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OBJECTIVE: To determine the effects of short bouts of ergometric exercises on the number of days in the burn intensive care unit (ICU), body mass, and functional ambulation. DESIGN: Multi-center, randomized controlled trial. SETTING: Burn intensive care unit. PARTICIPANTS: Children ages 7-17 with severe burns covering over 30% total body surface area (TBSA). INTERVENTION: All patients received standard of care (Control) with the experimental group receiving additional exercise with a cycle ergometer (Exercise). MAIN MEASURES: The number of days in the ICU, total weight, lean body mass (LBM), and functional ambulation were taken shortly after randomization and again within one week of the scheduled hospital discharge. Results of outcomes are expressed as median ± interquartile range (IQR), unless otherwise noted (e.g. demographics). RESULTS: Fifty-four severely burned children (n = 18 Control, n = 36 Exercise) were included. The average ± standard deviation for age was 12 ± 3 years and TBSA was 48 ± 16%. The median ± IQR ICU days for Control was 46 ± 51 days vs 31 ± 29 days for Exercise. The median total weight loss for Control was 2.2 ± 1.2â kg vs 1.8 ± 1.4â kg in Exercise. Control lost 0.75 ± 0.8â kg of LBM vs 0.46 ± 0.43â kg in Exercise. Both groups showed significant improvement in functional ambulation (p < 0.01). However, exercise did not add additional benefits. CONCLUSION: Short bouts of ergometric exercises are feasible for severely burned patients while receiving care in the ICU but did not add additional benefits.
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Ejercicio Físico , Fuerza Muscular , Adolescente , Niño , Cuidados Críticos , Terapia por Ejercicio , Humanos , Unidades de Cuidados IntensivosRESUMEN
ABSTRACT: Management of the metabolic responses to severe burn injury is recognized as a fundamental part of burn care. Definition of burn hypermetabolism is being refined to subcellular and genomic levels, and treatment concepts are need to be refined into increasingly sophisticated strategies.
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Quemaduras , Quemaduras/metabolismo , Quemaduras/terapia , HumanosRESUMEN
Vector-borne pathogens commonly establish multistrain infections, also called complex infections. How complex infections are established, either before or after the development of an adaptive immune response, termed coinfection or superinfection, respectively, has broad implications for the maintenance of genetic diversity, pathogen phenotype, epidemiology, and disease control strategies. Anaplasma marginale, a genetically diverse, obligate, intracellular, tick-borne bacterial pathogen of cattle, commonly establishes complex infections, particularly in regions with high transmission rates. Both coinfection and superinfection can be established experimentally; however, it is unknown how complex infections develop in a natural transmission setting. To address this question, we introduced naive animals into a herd in southern Ghana with a high infection prevalence and high transmission pressure and tracked the strain acquisition of A. marginale through time using multilocus sequence typing. As expected, the genetic diversity among strains was high, and 97% of animals in the herd harbored multiple strains. All the introduced naive animals became infected, and three to four strains were typically detected in an individual animal prior to seroconversion, while one to two new strains were detected in an individual animal following seroconversion. On average, the number of strains acquired via superinfection was 16% lower than the number acquired via coinfection. Thus, while complex infections develop via both coinfection and superinfection, coinfection predominates in this setting. These findings have broad implications for the development of control strategies in high-transmission settings.
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Anaplasma marginale/genética , Anaplasmosis/microbiología , Coinfección/microbiología , Sobreinfección/microbiología , Alelos , Anaplasmosis/etiología , Anaplasmosis/transmisión , Animales , Bovinos , Coinfección/etiología , Sobreinfección/etiologíaRESUMEN
OBJECTIVE: To compare the effects of long-term psychosocial functioning and mental health of a "day hospital"-based exercise program (DAYEX) versus a community-based exercise program (COMBEX). DESIGN: A prospective design that consisted of 2 groups (DAYEX and COMBEX). SETTING: A children's hospital specialized in burn care. PARTICIPANTS: Patients (N=18; DAYEX [n=9], COMBEX [n=9]) were assessed at intensive care unit discharge and up to 1 year postburn. INTERVENTIONS: The Child Health Questionnaires (CHQ-Child Form [CHQ-CF87] and CHQ-Parent Form [CHQ-PF28]) were used to assess changes in quality of life from discharge to 1 year postburn. MAIN OUTCOME MEASURES: CHQ-PF28 and CHQ-CF87. RESULTS: Demographic characteristics and total body surface area burned were similar in both groups. Length of hospital stay was significant in the COMBEX group. CHQ-CF87 and CHQ-PF28 documented significant improvements in both groups between discharge and 1 year. Significance was evident in Physical Functioning, Bodily Pain, Self-Esteem, Change in Health, and Family Activities. CHQ-CF87 showed improvement in Family Cohesion in COMBEX more than DAYEX. CHQ-PF28 showed improvement in Role/Social Limitations-Emotional, Bodily Pain, and Family Activities in COMBEX more than DAYEX. CONCLUSIONS: The proposed COMBEX program is feasible and beneficial physically, psychosocially, and mentally. The results show some improvements in the COMBEX group in optimizing function and health in severely burned children. The COMBEX group performed at least as well as the DAYEX group. Larger-scale studies are needed to validate current findings.
