RESUMEN
BACKGROUND: The shortage of available organs for life-saving transplants persists worldwide. While a majority support donating their organs or tissue when they die, many have not registered their wish to do so. When registered, next of kin are much more likely to follow-through with the decision to donate. In many countries, most people visit their family physician office each year and this setting is a promising, yet underused, site where more people could register for deceased organ donation. Our primary aim was to evaluate the effectiveness of an intervention to promote organ donation registration in family physician's offices. METHODS: We developed an intervention to address barriers and enablers to organ donation registration that involved physician office reception staff inviting patients to register on a tablet in the waiting room while they waited for their appointment. We conducted a cross-sectional stepped-wedge cluster randomized controlled registry trial to evaluate the intervention. We recruited six family physician offices in Canada. All offices began with usual care and then every two weeks, one office (randomly assigned) started the intervention until all offices delivered the intervention. The primary outcome was registration for deceased organ donation in the provincial organ registration registry, assessed within the 7 days of the physician visit. At the end of the trial, we also conducted interviews with clinic staff to assess any barriers and enablers to delivering the intervention. RESULTS: The trial involved 24,616 patient visits by 13,562 unique patients: 12,484 visits in the intervention period and 12,132 in the control period. There was no statistically significant difference in the percentage of patients registered for deceased organ donation in the intervention versus control period (48.0% vs 46.2%; absolute difference after accounting for the secular trend: 0.12%; 95% CI: - 2.30, 2.54; p=0.92). Interviews with clinic staff indicated location of the tablet within a waiting room, patient rapport, existing registration, confidence and motivation to deliver the intervention and competing priorities as barriers and enablers to delivery. CONCLUSIONS: Our intervention did not increase donor registration. Nonetheless, family physician offices may still remain a promising setting to develop and evaluate better interventions to increase organ donation registration. TRIAL REGISTRATION: NCT03213171.
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Médicos de Familia , Obtención de Tejidos y Órganos , Estudios Transversales , Humanos , Sistema de Registros , Salas de EsperaRESUMEN
BACKGROUND: Although most health facilities in urban Nigeria are privately owned, interventions to promote optimal breastfeeding practices in private facilities have not previously been implemented. OBJECTIVES: We tested the impact of a breastfeeding promotion intervention on early initiation of breastfeeding and exclusive breastfeeding among clients of private facilities in Lagos, Nigeria. METHODS: The intervention included training for health-care providers on the Baby-Friendly Hospital Initiative and breastfeeding counseling skills, provision of interpersonal communication and support to women at facilities and on WhatsApp, distribution of behavior change communication materials, and mobile phone and mass media messaging. We used logistic regression models adjusted for clustering to measure intervention impact in a cohort of women (n = 1200) at 10 intervention and 10 comparison facilities interviewed during their third trimester and at 6 and 24 weeks postpartum. RESULTS: The intervention significantly increased the percentage of infants who were exclusively breastfed at 6 weeks (83% intervention; 76% comparison; P = 0.02) and 24 weeks (66% intervention; 52% comparison; P < 0.001), but had no impact on early initiation of breastfeeding (35% intervention; 33% comparison; P = 0.65). Among infants who were exclusively breastfed at 6 weeks, the odds of continued exclusive breastfeeding at 24 weeks were higher in the intervention arm than in the comparison arm (OR, 1.6; 95% CI: 1.2-2.1). Infants had increased odds of being exclusively breastfed at 6 weeks if their mothers discussed breastfeeding with a private health provider (OR, 2.3; 95% CI: 1.5-3.4), received text or WhatsApp messages about breastfeeding (OR, 1.7; 95% CI: 1.0-2.7), or heard breastfeeding radio spots (OR, 4.2; 95% CI: 1.2-14.7). Infants had increased odds of exclusive breastfeeding at 24 weeks if their mothers participated in a WhatsApp breastfeeding support group (OR, 1.5; 95% CI: 1.0-2.2). CONCLUSIONS: A breastfeeding intervention in private health facilities in Lagos increased exclusive breastfeeding. Implementation of breastfeeding interventions in private facilities could extend the reach of breastfeeding promotion programs in urban Nigeria. This trial was registered at clinicaltrials.gov as NCT04835051.
