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1.
An. R. Acad. Nac. Farm. (Internet) ; 90(1): 139-147, Ene-Mar, 2024. ilus
Artigo em Espanhol | IBECS | ID: ibc-232339

RESUMO

Utilizando como fuente principal la documentación conservada en los Colegios Oficiales de Farmacéuticos de Madrid y Toledo, la Universidad de Santiago de Compostela, la sección de África en el Archivo General de la Administración y la prensa períodica local, en particular la impresa en Salamanca y Santa Isabel (Guinea), reconstruimos la biografía del farmacéutico Juan Vegue Martín, desde su tierra natal en la comarca salmantina de Guijuelo hasta los últimos datos conocidos, en los territorios coloniales de la Guinea Española. Una biografía que puede servir como estudio de caso para otros farmacéuticos rurales, de vida nómada, que vivieron -y sufrieron- los años de la Guerra Civil española.(AU)


Using as main source the documentation kept in the Official Colleges of Pharmacists of Madrid and Toledo, the University of Santiago de Compostela, the section of Africa in the General Archive of the Administration and the local periodical press, particularly the one printed in Salamanca and Santa Isabel (Guinea), we reconstruct the biography of the pharmacist Juan Vegue Martín, from his homeland in the Guijuelo region of Salamanca to the latest known data, in the colonial territories of Spanish Guinea. A biography that can serve as a case study for other rural pharmacists, with a nomadic life, who lived through -and suffered- the years of the Spanish Civil War.(AU)


Assuntos
Humanos , Masculino , Farmácia , Farmacêuticos , História do Século XIX , Farmacêuticos/história , História do Século XX , Espanha
2.
Life Sci Alliance ; 7(4)2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38307624

RESUMO

Severe presentations of malaria emerge as Plasmodium (P.) spp. parasites invade and lyse red blood cells (RBC), producing extracellular hemoglobin (HB), from which labile heme is released. Here, we tested whether scavenging of extracellular HB and/or labile heme, by haptoglobin (HP) and/or hemopexin (HPX), respectively, counter the pathogenesis of severe presentations of malaria. We found that circulating labile heme is an independent risk factor for cerebral and non-cerebral presentations of severe P. falciparum malaria in children. Labile heme was negatively correlated with circulating HP and HPX, which were, however, not risk factors for severe P. falciparum malaria. Genetic Hp and/or Hpx deletion in mice led to labile heme accumulation in plasma and kidneys, upon Plasmodium infection This was associated with higher incidence of mortality and acute kidney injury (AKI) in ageing but not adult Plasmodium-infected mice, and was corroborated by an inverse correlation between heme and HPX with serological markers of AKI in P. falciparum malaria. In conclusion, HP and HPX act in an age-dependent manner to prevent the pathogenesis of severe presentation of malaria in mice and presumably in humans.


Assuntos
Injúria Renal Aguda , Malária , Criança , Humanos , Camundongos , Animais , Heme , Hemoglobinas , Haptoglobinas
3.
Referência ; serVI(2): e22069, dez. 2023. tab
Artigo em Português | LILACS-Express | BDENF - Enfermagem | ID: biblio-1521460

RESUMO

Resumo Enquadramento: A flebite é uma complicação associada à utilização de cateter venoso periférico, classificada como evento adverso. Objetivos: Analisar os incidentes de flebite associada ao cateter venoso periférico e aos medicamentos administrados em doentes adultos internados e as suas consequências. Metodologia: Estudo quantitativo, retrospetivo, descritivo e transversal. Técnica de amostragem não probabilística por conveniência sendo selecionados 96 doentes adultos internados em 2019, na área da medicina de um Centro Hospitalar em Lisboa. O grau de flebite foi avaliado pela escala Visual Infusion Phlebitis Score Português Portugal (VIP PT-PT) traduzida e adaptada para Português Europeu. O dano foi categorizado de acordo com a classificação internacional sobre segurança do doente (CISD). Resultados: Dos incidentes de flebite documentados, 78% classificados com score 2 pela escala VIP PT-PT. Pela CISD, 87,5% resultaram em dano ligeiro e 12,5% em moderado. Os antibióticos foram o grupo terapêutico mais frequente. Conclusão: A flebite tem impacto na segurança do doente. Reforça-se a importância dos cuidados de enfermagem com enfoque na vigilância e deteção precoce de flebite.


Abstract Background: Phlebitis is a complication associated with peripheral intravenous catheters and an adverse event. Objective: To analyze peripheral intravenous catheter-associated phlebitis incidents associated and drug administration to adult inpatients and their consequences. Methodology: Quantitative, retrospective, descriptive, and cross-sectional study. Non-probabilistic convenience sampling technique was used, with 96 adult patients hospitalized in 2019 selected in the area of medicine at a Hospital Center in Lisbon. The type of phlebitis incident was characterized using the Visual Infusion Phlebitis scale adapted and translated to European Portuguese. Patient harm was categorized according to the International Classification for Patient Safety (ICPS). Results: Of the documented phlebitis incidents, 78% obtained a score 2 on the VIP PT-PT scale. According to the ICPS, 87.5% resulted in mild harm and 12.5% in moderate harm. Antibiotics were the most frequent therapeutic group. Conclusion: Phlebitis has an impact on patient safety. The importance of nursing care is reinforced, with a focus on surveillance and early detection of phlebitis to prevent complications.