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Quemaduras/psicología , Quemaduras/rehabilitación , Terapia por Ejercicio/métodos , Salud Mental , Calidad de Vida , Adolescente , Niño , Servicios de Salud Comunitaria/organización & administración , Evaluación de la Discapacidad , Femenino , Estado de Salud , Humanos , Masculino , Estudios Prospectivos , Factores Socioeconómicos , Índices de Gravedad del TraumaRESUMEN
The Burn Model System (BMS) centers program was created in 1994 to evaluate the long-term outcomes of burn injuries. As part of this multicenter program, a comprehensive longitudinal database was developed to facilitate the study of a number of functional and psychosocial outcomes after burn injury. In this article, we provide an overview of the data collection procedures, measures selection process, and an overview of the participant data collected between 1994 and 2016. Surveys were administered during hospitalization and at 6, 12, and 24 months after discharge, and in the most recent funding cycle, data collection at every 5 years postinjury was added. More than 7200 people with burn injury were eligible to participate in the BMS National Longitudinal Database. Of these, >5900 (82%) were alive at discharge and consented to follow-up data collection. The BMS National Longitudinal Database represents a large sample of people with burn injury, including information on demographic characteristics, injury characteristics, and health outcomes. The database is publicly available and can be used to examine the effect of burn injury on long-term outcomes.
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Quemaduras/psicología , Quemaduras/rehabilitación , Investigación en Rehabilitación/organización & administración , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Recolección de Datos/métodos , Manejo de Datos/organización & administración , Evaluación de la Discapacidad , Personas con Discapacidad/rehabilitación , Femenino , Humanos , Lactante , Entrevistas como Asunto , Estudios Longitudinales , Masculino , Salud Mental , Persona de Mediana Edad , Calidad de Vida , Factores de Riesgo , Autoinforme , Factores Socioeconómicos , Índices de Gravedad del Trauma , Adulto JovenRESUMEN
OBJECTIVE: To investigate the efficacy of community-based exercise programs in the rehabilitation of adult patients with burns compared with standard of care (SOC). DESIGN: Randomized controlled trial, with 2:1 randomization. SETTING: Assessments were performed in a hospital setting. The intervention was performed in a community setting. PARTICIPANTS: Adult patients (N=45) with ≥30% total body surface area burns were randomized to participate in a community-based exercise program (n=31) or SOC (n=14). Patient sampling was consecutive and referred. INTERVENTIONS: The community-based exercise program consisted of 12 weeks of exercise with a community-based trainer after hospital discharge. The SOC group did not receive exercise training. MAIN OUTCOME MEASURES: Change in lean body mass index, peak torque, and peak oxygen consumption from discharge to 12 weeks postdischarge, presented as mean ± SE. RESULTS: The community-based exercise program group showed a significant increase in peak oxygen consumption compared with SOC (community-based exercise program: Δ=7.723±1.522mL/kg/min, P=.0006; SOC: Δ=2.200±1.150mL/kg/min, P=.0765; community-based exercise program vs SOC, P=.0236). The community-based exercise program group exhibited a significant within group increase in lean body mass index (Δ=1.107±0.431kg/m2, P=.0003; SOC: Δ=1.323±0.873kg/m2, P=.2808). Both groups showed significant within-group increases in peak torque (community-based exercise program: Δ=35.645±7.566Nm, P=.0003; SOC: Δ=34.717±11.029Nm, P=.0082). No significant differences were noted between the 2 groups for lean body mass index or peak torque. CONCLUSIONS: Patients who participate in a community-based exercise program show significant improvements in cardiopulmonary fitness compared with SOC, supporting the use of a community-based exercise program as an alternative therapy to SOC in adults with severe burns.
