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1.
Appl Opt ; 63(10): A98-A105, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38568518

RESUMEN

A more complete understanding of laser-driven hohlraum plasmas is critical for the continued development and improvement of ICF experiments. In these hohlraums, self-generated electric and magnetic fields can play an important role in modifying plasma properties such as heat transport; however, the strength and distribution of electromagnetic fields in such hohlraums remain largely uncertain. To explore this question, we conducted experiments at the OMEGA laser facility, using monoenergetic proton radiography to probe laser-driven vacuum hohlraums. We then utilized reconstructive methods to recover information about proton deflections. To interpret these reconstructions, a new technique for detangling the contributions of electric and magnetic fields to proton deflections was developed. This work was supported in part by the U.S. Department of Energy, the National Laser Users' Facility, and the Laboratory for Laser Energetics.

2.
Anthropol Med ; 29(4): 383-398, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36562204

RESUMEN

This paper explores how Catholic women in Argentina use assisted reproduction technologies (ARTs), and particularly the way in which they resort to biomedicine and religion as complementary sources of knowledge, support and assistance during reproductive treatments. It is concerned about the role of the Catholic religion in local reproductive itineraries, seeing that Catholicism has such significant social, political and cultural influence in the country. Drawing on a qualitative and ethnographic study of Catholic spaces of worship, a maternity hospital and in-depth interviews with former users from three metropolitan areas in Argentina, we examine how reproductive itineraries involve the users' agency in building health resources from religion, with reference to biomedicine. The data reveal that women address religion as an affective, social and therapeutic recourse intertwined with biomedical power. These findings highlight the multiple and complex forms reproduction acquires in specific social, cultural and normative contexts, and contribute to discussing the complementarity between religion and biomedicine in health experiences.


Asunto(s)
Catolicismo , Reproducción , Femenino , Humanos , Embarazo , Catolicismo/psicología , Argentina , Antropología Médica , Tecnología
3.
J Exp Biol ; 224(Pt 2)2021 01 26.
Artículo en Inglés | MEDLINE | ID: mdl-33500325

RESUMEN

Many captive Asian elephant populations are not self-sustaining, possibly due in part to obesity-related health and reproductive issues. This study investigated relationships between estimated body composition and metabolic function, inflammatory markers, ovarian activity (females only) and physical activity levels in 44 Asian elephants (n=35 females, n=9 males). Deuterium dilution was used to measure total body water from which fat mass (FM) and fat-free mass (FFM) could be derived to estimate body composition. Serum was analyzed for progestagens and estradiol (females only), deuterium, glucose, insulin and amyloid A. Physical activity was assessed by an accelerometer placed on the elephant's front leg for at least 2 days. Relative fat mass (RFM) - the amount of fat relative to body mass - was calculated to take differences in body size between elephants into consideration. Body fat percentage ranged from 2.01% to 24.59%. Male elephants were heavier (P=0.043), with more FFM (P=0.049), but not FM (P>0.999), than females. For all elephants, estimated RFM (r=0.45, P=0.004) was positively correlated with insulin. Distance walked was negatively correlated with age (r=-0.46, P=0.007). When adjusted for FFM and age (P<0.001), non-cycling females had less fat compared with cycling females, such that for every 100 kg increase in FM, the odds of cycling were 3 times higher (P<0.001). More work is needed to determine what an unhealthy amount of fat is for elephants; however, our results suggest higher adiposity may contribute to metabolic perturbations.


