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In this study, the transport of salt with moderate solubility through bioinspired solid-state nanochannels was comprehensively investigated. For this purpose, bullet-shaped channels were fabricated and exposed to KClO4, a monovalent salt with moderate solubility. These channels displayed the typical rectifying behavior characteristic of asymmetrical channels but with one remarkable difference, the iontronic output exhibited a negative incremental resistance phenomenon of high gating efficiency when the transmembrane voltage in the open state was increased enough, giving rise to an inactivated state characterized by a low and stable ion current. The behavior is attributed to salt precipitation inside the channel and remarkably, it is not observed in other geometries such as cylindrical or cigar-shaped channels. Considering the central role of the surface in precipitation formation, the influence of several parameters such as electrolyte concentration, pH, and channel size was studied. Under optimized conditions, this system can alternate among three different conductance states (closed, open, and inactivated) and exhibits gating ratios higher than 20. Beyond its potential application in fields related to electronics or sensing, this study provides valuable insight into the fundamental principles behind ion rectifying behavior in solid-state channels and highlights the implications of surface phenomena at the nanoscale.
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BACKGROUND: Key and core components of effective infection prevention and control programmes (IPCPs) issued by the European Centre for Disease Prevention and Control (ECDC) and the World Health Organization (WHO) have been described. WHO core component 1 relates to the structure, organization and management of IPCPs. AIM: The objective of this study was to assess the status and the time trends of some indicators of core component 1 of IPCPs in acute hospitals in Spain throughout the period 2012-2022. METHODS: Hospital-level data from the Spanish point prevalence survey for years 2012-2022 were analysed. Core component 1 indicators were calculated and tested for association to healthcare-associated infections (HAIs). In addition, trends were also examined. RESULTS: Overall, 67.0% and 57.2% of Spanish hospitals reported having an annual infection prevention and control (IPC) plan and an annual IPC report that was approved by the hospital managing director, respectively. The global median number of full-time equivalent (FTE) IPC nurses per 250 beds for the period was 0.87 and the global median number of FTE IPC doctors was 0.70. The rates of blood cultures and stool tests for Clostridioides difficile were 39.9 and 6.1 per 1000 patient-days, respectively. No significant correlation was found between core component 1 indicators and HAI prevalence. CONCLUSION: Spain is currently at a basic level on the structure, organization and management of IPCPs. Profound differences were found between hospitals depending on size and type.
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Infección Hospitalaria , Control de Infecciones , Organización Mundial de la Salud , España/epidemiología , Humanos , Control de Infecciones/métodos , Control de Infecciones/organización & administración , Infección Hospitalaria/prevención & control , Infección Hospitalaria/epidemiología , Hospitales/estadística & datos numéricosRESUMEN
BACKGROUND: Surveillance of antimicrobial consumption is an important component of control strategies to tackle antimicrobial resistance. AIM: To evaluate the consumption of antimicrobials using six indicators proposed by the European Center for Disease Prevention and Control. METHODS: Point prevalence survey data on antimicrobial use in Spanish hospitals throughout the period 2012-2021 were analysed. A descriptive analysis of each indicator by year was performed globally and by hospital size. A logistic regression model was used to identify significant time trends. FINDINGS: In all, 515,414 patients and 318,125 antimicrobials were included. The prevalence of antimicrobial use remained stable throughout the study period (45.7%; 95% confidence interval (CI): 45.6-45.8). Percentages of antimicrobials for systemic use and those administered parenterally showed a small and significant increasing trend (odds ratio (OR): 1.02; 95% CI: 1.01-1.02; and OR: 1.03; 95% CI: 1.02-1.03, respectively). Small improvements were found in the percentages of antimicrobials prescribed for medical prophylaxis and with the reason for use documented in patients' medical records (-0.6% and 4.2%, respectively). The percentage of surgical prophylaxis prescribed for more than 24 h shows a significant improvement, decreasing from 49.9% (95% CI: 48.6-51.3) in 2012 to 37.1% (95% CI: 35.7-38.5) in 2021. CONCLUSION: During the last decade, Spanish hospitals have had a stable but high prevalence of antimicrobial use. Little to no improvement has been made in most of the indicators analysed, except for a reduction in the prescription of surgical prophylaxis for more than 24 h.
