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1.
J Cell Sci ; 137(12)2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38940346

RESUMO

Desmosomes are relatives of ancient cadherin-based junctions, which emerged late in evolution to ensure the structural integrity of vertebrate tissues by coupling the intermediate filament cytoskeleton to cell-cell junctions. Their ability to dynamically counter the contractile forces generated by actin-associated adherens junctions is particularly important in tissues under high mechanical stress, such as the skin and heart. Much more than the simple cellular 'spot welds' depicted in textbooks, desmosomes are in fact dynamic structures that can sense and respond to changes in their mechanical environment and external stressors like ultraviolet light and pathogens. These environmental signals are transmitted intracellularly via desmosome-dependent mechanochemical pathways that drive the physiological processes of morphogenesis and differentiation. This Cell Science at a Glance article and the accompanying poster review desmosome structure and assembly, highlight recent insights into how desmosomes integrate chemical and mechanical signaling in the epidermis, and discuss desmosomes as targets in human disease.


Assuntos
Desmossomos , Desmossomos/metabolismo , Humanos , Animais , Epiderme/metabolismo
2.
Proc Natl Acad Sci U S A ; 120(22): e2220635120, 2023 05 30.
Artigo em Inglês | MEDLINE | ID: mdl-37216502

RESUMO

Stiffness and actomyosin contractility are intrinsic mechanical properties of animal cells required for the shaping of tissues. However, whether tissue stem cells (SCs) and progenitors located within SC niche have different mechanical properties that modulate their size and function remains unclear. Here, we show that hair follicle SCs in the bulge are stiff with high actomyosin contractility and resistant to size change, whereas hair germ (HG) progenitors are soft and periodically enlarge and contract during quiescence. During activation of hair follicle growth, HGs reduce contraction and more frequently enlarge, a process that is associated with weakening of the actomyosin network, nuclear YAP accumulation, and cell cycle reentry. Induction of miR-205, a novel regulator of the actomyosin cytoskeleton, reduces actomyosin contractility and activates hair regeneration in young and old mice. This study reveals the control of tissue SC size and activities by spatiotemporally compartmentalized mechanical properties and demonstrates the possibility to stimulate tissue regeneration by fine-tuning cell mechanics.


Assuntos
Folículo Piloso , MicroRNAs , Animais , Camundongos , Actomiosina/metabolismo , Cabelo , Folículo Piloso/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Células-Tronco/metabolismo
3.
J Cell Sci ; 136(1)2023 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-36594662

RESUMO

Desmosome diseases are caused by dysfunction of desmosomes, which anchor intermediate filaments (IFs) at sites of cell-cell adhesion. For many decades, the focus of attention has been on the role of actin filament-associated adherens junctions in development and disease, especially cancer. However, interference with the function of desmosomes, their molecular constituents or their attachments to IFs has now emerged as a major contributor to a variety of diseases affecting different tissues and organs including skin, heart and the digestive tract. The first Alpine desmosome disease meeting (ADDM) held in Grainau, Germany, in October 2022 brought together international researchers from the basic sciences with clinical experts from diverse fields to share and discuss their ideas and concepts on desmosome function and dysfunction in the different cell types involved in desmosome diseases. Besides the prototypic desmosomal diseases pemphigus and arrhythmogenic cardiomyopathy, the role of desmosome dysfunction in inflammatory bowel diseases and eosinophilic esophagitis was discussed.


Assuntos
Desmossomos , Doença , Humanos , Adesão Celular , Desmossomos/fisiologia , Pênfigo
4.
J Biol Chem ; 299(9): 105111, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37517694

RESUMO

Upon infection by the malaria parasite Plasmodium falciparum, the glycolytic rate of a red blood cell increases up to 100-fold, possibly contributing to lactic acidosis and hypoglycemia in patients with severe malaria. This dramatic increase in glucose uptake and metabolism was correctly predicted by a newly constructed detailed enzyme kinetic model of glucose metabolism in the trophozoite-infected red blood cell. Subsequently, we expanded the model to simulate an infected red blood cell culture, including the different asexual blood-stage forms of the malaria parasite. The model simulations were in good agreement with experimental data, for which the measured parasitic volume was an important parameter. Upon further analysis of the model, we identified glucose transport as a drug target that would specifically affect infected red blood cells, which was confirmed experimentally with inhibitor titrations. This model can be a first step in constructing a whole-body model for glucose metabolism in malaria patients to evaluate the contribution of the parasite's metabolism to the disease state.


