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Spooner M, Reinhardt C, Boland F, McConkey S, Pawlikowska T. Risky business: medical students' feedback-seeking behaviours: a mixed methods study. Med Educ Online 2024; 29:2330259. [PMID: 38529848 DOI: 10.1080/10872981.2024.2330259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 03/08/2024] [Indexed: 03/27/2024]
Abstract
There are differing views on how learners' feedback-seeking behaviours (FSB) develop during training. With globalisation has come medical student migration and programme internationalisation. Western-derived educational practices may prove challenging for diverse learner populations. Exploring undergraduate activity using a model of FSB may give insight into how FSB evolves and the influence of situational factors, such as nationality and site of study. Our findings seek to inform medical school processes that support feedback literacy. Using a mixed methods approach, we collected questionnaire and interview data from final-year medical students in Ireland, Bahrain, and Malaysia. A validated questionnaire investigated relationships with FSB and goal orientation, leadership style preference, and perceived costs and benefits. Interviews with the same student population explored their FSB experiences in clinical practice, qualitatively, enriching this data. The data were integrated using the 'following the thread' technique. Three hundred and twenty-five of a total of 514 completed questionnaires and 57 interviews were analysed. Learning goal orientation (LGO), instrumental leadership and supportive leadership related positively to perceived feedback benefits (0.23, 0.2, and 0.31, respectively, p < 0.05). Perceived feedback benefits are related positively to feedback monitoring and inquiry (0.13 and 0.38, respectively, p < 0.05). The personal cost of feedback is unsupported in quantitative data, but was a strong theme in interviews, as was feedback avoidance, peer feedback, and unsupportive learning environment. No differences were observed across sub-groups based on gender, study site, or student nationality. Integrated analysis describes FSB: avoiding 'unsafe' feedback (first, do no harm) and overcoming barriers (beat the system) and goal-centred curation (shop around) to optimise benefits. Diverse medical students across three continents undertake FSB with careful navigation, as a valued but risky business, that is highly contextualised. Promoting a constructive FSB is complex. Overcoming outdated theory and practices on the wards remains a challenge to psychologically safe, learner-centred feedback.
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Affiliation(s)
- Muirne Spooner
- Health Professions Education Centre, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - Ciarán Reinhardt
- Department of Medicine, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - Fiona Boland
- Data Science Centre, School of Population Health, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - Samuel McConkey
- Department of International Health and Tropical Medicine, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - Teresa Pawlikowska
- Health Professions Education Centre, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
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Bhattacharjee R, Reynolds A, Zhan L, Knittig L, Nagaraj R, Zhao Y. Developing a framework for promoting interest and engagement of scholarship of teaching and learning for medical students. Med Educ Online 2024; 29:2336332. [PMID: 38560892 PMCID: PMC10986435 DOI: 10.1080/10872981.2024.2336332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 03/25/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND The scholarship of teaching and learning (SoTL) is a field of academic research that focuses on improving learning through reflective and informed teaching. Currently, most SoTL-related work is faculty-driven; however, student involvement in SoTL has been shown to benefit both learners and educators. Our study aims to develop a framework for increasing medical students' interest, confidence, and engagement in SoTL. METHODS A student-led SoTL interest group was developed and a year-round program of SoTL was designed and delivered by student leaders of the group under the guidance of a faculty advisor. Individual post-session surveys were administered to evaluate participants' perceptions of each session. Pre- and post-program surveys were administered to evaluate the program impact. RESULTS The year-round SoTL program consistently attracted the participation of medical students and faculty. Survey responses indicated strong medical student interest in the program and positive impact of the program. Increased interest and confidence in medical education research were reported by the student participants. The program design provided opportunities for student participants to network and receive ongoing feedback about medical education research they were interested or involved in. CONCLUSION Our study provides insights for developing a framework that other institutions can reference and build upon to educate and engage students in SoTL.
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Affiliation(s)
| | - Austin Reynolds
- College of Osteopathic Medicine, Sam Houston State University, Conroe, USA
| | - Lilian Zhan
- College of Osteopathic Medicine, Sam Houston State University, Conroe, USA
| | - Laura Knittig
- College of Osteopathic Medicine, Sam Houston State University, Conroe, USA
| | - Ranjini Nagaraj
- College of Osteopathic Medicine, Sam Houston State University, Conroe, USA
| | - Yuan Zhao
- College of Osteopathic Medicine, Sam Houston State University, Conroe, USA
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Xu R, Huang F, Liu Q, Lv Y, Hu L, Zhang Q. USP25 attenuates anti-GBM nephritis in mice by negative feedback regulation of Th17 cell differentiation. Ren Fail 2024; 46:2338932. [PMID: 38616174 PMCID: PMC11018034 DOI: 10.1080/0886022x.2024.2338932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/30/2024] [Indexed: 04/16/2024] Open
Abstract
PURPOSE This study aimed to elucidate the role of USP25 in a mouse model of anti-glomerular basement membrane glomerulonephritis (anti-GBM GN). METHODS USP25-deficient anti-GBM GN mice were generated, and their nephritis progression was monitored. Naïve CD4+ T cells were isolated from spleen lymphocytes and stimulated to differentiate into Th1, Th2, and Th17 cells. This approach was used to investigate the impact of USP25 on CD4+ T lymphocyte differentiation in vitro. Furthermore, changes in USP25 expression were monitored during Th17 differentiation, both in vivo and in vitro. RESULTS USP25-/- mice with anti-GBM GN exhibited accelerated renal function deterioration, increased infiltration of Th1 and Th17 cells, and elevated RORγt transcription. In vitro experiments demonstrated that USP25-/- CD4+ T lymphocytes had a higher proportion for Th17 cell differentiation and exhibited higher RORγt levels upon stimulation. Wild-type mice with anti-GBM GN showed higher USP25 levels compared to healthy mice, and a positive correlation was observed between USP25 levels and Th17 cell counts. Similar trends were observed in vitro. CONCLUSION USP25 plays a crucial role in mitigating renal histopathological and functional damage during anti-GBM GN in mice. This protective effect is primarily attributed to USP25's ability to inhibit the differentiation of naïve CD4+ T cells into Th17 cells. The underlying mechanism may involve the downregulation of RORγt. Additionally, during increased inflammatory responses or Th17 cell differentiation, USP25 expression is activated, forming a negative feedback regulatory loop that attenuates immune activation.
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Affiliation(s)
- Ranran Xu
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Fei Huang
- Department of General Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Qingquan Liu
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Yongman Lv
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
- Health Management Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Liu Hu
- Health Management Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Qian Zhang
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
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Wang Y, Lian H, Li J, Zhao M, Hao Z, Zheng X, Zhao L, Cui J. The HIF-1α/PKM2 Feedback Loop in Relation to EGFR Mutational Status in Lung Adenocarcinoma. J INVEST SURG 2024; 37:2301081. [PMID: 38224012 DOI: 10.1080/08941939.2023.2301081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 12/27/2023] [Indexed: 01/16/2024]
Abstract
OBJECTIVE Gene mutations in tumor cells can lead to several unique metabolic phenotypes, which are crucial for the proliferation of cancer cells. EGFR mutation (EGFR-mt) is the main oncogenic driving mutation in lung adenocarcinoma (LUAD). HIF-1 α and PKM2 are two key metabolic regulatory proteins that can form a feedback loop and promote cancer growth by promoting glycolysis. Here, the linkage between EGFR mutational status and HIF-1α/PKM2 feedback loop in LUAD were evaluated. METHODS Retrospective study were performed on LUAD patients (n = 89) undergoing first-time therapeutic surgical resection. EGFR mutation was analyzed by real-time PCR. Immunohistochemistry was used to measure the expressions of HIF-1α and PKM2. RESULTS We found that the protein expressions of HIF-1α and PKM2 were significantly higher in LUAD than normal lung tissues. In adenocarcinomas, the two protein expressions were both correlated with worse pTNM stage. Moreover, the correlation between the proteins of HIF-1α/PKM2 feedback loop and the EGFR mutational status were also analyzed. We found that EGFR-mt tumors showed higher HIF-1α and PKM2 proteins compared to tumors with EGFR wild-type. Meanwhile, HIF-1α expression was significantly correlated with higher pTNM stage, and PKM2 showed a similar trend, only in EGFR-mutated tumors. The expression of HIF-1α was positively correlated with PKM2 in LUAD, furthermore, this correlation was mainly in patients with EGFR-mt. CONCLUSION Different expression and clinical features of HIF-1α/PKM2 feedback loop was existed between LUAD and normal lung tissues, especially in EGFR mutational tumors, supporting the relationship between EGFR mutation and the key related proteins of aerobic glycolysis (HIF-1α and PKM2) in lung adenocarcinomas.
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Affiliation(s)
- Yuan Wang
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Hongguang Lian
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Jiajun Li
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China
| | - Man Zhao
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Zengfang Hao
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Xue Zheng
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Linyuan Zhao
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
| | - Jinfeng Cui
- Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China
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Wan H, Yu G, He Y, Liu S, Chen X, Jiang Y, Duan H, Lin X, Liu L, Shen J. Associations of thyroid feedback quantile-based index with diabetes in euthyroid adults in the United States and China. Ann Med 2024; 56:2318418. [PMID: 38382636 PMCID: PMC10883085 DOI: 10.1080/07853890.2024.2318418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND We aimed to investigate the associations between thyroid hormone sensitivity indices and diabetes in euthyroid adults in the United States and China. METHODS 2296 euthyroid adults from the NHANES in the United States and 8319 euthyroid adults from the SPEED-Shunde in China were involved. The thyroid sensitivity indices, namely TFQIFT4 and TFQIFT3, were calculated. Multivariable logistic regression, restricted cubic spline analysis, and general ordinal logit regression were utilized. RESULTS In the NHANES, compared with participants in quartile 1st (Q1), those in Q4 of TFQIFT3 (OR 2.12, 95% CI (1.18, 3.81)) and those in Q3 of TFQIFT4 (OR 2.31, 95% CI (1.18, 4.53)) (both P for trend < 0.05) were associated with a greater prevalence of diabetes. In the SPEED-Shunde, compared with participants in Q1, those in Q4 of TFQIFT3 had a greater prevalence of diabetes (OR 1.36, 95% CI (1.11, 1.66) (P for trend < 0.05), while no significant associations between TFQIFT4 and diabetes were found. CONCLUSIONS TFQIFT3 was associated with a higher prevalence of diabetes both in the United States and China. However, TFQIFT4 was only associated with a higher prevalence of diabetes in the United States, not in China. Further prospective cohort studies are necessary to validate these findings.
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Affiliation(s)
- Heng Wan
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Genfeng Yu
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Yajun He
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
- School of Nursing, Southern Medical University, Guangzhou, Guangdong, China
| | - Siyang Liu
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Xingying Chen
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Yuqi Jiang
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Hualin Duan
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Xu Lin
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Lan Liu
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
| | - Jie Shen
- Department of Endocrinology and Metabolism, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, Guangdong, China
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Baumann V, Achleitner S, Tulli S, Schuschnig M, Klune L, Martens S. Faa1 membrane binding drives positive feedback in autophagosome biogenesis via fatty acid activation. J Cell Biol 2024; 223:e202309057. [PMID: 38573225 PMCID: PMC10993510 DOI: 10.1083/jcb.202309057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 02/14/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024] Open
Abstract
Autophagy serves as a stress response pathway by mediating the degradation of cellular material within lysosomes. In autophagy, this material is encapsulated in double-membrane vesicles termed autophagosomes, which form from precursors referred to as phagophores. Phagophores grow by lipid influx from the endoplasmic reticulum into Atg9-positive compartments and local lipid synthesis provides lipids for their expansion. How phagophore nucleation and expansion are coordinated with lipid synthesis is unclear. Here, we show that Faa1, an enzyme activating fatty acids, is recruited to Atg9 vesicles by directly binding to negatively charged membranes with a preference for phosphoinositides such as PI3P and PI4P. We define the membrane-binding surface of Faa1 and show that its direct interaction with the membrane is required for its recruitment to phagophores. Furthermore, the physiological localization of Faa1 is key for its efficient catalysis and promotes phagophore expansion. Our results suggest a positive feedback loop coupling phagophore nucleation and expansion to lipid synthesis.