Asunto(s)
Elefantes , Adiposidad , Animales , Animales de Zoológico , Composición Corporal , Femenino , Masculino , Obesidad , Reproducción
4.
J Adolesc ; 82: 67-81, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32623233

RESUMEN

INTRODUCTION: The current study highlights the voices and perspectives of African American fathers, with specific emphasis on their race-related concerns for their adolescents as well as how these concerns guide their parenting strategies. METHOD: Twenty-four African American fathers participated in 1.5-3 h long focus group interviews. All fathers (M = 42.24 years, SD = 6.93) resided in a mid-sized city in the Southeastern United States. All participants were either biological fathers (n = 20) or non-biological (n = 4) fathers. Fathers were residential (76%) and non-residential (24%), with at least one adolescent child (M = 14.32 years, SD = 5.80; Range: 10-16 years). Fifty-eight percent of fathers (n = 14) had both male and female children, 29% had only female children (n = 7) and 13% had only male children (n = 3). After codebook development and refinement, key themes were explored using a theoretical thematic analysis. RESULTS: In response to race-related and other social risks for African American adolescents, fathers articulated a number of parenting motivations and intentions: 1) fathers' own racial experiences; 2) negative media images of Black youth and families (e.g. media influences, negative stereotypes, and portrayals of Black fathers); 3) preserving families through community support; 4) developing awareness of discrimination and coping strategies; 5) cultivating positive personal and cultural identities; and 6) achievement as necessity. Also, gender emerged as a critical lens for African American fathers' concerns and parenting strategies. CONCLUSION: Overall, our investigation highlights African American fathers' own meaning-making around concerns for their adolescents as well as how they shape parenting processes.


Asunto(s)
Negro o Afroamericano/psicología , Padre/psicología , Responsabilidad Parental , Discriminación Social , Adolescente , Adulto , Niño , Femenino , Grupos Focales , Humanos , Intención , Masculino , Persona de Mediana Edad , Sudeste de Estados Unidos
5.
Zoo Biol ; 38(5): 424-433, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31361060

RESUMEN

Captive elephant populations are not self-sustaining due to health concerns possibly related to obesity. Categorizing obesity relies on qualitative analyses like body condition scores (BCS). However, elephant indices have not been validated against measured body composition. The objective was to compare BCS systems to body composition determined by deuterium dilution in 28 zoo-kept Asian elephants. Elephants were weighed and given deuterated water orally (0.05 ml/kg). Blood was collected at ~0, 24, 120, 240, 360, and 480 hr after dosing. Photographs were taken to score the elephant based on four BCS systems (BCSWemmer [0 to 11 scoring], BCSMorfeld [1 to 5 scoring], BCSFernando [0 to 10 scoring], BCSWijeyamohan [1 to 10 scoring]). Based on regression analysis, relative fat ranged from -305 kg to 515 kg, where negative values indicate less and positive values indicate more fat than expected for the elephant's mass in this population. BCSFernando was associated with relative fat (p = .020, R2 = 0.194). Relative fat, adjusted for sex and age in the statistical model, was associated with BCSWemmer (p = .027, R2 = 0.389), BCSFernando (p = .002, R2 = 0.502), and BCSWijeyamohan (p = .011, R2 = 0.426). Inclusion of zoo and familial relatedness resulted in all BCS systems associated with relative fat (p ≤ .015). Only BCSFernando predicted relative fat, unadjusted, suggesting it is the most capable system for practical use. Compared to absolute fat, relative fat may be more biologically relevant as greater fat relative to body mass is more likely to lead to health issues.


Asunto(s)
Animales de Zoológico , Composición Corporal/fisiología , Elefantes/fisiología , Obesidad/veterinaria , Tejido Adiposo , Animales , Deuterio , Femenino , Masculino
6.
J Genet Couns ; 26(3): 532-540, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27618824

RESUMEN

Supervision is a practice that is utilized by a variety of practitioners to hone their counseling skills. Genetic counselors have embraced the supervision process, and some seek out supervision in a group setting with peers. Researchers have described the structure and content of genetic counseling peer supervision groups, and provided evidence for the benefits of seeking peer supervision. This study aimed to describe the interpersonal aspects of one genetic counseling peer supervision group, including personality traits and group dynamics, and how those factors influenced our experiences within the group. We also describe how the process of evaluating these factors impacted us individually and collectively. There was consensus that the group was a safe and trusting one, which was united by similar goals and mutual respect. Members reported gaining insights about how their own personality functioned within the group milieu, and also how the group setting impacted them. Based on our experiences, we recommend that other peer supervision groups consider similar self-evaluations on a periodic basis, both to enhance group functioning and to allow for increased self-awareness and professional growth.


