Mapping scientific research on the negative aspects of the medical school learning environment

SUMMARY OBJECTIVE: We sought to understand the landscape of published articles regarding medical schools' learning environments (LE) worldwide, with an explicit focus on potentially harmful aspects of the LE as an effort to identify areas specifically in need of remediation or intervention that could prevent future unprofessional behaviors, burnout, violence and mistreatment among students and physicians. METHODS: A bibliometric analysis was conducted in six electronic databases (PubMed/Medline, Web of Science, Cochrane Library, SCOPUS, ERIC-ProQuest, and PsycINFO) up to December 31, 2016, including 12 themes: learning environment - general, hidden curriculum (harmful), unethical behaviors, bullying/hazing, violence, sexual discrimination, homophobia, racism, social discrimination, minorities discrimination, professional misconduct, and other negative aspects. RESULTS: Of the 9,338 articles found, 710 met the inclusion criteria. The most common themes were general LE (233 articles), unprofessional behaviors (91 articles), and sexual discrimination (80 articles). Approximately 80% of articles were published in the 21st century. CONCLUSION: There is a definite increase in scientific articles on negative aspects of the medical school LE in high-quality journals, especially in the 21st century. However, more studies are needed to investigate negative LE aspects with greater attention to experimental, longitudinal, and cross-cultural study designs.

RESUMO OBJETIVO: Buscou-se entender o panorama dos artigos publicados sobre os ambientes de aprendizagem (AA) das escolas médicas em todo o mundo, com um foco explícito nos aspectos potencialmente negativos do AA como um esforço para identificar áreas especificamente necessitadas de remediação ou intervenção que poderiam evitar futuros comportamentos não profissionais, violência e maus-tratos entre estudantes e médicos. MÉTODOS: Foi realizada uma análise bibliométrica em seis bases de dados eletrônicas (PubMed / Medline, Web of Science, Biblioteca Cochrane, SCOPUS, ERIC-ProQuest e PsycINFO) até 31 de dezembro de 2016, incluindo 12 temas: ambiente de aprendizagem - geral, currículo oculto (negativo), comportamentos antiéticos, bullying/trote, violência, discriminação sexual, homofobia, racismo, discriminação social, discriminação de minorias, má conduta profissional e "outros" aspectos negativos. RESULTADOS: Dos 9.338 artigos encontrados, 710 preencheram os critérios de inclusão. Os temas mais comuns foram LE geral (233 artigos), comportamentos não profissionais (91 artigos) e discriminação sexual (80 artigos). Aproximadamente 80% dos artigos foram publicados no século XXI. CONCLUSÃO: Há um claro aumento em artigos científicos sobre aspectos negativos da escola de medicina LE em periódicos de alta qualidade, especialmente no século XXI. No entanto, mais estudos são necessários para investigar aspectos negativos do LE com maior atenção aos desenhos de estudos experimentais, longitudinais e transculturais.

Mapping the scientific research on the negative aspects of the medical school learning environment

SUMMARY Objective: We sought to understand the landscape of published articles regarding medical schools' learning environments (LE) worldwide, with an explicit focus on potentially negative aspects of the LE as an effort to identify areas specifically in need of remediation or intervention that could prevent future unprofessional behaviours, burnout, violence and mistreatment among students and physicians. Methods: A bibliometric analysis was conducted in six electronic databases (PubMed/Medline, Web of Science, Cochrane Library, SCOPUS, ERIC-ProQuest and PsycINFO) through December 31, 2016, including 12 themes: learning environment - general, hidden curriculum (negative), unethical behaviours, bullying/hazing, violence, sexual discrimination, homophobia, racism, social discrimination, minorities' discrimination, professional misconduct, and "other" negative aspects. Results: Of 9,338 articles found, 710 met the inclusion criteria. The most common themes were general LE (233 articles), unprofessional behaviours (91 articles), and sexual discrimination (80 articles). Approximately 80% of articles were published in the 21st century. Conclusion: There is a clear increase in scientific articles on negative aspects of the medical school LE in high-quality journals, especially in the 21st century. However, more studies are needed to investigate negative LE aspects with greater attention paid to experimental, longitudinal, and cross-cultural study designs.

