Armed violence in Manguinhos/RJ, Brazil: health and daily life of health and education workers. / Violência armada em Manguinhos/RJ, Brasil: saúde e cotidiano de trabalhadoras(es) de saúde e educação.

The article presents the results of qualitative action research on armed violence with health and education professionals and territorial community services in Manguinhos, Rio de Janeiro, Brazil. It is justified by the urgent nature of this violence in the territory and aims to identify its impacts on their health and work, coping, protection, and care strategies. The effects of armed violence on health and education professionals and the territory are discussed through interviews and focus groups with participant observation, identifying some of its transversalities, such as the Brazilian State racist public security policy based on a warlike logic of confrontation with groups with armed control of the territory, which makes life precarious by exposing residents and workers to constant risks, weakening the community fabric and preventing full access to health and education.

O artigo apresenta resultados de uma pesquisa qualitativa sobre violência armada, do tipo pesquisa-ação, com profissionais de saúde e de educação e serviços comunitários territoriais em Manguinhos/RJ. Justifica-se pela premência dessa violência no território, tendo como objetivo identificar seus impactos na saúde e no trabalho, assim como as estratégias de enfrentamento, proteção e cuidado empreendidas. A partir de entrevistas e grupos focais com profissionais de saúde e da educação e observação participante, discutem-se os efeitos da violência armada sobre elas(es) e o território, identificando algumas de suas transversalidades, como a política de segurança pública racista empreendida pelo Estado brasileiro, baseada numa lógica bélica de confronto com grupos que têm domínio armado de território, que precariza a vida ao expor moradoras(es) e trabalhadoras(es) a riscos constantes, enfraquece o tecido comunitário e impede o pleno acesso à saúde e à educação.

Neurosensory Evaluation Following Genioplasty: A Case Report.

Genioplasty is a common procedure in plastic surgery, with various alloplastic biomaterials utilized for chin augmentation. Despite their advantages, complications such as neuropraxia of the mental nerve can occur, leading to temporary or persistent sensory disturbances. This case report describes a 35-year-old female who sought correction of a small chin. Preoperative evaluation revealed a retrognathic profile, and the patient underwent genioplasty with high-density porous polyethylene implantation. Postoperatively, she experienced mild paresthesia, which improved over time. Neurosensory assessments, including mechanical and light touch tests, showed no abnormalities in A-beta and C fibers but decreased sensitivity in A-delta fibers. This case report emphasizes the importance of evaluating larger nerve fibers during postoperative assessments and the need for standardized testing methodologies to comprehensively assess nerve damage after genioplasty. Further research should explore strategies to standardize neurosensory assessment and optimize therapeutic interventions for nerve damage after genioplasty.

VesselBoost: A Python Toolbox for Small Blood Vessel Segmentation in Human Magnetic Resonance Angiography Data.

Magnetic resonance angiography (MRA) performed at ultra-high magnetic field provides a unique opportunity to study the arteries of the living human brain at the mesoscopic level. From this, we can gain new insights into the brain's blood supply and vascular disease affecting small vessels. However, for quantitative characterization and precise representation of human angioarchitecture to, for example, inform blood-flow simulations, detailed segmentations of the smallest vessels are required. Given the success of deep learning-based methods in many segmentation tasks, we here explore their application to high-resolution MRA data, and address the difficulty of obtaining large data sets of correctly and comprehensively labelled data. We introduce VesselBoost, a vessel segmentation package, which utilizes deep learning and imperfect training labels for accurate vasculature segmentation. Combined with an innovative data augmentation technique, which leverages the resemblance of vascular structures, VesselBoost enables detailed vascular segmentations.

Microbial colonization in the partially exposed nonabsorbable membrane during alveolar ridge preservation.