Resumen Marco contextual: La flebitis es una complicación asociada al uso de catéteres venosos periféricos clasificada como acontecimiento adverso. Objetivos: Analizar los incidentes de flebitis asociada al empleo de catéteres venosos periféricos y a la administración de fármacos en pacientes adultos hospitalizados y sus consecuencias. Metodología: Estudio cuantitativo, retrospectivo, descriptivo y transversal. Técnica de muestreo no probabilístico por conveniencia, se seleccionaron 96 pacientes adultos ingresados en 2019 en el área médica de un centro hospitalario de Lisboa. El grado de flebitis se evaluó mediante la escala Visual Infusion Phlebitis Score Portugués Portugal (VIP PT-PT), traducida y adaptada al portugués europeo. El daño se categorizó según la Clasificación Internacional sobre Seguridad del Paciente (CISD). Resultados: De los incidentes de flebitis documentados, el 78% se clasificó con una puntuación de 2 según la escala VIP PT-PT. Por la CISD, el 87,5% resultó en daño leve y el 12,5% en moderado. Los antibióticos fueron el grupo terapéutico más frecuente. Conclusión: La flebitis repercute en la seguridad del paciente. Se refuerza la importancia de los cuidados de enfermería centrados en la vigilancia y la detección precoz de la flebitis.

4.
Referência ; serVI(2): e22087, dez. 2023. tab
Artigo em Português | LILACS-Express | BDENF - Enfermagem | ID: biblio-1529325

RESUMO

Resumo Enquadramento: As quedas em contexto hospitalar são eventos adversos frequentes, sendo os medicamentos um importante fator contribuinte. Objetivo: Analisar notificações de queda de doentes internados e caracterizar o risco de queda com foco na terapia farmacológica, através da aplicação da Medication Fall Risk Score. Metodologia: Estudo observacional, descritivo e retrospetivo realizado num centro hospitalar português. Aplicada a Medication Fall Risk Score, numa amostra de 183 notificações de queda ocorridas no primeiro trimestre de 2021. Resultados: A Medication Fall Risk Score identificou 60,6% dos doentes com "sim" para o alto risco de queda. Relativamente à avaliação de risco de queda registada nas notificações com recurso a outra escala, identificou-se que 65,8% dos doentes foram classificados como "baixo risco" ou "sem risco". Desses, 53,9% foram classificados com "sim" para o alto risco através da Medication Fall Risk Score. Conclusão: A Medication Fall Risk Score poderá contribuir para melhorar a deteção de doentes com "alto risco" de queda, permitindo uma gestão mais segura dos medicamentos para a prevenção das quedas.


Abstract Background: Falls in hospital settings are frequent adverse events, with medications contributing significantly. Objective: To analyze inpatient fall notifications and characterize fall risk with a focus on drug therapy by applying the Medication Fall Risk Score. Methodology: An observational, descriptive, and retrospective study was conducted in a Portuguese hospital center. The Medication Fall Risk Score was applied to a sample of 183 patient fall notifications in the first quarter of 2021. Results: The Medication Fall Risk Score identified 60.6% of patients with "yes" for high fall risk. Regarding fall risk assessment recorded in the notifications using another scale, 65.8% of patients were classified as "low risk" or "no risk." Of these, 53.9% were classified as "yes" for high risk using the Medication Fall Risk Score. Conclusion: The Medication Fall Risk Score may help to improve the detection of patients at "high risk" of falling, allowing safer medication practices for fall prevention.


Resumen Marco contextual: Las caídas en los hospitales son eventos adversos frecuentes y la medicación es un factor importante. Objetivo: Analizar las notificaciones de caída de pacientes hospitalizados y caracterizar el riesgo de caída centrándose en el tratamiento farmacológico, mediante la aplicación de la Medication Fall Risk Score. Metodología: Estudio observacional, descriptivo y retrospectivo realizado en un centro hospitalario portugués. Aplicada la Medication Fall Risk Score en una muestra de 183 notificaciones de caída ocurridas en el primer trimestre de 2021. Resultados: La Medication Fall Risk Score identificó al 60,6% de los pacientes con un "sí" para riesgo de caída elevado. En cuanto a la evaluación del riesgo de caída registrada en las notificaciones mediante otra escala, el 65,8% de los pacientes fueron clasificados como de "riesgo bajo" o "sin riesgo". De ellos, el 53,9% se clasificaron con un "sí" para riesgo elevado a través de la Medication Fall Risk Score. Conclusión: La Medication Fall Risk Score podría ayudar a mejorar la detección de pacientes con "riesgo elevado" de caída, lo que permitiría una gestión más segura de los medicamentos para prevenirla.

5.
STAR Protoc ; 4(3): 102491, 2023 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-37581982

RESUMO

Bulk RNA sequencing of Plasmodium spp., the causative parasite of malaria, fails to discriminate developmental-stage-specific gene regulation. Here, we provide a protocol that uses single-cell RNA sequencing of FACS-sorted Plasmodium-chabaudi-chabaudi-AS-infected red blood cells (iRBCs) to characterize developmental-stage-specific modulation of gene expression during malaria blood stage. We describe steps for infecting mice, monitoring disease progression, preparing iRBCs, and single-cell sequencing iRBCs. We then detail procedures for analyzing scRNA-seq data. For complete details on the use and execution of this protocol, please refer to Ramos et al.1.


