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1.
J Paediatr Child Health ; 60(4-5): 125-131, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38655904

RESUMEN

AIM: To describe the characteristics of patients with chronic hepatitis B (CHB) presenting to a tertiary paediatric hospital in Perth, Western Australia. Review of implementation of previous follow-up recommendations for the cohort was also undertaken. METHOD: A retrospective data analysis of all individuals aged between 0 and 17 years presenting to the tertiary children's hospital who were hepatitis B surface antigen (HBsAg) positive over 8 years (2013-2020). Demographic features, clinical progress and follow up are described, including proportion transferred to adult services. RESULTS: Seventy-four patients were identified to have CHB; mean age at diagnosis 11 years; standard deviation 4 years; 41 (55%) male. Cultural and ethnolinguistic diversity was high; 74% (n = 55) were from refugee-like backgrounds. Many did not demonstrate English proficiency (23/40; 75%) and 7 (10%) Australian born including 4 patients who were Aboriginal. Most patients (58%) with CHB were in the hepatitis B e antigen-positive chronic infection phase with no intervention provided. Seventeen children had undergone liver ultrasonography and one underwent liver biopsy; none received antiviral treatment. Follow up was concerning; 28 (38%) had at least one clinic non-attendance, 24 (32%) lost to follow-up and interpreter utilisation was poorly documented. Thirty-nine (53%) were transferred to adult services with only 56% attending follow-up. CONCLUSION: CHB burden is higher in those from culturally and ethnolinguistically diverse backgrounds. There is a significant loss to follow-up and suboptimal transfer to adult services. Improved recall, education and referral processes are necessary to overcome language, socioeconomic and cultural barriers. Although childhood complications are infrequent, longitudinal monitoring is crucial to prevent long-term complications and adult morbidity.


Asunto(s)
Hepatitis B Crónica , Humanos , Australia Occidental/epidemiología , Masculino , Niño , Femenino , Adolescente , Estudios Retrospectivos , Preescolar , Hepatitis B Crónica/diagnóstico , Hepatitis B Crónica/epidemiología , Lactante , Recién Nacido
2.
Viruses ; 15(12)2023 12 13.
Artículo en Inglés | MEDLINE | ID: mdl-38140658

RESUMEN

Respiratory syncytial virus (RSV) reinfection in children is poorly understood. We examined the incidence, characteristics, and outcomes of hospital-attended RSV reinfections in children <16 years in Western Australia between 2012 and 2022. Individuals with repeat RSV detections ≥56 days apart were identified using laboratory data. The incidence of reinfection in the first five years of life was estimated using the total birth population from 2012 to 2017. Clinical data on a subset of reinfection episodes were obtained from two metropolitan pediatric centers. A total of 466 children with hospital-attended reinfections were identified. The median interval between RSV detections was 460 days (interquartile range: 324, 812), with a reinfection rate of 95 per 100,000 individuals (95% confidence interval: 82, 109). Reinfection was most common in children who experienced their first RSV detection <6 months of age. Predisposing factors were identified in 56% of children; children with predisposing factors were older at first and second detections, were more likely to be admitted, and had a longer length of stay. This study highlights the significant burden of hospital-attended RSV reinfections in children with and without predisposing factors. Expanded surveillance with in-depth clinical data is required to further characterize the impact of RSV reinfection.


Asunto(s)
Infecciones por Virus Sincitial Respiratorio , Virus Sincitial Respiratorio Humano , Niño , Humanos , Lactante , Reinfección , Infecciones por Virus Sincitial Respiratorio/epidemiología , Australia Occidental/epidemiología , Hospitalización
3.
Artículo en Inglés | MEDLINE | ID: mdl-37134057

RESUMEN

The first metatarsophalangeal joint is the most common location for arthritis in the foot. Pain and limited mobility associated with arthritis of the first metatarsophalangeal joint are the hallmarks of this disease. Treatments include shoe modification, orthotic devices, nonsteroidal anti-inflammatory drugs, injections, physical therapy, and surgery. Surgery has been the most perplexing, with surgical treatments ranging from simple ostectomies to fusion of the first metatarsophalangeal joint. Implant arthroplasty, with its various designs and techniques, has yet to be proven as the definitive solution for first metatarsophalangeal joint arthritis or hallux limitus (unlike the knee and hip). Interpositional arthroplasty and tissue-engineered cartilage grafts also have limitations when dealing with osteoarthritis and hallux limitus of the first metatarsophalangeal joint. In this case report, we present a 45-year-old woman with arthritis of the left first metatarsophalangeal joint who underwent surgical intervention by means of a frozen osteochondral allograft transplant to the first metatarsal head.


