522 results match your criteria: "Pontifical Catholic University of Rio Grande do Sul-PUCRS[Affiliation]"

Background: Sleep bruxism is a major research area in dentistry today and needs valid clinical means of diagnosis against valid instrumental methods. Purpose: To assess the validity of the most commonly reported sleep bruxism (SB) signs and symptoms in the literature against a polysomnography (PSG) validated portable electromyographic (EMG) device (BiteStrip®).

Material And Methods: Fifty young adults (40 women & 10 men, 18-30 years old) volunteered for the sequential and simultaneous administration of the SB signs and symptoms questionnaire versus the BiteStrip®.

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Article Synopsis
  • - The study aimed to review and meta-analyze RNA sequencing research comparing brain tissue from Alzheimer's disease patients to control subjects, focusing on study quality and identifying important genes and pathways linked to the disease.
  • - Researchers examined 3,266 published studies and included 24 that met their criteria, discovering 571 differentially expressed genes in the temporal lobe and 189 in the frontal lobe, highlighting pathways like "Tube morphogenesis" and "Neuroactive ligand-receptor interaction."
  • - The review faced challenges due to study differences and limited data but emphasizes that thorough methods are crucial for understanding Alzheimer's transcriptomic changes, which can help in the development of biomarkers and treatments.
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Atrophy Patterns in Patients With Multiple Sclerosis With Cognitive Impairment, Fatigue, and Mood Disorders.

Neurology

December 2024

From the Department of Radiology and Oncology (C.d.M.R., C.C.L.), Hospital das Clínicas da Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP); LIM 44 (C.d.M.R., M.P.N., I.B.A., C.C.L.), Laboratory of Medical Investigation in Magnetic Resonance of the University of São Paulo, São Paulo, Brazil; MS Center Amsterdam (C.d.M.R., M.M.S.), Anatomy and Neurosciences, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, Amsterdam UMC, location VUmc, the Netherlands; Department of Neurology (S.L.A.-P., D.C.), Hospital das Clínicas da Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP); Department of Epidemiology and Biostatistics (M.B.W.), Faculdade de Medicina, Universidade Federal do Rio Grande do Sul (UFRGS); Department of Epidemiology and Biostatistics (M.B.W.), School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Brazil; MS Center Amsterdam (F.B.), Radiology and Nuclear Medicine, Vrije Universiteit Amsterdam, Amsterdam UMC, location VUmc, the Netherlands; and Queen Square MS Center (F.B.), Department of Neuroinflammation, Institute of Neurology, Faculty of Brain Sciences, and Centre for Medical Image Computing (CMIC) (F.B.), Department of Medical Physics and Biomedical Engineering, University College London (UCL), United Kingdom.

Article Synopsis
  • - The study investigates how cognitive impairment, fatigue, and mood disorders interact in individuals with multiple sclerosis (MS) by examining brain atrophy patterns across different patient profiles.
  • - Researchers categorized MS patients into four clusters based on their cognitive performance, fatigue, anxiety, and depression, using k-means clustering to identify distinct patterns among them.
  • - The findings revealed that cognitive tests and mental health factors significantly impact disability scores, with specific clusters showing correlations between cognitive impairment and levels of fatigue, anxiety, and depression.
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Psychoneuroimmunology of Mood Disorders.

Methods Mol Biol

November 2024

Laboratory of Immunobiology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil.

Recent research has shed light on the intricate relationship between mood disorders, such as major depressive disorder (MDD) and bipolar disorder (BD), and inflammation. This chapter explores the complex interplay involving immune and metabolic dysfunction in the pathophysiology of these disorders, emphasizing their association with autoimmunity/inflammatory conditions, chronic low-grade systemic inflammation, T cell overactivation, and immunosenescence. This perspective underscores the notion that MDD and BD are not solely brain disorders, highlighting their nature as multi-system conditions.

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In recent years, the expansion of molecularly targeted cancer therapies has significantly advanced precision oncology. Parallel developments in next-generation sequencing (NGS) technologies have also improved precision oncology applications, making genomic analysis of tumors more affordable and accessible. Targeted NGS panels now enable the rapid identification of diverse actionable mutations, requiring clinicians to efficiently assess the predictive value of cancer biomarkers for specific treatments.

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In this mini review, we explore the complex network of inflammatory reactions incited by SARS-CoV-2 infection, which extends its reach well beyond the respiratory domain to influence various organ systems. Synthesizing existing literature, it elucidates how the hyperinflammation observed in COVID-19 patients affects multiple organ systems leading to physiological impairments that can persist over long after the resolution of infection. By exploring the systemic manifestations of this inflammatory cascade, from acute respiratory distress syndrome (ARDS) to renal impairment and neurological sequelae, the review highlights the profound interplay between inflammation and organ dysfunction.

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Background: The COVID-19 pandemic has posed significant challenges to global healthcare systems, particularly impacting individuals with pre-existing conditions like hypertension. This study sought to assess the impact of the antihypertensive medications, losartan and enalapril maleate on SARS-CoV-2 infected cells. Vero E6 cells were infected and treated in vitro, evaluating cell viability via the MTT colorimetric assay.

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Graphene nanoplatelets (UGZ-1004) are emerging as a promising biomaterial in regenerative medicine. This study comprehensively evaluates UGZ-1004, focusing on its physical properties, cytotoxicity, intracellular interactions, and, notably, its effects on mesenchymal stem cells (MSCs). UGZ-1004 was characterized by lateral dimensions and layer counts consistent with ISO standards and demonstrated a high carbon purity of 0.

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Background: Health care is not exempt from harboring social inequalities, including in those countries with a universal public system. The objective was to ascertain whether the population's assessment of primary care (PC) changed between 2006 and 2016, the decade that included the economic crisis of 2008, and also if it exhibited patterns of social inequality in Barcelona (Spain).

