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1.
Nature ; 626(8001): 1056-1065, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38122823

RESUMO

The temporal lobe of the human brain contains the entorhinal cortex (EC). This region of the brain is a highly interconnected integrative hub for sensory and spatial information; it also has a key role in episodic memory formation and is the main source of cortical hippocampal inputs1-4. The human EC continues to develop during childhood5, but neurogenesis and neuronal migration to the EC are widely considered to be complete by birth. Here we show that the human temporal lobe contains many young neurons migrating into the postnatal EC and adjacent regions, with a large tangential stream persisting until the age of around one year and radial dispersal continuing until around two to three years of age. By contrast, we found no equivalent postnatal migration in rhesus macaques (Macaca mulatta). Immunostaining and single-nucleus RNA sequencing of ganglionic eminence germinal zones, the EC stream and the postnatal EC revealed that most migrating cells in the EC stream are derived from the caudal ganglionic eminence and become LAMP5+RELN+ inhibitory interneurons. These late-arriving interneurons could continue to shape the processing of sensory and spatial information well into postnatal life, when children are actively interacting with their environment. The EC is one of the first regions of the brain to be affected in Alzheimer's disease, and previous work has linked cognitive decline to the loss of LAMP5+RELN+ cells6,7. Our investigation reveals that many of these cells arrive in the EC through a major postnatal migratory stream in early childhood.


Assuntos
Movimento Celular , Neurônios , Lobo Temporal , Animais , Pré-Escolar , Humanos , Lactente , Córtex Entorrinal/citologia , Córtex Entorrinal/fisiologia , Eminência Ganglionar/citologia , Interneurônios/citologia , Interneurônios/fisiologia , Macaca mulatta , Neurônios/citologia , Neurônios/fisiologia , Análise da Expressão Gênica de Célula Única , Lobo Temporal/citologia , Lobo Temporal/crescimento & desenvolvimento
2.
Emerg Infect Dis ; 30(2): 384-386, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38167202

RESUMO

We determined that the dengue outbreak in São Tomé and Príncipe during 2022 was caused by dengue virus serotype 3 genotype III. Phylogenomic analyses showed that the outbreak strain was closely related to the newly identified GIII-American-II lineage and that the virus probably was introduced from the Americas.


Assuntos
Vírus da Dengue , Dengue , Humanos , São Tomé e Príncipe , Vírus da Dengue/genética , Filogenia , Genótipo , Dengue/epidemiologia , Surtos de Doenças
3.
Environ Monit Assess ; 194(8): 568, 2022 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-35794258

RESUMO

In this study, the multi-marker approach was used for the first time with a highly urbanized lake located in the city of Fortaleza, Brazil, to provide a comprehensive view of temporal trends in sources of pollutants and evaluate the relation between the influence of anthropogenic activities and socioeconomic development. Total concentrations of the markers analyzed ranged from 21.0 to 103.8 ng g-1, 450.2 to 2390.2 ng g-1, and 233.8 to 9827.3 ng g-1 for ∑PAHs, ∑n-alk, and ∑sterols, respectively. Concentrations and patterns of PAH, AH, and sterol ratio distribution changed over time and may be associated with different episodes in the history of the city of Fortaleza. The marker ratio distribution in the sediment core revealed an overlap of natural and anthropogenic sources, with degraded oil, biogenic inputs, pyrogenic processes, and fecal contamination from humans and animals in the past changing to petroleum fossil inputs and high contamination from sewage in the present day. The distribution of markers and the chronological history of Fortaleza revealed two distinct periods related to human activities during the development of the city. In the first period (prior to the 1950s), the main human activities were animal breeding and the use of biomass for domestic activities, public and cargo transportation, and commercial activities, especially food production. In the second period (after the 1950s), expansion of the city occurred due to the so-called Brazilian economic miracle and the main human activities were industrialization and urbanization processes, involving deforestation, paving, sewage discharge, and petroleum combustion.


