bluuebunny/crossref_metadata_2025_split huggingface dataset:
Abelmoschus esculentus subfractions attenuate Aβ and tau by regulating DPP-4 and insulin resistance signals
Authors: Huang Chien-Ning , Wang Chau-Jong , Lin Chih-Li , Li Hsin-Hua , Yen An-Ting , Peng Chiung-Huei 
Published: December 2020

Abstract
Background
Insulin resistance could be associated with the development of Alzheimer disease (AD). The neuropathological hallmarks of AD are beta amyloid (Aβ) produced from sequential cleavage initiated by β-secretase and degraded by insulin degradation enzyme (IDE), as well as hyperphosphorylation of tau (p-tau). Insulin action involves the cascades of insulin receptor substrates (IRS) and phosphatidylinositol 3-kinase (PI3K), while phosphorylation of IRS-1 at ser307 (p-ser307IRS-1) hinders the response. Our previous report suggested dipeptidyl peptidase-4 (DPP-4) is crucial to insulin resistance, and the subfractions of Abelmoschus esculentus (AE), F1 and F2, attenuate the signaling. Here we aim to investigate whether AE works to reduce Aβ generation via regulating DPP4 and insulin resistance.

Methods
The subfractions F1 and F2 were prepared according to a succession of procedures. F1 was composed by quercetin glycosides and triterpene ester, and F2 contained a large amount of polysaccharides. The in vitro insulin resistance model was established by SK-N-MC cell line treated with palmitate. MTT was used to define the dose range, and thereby Western blot, ELISA, and the activity assay were used to detect the putative markers. One-way ANOVA was performed for the statistical analysis.

Results
Treatment of palmitate induced the level of p-ser307IRS-1. Both F1 and F2 effectively decrease p-ser307IRS-1, and recover the expression of p-PI3K. However, the expression of total IRS plunged with 25 μg/mL of F1, while descended steadily with 5 μg/mL of F2. As palmitate increased the levels of Aβ40 and Aβ42, both AE subfractions were effective to reduce Aβ generation of and β-secretase activity, but IDE was not altered in any treatment conditions. The expression of DPP4 was also accompanied with insulin resistance signals. Inhibition of DPP4 attenuated the activity of β-secretase and production of Aβ. Moreover, the present data revealed that both AE subfractions significantly decrease the level of p-Tau.

Conclusions
In conclusion, we demonstrated that AE would be a potential adjuvant to prevent insulin resistance and the associated pathogenesis of AD, and F2 seems more feasible to be developed.
Residents’ identification of learning moments and subsequent reflection: impact of peers, supervisors, and patients
Authors: Mordang Serge B. R. , Vanassche Eline , Smeenk Frank W. J. M. , Stassen Laurents P. S. , Könings Karen D. 
Published: December 2020

AbstractBackgroundThe clinical workplace offers residents many opportunities for learning. Reflection on workplace experiences drives learning and development because experiences potentially make residents reconsider existing knowledge, action repertoires and beliefs. As reflective learning in the workplace cannot be taken for granted, we aimed to gain a better insight into the process of why residents identify experiences as learning moments, and how residents reflect on these moments.MethodsThis study draws on semi-structured interviews with 33 medical residents. Interviews explored how residents identified learning moments and how they reflected on such moments, both in-action and on-action. Aiming for extensive explanations on the process of reflection, open-ended questions were used that built on and deepened residents’ answers. After interviews were transcribed verbatim, a within-case and cross-case analysis was conducted to build a general pattern of explanation.ResultsThe data analysis yielded understanding of the crucial role of the social context. Interactions with peers, supervisors, and patients drive reflection, because residents want to measure up to their peers, meet supervisors’ standards, and offer the best patient care. Conversely, quality and depth of reflection sometimes suffer, because residents prioritize patient care over learning. This urges them to seek immediate solutions or ask their peers or supervisor for advice, rather than reflectively deal with a learning moment themselves. Peer discussions potentially enhance deep reflection, while own supervisor involvement sometimes feels unsafe.DiscussionOur results adds to our understanding of the social-constructivist nature of reflection. We suggest that feelings of self-preservation during interactions with peers and supervisors in a highly demanding work environment shape reflection. Support from peers or supervisors helps residents to instantly deal with learning moments more easily, but it also makes them more dependent on others for learning. Since residents’ devotion to patient care obscures the reflection process, residents need more dedicated time to reflect. Moreover, to elaborate deeply on learning moments, a supportive and safe learning climate with peers and supervisors is recommended.
Factors influencing specialty choice and the effect of recall bias on findings from Irish medical graduates: a cross-sectional, longitudinal study
Authors: Cronin Frances M. , Clarke Nicholas , Hendrick Louise , Conroy Ronan , Brugha Ruairi 
Published: December 2020

