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Infection by SARS-CoV-2 is associated with uncontrolled inflammatory response during COVID-19 severe disease, in which monocytes are one of the main sources of pro-inflammatory mediators leading to acute respiratory distress syndrome. Extracellular vesicles (EVs) from different cells play important roles during SARS-CoV-2 infection, but investigations describing the involvement of EVs from primary human monocyte-derived macrophages (MDM) on the regulation of this infection are not available. Here, we describe the effects of EVs released by MDM stimulated with the neuropeptides VIP and PACAP on SARS-CoV-2-infected monocytes. MDM-derived EVs were isolated by differential centrifugation of medium collected from cells cultured for 24 h in serum-reduced conditions. Based on morphological properties, we distinguished two subpopulations of MDM-EVs, namely large (LEV) and small EVs (SEV). We found that MDM-derived EVs stimulated with the neuropeptides inhibited SARS-CoV-2 RNA synthesis/replication in monocytes, protected these cells from virus-induced cytopathic effects and reduced the production of pro-inflammatory mediators. In addition, EVs derived from VIP- and PACAP-treated MDM prevented the SARS-CoV-2-induced NF-κB activation. Overall, our findings suggest that MDM-EVs are endowed with immunoregulatory properties that might contribute to the antiviral and anti-inflammatory responses in SARS-CoV-2-infected monocytes and expand our knowledge of EV effects during COVID-19 pathogenesis.
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The European Union has identified the Textile and Clothing industry as one of the essential objectives towards carbon neutrality in 2050 in line with the "European Green Deal". There are no previous research papers focused on analysing the drivers and inhibitors of the past greenhouse gas emission changes of the textile and clothing industry in Europe. This paper aims to analyse the determinants of the changes in these emissions, and the disassociation level between emissions and economic growth, throughout the 27 Member States of the European Union, from 2008 to 2018. A Logarithmic Mean Divisia Index that explains the key drivers of the changes in greenhouse gas emissions of European Union Textile and Cloth industry and a Decoupling Index have been applied. The results generally conclude that the intensity and carbonisation effects are key factors that contribute to reducing greenhouse gas emissions. The lower relative weight of the textile and clothing industry throughout the EU-27 was noteworthy, and favours lower emissions, partially counteracted by the activity effect. Also, most Member States have been decoupling the industry's emissions from economic growth. Our policy recommendation shows that if further reductions in greenhouse gas emissions are to be achieved, energy efficiency improvements and cleaner use of energy sources would offset the potential increase in emissions of this industry as a result of a relative increase in its gross value added.
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Gases de Efeito Estufa , Gases de Efeito Estufa/análise , Dióxido de Carbono/análise , Indústrias , Desenvolvimento Econômico , Carbono/análise , Vestuário , ChinaRESUMO
Background: Acute stroke care has greatly improved in recent decades. However, the increasing stroke mortality in low-to-middle income countries suggests that progress has not been reached completely by these populations. Here we present the analysis of the hospital phase of the first population-based stroke surveillance study. Methods: A daily hospital surveillance method was used to identify adult patients with acute stroke during 18 months in six hospitals. We abstracted data on demographics, vascular risk factors, neuroimaging-confirmed stroke types, and clinical data. Results: A total of 1361 adults with acute stroke were identified (mean age 69.2 years; 52% women) with transient ischemic attack (5.5%), acute ischemic stroke (68.6%), intracerebral hemorrhage (23.1%), cerebral venous thrombosis (0.2%), and undetermined stroke (2.6%). The main risk factors were hypertension (80.7%) and diabetes mellitus (47.6%). The usage rate of thrombolysis was 3.6%, in spite of the fact that 37.2% of acute ischemic stroke patients arrived in <4.5 h. The 30-day case fatality rate was 32.6%, higher in hemorrhagic than ischemic stroke. Conclusion: We identified limitations in acute stroke care in the Mexico City, including neuroimaging availability and thrombolysis usage. The door-to-door phase will help to depict the acute stroke burden in Mexico.
