Acquired pellicle and biofilm engineering with CaneCPI-5: Insights from proteomic and microbiomics analysis.

OBJECTIVE: In this in vivo proof-of-concept study, acquired pellicle engineering was implemented to promote alterations in the protein composition of the acquired enamel pellicle (AEP) and the bacterial composition of the dental biofilm after treatment with Sugarcane cystatin (CaneCPI-5). DESIGN: After prophylaxis, 10 volunteers rinsed (10 mL, 1 min) with the following solutions: 1) deionized water (H2O- negative control or 2) 0.1 mg/mL CaneCPI-5. The AEP and biofilm were formed along 2 or 3 h, respectively. The AEP was collected with electrode filter papers soaked in 3 % citric acid. After protein extraction, samples were analyzed by quantitative shotgun label-free proteomics. The biofilm microbiome was collected with a dental curette. The DNA was extracted, amplified, and analyzed by 16S-rRNA Next Generation Sequencing (NGS). RESULTS: Treatment with CaneCPI-5 increased several proteins with antimicrobial, acid-resistance, affinity for hydroxyapatite, structural and calcium binding properties, such as Cysteine-rich-3 (6-fold-p = 0.03), Cystatin-B (5.5-fold-p < 0.01), Neutrophil-defensin 1 (4.7-fold-p < 0.01), Mucin (3.9-fold-p < 0.01), Immunoglobulin-heavy-constant (3.8-fold-p < 0.01) and Lactotransferrin (2.8-fold-p < 0.01). Microbiome revealed that several commensal bacteria had their abundance increased after rinsing with CaneCPI-5, such as Corynebacterium and Neisseria, while Streptococcus and Prevotella nigrescens were decreased. The results indicate the efficiency of CaneCPI-5 in promoting beneficial changes in the AEP and biofilm, making this phytocystatin a potential target for incorporation into dental products. CONCLUSION: Cane demonstrated the capability to alter the protein composition of the acquired enamel pellicle (AEP) and the initial colonizers of the biofilm, enhancing the presence of proteins and bacteria crucial for dental protection.

In vitro effect of TiF4/NaF solution on the development of radiation-induced dentin caries.

OBJECTIVE: To evaluate the protective effect of an experimental solution containing TiF4/NaF on the development of radiation-induced dentin caries lesions. METHODOLOGY: bovine root samples were irradiated (70Gy) and distributed as following (n=12/group): Commercial Saliva (BioXtra), NaF (500 ppm F-), TiF4 (500 ppm F), TiF4/NaF (TiF4: 300 ppm F-, NaF: 190 ppm F-), and Phosphate buffer solution (PBS, negative control). Biofilm was produced using biofilm from irradiated patients and McBain saliva (0.2% of sucrose, at 37oC and 5% CO2) for five days. The treatments were applied 1x/day. Colony-forming units (CFU) were counted and demineralization was quantified by transversal microradiography. The ANOVA/Tukey test was applied for all parameters. RESULTS: All treatments reduced CFU for total microorganisms. TiF4 reduced Lactobacillus sp. (7.04±0.26 log10 CFU/mL) and mutans streptococci (7.18±0.28) CFU the most, when compared to PBS (7.58±0.21 and 7.75±0.17) and followed by NaF (7.12±0.31 and 7.34±0.22) and TiF4/NaF (7.16±0.35 and 7.29± 0.29). TiF4 and Commercial saliva showed the lowest integrated mineral loss (ΔZ-vol%.mm) (1977±150 and 2062±243, respectively) when compared to PBS (4540±335), followed by NaF (2403±235) and TiF4/NaF (2340±200). Commercial saliva was the only to significantly reduce mineral loss (LD-µm) (111±25) compared to PBS (153±24).Mean mineral loss (R-vol%) decreased by 35.2% for TiF4 (18.2±3.3) when compared to PBS (28.1±2.9) Conclusion: TiF4/NaF has a comparable anti-cariogenic effect to TiF4 and Commercial saliva under the model in this study.

A high-cholesterol diet promotes the intravasation of breast tumor cells through an LDL-LDLR axis.

Most metastases in breast cancer occur via the dissemination of tumor cells through the bloodstream. How tumor cells enter the blood (intravasation) is, however, a poorly understood mechanism at the cellular and molecular levels. Particularly uncharacterized is how intravasation is affected by systemic nutrients. High levels of systemic LDL-cholesterol have been shown to contribute to breast cancer progression and metastasis in various models, but the cellular and molecular mechanisms involved are still undisclosed. Here we show that a high- cholesterol diet promotes intravasation in two mouse models of breast cancer and that this could be reverted by blocking LDL binding to LDLR in tumor cells. Moreover, we show that LDL promotes vascular invasion in vitro and the intercalation of tumor cells with endothelial cells, a phenotypic change resembling vascular mimicry (VM). At the molecular level, LDL increases the expression of SERPINE2, previously shown to be required for both VM and intravasation. Overall, our manuscript unravels novel mechanisms by which systemic hypercholesterolemia may affect the onset of metastatic breast cancer by favouring phenotypic changes in breast cancer cells and increasing intravasation.

