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1.
Epidemiol Serv Saude ; 33(spe2): e20231188, 2024.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-39230126

RESUMEN

OBJECTIVE: To describe vaccination coverage and hesitation for the basic children's schedule in Belo Horizonte and Sete Lagoas, Minas Gerais state, Brazil. METHODS: Population-based epidemiological surveys performed from 2020 to 2022, which estimated vaccine coverage by type of immunobiological product and full schedule (valid and ministered doses), according to socioeconomic strata; and reasons for vaccination hesitancy. RESULTS: Overall coverage with valid doses and vaccination hesitancy for at least one vaccine were, respectively, 50.2% (95%CI 44.1;56.2) and 1.6% (95%CI 0.9;2.7), in Belo Horizonte (n = 1,866), and 64.9% (95%CI 56.9;72.1) and 1.0% (95%CI 0.3;2.8), in Sete Lagoas (n = 451), with differences between socioeconomic strata. Fear of severe reactions was the main reason for vaccination hesitancy. CONCLUSION: Coverage was identified as being below recommended levels for most vaccines. Disinformation should be combated in order to avoid vaccination hesitancy. There is a pressing need to recover coverages, considering public health service access and socioeconomic disparities. MAIN RESULTS: Vaccination coverage of children up to 4 years old was 50.2% in Belo Horizonte, and 64.9% in Sete Lagoas. Fear of severe reactions and believing that vaccination against eradicated diseases is unnecessary were the main reasons for vaccination hesitancy. IMPLICATIONS FOR SERVICES: Recovery of high vaccination coverage among children, considering public health service access conditions and socioeconomic inequities. Acting on reasons for hesitancy that can assist in targeting actions. PERSPECTIVES: The multifactorial context of vaccination hesitancy demands the development of health education strategies to raise awareness about child immunization.


Asunto(s)
Factores Socioeconómicos , Cobertura de Vacunación , Vacilación a la Vacunación , Vacunación , Humanos , Brasil , Cobertura de Vacunación/estadística & datos numéricos , Vacilación a la Vacunación/estadística & datos numéricos , Vacilación a la Vacunación/psicología , Lactante , Vacunación/estadística & datos numéricos , Masculino , Femenino , Esquemas de Inmunización , Preescolar , Vacunas/administración & dosificación
2.
Epidemiol Serv Saude ; 33(spe2): e20231216, 2024.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-39194084

RESUMEN

OBJECTIVE: To describe timely vaccination completion and obstacles in the first 24 months of life in Brazil, examining associations with maternal race/skin color. METHODS: Study participants were 37,801 children born in 2017 and 2018 included in the National Immunization Coverage Survey. We calculated prevalence and 95% confidence intervals for timely vaccine completeness and obstacles at 5, 12 and 24 months of life, according to maternal race/skin color. Associations were analyzed using logistic regression. RESULTS: 7.2% (95%CI 6.3;8.2) of mothers faced difficulties in taking their children to be vaccinated, and 23.4% (95%CI 21.7;25.1) were not vaccinated when taken. These proportions were 75% (95%CI 1.25;2.45) and 97% (95%CI 1.57;2.48) higher, respectively, among Black mothers. At least one vaccination was delayed among 49.9% (95%CI 47.8;51.9) and 61.1% (95%CI 59.2;63.0) of children by 5 and 12 months, respectively. These rates were higher among Black/mixed race mothers. CONCLUSION: There are racial inequalities in both the obstacles faced and in vaccination rates in Brazil. MAIN RESULTS: Marked racial inequalities were found in the obstacles to vaccination of children under 24 months in Brazil and to timely vaccination at 5 months and in the first year of life. IMPLICATIONS FOR SERVICES: Racial inequalities in the occurrence of vaccination shortcomings in health services, in the objective restrictions faced by families in taking their children to vaccination centers and in incomplete vaccination in a timely manner need to be addressed by the Brazilian National Health System. PERSPECTIVES: Equal public policies to address barriers to vaccination and qualification of health services need to be implemented. Studies need to deepen understanding of the structural determinants that lead to racial disparities.


Asunto(s)
Disparidades en Atención de Salud , Madres , Vacunación , Humanos , Brasil , Lactante , Vacunación/estadística & datos numéricos , Femenino , Estudios Retrospectivos , Disparidades en Atención de Salud/estadística & datos numéricos , Madres/estadística & datos numéricos , Preescolar , Masculino , Cobertura de Vacunación/estadística & datos numéricos , Recién Nacido , Adulto , Estudios de Cohortes , Factores Socioeconómicos , Población Negra/estadística & datos numéricos , Factores de Tiempo , Programas de Inmunización/estadística & datos numéricos , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Adulto Joven , Población Blanca/estadística & datos numéricos
3.
Biology (Basel) ; 13(7)2024 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-39056725

RESUMEN

(1) Objective: The aim of this study was to assess the biological behavior of bone tissue on a machined surface (MS) and modifications made by a laser beam (LS) and by a laser beam incorporated with hydroxyapatite (HA) using a biomimetic method without thermic treatment (LHS). (2) Methods: Scanning electron microscopy coupled with energy-dispersive X-ray spectrometry (SEM/EDX) was performed before and after installation in the rabbit tibiae. A total of 20 Albinus rabbits randomly received 30 implants of 3.75 × 10 mm in the right and left tibias, with two implants on each surface in each tibia. In the animals belonging to the 4-week euthanasia period group, intramuscular application of the fluorochromes calcein and alizarin was performed. In implants placed mesially in the tibiofemoral joint, biomechanical analysis was performed by means of a removal torque (N/cm). The tibias with the implants located distally to the joint were submitted for analysis by confocal laser microscopy (mineral apposition rate) and for histometric analysis by bone contact implant (%BIC) and newly formed bone area (%NBA). (3) Results: The SEM showed differences between the surfaces. The biomechanical analysis revealed significant differences in removal torque values between the MSs and LHSs over a 2-week period. Over a 4-week period, both the LSs and LHSs demonstrated removal torque values statistically higher than the MSs. BIC of the LHS implants were statistically superior to MS at the 2-week period and LHS and LS surfaces were statistically superior to MS at the 4-week period. Statistical analysis of the NBA of the implants showed difference between the LHS and MS in the period of 2 weeks. (4) Conclusions: The modifications of the LSs and LHSs provided important physicochemical modifications that favored the deposition of bone tissue on the surface of the implants.