Assuntos
Petróleo , Poluentes Químicos da Água , Animais , Efeitos Antropogênicos , Brasil , Monitoramento Ambiental , Sedimentos Geológicos , Esgotos , Poluentes Químicos da Água/análise
4.
Lancet ; 393(10189): 2440-2454, 2019 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-31155275

RESUMO

Gender is not accurately captured by the traditional male and female dichotomy of sex. Instead, it is a complex social system that structures the life experience of all human beings. This paper, the first in a Series of five papers, investigates the relationships between gender inequality, restrictive gender norms, and health and wellbeing. Building upon past work, we offer a consolidated conceptual framework that shows how individuals born biologically male or female develop into gendered beings, and how sexism and patriarchy intersect with other forms of discrimination, such as racism, classism, and homophobia, to structure pathways to poor health. We discuss the ample evidence showing the far-reaching consequences of these pathways, including how gender inequality and restrictive gender norms impact health through differential exposures, health-related behaviours and access to care, as well as how gender-biased health research and health-care systems reinforce and reproduce gender inequalities, with serious implications for health. The cumulative consequences of structured disadvantage, mediated through discriminatory laws, policies, and institutions, as well as diet, stress, substance use, and environmental toxins, have triggered important discussions about the role of social injustice in the creation and maintenance of health inequities, especially along racial and socioeconomic lines. This Series paper raises the parallel question of whether discrimination based on gender likewise becomes embodied, with negative consequences for health. For decades, advocates have worked to eliminate gender discrimination in global health, with only modest success. A new plan and new political commitment are needed if these global health aspirations and the wider Sustainable Development Goals of the UN are to be achieved.


Assuntos
Atenção à Saúde , Sexismo , Fatores Socioeconômicos , Feminino , Humanos , Masculino
5.
J Neurosci ; 38(16): 3880-3889, 2018 04 18.
Artigo em Inglês | MEDLINE | ID: mdl-29530987

RESUMO

Fractones are extracellular matrix structures in the neural stem cell niche of the subventricular zone (SVZ), where they appear as round deposits named bulbs or thin branching lines called stems. Their cellular origin and what determines their localization at this site is poorly studied, and it remains unclear whether they influence neural stem and progenitor cell formation, proliferation, and/or maintenance. To address these questions, we analyzed whole-mount preparations of the lateral ventricle of male and female mice by confocal microscopy using different extracellular matrix and cell markers. We found that bulbs are rarely connected to stems and that they contain laminin α5 and α2 chains, respectively. Fractone bulbs were profusely distributed throughout the SVZ and appeared associated with the center of pinwheels, a critical site for adult neurogenesis. We demonstrate that bulbs appear at the apical membrane of ependymal cells at the end of the first week after birth. The use of transgenic mice lacking laminin α5 gene expression (Lama5) in endothelium and in FoxJ1-expressing ependymal cells revealed ependymal cells as the source of laminin α5-containing fractone bulbs. Deletion of laminin α5 from ependymal cells correlated with a 60% increase in cell proliferation, as determined by phospho-histone H3 staining, and with a selective reduction in the number of slow-dividing cells. These results indicate that fractones are a key component of the SVZ and suggest that laminin α5 modulates the physiology of the neural stem cell niche.SIGNIFICANCE STATEMENT Our work unveils key aspects of fractones, extracellular matrix structures that are present in the SVZ that still lack a comprehensive characterization. We show that fractones extensively interact with neural stem cells, whereas some of them are located precisely at pinwheel centers, which are hotspots for adult neurogenesis. Our results also demonstrate that fractones increase in size during aging and that their interactions with neural stem and progenitor cells become more complex in old mice. Last, we show that fractone bulbs are produced by ependymal cells and that their laminin content regulates neural stem cells.


Assuntos
Epêndima/citologia , Laminina/metabolismo , Nicho de Células-Tronco , Animais , Proliferação de Células , Epêndima/metabolismo , Matriz Extracelular/metabolismo , Feminino , Fatores de Transcrição Forkhead/genética , Fatores de Transcrição Forkhead/metabolismo , Laminina/genética , Ventrículos Laterais/citologia , Ventrículos Laterais/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Células-Tronco Neurais/citologia , Células-Tronco Neurais/metabolismo
6.
Arch Environ Contam Toxicol ; 68(1): 132-47, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25398222