A biological guide to glycosaminoglycans: current perspectives and pending questions.

Mammalian glycosaminoglycans (GAGs), except hyaluronan (HA), are sulfated polysaccharides that are covalently attached to core proteins to form proteoglycans (PGs). This article summarizes key biological findings for the most widespread GAGs, namely HA, chondroitin sulfate/dermatan sulfate (CS/DS), keratan sulfate (KS), and heparan sulfate (HS). It focuses on the major processes that remain to be deciphered to get a comprehensive view of the mechanisms mediating GAG biological functions. They include the regulation of GAG biosynthesis and postsynthetic modifications in heparin (HP) and HS, the composition, heterogeneity, and function of the tetrasaccharide linkage region and its role in disease, the functional characterization of the new PGs recently identified by glycoproteomics, the selectivity of interactions mediated by GAG chains, the display of GAG chains and PGs at the cell surface and their impact on the availability and activity of soluble ligands, and on their move through the glycocalyx layer to reach their receptors, the human GAG profile in health and disease, the roles of GAGs and particular PGs (syndecans, decorin, and biglycan) involved in cancer, inflammation, and fibrosis, the possible use of GAGs and PGs as disease biomarkers, and the design of inhibitors targeting GAG biosynthetic enzymes and GAG-protein interactions to develop novel therapeutic approaches.

Is the spread of excitation different between adults and children cochlear implants users?

PURPOSE: While cochlea is adult size at birth, etiologies and bone density may differ between children and adults. Differences in neural response thresholds (tNRT) and the spread of excitation (SOE) width may impact the use of artificial intelligence algorithms in speech processor fitting. AIM: To identify whether neural response telemetry threshold and spread of excitation width are similar in adults and children. METHODS: Retrospective cross-sectional study approved by the Ethical Board. Intraoperative tNRT and SOE recordings of consecutive cochlear implant surgeries in adults and children implanted with Cochlear devices (Cochlear™, Australia) were selected. SOE was recorded on electrode 11 (or adjacent, corresponding to the medial region of the cochlea) through the standard forward-masking technique in Custom Sound EP software, which provides SOE width in millimeters. Statistical comparison between adults and children was performed using the Mann-Whitney test (p ≤ 0.05). RESULTS: Of 1282 recordings of intraoperative evaluations, 414 measurements were selected from children and adults. Despite the tNRT being similar between adults and children, SOE width was significantly different, with lower values in children with perimodiolar arrays. Besides, it was observed that there is a difference in the electrode where the SOE function peak occurred, more frequently shifted to electrode 12 in adults implanted. In straight arrays, there was no difference in any of the parameters analyzed on electrode 11. CONCLUSION: Although eCAP thresholds are similar, SOE measurements differ between adults and children in perimodiolar electrodes.

Salivary proteomic profile of response to different resistance training protocols: A case report.

Resistance training (RT) with blood flow restriction (BFR) or high intensity (HI) are effective to increase muscle mass. To understand this effect, techniques known as "omics" are used to identify possible biomarkers. This study analyzed the salivary proteomic profile of healthy individuals trained before and after two RT protocols both designed with eight exercises for upper- and lower-limbs, one performed at low percentage of one-maximum repetition (%1RM) with BFR technique, and other at high %1RM (HI) without BRF technique. Four healthy males between 18 and 28 years participated in the study. Stimulated saliva was collected before (BBFR/BHI) and immediately after (ABFR/AHI) the two RT protocols. All protein-related processing was performed using label-free proteomic. The difference in expression between groups was expressed as p < .05 for downregulated proteins and 1-p > .95 for upregulated proteins. There was difference in salivary flow between ABFR and BBFR (p = .005). For HI, 87 proteins were found after the practice and 119 before. Three hemoglobin isoforms were increased in AHI compared with BHI. In the BFR comparison, 105 proteins were identified after (ABFR) and 70 before (BBFR). Among those increased ABFR, we highlight five hemoglobin isoforms and Deleted in malignant brain tumors 1 protein. Between ABFR and AHI, 17 isoforms of histones, Transaldolase, Transketolase, Glyceraldehyde-3-phosphate dehydrogenase, and Antileukoproteinase were decreased ABFR. For HI, there was an increase in proteins related to oxidative stress and metabolism of the musculoskeletal system, compared with BFR. HI seems to induce higher anabolic signaling to muscle mass increase and antiatherosclerotic effects.