Assuntos
Malária , Plasmodium , Animais , Camundongos , Roedores , Plasmodium/genética , Malária/diagnóstico , Malária/parasitologia , Eritrócitos , Análise de Sequência de RNA
6.
ACS Sustain Chem Eng ; 11(29): 10864-10873, 2023 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-37502771

RESUMO

Polyurethane foams (PUFs) are widely used commodity materials, but most of them end up in landfills at the end of their life, which is not in line with the circular economy approach. Here, we introduce microwave-assisted aminolysis with amine reagents that contain primary and tertiary amino groups in the structure. These reagents enable complete degradation of the urethane groups in the structure of the flexible PUFs with a much lower amount of degradation reagent than is typically required for solvolysis reactions. The purified, recovered polyols are close equivalents to the corresponding virgin polyols in terms of their structural and molar mass characteristics. Therefore, they can be used for the production of high-quality PUFs without having to adapt the synthesis process. The flexible PUFs made from recovered polyols have comparable mechanical properties to those made from virgin polyols.

7.
Nutr. hosp ; 40(2): 257-265, mar.-abr. 2023. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-219320

RESUMO

Introducción: la intervención nutricia se ha convertido en un punto crítico para lograr la disminución de la morbimortalidad perioperatoria en el paciente oncológico. Existen distintos factores que jugarán un papel fundamental en la evolución y el pronóstico de esta patología, siendo el estado de nutrición y la dieta una piedra angular en estos aspectos. Objetivos: evaluar el efecto perioperatorio de la proteína aislada de suero de leche (WPI) y el caseinato de calcio (CaCNT) en pacientes oncológicos sometidos a cirugía electiva. Métodos: ensayo clínico controlado aleatorizado con tres grupos: grupo control (n = 15), que consistió en manejo convencional por parte de los servicios de cirugía oncológica, y dos grupos de intervención, uno con suplementación de caseinato de calcio (n = 15) y otro con suplementación con proteína aislada de suero de leche (n = 15) durante seis semanas de forma perioperatoria. Se evaluaron en tiempos preoperatorio y postoperatorio la fuerza de prensión de mano, la caminata de seis minutos y la composición corporal. Resultados: aquellos que fueron suplementados con WPI mantuvieron la fuerza de prensión y mostraron menor cantidad de agua extracelular (p < 0,02); se mostró un incremento en la masa visceral (p < 0,02). Finalmente, se encontró correlación con variables asociadas a la composición corporal y variables de evolución del paciente en comparación con el grupo control. Conclusiones: la suplementación nutricional requiere ser abordada desde el punto de vista funcional y metabólico para identificar factores que impacten favorablemente, así como la distinción entre carcinoma y el tipo de suplementación a implementar. (AU)


Introduction: the nutritional intervention has become a critical point to achieve the reduction of perioperative morbidity and mortality in cancer patients. There are different factors that will play a fundamental role in the evolution and prognosis of this pathology, being the state of nutrition and diet a cornerstone in these aspects. Objective: to evaluate the perioperative effect of whey protein isolate (WPI) and calcium caseinate (CaCNT) in cancer patients undergoing elective surgery. Methods: randomized controlled clinical trial with three groups: the control group (n = 15), consisting in conventional management by the oncology surgery services, and two intervention groups, one with calcium caseinate supplementation (n = 15) and another one with whey protein isolate supplementation (n = 15) for six weeks perioperatively. Handgrip strength, six-minute walk, and body composition were assessed pre and postoperatively. Results: those who were supplemented with WPI maintained their handgrip strength and showed less extracellular water (p < 0.02); also an increase in visceral mass was shown (p < 0.02). Finally, a correlation was found with variables associated with body composition and patient evolution when compared to the control group. Conclusions: nutritional supplementation needs to be approached from the functional and metabolic point of view to identify factors that have a favorable impact, as well as the distinction between carcinoma and the type of supplementation to be implemented. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Proteínas do Soro do Leite , Suplementos Nutricionais , Neoplasias/cirurgia , Serviço Hospitalar de Oncologia , Estado Nutricional
8.
Nutr Hosp ; 40(2): 257-265, 2023 Apr 20.
Artigo em Espanhol | MEDLINE | ID: mdl-36880717

RESUMO

Introduction: Introduction: the nutritional intervention has become a critical point to achieve the reduction of perioperative morbidity and mortality in cancer patients. There are different factors that will play a fundamental role in the evolution and prognosis of this pathology, being the state of nutrition and diet a cornerstone in these aspects. Objective: to evaluate the perioperative effect of whey protein isolate (WPI) and calcium caseinate (CaCNT) in cancer patients undergoing elective surgery. Methods: randomized controlled clinical trial with three groups: the control group (n = 15), consisting in conventional management by the oncology surgery services, and two intervention groups, one with calcium caseinate supplementation (n = 15) and another one with whey protein isolate supplementation (n = 15) for six weeks perioperatively. Handgrip strength, six-minute walk, and body composition were assessed pre and postoperatively. Results: those who were supplemented with WPI maintained their handgrip strength and showed less extracellular water (p < 0.02); also an increase in visceral mass was shown (p < 0.02). Finally, a correlation was found with variables associated with body composition and patient evolution when compared to the control group. Conclusions: nutritional supplementation needs to be approached from the functional and metabolic point of view to identify factors that have a favorable impact, as well as the distinction between carcinoma and the type of supplementation to be implemented.


