1,238 results on '"Nestel, P."'
Search Results
2. Metabolic and lifestyle factors accelerate disease onset and alter gut microbiome in inflammatory non-communicable diseases
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Rohmann, Nathalie, Geese, Theresa, Nestel, Samantha, Schlicht, Kristina, Geisler, Corinna, Türk, Kathrin, Brix, Fynn, Jensen-Kroll, Julia, Demetrowitsch, Tobias, Bang, Corinna, Franke, Andre, Lieb, Wolfgang, Schulte, Dominik M., Schwarz, Karin, Ruß, Anne-Kathrin, Sharma, Arunabh, Schreiber, Stefan, Dempfle, Astrid, and Laudes, Matthias
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- 2024
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3. Metabolic and lifestyle factors accelerate disease onset and alter gut microbiome in inflammatory non-communicable diseases
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Nathalie Rohmann, Theresa Geese, Samantha Nestel, Kristina Schlicht, Corinna Geisler, Kathrin Türk, Fynn Brix, Julia Jensen-Kroll, Tobias Demetrowitsch, Corinna Bang, Andre Franke, Wolfgang Lieb, Dominik M. Schulte, Karin Schwarz, Anne-Kathrin Ruß, Arunabh Sharma, Stefan Schreiber, Astrid Dempfle, and Matthias Laudes
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Diabetes ,Inflammatory bowel disease ,Biomedical and lifestyle factors ,Diet scores ,Age-at-disease-onset ,Gut microbiome composition ,Medicine - Abstract
Abstract Background Biomedical and lifestyle factors in Western populations have significantly shifted in recent decades, influencing public health and contributing to the increasing prevalence of non-communicable diseases (NCDs) that share inflammation as common pathology. Methods We investigated the relationship between these factors and 11 NCDs in the cross-sectional FoCus cohort (n = 1220), using logistic regression models. Associations with age-at-disease-onset were specifically analyzed for type 2 diabetes (T2D, low-grade chronic inflammation) and inflammatory bowel disease (IBD, high-grade chronic inflammation) in disease-specific cohorts (FoCus-T2D, n = 514; IBD-KC, n = 1110). Important factors for disease risk were identified using Cox-PH-regression models and time-to-event analysis. We further explored the interaction between identified risk factors and gut microbiome composition using linear models. Results Lifestyle factors were clearly linked to disease phenotypes, particularly in T2D and IBD. Still, some factors affected only the age-at-onset, but not disease prevalence. High-quality nutrition significantly delayed onset for both IBD and T2D (IBD: HR = 0.81 [0.66; 0.98]; T2D: HR = 0.45 [0.28; 0.72]). Smoking accelerated T2D onset (HR = 1.82 [1.25; 2.65]) but delayed onset in ulcerative colitis (UC: HR = 0.47 [0.28; 0.79]). Higher microbiota diversity delayed IBD onset (Shannon: HR = 0.58 [0.49; 0.71]) but had no effect on T2D. The abundance of specific microbial genera was strongly associated with various biomedical and lifestyle factors in T2D and IBD. In unaffected controls, these effects were smaller or reversed, potentially indicating a greater susceptibility of the gut microbiome to negative influences in T2D and IBD. Conclusions The dual insights into age-at-disease-onset and gut microbiota composition in disease emphasize the role of certain biomedical and lifestyle factors, e.g., nutrition quality, in disease prevention and management. Understanding these relationships provides a foundation for developing targeted strategies to mitigate the impact of metabolic and inflammatory diseases through lifestyle modifications and gut health management.
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- 2024
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4. Near-Peer Coaching to Enhance Operative Learning: An Educational Innovation for Surgical Training
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Alexander J. Papachristos, MSurgicalEd, Elizabeth Molloy, PhD, Juanita N. Chui, MD, Monica Ghidinelli, PhD, Simon Kitto, PhD, Debra Nestel, PhD, and Benjamin P. T. Loveday, PhD
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Surgery ,RD1-811 - Abstract
Objective:. To design, implement, and evaluate a near-peer coaching model to enhance operative learning in general surgery training. Background:. There is an urgent need to maximize operative learning in surgical education. Trainees find barriers to operative learning difficult to navigate and often sacrifice educational opportunities for the sake of impression management. Methods:. A prospective cohort study was conducted over a 6-month period following design and implementation of a trainee-led near-peer coaching model; “SPICE” (Set goals, Plan, Imagine, Comment and feedback, Evaluate and reflect). Semistructured interviews were conducted to explore trainees’ experiences of the model. Results:. Twelve trainees participated in the study. The near-peer coaching encounters provided trainees with the psychological safety to be honest about learning needs, validated insecurities, and mitigated the pressures associated with impression management that consistently shaped consultant–trainee relationships. Trainees described improved operative performance, increased self-confidence, and a greater ability to adapt to the unexpected. Trainees adapted the use of the SPICE model to conventional consultant–trainee dynamics, which facilitated learning conversations and negotiation of operative opportunities. On a broader scale, trainees noticed an improvement in the teaching culture of the unit, describing that the use of the model legitimized the importance of perioperative learning conversations and increased consultant enthusiasm for teaching. Conclusions:. Near-peer coaching created a unique psychological safety that facilitated authentic reflection and goal setting and improved trainee confidence. The benefits of the SPICE model were translated to other contexts and facilitated entrustment in conventional consultant–trainee relationships.
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- 2024
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5. Dairy Foods: Beneficial Effects of Fermented Products on Cardiometabolic Health
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Nestel, Paul J. and Mori, Trevor A.
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- 2023
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6. Regulation of hippocampal mossy fiber-CA3 synapse function by a Bcl11b/C1ql2/Nrxn3(25b+) pathway
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Artemis Koumoundourou, Märt Rannap, Elodie De Bruyckere, Sigrun Nestel, Carsten Reissner, Alexei V Egorov, Pengtao Liu, Markus Missler, Bernd Heimrich, Andreas Draguhn, and Stefan Britsch
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Bcl11b/Ctip2 ,transcription factors ,mossy fiber-CA3 synapse ,Neurexin ,C1ql2 ,neurodevelopmental disorders ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
The transcription factor Bcl11b has been linked to neurodevelopmental and neuropsychiatric disorders associated with synaptic dysfunction. Bcl11b is highly expressed in dentate gyrus granule neurons and is required for the structural and functional integrity of mossy fiber-CA3 synapses. The underlying molecular mechanisms, however, remained unclear. We show in mice that the synaptic organizer molecule C1ql2 is a direct functional target of Bcl11b that regulates synaptic vesicle recruitment and long-term potentiation at mossy fiber-CA3 synapses in vivo and in vitro. Furthermore, we demonstrate C1ql2 to exert its functions through direct interaction with a specific splice variant of neurexin-3, Nrxn3(25b+). Interruption of C1ql2-Nrxn3(25b+) interaction by expression of a non-binding C1ql2 mutant or by deletion of Nrxn3 in the dentate gyrus granule neurons recapitulates major parts of the Bcl11b as well as C1ql2 mutant phenotype. Together, this study identifies a novel C1ql2-Nrxn3(25b+)-dependent signaling pathway through which Bcl11b controls mossy fiber-CA3 synapse function. Thus, our findings contribute to the mechanistic understanding of neurodevelopmental disorders accompanied by synaptic dysfunction.
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- 2024
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7. A real-time remote surveillance system for fruit flies of economic importance: sensitivity and image analysis
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Diller, Yoshua, Shamsian, Aviv, Shaked, Ben, Altman, Yam, Danziger, Bat-Chen, Manrakhan, Aruna, Serfontein, Leani, Bali, Elma, Wernicke, Matthias, Egartner, Alois, Colacci, Marco, Sciarretta, Andrea, Chechik, Gal, Alchanatis, Victor, Papadopoulos, Nikos T., and Nestel, David
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- 2023
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8. Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae)
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M. Ben-Yosef, Y. Altman, E. Nemni-Lavi, N.T. Papadopoulos, and D Nestel
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bactrocera zonata ,thermal tolerance ,tmax ,environmental stress ,nutritional state ,cold tolerance ,Biology (General) ,QH301-705.5 - Abstract
Within the factors affecting insect tolerance to extreme environmental conditions, insect nutrition, particularly of immature stages, has received insufficient attention. In the present study, we address this gap by investigating the effects of larval nutrition on heat and cold tolerance of adult Bactrocera zonata – an invasive, polyphagous fruit fly pest. We manipulated the nutritional content in the larval diet by varying the amount of added yeast (2–10% by weight), while maintaining a constant sucrose content. Adults derived from the different larval diets were tested for their tolerance to extreme heat and cold stress. Restricting the amount of yeast reduced the efficacy of the larval diet (i.e. number of pupae produced per g of diet) as well as pupal and adult fresh weight, both being significantly lower for yeast-poor diets. Additionally, yeast restriction during the larval stage (2% yeast diet) significantly reduced the amount of protein but not lipid reserves of newly emerged males and females. Adults maintained after emergence on granulated sugar and water for 10 days were significantly more tolerant to extreme heat (i.e. knock-down time at 42 oC) when reared as larvae on yeast-rich diets (8% and 10% yeast) compared to counterparts developing on a diet containing 2% yeast. Nevertheless, the composition of the larval diet did not significantly affect adult survival following acute cold stress (exposure to −3°C for 2 hrs.). These results are corroborated by previous findings on Drosophilid flies. Possible mechanisms leading to nutrition-based heat-tolerance in flies are discussed.