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Antiinfecciosos , Prescripciones de Medicamentos , Humanos , Antiinfecciosos/uso terapéutico , Hospitales , Encuestas y Cuestionarios , Prevalencia , Antibacterianos/uso terapéuticoRESUMEN
Merkel cell carcinoma (MCC) is a rare aggressive neuroendocrine cutaneous carcinoma with a high mortality rate. The MCC etiology is not fully understood. Merkel cell-associated polyomavirus (MCPyV) was found in MCC patients, indicating a risk factor for the tumor. Caucasian, elderly, and immunocompromised individuals are more likely to develop this tumor. HLA-G consists of a non-classical class I (Ib) HLA molecule with an immunoregulatory function and was associated with tumor escape in different types of tumors, nonetheless, never been studied in MCC. The purpose of this study was to evaluate the HLA-G expression and also to detect the MCPyV in MCC patients and correlate it with the clinical course of the disease. Forty-five MCC patients were included in a retrospective study. Formalin-fixed paraffin-embedded cutaneous skin biopsies were used by immunohistochemistry and RT-PCR to verify the HLA-G expression and MCPyV infection. HLA-G expression was found in 7 (15.6%), while the presence of MCPyV was detected in 28 (62.2%) of the studied patients. No significant association was found between HLA-G expression and MCPyV infection (p = 0.250). The presence of MCPyV was associated with areas of low sunlight exposure (p = 0.042) and the HLA-G expression with progression to death (p = 0.038). HLA-G expression was detected in MCC patients, as well as the MCPyV presence was confirmed. These markers could represent factors with a possible impact on patient survival; however, further studies with a greater number of patients are needed, to better elucidate the possible role in disease progression.
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Carcinoma de Células de Merkel , Poliomavirus de Células de Merkel , Infecciones por Polyomavirus , Neoplasias Cutáneas , Humanos , Anciano , Carcinoma de Células de Merkel/genética , Carcinoma de Células de Merkel/patología , Poliomavirus de Células de Merkel/genética , Antígenos HLA-G , Neoplasias Cutáneas/genética , Estudios Retrospectivos , Infecciones por Polyomavirus/complicaciones , Infecciones por Polyomavirus/genéticaRESUMEN
Los parches transdérmicos forman parte de los llamados sistemas de liberación controlada, los cuales permiten el control posológico y cinético de la liberación del principio activo. En 2015 la Agencia Española de Medicamentos y Productos Sanitarios (AEMPS) publicó un comunicado en el que establecía 5 grupos de intercambio para los parches transdérmicos de nitroglicerina.El principio activo nitroglicerina pertenece al grupo terapéutico C01DA y es un potente vasodilatador utilizado en la prevención de la angina de pecho. Hasta ese momento, los parches de nitroglicerina eran susceptibles de sustitución durante servicio de guardia o desabastecimiento siempre de acuerdo a los criterios de composición, grupo terapéutico, unidades de dosis y envase. Sin embargo, la constitución de estos grupos modificó la norma de sustitución ya que sólo se permite realizar intercambios entre los parches incluidos por la AEMPS dentro del mismo tipo.De acuerdo con la AEMPS, la base de datos de BOT Plus del Consejo General de Colegios Oficiales de Farmacéuticos incluye en la ficha de cada parche de nitroglicerina el tipo al que pertenece, pero la descripción de cada tipo no aparece especificada, como tampoco aparece reflejada con claridad en los programas informáticos de gestión utilizados en farmacia comunitaria. El desabastecimiento de algunas de las marcas prescritas con más frecuencia ha obligado al farmacéutico comunitario a la sustitución de estos medicamentos, apareciendo dudas a la hora de tomar esta decisión y generando, por tanto, numerosas consultas a los centros de información de nuestros Colegios Profesionales. (AU)
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Humanos , Nitroglicerina , Vasodilatadores , Consejos de Especialidades , FarmaciaRESUMEN
The expansion of Integrated Pest Management (IPM), including biological control, has had several positive consequences for the agricultural environment and participants in the production chain. To enable successful operation and applications of biological control, production of insects used for rearing natural enemies (parasitoids and predators) must be optimized to reduce time and costs and improve production both qualitatively and quantitatively. The present study evaluated the effect of wheat varieties, the main component of artificial diets for Ephestia kuehniella, on the reproductive performance and biological parameters of this flour moth, which is used for mass production of Trichogramma spp. (Hymenoptera: Trichogrammatidae) and other parasitoids and predators. Four varieties of wheat were compared: BRS 327, BRS Marcante, BRS Parrudo, and KBR, with and without the addition of corn E. kuehniella reared on 97% BRS 327 wheat flour + 3% nutritional yeast had the best biological parameters and substitution of corn for about half of the wheat increased the number of eggs per female.