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Affiliation(s)
- Verena Baumann
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
| | - Sonja Achleitner
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
- Vienna BioCenter PhD Program, A Doctoral School of the University of Vienna, Medical University of Vienna, Vienna, Austria
| | - Susanna Tulli
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
| | - Martina Schuschnig
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
| | - Lara Klune
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
| | - Sascha Martens
- Max Perutz Labs, Vienna BioCenter Campus (VBC), Vienna, Austria
- Max Perutz Labs, Department of Biochemistry and Cell Biology, University of Vienna, Vienna, Austria
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Li J, Xiao S, Wang X, Mu X, Zhao S, Tian J. A dual-core 3D DNA nanomachine based on DNAzyme positive feedback loop for highly sensitive MicroRNA imaging in living cells. Talanta 2024; 273:125952. [PMID: 38513474 DOI: 10.1016/j.talanta.2024.125952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/29/2024] [Accepted: 03/17/2024] [Indexed: 03/23/2024]
Abstract
A double 3D DNA walker nanomachine by DNAzyme self-driven positive feedback loop amplification for the detection of miRNA was constructed. This method uses two gold nanoparticles as the reaction core, and because of the spatial confinement effect the local concentration of the reactants increase the collision efficiency was greatly improved. Meanwhile, the introduction of positive feedback loop promotes the conversion efficiency. In presence of miRNA-21, a large amount of DNAzyme was released and hydrolyze the reporter probe, resulting the recovery of fluorescence signal. The linear range for miRNA-21 is 0.5-60 pmol/L, and the detection limit is 0.41 pmol/L (S/N = 3). This nanomachine has been successfully used for accurate detection of miRNA-21 expression levels in cell lysates. At the same time, it can enter cells for intracellular miRNA-21 fluorescence imaging, distinguishing tumor cells from normal cells. This combination of in vitro detection and imaging analysis of living cells can achieve the goal of jointly detecting cancer markers through multiple pathways, providing new ideas for early diagnosis and screening of diseases.
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Affiliation(s)
- Jinshen Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Shixiu Xiao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Xin Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Xiaomei Mu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Shulin Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Jianniao Tian
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China.
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Azher S, Mills A, He J, Hyjazie T, Tokuno J, Quaiattini A, Harley JM. Findings Favor Haptics Feedback in Virtual Simulation Surgical Education: An Updated Systematic and Scoping Review. Surg Innov 2024; 31:331-341. [PMID: 38486132 DOI: 10.1177/15533506241238263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
BACKGROUND Virtual simulations (VSs) enhance clinical competencies and skills. However, a previous systematic review of 9 RCT studies highlighted a paucity of literature on the effects of haptic feedback in surgical VSs. An updated systematic and scoping review was conducted to encompass more studies and a broader range of study methodologies. METHODS A systematic literature search was conducted on July 31, 2023, in MEDLINE, Embase, and Cochrane. English language studies comparing haptic vs non-haptic conditions and using VSs were included. Studies were evaluated and reported using PRISMA-ScR guidelines. RESULTS Out of 2782 initial studies, 51 were included in the review. Most studies used RCT (21) or crossover (23) methodologies with medical residents, students, and attending physicians. Most used post-intervention metrics, while some used pre- and post-intervention metrics. Overall, 34 performance results from studies favored haptics, 3 favored non-haptics, and the rest showed mixed or equal results. CONCLUSION This updated review highlights the diverse application of haptic technology in surgical VSs. Haptics generally enhances performance, complements traditional teaching methods, and offers personalized learning with adequate simulator validation. However, a sparsity of orienting to the simulator, pre-/post-study designs, and small sample sizes poses concerns with the validity of the results. We underscore the urgent need for standardized protocols, large-scale studies, and nuanced understanding of haptic feedback integration. We also accentuate the significance of simulator validation, personalized learning potential, and the need for researcher, educator, and manufacturer collaboration. This review is a guidepost for navigating the complexities and advancements in haptic-enhanced surgical VSs.
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Affiliation(s)
- Sayed Azher
- Department of Surgery, McGill University, Montreal, QC, Canada
- Simulation, Affect, Innovation, Learning, and Surgery (SAILS) Lab, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Aralia Mills
- Simulation, Affect, Innovation, Learning, and Surgery (SAILS) Lab, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Jinzhi He
- Simulation, Affect, Innovation, Learning, and Surgery (SAILS) Lab, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Taliah Hyjazie
- Simulation, Affect, Innovation, Learning, and Surgery (SAILS) Lab, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Junko Tokuno
- Steinberg Centre for Simulation and Interactive Learning, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Andrea Quaiattini
- Institute of Health Sciences Education, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Schulich Library of Physical Sciences, Life Sciences, and Engineering, McGill University, Montreal, QC, Canada
| | - Jason M Harley
- Department of Surgery, McGill University, Montreal, QC, Canada
- Simulation, Affect, Innovation, Learning, and Surgery (SAILS) Lab, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Steinberg Centre for Simulation and Interactive Learning, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Institute of Health Sciences Education, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
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Surapaneni KM. "Aquilibria: The battle to balance"-a narrative card and board game on acid-base regulation for first-year medical students. Adv Physiol Educ 2024; 48:171-179. [PMID: 38205518 DOI: 10.1152/advan.00220.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/20/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024]
Abstract
Recognizing the growing value of game-based learning in medical education, this study aims to evaluate the effectiveness of the innovation, "Aquilibria: The Battle to Balance," a creative narrative card and board game to help improve learners' understanding and application of the concepts of acid-base balance. In this mixed-method study, 120 first-year medical students participated. The innovation employed a card and board style integrated with a captivating story. Students were divided into small groups of six each with a facilitator. Following this, the posttest was conducted to compare the educational gain. Also, students' perceptions about the game were obtained using a 32-item questionnaire on a 5-point Likert scale. In addition to this, the confidence level among students to understand and interpret the concepts of acid-base regulation before and after the game was obtained using a 10-item questionnaire on a 5-point Likert scale. Furthermore, for qualitative data, short interviews with open-ended questions were conducted and thematic analysis was performed. The results showed a highly significant improvement in academic performance from a pretest score of 7.57 ± 1.07 (means ± SD) to 16.14 ± 1.80 in the posttest with a P value of <0.0001. There was a notable increase in confidence among learners after the game, and highly positive student feedback was received. These findings support the growing recognition of narrative game-based learning as a valuable and engaging strategy in medical education, offering a promising avenue for fostering deeper understanding and retention of complex medical concepts.NEW & NOTEWORTHY This innovation is a captivating blend of storytelling, cards, and board gameplay to facilitate the learning of acid-base regulation. This engaging game offers a wealth of questions and diverse case scenarios, allowing learners to repeatedly explore and grasp the intricacies of acid-base balance. What sets this game apart is its robust assessment strategy, supported by overwhelmingly positive feedback and marked academic improvement. This innovation is a must-have for students seeking a dynamic and effective learning experience.
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Affiliation(s)
- Krishna Mohan Surapaneni
- Department of Biochemistry, Panimalar Medical College Hospital & Research Institute, Varadharajapuram, Poonamallee, Chennai, Tamil Nadu, India
- Department of Medical Education, Panimalar Medical College Hospital & Research Institute, Varadharajapuram, Poonamallee, Chennai, Tamil Nadu, India
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Liu S, Guan C, Sha X, Gao X, Zou X, Yang C, Zhang X, Zhong X, Jiang X. Circ_0007534 promotes cholangiocarcinoma stemness and resistance to anoikis through DDX3X-mediated positive feedback regulation of parental gene DDX42. Cell Signal 2024; 118:111141. [PMID: 38492624 DOI: 10.1016/j.cellsig.2024.111141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/23/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Cholangiocarcinoma (CCA) is a malignancy with an extremely poor prognosis, and much remains unknown about its pathogenesis and treatment modalities. Circular RNA (circRNA) has been proven to play regulatory roles in various tumorigenesis, yet its potential function and mechanism in cholangiocarcinoma require further investigation. This study is the first to identify the aberrant expression and functional role of a novel circRNA, circ_0007534, derived from the DDX42 gene, in cholangiocarcinoma. Compared to the normal control group, the expression of circ_0007534 was significantly elevated in the tissues and cells with CCA and that high expression correlated with lymph node invasion and poor prognosis. Functional experiments indicated that downregulating circ_0007534 markedly inhibited the proliferation, migration, invasion, stemness, and anti-anoikis ability of CCA cells, as well as the tumor growth and liver and lung metastasis in nude mice. Mechanistic studies revealed that DDX42, as the parent gene of circ_0007534, can mutually regulate each other's expression. Predominantly located in the cytoplasm, circ_0007534 can form a complex with the RNA-binding protein DDX3X, which enhances the stability of DDX42 mRNA, thereby upregulating the expression of DDX42. This creates a positive feedback loop among the three, collectively promoting the progression of cholangiocarcinoma. In conclusion, this study sheds light on the pivotal role and molecular mechanism of circ_0007534 in the development of CCA, offering potential new targets for early diagnosis and treatment.
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Affiliation(s)
- Sidi Liu
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Canghai Guan
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Xiangjun Sha
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Xin Gao
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Xinlei Zou
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Chengru Yang
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Xinmiao Zhang
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China
| | - Xiangyu Zhong
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China.
| | - Xingming Jiang
- General Surgery Department, The 2nd Affiliated Hospital of Harbin Medical University, 148 Baojian Street, Harbin 150086, Heilongjiang Province, China.
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11
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Yan S, Teng L, Du J, Ji L, Xu P, Zhao W, Tao W. Long non‑coding RNA DANCR aggravates breast cancer through the miR‑34c/E2F1 feedback loop. Mol Med Rep 2024; 29:93. [PMID: 38577930 PMCID: PMC11025030 DOI: 10.3892/mmr.2024.13217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 03/11/2024] [Indexed: 04/06/2024] Open
Abstract
Emerging scientific evidence has suggested that the long non‑coding (lnc)RNA differentiation antagonizing non‑protein coding RNA (DANCR) serves a significant role in human tumorigenesis and cancer progression; however, the precise mechanism of its function in breast cancer remains to be fully understood. Therefore, the objective of the present study was to manipulate DANCR expression in MCF7 and MDA‑MB‑231 cells using lentiviral vectors to knock down or overexpress DANCR. This manipulation, alongside the analysis of bioinformatics data, was performed to investigate the potential mechanism underlying the role of DANCR in cancer. The mRNA and/or protein expression levels of DANCR, miR‑34c‑5p and E2F transcription factor 1 (E2F1) were assessed using reverse transcription‑quantitative PCR and western blotting, respectively. The interactions between these molecules were validated using chromatin immunoprecipitation and dual‑luciferase reporter assays. Additionally, fluorescence in situ hybridization was used to confirm the subcellular localization of DANCR. Cell proliferation, migration and invasion were determined using 5‑ethynyl‑2'‑deoxyuridine, wound healing and Transwell assays, respectively. The results of the present study demonstrated that DANCR had a regulatory role as a competing endogenous RNA and upregulated the expression of E2F1 by sequestering miR‑34c‑5p in breast cancer cells. Furthermore, E2F1 promoted DANCR transcription by binding to its promoter in breast cancer cells. Notably, the DANCR/miR‑34c‑5p/E2F1 feedback loop enhanced cell proliferation, migration and invasion in breast cancer cells. Thus, these findings suggested that targeting DANCR may potentially provide a promising future therapeutic strategy for breast cancer treatment.
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Affiliation(s)
- Shuai Yan
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lizhi Teng
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Juntong Du
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Liang Ji
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Peng Xu
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Wenxi Zhao
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Weiyang Tao
- Department of Breast Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Acoustic, Optical and Electromagnetic Diagnosis and Treatment of Cardiovascular Diseases, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- The Cell Transplantation Key Laboratory of National Health Commission, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Fu N, Zhang Z, Quan J. Feedback activation of CD73-Adenosine axis attenuates the antitumor immunity of STING pathway. Biochem Biophys Res Commun 2024; 708:149814. [PMID: 38531218 DOI: 10.1016/j.bbrc.2024.149814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/13/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
The cGAS-STING pathway, a crucial component of innate immunity, has garnered attention as a potential therapeutic target for tumor treatment, but targeting this pathway is complicated by diverse feedback mechanisms of the cGAS-STING pathway. In this study, we demonstrated that STING activation enhanced the expression of CD73 and the subsequent production of adenosine in immune cells and cancer cells. Mechanistically, the feedback activation of CD73 depended on the type I IFN/IFNAR axis induced by STING activation. Furthermore, the combination of STING agonist and anti-CD73 mAb markedly blocked tumor growth in vivo by promoting the infiltration of CD8+ T cells and reducing the accumulation of Foxp3+ regulatory T cells (Tregs) in the tumor microenvironment. Our work provides a rationale for the combination of STING agonists and CD73 inhibitors in cancer immunotherapy.
