Takotsubo syndrome is an acute reversible cardiomyopathy with left ventricular dysfunction and a clinical presentation similar to an acute coronary syndrome. Emotional or physical triggers can cause it, including neurological conditions such as seizures. We describe a case of a woman in her 50s with Takotsubo syndrome secondary to status epilepticus, presenting with cardiac arrest and cardiogenic shock.
View Article and Find Full Text PDFSTEAP1 is a cell surface protein of the STEAP family whose main function focuses on intercellular communication and cell growth. STEAP1 is considered a promising putative biomarker and a candidate target for prostate cancer treatment. For specific and selective detection of STEAP1, a molecularly imprinted polymers (MIP) was developed on a screen-printed electrode (C-SPE) whose surface was modified with a nanocomposite based on carbon nanotubes decorated with dendritic platinum nanoparticles (CNTs- PAH /Pt).
View Article and Find Full Text PDFIntroduction: SARS-CoV-2 infection is associated with multiple cardiac manifestations. Left atrial strain (LA-S) by speckle tracking echocardiography (STE) is a novel transthoracic echocardiography (TTE) measure of LA myocardial deformation and diastolic dysfunction, which could lead to early recognition of cardiac injury in severe COVID-19 patients with possible implications on clinical management, organ dysfunction, and mortality. Cardiac injury may occur by direct viral cytopathic effects or virus-driven immune activation, resulting in heart infiltration by inflammatory cells, despite limited and conflicting data are available on myocardial histology.
View Article and Find Full Text PDFThis study analysed the adaptation of football athletes to competitive stressors regarding the upcoming match. For that, the study adopted a cross-sectional methodology using a critical incident approach. The participants were 352 young male football athletes, aged between 15 and 19 years ( = 16.
View Article and Find Full Text PDFBackground: We aimed to explore immune parameters in COVID-19 patients admitted to the intensive care unit (ICU) to identify distinctive features in patients with cardiac injury. Methods: A total of 30 COVID-19 patients >18 years admitted to the ICU were studied on days D1, D3 and D7 after admission. Cardiac function was assessed using speckle-tracking echocardiography (STE).
View Article and Find Full Text PDFNeuroinflammation in patients with Alzheimer's disease (AD) and related mouse models has been recognized for decades, but the contribution of the recently described meningeal immune population to AD pathogenesis remains to be addressed. Here, using the 3xTg-AD model, we report an accumulation of interleukin-17 (IL-17)-producing cells, mostly γδ T cells, in the brain and the meninges of female, but not male, mice, concomitant with the onset of cognitive decline. Critically, IL-17 neutralization into the ventricles is sufficient to prevent short-term memory and synaptic plasticity deficits at early stages of disease.
View Article and Find Full Text PDFThis work reports the design of a novel plastic antibody for cystatin C (Cys-C), an acute kidney injury biomarker, and its application in point-of-care (PoC) testing. The synthetic antibody was obtained by tailoring a molecularly imprinted polymer (MIP) on a carbon screen-printed electrode (SPE). The MIP was obtained by electropolymerizing pyrrole (Py) with carboxylated Py (Py-COOH) in the presence of Cys-C and multiwall carbon nanotubes (MWCNTs).
View Article and Find Full Text PDFStrain echocardiography enables the automatic quantification of the global longitudinal strain (GLS), which is a direct measure of ventricular shortening during systole. In the current context of overwhelmed ICUs and clinician shortage, GLS has the advantage to be quick and easy to measure by non-experts. However, little is known regarding its value to assess bi-ventricular systolic function in critically ill COVID-19 patients.
View Article and Find Full Text PDFRepresentative models of the nonlinear behavior of floating platforms are essential for their successful design, especially in the emerging field of wave energy conversion where nonlinear dynamics can have substantially detrimental effects on the converter efficiency. The spar buoy, commonly used for deep-water drilling, oil and natural gas extraction and storage, as well as offshore wind and wave energy generation, is known to be prone to experience parametric resonance. In the vast majority of cases, parametric resonance is studied by means of simplified analytical models, considering only two degrees of freedom (DoFs) of archetypical geometries, while neglecting collateral complexity of ancillary systems.
View Article and Find Full Text PDFRett syndrome (RTT; OMIM#312750) is mainly caused by mutations in the X-linked MECP2 gene (methyl-CpG-binding protein 2 gene; OMIM*300005), which leads to impairments in the brain-derived neurotrophic factor (BDNF) signalling. The boost of BDNF mediated effects would be a significant breakthrough but it has been hampered by the difficulty to administer BDNF to the central nervous system. Adenosine, an endogenous neuromodulator, may accomplish that role since through AR it potentiates BDNF synaptic actions in healthy animals.
View Article and Find Full Text PDFAging is associated with the progressive decay of cognitive function. Hippocampus-dependent processes, such as the formation of spatial memory, are particularly vulnerable to aging. Currently, the molecular mechanisms responsible for age-dependent cognitive decline are largely unknown.