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Lactancia Materna , Teléfono Celular , Lactancia Materna/psicología , Comunicación , Femenino , Instituciones de Salud , Humanos , Lactante , Medios de Comunicación de Masas , Nigeria , Instalaciones PrivadasRESUMEN
Many international medical graduates (IMGs) enter North American residency programs every year. The Canadian IMG physician pool increasingly includes Canadian-born IMGs (C-IMGs) along with Immigrant-IMGs (I-IMGs). Similar trends exist in the United States. Our objective was to understand the similarities and differences in the challenges faced by both I-IMGs and C-IMGs during residency to identify actionable recommendations to support them during this critical time. We performed a multiple case study of IMGs' experiences at a large Canadian university. Within our two descriptive cases (I-IMGs, C-IMGs) we iteratively conducted twenty-two semi-structured interviews; we thematically analyzed our data within, between, and across both cases to understand challenges to IMGs' integration and opportunities for curricular innovations to facilitate their adaptation process. Research team members with different perspectives contributed reflexively to the thematic analysis. Participants identified key differences between medical culture and knowledge expected in Canada and the health systems and curricula in which they originally trained. I-IMG and C-IMG participants perceived two major challenges: discrimination because of negative labelling as IMGs and difficulties navigating their initial residency months. C-IMGs described a third challenge: frustration around the focus on the needs of I-IMGs. Participants from both groups identified two major opportunities: their desire to help other IMGs and a need for mentorship. I-IMGs and C-IMGs face diverse challenges during their training, including disorientation and discrimination. We identified specific objectives to inform the design of curriculum and support services that residency programs can offer trainees as well as important targets for resident education and faculty development.
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Emigrantes e Inmigrantes/psicología , Médicos Graduados Extranjeros/psicología , Internado y Residencia/organización & administración , Canadá , Competencia Clínica/normas , Características Culturales , Ambiente , Humanos , Relaciones Interpersonales , Entrevistas como Asunto , Prejuicio/psicología , Normas Sociales/etnología , Factores Socioeconómicos , Estados UnidosRESUMEN
BACKGROUND: Sharing information about learners during training is seen as an important component supporting learner progression and relevant to patient safety. Shared information may cover topics from accommodation requirements to unprofessional behavior. The purpose of this study was to determine the views of key stakeholders on a proposed national information sharing process during the transition from undergraduate to postgraduate medical education in Canada, termed the Learner Education Handover (LEH). METHOD: Key stakeholder groups including medical students, resident physicians, residency program directors, medical regulatory authority representatives, undergraduate medical education deans, student affairs leaders, postgraduate medical education deans participated in focus groups conducted via teleconference. Data were transcribed and coded independently by two coders, then analyzed for themes informed by principles of constructivist grounded theory. RESULTS: Sixty participants (33 males and 27 females) from 16 focus groups representing key stakeholder groups participated. Most recognized value in a national LEH that would facilitate a smooth learner transition from medical school to residency. Potential risks and benefits of the LEH were identified. Themes significant to the content, process and format of the LEH also emerged. Guiding principles of the LEH process were determined to include that it be learner-centered while supporting patient safety, resident wellness and professional behavior. The learner and representatives from their undergraduate medical education environment would each contribute to the LEH. CONCLUSIONS: The LEH must advocate for the learner with respect for learner privacy, while promoting professionalism, patient safety and learner wellness.
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Educación Médica , Evaluación Educacional/estadística & datos numéricos , Difusión de la Información , Competencia Profesional/estadística & datos numéricos , Canadá , Comunicación , Curriculum , Grupos Focales , Humanos , Difusión de la Información/ética , Seguridad del Paciente , Participación de los InteresadosRESUMEN
Hagfish consume carrion, potentially exposing them to hypoxia, hypercapnia, and high environmental ammonia (HEA). We investigated branchial and cutaneous ammonia handling strategies by which Pacific hagfish (Eptatretus stoutii) tolerate and recover from high ammonia loading. Hagfish were exposed to HEA (20 mmol/l) for 48 h to elevate plasma total ammonia (TAmm) levels before placement into divided chambers for a 4-h recovery period in ammonia-free seawater where ammonia excretion (JAmm) was measured independently in the anterior and posterior compartments. Localized HEA exposures were also conducted by subjecting hagfish to HEA in either the anterior or posterior compartments. During recovery, HEA-exposed animals increased JAmm in both compartments, with the posterior compartment comprising ~20% of the total JAmm compared with ~11% in non-HEA-exposed fish. Plasma TAmm increased substantially when whole hagfish and the posterior regions were exposed to HEA. Alternatively, plasma TAmm did not elevate after anterior localized HEA exposure. JAmm was concentration dependent (0.05-5 mmol/l) across excised skin patches at up to eightfold greater rates than in skin sections that were excised from HEA-exposed hagfish. Skin excised from more posterior regions displayed greater JAmm than those from more anterior regions. Immunohistochemistry with hagfish-specific anti-rhesus glycoprotein type c (α-hRhcg; ammonia transporter) antibody was characterized by staining on the basal aspect of hagfish epidermis while Western blotting demonstrated greater expression of Rhcg in more posterior skin sections. We conclude that cutaneous Rhcg proteins are involved in cutaneous ammonia excretion by Pacific hagfish and that this mechanism could be particularly important during feeding.