Introducción: Introducción: la intervención nutricia se ha convertido en un punto crítico para lograr la disminución de la morbimortalidad perioperatoria en el paciente oncológico. Existen distintos factores que jugarán un papel fundamental en la evolución y el pronóstico de esta patología, siendo el estado de nutrición y la dieta una piedra angular en estos aspectos. Objetivos: evaluar el efecto perioperatorio de la proteína aislada de suero de leche (WPI) y el caseinato de calcio (CaCNT) en pacientes oncológicos sometidos a cirugía electiva. Métodos: ensayo clínico controlado aleatorizado con tres grupos: grupo control (n = 15), que consistió en manejo convencional por parte de los servicios de cirugía oncológica, y dos grupos de intervención, uno con suplementación de caseinato de calcio (n = 15) y otro con suplementación con proteína aislada de suero de leche (n = 15) durante seis semanas de forma perioperatoria. Se evaluaron en tiempos preoperatorio y postoperatorio la fuerza de prensión de mano, la caminata de seis minutos y la composición corporal. Resultados: aquellos que fueron suplementados con WPI mantuvieron la fuerza de prensión y mostraron menor cantidad de agua extracelular (p < 0,02); se mostró un incremento en la masa visceral (p < 0,02). Finalmente, se encontró correlación con variables asociadas a la composición corporal y variables de evolución del paciente en comparación con el grupo control. Conclusiones: la suplementación nutricional requiere ser abordada desde el punto de vista funcional y metabólico para identificar factores que impacten favorablemente, así como la distinción entre carcinoma y el tipo de suplementación a implementar.


Assuntos
Força da Mão , Neoplasias , Humanos , Proteínas do Soro do Leite/uso terapêutico , Suplementos Nutricionais , Estado Nutricional , Neoplasias/cirurgia
9.
Cell Rep ; 42(2): 112057, 2023 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-36735532

RESUMO

Iron recycling prevents the development of anemia under homeostatic conditions. Whether iron recycling was co-opted as a defense strategy to prevent the development of anemia in response to infection is unclear. We find that in severe Plasmodium falciparum malaria, the onset of life-threatening anemia is associated with acute kidney injury (AKI), irrespective of parasite load. Using a well-established experimental rodent model of malaria anemia, we identify a transcriptional response that endows renal proximal tubule epithelial cells (RPTECs) with the capacity to store and recycle iron during P. chabaudi chabaudi (Pcc) infection. This response encompasses the induction of ferroportin 1/SLC40A1, which exports iron from RPTECs and counteracts AKI while supporting compensatory erythropoiesis and preventing the onset of life-threatening malarial anemia. Iron recycling by myeloid cells is dispensable to this protective response, suggesting that RPTECs provide an iron-recycling salvage pathway that prevents the pathogenesis of life-threatening malarial anemia.


Assuntos
Injúria Renal Aguda , Anemia , Malária Falciparum , Malária , Humanos , Anemia/etiologia , Malária/complicações , Malária/parasitologia , Eritropoese/fisiologia , Malária Falciparum/complicações , Ferro
10.
Nat Commun ; 13(1): 7671, 2022 12 12.
Artigo em Inglês | MEDLINE | ID: mdl-36509746

RESUMO

Late prenatal development of the human neocortex encompasses a critical period of gliogenesis and cortical expansion. However, systematic single-cell analyses to resolve cellular diversity and gliogenic lineages of the third trimester are lacking. Here, we present a comprehensive single-nucleus RNA sequencing atlas of over 200,000 nuclei derived from the proliferative germinal matrix and laminating cortical plate of 15 prenatal, non-pathological postmortem samples from 17 to 41 gestational weeks, and 3 adult controls. This dataset captures prenatal gliogenesis with high temporal resolution and is provided as a resource for further interrogation. Our computational analysis resolves greater complexity of glial progenitors, including transient glial intermediate progenitor cell (gIPC) and nascent astrocyte populations in the third trimester of human gestation. We use lineage trajectory and RNA velocity inference to further characterize specific gIPC subpopulations preceding both oligodendrocyte (gIPC-O) and astrocyte (gIPC-A) lineage differentiation. We infer unique transcriptional drivers and biological pathways associated with each developmental state, validate gIPC-A and gIPC-O presence within the human germinal matrix and cortical plate in situ, and demonstrate gIPC states being recapitulated across adult and pediatric glioblastoma tumors.


Assuntos
Neuroglia , Oligodendroglia , Criança , Humanos , Neuroglia/metabolismo , Células-Tronco/metabolismo , Diferenciação Celular/genética , Neurogênese/genética
11.
Med. crít. (Col. Mex. Med. Crít.) ; 36(4): 223-227, Jul.-Aug. 2022. tab
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1430752

RESUMO

Resumen: Objetivo: Determinar la relación de la presión de distensión pulmonar (DP) con la mortalidad en pacientes bajo ventilación mecánica (VM) con COVID-19. Material y métodos: Estudio de cohorte en pacientes con COVID-19 y VM de marzo a septiembre de 2020, se compararon dos grupos, expuesto (pacientes con DP superior a 13 cmH2O) y no expuestos (pacientes con DP igual o menor a 13 cmH2O), se analizó la edad, sexo, hipertensión arterial (HTA), diabetes, obesidad, enfermedad renal crónica (ERC), enfermedad pulmonar obstructiva crónica (EPOC), inmunosupresión y enfermedad cardiovascular. Resultados: Con un total de 90 pacientes, la DP alta mostró ser un factor de riesgo para defunción (p = 0.000) al igual que la HTA (p = 0.013) y la inmunosupresión (p = 0.040). En pacientes hipertensos se encontró una DP de 10 cmH2O como meta de protección pulmonar, la cual se relaciona con la probabilidad de morir en 49.6% incrementando a 89.6% cuando existe una DP de 13 cmH2O. Conclusiones: Ochenta por ciento de la población tiene alto riesgo de mortalidad cuando existe DP alta, e incremento de mortalidad cuando se asocia con HTA e inmunosuprimidos. El resultado más importante fue la relación de mortalidad de la DP en pacientes hipertensos.


