642 results match your criteria: "Lusofona University[Affiliation]"

A new methodology for a rapid and high-throughput comparison of molecular profiles and biological activity of phytoextracts.

Biotechnol Bioeng

October 2024

ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Lisboa, Portugal.

To robustly discover and explore phytocompounds, it is necessary to evaluate the interrelationships between the plant species, plant tissue, and the extraction process on the extract composition and to predict its cytotoxicity. The present work evaluated how Fourier Transform InfraRed spectroscopy can acquire the molecular profile of aqueous and ethanol-based extracts obtained from leaves, seeds, and flowers of Cynara Cardunculus, and ethanol-based extracts from Matricaria chamomilla flowers, as well the impact of these extracts on the viability of mammalian cells. The extract molecular profile enabled to predict the extraction yield, and how the plant species, plant tissue, and extraction process affected the extract's relative composition.

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Systematic review and meta-analysis of the visual mismatch negativity in schizophrenia.

Eur J Neurosci

June 2024

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal.

Mismatch negativity (MMN) is an event-related potential component automatically elicited by events that violate predictions based on prior events. To elicit this component, researchers use stimulus repetition to induce predictions, and the MMN is obtained by subtracting the brain response to rare or unpredicted stimuli from that of frequent stimuli. Under the Predictive Processing framework, one increasingly popular interpretation of the mismatch response postulates that MMN represents a prediction error.

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Current State of Canine in Portugal.

Animals (Basel)

April 2024

Internal Medicine, Faculty of Veterinary Medicine, Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35413 Las Palmas de Gran Canaria, Spain.

The favourable geo-climatic conditions in Portugal have made it highly conducive to the development of in dogs, leading to its identification as an endemic region. This nematode is rapidly spreading across Europe, particularly in northeastern countries. The objective of this study was to provide an updated assessment of the prevalence of this disease in Portuguese dogs, analysing the results in relation to epidemiological and geo-environmental factors, and to identify potential risk factors.

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With the ubiquity of technology in the modern life, contact between different social groups via different digital means is an everyday reality. Can such a digital intergroup contact reduce prejudice, or does it exacerbate it? In this study, we summarize the present evidence on the links between intergroup digital contact and prejudice in a variety of intergroup contexts. We meta-analyzed experimental and correlational evidence from 88 independent samples ( = 9,385).

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A Self-Reported Study on Explanatory Variables of Stress in Multiple Sclerosis Patients: Exploring the Effect of Physical Conditions and Emotion Regulation Processes.

Clin Psychol Psychother

May 2024

Faculty of Psychology and Educational Sciences, Center for Research in Neuropsychology and Cognitive and Behavioral Intervention (CINEICC), University of Coimbra, Coimbra, Portugal.

Background: Multiple sclerosis (MS)-linked stress is frequent, multidetermined and facilitates the onset/exacerbation of MS. However, few explanatory models of stress analysed the joint explanatory effect of emotion regulation and clinical outcomes of MS in those patients.

Objective: This study explored whether self-reported MS-related conditions (number of relapses, fatigue and global disability) and specific emotion regulation processes (experiential avoidance and self-compassion) explain stress symptoms in MS patients.

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There is limited research on female football players, especially related to their physical and cognitive performance under different climactic conditions. We analyzed the impact of a hot environmental temperature on physical performance and anticipation in elite female football players during a fatigue-inducing intermittent protocol. Elite female players (n = 21) performed the countermovement jump (CMJ) and responded to filmed sequences of offensive play under two distinct environmental temperatures (i.

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Milk thistle () is well-known for its antioxidant activity due to the presence of silymarin. Albeit some studies show a potential for skin inflammation, its activity against dermal MMP-9 and MMP-2 remains to be studied. Silymarin isolated from an herbal extract was tested for gelatinase inhibition in the presence of isolated MMP-9 and in dermal adenocarcinome HaCaT cells.

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Can the HB-EGF/EGFR pathway restore injured neurons?

FEBS J

May 2024

Veterinary and Animal Research Center (CECAV), Faculty of Veterinary Medicine, Lusófona University-Lisbon University Centre, Portugal.

Heparin-binding epidermal growth factor-like growth factor (HB-EGF) is a transmembrane protein that, when cleaved by metalloproteases through a process called ectodomain shedding, binds to the EGF receptor (EGFR), activating downstream signaling. The HB-EGF/EGFR pathway is crucial in development and is involved in numerous pathophysiological processes. In this issue of The FEBS Journal, Sireci et al.

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poses a threat to both human and animal health. This work describes an outbreak in a Portuguese rabbit farm, detailing the isolates' clinical manifestations, necropsy findings, and phenotypic and genomic profiles. Clinical signs, exclusively observed in does, included lethargy and reproductive signs.

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Equine melanomas are a common neoplasm in gray horses. However, scientific knowledge about their progression over time is quite scarce. Some owners and veterinarians still believe that early intervention is not necessary, stating that tumors evolve very slowly and intervention could worsen the animal's condition.

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Research on the influence of chronotype and time of day (TOD) on cognitive performance, especially in children, is limited. We explored potential interactive effects, hypothesizing that performance differs when comparing preferred vs. non-preferred TOD.