4.
J Fungi (Basel) ; 10(7)2024 Jul 16.
Artículo en Inglés | MEDLINE | ID: mdl-39057375

RESUMEN

This study aimed to estimate the prevalence of cryptococcal antigenemia detected by lateral flow assay (LFA) in AIDS patients and its accuracy in the diagnosis of cryptococcosis. Conducted at a university hospital in Brazil from March 2015 to July 2017, it included AIDS patients over 18 years old with a CD4+ count ≤ 200 cells/mm3. Cryptococcal antigen (CrAg) detection using LFA and latex agglutination (LA), along with blood and urine cultures, were performed. The reference standard was the identification of Cryptococcus spp. in clinical specimens through microbiological or histopathological examination. Among 230 patients, the prevalence of CrAg detected by LFA (CrAg LFA) was 13.0%. Factors associated with cryptococcal antigenemia included fever, vomiting, seizures, and a lack of antiretroviral therapy. The sensitivity and specificity of CrAg LFA were 83.9% and 98.0%, respectively. The positive predictive value (PPV) was 86.7%, the negative predictive value (NPV) was 97.5%, and overall accuracy was 96.1%. Cross-reactions were observed in patients with histoplasmosis and paracoccidioidmycosis, but not with aspergillosis or positive rheumatoid factor. The study concludes that the LFA is a useful tool for detecting cryptococcal antigenemia in severely immunocompromised AIDS patients due to its high NPV, specificity, and PPV.

5.
Campo Grande; Fiocruz Mato Grosso do Sul; 25 may. 2024. 400 p. 23 KB.
No convencional en Portugués | LILACS, Coleciona SUS, PIE | ID: biblio-1555045

RESUMEN

Coletânea dedicada aos estudos das respostas rápidas do Programa Educacional em Vigilância em Saúde no enfrentamento da COVID-19 e outras Doenças Virais (VigiEpidemia). Esse tema é de extrema relevância e atualidade em nosso contexto da saúde global e na resposta as emergências em saúde pública (ESP) de forma geral. As ESP, que englobam surtos e epidemias, desastres e desassistência à população, representam desafios complexos que exigem respostas ágeis e eficazes por parte das autoridades sanitárias, profissionais da saúde e comunidades como um todo. Até o momento, a pandemia de COVID-19 foi a maior ESP do Século XXI. Ela serviu como um lembrete doloroso da vulnerabilidade da humanidade diante da ameaça de doenças virais. Esta ESP, que teve resposta catastrófica em diversos momentos, evidenciou a importância do investimento em preparação, vigilância e resposta, destacando a necessidade de sistemas de vigilância robustos, colaboração internacional, Inteligência epidemiológica e comunicação transparente para mitigar o impacto devastador das doenças infecciosas na sociedade. As lições aprendidas com a pandemia de COVID-19 são vastas e multifacetadas. A importância da pesquisa, da educação em saúde e do desenvolvimento de vacinas foi evidenciada como uma prioridade crucial na proteção da saúde pública mundial. O investimento em pesquisas e em cursos para formação de profissionais que possam estar atentos as mudanças nos padrões e comportamentos das doenças infecciosas, além de atuar na resposta rápida quando necessário, é fundamental para estarmos preparados para as futuras pandemias. A vacinação, por exemplo, sempre foi uma das ferramentas mais poderosas para evitar surtos e epidemias e, durante a pandemia de COVID-19, ajudou a controlar os óbitos pela doença e possibilitou que voltássemos a ter uma vida normal. Além da vacina contra COVID-19, as vacinas de influenza e dengue também são exemplos notáveis de avanços científicos que desempenham um papel fundamental na prevenção de futuras ESP. Ao explorar os diversos aspectos da resposta, monitoramento e controle de surtos, epidemias e pandemias, esta coletânea visa fornecer uma compreensão abrangente dos desafios enfrentados, das melhores práticas e das estratégias eficazes para mitigar os impactos adversos desses eventos. Espera-se que este trabalho não apenas informe e eduque, mas também inspire ações concretas para fortalecer a recuperação e resiliência dos sistemas de saúde e proteger o bem-estar das comunidades mais vulneráveis do nosso pais.