Abstract
Background
Despite being a vital part of medical workforce planning and development, how medical students and graduates choose their career specialty is still not well understood. This study aimed to identify the factors medical graduates consider important influences in their choice of specialty after their first year of practice, and to test the validity of relying on respondent recall to measure changes in specialty choice.

Methods
The baseline survey was administered online to all final year students in Ireland’s six medical schools. Those who consented to follow-up (n = 483) were surveyed 18 months later (June 2018), during the final month of first year of practice.

Results
The baseline survey had a 67% (n = 483) response rate. At the follow-up survey, (n = 232, 48% response rate) the top specialty choices were: Medicine, n = 54 (26%); Surgery, n = 34 (16%); General Practice, n = 28 (13%); Anaesthesia, n = 16 (8%) and Paediatrics, n = 14 (7%). Of the 49 respondents (28%) reporting a change of specialty since baseline, 13 (27%) selected the same specialty in both surveys; of the 121 (69%) reporting no change, 22 (18%) selected a different specialty at follow-up.
Over 90% of respondents rated as ‘important or ‘very important’: ‘Own aptitude’, ‘Work-life balance’ and ‘What I really want to do’. Over 75% rated as ‘not at all’, or ‘not very important’ ‘Current financial debt’ and ‘Inclinations before medical school’.
When adjusted for sex and age, compared with Medicine, General Practice rated as more important: continuity of patient care (RRR 3.20 CI(1.59–6.41), p = 0.001); working hours/conditions (RRR 4.61 CI(1.03–20.60), p = 0.045) and a career that fit their domestic circumstances (RRR 3.19 CI(1.27–8.02), p = 0.014). Those choosing Surgery rated as less important: patient contact (RRR 0.56 CI(0.33–0.95), p = 0.033) and working hours/conditions (RRR 0.55 CI(0.31–0.96), p = 0.035).

Conclusions
The different demographic and motivational profiles by specialty choice are consistent with other studies suggesting a distinct profile for doctors intending to enter General Practice. In addition, our results suggest longitudinal study designs guard against recall bias and so provide more robust medical workforce models to inform and direct recruitment drives and interventions in future medical workforce planning.
A best-worst scaling survey of medical students’ perspective on implementing shared decision-making in China
Authors: XU Richard Huan , ZHOU Lingming , WONG Eliza Lai-Yi , WANG Dong , XIANG Guo Chun , XU Chao 
Published: December 2020

Abstract
Background
The objective of this study was to ascertain the importance rankings of factors affecting the implementation of shared decision-making (SDM) in medical students in China and determine whether these factors were consistent across the respondents’ individual characteristics.

Method
Students studying clinical medicine were recruited from three medical universities in China. A cross-sectional online survey using best-worst object scaling with a balanced incomplete block design was adopted to investigate their preference towards implementing SDM in China. Count analysis, multinomial logit analysis and mixed logit analysis were used to estimate the preference heterogeneity of the SDM factors among respondents.

Results
A total of 574 medical students completed the online survey. The three most important factors for implementing SDM were trust and respect, (providing) high-quality medical information and multi-disciplinary collaboration. The mixed logit regression model identified significant heterogeneity in SDM preferences among respondents, and sub-group analysis showed that some heterogeneities varied in respondents by sex, study programs and their experience of visiting doctors.