Assuntos
Antimaláricos , Eritrócitos , Glicólise , Malária Falciparum , Modelos Biológicos , Terapia de Alvo Molecular , Plasmodium falciparum , Humanos , Acidose Láctica , Antimaláricos/farmacologia , Antimaláricos/uso terapêutico , Antimaláricos/metabolismo , Eritrócitos/efeitos dos fármacos , Eritrócitos/metabolismo , Eritrócitos/parasitologia , Glucose/metabolismo , Glicólise/efeitos dos fármacos , Hipoglicemia , Cinética , Malária Falciparum/metabolismo , Malária Falciparum/parasitologia , Plasmodium falciparum/metabolismo , Plasmodium falciparum/patogenicidade , Plasmodium falciparum/fisiologia , Trofozoítos/patogenicidade , Trofozoítos/fisiologia , Terapia de Alvo Molecular/métodos , Carga Parasitária
5.
Nat Rev Mol Cell Biol ; 12(9): 565-80, 2011 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-21860392

RESUMO

To provide a stable environmental barrier, the epidermis requires an integrated network of cytoskeletal elements and cellular junctions. Nevertheless, the epidermis ranks among the body's most dynamic tissues, continually regenerating itself and responding to cutaneous insults. As keratinocytes journey from the basal compartment towards the cornified layers, they completely reorganize their adhesive junctions and cytoskeleton. These architectural components are more than just rivets and scaffolds - they are active participants in epidermal morphogenesis that regulate epidermal polarization, signalling and barrier formation.


Assuntos
Células Epidérmicas , Epiderme/crescimento & desenvolvimento , Morfogênese/fisiologia , Pele/citologia , Pele/crescimento & desenvolvimento , Animais , Adesão Celular/genética , Adesão Celular/fisiologia , Humanos , Junções Intercelulares/genética , Junções Intercelulares/metabolismo , Junções Intercelulares/fisiologia , Modelos Biológicos , Morfogênese/genética , Pele/ultraestrutura
6.
Nucleic Acids Res ; 49(D1): D1358-D1364, 2021 01 08.
Artigo em Inglês | MEDLINE | ID: mdl-33151297

RESUMO

A multitude of pharmacokinetics studies have been published. However, due to the lack of an open database, pharmacokinetics data, as well as the corresponding meta-information, have been difficult to access. We present PK-DB (https://pk-db.com), an open database for pharmacokinetics information from clinical trials. PK-DB provides curated information on (i) characteristics of studied patient cohorts and subjects (e.g. age, bodyweight, smoking status, genetic variants); (ii) applied interventions (e.g. dosing, substance, route of application); (iii) pharmacokinetic parameters (e.g. clearance, half-life, area under the curve) and (iv) measured pharmacokinetic time-courses. Key features are the representation of experimental errors, the normalization of measurement units, annotation of information to biological ontologies, calculation of pharmacokinetic parameters from concentration-time profiles, a workflow for collaborative data curation, strong validation rules on the data, computational access via a REST API as well as human access via a web interface. PK-DB enables meta-analysis based on data from multiple studies and data integration with computational models. A special focus lies on meta-data relevant for individualized and stratified computational modeling with methods like physiologically based pharmacokinetic (PBPK), pharmacokinetic/pharmacodynamic (PK/PD), or population pharmacokinetic (pop PK) modeling.