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Affiliation(s)
- Nannan Fu
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Ziang Zhang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Junmin Quan
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
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de Lange T, Møystad A, Torgersen G, Ahlqvist J, Jäghagen EL. Students' perceptions of post-exam feedback in oral radiology-A comparative study from two dental hygienist educational settings. Eur J Dent Educ 2024; 28:377-387. [PMID: 37885281 DOI: 10.1111/eje.12959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 08/15/2023] [Accepted: 09/17/2023] [Indexed: 10/28/2023]
Abstract
INTRODUCTION The aim of this study was to investigate how students perceive the benefit of participating in a teacher-organised session providing feedback on exams, termed post-exam feedback, in two dental hygienist programmes. METHODS The study was based on interviews with 22 participants, including 18 students and 4 faculty teachers. The data were approached on the basis of thematic analysis, allowing us to generate insights on how the participants reflected on their participation in the post-exam feedback sessions and how they perceived this arrangement as learners. RESULTS The findings from the study suggest that motivated students consider post-exam feedback to be beneficial in clearing up uncertainties and deepening their understanding of issues not fully understood during the exam, as well as supporting their further learning. Less motivated students mainly consider post-exam feedback to be relevant for students who do not pass the exams. CONCLUSIONS Organised in a student-centred way and with attentiveness to student learning preferences, the results suggest that post-exam feedback can be valuable for enhancing assessment and supporting student learning related to exams.
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Affiliation(s)
- Thomas de Lange
- Department of Education, University of South-Eastern Norway, Oslo, Norway
| | - Anne Møystad
- Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Gerald Torgersen
- Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Jan Ahlqvist
- Oral and Maxillofacial Radiology, Department of Odontology, Umeå University, Umeå, Sweden
| | - Eva Levring Jäghagen
- Oral and Maxillofacial Radiology, Department of Odontology, Umeå University, Umeå, Sweden
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14
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Xu Y, Li L, Yang Y, Huang C, Zou H. Catalytic hairpin assembly triggering amplified DNAzyme- feedback for sensitive detection of hepatitis C virus genotype 1b. Talanta 2024; 271:125754. [PMID: 38335846 DOI: 10.1016/j.talanta.2024.125754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Developing a simple, reliable, and sensitive hepatitis C virus (HCV) genetic sensing platform is of great significance for diagnosing diseases and selecting appropriate antiviral treatments. Herein, a tandem nucleic acid amplification strategy for sensitive detection of HCV genotype 1b (HCV-1b) was developed by stringing the catalytic hairpin assembly (CHA) and the triggered DNAzyme amplifier. The hairpin reactants were initiated by the target to produce lots of triggering double-stranded DNA sequences which can efficiently activate the subsequent blocked DNAzyme. Thereby, the continuous cleavage of substrate was realized, resulting in the fluorescence signal amplification. The DNA-based isothermal CHA-DNAzyme (CDz) sensing platform was successfully applied for sensitive detection of HCV-1b with the limit of detection (84 pM) and showed good selectivity. Moreover, the practical detection of target DNA in the complex biologic matrix indicated that the developing strategy had good potential for early HCV infection diagnosis.
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Affiliation(s)
- Yuting Xu
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China
| | - Lili Li
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China; School of Chemical Engineering, Shijiazhuang University, Shijiazhuang, Hebei, 050035, PR China
| | - Yumeng Yang
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China
| | - Chengzhi Huang
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China.
| | - Hongyan Zou
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China.
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15
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Ulrich T, Riedel M, Pruessmann KP. Servo navigators: Linear regression and feedback control for rigid-body motion correction. Magn Reson Med 2024; 91:1876-1892. [PMID: 38234052 DOI: 10.1002/mrm.29967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 11/05/2023] [Accepted: 11/24/2023] [Indexed: 01/19/2024]
Abstract
PURPOSE Navigator-based correction of rigid-body motion reconciling high precision with minimal acquisition, minimal calibration and simple, fast processing. METHODS A short orbital navigator (2.3 ms) is inserted in a three-dimensional (3D) gradient echo sequence for human head imaging. Head rotation and translation are determined by linear regression based on a complex-valued model built either from three reference navigators or in a reference-less fashion, from the first actual navigator. Optionally, the model is expanded by global phase and field offset. Run-time scan correction on this basis establishes servo control that maintains validity of the linear picture by keeping its expansion point stable in the head frame of reference. The technique is assessed in a phantom and demonstrated by motion-corrected imaging in vivo. RESULTS The proposed approach is found to establish stable motion control both with and without reference acquisition. In a phantom, it is shown to accurately detect motion mimicked by rotation of scan geometry as well as change in global B0 . It is demonstrated to converge to accurate motion estimates after perturbation well beyond the linear signal range. In vivo, servo navigation achieved motion detection with precision in the single-digit range of micrometers and millidegrees. Involuntary and intentional motion in the range of several millimeters were successfully corrected, achieving excellent image quality. CONCLUSION The combination of linear regression and feedback control enables prospective motion correction for head imaging with high precision and accuracy, short navigator readouts, fast run-time computation, and minimal demand for reference data.
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Affiliation(s)
- Thomas Ulrich
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - Malte Riedel
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - Klaas P Pruessmann
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
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16
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Li H, Chen M, Zheng T, Lei X, Lin C, Li S, Mo J, Ning Z. IFITM1 and IFITM2 inhibit the replication of senecavirus A by positive feedback with RIG-I signaling pathway. Vet Microbiol 2024; 292:110050. [PMID: 38484578 DOI: 10.1016/j.vetmic.2024.110050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/02/2024] [Accepted: 03/09/2024] [Indexed: 04/10/2024]
Abstract
The role of host factors in the replication of emerging senecavirus A (SVA) which induced porcine idiopathic vesicular disease (PIVD) distributed worldwide remains obscure. Here, interferon-induced transmembrane (IFITM) protein 1 and 2 inhibit SVA replication by positive feedback with RIG-I signaling pathway was reported. The expression levels of IFITM1 and IFITM2 increased significantly in SVA infected 3D4/21 cells. Infection experiments of cells with over and interference expression of IFITM1 and IFITM2 showed that these two proteins inhibit SVA replication by regulating the expression of interferon beta (IFN-β), IFN-stimulated gene 15 (ISG-15), interleukin 6 (IL-6), IL-8, tumor necrosis factor alpha (TNF-α), IFN regulatory factor-3 (IRF3), and IRF7. Further results showed that antiviral responses of IFITM1 and IFITM2 were achieved by activating retinoic acid-inducible gene I (RIG-I) signaling pathway which in turn enhanced the expression of IFITM1 and IFITM2. It is noteworthy that conserved domains of these two proteins also paly the similar role. These findings provide new data on the role of host factors in infection and replication of SVA and help to develop new agents against the virus.
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Affiliation(s)
- Huizi Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Ming Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Tingting Zheng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiaoling Lei
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Cunhao Lin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Shuo Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jiacong Mo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Zhangyong Ning
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China.
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Bonnett R, Robson J, Anderson K, Fix M. Coaching medical students to give quality feedback. Med Educ 2024; 58:603-604. [PMID: 38362789 DOI: 10.1111/medu.15353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
An innovative feedback training session for medical students using assessment of real feedback examples & role play of high‐frequency scenarios decreased the occurrence of unprofessional feedback.
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Verdini NP, Gelblum DY, Vertosick EA, Ostroff JS, Vickers AJ, Gomez DR, Gillespie EF. Evaluating a Physician Audit and Feedback Intervention to Increase Clinical Trial Enrollment in Radiation Oncology in a Multisite Tertiary Cancer Center: A Randomized Study. Int J Radiat Oncol Biol Phys 2024; 119:11-16. [PMID: 37769853 DOI: 10.1016/j.ijrobp.2023.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 10/03/2023]
Abstract
PURPOSE Clinical trial participation continues to be low, slowing new cancer therapy development. Few strategies have been prospectively tested to address barriers to enrollment. We investigated the effectiveness of a physician audit and feedback report to improve clinical trial enrollment. METHODS AND MATERIALS We conducted a randomized quality improvement study among radiation oncologists at a multisite tertiary cancer network. Physicians in the intervention group received quarterly audit and feedback reports comparing the physician's trial enrollments with those of their peers. The primary outcome was trial enrollments. RESULTS Among physicians randomized to receive the feedback report (n = 30), the median proportion of patients enrolled during the study period increased to 6.1% (IQR, 2.6%-9.3%) from 3.2% (IQR, 1.1%-10%) at baseline. Among those not receiving the feedback report (n = 29), the median proportion of patients enrolled increased to 4.1% (IQR, 1.3%-7.6%) from 1.6% (IQR, 0%-4.1%) at baseline. There was a nonsignificant change in the proportion of enrollments associated with receiving the feedback report (-0.6%; 95% CI, -3.0% to 1.8%; P = .6). Notably, there was an interaction between baseline trial accrual and receipt of feedback reports (P = .005), with enrollment declining among high accruers. There was an increase in enrollment throughout the study, regardless of study group (P = .001). CONCLUSIONS In this study, a positive effect of physician audit and feedback on clinical trial enrollment was not observed. Future efforts should avoid disincentivizing high accruers and might consider pairing feedback with other patient- or physician-level strategies. The increase in trial enrollment in both groups over time highlights the importance of including a comparison group in quality improvement studies to reduce confounding from secular trends.
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Affiliation(s)
- Nicholas P Verdini
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Daphna Y Gelblum
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Emily A Vertosick
- Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Jamie S Ostroff
- Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Andrew J Vickers
- Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Daniel R Gomez
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Erin F Gillespie
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Radiation Oncology, University of Washington, Seattle, Washington.
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Steinhagen E, Khan SZ, Ofshteyn A, Terhune K, Selby L, Miller-Ocuin J, Stein SL, Ammori JB. Creation and Implementation of an Online Tool for Feedback on Resident Teaching: A Pilot Study. J Surg Educ 2024; 81:713-721. [PMID: 38580499 DOI: 10.1016/j.jsurg.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/11/2023] [Accepted: 01/16/2024] [Indexed: 04/07/2024]
Abstract
OBJECTIVE There are few assessments of the competence and growth of surgical residents as educators. We developed and piloted an observation-based feedback tool (FT) to provide residents direct feedback during a specific teaching session, as perceived by medical students (MS). We hypothesized that residents' performance would improve with frequent, low stakes, observation-based feedback. SETTING This prospective study took place at an academic general surgery program. PARTICIPANTS Focus groups of MS, surgical residents, and faculty informed FT development. MS completed the FT regarding resident teaching. DESIGN The FT utilized 5 slider-bar ratings (0 to 100) about the teaching encounter and a checklist of 16 desirable teaching behaviors. QR codes and weekly email links were distributed for 12 months (6 clerkship blocks) to promote use. Residents were sent their results after each block. A survey after each block assessed motivation for use and gathered feedback on the FT. Descriptive statistics were used for analysis (medians, IQRs). Primary measures of performance were median of the slider-bar scores and the number of teaching behaviors. RESULTS The FT was used 111 times; 37 of 46 residents were rated by up to 65 MS. The median rating on the slider-bars was 100 and the median number of desirable teaching behaviors was 12; there were no differences based on gender or PGY level. 10 residents had 5 or more FT observations during the year. Four residents had evaluations completed in 4 or more blocks and 19 residents had evaluations completed in at least 2 blocks. Over time, 13 residents had consistent slider-bar scores, 1 resident had higher scores, and 5 residents had lower scores (defined as a more than 5-point change from initial rating). Frequency of use of the FT decreased over time (38, 32, 9, 21, 7, 5 uses per block). The post-use survey was completed by 24 MS and 19 residents. Most common reasons for usage were interest in improving surgical learning environment, giving positive feedback (MS), and improving teaching skills (residents). Most common reasons for lack of usage from residents were "I did not think I taught enough to ask for feedback," "I forgot it existed," and "I did not know it existed." CONCLUSIONS The FT did not lead to any meaningful improvement in resident scores over the course of the year. This may be due to overall high scores, suggesting that the components of the FT may require reevaluation. Additionally, decreased utilization of the instrument over time made it challenging to assess change in performance of specific residents, likely due to lack of awareness of the FT despite frequent reminders. Successful implementation of observation-based teaching assessments may require better integration with residency or clerkship objectives.