Alterações oculares decorrentes de picada de abelha na córnea / Ocular changes due to corneal bee sting

RESUMO O propósito deste estudo foi reportar as alterações oculares observadas após picada de abelha com ferrão retido na córnea. Destacamos o tratamento e o desfecho de uma lesão de córnea incomum e sua patogênese. Trata-se de relato de caso e revisão da literatura de lesões oculares por picada de abelha. Paciente do sexo feminino, 63 anos, procurou atendimento oftalmológico de urgência devido à picada de abelha na córnea do olho direito há 6 dias. Queixava-se de embaçamento visual, dor e hiperemia ocular. Apresentou acuidade visual de vultos no olho afetado. Ao exame, notaram-se hiperemia moderada de conjuntiva bulbar, edema corneano com dobras de Descemet e presença do ferrão alojado na região temporal, no estroma profundo da córnea. A paciente foi internada para ser abordada no centro cirúrgico sob anestesia geral. Durante a cirurgia, o ferrão teve que ser retirado via câmara anterior, mediante a realização de uma paracentese e uma lavagem da câmara anterior, com dupla via e solução salina balanceada. Ainda não existe na literatura um tratamento padrão na abordagem de pacientes com lesões oculares por picada de abelha, sendo importantes a identificação e o reconhecimento precoce de possíveis complicações que ameacem a visão.

ABSTRACT The purpose of this study was to report the ocular changes observed after a bee sting with a stinger retained in the cornea. We show the treatment and outcome of an unusual corneal injury and its pathogenesis. This is a case report and literature review of ocular injuries caused by bee stings. A 63-year-old female patient sought emergency ophthalmic care because of a bee sting on the cornea of her right eye six days before. She complained of blurred vision, pain, and ocular hyperemia. She had glare sensitivity on visual acuity in the affected eye. Examination revealed moderate hyperemia of the bulbar conjunctiva, corneal edema with Descemet's folds and a stinger lodged in the temporal region, in the deep stroma of the cornea. The patient was admitted to the operating room under general anesthesia. During surgery, the stinger had to be removed via the anterior chamber, by performing a paracentesis and washing the anterior chamber with a double flushing and balanced saline solution. There is still no standard treatment in the literature for patients with eye injuries caused by bee stings, and early identification and recognition of possible sight-threatening complications is important.

Prevenção de quedas na hospitalização: oportunidades educativas na perspectiva dos trabalhadores de Enfermagem* / Preventing falls during hospitalization: educational opportunities from the perspective of Nursing staff / Prevención de caídas durante la hospitalización: oportunidades educativas desde la perspectiva de los trabajadores de Enfermería

Objetivo: descrever as oportunidades educativas identificadas pelos trabalhadores de Enfermagem para prevenir as quedas de pacientes adultos hospitalizados. Método: estudo qualitativo, descritivo, com 21 trabalhadores de Enfermagem de um hospital universitário no sul do Brasil. A coleta de dados ocorreu de março a maio de 2020, com entrevistas semiestruturadas, submetidas à Análise de Conteúdo. Resultados: foram descritas pelos trabalhadores a necessidade de as ações educativas atingirem os envolvidos na prevenção das quedas, emergindo as categorias: Protagonismo do paciente na prevenção das quedas: a educação como estratégia para a percepção do risco; O desafio do envolvimento do familiar/acompanhante como potencializador do cuidado; Dialogicidade na prevenção das quedas: uma reflexão sobre o fazer diário. Conclusão: os trabalhadores identificaram as oportunidades de investimento na educação e na formação, considerando as experiências prévias e o contexto social, criando percursos de aprendizagem, testando novas abordagens para a prevenção de quedas e aprimorando seu papel educativo.

Objective: to describe the educational opportunities identified by Nursing staff to prevent falls in hospitalized adult patients. Method: This is a qualitative, descriptive study with 21 Nursing workers from a university hospital in southern Brazil. Data collection took place from March to May 2020, with semi-structured interviews, submitted to Content Analysis. Results: workers described the need for educational actions to reach those involved in fall prevention, and the following categories emerged: Patient protagonism in fall prevention: education as a strategy for risk perception; The challenge of involving the family member/companion as an enhancer of care; Dialogicity in fall prevention: a reflection on daily practice. Conclusion: workers identified opportunities to invest in education and training, taking into account previous experiences and the social context, creating learning paths, testing new approaches to fall prevention, and improving their educational role.

Objetivo: describir las oportunidades educativas identificadas por los trabajadores de Enfermería para prevenir caídas en pacientes adultos hospitalizados. Método: estudio cualitativo, descriptivo, con 21 trabajadores de Enfermería de un hospital universitario del sur de Brasil. La recolección de datos se realizó de marzo a mayo de 2020, con entrevistas semiestructuradas, sometidas a Análisis de Contenido. Resultados: los trabajadores describieron la necesidad de acciones educativas para llegar a los involucrados en la prevención de caídas, surgiendo las siguientes categorías: Papel del paciente en la prevención de caídas: la educación como estrategia para la percepción del riesgo; El desafío de la participación de la familia/acompañante como potenciador del cuidado; Diálogo en la prevención de caídas: una reflexión sobre la práctica diaria. Conclusión: los trabajadores identificaron oportunidades de inversión en educación y capacitación, considerando experiencias anteriores y el contexto social, creando caminos de aprendizaje, probando nuevos enfoques para prevenir caídas y mejorar su rol educativo.