RESUMO

This study focuses on the discussion of different lines of evidence (LoEs) applied to a sediment-quality assessment that considered the following: chemical concentrations of metals; polycyclic aromatic hydrocarbons (PAHs) in estuarine waters, sediments, and oysters (native and caged Crassostrea brasiliana); PAHs in semipermeable membrane devices (SPMDs); simultaneously extracted metals-acid volatile sulfides (SEM-AVS); benthic community assessment (the exploratory benthic index and the relative benthic index); chronic toxicity tests with the sea urchin Lytechinus variegatus; and bioaccumulation models. Significantly contaminated sediments from the Santos Estuarine System and the consequent toxicity of tested organisms were measured. Caged oysters presented bioaccumulation rates ≤2,500% of total PAH content and 200% of metal content when compared with control organisms from an uncontaminated area. SPMD results presented the same bioaccumulation pattern as caged oysters but at lower concentrations. Benthic communities presented some alterations, and there was a predominance of tolerant species in the inner part of the estuary. According to the SEM-AVS approach, metals should be assumed to be nonbioavailable, but experiments with transplanted C. brasiliana showed metal bioaccumulation, particularly in the cases of chromium, copper, mercury, and zinc. The weight-of-evidence approach was applied to compare and harmonize LoEs commonly used in sediment-quality assessments and to then classify estuary environments according to both their potential for having adverse effects on the biota and their possible ecological risks. All of the results of these approaches (except for SEM-AVS) were found to complement each other.


Assuntos
Monitoramento Ambiental/métodos , Estuários , Poluentes Químicos da Água/análise , Animais , Brasil , Sedimentos Geológicos/química , Metais/análise , Metais/metabolismo , Ostreidae/metabolismo , Hidrocarbonetos Policíclicos Aromáticos/análise , Hidrocarbonetos Policíclicos Aromáticos/metabolismo , Rios/química , Poluentes Químicos da Água/metabolismo
7.
Environ Monit Assess ; 186(2): 815-34, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24078050

RESUMO

Although the Ibirité reservoir (an urban tropical eutrophic reservoir) has been the recipient of the discharge of a large volume of raw urban sewage, the key cause of ecosystem degradation has been historically solely attributed to the discharge of effluents from an oil refinery. This fact motivated an investigation to unravel the compositions of contaminants in the sediments to evaluate their distributions, possible sources, and potential impacts on sediment­water quality. The concentrations of polycyclic aromatic and aliphatic hydrocarbons and of metals and metalloids were, in general, significantly lower than some selected polluted sites used for comparison. Calculated distribution indexes showed that the hydrocarbon sources were petrogenic, pyrogenic, and biogenic. Only a few PAHs exceeded the threshold effects level (TEL) guideline. Industrial activities are the presumed sources of metals and metalloids except for copper, which is from copper sulfate used as algaecide in the reservoir. The bioavailable concentrations of some metal and metalloid exceeded the TEL­PEL guidelines. The acid volatile sulfide concentration was greater than that of the simultaneously extracted metals in the clayey­silty reservoir sediments, whereas the opposite result was observed for the sandy sediments of the tributaries. The sediment interstitial water toxic units were >1 for metals, thus indicating that metals are potentially toxic to the benthos. Considering the data set generated in this study, it can be concluded that the degradation of Ibirité reservoir and its tributaries cannot be solely attributed to the input of hydrocarbons, but predominantly to the discharge of raw urban sewage and effluents from other industrial sources.


Assuntos
Monitoramento Ambiental , Sedimentos Geológicos/química , Poluentes Químicos da Água/análise , Cidades , Eutrofização , Metais/análise , Hidrocarbonetos Policíclicos Aromáticos/análise , Clima Tropical
8.
Cien Saude Colet ; 29(4): e19402023, 2024 Apr.
Artigo em Português, Inglês | MEDLINE | ID: mdl-38655966

RESUMO

In contemporary Brazil, the number of male fathers taking care of their sons and daughters and the initiatives to produce content about fatherhood on Instagram have been significant. This article aims to analyze the concepts that support the digital activism of homoparenting on Instagram, based on gender studies with men. To this end, a qualitative study was conducted using the life narrative method in a digital environment. The results were analyzed and divided into the following sections: parenting project, personal experience of fatherhood, articulation with LGBT political agenda when parenthood becomes a "business", and haters, criticism, and adverse reactions. It was concluded that the reflection on the experience of fatherhood/masculinity itself is crossed by the social marker of the difference in sexual orientation and the activism for rights that sustain content production. Thus, the uniqueness of each fatherhood is highlighted since the fact of being gay constructs the fatherhood experience for each man. Despite the initiatives brought forth in this study, changes are still in progress, as rights activism coexists with the advancement of conservative forces, which limit the expressions of sexual and gender otherness.


