Empleo de ventilación de alta frecuencia oscilatoria intraoperatoria en neonatos con hipoplasia pulmonar / Use of intraoperative high frequency oscillatory ventilation in neonates with pulmonary hypoplasia

La ventilación de alta frecuencia oscilatoria (VAFO) es una modalidad ventilatoria ampliamente utilizada en las unidades de cuidados intensivos neonatales. Su principal indicación es la patología pulmonar restrictiva con dificultad en alcanzar un adecuado intercambio gaseoso en ventilación mecánica convencional (VMC), siendo necesaria una elevada asistencia que puede suponer riesgo de barotrauma y volutrauma en un pulmón inmaduro. Las publicaciones sobre el empleo de VAFO en quirófano son limitadas y se reducen principalmente a su uso durante la reparación de hernia diafragmática congénita. La limitada experiencia de este método ventilatorio en quirófano puede suponer una barrera para el anestesiólogo. Sin embargo, es importante recordar los beneficios que esta modalidad ventilatoria aporta como estrategia de protección pulmonar. Se presentan dos casos de hipoplasia pulmonar neonatal de diferente etiología, en los que se empleó VAFO en el intraoperatorio con buenos resultados en la oxigenación y ventilación.(AU)

High-frequency oscillatory ventilation (HFOV) is a ventilatory modality widely used in neonatal intensive care units. Its main indication is restrictive lung pathology with difficult gas exchange using conventional mechanical ventilation (CMV). Patients receiving CMV require high intensity care, and immature lungs can be at risk for barotrauma and volutrauma. The few studies that have explored the use of HFOV in the operating room are mainly limited to HFVO during congenital diaphragmatic hernia repair. Limited experience of this ventilatory method in the operating room may be a disadvantage for the anesthesiologist. However, it is important to remember the benefits of this technique as a lung protection strategy. We report two cases of neonatal pulmonary hypoplasia of different etiology in which good oxygenation and ventilation was achieved with intraoperative HFOV.(AU)

Use of intraoperative high frequency oscillatory ventilation in neonates with pulmonary hypoplasia.

High-frequency oscillatory ventilation (HFOV) is a ventilatory modality widely used in neonatal intensive care units. Its main indication is restrictive lung pathology with difficult gas exchange using conventional mechanical ventilation (CMV). Patients receiving CMV require high intensity care, and immature lungs can be at risk for barotrauma and volutrauma. The few studies that have explored the use of HFOV in the operating room are mainly limited to HFVO during congenital diaphragmatic hernia repair. Limited experience of this ventilatory method in the operating room may be a disadvantage for the anesthesiologist. However, it is important to remember the benefits of this technique as a lung protection strategy. We report two cases of neonatal pulmonary hypoplasia of different etiology in which good oxygenation and ventilation was achieved with intraoperative HFOV.

Traumatic Childhood Experiences and Posttraumatic Stress Disorder Among Veterans in Substance Use Disorder Treatment.

Posttraumatic stress disorder (PTSD) dramatically increases the risk of both substance use disorder (SUD) and suicide in veterans. Military-related trauma, however, may not be the only or most significant trauma experienced by veterans. Trauma exposure is high among those joining the military. This study sought to identify the prevalence of five types of childhood trauma (emotional, physical, and sexual abuse and emotional and physical neglect) and three adult trauma symptom clusters (intrusive thoughts, avoidance, and hyperarousal) among veterans seeking SUD treatment and to clarify the associations between types of trauma and specific symptom clusters. Veterans at three Veterans Affairs (VA) SUD treatment facilities in the Midwest completed surveys at treatment entry (n1 = 195) and at 6-month follow-up (n2 = 138). Measures included the Childhood Trauma Questionnaire-Short Form and the PTSD Checklist, either a military or a civilian version, depending on whether the most traumatic event occurred in or out of the military. The prevalence of childhood trauma was high, ranging from 40.5% experiencing physical abuse down to 22.8% experiencing sexual abuse. At baseline, 60.2% of the military trauma group met criteria for PTSD, compared with 33.9% of the civilian trauma group, a significant difference, χ2(1, N = 195) = 14.46, p < .01. Childhood emotional and physical abuse were moderately associated with intrusion and hyperarousal in the military trauma group, but in the civilian trauma group a broader spectrum of childhood traumas were associated with a broader array of symptom clusters, including avoidance. At follow-up, symptoms improved and were less associated with childhood trauma. These findings illuminate the persistence of effects of childhood trauma and recommend more targeted PTSD treatments.