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- 2023
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9. Endoscopy training in Australia during COVID‐19: Efficacy and knowledge assessment of gastroenterology and general surgery trainees
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Leonardo Zorron Cheng Tao Pu, Daniel R A Cox, Kim H Be, Jonathan Ng, Fiona Yeaman, Rajit A Gilhotra, Marios Efthymiou, Rhys Vaughan, Debra Nestel, Marcos V Perini, Vijayaragavan Muralidharan, and Sujievvan Chandran
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COVID‐19 ,endoscopy ,gastroenterology ,general surgery ,medical education ,residency ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Abstract Background and Aim During COVID‐19, restrictions to elective endoscopy were introduced worldwide. A reduction in procedures may impact trainees' endoscopy learning. This study aims to assess Australian advanced gastroenterology and general surgery trainees' self‐perceived efficacy and knowledge in endoscopy during the pandemic. Methods All Australian gastroenterology and general surgery trainees in their last 2 years of accredited training were invited to participate through email (2020–2021 and 2021–2022 training cycles). The primary outcome was to assess trainees' self‐efficacy and knowledge regarding gastrointestinal endoscopy. Secondary outcomes included subgroup analysis between gastroenterology and general surgery trainees. Self‐perceived efficacy was assessed with Likert‐scale questions on 20 endoscopy procedures and knowledge was assessed through 21 endoscopy‐related multiple choice questions. Results Eighty‐one trainees responded to a self‐efficacy questionnaire and 77 responded to the knowledge questionnaire. Over 90% of the trainees were confident or extremely confident in diagnostic endoscopy, but only half demonstrated similar efficacy for therapeutic endoscopy. The efficacy for basic endoscopy procedures was higher for gastroenterology trainees (64.0% vs 51.1%, P
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- 2022
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10. Optimization of Brewer’s Yeast Quantity in Liquid and Gel Larval Diets for the Mediterranean Fruit Fly
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Paraschos N. Prekas, Vasilis G. Rodovitis, Evmorfia P. Bataka, David Nestel, Christos T. Nakas, and Nikos T. Papadopoulos
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medfly ,Tephritidae ,fitness ,rearing ,liquid diet ,gel diet ,Science - Abstract
Several artificial larval diets have been developed, evaluated and used for mass-rearing of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann) (Diptera: Teprhitidae). There are several efforts to reduce the cost of rearing and optimize the quality of the produced sterile males that are destined for release in sterile insect release programs. Survival, growth, longevity and reproductive capacity of sterile males are strongly connected with the most expensive ingredient, the brewer’s yeast (protein), in the larval diet. The current study focused on settling the optimal content of brewer’s yeast in a liquid diet and a gel diet. Egg hatch rates, developmental duration of immatures, pupation rate, pupae and adult survival were recorded as indicators of quantity and quality of the produced adults. Egg hatch was higher and larval developmental duration longer in the gel diet. In contrast to the liquid diet, an increase in brewer’s yeast concentration was correlated with increased pupation rate and pupae survival in the gel diet. Reducing brewer’s yeast up to 50% of its initial quantity had no significant effect on the survival of the emerging adults regardless of the diet type. Our findings may contribute to the production of low-cost and effective diets for use in mass-rearing facilities of medflies.
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- 2023
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11. ‘It’s going to change the way we train’: Qualitative evaluation of a transformative faculty development workshop
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Ong, Caroline Choo Phaik, Foo, Yang Yann, Chiu, Fong Yee, and Nestel, Debra
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- 2022
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12. Long-Term Impact of a Low-Cost Paediatric Intussusception Air Enema Reduction Simulation-Based Education Programme in a Low-Middle Income Country
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Nataraja, R. M., Yin Mar Oo, Ljuhar, D., Pacilli, M., Nyo Nyo Win, Stevens, S., Aye Aye, and Nestel, D.
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- 2022
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13. Dairy Foods: Is Its Cardiovascular Risk Profile Changing?
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Nestel, Paul J. and Mori, Trevor A.
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- 2022
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14. Measuring impostor phenomenon in healthcare simulation educators: a validation of the clance impostor phenomenon scale and leary impostorism scale
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Kirsty J. Freeman, Stephen Houghton, Sandra E. Carr, and Debra Nestel
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Impostor Phenomenon ,Healthcare Simulation Educators ,Clance Impostor Phenomenon Scale ,Leary Impostor Scale ,Exploratory Factors Analysis ,Special aspects of education ,LC8-6691 ,Medicine - Abstract
Abstract Background Impostor phenomenon is a term used to describe feelings of intellectual and professional fraudulence. The Clance Impostor Phenomenon Scale and the Leary Impostorism Scale are two self-report measures used to determine whether an individual experiences impostor phenomenon. This study examined the psychometric properties of both measures in healthcare simulation educators. Methods The study sample comprised 148 educators, 114 (77%) females, 34 (23%) males, who completed an online version of each instrument. Exploratory factor analysis was used to examine the factor structure of the Clance Impostor Phenomenon Scale and the Leary Impostorism Scale. Results Exploratory factor analysis revealed that for both instruments a one-factor solution best fit the data, suggesting all items in both measures fit onto a single theoretical construct. Both instruments demonstrated high internal reliability, with the Cronbach’s alpha for the Clance Impostor Phenomenon Scale being α = .96 and the Leary Impostorism Scale α = .95. Conclusions This study suggests that impostor phenomenon as measured by the Clance Impostor Phenomenon Scale and the Leary Impostorism Scale is a unidimensional construct among healthcare simulation educators. With a growing interest in impostor phenomenon, the present findings will assist researchers to evaluate the phenomenon in healthcare settings.
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- 2022
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15. Evaluation of IMproving Palliative care Education and Training Using Simulation in Dementia (IMPETUS-D) a staff simulation training intervention to improve palliative care of people with advanced dementia living in nursing homes: a cluster randomised controlled trial
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Joanne Tropea, Debra Nestel, Christina Johnson, Barbara J. Hayes, Anastasia F. Hutchinson, Caroline Brand, Brian H. Le, Irene Blackberry, Gideon A. Caplan, Ross Bicknell, Graham Hepworth, and Wen K. Lim
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End-of-life care ,Palliative care ,Dementia ,Staff training ,Nursing homes ,Geriatrics ,RC952-954.6 - Abstract
Abstract Background People with dementia have unique palliative and end-of-life needs. However, access to quality palliative and end-of-life care for people with dementia living in nursing homes is often suboptimal. There is a recognised need for nursing home staff training in dementia-specific palliative care to equip them with knowledge and skills to deliver high quality care. Objective The primary aim was to evaluate the effectiveness of a simulation training intervention (IMPETUS-D) aimed at nursing home staff on reducing unplanned transfers to hospital and/or deaths in hospital among residents living with dementia. Design Cluster randomised controlled trial of nursing homes with process evaluation conducted alongside. Subjects & setting One thousand three hundred four people with dementia living in 24 nursing homes (12 intervention/12 control) in three Australian cities, their families and direct care staff. Methods Randomisation was conducted at the level of the nursing home (cluster). The allocation sequence was generated by an independent statistician using a computer-generated allocation sequence. Staff from intervention nursing homes had access to the IMPETUS-D training intervention, and staff from control nursing homes had access to usual training opportunities. The predicted primary outcome measure was a 20% reduction in the proportion of people with dementia who had an unplanned transfer to hospital and/or death in hospital at 6-months follow-up in the intervention nursing homes compared to the control nursing homes. Results At 6-months follow-up, 128 (21.1%) people with dementia from the intervention group had an unplanned transfer or death in hospital compared to 132 (19.0%) residents from the control group; odds ratio 1.14 (95% CI, 0.82-1.59). There were suboptimal levels of staff participation in the training intervention and several barriers to participation identified. Conclusion This study of a dementia-specific palliative care staff training intervention found no difference in the proportion of residents with dementia who had an unplanned hospital transfer. Implementation of the intervention was challenging and likely did not achieve adequate staff coverage to improve staff practice or resident outcomes. Trial registration Australian New Zealand Clinical Trials Registry (ANZCTR): ACTRN12618002012257 . Registered 14 December 2018.