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Adaptación Fisiológica/fisiología , Amoníaco/farmacocinética , Eliminación Cutánea/fisiología , Branquias/metabolismo , Anguila Babosa/fisiología , Piel/metabolismo , Animales , Tolerancia a Medicamentos/fisiología , Epitelio/metabolismoRESUMEN
Hagfishes, the most ancient of the extant craniates, demonstrate a high tolerance for a number of unfavorable environmental conditions, including elevated ammonia. Proposed mechanisms of ammonia excretion in aquatic organisms include vesicular NH(4)(+) transport and release by exocytosis in marine crabs, and passive NH(3) diffusion, active NH(4)(+) transport, and paracellular leakage of NH3 or NH(4)(+) across the gills of fishes. Recently, an emerging paradigm suggests that Rhesus glycoproteins play a vital role in ammonia transport in both aquatic invertebrates and vertebrates. This study has identified an Rh glycoprotein ortholog from the gills of Atlantic hagfish. The hagfish Rhcg shares a 56-60% amino acid identity to other vertebrate Rhcg cDNAs. Sequence information was used to produce an anti-hagfish Rhcg (hRhcg) antibody. We have used hRhcg to localize protein expression to epithelial cells of the gill and the skin. In addition, we have quantified hRhcg expression following exposure to elevated plasma ammonia levels. Animals exposed to a 3 mmol/kg NH(4)Cl load resulted in significantly elevated plasma ammonia concentrations compared with controls for up to 4 h postinjection. This correlated with net ammonia excretion rates that were also significantly elevated for up to 4 h postinjection. Rhcg mRNA expression in both the gill and skin was significantly elevated by 15 min and 1 h, respectively, and hRhcg protein expression in gills was significantly elevated at 2, 4, and 8 h postinjection. These results demonstrate a potential role for Rhcg in the excretion of ammonia in the Atlantic hagfish.
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Amoníaco/metabolismo , Proteínas de Transporte de Catión/metabolismo , Anguila Babosa/metabolismo , Glicoproteínas de Membrana/metabolismo , Animales , Proteínas de Transporte de Catión/genética , Clonación Molecular , Regulación de la Expresión Génica/fisiología , Branquias/metabolismo , Glicoproteínas de Membrana/genética , Filogenia , ARN Mensajero/genética , ARN Mensajero/metabolismo , Agua/químicaRESUMEN
TLR7 agonists modulate Th2 immune responses through mechanisms that have not been fully elucidated. Suppression of IL-5 production from Ag- or phytohemagglutinin-stimulated human PBMCs by the TLR7 antedrug AZ12441970 was mediated via type I IFN-dependent and type I IFN-independent mechanisms through TLR7 activation of plasmacytoid dendritic cells, B cells, and monocytes. The type I IFN-dependent inhibition of T cell-derived IL-5 was mediated by IFN-α acting directly on activated T cells. IL-10 was shown not to be involved in the type I IFN-independent inhibition of IL-5 and the mechanism of inhibition required cell-cell interaction. Notch signaling was implicated in the inhibition of IL-5, because addition of a γ-secretase inhibitor blocked the type I IFN-independent suppression of IL-5. Accordingly, AZ12441970 induced high levels of the notch ligands Dll1 and Dll4 mRNA, whereas immobilized DLL4 resulted in the suppression of IL-5 production. Therefore, we have elucidated two mechanisms whereby TLR7 agonists can modulate IL-5 production in human T cells. The suppression of Th2 cytokines, including IL-5, would be of benefit in diseases such as atopic asthma, so we assessed TLR7 function in PBMC from asthmatics and showed equivalent activity compared with healthy volunteers. Demonstrating this function is intact in asthmatics and knowing it links to suppression of Th2 cytokines support the case for developing such compounds for the treatment of allergic disease.
