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1.
J Infect Dis ; 2024 Feb 29.
Artículo en Inglés | MEDLINE | ID: mdl-38421006

RESUMEN

BACKGROUND: Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can lead to severe disease with increased morbidity and mortality among certain risk groups. The presence of autoantibodies against type I interferons (aIFN-Abs) is one mechanism that contributes to severe coronavirus disease 2019 (COVID-19). METHODS: This study aimed to investigate the presence of aIFN-Abs in relation to the soluble proteome, circulating immune cell numbers, and cellular phenotypes, as well as development of adaptive immunity. RESULTS: aIFN-Abs were more prevalent in critical compared to severe COVID-19 but largely absent in the other viral and bacterial infections studied here. The antibody and T-cell response to SARS-CoV-2 remained largely unaffected by the presence aIFN-Abs. Similarly, the inflammatory response in COVID-19 was comparable in individuals with and without aIFN-Abs. Instead, presence of aIFN-Abs had an impact on cellular immune system composition and skewing of cellular immune pathways. CONCLUSIONS: Our data suggest that aIFN-Abs do not significantly influence development of adaptive immunity but covary with alterations in immune cell numbers.

2.
J Environ Manage ; 326(Pt B): 116750, 2023 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-36413954

RESUMEN

Prior research has identified both the contribution that people make to nature and the contribution that nature makes to people (by enhancing wellbeing) - with clear conceptual models to describe the interactions. Prior research has also made a clear case for incorporating insights from multiple perspectives and knowledge systems when seeking to better understand this interactive system. What is lacking, is guidance on how to operationalise some of these ideas to provide bespoke advice to environmental managers. Arguably, we have an adequate, albeit imperfect, understanding of how to operationalise (measure, value and/or otherwise account for) some parts of the conceptual model. There is, for example, abundant literature that describes different ways of valuing Ecosystem services, and a growing body of literature that describes and quantifies the ecological benefits of various stewardship activities, which will subsequently also generate an indirect benefit to people (since improved ecological conditions will improve Ecosystem services). In comparison, we know relatively little about the way in which stewardship activities directly benefit people - and it is on this gap that our paper focuses. We partially fill that knowledge gap by first reaching out to and learning from some of Australia's First Nations People. Key learnings underscore the inter-connectedness of the system, and the need for resource managers to not only monitor the extent and condition of natural system but also the extent and condition of an inextricably connected human system, in addition to the human-nature interactions. We clearly identify ways in which those insights can be used to improve and extend accounting frameworks, such as SEEA Ecosystem Accounts developed by the United Nations that are often used by natural resource managers. In so doing, we generate new insights about Indigenous stewardship (Caring for Country) and methods of accounting for and monitoring stewardship activities. As such, our work provides a practical illustration of one way to populate conceptual models with 'real world' data that also incorporates different world views, to support decision makers for improved social and environmental outcomes.


Asunto(s)
Conservación de los Recursos Naturales , Ecosistema , Humanos , Recursos Naturales , Naciones Unidas
3.
J Clin Microbiol ; 60(2): e0193521, 2022 02 16.
Artículo en Inglés | MEDLINE | ID: mdl-34851687

RESUMEN

The performance of blood cultures (BCs) relies on optimal sampling. Sepsis guidelines do not specify which sampling protocol to use but recommend two sets of BC bottles, each set containing one aerobic and one anaerobic bottle. For the single-site sampling (SSS) protocol, only one venipuncture is performed for all four bottles. The predominating multisite sampling (MSS) protocol implies that BC bottles are collected from two separate venipuncture sites. The aim of this study was to compare SSS and MSS. Primary outcomes were number of BC sets collected, sample volume, and diagnostic performance. This was a retrospective clinical study comparing BC results in an emergency department before and after changing the sampling protocol to SSS from MSS. All BC samples were incubated in the BacT/Alert BC system. The analysis included 5,248 patients before and 5,364 patients after the implementation of SSS. There was a significantly higher proportion of positive BCs sampled with SSS compared with MSS, 1,049/5,364 (19.56%) and 932/5,248 (17.76%), respectively (P = 0.018). This difference was due to a higher proportion of solitary BC sets (two BC bottles) in MSS. Analyzing only patients with the recommended four BC bottles, there was no difference in positivity. SSS had a higher proportion of BC bottles with the recommended sample volumes of 8-12 ml than MSS (P < 0.001). Changing the sampling protocol to SSS from MSS resulted in higher positivity rates, higher sample volume and fewer solitary BC sets. These advantages of SSS should be considered in future sepsis guidelines.