Milk production responses, rumen fermentation, and blood metabolites of dairy cows fed increasing concentrations of forage rape (Brassica napus ssp. Biennis).

The aim of this study was to determine animal performance, rumen fermentation, and health-related blood metabolites of dairy cows in mid lactation fed with increasing levels (30 and 45%) of forage rape (FR) in the diet. Twelve pregnant multiparous lactating Holstein-Friesian dairy cows were randomly allocated to 1 of 3 dietary treatments in a replicated 3 × 3 Latin square design. The experiment was divided into three 21-d periods. For the control diet, 13.0 kg (dry matter, DM) of grass silage, 3.0 kg DM of commercial concentrate, 2.7 kg of DM cold-pressed extracted canola meal, and 0.45 kg DM of solvent-extracted soybean meal were offered daily. For the other two treatments, 30 and 45% of the DM from silage, canola meal, and commercial concentrate were replaced in equal proportions with FR. Data were analyzed individually using linear and quadratic orthogonal polynomials. Ingestive behavior was altered by the inclusion of FR. We observed a linear increase in eating time at the expense of rumination time. Nevertheless, total DM intake was not affected by dietary treatments, averaging 19.5 ± 0.24 kg of DM/d. Milk yield increased linearly with increasing concentration of FR in the diet. Thus, feed efficiency of cows (kg of milk/kg of DM intake) increased linearly with the percentage of FR in the diet. Inclusion of FR in the diet had no effect on milk composition or milk sensory characteristics. Mean rumen pH of cows decreased linearly from the control to the 45% FR diet; however, dietary treatments had no effect on the daily amount of time that rumen pH was below 5.8 (252 ± 71.4), indicating no risk of subacute ruminal acidosis. Concentrations of total volatile fatty acids in the rumen and molar proportions of acetate and butyrate were increased with FR inclusion, whereas the proportion of propionate was linearly reduced. Excretion of uric acid and total purine derivatives tended to be greater for cows fed FR, which resulted in a trend toward a linear increase in estimated microbial N flow. However, N use efficiency was not affected by FR inclusion. Although differences for some hematological measures (increased white blood cell and neutrophils counts) and a quadratic response for glutamate dehydrogenase for cows fed FR in the diet (decreased with inclusion of 30% and increased with 45% in the diet) were observed, all values were within appropriate ranges for dairy cows. These results indicated that including FR to dairy cow diets, up to 45% of diet DM, improved milk production due to changes in volatile fatty acids and predicted microbial N flow and had no negative effects on dairy cow health or sensory characteristics of milk.

[Ethical aspects of specific precautions programs in patients infected or colonised by multidrug-resistant microorganisms in a hospital setting]. / Aspectos éticos de los programas de precauciones específicas de contacto en pacientes infectados o colonizados por microorganismos multirresistentes en el ámbito hospitalario.

The approach to public health, patient safety and quality of care has led to analysing health situations or problems from a population perspective, in a wide way and giving priority to factors that can normally be left in the background from a clinical point of view. For years, the problem of the use and abuse of antimicrobials, the increase and diffusion of microorganisms resistant to them, cross-transmission, and healthcare related infections have been prioritised both nationally and internationally. To combat these problems, various strategies are being developed and put into practice, from the policies of rational use and optimization of antimicrobials, surveillance, and control of infections related to health care, to training information and awareness strategies. One of the pillars of surveillance and control is the correct application of standard and specific precautions, which within the framework of these comprehensive programs aim to control the transmission of microorganisms of special microbiological and/or epidemiological interest through a series of measures. In hospitals, the application of these precautions (single room, barrier measures, restrictions on access to rooms, waste management…) in patients infected or colonised by these microorganisms can have different repercussions, both for patients and the professionals that attend them, and it is considered pertinent that the protocols and/or programs of specific precautions explicitly include the analysis of the ethical aspects in their preparation, implementation, and monitoring.