Nursing performance in COVID-19 and non-COVID-19 units: Implications for occupational health / Atuação da enfermagem em unidades dedicadas e não dedicadas à COVID-19: implicações na saúde ocupacional / Trabajo de enfermería en unidades dedicadas y no dedicadas al COVID-19: consecuencias para la salud ocupacional

Abstract Objective: to analyze the implications of the pandemic on the Nursing team's occupational health according to its performance in COVID-19 and non-COVID-19 units. Method: a multicenter and mixed-methods study, with a sequential explanatory strategy. A total of 845 professionals took part in the first stage, answering an electronic form which contained sociodemographic and work-related variables, as well as about the pandemic and their health, in addition to the Self-Reporting Questionnaire. 19 professionals were interviewed in the second stage. The quantitative data were submitted to statistical analysis and the qualitative ones to thematic content analysis, with integration by connection. Results: the pandemic exerted impacts on the professionals' health, both in the COVID-19 and non-COVID-19 areas. However, composition of the teams presented different characteristics between the areas, as well as the risk perceptions and the work demands. Conclusion: the professionals working in areas COVID-19 and non-COVID-19 areas are equally affected, although with different work exposure regarding the requirements at work in the COVID-19 units and the fear of contamination in non-COVID-19 units.

Resumo Objetivo: analisar as implicações da pandemia sobre a saúde ocupacional da equipe de enfermagem conforme a atuação em unidades dedicadas e não dedicadas à COVID-19. Método: estudo multicêntrico, de método misto, estratégia explanatória sequencial. Participaram 845 profissionais na primeira etapa, respondendo a um formulário eletrônico contendo variáveis sociodemográficas, laborais, sobre a pandemia e sua saúde e o Self-Reporting Questionnaire. Na segunda etapa, 19 profissionais foram entrevistados. Os dados quantitativos foram submetidos à estatística analítica e os qualitativos à análise temática de conteúdo, sendo integrados por conexão. Resultados: os impactos da pandemia sobre a saúde dos profissionais ocorreram tanto nas áreas dedicadas como nas não dedicadas à COVID-19. Contudo, a composição das equipes apresentou características distintas entre as áreas, bem como as percepções de risco e das exigências no trabalho. Conclusão: os profissionais que atuam em áreas dedicadas e não dedicadas à COVID-19 estão igualmente adoecidos, mas com exposição laboral distinta quanto às exigências no trabalho nas unidades dedicadas e o medo da contaminação nas unidades não dedicadas.

Resumen Objetivo: analizar las consecuencias que tuvo la pandemia en la salud ocupacional de los enfermeros según si se desempeñaban en unidades dedicadas y no dedicadas al COVID-19. Método: estudio multicéntrico, método mixto, estrategia explicativa secuencial. En la primera etapa participaron en total 845 profesionales que respondieron un formulario electrónico que contenía variables sociodemográficas, ocupacionales, sobre la pandemia y la salud y el Self-Reporting Questionnaire. En la segunda etapa, fueron entrevistados 19 profesionales. Los datos cuantitativos fueron sometidos a estadística analítica y los datos cualitativos al análisis de contenido temático, posteriormente, ambos fueron integrados por conexión. Resultados: los impactos de la pandemia en la salud de los profesionales se produjeron tanto en las áreas dedicadas como en las no dedicadas al COVID-19. Sin embargo, la composición de los equipos presentó distintas características entre las áreas, así como también diferentes percepciones de riesgo y exigencias en el trabajo. Conclusión: los profesionales que trabajan en áreas dedicadas y no dedicadas al COVID-19 se enfermaron por igual, pero tuvieron diferente exposición ocupacional debido a las exigencias que presentaba el trabajo en las unidades dedicadas y al miedo al contagio en las unidades no dedicadas.

Proteomic analysis of stimulated saliva in gastroesophageal reflux disease patients with and without erosive tooth wear: Observational study.

OBJECTIVE: To evaluate the difference in the proteomic profile of stimulated saliva in patients with gastroesophageal reflux disease (GERD) with (GE) and without (GNE) erosive tooth wear (ETW), regarding both human and bacterial proteins. METHODS: Stimulated saliva (SS) was collected from 16 patients (8/group). Samples were centrifuged at 4.500 g for 15 min under refrigeration to remove all debris. The supernatant from each saliva sample was taken and frozen at -80 °C. After extracting the proteins, they were submitted to reverse phase liquid chromatography and mass spectrometry (nLC-ESI-MS/MS). Label-free proteomic quantification was performed using Protein Lynx Global Service (PLGS) software (p < 0.05) for human and bacterial proteins. RESULTS: In total, 67 human proteins were common for GNE and GE groups. GNE group presented, compared to GE group, increase in proteins that confer antimicrobial and acid resistant properties, such as cystatins, histatin and immunoglobulins. However, GNE group had a marked decrease in subunits of hemoglobin (α, ß and delta). Regarding bacterial proteins, for SS, 7 and 10 unique proteins were identified in the GE and GNE groups, respectively. They are related to protein synthesis and energy metabolism and interact with human proteins typically found in saliva and supramolecular complexes of the acquired pellicle. CONCLUSIONS: Our data indicate that the stimulation of the salivary flow increases acid resistant and antimicrobial proteins in saliva, which might protect against ETW. CLINICAL SIGNIFICANCE: This pioneer study showed important differences in the human and bacterial proteome of SS in patients with GERD with or without ETW.