AIM: This study evaluated the impact of the partial exposition of the nonabsorbable membrane (dPTFE) on microbial colonization during bone healing. MATERIALS AND METHODS: Patients indicated for tooth extraction were randomized to dPTFE group (n = 22) - tooth extraction and alveolar ridge preservation (ARP) using an intentionally exposed dPTFE membrane and USH group (n = 22) - tooth extraction and unassisted socket healing. Biofilm samples were collected at the barrier in the dPTFE and on the natural healing site in the USH after 3 and 28 days. Samples from the inner surface of the dPTFE barrier were also collected (n = 13). The microbiome was evaluated using the Illumina MiSeq system. RESULTS: Beta diversity was different from 3 to 28 days in both groups, and at 28 days, different microbial communities were identified between therapies. The dPTFE was characterized by a higher prevalence and abundance of gram-negative and anaerobic species than USH. Furthermore, the inner surface of the dPTFE membrane was colonized by a different community than the one observed on the outer surface. CONCLUSION: Intentionally exposed dPTFE membrane modulates microbial colonization in the ARP site, creating a more homogeneous and anaerobic community on the inner and outer surfaces of the membrane. CLINICAL RELEVANCE: DPTFE promoted faster biofilm colonization and enrichment of gram-negative and anaerobes close to the regenerated site in the membrane's inner and outer surfaces. dPTFE membrane can be used exposed to the oral site, but approaches for biofilm control should still be considered. The study was retrospectively registered at Clinicaltrials.gov (NCT04329351).

The Use of Diets to Improve the Quality of Life of Women With Breast Cancer.

INTRODUCTION: There has been an increase in the incidence of breast cancer cases in the last decade, and despite the treatment increasing the chances of survival, it reduces the quality of life. In this context, diets could decrease the adverse effects of treatment and improve quality of life. METHODOLOGY: A form with the European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire, which contains specific scores for physical, cognitive, emotional, symptomatic, and functional performance, was made available in a Facebook support group. Afterward, the data were analyzed using linear regression and a t-test of independent samples using Jamovi version 2.3.24 (retrieved from https://www.jamovi.org). RESULTS: There was a low number of participants who followed the ketogenic diet or intermittent fasting. In general, adherence to the diets was good. In the t-test, diets showed improvement in physical performance. Linear regression correlated treatment with chemotherapy, metastases, and bad diet adherence with worse symptomatic scores. CONCLUSION: There is evidence that diets can improve the symptoms of these patients; however, there is no consensus about which diet produces the best effect, requiring further studies on this subject.

Estágio Curricular Supervisionado: relato da experiência discente em uma unidade básica de saúde

Objetivo: relatar experiências vivenciadas por estagiárias de enfermagem, da Universidade Federal do Vale do São Francisco, durante as atividades de estágio em uma Unidade Básica de Saúde do município de Petrolina-PE. Trata-se de um estudo descritivo, do tipo relato de experiência, desenvolvido a partir da atuação das estagiárias em um serviço de atenção básica no período de janeiro a abril de 2022. Descrição da experiência: As atividades desenvolvidas durante esse período mostraram os desafios que envolvem a rotina do profissional de enfermagem, bem como suas atribuições e responsabilidades com a população adscrita. Destaca-se que a experiência permitiu a aproximação com o Sistema Único de Saúde em um contexto de pandemia, sendo possível identificar as dificuldades enfrentadas na rotina e a necessidade de reinventar o processo de trabalho para garantir assistência de qualidade aos usuários. As atividades desenvolvidas e/ou acompanhadas foram: atendimento aos sintomáticos respiratórios; atendimento às pessoas com arboviroses; notificação de doenças e agravo; vacinação; saúde da mulher e planejamento familiar e reprodutivo; pré-natal; desfecho de gestação; saúde da criança e adolescente; ações voltadas ao rastreio e tratamento de casos de hanseníase; curativos e outros procedimentos; consulta compartilhada; visita domiciliar; territorialização e perfil epidemiológico; e gerenciamento de serviços de saúde. Conclusões: O Estágio Curricular Supervisionado configurou-se como ferramenta importante para o crescimento pessoal e profissional, a partir da aproximação com o cenário de trabalho e vivências que exigiam o raciocínio clínico para a tomada de decisão em enfermagem.

Fleas (Siphonaptera, Latreille, 1825) from Rio Grande do Sul State, Brazil: Species Diversity, Hosts, and One Health Approach.