Milk production responses and rumen fermentation of dairy cows supplemented with summer brassicas.

Forage brassicas, such as summer turnip (ST; Brassica rapa) and forage rape (FR; Brassica napus), are used as supplementary crops during summer. However, studies with lactating dairy cows fed these forages are limited and report inconsistent productive responses. The aim of this study was to determine dry matter intake, rumen fermentation and milk production responses of dairy cows in mid-lactation supplemented with and without summer ('ST' or 'FR') brassicas. Twelve multiparous lactating dairy cows were randomly allocated to three dietary treatments in a replicated 3 × 3 Latin square design balanced for residual effects over three 21-day periods. The control diet consisted of 16.2 kg DM of grass silage, 2.25 kg DM of commercial concentrate and 2.25 kg DM solvent-extracted soybean meal. For the other two dietary treatments, 25% of the amounts of silage and concentrates were replaced with FR or ST. The inclusion of forage brassicas had no effects on milk production (24.2 kg cow/day average) and composition (average milk fat and protein 43.2 and 33.6 g/l, respectively). Dry matter intake was 0.98 kg and 1.12 kg lower for cows supplemented with FR and ST, respectively, resulting in a greater feed conversion efficiency (1.35 kg milk/kg DM for ST and FR v. 1.27 kg milk/kg DM for the control diet). Intraruminal pH was lower for cows supplemented with ST compared to the control diet; however, it did not decrease below pH 5.8 at any time of the day. After feeding, the concentrations of total short-chain fatty acids (SCFAs) in rumen contents increased with ST supplementation compared to the control diet. Inclusion of FR in the diet increased the molar proportion of acetate (68.5 mmol/100 mmol) in total SCFA at the expense of propionate, measured 6 h after feeding of the forage. The molar proportion of butyric acid was greater with ST and FR supplementation (13.1 and 12 mmol/100 mmol, respectively) than in control cows. The estimated microbial nitrogen (N) flow was 89.1 g/day greater when supplementing FR compared to the control diet. Based on the haematological measures, the inclusion of summer brassica forages did not affect the health status of the animals. These results indicate that mid-lactation dairy cows fed brassicas are able to maintain production despite the reduced intake, probably due to improved rumen fermentation and therefore nutrient utilization.

Bloqueo del nervio peneano ecoguiado en pediatría / Ultrasound-guided penile nerve block in paediatrics

No disponible

Cholinergic neural activity directs retinal layer-specific angiogenesis and blood retinal barrier formation.

Blood vessels in the central nervous system (CNS) develop unique features, but the contribution of CNS neurons to regulating those features is not fully understood. We report that inhibiting spontaneous cholinergic activity or reducing starburst amacrine cell numbers prevents invasion of endothelial cells into the deep layers of the retina and causes blood-retinal-barrier (BRB) dysfunction in mice. Vascular endothelial growth factor (VEGF), which drives angiogenesis, and Norrin, a Wnt ligand that induces BRB properties, are decreased after activity blockade. Exogenous VEGF restores vessel growth but not BRB function, whereas stabilizing beta-catenin in endothelial cells rescues BRB dysfunction but not vessel formation. We further identify that inhibiting cholinergic activity reduces angiogenesis during oxygen-induced retinopathy. Our findings demonstrate that neural activity lies upstream of VEGF and Norrin, coordinating angiogenesis and BRB formation. Neural activity originating from specific neural circuits may be a general mechanism for driving regional angiogenesis and barrier formation across CNS development.

