Publications by authors named "Nizyara Costa da Silva"

Human cases of arboviral disease transmitted by mosquitoes are increasing worldwide and spreading to new areas of the United States. These diseases continue to re-emerge, likely due to changes in vector ecology, urbanization, human migration, and larger range of climatic suitability. Recent shifts in landscape and weather variables are predicted to impact the habitat patterns of urban mosquitoes such as and .

View Article and Find Full Text PDF
Article Synopsis
  • * The condition starts when the transplanted cells recognize the recipient's body as foreign, leading to inflammatory responses and potential organ damage.
  • * This review covers the latest understanding of cGvHD's development, diagnosis, and treatment options, highlighting new therapies and insights from clinical research and expert opinions.
View Article and Find Full Text PDF

Background: Mining occupies a prominent place in Brazil, which, if observed, means that one must work with the contingencies that arise from its activity. Mining disasters, such as those in Mariana and Brumadinho, exemplify the impact on the health system and are models for similar situations, so the study sought to investigate the impact of these disasters on hospital admissions in the Brazilian public health system.

Methods: Through segmented regression, we sought to assess possible changes in the variables HAA (authorized hospital admissions), total admission value, and mortality rate in Mariana and Brumadinho.

View Article and Find Full Text PDF
Article Synopsis
  • * The research found that tissue samples from patients showed strong IFN-I (a type of immune response) activity and signs of inflammation, even when the virus was only minimally present in biopsies.
  • * Additionally, an experiment using hamsters demonstrated that while the virus was active in the lungs, local IFN-I responses occurred in other areas (like toes) without the body developing traditional immunity to the virus, suggesting a potential viral trigger for some pernio cases.
View Article and Find Full Text PDF

The mosquito is a prominent vector for arboviruses, but the breadth of mosquito viruses that infects this specie is not fully understood. In the broadest global survey to date of over 200 small RNA samples, we detected viral small interfering RNAs (siRNAs) and Piwi interacting RNAs (piRNAs) arising from mosquito viruses. We confirmed that most academic laboratory colonies of lack persisting viruses, yet two commercial strains were infected by a novel tombus-like virus.

View Article and Find Full Text PDF

transmitted arboviral human cases are increasing worldwide and spreading to new areas of the United States of America (USA). These diseases continue to re-emerge likely due to changes in vector ecology, urbanization, human migration, and larger range of climatic suitability. Recent shifts in landscape and weather variables are predicted to impact the habitat patterns of urban mosquitoes such as and .

View Article and Find Full Text PDF

Introduction: TAM receptor-mediated efferocytosis plays an important function in immune regulation and may contribute to antigen tolerance in the lungs, a site with continuous cellular turnover and generation of apoptotic cells. Some studies have identified failures in efferocytosis as a common driver of inflammation and tissue destruction in lung diseases. Our study is the first to characterize the function of the TAM receptors, Axl and MerTk, in the innate immune cell compartment, cytokine and chemokine production, as well as the alveolar macrophage (AM) phenotype in different settings in the airways and lung parenchyma.

View Article and Find Full Text PDF

Female mosquitoes undergo multiple rounds of reproduction known as gonotrophic cycles (GC). A gonotrophic cycle spans the period from blood meal intake to egg laying. Nutrients from vertebrate host blood are necessary for completing egg development.

View Article and Find Full Text PDF

Functional salivary glands (SG) are essential for maintaining oral health, and salivary dysfunction is a persistent major clinical challenge. Several cancer therapies also have off-target effects leading to SG dysfunction. Recent advances highlight the role of SG immune populations in homeostasis, dysfunction and gland regeneration.

View Article and Find Full Text PDF
Article Synopsis
  • Obligate blood-feeding insects, like the kissing bug Rhodnius prolixus, use their internal taste sensilla in the pharynx to assess the quality of the blood they ingest for survival.
  • The study identified eight taste sensilla in the pharyngeal organ, which contain neurons that respond to various gustatory stimuli such as salt and caffeine, indicating their role in detecting food quality.
  • RNA sequencing revealed several sensory-related gene families in the pharyngeal organ, and RNA interference studies indicated that specific channels are necessary for processing the preferred feeding solutions.
View Article and Find Full Text PDF

Where a female mosquito lays her eggs creates the conditions for reproductive success. Here we identify a communal behavior among ovipositing female mosquitoes. When choosing equal breeding sites, gravid Aedes aegypti aggregate more often than expected.

View Article and Find Full Text PDF

Resorption within cortices of long bones removes excess mass and damaged tissue and increases during periods of reduced mechanical loading. Returning to high-intensity exercise may place bones at risk of failure due to increased porosity caused by bone resorption. We used point-projection X-ray microscopy images of bone slices from highly loaded (metacarpal, tibia) and minimally loaded (rib) bones from 12 racehorses, 6 that died during a period of high-intensity exercise and 6 that had a period of intense exercise followed by at least 35 days of rest prior to death, and measured intracortical canal cross-sectional area (Ca.