Background: Fleas are ectoparasitic insects with holometabolous development. It has a hematophagous habit with mouthparts adapted to sting and suck its hosts. There are about 3000 species in the world, ∼61 in Brazil, and 19 in Rio Grande do Sul state. The objective of the research is to catalog the diversity of fleas recorded in the state, their respective hosts, and endosymbionts. Materials and Methods: To this end, a search was carried out in the scientific literature, from articles, books, to abstracts submitted to congresses. Results: The 19 species of fleas occurring in Rio Grande do Sul are divided into 7 families and 10 genera. These ectoparasites, in addition to being found in the environment, were associated with 10 different families of hosts in Rio Grande do Sul, and on the endosymbiont, agents found associated with fleas, there were 7 different species. The main agents researched in the state are Rickettsia spp. and Bartonella spp. The relationships between parasites, hosts, environment, and etiological agents present different scenarios, whether anthropized or conserved, but unknown. Sometimes, this overlap, a factor that aggravates the possibility of spillovers, either from cosmopolitan fleas in these conserved areas, or from their endosymbionts. Conclusion: Thus, it is important to characterize the environment so that the complexities of each location are known for the adoption of environmental and public health policies in each case. The challenges are extensive, but necessary in view of the One Health perspective.

Neurodesk: an accessible, flexible and portable data analysis environment for reproducible neuroimaging.

Neuroimaging research requires purpose-built analysis software, which is challenging to install and may produce different results across computing environments. The community-oriented, open-source Neurodesk platform ( https://www.neurodesk.org/ ) harnesses a comprehensive and growing suite of neuroimaging software containers. Neurodesk includes a browser-accessible virtual desktop, command-line interface and computational notebook compatibility, allowing for accessible, flexible, portable and fully reproducible neuroimaging analysis on personal workstations, high-performance computers and the cloud.

Wound Healing Effect of Lippia sidoides and Myracrodruon urundeuva Nanogel.

Wound healing is a natural regenerative response to tissue injury and the conventional treatments consists of the use wound dressings with local administration of medicines, but, in some cases, are only partially effective and limited by toxicity or ineffective anti-microbial protection. Medicinal plants such as Lippia sidoides and Myracrodruon urundeuva have shown interesting pharmacological activities, allied to this, the association of these medicinal plants and nanotechnology, could mean an advantage in relation to classical approach. This study investigated the effect of a nanogel loaded with Lippia sidoides essential oil and Myracrodruon urundeuva extract (NAA) in an excisional wound healing model in rats. Animals were anesthetized and skin wounds were made using a metal punch. The groups were treated with vehicle, NAA or collagenase gel, for 7, 14 or 21 days and then sacrificed for tissue analysis. NAA did not show acute dermal irritation, further significantly reduced (p<0.05) the final wound area, accelerated the wound contraction and organization of collagen in the group treated for 14 days. The data presented here demonstrate the therapeutic potential for the use of nanotechnology associated with medicinal plants and provides evidence that corroborate with the use of L. sidoides and M. urundeuva as healing medicinal plants.

Effect of physical activity on the relationship between adiposity and cardiac autonomic modulation in female breast cancer survivors: a longitudinal study.

This longitudinal study aimed to analyze the influence of physical activity (PA) on the relationship between body adiposity and cardiac autonomic modulation (CAM) in women survivors of breast cancer. We collected body adiposity through electrical bioimpedance considering body fat percentage (BFP), CAM through heart rate variability (considering RMSSD, SDNN, PNN50, LF (m2), HF (m2), SD1 indexes and SD1/SD2 ratio) and PA through a questionnaire in 64 participants (58.0 ± 9.6 years), recruited through the local association of support for breast cancer and by direct indications from city mastologists. After insertion of PA into the multivariate statistical model, significant attenuation was observed in the relationship between body adiposity and CAM for the indices: SDNN (ß = -0.94; 95 percent CI: -1.93; 0.04; p = .060) and SD1/SD2 (ß = -0.01;95 percent CI = -0.02; 0.001; p = .065). In conclusion, it was observed that PA was able to mitigate the relationships between BFP and CAM (considering SDNN index and SD1/SD2 ratio) in breast cancer survivors.

Association Between Physical Activity Levels in Different Domains and Cardiac Autonomic Modulation in Breast Cancer Survivors: A Cross-sectional Study.