Asunto(s)
Bacteriemia , Sepsis , Bacteriemia/diagnóstico , Cultivo de Sangre/métodos , Humanos , Flebotomía , Estudios Retrospectivos , Sepsis/diagnóstico , Manejo de Especímenes/métodos
4.
Mol Psychiatry ; 26(8): 3817-3828, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-32051548

RESUMEN

Functional neurological (conversion) disorder (FND) is a neuropsychiatric condition whereby individuals present with sensorimotor symptoms incompatible with other neurological disorders. Early-life maltreatment (ELM) is a risk factor for developing FND, yet few studies have investigated brain network-trauma relationships in this population. In this neuroimaging-gene expression study, we used two graph theory approaches to elucidate ELM subtype effects on resting-state functional connectivity architecture in 30 patients with motor FND. Twenty-one individuals with comparable depression, anxiety, and ELM scores were used as psychiatric controls. Thereafter, we compared trauma endophenotypes in FND with regional differences in transcriptional gene expression as measured by the Allen Human Brain Atlas (AHBA). In FND patients only, we found that early-life physical abuse severity, and to a lesser extent physical neglect, correlated with corticolimbic weighted-degree functional connectivity. Connectivity profiles influenced by physical abuse occurred in limbic (amygdalar-hippocampal), paralimbic (cingulo-insular and ventromedial prefrontal), and cognitive control (ventrolateral prefrontal) areas, as well as in sensorimotor and visual cortices. These findings held adjusting for individual differences in depression/anxiety, PTSD, and motor phenotypes. In FND, physical abuse also correlated with amygdala and insula coupling to motor cortices. In exploratory analyses, physical abuse correlated connectivity maps overlapped with the AHBA spatial expression of three gene clusters: (i) neuronal morphogenesis and synaptic transmission genes in limbic/paralimbic areas; (ii) locomotory behavior and neuronal generation genes in left-lateralized structures; and (iii) nervous system development and cell motility genes in right-lateralized structures. These circuit-specific architectural profiles related to individual differences in childhood physical abuse burden advance our understanding of the pathophysiology of FND.


Asunto(s)
Trastornos de Conversión , Endofenotipos , Encéfalo , Niño , Expresión Génica , Humanos , Imagen por Resonancia Magnética , Neuroimagen
5.
AIDS Behav ; 26(12): 3834-3847, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35704124

RESUMEN

We assessed an intervention aimed at improving adherence to antiretroviral therapy (ART) among pregnant and postpartum women living with HIV (PPWLH). We randomized 133 pregnant women initiating ART in Uganda to receive text reminders generated by real time-enabled electronic monitors and data-informed counseling through 3 months postpartum (PPM3) or standard care. Intention-to-treat analyses found low adherence levels and no intervention impact. Proportions achieving ≥95% adherence in PPM3 were 16.4% vs. 9.1% (t = -1.14, p = 0.26) in intervention vs. comparison groups, respectively; 30.9% vs. 29.1% achieved ≥80% adherence. Additional analyses found significant adherence declines after delivery, and no effect on disease progression (CD4-cell count, viral load), though treatment interruptions were significantly fewer in intervention participants. Per-protocol analyses encompassing participants who used adherence monitors as designed experienced better outcomes, suggesting potential benefit for some PPWLH. The study was registered on ClinicalTrials.Gov (NCT02396394).


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Femenino , Humanos , Embarazo , Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/psicología , Retroalimentación , Uganda/epidemiología , Cumplimiento y Adherencia al Tratamiento , Carga Viral , Periodo Posparto , Cumplimiento de la Medicación/psicología
6.
J Digit Imaging ; 35(6): 1494-1505, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35794502

RESUMEN

Leg length discrepancies are common orthopedic problems with the potential for poor functional outcomes. These are frequently assessed using bilateral leg length radiographs. The objective was to determine whether an artificial intelligence (AI)-based image analysis system can accurately interpret long leg length radiographic images. We built an end-to-end system to analyze leg length radiographs and generate reports like radiologists, which involves measurement of lengths (femur, tibia, entire leg) and angles (mechanical axis and pelvic tilt), describes presence and location of orthopedic hardware, and reports laterality discrepancies. After IRB approval, a dataset of 1,726 extremities (863 images) from consecutive examinations at a tertiary referral center was retrospectively acquired and partitioned into train/validation and test sets. The training set was annotated and used to train a fasterRCNN-ResNet101 object detection convolutional neural network. A second-stage classifier using a EfficientNet-D0 model was trained to recognize the presence or absence of hardware within extracted joint image patches. The system was deployed in a custom web application that generated a preliminary radiology report. Performance of the system was evaluated using a holdout 220 image test set, annotated by 3 musculoskeletal fellowship trained radiologists. At the object detection level, the system demonstrated a recall of 0.98 and precision of 0.96 in detecting anatomic landmarks. Correlation coefficients between radiologist and AI-generated measurements for femur, tibia, and whole-leg lengths were > 0.99, with mean error of < 1%. Correlation coefficients for mechanical axis angle and pelvic tilt were 0.98 and 0.86, respectively, with mean absolute error of < 1°. AI hardware detection demonstrated an accuracy of 99.8%. Automatic quantitative and qualitative analysis of leg length radiographs using deep learning is feasible and holds potential in improving radiologist workflow.