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Células Presentadoras de Antígenos/inmunología , Células Presentadoras de Antígenos/metabolismo , Interferón Tipo I/fisiología , Interleucina-5/antagonistas & inhibidores , Leucocitos Mononucleares/inmunología , Receptores Notch/fisiología , Transducción de Señal/inmunología , Receptor Toll-Like 7/fisiología , Células Cultivadas , Humanos , Interferón Tipo I/sangre , Interleucina-5/biosíntesis , Interleucina-5/sangre , Leucocitos Mononucleares/metabolismo , Activación de Linfocitos/inmunología , Receptores Notch/sangre , Receptor Toll-Like 7/sangreRESUMEN
BACKGROUND: Ovarian cancer arising in women with BRCA mutations is known to have a more favorable outcome and to be more responsive to platinum-based regimens than in those without a hereditary background. We analyze our previously published intraperitoneal (IP) studies in relation to BRCA mutation status and update their outcomes. METHODS: Among 62 patients with ovarian cancer enrolled in IP platinum doublet studies in clinical trials (with etoposide (n = 18), with floxuridine (n = 30), and with topotecan (n = 14)), a deleterious BRCA mutation was eventually identified in 10 patients. The outcomes in these BRCA mutation carriers are described and compared with survival of others in respective trials. RESULTS: Ten patients that were confirmed to have BRCA mutations-all with high-grade and stages IIC to IV disease-survived a median of 10 years (range: 4-18+) after receiving IP cisplatin-based regimens. Two continue with no evidence of disease since their IP treatment, while four others remain alive with recurrences after 8, 9, 10, and 11 years, respectively. CONCLUSIONS: This experience suggests that IP cisplatin leads to favorable long term outcomes in advanced ovarian cancer in women with defective homologous recombination (i.e., with deleterious BRCA mutations). Whether such cisplatin dose-intensification from IP relative to (intravenous) IV drug administration leads to superior results in these mutation carriers requires further study.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Proteína BRCA1/genética , Proteína BRCA2/genética , Cistadenocarcinoma Seroso/tratamiento farmacológico , Mutación/genética , Recurrencia Local de Neoplasia/tratamiento farmacológico , Neoplasias Ováricas/tratamiento farmacológico , Anciano , Carboplatino/administración & dosificación , Cisplatino/administración & dosificación , Ensayos Clínicos Fase I como Asunto , Ensayos Clínicos Fase II como Asunto , Cistadenocarcinoma Seroso/genética , Cistadenocarcinoma Seroso/mortalidad , Etopósido/administración & dosificación , Femenino , Floxuridina/administración & dosificación , Estudios de Seguimiento , Heterocigoto , Humanos , Inyecciones Intraperitoneales , Persona de Mediana Edad , Clasificación del Tumor , Recurrencia Local de Neoplasia/genética , Recurrencia Local de Neoplasia/mortalidad , Neoplasias Ováricas/genética , Neoplasias Ováricas/mortalidad , Pronóstico , Tasa de Supervivencia , Topotecan/administración & dosificaciónRESUMEN
Triggering innate immune responses through TLRs is expected to be a novel therapeutic strategy for the treatment of allergic diseases. TLR agonists are able to modulate Th2 immune responses through undefined mechanisms. We investigated the mechanism of action of the suppression of Th2 immune responses with a novel antedrug TLR7 agonist. The antedrug is rapidly metabolized by plasma esterases to an acid with reduced activity to limit systemic responses. Topical administration of this compound inhibited features of the allergic airway inflammatory response in rat and murine allergic airways model. Type I IFN played a role in the suppression of Th2 cytokines produced from murine splenocytes. Inhibition of Th2 immune responses with the antedrug TLR7 agonist was shown to be via a type I IFN-dependent mechanism following short-term exposure to the compound, although there might be type I IFN-independent mechanisms following long-term exposure. We have demonstrated that local type I IFN signaling and plasmacytoid dendritic cells, but not Th1 immune responses, are required for in vivo efficacy against murine airway Th2-driven eosinophilia. Furthermore, migration of dendritic cell subsets into the lung was related to efficacy and is dependent on type I IFN signaling. Thus, the mechanism of action at the cytokine and cellular level involved in the suppression of Th2 allergic responses has been characterized, providing a potential new approach to the treatment of allergic disease.
