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1.
Prehosp Emerg Care ; 27(7): 851-858, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-35771727

RESUMEN

OBJECTIVE: To describe and compare characteristics of ambulance attendances for older adults with and without dementia. METHODS: A retrospective cohort study was conducted using electronic patient care records from the main ambulance service in Western Australia. All attendances for people aged 65 years or older in the years 2019-21 were included. Dementia status was adjudicated from the clinical history and medication lists. Patient and case characteristics of those with and without dementia were compared and stratified by type of residence. RESULTS: There were 277,996 emergency ambulance attendances made by 124,711 older adults, of whom 23.5% had dementia. The mean number of attendances per person was 3.3 in the dementia cohort vs 2.0 in those without dementia. Falls were the leading reason for ambulance attendance. People with dementia were significantly frailer, required longer at-scene intervals, were less likely to be transported as the highest priority, and had lower 30-day survival. CONCLUSIONS: Dementia is common amongst older adults attended by paramedics and is associated with higher ambulance utilization per person. People with dementia attended by paramedics have stronger signals of vulnerability, such as increased frailty. As the number of people living with dementia increases in the future, there are implications for workforce training and service planning. There are opportunities for developing alternatives to emergency department transportation for some people with dementia.


Asunto(s)
Demencia , Servicios Médicos de Urgencia , Humanos , Anciano , Ambulancias , Australia Occidental/epidemiología , Estudios Retrospectivos , Demencia/epidemiología
2.
Fetal Pediatr Pathol ; 42(3): 355-366, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36106665

RESUMEN

Introduction: Pediatric DLBCL is considered a homogenous group and has superior outcomes compared to adults. This study investigated the clinical pathology and immunohistochemical distinction between adult and pediatric large B-cell lymphoma. Methods: A cross-sectional study of 314 NHLs with the morphology of diffuse pattern, large B-cell, and CD20 expression was investigated. Results: Of 314 cases, there were 6 cases of pleomorphic MCL (all in adults), 19 cases of Burkitt lymphoma (all in children), and 289 cases of DLBCL. Pediatric DLBCL had many striking differences: More frequency in extra-nodal sites; a higher proportion of centroblastic morphology; a predominance of GCB-type; a high proliferation rate; an infrequency of Bcl2 protein expression, and a lack of double-expresser lymphoma. Conclusions: Our study demonstrated the significant biological differences between adult and pediatric DLBCL.


Asunto(s)
Linfoma de Células B Grandes Difuso , Humanos , Adulto , Niño , Estudios Transversales , Linfoma de Células B Grandes Difuso/diagnóstico , Linfoma de Células B Grandes Difuso/metabolismo , Linfoma de Células B Grandes Difuso/patología , Pronóstico
3.
World J Surg ; 46(10): 2377-2388, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35802159

RESUMEN

BACKGROUND: Emphysematous pyelonephritis (EP) is a severe necrotizing infection of the renal parenchyma which is associated with significant case mortality. We sought to identify the incidence and predictive risk factors associated with EP mortality. METHODS: Two electronic databases, PubMed and Web of Science, were searched from their inception until June 06, 2021 for relevant articles. Two independent teams reviewed abstracts and extracted data from the selected manuscripts. A meta-analysis has been reported in line with PRISMA 2020 and AMSTAR Guidelines. RESULTS: Of the 1080 retrieved abstracts, 79 underwent full-text review and 45 studies were included in the final analysis, comprising a total cohort of 1303 patients and 177 mortalities. The pooled prevalence of mortality among the patients with EP disease was 13%. Our analysis found a significantly decreasing trend in mortality rates, an increasing trend in minimally invasive intervention and decreasing trends in emergency nephrectomy in the EP studies from 1985 to 2020. Significant risk factors that were associated with a negative impact on survival of EP patients included sepsis (OR = 15.99), shock (OR = 15.57), disturbance of consciousness (OR = 12.11), thrombocytopenia (OR 7.85), acute renal failure (OR = 5.41), Wan classification I (OR = 4.57), emergency nephrectomy (OR = 3.73), Huang-Tseng classification III-IV (OR = 2.4) and medical management alone (OR = 2.04). Female sex (OR = 0.52) and minimally invasive intervention (OR = 0.47) (percutaneous nephrostomy or ureteral stent placement) were associated with decreased mortality rates. CONCLUSIONS: Our study results demonstrated several significant risk factors that could help guide treatment to reduce the mortality risk of EP patients. Clinically, early treatment with a combination of minimally invasive intervention and appropriate medical management may be protective for reducing mortality risk in EP patients.