Assuntos
Bases de Dados Factuais , Modelos Estatísticos , Anotação de Sequência Molecular , Medicamentos sob Prescrição/farmacocinética , Área Sob a Curva , Peso Corporal , Cafeína/farmacocinética , Ensaios Clínicos como Assunto , Anticoncepcionais Orais/administração & dosagem , Relação Dose-Resposta a Droga , Vias de Administração de Medicamentos , Esquema de Medicação , Cálculos da Dosagem de Medicamento , Ontologia Genética , Meia-Vida , Humanos , Fumar/fisiopatologia
7.
Med Teach ; 45(8): 830-837, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36737071

RESUMO

There is increasing interest in how student engagement can be enhanced in medical schools: not just engagement with learning but with broader academic practices such as curriculum development, research, organisational leadership, and community involvement. To foster evidence-based practice, it is important to understand how institutions from diverse sociocultural contexts achieve excellence in student engagement.We analysed 11 successful applications for an international award in student engagement and interviewed nine key informants from five medical schools across four continents, characterising how and why student engagement was fostered at these institutions.Document analysis revealed considerable consensus on the core practices of student engagement, as well as innovative and creative practices often in response to local strengths and challenges. The interviews uncovered the importance of an authentic partnership culture between students and faculty which sustained mutually beneficial enhancements across multiple domains. Faculty promoted, welcomed, and acted on student inputs, and students reported greater willingness to participate if they could see the benefits. These combined to create self-perpetuating virtuous cycles of academic endeavour. Successful strategies included having participatory values actively reinforced by senior leadership, engagement activities that are driven by both students and staff, and focusing on strategies with reciprocal benefits for all stakeholders.


Assuntos
Educação de Graduação em Medicina , Estudantes de Medicina , Humanos , Faculdades de Medicina , Currículo , Estudantes , Docentes
8.
J Cell Sci ; 133(6)2020 03 16.
Artigo em Inglês | MEDLINE | ID: mdl-32179593

RESUMO

Cells and tissues sense, respond to and translate mechanical forces into biochemical signals through mechanotransduction, which governs individual cell responses that drive gene expression, metabolic pathways and cell motility, and determines how cells work together in tissues. Mechanotransduction often depends on cytoskeletal networks and their attachment sites that physically couple cells to each other and to the extracellular matrix. One way that cells associate with each other is through Ca2+-dependent adhesion molecules called cadherins, which mediate cell-cell interactions through adherens junctions, thereby anchoring and organizing the cortical actin cytoskeleton. This actin-based network confers dynamic properties to cell sheets and developing organisms. However, these contractile networks do not work alone but in concert with other cytoarchitectural elements, including a diverse network of intermediate filaments. This Review takes a close look at the intermediate filament network and its associated intercellular junctions, desmosomes. We provide evidence that this system not only ensures tissue integrity, but also cooperates with other networks to create more complex tissues with emerging properties in sensing and responding to increasingly stressful environments. We will also draw attention to how defects in intermediate filament and desmosome networks result in both chronic and acquired diseases.


Assuntos
Desmossomos , Filamentos Intermediários , Mecanotransdução Celular , Junções Aderentes , Caderinas , Adesão Celular , Citoesqueleto
9.
Health Expect ; 25(1): 149-162, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34543519