Consumo máximo de oxígeno en mexicanos universitarios: correlación entre cinco test predictivos / Maximal oxygen consumption in mexican university students: correlation between five predictive tests

El objetivo de este estudio fue determinar si existen diferencias en los valores de VO2max indirecto obtenido con cinco pruebas físicas: UTMM, VAM-EVAL, Ida-Vuelta, 1000 m y Ramsbottom. Los sujetos fueron hombres mexicanos en edad universitaria sin entrenamiento previo y sin experiencia en deportes, con los siguientes parámetros: edad 19,33 ± 1,09 años (media ± 1 desviación estándar), peso 68,47 ± 9,93 kg, estatura 1,71 ± 0,06 m e IMC 23,62 ± 2,82. El VO2max indirecto (ml/kg/min, media ± 1 error estándar) por prueba fue de: 44,26 ± 3,74 para UMTT, 44,14 ± 3,01 para VAM-EVAL, 42,78 ± 2,80 para Ida y vuelta, 44,92 ± 2,33 para 1000 m y 42,67 ± 2,96 para Ramsbotton. No se encontraron diferencias significativas entre el VO2max indirecto obtenido por los sujetos de estudio en las cinco pruebas. Concluimos que las cinco pruebas son equivalentes y pueden ser usadas indistintamente para evaluar el VO2max indirecto

The objetive of this study was determining if there are differences in the measurement of indirect VO2max among five different physical tests: UMTT, VAM-EVAL, 20 MST, 1000 m and Ramsbottom. The subjects were Mexican college-age men without previous training and without sport experience with the following parameters: years 19,33±1,09 (mean ± 1 standard deviation), weight 68,47 ± 9,93 kg, height 1,71 ± 0,06 m and body mass index 23,62 ± 2,82. VO2max indirect (ml/kg/min, average ± 1 standard error) by test were: 44,26 ± 3,74 for UMTT, 44,14 ± 3,01 for VAM-EVAL, 42,78 ± 2,80 for 20 MST, 44,92 ± 2,33 for 1000 m and 42,67 ± 2,96 for Ramsbotton. We do not detect significant differences between the indirect VO2max obtained in the five tests. We concluded that the five tests are equivalent and can be used interchangeably to assess the indirect VO2max

Intensive referral to mutual-help groups: A field trial of adaptations for rural veterans.

OBJECTIVE: A multisite field trial testing whether improved outcomes associated with intensive referral to mutual help groups (MHGs) could be maintained after the intervention was adapted for the circumstances and needs of rural veterans in treatment for substance use disorder (SUD). METHODS: In three Veterans Affairs treatment programs in the Midwest, patients (N=195) received standard referral (SR) or rural-adapted intensive referral (RAIR) and were measured at baseline and 6-month follow-up. RESULTS: Both groups reported significant improvement at 6-months, but no significant differences between SR and RAIR groups in MHG participation, substance use, addiction severity, and posttraumatic stress symptoms. Inconsistent delivery of the intervention resulted in only one-third of the RAIR group receiving the full three sessions, but this group reported significantly greater 6-month abstinence from alcohol than those receiving no sessions. CONCLUSION: Further research should explore implementation problems and determine whether consistent delivery of the intervention enhances 12-step facilitation. PRACTICE IMPLICATIONS: The addition of rural-specific elements to the original intensive referral intervention has not been shown to increase its effectiveness among rural veterans.

Intensive Referral of Veterans to Mutual-Help Groups: A Mixed-Methods Implementation Evaluation.

Community-based support group participation protects against substance use disorder (SUD) relapse, but referrals during treatment are inconsistently delivered and may not acknowledge barriers facing rural patients. This formative evaluation of a rural intensive referral intervention (RAIR) to community-based support groups for veterans seeking SUD treatment surveyed patients (N = 145) and surveyed and interviewed treatment staff (N = 28). Patients and staff did not differ significantly on quantitative ratings of the helpfulness of, or satisfaction with, seven RAIR components, but staff did not deliver the intervention consistently or as designed, citing two themes: lack of commitment and lack of resources.