BACKGROUND: Breast cancer survivors frequently present cardiac autonomic dysfunction. Physical activity (PA) has been associated with better cardiac autonomic modulation (CAM) in breast cancer survivors. OBJECTIVE: This study aimed to analyze the association between CAM and PA levels performed in different domains (work and occupation, sport and exercise, and leisure time and commuting) in breast cancer survivors. METHODS: This is a cross-sectional study with 99 breast cancer survivors (age, 55.3 ± 10.4 years). Cardiac autonomic modulation was assessed by heart rate variability, and PA levels at work and occupation, sport and exercise, and leisure time and commuting were assessed using the Baecke PA questionnaire. The sum of these 3 domains provided the total PA. The Mann-Whitney test was used to compare CAM between active and inactive women in different domains of PA. RESULTS: Cardiac autonomic modulation was similar between active and inactive women in the different domains ( P > .05). However, when considering the total PA, active breast cancer survivors presented higher SDNN (average standard deviation of all normal RR intervals) (20.0 ± 13.4 vs 28.8 ± 14.0; P = .008) and SD2 (standard deviation of the long-term intervals between consecutive heartbeats) indices (29.2 ± 17.3 vs 38.7 ± 19.9; P = .005) compared with their inactive counterparts. CONCLUSION: Breast cancer survivors with higher total PA presented better CAM compared with their less active peers. IMPLICATIONS FOR PRACTICE: The results of this study are promising and show the importance of increasing PA levels in different domains for the maintenance of cardiovascular health among breast cancer survivors.

Carvacrol-Loaded Nanoemulsion Promotes Tocolytic and Anti-Dysmenorrhea Effects in Rodents.

INTRODUCTION: Carvacrol is a phenolic constituent of essential oils that has antinociceptive, anti-inflammatory, and antioxidant activities. METHOD: This study aimed to evaluate the in vitro spasmolytic and in vivo anti-dysmenorrhea potential of a nanoemulsion-containing carvacrol (nanoCARV). RESULTS: In isolated rat uterus, nanoCARV reduced spontaneous contractions (pEC50 = 3.91 ± 0.25) and relaxed preparations pre-contracted with oxytocin (pEC50 = 3.78 ± 0.2), carbachol (pEC50 = 4.15 ± 0.4), prostaglandin F2α (pEC50 = 3.00 ± 0.36), and KCl (pEC50 = 3.98 ± 0.32). The investigation of the mechanism of action revealed significant differences (p < 0.05) between the pEC50 values of nanoCARV in the absence or presence of aminophylline or tetraethylammonium. In a primary dysmenorrhea model, treatment with nanoCARV reduced the number of oxytocin-induced abdominal writhes. CONCLUSIONS: These data indicate that the anti-dysmenorrhea effect of nanoCARV may be related to the relaxation of uterine smooth muscle, with participation of the cAMP signaling pathway and potassium channels.

Letramento funcional em saúde em renais crônicos: um desafio na abordagem preventiva / Alfabetización funcional en salud en pacientes renales crónicos: un desafío en el enfoque preventivo / Functional health literacy in chronic kidney disease patients: a challenge in the preventive approach

Resumo Objetivo Identificar a prevalência de letramento funcional em saúde e analisar a associação entre os níveis de letramento funcional em saúde e as variáveis clínicas e sociodemográficas em pacientes renais crônicos não dialíticos. Métodos Estudo transversal realizado com 167 renais crônicos em acompanhamento no ambulatório de nefrologia de um município de grande porte do estado de Minas Gerais, Brasil. Para as entrevistas foram utilizados questionário sociodemográfico e clínico e a versão brasileira do Short Assessment of Health Literacy for Portuguese Speaking Adults - SAHLPA-18, para mensurar o letramento funcional em saúde. Realizado estatística descritiva para variáveis sociodemográficas e clínicas; testes de correlação e modelos de regressão lineares para associação com letramento funcional em saúde. Resultados A maior parte dos participantes era idosa com mediana de idade de 68 anos, 33,3% (56 pacientes) se encontravam no estágio 3B da doença renal crônica e 53,9% (90 pacientes) apresentaram letramento funcional em saúde inadequado. Não houve associação entre os níveis de letramento funcional em saúde e as variáveis clínicas. A maioria referiu não usar internet e o estágio mais avançado da doença renal crônica apresentou menores escores de letramento. Piores escores de letramento funcional em saúde também foi identificado naqueles com menor renda. Conclusão A maioria dos participantes apresentou letramento funcional em saúde inadequado. As variaveis clínicas não foram preditoras dos ecores de letramento. No entanto, escores mais baixos de letramento em saúde foram identificados naqueles em estágio mais avancado da doença renal, menor renda e menor uso da internet.