RESUMO

BACKGROUND: The early stages of the coronavirus disease 2019 pandemic prompted unprecedented displays of gratitude to healthcare workers. In the United Kingdom, gratitude was a hotly debated topic in public discourse, catalysing compelling displays of civic togetherness but also attracting criticism for being an unhelpful distraction that authorized unrealistic expectations of healthcare workers. Expressions of thanks tend to be neglected as drivers of transformation, and yet, they are important indicators of qualities to which people attach significance. OBJECTIVE: This study aimed to use discursive analysis to explore how the National Health Service (NHS) was constructed in attention-attracting tweets that expressed and/or discussed gratitude to the NHS. METHODS: Having determined that Twitter was the most active site for traffic relating to gratitude and the NHS, we established a corpus of 834 most-liked tweets, purposively sampled from Twitter searches on a day-by-day basis over the period of the first lockdown in the United Kingdom (22 March-28 May 2020). We developed a typology for tweets engaging with gratitude as well as analysing what the NHS was thanked for. RESULTS: Our analysis, informed by a discursive psychology approach, found that the meanings attributed to gratitude were highly mobile and there were distinct patterns of activity. The NHS was predominantly-and sometimes idealistically-thanked for working, effort, saving and caring. Displays of gratitude were seen as incommensurable with failures of responsibility. The clap-for-carers campaign was a potent driver of affect, especially in the early parts of the lockdown. CONCLUSIONS: The social value of gratitude is implicated in the re-evaluation of the risks and rewards of healthcare and social care work in the wake of the pandemic. We caution against cynicism about gratitude overshadowing the well-being effects that expressing and receiving gratitude can engender, particularly given concerns over the detrimental effects of the pandemic on mental health. PUBLIC CONTRIBUTION: This study involves the analysis of data provided by the public and published on social media.


Assuntos
COVID-19 , Mídias Sociais , Controle de Doenças Transmissíveis , Humanos , Pandemias , SARS-CoV-2 , Medicina Estatal
10.
Med Teach ; 44(10): 1116-1124, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35543345

RESUMO

Quality improvement (QI) projects are a mandatory part of postgraduate medical training in the UK and graduating medical students must be competent in QI theory. We evaluated an educational toolkit that links concepts of sustainable healthcare with established quality improvement methodologies (the SusQI approach, available at www.susqi.org). The SusQI approach was implemented across a range of undergraduate and postgraduate nursing and medical education contexts. Educational strategies included guided online learning, live interactive webinars, small group activities and scaffolded project work. The evaluation strategy was informed by theories of academic motivation, educational value within communities of practice and behaviour change. A simultaneous nested design was tested using a mixed methods survey with input from learners and teachers. 177 survey responses were analysed to quantify and compare self-rated impacts of teaching across different audiences. Qualitative data were inductively coded into themes that were categorised according to above theoretical frameworks. Participants felt that this was 'time well spent' and many described transformative impacts that guided their daily professional practice beyond learning about QI. We suggest that meaningful space is found within both undergraduate and postgraduate healthcare curricula for SusQI, as a way of engaging and motivating learners to contribute to the creation of a sustainable healthcare system.


Assuntos
Educação a Distância , Educação Médica , Currículo , Humanos , Aprendizagem , Melhoria de Qualidade
11.
Med Teach ; 44(3): 257-262, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-33827368

RESUMO

Theatre-based learning is an essential component of undergraduate surgical education and offers a wide range of learning opportunities. However, studies have demonstrated that medical students have not always benefited from this holistic learning environment due to many reasons, including intimidation, hierarchies within the surgical environment and fear of making mistakes. The lead surgical educator's approach is an important influence on the experience and learning of their medical students. These twelve tips are aimed at surgical educators with undergraduate teaching responsibilities. This guidance is based upon evidence from literature and established theories of teaching and learning, supplemented by qualitative interviews with surgeons and medical students. The resulting tips were checked and refined by surgical teaching fellows. These learner-centred tips provide guidance on thorough induction, managing mutual expectations and approaches that optimise teaching and learning in the operating theatre. They are designed to support surgical educators in improving their students' engagement and learning experiences in this setting.


Assuntos
Educação de Graduação em Medicina , Educação Médica , Estudantes de Medicina , Cirurgiões , Educação de Graduação em Medicina/métodos , Humanos , Aprendizagem , Salas Cirúrgicas , Ensino
12.
BMC Med Educ ; 22(1): 1, 2022 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-34980091