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INTRODUCTION: The most common cause of deep neck infections is dental infection. They are diagnosed with physical examination, imaging studies, ultrasound, or computed tomography. Surgical drainage of collections should always be performed early in a classical or percutaneous way, depending on the case. The aim of the study was to compare ultrasound-guided percutaneous drainage techniques vs. surgical drainage in deep cervical abscesses of odontogenic origin in a controlled and randomized trial. METHODS: A randomized controlled clinical trial was performed from January 2015 to December 2019. Hospital stay was evaluated as an efficiency variable. Epidemiological and secondary variable data (tumour, trismus, fever, pain), leukocytosis, cosmetic result comparing both techniques were analysed. Statistical analysis was carried out with STATA v 14.0. RESULTS: 128 patients were analysed, 51 women and 77 men. Average age 27.3 (SD = 10.13). The percutaneous group had a mean hospital stay of 3.03 (SD = 2.86) days and the surgical group 5.46 (SD = 2.96). The P-value was <.001. Cosmetic results showed differences favouring the percutaneous drainage group. None of the other variables showed statistically significant results. DISCUSSION: Surgical treatment (cervicotomy and debridement) should be undertaken early with evidence of extensive collection in deep spaces. Minimally invasive image-guided procedures are an alternative. These can be performed in well-located, unilocular collections, without compromising of the patient's airway. Percutaneous drainage and suction techniques if necessary, serially, or drainage placement may be performed. CONCLUSIONS: Ultrasound-guided and serially guided percutaneous drainage is the best therapeutic option in patients with mild and/or moderate dental infections.
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Abscesso , Drenagem , Abscesso/diagnóstico por imagem , Abscesso/cirurgia , Adulto , Feminino , Humanos , Masculino , Pescoço/cirurgia , Ultrassonografia , Ultrassonografia de Intervenção/métodosRESUMO
The nano-sized membrane enclosed extracellular vesicles (EVs) released by virtually all cell types play an essential role in intercellular communication via delivering bio-molecules, such as nucleic acids, proteins, lipids, and other molecules to recipient cells. By mediating an active and steady-state cell-to-cell communication, EVs contribute to regulating and preserving cellular homeostasis. On the other hand, EVs can also spread pathogen-derived molecules during infections, subverting the host immune responses during infections and thus worsening pathophysiological processes. In recent years, the biological functioning of EVs has become a widespread research field in basic and clinical branches of medical sciences due to their potential role in therapeutic applications for several diseases. This review aims to summarize the main recent findings regarding the implication of EVs shed by human macrophages (MΦ-EVs) and how they can modulate the host immune response to control or increase the damage caused by infectious agents. We will also present the methods used to describe MΦ-EVs, as well as the potential of these EVs as disease diagnostic tools for some human pathogens. We believe that an in-depth understanding of the host-pathogen interactions mediated by MΦ-EVs may trigger the development of innovative therapeutic strategies against infectious diseases.
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Vesículas Extracelulares/fisiologia , Interações Hospedeiro-Patógeno/fisiologia , Macrófagos/fisiologia , Comunicação Celular/fisiologia , Doenças Transmissíveis/patologia , Doenças Transmissíveis/fisiopatologia , HumanosRESUMO
INTRODUCTION: The most common cause of deep neck infections is dental infection. They are diagnosed with physical examination, imaging studies, ultrasound, or computed tomography. Surgical drainage of collections should always be performed early in a classical or percutaneous way, depending on the case. The aim of the study was to compare ultrasound-guided percutaneous drainage techniques vs. surgical drainage in deep cervical abscesses of odontogenic origin in a controlled and randomized trial. METHODS: A randomized controlled clinical trial was performed from January 2015 to December 2019. Hospital stay was evaluated as an efficiency variable. Epidemiological and secondary variable data (tumour, trismus, fever, pain), leukocytosis, cosmetic result comparing both techniques were analysed. Statistical analysis was carried out with STATA v 14.0. RESULTS: 128 patients were analysed, 51 women and 77 men. Average age 27.3 (SD = 10.13). The percutaneous group had a mean hospital stay of 3.03 (SD = 2.86) days and the surgical group 5.46 (SD = 2.96). The p-value was <.001. Cosmetic results showed differences favouring the percutaneous drainage group. None of the other variables showed statistically significant results. DISCUSSION: Surgical treatment (cervicotomy and debridement) should be undertaken early with evidence of extensive collection in deep spaces. Minimally invasive image-guided procedures are an alternative. These can be performed in well-located, unilocular collections, without compromising of the patient's airway. Percutaneous drainage and suction techniques if necessary, serially, or drainage placement may be performed. CONCLUSIONS: Ultrasound-guided and serially guided percutaneous drainage is the best therapeutic option in patients with mild and/or moderate dental infections.
