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Human cognition is reflected in gaze behavior, which involves eye movements to fixate or shift focus between areas. In natural interactions, gaze behavior serves two functions: signal transmission and information gathering. While expert gaze as a tool for gathering information has been studied, its underlying cognitive processes remain insufficiently explored. This study investigated differences in gaze behavior and cognition between expert physicians and novice medical students during a simulated medical interview with a simulated patient, drawing implications for medical education. This study employed an exploratory sequential mixed methods design. During the simulated medical interview, participants’ gaze behavior was measured across five areas: the patient’s eyes, face, body trunk, medical chart, and medical questionnaire. A hierarchical Bayesian model analyzed differences in gaze behavior between expert physicians and novice medical students. Then, a semi-structured interview was conducted with participants to discern their perceptions during their gaze behavior; their recorded gaze behavior was presented to them, and analyzed using a qualitative descriptive approach. Model analyses indicated that experts looked at the simulated patient’s eyes less frequently compared to novices during the simulated medical interview. Expert physicians stated that because of the potential for discomfort, looking at the patient’s eyes was less frequent, despite its importance for obtaining diagnostic findings. Conversely, novice medical students did not provide narratives for obtaining such findings, but increased the number of times they did so to improve patient satisfaction. This association between different perceptions of gaze behavior may lead to new approaches in medical education. This study highlights the importance of understanding gaze behavior in the context of medical education and suggests that different motivations underlie the gaze behavior of expert physicians and novice medical students. Incorporating training in effective gaze behavior may improve the quality of patient care and medical students’ learning outcomes.

Green tea, a widely consumed beverage in Asia, contains green tea catechins effective against obesity, especially epigallocatechin-3- O -gallate (EGCG), but must be consumed in an impractically huge amount daily to elicit its biological effect. Meanwhile, citrus polyphenols have various physiological effects that could enhance EGCG functionality. Here we investigated the antiobesity effect of a combination of EGCG and α-glucosyl hesperidin, a citrus polyphenol, at doses that have not been previously reported to exert antiobesity effects by themselves in any clinical trial. In a randomized, placebo-controlled, double-blinded, and parallel-group-designed clinical trial, 60 healthy Japanese males and females aged 30–75 years consumed green tea combined with α-glucosyl hesperidin (GT-gH), which contained 178 mg α-glucosyl hesperidin and 146 mg EGCG, for 12 weeks. Physical, hematological, blood biochemical, and urine examinations showed that GT-gH is safe to use. At week 12, GT-gH prevented weight gain and reduced body mass index (BMI) compared with the placebo. Especially in those aged < 50 years, triglyceride and body fat percentage decreased at week 6, visceral fat level and body fat percentage decreased at week 12; body weight, BMI, and blood LDL/HDL ratio also decreased. In conclusion, taking GT-gH prevents weight gain, and the antiobesity effect of GT-gH was more pronounced in people aged < 50 years.

Introduction The prevalence and mortality rates of type 2 diabetes mellitus (T2DM) are increasing, making it a significant public health concern. Effective self-management of T2DM requires external factors, such as medical interventions and social support, and internal factors, including self-efficacy. However, during humanitarian emergencies, such as the COVID-19 pandemic, healthcare system disruptions limit external factors, making internal factors even more critical. Nonetheless, existing reviews have primarily focused on external factors and clinical outcomes during the pandemic, with no comprehensive review examining internal factors. Therefore, this review aims to systematically synthesize evidence on the internal factors supporting T2DM self-management during the COVID-19 pandemic and identify research gaps. Methods This scoping review follows the Joanna Briggs Institute guidelines and is conducted according to the PRISMA-P framework. A comprehensive search strategy will be employed to systematically explore multiple databases, including PubMed (MEDLINE), CINAHL, Web of Science, Scopus, ERIC, PsycINFO, and the Cochrane Library, as well as gray literature platforms, such as Google, Google Scholar, and Semantic Scholar. The search will include both published and gray literature without language restrictions. Studies that utilize quantitative and qualitative methodologies will also be included. Two independent reviewers will screen titles, abstracts, and full texts for eligibility, and discrepancies will be resolved through discussion or consultation with a third reviewer. The outcomes related to the internal factors contributing to the improvement of self-management among T2DM patients will be extracted and summarized. The findings will be presented descriptively and in tabular form, emphasizing key insights and identifying research gaps in the literature. Discussion The findings will be actively disseminated through academic conferences and peer-reviewed journals to provide valuable insights into the internal factors that contribute to the improvement of self-management in T2DM patients. These results are expected to contribute to the development of innovative strategies for sustaining and improving self-management in T2DM patients during future humanitarian emergencies and major public health challenges.