Caracterización nutricional, microbiológica y sensorial de queso fresco / Nutritional, microbiological and sensorial characterization of fresh cheese

Introducción y Objetivos: Teniendo en cuenta las estadísticas de desnutrición a nivel mundial y nacional, así como las metas que se tienen para 2030 en dicho ámbito; el objetivo principal de este estudio fue caracterizar el potencial nutricional del queso fresco colombiano, evidenciando su capacidad para cumplir con los requerimientos necesarios en los programas de alimentación escolar colombiano, el cual proporciona alternativas para el cumplimiento de las metas plasmadas bajo el marco de los Objetivos del desarrollo Sostenible. Métodos: Inicialmente fue determinada la calidad de la leche con la que se preparó el queso fresco; para ello se evaluó la alcalinidad, acidez y presencia de antibióticos. Con el cumplimiento de dichos aspectos se realizó la producción de queso fresco (15 Toneladas por semana durante 15 semanas), con la cual se evaluaron los siguientes parámetros: Humedad, proteína, grasa, perfil lipídico, ceniza, contenido de hierro y calcio; adicionalmente fue realizada una evaluación sensorial, también se determinó el contenido de coliformes fecales, presencia de Salmonella spp. y Listeria Monocytogenes. Los anteriores análisis fueron realizados por triplicado. Resultados y discusión: El queso evidenció un alto contenido en proteína, grasas (principalmente insaturadas) y calcio, lo que lo hace un producto con alto valor nutricional y calórico. Adicionalmente, presentó un nivel de aceptación alto por parte del panel sensorial y el cumplimiento en los parámetros microbiológicos evaluados con respecto a la normatividad legal vigente. Conclusión: A partir de los resultados bromatológicos, microbiológicos y sensoriales, se concluye que el queso fresco es un producto necesario dentro de las estrategias de alimentación como el programa de alimentación escolar colombiano

Introduction and Objectives: Considering malnutrition statistics worldwide and nationally, as well as the goals they have for 2030 in this area; The main objective of this study was to characterize the nutritional potential of fresh Colombian cheese, demonstrating its ability to meet the requirements of the Colombian school feeding programs, which offers alternatives for the fulfillment of the goals set out under the objectives framework. of Sustainable development Methods: Initially the quality of the milk with which fresh cheese was prepared was determined; For this, the alkalinity, acidity and presence of antibiotics were evaluated. With the fulfillment of these aspects, the production of fresh cheese was carried out (15 Tons per week for 15 weeks), with which the following parameters were evaluated: Moisture, protein, fat, lipid profile, ash, iron and calcium content; In addition, a sensory evaluation was carried out with an sensorial panel as well as the fecal coliform content, presence of Salmonella spp. and Listeria Monocytogenes. The first analyzes were performed in triplicate. Results and discussion: The cheese showed a high content of protein, mainly (unsaturated fats) and calcium, which makes a product with high nutritional and caloric value. Additionally, it presents a high level of acceptance by the sensory panel and compliance with the microbiological parameters evaluated with respect to current legal regulations. Conclusion: Based on the bromatological, microbiological and sensory results, it is concluded that fresh cheese is a necessary product within feeding strategies such as the Colombian school feeding program

Efecto de la lesión electrolítica del estriado dorsomedial sobre la conducta sexual y actividad locomotora de la rata / Effect of electrolytic lesion of the dorsomedial striatum on sexual behaviour and locomotor activity in rats