Methods: This was a cross-sectional study using Barcelona Health Surveys 2006 and 2016.

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Background: Mindfulness-based cognitive therapy (MBCT) includes regular home practice of mindfulness exercises as a key means of cultivating mindfulness. Although there are instruments available for measuring homework adherence following cognitive behavioral therapy (CBT), little is known about measuring homework practice in MBCT studies for sexual dysfunction.

Aim: In this review we sought to investigate which items and instruments are the most used for the assessment of homework adherence in studies evaluating MBCT for the treatment of female sexual dysfunction (FSD).

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Article Synopsis
  • Autism Spectrum Disorder (ASD) is a lifelong condition impacting communication and behavior, with studies indicating a link to environmental pollutants.
  • A systematic review and meta-analysis of 27 studies involving over 1.2 million participants showed significant associations between several pollutants (like nitrogen dioxide, copper, and polychlorinated biphenyls) and increased incidence of ASD.
  • Findings suggest that exposure to certain environmental pollutants correlates positively with ASD development, highlighting a potential area for further research and public health consideration.
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Synthesis and preclinical evaluation of [F]AlF-NODA-MP-C6-CTHRSSVVC as a PET tracer for CD163-positive tumor-infiltrating macrophages.

Nucl Med Biol

December 2024

Dept. of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands. Electronic address:

Positron emission tomography (PET) can provide information about tumor-associated macrophage (TAM) infiltration, as long as a suitable tracer is available. This study aimed to evaluate the radiolabeled peptide [F]AlF-NODA-MP-C6-CTHRSSVVC as a potential PET tracer for imaging of the CD163 receptor, which is expressed on M2-type tumor-associated macrophages. The conjugated peptide NODA-MP-C6-CTHRSSVVC was labeled with aluminum [F]fluoride.

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In Reply.

Int J Oral Maxillofac Surg

January 2025

Division of Maxillofacial Surgery, Department of Surgery, AZ Sint-Jan Brugge-Oostende AV, Bruges, Belgium.

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The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has posed unprecedented challenges to global health systems, particularly among vulnerable populations such as the elderly. Understanding the interplay between anthropometric markers, molecular profiles, and disease severity is crucial for effective clinical management and intervention strategies. We conducted a cohort study comprising 43 elderly COVID-19 patients admitted to São Lucas Hospital, PUCRS, Brazil.

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The escalating emissions of CO into the atmosphere require the urgent development of technologies aimed at mitigating environmental impacts. Among these, aqueous amine solutions and polymeric membranes, such as cellulose acetate and polyimide are commercial technologies requiring improvement or substitution to enhance the economic and energetic efficiency of CO separation processes. Ionic liquids and poly(ionic liquids) (PILs) are candidates to replace conventional CO separation technologies.

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Increasing evidence indicates that neuroinflammation, oxidative stress, and neurotrophic factors play a key role in the pathophysiology of major depressive disorder (MDD). In addition, the attenuation of inflammatory response has been considered a putative mechanism for MDD treatment. PT-31 is an imidazolidine derivative and a putative α₂-adrenoceptor agonist that has previously demonstrated antinociceptive activity.

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Article Synopsis
  • Scientists are studying special immune cells called CD8 T cells that can help fight tumors, especially in brain cancer called glioblastoma multiforme (GBM).
  • They looked at mutations in important proteins like EGFR, IDH1, PTEN, and TP53 to see if these changes affect how the immune system recognizes and attacks cancer cells.
  • The researchers found specific changes in the TP53 protein that could help create new treatments, like vaccines, to boost the immune response against GBM.
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Purpose: Sex differences play a crucial role in understanding vulnerability to opioid addiction, yet there have been limited preclinical investigations of this effect during the transition from adolescence to adulthood. The present study compared the behaviors of male and female rodents in response to fentanyl treatment and targeted molecular correlates in the striatum and medial prefrontal cortex.

Materials And Methods: Thirty adolescent C57BL/6J mice underwent a 1-week fentanyl treatment with an escalating dose.

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Radiotherapy (RT) is the established noninvasive treatment for glioblastoma (GBM), a highly aggressive malignancy. However, its effectiveness in improving patient survival remains limited due to the radioresistant nature of GBM. Metal-based nanostructures have emerged as promising strategies to enhance RT efficacy.

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It has been widely established that the characterization of extracellular vesicles (EVs), particularly small EVs (sEVs), shed by different cell types into biofluids, helps to identify biomarkers and therapeutic targets in neurological and neurodegenerative diseases. Recent studies are also exploring the efficacy of mesenchymal stem cell-derived extracellular vesicles naturally enriched with therapeutic microRNAs and proteins for treating various diseases. In addition, EVs released by various neural cells play a crucial function in the modulation of signal transmission in the brain in physiological conditions.

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After the Zika virus (ZIKV) epidemic in Brazil, ZIKV infections were linked to damage to the central nervous system (CNS) and congenital anomalies. Due to the virus's ability to cross the placenta and reach brain tissue, its effects become severe, leading to Congenital Zika Syndrome (CZS) and resulting in neuroinflammation, microglial activation, and secretion of neurotoxic factors. The presence of ZIKV triggers an inadequate fetal immune response, as the fetus only has the protection of maternal antibodies of the Immunoglobulin G (IgG) class, which are the only antibodies capable of crossing the placenta.

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Background: Calcium hydroxyapatite (CaHA) dermal filler has been increasingly used in facial aesthetic procedures.

Objective: To investigate clinical and histological changes associated with calcium hydroxyapatite (CaHA) dermal filler in the orofacial region.

Materials And Methods: Forty-eight female Wistar rats were divided into CaHA and control groups.

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