No Brasil contemporâneo tem sido expressivo tanto o número de homens-pais assumindo o cuidado de seus filhos e filhas, quanto das iniciativas de produção de conteúdo sobre paternidades no Instagram. Este artigo visa analisar as concepções que sustentam o ativismo digital da homoparentalidade no Instagram, a partir dos estudos de gênero com homens. Para tal, realizou-se um estudo qualitativo em ambiência digital, utilizando o método das narrativas de vida. Os resultados foram analisados e divididos nas seguintes seções: projeto de parentalidade; experiência pessoal de paternidade; articulação de agenda política LGBT; quando a paternidade vira um "negócio"; e haters, críticas e reações negativas. Conclui-se que a reflexão sobre a própria experiência de paternidade/masculinidade, atravessada pelo marcador social da diferença orientação sexual e o ativismo por direitos que sustentam a produção de conteúdo. Assim, ressalta-se a singularidade de cada paternidade, pois o fato de ser gay constrói a experiência de paternidade particular para cada homem. Apesar das iniciativas expostas, mudanças ainda são incipientes, visto que o ativismo por direitos coexiste com o avanço de forças conservadoras, que limitam as expressões das alteridades sexuais e de gênero.


Assuntos
Pai , Homossexualidade Masculina , Poder Familiar , Masculino , Humanos , Brasil , Pai/psicologia , Homossexualidade Masculina/psicologia , Poder Familiar/psicologia , Masculinidade , Filmes Cinematográficos , Minorias Sexuais e de Gênero/psicologia , Direitos Humanos , Adulto
9.
Cien Saude Colet ; 29(4): e18412023, 2024 Apr.
Artigo em Português, Inglês | MEDLINE | ID: mdl-38655960

RESUMO

The present article aims to bridge the gaps or deepen the debate to discuss the relationship between homoparenthood and health. This essay is anchored in specific literature. We seek to work on the following questions throughout the text: (i) How is the central theme of this discussion historically outlined? (ii) How does homoparenthood appear in scientific health production in general? (iii) What sociopolitical dimensions emerge around homoparenthood-health relationships? and (iv) What are the limitations and possibilities for exercising reproductive rights between same-sex couples? Among the conclusions, we underscore the challenge of facing the strangeness of homoparenthood against the idea of the so-called called "normal" family based on heteronormative logic. Even in countries with some legal apparatus assuring the rights to homoparental families, their members suffer prejudice, discrimination, and violence.


Buscando preencher lacunas e/ou aprofundar o debate, o artigo objetiva problematizar aspectos que envolvem as relações entre homoparentalidade e saúde. O desenho metodológico é o de ensaio, ancorado em literatura específica. Ao longo do texto procura-se trabalhar as seguintes questões: (i) Como se esboça historicamente a temática central desta discussão? (ii) Como se afigura a homoparentalidade no campo da produção científica da saúde em geral? (iii) Quais dimensões sociopolíticas emergem em torno das relações homoparentalidade-saúde? e (iv) Quais são os limites e as possibilidades para o exercício dos direitos reprodutivos entre casais homoafetivos? Dentre as conclusões, destaca-se o desafio de se enfrentar o estranhamento da temática homoparentalidade para a ideia da família denominada de "normal", configurada a partir da lógica heteronormativa. Mesmo nos países em que há algum aparato jurídico que garanta direitos às famílias homoparentais, seus integrantes são alvo de preconceitos, discriminações e violências.