View Article and Find Full Text PDF

Introduction: Accidents at work are events that endanger the health and life of workers. They are considered a public health problem, being the object of studies and actions in the Brazilian health system. The collapsed of the ore tailings dam in the municipality of Brumadinho, Brazil, in January 2019, shocked the world due to the proportion of environmental and human damage caused.

View Article and Find Full Text PDF

Background: Culex quinquefasciatus, a cosmopolitan, domestic, and highly anthropophilic mosquito, is a vector of pathogenic arboviruses such as West Nile virus and Rift Valley virus, as well as lymphatic filariasis. The current knowledge on its reproductive physiology regarding vitellogenin expression in different tissues is still limited.

Objectives: In this study, we analysed the transcriptional profiles of vitellogenin genes in the fat body and ovaries of C.

View Article and Find Full Text PDF

Female mosquitoes undergo multiple rounds of reproduction, known as gonotrophic cycles. These cycles span the period from blood meal intake to oviposition. Understanding how reproductive success is maintained across gonotrophic cycles allows for the identification of molecular targets to reduce mosquito population growth.

View Article and Find Full Text PDF

Immunotherapy strategies aim to mobilize immune defenses against tumor cells by targeting mainly T cells. Co-inhibitory receptors or immune checkpoints (ICPs) (such as PD-1 and CTLA4) can limit T cell receptor (TCR) signal propagation in T cells. Antibody-based blocking of immune checkpoints (immune checkpoint inhibitors, ICIs) enable escape from ICP inhibition of TCR signaling.

View Article and Find Full Text PDF

The increased resistance of microorganisms to antimicrobial drugs makes it necessary to search for new active compounds, such as chalcones. Their simple chemical structure makes them molecules easy to synthesize. Therefore, the aim of this study was to evaluate the antimicrobial and potentiating activity of antibiotics and antifungals by synthetic chalcones against strains of Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Candida tropicalis.

View Article and Find Full Text PDF

, , and are the primary bacteria that cause clinical infections, such as urinary and intestinal infections, pneumonia, endocarditis, and sepsis. Bacterial resistance is an innate natural occurrence in microorganisms, resulting from mutations or the lateral exchange of genetic material. This serves as evidence for the association between drug consumption and pathogen resistance.

View Article and Find Full Text PDF

Dengue viruses (DENVs) are mosquito-borne flaviviruses causing millions of human infections each year and pose a challenge for public health systems worldwide. Aedes aegypti is the principal vector species transmitting DENVs to humans. Controlling Ae.

View Article and Find Full Text PDF

Purpose: To assess the capability of deep convolutional neural networks to classify anatomical location and projection from a series of 48 standard views of racehorse limbs.

Materials And Methods: Radiographs ( = 9504) of horse limbs from image sets made for veterinary inspections by 10 independent veterinary clinics were used to train, validate and test (116, 40 and 42 radiographs, respectively) six deep learning architectures available as part of the open source machine learning framework PyTorch. The deep learning architectures with the best top-1 accuracy had the batch size further investigated.

View Article and Find Full Text PDF

Background: Ameloblastoma (AME) is characterized by a locally invasive growth pattern. In an attempt to justify the aggressiveness of neoplasms, the investigation of the role of stem cells has gained prominence. The SOX-2, NANOG and OCT4 proteins are important stem cell biomarkers.

View Article and Find Full Text PDF

Triple-negative breast cancer (TNBC) represents 15-25 % of the new breast cancer cases diagnosed worldwide every year. TNBC is among the most aggressive and worst prognosis breast cancer, mainly because targeted therapies are not available. Herein, we developed a magnetic theranostic hybrid nanovehicle for targeted treatment of TNBC through pH-triggered tumour associated macrophages (TAMs) targeting.

View Article and Find Full Text PDF

Background: Mechanical factors are primary complications that justify early removal of a peripherally inserted central catheter, and thrombotic catheter occlusion is the most critical mechanical complication associated with loss of device functionality. Studies have investigated these factors in adult patients, but findings are not directly applicable to newborns. Therefore, systematic reviews focusing on this population are necessary for consolidated evidence to aid clinical practice.

View Article and Find Full Text PDF

Zika virus (ZIKV) may cause febrile illness and neurological damage, such as microcephaly in fetuses. ZIKV is transmitted to humans by Aedes aegypti, a nearly cosmopolitan mosquito. Understanding the virus-vector molecular interactions has been promising to enhance the knowledge towards disease mitigation.

View Article and Find Full Text PDF