Dysregulation of the let-7/HMGA2 axis with methylation of the p16 promoter in myeloproliferative neoplasms

博士（医学）福島県立医科大

最大酸素摂取量と身体組成の関係からみた年少者スイマーの特性

Purposes of this study were to investigate how maximal oxygen uptake (VO_2max) relates to body weight and lean body weight in male swimmers, and to clarify characteristics of prepubertal male swimmers. 17 prepubertal male swimmers with a mean age of 11.3±0.6 years and 19 college male swimmers of 20.4±0.9 years old were measured for lean body weight by underwater-weighing method and VO_2max by flume swimming. They all were well trained swimmers. Correlation between VO_2max and lean body weight for prepubertal swimmers was found to be higher (r=0.898, p<0.001) than for college swimmers (r=0.604, p<0.01). In addition, correlation between VO_2max and body weight for prepubertal swimmers was found to be higher (r=0.825, p<0.001) than for college swimmers (r=0.588, p<0.01). It was also shown that prepubertal swimmers had a significantly smaller VO_2max per 1 kg of lean body weight than college swimmers. Therefore, it was concluded that the respiratory-cardiovascular system of prepubertal male swimmers was not matured or improved enough for VO_2max measurement even when they were well trained for their age

Cross-Country Student Perceptions about Online Medical Education during the COVID-19 Pandemic

(1) Introduction: Most educational institutions around the world have shifted from traditional face-to-face to online education amid COVID-19. This change may particularly impact medical students, whose education is heavily influenced by clinical learning experiences. Accordingly, we investigated medical students’ perceptions about positive and negative aspects of online medical education in Japan and overseas during the COVID-19 pandemic. (2) Methods: In-depth online interviews were conducted among 13 Japanese medical students and five medical students from Slovakia, Norway, and Hungary. Interviews were conducted from 23rd September to 3rd October 2020 using the snowball sampling method. Questions were focused on five main areas: Q1 the type of online education; Q2 advantages and disadvantages of online education; Q3 any changes in the relationship with teachers, friends, and family; Q4 any opinions about further improvements in online education; and Q5 any needs for affiliation with a particular university. Then thematic analysis was conducted. (3) Results: The results of the thematic analysis revealed the following four themes that represent the positive and negative aspects of online medical education; Theme 1: Timesaving and Flexibility; Theme 2: Technical problems and lack of digital skills; Theme 3: Unstandardized teaching skills; Theme 4: Lack of experience beyond medical school lectures. (4) Conclusions: While online education was found useful in terms of saving time and creating a flexible learning environment, many important drawbacks were noted such as internet and computer problems and unstandardized teaching skills, and lack of quality assurance. In addition, experiences outside the classroom such as making relationships with faculty and friends, conducting research and participating in extracurricular activities were missed, which they normally enjoy in college life

Successful management of unstable angina in a ravulizumab-treated patient with paroxysmal nocturnal hemoglobinuria

Ravulizumab is an anti-C5 antibody approved for treating paroxysmal nocturnal hemoglobinuria (PNH). In August 2019, a 77-year-old Japanese man with PNH, who had been on ravulizumab treatment for 2 years, was hospitalized for chest discomfort and malaise. Electrocardiography identified a right bundle block, and elevated serum troponin I and d-dimer suggested ischemic heart disease. Cardiac catheterization revealed severe stenosis in the left anterior descending coronary artery, and intracoronary stenting relieved his chest discomfort. The final diagnosis was unstable angina unrelated to ravulizumab, and the patient's ravulizumab treatment was uninterrupted with no significant complications of PNH. This case report highlights the importance of continuing complement inhibition therapy during acute coronary events

Real-world evidence of the impact of obesity on residual teeth in the Japanese population : A cross-sectional study