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- 2022
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16. From clinician to educator: A scoping review of professional identity and the influence of impostor phenomenon
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Kirsty J Freeman, Sandra E Carr, Brid Phillips, Farah Noya, and Debra Nestel
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professional identity ,impostor phenomenon ,healthcare educators ,health professions education ,scoping review ,Education (General) ,L7-991 ,Medicine (General) ,R5-920 - Abstract
Introduction: As healthcare educators undergo a career transition from providing care to providing education, their professional identity can also transition accompanied by significant threat. Given their qualifications are usually clinical in nature, healthcare educators’ knowledge and skills in education and other relevant theories are often minimal, making them vulnerable to feeling fraudulent in the healthcare educator role. This threat and vulnerability is described as the impostor phenomenon. The aim of this study was to examine and map the concepts of professional identity and the influence of impostor phenomenon in healthcare educators. Methods: The authors conducted a scoping review of health professions literature. Six databases were searched, identifying 121 relevant articles, eight meeting our inclusion criteria. Two researchers independently extracted data, collating and summarising the results. Results: Clinicians who become healthcare educators experience identity ambiguity. Gaps exist in the incidence and influence of impostor phenomenon in healthcare educators. Creating communities of practice, where opportunities exist for formal and informal interactions with both peers and experts, has a positive impact on professional identity construction. Faculty development activities that incorporate the beliefs, values and attributes of the professional role of a healthcare educator can be effective in establishing a new professional identity. Conclusion: This review describes the professional identity ambiguity experienced by clinicians as they take on the role of healthcare educator and solutions to ensure a sustainable healthcare education workforce.
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- 2022
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17. Measuring impostor phenomenon in healthcare simulation educators: a validation of the Clance Impostor Phenomenon Scale and Leary Impostorism Scale
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Freeman, Kirsty J., Houghton, Stephen, Carr, Sandra E., and Nestel, Debra
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- 2022
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18. Evaluation of IMproving Palliative care Education and Training Using Simulation in Dementia (IMPETUS-D) a staff simulation training intervention to improve palliative care of people with advanced dementia living in nursing homes: a cluster randomised controlled trial
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Tropea, Joanne, Nestel, Debra, Johnson, Christina, Hayes, Barbara J., Hutchinson, Anastasia F., Brand, Caroline, Le, Brian H., Blackberry, Irene, Caplan, Gideon A., Bicknell, Ross, Hepworth, Graham, and Lim, Wen K.
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- 2022
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19. Handling Patient Emergencies During Radiopharmaceutical Therapy.
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Maughan, Nichole M., Zoberi, Jacqueline E., Garcia-Ramirez, Jose L., Michalski, Jeff M., Baumann, Brian C., Amurao, Maxwell, Luechtefeld, David, Marko, Areti, Nestel, Angela, and Kim, Hyun
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Radiopharmaceutical therapy (RPT) is a rapidly growing treatment modality. Though uncommon, patients may experience complications during their RPT treatment, which may trigger a rapid response from the hospital team. However, members of this team are typically not familiar with precautions for radiation safety. During these events, it is important to prioritize the patient's health over all else. There are some practices that can help minimize the risk of radiation contamination spread and exposure to staff while tending to the patient. We formed a team to develop a standard protocol for handling patient emergencies during RPT treatment. This team consisted of an authorized user, radiation safety officer, medical physicist, nurse, RPT administration staff, and a quality/safety coordinator. The focus for developing this standardized protocol for RPT patient emergencies was 3-fold: (1) stabilize the patient; (2) reduce radiation exposure to staff; and (3) limit the spread of radiation contamination. We modified our hospital's existing rapid response protocol to account for the additional staff and tasks needed to accomplish all 3 of these goals. Each team member was assigned specific responsibilities, which include serving as a gatekeeper to restrict traffic, managing the crash cart, performing chest compressions, timing chest compressions, documenting the situation, and monitoring/managing radiation safety in the area. We developed a small, easy-to-read card for rapid response staff to read while they are en route to the area so they can be aware of and prepare for the unique circumstances that RPT treatments present. Though rapid response events with RPT patients are uncommon, it is important to have a standardized protocol for how to handle these situations beforehand rather than improvise in the moment. We have provided an example of how our team adapted our hospital's current rapid response protocol to accommodate RPT patients. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Cholesterol transport between red blood cells and lipoproteins contributes to cholesterol metabolism in blood
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Ryunosuke Ohkawa, Hann Low, Nigora Mukhamedova, Ying Fu, Shao-Jui Lai, Mai Sasaoka, Ayuko Hara, Azusa Yamazaki, Takahiro Kameda, Yuna Horiuchi, Peter J. Meikle, Gerard Pernes, Graeme Lancaster, Michael Ditiatkovski, Paul Nestel, Boris Vaisman, Denis Sviridov, Andrew Murphy, Alan T. Remaley, Dmitri Sviridov, and Minoru Tozuka
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adenosine 5′-triphosphate binding cassette transporter A1 ,apolipoprotein A-I ,cholesterol/metabolism ,cholesterol flux ,erythrocyte ,high density lipoprotein ,Biochemistry ,QD415-436 - Abstract
Lipoproteins play a key role in transport of cholesterol to and from tissues. Recent studies have also demonstrated that red blood cells (RBCs), which carry large quantities of free cholesterol in their membrane, play an important role in reverse cholesterol transport. However, the exact role of RBCs in systemic cholesterol metabolism is poorly understood. RBCs were incubated with autologous plasma or isolated lipoproteins resulting in a significant net amount of cholesterol moved from RBCs to HDL, while cholesterol from LDL moved in the opposite direction. Furthermore, the bi-directional cholesterol transport between RBCs and plasma lipoproteins was saturable and temperature-, energy-, and time-dependent, consistent with an active process. We did not find LDLR, ABCG1, or scavenger receptor class B type 1 in RBCs but found a substantial amount of ABCA1 mRNA and protein. However, specific cholesterol efflux from RBCs to isolated apoA-I was negligible, and ABCA1 silencing with siRNA or inhibition with vanadate and Probucol did not inhibit the efflux to apoA-I, HDL, or plasma. Cholesterol efflux from and cholesterol uptake by RBCs from Abca1+/+ and Abca1−/− mice were similar, arguing against the role of ABCA1 in cholesterol flux between RBCs and lipoproteins. Bioinformatics analysis identified ABCA7, ABCG5, lipoprotein lipase, and mitochondrial translocator protein as possible candidates that may mediate the cholesterol flux. Together, these results suggest that RBCs actively participate in cholesterol transport in the blood, but the role of cholesterol transporters in RBCs remains uncertain.
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- 2020
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21. Physiotherapy students can be educated to portray realistic patient roles in simulation: a pragmatic observational study
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Shane A. Pritchard, Jennifer L. Keating, Debra Nestel, and Felicity C. Blackstock
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Simulation ,Physiotherapy ,Simulation-based education ,Peer simulation ,Simulated patient ,Standardized patient ,Special aspects of education ,LC8-6691 ,Medicine - Abstract
Abstract Background Simulation-based education (SBE) has many benefits for learners, but costs can limit embedding SBE in health professional curricula. Peer simulation involves students portraying patient roles, and may reduce costs while still providing the benefits of other SBE experiences. However, the quality of the SBE may be impacted if students cannot portray authentic and realistic patient roles. The aim of this study was to investigate whether targeted education was associated with observable changes to physiotherapy students’ abilities to portray patient roles in SBE. Methods Second year pre-registration physiotherapy students (n = 40) participated. Students completed online and face-to-face education about SBE, patient portrayal skills, and how to portray a specific patient role. Students were video-recorded portraying patient roles in practical exams before and after the program. Three blinded independent assessors rated the overall quality of portrayals using a purpose-developed assessment instrument. Results Twenty-three sets of pre- and post-program videos were analysed. Correlations between assessor scores spanned 0.62 to 0.82 for analyses of interest, which justified using average assessor ratings in analysis. Statistically significant higher scores were seen for post-program assessments for overall portrayal scores (mean difference 6.5, 95%CI [1.51–11.45], p = 0.013), accuracy (mean difference 3.4, 95%CI [0.69–6.13], p = 0.016) and quality (mean difference 3.1, 95%CI [0.64–5.49], p = 0.016). Conclusions Physiotherapy students appear capable of playing realistic patient roles. Peer simulation can be embedded into health professional programs, and education in patient role portrayal appears to be associated with improvements in portrayal quality and realism. Given these findings, further investigation, including testing program effects in a randomised study, is warranted.