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Affiliation(s)
- Emily Steinhagen
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH; University Hospitals Research in Surgical Outcomes & Effectiveness Center (UH-RISES).
| | - Saher-Zahra Khan
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH; University Hospitals Research in Surgical Outcomes & Effectiveness Center (UH-RISES)
| | - Asya Ofshteyn
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH; University Hospitals Research in Surgical Outcomes & Effectiveness Center (UH-RISES)
| | - Kyla Terhune
- Vanderbilt University Medical Center, Nashville, Tennessee
| | - Luke Selby
- University of Kansas Medical Center, Department of Surgery, Kansas City, Kansas
| | | | - Sharon L Stein
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH; University Hospitals Research in Surgical Outcomes & Effectiveness Center (UH-RISES)
| | - John B Ammori
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH
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20
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Merrick M, Fyfe ER. Right or wrong? How feedback content and source influence children's mathematics performance and persistence. J Exp Child Psychol 2024; 241:105865. [PMID: 38320356 PMCID: PMC10923023 DOI: 10.1016/j.jecp.2024.105865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 01/06/2024] [Accepted: 01/08/2024] [Indexed: 02/08/2024]
Abstract
The current study examined how different features of corrective feedback influenced children's performance and motivational outcomes on a mathematics task. Elementary school-aged children from the United States (N = 130; Mage = 7.61 years; 35% female; 60% White) participated in a Zoom session with a trained researcher. During the learning activity, children solved a series of mathematical equivalence problems and were assigned to different feedback conditions that varied in feedback content (correct answer alone vs. correct answer with verification) and feedback source (computer alone vs. computer with person). In terms of content, feedback with verification cues led to decreased persistence, decreased strategy variability, and higher reliance on entrenched strategies relative to feedback that contained the correct answer alone. In terms of source, feedback from the computer alone enhanced children's accuracy; however, the most resilient children received feedback from the computer and a person. Findings are discussed in light of existing feedback theories.
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Affiliation(s)
- Megan Merrick
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA
| | - Emily R Fyfe
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA.
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Baboolal SO, Singaram VS. Implementation and Impact of an Adapted Digital Perioperative Competency-Building Tool to Enhance Teaching, Learning And Feedback in Postgraduate Competency-Based Medical Education. J Surg Educ 2024; 81:722-740. [PMID: 38492984 DOI: 10.1016/j.jsurg.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 03/18/2024]
Abstract
OBJECTIVES The purpose of this educational intervention was to introduce, iteratively adapt, and implement a digital formative assessment tool in a surgical speciality. The study also evaluated the intervention's impact on perioperative teaching, learning, feedback, and surgical competency. DESIGN A participatory action research model with a mixed methods approach. SETTING This study was performed over 10 months in an institutional hospital in South Africa with a general surgery department. PARTICIPANTS Twelve supervising surgical trainers/faculty and 12 surgical trainees/residents consented to participate in the intervention. RESULTS The first 4 months of the intervention focused on relationship building, a multi-stakeholder contextual needs assessment and training sessions to support a shared mindset and shift in the teaching and learning culture. The final adapted perioperative competency-building tool comprised a 23-item assessment with four open-text answers (Table 1). Over the following 6-month period, 48 workplace-based competency-building perioperative evaluations were completed. Most trainees took less than 5 minutes to self-assess (67%) before most trainers (67%) took less than 5 minutes to give oral feedback to the trainee after the perioperative supervised learning encounter. On average, the digital tool took 6 minutes to complete during the bidirectional perioperative teaching and learning encounter with no negative impact on the operational flow. All trainers and trainees reported the training and implementation of the digital tool to be beneficial to teaching, learning, feedback, and the development of surgical competency. Analysis of the completed tools revealed several trainees showing evidence of progression in surgical competency for index procedures within the speciality. The focus groups and interviews also showed a change in the teaching and learning culture: more positively framed, frequent, structured, and specific feedback, improved accountability, and trainee-trainer perioperative readiness for teaching. Highlighted changes included the usefulness of trainee self-assessment before perioperative trainer feedback and the tool's value in improving competency to Kirkpatrick Level 4. CONCLUSION Implementing an adapted digital Workplace-Based Assessment (WBA) tool using a participatory action research model has proven successful in enhancing the effectiveness of supervised perioperative teaching and learning encounters. This approach has improved teaching and feedback practices, facilitated the development of surgical competency, and ultimately impacted the overall culture to Kirkpatrick level 4. Importantly, it has positively influenced the trainee-trainer relationship dynamic. Based on these positive outcomes, we recommend using this effective method and our relationship-centred framework for implementing formative competency-building tools in future studies. By doing so, larger-scale and successful implementation of Competency-Based Medical Education (CBME) could be achieved in various contexts. This approach can potentially enhance teaching and learning encounters, promote competency development, and improve the overall educational experience for surgical trainees and trainers.
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Affiliation(s)
- Sandika O Baboolal
- School of Clinical Medicine College of Health Sciences University of KwaZulu Natal 719 Umbilo Road, Umbilo Durban 4001 South Africa; Ophthalmology Department, Division of Surgery, James Paget University Hospital NHS Foundation Trust, United Kingdom.
| | - Veena S Singaram
- School of Clinical Medicine College of Health Sciences University of KwaZulu Natal 719 Umbilo Road, Umbilo Durban 4001 South Africa
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22
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Li H, Wang Y, Wan Y, Li M, Xu J, Wang Q, Wu D. Stimuli-responsive incremental DNA machine auto-catalyzed CRISPR-Cas12a feedback amplification permits ultrasensitive molecular diagnosis of esophageal cancer-related microRNA. Talanta 2024; 271:125675. [PMID: 38245957 DOI: 10.1016/j.talanta.2024.125675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/07/2024] [Accepted: 01/13/2024] [Indexed: 01/23/2024]
Abstract
Development of new diagnostic methods is essential for disease diagnosis and treatment. In this work, we present a stimuli-responsive incremental DNA machine auto-catalyzed CRISPR-Cas12a (SRI-DNA machine/CRISPR-Cas12a) feedback amplification for ultrasensitive molecular detection of miRNA-21, which is an important biomarker related closely to the initiation and development of cancers, such as esophageal cancer. Strategically, the powerful SRI-DNA machine and efficient trans-cleavage activity of the CRISPR-Cas12a system are ingeniously integrated via a rationally designed probe termed as stem-elongated functional hairpin probe (SEF-HP). The SRI-DNA machine begins with the target miRNA, the trigger of the reaction, binding complementarily to the SEF-HP, followed by autonomously performed mechanical strand replication, cleavage, and displacement circuit at multiple sites. This conversion process led to the amplified generation of numerous DNA activators that are complementary with CRISPR RNA (CrRNA). Once formed the DNA activator/CrRNA heteroduplex, the trans-cleavage activity of the CRISPR-Cas12a was activated to nonspecific cleavage of single-stranded areas of a reporter probe for fluorescence emission. Under optimal conditions, the target miRNA can be detected with a wide linear range and an excellent specificity. As a proof-of-concept, this SRI-DNA machine/CRISPR-Cas12a feedback amplification system is adaptable and scalable to higher-order artificial amplification circuits for biomarkers detection, highlighting its promising potential in early diagnosis and disease treatment.
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Affiliation(s)
- Hongxia Li
- Department of Oncology, Hefei First People's Hospital, Third Affiliated Hospital of Anhui Medical University, Hefei, 230032, PR China
| | - Yi Wang
- Department of Oncology, Hefei First People's Hospital, Third Affiliated Hospital of Anhui Medical University, Hefei, 230032, PR China
| | - Yu Wan
- Department of Oncology, Hefei First People's Hospital, Third Affiliated Hospital of Anhui Medical University, Hefei, 230032, PR China
| | - Meimei Li
- Department of Oncology, Hefei First People's Hospital, Third Affiliated Hospital of Anhui Medical University, Hefei, 230032, PR China
| | - Jianguo Xu
- Jiaxing Key Laboratory of Molecular Recognition and Sensing, College of Biological, Chemical Sciences and Engineering, Jiaxing University, Zhejiang, Jiaxing, 314001, PR China; Engineering Research Center of Bio-Process, Ministry of Education, School of Food and Biological, Hefei University of Technology, Hefei, 230009, PR China.
| | - Qi Wang
- Key Laboratory of Embryo Development and Reproductive Regulation, Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, 236037, PR China.
| | - Donglei Wu
- Department of Oncology, Hefei First People's Hospital, Third Affiliated Hospital of Anhui Medical University, Hefei, 230032, PR China.
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Millar B, Hussain F. Assessment of an online open-book examination in postgraduate dentistry. Eur J Dent Educ 2024; 28:447-451. [PMID: 37964695 DOI: 10.1111/eje.12967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 01/12/2023] [Accepted: 10/13/2023] [Indexed: 11/16/2023]
Abstract
AIM To investigate the impact of changing from in-person written assessments to open-book online assessments and assess grade inflation, student preferences and potential cheating. MATERIALS AND METHODS Data from the Master of Clinical Dentistry in Fixed and Removable Prosthodontics (MClinDent FRP) postgraduate programme in dentistry was analysed. A comparison was made between the results from 3 years of traditional format written examinations (2017-2019) and the same examinations in an open-book online format over 2 years (2020 and 2021). RESULTS A comparison of assignment grades (all in open-book online format) over the 5 years 2017-2021 showed no significant difference in mean grades, suggesting the academic ability of each cohort was similar. The examination results increased by 2.5% (2020) and 1.9% (2021) compared with the equivalent data from 2017 to 2019. This shows modest grade inflation, which was highly significant (t 4.73, df 937, p < .00001) due to the change in format but suggests that no widespread collusion was taking place to raise the grades. Student feedback strongly endorsed the open-book online format and was of the opinion that it was less stressful. CONCLUSIONS The move to open-book examinations was supported by student feedback, and the comparison of results, while showing an expected grade inflation, did not provide evidence that cheating was taking place through enhanced examination grades.
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Affiliation(s)
- Brian Millar
- Faculty of Dentistry, Oral & Craniofacial Sciences, Kings College London, London, UK
| | - Fariha Hussain
- Faculty of Dentistry, Oral & Craniofacial Sciences, Kings College London, London, UK
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24
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Gao B, Shao T, Tu H, Ma Q, Liu Z, Han T. Exploring Bimanual Haptic Feedback for Spatial Search in Virtual Reality. IEEE Trans Vis Comput Graph 2024; 30:2422-2433. [PMID: 38437136 DOI: 10.1109/tvcg.2024.3372045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Spatial search tasks are common and crucial in many Virtual Reality (VR) applications. Traditional methods to enhance the performance of spatial search often employ sensory cues such as visual, auditory, or haptic feedback. However, the design and use of bimanual haptic feedback with two VR controllers for spatial search in VR remains largely unexplored. In this work, we explored bimanual haptic feedback with various combinations of haptic properties, where four types of bimanual haptic feedback were designed, for spatial search tasks in VR. Two experiments were designed to evaluate the effectiveness of bimanual haptic feedback on spatial direction guidance and search in VR. The results from the first experiment reveal that our proposed bimanual haptic schemes significantly enhanced the recognition of spatial directions in terms of accuracy and speed compared to spatial audio feedback. The second experiment's findings suggest that the performance of bimanual haptic feedback was comparable to or even better than the visual arrow, especially in reducing the angle of head movement and enhancing searching targets behind the participants, which was supported by subjective feedback as well. Based on these findings, we have derived a set of design recommendations for spatial search using bimanual haptic feedback in VR.
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Tanaka P, Soo Park Y, Chen CY, Yumul R, Macario A. Domains Influencing Faculty Decisions on the Level of Supervision Required for Anesthesiology EPAs with Analysis of Feedback Comments. J Surg Educ 2024; 81:741-752. [PMID: 38553368 DOI: 10.1016/j.jsurg.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/30/2023] [Accepted: 02/02/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVE The purpose of this qualitative study was to examine responses related to entrustment and feedback comments from an assessment tool. DESIGN Qualitative analyses using semi-structured interviews and analysis of narrative comments. SETTING Main hospital OR suite at a large academic medical center. PARTICIPANTS faculty, and residents who work in the OR suite. RESULTS Seven of the 14 theoretical domains from the Theoretical Domains Framework were identified as influencing faculty decision on entrustment: knowledge, skills, intention, memory/attention/decision processes, environmental context, and resources, beliefs of capabilities, and reinforcement. The majority (651/1116 (58.4%)) of faculty comments were critical/modest praise and relevant, consistent across all 6 EPAs. The written in feedback comments for all 1,116 Web App EPA assessments yielded a total of 1,599 sub-competency specific responses. These responses were mapped to core competencies, and at least once to 13 of the 23 ACGME subcompetencies. CONCLUSIONS Domains identified as influencing faculty decision on entrustment were knowledge, skills, intention, memory/attention/decision processes, environmental context, and resources, beliefs of capabilities, and reinforcement. Most narrative feedback comments were critical/modest praise and relevant, consistent across each of the EPAs.