Introducción: Las áreas motoras corticales no solo son influenciadas por aferencias sensitivas periféricas y áreas de asociación prefrontales, sino también por los ganglios basales, específicamente el estriado. El estriado dorsomedial (EDM) y el estriado dorsolateral están involucrados en el aprendizaje espacial y el aprendizaje estímulo-respuesta; sin embargo, cada una de estas zonas pudiera mediar distintos componentes del aprendizaje. El propósito del estudio es determinar el efecto de la lesión electrolítica del EDM sobre el aprendizaje y ejecución de la conducta locomotora y sexual en ratas macho. Método: Una vez que los sujetos aprendieron a ejecutar las pruebas motoras de equilibrio, laberinto, rampa de ascenso y la conducta sexual, se realizó la lesión electrolítica del EDM. Cinco días después se realizaron las pruebas en 2 ocasiones más y se compararon las latencias de ejecución de cada prueba. Resultados: Después de la lesión, los valores promedio de latencia, incrementaron durante la ejecución de las pruebas de laberinto y equilibrio. Sin embargo, los valores promedio en la prueba rampa y conducta sexual, no aportaron efectos contrastantes entre los grupos. Conclusiones: La lesión electrolítica del EDM modifica la ejecución de la actividad locomotora (prueba de laberinto y equilibrio), pero no la ejecución de la conducta sexual (AU)

Introduction: Cortical motor areas are influenced not only by peripheral sensory afferents and prefrontal association areas, but also by the basal ganglia, specifically the striatum. The dorsomedial striatum (DMS) and dorsolateral striatum are involved in both spatial and stimulus-response learning; however, each of these areas may mediate different components of learning. The aim of the study is to determine the effect of electrolytic lesion to the DMS on the learning and performance of sexual behaviour and locomotor activity in male rats. Method: Once the subjects had learned to perform motor tests of balance, maze navigation, ramp ascent, and sexual behaviour, they underwent electrolytic lesion to the DMS. Five days later, the tests were repeated on 2 occasions and researchers compared performance latencies for each test. Results: Average latency values for performance on the maze and balance tests were higher after the lesion. However, the average values for the ramp test and for sexual behaviour did not differ between groups. Conclusions: Electrolytic lesion of the DMS modifies the performance of locomotor activity (maze test and balance), but not of sexual behavior (AU)

Effect of electrolytic lesion of the dorsomedial striatum on sexual behaviour and locomotor activity in rats. / Efecto de la lesión electrolítica del estriado dorsomedial sobre la conducta sexual y actividad locomotora de la rata.

INTRODUCTION: Cortical motor areas are influenced not only by peripheral sensory afferents and prefrontal association areas, but also by the basal ganglia, specifically the striatum. The dorsomedial striatum (DMS) and dorsolateral striatum are involved in both spatial and stimulus-response learning; however, each of these areas may mediate different components of learning. The aim of the study is to determine the effect of electrolytic lesion to the DMS on the learning and performance of sexual behaviour and locomotor activity in male rats. METHOD: Once the subjects had learned to perform motor tests of balance, maze navigation, ramp ascent, and sexual behaviour, they underwent electrolytic lesion to the DMS. Five days later, the tests were repeated on 2 occasions and researchers compared performance latencies for each test. RESULTS: Average latency values for performance on the maze and balance tests were higher after the lesion. However, the average values for the ramp test and for sexual behaviour did not differ between groups. CONCLUSIONS: Electrolytic lesion of the DMS modifies the performance of locomotor activity (maze test and balance), but not of sexual behaviour.

Periimplantitis y mucositis periimplantaria. Factores de riesgo, diagnóstico y tratamiento / Risk factors, diagnosis and treatment of peri-implant disease: A literature

Introducción: El objetivo de este trabajo es profundizar en el conocimiento de la enfermedad periimplantaria y los tratamientos existentes descritos en la literatura. Material y método: Revisión bibliográfica de las enfermedades periimplantarias, basada en una búsqueda en bases de datos Pubmed, Medline y Cochrane Library, utilizando como palabras clave "periimplantitis, mucositis, tabaquism, oral microbiota, occlusal overload, surgical treatment, antimicrobial therapy, detoxification, regenerative therapy, bone defects". Desarrollo y discusión: Análisis de los factores de riesgo, el diagnóstico y el tratamiento de las enfermedades periimplantarias. Conclusiones: Los factores como el tabaco o una historia de periodontitis, junto con una mala higiene oral, son las principales causas de las enfermedades periimplantarias. Un correcto diagnóstico de la etiología, así como, la adecuada elección de la terapéutica, pueden detener el avance de la enfermedad periimplantaria. Tras el tratamiento realizado, será muy importante el control periódico y el mantenimiento de una correcta higiene oral (AU)