Asunto(s)
Inteligencia Artificial , Radiología , Humanos , Pierna , Estudios Retrospectivos , Radiografía , Radiología/métodos
7.
Ann Fam Med ; 19(6): 527-531, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34376387

RESUMEN

In the United States, routine vaccination rates have plummeted across all age groups due to the COVID-19 pandemic, with our most vulnerable and under-served populations suffering the greatest declines. Returning to a "new normal" and recovering our nation's health and economy is of the utmost importance; however, there is a critical need to recover and protect communities against the spread of other vaccine-preventable diseases and outbreaks. While routine vaccination rates are slowly recovering for certain age groups, the introduction of COVID-19 vaccines adds complexities and challenges to recovery efforts. If not addressed, hard-won gains in routine vaccination may be lost, which could result in communities missing out on the social, economic, and health benefits offered by vaccinations.There is an urgent need to utilize evidence-based and innovative strategies to support both immediate and long-term efforts to recover, maintain, and sustain routine vaccination. Key short-term strategies include leveraging digital and mainstream media to drive awareness, coordinating across health and education sectors, utilizing centralized reminder recall, expanding access points to vaccination services, and elevating trusted voices for vaccination. In order to build back stronger, long-term strategies include enhancing immunization information systems, mitigating financial barriers to vaccination, investing in building vaccine confidence, and ensuring sustainable funding for immunization infrastructure.Annals "Online First" article.


Asunto(s)
COVID-19 , Vacunas , Vacunas contra la COVID-19 , Humanos , Programas de Inmunización , Pandemias , Políticas , SARS-CoV-2 , Estados Unidos , Vacunación
8.
Ann Behav Med ; 53(10): 886-895, 2019 08 29.
Artículo en Inglés | MEDLINE | ID: mdl-30624541

RESUMEN

BACKGROUND: Mood disturbance, pain, and fatigue are prevalent and distressing concerns for patients with hematologic cancer recovering from hematopoietic stem cell transplantation (HSCT). The way in which individuals approach difficult thoughts and emotions may affect symptoms and functioning. Specifically, mindfulness has been associated with more optimal psychological and physical functioning, whereas experiential avoidance has been associated with poorer outcomes. PURPOSE: The primary objective was to determine whether mindfulness and experiential avoidance measured prior to HSCT were associated with recovery of psychological and physical functioning following HSCT. We also evaluated dimensions of mindfulness to determine which were most robustly associated with outcomes. METHODS: Participants completed measures of mindfulness and experiential avoidance prior to HSCT. Depression and anxiety symptoms and pain and fatigue interference with daily activities were assessed prior to HSCT and 1, 3, and 6 months post-HSCT. RESULTS: Participants who reported better ability to describe their internal experiences and who were better able to act with awareness experienced less depression, anxiety, and fatigue interference following HSCT. Participants who were nonjudgmental and nonreactive toward thoughts and emotions experienced less depression and anxiety following HSCT, but these traits were not associated with pain or fatigue interference. Being a good observer of internal experiences was not associated with outcomes, nor was experiential avoidance. CONCLUSIONS: Results suggest that most facets of mindfulness may optimize psychological functioning following HSCT, and the ability to describe one's internal experience and to focus on the present moment may have a beneficial influence on physical functioning.


Asunto(s)
Ansiedad/psicología , Reacción de Prevención , Depresión/psicología , Fatiga/psicología , Trasplante de Células Madre Hematopoyéticas/psicología , Atención Plena , Dolor Postoperatorio/psicología , Adulto , Anciano , Neoplasias Hematológicas/terapia , Humanos , Persona de Mediana Edad
9.
Am J Med Genet A ; 176(6): 1327-1334, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29696750

RESUMEN

Angelman syndrome is a neurogenetic disorder with varying clinical presentations and symptoms as the individual ages. The goal of this study was to characterize changes over time in the natural history of this syndrome in a large population. We reviewed the medical records of the 53 patients who were born prior to 2000 and seen at the Angelman Syndrome Clinic at Massachusetts General Hospital to assess neurological, sleep, behavioral, gastrointestinal, orthopedic, and ophthalmologic functioning. The average age of this cohort was 24 years. Active seizures were present in 35%, nonepileptic myoclonus in 42%, and clinically significant tremors in 55%. Anxiety was present in 57%, increasing to 71% in those ages 26-43 years. In terms of sleep, 56% reported 8 hr of sleep or more, although 43% reported frequent nocturnal awakenings. Gastrointestinal issues remain problematic with 81% having constipation and 53% gastroesophageal reflux. The majority lived in a parent's home and remained independently mobile, though scoliosis was reportedly present in 30%, and 20% had reported low bone density/osteoporosis. The results of this study suggest that the prevalence of active seizures may decrease in adulthood but that the prevalence of movement disorders such as tremor and nonepileptic myoclonus may increase. Anxiety increases significantly as individuals age while defiant behaviors appear to decrease. Sleep dysfunction typically improves as compared to childhood but remains a significant issue for many adults. Other areas that require monitoring into adulthood include gastrointestinal dysfunction, and orthopedic/mobility issues, such as reported scoliosis and bone density, and ophthalmologic disorders.


