group, n = 11,089) were included in the study. The 5-year cumulative incidence of MACE in the HDL-C constant cohort was 5.91%. The corresponding risk differences for HDL-C decrease versus the constant group was 1.23% (95% confidence interval [CI] 0.28–2.18) and the HR was 1.20 (95% CI 1.04–1.39). This was mainly driven by an increased risk in ischaemic stroke (HR 1.44, 95% CI 1.08–1.90) and CV death (HR 1.23, 95% CI 0.93–1.63). Conclusion: Patients with a short-term, drug-induced decrease in HDL-C had a moderately increased long-term risk of CV events compared with those with constant HDL-C levels. Trial Registration Number: 207595 (GlaxoSmithKline Trial registry; https://www.gsk-studyregister.com/)
Peripheral Purinergic Modulation in Pediatric Orofacial Inflammatory Pain Affects Brainstem Nitroxidergic System: A Translational Research
Physiology of orofacial pain pathways embraces primary afferent neurons, pathologic changes in the trigeminal ganglion, brainstem nociceptive neurons, and higher brain function regulating orofacial nociception. The goal of this study was to investigate the nitroxidergic system alteration at brainstem level (spinal trigeminal nucleus), and the role of peripheral P2 purinergic receptors in an experimental mouse model of pediatric inflammatory orofacial pain, to increase knowledge and supply information concerning orofacial pain in children and adolescents, like pediatric dentists and pathologists, as well as oro-maxillo-facial surgeons, may be asked to participate in the treatment of these patients. The experimental animals were treated subcutaneously in the perioral region with pyridoxalphosphate-6-azophenyl-2′,4′-disulphonic acid (PPADS), a P2 receptor antagonist, 30 minutes before formalin injection. The pain-related behavior and the nitroxidergic system alterations in the spinal trigeminal nucleus using immunohistochemistry and western blotting analysis have been evaluated. The local administration of PPADS decreased the face-rubbing activity and the expression of both neuronal and inducible nitric oxide (NO) synthase isoforms in the spinal trigeminal nucleus. These results underline a relationship between orofacial inflammatory pain and nitroxidergic system in the spinal trigeminal nucleus and suggest a role of peripheral P2 receptors in trigeminal pain transmission influencing NO production at central level. In this way, orofacial pain physiology should be elucidated and applied to clinical practice in the future
Non alcoholic fatty liver disease is positively associated with increased glycated haemoglobin levels in subjects without diabetes
Screening for non-alcoholic fatty liver disease (NAFLD) is key step for primary management of fatty liver in the clinical setting. Excess weight subjects carry a greater metabolic risk even before exhibiting pathological patterns, including diabetes. We characterized the cross-sectional relationship between routine circulating biomarkers and NAFLD in a large sample of diabetes-free subjects with overweight or obesity, to elucidate any independent relationship. A population sample of 1232 consecutive subjects with a body mass index of at least 25 kg/m2, not receiving any drug or supplemental therapy, was studied. Clinical data and routine biochemistry were analyzed. NAFLD was defined using the validated fatty liver index (FLI), classifying subjects with a score ≥ 60% as at high risk. Due to extreme skewing of variables of interest, resampling matching for age and sex was performed. Our study population was characterized by a majority of females (69.90%) and a prevalence of NAFLD in males (88.90%). As a first step, propensity score matching was explicitly performed to balance the two groups according to the FLI cut-off. Based on the resulting statistical trajectories, corroborated even after data matching, we built two logistic regression models on the matched population (N = 732) to verify any independent association. We found that each unit increase of FT3 implicated a 50% increased risk of NAFLD (OR 1.506, 95%CI 1.064 to 2.131). When including glycated haemoglobin (HbA1c) in the model, free-triiodothyronine (FT3) lost significance (OR 1.557, 95%CI 0.784 to 3.089) while each unit increase in HbA1c (%) indicated a significantly greater NAFLD risk, by almost two-fold (OR 2.32, 95%CI 1.193 to 4.512). Glucose metabolism dominates a key pathway along the hazard trajectories of NAFLD, turned out to be key biomarker in monitoring the risk of fatty liver in diabetes-free overweight subjects. Each unit increase in HbA1c (%) indicated a significantly greater NAFLD risk, by almost two-fold, in our study
Barium effect on germination, plant growth, and antioxidant enzymes in Cucumis sativus L. plants
Barium (Ba) is a nonessential element that can cause several deleterious effects in
most organisms. Elevated Ba concentrations can be toxic for plants and may affect
growth and disturbances in homeostasis. This study aimed to evaluate the Ba stress,
the plant-tolerance limits, and the detoxification strategy adopted by Cucumis sativus
L. The effect of Ba on seed's germination and vegetative development of this species
was evaluated. For germination test, different Ba concentrations were used (0, 200,
500, 1,000, and 2,000 μM). Results showed that germination was stimulated with
500 and 2,000 µM of Ba. The toxicity effect on plant development was studied by
treating the plants with increasing doses of Ba (100, 200, 300, and 500 μM) during
45 days. Shoot and root dry biomass production decreased significantly with elevated
Ba concentrations, although water content enhanced in the roots. The concentration
of Ba, 500 µM, induced high Ba accumulation in shoots and roots (9 times higher
than in the control plants). Moreover, results showed that catalase, guaiacol peroxidase, and ascorbate peroxidase activities were stimulated in the different tissues of
cucumber plants which highlight the occurring of an oxidative damage through Ba
treatments and the involvement of the plant enzymatic antioxidant defense system
Effects of dietary salt on gene and protein expression in brain tissue of a model of sporadic small vessel disease
Background: The effect of salt on cerebral small vessel disease (SVD) is poorly
understood. We assessed the effect of dietary salt on the cerebral tissue of the strokeprone spontaneously hypertensive rat (SHRSP) - a relevant model of sporadic SVD - at both the gene and protein level.