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Antiinflamatorios no Esteroideos/administración & dosificación , Profármacos/administración & dosificación , Sistema Respiratorio/efectos de los fármacos , Receptor Toll-Like 7/agonistas , Administración Tópica , Animales , Antiinflamatorios no Esteroideos/síntesis química , Antiinflamatorios no Esteroideos/metabolismo , Linfocitos B/citología , Linfocitos B/efectos de los fármacos , Linfocitos B/inmunología , Línea Celular , Movimiento Celular/efectos de los fármacos , Células Dendríticas/citología , Células Dendríticas/efectos de los fármacos , Células Dendríticas/inmunología , Eosinofilia/complicaciones , Eosinofilia/tratamiento farmacológico , Eosinofilia/inmunología , Eosinofilia/metabolismo , Genes Reporteros , Humanos , Inmunidad Innata , Interferón Tipo I/inmunología , Interferón Tipo I/metabolismo , Ratones , Profármacos/síntesis química , Profármacos/metabolismo , Ratas , Hipersensibilidad Respiratoria/complicaciones , Hipersensibilidad Respiratoria/tratamiento farmacológico , Hipersensibilidad Respiratoria/inmunología , Hipersensibilidad Respiratoria/metabolismo , Sistema Respiratorio/inmunología , Sistema Respiratorio/metabolismo , Transducción de Señal/efectos de los fármacos , Bazo/citología , Bazo/inmunología , Células Th2/citología , Células Th2/efectos de los fármacos , Células Th2/inmunología , Receptor Toll-Like 7/inmunologíaRESUMEN
BACKGROUND: This paper details the research protocol for a study funded by the Australian Research Council. An integrated approach towards helping young children respond to the significant pressures of '360 degree marketing' on their food choices, levels of active play, and sustainability consciousness via the early childhood curriculum is lacking. The overall goal of this study is to evaluate the efficacy of curriculum interventions that educators design when using a pedagogical communication strategy on children's knowledge about healthy eating, active play and the sustainability consequences of their toy food and toy selections. METHODS/DESIGN: This cluster-randomised trial will be conducted with 300, 4 to 5 year-old children attending pre-school. Early childhood educators will develop a curriculum intervention using a pedagogical communication strategy that integrates content knowledge about healthy eating, active play and sustainability consciousness and deliver this to their pre-school class. Children will be interviewed about their knowledge of healthy eating, active play and the sustainability consequences of their food and toy selections. Parents will complete an Eating and Physical Activity Questionnaire rating their children's food preferences, digital media viewing and physical activity habits. All measures will be administered at baseline, the end of the intervention and 6 months post intervention. Informed consent will be obtained from all parents and the pre-school classes will be allocated randomly to the intervention or wait-list control group. DISCUSSION: This study is the first to utilise an integrated pedagogical communication strategy developed specifically for early childhood educators focusing on children's healthy eating, active play, and sustainability consciousness. The significance of the early childhood period, for young children's learning about healthy eating, active play and sustainability, is now unquestioned. The specific teaching and learning practices used by early childhood educators, as part of the intervention program, will incorporate a sociocultural perspective on learning; this perspective emphasises building on the play interests of children, that are experienced within the family and home context, as a basis for curriculum provision. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12614000363684: Date registered: 07/04/2014.