Abstract: Objective: To determine the relationship of driving pressure (DP) with mortality in patients under mechanical ventilation (MV) with COVID-19. Material and methods: Cohort study in patients with COVID-19 and MV from March to September 2020, two groups were compared, exposed (patients with DP greater than 13 cmH2O) and unexposed (patients with DP equal to or less than 13 cmH2O), age was analyzed, sex, hypertension (HT), diabetes, obesity, chronic kidney disease (CKD), chronic obstructive pulmonary disease (COPD), immunosuppression, and cardiovascular disease. Results: With a total of 90 patients, high DP was shown to be a risk factor for death (p = 0.000) as well as hypertension (p = 0.013) and immunosuppression (p = 0.040). In hypertensive patients, a DP of 10 cmH2O was found as a lung protection goal, which is related to the probability of dying in 49.6%, increasing to 89.6% when there is a DP of 13 cmH2O. Conclusions: 80% of the population has a high risk of mortality when there is high DP, and an increase in mortality when associated with hypertension and immunosuppression. The most important result was the mortality ratio of DP in hypertensive patients.


Resumo: Objetivo: Determinar a relação da pressão de distensão pulmonar (DP) com a mortalidade em pacientes com COVID-19 com ventilação mecânica (VM). Material e métodos: Estudo de coorte em pacientes com COVID-19 e VM de março a setembro de 2020, foram comparados dois grupos, expostos (pacientes com DP maior que 13 cmH2O) e não expostos (pacientes com DP igual ou menor que 13 cmH2O), analisou-se a idade, sexo, pressão arterial alta (HAS), diabetes, obesidade, DRC, DPOC, imunossupressão e doenças cardiovasculares. Resultados: Com um total de 90 pacientes, a DP elevada mostrou-se fator de risco para óbito (p = 0.000), assim como hipertensão (p = 0.013) e imunossupressão (p = 0.040). Em pacientes hipertensos, encontrou-se uma DP de 10 cmH2O como meta de proteção pulmonar, que está relacionada à probabilidade de morrer em 49.6%, aumentando para 89.6% quando há DP de 13 cmH2O. Conclusões: 80% da população tem alto risco de mortalidade quando há DP elevada, e mortalidade aumentada quando associada à hipertensão e imunossupressão. O resultado mais importante foi a razão de mortalidade da DP em pacientes hipertensos.

12.
Cell Metab ; 34(8): 1183-1200.e12, 2022 08 02.
Artigo em Inglês | MEDLINE | ID: mdl-35841892

RESUMO

Hypoglycemia is a clinical hallmark of severe malaria, the often-lethal outcome of Plasmodium falciparum infection. Here, we report that malaria-associated hypoglycemia emerges from a non-canonical resistance mechanism, whereby the infected host reduces glycemia to starve Plasmodium. This hypometabolic response is elicited by labile heme, a byproduct of hemolysis that induces illness-induced anorexia and represses hepatic glucose production. While transient repression of hepatic glucose production prevents unfettered immune-mediated inflammation, organ damage, and anemia, when sustained over time it leads to hypoglycemia, compromising host energy expenditure and adaptive thermoregulation. The latter arrests the development of asexual stages of Plasmodium via a mechanism associated with parasite mitochondrial dysfunction. In response, Plasmodium activates a transcriptional program associated with the reduction of virulence and sexual differentiation toward the generation of transmissible gametocytes. In conclusion, malaria-associated hypoglycemia represents a trade-off of a hypometabolic-based defense strategy that balances parasite virulence versus transmission.


Assuntos
Hipoglicemia , Malária Falciparum , Malária , Glucose , Humanos , Malária Falciparum/parasitologia , Plasmodium falciparum
13.
Insects ; 12(6)2021 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-34200391

RESUMO

Dicyphine mirids are important biological control agents (BCAs) in horticultural crops. Dicyphus cerastii Wagner can be found in protected tomato crops in Portugal, and has been observed feeding on several tomato pests. However, the predation capacity of this species is poorly studied. In order to investigate the predation capacity of D. cerastii, and how it is affected by prey size and mobility, we evaluated the functional response (FR) and predation rate of female predators on different densities of four prey species: Myzus persicae 1st instar nymphs (large mobile prey), Bemisia tabaci 4th instar nymphs, Ephestia kuehniella eggs (large immobile prey) and Tuta absoluta eggs (small immobile prey). Experiments were performed on tomato leaflets in Petri dish arenas for 24 h. Dicyphus cerastii exhibited type II FR for all prey tested. The predator effectively preyed upon all prey, consuming an average of 88.8 B. tabaci nymphs, 134.4 E. kuehniella eggs, 37.3 M. persicae nymphs and 172.3 T. absoluta eggs. Differences in the FR parameters, attack rate and handling time, suggested that prey size and mobility affected predation capacity. Considering the very high predation rates found for all prey species, D. cerastii proved to be an interesting candidate BCA for tomato crops.