Asunto(s)
Síndrome de Angelman/etiología , Ansiedad/etiología , Convulsiones/etiología , Adolescente , Adulto , Síndrome de Angelman/tratamiento farmacológico , Anticonvulsivantes/uso terapéutico , Ansiedad/tratamiento farmacológico , Estreñimiento/etiología , Femenino , Reflujo Gastroesofágico/etiología , Humanos , Masculino , Estudios Retrospectivos , Escoliosis/etiología , Convulsiones/tratamiento farmacológico , Trastornos del Sueño-Vigilia/tratamiento farmacológico , Trastornos del Sueño-Vigilia/etiología
10.
Epilepsy Behav ; 82: 170-174, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29555100

RESUMEN

Angelman syndrome (AS) is a neurogenetic imprinting disorder caused by loss of the maternally inherited Ube3a gene and is characterized by generalized epilepsy, limited expressive speech, sleep dysfunction, and movement disorders. Myoclonic seizures are often the first seizure type to appear, and myoclonic status, associated with developmental regression, may occur in the first few years of life. Additionally, there have been rare reports of prolonged episodes of myoclonus without electrographic correlate in adults with AS. The medical records of 200 individuals seen in the Angelman Syndrome Clinic at the Massachusetts General Hospital and the Lurie Center for Autism were retrospectively reviewed to identify and characterize myoclonic seizures and episodes of nonepileptic myoclonus. Myoclonic seizures were reported in 14% of individuals with age of onset occurring before 8years. These are brief events, unless the individual was experiencing myoclonic status, and electroencephalographs show interictal generalized spike and wave activity. Nonepileptic myoclonus occurred in 40% of individuals over 10years of age, and prevalence appears to increase with age. The episodes of nonepileptic myoclonus arise during puberty or later, with age of onset ranging from 10 to 26years. These events were captured on 5 video electroencephalographs and had no electrographic correlate. They can last from seconds to hours, always occurring in the hands and spreading to the face and all extremities in some individuals. Episodes of nonepileptic myoclonus have a discrete beginning and end, lacks a postictal period, and are not associated with significant alteration of consciousness or developmental regression. These episodes can be difficult to treat and are often refractory to medication; however, levetiracetam, clobazam, and clonazepam appear to be effective for some individuals. Myoclonic seizures are common in AS, typically occurring in young children and associated with epileptiform changes on electroencephalographs. Prolonged episodes are associated with developmental regression. In contrast, nonepileptic myoclonus typically begins in adolescence or early adulthood and has no electroencephalogram (EEG) correlate, alteration in consciousness, or regression but can significantly impact quality of life.


Asunto(s)
Síndrome de Angelman/complicaciones , Epilepsias Mioclónicas , Adolescente , Adulto , Distribución por Edad , Síndrome de Angelman/fisiopatología , Anticonvulsivantes/uso terapéutico , Niño , Preescolar , Electroencefalografía , Epilepsias Mioclónicas/tratamiento farmacológico , Epilepsias Mioclónicas/epidemiología , Epilepsias Mioclónicas/fisiopatología , Femenino , Humanos , Lactante , Masculino , Prevalencia , Calidad de Vida , Estudios Retrospectivos , Convulsiones/tratamiento farmacológico , Convulsiones/epidemiología , Trastornos del Sueño-Vigilia , Adulto Joven
12.
Am J Med Genet A ; 173(10): 2703-2709, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28816003

RESUMEN

Angelman syndrome (AS) is a neurogenetic disorder characterized by intellectual disability, expressive speech impairment, movement disorder, epilepsy, and a happy demeanor. Children with AS are frequently reported to be poor feeders during infancy and as having gastrointestinal issues such as constipation, reflux, and abnormal food related behaviors throughout their lifetime. To assess the prevalence of gastrointestinal disorders in individuals with AS, we retrospectively analyzed medical records of 120 individuals seen at the Angelman Syndrome Clinic at Massachusetts General Hospital and 43 individuals seen at the University of North Carolina Comprehensive Angelman Clinic. The majority of patients' medical records indicated at least one symptom of gastrointestinal dysfunction, with constipation and gastroesophageal reflux disease (GERD) the most common. Other gastrointestinal issues reported were cyclic vomiting episodes, difficulty swallowing, excessive swallowing, and eosinophilic esophagitis. Upper gastrointestinal symptoms such as GERD, swallowing difficulties, cyclic vomiting, and eosinophilic esophagitis were more common in those with deletions and uniparental disomy, likely related to the involvement of multiple genes and subsequent hypotonia. The frequency of constipation is consistent among all genetic subtypes while early feeding issues appear to mainly affect those with deletions. Caregivers and healthcare providers should be aware of the high prevalence of these issues, as proper treatment may improve not only gastrointestinal dysfunction but also sleep and behavioral issues.