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Dieta , Promoción de la Salud , Actividad Motora , Obesidad Infantil/prevención & control , Australia , Protección a la Infancia , Preescolar , Curriculum , Conducta Alimentaria , Femenino , Humanos , Masculino , Juego e Implementos de Juego , Servicios de Salud Escolar , Encuestas y CuestionariosRESUMEN
Parental anxiety is a risk to optimal treatment outcomes for childhood anxiety disorders. The current trial examined whether the addition of a brief parental anxiety management (BPAM) program to family cognitive behavioral therapy (CBT) was more efficacious than family CBT-only in treating childhood anxiety disorders. Two hundred nine children (aged 6-13 years, 104 female, 90% Caucasian) with a principal anxiety disorder were randomly allocated to family CBT with a five-session program of BPAM (n = 109) or family CBT-only (n = 100). Family CBT comprised the Cool Kids program, a structured 12-week program that included both mothers and fathers. Overall, results revealed that the addition of BPAM did not significantly improve outcomes for the child or the parent compared to the CBT-only group at posttreatment or 6-month follow-up. Overall, however, children with nonanxious parents were more likely to be diagnosis free for any anxiety disorder compared to children with anxious parents at posttreatment and 6-month follow-up. BPAM did not produce greater reductions in parental anxiety. The results support previous findings that parent anxiety confers poorer treatment outcomes for childhood anxiety disorders. Nevertheless the addition of BPAM anxiety management for parents in its current format did not lead to additional improvements when used as an adjunct to family CBT in the treatment of the child's anxiety disorder. Future benefits may come from more powerful methods of reducing parents' anxiety.
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Trastornos de Ansiedad/terapia , Terapia Cognitivo-Conductual/métodos , Terapia Familiar/métodos , Relaciones Padres-Hijo , Padres/psicología , Adolescente , Ansiedad/psicología , Ansiedad/terapia , Trastornos de Ansiedad/diagnóstico , Trastornos de Ansiedad/psicología , Niño , Femenino , Humanos , Entrevistas como Asunto , Masculino , Resultado del TratamientoRESUMEN
There is mounting evidence that current food production, transport, land use and urban design negatively impact both climate change and obesity outcomes. Recommendations to prevent climate change provide an opportunity to improve environmental outcomes and alter our food and physical activity environments in favour of a 'healthier' energy balance. Hence, setting goals to achieve a more sustainable society offers a unique opportunity to reduce levels of obesity. In the case of children, this approach is supported with evidence that even from a young age they show emerging understandings of complex environmental issues and are capable of both internalizing positive environmental values and influencing their own environmental outcomes. Given young children's high levels of environmental awareness, it is easy to see how environmental sustainability messages may help educate and motivate children to make 'healthier' choices. The purpose of this paper is to highlight a new approach to tackling childhood obesity by tapping into existing social movements, such as environmental sustainability, in order to increase children's motivation for healthy eating and physical activity behaviours and thus foster more wholesome communities. We contend that a social marketing framework may be a particularly useful tool to foster behaviour change beneficial to both personal and environmental health by increasing perceived benefits and reducing perceived costs of behaviour change. Consequently, we propose a new framework which highlights suggested pathways for helping children initiate and sustain 'healthier' behaviours in order to inform future research and potentially childhood obesity intervention strategies.
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Promoción de la Salud/métodos , Obesidad/prevención & control , Medio Social , Mercadeo Social , Niño , Conducta de Elección , Cambio Climático , Preferencias Alimentarias , Humanos , Motivación , Actividad MotoraRESUMEN
The design of functional neuroimaging studies investigating the neural changes that support treatment-based recovery of targeted language functions in acquired aphasia faces a number of challenges. In this paper, we discuss these challenges and focus on experimental tasks and experimental designs that can be used to address the challenges, facilitate the interpretation of results and promote integration of findings across studies.
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Afasia/patología , Cognición/fisiología , Neuroimagen/métodos , Humanos , Lenguaje , Imagen por Resonancia Magnética/métodosRESUMEN
This study aims to illustrate potential transport mechanisms behind the divergent approaches to nitrogen excretion seen in the ureotelic toadfish (Opsanus beta) and the ammoniotelic plainfin midshipman (Porichthys notatus). Specifically, we wish to confirm the expression of a urea transporter (UT), which is found in the gill of the toadfish and which is responsible for the unique "pulsing" nature of urea excretion and to localize the transporter within specific gill cells and at specific cellular locations. Additionally, the localization of ammonia transporters (Rhesus glycoproteins; Rhs) within the gill of both the toadfish and midshipman was explored. Toadfish UT (tUT) was found within Na(+)-K(+)-ATPase (NKA)-enriched cells, i.e., ionocytes (probably mitochondria-rich cells), especially along the basolateral membrane and potentially on the apical membrane. In contrast, midshipman UT (pnUT) immunoreactivity did not colocalize with NKA immunoreactivity and was not found along the filaments but instead within the lamellae. The cellular location of Rh proteins was also dissimilar between the two fish species. In toadfish gills, the Rh isoform Rhcg1 was expressed in both NKA-reactive cells and non-reactive cells, whereas Rhbg and Rhcg2 were only expressed in the latter. In contrast, Rhbg, Rhcg1 and Rhcg2 were expressed in both NKA-reactive and non-reactive cells of midshipman gills. In an additional transport epithelium, namely the intestine, the expression of both UTs and Rhs was similar between the two species, with only subtle differences being observed.