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La lesión del nervio laríngeo recurrente (NLR) es una de las complicaciones más severas en las tiroidectomías. La lesión unilateral genera trastornos disfónicos que se manifiesta por voz débil y una posición paramedial de la cuerda vocal afectada, mientas que la bilateral genera trastornos respiratorios, incluyendo la asfixia. Se ha estimado que la lesión del NLR en las tiroidectomías se encuentra entre un rango de 0.3%- 18.9%. Se ha visto que con el neuromonitoreo intraoperatorio ha disminuido la incidencia de lesión, aunque debemos tener en cuenta un factor muy importante a la hora de solicitarlo y utilizarlo, el económico. La tasa de lesión permanente del nervio laríngeo recurrente debe permanecer por debajo de 1 a 2 %. Sin embargo, existen circunstancias en las cuales los nervios están expuestos a un mayor riesgo y son muchos los factores involucrados en su mecanismo de lesión. Este artículo pretende hacer una revisión del tema enfatizando en la importancia de la preservación de la funcionalidad e integridad de ambos nervios laríngeos recurrentes.
Recurrent laryngeal nerve injury (RLN) is one of the most severe complications in thyroidectomies. Unilateral injury generates dysphonic disorders manifested by weak voice and a paramedial position of the affected vocal cord, while bilateral injury generates respiratory disorders, including suffocation. RLN injury in thyroidectomies has been estimated to be in the range of 0.3% - 18.9%. It has been seen that with intraoperative neuromonitoring the incidence of injury has decreased, although we must take into account a very important factor when requesting and using it, the economic one. The rate of permanent injury to the recurrent laryngeal nerve should remain below 1% to 2%. However, there are circumstances in which the nerves are exposed to greater risk and many factors are involved in their mechanism of injury. This article aims to review the subject, emphasizing the importance of preserving the functionality and integrity of both recurrent laryngeal nerves
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Humanos , Nervo Laríngeo Recorrente/patologia , Tireoidectomia , Neoplasias da Glândula Tireoide/complicações , Monitorização IntraoperatóriaRESUMO
Resumen Introducción: Actualmente existe una tendencia a la realización de dietas no saludables, siendo particularmente vulnerable el estudiantado universitario debido a la asunción de responsabilidades en la adquisición de hábitos alimentarios. Objetivos: El propósito de esta investigación ha sido verificar el ajuste de un modelo teórico, con ecuaciones estructurales, para la explicación del número de dietas a través del porcentaje de grasa y la insatisfacción corporal. Las participantes han sido 244 universitarias mexicanas, con una edad media de 19.98 años (DE=1.24). Los instrumentos utilizados han sido el porcentaje de grasa, el número de dietas para perder peso realizadas durante los dos últimos años y el Cuestionario IMAGEN para evaluar los distintos componentes de la insatisfacción corporal. Resultados: Se ha obtenido un ajuste satisfactorio siendo significativas la mayoría de las relaciones hipotetizadas. Se destaca que solo el planteamiento de cambio y el componente comportamental tiene un efecto directo en el número de dietas. También se resalta la capacidad mediadora de los factores de insatisfacción corporal entre las variables porcentaje de grasa y número de dietas. Conclusiones: Teniendo en cuenta el efecto total (efectos directos e indirectos), el componente comportamental, seguido por los componentes malestar emocional, perceptivo y planteamiento de cambio de la insatisfacción corporal, son las variables con mayor poder explicativo sobre el número de dietas. El porcentaje de grasa no muestra efecto directo sobre el número de dietas.