Assuntos
Direitos Sexuais e Reprodutivos , Humanos , Homossexualidade , Preconceito , Família/psicologia
10.
bioRxiv ; 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-39005355

RESUMO

Neurogenesis and gliogenesis continue in the Ventricular-Subventricular Zone (V-SVZ) of the adult rodent brain. B1 cells are astroglial cells derived from radial glia that function as primary progenitors or neural stem cells (NSCs) in the V-SVZ. B1 cells, which have a small apical contact with the ventricle, decline in numbers during early postnatal life, yet neurogenesis continues into adulthood. Here we found that a second population of V-SVZ astroglial cells (B2 cells), that do not contact the ventricle, function as NSCs in the adult brain. B2 cell numbers increase postnatally, remain constant in 12-month-old mice and decrease by 18 months. Transcriptomic analysis of ventricular-contacting and non-contacting B cells revealed key molecular differences to distinguish B1 from B2 cells. Transplantation and lineage tracing of B2 cells demonstrate their function as primary progenitors for adult neurogenesis. This study reveals how NSC function is relayed from B1 to B2 progenitors to maintain adult neurogenesis.

11.
Environ Monit Assess ; 185(3): 2395-406, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22717708

RESUMO

The quality of the water in a uranium-ore-mining area located in Caldas (Minas Gerais State, Brazil) and in a reservoir (Antas reservoir) that receives the neutralized acid solution leaching from the waste heaps generated by uranium mining was investigated. The samples were collected during four periods (October 2008, January, April and July 2009) from six sampling stations. Physical and chemical analyses were performed on the water samples, and the data obtained were compared with those of the Brazilian Environmental Standards and WHO standard. The water samples obtained from waste rock piles showed high uranium concentrations (5.62 mg L(-1)), high manganese values (75 mg L(-1)) and low average pH values (3.4). The evaluation of the water quality at the point considered the limit between the Ore Treatment Unit of the Brazilian Nuclear Industries and the environment (Consulta Creek) indicated contamination by fluoride, manganese, uranium and zinc. The Antas reservoir showed seasonal variations in water quality, with mean concentrations for fluoride (0.50 mg L(-1)), sulfate (16 mg L(-1)) and hardness (20 mg L(-1)) which were low in January, evidencing the effect of rainwater flowing into the system. The concentrations for fluoride, sulfate and manganese were close or above to the limits established by current legislation at the point where the treated mining effluent was discharged and downstream from this point. This study demonstrated that the effluent discharged by the UTM affected the quality of the water in the Antas reservoir, and thus the treatments currently used for effluent need to be reviewed.


Assuntos
Monitoramento Ambiental , Água Doce/química , Mineração , Urânio/análise , Poluentes Radioativos da Água/análise , Brasil , Contaminação Radioativa da Água/estatística & dados numéricos , Qualidade da Água/normas
12.
PLoS One ; 18(2): e0280365, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36730279

RESUMO

The present research objective was to analyze the offensive phase from Complex I in high-level male volleyball teams in a macro- and micro-level view, through the inter e intra-team variability analysis of eight best teams of the 2018 Men's Volleyball World Championship over the social network analysis and eigenvector centrality. The sample consisted of 22 matches and 2,743 offensive actions, resulting in 8 sub-networks with 368 nodes and 6221 edges. The results showed from macro view the variables that presented highest centrality values were Attack Zone 4 (range 0.56-0.90), Attack Tempo 2 (0.65-0.87), Power Attack (0.62-0.94), No Touch Block (0.61-1), Attack Effect Continuity (0.59-0.94), and Middle Blocker Centralized (0.60-0.95). In a micro view, Reception Effect, Play Position, Reception Zone, and Block Composition showed high variability in each sub-network. The intra- and inter-team variability presented the importance of to respect each team idiosyncrasies and to consider the different approaches to the game and success.


Assuntos
Desempenho Atlético , Voleibol , Humanos , Masculino
13.
Percept Mot Skills ; 130(6): 2603-2620, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37879103

RESUMO

Our primary objective in this study was to investigate the offensive strategies employed in the attack phase of men's volleyball, specifically focusing on side-out as stratified by the type of confrontation that was determined by the opponent's team performance. We analyzed 5524 attacking actions during 22 games of the 12 teams that participated in the Volleyball Men's Superliga (season 2021-2022). Based on their final rankings in the championship, we classified these teams into three tiers: high-performance, intermediate-performance, and low-performance. Subsequently, we examined the dynamics of these matches using Social Network Analysis. We found that the opponent teams' performance levels did not influence the game dynamics. Notably, the eigenvector values were prominently higher for Attack Zones 2 and 4, wherein the middle-blocker jumped to attack close to the setter across all networks. Thus, setters opted for traditional and low-risk strategies to minimize errors, disregarding available information about the skill level of the opposing team, making their offensive tactics predictable.


