Publications by authors named "Coutinho J"

Article Synopsis
  • Hyperacute cardiac CT is more effective than transthoracic echocardiography in detecting intracardiac thrombus, but its routine use is limited due to costs and risks.
  • A study of 1,136 ischemic stroke or TIA patients found that longer arterial input function (AIF) dispersal times correlate with the presence of thrombus and worse outcomes, with a specific cutoff of 33 seconds indicating higher risk.
  • The findings support using AIF dispersal measurements to help identify patients who may benefit from cardiac imaging, potentially optimizing resource use in stroke management.
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Pupil responses are commonly used to provide insight into visual perception, autonomic control, cognition, and various brain disorders. However, making inferences from pupil data can be complicated by nonlinearities in pupil dynamics and variability within and across individuals, which challenge the assumptions of linearity or group-level homogeneity required for common analysis methods. In this study, we evaluated luminance evoked pupil dynamics in young healthy adults (n = 10, M:F = 5:5, ages 19-25 years) by identifying nonlinearities, variability, and conserved relationships across individuals to improve the ability to make inferences from pupil data.

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Background: Cardiac computed tomography (CT) is increasingly used to search for cardioembolic sources of acute ischemic stroke (AIS). We assessed the association between high-risk cardioembolic sources on cardiac CT and AIS.

Methods: We performed a case-control study using data from a prospective cohort including consecutive adult patients with suspected stroke who underwent cardiac CT acquired during the initial stroke imaging protocol between 2018 and 2020.

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Background: There is a paucity of studies on patient-reported outcomes and quality of life (QoL) in conservatively managed patients with a cerebral cavernous malformation (CCM).

Methods: This single-center observational study included consecutive adult CCM patients, diagnosed in 2000-2023, managed conservatively, and with at least 6 months of follow-up. Patients completed two validated patient-reported outcome measures (PROMs): EuroQol 5-dimensions 5-levels (EQ-5D-5L), and Patient-Reported Outcome Measurement Information System 29 (PROMIS-29).

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A biphasic system composed of two deep eutectic solvents (DES) sharing a common hydrogen-bond donor exhibits a tuneable phase behavior and efficient metal partitioning, yielding an improved separation selectivity of trivalent from divalent metal ions compared to the equivalent aqueous system.

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  • The text reviews the characteristics and purposes of Virtual Reality (VR) technologies designed for the elderly, following systematic review guidelines.
  • It analyzes 20 studies, mostly involving non-immersive VR devices, highlighting how VR can help improve physical and cognitive functions in older adults.
  • The findings suggest more research is needed in various settings to enhance VR's application by healthcare professionals in elderly care.
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  • Humans use smooth pursuit and saccades to track moving targets, with catch-up saccades correcting tracking errors.
  • The study examined how retinal acceleration error impacts saccade latency and amplitude during target pursuit.
  • Findings indicate that retinal acceleration error significantly predicts saccade parameters, suggesting it helps in estimating future target positions along with position and velocity errors.
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Background: Cerebral venous thrombosis (CVT) accounts for 0.5-1% of all strokes. The role of endovascular therapy (EVT) in the management of CVT remains controversial and variations in practice patterns are not well known.

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Aim: To compare the performance of the SARC-F and SARCCalf questionnaires in sarcopenia screening and their relationship with clinical and sociodemographic aspects of older adults.

Methods: Analytical cross-sectional study carried out with 739 elderly people in the community. Clinical, sociodemographic, anthropometric data and screening for signs suggestive of sarcopenia were obtained using the SARC-F and SARCCalf.

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Ischemic stroke is one of the leading causes of disability and mortality worldwide. Thrombosis is the main pathological process of stroke and is therefore an important therapeutic target in stroke prevention. In recent years, with the development of endovascular treatment and therefore retrieving the thrombus for further investigation, evidence is accumulating that immune cells are inextricably linked to stroke pathogenesis.

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This study presents a theoretical investigation into the phase stability, electronic, and optical properties of off-stoichiometricZrxTi1-xIrSb(= 0, 0.0625, 0.1875, 0.

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Article Synopsis
  • A significant portion of patients (1 in 10) experience epilepsy after having cerebral venous thrombosis (CVT), but it's challenging to predict who will be affected.* -
  • Researchers created the DIAS3 prognostic score using clinical data from over 1,100 patients to assess the likelihood of developing post-CVT epilepsy based on six clinical variables.* -
  • The study found a range of predicted risks for post-CVT epilepsy within one and three years, with successful validation of the score confirming its effectiveness in estimating individual risk.*
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Background: Following the conclusion of a stepped-wedge cluster randomized trial of the Systems Analysis and Improvement Approach (SAIA) to optimize the prevention of mother-to-child HIV transmission cascade in Manica Province, Mozambique, we conducted a natural experiment to test the sustainability of the delivery model with limited financial inputs.

Methods: District nurse supervisors were encouraged to continue to facilitate SAIA cycles in subordinate health facilities and provided phone credit and tablet access to upload implementation data. No additional resources (eg, funds for transport, refreshments, or supplies) were provided.