Asunto(s)
Artritis , Hallux Limitus , Hallux Rigidus , Hallux , Articulación Metatarsofalángica , Femenino , Humanos , Persona de Mediana Edad , Articulación Metatarsofalángica/cirugía , Hallux Rigidus/diagnóstico por imagen , Hallux Rigidus/cirugía , Aloinjertos
4.
Artículo en Inglés | MEDLINE | ID: mdl-36768129

RESUMEN

The purpose of this cross-sectional study was to determine individual, sociocultural, policy, and economic predictors of overweight/obesity in early care and education (ECE) teachers to identify modifiable opportunities to enhance the health of this critical workforce. ECE teachers (n = 1434) in the U.S. completed an online survey in late spring to mid-summer 2020. Teachers self-reported height and weight; body mass index (BMI) and weight status were calculated. Teachers reported micro-environment variables including age, race, gender, obesogenic lifestyle behaviors, well-being, food security, personal health, stress, job stress, type of ECE, COVID-19 teaching modality, and age of children in the classroom. Logistic regression predicting overweight/obesity and linear regression predicting BMI were conducted. Teachers with more years of teaching experience (OR: 1.022: 95% CI 1.005, 1.039) and higher consumption of fast food (2.038: 1.310, 3.169) had higher odds of overweight/obesity. Teachers with higher levels of education (0.58: 0.407, 0.828) and higher physical health (0.836: 0.775, 0.902) had lower odds of overweight/obesity. Other variables were not associated with overweight/obesity. Variables significant in logistic regression were also associated with higher BMI. Additionally, Native American race (ß = 2.467 SE = 1.206) and sedentary hours/day (ß = 0.152 SE = 0.075) were associated with higher BMI. Implications for enhancing workplace health for these ECE teachers are emerging.


Asunto(s)
COVID-19 , Sobrepeso , Niño , Humanos , Sobrepeso/epidemiología , Estudios Transversales , COVID-19/epidemiología , Obesidad/epidemiología , Índice de Masa Corporal
5.
Artículo en Inglés | MEDLINE | ID: mdl-38175698

RESUMEN

First metatarsophalangeal joint (MPJ) arthritis is a very common form of arthritis seen in the foot. Some signs and symptoms include pain, swelling, decreased passive and active range of motion, difficulty with shoe gear, and so forth. Surgically, options for alleviating symptomatic hallux limitus and arthritis fall into two broad categories: joint sparing and joint sacrificing. In this case study, we present a patient with a bilateral failed total silastic implant of the first MPJ and our proposed revision using an osteochondral bone allograft to fill the deficit left behind from silastic implant removal. The ability for immediate weightbearing and to perform this procedure bilaterally is an advantage to this surgical treatment option compared with other described revision techniques. Postoperatively, the patient has adequate range of motion and no pain when ambulatory. We believe this osteochondral allograft implant may be a viable option for revision first MPJ arthroplasty in select patient populations.


Asunto(s)
Artritis , Fracturas Intraarticulares , Articulación Metatarsofalángica , Falla de Prótesis , Humanos , Aloinjertos , Dimetilpolisiloxanos , Articulación Metatarsofalángica/diagnóstico por imagen , Articulación Metatarsofalángica/cirugía , Dolor
7.
Pediatr Infect Dis J ; 41(12): 959-966, 2022 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-36102734