Asunto(s)
Consejeros/psicología , Asesoramiento Genético , Procesos de Grupo , Relaciones Interpersonales , Grupo Paritario , Personalidad , Adulto , Femenino , Humanos
7.
BMC Med Educ ; 17(1): 161, 2017 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-28899383

RESUMEN

BACKGROUND: To describe the design and to present the results of a paediatric and neonatal cardiopulmonary resuscitation (CPR) training program adapted to Latin-America. METHODS: A paediatric CPR coordinated training project was set up in several Latin-American countries with the instructional and scientific support of the Spanish Group for Paediatric and Neonatal CPR. The program was divided into four phases: CPR training and preparation of instructors; training for instructors; supervised teaching; and independent teaching. Instructors from each country participated in the development of the next group in the following country. Paediatric Basic Life Support (BLS), Paediatric Intermediate (ILS) and Paediatric Advanced (ALS) courses were organized in each country adapted to local characteristics. RESULTS: Five Paediatric Resuscitation groups were created sequentially in Honduras (2), Guatemala, Dominican Republican and Mexico. During 5 years, 6 instructors courses (94 students), 64 Paediatric BLS Courses (1409 students), 29 Paediatrics ILS courses (626 students) and 89 Paediatric ALS courses (1804 students) were given. At the end of the program all five groups are autonomous and organize their own instructor courses. CONCLUSIONS: Training of autonomous Paediatric CPR groups with the collaboration and scientific assessment of an expert group is a good model program to develop Paediatric CPR training in low- and middle income countries. Participation of groups of different countries in the educational activities is an important method to establish a cooperation network.


Asunto(s)
Reanimación Cardiopulmonar/educación , Competencia Clínica/normas , Educación Médica Continua , Paro Cardíaco/terapia , Pediatría , Entrenamiento Simulado/métodos , Niño , Análisis Costo-Beneficio , Educación Médica Continua/economía , Evaluación Educacional , Conocimientos, Actitudes y Práctica en Salud , Humanos , América Latina , Pediatría/educación , Guías de Práctica Clínica como Asunto , Evaluación de Programas y Proyectos de Salud , Entrenamiento Simulado/economía , Entrenamiento Simulado/normas
8.
J World Aquac Soc ; 48(1): 122-131, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28348457

RESUMEN

Dual-energy X-ray absorptiometry (DXA) provides a noninvasive way to determine lean tissue mass (LTM), fat mass (FM), bone mineral content (BMC), and bone mineral density (BMD) in humans and small mammals. Live channel catfish (n=74, 78g - 1200 g) were anesthetized and scanned in both a lateral position and a dorsa-ventral position. Six individual fish (300g - 600g) were scanned five times each to determine precision by the coefficient of variation. Precision was good for LTM (0.75-1.06%) and for BMC and BMD (2-2.6%). Precision for FM was not good (27-34%), which was due to the very low FM (0-1g) recorded by the DXA. However, using the predicted values, FM precision improved to 5-5.5%. DXA values for LTM, FM, and BMC were significantly different from chemical analysis (P< 0.001). DXA overestimated LTM and underestimated FM and BMC. However, all three compartments were strongly correlated with carcass values (P <0.0001). Using the prediction equations and the jackknife procedure, predicted values of LTM, FM, and BMC were not significantly different from the carcass values (P >0.05). DXA may also be a valuable tool for evaluating body condition longitudinally in commercial or in threatened or endangered fish species, where non-invasive procedures would be invaluable.