Abstract Introduction: Currently there is a trend towards unhealthy diets with university students being particularly vulnerable due to the assumption of responsibility for the acquisition of eating habits. Objective: The purpose of this research has been to fit the theorical model for the explication of the number of diets through percentage of body fat and body dissatisfaction through structural equations. The participants have been 244 Mexican college women, whose average age was 19.88 years (DE=1.24). The used tools have been the percentage body fat, the number of diets to lose weight for the last two years and the IMAGE Questionnaire to measure the different components of body dissatisfaction. Results: A satisfactory fit has been obtained, with most of the hypothesized relationships being significant. It is highlighted that only the change approach and the behavioral component have a direct effect on the number of diets. The mediating capacity of the body dissatisfaction factors between the variable's percentage of body fat and number of diets is also highlighted. Conclusions: Considering the total effect (direct and indirect effects), the behavioral component, followed by the emotional discomfort, perceptual discomfort and the change approach components of body dissatisfaction are the variables with the greatest explanatory power on the number of diets. The percentage of body fat shows no direct effect on the number of diets.
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Humanos , Feminino , Adolescente , Adulto , Adulto JovemRESUMO
Extracellular vesicles (EVs) are small membrane-limited structures derived from outward budding of the plasma membrane or endosomal system that participate in cellular communication processes through the transport of bioactive molecules to recipient cells. To date, there are no published methodological works showing step-by-step the isolation, characterization and internalization of small EVs secreted by human primary macrophages derived from circulating monocytes (MDM-derived sEVs). Thus, here we aimed to provide an alternative protocol based on differential ultracentrifugation (dUC) to describe small EVs (sEVs) from these cells. Monocyte-derived macrophages were cultured in EV-free medium during 24, 48 or 72 h and, then, EVs were isolated from culture supernatants by (dUC). Macrophages secreted a large amount of sEVs in the first 24 h, with size ranging from 40-150 nm, peaking at 105 nm, as evaluated by nanoparticle tracking analysis and scanning electron microscopy. The markers Alix, CD63 and CD81 were detected by immunoblotting in EV samples, and the co-localization of CD63 and CD81 after sucrose density gradient ultracentrifugation (S-DGUC) indicated the presence of sEVs from late endosomal origin. Confocal fluorescence revealed that the sEVs were internalized by primary macrophages after three hours of co-culture. The methodology here applied aims to contribute for enhancing reproducibility between the limited number of available protocols for the isolation and characterization of MDM-derived sEVs, thus providing basic knowledge in the area of EV methods that can be useful for those investigators working with sEVs released by human primary macrophages derived from circulating monocytes.
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Comunicação Celular , Vesículas Extracelulares/metabolismo , Macrófagos/metabolismo , Buffy Coat/citologia , Diferenciação Celular , Fracionamento Celular/métodos , Centrifugação com Gradiente de Concentração/métodos , Técnicas de Cocultura , Voluntários Saudáveis , Humanos , Microscopia Intravital , Macrófagos/citologia , Macrófagos/ultraestrutura , Microscopia Confocal , Microscopia Eletrônica de Varredura , Microscopia de Fluorescência , Monócitos/fisiologia , Cultura Primária de CélulasRESUMO
In this work, the degradation of sulfamethazine (SMT), sulfadiazine (SMD), and sulfamethoxazole (SMX) by using UV light, UV/H2O2, and UV/S2O8-2 was analyzed. Direct photolysis was studied by varying the lamp power and the solution pH. DFT calculations were carried out to corroborate the efficiency of the degradation as a function of the solution pH. The variation of the apparent rate constant, kap, was determined in the indirect photolysis by employing an experimental Box-Behnken-type response surface design. The results evidenced that SMX can be efficiently degraded by applying UV radiation independent of the operating conditions. Nevertheless, the quantum yields for SMT and SMD were close to zero, indicating a low energy efficiency for their photochemical transformation. The effect of the solution pH showed that the photodegradation of sulfonamides depends both on the amount of radiation absorbed as the electronic density. Calculations based on density functional theory and supported by the quantum theory of atoms in molecules allowed to describe fragmentation patterns in the systems under study, proving the lability of S14-C2, N17-C18, and N22-O22 bonds, for SMT, SMD, and SMX, respectively. From response surface methodology, four statistically reliable equations were obtained to determine the kap value as a function of the system operating conditions. Finally, SO4â¢- radicals proved to have a higher reactivity to degrade SMT and SMD compared with HO⢠radicals regardless of the operating conditions of the system.