Asunto(s)
Enfisema , Pielonefritis , Enfisema/complicaciones , Enfisema/epidemiología , Femenino , Humanos , Nefrectomía , Prevalencia , Pielonefritis/complicaciones , Pielonefritis/epidemiología , Factores de Riesgo
4.
Aust J Rural Health ; 30(2): 135-148, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34514661

RESUMEN

OBJECTIVE: To measure satisfaction with general practitioner obstetrician-led maternity care in Western Australia and to explore perspectives of maternity service users DESIGN: Women were recruited at antenatal visits with their general practitioner obstetrician. Participants completed a validated three-part survey about their satisfaction with antenatal, intrapartum and postpartum care. They were all offered a semi-structured interview. SETTING: Nine general practitioner obstetrician practices located in regional Western Australia. PARTICIPANTS: 155 women receiving general practitioner obstetrician-led maternity care within the South West or Great Southern regions of Western Australia. 13 of these women also participated in an interview. MAIN OUTCOME MEASURES: We quantified satisfaction with aspects of antenatal, intrapartum and postpartum care using a Likert scale. Descriptive variables included demographic information and birth outcomes. Qualitative data described valued aspects of maternity care. RESULTS: 116 women completed all 3 surveys. General practitioner obstetrician-led care resulted in high rates of satisfaction across all 3 stages of care, with 78%-100% agreement with positively worded satisfaction statements. Thematic analysis identified four key aspects of care women valued when receiving maternity care: the woman-centred care experience, the skills of the general practitioner obstetrician, support from the health care team and the health care environment. CONCLUSION: General practitioner obstetrician-led maternity care is a highly regarded model of maternity care, valued by rural women with high rates of satisfaction.


Asunto(s)
Médicos Generales , Servicios de Salud Materna , Partería , Obstetricia , Femenino , Humanos , Masculino , Satisfacción del Paciente , Satisfacción Personal , Embarazo , Australia Occidental
5.
J Virol ; 94(7)2020 03 17.
Artículo en Inglés | MEDLINE | ID: mdl-31915279

RESUMEN

Influenza A virus (IAV) utilizes multiple strategies to confront or evade host type I interferon (IFN)-mediated antiviral responses in order to enhance its own propagation within the host. One such strategy is to induce the degradation of type I IFN receptor 1 (IFNAR1) by utilizing viral hemagglutinin (HA). However, the molecular mechanism behind this process is poorly understood. Here, we report that a cellular protein, poly(ADP-ribose) polymerase 1 (PARP1), plays a critical role in mediating IAV HA-induced degradation of IFNAR1. We identified PARP1 as an interacting partner for IAV HA through mass spectrometry analysis. This interaction was confirmed by coimmunoprecipitation analyses. Furthermore, confocal fluorescence microscopy showed altered localization of endogenous PARP1 upon transient IAV HA expression or during IAV infection. Knockdown or inhibition of PARP1 rescued IFNAR1 levels upon IAV infection or HA expression, exemplifying the importance of PARP1 for IAV-induced reduction of IFNAR1. Notably, PARP1 was crucial for the robust replication of IAV, which was associated with regulation of the type I IFN receptor signaling pathway. These results indicate that PARP1 promotes IAV replication by controlling viral HA-induced degradation of host type I IFN receptor. Altogether, these findings provide novel insight into interactions between influenza virus and the host innate immune response and reveal a new function for PARP1 during influenza virus infection.IMPORTANCE Influenza A virus (IAV) infections cause seasonal and pandemic influenza outbreaks, which pose a devastating global health concern. Despite the availability of antivirals against influenza, new IAV strains continue to persist by overcoming the therapeutics. Therefore, much emphasis in the field is placed on identifying new therapeutic targets that can more effectively control influenza. IAV utilizes several tactics to evade host innate immunity, which include the evasion of antiviral type I interferon (IFN) responses. Degradation of type I IFN receptor (IFNAR) is one known method of subversion, but the molecular mechanism for IFNAR downregulation during IAV infection remains unclear. Here, we have found that a host protein, poly(ADP-ribose) polymerase 1 (PARP1), facilitates IFNAR degradation and accelerates IAV replication. The findings reveal a novel cellular target for the potential development of antivirals against influenza, as well as expand our base of knowledge regarding interactions between influenza and the host innate immunity.


Asunto(s)
Subtipo H1N1 del Virus de la Influenza A , Gripe Humana/virología , Poli(ADP-Ribosa) Polimerasa-1/metabolismo , Receptor de Interferón alfa y beta/metabolismo , Células A549 , Animales , Antivirales/farmacología , Chlorocebus aethiops , Perros , Células HEK293 , Glicoproteínas Hemaglutininas del Virus de la Influenza/metabolismo , Humanos , Inmunidad Innata , Gripe Humana/inmunología , Células de Riñón Canino Madin Darby , Espectrometría de Masas , Microscopía Confocal , ARN Interferente Pequeño/metabolismo , Transducción de Señal , Células Vero
6.
Cochrane Database Syst Rev ; 4: CD012060, 2021 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-33871067