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Affiliation(s)
- Pedro Tanaka
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California.
| | - Yoon Soo Park
- Associate Professor, Department of Medical Education, University of Illinois at Chicago College of Medicine, Chicago, Illinois
| | - Chien-Yu Chen
- Department of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan; Department of Humanities in Medicine, School of Medicine, College of Medicine, Taipei
| | - Roya Yumul
- Professor, Cedars-Sinai Medical Center, Los Angeles, California
| | - Alex Macario
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California
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Borrelli AM, Birch RJ, Spencer K. How does staff and patient feedback on hospital quality relate to mortality outcomes? A provider-level national study. Health Serv Manage Res 2024; 37:115-122. [PMID: 37368436 DOI: 10.1177/09514848231179182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
This study aimed to use national data to examine the relationship between staff and inpatient survey results (National Health Service (NHS) Friends and Family Test (FFT)) and assess how these align with more traditional measurements of hospital quality as captured by the summary hospital mortality indicator (SHMI). Provider level FFT responses were obtained for 128 English non-specialist acute providers for staff and inpatients between April 2016 and March 2019. Multilevel linear regression models assessed the relationship between staff and patient FFT recommendations, and separately how SHMI related to each of staff and patient FFT recommendations. A total of 1,536 observations were recorded across all providers and financial quarters. Patients were more likely to recommend their provider (95.5%) than staff (76.8%). In multivariable regression, a statistically significant association was observed between staff and patient FFT recommendations. A statistically significant negative relationship was also observed between staff FFT recommendations and SHMI. The association between SHMI and staff FFT recommendations suggests that staff feedback tools may provide a useful analogue for providers in potential need of intervention and improvement in care. For patients meanwhile, qualitative approaches and hospital organisations working in partnership with patients may provide better opportunities for patients to drive improvement.
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Affiliation(s)
- Antonio Michael Borrelli
- Sheffield Teaching Hospitals NHS Foundation Trust, Northern General Hospital, South Yorkshire, Sheffield S5 7AT, UK
| | - Rebecca J Birch
- Leeds Institute for Data Analytics, University of Leeds, Leeds, UK
| | - Katie Spencer
- Leeds Institute for Data Analytics, University of Leeds, Leeds, UK
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27
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Morgan D, Lee K. Using Video Feedback to Help Nursing Students Learn NextGen Testing. Nurse Educ 2024; 49:E169. [PMID: 37729088 DOI: 10.1097/nne.0000000000001528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Affiliation(s)
- Deidra Morgan
- By Deidra Morgan , DNP, RN, and Keyshawnna Lee , PhD, RNC-OB, The University of Mississippi School of Nursing, Jackson,
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28
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Mo H, Li R, Yang N, Han J, Xiao X, Zhang Y, Xiao Z, Jiao L, Xu Q, Tu K. USP40 promotes hepatocellular carcinoma progression through a YAP/USP40 positive feedback loop. Cancer Lett 2024; 589:216832. [PMID: 38537774 DOI: 10.1016/j.canlet.2024.216832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/12/2024] [Accepted: 03/21/2024] [Indexed: 04/20/2024]
Abstract
Yes-associated protein (YAP) is an essential driver of hepatocellular carcinoma (HCC) progression and the ubiquitin-proteasome system controls its abundance. However, the role of ubiquitin-specific protease 40 (USP40) in YAP stability remains unclear. Here, USP40 was first identified as a novel regulator of YAP abundance and its target genes in HCC cells. USP40 interacted with YAP to remove the lysine 48 (K48)-linked polyubiquitination of YAP at K252 and K315 sites, thereby maintaining YAP stability. USP40 facilitated the proliferation, colony formation, migration and spheroid formation of HCC cells in vitro and promoted HCC growth in vivo in a YAP-dependent manner. In turn, YAP transcriptionally activated USP40 expression in HCC cells. RNA sequencing analysis showed that about 37% of USP40-regulated genes overlapped with YAP-regulated genes. Interestingly, stiffness-induced USP40 upregulation was abolished by YAP knockdown, and USP40 knockdown attenuated stiffness-induced YAP accumulation in HCC cells. Clinical data demonstrated that USP40 was positively associated with YAP expression in HCC tissues and its high expression indicated a poor prognosis. In conclusion, the USP40/YAP positive feedback loop contributes to HCC progression, suggesting that USP40 may be a promising drug target for anti-HCC.
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Affiliation(s)
- Huanye Mo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Runtian Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Nan Yang
- Department of Infectious Diseases, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Jiaqi Han
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Xuelian Xiao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Yilei Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Zhengtao Xiao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Lianying Jiao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Qiuran Xu
- Zhejiang Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou 310014, China.
| | - Kangsheng Tu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
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Dickerson KL, Quas JA. Compensatory prosocial behavior in high-risk adolescents observing social exclusion: The effects of emotion feedback. J Exp Child Psychol 2024; 241:105840. [PMID: 38245916 DOI: 10.1016/j.jecp.2023.105840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024]
Abstract
Although exposure to violence has been consistently associated with deficits in prosocial behavior among adolescents, effective methods of mitigating these deficits have yet to be identified. The current investigation tested whether prosocial behavior could be promoted by providing adolescents with feedback about the emotional states of others and whether the effects of feedback varied between adolescents who had versus had not experienced violence in the home or in the community. Adolescents aged 8 to 17 years with (n = 87) and without (n = 61) histories of violence exposure completed a virtual social exclusion ball-tossing paradigm in which information about an excluded peer's emotions (sad, angry, or neutral) was experimentally manipulated. Among adolescents with histories of violence exposure, those who received feedback that the peer was sad due to being excluded compensated by throwing the ball more often to that peer. In contrast, adolescents without histories of violence exposure did not engage in compensatory prosocial behavior, instead maintaining a relatively even number of tosses to all players. Findings offer new insight into simple potential methods of eliciting prosocial behavior in adolescents for whom such responding may be compromised and may provide a potential starting point for interventions.
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Affiliation(s)
- Kelli L Dickerson
- Department of Informatics, University of California, Irvine, Irvine, CA 92697, USA.
| | - Jodi A Quas
- Department of Psychological Science, University of California, Irvine, Irvine, CA 92697, USA
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Biener V, Farzinnejad F, Schuster R, Tabaei S, Lindlein L, Hu J, Nouri N, Dudley JJ, Krlstensson PO, Muller J, Grubert J. Hold Tight: Identifying Behavioral Patterns During Prolonged Work in VR Through Video Analysis. IEEE Trans Vis Comput Graph 2024; 30:2796-2806. [PMID: 38437123 DOI: 10.1109/tvcg.2024.3372048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
VR devices have recently been actively promoted as tools for knowledge workers and prior work has demonstrated that VR can support some knowledge worker tasks. However, only a few studies have explored the effects of prolonged use of VR such as a study observing 16 participants working in VR and a physical environment for one work-week each and reporting mainly on subjective feedback. As a nuanced understanding of participants' behavior in VR and how it evolves over time is still missing, we report on the results from an analysis of 559 hours of video material obtained in this prior study. Among other findings, we report that (1) the frequency of actions related to adjusting the headset reduced by 46% and the frequency of actions related to supporting the headset reduced by 42% over the five days; (2) the HMD was removed 31% less frequently over the five days but for 41% longer periods; (3) wearing an HMD is disruptive to normal patterns of eating and drinking, but not to social interactions, such as talking. The combined findings in this work demonstrate the value of long-term studies of deployed VR systems and can be used to inform the design of better, more ergonomic VR systems as tools for knowledge workers.
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31
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Zhao S, Xiao M, Li L, Zhang H, Shan M, Cui S, Zhang L, Zhang G, Wu S, Jin C, Yang J, Lu X. A unique circ_0067716/EIF4A3 double-negative feedback loop impacts malignant transformation of human bronchial epithelial cells induced by benzo(a)pyrene. Sci Total Environ 2024; 923:171349. [PMID: 38438030 DOI: 10.1016/j.scitotenv.2024.171349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/06/2024]
Abstract
Benzo(a)pyrene as a pervasive environmental contaminant is characterized by its substantial genotoxicity, and epidemiological investigations have established a correlation between benzo(a)pyrene exposure and the susceptibility to human lung cancer. Notably, much research has focused on the link between epigenetic alterations and lung cancer induced by chemicals, although circRNAs are also emerging as relevant contributors to the carcinogenic process of benzo(a)pyrene. In this study, we identified circ_0067716 as being significantly upregulated in response to stress injury and downregulated during malignant transformation induced by benzo(a)pyrene-7,8-diol-9,10-epoxide (BPDE) in human bronchial epithelial cells. The observed differential expression of circ_0067716 in cells treated with BPDE for varying durations suggests a strong correlation between this circRNA and BPDE exposure. The tissue samples of lung cancer patients also suggest that a lower circ_0067716 expression is associated with BPDE-DNA adduct levels. Remarkably, we demonstrate that EIF4A3, located in the nucleus, interacts with the flanking sequences of circ_0067716 and inhibits its biogenesis. Conversely, circ_0067716 is capable of sequestering EIF4A3 in the cytoplasm, thereby preventing its translocation into the nucleus. EIF4A3 and circ_0067716 can form a double-negative feedback loop that could be affected by BPDE. During the initial phase of BPDE exposure, the expression of circ_0067716 was increased in response to stress injury, resulting in cell apoptosis through the involvement of miR-324-5p/DRAM1/BAX axis. Subsequently, as cellular adaptation progressed, long-term induction due to BPDE exposure led to an elevated EIF4A3 and a reduced circ_0067716 expression, which facilitated the proliferation of cells by stabilizing the PI3K/AKT pathway. Thus, our current study describes the effects of circ_0067716 on the genotoxicity and carcinogenesis induced by benzo(a)pyrene and puts forwards to the possible regulatory mechanism on the occurrence of smoking-related lung cancer, providing a unique insight based on epigenetics.
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Affiliation(s)
- Shuang Zhao
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Mingyang Xiao
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Liuli Li
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Hongchao Zhang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Mingming Shan
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Su Cui
- Department of Thoracic Surgery Ward 2, The First Hospital of China Medical University, Shenyang 110005, People's Republic of China
| | - Liang Zhang
- Department of Thoracic Surgery, Liaoning Cancer Hospital & Institute, Shenyang 110042, People's Republic of China
| | - Guopei Zhang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Shengwen Wu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Cuihong Jin
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Jinghua Yang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China
| | - Xiaobo Lu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education (China Medical University), Shenyang 110122, People's Republic of China; Department of Toxicology, School of Public Health, China Medical University, Shenyang 110122, People's Republic of China.
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Hrabovszky E. An historical step in our understanding of hypothalamic oestrogen feedback. Nat Rev Endocrinol 2024; 20:258. [PMID: 38418670 DOI: 10.1038/s41574-024-00968-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Affiliation(s)
- Erik Hrabovszky
- Reproductive Neurobiology Research Group, Institute of Experimental Medicine, Budapest, Hungary.
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Stadt MM, Layton AT. A modeling analysis of whole body potassium regulation on a high-potassium diet: proximal tubule and tubuloglomerular feedback effects. Am J Physiol Regul Integr Comp Physiol 2024; 326:R401-R415. [PMID: 38465401 DOI: 10.1152/ajpregu.00283.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/15/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024]
Abstract
Potassium (K+) is an essential electrolyte that plays a key role in many physiological processes, including mineralcorticoid action, systemic blood-pressure regulation, and hormone secretion and action. Indeed, maintaining K+ balance is critical for normal cell function, as too high or too low K+ levels can have serious and potentially deadly health consequences. K+ homeostasis is achieved by an intricate balance between the intracellular and extracellular fluid as well as balance between K+ intake and excretion. This is achieved via the coordinated actions of regulatory mechanisms such as the gastrointestinal feedforward effect, insulin and aldosterone upregulation of Na+-K+-ATPase uptake, and hormone and electrolyte impacts on renal K+ handling. We recently developed a mathematical model of whole body K+ regulation to unravel the individual impacts of these regulatory mechanisms. In this study, we extend our mathematical model to incorporate recent experimental findings that showed decreased fractional proximal tubule reabsorption under a high-K+ diet. We conducted model simulations and sensitivity analyses to investigate how these renal alterations impact whole body K+ regulation. Model predictions quantify the sensitivity of K+ regulation to various levels of proximal tubule K+ reabsorption adaptation and tubuloglomerular feedback. Our results suggest that the reduced proximal tubule K+ reabsorption under a high-K+ diet could achieve K+ balance in isolation, but the resulting tubuloglomerular feedback reduces filtration rate and thus K+ excretion.NEW & NOTEWORTHY Potassium homeostasis is maintained in the body by a complex system of regulatory mechanisms. This system, when healthy, maintains a small extracellular potassium concentration, despite large fluctuations of dietary potassium. The complexities of the system make this problem well suited for investigation with mathematical modeling. In this study, we extend our mathematical model to consider recent experimental results on renal potassium handling on a high potassium diet and investigate the impacts from a whole body perspective.