RESUMEN

BACKGROUND: Antimicrobials are the most commonly prescribed drug class in children. Overuse through inappropriate prescribing is a key driver of antimicrobial resistance and is recognized as one of the top 10 threats to global health by the World Health Organization. METHODS: A prospective observational cohort study was performed following implementation of a multifaceted Antimicrobial Stewardship (AMS) program (January 2014 to December 2020). Data were collected on AMS and "handshake" ward rounds from patient information sources and directly from clinicians responsible for patient care. Primary outcomes include appropriateness of therapy (drug, dose, antimicrobial spectrum, duration and route), compliance with prescribing guidelines, antimicrobial expenditure, use of high-priority antimicrobials and duration of hospitalization. We compared outcomes across 3 time periods; January 2014-December 2015, January 2016-December 2017 and January 2018-December 2020. RESULTS: The appropriateness of individual antimicrobial orders improved across the study periods from 6111/7040 (79.4%) in the first 2 years following implementation of the AMS program to 17,819/19,229 (92.3%) in the latter period. Guideline compliance increased from 5426/7700 (70.5%) to 17,822/19,316 (92.3%). A reduction in overall antimicrobial expenditure (34% reduction, equivalent to $12.52 per bed day) and a decrease in antifungal expenditure (37% reduction, equivalent to $5.56 per bed day) was observed across the time periods. CONCLUSIONS: This study quantifies a comprehensive pediatric AMS program's sustained impact on reducing inappropriate antimicrobial use and expenditure and improving compliance with guidelines. The effectiveness of these interventions has been demonstrated and should be considered by institutions seeking to improve rational antimicrobial use in children.


Asunto(s)
Antiinfecciosos , Programas de Optimización del Uso de los Antimicrobianos , Humanos , Niño , Estudios Prospectivos , Hospitales Pediátricos , Prescripción Inadecuada/prevención & control , Antiinfecciosos/uso terapéutico , Antibacterianos/uso terapéutico
8.
Artículo en Inglés | MEDLINE | ID: mdl-35457789

RESUMEN

While a global understanding of teacher well-being during the COVID-19 pandemic is beginning to emerge, much remains to be understood about what early childhood teachers have felt and experienced with respect to their work and well-being. The present mixed-method study examined early care and education (ECE) teachers' working conditions and physical, psychological, and professional well-being during the COVID-19 pandemic using a national sample of 1434 ECE teachers in the U.S. We also explored differences in working conditions and well-being among in-person, online, and closed schools, given the unique challenges and risks that ECE teachers may have faced by teaching in these different modalities. From the results of an online survey, we found that in the early months of the pandemic, many ECE teachers faced stressful, challenging work environments. Some were teaching in new, foreign modes and formats, and those still teaching in person faced new challenges. We found many common issues and challenges related to psychological and physical well-being across the three teaching groups from the qualitative analysis, but a more complicated picture emerged from the quantitative analysis. After controlling for education and center type, we found that aspects of professional commitment were lower among those teachers teaching in person. Additionally, there were racial differences across several of our measures of well-being for teachers whose centers were closed. Upon closer examination of these findings via a moderation analysis with teacher modality, we found that Black and Hispanic teachers had higher levels of psychological well-being for some of our indicators when their centers were closed, yet these benefits were not present for Black and Hispanic teachers teaching in person.


Asunto(s)
COVID-19 , Personal Docente , COVID-19/epidemiología , Preescolar , Humanos , Pandemias , Encuestas y Cuestionarios
9.
J Investig Med High Impact Case Rep ; 10: 23247096221084909, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35313776

RESUMEN

Coronary arteries arising from the pulmonary artery have an incidence of 0.002% in the general population. We present a 29-year-old woman who presented to our hospital with acute decompensated heart failure and atrial fibrillation with a rapid ventricular rate. She underwent a cardiac catheterization to rule out ischemic disease, which revealed retrograde contrast flow through the left coronary artery from the right coronary artery. A coronary computed tomography (CT) angiogram was pursued which showed the presence of an anomalous left coronary artery arising from the pulmonary artery (ALCAPA). For the management of her atrial fibrillation, she was electrically cardioverted. She was discharged on guideline-directed medical therapy for her heart failure, with a cardiac surgery referral for the surgical fixation of her ALCAPA.