Assuntos
Desempenho Atlético , Voleibol , Masculino , Humanos
14.
Cien Saude Colet ; 27(10): 3825-3834, 2022 Oct.
Artigo em Português, Inglês | MEDLINE | ID: mdl-36134789

RESUMO

This essay presents a timeline of the construction of health policies for lesbians, gays, bisexuals, transvestites and transsexuals (LGBT) in Brazil drawing on the concepts of sexual politics. Beginning with the creation of the Unified Health System, we outline the first health care policies developed in response to the AIDS epidemic in the 1990s. We then go on to show how, the fruit of dialogue between the government and the gay rights movement, LGBT health became the object of public policies focusing on human rights, comprehensive care, and strengthening the citizenship for people who deviate from hetero-cis-normativity. Against the backdrop of the rising tide of conservatism and dismantling of progress on LGBT rights, we highlight current challenges for achieving comprehensive health care that takes into account sexual and gender diversity.


Este ensaio procura produzir memórias sobre os percursos da construção de políticas de saúde para lésbicas, gays, bissexuais, travestis e transexuais (LGBT) no Brasil, a partir da noção de política sexual. Com base na construção de uma linha do tempo que tem por ponto de partida a criação do Sistema Único de Saúde, o artigo apresenta: as primeiras produções de cuidados em saúde a partir da epidemia de Aids nos anos 1990; como a saúde se torna objeto de políticas públicas, fruto do diálogo governamental com o movimento social organizado, tendo como referência a perspectiva dos direitos humanos e da produção de cidadanização para pessoas dissidentes da cisheteronorma; e por fim, a abordagem de saúde integral como premissa da política de saúde LGBT. Em um momento de avanços de forças conservadoras e de desmonte de direitos, são apontados os desafios atuais para a construção do cuidado integral em saúde que leve em consideração a diversidade sexual e de gênero.


Assuntos
Homossexualidade Feminina , Minorias Sexuais e de Gênero , Brasil , Feminino , Política de Saúde , Direitos Humanos , Humanos , Masculino
15.
J Thorac Imaging ; 37(4): 246-252, 2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35749622

RESUMO

PURPOSE: Our objective was to evaluate whether the normal lung index (NLI) from quantitative computed tomography (QCT) analysis can be used to predict mortality as well as pulmonary function tests (PFTs) in patients with chronic obstructive pulmonary disease (COPD) and interstitial lung disease (ILD). MATERIALS AND METHODS: Normal subjects (n=20) and patients with COPD (n=172) and ILD (n=114) who underwent PFTs and chest CT were enrolled retrospectively in this study. QCT measures included the NLI, defined as the ratio of the lung with attenuation between -950 and -700 Hounsfield units (HU) over the total lung volume (-1024 to -250 HU, mL), high-attenuation area (-700 to -250 HU, %), emphysema index (>6% of pixels < -950 HU), skewness, kurtosis, and mean lung attenuation. Coefficients of correlation between QCT measurements and PFT results in all subjects were calculated. Univariate and multivariate survival analyses were performed to assess mortality prediction by disease. RESULTS: The Pearson correlation analysis showed that the NLI correlated moderately with the forced expiratory volume in 1 second in subjects with COPD (r=0.490, P<0.001) and the forced vital capacity in subjects with ILD (r=0.452, P<0.001). Multivariate analysis revealed that the NLI of <70% was a significant independent predictor of mortality in subjects with COPD (hazard ratio=3.14, P=0.034) and ILD (hazard ratio=2.72, P=0.005). CONCLUSION: QCT analysis, specifically the NLI, can also be used to predict mortality in individuals with COPD and ILD.