RESUMEN

BACKGROUND: In healthcare settings, health care workers (HCWs) are at risk of acquiring infectious diseases through sharps injuries and splash exposures to blood or bodily fluids. Education and training interventions are widely used to protect workers' health and safety and to prevent sharps injuries. In certain countries, they are part of obligatory professional development for HCWs. OBJECTIVES: To assess the effects of education and training interventions compared to no intervention or alternative interventions for preventing sharps injuries and splash exposures in HCWs. SEARCH METHODS: We searched CENTRAL, MEDLINE, Embase, NHSEED, Science Citation Index Expanded, CINAHL and OSH-update (from all time until February 2016). In addition, we searched the databases of Global Health, AustHealth and Web of Science (from all time until February 2016). The original search strategy was re-run in November 2019, and again in February 2020. In April 2020, the search strategy was updated and run in CINAHL, MEDLINE, Scopus and Web of Science (from 2016 to current). SELECTION CRITERIA: We considered randomized controlled trials (RCTs), cluster-randomized trials (cluster-RCTs), controlled clinical trials (CCTs), interrupted time series (ITS) study designs, and controlled before-and-after studies (CBA), that evaluated the effect of education and training interventions on the incidence of sharps injuries and splash exposures compared to no-intervention. DATA COLLECTION AND ANALYSIS: Two authors (SC, HL) independently selected studies, and extracted data for the included studies. Studies were analyzed, risk of bias assessed (HL, JL) , and pooled using random-effect meta-analysis, where applicable, according to their design types. As primary outcome we looked for sharps injuries and splash exposures and calculated them as incidence of injuries per 1000 health care workers per year. For the quality of evidence we applied GRADE for the main outcomes. MAIN RESULTS: Seven studies met our inclusion criteria: one cluster-RCT, three CCTs, and three ITS studies. The baseline rates of sharps injuries varied from 43 to 203 injuries per 1000 HCWs per year in studies with hospital registry systems. In questionnaire-based studies, the rates of sharps injuries were higher, from 1800 to 7000 injuries per 1000 HCWs per year.  The majority of studies utilised a combination of education and training interventions, including interactive demonstrations, educational presentations, web-based information systems, and marketing tools which we found similar enough to be combined. In the only cluster-RCT (n=796) from a high-income country, the single session educational workshop decreased sharps injuries at 12 months follow-up, but this was not statistically significant either measured as registry-based reporting of injuries (RR 0.46, 95% CI 0.16 to 1.30, low-quality evidence) or as self-reported injuries (RR 0.41, 95% CI 0.14 to 1.21, very low-quality evidence) In three CCTs educational interventions decreased sharps injuries at two months follow-up (RR 0.68, 95% CI 0.48 to 0.95, 330 participants, very low-quality evidence). In the meta-analysis of two ITS studies with a similar injury rate, (N=2104), the injury rate decreased immediately post-intervention by 9.3 injuries per 1000 HCWs per year (95% CI -14.9 to -3.8). There was a small non-significant decrease in trend over time post-intervention of 2.3 injuries per 1000 HCWs per year (95% CI -12.4 to 7.8, low-quality evidence). One ITS study (n=255) had a seven-fold higher injury rate compared to the other two ITS studies and only three data points before and after the intervention. The study reported a change in injury rate of 77 injuries per 1000 HCWs (95% CI -117.2 to -37.1, very low-quality evidence) immediately after the intervention, and a decrease in trend post-intervention of 32.5 injuries per 1000 HCWs per year (95% CI -49.6 to -15.4, very low quality evidence). None of the studies allowed analyses of splash exposures separately from sharps injuries. None of the studies reported rates of blood-borne infections in patients or staff. There was very low-quality evidence of short-term positive changes in process outcomes such as knowledge in sharps injuries and behaviors related to injury prevention.  AUTHORS' CONCLUSIONS: We found low- to very low-quality evidence that education and training interventions may cause small decreases in the incidence of sharps injuries two to twelve months after the intervention. There was very low-quality evidence that educational interventions may improve knowledge and behaviors related to sharps injuries in the short term but we are uncertain of this effect. Future studies should focus on developing valid measures of sharps injuries for reliable monitoring. Developing educational interventions in high-risk settings is another priority.


Asunto(s)
Infecciones de Transmisión Sanguínea/prevención & control , Personal de Salud/educación , Exposición Profesional/prevención & control , Heridas Punzantes/prevención & control , Estudios Controlados Antes y Después , Ensayos Clínicos Controlados como Asunto , Humanos , Análisis de Series de Tiempo Interrumpido , Lesiones por Pinchazo de Aguja/epidemiología , Lesiones por Pinchazo de Aguja/prevención & control , Ensayos Clínicos Controlados Aleatorios como Asunto , Heridas Punzantes/epidemiología
7.
Med Educ ; 55(4): 496-504, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33141924