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- 2020
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22. What Should We Teach the Teachers? Identifying the Learning Priorities of Clinical Supervisors
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Bearman, Margaret, Tai, Joanna, Kent, Fiona, Edouard, Vicki, Nestel, Debra, and Molloy, Elizabeth
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Clinicians who teach are essential for the health workforce but require faculty development to improve their educational skills. Curricula for faculty development programs are often based on expert frameworks without consideration of the learning priorities as defined by clinical supervisors themselves. We sought to inform these curricula by highlighting clinical supervisors own requirements through answering the research question: what do clinical supervisors identify as relative strengths and areas for improvement in their teaching practice? This mixed methods study employed a modified version of the Maastricht Clinical Teaching Questionnaire (mMCTQ) which included free-text reflections. Descriptive statistics were calculated and content analysis was conducted on textual comments. 481 (49%) of 978 clinical supervisors submitted their mMCTQs and associated reflections for the research study. Clinical supervisors self-identified relatively strong capability with interpersonal skills or attributes and indicated least capability with assisting learners to explore strengths, weaknesses and learning goals. The qualitative category "establishing relationships" was the most reported strength with 224 responses. The qualitative category "feedback" was the most reported area for improvement, with 151 responses. Key areas for curricular focus include: improving feedback practices; stimulating reflective and agentic learning; and managing the logistics of a clinical education environment. Clinical supervisors' self-identified needs provide a foundation for designing engaging and relevant faculty development programs.
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- 2018
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23. Effects of Thermal Acclimation on the Tolerance of Bactrocera zonata (Diptera: Tephritidae) to Hydric Stress
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Michael Ben-Yosef, Eleni Verykouki, Yam Altman, Esther Nemni-Lavi, Nikos T. Papadopoulos, and David Nestel
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Tephritidae ,Bactrocera zonata ,desiccation resistance ,temperature acclimation ,nutritional reserves ,Physiology ,QP1-981 - Abstract
Insects, similarly to other small terrestrial invertebrates, are particularly susceptible to climatic stress. Physiological adjustments to cope with the environment (i.e., acclimation) together with genetic makeup eventually determine the tolerance of a species to climatic extremes, and constrain its distribution. Temperature and desiccation resistance in insects are both conditioned by acclimation and may be interconnected, particularly for species inhabiting xeric environments. We determined the effect of temperature acclimation on desiccation resistance of the peach fruit fly (Bactrocera zonata, Tephritidae) – an invasive, polyphagous pest, currently spreading through both xeric and mesic environments in Africa and the Eurasian continent. Following acclimation at three constant temperatures (20, 25, and 30°C), the survival of adult flies deprived of food and water was monitored in extreme dry and humid conditions (90% relative humidity, respectively). We found that flies acclimated at higher temperatures were significantly heavier, and contained more lipids and protein. Acclimation temperature significantly and similarly affected the survival of males and females at both high and low humidity conditions. In both cases, flies maintained at 30°C survived longer compared to 20 and 25°C – habituated counterparts. Regardless of the effect of acclimation temperature on survival, overall life expectancy was significantly shortened when flies were assayed under desiccating conditions. Additionally, our experiments indicate no significant difference in survival patterns between males and females, and that acclimation temperature had similar effects after both short (5–10 days) and long (11–20 days) acclimation periods. We conclude that acclimation at 30°C prolongs the survival of B. zonata, regardless of ambient humidity levels. Temperature probably affected survival through modulating feeding and metabolism, allowing for accumulation of larger energetic reserves, which in turn, promoted a greater ability to resist starvation, and possibly desiccation as well. Our study set the grounds for understanding the phenotypic plasticity of B. zonata from the hydric perspective, and for further evaluating the invasion potential of this pest.
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- 2021
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24. Interprofessional simulation in a student community clinic: insights from an educational framework and contact theory
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Susan Waller and Debra Nestel
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Introduction Simulation in community care is a relatively understudied area. In this paper, we report a qualitative evaluation of the Simulated Client Interprofessional Education (SCIPE) program in a community clinic for undergraduate health and social care students in a rural setting. We sought to explore the stakeholders’ perceptions and experiences of training for, and conduct of, a simulated client-based activity to support the development of collaborative practice of students. We used an educational framework (presage, process, product–3P) and contact theory to analyse the evaluation data and suggest improvement strategies. Methods Data on professional characteristics was collected from facilitators, simulated client and students. Facilitators and simulated clients received training. Written evaluations were collected after training and after the simulated clinics. Purposively sampled facilitators, students and community partner agencies participated in individual semi-structured interviews to gain deeper insights into experiences. Results Fourteen clinics involved 5 facilitators, 12 simulated clients and 40 students. Fifteen interviews were conducted. The SCIPE program led to perceived improvements in students’ communication and awareness of interprofessional collaboration. Participation in the program enabled students to experience a holistic approach to client interviewing and development of competency in collaborative goal setting. Further attention to presage and ability of facilitators to build positive contact conditions was identified. Coordination from a central site facilitated exchange and quality assurance for all elements of the program. Scoping of conditions of positive contact enabled a greater understanding of students’ and facilitators’ evaluation of the experience and constraints which would be modifiable for future improvement and sustainability. Discussion Although the SCIPE program benefited students, the need for more explicit organisational engagement and support was revealed in interviews. The use of 3P and contact theory was helpful in identifying elements of the program for maintenance and development. Future research could follow students into practice to see if the behaviours are sustained and translated. Strengths included broad stakeholder involvement and immediate feedback. The key limitation was that the activity lacked explicit institutional support, facilitators required further training in briefing and the outcomes largely refer to participants’ perceptions and may not translate to practice.
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- 2019
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25. CRB1 Gene Mutation Causing Different Phenotypes of Leber Congenital Amaurosis in Siblings
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Shaheryar Ahmed Khan and Achim Richard Nestel
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CRB1 ,LCA ,Retinitis Pigmentosa ,Rod cone Dystrophy ,Ophthalmology ,RE1-994 - Abstract
Purpose: We report a rare case of CRB1gene mutation in two siblings (sisters) affected with the exact same genetic mutation on both CRB1genes resulting in varying phenotypes. Case Report: CRB1gene mutation in this case has resulted in causing varying degrees of Leber congenital amaurosis (LCA) in both sisters with a more severe phenotype in the older sibling causing LCA-8 with retinitis pigmentosa spectrum in both eyes and a milder phenotype causing LCA-8 with less severe rod cone dystrophy in the younger sister. Conclusion: In summary, the mechanisms of varying phenotypes resulting from CRB1 genetic mutation are still not well understood. We concluded that the presence of different phenotypes associated with identical genotypic mutation of a single gene in siblings or in a family is important especially when dealing with retinal dystrophies.
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- 2019
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26. A screen-based simulation training program to improve palliative care of people with advanced dementia living in residential aged care facilities and reduce hospital transfers: study protocol for the IMproving Palliative care Education and Training Using Simulation in Dementia (IMPETUS-D) cluster randomised controlled trial
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Joanne Tropea, Christina E. Johnson, Debra Nestel, Sanjoy K. Paul, Caroline A. Brand, Anastasia F. Hutchinson, Ross Bicknell, and Wen Kwang Lim
- Subjects
Dementia ,Cluster RCT ,Palliative care ,End-of-life care ,Simulation training ,Care worker education ,Special situations and conditions ,RC952-1245 - Abstract
Abstract Background Many people with advanced dementia live in residential aged care homes. Care home staff need the knowledge and skills to provide high-quality end-of-life (EOL) dementia care. However, several studies have found EOL dementia care to be suboptimal, and care staff have reported they would benefit from training in palliative care and dementia. Simulation offers an immersive learning environment and has been shown to improve learners’ knowledge and skills. However, there is little research on simulation training for residential care staff. This article presents the development and evaluation protocol of IMproving Palliative care Education and Training Using Simulation in Dementia (IMPETUS-D) - a screen-based simulation training program on palliative dementia care, targeted at residential care staff. IMPETUS-D aims to improve the quality of palliative care provided to people living with dementia in residential care homes, including avoiding unnecessary transfers to hospital. Methods A cluster RCT will assess the effect of IMPETUS-D. Twenty-four care homes (clusters) in three Australian cities will be randomised to receive either the IMPETUS-D intervention or usual training opportunities (control). The primary outcome is to reduce transfers to hospital and deaths in hospital by 20% over 6-months in the intervention compared to the control group. Secondary outcomes include uptake of goals of care plans over 6 and 12 months, change in staff knowledge and attitudes towards palliative dementia care over 6 months, change in transfers to hospital and deaths in hospital over 12 months. For the primary analysis logistic regression models will be used with standard errors weighted by the cluster effects. A mixed methods process evaluation will be conducted alongside the cluster RCT to assess the mechanisms of impact, the implementation processes and contextual factors that may influence the delivery and effects of the intervention. Discussion In Australia, the need for high-quality advanced dementia care delivered in residential aged care is growing. This study will assess the effect of IMPETUS-D a new simulation-based training program on dementia palliative and EOL care. This large multisite trial will provide robust evidence about the impact of the intervention. If successful, it will be distributed to the broader residential care sector. Trial registration ANZCTR, ACTRN12618002012257. Registered 14 December 2018.