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Herein we demonstrate the formation of new stimuli-responsive aqueous biphasic systems (ABS), able to respond simultaneously to temperature and pH, or just to one stimulus, therefore allowing the design of more sustainable separation processes. This dual behavior is achieved with ABS formed by mono- or dicationic protic ionic liquids as phase-forming components, being defined by the ionic liquid cation chemical structure or its basicity. While ABS comprising monocationic ionic liquids only respond to the effect of temperature, systems comprising dicationic ionic liquids are simultaneously affected by both temperature and pH variations.

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Background: The nexus plant-microbe-environment is essential to understand the ecosystem processes shaping plant health and fitness. Within this triangle, soils and associated microflora are among the key ecosystem's drivers, underpinning plant productivity and evolution. In this study, we conducted a comprehensive analysis (physicochemical properties, enzyme activities, and taxonomic diversity) of soils under the canopy projection of Coffea arabica trees along a gradient of elevation (600, 800, and 900 m) and shade (0, 50, 100%).

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  • The article has a Digital Object Identifier (DOI) that allows it to be easily found online.
  • The DOI number given is 10.3389/fneur.2023.1251581.
  • This correction is important for making sure the information in the article is accurate.
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  • * The study tested how affective touch influences pain sensitization through a Temporal Summation of Second Pain (TSSP) protocol, comparing TSSP alone, vibrotactile stimulation, and CT stimulation using a robotic brush.
  • * Results showed that CT stimulation significantly lowered pain perception and physiological responses (like heart rate and N2-P2 brain activity) during TSSP compared to vibrotactile stimulation, suggesting that CT activity may help alleviate central pain sensitization.
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Laccases hold great potential for biotechnological applications, particularly in environmental pollutant remediation. Laccase activity is governed by the solvent environment, and ionic liquids (ILs) emerge as a versatile solvent for activation or stabilization of enzymes. Herein, effects of cholinium-based ILs formulated with carboxylic acids, inorganic acid, and amino acids as anionic species, on the catalytic activity of laccase from Trametes versicolor were investigated by experimental and computational approaches.

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This work studies the formation of deep eutectic solvents formed by one active pharmaceutical ingredient (quinine, pyrimethamine, or 2-phenylimidazopyridine) and a second component potentially acting as an excipient (betaine, choline chloride, tetramethylammonium chloride, thymol, menthol, gallic acid, vanillin, acetovanillone, 4-hydroxybenzaldehyde, syringaldehyde, propyl gallate, propylparaben, or butylated hydroxyanisole), aiming to address challenges regarding drug solubility, bioavailability, and permeability. A preliminary screening was carried out using the thermodynamic model COSMO-RS, narrowing down the search to three promising excipients (thymol, propyl gallate, and butylated hydroxyanisole). Nine solid-liquid equilibrium (SLE) phase diagrams were experimentally measured combining the three model drugs with the screened excipients, and using a combination of a visual melting method and differential scanning calorimetry.

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  • This study investigates the impact of left atrial appendage (LAA) slow-flow on ischemic stroke outcomes, finding that 16% of patients had slow-flow and shared characteristics with those having LAA thrombus.
  • While both slow-flow and thrombus were linked to a higher prevalence of atrial fibrillation, patients with thrombus experienced more severe strokes and worse functional outcomes than those with slow-flow.
  • Ultimately, slow-flow did not significantly affect functional outcomes or major cardiovascular events, but it was associated with an increased risk of stroke recurrence in patients with unknown causes of their strokes.
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We propose an innovative approach to address the pressing need for efficient and transparent evaluation techniques to assess extraction processes' sustainability. In response to society's growing demand for natural products and the consequent surge in biomass exploration, a critical imperative arises to ensure that these processes are genuinely environmentally friendly. Extracting natural compounds has traditionally been regarded as a benign activity rooted in ancient practices.

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Background: The benefit of intravenous thrombolysis with alteplase before endovascular thrombectomy (EVT) for acute ischemic stroke due to large vessel occlusion remains debated. In this study, we analyzed the cost-effectiveness of EVT alone versus intravenous alteplase before EVT in patients directly admitted to EVT-capable stroke centers from the Dutch health care payer perspective.

Methods: A decision analysis was performed using a Markov model with 15-year simulated follow-up to estimate total costs, quality-adjusted life years, and an incremental cost-effectiveness ratio of intravenous alteplase before EVT compared with EVT alone.

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  • Young patients with cryptogenic stroke and a patent foramen ovale (PFO) sometimes receive device closure to prevent future strokes, but about 25% may still have a residual right-to-left shunt after 6 months.
  • In a study of 227 patients, it was found that at 6 months post-closure, 72.7% had no shunt, while the rest had varying degrees of residual shunt.
  • By 12 months, many of these residual shunts had either diminished or closed completely, indicating that while residual shunts are common at 6 months, most are small and tend to close over time.
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