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Composición Corporal/fisiología , Quemaduras/rehabilitación , Capacidad Cardiovascular/fisiología , Terapia por Ejercicio/métodos , Adolescente , Adulto , Índice de Masa Corporal , Servicios de Salud Comunitaria , Prueba de Esfuerzo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Fuerza Muscular/fisiología , Músculo Esquelético/fisiología , Consumo de Oxígeno/fisiología , Estudios Prospectivos , Factores Socioeconómicos , Índices de Gravedad del Trauma , Adulto JovenRESUMEN
BACKGROUND: The lack of a clinically relevant animal model for facial nerve research is a challenge. The goal of this study was to investigate the anatomy of the ovine facial and hypoglossal nerves to establish a clinically relevant facial nerve research model. MATERIALS AND METHODS: Six cadaver female Merino sheep (33.5 ± 3 kg, approximately 3 years old) and three anesthetized female Merino sheep (30 ± 3 kg, approximately 3 years old) were used. In cadaver sheep, a right side preauricular to submandibular incision was made. Dimensions of the face, neck, and length of facial nerve were measured. In anesthetized sheep, each facial nerve branch and hypoglossal nerve in the right side was stimulated. The number of myelinated fibers was analyzed histologically. RESULTS: The facial nerve exited the stylomastoid foramen and divided into upper and lower branches. The lower branch then subdivided into buccal and marginal mandibular branches. The hypoglossal nerve was observed behind the digastric posterior belly. Stimulation revealed the temporal, zygomatic, buccal, marginal mandibular, and cervical branch innervated the forehead, orbicularis, upper lip and nasal, lower lip, and platysma, respectively. The number of myelinated fibers of the main trunk, upper, buccal, lower branch, and hypoglossal nerve was 11 350 ± 1851, 4766 ± 1000, 5107 ± 218, 3159 ± 450, and 7604 ± 636, respectively. The length of the main trunk was 9.2 ± 1.5 mm, and distance of the marginal mandibular branch to the facial artery was 94 ± 6.8 mm. CONCLUSIONS: Due to the similarity in nerve anatomy and innervation, the ovine model can be used as a clinically relevant and suitable model for facial nerve research.
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Nervio Facial/anatomía & histología , Nervio Facial/cirugía , Nervio Hipogloso/anatomía & histología , Nervio Hipogloso/cirugía , Animales , Cadáver , Femenino , Modelos Animales , Regeneración Nerviosa , Procedimientos Neuroquirúrgicos , Procedimientos de Cirugía Plástica , Medicina Regenerativa , OvinosRESUMEN
Hypertrophic scars (HS) limit movement, decrease quality of life, and remain a major impediment to rehabilitation from burns. However, no effective pharmacologic therapies for HS exist. Here we tested the in vitro anti-fibrotic effects of the novel chemical N-(2-aminoethyl) ethanolamine (AEEA) at non-toxic concentrations. Scanning electron microscopy showed that AEEA markedly altered the structure of the extracellular matrix (ECM) produced by primary dermal fibroblasts isolated from a HS of a burn patient (HTS). Compression atomic force microscopy revealed that AEEA stiffened the 3D nanostructure of ECM formed by HTS fibroblasts. Western blot analysis in three separate types of primary human dermal fibroblasts (including HTS) showed that AEEA exposure increased the extractability of type I collagen in a dose- and time-dependent fashion, while not increasing collagen synthesis. A comparison of the electrophoretic behavior of the same set of samples under native and denaturing conditions suggested that AEEA alters the 3D structure of type I collagen. The antagonization effect of AEEA to TGF-ß1 on ECM formation was also observed. Furthermore, analyses of the anti-fibrotic effects of analogs of AEEA (with modified pharmacophores) suggest the existence of a chemical structure-activity relationship. Thus, AEEA and its analogs may inhibit HS development; further study and optimization of analogs may be a promising strategy for the discovery for effective HS therapies.
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Cicatriz Hipertrófica/tratamiento farmacológico , Etanolaminas/farmacología , Fibroblastos/efectos de los fármacos , Línea Celular , Cicatriz Hipertrófica/metabolismo , Colágeno/metabolismo , Matriz Extracelular/efectos de los fármacos , Fibroblastos/metabolismo , Fibrosis , Humanos , Relación Estructura-Actividad , Factor de Crecimiento Transformador beta1/metabolismoRESUMEN
OBJECTIVE: To examine differences in long-term employment outcomes in the postacute care setting. DESIGN: Retrospective review of the prospectively collected Burn Model System National Database. SETTING AND PARTICIPANTS: A total of 695 adult survivors of burn injury enrolled between May 1994 and June 2016 who required postacute care at a Burn Model System center following acute care discharge were included. Participants were divided into 2 groups based on acute care discharge disposition. Those who received postacute care at an inpatient rehabilitation facility (IRF) following acute care were included in the IRF group (N=447), and those who were treated at a skilled nursing facility, long-term care hospital, or other extended-care facility following acute care were included in the Other Rehab group (N=248). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Employment status at 12 months postinjury. Propensity score matching and logistic regression were utilized to determine the effect of postacute care setting on employment status. RESULTS: Individuals in the IRF group had larger burns and were more likely to have an inhalation injury and to undergo amputation. At 12 months postinjury, the IRF group had over 9 times increased odds of being employed compared to the Other Rehab group, using propensity score matching (P=.046). CONCLUSIONS: While admitting patients with more severe injuries, IRFs provided a long-term benefit for survivors of burn injury in terms of regaining employment. Given the current lack of evidence-based guidelines on postacute care decisions, the results of this study shed light on the potential benefits of the intensive services provided at IRFs in this population.