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- 2019
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27. Design, delivery and evaluation of a simulation‐based workshop for health professional students on falls prevention in acute care settings
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Debra Kiegaldie, Debra Nestel, Elizabeth Pryor, Cylie Williams, Kelly‐Ann Bowles, Stephen Maloney, and Terry Haines
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education design ,falls prevention ,falls prevention education ,health professional education research ,simulated patients ,simulation ,Nursing ,RT1-120 - Abstract
Abstract Aims and objectives To describe the design, delivery and evaluation outcomes of a simulation‐based educational workshop to teach a patient‐centred falls prevention strategy to health professional students tasked with implementing the strategy during clinical placement. Background Falls are among the most common and costly threat to patient safety. The Safe Recovery Programme (SRP) is an evidence‐based, one‐to‐one communication approach with demonstrated efficacy at preventing falls in the postgraduate context. Simulation‐based education (SBE) is commonly used to address issues of patient safety but has not been widely incorporated into falls prevention. Methods This study was a Pre–Post‐test intervention design. Health professional students were taught how to deliver the SRP in an SBE workshop. The workshop incorporated content delivery, role‐play simulations and interactions with a simulated patient. Students completed surveys immediately before and after the workshop and after clinical placement. Linear and logistic regression analysis was undertaken to identify differences within each pairwise comparison at the three time points. Qualitative free text responses underwent content analysis. Results There were 178 students trained. The educational design of the programme described in this paper was highly valued by students. Following the workshop, students' falls knowledge increased and they correctly identified evidence‐based strategies except bedrail use and patient sitters. Following clinical placement, fewer SBE students correctly identified evidence surrounding bed alarm use. Students became more confident about falls communication post‐SBE; however, this confidence decreased postclinical placement. Motivation to implement the SRP decreased between postworkshop and postclinical placement time points. Conclusions Falls research often includes educational components but previous studies have failed to adequately describe educational methods. Students learnt about best evidence falls prevention strategies using interactive educational methodologies with a workshop viewed by students as being well‐designed and assisting their learning from theory to practice. While students valued the delivery of the SRP using SBE, confidence and motivation to implement falls strategies were not sustained following clinical placement. A programme of education including SBE can be used to support the delivery of falls‐based education, but further research is needed to identify what factors may influence student's motivation and confidence to implement falls prevention strategies during clinical placement.
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- 2019
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28. Words matter: towards a new lexicon for ‘nontechnical skills’ training
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Paul Murphy, Debra Nestel, and Gerard J. Gormley
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Computer applications to medicine. Medical informatics ,R858-859.7 - Published
- 2019
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29. Exploring undergraduate nursing student interactions with virtual patients to develop ‘non-technical skills’ through case study methodology
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Monica Peddle, Margaret Bearman, Lisa Mckenna, and Debra Nestel
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Virtual patient ,Simulation ,Non-technical skills ,Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Background Virtual patients are a recent addition to the educational arsenal to develop non-technical skills in undergraduate health professionals. The Virtual Simulated Patient Resource (www.vspr.net.au) is a web-based resource that uses branching, narrative virtual patients to develop knowledge, attitude and practice of all categories of non-technical skills in undergraduate health professionals. However, there is limited literature exploring how the interaction with a virtual patient influences the development of knowledge, attitude and practice of non-technical skills in undergraduate nursing students. Methods An intrinsic case study method, using focus groups and individual interviews, enabled exploration of the experience of undergraduate nursing students when interacting with a virtual patient to develop non-technical skills. Purposive sampling identified participants to address the research question. Framework analysis supported by a codebook enabled deductive and inductive data analysis. Results Forty-five first-year and 31 third-year students consented to participate. Findings indicated that the different years interacted differently with the virtual patients. Four themes were recognised in the data: how the virtual patients enabled learning non-technical skills, learning surrounding the virtual patient encounter, changing the way students perceive practice and potential limitations to learning. Conclusions Interactions with virtual patients influence learning knowledge, attitudes and practice of non-technical skills in undergraduate nursing students via authenticity in the virtual patient interaction, socialisation to the professional role, vicarious learning and learning by making mistakes. Potential limitations to learning from virtual patient interactions include fear, overconfidence, groupthink and confusion. To manage limitations to learning, facilitation approaches, opportunities for reflection, constructive feedback and debriefing may be key. This study demonstrates learning non-technical skills via interactions with virtual patients can change the way students perceive practice, with learning transferable to the clinical setting to support safe and competent patient care.
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- 2019
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30. Synopsis of an integrated guidance for enhancing the care of familial hypercholesterolaemia: an Australian perspective
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Gerald F. Watts, David R. Sullivan, David L. Hare, Karam M. Kostner, Ari E. Horton, Damon A. Bell, Tom Brett, Ronald J. Trent, Nicola K. Poplawski, Andrew C. Martin, Shubha Srinivasan, Robert N. Justo, Clara K. Chow, Jing Pang, Zanfina Ademi, Justin J Ardill, Wendy Barnett, Timothy R Bates, Lawrence J Beilin, Warrick Bishop, J Andrew Black, Alex Brown, John R Burnett, Christina A Bursill, Alison Colley, Peter M Clifton, Elif I Ekinci, Gemma A Figtree, Brett H Forge, Jacquie Garton-Smith, Dorothy F Graham, Ian Hamilton-Craig, Christian R Hamilton-Craig, Clare Heal, Charlotte M Hespe, Amanda J Hooper, Laurence G Howes, Jodie Ingles, Edward D Janus, Nadarajah Kangaharan, Anthony C Keech, Andrew B Kirke, Leonard Kritharides, Campbell V Kyle, Paul Lacaze, Stephen CH Li, Stjepana Maticevic, Brendan M McQuillan, Sam Mirzaee, Trevor A Mori, Allison C Morton, David M Colquhoun, Joanna C Moullin, Paul J Nestel, Kristen J Nowak, Richard C O'Brien, Nicholas Pachter, Michael M Page, Peter J Psaltis, Jan Radford, Nicola J Reid, Elizabeth N Robertson, Jacqueline DM Ryan, Mitchell N Sarkies, Carl J Schultz, Russell S Scott, Christopher Semsarian, Leon A Simons, Catherine Spinks, Andrew M Tonkin, Frank van Bockxmeer, Kathryn E Waddell-Smith, Natalie C Ward, Harvey D White, Andrew M Wilson, Ingrid Winship, Ann Marie Woodward, Stephen J Nicholls, Peter Brett, Luke Elias, Wynand Malan, John Irvin, Kirsten Lambert, and Annette Pedrotti
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Familial hypercholesterolaemia ,Guidance ,Care ,Management ,Adults ,Children ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 ,Public aspects of medicine ,RA1-1270 - Abstract
Summary: Introduction: Familial hypercholesterolaemia (FH) is a common, heritable and preventable cause of premature coronary artery disease, with significant potential for positive impact on public health and healthcare savings. New clinical practice recommendations are presented in an abridged guidance to assist practitioners in enhancing the care of all patients with FH. Main recommendations: Core recommendations are made on the detection, diagnosis, assessment and management of adults, children and adolescents with FH. There is a key role for general practitioners (GPs) working in collaboration with specialists with expertise in lipidology. Advice is given on genetic and cholesterol testing and risk notification of biological relatives undergoing cascade testing for FH; all healthcare professionals should develop skills in genomic medicine. Management is under-pinned by the precepts of risk stratification, adherence to healthy lifestyles, treatment of non-cholesterol risk factors, and appropriate use of low-density lipoprotein (LDL)-cholesterol lowering therapies, including statins, ezetimibe and proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors. Recommendations on service design are provided in the full guidance. Potential impact on care of FH: These recommendations need to be utilised using judicious clinical judgement and shared decision making with patients and families. Models of care need to be adapted to both local and regional needs and resources. In Australia new government funded schemes for genetic testing and use of PCSK9 inhibitors, as well as the National Health Genomics Policy Framework, will enable adoption of these recommendations. A broad implementation science strategy is, however, required to ensure that the guidance translates into benefit for all families with FH.