A collection dedicated to the study of rapid responses by the Educational Program in Health Surveillance in addressing COVID-19 and other Viral Diseases (VigiEpidemia). This theme is of utmost relevance and timeliness in our context of global health and in responding to public health emergencies (PHE) in general. PHEs, which encompass outbreaks and epidemics, disasters, and neglect of the population, represent complex challenges that require swift and effective responses from health authorities, healthcare professionals, and communities as a whole. To date, the COVID-19 pandemic has been the largest PHE of the 21st century. It served as a painful reminder of humanity's vulnerability in the face of viral disease threats. This PHE, which had catastrophic responses at various times, highlighted the importance of investing in preparedness, surveillance, and response, underscoring the need for robust surveillance systems, international collaboration, epidemiological intelligence, and transparent communication to mitigate the devastating impact of infectious diseases on society. The lessons learned from the COVID-19 pandemic are vast and multifaceted. The importance of research, health education, and vaccine development was highlighted as a crucial priority in protecting global public health. Investing in research and training courses to prepare professionals who can be attentive to changes in the patterns and behaviors of infectious diseases and act quickly when needed is essential to be prepared for future pandemics. Vaccination, for example, has always been one of the most powerful tools to prevent outbreaks and epidemics, and during the COVID-19 pandemic, it helped control disease-related deaths and allowed us to return to a normal life. In addition to the COVID-19 vaccine, influenza and dengue vaccines are also notable examples of scientific advancements that play a key role in preventing future PHEs. By exploring the various aspects of response, monitoring, and control of outbreaks, epidemics, and pandemics, this collection aims to provide a comprehensive understanding of the challenges faced, best practices, and effective strategies to mitigate the adverse impacts of these events. It is hoped that this work will not only inform and educate but also inspire concrete actions to strengthen the recovery and resilience of health systems and protect the well-being of the most vulnerable communities in our country.


Asunto(s)
Virosis/prevención & control , Varicela , Vacunación , Personal de Salud , Dengue/prevención & control , Gripe Humana , Habilidades de Afrontamiento/educación , Sarampión , Enfermedades Endémicas/prevención & control , Síndrome de Guillain-Barré , Fiebre Chikungunya
6.
Campo Grande; Fiocruz Mato Grosso do Sul; 25 may. 2024. 418 p. 4.168 KB.
No convencional en Portugués | LILACS, Coleciona SUS, PIE | ID: biblio-1555046

RESUMEN

As Políticas Informadas por Evidências (PIE) tem ocupado uma posição de destaque nas últimas décadas. Nota-se, portanto, um aumento do estimulo e da valorização da síntese do conhecimento cientifico para apoiar o desenvolvimento de políticas públicas de saúde baseadas em evidências. No Brasil, o Ministério da Saúde institucionalizou em 2009 a Rede para Politicas Informadas por Evidencias (Evidence-Informed Policy Network ­ EVIPNet Brasil). Essa Rede foi uma criação da Organização Mundial da Saúde (OMS) para promover o uso sistemático e transparente de evidências cientificas no desenvolvimento e na implementação de políticas de saúde, proporcionando o intercâmbio de conhecimento entre gestores, pesquisadores e representantes da sociedade civil, e facilitando a formulação, a implementação de políticas e a gestão dos serviços e sistemas de saúde. Coordenada pelo Departamento de Ciência e Tecnologia da Secretaria de Ciência, Tecnologia e Inovação e do Complexo Econômico-Industrial da Saúde do Ministério da Saúde (DECIT/SCTICS/MS), a EVIPNet Brasil, integrada por Núcleos de Evidências em Saúde (NEv), oferece periodicamente cursos diversos sobre PIE, além de materiais, como diretrizes metodológicas, para auxiliar na síntese de evidências para tomada de decisão em saúde. Com o evento da pandemia da COVID-19, a busca por evidências cientificas tornou-se mais intensa. A cobrança por resposta a curto prazo marcou esse período recente, desafiando o mundo todo a aprimorar mecanismos de elaboração, tradução e disseminação de conhecimento científico. Nesse contexto, surge o VigiEpidemia, um Programa Educacional em Vigilância e Cuidado em Saúde no Enfrentamento da COVID-19 e de outras doenças virais que oferece qualificação aos trabalhadores do Sistema Único de Saúde (SUS). Por meio desse programa, foram elaborados produtos, baseados no Portfolio de Produtos do Serviço de Produção de Evidências para Apoio a Tomada de Decisão, do DECIT, que tiveram como objetivo principal estimular o uso de evidências cientificas no cotidiano dos serviços de saúde. Este e-book oferece a leitora e ao leitor 26 pesquisas criteriosamente selecionadas com conteúdo interessante produzidos por especializandos no âmbito do VigiEpidemia, dividido em duas partes: a primeira sobre COVID-19 e outras doenças virais e a segunda sobre Dengue e outras arboviroses.


Evidence-Informed Policies (EIP) have gained prominence over the past few decades. Consequently, there has been an increase in the stimulation and appreciation of the synthesis of scientific knowledge to support the development of evidence-based public health policies. In Brazil, the Ministry of Health institutionalized the Evidence-Informed Policy Network (EVIPNet Brazil) in 2009. This network was an initiative by the World Health Organization (WHO) to promote the systematic and transparent use of scientific evidence in the development and implementation of health policies, facilitating knowledge exchange among managers, researchers, and representatives of civil society, and aiding in policy formulation, implementation, and the management of health services and systems. Coordinated by the Department of Science and Technology of the Secretariat of Science, Technology, Innovation, and the Economic-Industrial Health Complex of the Ministry of Health (DECIT/SCTICS/MS), EVIPNet Brazil, consisting of Health Evidence Centers (NEv), periodically offers various courses on EIP, along with resources such as methodological guidelines to assist in the synthesis of evidence for health decision-making. With the advent of the COVID-19 pandemic, the search for scientific evidence became more intense. The demand for short-term responses marked this recent period, challenging the world to enhance mechanisms for the elaboration, translation, and dissemination of scientific knowledge. In this context, the VigiEpidemia program emerged, an Educational Program in Health Surveillance and Care in addressing COVID-19 and other viral diseases, offering qualifications to workers of the Unified Health System (SUS). Through this program, products were developed based on the DECIT's Evidence Production Service Portfolio to Support Decision Making, primarily aimed at stimulating the use of scientific evidence in the daily operations of health services. This e-book provides the reader with 26 meticulously selected research studies with interesting content produced by specialists within the scope of VigiEpidemia, divided into two parts: the first on COVID-19 and other viral diseases, and the second on Dengue and other arboviruses.