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Quemaduras/rehabilitación , Empleo/estadística & datos numéricos , Centros de Rehabilitación/organización & administración , Centros de Rehabilitación/estadística & datos numéricos , Atención Subaguda/organización & administración , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Alta del Paciente/estadística & datos numéricos , Estudios Retrospectivos , Instituciones de Cuidados Especializados de Enfermería/organización & administración , Instituciones de Cuidados Especializados de Enfermería/estadística & datos numéricos , Factores Socioeconómicos , Índices de Gravedad del TraumaRESUMEN
OBJECTIVE: Common data elements (CDEs) promote data sharing, standardization, and uniform data collection, which facilitate meta-analyses and comparisons of studies. Currently, there is no set of CDEs for all trauma populations, but their creation would allow researchers to leverage existing databases to maximize research on trauma outcomes. The purpose of this study is to assess the extent of common data collection among 5 trauma databases. DESIGN: The data dictionaries of 5 trauma databases were examined to determine the extent of common data collection. Databases included 2 acute care databases (American Burn Association's National Burn Data Standard and American College of Surgeons' National Trauma Data Standard) and 3 longitudinal trauma databases (Burn, Traumatic Brain Injury, Spinal Cord Injury Model System National Databases). Data elements and data values were compared across the databases. Quantitative and qualitative variations in the data were identified to highlight meaningful differences between datasets. SETTING: N/A. PARTICIPANTS: N/A. INTERVENTIONS: N/A. MAIN OUTCOME MEASURES: N/A. RESULTS: Of the 30 data elements examined, 14 (47%) were present in all 5 databases. Another 9 (30%) elements were present in 4 of the 5 databases. The number of elements present in each database ranged from 23 (77%) to 26 (86%). There were inconsistencies in the data values across the databases. Twelve of the 14 data elements present in all 5 databases exhibited differences in data values. CONCLUSIONS: This study demonstrates inconsistencies in the documentation of data elements in 5 common trauma databases. These discrepancies are a barrier to database harmonization and to maximizing the use of these databases through linking, pooling, and comparing data. A collaborative effort is required to develop a standardized set of elements for trauma research.
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Elementos de Datos Comunes/normas , Bases de Datos Factuales/normas , Heridas y Lesiones/terapia , Lesiones Traumáticas del Encéfalo/terapia , Quemaduras/terapia , Estudios de Factibilidad , Humanos , Cuidados a Largo Plazo , Traumatismos de la Médula Espinal/terapia , Terminología como Asunto , Factores de Tiempo , Resultado del Tratamiento , Estados UnidosRESUMEN
Pathologic extraskeletal bone formation, or heterotopic ossification (HO), occurs following mechanical trauma, burns, orthopedic operations, and in patients with hyperactivating mutations of the type I bone morphogenetic protein receptor ACVR1 (Activin type 1 receptor). Extraskeletal bone forms through an endochondral process with a cartilage intermediary prompting the hypothesis that hypoxic signaling present during cartilage formation drives HO development and that HO precursor cells derive from a mesenchymal lineage as defined by Paired related homeobox 1 (Prx). Here we demonstrate that Hypoxia inducible factor-1α (Hif1α), a key mediator of cellular adaptation to hypoxia, is highly expressed and active in three separate mouse models: trauma-induced, genetic, and a hybrid model of genetic and trauma-induced HO. In each of these models, Hif1α expression coincides with the expression of master transcription factor of cartilage, Sox9 [(sex determining region Y)-box 9]. Pharmacologic inhibition of Hif1α using PX-478 or rapamycin significantly decreased or inhibited extraskeletal bone formation. Importantly, de novo soft-tissue HO was eliminated or significantly diminished in treated mice. Lineage-tracing mice demonstrate that cells forming HO belong to the Prx lineage. Burn/tenotomy performed in lineage-specific Hif1α knockout mice (Prx-Cre/Hif1α(fl:fl)) resulted in substantially decreased HO, and again lack of de novo soft-tissue HO. Genetic loss of Hif1α in mesenchymal cells marked by Prx-cre prevents the formation of the mesenchymal condensations as shown by routine histology and immunostaining for Sox9 and PDGFRα. Pharmacologic inhibition of Hif1α had a similar effect on mesenchymal condensation development. Our findings indicate that Hif1α represents a promising target to prevent and treat pathologic extraskeletal bone.