Resumen Objetivo Identificar la prevalencia de la alfabetización funcional en salud y analizar la asociación entre los niveles de alfabetización funcional en salud y las variables clínicas y sociodemográficas en pacientes renales crónicos no dializados. Métodos Estudio transversal realizado con 167 pacientes renales crónicos con seguimiento en consultorios externos de nefrología de un municipio de gran porte del estado de Minas Gerais, Brasil. Para las entrevistas se utilizó un cuestionario sociodemográfico y clínico y la versión brasileña del Short Assessment of Health Literacy for Portuguese Speaking Adults - SAHLPA-18, para medir la alfabetización funcional en salud. Se realizó estadística descriptiva para variables sociodemográficas y clínicas, pruebas de correlación y modelos de regresión lineales para asociación con alfabetización funcional en salud. Resultados La mayoría de los participantes eran personas mayores de 68 años de mediana de edad, el 33,3 % (56 pacientes) se encontraba en la etapa 3B de la enfermedad renal crónica y el 53,9 % (90 pacientes) presentó alfabetización funcional en salud inadecuada. No hubo asociación entre los niveles de alfabetización funcional en salud y las variables clínicas. La mayoría relató que no usaba internet y la etapa más avanzada de la enfermedad renal crónica presentó menor puntaje de alfabetización. Se identificaron peores puntajes de alfabetización funcional en salud en aquellos con menores ingresos. Conclusión La mayoría de los participantes presentó alfabetización funcional en salud inadecuada. Las variables clínicas no fueron predictoras de los puntajes de alfabetización. Sin embargo, se identificaron puntajes más bajos de alfabetización en salud en aquellos en etapa más avanzada de la enfermedad renal, con menores ingresos y menor uso de internet.

Abstract Objective To identify the prevalence of functional health literacy and analyze the association between functional health literacy levels and clinical and sociodemographic variables in non-dialysis chronic kidney disease patients. Methods This is a cross-sectional study carried out with 167 chronic kidney disease patients being monitored at the nephrology outpatient clinic of a large city in the state of Minas Gerais, Brazil. For the interviews, a sociodemographic and clinical questionnaire and the Brazilian version of the Short Assessment of Health Literacy for Portuguese Speaking Adults (SAHLPA-18) were used to measure functional health literacy. Descriptive statistics were performed for sociodemographic and clinical variables, and correlation tests and linear regression models for association with functional health literacy. Results Most participants were older adults with a median age of 68 years, 33.3% (56 patients) were in stage 3B of chronic kidney disease and 53.9% (90 patients) had inadequate functional health literacy. There was no association between functional health literacy levels and clinical variables. The majority reported not using the internet and the more advanced stage of chronic kidney disease had lower literacy scores. Worse functional health literacy scores were also identified in those with lower income. Conclusion Most participants had inadequate functional health literacy. Clinical variables were not predictors of literacy scores. However, lower health literacy scores were identified in those with more advanced stage kidney disease, lower income and less internet use.

A contribuição de terapeutas ocupacionais no domínio da gestão de risco e desastres: um protocolo de revisão de escopo / Contribution of occupational therapists to the field of risk and disaster management: a scoping review protocol

Resumo Introdução Desastres trazem consequências humanas, socioeconômicas e ambientais e agravam situações de vulnerabilidade. Tanto países centrais, altamente industrializados, como países com dificuldades econômicas estão sujeitos a esses eventos. No Brasil, a pandemia de COVID-19 e o rompimento de barragens evidenciam dificuldades em se antecipar e responder esses tipos de eventos. Ações da terapia ocupacional no campo das emergências e desastres são escassas na literatura, notadamente na esfera da prevenção. Objetivo Explorar as evidências da contribuição de terapeutas ocupacionais no domínio da gestão de risco e desastres a partir das características, prioridades e principais áreas de interesse da produção intelectual em terapia ocupacional. Método Uma pesquisa abrangente será conduzida nos periódicos Disasters, Hazards & Crisis in Public Policy, International Journal of Mass Emergencies and Disasters, and Risk, International Journal of Risk Reduction e Journal of Contingencies and Crisis Management, assim como nas bases de dados Occupational Therapy Literature Search Service (OTDBASE), PubMed e Web of Science. Critérios de inclusão Ações e experiências no âmbito da terapia ocupacional, notadamente aquelas de terapeutas ocupacionais na gestão de riscos e desastres, encontradas em estudos revisados por pares, que adotem métodos quantitativos, qualitativos e mistos, nos idiomas espanhol, inglês e português, sem restrição temporal. A abordagem preconizada pelo Joanna Briggs Institute (JBI) para seleção de estudos, avaliação crítica, extração e síntese de dados será utilizada.