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Article Synopsis
  • Eco-anxiety is a growing global concern related to environmental disasters, and the Hogg Eco-Anxiety Scale (HEAS) was translated into Spanish as HEAS-SP to address this issue in Spanish-speaking populations.
  • The validation of the HEAS-SP involved large samples from Argentina and Spain, confirming its reliability and consistency across different demographic groups.
  • Results indicated that eco-anxiety varies by gender and age, with Spanish participants reporting higher emotional responses and younger individuals showing increased levels of eco-anxiety.
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Background: Implementation of clinical metagenomics and pathogen genomic surveillance can be particularly challenging due to the lack of bioinformatics tools and/or expertise. In order to face this challenge, we have previously developed INSaFLU, a free web-based bioinformatics platform for virus next-generation sequencing data analysis. Here, we considerably expanded its genomic surveillance component and developed a new module (TELEVIR) for metagenomic virus identification.

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Background: Bovine Genital Campylobacteriosis (BGC), a worldwide distributed venereal disease caused by Campylobacter fetus subsp. venerealis (Cfv), has a relevant negative economic impact in cattle herds. The control of BGC is hampered by the inexistence of globally available effective vaccines.

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Prospective memory (PM) refers to the ability to remember to execute an intention in the future without having a permanent reminder. These intentions can be performed when they are not relevant or become no-longer needed, the so-called "commission errors". The present study aims to understand the effect of cue salience on PM commission errors with unperformed intentions and on the ongoing task performance-associated costs.

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Article Synopsis
  • The study examines the link between children's fundamental movement skills (FMS) and their levels of moderate-to-vigorous physical activity (MVPA) throughout the week.
  • A sample of 1,014 children aged 6-10 were analyzed, revealing that children with more advanced FMS tended to be more physically active than those with fewer skills.
  • Results indicate that both groups of children with lower FMS levels were less active on weekdays and weekends, highlighting the importance of FMS in achieving recommended activity levels, particularly during weekends.
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Due to specific bacterial microbiota, raw milk cheeses have appreciated sensory properties. However, they may pose a threat to consumer safety due to potential pathogens presence. This study evaluated the microbiological contamination of 98 raw milk cheeses from Beira Baixa, Portugal.

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The Integration of Stressful Life Experiences Scale (ISLES) evaluates the ability to integrate stressful experiences into one's meaning system. The present study developed and validated a version of this scale for a bereaved Portuguese-speaking population, utilizing a sample of 242 adults who had lost a significant other to diverse causes of death. The sample was predominantly female, educated, married, or in consensual unions, and actively employed.

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Despite alarming evidence on sexual violence against women, little is known about men's emotional responses to rape and how these may be involved in sexual violence dynamics. Accordingly, our aim was to capture how rape scenarios are emotionally appraised. The current study evaluated men's (N = 30) self-reported and psychophysiological emotional responses (facial EMG, electrodermal activity) to a rape scene, and contrasted it with their responses to stimuli depicting nonsexual violence and nonviolent male-female interactions.

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The intensity of resistance training (RT) exercise is an important consideration for determining relevant health and performance-related outcomes. Yet, current objective exercise intensity measures present concerns in terms of viability or cost. In response to these concerns, repetition-in-reserve (RIR) scales may represent an adequate method of measuring and regulating intensity.

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Objective: The aim was to (1) estimate the relationship between physical fitness (PF) and object control fundamental movement skills (FMS), (2) identify child characteristics that relate with PF and FMS, and (3) examine associations between the school environment, PF, and FMS.

Methods: The sample included 1014 Portuguese children aged 6-10 years from the REACT project. PF was assessed via running speed, shuttle run, standing long jump, handgrip, and the PACER test.

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Traumatic nerve injuries are common lesions that affect several hundred thousand humans, as well as dogs and cats. The assessment of nerve regeneration through animal models may provide information for translational research and future therapeutic options that can be applied mutually in veterinary and human medicine, from a One Health perspective. This review offers a hands-on vision of the non-invasive and conservative approaches to peripheral nerve injury, focusing on the role of neurorehabilitation in nerve repair and regeneration.

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Background: The monitoring of nociception/antinociception poses a significant challenge during anesthesia, making the incorporation of new tools like the Parasympathetic Tone Activity (PTA) monitor an added value in feline anesthesia.

Objectives: To compare the effectiveness and speed of PTA monitoring when compared to heart rate (HR) in detecting surgical stimuli (SS) during the intraoperative period in 49 female cats undergoing ovariectomy (OV).

Methods: Instantaneous Parasympathetic Tone Activity (PTAi) values, HR, , and non-invasive SAP and MAP were continuously monitored and systematically assessed.

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Light Cannabis Use and the Adolescent Brain: An 8-years Longitudinal Assessment of Mental Health, Cognition, and Reward Processing.

Psychopharmacology (Berl)

July 2024

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences (Laboratory of Neuropsychophysiology), University of Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal.

Article Synopsis
  • Cannabis has been the most commonly used illicit drug, especially among young people, with research indicating links to mental health issues due to its impact on brain functions related to reward and cognition, though these findings are often inconsistent.
  • A study classified participants based on their cannabis use from ages 19 to 22, examining predictive factors like psychopathological symptoms, cognitive performance, and brain activity through tasks designed to measure incentives.
  • Results showed that conduct problems at age 14 were a strong predictor of later cannabis use, and while light cannabis users displayed more behavioral issues than non-users at age 19, there were no significant differences in emotional or cognitive functioning, suggesting that executive function impairments aren't factors that lead to or follow cannabis use.
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Vulnerability to heat waves and their negative effects on health vary not only due to individual factors but also due to situational factors, such as time and geography. Hence, we explored seasonal variations and predictors of heat wave feelings of threat across different heat wave geographical susceptibility locations in Portugal. A total of 238 Portuguese residents responded to a web-based longitudinal survey: before the summer, during a heat wave in the summer, during the summer, and after the summer.

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