Assuntos
Doenças Pulmonares Intersticiais , Doença Pulmonar Obstrutiva Crônica , Enfisema Pulmonar , Humanos , Pulmão/diagnóstico por imagem , Doenças Pulmonares Intersticiais/diagnóstico por imagem , Doença Pulmonar Obstrutiva Crônica/diagnóstico por imagem , Enfisema Pulmonar/diagnóstico por imagem , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos
16.
Cad Saude Publica ; 38(4): e00104221, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35508028

RESUMO

This article uses a socio-anthropological framework to explore the stigmas around interactions with children born with congenital Zika syndrome caused by the Zika virus epidemic in two Brazilian municipalities. Semi-structured interviews were conducted with parents and other relatives. We reflected on the search for meaning when having a baby with unexpected body marks, the moral suffering, the societal ableism, the burden of care, and the need for support networks. We concluded that public policies, especially social policies (health, education, and social assistance), are essential for compensatory mechanisms, recognition, and social inclusion of these children and their families.


Assuntos
Epidemias , Microcefalia , Infecção por Zika virus , Zika virus , Brasil/epidemiologia , Criança , Humanos , Lactente , Microcefalia/epidemiologia , Microcefalia/etiologia , Estigma Social , Infecção por Zika virus/epidemiologia
17.
Science ; 376(6590): eabn8861, 2022 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-35420933

RESUMO

Terreros-Roncal et al. investigated the impacts of human neurodegeneration on immunostainings assumed to be associated with neurogenesis. However, the study provides no evidence that putative proliferating cells are linked to neurogenesis, that multipolar nestin+ astrocytes are progenitors, or that mature-looking doublecortin+ neurons are adult-born. Their histology-marker expression differs from what is observed in species where adult hippocampal neurogenesis is well documented.


Assuntos
Hipocampo , Doenças Neurodegenerativas , Neurogênese , Adulto , Astrócitos , Hipocampo/citologia , Hipocampo/crescimento & desenvolvimento , Humanos , Doenças Neurodegenerativas/metabolismo , Neurogênese/fisiologia , Neurônios/fisiologia
18.
FASEB J ; 24(11): 4513-22, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20643907

RESUMO

Regeneration of spinal cord injury (SCI) is a major topic of biomedical research. Laminin is an extracellular matrix protein implicated in neural development and regeneration, but despite that, there are no reports of exogenous laminin contributing to improve the outcome of experimental SCI. Here we investigated whether a biomimetic polymer of laminin assembled on pH acidification, henceforth called polylaminin, could be used to treat SCI in rats. Acute local injection of polylaminin, but not of nonpolymerized laminin, improved motor function after thoracic compression, partial or complete transection. In the latter case, the BBB score for open field locomotion 8 wk after lesion increased from 4.2 ± 0.48 to 8.8 ± 1.14 in animals treated with polylaminin of human origin. Accordingly, neurons retrogradely labeled from the sublesion stump were detected in the spinal cord and brain stem, indicating regrowth of short and long fibers across a complete transection. Polylaminin also played an unsuspected anti-inflammatory role, which underlies the early onset of its positive effects on locomotion from the first week after treatment. The beneficial effects of polylaminin were not observed in animals treated with the nonpolymerized protein or vehicle only. We propose that polylaminin is a promising therapeutic agent to treat human SCI.


Assuntos
Materiais Biomiméticos/uso terapêutico , Laminina/uso terapêutico , Regeneração Nervosa , Polímeros/uso terapêutico , Traumatismos da Medula Espinal/tratamento farmacológico , Animais , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Axônios/efeitos dos fármacos , Materiais Biomiméticos/farmacologia , Feminino , Humanos , Concentração de Íons de Hidrogênio , Regeneração Nervosa/efeitos dos fármacos , Polímeros/farmacologia , Ratos
19.
Cien Saude Colet ; 26(7): 2729-2738, 2021 Jul.
Artigo em Português, Inglês | MEDLINE | ID: mdl-34231686

RESUMO

This paper discusses the phenomenon of violence in the affective-sexual trajectories of young, cisgender gay men, from popular strata, in the metropolitan region of Rio de Janeiro, Brazil. Brazilian literature on violence against gay men generally focuses on the discrimination suffered by this population. However, the violence they are submitted to among family relationships due to their sexual orientation, or even their relationships known as "dating" or "hookup", is hardly discussed. This qualitative study used in-depth interviews based on a semi-structured guide to discuss violence during the young gay men's affective-sexual trajectory. The results evidenced multiple faces of violence during childhood and adolescence in family relationships, spanning their affective-sexual relationships in adolescence and youth, including sexual, physical, psychological, and institutional violence. Support networks are limited, for example, to a few friends and access to blogs on the Internet. No health professional was cited as a helping source. There is a need to discuss the prevention of violence and discuss health promotion of this social group, expanding the perspective on the various contemporary ways of relating intimately.