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Sulfametoxazol , Poluentes Químicos da Água , Teoria da Densidade Funcional , Peróxido de Hidrogênio , Cinética , Oxirredução , Fotólise , Sulfadiazina , Sulfametazina , Raios UltravioletaRESUMO
ANTECEDENTES: La afectación de los espacios cervicales como resultado de focos infecciosos cervicofaciales son eventos infrecuentes, pero potencialmente mortales. La causa más frecuente de infecciones profundas del cuello son el resultado de la infección odontogénica (IO). Estas afectan a individuos de todas las edades y pueden presentar distintos grados de severidad. Son diagnosticadas con examen físico, estudios por imágenes, Ecografía o Tomografía Computada (TC). Debe realizarse siempre el drenaje quirúrgico de forma clásica o percutánea según el caso de las colecciones en forma precoz. OBJETIVO: Analizar la eficacia clínica del tratamiento percutáneo y el drenaje quirúrgico en abscesos odontogenos MATERIALES Y MÉTODOS: Se llevo a cabo un trabajo transversal de enero de 2015 a diciembre de 2019. Se realizo revisión de historias clínicas en la sección de Cirugía de Cabeza y Cuello de nuestro Hospital de todos los pacientes que requirieron internación y fueron sometidos a drenaje quirúrgico y/o percutáneo por la presencia de absceso cervical de origen odontogeno. RESULTADOS: Fueron analizados 174 pacientes. Edad promedio 36 +/- 2 años. Solo al 37% se les realizo drenaje quirúrgico abierto. Al resto se realizó punciones percutáneas en forma seriada. El 25 % presento algún signo de compromiso de vía aérea (escala de severidad 3), y solo 2 pacientes con mediastinitis que requirieron drenaje urgente. Se realizo la exodoncia a todas los pacientes durante la internación. DISCUSION: Las infecciones cervicofaciales representan un tipo de infección potencialmente fatal si no se inicia rápidamente un tratamiento eficaz. La causa principal son IO que se manifiestan como flemones o abscesos. Las caries dentales suelen ser el origen. Debe establecerse la terapéutica antibiótica empírica en forma precoz y corticoides con bajas dosis cuando hay edema y/o trismus. A estos pacientes se les realiza tratamiento antibiótico (ampicilina sulbactam), acompañado de tratamiento quirúrgico (drenaje percutáneo o drenaje quirúrgico). La complicación más temida, es la progresión de la infección al mediastino (mediastinitis descendente) y / o Angina de Ludwig. CONCLUSIONES: No está protocolizado a quienes se les debe realizar tratamiento quirúrgico o tratamiento percutáneo. El drenaje quirúrgico abierto parece ser la primera opción frente al compromiso de vía aérea o colecciones no pasibles de drenaje percutáneo. Para el resto de los pacientes, que son la mayoría, las punciones percutáneas guidas con ecografía y en forma seriada son la mejor opción
Background: The involvement of cervical spaces as a result of cervical infectious focuses are rare but life-threatening events. The most common cause of deep neck infections is the result of dental infection (DI). These affect individuals of all ages and may have varying degrees of severity. They are diagnosed with physical examination, imaging, ultrasound or computed tomography (CT). Surgical drainage should always be performed in a classic or percutaneous method early. Objective: To analyze the clinical efficacy of percutaneous treatment and surgical drainage in dental abscess Materials and methods: Cross-sectional study was carried out from January 2015 to December 2019. Medical records were reviewed in the Head and Neck Surgery Section of our Hospital of all patients who required hospitalization and were subjected to surgical and/or percutaneous drainage due to the presence of cervical abscess of dental origin. Results: 174 patients were analyzed. Average age was 36 +/- 2 years old. Only 37% were performed open surgical drainage. The rest of them were percutaneous drainage. 25% showed any signs of airway engagement (severity scale 3). Only 2 patients had mediastinitis who required urgent drainage. Exodontics was performed on all patients during hospitalization Discussion: Cervical infections represent a potentially fatal type of infection if effective treatment is not initiated quickly. The main cause is DI that manifest as phlegmons or abscesses. Tooth decay is usually the source. Empirical antibiotic therapy should be established early and low-dose corticosteroids should be established when there is edema and/or trismus. These patients are treated with antibiotics (ampicillin sulbactam), accompanied by surgical treatment (percutaneous drainage or surgical drainage). The most feared complication is the progression of infection to the mediastinum (descending mediastinitis) and/or Ludwig's Angina. Conclusions: Surgical or percutaneous treatment are not protocolized. Open surgical drainage seems to be the first choice over airway compromise or non-passable collections of percutaneous drainage. For the rest of the patients, who are the majority, guided percutaneous drainage with ultrasound and serial form are the best option