Asunto(s)
Virus Sincitiales Respiratorios , Vacunación , COVID-19 , Sarampión , Revisión
7.
Mol Ecol Resour ; 24(6): e13981, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38775247

RESUMEN

Admixture is a common biological phenomenon among populations of the same or different species. Identifying admixed tracts within individual genomes can provide valuable information to date admixture events, reconstruct ancestry-specific demographic histories, or detect adaptive introgression, genetic incompatibilities, as well as regions of the genomes affected by (associative-) overdominance. Although many local ancestry inference (LAI) methods have been developed in the last decade, their performance was accessed using large reference panels, which are rarely available for non-model organisms or ancient samples. Moreover, the demographic conditions for which LAI becomes unreliable have not been explicitly outlined. Here, we identify the demographic conditions for which local ancestries can be best estimated using very small reference panels. Furthermore, we compare the performance of two LAI methods (RFMix and MOSAIC) with the performance of a newly developed approach (simpLAI) that can be used even when reference populations consist of single individuals. Based on simulations of various demographic models, we also determine the limits of these LAI tools and propose post-painting filtering steps to reduce false-positive rates and improve the precision and accuracy of the inferred admixed tracts. Besides providing a guide for using LAI, our work shows that reasonable inferences can be obtained from a single diploid genome per reference under demographic conditions that are not uncommon among past human groups and non-model organisms.


Asunto(s)
Genética de Población , Genética de Población/métodos , Humanos , Biología Computacional/métodos
8.
Acta Med Port ; 37(4): 316, 2024 Apr 01.
Artículo en Portugués | MEDLINE | ID: mdl-38631062

RESUMEN

On page 5, 3rd paragraph, line 7, where it reads, (in red): "(...) considering the international recommendation (1:10 000)8" It should read (in blue): "(...) considering the international recommendation (0.5:10 000)8" Still on page 5, 5th paragraph, line 8, where it reads, (in red): "(...) in the 40 - 50-year age group" It should read (in blue): "(...) below the 40 - 50-year age group" On page 8, key of Table 1, line 5, where it reads, (in red): "1: PORTATA 2021;" It should read (in blue): "1: PORDATA 2021;" Article published with errors: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/20321.


Na página 5, 3º parágrafo, linha 7, onde se lê, (a vermelho): "(...) considering the international recommendation (1:10 000)8" Deverá ler-se (a azul): "(...) considering the international recommendation (0.5:10 000)8" Ainda na página 5, 5º parágrafo, linha 8, onde se lê, (a vermelho): "(...) in the 40 - 50-year age group" Deverá ler-se (a azul): "(...) below the 40 - 50-year age group" Na página 8, legenda da Tabela 1, linha 5, onde se lê, (a vermelho): "1: PORTATA 2021;" Deverá ler-se (a azul): "1: PORDATA 2021;" Artigo publicado com erros: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/20321.

9.
MethodsX ; 12: 102650, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38550762

RESUMEN

Exposure and vulnerability analysis are valuable tools for wildfire management, especially important for local communities that suffer from very destructive events and that require mitigation approaches adjusted to their abilities and needs. We present a methodological procedure to analyze wildfire exposure levels, social vulnerability conditions and coping capacity at the local scale, for villages or small human settlements. The procedure was developed using GIS (Geographic Information Systems) and programming tools in R and Python, which can be adapted and updated depending on the data available. The development of accessible procedures and easily replicable methodologies facilitates knowledge transfer and supports the application of mitigation and adaptation strategies, tailored to the conditions of the exposed areas.•A step-by-step procedure for the assessment of Exposure, Vulnerability, and Coping Capacity, using Python and R programming language.•Automated processes, easily replicable and adjustable to other areas.•Indications for adapting the methodology using European/international databases.

10.
Acta Med Port ; 37(6): 419-428, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38477300

RESUMEN

INTRODUCTION: Human resources in ophthalmology have recently received particular attention, and it has been questioned whether there is a sufficient number of workers. The aim of this study was to analyze and characterize Portugal's ophthalmologist population. METHODS: In this descriptive, cross-sectional study, an online questionnaire was sent to all ophthalmologists registered with the Portuguese College of Ophthalmology in December 2021. Information on the following variables was collected and analyzed: demographic factors, professional qualifications, professional activity, weekly professional activity and medium-term plans. RESULTS: Among the 910 registered ophthalmologists, a response rate of 64.7% was achieved. There were 0.9 ophthalmologists for every 10 000 inhabitants, 0.45:10 000 working in the public sector (0.35:10 000 full-time equivalent). Among the respondents, 57.6% were over 50 years old (59.6% male), 97.3% were Portuguese, 46.7% completed their residency in the Lisbon region, 27.3% complemented their programme with additional training, 9.5% had a PhD and approximately 58% lived and worked in large urban centres. Regarding professional activity, 58.5% of the respondents worked in the public sector (4.2% exclusively), while 67.9% worked in different economic sectors. The median number of weekly working hours reported was 45 hours, with those in the public sector reporting 35 hours. Private/social sector work and public sector work accounted for 12 926 hours/week and 10 808 hours/week, respectively. It was found that 31.4% of the respondents provided emergency medical services and that 52.8% performed surgical procedures more than once a week. Looking ahead, 38.7% of the ophthalmologists intended to reduce their workload within the next five years due to family reasons, fatigue and demotivation. The projected rate of retirement or cessation of activity in the next five years was estimated to be 1.7%, while an average of 20 new ophthalmologists are expected to enter the profession annually, resulting in a generational balance of 0.8%. CONCLUSION: While the number of ophthalmologists in Portugal meets the international recommendations, there is a shortage in the public sector and most ophthalmologists work in large urban centres. The number of ophthalmologists in Portugal is expected to be stable for the next five years.