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Subunidad alfa del Factor 1 Inducible por Hipoxia/antagonistas & inhibidores , Osificación Heterotópica/genética , Osificación Heterotópica/prevención & control , Heridas y Lesiones/complicaciones , Receptores de Activinas Tipo I/metabolismo , Tejido Adiposo/efectos de los fármacos , Tejido Adiposo/metabolismo , Animales , Quemaduras/complicaciones , Quemaduras/genética , Condrogénesis/efectos de los fármacos , Condrogénesis/genética , Modelos Animales de Enfermedad , Redes Reguladoras de Genes/efectos de los fármacos , Humanos , Subunidad alfa del Factor 1 Inducible por Hipoxia/genética , Subunidad alfa del Factor 1 Inducible por Hipoxia/metabolismo , Integrasas/metabolismo , Mediciones Luminiscentes , Células Madre Mesenquimatosas/efectos de los fármacos , Ratones Noqueados , Modelos Biológicos , Compuestos de Mostaza/farmacología , Osificación Heterotópica/diagnóstico por imagen , Osificación Heterotópica/tratamiento farmacológico , Fenilpropionatos/farmacología , ARN Mensajero/genética , ARN Mensajero/metabolismo , Receptor alfa de Factor de Crecimiento Derivado de Plaquetas/metabolismo , Factor de Transcripción SOX9/metabolismo , Transducción de Señal/efectos de los fármacos , Sirolimus/farmacología , Tendones/efectos de los fármacos , Tendones/patología , Tendones/cirugía , Tenotomía , Regulación hacia Arriba/efectos de los fármacos , Cicatrización de Heridas/efectos de los fármacos , Heridas y Lesiones/patología , Microtomografía por Rayos XRESUMEN
INTRODUCTION: Postburn scarring is common, but the risk factors, natural history, and consequences of such scars are still poorly understood. This study aims to describe the frequency of scar-related morbidity for up to 2 years after injury and to analyze the impact of burn scars on long-term functional, psychosocial, and reintegration outcomes. METHODS: Analysis was conducted on data collected between January 2006 and May 2014 from 960 patients (2440 anatomic burn sites) using the Burn Model System (BMS) database. Study population demographics were analyzed and odds ratios for the development of raised or thick scarring were determined. Regression analyses were used to evaluate the impact of hypertrophic scarring (HTS) on psychosocial outcomes, including the Community Integration Questionnaire, Satisfaction with Life Scale, Distress, and the Short Form 12. Symptoms associated with scarring were analyzed at discharge and 6, 12, and 24 months after burn using a set of questions on scarring developed by the BMS. Mixed-effect modeling was used to determine linear change over time and the significance of symptoms. RESULTS: The study population was primarily white (65.0%) and male (71.8%), with a mean (SD) age of 44.0 (15.2) years and mean total body surface area burned of 19.6% (17.9%). The incidence of raised or thick scars increased from 65% to 80% (P < 0.0001) for the 2-year follow-up period. The presence of scarring was not associated with Community Integration Questionnaire, Satisfaction with Life Scale, or Short Form 12 scores. Most patients reported symptoms associated with scarring at 2 years after burn, including dry or fragile skin, scars that restrict range of motion at a joint, issues with hand function, and scar pain and itch. CONCLUSIONS: In this large, longitudinal, multicenter cohort of burn survivors, nearly all patients noted the presence of scarring, and a majority noted additional symptoms and morbidity related to their scars even at 2 years after injury. This study demonstrates a need for the continued support of burn survivors to address scar-related morbidity. Furthermore, future studies examining the impact of novel treatments for scarring should use similar scar problem questionnaires and distress scores.