Este artigo aborda o fenômeno da violência nas trajetórias afetivo-sexuais de jovens gays cisgênero, pertencentes a camadas populares da região metropolitana do Rio de Janeiro, Brasil. A literatura brasileira sobre violência contra homens gays, geralmente, tem como foco a discriminação sofrida por esta população, mas pouco se problematiza a violência que eles sofrem nas relações familiares devido à sua orientação sexual, ou ainda, em suas relações ditas como "namoro" ou "ficar". Com o objetivo de discutir a presença de violências durante a trajetória afetivo-sexual dos jovens, este estudo qualitativo realizou entrevistas em profundidade a partir de um roteiro semiestruturado. Os resultados mostraram que há múltiplas faces de violência que ocorrem durante a infância e adolescência nas relações familiares, perpassando nos seus relacionamentos afetivo-sexuais na adolescência e juventude, incluindo violências sexuais, físicas, psicológicas e institucionais. As redes de apoio dos jovens são limitadas, como exemplo, a poucos amigos e ao acesso de blogs na internet. Nenhum profissional de saúde foi citado pelos jovens como fonte de ajuda. Destaca-se também a necessidade de debater a prevenção da violência e promoção da saúde destes jovens, ampliando o olhar para as várias formas contemporâneas de se relacionar intimamente.


Assuntos
Homens , Minorias Sexuais e de Gênero , Adolescente , Brasil , Feminino , Humanos , Masculino , Comportamento Sexual , Violência
20.
Cien Saude Colet ; 26(1): 179-183, 2021 Jan.
Artigo em Português, Inglês | MEDLINE | ID: mdl-33533839

RESUMO

This article presents reflections on masculinity and the social construction of gender - based on the global phenomenon of the new coronavirus pandemic - produced by researchers who are part of the national research team on comprehensive health care policy for men in Brazil. From a gender-based standpoint, the article contends that it is necessary to note that cis heteronormative male socialization is guided by three core issues: 1) the submission to practices of care of self and others; 2) the rejection of preventive health practices, due to a distorted matrix of risk perception (and a certain sense of "invulnerability"); 3) the domestic dynamics marked by postures of command, order, and honor. These dimensions of everyday life were profoundly upset in this first phase of the epidemic, in which confinement became the most recommended alternative. These issues are configured as recurring (though not recent) repertoires that glorify the central model of a male order that needs to become an object of reflection, insofar as they endanger the health of men and women and, more broadly, of the status quo of the accepted tenets of domestic and social order.


Este artigo opinião apresenta reflexões sobre masculinidades e construções de gênero - a partir do fenômeno global da pandemia do novo coronavírus -, produzidas por pesquisadores/as que integram a equipe nacional de uma pesquisa sobre política de atenção integral aos homens na saúde, no Brasil. A partir de leituras baseadas em gênero, o artigo argumenta que é preciso atentarmos que a socialização masculina cisheteronormativa se orienta a partir de três eixos: 1) a abjeção às práticas de cuidado de si e dos outros; 2) a rejeição às práticas preventivas em saúde, dada uma distorcida matriz de percepção de risco (e certo sentimento de "invulnerabilidade"); 3) a dinâmica doméstica marcada por posições de comando, ordenamento e honra. Essas dimensões da vida cotidiana foram profundamente provocadas nesta primeira fase da epidemia, em que o confinamento se tornou a alterativa mais recomendável. Esses eixos se configuram como repertórios recorrentes (embora não recentes) que reificam o modelo central de uma ordem masculina que precisa se tornar objeto de reflexão, na medida em que colocam em risco a saúde de homens e mulheres e mais amplamente dos pactos civilizatórios e da ordem social.


Assuntos
COVID-19/epidemiologia , Relações Interpessoais , Masculinidade , Pandemias , Socialização , Brasil/epidemiologia , Feminino , Humanos , Masculino , Prevenção Primária , SARS-CoV-2 , Autocuidado , Interação Social
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