RESUMO

BACKGROUND: As a result of the COVID-19 pandemic Imperial College School of Medicine developed a structured volunteering programme involving 398 medical students, across eight teaching hospitals. This case study aims to explore the relationship between the processes, context, participant experiences and impacts of the programme so that lessons can be learned for future emergencies and service-learning programmes. METHODS: Using an illuminative approach to evaluation we invited all volunteers and supervisors to complete a mixed-methods survey. This explored differences in experience across demographics and contextual factors, correlations between aspects of induction, supervision and overall experience, and reviewed the impacts of the programme. Quantitative responses were statistically analysed and qualitative reflections were thematically coded to triangulate and explain quantitative findings. Follow up interviews were carried out to check back findings and co-create conclusions. RESULTS: We received responses from 61 students and 17 supervisors. Student participants described predominantly altruistic motivations and transformational changes to their professional identity driven by feeling included, having responsibility, and engaging in authentic workplace-based learning afforded by freedom from the assessed curriculum. They reported new perspectives on their future professional role within the multidisciplinary team and the value of workplace-based learning. They reported increases in wellbeing and self-esteem related to feeling included and valued, and positively contributing to service provision at a time of need. Significantly higher overall satisfaction was associated with a personalised induction, active supervision, earlier stage of training, and male gender. Gender-related differences were not explained through our data but have been reported elsewhere and warrant further study. The duration, intensity and type of role that volunteers performed was similar across demographics and did not appear to modulate their overall experience. CONCLUSIONS: Whilst acknowledging the uniqueness of emergency volunteering and the survey response rate of 15% of volunteers, we suggest the features of a successful service-learning programme include: a learner-centred induction, regular contact with engaged and appreciative supervisors, and roles where students feel valued. Programmes in similar settings may find that service learning is most impactful earlier in medical students' training and that students with altruistic motivations and meaningful work may flourish without formal outcomes and assessments.


Assuntos
COVID-19 , Educação de Graduação em Medicina , Estudantes de Medicina , Humanos , Masculino , Pandemias , SARS-CoV-2 , Voluntários
13.
Med Teach ; 43(3): 272-286, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33602043

RESUMO

The purpose of this Consensus Statement is to provide a global, collaborative, representative and inclusive vision for educating an interprofessional healthcare workforce that can deliver sustainable healthcare and promote planetary health. It is intended to inform national and global accreditation standards, planning and action at the institutional level as well as highlight the role of individuals in transforming health professions education. Many countries have agreed to 'rapid, far-reaching and unprecedented changes' to reduce greenhouse gas emissions by 45% within 10 years and achieve carbon neutrality by 2050, including in healthcare. Currently, however, health professions graduates are not prepared for their roles in achieving these changes. Thus, to reduce emissions and meet the 2030 Sustainable Development Goals (SDGs), health professions education must equip undergraduates, and those already qualified, with the knowledge, skills, values, competence and confidence they need to sustainably promote the health, human rights and well-being of current and future generations, while protecting the health of the planet.The current imperative for action on environmental issues such as climate change requires health professionals to mobilize politically as they have before, becoming strong advocates for major environmental, social and economic change. A truly ethical relationship with people and the planet that we inhabit so precariously, and to guarantee a future for the generations which follow, demands nothing less of all health professionals.This Consensus Statement outlines the changes required in health professions education, approaches to achieve these changes and a timeline for action linked to the internationally agreed SDGs. It represents the collective vision of health professionals, educators and students from various health professions, geographic locations and cultures. 'Consensus' implies broad agreement amongst all individuals engaged in discussion on a specific issue, which in this instance, is agreement by all signatories of this Statement developed under the auspices of the Association for Medical Education in Europe (AMEE).To ensure a shared understanding and to accurately convey information, we outline key terms in a glossary which accompanies this Consensus Statement (Supplementary Appendix 1). We acknowledge, however, that terms evolve and that different terms resonate variably depending on factors such as setting and audience. We define education for sustainable healthcare as the process of equipping current and future health professionals with the knowledge, values, confidence and capacity to provide environmentally sustainable services through health professions education. We define a health professional as a person who has gained a professional qualification for work in the health system, whether in healthcare delivery, public health or a management or supporting role and education as 'the system comprising structures, curricula, faculty and activities contributing to a learning process'. This Statement is relevant to the full continuum of training - from undergraduate to postgraduate and continuing professional development.