Abstract Introduction Disasters bring human, socioeconomic, and environmental consequences and exacerbate situations of vulnerability. Both highly industrialized core countries and those facing economic difficulties are subject to these events. In Brazil, the COVID-19 pandemic and the collapse of dams highlight difficulties in anticipating and responding to these types of events. Actions of occupational therapy in the field of emergencies and disasters are scarce in the literature, notably in the sphere of prevention. Objective To explore the evidence of the contribution of occupational therapists in the field of risk management and disasters based on the characteristics, priorities, and main areas of interest of intellectual production in occupational therapy. Method A comprehensive search will be conducted in the journals Disasters, Hazards & Crisis in Public Policy, International Journal of Mass Emergencies and Disasters, and Risk, International Journal of Risk Reduction, and Journal of Contingencies and Crisis Management, as well as in the databases Occupational Therapy Literature Search Service (OTDBASE), PubMed, and Web of Science. Inclusion Criteria Actions and experiences in the field of occupational therapy, notably those of occupational therapists in risk and disaster management, found in peer-reviewed studies adopting quantitative, qualitative, and mixed methods, in Spanish, English, and Portuguese, without temporal restriction. The approach advocated by the Joanna Briggs Institute (JBI) for study selection, critical appraisal, and data collection and synthesis will be used.

3-Substituted Coumarins Inhibit NorA and MepA Efflux Pumps of Staphylococcus aureus.

Coumarins are compounds with scientifically proven antibacterial properties, and modifications to the chemical structure are known to improve their effects. This information is even more relevant with the unbridled advances of antibiotic resistance, where Staphylococcus aureus and its efflux pumps play a prominent role. The study's objective was to evaluate the potential of synthetic coumarins with different substitutions in the C-3 position as possible inhibitors of the NorA and MepA efflux pumps of S. aureus. For this evaluation, the following steps took place: (i) the determination of the minimum inhibitory concentration (MIC); (ii) the association of coumarins with fluoroquinolones and ethidium bromide (EtBr); (iii) the assessment of the effect on EtBr fluorescence emission; (iv) molecular docking; and (v) an analysis of the effect on membrane permeability. Coumarins reduced the MICs of fluoroquinolones and EtBr between 50% and 87.5%. Coumarin C1 increased EtBr fluorescence emission between 20 and 40% by reinforcing the evidence of efflux inhibition. The molecular docking results demonstrated that coumarins have an affinity with efflux pumps and establish mainly hydrogen bonds and hydrophobic interactions. Furthermore, C1 did not change the permeability of the membrane. Therefore, we conclude that these 3-substituted coumarins act as inhibitors of the NorA and MepA efflux pumps of S. aureus.

Migração, trabalho e violência: interfaces com a Saúde / Migration labor and violence: interfaces with healthcare / Migración trabajo y violencia: interfaces con la salud

A cartilha é um material educativo fruto da pesquisa "Migração, saúde e violências: experiências de trabalhadoras(es) migrantes e refugiadas(os) no Rio de Janeiro", durante a qual foram escutadas(os) migrantes e refugiadas(os) residentes no Brasil, especificamente no estado do Rio de Janeiro. Os deslocamentos humanos são uma realidade de dimensões globais e garantir o acesso e a permanência de migrantes e refugiadas(os) em postos de trabalho seguros, saudáveis e não violentos deve ser uma das finalidades de sociedades que prezam pela justiça social. A migração e o refúgio podem trazer mudanças na forma de organização familiar e a necessidade de buscar emprego, casa, estudo, relações de amizade e redes de apoio. Ao mesmo tempo em que a migração e o refúgio podem ser experiências que tragam novos recomeços, os sentimentos de incerteza, insegurança, medo, saudades e preocupação estão presentes no cotidiano de migrantes e refugiadas(os) e se expressam também na esfera do trabalho. Associado a isso, o mundo do trabalho tem passado por profundas transformações, principalmente nas últimas cinco décadas, que vêm impactando a vida de trabalhadoras(es), como o aumento do desemprego, contratações temporárias, baixos salários e a permanência de trabalho escravizado e forçado. Portanto, é preciso reconhecê-las para enfrentá-las, de modo a garantir um ambiente de trabalho seguro e saudável para todas(os). (AU)