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Himenópteros , Mariposas Nocturnas , Animales , Dieta , Femenino , Harina , Humanos , Óvulo , Triticum , Zea maysRESUMEN
Merkel cell carcinoma (MCC) is a rare aggressive neuroendocrine cutaneous carcinoma with a high mortality rate. The MCC etiology is not fully understood. Merkel cell-associated polyomavirus (MCPyV) was found in MCC patients, indicating a risk factor for the tumor. Caucasian, elderly, and immunocompromised individuals are more likely to develop this tumor. HLA-G consists of a non-classical class I (Ib) HLA molecule with an immunoregulatory function and was associated with tumor escape in different types of tumors, nonetheless, never been studied in MCC. The purpose of this study was to evaluate the HLA-G expression and also to detect the MCPyV in MCC patients and correlate it with the clinical course of the disease. Forty-five MCC patients were included in a retrospective study. Formalin-fixed paraffin-embedded cutaneous skin biopsies were used by immunohistochemistry and RT-PCR to verify the HLA-G expression and MCPyV infection. HLA-G expression was found in 7 (15.6%), while the presence of MCPyV was detected in 28 (62.2%) of the studied patients. No significant association was found between HLA-G expression and MCPyV infection (p = 0.250). The presence of MCPyV was associated with areas of low sunlight exposure (p = 0.042) and the HLA-G expression with progression to death (p = 0.038). HLA-G expression was detected in MCC patients, as well as the MCPyV presence was confirmed. These markers could represent factors with a possible impact on patient survival; however, further studies with a greater number of patients are needed, to better elucidate the possible role in disease progression.
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Carcinoma de Células de Merkel , Antígenos HLA-GRESUMEN
La Sección de Vía Aérea de la Sociedad Catalana de Anestesiología, Reanimación y Terapéutica del Dolor (SCARTD) presenta la actualización de las recomendaciones para la evaluación y manejo de la vía aérea difícil con el fin de incorporar los avances técnicos y los cambios observados en la práctica clínica desde la publicación de la primera edición en 2008. La metodología elegida fue la adaptación de 5 guías internacionales recientemente publicadas, cuyo contenido fue previamente analizado y comparado de forma estructurada, y el consenso de expertos de los 19 centros participantes. El documento final fue sometido a la valoración de los miembros de la SCARTD y a la revisión por parte de 11 expertos independientes. Estas recomendaciones están pues sustentadas en la evidencia científica actualmente disponible y en un amplio acuerdo de los profesionales de su ámbito de aplicación. En esta edición se amplía la definición de vía aérea difícil, abarcando todas las técnicas de manejo, y se hace mayor hincapié en la valoración de la vía aérea y en la clasificación en 3 categorías según el potencial grado de dificultad y las consideraciones de seguridad adicionales, que guiarán la planificación de la estrategia a seguir. La preparación previa al manejo de la vía aérea, no solo relativa al paciente y al material, sino también a la comunicación e interacción entre todos los agentes implicados, ocupa un lugar destacado en todos los escenarios incluidos en el presente documento. El texto refleja el aumento progresivo del uso de los videolaringoscopios y de los dispositivos de segunda generación en nuestro entorno y promueve tanto su uso electivo como el uso precoz en la vía aérea no prevista. También recoge la creciente utilización de la ecografía como herramienta de apoyo en la exploración y toma de decisiones. Se han abordado nuevos escenarios como el riesgo de broncoaspiración y la extubación considerada difícil. Finalmente, se trazan las líneas maestras de los programas de entrenamiento y formación continuada en vía aérea necesarios para garantizar la implementación efectiva y segura de las recomendaciones
