555,507 results match your criteria: "Brazil; Hospital das Clinicas HCFMUSP[Affiliation]"

Unlabelled: Hereditary cerebellar ataxias are a diverse group of neurodegenerative disorders characterized by progressive cerebellar dysfunction and possible multisystemic involvement. While significant advancements have been made in understanding autosomal dominant cerebellar ataxias (ADCAs), autosomal recessive cerebellar ataxias (ARCAs) remain less extensively investigated than autosomal dominant ataxias, particularly in regions with high consanguinity. This study aimed to characterize 57 patients with ARCAs in Ceará, northeast Brazil.

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Purpose: We aimed to conduct a systematic review and meta-analysis comparing the outcomes of subdermal implants and levonorgestrel intrauterine system (LNG-IUS) in reproductive-aged women.

Methods: In April 2024, we searched Pubmed, Embase and Cochrane trials using the search terms: "etonogestrel", "levonorgestrel" and "randomized controlled trials". We identified 2862 results comparing the LNG-IUS to subdermal implants.

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[F]FDG PET/CT is the most widely used PET radiopharmaceutical in oncology, but it is not exempt of diagnostic limitations. FAPI have emerged as a great tool in the management of several different solid tumours in which [F]FDG is not able to provide enough information. The aim of this work was to evaluate the available evidence on diagnostic and therapeutic applications of PET/CT with FAPI radiopharmaceuticals.

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Arbuscular mycorrhizal fungi (AMF) are obligate symbionts that help plants cope with biotic and abiotic stresses in soil ecosystems. However, AMF communities are highly sensitive to land use changes. In this study, we sampled soils from three environments (natural ecosystem, pasture, and deforested site) to characterize the AMF community (spores' abundance, richness, Shannon's diversity, and Simpson's dominance) and soil chemical properties (soil pH, soil organic carbon, available phosphorus, and total nitrogen).

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Background: Postoperative pain remains a common concern following ventral hernia repair (VHR), especially for open procedures. We aim to assess the effectiveness of the Transversus Abdominis Plane (TAP) block for the management of postoperative pain following VHR.

Methods: Cochrane, EMBASE, and PubMED, MEDLINE, and Web of Science were systematically searched for studies comprising adults undergoing VHR with preoperative TAP block, compared to placebo and epidural analgesia.

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The rapid spread of COVID-19 have overwhelmed health systems, especially in the care of chronic disease such as tuberculosis and diabetes. The objective of the study was to analyze the magnitude and relevance of tuberculosis-diabetes and diabetes-COVID-19 comorbidities in spatial risk areas and their factors associated with unfavorable outcomes in the Brazilian population between 2020 and 2022. An ecological study was carried out in Brazilian municipalities.

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Sample observed effects: enumeration, randomization and generalization.

Sci Rep

March 2025

Division of Biosciences, University College London, Gower Street, WC1E, London, United Kingdom.

We study generalization of intervention effects across several simulated and real-world samples. We start by formulating the concept of the 'background' of a sample effect observation. We then formulate conditions for effect generalization based on a sample's set of (observed and unobserved) backgrounds.

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Introduction: Videolaryngoscopy improves tracheal intubation outcomes compared with direct laryngoscopy in various scenarios. However, the range of videolaryngoscope designs makes it challenging to identify the most effective device. We conducted a systematic review and network meta-analysis to compare different laryngoscope designs when used for tracheal intubation of adults under general anaesthesia.

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Statement Of Problem: Evidence regarding standardization of finishing and polishing protocols for 3-dimensionally (3D) printed interim resins is sparse.

Purpose: The purpose of this in vitro study was to evaluate the influence of print layer thickness and aging on the flexural strength, cell adhesion, and surface roughness of a 3D printed resin for interim crowns submitted to different finishing and polishing protocols.

Material And Methods: A total of 150 bars were printed (Flash Forge Foto 6.

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Role of low-level alternating current and impedance for enhancing microalgae biomass and lipid production.

J Biosci Bioeng

March 2025

Moacyr D. de Moura-Costa Biotechnology Laboratory, Institute of Health Sciences, Federal University of Bahia - UFBA, Av. Reitor Miguel Calmon, S/N, Salvador, BA 40110-100, Brazil. Electronic address:

Microalgae hold significant potential for producing value-added bioproducts in pharmaceutical, cosmetic, food, and biofuel industries, with a global market value estimated at US$ 11.8 billion in 2023. Innovations in culturing systems, such as electric stimulation, aim to enhance growth performance, as it can improve cellular processes, including nutrient uptake and lipid accumulation.

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Background: Medical adhesives are potentially harmful to the skin, depending on the patient's condition, the adhesive agent and the adhesive application and removal technique.

Aim: The objective of the study was to determine the incidence, characteristics and influencing factors of medical adhesive-related skin injury from the indwelling urinary catheter attachment in critically ill patients.

Study Design: This is a longitudinal study.

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Objective: To describe the clinical spectrum of pediatric and adolescent patients infected with Chikungunya.

Methods: Cross-sectional study with patients aged 0 to 17 years hospitalized with a Chikungunya Fever diagnosis in Ceará, in 2017. Data were collected on the clinical manifestations associated with the condition; significant differences were considered when p < 0.

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Introduction: Vulvar squamous cell carcinoma (VSCC) is a rare gynecological tumor with limited treatment options for advanced stages. Current chemotherapy, adapted from cervical cancer protocols, often results in poor outcomes. This scoping review evaluates the efficacy and safety of immunotherapy and targeted therapies in advanced VSCC.