Introduction: The aim of this paper is to deepen the knowledge of peri-implant disease and existing treatments described in the literature. Material and methods: Literature review of peri-implant disease based on a search in databases like PubMed and Medline using keywords "periimplantitis, mucositis, tabaquism, oral microbiota, occlusal overload, surgical treatment, antimicrobial therapy, detoxification, regenerative therapy, bone defects". Development and discussion: Analysis of risk factors, diagnosis and treatment of peri-implant disease. Conclusions: Factors such as tabaquism or a history of periodontitis, along with poor oral hygiene are the main causes of peri-implant disease. A correct diagnosis of the cause and the appropriate choice of therapy may stop the progression of peri-implant disease. Following treatment done, it will be very important to do the periodic controls and maintenance of proper oral hygiene (AU)

La ventilación ajustada neuralmente es eficaz en el destete y la extubación del recién nacido prematuro / Successful weaning and extubation in the premature newborn using neurally adjusted ventilatory assist

La asistencia respiratoria al recién nacido prematuro puede asociarse a complicaciones locales y sistémicas producto del traumatismo mecánico a los tejidos y la respuesta inflamatoria que en ellos se desencadena. Un objetivo fundamental, por tanto, es reducir su duración y efectos adversos. La ventilación ajustada neuralmente (NAVA), al mejorar la sincronización entre paciente y máquina, y optimizar los volúmenes de gas entregados a las necesidades de aquel, podría ser una herramienta fundamental en la consecución de dicho objetivo. Presentamos 2 casos de pacientes prematuros con síndrome de distrés respiratorio grave que pudieron ser satisfactoriamente destetados y extubados con esta modalidad asistencial. Nuevos estudios son necesarios para evaluar si los beneficios inmediatos se reflejan en mejores resultados a largo plazo

Invasive and non-invasive ventilation of the preterm newborn may be associated with local and systemic complications due to mechanical trauma to lung tissues and their inflammatory response. A key objective of any type of mechanical ventilation, therefore, is to reduce its duration and the side effects related to it. Neurally Adjusted Ventilatory Assist (NAVA) may improve synchronization between patient and ventilator and optimize the gas volume delivered to the lungs, according to the patient needs, eventually reducing volu- and biotrauma. Two preterm babies with severe respiratory distress syndrome are presented, who were successfully weaned and extubated with the help of this ventilatory system. Further studies are needed to assess whether short-term benefits are reflected in better outcomes in the long run

[Successful weaning and extubation in the premature newborn using neurally adjusted ventilatory assist]. / La ventilación ajustada neuralmente es eficaz en el destete y la extubación del recién nacido prematuro.

Invasive and non-invasive ventilation of the preterm newborn may be associated with local and systemic complications due to mechanical trauma to lung tissues and their inflammatory response. A key objective of any type of mechanical ventilation, therefore, is to reduce its duration and the side effects related to it. Neurally Adjusted Ventilatory Assist (NAVA) may improve synchronization between patient and ventilator and optimize the gas volume delivered to the lungs, according to the patient needs, eventually reducing volu- and biotrauma. Two preterm babies with severe respiratory distress syndrome are presented, who were successfully weaned and extubated with the help of this ventilatory system. Further studies are needed to assess whether short-term benefits are reflected in better outcomes in the long run.

Characterization of functional, safety, and gut survival related characteristics of Lactobacillus strains isolated from farmhouse goat's milk cheeses.