The Airway Division of the Catalan Society of Anaesthesiology, Intensive Care and Pain Management (SCARTD) presents its latest guidelines for the evaluation and management of the difficult airway. This update includes the technical advances and changes observed in clinical practice since publication of the first edition of the guidelines in 2008. The recommendations were defined by a consensus of experts from the 19 participating hospitals, and were adapted from 5 recently published international guidelines following an in-depth analysis and systematic comparison of their recommendations. The final document was sent to the members of SCARTD for evaluation, and was reviewed by 11 independent experts. The recommendations, therefore, are supported by the latest scientific evidence and endorsed by professionals in the field. This edition develops the definition of the difficult airway, including all airway management techniques, and places emphasis on evaluating and classifying the airway into 3 categories according to the anticipated degree of difficulty and additional safety considerations in order to plan the management strategy. Pre-management planning, in terms of preparing patients and resources and optimising communication and interaction between all professionals involved, plays a pivotal role in all the scenarios addressed. The guidelines reflect the increased presence of video laryngoscopes and second-generation devices in our setting, and promotes their routine use in intubation and their prompt use in cases of unanticipated difficult airway. They also address the increased use of ultrasound imaging as an aid to evaluation and decision-making. New scenarios have also been included, such as the risk of bronchoaspiration and difficult extubation Finally, the document outlines the training and continuing professional development programmes required to guarantee effective and safe implementation of the guidelines
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Humanos , Manejo de la Vía Aérea/métodos , Anestesia Endotraqueal/métodos , Anestésicos/administración & dosificación , Intubación Intratraqueal/métodos , Extubación Traqueal/métodos , Consenso , Obstrucción de las Vías Aéreas/prevención & control , Cuidados Preoperatorios/métodosRESUMEN
The Airway Division of the Catalan Society of Anaesthesiology, Intensive Care and Pain Management (SCARTD) presents its latest guidelines for the evaluation and management of the difficult airway. This update includes the technical advances and changes observed in clinical practice since publication of the first edition of the guidelines in 2008. The recommendations were defined by a consensus of experts from the 19 participating hospitals, and were adapted from 5 recently published international guidelines following an in-depth analysis and systematic comparison of their recommendations. The final document was sent to the members of SCARTD for evaluation, and was reviewed by 11 independent experts. The recommendations, therefore, are supported by the latest scientific evidence and endorsed by professionals in the field. This edition develops the definition of the difficult airway, including all airway management techniques, and places emphasis on evaluating and classifying the airway into 3 categories according to the anticipated degree of difficulty and additional safety considerations in order to plan the management strategy. Pre-management planning, in terms of preparing patients and resources and optimising communication and interaction between all professionals involved, plays a pivotal role in all the scenarios addressed. The guidelines reflect the increased presence of video laryngoscopes and second-generation devices in our setting, and promotes their routine use in intubation and their prompt use in cases of unanticipated difficult airway. They also address the increased use of ultrasound imaging as an aid to evaluation and decision-making. New scenarios have also been included, such as the risk of bronchoaspiration and difficult extubation Finally, the document outlines the training and continuing professional development programmes required to guarantee effective and safe implementation of the guidelines.