Asunto(s)
Síndrome de Angelman/complicaciones , Enfermedades Gastrointestinales/epidemiología , Adolescente , Adulto , Síndrome de Angelman/fisiopatología , Niño , Preescolar , Femenino , Enfermedades Gastrointestinales/etiología , Enfermedades Gastrointestinales/patología , Humanos , Lactante , Masculino , Massachusetts/epidemiología , Prevalencia , Pronóstico , Estudios Retrospectivos , Adulto Joven
13.
Am J Med Genet A ; 167A(2): 331-44, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25428759

RESUMEN

Angelman syndrome (AS) is a neurogenetic disorder. The goal of this study was to investigate the primary health issues affecting adults with AS and to further characterize the natural history and genotype-phenotype correlations. Standardized phone interviews with caregivers for 110 adolescents and adults with AS were conducted. The impact of age, sex, and genotype on specific outcomes in neurology, orthopedics, internal medicine, and psychiatry were investigated. The mean age of individuals with AS was 24 years (range 16-50y). Active seizures were present in 41% of individuals, and 72% had sleep dysfunction. Significant constipation was present in 85%, and 32% were overweight or obese, with obesity disproportionately affecting women. Scoliosis affected 50% with a mean age at diagnosis of 12 years, and 24% of those diagnosed with scoliosis required surgery, an intervention disproportionately affecting men. Sixty-eight percent were able to walk independently, and 13% were able to speak 5 or more words. Self-injurious behavior was exhibited in 52% of individuals. The results of this study indicate that epilepsy severity may assume a bimodal age distribution: seizures are typically most severe in early childhood but may recur in adulthood. While late-adolescent and adult sleep patterns were improved when compared to the degree of sleep dysfunction present during infancy and childhood, the prevalence of poor sleep in adults remained quite high. Primary areas of clinical management identified include the following: seizures, sleep, aspiration risk, GERD, constipation, dental care, vision, obesity, scoliosis, bone density, mobility, communication, behavior, and anxiety.


Asunto(s)
Síndrome de Angelman/epidemiología , Actividades Cotidianas , Adolescente , Adulto , Síndrome de Angelman/diagnóstico , Síndrome de Angelman/genética , Canadá/epidemiología , Estudios de Cohortes , Bases de Datos Factuales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mutación , Puerto Rico/epidemiología , Ubiquitina-Proteína Ligasas/genética , Disomía Uniparental , Estados Unidos/epidemiología , Adulto Joven
14.
J Neurosurg Pediatr ; 33(2): 185-189, 2024 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-37976515

RESUMEN

OBJECTIVE: Perioperative stroke is a major complication of revascularization surgery in patients with moyamoya. Vomiting is common after neurosurgical procedures and may result in acute changes in intracranial pressure and cerebral blood flow. The authors instituted a standardized perioperative nausea and vomiting protocol for children with moyamoya undergoing indirect bypass surgery at their institution and analyzed its association with perioperative stroke. They hypothesized that instituting a standardized perioperative nausea and vomiting protocol would be associated with reduction in the number of perioperative strokes in children with moyamoya undergoing indirect bypass surgery. METHODS: The authors retrospectively reviewed consecutive cases of children and young adults with moyamoya who underwent indirect bypass surgery before and after implementation of a new perioperative nausea and vomiting protocol at a single institution. They compared the rate of strokes in the perioperative period (postoperative days 0 and 1) in the 31 months following implementation to 31 months prior to implementation using Fisher's exact test. RESULTS: The median ages pre- and postimplementation were 8.5 (IQR 4-12) years and 8.3 (IQR 5-15) years, respectively. There were no significant differences between the cohorts in disease severity or other potentially confounding factors. In the 31 months prior to initiation of the perioperative nausea and vomiting protocol, there were 5 strokes in 137 surgically treated hemispheres (3.6%). After initiation of the protocol, there were no strokes in 114 surgically treated hemispheres (p = 0.065). CONCLUSIONS: Instituting a standardized perioperative nausea and vomiting protocol was associated with reduction in perioperative strokes in children with moyamoya treated with indirect bypass surgery.