RESUMEN

BACKGROUND: Rural intention and experience during medical school have been related to subsequent rural work. However, their relative contributions and the timing of their effects are not known. These data are critical to effective educational interventions able to improve rural medical workforce numbers, an international priority. METHODS: Participants were graduates of an Australian MBBS degree between 2006 and 2016, who completed both entry and exit surveys approved by the Medical Deans of Australia, including workplace intention data. Rural/urban workplace intention changes from entry to exit were analysed using multinomial logistic regression. Binary logistic regression was used to assess actual rural versus urban work, obtained from a public practitioner registration website. RESULTS: Of 547 eligible undergraduates, 169 completed a year-long rural clinical school (RCS). A subset of 93 of the 547 graduates practiced rurally, of whom 42 had completed RCS. Both rural background and RCS predicted rural practice intention; both were also significantly related to actual rural work. Enduring rural intention was associated with nearly sevenfold odds of actually practicing rurally, compared with an enduring urban intention. Those who changed practice intention from entry to exit were more likely to practice in the region of their exit intention. Of special note: Rural Clinical School of Western Australia (RCSWA) exposure particularly affects urban origin students such that the odds of changing from an urban to a rural orientation immediately after their rural experience were more than fourfold higher than those not so participating. DISCUSSION: Both intention and RCSWA experience are associated with subsequent rural work. The impacts of RCSWA were able to be localised after the rural educational experience. Amongst those with mutable intention, exit intention was that most strongly related to actual work, suggesting this as the most reliable point to select for further rural training.


Asunto(s)
Intención , Ubicación de la Práctica Profesional , Servicios de Salud Rural , Estudiantes de Medicina , Australia , Selección de Profesión , Humanos , Australia Occidental , Recursos Humanos
8.
BMC Psychiatry ; 20(1): 214, 2020 05 11.
Artículo en Inglés | MEDLINE | ID: mdl-32393203

RESUMEN

BACKGROUND: Mental health Step-up, Step-down services (SUSD), also known as subacute services or Prevention and Recovery Services, have emerged to fill an identified gap between hospital-based inpatient care and clinical community-based mental health support. Evidence for the effectiveness of the SUSD service model is limited but growing. Accordingly, this study looked to add to the extant body of knowledge, by (i) assessing change outcomes in mental health and wellbeing, and predictors of these changes, for patients who accessed Western Australia's first SUSD service; and (ii) evaluating patients' satisfaction with service, and what patients value from their stay. METHODS: This was a mixed-method retrospective cohort study. Participants comprised 382 patients who accessed a 22-bed Mental Health SUSD facility and incurred 551 episodes of care during the 01/07/2014-30/06/2016 period. Patients' change outcomes in psychological distress, general self-efficacy, and work and social adjustment from service entry to service exit were analyzed using generalized linear modeling. Simple Pearson's correlation coefficients were calculated for preliminary assessment of the associations between patients' service satisfaction and their change outcomes. Qualitative outcomes that patients valued from their stay were analyzed thematically according to a semi-grounded theoretical approach. RESULTS: Significant improvements were observed in patients' self-reported psychological distress, self-efficacy, and work and social adjustment (all p < 0.0001). A strong and persistent baseline effect existed across the three measures. Older age, female gender, and having a dependent child in the same household were protective/enhancing factors for the patients' recovery. Satisfaction with service was high. Patients valued having the time and space to recuperate, gain insight, focus, and create changes in their lives. CONCLUSION: The encouraging findings, regarding both patients' change outcomes and satisfaction with service, support the value of the SUSD service model for patients with mental illnesses. Strengths and limitations were discussed; ensued recommendations were offered to both service providers and researchers to enhance the robustness of future research findings, to help inform more effective policy and funding decisions related to mental health care.


Asunto(s)
Servicios de Salud Mental , Salud Mental , Anciano , Niño , Estudios de Cohortes , Femenino , Humanos , Estudios Retrospectivos , Australia Occidental
9.
BMC Health Serv Res ; 20(1): 348, 2020 04 24.
Artículo en Inglés | MEDLINE | ID: mdl-32331518

RESUMEN

In the original publication of this article [1], an error occurred during the publication of this article in Table 2.

10.
BMC Med Educ ; 20(1): 432, 2020 Nov 16.
Artículo en Inglés | MEDLINE | ID: mdl-33198731

RESUMEN

BACKGROUND: The rural medical workforce internationally suffers from a significant imbalance between male- and female- identifying practitioners. Not only do male doctors outnumber female doctors, but additionally female doctors work fewer hours than their male counterparts. This has health implications for rural communities. In response, In Australia, Rural Clinical Schools (RCSs) are a national training strategy to increase the number of graduates entering the rural medical workforce. It has been observed that RCSs attract a greater number of female students than male students. However, the future work intentions of male versus female RCS students is not known. This paper therefore asked whether male and female RCS students have equivalent intent for future rural practice. METHODS: Participants were all students who attended RCSs from 2015 to 2017, who completed an exit survey that gathered data on demographic, experiential and intentional variables. Univariate analyses examined differences between the sexes. A multivariate model was constructed to determine the independent predictors for rural intention. RESULTS: There were 2017 respondents across the 3 years, of whom 937 identified as male, and 1138 identified as female. In univariate analysis, female-identifying students had significantly higher rural intention than male-identifying students. There were no other sex-based differences in age, rural background, overall perception of support, and overall excellence of clinical education whilst in RCS. However, in multivariate analysis, sex was not a significant predictor for rural work intention, whereas older age, rural background, and first preference for RCS were all predictive of increased rural intent, as expected from the literature. There were no differences between male and female students in their perceptions of the overall support and the clinical education provided by RCS. CONCLUSION: We conclude from this national study that sex is not an independent predictor for future rural work intention among RCS students. Considering the disproportionate number of female students entering RCS, this is reassuring for ultimately achieving rural workforce gender equity.