Assuntos
Educação Médica , Planetas , Currículo , Atenção à Saúde , Europa (Continente) , Humanos
14.
BMC Med Educ ; 21(1): 555, 2021 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-34717607

RESUMO

BACKGROUND: The healthcare sector is a major contributor to climate change and there are international calls to mitigate environmental degradation through more sustainable forms of clinical care. The UK healthcare sector has committed to net zero carbon by 2040 and sustainable healthcare is a nationally mandated outcome for all UK graduating doctors who must demonstrate their ability to address social, economic, and environmental challenges. Bristol Medical School piloted successful Sustainability in Quality Improvement (SusQI) workshop, but identified challenges translating classroom learning into clinical practice. This paper aims to identify and address those challenges. METHODS: We conducted five focus groups that identified and iteratively explored barriers and facilitators to practice among medical students, comparing a range of experiences to generate a conceptual model. We then combined our findings with behaviour change theory to generate educational recommendations. RESULTS: Students that applied their learning to the clinical workplace were internally motivated and self-determined but needed time and opportunity to complete projects. Other students were cautious of disrupting established hierarchies and practices or frustrated by institutional inertia. These barriers impacted on their confidence in suggesting or achieving change. A minority saw sustainable healthcare as beyond their professional role. CONCLUSIONS: We present a series of theoretically informed recommendations. These include wider curricular engagement with concepts of sustainable clinical practice; supportive workplace enablement strategies such as workplace champions and co-creation of improvement goals; and time and headspace for students to engage through structured opportunities for credit-bearing project work.


Assuntos
Melhoria de Qualidade , Estudantes de Medicina , Competência Clínica , Humanos , Aprendizagem , Faculdades de Medicina
15.
BMC Med Educ ; 21(1): 425, 2021 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-34384400

RESUMO

BACKGROUND: There is a pressing need for more sustainable healthcare. UK medical graduates are required to apply social, economic, and environmental principles of sustainability to their practice. The Centre for Sustainable Healthcare has developed a sustainability in quality improvement (SusQI) framework and educator's toolkit to address these challenges. We aimed to develop and evaluate SusQI teaching using this toolkit at Bristol Medical School. METHODS: We facilitated a SusQI workshop for all third-year Bristol Medical School students. We used mixed methods including questionnaires, exit interviews and follow-up focus groups to evaluate the outcomes and processes of learning. RESULTS: Students reported: improvements in knowledge, confidence, and attitudes in both sustainable healthcare and quality improvement; increased self-rated likelihood to engage in SusQI projects; and willingness to change practices to reduce environmental impact in their healthcare roles. Factors for successful teaching included: interactivity; collaboration and participation; and real-life, relevant and tangible examples of projects delivered by credible role models. CONCLUSIONS: Students reported that SusQI education supported by the toolkit was effective at building knowledge and skills, and reframed their thinking on sustainability in quality improvement. Combining the two topics provided enhanced motivation for and engagement in both. Further research is needed on the clinical impacts of SusQI learning.


Assuntos
Educação de Graduação em Medicina , Estudantes de Medicina , Currículo , Humanos , Aprendizagem , Melhoria de Qualidade , Faculdades de Medicina
16.
BMC Med Educ ; 21(1): 305, 2021 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-34049545

RESUMO

BACKGROUND: Safe and effective clinical outcomes (SECO) clinics enable medical students to integrate clinical knowledge and skills within simulated environments. This realistic format may better prepare students for clinical practice. We aimed to evaluate how simulated surgical clinics based on the SECO framework aligned with students' educational priorities in comparison with didactic tutorials. METHODS: We delivered two breast surgery SECO-based simulated clinics to Year 3 students during their surgical attachments at a London teaching hospital. All students attended a didactic breast surgery tutorial the previous week. Pre- and post-session surveys and post-session debriefs were used to explore learning gain, processes, preferences and impacts on motivation to learn. Data were analysed using inductive thematic analysis to categorise student views into themes. RESULTS: Seventeen students enrolled in the simulated clinics and debriefs. Students expressed that passing examinations was a key extrinsic motivating factor, although the SECO-based format appeared to shift their motivation for learning towards aspiring to be clinically competent. Self-reported confidence in clinical skills such as history taking and examination improved significantly. Active learning methods were valued. Students expressed a preference for simulated clinics to complement, but not replace, tutorial-based learning. CONCLUSION: The SECO-based simulated clinic promoted a shift towards intrinsic motivation for learning by allowing students to recognise the importance of preparing for clinical practice in addition to passing examinations. Integration of surgical simulated clinics into the undergraduate curriculum could facilitate acquisition of clinical skills through active learning, a method highly valued by students.