The colonization of land by plants was a key event in the evolution of life. Here we report the draft genome sequence of the filamentous terrestrial alga Klebsormidium flaccidum (Division Charophyta, Order Klebsormidiales) to elucidate the early transition step from aquatic algae to land plants. Comparison of the genome sequence with that of other algae and land plants demonstrate that K. flaccidum acquired many genes specific to land plants. We demonstrate that K. flaccidum indeed produces several plant hormones and homologues of some of the signalling intermediates required for hormone actions in higher plants. The K. flaccidum genome also encodes a primitive system to protect against the harmful effects of high-intensity light. The presence of these plant-related systems in K. flaccidum suggests that, during evolution, this alga acquired the fundamental machinery required for adaptation to terrestrial environments. Plant colonization of land is an important evolutionary event. Here, the authors sequence the genome of a filamentous terrestrial alga and, through a comparative analysis with related algae and land plant species, provide insight into how aquatic algae adapted to terrestrial environments.

Many evaluation tools for predicting human absorption are well-known for using cultured cell lines such as Caco-2, MDCK, and so on. Since the combinatorial chemistry and high throughput screening system, pharmacological assay, and pharmaceutical profiling assay are mainstays of drug development, PAMPA has been used to evaluate human drug absorption. In addition, cultured cell lines from iPS cells have been attracting attention because they morphologically resemble human intestinal tissues. In this review, we used human intestinal tissues to estimate human intestinal absorption and metabolism. The Ussing chamber uses human intestinal tissues to directly assay a drug candidate’s permeability and determine the electrophysiological parameters such as potential differences (PD), short circuit current (Isc), and resistance (R). Thus, it is an attractive tool for elucidating human intestinal permeability and metabolism. We have presented a novel prediction method for intestinal absorption and metabolism by utilizing a mini-Ussing chamber using human intestinal tissues and animal intestinal tissues, based on the transport index (TI). The TI value was calculated by taking the change in drug concentrations on the apical side due to precipitation and the total amounts accumulated in the tissue (Tcorr) and transported to the basal side (Xcorr). The drug absorbability in rank order, as well as the fraction of dose absorbed (Fa) in humans, was predicted, and the intestinal metabolism of dogs and rats was also predicted, although it was not quantitative. However, the metabolites formation index (MFI) values, which are included in the TI values, can predict the evaluation of intestinal metabolism and absorption by using ketoconazole. Therefore, the mini-Ussing chamber, equipped with human and animal intestinal tissues, would be an ultimate method to predict intestinal absorption and metabolism simultaneously.

Virtual patients have been increasingly utilized in medical education to develop empathy in a structured and scalable manner. Compared with traditional methods such as clinical practice and standardized patients, virtual patients can offer reproducible, resource-efficient learning experiences. This scoping review maps the research on virtual patient-based interventions designed to foster empathy in medical students. It seeks to identify existing research gaps, including conceptual definitions of empathy, scenario design, instructional strategies, assessment methods, and outcome measures. The Joanna Briggs Institute's scoping review methodology was followed, and the PRISMA-ScR guidelines for reporting were used. A comprehensive search was conducted in PubMed, CINAHL, ERIC, Web of Science, Scopus, and the Cochrane Library. Two independent reviewers screened all titles, abstracts, and full texts; a third reviewer resolved any discrepancies. Findings were presented narratively and in tabular form to highlight key insights and research gaps. Eighteen studies involving 1,920 medical students were included. The most common study design was single-arm pre-post pilot studies (  = 4, 21.1%), followed by randomized controlled trials (  = 2, 10.5%) and mixed-methods designs (  = 2, 10.5%). Five research gaps were identified: 1) lack of explicit definitions of empathy, 2) limited diversity in clinical scenarios, 3) absence of repeated virtual patient interventions, 4) limitations in assessment methods, and 5) insufficient evidence on the sustained outcomes of empathy. These findings offer important insights into the current state of medical education, where standardized curricula for empathy training remain underdeveloped. Future efforts should address these challenges by integrating virtual patients into instructional designs that effectively foster empathy in medical students. This review provides a foundation for developing and implementing educational programs that meet the needs of students seeking to enhance their empathic abilities and contribute to improved patient outcomes and prevent clinician burnout.