Asunto(s)
Arteria Coronaria Izquierda Anómala , Fibrilación Atrial , Síndrome de Bland White Garland , Anomalías de los Vasos Coronarios , Insuficiencia Cardíaca , Adulto , Síndrome de Bland White Garland/complicaciones , Síndrome de Bland White Garland/diagnóstico , Síndrome de Bland White Garland/cirugía , Anomalías de los Vasos Coronarios/diagnóstico , Anomalías de los Vasos Coronarios/diagnóstico por imagen , Femenino , Insuficiencia Cardíaca/etiología , Humanos , Arteria Pulmonar/anomalías , Arteria Pulmonar/diagnóstico por imagen , Arteria Pulmonar/cirugía
10.
BMC Infect Dis ; 22(1): 6, 2022 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-34983407

RESUMEN

BACKGROUND: Patients with Inflammatory Bowel Disease (IBD) are at increased risk of serious infections, including vaccine preventable diseases. Current evidence suggests uptake of additional recommended special risk vaccinations is low. Identification of IBD patients prior to commencing immunosuppressive therapy allows for optimisation of vaccination, including timely administration of live-attenuated and additional recommended vaccines, such as influenza and pneumococcal vaccines. METHODS: Paediatric patients (0-18 years) seen at the tertiary Royal Children's Hospital, Melbourne, Australia, with a recent diagnosis of IBD were referred by the Gastroenterology Unit to our Specialist Immunisation Clinic (SIC) for assessment and provision of routine and special risk vaccines. Data was collected via a standardised REDCap questionnaire completed in or post attendance at the SIC and included serology results where available. RESULTS: Sixty-nine paediatric patients were recruited to the study between 2014 and 2017. Median age at IBD diagnosis was 11.25 years (IQR 4.64 years), with median time between diagnosis and SIC review of 0.88 years (IQR 2.84 years). At initial review 84.1% (58/69) of patients were up to date with vaccines on the Australian National Immunisation Program (NIP) schedule. Of those who were tested, serological evidence of immunity was demonstrated in 38.3% (23/60) of patients for Hepatitis B, 66.7% (36/54) for measles, 51.9% (28/54) for rubella and 41.9% (26/62) for Varicella Zoster Virus. Prior to SIC review 47.8% (33/69) had additional vaccinations and 92.8% (64/69) had vaccinations administered in the 12 months following SIC assessment. The Pneumococcal conjugate vaccine (76.8%, 53/69) was the most commonly administered vaccine after SIC review, followed by influenza vaccine (69.6%, 48/69). Within 12 months of SIC review 43.5% (30/69) of patients had completed the schedule and were up-to-date as recommended by the SIC. CONCLUSIONS: Children with IBD and other special risk groups can benefit from early referral to a SIC team to ensure optimal administration of routine and additionally recommended vaccines, especially live and additional special risk vaccines. The value of optimising immunisations could also be applied to other special risk groups, including adult IBD cohorts, particularly those commencing newer biologic immunosuppressive medications.


Asunto(s)
Enfermedades Inflamatorias del Intestino , Vacunas contra la Influenza , Adolescente , Adulto , Australia/epidemiología , Niño , Humanos , Inmunización , Enfermedades Inflamatorias del Intestino/diagnóstico , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Vacunación
11.
Clin Gastroenterol Hepatol ; 20(4): 756-765.e3, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-33549871

RESUMEN

BACKGROUND & AIMS: Tethered capsule endomicroscopy (TCE) involves swallowing a small tethered pill that implements optical coherence tomography (OCT) imaging, procuring high resolution images of the whole esophagus. Here, we demonstrate and evaluate the feasibility and safety of TCE and a portable OCT imaging system in patients with Barrett's esophagus (BE) in a multi-center (5-site) clinical study. METHODS: Untreated patients with BE as per endoscopic biopsy diagnosis were eligible to participate in the study. TCE procedures were performed in unsedated patients by either doctors or nurses. After the capsule was swallowed, the device continuously obtained 10-µm-resolution cross-sectional images as it traversed the esophagus. Following imaging, the device was withdrawn through mouth, and disinfected for subsequent reuse. BE lengths were compared to endoscopy findings when available. OCT-TCE images were compared to volumetric laser endomicroscopy (VLE) images from a patient who had undergone VLE on the same day as TCE. RESULTS: 147 patients with BE were enrolled across all sites. 116 swallowed the capsule (79%), 95/114 (83.3%) men and 21/33 (63.6%) women (P = .01). High-quality OCT images were obtained in 104/111 swallowers (93.7%) who completed the procedure. The average imaging duration was 5.55 ± 1.92 minutes. The mean length of esophagus imaged per patient was 21.69 ± 5.90 cm. A blinded comparison of maximum extent of BE measured by OCT-TCE and EGD showed a strong correlation (r = 0.77-0.79). OCT-TCE images were of similar quality to those obtained by OCT-VLE. CONCLUSIONS: The capabilities of TCE to be used across multiple sites, be administered to unsedated patients by either physicians or nurses who are not expert in OCT-TCE, and to rapidly and safely evaluate the microscopic structure of the esophagus make it an emerging tool for screening and surveillance of BE patients. Clinical trial registry website and trial number: NCT02994693 and NCT03459339.