Assuntos
Motivação , Estudantes de Medicina , Currículo , Humanos , Londres , Encaminhamento e Consulta
17.
BMC Med Educ ; 21(1): 179, 2021 Mar 24.
Artigo em Inglês | MEDLINE | ID: mdl-33761941

RESUMO

BACKGROUND: The humanities have long been shown to play an important role in the medical school curriculum. However, few studies have looked into the opinions of medical students on the usefulness and necessity of the humanities as well as their extracurricular involvement with them. The aim of this study was to: a) understand medical students' attitude towards the humanities in medical education and b) assess their understanding of the necessary qualities of doctors and how interaction with the humanities affects the development of such attributes. METHODS: A mixed methods survey was designed to elicit demographics, engagement, interest and perspective on curricular positioning, and to explore how students ranked the qualities of a doctor. It was distributed to medical students of all year groups in the 6-year bachelor of medicine, bachelor of surgery (MBBS) course at Imperial College London. RESULTS: One hundred nine fully completed questionnaires were received. No significant difference was found in engagement or interest in the humanities between genders. Students felt strongly that humanities subjects shouldn't be assessed (71:18) though some felt it was necessary for engagement, while no consensus was reached on whether these subjects should be elective or not (38:31). The majority of students wanted more medical humanities to be incorporated into the traditional medical course with a preference of incorporation into the first 3 years. Junior medical students were more likely to rank empathy as a highly desirable attribute than senior students. Students provided qualitative insights into curricular positioning, assessment and value. CONCLUSIONS: This study provides the perspective of medical students on how and whether the humanities should be positioned in medical education. It may be helpful to medical schools that are committed to student involvement in curriculum design.


Assuntos
Educação de Graduação em Medicina , Estudantes de Medicina , Currículo , Feminino , Ciências Humanas , Humanos , Londres , Masculino , Faculdades de Medicina
18.
BMC Med Educ ; 20(1): 12, 2020 Jan 13.
Artigo em Inglês | MEDLINE | ID: mdl-31931784

RESUMO

BACKGROUND: New doctors are expected to assess and manage acutely deteriorating patients from their first days in the hospital. However, current evidence suggests that medical graduates are not prepared for this. We aimed to explore junior doctors' first experiences with unwell patients and how they developed preparedness over time. METHODS: We conducted seven semi-structured interviews with doctors in their first postgraduate year. The interview transcripts underwent inductive thematic analysis using consensual qualitative research approaches. Themes identified were categorised into early experiences of unpreparedness, first experiences of genuine preparedness, and making sense of how they became prepared. Reflection on how participants progressed between the two was facilitated through a sorting and ranking exercise. RESULTS: Most participants initially felt unprepared when responding to acutely unwell patients. They described feeling overwhelmed, apprehensive and challenged. Two main challenges involved knowing when to escalate, and feeling expected to perform beyond their level of competency. A lack of acute care exposure at medical school was a common thread. All participants felt prepared to respond to unwell patients three to six months after starting work. Hands-on experience, reflection, simulation and multidisciplinary team-working were consistently ranked as the most useful learning experiences. CONCLUSION: Starting work as a doctor is a challenging time and preparedness to manage an acutely deteriorating patient is a common area of concern. As preparedness in acute care ranks poorly compared to other outcomes, we see this as an important area for improvement. Our findings suggest that undergraduates may lack sufficient opportunities for scaffolded decision making in acute care, and that increasing the intensity of clinical shadowing may improve preparedness and should inform future educational interventions.