Asunto(s)
Revascularización Cerebral , Enfermedad de Moyamoya , Accidente Cerebrovascular , Adulto Joven , Niño , Humanos , Preescolar , Estudios Retrospectivos , Resultado del Tratamiento , Revascularización Cerebral/efectos adversos , Revascularización Cerebral/métodos , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/prevención & control , Accidente Cerebrovascular/cirugía , Atención Perioperativa , Enfermedad de Moyamoya/cirugía , Enfermedad de Moyamoya/complicaciones , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/prevención & control , Náusea/complicaciones , Vómitos
15.
Microbiol Spectr ; : e0500122, 2023 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-36809027

RESUMEN

EUCAST rapid antimicrobial susceptibility testing (RAST) provides antibiotic susceptibility results after 4 to 8 h of incubation. This study assessed the diagnostic performance and clinical usefulness of EUCAST RAST after 4 h. This was a retrospective clinical study performed on blood cultures with Escherichia coli and Klebsiella pneumoniae complex (K. pneumoniae and Klebsiella variicola) at Karolinska University Laboratory (Stockholm, Sweden). The rate of categorized RAST results and the categorical agreement (CA) of RAST with the standard EUCAST 16-to-20-h disk diffusion (DD) method for piperacillin-tazobactam, cefotaxime, ceftazidime, meropenem, and ciprofloxacin were analyzed, as well as the utility of RAST for adjusting the empirical antibiotic therapy (EAT) and the combination of RAST with a lateral flow assay (LFA) for extended-spectrum ß-lactamase (ESBL) detection. A total of 530 E. coli and 112 K. pneumoniae complex strains were analyzed, generating 2,641 and 558 readable RAST zones, respectively. RAST results categorized according to antimicrobial sensitivity/resistance (S/R) were obtained for 83.1% (2,194/2,641) and 87.5% (488/558) of E. coli and K. pneumoniae complex strains, respectively. The RAST result categorization to S/R for piperacillin-tazobactam was poor (37.2% for E. coli and 66.1% for K. pneumoniae complex). CA with the standard DD method was over 97% for all tested antibiotics. Using RAST, we detected 15/26 and 1/10 of the E. coli and K. pneumoniae complex strains that were resistant to the EAT. For patients treated with cefotaxime, RAST was used to detect 13/14 cefotaxime-resistant E. coli strains and 1/1 cefotaxime-resistant K. pneumoniae complex strain. ESBL positivity was reported the same day as blood culture positivity with RAST and LFA. EUCAST RAST provides accurate and clinically relevant susceptibility results after 4 h of incubation and can accelerate the assessment of resistance patterns. IMPORTANCE Early effective antimicrobial treatment has been shown to be crucial for improving the outcome of bloodstream infections (BSI) and sepsis. In combination with the rise of antibiotic resistance, this calls for accelerated methods for antibiotic susceptibility testing (AST) for effective treatment of BSI. This study assesses EUCAST RAST, an AST method that yields results in 4, 6, or 8 h after blood culture positivity. We analyzed a high number of clinical samples of Escherichia coli and Klebsiella pneumoniae complex strains and confirm that the method delivers reliable results after 4 h of incubation for the relevant antibiotics for treating E. coli and K. pneumoniae complex bacteremia. Furthermore, we conclude that it is an important tool for antibiotic treatment decision-making and early detection of ESBL-producing isolates.

16.
Epilepsia ; 53(9): 1498-502, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22779920

RESUMEN

PURPOSE: The low glycemic index treatment (LGIT) is a high fat, limited carbohydrate diet used in the treatment of epilepsy. The purpose of this study was to assess the efficacy and tolerability of the LGIT for the treatment of refractory seizures in pediatric patients with Angelman syndrome. METHODS: A pediatric Angelman syndrome cohort with refractory epilepsy was treated with the LGIT and followed prospectively over 4 months. Parents recorded a daily seizure log for a minimum of 1 month prior to the start of treatment as well as throughout the LGIT trial. Electroencephalography (EEG) and neuropsychological assessments (Scales of Independent Behavior-Revised and the Vineland Adaptive Behavior Scales-2nd Edition were obtained for each subject at both baseline and 4-month follow-up time points. Clinical evaluations of subjects were completed by a neurologist and dietitian at the time of enrollment, as well as following both the first and fourth months of dietary therapy. At each time point, blood for laboratory chemistries was drawn and anthropometric measures were obtained. KEY FINDINGS: Six children (mean age 3.3 years, range 1.1-4.8) with genetically confirmed Angelman syndrome initiated the LGIT, and completed the trial with no significant adverse events. Cohort averages for indices of seizure severity were as follows: age of 1.6 years at seizure onset, 3 lifetime antiepileptic drugs tried (range 1-6), and baseline seizure frequency of 10.1 events/week (range: 0.4-30.9). All subjects had a decrease in seizure frequency on the LGIT, with five of six exhibiting >80% seizure frequency reduction. All posttrial EEG studies showed improvement and three of four children with epileptiform activity on his or her baseline EEG had no discharges present on follow-up EEG. Developmental gains were noted by parents in all cases, although few of these neurocognitive gains were statistically significant on neuropsychological assessment. SIGNIFICANCE: This is the first prospective study assessing the LGIT for epilepsy. Our results indicate that this dietary therapy is highly effective in treating Angelman syndrome-related seizures. The diet was well tolerated by subjects as evidenced by five of six subjects remaining on the LGIT after completion of the trial. Beyond the prospective trial window, all five subjects who remained on the diet had >90% seizure reduction after 1 year of LGIT therapy. Despite the small sample size in this prospective study, the results indicate a potentially higher degree of efficacy of the LGIT for the Angelman syndrome population than that observed in the general epilepsy population. Although this study is too small to make definitive recommendations, these results suggest that the LGIT is a promising treatment option for Angelman syndrome-related epilepsy.