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- 2021
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31. The Gut Microbiome and Abiotic Factors as Potential Determinants of Postprandial Glucose Responses: A Single-Arm Meal Study
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Nathalie Nestel, Josephine D. Hvass, Martin I. Bahl, Lars H. Hansen, Lukasz Krych, Dennis S. Nielsen, Lars Ove Dragsted, and Henrik M. Roager
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gut microbiome ,personalized nutrition ,individuality ,intestinal transit time ,abiotic factors ,colonic fermentation ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The gut microbiome has combined with other person-specific information, such as blood parameters, dietary habits, anthropometrics, and physical activity been found to predict personalized postprandial glucose responses (PPGRs) to various foods. Yet, the contributions of specific microbiome taxa, measures of fermentation, and abiotic factors in the colon to glycemic control remain elusive. We tested whether PPGRs 60 min after a standardized breakfast was associated with gut microbial α-diversity (primary outcome) and explored whether postprandial responses of glucose and insulin were associated with specific microbiome taxa, colonic fermentation as reflected by fecal short-chain fatty acids (SCFAs), and breath hydrogen and methane exhalation, as well as abiotic factors including fecal pH, fecal water content, fecal energy density, intestinal transit time (ITT), and stool consistency. A single-arm meal trial was conducted. A total of 31 healthy (24 female and seven male) subjects consumed a standardized evening meal and a subsequent standardized breakfast (1,499 kJ) where blood was collected for analysis of postprandial glucose and insulin responses. PPGRs to the same breakfast varied across the healthy subjects. The largest inter-individual variability in PPGRs was observed 60 min after the meal but was not associated with gut microbial α-diversity. In addition, no significant associations were observed between postprandial responses and specific taxa of the gut microbiome, measures of colonic fermentation, ITT, or other abiotic factors. However, fasting glucose concentrations were negatively associated with ITT, and fasting insulin was positively associated with fasting breath hydrogen. In conclusion, the gut microbiome, measures of colonic fermentation, and abiotic factors were not shown to be significantly associated with variability in postprandial responses, suggesting that contributions of the gut microbiome, colonic fermentation, and abiotic factors to PPGRs may be subtle in healthy adults.
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- 2021
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32. Shark liver oil supplementation enriches endogenous plasmalogens and reduces markers of dyslipidemia and inflammation
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Sudip Paul, Adam Alexander T. Smith, Kevin Culham, Kevin A. Gunawan, Jacqueline M. Weir, Michelle A. Cinel, Kaushala S. Jayawardana, Natalie A. Mellett, Man K.S. Lee, Andrew J. Murphy, Graeme I. Lancaster, Paul J. Nestel, Bronwyn A. Kingwell, and Peter J. Meikle
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diet and dietary lipids ,plasmalogens ,lipidomics ,lipid metabolism ,inflammation ,metabolic disease ,Biochemistry ,QD415-436 - Abstract
Plasmalogens are membrane glycerophospholipids with diverse biological functions. Reduced plasmalogen levels have been observed in metabolic diseases; hence, increasing their levels might be beneficial in ameliorating these conditions. Shark liver oil (SLO) is a rich source of alkylglycerols that can be metabolized into plasmalogens. This study was designed to evaluate the impact of SLO supplementation on endogenous plasmalogen levels in individuals with features of metabolic disease. In this randomized, double-blind, placebo-controlled cross-over study, the participants (10 overweight or obese males) received 4-g Alkyrol® (purified SLO) or placebo (methylcellulose) per day for 3 weeks followed by a 3-week washout phase and were then crossed over to 3 weeks of the alternate placebo/Alkyrol® treatment. SLO supplementation led to significant changes in plasma and circulatory white blood cell lipidomes, notably increased levels of plasmalogens and other ether lipids. In addition, SLO supplementation significantly decreased the plasma levels of total free cholesterol, triglycerides, and C-reactive protein. These findings suggest that SLO supplementation can enrich plasma and cellular plasmalogens and this enrichment may provide protection against obesity-related dyslipidemia and inflammation.
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- 2021
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33. Surgical Education and Training in an Outer Metropolitan Hospital: A Qualitative Study of Surgical Trainers and Trainees
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Nestel, Debra, Harlim, Jennifer, Bryant, Melanie, Rampersad, Rajay, Hunter-Smith, David, and Spychal, Bob
- Abstract
The landscape of surgical training is changing. The anticipated increase in the numbers of surgical trainees and the shift to competency-based surgical training places pressures on an already stretched health service. With these pressures in mind, we explored trainers' and trainees' experiences of surgical training in a less traditional rotation, an outer metropolitan hospital. We considered practice-based learning theories to make meaning of surgical training in this setting, in particular Actor-network theory. We adopted a qualitative approach and purposively sampled surgical trainers and trainees to participate in individual interviews and focus groups respectively. Transcripts were made and thematically analysed. Institutional human research ethics approval was obtained. Four surgical trainers and fourteen trainees participated. Almost without exception, participants' report training needs to be well met. Emergent inter-related themes were: learning as social activity; learning and programmatic factors; learning and physical infrastructure; and, learning and organizational structure. This outer metropolitan hospital is suited to the provision of surgical training with the current rotational system for trainees. The setting offers experiences that enable consolidation of learning providing a rich and varied overall surgical training program. Although relational elements of learning were paramount they occurred within a complex environment. Actor-network theory was used to give meaning to emergent themes acknowledging that "actors" (both people and objects) and their interactions combine to influence training quality, shifting the focus of responsibility for learning away from individuals to the complex interactions in which they work and learn.
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- 2017
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34. The World-Creating COVID-19 Protest in Tel Aviv
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Anthony Nestel
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COVID-19 ,pandemic ,Social Sciences - Abstract
Author(s): Anthony Nestel Title (English): The World-Creating COVID-19 Protest in Tel Aviv Journal Reference: Identities: Journal for Politics, Gender and Culture Publisher: Institute of Social Sciences and Humanities - Skopje Page Range: 158-161 Page Count: 4 Citation (English): Anthony Nestel, “The World-Creating COVID-19 Protest in Tel Aviv,” Identities: Journal for Politics, Gender and Culture, Vol. 17, No. 1 (Summer 2020): 158-161.
- Published
- 2020
35. Dietary patterns, dietary nutrients and cardiovascular disease
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Paul J. Nestel and Trevor A. Mori
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dietary patterns ,dietary recommendations ,cardiovascular risk ,type 2 diabetes ,plant based foods ,dietary fats ,carbohydrates ,fibre and sugar ,dairy foods ,meat consumption ,salt intake ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
A healthy dietary pattern can benefit multiple cardiovascular disease (CVD) risk factors. In conjunction with current standard-of-care pharmaceutical interventions it can provide an effective strategy for the prevention of CVD. Previous dietary recommendations have focused on targeting macronutrients. However, most of the recent international dietary guidelines now recommend a whole food, dietary pattern approach, whilst avoiding quantitative nutrient advice. The guidelines recommend: (1) increased intake of plant-based foods including complex, fibre-rich carbohydrates such as wholegrains, fruits and vegetables, but restricting the intake of refined starches; (2) substituting saturated fats with polyunsaturated and monounsaturated oils; (3) reducing salt intake; (4) increased fish consumption (or fish oils where applicable); (5) reducing sugar-sweetened drinks and added sugars; (6) avoiding butter and cream particularly in individuals at increased risk of CVD, but encouraging fermented products such as yoghurt; there is no specific advice on cheese and milk; (7) allowing consumption of lean meat in moderation but restricting processed meats; and (8) reducing cholesterol intake and foods rich in cholesterol (e.g., eggs and crustaceans) for those with diabetes and at increased CVD risk. The dietary guidelines should be adhered to in conjunction with low-to-moderate alcohol consumption, regular physical activity, avoiding tobacco and maintaining a healthy weight. This review summarises recently published research, international guidelines and position statements for minimizing CVD risk.