Systematic discovery of neoepitope-HLA pairs for neoantigens shared among patients and tumor types.

The broad application of precision cancer immunotherapies is limited by the number of validated neoepitopes that are common among patients or tumor types. To expand the known repertoire of shared neoantigen-human leukocyte antigen (HLA) complexes, we developed a high-throughput platform that coupled an in vitro peptide-HLA binding assay with engineered cellular models expressing individual HLA alleles in combination with a concatenated transgene harboring 47 common cancer neoantigens. From more than 24,000 possible neoepitope-HLA combinations, biochemical and computational assessment yielded 844 unique candidates, of which 86 were verified after immunoprecipitation mass spectrometry analyses of engineered, monoallelic cell lines. To evaluate the potential for immunogenicity, we identified T cell receptors that recognized select neoepitope-HLA pairs and elicited a response after introduction into human T cells. These cellular systems and our data on therapeutically relevant neoepitopes in their HLA contexts will aid researchers studying antigen processing as well as neoepitope targeting therapies.

Evaluation of the Cytotoxic and Antiviral Effects of Small Molecules Selected by In Silico Studies as Inhibitors of SARS-CoV-2 Cell Entry.

The spike protein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) relies on host cell surface glycans to facilitate interaction with the angiotensin-converting enzyme 2 (ACE-2) receptor. This interaction between ACE2 and the spike protein is a gateway for the virus to enter host cells and may be targeted by antiviral drugs to inhibit viral infection. Therefore, targeting the interaction between these two proteins is an interesting strategy to prevent SARS-CoV-2 infection. A library of glycan mimetics and derivatives was selected for a virtual screening performed against both ACE2 and spike proteins. Subsequently, in vitro assays were performed on eleven of the most promising in silico compounds to evaluate: (i) their efficacy in inhibiting cell infection by SARS-CoV-2 (using the Vero CCL-81 cell line as a model), (ii) their impact on ACE2 expression (in the Vero CCL-81 and MDA-MB-231 cell lines), and (iii) their cytotoxicity in a human lung cell line (A549). We identified five synthetic compounds with the potential to block SARS-CoV-2 infection, three of them without relevant toxicity in human lung cells. Xanthene 1 stood out as the most promising anti-SARS-CoV-2 agent, inhibiting viral infection and viral replication in Vero CCL-81 cells, without causing cytotoxicity to human lung cells.

Fatores Associados aos Triggers e Eventos Adversos em Pediatria / Factors Associated with Triggers and Adverse Events in Pediatrics

Introdução: A ocorrência frequente de eventos adversos durante a internação hospitalar demanda meios proativos de gerenciamento de riscos, incluindo a verificação de rastreadores/triggers. Objetivo: verificar os fatores associados aos triggers e eventos adversos na internação pediátrica. Material e Métodos: Pesquisa transversal embasada na metodologia do Institute for Healthcare Improvement (IHI), por meio da aplicação do Paediatric Trigger Tool (PTT) a uma amostra (n=194) de prontuários de pacientes pediátricos de um hospital do Centro-Oeste do Brasil. Foi realizada análise estatística descritiva, inferencial e regressão de Poisson. Resultados: Mais da metade (n=107; 55,15%) dos pacientes apresentou pelo menos um trigger na internação. Foram identificados 204 triggers/gatilhos, com maior ocorrência de queda de hemoglobina/hematócrito (9,80%), queda de saturação de oxigênio (9,80%) e aumento de marcadores de funções renais (9,20%). Do total de gatilhos, 64 (31,37%) eventos adversos foram confirmados, os quais foram classificados majoritariamente como dano temporário com necessidade de suporte ao paciente (65,62%). O tempo de internação (p-valor=0,004) e o caráter da internação (p-valor<0,001) foram variáveis associadas à ocorrência de triggers. Caráter de internação e admissões provenientes de outras instituições foram preditores na ocorrência de triggers e eventos adversos. Discussão: O estudo encontrou 31,37% dos triggers resultando em danos ao paciente, a detecção precoce é essencial na segurança do paciente pediátrico, internações prolongadas estão ligadas a infecções e eventos adversos, transferências de pacientes exigem medidas de segurança rigorosas e eficazes. Conclusões: internações prolongadas e crianças admitidas via transferência merecem atenção a triggers e/ou eventos adversos concretizados.