Asunto(s)
Síndrome de Angelman/dietoterapia , Síndrome de Angelman/epidemiología , Dieta Baja en Carbohidratos/métodos , Índice Glucémico/fisiología , Convulsiones/dietoterapia , Síndrome de Angelman/sangre , Glucemia/metabolismo , Preescolar , Estudios de Cohortes , Femenino , Humanos , Lactante , Masculino , Estudios Prospectivos , Convulsiones/sangre , Convulsiones/epidemiología , Resultado del Tratamiento
17.
Epilepsia ; 53(7): 1162-9, 2012 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22594377

RESUMEN

PURPOSE: Disrupted sleep patterns in children with epilepsy and their parents are commonly described clinically. A number of studies have shown increased frequency of sleep disorders among pediatric epilepsy patients; however, few have characterized the association between epilepsy and parental sleep quality and household sleeping arrangements. The purpose of this study was to explore the effect of pediatric epilepsy on child sleep, parental sleep and fatigue, and parent-child sleeping arrangements, including room sharing and cosleeping. METHODS: Parents of children 2 to 10 years of age with and without epilepsy completed written questionnaires assessing seizure history, child and parent sleep, and household sleeping arrangements. Children's Sleep Habits Questionnaire (CSHQ) scores were used to evaluate sleep disturbances for the child. The Pittsburgh Sleep Quality Index (PSQI) and the Iowa Fatigue Scale (IFS) were used to evaluate parental sleep and fatigue, respectively. The Early Childhood Epilepsy Severity Scale (E-Chess) was used to assess epilepsy severity. KEY FINDINGS: One hundred five households with a child with epilepsy and 79 controls participated in this study. Households with a child with epilepsy reported increased rates of both parent-child room sharing (p < 0.001) and cosleeping (p = 0.005) compared to controls. Children with epilepsy were found to have greater sleep disturbance by total CSHQ score (p < 0.001) and the following subscores: parasomnias (p < 0.001), night wakings (p < 0.001), sleep duration (p < 0.001), daytime sleepiness (<0.001), sleep onset delay (p = 0.009), and bedtime resistance (p = 0.023). Parents of children with epilepsy had increased sleep dysfunction (p = 0.005) and were more fatigued (p < 0.001). Severity of epilepsy correlated positively with degree of child sleep dysfunction (0.192, p = 0.049), parental sleep dysfunction (0.273, p = 0.005), and parental fatigue (0.324, p = 0.001). Antiepileptic drug polytherapy was predictive of greater childhood sleep disturbances. Nocturnal seizures were associated with parental sleep problems, whereas room sharing and cosleeping behavior were associated with child sleep problems. Within the epilepsy cohort, 69% of parents felt concerned about night seizures and 44% reported feeling rested rarely or never. Finally, 62% of parents described decreased sleep quality and/or quantity with cosleeping. SIGNIFICANCE: Pediatric epilepsy can significantly affect sleep patterns for both the affected child and his or her parents. Parents frequently room share or cosleep with their child, adaptations which may have detrimental effects for many households. Clinicians must not only be attentive to the sleep issues occurring in pediatric patients with epilepsy, but also for the household as a whole. These data provide evidence of a profound clinical need for improved epilepsy therapeutics and the development of nocturnal seizure monitoring technologies.