Asunto(s)
Servicios de Salud Rural , Estudiantes de Medicina , Anciano , Actitud del Personal de Salud , Australia , Selección de Profesión , Femenino , Equidad de Género , Humanos , Masculino , Ubicación de la Práctica Profesional , Población Rural , Encuestas y Cuestionarios
11.
BMC Med Educ ; 20(1): 104, 2020 Apr 06.
Artículo en Inglés | MEDLINE | ID: mdl-32252750

RESUMEN

BACKGROUND: We sought to determine the feasibility and effectiveness of a mindfulness training program, delivered online to medical students at a Rural Clinical School. METHODS: An 8-week online training program was delivered to penultimate-year medical students at an Australian Rural Clinical School during 2016. Using a mixed methods approach, we measured the frequency and duration of participants' mindfulness meditation practice, and assessed changes in their perceived stress, self-compassion and compassion levels, as well as personal and professional attitudes and behaviours. RESULTS: Forty-seven participants were recruited to the study. 50% of participants were practising mindfulness meditation at least weekly by the end of the 8-week program, and 32% reported practising at least weekly 4 months following completion of the intervention. There was a statistically significant reduction in participants' perceived stress levels and a significant increase in self-compassion at 4-month follow-up. Participants reported insights about the personal and professional impact of mindfulness meditation training as well as barriers to practice. CONCLUSIONS: The results provide preliminary evidence that online training in mindfulness meditation can be associated with reduced stress and increased self-compassion in rural medical students. More rigorous research is required to establish concrete measures of feasibility of a mindfulness meditation program.


Asunto(s)
Atención Plena/educación , Estrés Laboral/terapia , Servicios de Salud Rural/organización & administración , Población Rural/estadística & datos numéricos , Estrés Psicológico/terapia , Estudiantes de Medicina/psicología , Adulto , Australia , Curriculum , Estudios de Factibilidad , Femenino , Humanos , Masculino , Estrés Laboral/prevención & control , Proyectos Piloto , Estrés Psicológico/prevención & control
12.
Emerg Med J ; 37(12): 793-800, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32669320

RESUMEN

INTRODUCTION: Delayed handover of emergency medical services (EMS) patients to EDs is a major issue with hospital crowding considered a primary cause. We explore the impact of the 4-hour rule (the Policy) in Australia, focusing on ambulance and ED delays. METHODS: EMS (ambulance), ED and hospital data of adult patients presenting to 14 EDs from 2002 to 2013 in three jurisdictions were linked. Interrupted time series 'Before-and-After' trend analysis was used for assessing the Policy's impact. Random effects meta-regression analysis was examined for associations between ambulance delays and Policy-associated ED intake, throughput and output changes. RESULTS: Before the Policy, the proportion of ED ambulances delayed increased between 1.1% and 1.7% per quarter across jurisdictions. After Policy introduction, Western Australia's increasing trend continued but Queensland decreased by 5.1% per quarter. In New South Wales, ambulance delay decreased 7.1% in the first quarter after Policy introduction. ED intake (triage delay) improved only in New South Wales and Queensland. Each 1% ambulance delay reduction was significantly associated with a 0.91% reduction in triage delay (p=0.014) but not ED length of stay ≤4 hours (p=0.307) or access-block/boarding (p=0.605) suggesting only partial improvement in ambulance delay overall. CONCLUSION: The Policy was associated with reduced ambulance delays over time in Queensland and only the immediate period in New South Wales. Associations may be due to local jurisdictional initiatives to improve ambulance performance. Strategies to alleviate ambulance delay may need to focus on the ED intake component. These should be re-examined with longer periods of post-Policy data.


Asunto(s)
Ambulancias/estadística & datos numéricos , Aglomeración , Eficiencia Organizacional , Servicio de Urgencia en Hospital/organización & administración , Tiempo de Tratamiento , Adulto , Australia , Femenino , Humanos , Análisis de Series de Tiempo Interrumpido , Estudios Longitudinales , Masculino , Política Organizacional , Indicadores de Calidad de la Atención de Salud , Triaje
13.
J Immunol ; 199(2): 677-687, 2017 07 15.
Artículo en Inglés | MEDLINE | ID: mdl-28600291