Unveiling Microbial Chemical Interactions Based on Metabolomics Approaches.

Microorganisms are ubiquitous in diverse habitats and studying their chemical interactions with the environment and comprehend its complex relations with both hosts and environment, are crucial for the development of strategies to control microbial diseases. This chapter discusses the importance of studying microorganisms with agricultural benefits, using specialized metabolites as examples. Herein we highlight the challenges and opportunities in utilizing microorganisms as alternatives to synthetic pesticides and fertilizers in agriculture. Genome-guided investigations and improved analytical methodologies are necessary to characterize diverse and complex biomolecules produced by microorganisms. Predicting and isolating bioproducts based on genetic information have become a focus for researchers, aided by tools like antiSMASH, BiG-SCAPE, PRISM, and others. However, translating genomic data into practical applications can be complex. Therefore, integrating genomics, transcriptomics, and metabolomics enhances chemical characterization, aiding in discovering new metabolic pathways and specialized metabolites. Additionally, elicitation is one promising strategy to enhance beneficial metabolite production. Finally, identify and characterize microbial secondary metabolites remain challenging due to their low production, complex chemical structure characterization and different environmental factors necessary for metabolite in vitro production.

Variability of visual field maps in human early extrastriate cortex challenges the canonical model of organization of V2 and V3.

Visual field maps in human early extrastriate areas (V2 and V3) are traditionally thought to form mirror-image representations which surround the primary visual cortex (V1). According to this scheme, V2 and V3 form nearly symmetrical halves with respect to the calcarine sulcus, with the dorsal halves representing lower contralateral quadrants, and the ventral halves representing upper contralateral quadrants. This arrangement is considered to be consistent across individuals, and thus predictable with reasonable accuracy using templates. However, data that deviate from this expected pattern have been observed, but mainly treated as artifactual. Here, we systematically investigate individual variability in the visual field maps of human early visual cortex using the 7T Human Connectome Project (HCP) retinotopy dataset. Our results demonstrate substantial and principled inter-individual variability. Visual field representation in the dorsal portions of V2 and V3 was more variable than in their ventral counterparts, including substantial departures from the expected mirror-symmetrical patterns. In addition, left hemisphere retinotopic maps were more variable than those in the right hemisphere. Surprisingly, only one-third of individuals had maps that conformed to the expected pattern in the left hemisphere. Visual field sign analysis further revealed that in many individuals the area conventionally identified as dorsal V3 shows a discontinuity in the mirror-image representation of the retina, associated with a Y-shaped lower vertical representation. Our findings challenge the current view that inter-individual variability in early extrastriate cortex is negligible, and that the dorsal portions of V2 and V3 are roughly mirror images of their ventral counterparts.

Impact of a modified implant macrogeometry on biomechanical parameters and bone-related markers in rats.

This study investigated the impact of a modified implant macrogeometry on peri-implant healing and its effect on bone-related molecules in rats. Eighteen rats received one implant in each tibia: the control group received implants with conventional macrogeometry and the test group received implants with modified macrogeometry. After 30 days, the implants were removed for biomechanical analysis and the bone tissue around them was collected for quantifying gene expression of OPN, Runx2, ß-catenin, BMP-2, Dkk1, and RANKL/OPG. Calcein and tetracycline fluorescent markers were used for analyzing newly formed bone at undecalcified sections of the tibial implants. These fluorescent markers showed continuous bone formation at cortical bone width and sparse new bone formed along the medullary implant surface in both groups. However, higher counter-torque values and upregulation of OPN expression were achieved by test implants when compared to controls. The modified macrogeometry of implants optimized peri-implant healing, favoring the modulation of OPN expression in the osseous tissue around the implants.