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Amoníaco/metabolismo , Batrachoidiformes/metabolismo , Proteínas de Peces/metabolismo , Proteínas de Transporte de Membrana/metabolismo , Urea/metabolismo , Animales , Anticuerpos/metabolismo , Western Blotting , Perros , Glicoproteínas/metabolismo , Inmunohistoquímica , Células de Riñón Canino Madin Darby , Reproducibilidad de los Resultados , ATPasa Intercambiadora de Sodio-Potasio/metabolismo , Transformación Genética , Transportadores de UreaAsunto(s)
Conducta Infantil/fisiología , Protección a la Infancia , Adhesión a Directriz/estadística & datos numéricos , Guías como Asunto , Tiempo de Pantalla , Adolescente , Conducta del Adolescente/fisiología , Niño , Preescolar , Femenino , Humanos , Masculino , Evaluación de Necesidades , Formulación de Políticas , Medición de RiesgoRESUMEN
BACKGROUND: Several studies in recent years have indicated a link between socio-economic status (SES) of families and children's language development, including studies that have measured children's language through formal standardized test procedures. High numbers of children with low performance have been found in lower socio-economic groups in some studies. This has proved a cause for concern for both clinicians and educationalists. AIMS: To investigate the relationship between maternal education and postcode-related indicators of SES, and children's performance on the New Reynell Developmental Scales (NRDLS). METHODS & PROCEDURES: Participants were 1266 children aged between 2;00 and 7;06 years who were recruited for the standardization of a new assessment procedure (NRDLS). Children were divided into four groups reflecting years of maternal education, and five groups reflecting SES Index of Multiple Deprivation (IMD) quintiles for the location of participating schools and nurseries. Groups were compared using analysis of covariance (ANCOVA), with age as a covariate, in order to identify which might be affected by the two SES variables. Where relationships were found between SES and performance on the scales, individual children's standard scores were looked at to determine numbers potentially at risk for language delay. OUTCOMES & RESULTS: An effect of years of maternal education on performance was found such that children whose mothers had minimum years performed less well than other children in the study, this effect being stronger for younger children. Children attending schools or nurseries in IMD quintile 1 areas performed less well in language production. Higher than expected numbers with language delay were found for younger children whose mothers had minimum years of education, and for children in quintile 1 schools and nurseries; however, numbers were not as high as noted in some other studies. CONCLUSIONS & IMPLICATIONS: Characteristics of the participant sample and measures used for language and SES may explain these results and are important considerations when interpreting results of studies or developing policies for intervention. The usefulness of commonly used categories of language delay is questioned.
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Lenguaje Infantil , Trastornos del Desarrollo del Lenguaje/diagnóstico , Trastornos del Desarrollo del Lenguaje/epidemiología , Desarrollo del Lenguaje , Pruebas del Lenguaje/estadística & datos numéricos , Madres/estadística & datos numéricos , Adulto , Niño , Preescolar , Escolaridad , Inglaterra/epidemiología , Femenino , Humanos , Masculino , Factores de Riesgo , Clase Social , Gales/epidemiología , Espera VigilanteRESUMEN
BACKGROUND & AIMS: A recent systematic review of conversation training for communication partners of people with aphasia has shown that it is effective, and improves participation in conversation for people with chronic aphasia. Other research suggests that people with aphasia are better able to learn communication strategies in an environment which closely mirrors that of expected use, and that cognitive flexibility may be a better predictor of response to therapy than severity of language impairment. This study reports results for a single case, one of a case series evaluation of a programme of conversation training for agrammatism that directly involves a person with aphasia (PWA) as well as their communication partner. It explores how a PWA is able to engage with and learn from the therapy, and whether this leads to qualitative change in post-therapy conversation behaviours. METHODS & PROCEDURES: A 55-year-old man with chronic agrammatism and his wife took part in eight weekly sessions of conversation therapy, adapted from Supporting Partners of People With Aphasia in Relationships and Conversation (SPPARC). Language and conversation were assessed before and after therapy, and the couple's views on conversation and disability were elicited. Conversation analysis was used to analyse: (1) pre-therapy conversation patterns, (2) how the PWA engaged and learned during therapy and the forms of facilitation that aided this process, and (3) qualitative change in post-therapy conversation behaviour. OUTCOMES & RESULTS: After therapy, the PWA showed increased insight and acceptance of the use of strategies such as writing and drawing in the face of conversational difficulty. However, use was prompted by his wife and was rarely spontaneous. CONCLUSIONS & IMPLICATIONS: This single case study suggests that conversation training based around an experiential learning process is able to engage a PWA directly in learning about the effects of aphasia on conversation. Key facilitators were self-study via video and experience of practising conversation whilst receiving online feedback from a speech and language therapist. However, increased insight did not automatically change conversation behaviour. Although he better understood the effects of his aphasia on conversations with his wife, learning stopped short of the ultimate goal of the conversation training programme; the spontaneous use of strategies worked on in therapy when faced with conversation breakdown. One explanation may be that limited cognitive flexibility lead to problems with switching from one strategy to another.