Introduction Empathy is a crucial skill that enhances the quality of patient care, reduces burnout among healthcare professionals, and fosters professionalism in medical students. Clinical practice and standardized patient-based education provide opportunities to enhance empathy, but a lack of consistency and reproducibility as well as significant dependency on resources are impediments. The COVID-19 pandemic has further restricted these opportunities, highlighting the need for alternative approaches. Virtual patients through standardized scenarios ensure consistency and reproducibility while offering safe, flexible, and repetitive learning opportunities unconstrained by time or location. Empathy education using virtual patients could serve as a temporary alternative during the COVID-19 pandemic and address the limitations of traditional face-to-face learning methods. This review aims to comprehensively map existing literature on the use of virtual patients in empathy education and identify research gaps. Methods This scoping review will follow the Joanna Briggs Institute’s guidelines and be reported according to PRISMA-P. The search strategy includes a comprehensive search across databases such as PubMed (MEDLINE), CINAHL, Web of Science, Scopus, ERIC, Google, Google Scholar, and Semantic Scholar, covering both published and gray literature without language restrictions. Both quantitative and qualitative studies will be included. Two independent researchers will screen all titles/abstracts and full texts for eligibility. Data will be extracted to summarize definitions of empathy, characteristics of virtual patient scenarios, and methods for measuring their impact on empathy development. Results will be presented in narrative and tabular formats to highlight key findings and research gaps. Discussion As this review analyzes existing literature, ethical approval is not required. Findings will be actively disseminated through academic conferences and peer-reviewed publications, providing educators and researchers with valuable insights into the potential of virtual patients to enhance empathy in medical education. This study goes beyond the mere synthesis of academic knowledge by contributing to the advancement of medical education and clinical practice by clarifying virtual patient scenario design and evaluation methods in empathy education. The findings provide a critical foundation for our ongoing development of a medical education platform aimed at enhancing empathy through the use of virtual patients.

Background Social trust in medical students is trust in the cluster of medical students and not individual medical students. Social trust in medical students seems critical in clinical practice since citizens often face unknown medical students for the first time. However, most previous research has focused on interpersonal trust in particular medical professions, and social trust in medical students has not been addressed sufficiently. In social science, the Salient Value Similarity model has demonstrated that the value similarity between professionals and citizens is associated with social trust. This research aimed to explore the relationship between social trust in medical students and the perception of value similarity. This study also aimed to determine whether the information of medical students strengthens social trust in them. Methods We conducted a cross-sectional study to investigate how the perception of value similarity affects social trust. The participants answered the social trust questionnaires before and after reading a brief summary of the medical education curriculum and certification via the internet in Japan. The model structure of social trust in medical students, including the perception of value similarity, was investigated using SEM. A paired t -test was used to examine the effect of informing citizens about the knowledge, skills, and professionalism requirements of students attending medical school on social trust by reading the brief summary. Results The study included 658 participants, who all answered a web questionnaire. Social trust in medical students was associated with the perception of ability and value similarity. Social trust in medical students, the perception of ability, and value similarity were improved by information about medical students. Conclusions The perception of ability and value similarity seem to affect social trust in medical students. Information on medical education regarding the knowledge, skills, and professionalism of medical students may improve social trust in these students. Further research is required to sophisticate the model of social trust in medical students by exploring social trust in the medical students’ supervisors in clinical settings.

The least absolute shrinkage and selection operator (lasso) and principal component regression (PCR) are popular methods of estimating traits from high-dimensional omics data, such as transcriptomes. The prediction accuracy of these estimation methods is highly dependent on the covariance structure, which is characterized by gene regulation networks. However, the manner in which the structure of a gene regulation network together with the sample size affects prediction accuracy has not yet been sufficiently investigated. In this study, Monte Carlo simulations are conducted to investigate the prediction accuracy for several network structures under various sample sizes. When the gene regulation network is a random graph, a sufficiently large number of observations are required to ensure good prediction accuracy with the lasso. The PCR provided poor prediction accuracy regardless of the sample size. However, a real gene regulation network is likely to exhibit a scale-free structure. In such cases, the simulation indicates that a relatively small number of observations, such as N = 300 , is sufficient to allow the accurate prediction of traits from a transcriptome with the lasso.

Background Controversy exists over the preferred technique of preoperative biliary drainage (PBD) in patients with hilar cholangiocarcinoma (HCA). The goal of this retrospective study was to identify the preferred technique of PBD for HCA. Methods A total of 128 consecutive patients with HCA diagnosed between September 1999 and December 2009 who underwent PBD were included in this study. The study compared outcomes of endoscopic nasobiliary drainage (ENBD), endoscopic biliary stenting (EBS), and percutaneous transhepatic biliary drainage (PTBD) in patients with HCA. Results There were no significant differences in preoperative laboratory data, rates of major hepatectomy, or decompression periods among the 3 groups. Complications were significantly more frequent in the EBS group compared with either the ENBD or PTBD group (p < 0.05). Drainage tube occlusion with cholangitis was significantly more common in the EBS group compared with either the ENBD or PTBD group (p < 0.0001). Patients in the PTBD group experienced serious complications including vascular injury (8%) and cancer dissemination (4%). Patients in the ENBD and EBS groups had mild post-endoscopic retrograde cholangiopancreatography pancreatitis (5%). Conversion procedures were significantly more common in the EBS group compared with the ENBD and PTBD groups (p < 0.05). There was no significant difference in postsurgical morbidity or mortality among the 3 groups. Conclusions Drainage tube occlusion with cholangitis was a frequent complication associated with EBS. PTBD was associated with serious complications such as vascular injury and cancer dissemination. ENBD was found to be the most suitable method for initial PBD management in patients with HCA.