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Manejo de la Vía Aérea/normas , Manejo de la Vía Aérea/métodos , Anestesia , Cuidados Críticos , Árboles de Decisión , Humanos , Manejo del DolorAsunto(s)
Ácidos Carboxílicos , Carcinoma de Células Transicionales/diagnóstico por imagen , Ciclobutanos , Tomografía Computarizada por Tomografía de Emisión de Positrones , Neoplasias Ureterales/diagnóstico por imagen , Neoplasias de la Vejiga Urinaria/diagnóstico por imagen , Anciano , Humanos , Masculino , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodosRESUMEN
Within Agaricus subg. Minores, A. sect. Minores remains a little-studied section due generally to its delicate sporocarps often lacking taxonomically relevant morphological characters. To reconstruct the section, using the recent taxonomic system based on divergence times, and to evaluate the species diversity of A. sect. Minores in the Greater Mekong Subregion, 165 specimens were incorporated in phylogenetic analyses. A dated tree based on nuclear ITS, LSU and tef1-α sequence data allowed us to better circumscribe A. subg. Minores and to propose a new subgenus, A. subg. Minoriopsis, which is only known from tropical and subtropical regions of the Americas. A larger tree based on ITS sequences indicated that, with 81 phylogenetic species, the reconstructed section Minores is now one of the largest sections in the genus. Within A. subg. Minores, a new section, A. sect. Leucocarpi, and eleven new species are described from the Greater Mekong Subregion. Thirty-eight species of A. sect. Minores from this region of Asia were distributed in multiple clades that successively diverged over the past 24 million years. In contrast, species reported from Europe mostly grouped in a single non-tropical clade, suggesting a major species diversification following the middle Miocene climatic optimum.
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TITLE: Polimiositis secundaria a un linfoma no Hodgkin.
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Linfoma de Células B Grandes Difuso/complicaciones , Polimiositis/etiología , Humanos , Masculino , Persona de Mediana EdadRESUMEN
Los tumores mamarios son poco frecuente en equinos; Se han reportado prevalencias entre 0,11% y 2%, en plantas de beneficio; en Colombia no hay estudios que determinen la prevalencia de este tipo de enfermedad. Se presenta un caso clínico de una yegua de raza criollo colombiano con signos de depresión, tos, dificultad respiratoria y aumento de tamaño de la glándula mamaria con dolor. Debido a la severidad de los signos respiratorios se tomó la decisión de aplicar la eutanasia. En la necropsia se encontraron múltiples masas irregulares dentro de la cavidad torácica, nódulos firmes en los pulmones y la glándula mamaria de consistencia dura al corte. Según los hallazgos histopatológicos, el diagnóstico definitivo determinó un carcinoma de glándula mamaria tipo simple, papilar, grado III con metástasis pulmonar extensa. Este artículo es el primer reporte de una yegua criolla colombiana con diagnóstico de carcinoma mamario, metástasis pulmonar, la descripción de su presentación clínica y el respectivo diagnóstico histopatológico.
Breast cancer rarely occurs in horses. A prevalence that fluctuates from 0.11% to about 0.2% have been found in slaughter houses. Nevertheless, in Colombia there are not studies that have determined this disease prevalence yet. This article describes clinical sings and progress of a Colombian Criollo mare which was depressed with cough, respiratory distress, swollen and painful udder. Due to the unfavorable clinical progress the owner decides to euthanize the mare, on postmortem examination was found several irregular masses in thoracic cavity, multiple firm nodes disseminated in the lungs, and a mammary gland swollen and hard to cut. Microscopic examination reveal a mammary gland simple papillary carcinoma grade III with extensive lung metastasis. To the authors knowledge this is the first report on a breast carcinoma with pulmonary metastasis diagnosis made on this breed, its clinical presentation and histopathological diagnosis.
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Fungi are an extraordinary and immensely diverse group of microorganisms that colonize many habitats even competing with other microorganisms. Fungi have received recognition for interesting metabolic activities that have an enormous variety of biotechnological applications. Previously, volatile organic compounds produced by fungi (FVOCs) have been demonstrated to have a great capacity for use as antagonist products against plant pathogens. However, in recent years, FVOCs have been received attention as potential alternatives to the use of traditional pesticides and, therefore, as important eco-friendly biotechnological tools to control plant pathogens. Therefore, highlighting the current state of knowledge of these fascinating FVOCs, the actual detection techniques and the bioactivity against plant pathogens is essential to the discovery of new products that can be used as biopesticides.