Conclusion
The importance rankings provide rich information for implementing SDM and facilitate the reform of education in medical schools in China. However, the heterogeneities in SDM preference need further explorations.
Vickermania gen. nov., trypanosomatids that use two joined flagella to resist midgut peristaltic flow within the fly host
Authors: Kostygov Alexei Y. , Frolov Alexander O. , Malysheva Marina N. , Ganyukova Anna I. , Chistyakova Lyudmila V. , Tashyreva Daria , Tesařová Martina , Spodareva Viktoria V. , Režnarová Jana , Macedo Diego H. , Butenko Anzhelika , d’Avila-Levy Claudia M. , Lukeš Julius , Yurchenko Vyacheslav 
Published: December 2020

Abstract
Background
The family Trypanosomatidae encompasses parasitic flagellates, some of which cause serious vector-transmitted diseases of humans and domestic animals. However, insect-restricted parasites represent the ancestral and most diverse group within the family. They display a range of unusual features and their study can provide insights into the biology of human pathogens. Here we describe Vickermania, a new genus of fly midgut-dwelling parasites that bear two flagella in contrast to other trypanosomatids, which are unambiguously uniflagellate.

Results
Vickermania has an odd cell cycle, in which shortly after the division the uniflagellate cell starts growing a new flagellum attached to the old one and preserves their contact until the late cytokinesis. The flagella connect to each other throughout their whole length and carry a peculiar seizing structure with a paddle-like apex and two lateral extensions at their tip. In contrast to typical trypanosomatids, which attach to the insect host’s intestinal wall, Vickermania is separated from it by a continuous peritrophic membrane and resides freely in the fly midgut lumen.

Conclusions
We propose that Vickermania developed a survival strategy that relies on constant movement preventing discharge from the host gut due to intestinal peristalsis. Since these parasites cannot attach to the midgut wall, they were forced to shorten the period of impaired motility when two separate flagella in dividing cells interfere with each other. The connection between the flagella ensures their coordinate movement until the separation of the daughter cells. We propose that Trypanosoma brucei, a severe human pathogen, during its development in the tsetse fly midgut faces the same conditions and follows the same strategy as Vickermania by employing an analogous adaptation, the flagellar connector.
Genetically proxied milk consumption and risk of colorectal, bladder, breast, and prostate cancer: a two-sample Mendelian randomization study
Authors: Larsson Susanna C. , Mason Amy M. , Kar Siddhartha , Vithayathil Mathew , Carter Paul , Baron John A. , Michaëlsson Karl , Burgess Stephen 
Published: December 2020

AbstractBackgroundObservational studies have shown that milk consumption is inversely associated with colorectal, bladder, and breast cancer risk, but positively associated with prostate cancer. However, whether the associations reflect causality remains debatable. We investigated the potential causal associations of milk consumption with the risk of colorectal, bladder, breast, and prostate cancer using a genetic variant near theLCTgene as proxy for milk consumption.MethodsWe obtained genetic association estimates for cancer from the UK Biobank (n = 367,643 women and men), FinnGen consortium (n = 135,638 women and men), Breast Cancer Association Consortium (n = 228,951 women), and Prostate Cancer Association Group to Investigate Cancer Associated Alterations in the Genome consortium (n = 140,254 men). Milk consumption was proxied by a genetic variant (rs4988235 or rs182549) upstream of the gene encoding lactase, which catalyzes the breakdown of lactose.ResultsGenetically proxied milk consumption was associated with a reduced risk of colorectal cancer. The odds ratio (OR) for each additional milk intake increasing allele was 0.95 (95% confidence interval [CI] 0.91–0.99;P = 0.009). There was no overall association of genetically predicted milk consumption with bladder (OR 0.99; 95% CI 0.94–1.05;P = 0.836), breast (OR 1.01; 95% CI 1.00–1.02;P = 0.113), and prostate cancer (OR 1.01; 95% CI 0.99–1.02;P = 0.389), but a positive association with prostate cancer was observed in the FinnGen consortium (OR 1.07; 95% CI 1.01–1.13;P = 0.026).ConclusionsOur findings strengthen the evidence for a protective role of milk consumption on colorectal cancer risk. There was no or limited evidence that milk consumption affects the risk of bladder, breast, and prostate cancer.
A polymicrobial biofilm model for testing the antimicrobial potential of a nisin-biogel for canine periodontal disease control
Authors: Cunha Eva , Rebelo Sandra , Carneiro Carla , Tavares Luís , Carreira Luís Miguel , Oliveira Manuela 
Published: December 2020