Asunto(s)
Oftalmólogos , Portugal , Humanos , Estudios Transversales , Masculino , Femenino , Persona de Mediana Edad , Oftalmólogos/estadística & datos numéricos , Adulto , Oftalmología/estadística & datos numéricos , Censos , Encuestas y Cuestionarios , Sector Público/estadística & datos numéricos
11.
Clin Oral Investig ; 28(2): 154, 2024 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-38366095

RESUMEN

OBJECTIVES: The objective was to evaluate the effects of experimental apical periodontitis on the inflammatory, functional, biochemical, and redox parameters of the parotid and submandibular glands in rats. MATERIALS AND METHODS: Twenty 12-week-old male Wistar rats were randomly divided into two groups (n = 10): a control group and apical periodontitis group. After 28 days, the saliva was collected for salivary flow rate and biochemistry composition. Both glands were sampled for quantification of the tumor necrosis factor-alpha (TNF-α) and biochemical analyses of redox state. RESULTS: TNF-α concentrations were higher in both salivary glands adjacent to the periapical lesions in animals with apical periodontitis and also compared to the control group. The apical periodontitis group increased the salivary amylase, chloride, potassium, calcium, and phosphate. The total oxidant capacity increased in the parotid gland adjacent to the periapical lesions in the same rat and compared to the control group. Conversely, the total antioxidant capacity of the parotid glands on both sides in the apical periodontitis group was lower than that in the control group. Furthermore, glutathione peroxidase activity increased in the submandibular gland adjacent to the apical periodontitis group compared to the control group. CONCLUSIONS: Experimental apical periodontitis alters salivary biochemical composition, in addition to increasing inflammatory marker and inducing local disturbances in the redox state in the parotid and submandibular glands of male rats. CLINICAL RELEVANCE: Apical periodontitis could exacerbate the decline in oral health by triggering dysfunction in the salivary glands.


Asunto(s)
Periodontitis Periapical , Factor de Necrosis Tumoral alfa , Ratas , Masculino , Animales , Ratas Wistar , Factor de Necrosis Tumoral alfa/metabolismo , Glándulas Salivales , Glándula Submandibular , Glándula Parótida , Saliva/química , Oxidación-Reducción , Antioxidantes/metabolismo , Periodontitis Periapical/metabolismo
12.
Foods ; 13(3)2024 Jan 28.
Artículo en Inglés | MEDLINE | ID: mdl-38338555

RESUMEN

The use of free pectinases as clarification biocatalysts constitutes a well-established practice in the large-scale production of various types of wines. However, when in the form of free enzymes, the recovery and reusability of pectinases is difficult if not impossible. To address these limitations, the present study focuses on the noncovalent adsorption immobilization of a commercial pectinolytic preparation onto highly porous polyamide 6 (PA6) microparticles, both with and without magnetic properties, prepared via activated anionic polymerization. The two pectinase complexes resulting after immobilization underwent comparative activity and kinetic studies, contrasting them with the free enzyme preparation. In comparison with the free enzyme, the PA6-immobilized pectinase complexes exhibited more than double the specific activity toward the pectin substrate. They displayed a slightly higher affinity to the substrate while acting as faster catalysts that were more resistant to inhibition. Furthermore, the immobilized complexes were applied in the clarification process of industrial rosé must, whereby they demonstrated accelerated performance as compared with the free enzyme. Moreover, the PA6-immobilized pectinase biocatalysts offered the potential for three consecutive cycles of reuse, achieving complete rosé must clarification within relevant timeframes in the range of 3-36 h. All these results suggest the potential industrial application of the pectinases noncovalently immobilized upon PA6 microparticles.

13.
PLoS Pathog ; 20(1): e1011557, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38277417

RESUMEN

A proposed treatment for malaria is a combination of fosmidomycin and clindamycin. Both compounds inhibit the methylerythritol 4-phosphate (MEP) pathway, the parasitic source of farnesyl and geranylgeranyl pyrophosphate (FPP and GGPP, respectively). Both FPP and GGPP are crucial for the biosynthesis of several essential metabolites such as ubiquinone and dolichol, as well as for protein prenylation. Dietary prenols, such as farnesol (FOH) and geranylgeraniol (GGOH), can rescue parasites from MEP inhibitors, suggesting the existence of a missing pathway for prenol salvage via phosphorylation. In this study, we identified a gene in the genome of P. falciparum, encoding a transmembrane prenol kinase (PolK) involved in the salvage of FOH and GGOH. The enzyme was expressed in Saccharomyces cerevisiae, and its FOH/GGOH kinase activities were experimentally validated. Furthermore, conditional knockout parasites (Δ-PolK) were created to investigate the biological importance of the FOH/GGOH salvage pathway. Δ-PolK parasites were viable but displayed increased susceptibility to fosmidomycin. Their sensitivity to MEP inhibitors could not be rescued by adding prenols. Additionally, Δ-PolK parasites lost their capability to utilize prenols for protein prenylation. Experiments using culture medium supplemented with whole/delipidated human plasma in transgenic parasites revealed that human plasma has components that can diminish the effectiveness of fosmidomycin. Mass spectrometry tests indicated that both bovine supplements used in culture and human plasma contain GGOH. These findings suggest that the FOH/GGOH salvage pathway might offer an alternate source of isoprenoids for malaria parasites when de novo biosynthesis is inhibited. This study also identifies a novel kind of enzyme related to isoprenoid metabolism.