Asunto(s)
Esófago de Barrett , Neoplasias Esofágicas , Esófago de Barrett/diagnóstico por imagen , Esófago de Barrett/patología , Biopsia , Neoplasias Esofágicas/patología , Esofagoscopía/métodos , Estudios de Factibilidad , Femenino , Humanos , Masculino , Tomografía de Coherencia Óptica/métodos
12.
Artículo en Inglés | MEDLINE | ID: mdl-34574354

RESUMEN

Seeking personal well-being and life satisfaction during a global pandemic can be daunting, such is the case for early care and education teachers who were considered non-health care essential workers during the COVID-19 pandemic. The potential changes in their physical activity, along with their overall physical and psychological well-being, may have ultimately influenced their life satisfaction. These changes included the potential for increased sedentary behaviors. Despite the high health risks associated with these factors during the pandemic, the role of physical activity in early care and education teachers' well-being and life satisfaction remains largely unknown. The purpose of this study is to examine the associations of physical activity and sedentary behaviors with teacher well-being and life satisfaction during the COVID-19 pandemic. In doing so, we explored two competing models of the relationship between the teachers' physical activity, well-being, and life satisfaction, one with physical activity as a mediator and the other with teachers' well-being as a mediator. An online survey, that collected information on physical, psychological, and professional well-being, job demands, and life satisfaction, was completed by 1434 US ECE teachers in 46 states. To test our hypothesized models, we conducted confirmatory factor analyses, followed by structural equation modeling. Of the respondents, 77% were overweight or obese and only 39% met the recommended 150 min of moderate physical activity per week. They had a mean life satisfaction score that qualifies as slight satisfaction, they experience moderate stress, and, collectively, are approaching the threshold for depression yet still reflect moderate-to-high work commitment. The empirical test of our competing mediation models found the model where teacher well-being mediated the association between physical activity, sedentary behavior, and life satisfaction was the superior model. The relationships between physical activity, sedentary behavior, and overall well-being suggest that these modifiable risk factors can be addressed such that early care and education teachers can improve their overall physical and psychological well-being, along with their life satisfaction.


Asunto(s)
COVID-19 , Pandemias , Preescolar , Ejercicio Físico , Humanos , Satisfacción Personal , SARS-CoV-2
13.
Foot (Edinb) ; 48: 101819, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34332395

RESUMEN

Deformities of the lesser toes are one of the most commonly treated conditions by foot and ankle surgeons. Despite their frequency, a standardized classification has yet to take hold among providers. Generic nomenclature with the addition of multiple adjunctive descriptors continues to be the standard leading to international confusion. A literature review was conducted to analyze any literature and/or textbooks pertaining to lesser toe deformity classification systems. Seven sources met the inclusion criteria and were analyzed consisting of novel, modified, and previously published systems. A simplified and treatment driven lesser toe deformity classification utilized at the University of Louisville is introduced, which categorizes these deformities into one of two groups. Type 1 deformities are those isolated to the toe only and Type 2 deformities are toe deformities that include metatarsal phalangeal joint involvement. The intent of the University of Louisville Lesser Toe Deformity Classification (LTDC) is to improve communication and documentation, as well as assist surgical planning. LEVEL OF CLINICAL EVIDENCE: 5.