Abstract
Background
Periodontal disease (PD) in dogs is prompted by the establishment of a polymicrobial biofilm at the tooth surface and a subsequent host inflammatory response. Several strategies may be used for PD control, including dental hygiene home care procedures, like toothbrushing, special diet and chew toys that reduce dental plaque accumulation, or professional periodontal treatments. Aiming at PD control, a biogel composed by nisin and guar-gum was previously developed. This work aimed to establish an in vitro model mimicking the PD-associated biofilms and to evaluate the nisin-biogel inhibitory activity against this polymicrobial biofilm by determining its Minimum Biofilm Inhibitory (MBIC) and Eradication Concentrations (MBEC). Bacterial species tested included Neisseria zoodegmatis CCUG 52598T, Corynebacterium canis CCUG 58627T, Porphyromonas cangingivalis DSMZ VPB 4874, Peptostreptococcus canis CCUG 57081 and an Enterococcus faecalis isolate belonging to a collection of oral bacteria obtained from dogs with PD. Before establishing the biofilm, coaggregation between species was determined by optical density measurement after 2 and 24 hours. Nisin-biogel MBIC and MBEC values regarding the polymicrobial biofilm were determined using a modified version of the Calgary biofilm pin lid device, after confirming the presence of the five bacterial species by Fluorescent In Situ Hybridization.

Results
Only 40% of the bacterial dual suspensions were able to coaggregate at 2 hours, but all species tested exhibited a coaggregation percentage higher than 30% at 24 hours. It was possible to establish a 48 h polymicrobial biofilm model composed by the five bacterial species selected. This model was used to determine nisin-biogel MBIC (26.39 ± 5.89 µg/mL) and MBEC (62.5 ± 27.73 µg/mL) values.

Conclusions
Our results showed that the nisin-biogel can inhibit and eradicate PD multispecies biofilms. As this in vitro model mimics an in vivo periodontal polymicrobial biofilm, our results reinforce the potential of the application of nisin-biogel for canine PD control.
Proceedings from the CIHLMU occupational safety and health symposium 2019 “Protecting workers’ health: global challenges and opportunities in work-related respiratory diseases”
Authors: Gidi Netsanet Workneh , Suraya Anna , Mutayoba Beatrice , Espinoza Bernarda , Meggi Bindiya , Sabi Issa , Noller Jessica Michelle Guggenbuehl , Schmieding Kristina , Tukhanova Nur , Manhart Martina , Heiber Arlett 
Published: December 2020

AbstractThe international CIHLMU Occupational Safety and Health Symposium 2019 was held on 16th March, 2019 at the Ludwig-Maximilians-Universität Munich, Germany. About 60 participants from around the world representing occupational health and safety professionals, students, instructors from several institutions in Germany and abroad, attended the symposium.The main objective of the symposium was to create awareness on global challenges and opportunities in work-related respiratory diseases. One keynote lecture and six presentations were made. While the keynote lecture addressed issues on occupational diseases in the twenty-first century, the six presentations were centered on: Prevention and control of work-related respiratory diseases, considerations; Occupational health and safety in Mining: Respiratory diseases; The prevention of TB among health workers is our collective responsibility; Compensation and prevention of occupational diseases and discussion on how artificial intelligence can support them: Overview of international approaches; Work-related Asthma: Evidence from high-income countries; and The role of imaging in the diagnosis of work- related respiratory diseases. A panel discussion was conducted following the presentations on the importance and challenges of data acquisition which is needed to have a realistic picture of the occupational safety and health status of workers at different levels. The current summary is an attempt to share the proceedings of the symposium.
Impact of diabetes mellitus on the early-phase arterial healing after drug-eluting stent implantation
Authors: Ishihara Takayuki , Sotomi Yohei , Tsujimura Takuya , Iida Osamu , Kobayashi Tomoaki , Hamanaka Yuma , Omatsu Takashi , Sakata Yasushi , Higuchi Yoshiharu , Mano Toshiaki 
Published: December 2020