Asunto(s)
Afasia de Broca/terapia , Comunicación , Terapia del Lenguaje/métodos , Cognición , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Psicolingüística , Esposos , Resultado del Tratamiento , Aprendizaje Verbal , EscrituraRESUMEN
BACKGROUND: It is generally understood that trainees experience periods of heightened stress during first year residency, yet there is little information on variations in stress and well-being over the transition period or those factors that contribute to these variations. This qualitative study explored the trajectory of well-being described by first year residents in the context of challenges, supports and adaptations over time. METHODS: In-depth interviews were conducted face-to-face with 17 first year residents at the University of Toronto. Participants drew a graph of their well-being over the course of their first year and described critical periods of challenge and adaptation. Interviews were audio-taped and transcribed. Results were organized into a thematic analysis using NVivo software. RESULTS: Residents described a pattern of well-being that varied in accordance with changes in rotations. Well-being increased when residents perceived high levels of team support, felt competent and experienced valued learning opportunities. Well-being decreased with low team support, heavy work demands, few learning opportunities and poor orientations. Anxiety and excitement in the beginning of the year gave way to heightened confidence but increased fatigue and apathy towards the year's end. Residents used a number of cognitive, behavioural and self-care strategies to cope with transitional challenges. CONCLUSIONS: Residents experienced a pattern of highly fluctuating well-being that coincided with changes in rotations. Residents' well-being varied according to levels of supervisor and colleague support, learning opportunities, and work demands. Residents' well-being may be improved by program interventions that facilitate better team and supervisory supports, maintain optimal service to learning ratios, establish effective fatigue and risk management systems, offer wellness support services and integrate skills based resiliency training into the curriculum.
Asunto(s)
Adaptación Psicológica , Internado y Residencia/estadística & datos numéricos , Adulto , Femenino , Humanos , Internado y Residencia/organización & administración , Entrevistas como Asunto , Masculino , Investigación Cualitativa , Apoyo Social , Estrés Psicológico/epidemiologíaRESUMEN
The application of Conversation Analysis (CA) to the investigation of agrammatic aphasia reveals that utterances produced by speakers with agrammatism engaged in everyday conversation differ significantly from utterances produced in response to decontextualised assessment and therapy tasks. Early studies have demonstrated that speakers with agrammatism construct turns from sequences of nouns, adjectives, discourse markers and conjunctions, packaged by a distinct pattern of prosody. This article presents examples of turn construction methods deployed by three people with agrammatism as they take an extended turn, in order to recount a past event, initiate a discussion or have a disagreement. This is followed by examples of sequences occurring in the talk of two of these speakers that result in different, and more limited, turn construction opportunities, namely "test" questions asked in order to initiate a new topic of talk, despite the conversation partner knowing the answer. The contrast between extended turns and test question sequences illustrates the effect of interactional context on aphasic turn construction practices, and the potential of less than optimal sequences to mask turn construction skills. It is suggested that the interactional motivation for test question sequences in these data are to invite people with aphasia to contribute to conversation, rather than to practise saying words in an attempt to improve language skills. The idea that test question sequences may have their origins in early attempts to deal with acute aphasia, and the potential for conversation partnerships to become "stuck" in such interactional patterns after they may have outlived their usefulness, are discussed with a view to clinical implications.