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Quemaduras/complicaciones , Quemaduras/terapia , Cicatriz Hipertrófica/etiología , Cicatriz Hipertrófica/terapia , Terapia Combinada/métodos , Calidad de Vida , Adulto , Quemaduras/diagnóstico , Cicatriz Hipertrófica/fisiopatología , Estudios de Cohortes , Bases de Datos Factuales , Evaluación de la Discapacidad , Estudios de Seguimiento , Humanos , Puntaje de Gravedad del Traumatismo , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Morbilidad , Dolor/etiología , Dolor/fisiopatología , Manejo del Dolor/métodos , Medición de Resultados Informados por el Paciente , Análisis de Regresión , Reoperación/métodos , Estudios Retrospectivos , Medición de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Cicatrización de Heridas/fisiología , Adulto JovenRESUMEN
Severely burned children experience a chronic state of sympathetic nervous system activation that is associated with hypermetabolic/cardiac stress and muscle wasting. Metformin, a diabetes medication, helps control hyperglycemia in obese diabetic populations, and exercise has been shown to improve exercise strength and aerobic exercise capacity after severe burns. However, whether exercise improves glycemic control in burned children and whether combining exercise and metformin improves outcomes to a greater degree than exercise alone are unknown. We tested the hypothesis that a 6-wk exercise program combined with short-term metformin administration (E + M) improves aerobic and strength exercise capacity to a greater degree than exercise and placebo (E), while improving glucose tolerance and muscle metabolic function. We found that, before exercise training, the metformin group compared with the placebo group had attenuated mitochondrial respiration (pmol·s-1·mg-1) for each state: state 2 (-22.5 ± 3), state 3 (-42.4 ± 13), and oxphos (-58.9 ± 19) ( P ≤ 0.02, M vs. E + M group for each state). However, in the E + M group, exercise increased mitochondrial respiration in each state ( P ≤ 0.05), with respiration being comparable to that in the E group (each P > 0.05). In both groups, exercise induced comparable improvements in strength (change from preexercise, Δ1.6 ± 0.6 N-M·kgLBM) and VÌo2peak (Δ9 ± 7 mlO2·kgLBM) as well as fasting glucose (Δ19.3 ± 13 mg·dl) and glucose AUC (Δ3402 ± 3674 mg·dl-1·min-1), as measured by a 75-g OGTT (all P ≤ 0.03). Exercise reduced resting energy expenditure in E + M (Δ539 ± 480 kcal/24 h, P < 0.01) but not E subjects ( P = 0.68). Both groups exhibited reduced resting heart rate (Δ30 ± 23 beats/min, P ≤ 0.02). These data indicate that short-term metformin combined with exercise provides no further improvement beyond that of exercise alone for strength, exercise capacity, and glycemic control.
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Glucemia/efectos de los fármacos , Quemaduras/metabolismo , Ejercicio Físico/fisiología , Metformina/administración & dosificación , Mitocondrias Musculares/efectos de los fármacos , Fuerza Muscular/efectos de los fármacos , Consumo de Oxígeno/efectos de los fármacos , Adolescente , Glucemia/metabolismo , Quemaduras/rehabilitación , Niño , Esquema de Medicación , Metabolismo Energético/efectos de los fármacos , Terapia por Ejercicio , Tolerancia al Ejercicio/efectos de los fármacos , Femenino , Humanos , Masculino , Mitocondrias Musculares/fisiología , Factores de TiempoRESUMEN
Elucidating the emergence of Mycoplasma ovipneumoniae-associated respiratory disease in ruminants requires identification of the pathogen host range. This bacterium was thought to be host restricted to subfamily Caprinae, but we describe its identification in healthy moose, caribou, and mule deer and diseased mule and white-tailed deer, all species in subfamily Capreolinae.
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Enfermedades de los Animales/microbiología , Animales Salvajes , Mycoplasma ovipneumoniae , Neumonía por Mycoplasma/veterinaria , Enfermedades de los Animales/diagnóstico , Animales , Ciervos , RenoRESUMEN
BACKGROUND: Massive burns induce a hypermetabolic response that leads to total body wasting and impaired physical and psychosocial recovery. The administration of propranolol or oxandrolone positively affects postburn metabolism and growth. The combined administration of oxandrolone and propranolol (OxProp) for 1 year restores growth in children with large burns. Here, we investigated whether the combined administration of OxProp for 1 year would reduce scarring and improve quality of life compared with control. STUDY DESIGN: Children with large burns (n = 480) were enrolled into this institutional review board-approved study; patients were randomized to control (n = 226) or administration of OxProp (n = 126) for 1 year postburn. Assessments were conducted at discharge and 6, 12, and 24 months postburn. Scar biopsies were obtained for histology. Physical scar assessments and patient reported outcome measures of physical and psychosocial function were obtained. RESULTS: Reductions in cellularity, vascular structures, inflammation, and abnormal collagen (P < 0.05) occurred in OxProp-treated scars. With OxProp, scar severity was attenuated and pliability increased (both P < 0.05). Analyses of patient-reported outcomes showed improved general and emotional health within the OxProp-treated group (P < 0.05). CONCLUSIONS: Here, we have shown improvements in objective and subjective measures of scarring and an increase in overall patient-reported physical function. The combined administration of OxProp for up to a year after burn injury should be considered for the reduction of postburn scarring and improvement of long-term psychosocial outcomes in children with massive burns.