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Humanos , Adulto , Pessoa de Meia-Idade , Abscesso Periapical/cirurgia , Tomografia , Celulite (Flegmão) , Drenagem , Procedimentos Cirúrgicos Bucais , Diagnóstico Precoce , Abscesso/terapia , Infecções/diagnósticoRESUMO
Abstract Reversible vasoconstriction syndrome is a group of clinical-radiological alterations that are characterized by severe sudden-onset headaches and reversible multifocal narrowing of the cerebral arteries. Most patients do not present with focal neurological deficit, although it can be seen in a small group, associated with cerebral edema, stroke or seizures. It is considered to be a benign process that causes disability and death in a minority of patients. The term 'reversible vasoconstriction syndrome' has been proposed to unify a variety of clinical syndromes which are similar, but have different etiologies, and have originated various eponyms. The apparently low frequency of reversible vasoconstriction syndrome and the way it presents make it a diagnostic challenge in the emergency room, and it may go unnoticed without an adequate medical history. A case probably related to the use of isometeptene is presented. (Acta Med Colomb 2019; 44. DOI: https://doi.org/10.36104/amc.2019.1213)
Resumen El síndrome de vasoconstricción reversible es un grupo de alteraciones clínico-radiológicas que se caracterizan por cefaleas intensas de inicio brusco y estrechamiento multifocal reversible de las arterias cerebrales. La mayoría de los pacientes no presentan déficit neurológico focal, aunque puede verse en un grupo reducido asociándose con edema cerebral, ataque cerebrovascular o convulsiones. Es considerado un proceso benigno, en pocos casos originan discapacidad y muerte en una minoría de pacientes. El término de síndrome de vasoconstricción reversible se ha propuesto para unificar a una variedad de síndromes clínicos similares, pero de etiología diferentes y han originados diversos epónimos. La aparente baja frecuencia del síndrome de vasoconstricción reversible y su forma de presentación hace que se convierta en un reto diagnóstico en los servicios de urgencias y puede pasar desapercibido si no se tiene una historia clínica adecuada. Presentamos un caso probablemente relacionado al uso de isometepteno. (Acta Med Colomb 2019; 44. DOI:https://doi.org/10.36104/amc.2019.1213)
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Humanos , Feminino , Pessoa de Meia-Idade , Síndrome , Vasoconstrição , Edema Encefálico , Artérias Cerebrais , Acidente Vascular Cerebral , CefaleiaRESUMO
Introducción: La monitorización con hormona tiroidea intraoperatoria (IOPTH) es utilizada en la práctica médica para predecir la cura bioquímica durante la paratiroidectomía del hiperparatiroidismo primario. Sin embargo, existen diversos criterios utilizados para predecir la normocalcémica luego de una paratiroidectomía. El propósito de este estudio es determinar cuál criterio es aquel que se corresponde con el menor riesgo de presentar un hiperparatiroidismo persistente luego de una paratiroidectomía por hiperparatiroidismo primario. Material y métodos: Se han analizado publicaciones realizadas en los últimos 10 años tomando como fuente de recopilación la base de datos de Pub-Med, trabajos publicados en Journal of the American Medical Associatiion y World Journal of Surgery. Conclusión: El criterio de IOPTH final en valores por debajo de los 65 pg/mL, y en especial, por debajo de los 40 pg/mL parece comportarse como mejor predictor de bajo riesgo de enfermedad persistente en comparación con el criterio de disminución de IOPTH por debajo del 50% del valor basal (AU)
Introduction: Monitoring with intraoperative thyroid hormone (IOPTH) is used in medical practice to predict the biochemical cure during the parathyroidectomy of primary hyperparathyroidism. However, there are several criteria used to predict normocalcemia after a parathyroidectomy. The purpose of this study is to determine which criterion is the one that correspons to the lowest risk of presenting a persistent hyperparathyroidism after a parathyroidectomy due to primary hyperparathyroidism. Materials and methods: Publications made in the last 10 years have been analyzed taking as a source of compilations the PubMed database, works published in Journal of the American Medical Association and World Journal of Surgery. Conclusiion: The final IOPTH criterion in values below 65 pg/mL, and especially below 40 pg/mL, seems to be the best predictor of low risk of persistent disease compared to the IOPTH decrease criterior Below 50% of the basal value (AU)
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Humanos , Hormônio Paratireóideo , Neoplasias das Paratireoides/cirurgia , Medição de Risco , Hiperparatireoidismo Primário/cirurgia , Estudos de ViabilidadeRESUMO