Assuntos
Atitude do Pessoal de Saúde , Competência Clínica , Cuidados Críticos , Educação Médica , Corpo Clínico Hospitalar/educação , Corpo Clínico Hospitalar/psicologia , Adulto , Feminino , Humanos , Masculino , Pesquisa Qualitativa , Autoavaliação (Psicologia) , Reino Unido , Adulto Jovem
19.
J Cell Sci ; 130(20): 3437-3445, 2017 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-29032358

RESUMO

Textbook images of keratin intermediate filament (IF) networks in epithelial cells and the functional compromization of the epidermis by keratin mutations promulgate a mechanical role for this important cytoskeletal component. In stratified epithelia, keratin filaments form prominent radial spokes that are focused onto cell-cell contact sites, i.e. the desmosomes. In this Hypothesis, we draw attention to a subset of keratin filaments that are apposed to the plasma membrane. They form a rim of filaments interconnecting the desmosomes in a circumferential network. We hypothesize that they are part of a rim-and-spoke arrangement of IFs in epithelia. From our review of the literature, we extend this functional role for the subplasmalemmal rim of IFs to any cell, in which plasma membrane support is required, provided these filaments connect directly or indirectly to the plasma membrane. Furthermore, cytoplasmic IF networks physically link the outer nuclear and plasma membranes, but their participation in mechanotransduction processes remain largely unconsidered. Therefore, we also discuss the potential biomechanical and mechanosensory role(s) of the cytoplasmic IF network in terms of such a rim (i.e. subplasmalemmal)-and-spoke arrangement for cytoplasmic IF networks.


Assuntos
Filamentos Intermediários/ultraestrutura , Animais , Membrana Celular/fisiologia , Membrana Celular/ultraestrutura , Citoplasma/fisiologia , Células Epiteliais/fisiologia , Células Epiteliais/ultraestrutura , Humanos , Filamentos Intermediários/fisiologia , Mecanotransdução Celular , Modelos Moleculares , Pele/ultraestrutura
20.
BMC Med Educ ; 19(1): 287, 2019 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-31357970

RESUMO

BACKGROUND: Professional identities are influenced by experiences in the clinical workplace including socialisation processes that may be hidden from academic faculty and potentially divergent from formal curricula. With the current educational emphasis on complexity, preparedness for practice, patient safety and team-working it is necessary to evaluate and respond to what students are learning about collaborative practices during their clinical placements. METHODS: 394 second year medical students at a London medical school were invited to submit a short formative essay as part of their coursework describing, evaluating and reflecting on their experiences of how healthcare professionals work together. Their experiences were derived from having spent two days each week for 25 weeks in clinical contexts across primary and secondary care. We consented 311 participants and used a Consensual Qualitative Research approach to analyse these essays, creating a 'students-eye view' of intra- and interprofessional practices in the workplace. RESULTS: We identified four overarching themes in students' essays:Theme 1: analyses of contextual factors driving team tensions including staff shortages, shifting teams, and infrastructural issues;Theme 2: observations of hierarchical and paternalistic attitudes and behaviours;Theme 3: respect for team members' ability to manage and mitigate tensions and attitudes; andTheme 4: take-forward learning including enthusiasm for quality improvement and system change. CONCLUSIONS: Students are being socialised into a complex, hierarchical, pressurised clinical workplace and experience wide variations in professional behaviours and practices. They articulate a need to find constructive ways forward in the interests of staff wellbeing and patient care. We present educational recommendations including providing safe reflective spaces, using students' lived experience as raw material for systems thinking and quality improvement, and closing the feedback loop with placement sites on behalf of students.


Assuntos
Estágio Clínico , Relações Interprofissionais , Estudantes de Medicina/psicologia , Local de Trabalho , Comportamento Cooperativo , Humanos , Entrevistas como Assunto , Londres , Pesquisa Qualitativa
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