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Affiliation(s)
- Melissa M Stadt
- Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada
| | - Anita T Layton
- Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada
- Cheriton School of Computer Science, University of Waterloo, Waterloo, Ontario, Canada
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
- Department of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
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Yang Z, Chen H, Yin S, Mo H, Chai F, Luo P, Li Y, Ma L, Yi Z, Sun Y, Chen Y, Wu J, Wang W, Yin T, Zhu J, Shi C, Zhang F. PGR-KITLG signaling drives a tumor-mast cell regulatory feedback to modulate apoptosis of breast cancer cells. Cancer Lett 2024; 589:216795. [PMID: 38556106 DOI: 10.1016/j.canlet.2024.216795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/05/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024]
Abstract
The immune microenvironment constructed by tumor-infiltrating immune cells and the molecular phenotype defined by hormone receptors (HRs) have been implicated as decisive factors in the regulation of breast cancer (BC) progression. Here, we found that the infiltration of mast cells (MCs) informed impaired prognoses in HR(+) BC but predicted improved prognoses in HR(-) BC. However, molecular features of MCs in different BC remain unclear. We next discovered that HR(-) BC cells were prone to apoptosis under the stimulation of MCs, whereas HR(+) BC cells exerted anti-apoptotic effects. Mechanistically, in HR(+) BC, the KIT ligand (KITLG), a major mast cell growth factor in recruiting and activating MCs, could be transcriptionally upregulated by the progesterone receptor (PGR), and elevate the production of MC-derived granulin (GRN). GRN attenuates TNFα-induced apoptosis in BC cells by competitively binding to TNFR1. Furthermore, disruption of PGR-KITLG signaling by knocking down PGR or using the specific KITLG-cKIT inhibitor iSCK03 potently enhanced the sensitivity of HR(+) BC cells to MC-induced apoptosis and exerted anti-tumor activity. Collectively, these results demonstrate that PGR-KITLG signaling in BC cells preferentially induces GRN expression in MCs to exert anti-apoptotic effects, with potential value in developing precision medicine approaches for diagnosis and treatment.
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Affiliation(s)
- Zeyu Yang
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China; Graduate School of Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Hongdan Chen
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Supeng Yin
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Hongbiao Mo
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Fan Chai
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Peng Luo
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Yao Li
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Le Ma
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Ziying Yi
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Yizeng Sun
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Yan Chen
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Jie Wu
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Weihua Wang
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Tingjie Yin
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Junping Zhu
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China
| | - Chunmeng Shi
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Fan Zhang
- Department of Breast and Thyroid Surgery, Chongqing General Hospital, Chongqing, 401147, China; Graduate School of Medicine, Chongqing Medical University, Chongqing, 400016, China.
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Fuentes-Cimma J, Sluijsmans D, Riquelme A, Villagran I, Isbej L, Olivares-Labbe MT, Heeneman S. Designing feedback processes in the workplace-based learning of undergraduate health professions education: a scoping review. BMC Med Educ 2024; 24:440. [PMID: 38654360 PMCID: PMC11036781 DOI: 10.1186/s12909-024-05439-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND Feedback processes are crucial for learning, guiding improvement, and enhancing performance. In workplace-based learning settings, diverse teaching and assessment activities are advocated to be designed and implemented, generating feedback that students use, with proper guidance, to close the gap between current and desired performance levels. Since productive feedback processes rely on observed information regarding a student's performance, it is imperative to establish structured feedback activities within undergraduate workplace-based learning settings. However, these settings are characterized by their unpredictable nature, which can either promote learning or present challenges in offering structured learning opportunities for students. This scoping review maps literature on how feedback processes are organised in undergraduate clinical workplace-based learning settings, providing insight into the design and use of feedback. METHODS A scoping review was conducted. Studies were identified from seven databases and ten relevant journals in medical education. The screening process was performed independently in duplicate with the support of the StArt program. Data were organized in a data chart and analyzed using thematic analysis. The feedback loop with a sociocultural perspective was used as a theoretical framework. RESULTS The search yielded 4,877 papers, and 61 were included in the review. Two themes were identified in the qualitative analysis: (1) The organization of the feedback processes in workplace-based learning settings, and (2) Sociocultural factors influencing the organization of feedback processes. The literature describes multiple teaching and assessment activities that generate feedback information. Most papers described experiences and perceptions of diverse teaching and assessment feedback activities. Few studies described how feedback processes improve performance. Sociocultural factors such as establishing a feedback culture, enabling stable and trustworthy relationships, and enhancing student feedback agency are crucial for productive feedback processes. CONCLUSIONS This review identified concrete ideas regarding how feedback could be organized within the clinical workplace to promote feedback processes. The feedback encounter should be organized to allow follow-up of the feedback, i.e., working on required learning and performance goals at the next occasion. The educational programs should design feedback processes by appropriately planning subsequent tasks and activities. More insight is needed in designing a full-loop feedback process, in which specific attention is needed in effective feedforward practices.
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Affiliation(s)
- Javiera Fuentes-Cimma
- Department of Health Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile.
- School of Health Professions Education, Maastricht University, Maastricht, Netherlands.
| | | | - Arnoldo Riquelme
- Centre for Medical and Health Profession Education, Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ignacio Villagran
- Department of Health Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Lorena Isbej
- School of Health Professions Education, Maastricht University, Maastricht, Netherlands
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Sylvia Heeneman
- Department of Pathology, Faculty of Health, Medicine and Health Sciences, Maastricht University, Maastricht, Netherlands
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Hu P, Zhang G, Ba H, Ren J, Li J, Wang Z, Li C. Reciprocal negative feedback between Prrx1 and miR-140-3p regulates rapid chondrogenesis in the regenerating antler. Cell Mol Biol Lett 2024; 29:56. [PMID: 38643083 PMCID: PMC11031908 DOI: 10.1186/s11658-024-00573-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/05/2024] [Indexed: 04/22/2024] Open
Abstract
During growth phase, antlers exhibit a very rapid rate of chondrogenesis. The antler is formed from its growth center reserve mesenchyme (RM) cells, which have been found to be the derivatives of paired related homeobox 1 (Prrx1)-positive periosteal cells. However, the underlying mechanism that drives rapid chondrogenesis is not known. Herein, the miRNA expression profiles and chromatin states of three tissue layers (RM, precartilage, and cartilage) at different stages of differentiation within the antler growth center were analyzed by RNA-sequencing and ATAC-sequencing. We found that miR-140-3p was the miRNA that exhibited the greatest degree of upregulation in the rapidly growing antler, increasing from the RM to the cartilage layer. We also showed that Prrx1 was a key upstream regulator of miR-140-3p, which firmly confirmed by Prrx1 CUT&Tag sequencing of RM cells. Through multiple approaches (three-dimensional chondrogenic culture and xenogeneic antler model), we demonstrated that Prrx1 and miR-140-3p functioned as reciprocal negative feedback in the antler growth center, and downregulating PRRX1/upregulating miR-140-3p promoted rapid chondrogenesis of RM cells and xenogeneic antler. Thus, we conclude that the reciprocal negative feedback between Prrx1 and miR-140-3p is essential for balancing mesenchymal proliferation and chondrogenic differentiation in the regenerating antler. We further propose that the mechanism underlying chondrogenesis in the regenerating antler would provide a reference for helping understand the regulation of human cartilage regeneration and repair.
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Affiliation(s)
- Pengfei Hu
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China.
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China.
| | - Guokun Zhang
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China
| | - Hengxing Ba
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China
| | - Jing Ren
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China
| | - Jiping Li
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China
| | - Zhen Wang
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China
| | - Chunyi Li
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun, China.
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Shafian S, Ilaghi M, Shahsavani Y, Okhovati M, Soltanizadeh A, Aflatoonian S, Karamoozian A. The feedback dilemma in medical education: insights from medical residents' perspectives. BMC Med Educ 2024; 24:424. [PMID: 38641609 PMCID: PMC11031893 DOI: 10.1186/s12909-024-05398-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 04/05/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND Feedback is a critical component of the learning process in a clinical setting. This study aims to explore medical residents' perspectives on feedback delivery and identify potential barriers to feedback-seeking in clinical training. METHODS This cross-sectional study involved 180 medical residents across seventeen specialties. We employed the validated Residency Education Feedback Level Evaluation in Clinical Training (REFLECT) tool to assess residents' perspectives on their attitude toward feedback, quality of feedback, perceived importance, and reaction to feedback. Additionally, we explored barriers to feedback-seeking behavior among medical residents. RESULTS The majority of medical residents held positive attitudes toward feedback. They agreed that feedback improves their clinical performance (77.7%), professional behavior (67.2%), and academic motivation (56.7%), while also influencing them to become a better specialist in their future career (72.8%). However, the study revealed critical deficiencies in the feedback process. Only 25.6% of residents reported receiving regular feedback and less than half reported that feedback was consistently delivered at suitable times and locations, was sufficiently clear or included actionable plans for improvement. A minority (32.2%) agreed that faculty had sufficient skills to deliver feedback effectively. Moreover, peer-to-peer feedback appeared to be a primary source of feedback among residents. Negative feedback, though necessary, often triggered feelings of stress, embarrassment, or humiliation. Notably, there were no significant differences in feedback perceptions among different specialties. The absence of a feedback-seeking culture emerged as a central barrier to feedback-seeking behavior in the clinical setting. CONCLUSIONS Establishing shared expectations and promoting a culture of feedback-seeking could bridge the gap between residents' perceptions and faculty feedback delivery. Furthermore, recognizing the role of senior and peer residents as valuable feedback sources can contribute to more effective feedback processes in clinical training, ultimately benefiting resident development and patient care.
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Affiliation(s)
- Sara Shafian
- Department of Medical Education, Education Development Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehran Ilaghi
- Department of Medical Education, Education Development Center, Kerman University of Medical Sciences, Kerman, Iran.
- Institute of Neuropharmacology, Kerman Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Yasamin Shahsavani
- Oral and Dental Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Maryam Okhovati
- Medical Informatics Research Center, Institute for Future Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Adel Soltanizadeh
- Department of Medical Education, Education Development Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Sarah Aflatoonian
- Department of Medical Education, Education Development Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Ali Karamoozian
- Department of Biostatistics and Epidemiology, Kerman University of Medical Sciences, Kerman, Iran
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Lee S, Lee Y, Park KM. Performance feedback and obsessive passion: The moderating role of human capital. PLoS One 2024; 19:e0302180. [PMID: 38635568 PMCID: PMC11025744 DOI: 10.1371/journal.pone.0302180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/28/2024] [Indexed: 04/20/2024] Open
Abstract
Based on the behavioral theory of the firm, we research how performance feedback influences the formation of CEOs' passion. We articulate that previous performance directly increases CEOs' passion. Specifically, positive affective outcomes (performance above aspiration-level) advance CEOs' positive feelings and motivation toward the domains of success (obsessive passion). For instance, when a firm accomplishes performance objectives, such as reaching sales goals, CEOs' positive feelings toward developing current products would be boosted. Moreover, negative affective outcomes (performance below aspiration-level) would also positively impact CEOs' passion since the CEOs would endeavor to reduce the difference between performance and their aspiration-level. As such, performance feedback is a critical antecedent of CEOs' obsessive passion. In addition, we apply human capital as a moderator between performance feedback and CEOs' obsessive passion. Results based on multiphase survey data from 189 CEOs of Korean small- and medium-sized enterprises indicate that both positive and negative performance feedback positively increase CEOs' obsessive passion. Moreover, human capital negatively moderates the relationship between positive performance feedback and CEOs' obsessive passion and positively moderates the relationship between negative performance feedback and CEOs' obsessive passion.
