Publications by authors named "Bruna Ferreira"

Background: Uncorrected refractive errors and amblyopia are reported as the two main causes of childhood visual impairment and blindness worldwide. Our purpose was to evaluate refractive status, ocular alignment and effective refractive error coverage (eREC) of school-aged children from low-income areas of Sao Paulo city, Brazil.

Methods: Data from the "Ver na Escola" Project were used for the current study.

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Small extracellular vesicles (EVs) play a pivotal role in intercellular communication across various physiological and pathological contexts. Despite their growing significance as disease biomarkers and therapeutic targets in biomedical research, the lack of reliable isolation techniques remains challenging. This study characterizes vesicles that were isolated from conditioned culture media (CCM) sourced from three myeloma cell lines (MM.

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Article Synopsis
  • Compounds with thiophene are used in applications like electrical conduction, needing specific shapes for optimal performance.
  • Chalcogen bonding can influence the shape of certain thiophene-based compounds, particularly with halogen interactions, common in agrochemicals and pharmaceuticals.
  • Quantum chemical analyses show that while halogen-thiophene interactions exist, they are not effective for controlling conformational changes due to strong repulsive forces.
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This study aimed to provide an updated critical review of the nutritional, therapeutic, biotechnological, and environmental aspects involved in the exploitation of Willd and its biowastes. Special attention was devoted to investigations of the therapeutic and nutritional properties of different parts and varieties of quinoa as well as of the use of the biowaste resulting from the processing of grain. Studies published from 2018 onward were prioritized.

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Post-traumatic stress disorder (PTSD) is a psychiatric condition characterized by persistent fear responses and altered neurotransmitter functioning due to traumatic experiences. Stress predominantly affects glutamate, a neurotransmitter crucial for synaptic plasticity and memory formation. Activation of the N-Methyl-D-Aspartate glutamate receptors (NMDAR) can trigger the formation of a complex comprising postsynaptic density protein-95 (PSD95), the neuronal nitric oxide synthase (nNOS), and its adaptor protein (NOS1AP).

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Carnosine is composed of β-alanine and L-histidine and is considered to be an important neuroprotective agent with antioxidant, metal chelating, and antisenescence properties. However, children with serum carnosinase deficiency present increased circulating carnosine and severe neurological symptoms. We here investigated the in vitro effects of carnosine on redox and mitochondrial parameters in cultured cortical astrocytes from neonatal rats.

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  • - The study investigates the role of immune checkpoint PD-L1 in Myelodysplastic Syndromes (MDS), a bone marrow disorder linked to genetic and immune issues, and its potential impact on tumor growth and prognosis.
  • - Results show that patients with dyserythropoiesis have higher PD-L1 expression, and those with MDS-EB2 exhibit significant upregulation compared to MDS-EB1, suggesting a correlation between PD-L1 levels and disease severity.
  • - The findings indicate that elevated PD-L1 expression may lead to poorer outcomes in MDS patients, highlighting the need for further research on anti-PD-L1 therapies for high-risk cases.
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This descriptive prospective study investigated the clinical features and treatment adherence of individuals who started the treatment for Pulmonary tuberculosis (TB) during the COVID-19 pandemic in São Luís. Thirty-six TB patients and thirty-five age/sex-matched individuals were recruited between January 2021 and January 2022. The clinical features, sociodemographic information, and serum were obtained at the diagnosis time.

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Background: Incorrectly positioned gastric tubes occur in approximately 60% of infants hospitalized in the neonatal intensive care unit (NICU), increasing the risk of potentially serious complications.

Purpose: To compare 3 methods of determining gastric tube insertion length in infants in the NICU.

Methods: In this randomized triple-blind clinical trial, 179 infants admitted to the NICU were randomized to have their gastric tube insertion length determined by 1 of 3 methods: (1) the nose, earlobe, mid-umbilicus (NEMU) method, (2) a weight-based method, or (3) an age-related height-based (ARHB) method.

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Background: The CLOSE study group proposes an updated surgical classification for large macular holes based on a systematic review of new treatments. Recently, many new techniques have been introduced to treat large full-thickness macular holes (FTMH); although the indications are not clear. An updated surgical classification is needed to help surgical decision-making.

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  • - Multiple myeloma (MM) is a common blood cancer marked by the growth of abnormal plasma cells in the bone marrow and a supportive microenvironment that allows this growth.
  • - Research indicates that communication between myeloma cells and immune cells, particularly through tumor cell-derived extracellular vesicles (EV), plays a significant role in how MM develops and affects the immune system.
  • - In experiments with mice, it was found that while conditioning with myeloma cell-derived EV did not trigger disease symptoms, it did enhance immune suppression in the bone marrow, highlighting the importance of these EV in altering the immune microenvironment in MM.
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Multiple myeloma (MM) is a hematological malignancy of clonal antibody-secreting plasma cells (PCs). MM diagnosis and risk stratification rely on bone marrow (BM) biopsy, an invasive procedure prone to sample bias. Liquid biopsies, such as extracellular vesicles (EV) in peripheral blood (PB), hold promise as new minimally invasive tools.