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Biotecnología , Hongos/metabolismo , Enfermedades de las Plantas/prevención & control , Compuestos Orgánicos Volátiles/metabolismo , Hongos/química , Enfermedades de las Plantas/microbiología , Plantas/efectos de los fármacos , Plantas/microbiología , Compuestos Orgánicos Volátiles/químicaRESUMEN
This study examines, for the first time, the effect of hybrid Elaeis oleifera × E. guineensis palm oil supplementation on human plasma lipids related to CVD risk factors. One hundred sixty eligible participants were randomized and assigned to one of the two treatments: 25 mL hybrid palm oil (HPO group) or 25 mL extra virgin olive oil (EVOO group) daily for 3 months. Fasting venous samples were obtained at baseline and after 1, 2 and 3 months for measurement of plasma lipids (TC, LDL-C, HDL-C and TAGs). Changes in body mass index and waist circumference were also assessed. Although there was an overall reduction in TC (7.4%, p < 0.001) and in LDL-C (15.6%, p < 0.001), no significant differences were found between the treatment groups in a repeated measures analysis of variance for TC (p = 0.0525), LDL-C (p = 0.2356), HDL-C (p = 0.8293) or TAGs (p = 0.3749). Furthermore, HPO consumption had similar effects on plasma lipids to EVOO, thus providing additional support for the concept that hybrid Elaeis oleifera × E. guineensis palm oil can be seen as a "tropical equivalent of olive oil".
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Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/prevención & control , Suplementos Dietéticos , Lípidos/sangre , Aceites de Plantas/farmacología , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Aceite de Palma , Aceites de Plantas/química , Factores de RiesgoRESUMEN
Aegorhinus nodipennis (Hope) (Coleoptera: Curculionidae) is an important native pest in fruit crops that is mainly found in European hazelnut fields in the south of Chile. We investigated the behavioral response of A. nodipennis to volatile compounds released from the essential oil of Achillea millefolium and its main constituent using olfactometric bioassays. Gas chromatographic and mass spectral analysis of the A. millefolium essential oil revealed the presence of 11 compounds. Monoterpene ß-thujone (96.2%) was the main component of the oil. Other compounds identified were α-thujone, 1,8-cineole, p-cymene, and 4-terpineol, all with percentages below 1%. Both A. millefolium essential oil and thujone exhibited a repellent activity against this insect at the higher doses tested (285.7 ng/cm(2)), demonstrating their potential as repellents for this species.
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Achillea , Repelentes de Insectos/farmacología , Aceites Volátiles/farmacología , Gorgojos/efectos de los fármacos , Animales , Chile , Aceites Volátiles/metabolismo , Gorgojos/metabolismoRESUMEN
Uranium-lead geochronology in detrital zircons and provenance analyses in eight boreholes and two surface stratigraphic sections in the northern Andes provide insight into the time of closure of the Central American Seaway. The timing of this closure has been correlated with Plio-Pleistocene global oceanographic, atmospheric, and biotic events. We found that a uniquely Panamanian Eocene detrital zircon fingerprint is pronounced in middle Miocene fluvial and shallow marine strata cropping out in the northern Andes but is absent in underlying lower Miocene and Oligocene strata. We contend that this fingerprint demonstrates a fluvial connection, and therefore the absence of an intervening seaway, between the Panama arc and South America in middle Miocene times; the Central American Seaway had vanished by that time.
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A retrospective, comparative cohort study was performed of metacarpophalangeal or proximal interphalangeal joint arthrodesis with either tension band (n = 28) or compression (Acutrak Mini) screw (n = 29) methods. We compared rate of union, healing time, complications, and re-operation rate. Union was achieved in 26/28 (92.8%) of the tension band group (9.4 weeks) and 24/28 (85.7%) of the compression screw group (9.8 weeks). Only 28 patients in the screw group were assessed for union as one patient in the screw group sustained a fracture at the time of insertion and was converted to tension band fixation. The complication rate was 8/28 (28.6%) in the tension band group and 8/29 (27.6%) in the compression screw group. Re-operation rate was 9/28 (32.1%) in the tension band group and 1/29 (3.6%) in the compression screw group. Our findings indicate that bone healing, healing time, and complications are similar in both groups. The tension band technique had a significantly higher re-operation rate (hardware removal), but was the technique for salvage following failure of the screw technique.