RESUMEN

Sphingosine 1-phosphate (S1P) lyase (SPL) is an intracellular enzyme that mediates the irreversible degradation of the bioactive lipid S1P. We have previously reported that overexpressed SPL displays anti-influenza viral activity; however, the underlying mechanism is incompletely understood. In this study, we demonstrate that SPL functions as a positive regulator of IKKε to propel type I IFN-mediated innate immune responses against viral infection. Exogenous SPL expression inhibited influenza A virus replication, which correlated with an increase in type I IFN production and IFN-stimulated gene accumulation upon infection. In contrast, the lack of SPL expression led to an elevated cellular susceptibility to influenza A virus infection. In support of this, SPL-deficient cells were defective in mounting an effective IFN response when stimulated by influenza viral RNAs. SPL augmented the activation status of IKKε and enhanced the kinase-induced phosphorylation of IRF3 and the synthesis of type I IFNs. However, the S1P degradation-incompetent form of SPL also enhanced IFN responses, suggesting that SPL's pro-IFN function is independent of S1P. Biochemical analyses revealed that SPL, as well as the mutant form of SPL, interacts with IKKε. Importantly, when endogenous IKKε was downregulated using a small interfering RNA approach, SPL's anti-influenza viral activity was markedly suppressed. This indicates that IKKε is crucial for SPL-mediated inhibition of influenza virus replication. Thus, the results illustrate the functional significance of the SPL-IKKε-IFN axis during host innate immunity against viral infection.


Asunto(s)
Aldehído-Liasas/metabolismo , Quinasa I-kappa B/metabolismo , Inmunidad Innata , Virus de la Influenza A/inmunología , Interferón Tipo I/inmunología , Células A549 , Aldehído-Liasas/deficiencia , Aldehído-Liasas/genética , Regulación hacia Abajo , Activación Enzimática , Células HEK293 , Humanos , Quinasa I-kappa B/genética , Virus de la Influenza A/fisiología , Factor 3 Regulador del Interferón/metabolismo , Interferón Tipo I/biosíntesis , Lisofosfolípidos/metabolismo , Fosforilación , Esfingosina/análogos & derivados , Esfingosina/metabolismo , Replicación Viral
14.
BMC Health Serv Res ; 19(1): 998, 2019 Dec 26.
Artículo en Inglés | MEDLINE | ID: mdl-31878913

RESUMEN

BACKGROUND: Deficits in the rural medical workforce is an international issue. In Australia, The Rural Clinical School intervention is effective for initial recruitment of rural doctors. However, the extent of survival is not yet established. This paper summarises rural survival over a 10-year period. METHODS: Rural Clinical School graduates of Western Australia were surveyed annually, 2006-2015, and post Graduate Years (PGY) 3-12 included. Survival was described as "tours of service", where a tour was either a period of ≥1 year, or a period of ≥2 weeks, working rurally. A tour ended with a rural work gap of ≥52 weeks. Considering each exit from urban as an event, semi-parametric repeated measures survival models were fitted. RESULTS: Of 468 graduates, using the ≥2 weeks definition, 239 PGY3-12 graduates spent at least one tour rurally (average 61.1, CI 52.5-69.7 weeks), and a total length of 14,607 weeks. Based on the tour definition of ≥1 year, 120 graduates completed at least one tour (average 1.89, 1.69-2.10 years), and a total of 227 years' rural work. For both definitions, the number of tours increased from one to four by PGY10/11, giving 17,786 total weeks (342 years) across all PGYs for the ≥2 weeks tour definition, and 256 years total for ≥1 year. Significantly more graduates exited from urban work for the 2007-09 middle cohort compared with 2010-11 (HR 1.876, p = 0.022), but no significant difference between 2002 and 06 and 2010-11. Rural origin, age and gender were not statistically significant. CONCLUSIONS: PGY3-12 RCS graduates contributed substantially to the rural workforce: 51% did so by short rotations, while 26% contributed whole years of service. There was an apparent peak in entry and survival for the middle cohort and decline thereafter, likely attributable to lack of advanced/specialist vocational training. These data indicate a real commitment to rural practice by RCS graduates, and the need for rural vocational training as a key element of a successful rural survival strategy.


Asunto(s)
Fuerza Laboral en Salud/organización & administración , Servicios de Salud Rural/organización & administración , Servicios de Salud Rural/estadística & datos numéricos , Adulto , Estudios de Cohortes , Femenino , Humanos , Masculino , Encuestas y Cuestionarios , Australia Occidental , Adulto Joven
15.
Med Teach ; 41(9): 1073-1080, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31177927

RESUMEN

Background: The contribution of rural clinical school (RCS) and rural origin to developing a long-term rural medical workforce was examined. Methods: Longitudinal cohort study, after undergraduate location in either rural or urban setting, for all medical graduates 2004-2010, identified in the Australian Health Practitioner Regulation Agency, in the following groups: Urban origin/no RCS; Rural origin/no RCS; Urban origin/RCS; and Rural origin/RCS. Results: Proportions of all graduates working rurally increased from 2013 to 2018, including amongst urban origin/nonRCS graduates. Rural origin/RCS participants worked rurally at the highest rates across all time points, with an endpoint of 47%, and an odds ratio of 9.70 (5.41, 17.40) relative to the urban reference group. They had a cumulative duration of rural practice over 5 times higher than the urban reference group. RCS graduates were more likely to be working in remote areas than nonRCS graduates. Conclusion: All graduates' contribution to rural and remote workforce is dynamic and increasing. Both RCS participation and rural student recruitment make synergistic and increasing contributions to rural work. RCS effects workforce distribution to more remote areas. Single cross-sectional studies do not capture this dynamic growth in the rural workforce.