A set of 80 Lactobacillus strains (36 Lactobacillus plantarum and 44 Lactobacillus paracasei) isolated from Spanish farmhouse cheeses have been studied as to their functional and safety properties and their survival under gut-related conditions. None of these 80 Lactobacillus strains were able to hydrolyse starch. A high percentage of L. plantarum and L. paracasei strains were, however, capable of hydrolysing casein (86.1% and 68.2% respectively). For the other characteristics investigated, L. plantarum strains generally had more positive responses than L. paracasei. The latter strains tested negative for most of these characteristics, with the exception of stachyose hydrolysis, which was positive in six strains of L. paracasei. A high percentage (91.7%) of L. plantarum produced haemo-dependent catalase. Phytase was present in 10 L. plantarum and in 2 L. paracasei. Most L. plantarum (83.3%) but no L. paracasei hydrolysed bile salts. All strains were completely resistant to a challenge of pH3, but many showed a loss of viability after a subsequent exposure to 0.3% oxgall; in fact, only one L. paracasei strain and 33 L. plantarum strains (91.67%) were tolerant to both stresses. L. plantarum Mb25 and L. plantarum Mb26 were the most adherent to Caco-2 cells (adherence percentages of 36 and 7% respectively). These two strains were also the most adherent to HeLa 229 cells, with 19.3 and 16.0% adhesion respectively. The Mb26 strain inhibited the adhesion of Listeria monocytogenes to Caco-2 cells when added simultaneously to Listeria and also when added 1h before the pathogen (21.0% and 51.6% adhesion inhibition, respectively). Production of H2O2 was detected in 38.9% of L. plantarum strains and in 9.1% of L. paracasei. Twelve L. plantarum and eight L. paracasei strains produced bacteriocin-like inhibitors. PCR amplifications of several plantaricin genes suggest that all the bacteriocinogenic strains may produce plantaricin E/F and some may also manufacture the plantaricin J/K. The nine L. plantarum strains assayed for antibiotic resistance were resistant to ciprofloxacin (MIC>2 µg/ml), vancomycin (MIC>16 µg/ml), and teicoplanin (MIC>16 µg/ml). Moreover, some strains showed intermediate resistance to penicillin, tetracycline, rifampicin, and levofloxacin. We conclude that farmhouse cheeses are good sources of biotechnologically relevant lactobacilli and that the L. plantarum species shows better biotechnological properties than L. paracasei. This can be deduced from the finding of a high percentage of strains of L. plantarum that exhibit remarkable functional and inhibitory properties and high abilities to survive in gut-related conditions, which can be further developed for biotechnological applications.

Characterization of functional, safety, and probiotic properties of Enterococcus faecalis UGRA10, a new AS-48-producer strain.

Enterococcus faecalis UGRA10, a new AS-48-producer strain, has been isolated from a Spanish sheep's cheese. The inhibitory substance produced by E. faecalis UGRA10 was purified and characterized using matrix-assisted laser desorption ionization-time of flight mass spectrometry, confirming its identity with AS-48 enterocin (7.150 Da). Subsequent genetic analysis showed the existence of the as-48 gene cluster on a plasmid of approximately 70-kb. The UGRA10 strain was examined for safety properties such as enterococci virulence genes, biogenic amine production, and antibiotic resistance. As for most E. faecalis strains, PCR amplification revealed the existence of gene encoding for GelE, Asa1, Esp, EfaA, and Ace antigens and for tyrosine decarboxylase. This strain was sensitive to most of the antibiotics tested, being resistant only to aminoglycosides, lincosamide, and pristinamicins. In addition, UGRA10 developed an ability to form biofilms and to adhere to Caco 2 and HeLa 229 cells. More interestingly, this strain shows a high ability to interfere with the adhesion of Listeria monocytogenes to Caco 2 cells. Altogether, the results suggest that this broad-spectrum bacteriocin-producing strain has biotechnological potential to be developed as a protective agent in food preservation and as a probiotic.