Asunto(s)
Diterpenos , Fosfomicina/análogos & derivados , Hemiterpenos , Parásitos , Pentanoles , Humanos , Animales , Bovinos , Parásitos/metabolismo , Fosfatos , Terpenos/farmacología , Terpenos/metabolismo
14.
Cogitare Enferm. (Online) ; 29: e91838, 2024. tab, graf
Artículo en Portugués | LILACS-Express | LILACS, BDENF - Enfermería | ID: biblio-1564383

RESUMEN

RESUMO Objetivo: Analisar a experiência de pacientes com câncer de cabeça e pescoço quanto ao autocuidado com a radiodermite associado aos fatores sociodemográficos e clínico-patológicos. Método: Estudo descritivo com abordagem qualitativa, desenvolvido em um Centro de Referência de Alta Complexidade em Oncologia em Belém - Pará - Brasil. Realizado com entrevistas e análise de prontuário. Os dados foram coletados de fevereiro a abril de 2022, e tratados por análise de conteúdo de Bardin subsidiada pelo software IRAMUTEQ. Resultados: Emergiram três subcategorias: importância do conhecimento do paciente quanto a radioterapia; identificação dos efeitos adversos relacionados ao tratamento; e, orientação do enfermeiro quanto ao autocuidado. Considerações Finais: O conhecimento dos pacientes foi incipiente sobre o tratamento, efeitos adversos foram identificados pelo impacto negativo em sua autoestima e autoimagem e a orientação do autocuidado foi efetiva com a reprodução do cuidado. O estudo oportuniza a elaboração de estratégia de ensino adequada em pesquisas futuras.


ABSTRACT Objective: To analyze the experience of patients with head and neck cancer regarding self-care for radiodermatitis associated with sociodemographic and clinical-pathological factors. Method: A descriptive study with a qualitative approach, carried out at a High Complexity Oncology Reference Center in Belém - Pará - Brazil. It was conducted through interviews and analysis of medical records. The data were collected from February to April 2022 and processed using Bardin's content analysis supported by the IRAMUTEQ software. Results: Three subcategories emerged: The importance of the patient's knowledge about radiotherapy; Identification of adverse effects related to the treatment; and Nurses' guidance on self-care. Final Considerations: The patients' knowledge about the treatment was incipient, adverse effects were identified by the negative impact on their self-esteem and self-image, and self-care guidance was effective in reproducing care. The study provides an opportunity to develop an appropriate teaching strategy in future research.


RESUMEN Objetivo: Analizar la experiencia de pacientes con cáncer de cabeza y cuello sobre el autocuidado de la radiodermatitis asociado a factores sociodemográficos y clínico-patológicos. Método: Estudio descriptivo con enfoque cualitativo, desarrollado en un Centro de Referencia de Alta Complejidad en Oncología en Belém, Pará, Brasil. Realizado por medio de entrevistas y análisis de historias clínicas. Los datos se recopilaron de febrero a abril de 2022 y se procesaron mediante análisis de contenido de Bardin con ayuda del software IRAMUTEQ. Resultados: Surgieron tres subcategorías: importancia del conocimiento del paciente sobre radioterapia; identificación de los efectos adversos relacionados con el tratamiento; y orientación del enfermero sobre el autocuidado. Consideraciones finales: El conocimiento de los pacientes sobre el tratamiento era incipiente, ellos identificaron los efectos adversos debido al impacto negativo en su autoestima y autoimagen y la orientación de autocuidado fue efectiva dado que lograron reproducir el cuidado. El estudio contribuye a que se desarrollen estrategias de enseñanza adecuada en futuras investigaciones.

15.
Epidemiol. serv. saúde ; 33(spe2): e20231188, 2024. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1569170

RESUMEN

ABSTRACT Objective To describe vaccination coverage and hesitation for the basic children's schedule in Belo Horizonte and Sete Lagoas, Minas Gerais state, Brazil. Methods Population-based epidemiological surveys performed from 2020 to 2022, which estimated vaccine coverage by type of immunobiological product and full schedule (valid and ministered doses), according to socioeconomic strata; and reasons for vaccination hesitancy. Results Overall coverage with valid doses and vaccination hesitancy for at least one vaccine were, respectively, 50.2% (95%CI 44.1;56.2) and 1.6% (95%CI 0.9;2.7), in Belo Horizonte (n = 1,866), and 64.9% (95%CI 56.9;72.1) and 1.0% (95%CI 0.3;2.8), in Sete Lagoas (n = 451), with differences between socioeconomic strata. Fear of severe reactions was the main reason for vaccination hesitancy. Conclusion Coverage was identified as being below recommended levels for most vaccines. Disinformation should be combated in order to avoid vaccination hesitancy. There is a pressing need to recover coverages, considering public health service access and socioeconomic disparities.


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RESUMO Objetivo Descrever as coberturas e hesitação das vacinas do calendário básico infantil em Belo Horizonte e Sete Lagoas, Minas Gerais. Métodos Inquéritos epidemiológicos de base populacional realizados de 2020 a 2022, para estimar coberturas vacinais por tipo de imunobiológico e esquema completo (doses válidas e aplicadas) segundo estratos socioeconômicos, e os motivos de hesitação vacinal. Resultados A cobertura global com doses válidas e a hesitação vacinal de pelo menos uma vacina foram, respectivamente, de 50,2% (IC95% 44,1;56,2) e 1,6% (IC95% 0,9;2,7), em Belo Horizonte (n = 1.866), e de 64,9% (IC95% 56,9;72,1) e 1,0% (IC95% 0,3;2,8), em Sete Lagoas (n = 451), com diferenças entre os estratos. O receio de reações graves foi o principal motivo de hesitação vacinal. Conclusão Identificou-se coberturas abaixo do preconizado para a maioria das vacinas. A desinformação deve ser combatida, evitando-se a hesitação vacinal. Há necessidade premente de recuperar as coberturas, considerando acesso ao SUS e disparidades socioeconômicas.