Asunto(s)
Deformidades del Pie , Articulación Metatarsofalángica , Humanos , Dedos del Pie/cirugía
14.
J Am Podiatr Med Assoc ; 111(3)2021 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-34144577

RESUMEN

Osteomyelitis of the calcaneus combined with a pathologic fracture is a rare and difficult presentation for any practicing foot and ankle surgeon. Treatment for achieving an aseptic nonunion involves a variety of steps, including surgical debridement, antibiotic administration, and fracture stabilization. In this case series, we report a novel technique for the treatment of a tongue-type calcaneal fracture in the setting of chronic osteomyelitis using the Biomet JuggerLoc bone-to-bone system for fixation.


Asunto(s)
Traumatismos del Tobillo , Calcáneo , Fracturas Óseas , Osteomielitis , Calcáneo/diagnóstico por imagen , Calcáneo/cirugía , Fijación Interna de Fracturas , Fracturas Óseas/complicaciones , Fracturas Óseas/cirugía , Humanos , Osteomielitis/complicaciones , Osteomielitis/diagnóstico , Osteomielitis/cirugía , Lengua , Resultado del Tratamiento
15.
J Sch Psychol ; 86: 178-197, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-34051913

RESUMEN

Using a holistic conceptualization of teacher well-being in concert with the Job Demands and Resources (JD-R) framework, our interdisciplinary study examined associations among various job demands and resources and whole teacher well-being (i.e., professional, psychological, and physical well-being) in early care and education settings. First, we investigated direct associations of job demands and resources with teachers' professional well-being. Second, we tested two models of potential mediation for the relationship of job demands and resources to well-being using structural equation modeling techniques: (a) that psychological and physical well-being mediate the relationship between demands, resources, and professional well-being; and (b) that professional well-being mediates the relationship between demands, resources, and psychological and physical well-being. Although our sample of early childhood teachers (n = 262) reported high levels of professional well-being (i.e., work commitment, self-efficacy), a substantial number of them experienced challenges in both psychological (e.g., perceived stress, depressive symptoms) and physical (e.g., ergonomic pain) well-being. As expected, teachers' work-related stressors and work resources (positive work climate, quality of the physical environment) were directly associated with teachers' professional well-being. Contrary to our expectations, however, instrumental resources (i.e, wages, health insurance) did not predict any aspects of teachers' professional well-being. Our data only supported the first of the two tested mediation hypotheses (i.e., that psychological and physical well-being mediated the associations between working conditions and professional well-being), but with one caveat: physical well-being preceded psychological well-being in mediating the associations. These results advance our understanding of the challenges present in the early childhood workforce and have implications for policies and programs to improve teacher working conditions and well-being.


Asunto(s)
Personal Docente , Maestros , Preescolar , Humanos , Autoeficacia
17.
Front Pediatr ; 9: 649775, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33748051

RESUMEN

The incidence of neonatal varicella has decreased dramatically since the introduction of the varicella vaccination. Although the varicella zoster virus is often associated with a mild infection, it may cause severe morbidity and mortality, particularly in the neonatal period and immunocompromised hosts. We report a case of neonatal varicella acquired from maternal zoster in a mother on biological immunosuppressive therapy. Following the diagnosis, the baby improved on antiviral therapy without any neurological sequelae. This case highlights the limited published data on neonatal varicella following herpes zoster reactivation to inform practice. This includes the role of varicella zoster immunoglobulin in neonates exposed to maternal zoster, the degree of trans-placental immunity and optimum antiviral dosing and duration.