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- 2022
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36. A reappraisal of the impact of dairy foods and milk fat on cardiovascular disease risk
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German, J Bruce, Gibson, Robert A, Krauss, Ronald M, Nestel, Paul, Lamarche, Benoît, van Staveren, Wija A, Steijns, Jan M, de Groot, Lisette CPGM, Lock, Adam L, and Destaillats, Frédéric
- Subjects
Public Health ,Biomedical and Clinical Sciences ,Nutrition and Dietetics ,Health Sciences ,Heart Disease ,Prevention ,Cardiovascular ,Nutrition ,Obesity ,Aging ,Heart Disease - Coronary Heart Disease ,Prevention of disease and conditions ,and promotion of well-being ,3.3 Nutrition and chemoprevention ,Metabolic and endocrine ,Stroke ,Oral and gastrointestinal ,Good Health and Well Being ,Cardiovascular Diseases ,Dairy Products ,Dietary Fats ,Feeding Behavior ,Humans ,Lipids ,Micronutrients ,Nutritional Requirements ,Risk Factors ,Milk fat ,Cardiovascular disease risk ,Saturated fatty acid ,Nutrition & Dietetics ,Nutrition and dietetics ,Epidemiology - Abstract
BackgroundThis review provides a reappraisal of the potential effects of dairy foods, including dairy fats, on cardiovascular disease (CVD)/coronary heart disease (CHD) risk. Commodities and foods containing saturated fats are of particular focus as current public dietary recommendations are directed toward reducing the intake of saturated fats as a means to improve the overall health of the population. A conference of scientists from different perspectives of dietary fat and health was convened in order to consider the scientific basis for these recommendations.AimsThis review and summary of the conference focus on four key areas related to the biology of dairy foods and fats and their potential impact on human health: (a) the effect of dairy foods on CVD in prospective cohort studies; (b) the impact of dairy fat on plasma lipid risk factors for CVD; (c) the effects of dairy fat on non-lipid risk factors for CVD; and (d) the role of dairy products as essential contributors of micronutrients in reference food patterns for the elderly.ConclusionsDespite the contribution of dairy products to the saturated fatty acid composition of the diet, and given the diversity of dairy foods of widely differing composition, there is no clear evidence that dairy food consumption is consistently associated with a higher risk of CVD. Thus, recommendations to reduce dairy food consumption irrespective of the nature of the dairy product should be made with caution.
- Published
- 2009
37. Physiotherapy students can be educated to portray realistic patient roles in simulation: a pragmatic observational study
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Pritchard, Shane A., Keating, Jennifer L., Nestel, Debra, and Blackstock, Felicity C.
- Published
- 2020
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38. Beliefs and Values about Intra-Operative Teaching and Learning: A Case Study of Surgical Teachers and Trainees
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Ong, Caroline C., Dodds, Agnes, and Nestel, Debra
- Abstract
Surgeons require advanced psychomotor skills, critical decision-making and teamwork skills. Much of surgical skills training involve progressive trainee participation in supervised operations where case variability, operating team interaction and environment affect learning, while surgical teachers face the key challenge of ensuring patient safety. Using a theoretical framework of "situated learning" including "cognitive apprenticeship," we explored teachers' and trainees' beliefs and values about intra-operative training and reasons for any differences. A qualitative case study method was used where five teacher-trainee pairs participating in an observed teaching operation were separately interviewed about the same operation. Thematic analysis of transcribed interviews and observations was performed with iterative refinement and a reflexive approach was adopted throughout the study. We found that in all cases, teachers and trainees had shared recognition of learning about technical skills whereas they differed in three cases regarding non-technical skills such as surgical reasoning and team management. Factors contributing to teacher and trainee satisfaction with the process were successful trainee completion of operation without need for surgeon take-over, a positive learning environment and learning new things. Teaching--learning behaviours observed and discussed were modeling, coaching and scaffolding, while exploration, reflection and articulation were less common. Our study reveals differing teacher and trainee perspectives of some aspects of intra-operative training and surfaces new reasons other than amount of feedback and autonomy given. Factors contributing to different perspectives include teacher and trainee abilities, values and situational influences. Targeted teaching--learning strategies could enhance intra-operative learning.
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- 2016
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39. Ad Hoc Supervision of General Practice Registrars as a 'Community of Practice': Analysis, Interpretation and Re-Presentation
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Clement, T., Brown, J., Morrison, J., and Nestel, D.
- Abstract
General practice registrars in Australia undertake most of their vocational training in accredited general practices. They typically see patients alone from the start of their community-based training and are expected to seek timely ad hoc support from their supervisor. Such ad hoc encounters are a mechanism for ensuring patient safety, but also provide an opportunity for learning and teaching. Wenger's (Communities of practice: learning, meaning, and identity. Cambridge University Press, New York, 1998) social theory of learning ("communities of practice") guided a secondary analysis of audio-recordings of ad hoc encounters. Data from one encounter is re-presented as an extended sequence to maintain congruence with the theoretical perspective and enhance vicariousness. An interpretive commentary communicates key features of Wenger's theory and highlights the researchers' interpretations. We argue that one encounter can reveal universal understandings of clinical supervision and that the process of naturalistic generalisation allows readers to transfer others' experiences to their own contexts. The paper raises significant analytic, interpretive, and representational issues. We highlight that report writing is an important, but infrequently discussed, part of research design. We discuss the challenges of supporting the learning and teaching that arises from adopting a socio-cultural lens and argue that such a perspective importantly captures the complex range of issues that work-based practitioners have to grapple with. This offers a challenge to how we research and seek to influence work-based learning and teaching in health care settings.
- Published
- 2016
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40. Lipoprotein(a) Removal Still a Mystery
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Paul Nestel
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Editorials ,antisense silencing of LPA gene ,cardiovascular risk ,LDL receptor ,lipoprotein(a) ,proprotein convertase stabilisin/kexin type 9 inhibitor ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
See Article by Shapiro et al
- Published
- 2019
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41. HIV disease, metabolic dysfunction and atherosclerosis: A three year prospective study.
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Hann Low, Anh Hoang, Tatiana Pushkarsky, Larisa Dubrovsky, Elizabeth Dewar, Maria-Silvana Di Yacovo, Nigora Mukhamedova, Lesley Cheng, Catherine Downs, Gary Simon, Maria Saumoy, Andrew F Hill, Michael L Fitzgerald, Paul Nestel, Anthony Dart, Jennifer Hoy, Michael Bukrinsky, and Dmitri Sviridov
- Subjects
Medicine ,Science - Abstract
HIV infection is known to be associated with cardiometabolic abnormalities; here we investigated the progression and causes of these abnormalities. Three groups of participants were recruited: HIV-negative subjects and two groups of treatment-naïve HIV-positive subjects, one group initiating antiretroviral treatment, the other remaining untreated. Intima-media thickness (cIMT) increased in HIV-positive untreated group compared to HIV-negative group, but treatment mitigated the difference. We found no increase in diabetes-related metabolic markers or in the level of inflammation in any of the groups. Total cholesterol, low density lipoprotein cholesterol and apoB levels were lower in HIV-positive groups, while triglyceride and Lp(a) levels did not differ between the groups. We found a statistically significant negative association between viral load and plasma levels of total cholesterol, LDL cholesterol, HDL cholesterol, apoA-I and apoB. HIV-positive patients had hypoalphalipoproteinemia at baseline, and we found a redistribution of sub-populations of high density lipoprotein (HDL) particles with increased proportion of smaller HDL in HIV-positive untreated patients, which may result from increased levels of plasma cholesteryl ester transfer protein in this group. HDL functionality declined in the HIV-negative and HIV-positive untreated groups, but not in HIV-positive treated group. We also found differences between HIV-positive and negative groups in plasma abundance of several microRNAs involved in lipid metabolism. Our data support a hypothesis that cardiometabolic abnormalities in HIV infection are caused by HIV and that antiretroviral treatment itself does not influence key cardiometabolic parameters, but mitigates those affected by HIV.
- Published
- 2019
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42. A screen-based simulation training program to improve palliative care of people with advanced dementia living in residential aged care facilities and reduce hospital transfers: study protocol for the IMproving Palliative care Education and Training Using Simulation in Dementia (IMPETUS-D) cluster randomised controlled trial
- Author
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Tropea, Joanne, Johnson, Christina E., Nestel, Debra, Paul, Sanjoy K., Brand, Caroline A., Hutchinson, Anastasia F., Bicknell, Ross, and Lim, Wen Kwang
- Published
- 2019
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43. Words matter: towards a new lexicon for ‘nontechnical skills’ training
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Murphy, Paul, Nestel, Debra, and Gormley, Gerard J.