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Affiliation(s)
- Sanggeun Lee
- Whitman School of Management, Syracuse University, Syracuse, NY, United States of America
| | - Younggeun Lee
- College of Business and Economics, California State University, Los Angeles, CA, United States of America
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Richardson D, Butler M, Bull Olozabal O, Gupta N, Naser F, Sultan B, Caswell RJ. BASHH feedback from the 2023 IUSTI-Europe conference in Malta. Sex Transm Infect 2024; 100:197-198. [PMID: 38637028 DOI: 10.1136/sextrans-2024-056111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024] Open
Affiliation(s)
- Daniel Richardson
- Sexual Health and HIV, University Hospitals Sussex NHS Foundation Trust, Brighton, UK
- Global Health and Infection, Brighton and Sussex Medical School, Brighton, UK
| | - Michael Butler
- Jefferiss Wing, Imperial College Healthcare NHS Trust, London, UK
| | - Oliver Bull Olozabal
- Sexual Health and HIV, London North West University Healthcare NHS Trust, Harrow, London, UK
| | - Nadi Gupta
- Sexual Health and HIV, Rotherham NHS Foundation Trust, Rotherham, UK
| | - Fahad Naser
- Sexual Health and HIV, London North West University Healthcare NHS Trust, Harrow, London, UK
| | - Binta Sultan
- Central and North West London NHS Foundation Trust, London, UK
| | - Rachel J Caswell
- Sexual Health and HIV Medicine, University Hospital Birmingham NHS Foundation Trust, Birmingham, UK
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Conombo B, Guertin JR, Hoch JS, Grimshaw J, Bérubé M, Malo C, Berthelot S, Lauzier F, Stelfox HT, Turgeon AF, Archambault P, Belcaid A, Moore L. Implementation of an audit and feedback module targeting low-value clinical practices in a provincial trauma quality assurance program: a cost-effectiveness study. BMC Health Serv Res 2024; 24:479. [PMID: 38632593 PMCID: PMC11025277 DOI: 10.1186/s12913-024-10969-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Audit and Feedback (A&F) interventions based on quality indicators have been shown to lead to significant improvements in compliance with evidence-based care including de-adoption of low-value practices (LVPs). Our primary aim was to evaluate the cost-effectiveness of adding a hypothetical A&F module targeting LVPs for trauma admissions to an existing quality assurance intervention targeting high-value care and risk-adjusted outcomes. A secondary aim was to assess how certain A&F characteristics might influence its cost-effectiveness. METHODS We conducted a cost-effectiveness analysis using a probabilistic static decision analytic model in the Québec trauma care continuum. We considered the Québec Ministry of Health perspective. Our economic evaluation compared a hypothetical scenario in which the A&F module targeting LVPs is implemented in a Canadian provincial trauma quality assurance program to a status quo scenario in which the A&F module is not implemented. In scenarios analyses we assessed the impact of A&F characteristics on its cost-effectiveness. Results are presented in terms of incremental costs per LVP avoided. RESULTS Results suggest that the implementation of A&F module (Cost = $1,480,850; Number of LVPs = 6,005) is associated with higher costs and higher effectiveness compared to status quo (Cost = $1,124,661; Number of LVPs = 8,228). The A&F module would cost $160 per LVP avoided compared to status quo. The A&F module becomes more cost-effective with the addition of facilitation visits; more frequent evaluation; and when only high-volume trauma centers are considered. CONCLUSION A&F module targeting LVPs is associated with higher costs and higher effectiveness than status quo and has the potential to be cost-effective if the decision-makers' willingness-to-pay is at least $160 per LVP avoided. This likely represents an underestimate of true ICER due to underestimated costs or missed opportunity costs. Results suggest that virtual facilitation visits, frequent evaluation, and implementing the module in high-volume centers can improve cost-effectiveness.
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Affiliation(s)
- Blanchard Conombo
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada
| | - Jason R Guertin
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada
| | - Jeffrey S Hoch
- Division of Health Policy and Management, Department of Public Health Sciences, University of California at Davis, Davis, CA, USA
| | - Jeremy Grimshaw
- Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Mélanie Bérubé
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada
- Faculty of Nursing, Université Laval, Québec City, Québec, Canada
| | - Christian Malo
- Faculty of Nursing, Université Laval, Québec City, Québec, Canada
| | - Simon Berthelot
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada
- Department of Family Medicine and Emergency Medicine, Université Laval, Québec City, Québec, Canada
- Centre de Recherche Intégrée Pour Un Système Apprenant en Santé Et Services Sociaux, Centre Intégré de Santé Et de Services Sociaux de Chaudière-Appalaches, Lévis, Québec, Canada
| | - François Lauzier
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec City, Québec, Canada
| | - Henry T Stelfox
- Department of Critical Care Medicine, Medicine and Community Health Sciences, O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Alexis F Turgeon
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Québec City, Québec, Canada
| | - Patrick Archambault
- Department of Family Medicine and Emergency Medicine, Université Laval, Québec City, Québec, Canada
- VITAM-Centre de Recherche en Santé Durable, Québec City, Québec, Canada
| | - Amina Belcaid
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada
| | - Lynne Moore
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada.
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Quebec University Hospital, Centre de Recherche du CHU de Québec-Université Laval, 18E Rue, Local H-012a, Québec City, Québec, 1401G1J 1Z4, Canada.
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Isogai S, Nishimura A, Inoue A, Sonohara S, Tsugukuni T, Okada T, Takagi H. Functional analysis of feedback inhibition-insensitive aspartate kinase identified in a threonine-accumulating mutant of Saccharomyces cerevisiae. Appl Environ Microbiol 2024; 90:e0015524. [PMID: 38456673 PMCID: PMC11022571 DOI: 10.1128/aem.00155-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/15/2024] [Indexed: 03/09/2024] Open
Abstract
Humans and mammals need to ingest essential amino acids (EAAs) for protein synthesis. In addition to their importance as nutrients, EAAs are involved in brain homeostasis. However, elderly people are unable to efficiently consume EAAs from their daily diet due to reduced appetite and variations in the contents of EAAs in foods. On the other hand, strains of the yeast Saccharomyces cerevisiae that accumulate EAAs would enable elderly people to intakegest adequate amounts of EAAs and thus might slow down the neurodegenerative process, contributing to the extension of their healthy lifespan. In this study, we isolated a mutant (strain HNV-5) that accumulates threonine, an EAA, derived from a diploid laboratory yeast by conventional mutagenesis. Strain HNV-5 carries a novel mutation in the HOM3 gene encoding the Ala462Thr variant of aspartate kinase (AK). Enzymatic analysis revealed that the Ala462Thr substitution significantly decreased the sensitivity of AK activity to threonine feedback inhibition even in the presence of 50 mM threonine. Interestingly, Ala462Thr substitution did not affect the catalytic ability of Hom3, in contrast to previously reported amino acid substitutions that resulted in reduced sensitivity to threonine feedback inhibition. Furthermore, yeast cells expressing the Ala462Thr variant showed an approximately threefold increase in intracellular threonine content compared to that of the wild-type Hom3. These findings will be useful for the development of threonine-accumulating yeast strains that may improve the quality of life in elderly people.IMPORTANCEFor humans and mammals, essential amino acids (EAAs) play an important role in maintaining brain function. Therefore, increasing the intake of EAAs by using strains of the yeast Saccharomyces cerevisiae that accumulate EAAs may inhibit neurodegeneration in elderly people and thus contribute to extending healthy lifespan and improving their quality of life. Threonine, an EAA, is synthesized from aspartate. Aspartate kinase (AK) catalyzes the first step in threonine biosynthesis and is subject to allosteric regulation by threonine. Here, we isolated a threonine-accumulating mutant of S. cerevisiae by conventional mutagenesis and identified a mutant gene encoding a novel variant of AK. In contrast to previously isolated variants, the Hom3 variant exhibited AK activity that was insensitive to feedback inhibition by threonine but retained its catalytic ability. This resulted in increased production of threonine in yeast. These findings open up the possibility for the rational design of AK to increase threonine productivity in yeast.
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Affiliation(s)
- Shota Isogai
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Akira Nishimura
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Akiko Inoue
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Shino Sonohara
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Takashi Tsugukuni
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Tomoyuki Okada
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Hiroshi Takagi
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
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Ehrlich I, Ortiz-Tudela J, Tan YY, Muckli L, Shing YL. Mnemonic But Not Contextual Feedback Signals Defy Dedifferentiation in the Aging Early Visual Cortex. J Neurosci 2024; 44:e0607232023. [PMID: 38395614 PMCID: PMC11026335 DOI: 10.1523/jneurosci.0607-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 11/18/2023] [Accepted: 12/18/2023] [Indexed: 02/25/2024] Open
Abstract
Perception is an intricate interplay between feedforward visual input and internally generated feedback signals that comprise concurrent contextual and time-distant mnemonic (episodic and semantic) information. Yet, an unresolved question is how the composition of feedback signals changes across the lifespan and to what extent feedback signals undergo age-related dedifferentiation, that is, a decline in neural specificity. Previous research on this topic has focused on feedforward perceptual representation and episodic memory reinstatement, suggesting reduced fidelity of neural representations at the item and category levels. In this fMRI study, we combined an occlusion paradigm that filters feedforward input to the visual cortex and multivariate analysis techniques to investigate the information content in cortical feedback, focusing on age-related differences in its composition. We further asked to what extent differentiation in feedback signals (in the occluded region) is correlated to differentiation in feedforward signals. Comparing younger (18-30 years) and older female and male adults (65-75 years), we found that contextual but not mnemonic feedback was prone to age-related dedifferentiation. Semantic feedback signals were even better differentiated in older adults, highlighting the growing importance of generalized knowledge across ages. We also found that differentiation in feedforward signals was correlated with differentiation in episodic but not semantic feedback signals. Our results provide evidence for age-related adjustments in the composition of feedback signals and underscore the importance of examining dedifferentiation in aging for both feedforward and feedback processing.
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Affiliation(s)
- Isabelle Ehrlich
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
| | - Javier Ortiz-Tudela
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
- Department of Experimental Psychology, Mind, Brain, and Behavior Research Center, University of Granada, Granada 18013, Spain
| | - Yi You Tan
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
| | - Lars Muckli
- School of Psychology and of Neuroscience, University of Glasgow, Glasgow G12 8QB, United Kingdom
| | - Yee Lee Shing
- Department of Psychology, Goethe University Frankfurt, Frankfurt Am Main 60323, Germany
- IDeA Center for Individual Development and Adaptive Education, Frankfurt am Main 60323, Germany
- Brain Imaging Center, Goethe University Frankfurt, Frankfurt am Main 60528, Germany
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43
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Movilla Miangolarra A, Saxton DS, Yan Z, Rine J, Howard M. Two-way feedback between chromatin compaction and histone modification state explains Saccharomyces cerevisiae heterochromatin bistability. Proc Natl Acad Sci U S A 2024; 121:e2403316121. [PMID: 38593082 PMCID: PMC11032488 DOI: 10.1073/pnas.2403316121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 03/02/2024] [Indexed: 04/11/2024] Open
Abstract
Compact chromatin is closely linked with gene silencing in part by sterically masking access to promoters, inhibiting transcription factor binding and preventing polymerase from efficiently transcribing a gene. However, a broader hypothesis suggests that chromatin compaction can be both a cause and a consequence of the locus histone modification state, with a tight bidirectional interaction underpinning bistable transcriptional states. To rigorously test this hypothesis, we developed a mathematical model for the dynamics of the HMR locus in Saccharomyces cerevisiae, that incorporates activating histone modifications, silencing proteins, and a dynamic, acetylation-dependent, three-dimensional locus size. Chromatin compaction enhances silencer protein binding, which in turn feeds back to remove activating histone modifications, leading to further compaction. The bistable output of the model was in good agreement with prior quantitative data, including switching rates from expressed to silent states (and vice versa), and protein binding/histone modification levels within the locus. We then tested the model by predicting changes in switching rates as the genetic length of the locus was increased, which were then experimentally verified. Such bidirectional feedback between chromatin compaction and the histone modification state may be a widespread and important regulatory mechanism given the hallmarks of many heterochromatic regions: physical chromatin compaction and dimerizing (or multivalent) silencing proteins.
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Affiliation(s)
| | - Daniel S. Saxton
- Department of Molecular and Cell Biology, University of California, Berkeley, CA94720
| | - Zhi Yan
- Department of Molecular and Cell Biology, University of California, Berkeley, CA94720
| | - Jasper Rine
- Department of Molecular and Cell Biology, University of California, Berkeley, CA94720
| | - Martin Howard
- Department of Computational and Systems Biology, John Innes Centre, NorwichNR4 7UH, United Kingdom
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44
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Hulin J, Huddy V, Oliver P, Marshall J, Mohindra A, Delaney B, Mitchell C. Experiences of support for people who access voluntary, community and social enterprise (VCSE) organisations for self-harm: a qualitative study with stakeholder feedback. BMC Public Health 2024; 24:1059. [PMID: 38627716 PMCID: PMC11020776 DOI: 10.1186/s12889-024-18455-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 03/26/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Prevalence of self-harm In England is rising, however contact with statutory services remains relatively low. There is growing recognition of the potential role voluntary, community and social enterprise sector (VCSE) organisations have in the provision of self-harm support. We aimed to explore individuals' experiences of using these services and the barriers and facilitators to accessing support. METHODS Qualitative, online interviews with 23 adults (18+) who have accessed support from VCSE organisations for self-harm in the Yorkshire and the Humber region were undertaken. Interviews were audio recorded and transcribed verbatim. Thematic analysis was undertaken using NVivo software. RESULTS Participants described how a lack of service flexibility and the perception that their individual needs were not being heard often made them less likely to engage with both statutory and VCSE organisations. The complexity of care pathways made it difficult for them to access appropriate support when required, as did a lack of awareness of the types of support available. Participants described how engagement was improved by services that fostered a sense of community. The delivery of peer support played a key role in creating this sense of belonging. Education and workplace settings were also viewed as key sources of support for individuals, with a lack of mental health literacy acting as a barrier to access in these environments. CONCLUSIONS VCSE organisations can play a crucial role in the provision of support for self-harm, however, pathways into these services remain complex and links between statutory and non-statutory services need to be strengthened. The provision of peer support is viewed as a crucial component of effective support in VCSE organisations. Further supervision and training should be offered to those providing peer support to ensure that their own mental health is protected.