Asunto(s)
Ubicación de la Práctica Profesional/estadística & datos numéricos , Servicios de Salud Rural/estadística & datos numéricos , Población Rural/estadística & datos numéricos , Estudiantes de Medicina/estadística & datos numéricos , Adulto , Femenino , Humanos , Estudios Longitudinales , Masculino , Facultades de Medicina , Australia Occidental , Adulto Joven
16.
Australas Psychiatry ; 27(3): 275-278, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30507301

RESUMEN

OBJECTIVES: Smoking rates in people with mental illness in Australia remain alarmingly high whilst they have been declining in the general population. This study reviews a smoking cessation programme in a mental health service, as a pilot for future studies and program development. We aim to assess the effectiveness of this intervention and the ease of implementation after upskilling the clinical workforce. METHODS: Part A - a retrospective analysis of patients attending the Smokers' Clinic, (n = 44) over a period of 18 months. Part B - survey of ease of implementation and change in practice of the resident medical officers (RMOs; n = 8) following their clinical placement. RESULTS: For the entire clinic population, the mean reduction in expired carbon monoxide was approximately 43%, with 34% of patients achieving abstinence. Females were 3.4 times more likely to be successful than males. Seventy-five per cent of RMOs found learning about nicotine dependence and smoking cessation 'easy', and 88% continued to offer smoking cessation after their placement. CONCLUSIONS: The Smokers' Clinic was successful in helping tobacco smokers with mental illness to reduce or cease smoking. Specialist skill and experience is not required to manage smoking cessation in a mental health setting.


Asunto(s)
Servicios de Salud Mental/organización & administración , Enfermos Mentales/estadística & datos numéricos , Cese del Hábito de Fumar/métodos , Fumar/terapia , Adulto , Australia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Desarrollo de Programa , Estudios Retrospectivos , Encuestas y Cuestionarios , Adulto Joven
17.
Eur J Dent Educ ; 23(3): 266-277, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30714266

RESUMEN

INTRODUCTION: With nine dental schools across Australia graduating over 500 dental students each year, in addition to nearly 200 overseas-qualified dentists entering the workforce, dental students are anecdotally advised that they are joining a profession ubiquitous with workforce oversupply. The aim of this study was to shed light on the employment patterns of recent dental graduates from Australian universities and their self-perceptions of the job market. MATERIALS AND METHODS: This cross-sectional pilot study involved an online survey conducted in 2017 on recent dental graduates from all Australian dental schools. Graduates' demographics, their perception of the dental employment prospects, their employment-related behaviours and employment outcomes, and the relationships between these variables were explored. RESULTS: Data on seventy-one survey respondents (approximately 12% of the total sampling frame) were analysed. They suggested that recent Australian dental graduates are seeking work (73.2%) and undertaking work experience (54.9%) prior to graduation, successfully finding employment within the first-year post-graduation (97%), yet not always in their perceived ideal workplace environment (42.2%). Relationships between age, perception of market competitiveness and job searching patterns were revealed. Graduates expressed a desire for more workplace mentorship. The small sample size of this study limits the generalisability of the results, indicating that further research is required. CONCLUSIONS: The dental employment landscape appears to have adequate employment opportunities for recent dental graduates, yet not always in their perceived ideal workplace environment. Graduates are seeking more mentorship in the workplace.


Asunto(s)
Empleo , Autoimagen , Australia , Estudios Transversales , Humanos , Proyectos Piloto
18.
BMC Palliat Care ; 17(1): 130, 2018 Dec 22.
Artículo en Inglés | MEDLINE | ID: mdl-30579330

RESUMEN

BACKGROUND: Rapid effective responsiveness to patient needs is pivotal to high quality palliative care. Aboriginal and Torres Strait Islander (Indigenous) people are susceptible to life-limiting illnesses at younger ages than other Australians and experience inequity of health service provision. The Palliative Care Outcomes Collaboration collects Australia-wide health service data on patient care, and has established performance benchmarks for specialist palliative care services. We investigated whether the benchmark for timely commencement of palliative care episodes (occurrence of delay >1 day after being designated 'ready for care' in <10% instances) is being met for Indigenous Australians in participating services. Additionally, we investigated the association between identification as Indigenous and delay. METHODS: Using multi-jurisdictional Palliative Care Outcomes Collaboration data, this cross-sectional analytical study investigated all episodes of care (n = 84,238) provided to patients ≥18 years (n = 61,073: Indigenous n = 645) in hospital and community settings commenced and completed during the period 01/07/2013-30/06/2015. Proportions of episodes resulting in delay were determined. Crude and adjusted odds of delay among Indigenous compared with non-Indigenous patients were investigated using multiple logistic regression, with missing data handled by multiple imputation. RESULTS: The benchmark was met for both Indigenous and non-Indigenous patients (delay in 8.3 and 8.4% episodes respectively). However, the likelihood of delay was modestly higher in episodes provided to Indigenous than non-Indigenous patients (adjusted odds ratio [aOR], 1.41; 95% confidence interval [CI] 1.07-1.86). Excess delay among Indigenous patients was accentuated in first episodes (aOR, 1.53; 95% CI 1.14-2.06), in patients aged < 65 years (aOR, 1.66; 95% CI 1.14-2.41), and among those residing in Inner Regional areas (aOR, 1.97; 95% CI 1.19-3.28), and also approached significance among those in outer regional, remote and very remote areas collectively (aOR, 1.72; CI 0.97-3.05). CONCLUSIONS: Although the timeliness benchmark is being met for Indigenous Australians in palliative care, they may experience delayed initiation of care episodes, particularly if younger, and especially at first encounter with a service. Qualitative research is required to explore determinants of delay in initiating palliative care episodes. The timeliness of initial referral for specialist palliative care in this population remains to be determined.