Introduction: The frequent occurrence of adverse events during hospital admission demands proactive means of risk management, including checking trackers/triggers. Objective: to verify the factors associated with triggers and adverse events in pediatric hospitalization. Material and Methods: Cross-sectional research based on the Institute for Healthcare Improvement (IHI) methodology, through the application of the Pediatric Trigger Tool (PTT) to a sample (n= 194) from medical records of pediatric patients from a hospital in the Center-West of Brazil. Descriptive, inferential statistical analysis and Poisson regression were performed. Results: More than half (n=107; 55.15%) of patients had at least one trigger upon admission. 204 triggers were identified, with the highest occurrence of a drop in hemoglobin/hematocrit (9.80%), a drop in oxygen saturation (9.80%) and an increase in kidney function markers (9.20%). Of the total triggers, 64 (31.37%) adverse events were confirmed, which were mostly classified as temporary damage requiring patient support (65.62%). The length of stay (p-value=0.004) and the nature of the hospitalization (p-value<0.001) were variables associated with the occurrence of triggers. Character of hospitalization and admissions from other institutions were predictors of the occurrence of triggers and adverse events. Discussion: The study found 31.37% of triggers resulting in harm to the patient, early detection is essential in pediatric patient safety, prolonged hospitalizations are linked to infections and adverse events, patient transfers require rigorous and effective safety measures. Conclusions: Prolonged hospitalizations and children admitted via transfer deserve attention to triggers and/or adverse events.

Introducción: La frecuente aparición de eventos adversos durante el ingreso hospitalario exige medios proactivos de gestión de riesgos, incluida la verificación de rastreadores/disparadores. Objetivo: verificar los factores asociados a desencadenantes y eventos adversos en la hospitalización pediátrica, Material y Métodos: Investigación transversal basada en la metodología Institute for Healthcare Improvement (IHI), mediante la aplicación del Pediatric Trigger Tool (PTT) a una muestra (n= 194) de historias clínicas de pacientes pediátricos de un hospital del Centro-Oeste de Brasil. Se realizaron análisis estadísticos descriptivos, inferenciales y regresión de Poisson. Resultados: Más de la mitad (n=107; 55,15%) de los pacientes presentaron al menos un desencadenante al ingreso. Se identificaron 204 desencadenantes, con mayor incidencia de descenso de la hemoglobina/hematocrito (9,80%), descenso de la saturación de oxígeno (9,80%) y aumento de los marcadores de función renal (9,20%). Del total de desencadenantes, se confirmaron 64 (31,37%) eventos adversos, los cuales en su mayoría fueron clasificados como daños temporales que requirieron apoyo del paciente (65,62%). La duración de la estancia (p-valor=0,004) y la naturaleza de la hospitalización (p-valor<0,001) fueron variables asociadas con la aparición de desencadenantes. El carácter de la hospitalización y los ingresos de otras instituciones fueron predictores de la aparición de desencadenantes y eventos adversos. Discusión: El estudio encontró que el 31,37% de los desencadenantes resultan en daño al paciente, la detección temprana es esencial en la seguridad del paciente pediátrico, las hospitalizaciones prolongadas están vinculadas a infecciones y eventos adversos, los traslados de pacientes requieren medidas de seguridad rigurosas y efectivas. Conclusiones: Las hospitalizaciones prolongadas y los niños ingresados ​​vía traslado merecen atención a los desencadenantes y/o eventos adversos.

Estratégias de enfrentamento da COVID-19 na atenção primária: estudo de método misto / Coping strategies for COVID-19 primary care: a mixed method study

Resumo O objetivo deste artigo é analisar as estratégias de enfrentamento da COVID-19 adotadas por gestores municipais de saúde em duas regiões. Estudo de método misto do tipo explanatório sequencial, realizado com gestores municipais de saúde e coordenadores da atenção primária. A etapa quantitativa foi desenvolvida com a aplicação de instrumento a 42 gestores, para identificação de ações de enfrentamento e associação com dados demográficos e epidemiológicos da COVID-19 nos municípios. Os resultados direcionaram à definição de 15 participantes e à coleta de dados na etapa qualitativa, possibilitando aproximação das metainferências do estudo. Das ações implantadas, foram unânimes as ações de monitoramento dos casos, organização de novos fluxos de atendimento e estímulo à adoção de medidas não farmacológicas pela população. A articulação regional foi o dispositivo que permitiu ampliação e autonomia municipal para a testagem, com redução de contaminação e óbitos nos munícipes. As estratégias municipais de enfrentamento que tiveram foco na vigilância dos casos e na ampliação da testagem apresentaram desfechos positivos no que se refere a número de óbitos por COVID-19.