9.
Am J Med Genet A ; 170A(1): 77-86, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26394714

RESUMEN

Mutations in PIGN, resulting in multiple congenital anomalies-hypotonia-seizures syndrome, a glycosylphosphatidylinositol anchor deficiency, have been published in four families to date. We report four patients from three unrelated families with epilepsy and hypotonia in whom whole exome sequencing yielded compound heterozygous variants in PIGN. As with previous reports Patients 1 and 2 (full siblings) have severe global developmental delay, gastroesophageal reflux disease, and minor dysmorphic features, including high palate, bitemporal narrowing, depressed nasal bridge, and micrognathia; Patient 3 had early global developmental delay with later progressive spastic quadriparesis, intellectual disability, and intractable generalized epilepsy; Patient 4 had bilateral narrowing as well but differed by the presence of hypertelorism, markedly narrow palpebral fissures, and long philtrum, had small distal phalanges of fingers 2, 3, and 4, absent distal phalanx of finger 5 and similar toe anomalies, underdeveloped nails, unusual brain anomalies, and a more severe early clinical course. These patients expand the known clinical spectrum of the disease. The severity of the presentations in conjunction with the patients' mutations suggest a genotype-phenotype correlation in which congenital anomalies are only seen in patients with biallelic loss-of-function. In addition, PIGN mutations appear to be panethnic and may be an underappreciated cause of epilepsy.


Asunto(s)
Anomalías Múltiples/genética , Discapacidades del Desarrollo/genética , Epilepsia/genética , Hipotonía Muscular/genética , Mutación/genética , Fosfotransferasas/genética , Convulsiones/genética , Anomalías Múltiples/patología , Adolescente , Adulto , Niño , Preescolar , Discapacidades del Desarrollo/patología , Epilepsia/congénito , Epilepsia/patología , Femenino , Estudios de Asociación Genética , Genotipo , Humanos , Lactante , Masculino , Hipotonía Muscular/congénito , Hipotonía Muscular/patología , Linaje , Fenotipo , Pronóstico , Convulsiones/congénito , Convulsiones/patología , Síndrome , Adulto Joven
10.
J Ultrasound Med ; 35(10): 2209-16, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27663655

RESUMEN

OBJECTIVES: To evaluate quantitative sonoelastography of benign and malignant musculoskeletal soft tissue masses. METHODS: We conducted a prospective study of 50 patients from a specialist sarcoma center who had extremity soft tissue masses referred for biopsy. After consent, the quantitative shear wave velocity (meters per second) was measured in longitudinal and transverse planes (3 readings in each plane and mean calculated). All masses subsequently underwent biopsy, excision, or both, with the histologic diagnosis taken as the reference standard. At a subsequent sitting, all anonymized B-mode sonograms were scored independently by 2 radiologists as benign or malignant with agreement by consensus if necessary. RESULTS: Of the 50 masses, 15 were malignant and 35 benign. Nine masses had incomplete velocity readings. Intraclass correlation coefficients for intra-reader reliability of velocity measurements were highly repeatable. There was preliminary evidence that the longitudinal shear wave velocity of malignant masses was on average 30% slower than that of benign masses (P< .10). Longitudinal and transverse shear wave measurements were moderately associated with each other (P = .003). There was no evidence that shear wave velocity varied with patient age, sex, or mass volume. For B-mode assessment of malignancy, sensitivity (Wilson 90% confidence interval) was 73.3% (52.1%, 87.4%), and specificity was 77.1% (63.8%, 86.6%). Interobserver agreement was substantial (κ= 0.86). Four of 15 malignant masses (26.6%) were incorrectly classified as benign on B-mode assessment (all grade 1 liposarcomas). CONCLUSIONS: These data suggest that shear wave velocity measurement is reproducible and that malignant masses may have slower longitudinal shear wave velocities than benign masses. The sample size of this pilot study precludes adjusted analysis but should form the basis for larger study designs.