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Anabolizantes/uso terapéutico , Quemaduras/complicaciones , Cicatriz Hipertrófica/etiología , Cicatriz Hipertrófica/prevención & control , Oxandrolona/uso terapéutico , Propranolol/uso terapéutico , Vasodilatadores/uso terapéutico , Adolescente , Anabolizantes/administración & dosificación , Biomarcadores/metabolismo , Biopsia , Niño , Cicatriz Hipertrófica/metabolismo , Método Doble Ciego , Esquema de Medicación , Combinación de Medicamentos , Femenino , Humanos , Técnicas para Inmunoenzimas , Masculino , Oxandrolona/administración & dosificación , Propranolol/administración & dosificación , Estudios Prospectivos , Calidad de Vida , Recuperación de la Función , Resultado del Tratamiento , Vasodilatadores/administración & dosificaciónRESUMEN
: There is an unacceptably high burden of death and disability from conditions that are treatable by surgery, worldwide and especially in low- and middle-income countries (LMICs). The major actions to improve this situation need to be taken by the surgical communities, institutions, and governments of the LMICs. The US surgical community, including the US academic surgical community, has, however, important roles to play in addressing this problem. The American Surgical Association convened a Working Group to address how US academic surgery can most effectively decrease the burden from surgically treatable conditions in LMICs. The Working Group believes that the task will be most successful (1) if the epidemiologic pattern in a given country is taken into account by focusing on those surgically treatable conditions with the highest burdens; (2) if emphasis is placed on those surgical services that are most cost-effective and most feasible to scale up; and (3) if efforts are harmonized with local priorities and with existing global initiatives, such as the World Health Assembly with its 2015 resolution on essential surgery. This consensus statement gives recommendations on how to achieve those goals through the tools of academic surgery: clinical care, training and capacity building, research, and advocacy. Through all of these, the ethical principles of maximally and transparently engaging with and deferring to the interests and needs of local surgeons and their patients are of paramount importance. Notable benefits accrue to US surgeons, trainees, and institutions that engage in global surgical activities.
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Países en Desarrollo , Salud Global , Necesidades y Demandas de Servicios de Salud , Rol del Médico , Procedimientos Quirúrgicos Operativos , Consenso , Humanos , Estados UnidosRESUMEN
OBJECTIVES: To compare physical capacity and body composition between children with burn injuries at approximately 4 years postburn and healthy, fit children. STUDY DESIGN: In this retrospective, case-control study, we analyzed the strength, aerobic capacity, and body composition of children with severe burn injuries (n = 40) at discharge, after completion of a 6- to 12-week rehabilitative exercise training program, and at 3-4 years postburn. Values were expressed as a relative percentage of those in age- and sex-matched children for comparison (n = 40 for discharge and postexercise; n = 40 for 3.5 years postburn). RESULTS: At discharge, lean body mass was 89% of that in children without burn injuries, and exercise rehabilitation restored this to 94% (P < .01). At 3.5 years postburn, lean body mass (94%), bone mineral content (89%), and bone mineral density (93%; each P ≤ .02) remained reduced, whereas total body fat was increased (148%, P = .01). Cardiorespiratory fitness remained lower in children with burn injuries both after exercise training (75%; P < .0001) and 3.5 years later (87%; P < .001). Peak torque (60%; P < .0001) and average power output (58%; P < .0001) were lower after discharge. Although exercise training improved these, they failed to reach levels achieved in healthy children without burns (83-84%; P < .0001) but were maintained at 85% and 82%, respectively, 3.5 years later (P < .0001). CONCLUSIONS: Although the benefits of rehabilitative exercise training on strength and cardiorespiratory capacity are maintained at almost 4 years postburn, they are not restored fully to the levels of healthy children. Although the underlying mechanism of this phenomenon remains elusive, these findings suggest that future development of continuous exercise rehabilitation interventions after discharge may further narrow the gap in relation to healthy adolescents.