Abstract This article aims to analyse the COVID-19 coping strategies adopted by municipal health managers in two regions. A mixed method study of the sequential explanatory type was carried out with municipal health managers and primary care coordinators. The quantitative stage was developed with the application of an instrument to 42 managers to identify coping actions and associations with demographic and epidemiological data of COVID-19 in the municipalities. The results aimed at the definition of 15 participants and the collection of data in the qualitative stage, enabling approximation of the meta inferences of the study. Of the actions implemented, there were immediate actions to monitor cases, organize new care flows and encourage the population to adopt nonpharmacological measures. Regional articulation was the device that allowed for expansion and municipal autonomy for testing, reducing contamination and deaths among citizens. Municipal coping strategies that focused on the surveillance of cases and expansion of testing showed positive outcomes in terms of the number of infections and deaths from COVID-19.

Antibacterial, antibiofilm and anticaries effect of BioXtra® mouthrinse for head and neck cancer (HNC) patients under a microcosm biofilm model.

BACKGROUND AND PURPOSE: Considering the lack of studies investigating salivary substitutes to control post-radiation caries for patients with head and neck cancer (HNC), this study aimed to evaluate the antibacterial, antibiofilm, and anticaries effects of BioXtra® on the microcosm biofilm formed on different enamel types (non-irradiated and irradiated) and from distinct saliva sources (control and HNC patients). MATERIALS AND METHODS: Non-irradiated and irradiated enamel specimens were treated with BioXtra®, phosphate-buffered-saline (PBS; negative control), or 0.12% chlorhexidine (CHX; positive control) for 1 min. Biofilm was produced from human saliva (healthy participants with normal salivary flow for the control group or irradiated HNC patients with hyposalivation for the HNC group), mixed with McBain saliva, under 0.2% sucrose exposure, daily submitted to the treatments (1 min), for 5 days. Bacterial metabolic activity, biofilm viability, CFU counting, and enamel demineralization were determined. RESULTS: BioXtra® significantly reduced the bacterial metabolic activity for both enamel types and the inoculum sources, being more effective for the irradiated enamel or for the saliva from the control group. Similarly, BioXtra® significantly reduced the biofilm viability, the CFU for total microorganisms, mutans streptococci, and lactobacilli, and was able to significantly reduce the mineral loss and the lesion depth compared to PBS. CHX was an effective treatment to significantly reduce all parameters, performing better than BioXtra® and reinforcing its reliable efficiency as a positive control. CONCLUSION: Regardless of the enamel type and the inoculum source, BioXtra® presented antibacterial, antibiofilm, and anticaries effects under this experimental model, which should be confirmed in further clinical studies.

Syndecan-4 is a maestro of gastric cancer cell invasion and communication that underscores poor survival.

Gastric cancer is a dominating cause of cancer-associated mortality with limited therapeutic options. Here, we show that syndecan-4 (SDC4), a transmembrane proteoglycan, is highly expressed in intestinal subtype gastric tumors and that this signature associates with patient poor survival. Further, we mechanistically demonstrate that SDC4 is a master regulator of gastric cancer cell motility and invasion. We also find that SDC4 decorated with heparan sulfate is efficiently sorted in extracellular vesicles (EVs). Interestingly, SDC4 in EVs regulates gastric cancer cell-derived EV organ distribution, uptake, and functional effects in recipient cells. Specifically, we show that SDC4 knockout disrupts the tropism of EVs for the common gastric cancer metastatic sites. Our findings set the basis for the molecular implications of SDC4 expression in gastric cancer cells and provide broader perspectives on the development of therapeutic strategies targeting the glycan-EV axis to limit tumor progression.

Purification and Biological Properties of Raniseptins-3 and -6, Two Antimicrobial Peptides from Boana raniceps (Cope, 1862) Skin Secretion.

The number of multidrug-resistant pathogenic microorganisms has been growing in recent years, most of which is due to the inappropriate use of the commercial antibiotics that are currently available. The dissemination of antimicrobial resistance represents a serious global public health problem. Thus, it is necessary to search for and develop new drugs that can act as antimicrobial agents. Antimicrobial peptides are a promising alternative for the development of new therapeutic drugs. Anurans' skin glands are a rich source of broad-spectrum antimicrobial compounds and hylids, a large and diverse family of tree frogs, are known as an important source of antimicrobial peptides. In the present study, two novel antimicrobial peptides, named Raniseptins-3 and -6, were isolated from Boana raniceps skin secretion and their structural and biological properties were evaluated. Raniseptins-3 and -6 are cationic, rich in hydrophobic residues, and adopt an α-helix conformation in the presence of SDS (35 mM). Both peptides are active against Gram-negative bacteria and Gram-positive pathogens, with low hemolytic activity at therapeutic concentrations. No activity was observed for yeasts, but the peptides are highly cytotoxic against B16F10 murine melanoma cells and NIH3T3 mouse fibroblast cells. None of the tested compounds showed improvement trends in the MTT and LDH parameters of MHV-3 infected cells at the concentrations tested.