Background:Tooth loss is associated with nutritional status and significantly affects quality of life, particularly in older individuals. To date, several studies reveal that a high BMI is associated with tooth loss. However, there is a lack of large-scale studies that examined the impact of obesity on residual teeth with respect to age and tooth positions.Objective:We assessed the impact of obesity on the number and position of residual teeth by age groups using large scale of Japanese database.Methods:This was a cross-sectional study of 706150 subjects that were included in the database that combined the data from health insurance claims and health check-up, those lacking information about BMI, HbA1c level, smoking status, and the number of residual teeth were excluded. Thus, a total of 233517 aged 20-74 years were included. Subjects were classified into 4 categories based on BMI, and the number of teeth was compared between age-groups. The percentage of subjects with residual teeth in each position was compared between groups with obesity (BMI ≥25.0 kg/m2) and non-obesity. Logistic regression analysis was performed to clarify whether obesity predicts having <24 teeth.Results:Higher BMI was associated with fewer teeth over 40s (P for trend <0.0001 when <70s). Obesity was associated with the reduction of residual teeth in the maxillary; specifically, the molars were affected over the age 30. Smoking status further affected tooth loss at positions that were not affected by obesity alone. After adjusting for age, sex, smoking status, and HbA1c ≥6.5%, obesity remained an independent predictive factor for having <24 teeth (ORs: 1.35, 95% CIs: 1.30-1.40).Conclusions:We found that an increase in BMI was associated with a decrease in the number of residual teeth from younger ages independently of smoking status and diabetes in the large scale of Japanese database

Comprehensive early intervention for patients with first-episode psychosis in Japan (J-CAP): study protocol for a randomised controlled trial

<p>Abstract</p> <p>Introduction</p> <p>Comprehensive approaches for patients with psychotic symptoms play essential roles in the symptomatic and functional outcomes of patients, especially during disease onset. In Japan, the shortage of mental health services, particularly for outpatients, and community-based supports has been a major problem. The purpose of this trial is to investigate the effectiveness and affordability of 18-month comprehensive early intervention services for patients with first-episode psychosis compared with typical treatment.</p> <p>Methods</p> <p>This interventional, parallel, single-blinded (open but blinded raters trial) was effectively designed. The participants are patients with a diagnosis of F2 or F3 (International Classification of Disease, 10 th revision), with psychotic symptoms. The inclusion criteria were an age of 15-35 years, onset of psychotic symptoms within 5 years, first-episode psychosis, and residence in the catchment area of each site. Allocation will be conducted equally between case management and standard care groups. After enrollment, standard care will be provided for both groups, and community-based care to promote recovery for 18 months will be provided for the comprehensive approach group. The primary outcome will be the function domain of the global assessment of functioning scores at 18 months after enrollment. Data assessment will be performed at enrollment and 18, 36, and 60 months after enrollment. The target sample size will be 150, and registration will occur from March 1, 2011, to September 30, 2012.</p> <p>Discussion</p> <p>This trial will provide promising results about the effectiveness and cost-effectiveness of early intervention services in Japan to improve the quality and quantity of community mental health services.</p> <p>Trial registration</p> <p>This trial was registered in The University Hospital Medical Information Network Clinical Trials Registry (No. UMIN000005092).</p

An Integrated High-density Linkage Map of Soybean with RFLP, SSR, STS, and AFLP Markers Using A Single F2 Population

Soybean [Glycine max (L.) Merrill] is the most important leguminous crop in the world due to its high contents of high-quality protein and oil for human and animal consumption as well as for industrial uses. An accurate and saturated genetic linkage map of soybean is an essential tool for studies on modern soybean genomics. In order to update the linkage map of a F2 population derived from a cross between Misuzudaizu and Moshidou Gong 503 and to make it more informative and useful to the soybean genome research community, a total of 318 AFLP, 121 SSR, 108 RFLP, and 126 STS markers were newly developed and integrated into the framework of the previously described linkage map. The updated genetic map is composed of 509 RFLP, 318 SSR, 318 AFLP, 97 AFLP-derived STS, 29 BAC-end or EST-derived STS, 1 RAPD, and five morphological markers, covering a map distance of 3080 cM (Kosambi function) in 20 linkage groups (LGs). To our knowledge, this is presently the densest linkage map developed from a single F2 population in soybean. The average intermarker distance was reduced to 2.41 from 5.78 cM in the earlier version of the linkage map. Most SSR and RFLP markers were relatively evenly distributed among different LGs in contrast to the moderately clustered AFLP markers. The number of gaps of more than 25 cM was reduced to 6 from 19 in the earlier version of the linkage map. The coverage of the linkage map was extended since 17 markers were mapped beyond the distal ends of the previous linkage map. In particular, 17 markers were tagged in a 5.7 cM interval between CE47M5a and Satt100 on LG C2, where several important QTLs were clustered. This newly updated soybean linkage map will enable to streamline positional cloning of agronomically important trait locus genes, and promote the development of physical maps, genome sequencing, and other genomic research activities