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Historically, Cannabis is one of the first plants to be domesticated and used in medicine, though only in the last years the amount of Cannabis-based products or medicines has increased worldwide. Previous preclinical studies and few published clinical trials have demonstrated the efficacy and safety of Cannabis-based medicines in humans. Indeed, Cannabis-related medicines are used to treat multiple pathological conditions, including neurodegenerative disorders.

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We analyze potential Late Holocene metal contamination along a sediment core collected in the distal zone of Ria de Vigo (North Spain). Statistical treatment of the dataset based on a multiproxy approach enabled us to identify and disentangle factors influencing the depositional processes and the preservation of the records of this activity in the area over the last ≈3000 years BP. Some layers of the analyzed core have significant enrichment in Cu and a moderate enrichment in Ag, Mo, As, Sb, S, Zn, Ni, Sn, Cd, Cr, Co, Pb, and Li.

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Purpose: To describe a novel optical coherence tomography (OCT) finding in a case of bilateral diffuse uveal melanocytic proliferation (BDUMP) and to report the clinical response to plasmapheresis.

Observations: We report the case of a 54-year-old man who was being treated with adjuvant immune checkpoint inhibitors for metastatic renal cell carcinoma. He had suffered from bilateral progressive vision loss without ocular pain.

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Despite the importance of pain as a warning physiological system, chronic neuropathic pain is frequently caused by damage in the nervous system, followed by persistence over a long period, even in the absence of dangerous stimuli or after healing of injuries. Chronic neuropathic pain affects hundreds of millions of adults worldwide, creating a direct impact on quality of life. This pathology has been extensively characterized concerning its cellular and molecular mechanisms, and the endocannabinoid system (eCS) is widely recognized as pivotal in the development of chronic neuropathic pain.

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User experience (UX) is a quality aspect that considers the emotions evoked by the system, extending the usability concept beyond effectiveness, efficiency, and satisfaction. Practitioners and researchers are aware of the importance of evaluating UX. Thus, UX evaluation is a growing field with diverse approaches.

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 (a) To identify the prevalence of current musculoskeletal pain and injury in the last year and (b) to verify the association of the presence of current pain and the history of injury with demographic, sports, and health characteristics in skateboarders.  A cross-sectional observational study was conducted with 64 skateboarders who answered a questionnaire addressing demographic, sports practice, and health characteristics. The Fisher exact test verified the association of these characteristics with the presence of current pain and with the report of injury in the last year.

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Objective: To construct and validate an algorithm for transitional care for caregivers of dependent older adults.

Method: This was a methodological study developed in three phases: a literature review, designing an algorithm, and its validation by a peer panel with twenty-seven experts selected according to pre-defined inclusion criteria.

Results: The algorithm predicted interventions in transitional care (hospital stay, at discharge, and 30 days at home post-discharge) aimed at the exercise of the caregiver role; needs assessment; training in care management of dependent older adults and management of self-care, and ensuring continuity of care (of older adults and caregivers).

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Article Synopsis
  • The study explores how maternal omega-3 polyunsaturated fatty acids (n-3PUFA) influence the endocannabinoid system (ECS) and synaptic markers in rat offspring during early development.
  • Maternal n-3 deficiency reduced CB1 receptor levels and increased CB2 receptor levels in both mothers and their neonates, while supplementation increased n-3-derived endocannabinoids and key protein markers associated with synaptic plasticity.
  • The findings suggest that the amount of n-3PUFA in a mother's diet can significantly affect the ECS and synaptic functions in the developing brain of offspring.
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Matos, F, Ferreira, B, Guedes, J, Saavedra, F, Reis, VM, and Vilaça-Alves, J. Effect of rest interval between sets in the muscle function during a sequence of strength training exercises for the upper body. J Strength Cond Res 35(6): 1628-1635, 2021-The objective of this study was to observe the ideal recovery time between sets and exercises, for both chest and back, which allowed for maintaining muscle function with the initial load previously established.

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Undernutrition is characterized by an imbalance of essential nutrients with an insufficient nutritional intake, a disorder in which the clinical manifestations in most cases are the result of the economic and social context in which the individual lives. In 1990, the study by the medical and humanitarian Naíde Teodósio (1915-2005) and coworkers, which formulated the Regional Basic Diet (RBD) model for inducing undernutrition, was published. This diet model took its origin from the observation of the dietary habits of families that inhabited impoverished areas from the Pernambuco State.

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Despite the improvement of patient's outcome obtained by the current use of immunomodulatory drugs, proteasome inhibitors or anti-CD38 monoclonal antibodies, multiple myeloma (MM) remains an incurable disease. More recently, the testing in clinical trials of novel drugs such as anti-BCMA CAR-T cells, antibody-drug conjugates or bispecific antibodies broadened the possibility of improving patients' survival. However, thus far, these treatment strategies have not been able to steadily eliminate all malignant cells, and the aim has been to induce a long-term complete response with minimal residual disease (MRD)-negative status.

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Multiple myeloma (MM) is one of the most prevalent hematological cancers worldwide, characterized by the clonal expansion of neoplastic plasma cells in the bone marrow (BM). A combination of factors is implicated in disease progression, including BM immune microenvironment changes. Increasing evidence suggests that the disruption of immunological processes responsible for myeloma control ultimately leads to the escape from immune surveillance and resistance to immune effector function, resulting in an active form of myeloma.

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