Práticas aplicadas nas escolas em situações de automutilação em adolescentes: protocolo de revisão de escopo / Practices applied in schools in situations of self-mutilation among adolescents: scope review protocol

OBJETIVO: Identificar as práticas aplicadas nas escolas em situações de autolesão não suicida em adolescentes. MÉTODO: A estratégia de busca será aplicada no Medical Literature Analysis and Retrieval System Online (MEDLINE/PubMed), Excerpta Medica Database (EMBASE/Elsevier); Cumulated Index in Nursing and Allied Health Literature (CINAHL/Ebsco); Scopus/Elsevier, Cochrane Library; Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS) via Biblioteca Virtual em Saúde (BVS), Base de Dados de Enfermagem (BDENF); PsycINFO; Education Resources Information Center (ERIC); Web of Science Core Collection, Scientific Electronic Library Online (SCIELO), e na literatura cinzenta. Serão considerados artigos de pesquisas primárias, quantitativos e/ou qualitativos, sem limitações quanto à data da publicação e idioma. Os resultados serão inseridos no EndNote v.X9 e duplicatas serão removidas. O Rayyan QCRI20 será utilizado na seleção dos estudos. Esta será feita por dois revisores independentes de forma cega. Discordâncias serão resolvidas por consenso ou terceiro revisor. Será utilizado o diagrama de fluxo Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). Os dados serão extraídos usando a ferramenta de extração na abordagem scoping review do Joanna Briggs Institute (JBI).

OBJECTIVE: Identify practices applied in schools in situations of non-suicidal self-injury in adolescents. METHOD: The search strategy will be applied in Medical Literature Analysis and Retrieval System Online (MEDLINE/PubMed), Excerpta Medica Database (EMBASE/Elsevier); Cumulated Index in Nursing and Allied Health Literature (CINAHL/Ebsco); Scopus/Elsevier, Cochrane Library; Latin America and the Caribbean Health Sciences Literature (LILACS) by Virtual Health Library (VHL), Nursing Database (BDENF); PsycINFO; Education Resources Information Center (ERIC); Web of Science Core Collection, Scientific Electronic Library Online (SCIELO), and gray literature. Primary, quantitative and/or qualitative research articles will be considered without restriction regarding publication date and language. Results will be entered into EndNote X9, and duplicates will be removed. The Rayyan QCRI20 will be used in the selection of studies. This will be done by two independent reviewers blindly. Disagreements will be resolved by consensus or a third reviewer. The Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) flowchart will be used. Data will be extracted using the extraction tool in the JBI scoping review approach.

Organização do trabalho e burnout entre profissionais de enfermagem na pandemia: estudo de método misto / Work organization and burnout among nursing professionals during the pandemic: a mixed-methods study

OBJETIVO: avaliar as repercussões da pandemia de COVID-19 na organização do trabalho e no Burnout dos profissionais de enfermagem em um hospital da região sul do Brasil. MÉTODO: desenho misto explanatório sequencial, em cinco unidades de internação adulta, realizado de agosto a novembro de 2020. Na etapa quantitativa, numa amostra de 78 participantes, foi aplicado o Inventário de Burnout de Maslach e os dados foram analisados por meio de estatística descritiva e analítica. Na etapa qualitativa, foram realizadas entrevistas semiestruturadas online, por amostragem intencional, com nove profissionais, e os dados foram submetidos à análise de conteúdo categorial temática. RESULTADOS: 99% dos profissionais atenderam pacientes suspeitos ou confirmados com a doença; 64% afastaram-se por suspeita e 35% por confirmação de COVID-19; 11,5% apresentaram a Síndrome de Burnout. O medo, o compromisso com o trabalho, as falhas nos protocolos e na comunicação institucional foram temas das categorias. CONCLUSÃO: apesar de a Síndrome de Burnout ter apresentado baixa frequência entre os trabalhadores de enfermagem, constatou-se que a pandemia de COVID-19 repercutiu sobremaneira na organização do trabalho desses profissionais.

OBJECTIVE: this study aims to assess the repercussions of the COVID-19 pandemic on work organization and burnout among nursing professionals in a hospital in the southern region of Brazil. METHOD: a sequential explanatory mixed-methods design was employed across five adult inpatient units from August to November 2020. In the quantitative phase, a sample of 78 participants completed the Maslach Burnout Inventory, and the data were subjected to descriptive and analytical statistical analysis. In the qualitative phase, online semi-structured interviews were conducted with nine purposively selected professionals, and the data underwent thematic categorical content analysis. RESULTS: 99% of the professionals attended to suspected or confirmed COVID-19 patients; 64% took leave due to suspicion, and 35% due to confirmed COVID-19 cases; 11.5% exhibited symptoms of Burnout Syndrome. The themes emerging from the analysis included fear, commitment to work, protocol failures, and institutional communication breakdowns. CONCLUSION: despite the relatively low frequency of Burnout Syndrome among nursing personnel, it was observed that the COVID-19 pandemic significantly impacted the work organization of these professionals.