- Published
- 2019
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44. Exploring undergraduate nursing student interactions with virtual patients to develop ‘non-technical skills’ through case study methodology
- Author
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Peddle, Monica, Bearman, Margaret, Mckenna, Lisa, and Nestel, Debra
- Published
- 2019
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45. Dietary Fat and Blood Pressure
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Nestel, Paul J.
- Published
- 2019
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46. Effects of anacetrapib on plasma lipids in specific patient subgroups in the DEFINE (Determining the Efficacy and Tolerability of CETP INhibition with AnacEtrapib) trial
- Author
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Gerstman, M., Howes, L., Kostner, K., Nestel, P., Sullivan, D., Brath, H., Patsch, J., Paulweber, B., Toplak, H., Constance, C.M., Howlett, E., Mymin, D., Pliamm, L., Saunders, K.K., Tardif, J.-C., Tytus, R., Aschner, P., Keinänen-Klukaanniemi, S., Strandberg, T., Taskinen, M.-R., Luc, G., Richter, D., Schlienger, J.L., Zaïr, Y., Appel, K.-F., Baar, M., Luley, C., Overhoff, U., Pomykaj, T., Schaefer, T., Lau, S.T., Lee, K.L.F., Tan, K., Tomlinson, B., Tsang, M.W., Badacsonyi, K., Kalina, Á., Kanakaridisz, N., Márk, L., Péterfai, É., Regos, L., Reiber, I., Takács, J., Vértes, A., Elis, A., Gavish, D., Harats, D., Hussein, O., Hayek, T., Leitersdorf, E., Bin Abdul Ghapar, A.K., Chee, K.H., Ismail, S.B., Ling, K.H., Ramanathan, G.R.L., Sim, K.H., Alvarado, R., Benavides, M., Cardona, G.E., Gonzalez, G., Verdejo, J., Basart, D.C.G., Imholz, B.P.M., Jonker, J.J.C., Nierop, P.R., Posma, J.L., Twickler, Th.B., Barrington-Ward, E., Cutfield, R., Friedlander, D.H., Scott, R.S., Istad, H., Langslet, G., Skjelvan, G.K., Campodónico Hoyos, S.J., Coloma Araniya, R., Gallegos C., A., Pino Morales, C.A., Watanabe, L., Arutyunov, G.P., Blokhin, A.B., Bubnova, M.G., Marcevich, S.Y., Álvarez Sánchez, C., Álvarez-Sala Walther, L.A., Gil Extremera, B., Perez Jimenez, F., de Teresa Parreño, L., Anderberg, C.-P., Hedin, U., Hellberg, A., Höök, P., Kjellström, T., Nilsson, P., Olsson, A.G., Rosenqvist, U., Tolagen, K., Wolff, T., Baskin, A., Bays, H.E., Bernstein, R.I., Bittar, N., Brinton, E.A., Chee, L.H.K., Cottiero, R.A., D'Agostino, R.D., Davidson, M.H., Denker, P.S., Garcia, R.K., Hippert, R.K., Isakov, T., Kaster, S.R., Kerzner, B., Klein, E.J., Koren, M.J., Kutner, M.E., Liljenquist, D., Lorch, D.G., Jr., Lorraine, R., Lubin, B.C., Lunde, N.M., Majchrzak, T.J., McKenney, J.M., Mukherjee, S., Muse, D.D., Otruba, M.S., Pappas, J.E., Patrick, K., Powell, S.J., Riffer, E., Rink, L.D., Rohlf, J.L., Rosen, J.B., Rosenbilt, P.D., Roth, E.M., Rubenstein, C.J., Rubino, J., Rudolph, L.A., Schneider, A., Short, W.G., Silverfield, J.C., Suresh, D.P., Tarshis, G.A., Toth, P.D., Townsend, R.W., Wahl, T.O., Brinton, Eliot A., Kher, Uma, Shah, Sukrut, Cannon, Christopher P., Davidson, Michael, Gotto, Antonio M., Ashraf, Tanya B., McCrary Sisk, Christine, Dansky, Hayes, Mitchel, Yale, and Barter, Philip
- Published
- 2015
- Full Text
- View/download PDF
47. What should we teach the teachers? Identifying the learning priorities of clinical supervisors
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Bearman, Margaret, Tai, Joanna, Kent, Fiona, Edouard, Vicki, Nestel, Debra, and Molloy, Elizabeth
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- 2017
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48. Creating a quality improvement culture in standardized/simulated patient methodology: the role of professional societies
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Debra Nestel, Jan Roche, and Alexis Battista
- Subjects
Computer applications to medicine. Medical informatics ,R858-859.7 - Published
- 2017
- Full Text
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49. TGFβ-Signaling and FOXG1-Expression Are a Hallmark of Astrocyte Lineage Diversity in the Murine Ventral and Dorsal Forebrain
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Stefan Christopher Weise, Alejandro Villarreal, Stefanie Heidrich, Fariba Dehghanian, Christian Schachtrup, Sigrun Nestel, Jennifer Schwarz, Kathrin Thedieck, and Tanja Vogel
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lineage-tracing ,neural differentiation ,SILAC ,Tgfbr2 knockout ,astrocyte-diversity ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Heterogeneous astrocyte populations are defined by diversity in cellular environment, progenitor identity or function. Yet, little is known about the extent of the heterogeneity and how this diversity is acquired during development. To investigate the impact of TGF (transforming growth factor) β-signaling on astrocyte development in the telencephalon we deleted the TGFBR2 (transforming growth factor beta receptor 2) in early neural progenitor cells in mice using a FOXG1 (forkhead box G1)-driven CRE-recombinase. We used quantitative proteomics to characterize TGFBR2-deficient cells derived from the mouse telencephalon and identified differential protein expression of the astrocyte proteins GFAP (glial fibrillary acidic protein) and MFGE8 (milk fat globule-EGF factor 8). Biochemical and histological investigations revealed distinct populations of astrocytes in the dorsal and ventral telencephalon marked by GFAP or MFGE8 protein expression. The two subtypes differed in their response to TGFβ-signaling. Impaired TGFβ-signaling affected numbers of GFAP astrocytes in the ventral telencephalon. In contrast, TGFβ reduced MFGE8-expression in astrocytes deriving from both regions. Additionally, lineage tracing revealed that both GFAP and MFGE8 astrocyte subtypes derived partly from FOXG1-expressing neural precursor cells.
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- 2018
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50. Position- and Time-Dependent Arc Expression Links Neuronal Activity to Synaptic Plasticity During Epileptogenesis
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Philipp Janz, Pascal Hauser, Katharina Heining, Sigrun Nestel, Matthias Kirsch, Ulrich Egert, and Carola A. Haas
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hippocampus ,epilepsy ,seizure ,kainate ,Arg3.1 ,spine ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
In mesial temporal lobe epilepsy (mTLE) an initial precipitating injury can trigger aberrant wiring of neuronal circuits causing seizure activity. While circuit reorganization is known to be largely activity-dependent, the interactions between neuronal activity and synaptic plasticity during the development of mTLE remain poorly understood. Therefore, the present study aimed at delineating the spatiotemporal relationship between epileptic activity, activity-dependent gene expression and synaptic plasticity during kainic acid-induced epileptogenesis in mice. We show that during epileptogenesis the sclerotic hippocampus differed from non-sclerotic regions by displaying a consistently lower power of paroxysmal discharges. However, the power of these discharges steadily increased during epileptogenesis. This increase was paralleled by the upregulation of the activity-related cytoskeleton protein (Arc) gene expression in dentate granule cells (DGCs) of the sclerotic hippocampus. Importantly, we found that Arc mRNA-upregulating DGCs exhibited increased spine densities and spine sizes, but at the same time decreased AMPA-type glutamate receptor (AMPAR) densities. Finally, we show that in vivo optogenetic stimulation of DGC synapses evoked robust seizure activity in epileptic mice, but failed to induce dendritic translocation of Arc mRNA as under healthy conditions, supporting the theory of a breakdown of the dentate gate in mTLE. We conclude that during epileptogenesis epileptic activity emerges early and persists in the whole hippocampus, however, only the sclerotic part shows modulation of discharge amplitudes accompanied by plasticity of DGCs. In this context, we identified Arc as a putative mediator between seizure activity and synaptic plasticity.
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- 2018
- Full Text
- View/download PDF
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