Asunto(s)
Diagnóstico por Imagen de Elasticidad , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Evaluación como Asunto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Estudios Prospectivos , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Adulto Joven
11.
Adv Skin Wound Care ; 29(11): 511-517, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27755050

RESUMEN

OBJECTIVE: The aim of this study was to test the efficacy of a wound support network model between the primary home care service and the hospital. The impact on wound healing rate, cost benefit, and transfer of knowledge was investigated. INTERVENTION: The intervention group was exposed to a wound support network (n = 32), and the control group continued standard organization of treatment (n = 21). DESIGN: Nonrandomized controlled study; observations were made before (baseline) and after the implementation of the intervention (12 weeks). PATIENTS: Patients with chronic wounds (lasting >6 weeks and with wound area >1 cm) in Oslo, Norway. MAIN OUTCOME MEASURES: Closure of the observation wound; wound size; total number of wounds; presence of eczema, edema, and pain; number of dressings per week; time spent per dressing; and number of control appointments at the hospital. The economic impact is calculated for the hospital and for the community of Oslo, Norway. MAIN RESULTS: The number of control appointments (t = 3.80, P < .001) was significantly decreased, and the number of completed treatments (P = .02) was significantly increased after 12 weeks in the intervention group compared with the control group. A significant improvement was evident in the intervention group in terms of eczema (P = .02), edema (P = .03), and closing of the observational wound (46.7% cases in the intervention group versus 25.0% in the control group). CONCLUSIONS: A wound support network between the primary home care service and the hospital is cost-effective, improves clinical efficacy of the home care services' work, and reduces the need for consultations at the hospital.


Asunto(s)
Redes Comunitarias , Servicios de Atención de Salud a Domicilio , Hospitalización , Mejoramiento de la Calidad , Cicatrización de Heridas/fisiología , Heridas y Lesiones/terapia , Anciano de 80 o más Años , Análisis Costo-Beneficio , Femenino , Evaluación Geriátrica/métodos , Hospitalización/economía , Hospitales Universitarios , Humanos , Relaciones Interinstitucionales , Masculino , Noruega , Medición de Riesgo , Estadísticas no Paramétricas , Resultado del Tratamiento , Heridas y Lesiones/diagnóstico , Heridas y Lesiones/economía
12.
Geroscience ; 2024 Jun 08.
Artículo en Inglés | MEDLINE | ID: mdl-38850387

RESUMEN

Caloric restriction (CR) results in reduced energy and protein intake, raising questions about protein restriction's contribution to CR longevity benefits. We kept ad libitum (AL)-fed male C57BL/6J mice at 27°C (AL27) and pair-fed (PF) mice at 22°C (22(PF27)). The 22(PF27) group was fed to match AL27 while restricted for calories due to cold-induced metabolism. The 22(PF27) mice had significantly lower body weight, lean mass, fat mass, leptin, IGF-1, and TNF-α levels than AL27 mice (p<0.001 for all). Manipulations over ~11 weeks resulted in significant differences in body temperature, physical activity, and expression of key genes linked to hunger in the hypothalamus. Survival was significantly greater in 22(PF27) compared to AL27 overall (p<0.001). CR in the context of equivalent energy and protein intake resulted in hormonal, metabolic, and physiological benefits and extended longevity. Hence, energy imbalance, rather than low energy or protein intake per se, mediates the benefits of CR.