View Article and Find Full Text PDFThere is mixed evidence for the relationship between increased levels of the drive for muscularity (DFM) and disordered eating behavior in males, therefore this study analysed the relationship between DFM and disordered eating behavior, giving particular relevance to the patterns of cognitive appraisal. A convenience sample was recruited from fitness centres and sport clubs with 308 participants, all males. Losing muscular mass represented a negative experience for participants, promoting a higher perception of threat appraisal.
View Article and Find Full Text PDFThere is a growing consensus that Alzheimer's disease (AD) involves failure of the homeostatic machinery, which underlies the firing stability of neural circuits. What are the culprits leading to neuron firing instability? The amyloid precursor protein (APP) is central to AD pathogenesis, and we recently showed that its intracellular domain (AICD) could modify synaptic signal integration. We now hypothesize that AICD modifies neuron firing activity, thus contributing to the disruption of memory processes.
View Article and Find Full Text PDFRes Q Exerc Sport
March 2019
Purpose: This study tested two hypotheses relating young athletes' sports motivations to parental behaviors and cognitive appraisal: (1) young athletes' motivation in sports is related to their parents' behavior; and (2) this relationship is mediated by cognitive appraisal, even after controlling for competitive level and sports records.
Method: This cross-sectional study included 673 young athletes and it measured the athletes' perceptions of parental behaviors, cognitive appraisal, and sports motivation.
Results: Structural equation modeling confirmed Hypothesis 1-the mother's behaviors accounted for 15 to 16% of the variance in sports motivation, and the father's behaviors accounted for 12 to 21% of the variance.
Synaptic dysfunction plays a central role in Alzheimer's disease (AD), since it drives the cognitive decline. An association between a polymorphism of the adenosine A receptor (AR) encoding gene-ADORA2A, and hippocampal volume in AD patients was recently described. In this study, we explore the synaptic function of AR in age-related conditions.
View Article and Find Full Text PDFThis work presents an alternative device for cancer screening in liquid biopsies. It combines a biomimetic film (i) with electrochemical detection (ii). The biomimetic film (i) was obtained by electro-polymerizing amine-substituted benzene rings around a CA 15-3 target.
View Article and Find Full Text PDFLeft paraduodenal hernia is an entrapment of the small bowel into the Landzert fossa, an unusual congenital peritoneal defect behind the descending mesocolon that results from failure of part of the descending mesocolon to fuse with the posterior parietal peritoneum (Doishita et al. in Radiographics, 36(1): 88-106, 2016). This fossa is reported to be present in approximately 2% of autopsy bodies.
View Article and Find Full Text PDFBurnout is a professional syndrome associated with stress caused by overwork. Our aim was to calculate the prevalence of burnout and stress on medical residents of Oncology, Haematology and Radiotherapy in Portugal, as well as to determine predictors of burnout and stress. An anonymous questionnaire was applied (n = 118).
View Article and Find Full Text PDFCaffeine is associated with procognitive effects in humans by counteracting overactivation of the adenosine A2A receptor (A2AR), which is upregulated in the human forebrain of aged and Alzheimer's disease (AD) patients. We have previously shown that an anti-A2AR therapy reverts age-like memory deficits, by reestablishment of the hypothalamic-pituitary-adrenal (HPA) axis feedback and corticosterone circadian levels. These observations suggest that A2AR over-activation and glucocorticoid dysfunction are key events in age-related hippocampal deficits; but their direct connection has never been explored.
View Article and Find Full Text PDFWest J Nurs Res
November 2016
This study tested the mediating role of primary (e.g., threat and challenge perceptions) and secondary (e.
View Article and Find Full Text PDFObjectives: To evaluate dysfunctional eating behaviour, self-esteem, social physique anxiety and quality of life in adolescents with type 1 diabetes who have differing desired weights and to evaluate the predictors of dysfunctional eating behaviour in these adolescents, with a focus on personal and psychological variables.
Methods: We evaluated 79 adolescents with type 1 diabetes (mean age of 15.71 years) of both sexes (58.
Abnormal accumulation of aggregated α-synuclein (aSyn) is a hallmark of sporadic and familial Parkinson's disease (PD) and related synucleinopathies. Recent studies suggest a neuroprotective role of adenosine A2A receptor (A2AR) antagonists in PD. Nevertheless, the precise molecular mechanisms underlying this neuroprotection remain unclear.
View Article and Find Full Text PDFThis study aims to compare eating behaviors, body satisfaction, exercise, and life satisfaction between normal-weight and overweight postmenopausal women and to examine the predictors of disordered eating and life satisfaction among postmenopausal women (n = 294). The overweight group had more eating disordered behavior, more body dissatisfaction, and lower physical quality of life. The increase of age predicted less disordered eating.
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