The current view of the neurobiology of learning and memory suggests that long-term memory (LTM) depends not only on the de novo protein synthesis but also on the synthesis of mRNA even hours after the acquisition of memory, as well as that the regulation of transcription through the histone acetylation is essential for the memory establishment. Our previous studies showed that protein synthesis inhibition around the time of training and 5-7 hours after acquisition in the insular cortex (IC) prevents the consolidation of conditioned taste aversion (CTA), a well-established learning and memory paradigm in which an animal learns to associate a novel taste with nausea. However, the participation of mRNA synthesis and the epigenetic regulation through histone acetylation in this process remains unexplored. In the present study we evaluated the effect of the inhibition of transcription as well as deacetylation of histones at two temporal windows on the consolidation of CTA. Thus, immediately or seven hours after CTA acquisition animals received a microinfusion of 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole (DRB) or MS-275 in the IC, respectively. The present results show that transcription inhibition immediately and 7 h after acquisition impairs the CTA memory consolidation, whereas the inhibition of histone deacetylation strengths this memory at those temporal windows. These findings reveal that CTA memory requires recurrent rounds of transcriptional modulation events in the IC in order to consolidate this memory trace, demonstrating that transcriptional and epigenetic modulation substantially contribute to memory-consolidation-related functions performed by a neocortical area even several hours after memory acquisition.
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Córtex Cerebral/efeitos dos fármacos , Epigênese Genética/efeitos dos fármacos , Memória/efeitos dos fármacos , Paladar/efeitos dos fármacos , Animais , Aprendizagem da Esquiva/efeitos dos fármacos , Córtex Cerebral/fisiologia , Condicionamento Clássico/efeitos dos fármacos , Condicionamento Clássico/fisiologia , Masculino , Memória/fisiologia , Memória de Longo Prazo/efeitos dos fármacos , Ratos WistarRESUMO
El empleo del software educativo ha constituido una exigencia en las transformaciones que en la Educación Médica Superior (EMS) en Cuba han tenido lugar para perfeccionar el Proceso de Enseñanza Aprendizaje (PEA). Al respecto el trabajo expone las características más sobresalientes de las tres etapas por las que ha transitado su gestión nacional en cuanto a infraestructura, administración del ciclo de vida del software y gestión del conocimiento. Entre los métodos empíricos más empleados se destaca la observación participante, el análisis documental y la encuesta y entre los teóricos el histórico-lógico, análisis-síntesis e inductivo-deductivo. Los resultados muestran que la gestión del Proceso de Desarrollo del Software Educativo (PDSE) ha constituido una necesidad histórica en el de cursar de la EMS y un proceso en continuo perfeccionamiento(AU)
Educational software has been a need in the transformations of medical superior education to make tuitional process perfect learning, work exposes the more outstanding characteristics of three stages that he has transited for his national steps as to infrastructure, administration of life cycle of the software and steps of knowledge. Enter empiric further methods used participating observation stands out, documentary analysis and the opinion poll and among the theorists the historic logician, analysis synthesis and inductive deductive. Aftermath evidence that the Educative Software Process Development steps has constituted a historic need in the EMS's in the time and a process in continuous perfecting(AU)
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Humanos , Masculino , Feminino , Aplicações da Informática Médica , Linguagens de Programação , Software/história , Software , CubaRESUMO
In the present work, we have investigate the cellular immune response of Galleria mellonella larvae against three strains of the gram-negative bacterium Actinobacillus pleuropneumoniae: low-virulence (780), high-virulence (1022) and the serotype 8 reference strain (R8). Prohemocytes, plasmatocytes, granulocytes, oenocytoids and spherulocytes were distinguished according to their size and morphology, their molecular markers and dye-staining properties and their role in the immune response. Total hemocyte count, differential hemocyte count, lysosome activity, autophagic response, cell viability and caspase-3 activation were determined in circulating hemocytes of naive and infected larvae. The presence of the autophagosome protein LC3 A/B within the circulating hemocytes of G. mellonella was dependent on and related to the infecting A. pleuropneumoniae strain and duration of infection. Hemocytes treated with the high-virulence strain expressed higher levels of LC3 A/B, whereas treatment with the low-virulence strain induced lower expression levels of this protein in the cells. Moreover, our results showed that apoptosis in circulating hemocytes of G. mellonella larvae after exposure to virulent bacterial strains occurred simultaneously with excessive cell death response induced by stress and subsequent caspase-3 activation.