RESUMO OBJETIVO: Buscou-se entender o panorama dos artigos publicados sobre os ambientes de aprendizagem (AA) das escolas médicas em todo o mundo, com um foco explícito nos aspectos potencialmente negativos do AA como um esforço para identificar áreas específicamente necessitadas de remediação ou intervenção que poderiam evitar futuros comportamentos não profissionais, violência e maus-tratos entre estudantes e médicos. Métodos: Foi realizada uma análise bibliométrica em seis bases de dados eletrônicas (PubMed/Medline, Web of Science, Biblioteca Cochrane, Scopus, Eric-ProQuest e PsycInfo) até 31 de dezembro de 2016, incluindo 12 temas: ambiente de aprendizagem - geral, currículo oculto (negativo), comportamentos antiéticos, bullying/trote, violência, discriminação sexual, homofobia, racismo, discriminação social, discriminação de minorias, má conduta profissional e "outros" aspectos negativos. Resultados: Dos 9.338 artigos encontrados, 710 preencheram os critérios de inclusão. Os temas mais comuns foram LE geral (233 artigos), comportamentos não profissionais (91 artigos) e discriminação sexual (80 artigos). Aproximadamente 80% dos artigos foram publicados no século XXI. Conclusão: Há um claro aumento em artigos científicos sobre aspectos negativos da escola de medicina LE em periódicos de alta qualidade, especialmente no século XXI. No entanto, mais estudos são necessários para investigar aspectos negativos do LE com maior atenção aos desenhos de estudos experimentais, longitudinais e transculturais.

Flow cytometry assessment of graft-infiltrating lymphocytes can accurately identify acute rejection in kidney transplants.

BACKGROUND: Previously, we have reported that flow cytometry analysis of fine-needle aspirates can accurately predict rejection in kidney transplants treated with cyclosporine-azathioprine-prednisolone. In this study, we examined this technique's accuracy using current immunosuppression. METHODS: Kidney transplant recipients were treated with calcineurin inhibitors, mycophenolate mofetil, and prednisolone: 92 remained rejection-free - Group I - and 37 developed acute rejection - Group II. An allograft aspiration specimen and peripheral blood were collected from Group I on post-transplant day 7 and from Group II on the day of clinical rejection. RESULTS: Significant changes were seen in both aspiration and peripheral blood samples in several T cell subsets when comparing Groups I and II. A sensitivity of 94.6%, specificity of 85%, and AUC = 0.966 were observed through combining CD8DR with CD3CD69 values from aspiration specimen; the corresponding AUC in peripheral blood was 0.847. Irreversible rejections displayed a significantly higher activation score (p = 0.024). CONCLUSIONS: Flow cytometry analysis of aspiration specimen achieved high diagnostic performance in renal transplants through studying CD8DR and CD3CD69 under current immunosuppressive therapy. Peripheral blood analysis, although not significant, showed the same trend. The activation score anticipated the irreversibility of rejection. The data suggest this test, through an easily tolerated technique, merits further diagnostic use.

Estradiol receptor binding to the epithelium of uterine lumen and glands: region- and time-related changes during preimplantation and periimplantation periods studied by autoradiography.

The presence and changes of estradiol nuclear binding and related functions in uterine luminal and glandular epithelium were studied before and after blastocyst implantation using receptor autoradiography with (3)H-estradiol-17beta in association with (3)H-thymidine incorporation and immunocytochemical binding of antibody to estrogen receptor ER-alpha. (3)H-estradiol nuclear binding is present but variable during days 1.5-7.5 of pregnancy. Sites of strong nuclear binding of (3)H-estradiol exhibit strong immunocytochemical staining with ER-alpha antibody. Qualitative and quantitative evaluation of autoradiograms reveal that there is a general increase of nuclear (3)H-estradiol binding during the first 3 days after fertilization in both luminal and glandular epithelium. The binding of estradiol is stronger in glandular epithelium from day 2.5 to day 7.5, paralleled by a rise in (3)H-thymidine incorporation on day 2.5. By comparison, in the epithelium of the uterine lumen (3)H-estradiol nuclear binding is low, but relatively high in epithelial cells at lateral branching of the lumen where the increase in (3)H-estradiol binding corresponds to an increased labeling index with (3)H-thymidine. A highly differentiated binding of (3)H-estradiol to luminal and glandular epithelium was demonstrated with region- and time-specific changes of related effects on cell proliferation, differentiation, and secretion, probably involving involution and remodeling. The strong (3)H-estradiol binding to glandular epithelium suggests that estradiol exerts pronounced effects on glandular activities in the periimplantation period.