16.
Epidemiol. serv. saúde ; 33(spe2): e20231216, 2024. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1569171

RESUMEN

ABSTRACT Objective To describe timely vaccination completion and obstacles in the first 24 months of life in Brazil, examining associations with maternal race/skin color. Methods Study participants were 37,801 children born in 2017 and 2018 included in the National Immunization Coverage Survey. We calculated prevalence and 95% confidence intervals for timely vaccine completeness and obstacles at 5, 12 and 24 months of life, according to maternal race/skin color. Associations were analyzed using logistic regression. Results 7.2% (95%CI 6.3;8.2) of mothers faced difficulties in taking their children to be vaccinated, and 23.4% (95%CI 21.7;25.1) were not vaccinated when taken. These proportions were 75% (95%CI 1.25;2.45) and 97% (95%CI 1.57;2.48) higher, respectively, among Black mothers. At least one vaccination was delayed among 49.9% (95%CI 47.8;51.9) and 61.1% (95%CI 59.2;63.0) of children by 5 and 12 months, respectively. These rates were higher among Black/mixed race mothers. Conclusion There are racial inequalities in both the obstacles faced and in vaccination rates in Brazil.


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RESUMO Objetivo Descrever a completude vacinal em tempo oportuno nos primeiros 24 meses de vida no Brasil e os obstáculos para vacinação, testando-se associações com raça/cor da pele materna. Métodos Fez-se coleta de informações sobre os nascidos em 2017 e 2018, constantes no Inquérito Nacional de Cobertura Vacinal. Foram calculados prevalência e intervalos de confiança de 95% de obstáculos à vacinação e completude vacinal em tempo oportuno aos 5 meses, primeiro e segundo ano, segundo raça/cor da pele materna. Empregou-se regressão logística para análise de associações. Resultados Analisaram-se dados de 37.801 crianças. Do total, 7,2% (IC95% 6,3;8,2) dos responsáveis enfrentaram dificuldades para levar seus filhos para vacinação e 23,4% (IC95% 21,7;25,1) das crianças não foram vacinadas, mesmo sendo levadas. Essas proporções foram 75% (IC95% 1,25;2,45) e 97% (IC95% 1,57;2,48) mais elevadas, respectivamente, entre pretas; e 49,9% (IC95% 47,8;51,9) e 61,1% (IC95% 59,2;63,0) das crianças tiveram atraso em alguma vacina até os 5 meses e o primeiro ano, respectivamente. Tais valores foram maiores entre pardas/pretas. Conclusão Há desigualdades raciais nos obstáculos enfrentados e na vacinação no Brasil.

17.
Animals (Basel) ; 13(23)2023 Dec 03.
Artículo en Inglés | MEDLINE | ID: mdl-38067091

RESUMEN

This study addresses the hypothesis that different acute stressors can cumulatively decrease milk yield. In fact, in a time of global warming, the impact of environmental stress and farm management practices on milk production remains unclear. In this context, our objective was to investigate the effect of acute and cumulative stress on gene expression in mammary tissue and their interactions with physiological responses and milk yield in Saanen goats. Thirty lactating goats were subjected to two treatments: (1) control (CT), in which goats were maintained following a habitual routine under comfort conditions; (2) stress (ST), in which the goats were subjected to different types of environmental stress: heat stress, adrenocorticotropic hormone administration, hoof care management, and exposure to rain. These stressors were performed sequentially, with one stress per day on four consecutive lactation days, to evaluate their effect on milk quality and milk yield. Our results showed that compared to CT goats, cumulative stress increased the gene expression of glucocorticoid receptor (GR), interferon-gamma (IFN-γ), superoxide dismutase (SOD), and catalase (CAT) in mammary tissue, which are indicators of cortisol action, inflammatory response, and antioxidant enzymes. Furthermore, the acute challenges imposed on ST goats changed their rectal temperature and respiratory frequency and increased cortisol, glucose, cholesterol, triglycerides, and high-density lipoprotein release in plasma when compared to CT goats. Although these physiological and metabolic responses restore homeostasis, ST goats showed lower milk yield and higher somatic cell count in milk than CT goats. In conclusion, the results confirmed our initial hypothesis that different acute stressors cumulatively decrease the milk yield in Saanen goats.

18.
Rev Enferm UFPI ; 12(1): e4010, 2023-12-12. tab e graf
Artículo en Inglés, Portugués | LILACS, BDENF - Enfermería | ID: biblio-1523661

RESUMEN

Objetivo: Caracterizar as metástases ósseas e os eventos relacionados ao esqueleto associando-os ao tempo de sobrevida em pessoas submetidas a radioterapia. Métodos Trata-se de um estudo retrospectivo, descritivo e transversal. Foi realizado em um Centro de Alta Complexidade em Oncologia, com prontuários de pessoas diagnosticadas com metástases ósseas. Resultados: Foram analisados 122 prontuários, a maioria dos pacientes era do sexo feminino (59,02%), com média de idade de 58,86 anos (±14,54). Os sítios primários mais incidentes foram a mama (43,44%) e a próstata (30,33%). O número de osso ou grupo de ossos atingidos foi, em média, de 3,09 (±2,14). A coluna vertebral foi a mais acometida (80,33%). Esta região também foi a mais irradiada no tratamento radioterápico (55,74%). A maioria dos pacientes recebeu 10 sessões de radioterapia (70,49%), em média 9,05 (±2,89). Quanto aos eventos relacionados ao esqueleto, 100% dos pacientes apresentavam registros de dor óssea, 32,78% sofreram fratura patológica, com tempo de sobrevida de 32,53 meses, e 10,65% apresentaram compressão medular, com sobrevida média de 41,52 meses. Conclusão: As metástases ósseas foram mais comuns na coluna vertebral. Todos os pacientes apresentaram registros de dor óssea, e a fratura patológica foi associada à menor sobrevida dos indivíduos. Descritores: Metástase Neoplásica; Osso e Ossos; Radioterapia; Enfermagem.