14.
Cad. Ibero Am. Direito Sanit. (Impr.) ; 10(1): 129-148, jan.-mar.2021.
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1151021

RESUMO

Objetivo: enumerar medidas governativas e de saúde pública implementadas em Portugal decorrentes da pandemia pelo vírus SARS-CoV-2 e descrever a atuação do Gabinete de Segurança do Paciente do Centro Hospitalar Universitário de Lisboa Central (CHULC), referência nacional na resposta à situação de emergência de saúde pública. Métodos: utilizou-se como método a análise normativa, documental, além de relato de caso por pesquisa-ação. Resultados: em Portugal, documentaram-se os primeiros casos de infeção por SARS-CoV-2 a 2 de março de 2020. Os processos assistenciais são geridos pelo Ministério da Saúde e Direção Geral da Saúde, abrangendo o Sistema Nacional de Saúde (universal) e o sector privado. O Gabinete de Segurança do Doente do CHULC, participou na redefinição dos processos, criação de vias alternativas de informação entre as várias estruturas, implementação de inovações no uso de tecnologias e vigilância clínica, gestão dos equipamentos de proteção, motivação e suporte emocional dos profissionais e na consolidação das principais metas de segurança do doente (ex. identificação do doente, medicação e cirurgia segura). A aprendizagem feita com os erros contribui para a melhoria contínua dos processos. Conclusão: em Portugal e no mundo a pandemia por COVID-19 não terminou. Compreendemos que é tempo de refletir e voltar aos princípios básicos da segurança, como a higiene das mãos, a etiqueta respiratória e o controlo ambiental. Na gestão do risco e segurança do paciente em situação de crise, é necessário, mais do que nunca, inovar e aprender com os erros.


Objective: to enumerate governmental and public health measures implemented in Portugal resulting from the SARS-CoV-2 virus pandemic and describe the work of the Patient Safety Office of the Centro Hospitalar Universitário de Lisboa Central (CHULC), a national reference in the response to the situation of public health emergency. Methods: normative, documentary analysis was used as a method, in addition to case reports by action research. Results: in Portugal, the first cases of SARS-CoV-2 infection were documented on March 2, 2020. Assistance processes are managed by the Ministry of Health and the General Directorate of Health, covering the National Health System (universal) and the private sector. The CHULC Patient Safety Office, participated in the redefinition of processes, creation of alternative information routes between the various structures, implementation of innovations in the use of technologies and clinical surveillance, management of protective equipment, motivation and emotional support from professionals and consolidating the main patient safety goals (eg patient identification, medication and safe surgery). Learning from mistakes contributes to the continuous improvement of processes. Conclusion: In Portugal and in the world, the COVID-19 pandemic has not ended. We understand that it is time to reflect and return to the basic principles of safety, such as hand hygiene, respiratory etiquette and environmental control. In the management of risk and safety of patients in crisis situations, it is necessary, more than ever, to innovate and learn from mistakes.


Objetivo: enumerar las medidas gubernamentales y de salud pública implementadas en Portugal como resultado de la pandemia del virus SARS-CoV-2 y describir el trabajo de la Oficina de Seguridad del Paciente del Centro Hospitalar Universitário de Lisboa Central (CHULC), una referencia nacional en la respuesta a la situación de emergencia de salud pública. Métodos: se utilizó como método el análisis documental, normativo, además de los reportes de casos por investigación-acción. Resultados: en Portugal se documentaron los primeros casos de infección por SARS-CoV-2 el 2 de marzo de 2020. Los procesos de atención son gestionados por el Ministerio de Salud y la Dirección General de Salud, abarcando el Sistema Nacional de Salud (universal) y el privado. sector. La Oficina de Seguridad del Paciente del CHULC, participó en la redefinición de procesos, creación de rutas alternativas de información entre las distintas estructuras, implementación de innovaciones en el uso de tecnologías y vigilancia clínica, manejo de equipos de protección, motivación y apoyo emocional de los profesionales y consolidando las principales objetivos de seguridad del paciente (por ejemplo, identificación del paciente, medicación y cirugía segura). Aprender de los errores contribuye a la mejora continua de los procesos. Conclusión: En Portugal y en el mundo, la pandemia de COVID-19 no ha terminado. Entendemos que es hora de reflexionar y volver a los principios básicos de seguridad, como la higiene de manos, la etiqueta respiratoria y el control ambiental. En la gestión del riesgo y la seguridad de los pacientes en situaciones de crisis, es necesario, más que nunca, innovar y aprender de los errores.

15.
Acta Med Port ; 33(10): 675-679, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-33135622

RESUMO

INTRODUCTION: Lower limb amputees present a high risk of falling. This study aims to characterise fall history in unilateral lower limb amputees that are autonomous in the community, identifying differences between transfemoral and transtibial amputees and assessing fear of falling between fallers and non-fallers. MATERIAL AND METHODS: Descriptive, cross-sectional study of consecutive community-dwelling unilateral lower limb adult amputees of any aetiology, attending outpatient consultation in a Portuguese Physical and Rehabilitation Medicine central and university hospital department. INCLUSION CRITERIA: a prior 12 week individualised rehabilitation program for prosthesis training; regular prosthesis use for more than one year with autonomous gait; and a Functional Independence Measure® score equal to or greater than 100. Injury severity was classified according to the National Database of Nursing Quality Indicators® injury falls measure. In order to assess walking performance over short distances and fear of falling we used the 10-meter walk test and the Falls Efficacy Scale, respectively. RESULTS: In a sample of 52 lower limb amputees, mainly men (80.8%) and of traumatic aetiology (63.5%), with a mean age of 57.21 ± 11.55 years, 36.5% reported at least one fall in the previous 12 months, all classified as minor injuries. Transfemoral amputees (n = 23) presented a higher number of falls (2.22 ± 3.23, p = 0.025) and lower gait velocity (0.77 ± 0.26 m per second, p < 0.001). Regarding fear of falling, we found no significant differences between fallers and non-fallers. DISCUSSION: The prevalence of falls was low and of minor severity. Transfemoral amputees fell more often and were slower. There were no reported differences in fear of falling between groups. CONCLUSION: This paper contributes information about Portuguese lower limb amputees, whose studies are scarce and are rarely dedicated to falling.