Mitotracker green is a P-glycoprotein substrate.

P-glycoprotein has a widespread expression on normal tissues. The protein has also been strongly associated with the multidrug resistance phenotype (MDR) on tumor cells. The employment of flow cytometry and confocal microscopy has contributed to the discovery and application of new particular fluorescent dyes. Nevertheless, several studies are being performed in different cellular types neglecting the expression/activity of MDR proteins. Because many fluorochromes have been reported as P-glycoprotein substrates, an especial attention must be given to the properties of new dyes in the presence of MDR proteins. Flow cytometric analyzes of Mitotracker Green (MTG) fluorescence profile were performed in a human erythroleukemic cell line and its resistant counterpart. In this report we demonstrated that MTG, a probe used to evaluate the mitochondrial mass, is a P-glycoprotein substrate and its staining profile is dependent on the activity of this protein. In vitro studies on a human erythroleukemic cell line and its resistant counterpart revealed that MDR modulators (Cyclosporin A, Verapamil, and Trifluoperazine) alter the MTG fluorescence pattern on a resistant cell line. The findings suggest that attention should be given to the expression of P-glycoprotein when performing an evaluation of mitochondria properties with MTG.

Compared to mycophenolate mofetil, rapamycin induces significant changes on growth factors and growth factor receptors in the early days post-kidney transplantation.

BACKGROUND: The new immunosuppressive drug Rapamycin (Rapa) is endowed with a mechanism of action that is distinct from that of calcineurin inhibitors. It has been claimed that Rapa does not significantly modulate either the cytokine expression or the transcription of several growth factors in mitogen-activated T cells. Previously, we reported that fine-needle aspiration biopsy (FNAB) sample cultures synthesize a large array of cytokines, and some of them may be powerful predictors of acute rejection in renal transplants. We hypothesized that Rapa may induce significant changes on cytokine production by FNAB sample cultures and on serum cytokine receptors when compared to other immunosuppressive drugs. METHODS: Kidney transplants treated with CsA-Rapa-Pred (Rapa group) were compared with transplants treated with CsA-mycophenolate mofetil-Pred (MMF group). They were studied on day 7 posttransplantation, and they remained rejection free for at least the first 6 months. FNAB samples were cultured and the supernatants were collected at 48 hr of incubation and analyzed by ELISA for interleukin 1 receptor antagonist (IL-1ra), IL-2, IL-6, IL-10, IL-18, monocyte chemotactic protein 1 (MCP-1), soluble tumor necrosis factor I, and transforming growth factor (TGF)-beta(1). The soluble receptors for IL-1, IL-2, IL-6, and tumor necrosis factor alpha, together with IL-2 and IL-18 were also measured in serum. RESULTS: Significant differences were observed when comparing Rapa with the MMF group. IL-18 and TGF-beta(1) synthesis were up-regulated, whereas IL-6 and MCP-1 were down-regulated in FNAB sample cultures. The Rapa group showed a significant down-regulation of each cytokine receptor and of IL-2 in serum. CONCLUSIONS: Rapa was associated with a decreased synthesis of primarily monocyte-derived cytokines and enhanced production of TGF-beta(1), which in an appropriate cytokine milieu may promote allograft tolerance. The down-regulation of cytokine receptors and IL-2 may be associated with a depressed immune response towards the kidney allograft.