18.
Ecotoxicology ; 30(8): 1572-1585, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33459951

RESUMEN

In-depth studies of the microbiome and mobile resistome profile of different environments is central to understanding the role of the environment in antimicrobial resistance (AMR), which is one of the urgent threats to global public health. In this study, we demonstrated the use of a rapid (and easily portable) sequencing approach coupled with user-friendly bioinformatics tools, the MinION (Oxford Nanopore Technologies), on the evaluation of the microbial as well as mobile metal and antibiotic resistome profile of semi-rural wastewater. A total of 20 unique phyla, 43 classes, 227 genera, and 469 species were identified in samples collected from the Amherst Wastewater Treatment Plant, both from primary and secondary treated wastewater. Alpha diversity indices indicated that primary samples were significantly richer and more microbially diverse than secondary samples. A total of 1041 ARGs, 68 MRGs, and 17 MGEs were detected in this study. There were more classes of AMR genes in primary than secondary wastewater, but in both cases multidrug, beta-lactam and peptide AMR predominated. Of note, OXA ß-lactamases, some of which are also carbapenemases, were enriched in secondary samples. Metal resistance genes against arsenic, copper, zinc and molybdenum were the dominant MRGs in the majority of the samples. A larger proportion of resistome genes were located in chromosome-derived sequences except for mobilome genes, which were predominantly located in plasmid-derived sequences. Genetic elements related to transposase were the most common MGEs in all samples. Mobile or MGE/plasmid-associated resistome genes that confer resistance to last resort antimicrobials such as carbapenems and colistin were detected in most samples. Worryingly, several of these potentially transferable genes were found to be carried by clinically-relevant hosts including pathogenic bacterial species in the orders Aeromonadales, Clostridiales, Enterobacterales and Pseudomonadales. This study demonstrated that the MinION can be used as a metagenomics approach to evaluate the microbiome, resistome, and mobilome profile of primary and secondary wastewater.


Asunto(s)
Metales Pesados , Nanoporos , Antibacterianos/farmacología , Farmacorresistencia Microbiana/genética , Genes Bacterianos , Metagenómica , Prevalencia , Aguas Residuales
19.
J Paediatr Child Health ; 57(1): 15-18, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33404128

RESUMEN

Nontuberculous mycobacteria (NTM) are ubiquitous organisms in our surrounding environment. Four distinct clinical syndromes associated with NTM infection have been described: skin and soft tissue disease, lymphadenitis, disseminated disease and pulmonary disease. In children, lymphadenitis is the most common NTM clinical entity, particularly affecting those aged 1-5 years who have no known risk factors for disease. Optimal management of NTM lymphadenitis is not entirely clear, although surgical intervention is likely a definitive therapy. Disseminated NTM disease is uncommon and only seen in the setting of immunocompromise. In previously well children, this presentation should always lead to consideration of an underlying immune defect, such as Mendelian susceptibility to mycobacterial disease. Identification of the underlying cause enables more targeted therapy and better prognostic understanding. Pulmonary NTM disease is fundamentally different to the other clinical syndromes, presenting in different hosts, who have different comorbidities, and follow a different clinical course.


Asunto(s)
Enfermedades Pulmonares , Infecciones por Mycobacterium no Tuberculosas , Niño , Preescolar , Humanos , Lactante , Enfermedades Pulmonares/diagnóstico , Enfermedades Pulmonares/etiología , Enfermedades Pulmonares/terapia , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Infecciones por Mycobacterium no Tuberculosas/tratamiento farmacológico , Infecciones por Mycobacterium no Tuberculosas/epidemiología , Micobacterias no Tuberculosas , Pronóstico , Factores de Riesgo
20.
Respir Physiol Neurobiol ; 284: 103566, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33129988

RESUMEN

Previous evidence from electrophysiological experiments in anaesthetized cats with a chronic lateral lesion of the lower thoracic spinal cord indicated an expansion of the functional projections of expiratory bulbospinal neurones (EBSNs) in the segment above the lesion, measured at 16 weeks post-lesion. Here we investigate connections made by the same EBSNs to motoneurones in that segment, using cross-correlations between their discharges. The connections to the internal intercostal nerve motoneurones were found to be no different from controls. However, a significant increase was found in the number of connections between EBSNs and γ motoneurones of the external intercostal nerve (8/24, compared to 1/16) with possibly additional connections to the α motoneurones of the same nerve. Increased connections to the γ motoneurones of the internal intercostal nerve could not be ruled out. The expanded functional projections are thus likely to include new connections to γ motoneurones. We suggest that γ motoneurones may be inherently more receptive to new inputs. If so, the previously discounted role of abnormal fusimotor discharges in motor disorders would be worth reconsideration.


Asunto(s)
Nervios Intercostales/fisiología , Bulbo Raquídeo/fisiología , Neuronas Motoras/fisiología , Traumatismos de la Médula Espinal/fisiopatología , Animales , Gatos , Femenino , Masculino
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