13.
Am J Med ; 2024 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-38735354

RESUMEN

BACKGROUND: Individuals with long COVID lack evidence-based treatments and have difficulty participating in traditional site-based trials. Our digital, decentralized trial investigates the efficacy and safety of nirmatrelvir/ritonavir, targeting viral persistence as a potential cause of long COVID. METHODS: The PAX LC trial (NCT05668091) is a Phase 2, 1:1 randomized, double-blind, superiority, placebo-controlled trial in 100 community-dwelling, highly symptomatic adult participants with long COVID residing in the 48 contiguous US states to determine the efficacy, safety, and tolerability of 15 days of nirmatrelvir/ritonavir compared with placebo/ritonavir. Participants are recruited via patient groups, cultural ambassadors, and social media platforms. Medical records are reviewed through a platform facilitating participant-mediated data acquisition from electronic health records nationwide. During the drug treatment, participants complete daily digital diaries using a web-based application. Blood draws for eligibility and safety assessments are conducted at or near participants' homes. The study drug is shipped directly to participants' homes. The primary endpoint is the PROMIS-29 Physical Health Summary Score difference between baseline and Day 28, evaluated by a mixed model repeated measure analysis. Secondary endpoints include PROMIS-29 (Mental Health Summary Score and all items), Modified GSQ-30 with supplemental symptoms questionnaire, COVID Core Outcome Measures for Recovery, EQ-5D-5L (Utility Score and all items), PGIS 1 and 2, PGIC 1 and 2, and healthcare utilization. The trial incorporates immunophenotyping to identify long COVID biomarkers and treatment responders. CONCLUSION: The PAX LC trial uses a novel decentralized design and a participant-centric approach to test a 15-day regimen of nirmatrelvir/ritonavir for long COVID.

14.
Mol Genet Metab ; 108(1): 8-12, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23266195

RESUMEN

OBJECTIVES: Individuals with phenylketonuria (PKU) treated early and continuously are reported to have psychiatric and executive function impairments. The feasibility of screening for psychiatric distress and executive function impairment in individuals with PKU was tested in 3 separate clinics in North America. METHODS: Individuals were offered screening for psychiatric distress using the Pediatric Symptom Checklist, the PSC-Youth Report or the Brief Symptom Inventory and executive function impairment using the Behavior Rating Inventory of Executive Function. Gender, age and blood phenylalanine (Phe) concentrations obtained most recently and during the 2 years prior to screening were assessed. RESULTS: More than 90% of patients with PKU accepted the screening for psychiatric distress during their routine clinic visit. The screening took 15-20 min. 32% of patients screened positive for psychiatric distress and 19% for executive function impairment. More individuals >18 years screened positive for psychiatric distress while a similar number screened positive for executive function impairment across age groups. Lower blood Phe levels correlated with negative screening for psychiatric distress. Patients positive for psychiatric distress had higher (p=0.009) median and most recent blood Phe values (p=0.05). DISCUSSION/CONCLUSIONS: Routine screening for psychiatric distress of patients with phenylketonuria could be easily implemented in current clinic structures. High incidences of positive screens reinforce the need for regular psychiatric assessments of individuals with PKU. Identification and referral to local mental health providers might help to improve the standard of care for individuals with PKU.


Asunto(s)
Fenilcetonurias/diagnóstico , Fenilcetonurias/psicología , Estrés Psicológico , Instituciones de Atención Ambulatoria , Humanos , Incidencia , Fenilcetonurias/terapia
15.
Learn Mem ; 19(4): 159-63, 2012 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-22419814

RESUMEN

In Aplysia, noxious stimuli induce sensitization of defensive responses. However, it remains largely unknown whether such stimuli also alter nondefensive behaviors. In this study, we examined the effects of noxious stimuli on feeding. Strong electric shocks, capable of inducing sensitization, also led to the suppression of feeding. The use of multiple training protocols revealed that the time course of the suppression of feeding was analogous to that of sensitization. In addition, the suppression of feeding was present only at the time points in which sensitization was expressed. These results suggest that, in Aplysia, noxious stimuli may produce concurrent changes in neural circuits controlling both defensive and nondefensive behaviors.


Asunto(s)
Aplysia/fisiología , Conducta Alimentaria/fisiología , Aprendizaje/fisiología , Fenómenos Fisiológicos del Sistema Nervioso , Animales , Estimulación Eléctrica
16.
Learn Mem ; 20(1): 1-5, 2012 Dec 14.
Artículo en Inglés | MEDLINE | ID: mdl-23242417

RESUMEN

In Aplysia, repeated trials of aversive stimuli produce long-term sensitization (LTS) of defensive reflexes and suppression of feeding. Whereas the cellular underpinnings of LTS have been characterized, the mechanisms of feeding suppression remained unknown. Here, we report that LTS training induced a long-term decrease in the excitability of B51 (a decision-making neuron in the feeding circuit) that recovered at a time point in which LTS is no longer observed (72 h post-treatment). These findings indicate B51 as a locus of plasticity underlying feeding suppression. Finally, treatment with serotonin to induce LTS failed to alter feeding and B51 excitability, suggesting that serotonin does not mediate the effects of LTS training on the feeding circuit.