Asunto(s)
Composición Corporal , Quemaduras/fisiopatología , Quemaduras/rehabilitación , Capacidad Cardiovascular , Terapia por Ejercicio/métodos , Tolerancia al Ejercicio , Fuerza Muscular , Adolescente , Estudios de Casos y Controles , Niño , Femenino , Estudios de Seguimiento , Humanos , Masculino , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
BACKGROUND: It has been previously shown that anesthesia and analgesia can affect outcomes in the rat burn model and that buprenorphine alleviated pain without drastically altering the outcomes of interest. Recently, the use of a sustained release (SR) formulation of buprenorphine has been promoted over conventional buprenorphine. In this study, we assessed whether buprenorphine-SR altered hemodynamic parameters in our rat model of severe burn injury. MATERIALS AND METHODS: Adult male Sprague-Dawley rats were randomized to receive either conventional buprenorphine (0.05 mg/kg) or buprenorphine-SR (1 mg/kg). Buprenorphine-SR was administered 24 h before the experiment. Buprenorphine was administered on the day of experiment. These groups were further randomized to control or scald burn (60% of total body surface area). Systolic and diastolic blood pressure (SBP, DBP) and heart rate (HR) were measured using a noninvasive blood pressure system before receiving analgesia and after 72 h. RESULTS: As expected, HR was significantly higher after burn injury regardless of analgesic (P <0.0001). Both SBP and DBP were significantly decreased in burned animals receiving conventional buprenorphine (P < 0.0001), but neither was altered in the buprenorphine-SR-treated burned animals. However, SBP, DBP, and HR were significantly increased after 72 h in control animals receiving buprenorphine-SR (P < 0.0001). CONCLUSIONS: These data indicate that buprenorphine-SR alters the hemodynamic response to injury and may not be an appropriate choice for a model of severe burn injury. If this analgesic is used, investigators must cautiously form conclusions, especially in experimental conditions that would be expected to alter cardiac hemodynamics.
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Analgésicos Opioides/farmacología , Buprenorfina/farmacología , Quemaduras/fisiopatología , Hemodinámica/efectos de los fármacos , Animales , Buprenorfina/administración & dosificación , Citocinas/sangre , Preparaciones de Acción Retardada , Modelos Animales de Enfermedad , Masculino , Ratas , Ratas Sprague-DawleyRESUMEN
OBJECTIVE: To identify important sources of distress among burn survivors at discharge and 6, 12, and 24 months postinjury, and to examine if the distress related to these sources changed over time. DESIGN: Exploratory. SETTING: Outpatient burn clinics in 4 sites across the country. PARTICIPANTS: Participants who met preestablished criteria for having a major burn injury (N=1009) were enrolled in this multisite study. INTERVENTIONS: Participants were given a previously developed list of 12 sources of distress among burn survivors and asked to rate on a 10-point Likert-type scale (0=no distress to 10=high distress) how much distress each of the 12 issues was causing them at the time of each follow-up. MAIN OUTCOMES MEASURES: The Medical Outcomes Study 12-Item Short-Form Health Survey was administered at each time point as a measure of health-related quality of life. The Satisfaction With Appearance Scale was used to understand the relation between sources of distress and body image. Finally, whether a person returned to work was used to determine the effect of sources of distress on returning to employment. RESULTS: It was encouraging that no symptoms were worsening at 2 years. However, financial concerns and long recovery time are 2 of the highest means at all time points. Pain and sleep disturbance had the biggest effect on ability to return to work. CONCLUSIONS: These findings can be used to inform burn-specific interventions and to give survivors an understanding of the temporal trajectory for various causes of distress. In particular, it appears that interventions targeted at sleep disturbance and high pain levels can potentially effect distress over financial concerns by allowing a person to return to work more quickly.
Asunto(s)
Quemaduras/psicología , Reinserción al Trabajo/psicología , Estrés Psicológico/etiología , Sobrevivientes/psicología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Imagen Corporal/psicología , Quemaduras/complicaciones , Femenino , Estudios de Seguimiento , Encuestas Epidemiológicas , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Dolor/etiología , Dolor/psicología , Alta del Paciente , Calidad de Vida , Trastornos del Sueño-Vigilia/etiología , Trastornos del Sueño-Vigilia/psicología , Factores de Tiempo , Adulto JovenRESUMEN
More than 50 years ago, Shriners Hospitals for Children expanded their philanthropy to include care for burned children. In so doing, the effects of their work weightily expanded from rehabilitation and quality of life outcomes to include survival proper. As the first facility dedicated to the care of burned children, originally designated the Shriners Burn Institute, the Galveston hospital remains the cornerstone of this endeavor. Shriners maintains charitable pediatric hospitals, provide care irrespective of the patient's or the family's ability to pay, and promote research. The sole criterion for admission at Shriners Hospitals for Children is the determination by a surgeon at a Shriners hospital that "the child's trouble may be corrected or improved." This philanthropic effort to provide medical care for children is one expression of the human commonality recognized by Shriners. In this article, we provide some background information on how this hospital came into existence as well as a global summary of its interventions toward greater survival and more complete rehabilitation of burned children. Based on the findings presented herein, we assert that there is less suffering and less loss of life due to childhood burns today than in previous years. We attribute much of this improvement to the simple voluntary collective decision by Shriners to provide alms for burned children.