Introdução: Amputados do membro inferior apresentam um elevado risco de queda. Neste estudo pretende-se caracterizar a história de queda em amputados unilaterais de membros inferiores, autónomos da comunidade, identificar diferenças entre transfemorais e transtibiais e avaliar diferenças no medo de cair entre os que caíram e os que não caíram. Material e Métodos: Estudo descritivo, transversal, de amputados unilaterais de membros inferiores, adultos, residentes na comunidade, de qualquer etiologia, consecutivamente recrutados da consulta do serviço de Medicina Física e de Reabilitação de um hospital central e universitário de Portugal. Critérios de inclusão: reabilitação de 12 semanas para treino protético; uso regular de prótese superior a um ano, marcha autónoma e Medida de Independência Funcional® igual ou superior a 100. A gravidade de queda foi classificada recorrendo à National Database of Nursing Quality Indicators® injury falls measure e a capacidade de andar e medo de cair com, respetivamente, o 10-meter walk test e a Falls Efficacy Scale. Resultados: Foi analisado um total de 52 amputados, maioritariamente homens (80,8%) e de etiologia traumática (63,5%) e com idade média 57,21 ± 11,55 anos, dos quais 36,5% relataram pelo menos uma queda, todas de baixa gravidade. Os transfemorais (n = 23) apresentaram mais quedas (2,22 ± 3,23, p = 0,025) e menor velocidade de marcha (0,77 ± 0,26 m por segundo, p < 0,001). Relativamente ao medo de cair, não encontrámos diferenças significativas entre doentes amputados com e sem história de quedas. Discussão: A prevalência e gravidade de queda foi baixa. Amputados transfemorais apresentaram mais quedas e menor velocidade de marcha. Não existiram diferenças no medo de cair em função da história de queda. Conclusão: Este trabalho acrescenta informação acerca dos amputados do membro inferior portugueses, cujos estudos são escassos e raramente dedicados a queda.


Assuntos
Acidentes por Quedas/estatística & dados numéricos , Amputação Cirúrgica/reabilitação , Amputados/reabilitação , Membros Artificiais , Medo/psicologia , Adulto , Idoso , Amputação Cirúrgica/psicologia , Amputados/psicologia , Estudos Transversais , Feminino , Humanos , Extremidade Inferior , Masculino , Pessoa de Meia-Idade , Portugal
16.
Dev Cell ; 52(4): 477-491.e8, 2020 02 24.
Artigo em Inglês | MEDLINE | ID: mdl-32097653

RESUMO

Most adult neurons and glia originate from radial glial progenitors (RGs), a type of stem cell typically extending from the apical to the basal side of the developing cortex. Precise regulation of the choice between RG self-renewal and differentiation is critical for normal development, but the mechanisms underlying this transition remain elusive. We show that the non-canonical tubulin Tuba8, transiently expressed in cortical progenitors, drives differentiation of RGs into apical intermediate progenitors, a more restricted progenitor type lacking attachment to the basal lamina. This effect depends on the unique C-terminal sequence of Tuba8 that antagonizes tubulin tyrosination and Δ2 cleavage, two post-translational modifications (PTMs) essential for RG fiber maintenance and the switch between direct and indirect neurogenesis and ultimately distinct neuronal lineage outcomes. Our work uncovers an instructive role of a developmentally regulated tubulin isotype in progenitor differentiation and provides new insights into biological functions of the cellular tubulin PTM "code."


Assuntos
Diferenciação Celular , Córtex Cerebral/citologia , Fator 10 de Crescimento de Fibroblastos/fisiologia , Células-Tronco Neurais/citologia , Neuroglia/citologia , Neurônios/citologia , Tubulina (Proteína)/fisiologia , Animais , Linhagem da Célula , Células Cultivadas , Córtex Cerebral/metabolismo , Feminino , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Células-Tronco Neurais/metabolismo , Neurogênese , Neuroglia/metabolismo , Neurônios/metabolismo , Tirosina/metabolismo
17.
An. pediatr. (2003. Ed. impr.) ; 91(1): 42-46, jul. 2019. tab
Artigo em Espanhol | IBECS | ID: ibc-186696

RESUMO

Introducción: La sacroileítis piógena (SIP) es una entidad infrecuente que representa del 1 al 2% del total de las infecciones articulares en la edad pediátrica. Su diagnóstico a menudo se complica y retrasa debido a la inespecificidad de sus síntomas, signos y exploración física. Además, la identificación microbiológica puede resultar difícil debido a la alta proporción de hemocultivos negativos y los riesgos implicados en la aspiración de líquido articular en esta localización. Pacientes y métodos: Revisión retrospectiva de las historias clínicas de todos los pacientes menores de 18 años ingresados en un hospital infantil terciario con SIP en el período 2008-2016. Resultados: Se identificaron 6 casos de SIP en niños. Los hemocultivos fueron negativos, y la identificación del agente etiológico requirió aspiración de líquido sinovial en un paciente con infección por Aggregatibacter aphrophilus y pruebas específicas para la detección de agentes menos frecuentes en los pacientes restantes: Kingella kingae (n = 2), Brucella melitensis (n = 1) y Bartonella henselae (n = 1). Los pacientes recibieron regímenes de antibioterapia específica, y todos presentaron una evolución favorable y libre de secuelas durante el seguimiento. Conclusiones: A pesar del reducido tamaño muestral, nuestro estudio puso de relieve la baja efectividad del hemocultivo en el diagnóstico de la SIP pediátrica. También evidenció la necesidad de mantener un elevado índice de sospecha de los agentes atípicos y de emplear precozmente métodos diagnósticos apropiados, como las pruebas de imagen y la reacción en cadena de la polimerasa (PCR) en muestras de sangre, así como la prescripción de antibioterapia efectiva