Asunto(s)
Reacción de Prevención/fisiología , Corteza Cerebral/citología , Conducta Alimentaria/fisiología , Red Nerviosa/fisiología , Neuronas/fisiología , Reflejo/fisiología , Animales , Aplysia , Reacción de Prevención/efectos de los fármacos , Biofisica , Estimulación Eléctrica/métodos , Potenciación a Largo Plazo/efectos de los fármacos , Potenciación a Largo Plazo/fisiología , Red Nerviosa/efectos de los fármacos , Neuronas/efectos de los fármacos , Estimulación Física , Reflejo/efectos de los fármacos , Serotonina/farmacología , Factores de Tiempo
17.
Polymers (Basel) ; 15(12)2023 Jun 09.
Artículo en Inglés | MEDLINE | ID: mdl-37376274

RESUMEN

Current standard wound care involves dressings that provide moisture and protection; however, dressings providing active healing are still scarce and expensive. We aimed to develop an ecologically sustainable 3D printed bioactive hydrogel-based topical wound dressing targeting healing of hard-to-heal wounds, such as chronic or burn wounds, which are low on exudate. To this end, we developed a formulation composed of renewable marine components; purified extract from unfertilized salmon roe (heat-treated X, HTX), alginate from brown seaweed, and nanocellulose from tunicates. HTX is believed to facilitate the wound healing process. The components were successfully formulated into a 3D printable ink that was used to create a hydrogel lattice structure. The 3D printed hydrogel showed a HTX release profile enhancing pro-collagen I alpha 1 production in cell culture with potential of promoting wound closure rates. The dressing has recently been tested on burn wounds in Göttingen minipigs and shows accelerated wound closure and reduced inflammation. This paper describes the dressings development, mechanical properties, bioactivity, and safety.

18.
Pediatr Crit Care Med ; 13(2): 158-64, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21725275

RESUMEN

OBJECTIVE: To describe the characteristics and outcomes of mechanical ventilation in pediatric intensive care units during the season of acute lower respiratory infections. DESIGN: Prospective cohort of infants and children receiving mechanical ventilation for at least 12 hrs. SETTING: Sixty medical-surgical pediatric intensive care units. PATIENTS: All consecutive patients admitted to participating pediatric intensive care units during a 28-day period. MEASUREMENTS AND MAIN RESULTS: Of 2,156 patients admitted to pediatric intensive care units, 1185 (55%) received mechanical ventilation for a median of 5 days (interquartile range 2-8). Median age was 7 months (interquartile range 2-25). Main indications for mechanical ventilation were acute respiratory failure in 78% of the patients, altered mental status in 15%, and acute on chronic pulmonary disease in 6%. Median length of stay in the pediatric intensive care units was 10 days (interquartile range 6-18). Overall mortality rate in pediatric intensive care units was 13% (95% confidence interval: 11-15) for the entire population, and 39% (95% confidence interval: 23 - 58) in patients with acute respiratory distress syndrome. Of 1150 attempts at liberation from mechanical ventilation, 62% (95% confidence interval: 60-65) used the spontaneous breathing trial, and 37% (95% confidence interval: 35-40) used gradual reduction of ventilatory support. Noninvasive mechanical ventilation was used initially in 173 patients (15%, 95% confidence interval: 13-17). CONCLUSION: In the season of acute lower respiratory infections, one of every two children admitted to pediatric intensive care units requires mechanical ventilation. Acute respiratory failure was the most common reason for mechanical ventilation. The spontaneous breathing trial was the most commonly used method for liberation from mechanical ventilation.