Asunto(s)
Trastornos de la Conducta Infantil/etiología , Epilepsia/complicaciones , Relaciones Padres-Hijo , Pediatría , Trastornos del Sueño-Vigilia/etiología , Niño , Preescolar , Epilepsia/psicología , Femenino , Humanos , Masculino , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios
18.
J Enzyme Inhib Med Chem ; 27(6): 784-94, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22085139

RESUMEN

Trypanothione reductase (TR) is found in the trypanosomatid parasites, where it catalyses the NADPH-dependent reduction of the glutathione analogue, trypanothione, and is a key player in the parasite's defenses against oxidative stress. TR is a promising target for the development of antitrypanosomal drugs; here, we report our synthesis and evaluation of compounds 3-5 as low micromolar Trypanosoma cruzi TR inhibitors. Although 4 and 5 were designed as potential irreversible inhibitors, these compounds, as well as 3, displayed reversible competitive inhibition. Compound 3 proved to be the most potent inhibitor, with a K(i) = 2 µM.


Asunto(s)
Glutatión/análogos & derivados , NADH NADPH Oxidorreductasas/antagonistas & inhibidores , NADP/química , Espermidina/análogos & derivados , Tripanocidas/síntesis química , Trypanosoma cruzi/química , Diseño de Fármacos , Pruebas de Enzimas , Escherichia coli/genética , Glutatión/química , Cinética , Espectroscopía de Resonancia Magnética , Imitación Molecular , Proteínas Recombinantes/antagonistas & inhibidores , Espectroscopía Infrarroja por Transformada de Fourier , Espermidina/química , Especificidad por Sustrato , Tripanocidas/química , Trypanosoma cruzi/enzimología
19.
Hum Vaccin Immunother ; 18(1): 1975453, 2022 Dec 31.
Artículo en Inglés | MEDLINE | ID: mdl-34674605

RESUMEN

Routine vaccination has been severely impacted by the COVID-19 pandemic, with 37% of countries reporting continuing disruptions to vaccination services into 2021. These programs have been faced with the challenges of achieving high vaccination coverage rates (VCRs), as well as identifying and vaccinating those who missed recommended doses since the pandemic began. Declines in VCRs, even for short periods, can lead to an increase in disease outbreaks, place additional pressure on health systems, and leave communities across the world at risk of death and disease from vaccine-preventable diseases.In the face of these disruptions, select governments are implementing promising approaches to address low VCRs, some of which represent innovative solutions to advance short-term, as well as longer-term program improvement. However, expanded action is urgently required to fully recover vaccination programs and strengthen vaccine system infrastructure. The COVID-19 pandemic provides a unique opportunity to modernize routine programs and corresponding infrastructure to meet today's and tomorrow's health challenges more effectively and efficiently. This can be achieved by prioritizing routine vaccination as an essential health service, improving access to vaccination across the life-course, strengthening data systems, ensuring sustainable immunization financing, and building confidence in vaccination.


Asunto(s)
COVID-19 , Pandemias , COVID-19/epidemiología , COVID-19/prevención & control , Humanos , Programas de Inmunización , Pandemias/prevención & control , Salud Pública , SARS-CoV-2 , Vacunación
20.
Artículo en Inglés | MEDLINE | ID: mdl-34728537

RESUMEN

Rod-cone dystrophy (RCD), also known as retinitis pigmentosa, is an inherited condition leading to vision loss, affecting 1 in 3500 people. More than 270 genes are known to be implicated in the inherited retinal degenerations (IRDs), yet genetic diagnosis for ∼30% of IRD of patients remains elusive despite advances in sequencing technologies. The goal of this study was to determine the genetic causality in a family with RCD. Family members were given a full ophthalmic exam at the Retinal Service at Massachusetts Eye and Ear and consented to genetic testing. Whole-exome sequencing (WES) was performed and variants of interest were Sanger-validated. Functional assays were conducted in zebrafish along with splicing assays in relevant cell lines to determine the impact on retinal function. WES identified variants in two potential candidate genes that segregated with disease: GNL3 (G Protein Nucleolar 3) c.1187 + 3A > C and c.1568-8C > A; and PDE4DIP (Phosphodiester 4D Interacting Protein) c.3868G > A (p.Glu1290Lys) and c.4603G > A (p.Ala1535Thr). Both genes were promising candidates based on their retinal involvement (development and interactions with IRD-associated proteins); however, the functional assays did not validate either gene. Subsequent WES reanalysis with an updated bioinformatics pipeline and widened search parameters led to the detection of a 94-bp duplication in PRPF31 (pre-mRNA Processing Factor 31) c.73_266dup (p.Asp56GlyfsTer33) as the causal variant. Our study demonstrates the importance of thorough functional characterization of new disease candidate genes and the value of reanalyzing next-generation sequencing sequence data, which in our case led to identification of a hidden pathogenic variant in a known IRD gene.


Asunto(s)
Degeneración Retiniana , Retinitis Pigmentosa , Animales , Proteínas de Unión al GTP/genética , Humanos , Mutación , Proteínas Nucleares/genética , Linaje , Degeneración Retiniana/genética , Retinitis Pigmentosa/genética , Secuenciación del Exoma , Pez Cebra/genética
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