Objective: To characterize bone metastases and skeleton-related events associating them with survival time in people subjected to radiotherapy. Methods:This is a retrospective, descriptive and cross-sectional study. It was conducted in a High-Complexity Oncology Center with medical records of people diagnosed with bone metastases. Results:A total of 122 medical records were analyzed and most of the patients were female (59.02%), with a mean age of 58.86 years old (±14.54). The most incident primary sites were breast (43.44%) and prostate (30.33%). The mean number of bones or bone groups affected was 3.09 (±2.14). The spine was the most affected area (80.33%). This region was also the most irradiated in the radiotherapy treatments (55.74%). Most of the patients (70.49%) underwent 10 radiotherapy sessions, with a mean of 9.05 (±2.89). With regard to the skeleton-related events, 100% of the patients reported pain, 32.78% suffered pathological fractures with a survival time of 32.53 months, and 10.65% presented spine compression with a mean survival of 41.52 months. Conclusion:Bone metastases were more common in the spine. All the patients presented bone painrecords, and pathological fractures were associated with lower survival among the individuals. Descriptors: Neoplasm Metastasis; Bone and Bones; Radiotherapy; Nursing.


Asunto(s)
Radioterapia , Huesos , Enfermería , Metástasis de la Neoplasia
19.
Health Res Policy Syst ; 21(1): 105, 2023 Oct 12.
Artículo en Inglés | MEDLINE | ID: mdl-37828575

RESUMEN

BACKGROUND: Evidence-informed policymaking (EIPM) requires a set of individual and organizational knowledge, skills and attitudes that should be articulated with background factors and needs. In this regard, the development of an EIPM competency profile is important to support the diagnosis, planning and implementation of EIPM. PURPOSE: To present the process and outcomes of the development of an EIPM competency profile by an expert committee, to be applied in different contexts of the Brazilian Health System. METHODS: A committee of experts in EIPM shared different views, experiences and opinions to develop an EIPM competency profile for Brazil. In six consensus workshops mediated by facilitators, the committee defined from macro problems to key actions and performances essential for the competency profile. The development steps consisted of: (1) Constitution of the committee, including researchers, professionals with practical experience, managers, and educators; (2) Development of a rapid review on EIPM competency profiles; (3) Agreement on commitments and responsibilities in the processes; (4) Identification and definition of macro problems relating to the scope of the competency profile; and (5) Outlining of general and specific capacities, to be incorporated into the competency profile, categorized by key actions. RESULTS: The development of the EIPM competency profile was guided by the following macro problems: (1) lack of systematic and transparent decision-making processes in health policy management; (2) underdeveloped institutional capacity for knowledge management and translation; and (3) incipient use of scientific evidence in the formulation and implementation of health policies. A general framework of key actions and performances of the EIPM Competency Profile for Brazil was developed, including 42 specific and general key actions distributed by area of activity (Health Management, Scientific Research, Civil Society, Knowledge Translation, and Cross-sectional areas). CONCLUSIONS: The competency profile presented in this article can be used in different contexts as a key tool for the institutionalization of EIPM.


Asunto(s)
Política de Salud , Formulación de Políticas , Humanos , Brasil , Programas de Gobierno
20.
Arch Oral Biol ; 155: 105805, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37741048

RESUMEN

OBJECTIVE: To investigate the effects of the anticonvulsant valproic acid (VPA) on salivary glands in male rat using biochemical, functional, histomorphometric, and redox state parameters. MATERIALS AND METHODS: Twenty-four male Wistar rats were randomly distributed into three groups (n = 8 per group): Control (0.9% saline solution), VPA100 (100 mg/kg), and VPA400 (400 mg/kg). After 21 consecutive days of treatment with by intragastric gavage. Pilocarpine-induced saliva was collected to determine salivary flow rate, pH, buffering capacity, and biochemical composition. Analyses of histomorphometric parameters and redox balance markers were performed on the parotid and submandibular glands. RESULTS: Salivary flow rate, pH, buffering capacity, total protein, potassium, sodium, and chloride were similar between groups. However, phosphate and calcium were reduced in VPA400, while amylase was increased in both VPA100 and VPA400. We did not detect significant differences in the areas of acini, ducts, and connective tissue in the salivary glands between the groups. There were no significant changes in the redox status of the submandibular glands. In turn, in the parotid glands we detected reduced total oxidizing capacity and lipid peroxidation, measured as thiobarbituric acid reactive substances (TBARs) and higher uric acid concentration in both the VPA100 and VPA400 groups, and increased superoxide dismutase (SOD) in the VPA400 group. CONCLUSION: Chronic treatment with VPA modified the salivary biochemical composition and caused disruption in the redox state of the parotid gland in rats.


Asunto(s)
Anticonvulsivantes , Ácido Valproico , Ratas , Masculino , Animales , Anticonvulsivantes/farmacología , Ácido Valproico/farmacología , Ácido Valproico/análisis , Ácido Valproico/metabolismo , Ratas Wistar , Glándulas Salivales/metabolismo , Saliva/química , Glándula Parótida/metabolismo , Glándula Submandibular/metabolismo , Oxidación-Reducción
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