Asunto(s)
Unidades de Cuidado Intensivo Pediátrico/estadística & datos numéricos , Respiración Artificial/estadística & datos numéricos , Infecciones del Sistema Respiratorio/terapia , Estaciones del Año , Enfermedad Aguda , Preescolar , Femenino , Mortalidad Hospitalaria , Humanos , Lactante , América Latina/epidemiología , Masculino , Portugal/epidemiología , Estudios Prospectivos , Infecciones del Sistema Respiratorio/mortalidad , España/epidemiología , Resultado del Tratamiento
19.
J Pediatr Endocrinol Metab ; 25(1-2): 157-62, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22570967

RESUMEN

BACKGROUND: The etiology of hypospadias is multifactorial. Abnormal androgenic secretion and/or action during the development of external genitalia may be involved in the etiology of this congenital malformation. This study explored CAG and GGN polymorphisms in the androgen receptor (AR) gene, which may affect its transcriptional activity, in patients with isolated hypospadias. METHODS: The length of the CAG/GGN polymorphisms was determined in 44 boys with non-severe (glandular) or severe (penile or penoscrotal) isolated hypospadias and with a normal hormonal evaluation. In addition, 79 healthy men, as controls, were studied. RESULTS: Mean CAG repeats were significantly higher in total and severe cases compared to controls (24.4 +/- 2.8 and 24.7 +/- 3.1 vs. 22.7 +/- 3.3, respectively; p<0.05, Student's t and Bonferroni test). In addition, a frequency of CAG alleles >23 was significantly different in total and severe cases compared to controls (70.5% and 74.1% vs. 39.2%, respectively, p<0.05, chi2 and Bonferroni test). The median number and the distribution of GGN polymorphisms were similar in cases and controls. CONCLUSION: Boys with isolated hypospadias have longer CAG alleles in their AR, which may be related with the development of this congenital malformation.


Asunto(s)
Hipospadias/genética , Polimorfismo Genético , Receptores Androgénicos/genética , Repeticiones de Trinucleótidos , Niño , Humanos , Hipospadias/etiología , Masculino
20.
Front Psychol ; 13: 805748, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35401369

RESUMEN

A growing body of research has suggested that high levels of family functioning-often measured as positive parent-child communication and low levels of parental stress-are associated with stronger cognitive development, higher levels of school engagement, and more successful peer relations as youth age. The COVID-19 pandemic has brought tremendous disruption to various aspects of daily life, especially for parents of young children, ages 3-5, who face isolation, disconnection, and unprecedented changes to how they engage and socialize. Fortunately, both youth and parent brains are plastic and receptive to change. Resilience research shows that factors such as engaging in acts of kindness, developing trusting relationships, and responding compassionately to the feelings of others can help lay new neural pathways and improve quality of life. Yet, little research has investigated the effects of brain healthy parental practices of kindness with pre-school aged children. The current study examines whether an interactive, parent-child kindness curriculum can serve as a potentiator for brain health as measured by resilience and child empathy levels. During a peak of the pandemic, mother participants between the ages of 26-46 (n = 38, completion rate 75%) completed questionnaires on parental resilience levels and parent-reported child empathic pro-social behaviors before and after engaging in a 4 weeks online, self-paced, kindness curriculum. Half of the group received additional brain health education explaining the principles of neuroplasticity, empathy, perspective taking, and resiliency. Mothers in both groups showed increased resilience ( p < 0.001) and reported higher levels of empathic behavior in their child ( p < 0.001) after completing the curriculum. There was no significant difference between groups. Comparison of mean resilience levels during COVID-19 to pre-pandemic general means indicated that mothers are reporting significantly lower levels of resilience as well as decreased empathetic behaviors in their children. These results support the notion that kindness is a powerful brain health booster that can increase resilience and empathy. This research study was timely and relevant for parents in light of the myriad of stresses brought about by the ongoing COVID-19 pandemic. There are broader public health implications for equipping individuals with tools to take a proactive and preventative approach to their brain health.

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