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Affiliation(s)
- Joe Hulin
- Sheffield Centre for Health and Related Research (SCHARR), School of Medicine and Population Health, University of Sheffield, Sheffield, UK.
| | - Vyv Huddy
- Department of Psychology, University of Sheffield, Sheffield, UK
| | - Phillip Oliver
- Primary Medical Care Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Jack Marshall
- Primary Medical Care Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Aarti Mohindra
- Primary Medical Care Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Brigitte Delaney
- Sheffield Centre for Health and Related Research (SCHARR), School of Medicine and Population Health, University of Sheffield, Sheffield, UK
- Primary Medical Care Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Caroline Mitchell
- Primary Medical Care Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
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45
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Ho E, Seltzer M, Jeon M. Are teachers meeting students' needs in untracked science classrooms? Evidence based on a causal inferential approach. PLoS One 2024; 19:e0300587. [PMID: 38625860 PMCID: PMC11020409 DOI: 10.1371/journal.pone.0300587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 03/01/2024] [Indexed: 04/18/2024] Open
Abstract
Tracking has been criticized for relegating disadvantaged students to lower track courses in which students encounter a greater lack of instructional support. While an end to tracks through detracking is a possible solution, there are concerns that detracking will create more heterogeneous classrooms, making it harder for teachers to provide adequate support to their students. Using the 2015 PISA dataset, this study conducts a causal inferential analysis to understand the differences in student perceptions of teaching in tracked and untracked environments. The results provide evidence that students' needs, with respect to adaptation of instruction and provision of individualized feedback and support, are being met to the same extent on average in tracked and untracked science classes, suggesting that teachers may not necessarily have a harder time meeting the needs of students in untracked classes.
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Affiliation(s)
- Eric Ho
- Department of Education, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Michael Seltzer
- Department of Education, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Minjeong Jeon
- Department of Education, University of California, Los Angeles, Los Angeles, California, United States of America
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46
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Zak JD, Reddy G, Konanur V, Murthy VN. Distinct information conveyed to the olfactory bulb by feedforward input from the nose and feedback from the cortex. Nat Commun 2024; 15:3268. [PMID: 38627390 PMCID: PMC11021479 DOI: 10.1038/s41467-024-47366-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 03/29/2024] [Indexed: 04/19/2024] Open
Abstract
Sensory systems are organized hierarchically, but feedback projections frequently disrupt this order. In the olfactory bulb (OB), cortical feedback projections numerically match sensory inputs. To unravel information carried by these two streams, we imaged the activity of olfactory sensory neurons (OSNs) and cortical axons in the mouse OB using calcium indicators, multiphoton microscopy, and diverse olfactory stimuli. Here, we show that odorant mixtures of increasing complexity evoke progressively denser OSN activity, yet cortical feedback activity is of similar sparsity for all stimuli. Also, representations of complex mixtures are similar in OSNs but are decorrelated in cortical axons. While OSN responses to increasing odorant concentrations exhibit a sigmoidal relationship, cortical axonal responses are complex and nonmonotonic, which can be explained by a model with activity-dependent feedback inhibition in the cortex. Our study indicates that early-stage olfactory circuits have access to local feedforward signals and global, efficiently formatted information about odor scenes through cortical feedback.
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Affiliation(s)
- Joseph D Zak
- Department of Biological Sciences, University of Illinois Chicago, Chicago, IL, 60607, USA.
- Department of Psychology, University of Illinois Chicago, Chicago, IL, 60607, USA.
| | - Gautam Reddy
- Physics & Informatics Laboratories, NTT Research, Inc., Sunnyvale, CA, 94085, USA
- Department of Physics, Princeton University, Princeton, NJ, 08540, USA
- Center for Brain Science, Harvard University, Cambridge, MA, 02138, USA
| | - Vaibhav Konanur
- Department of Biological Sciences, University of Illinois Chicago, Chicago, IL, 60607, USA
| | - Venkatesh N Murthy
- Center for Brain Science, Harvard University, Cambridge, MA, 02138, USA
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, 02138, USA
- Kempner Institute for the Study of Natural and Artificial Intelligence, Harvard University, Allston, 02134, USA
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47
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Taruselli MT, Qayum AA, Abebayehu D, Caslin HL, Dailey JM, Kotha A, Burchett JR, Kee SA, Maldonado TD, Ren B, Chao W, Zou L, Haque TT, Straus D, Ryan JJ. IL-33 Induces Cellular and Exosomal miR-146a Expression as a Feedback Inhibitor of Mast Cell Function. J Immunol 2024; 212:1277-1286. [PMID: 38381001 PMCID: PMC10984763 DOI: 10.4049/jimmunol.2200916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/30/2024] [Indexed: 02/22/2024]
Abstract
IL-33 is an inflammatory cytokine that promotes allergic disease by activating group 2 innate lymphoid cells, Th2 cells, and mast cells. IL-33 is increased in asthmatics, and its blockade suppresses asthma-like inflammation in mouse models. Homeostatic control of IL-33 signaling is poorly understood. Because the IL-33 receptor, ST2, acts via cascades used by the TLR family, similar feedback mechanisms may exist. MicroRNA (miR)-146a is induced by LPS-mediated TLR4 signaling and serves as a feedback inhibitor. Therefore, we explored whether miR-146a has a role in IL-33 signaling. IL-33 induced cellular and exosomal miR-146a expression in mouse bone marrow-derived mast cells (BMMCs). BMMCs transfected with a miR-146a antagonist or derived from miR-146a knockout mice showed enhanced cytokine expression in response to IL-33, suggesting that miR-146a is a negative regulator of IL-33-ST2 signaling. In vivo, miR-146a expression in plasma exosomes was elevated after i.p. injection of IL-33 in wild-type but not mast cell-deficient KitW-sh/W-sh mice. Finally, KitW-sh/W-sh mice acutely reconstituted with miR-146a knockout BMMCs prior to IL-33 challenge had elevated plasma IL-6 levels compared with littermates receiving wild-type BMMCs. These results support the hypothesis that miR-146a is a feedback regulator of IL-33-mediated mast cell functions associated with allergic disease.
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Affiliation(s)
| | - Amina Abdul Qayum
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Daniel Abebayehu
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Heather L. Caslin
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Jordan M. Dailey
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Aditya Kotha
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Jason R. Burchett
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Sydney A. Kee
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Tania D. Maldonado
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Boyang Ren
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Wei Chao
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Lin Zou
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Tamara T. Haque
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - David Straus
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - John J. Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
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48
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Meng X, Liang X, Yang S, Wu D, Wang X. A miRNA-7704/IL2RB/AKT feedback loop regulates tumorigenesis and chemoresistance in ovarian cancer. Exp Cell Res 2024; 437:114012. [PMID: 38565343 DOI: 10.1016/j.yexcr.2024.114012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/08/2024] [Accepted: 03/22/2024] [Indexed: 04/04/2024]
Abstract
Ovarian cancer is one of the most common gynecological tumors worldwide. Despite the availability of multiple treatments for ovarian cancer, its resistance to chemotherapy remains a significant challenge. miRNAs play crucial roles in the initiation and progression of cancer by affecting processes such as differentiation, proliferation, and chemoresistance. According to microarray and qPCR analyses, miR-7704 is significantly downregulated in cisplatin-resistant cells compared to parental cells. In this study, we found that miR-7704 inhibited the proliferation and promoted cisplatin sensitivity of ovarian cancer cells in vitro and in vivo. Moreover, ectopic expression of miR-7704 had the same effect as IL2RB knockdown. Further mechanistic studies revealed that miR-7704 played an inhibitory role by regulating IL2RB expression to inactivate the AKT signaling pathway. Furthermore, IL2RB reversed the miR-7704 mediated resistance to cisplatin in ovarian cancer. Based on these findings, miR-7704 and IL2RB show the potential as novel therapeutic targets for ovarian cancer.
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Affiliation(s)
- Xuan Meng
- Phase I Clinical Trial Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, China; Department of Oncology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, China
| | - Xiaoqing Liang
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Shengjie Yang
- Phase I Clinical Trial Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Dongsheng Wu
- Department of Emergency, Yantaishan Hospital, Yantai, Shandong, China
| | - Xinghe Wang
- Phase I Clinical Trial Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
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49
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Cox R, Arthur J, Burtson K. Feedback perceptions of first year medical residents: An intervention-based survey study. PLoS One 2024; 19:e0300205. [PMID: 38598479 PMCID: PMC11006118 DOI: 10.1371/journal.pone.0300205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 02/22/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Feedback in residency is a necessity for progression toward clinical competency and is included in The Accreditation Council for Graduate Medical Education (ACGME) milestones as an essential component for accreditation. PURPOSE Our study elucidates perceptions of feedback of first-year residents and aims to identify how these perceptions change after education on building expertise through deliberate practice. METHODS First-year internal medicine and neurology residents of a mid-sized university-affiliated residency program answered a five-question 5-point unipolar response scale questionnaire regarding feedback perceptions before and after attending a workshop about building expertise through effective feedback during residency orientation. Related-Samples Wilcoxon Signed Rank Test was applied for comparing pre- versus post-questionnaire data. RESULTS Of 31 first-year residents, 29 completed the pre-questionnaire for a completion rate of 93.5%, while 24 of 31 completed the post-questionnaire for a completion rate of 77.4%. Of the five questions, three improved when comparing pre and post responses to, including the questions on confidence in the ability to procure feedback (p = <0.001), the effort put into procuring feedback (p = 0.001), and frequency of seeking feedback (p = 0.002). Interest in receiving feedback and the importance of feedback remained unchanged after workshop attendance. CONCLUSION Residents should be educated on building expertise through deliberate practice and how to obtain high-quality feedback, given the emphasis and essentiality of feedback within the milestone assessment system and the core competencies of ACGME. In our study, education on these topics led to significant improvement in resident perceptions of confidence in the ability to procure feedback, effort put into procuring feedback, and frequency at which feedback would be sought.
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Affiliation(s)
- Rachel Cox
- Department of Internal Medicine, Wright Patterson AFB and Wright State University, Wright-Patterson AFB, Ohio, United States of America
| | - John Arthur
- Department of Internal Medicine, Wright Patterson AFB and Wright State University, Wright-Patterson AFB, Ohio, United States of America
| | - Kathryn Burtson
- Department of Internal Medicine, Wright Patterson AFB and Wright State University, Wright-Patterson AFB, Ohio, United States of America
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50
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Tsunada J, Wang X, Eliades SJ. Multiple processes of vocal sensory-motor interaction in primate auditory cortex. Nat Commun 2024; 15:3093. [PMID: 38600118 PMCID: PMC11006904 DOI: 10.1038/s41467-024-47510-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 04/02/2024] [Indexed: 04/12/2024] Open
Abstract
Sensory-motor interactions in the auditory system play an important role in vocal self-monitoring and control. These result from top-down corollary discharges, relaying predictions about vocal timing and acoustics. Recent evidence suggests such signals may be two distinct processes, one suppressing neural activity during vocalization and another enhancing sensitivity to sensory feedback, rather than a single mechanism. Single-neuron recordings have been unable to disambiguate due to overlap of motor signals with sensory inputs. Here, we sought to disentangle these processes in marmoset auditory cortex during production of multi-phrased 'twitter' vocalizations. Temporal responses revealed two timescales of vocal suppression: temporally-precise phasic suppression during phrases and sustained tonic suppression. Both components were present within individual neurons, however, phasic suppression presented broadly regardless of frequency tuning (gating), while tonic was selective for vocal frequencies and feedback (prediction). This suggests that auditory cortex is modulated by concurrent corollary discharges during vocalization, with different computational mechanisms.
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Affiliation(s)
- Joji Tsunada
- Auditory and Communication Systems Laboratory, Department of Otorhinolaryngology: Head and Neck Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Chinese Institute for Brain Research, Beijing, China
| | - Xiaoqin Wang
- Laboratory of Auditory Neurophysiology, Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Steven J Eliades
- Auditory and Communication Systems Laboratory, Department of Otorhinolaryngology: Head and Neck Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
- Department of Head and Neck Surgery & Communication Sciences, Duke University School of Medicine, Durham, NC, USA.
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