Methods: Brains from 21 week old SHRSP and Wistar-Kyoto rats, half additionally salt-loaded (via a 3 week regime of 1% NaCl in drinking water) were split into 2 hemispheres and sectioned coronally – one hemisphere for mRNA microarray and qRT-PCR, the other for immunohistochemistry using a panel of antibodies targeting components of the neurovascular unit.
Results: We observed differences in gene and protein expression affecting the acute phase pathway and oxidative stress (ALB, AMBP, APOH, AHSG and LOC100129193, up-regulated in salt-loaded WKY versus WKY, >2-fold), active microglia (increased Iba-1 protein expression in salt-loaded SHRSP versus saltloaded WKY, p<0.05), vascular structure (ACTB & CTNNB, up-regulated in saltloaded SHRSP versus SHRSP, >3-fold; CLDN-11,VEGF and VGF downregulated >- 2-fold in salt-loaded SHRSP versus SHRSP) and myelin integrity (MBP downregulated in salt loaded WKY rats versus WKY, >2.5-fold). Changes of salt-loading were more pronounced in SHRSP and occurred without an increase in blood pressure in WKY rats.
Conclusion: Salt exposure induced changes in gene and protein expression in an experimental model of SVD and its parent rat strain in multiple pathways involving components of the glio-vascular unit. Further studies in pertinent experimental models at different ages would help clarify the short and long-term effect of dietary salt in SVD
Fruit and vegetables intake among elderly Iranians: a theory-based interventional study using the five-a-day program
Abstract Background The benefit of FV intake in old age is well documented. However, there is evidence that old people do not consume enough FV. The purpose of this study was to evaluate the effectiveness of a tailored nutrition intervention that aimed to increase the FV intake among elderly Iranians aged 60 and over. Methods This quasi-experimental study was performed among a community-based sample of elderly in Tehran, Iran in year 2008 to 2009. Data were collected at baseline and 4 weeks follow-up. At baseline face-to-face interviews were conducted using a structured questionnaire including items on demographic information, stages of change, self-efficacy, decisional balance, daily servings of FV intake. Follow-up data were collected after implementing the intervention. Results In all 400 elderly were entered into the study (200 individuals in intervention group and 200 in control group). The mean age of participants was 64.06 ± 4.48 years and overall two-third of participants were female. At baseline total FV intake was not differed between two groups but it was significantly increased in the intervention group at posttest assessment (mean serving/day in intervention group 3.08 ± 1.35 vs. 1.79 ± 1.08 in control group; P = 0.001). Further analysis also indicated that elderly in intervention group had higher FV intake, perceived benefits and self-efficacy, and lower perceived barriers. Compared with control group, greater proportions of elderly in intervention group moved from pre-contemplation to contemplation/preparation and action/maintenance stages (P Conclusion This study suggests that the Transtheoretical Model is a useful model that can be applied to dietary behavior change, more specifically FV consumption among elderly population in Iran and perhaps elsewhere with similar conditions.</p
Coordinated Regulation of Niche and Stem Cell Precursors by Hormonal Signaling
In the developing Drosophila ovary, the ecdysone signaling pathway controls the differentiation of both niche and germ line stem cell precursors
A large abdominal intercostal hernia in a patient with vascular type Ehlers-Danlos syndrome: a surgical challenge
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