Assuntos
Actinobacillus pleuropneumoniae/imunologia , Hemócitos/imunologia , Hemócitos/microbiologia , Mariposas/imunologia , Mariposas/microbiologia , Infecções por Actinobacillus/imunologia , Infecções por Actinobacillus/veterinária , Animais , Autofagia , Contagem de Células , Hemócitos/citologia , Imunidade Celular , Larva/citologia , Larva/imunologia , Larva/microbiologia , Mariposas/citologia , Mariposas/crescimento & desenvolvimentoRESUMO
Introducción: la acalasia es una enfermedad motora primaria del esófago con daño de la función del esfínter esofágico inferior y aperistalsis del cuerpo esofágico. Su etiología es desconocida. Objetivo: observar el comportamiento de la epidemiología y características de pacientes con acalasia, atendidos en el Centro Nacional de Cirugía de Mínimo Acceso. Métodos: se realizó un estudio retrospectivo, descriptivo y observacional en pacientes con acalasia, diagnosticados por manometría esofágica convencional, atendidos en el Centro Nacional de Cirugía de Mínimo Acceso desde enero del 2006 hasta diciembre de 2015. Resultados: se diagnosticaron 322 pacientes con acalasia a través de la manometría. La enfermedad fue más frecuente en mujeres que se encontraban en la cuarta década de la vida, con más de 4 años de evolución y sin una asociación con otras enfermedades. En la manometría esofágica se registró la pobre relajación del esfínter esofágico inferior y ausencia de peristalsis. Conclusiones: fueron identificados los rasgos típicos de la enfermedad, al ser importante el seguimiento clínico del paciente con disfagia para lograr el diagnóstico definitivo de la enfermedad(AU)
Introduction: Achalasia is a primary esophageal motor disease with lower esophageal sphincter impairment and esophageal aperistalsis. Its etiology is unknown. Objective: To observe the epidemiological behavior and characteristic of achalasia patients treated at the National Center for Minimal Invasive Surgery. Methods: A retrospective, descriptive and observational study was performed with achalasia patients, diagnosed through conventional esophageal manometry and treated at the National Center for Minimal Invasive Surgery from January 2006 to December 2015. Results: 332 patients were diagnosed with achalasia through manometry. The disease was more frequent in women at the forth decade of life, with more than 4 years of natural history, and without any association to other diseases. The esophageal manometry registered the poor relaxation of the lower esophageal sphincter and no peristalsis. Conclusions: The disease typical features were identified, on being important the dysphagia patient's clinical follow-up in order to have a final diagnosis of the disease(AU)
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Transtornos de Deglutição/etiologia , Acalasia Esofágica/diagnóstico , Acalasia Esofágica/epidemiologia , Manometria/efeitos adversos , Epidemiologia Descritiva , Estudo Observacional , Estudos RetrospectivosRESUMO
El presente artículo, analiza los diferentes aspectos relacionadoscon las medidas de prevención, aplicables a la preparación delpaciente y al ambiente quirúrgico, con la finalidad de disminuir laincidencia de infecciones operatorias. Se describen todos los facto-res ambientales y funcionales, que nos ayudarán a blindar las áreasquirúrgicas y las centrales de esterilización, para ofrecer una atención quirúrgica de calidad, siguiendo las normas y procedimientosrecomendados por organismos internacionales como la OMS(AU)
This article analyses the different aspects related to preventionmeasures, applicable to patient preparedness and surgical environ-ment, in order to reduce the incidence of operating infections. Allenvironmental and functional factors are described, which will helpus to shield surgical areas and sterilization plants, to offer qualitysurgical care, following standards and procedures recommendedby international organizations such as WHO(AU)