Abstract
Background
Early arterial healing after drug-eluting stent (DES) implantation may enable short dual-antiplatelet therapy (DAPT) strategy. The impact of diabetes mellitus (DM) on this healing has not been elucidated. We used coronary angioscopy (CAS) to compare intravascular status of DM and non-DM patients in the early phase after DES implantation.

Methods
This study was a multicenter retrospective observational study. We analyzed CAS findings of 337 lesions from 270 patients evaluated 3–5 months after DES implantation. We divided the lesion into two groups: DM (n = 149) and non-DM (n = 188). We assessed neointimal coverage (NIC) grades (dominant, maximum and minimum), thrombus adhesion and maximum yellow color grade. NIC was graded as follows: grade 0, stent struts were not covered; grade 1, stent struts were covered by thin layer; grade 2, stent struts were buried under neointima. Yellow color was graded as grade 0, white; grade 1, light yellow; grade 2, yellow; grade 3, intensive yellow.

Results
Minimum NIC grade was significantly lower in DM than in non-DM groups (p = 0.002), whereas dominant and maximum NIC grades were similar between them (p = 0.59 and p = 0.94, respectively), as were thrombus adhesion (44.3% vs. 38.8%, p = 0.32) and maximum yellow color grade (p = 0.78). A multivariate analysis demonstrated that DM was an independent predictor of minimum NIC of grade 0 (odds ratio: 2.14, 95% confidence interval: 1.19–3.86, p = 0.011).

Conclusions
DM patients showed more uncovered struts than non-DM patients 3–5 months after DES implantation, suggesting that the recent ultra-short DAPT strategy might not be easily applied to DM patients.
Assessing immune infiltration and the tumor microenvironment for the diagnosis and prognosis of sarcoma
Authors: Zhu Naiqiang , Hou Jingyi 
Published: December 2020

AbstractBackgroundSarcomas, cancers originating from mesenchymal cells, are comprehensive tumors with poor prognoses, yet their tumorigenic mechanisms are largely unknown. In this study, we characterize infiltrating immune cells and analyze immune scores to identify the molecular mechanism of immunologic response to sarcomas.MethodThe “CIBERSORT” algorithm was used to calculate the amount of L22 immune cell infiltration in sarcomas. Then, the “ESTIMATE” algorithm was used to assess the “Estimate,” “Immune,” and “Stromal” scores. Weighted gene co-expression network analysis (WGCNA) was utilized to identify the significant module related to the immune therapeutic target. Gene ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed using the “clusterProfiler” package in R for annotation and visualization.ResultsMacrophages were the most common immune cells infiltrating sarcomas. The number of CD8 T cells was negatively associated with that of M0 and M2 macrophages, and positively associated with M macrophages in sarcomas samples. The clinical parameters (disease type, gender) significantly increased with higher Estimate, Immune, and Stromal scores, and with a better prognosis. The blue module was significantly associated with CD8 T cells. Functional enrichment analysis showed that the blue module was mainly involved in chemokine signaling and the PI3K-Akt signaling pathway.CD48, P2RY10andRASAL3were identified and validated at the protein level.ConclusionBased on the immune cell infiltration and immune microenvironment, three key genes were identified, thus presenting novel molecular mechanisms of sarcoma metastasis.