Asunto(s)
Servicios de Salud del Indígena/estadística & datos numéricos , Cuidados Paliativos/normas , Grupos de Población , Tiempo de Tratamiento , Anciano , Australia , Benchmarking , Estudios Transversales , Femenino , Servicios de Salud del Indígena/normas , Disparidades en Atención de Salud , Humanos , Masculino
19.
Plant Cell ; 26(3): 962-80, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24642943

RESUMEN

Plants require sophisticated regulatory mechanisms to ensure the degree of anthocyanin pigmentation is appropriate to myriad developmental and environmental signals. Central to this process are the activity of MYB-bHLH-WD repeat (MBW) complexes that regulate the transcription of anthocyanin genes. In this study, the gene regulatory network that regulates anthocyanin synthesis in petunia (Petunia hybrida) has been characterized. Genetic and molecular evidence show that the R2R3-MYB, MYB27, is an anthocyanin repressor that functions as part of the MBW complex and represses transcription through its C-terminal EAR motif. MYB27 targets both the anthocyanin pathway genes and basic-helix-loop-helix (bHLH) ANTHOCYANIN1 (AN1), itself an essential component of the MBW activation complex for pigmentation. Other features of the regulatory network identified include inhibition of AN1 activity by the competitive R3-MYB repressor MYBx and the activation of AN1, MYB27, and MYBx by the MBW activation complex, providing for both reinforcement and feedback regulation. We also demonstrate the intercellular movement of the WDR protein (AN11) and R3-repressor (MYBx), which may facilitate anthocyanin pigment pattern formation. The fundamental features of this regulatory network in the Asterid model of petunia are similar to those in the Rosid model of Arabidopsis thaliana and are thus likely to be widespread in the Eudicots.


Asunto(s)
Antocianinas/metabolismo , Pigmentos Biológicos/metabolismo , Transactivadores/metabolismo , Redes Reguladoras de Genes , Genes myb , Plantas Modificadas Genéticamente
20.
Tumour Biol ; 39(10): 1010428317713913, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29037127

RESUMEN

The presence of distant metastasis is associated with an adverse outcome in papillary thyroid cancer. We performed a meta-analysis to investigate the role of molecular markers as predictors for distant metastasis in papillary thyroid cancer. Four electronic databases including PubMed, Web of Science, Scopus, and Virtual Health Library were searched, and odds ratio and its 95% confidence interval concerning the association of BRAF, RAS, and TERT promoter mutations and RET/PTC rearrangements with distant metastasis were calculated using random-effects model. In total, 42 studies with 11,109 papillary thyroid cancers were included for meta-analyses. Overall, the presence of TERT promoter (odds ratio = 5.95; 95% confidence interval = 2.95-11.99), RAS mutations (odds ratio = 2.5; 95% confidence interval = 1.00-6.22), and RET/PTC rearrangements (odds ratio = 1.92; 95% confidence interval = 1.03-3.56) were found to be associated with a significantly increased risk for distant metastasis. BRAF mutations were not associated with an elevated risk for distant metastasis (odds ratio = 0.79; 95% confidence interval = 0.54-1.16). In conclusion, our study demonstrated the promising value of few molecular biomarkers, especially TERT promoter mutations in predicting distant metastasis in papillary thyroid cancers, while BRAF mutations showed no association with distant metastasis. Our study affirms the value of selected mutations for tumor risk stratification and assessment of patients' prognosis.


Asunto(s)
Biomarcadores de Tumor/genética , Carcinoma/genética , Carcinoma/patología , Mutación/genética , Regiones Promotoras Genéticas/genética , Proteínas Proto-Oncogénicas B-raf/genética , Telomerasa/genética , Neoplasias de la Tiroides/genética , Neoplasias de la Tiroides/patología , Adolescente , Adulto , Anciano , Carcinoma Papilar , Bases de Datos Factuales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Metástasis de la Neoplasia/genética , Metástasis de la Neoplasia/patología , Cáncer Papilar Tiroideo , Proteínas ras/genética
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