Introduction: Pyogenic sacroiliitis (PSI) is a rare condition that amounts to 1% to 2% of all joint infections in the paediatric age group. Its diagnosis is often difficult and delayed due to its nonspecific signs, symptoms and physical findings. Also, the identification of the causative microorganism is frequently challenging due to a high proportion of negative blood cultures and the risks involved in joint aspiration in this site. Patients and methods: We performed a retrospective review of the health records of all patients aged less than 18 years admitted to a tertiary children's hospital due to PSI between 2008 and 2016. Results: We identified 6 cases of paediatric PSI. The blood cultures were negative, and the identification of the causative agent required joint fluid aspiration in one patient with infection by Aggregatibacter aphrophilus, and specific screening tests for less frequent agents in the other patients: Kingella kingae (n = 2), Brucella melitensis (n = 1) and Bartonella henselae (n = 1). The patients were treated with specific antimicrobial regimens, and all had favourable clinical outcomes and were free from sequelae during the follow-up. Conclusions: Despite the small sample size, our study evinced the low effectiveness of blood cultures for diagnosis of paediatric PSI. It also highlights the need for a high level of suspicion for atypical agents and the early use of adequate diagnostic methods, including imaging and serological testing or polymerase chain-reaction (PCR) analysis of blood samples, as well as prescription of effective antimicrobial therapy


Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Criança , Adolescente , Antibacterianos/administração & dosagem , Bactérias/isolamento & purificação , Sacroileíte/diagnóstico , Seguimentos , Hospitais Pediátricos , Estudos Retrospectivos , Sacroileíte/tratamento farmacológico , Sacroileíte/microbiologia , Resultado do Tratamento
18.
An Pediatr (Engl Ed) ; 91(1): 42-46, 2019 Jul.
Artigo em Espanhol | MEDLINE | ID: mdl-31130517

RESUMO

INTRODUCTION: Pyogenic sacroiliitis (PSI) is a rare condition that amounts to 1% to 2% of all joint infections in the paediatric age group. Its diagnosis is often difficult and delayed due to its nonspecific signs, symptoms and physical findings. Also, the identification of the causative microorganism is frequently challenging due to a high proportion of negative blood cultures and the risks involved in joint aspiration in this site. PATIENTS AND METHODS: We performed a retrospective review of the health records of all patients aged less than 18 years admitted to a tertiary children's hospital due to PSI between 2008 and 2016. RESULTS: We identified 6 cases of paediatric PSI. The blood cultures were negative, and the identification of the causative agent required joint fluid aspiration in one patient with infection by Aggregatibacter aphrophilus, and specific screening tests for less frequent agents in the other patients: Kingella kingae (n=2), Brucella melitensis (n=1) and Bartonella henselae (n=1). The patients were treated with specific antimicrobial regimens, and all had favourable clinical outcomes and were free from sequelae during the follow-up. CONCLUSIONS: Despite the small sample size, our study evinced the low effectiveness of blood cultures for diagnosis of paediatric PSI. It also highlights the need for a high level of suspicion for atypical agents and the early use of adequate diagnostic methods, including imaging and serological testing or polymerase chain-reaction (PCR) analysis of blood samples, as well as prescription of effective antimicrobial therapy.


Assuntos
Antibacterianos/administração & dosagem , Bactérias/isolamento & purificação , Sacroileíte/diagnóstico , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Hospitais Pediátricos , Humanos , Lactente , Masculino , Estudos Retrospectivos , Sacroileíte/tratamento farmacológico , Sacroileíte/microbiologia , Resultado do Tratamento
19.
Bioorg Chem ; 88: 102966, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31075744

RESUMO

Nimesulide is a nonsteroidal anti-inflammatory drug possessing analgesic and antipyretic properties. This drug is considered a selective cyclooxygenase-2 (COX-2) inhibitor and, more recently, has been associated to antitumor activity. Thus, numerous works have been developed to modify the nimesulide skeleton aiming to develop new and more potent and selective COX-2 inhibitors as well as potential anticancer agents. This review intends to provide an overview on analogues of nimesulide, including the general synthetic approaches used for their preparation and structural diversification and their main anti-inflammatory and/or antitumor properties.


Assuntos
Anti-Inflamatórios não Esteroides/farmacologia , Antineoplásicos/farmacologia , Inibidores de Ciclo-Oxigenase 2/farmacologia , Ciclo-Oxigenase 2/metabolismo , Sulfonamidas/farmacologia , Animais , Anti-Inflamatórios não Esteroides/síntese química , Anti-Inflamatórios não Esteroides/química , Antineoplásicos/síntese química , Antineoplásicos/química , Proliferação de Células/efeitos dos fármacos , Inibidores de Ciclo-Oxigenase 2/síntese química , Inibidores de Ciclo-Oxigenase 2/química , Humanos , Estrutura Molecular , Sulfonamidas/síntese química , Sulfonamidas/química
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