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Gastric ulcer (GU) is a disease characterized by ulcerative lesions on the surface of the stomach mucosa caused mainly by health-related conditions, non-steroidal anti-inflammatory drugs (NSAIDs) use, and Helicobacter pylori infections. The treatment for this disease requires that the drug remains in contact with the site of action, however, the residence time of conventional dosage forms in this organ is limited due to gastric emptying. Curcumin (CUR) is a compound obtained from the rhizomes of the Curcuma longa plant and has been used in traditional Indian medicine for many centuries.

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Intralesional (IL) treatment of cutaneous leishmaniasis with pentavalent antimonials has greatly reduced the systemic toxicity imposed by the conventional intramuscular and intravenous injections. Nevertheless, therapeutic failure with antimonials can occur due to drug resistance and/or short retention in the inflamed skin. Here we evaluated the safety and efficacy of IL treatment with injectable amphotericin B (AmB), a powerful antileishmanial drug that is less prone to drug resistance, but due to its amphiphilic nature is formulated with the ionic detergent sodium deoxycholate (Deox).

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Kalanchoe species products are commercially available in local markets and by internationally accessible online retailers and may exhibit quality issues because of misidentification from similar common names and anatomical similarities among related species used as feedstock. This study proposes an approach using UPLC-MS/MS and HPTLC, coupled with morphoanatomical analysis to establish chemical composition pattern data for five Kalanchoe species. Subsequently, the methods were validated by analyzing commercial products purported to contain 100% Kalanchoe extract.

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Low-dose irradiation of the gut improves the efficacy of PD-L1 blockade in metastatic cancer patients.

Cancer Cell

March 2025

Faculté de Médecine, Université Paris-Saclay, 94270 Kremlin-Bicêtre, France; Department of Radiation Oncology, Gustave Roussy Cancer Campus (GRCC), 94805 Villejuif, France; INSERM U1030, Radiothérapie Moléculaire et Innovations Thérapeutiques, Gustave Roussy Cancer Campus (GRCC), 94805 Villejuif, France.

The mechanisms governing the abscopal effects of local radiotherapy in cancer patients remain an open conundrum. Here, we show that off-target intestinal low-dose irradiation (ILDR) increases the clinical benefits of immune checkpoint inhibitors or chemotherapy in eight retrospective cohorts of cancer patients and in tumor-bearing mice. The abscopal effects of ILDR depend on dosimetry (≥1 and ≤3 Gy) and on the metabolic and immune host-microbiota interaction at baseline allowing CD8 T cell activation without exhaustion.

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Background: Ultra-processed foods account for >50% of total energy consumed among U.S. individuals and may be a source of poly- and perfluoroalkyl substances (PFAS) exposure - chemicals linked with cancer/cardiometabolic disorders.

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In this study, we examine the male reproductive apparatus and sperm morphology of Thaumastocoris peregrinus (Thaumastocoridae), a pest of Eucalyptus plantations, to explore its phylogenetic implications using light and transmission electron microscopy. The reproductive apparatus comprises paired testes with three follicles each, dilated efferent ducts acting as seminal vesicles, paired accessory glands, and ejaculatory duct that connects with an aedeagus. Sperm are filiform, around 465 µm long, with short, fusiform nuclei (< 6 µm) and an acrosome observable only under TEM.

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Background: Booster doses of COVID-19 vaccines are required to maintain protection against SARS-CoV-2. However, real-world evidence from South America, needed to inform optimal vaccination strategies, is lacking. Herein, we present the final analysis of REFORCO-Brazil, a large-scale assessment of relative vaccine effectiveness (rVE) of second boosters (vs first boosters) against hospitalization with COVID-19.

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Spatially resolved composition of bovine dental enamel in permanent incisors.

Arch Oral Biol

February 2025

Department of Morphology, Health Sciences Center, Federal University of Paraiba, João Pessoa Paraiba, Brazil. Electronic address:

Objective: To quantify component volumes (mineral, organic, total water, firmly and loosely bound water volumes, and permeability) at histological points in bovine enamel and investigate their association with bovine enamel's optical behavior and fracture toughness (FT).

Design: In vitro, cross-sectional, and experimental study. Longitudinal ground sections of ten permanent bovine incisors were analyzed using microradiography, polarizing microscopy, microhardness tester, and confocal laser fluorescence microscopy (CLFM).

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Personal care products and pharmaceuticals, namely sodium diclofenac (DCF), octocrylene (OCT), and sodium dodecyl sulfate (SDS), are relevant chemical products classified as contaminants of emerging concern (CECs). They can enter aquatic ecosystems from various anthropogenic sources. This study examined the acute and chronic toxic effects of exposure to these substances, individually and in binary mixtures (OCT + SDS, SDS + DCF, DCF + SDS).

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Aims: To investigate the effects of non-surgical periodontal treatment on the levels of cytokines, sIgA, antimicrobial peptides, oxidative and antioxidative agents in comparison between patients with and without diabetes.

Methods: A case-control study that included patients (n = 45) with periodontitis who have or do not have diabetes. Cytokine concentrations in crevicular gingival fluid (GCF) and saliva were determined using LUMINEX and ELISA assays, respectively.

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Brazilin reduces methicillin-resistant Staphylococcus aureus virulence and pathogenicity by decreasing the secretion of the α-hemolysin.

Phytomedicine

March 2025

Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563003, China; School of Laboratory Medicine, Zunyi Medical University, Zunyi Guizhou 563006, China. Electronic address:

Background: Methicillin-resistant Staphylococcus aureus (MRSA) is a super-resistant bacterium with strong pathogenicity, causing broad range of infections in various tissues. α-Hemolysin (Hla) is the main virulence factor of S. aureus.

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