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Arazi H, Poursardar M, Taati B, Suzuki K. Does regular resistance exercise improve resting and intradialytic pain and haemodynamic measures in sedentary chronic haemodialysis women? COMPARATIVE EXERCISE PHYSIOLOGY 2021. [DOI: 10.3920/cep200057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Pain is one of the major problems in haemodialysis patients. Regular resistance exercise (RE), as an effective lifestyle modification, may play a role in reducing pain through changes in blood pressure (BP). Therefore, we aimed to evaluate the effect of RE training on pain, BP, and heart rate. In a randomised controlled trial, eighteen sedentary women completed the study in RE (n=10) or control (n=8) groups. In the exercise group, the patients had a circuit RE program in non-dialysis days, two times a week, for six weeks. The RE protocol consisted of six exercises performing with 10 repetitions at 50-60% of 1-repetition maximum. Resting and intradialytic pain threshold (algometer using a 1 kg pressure load), BP, and heart rate were measured 48 h before and after the intervention. There were no significant differences from pre- to post-intervention, or between the groups regarding pain threshold, systolic and diastolic BP, and heart rate at rest and during the haemodialysis process (P>0.05). Although the 6-week low-intensity RE training in non-dialysis days was safe for chronic haemodialysis women, it could not change resting and intradialytic pain and hemodynamic measures.
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Suzuki K, Gonda K, Kishimoto Y, Katsumoto Y, Takenoshita S. Potential curing and beneficial effects of Ooitabi (Ficus pumila L.) on hypertension and dyslipidaemia in Okinawa. J Hum Nutr Diet 2021; 34:395-401. [PMID: 32845065 PMCID: PMC8048928 DOI: 10.1111/jhn.12806] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Over 30% of the population of Okinawa Prefecture have a high body mass index. The incidence of hypertension and dyslipidaemia has also increased in recent years. We found that Ooitabi (Ficus pumila L.), a plant native to Okinawa, was useful for hypertension. During ancient times, the extracts of Ooitabi leaves were used for making Ishimaki tea in some areas of Okinawa Prefecture. The plants in Okinawa are rich in antioxidants, and four flavonoid glycosides, including rutin, have been identified in Ooitabi. METHODS In the present study, we conducted clinical verification tests on the effects of drinking Ishimaki tea on outpatients with hypertension and dyslipidaemia. Of 3814 Japanese patients who underwent medical check-ups in Okinawa, 38 individuals with high blood pressure, dyslipidaemia, liver dysfunction and gout visited our hospital as outpatients and were asked to drink Ishimaki tea. RESULTS After 3 months, there were significant reductions in body mass index, systolic and diastolic blood pressure, total cholesterol, low-density lipoprotein cholesterol, γ-glutamyltrans peptidase, uric acid and ratio of blood vessel insulin resistance. CONCLUSIONS Ooitabi extract can lower blood pressure and improve lipid abnormalities and has likely contributed to the well-known health and longevity of the population in Okinawa.
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Shen S, Suzuki K, Kohmura Y, Fuku N, Someya Y, Naito H. Engagement in different sport disciplines during university years and risk of locomotive syndrome in older age: J-Fit + Study. Environ Health Prev Med 2021; 26:36. [PMID: 33752592 PMCID: PMC7983270 DOI: 10.1186/s12199-021-00958-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/11/2021] [Indexed: 11/29/2022] Open
Abstract
Background Among former Olympic-level athletes, engagement in different sport disciplines has been associated with mortality risk in subsequent years. However, limited evidence is available on whether engagement in different sport disciplines at a young age is associated with locomotive syndrome (LS) risk later in life. This study examined the relationship between engagement in different sport disciplines during university years and LS risk in older age among former university athletes. Methods Participants were 274 middle-aged and 294 older men alumni who graduated from a school of physical education in Japan. LS risk was defined as answering “yes” to any of the Loco-check questions. Data on university sports club membership were collected using questionnaires. University clubs were classified into three groups of cardiovascular intensity (low, moderate, high), following the classification system of sport disciplines by the American College of Cardiology. This classification considers the static and dynamic components of an activity, which correspond to the estimated percent of maximal voluntary contraction reached and maximal oxygen uptake achieved, respectively. University clubs were grouped based on the risk of bodily collision (no, yes) and extent of physical contact (low, moderate, high). Relationships between engagement in different sport disciplines and LS risk were analyzed using Cox proportional hazards models, and adjusted for age, height, weight, joint disease, habitual exercise, and smoking and drinking status. Results Adjusted hazard ratios and 95% confidence intervals associated with the low, moderate, and high cardiovascular intensity sports were 1.00 (reference), 0.48 (0.22–1.06, P = 0.070), and 0.44 (0.20–0.97, P = 0.042) in older men, respectively; however, there was no significant association between these parameters among middle-aged men. Engagement in sports associated with physical contact and collision did not affect LS risk in either group. Conclusions Engagement in sports associated with high cardiovascular intensity during university years may reduce the risk of LS in later life. Encouraging young people to participate in such activities might help reduce LS prevalence among older populations. Supplementary Information The online version contains supplementary material available at 10.1186/s12199-021-00958-w.
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Shen S, Suzuki K, Kohmura Y, Fuku N, Someya Y, Naito H. Association of physical fitness and motor ability at young age with locomotive syndrome risk in middle-aged and older men: J-Fit + Study. BMC Geriatr 2021; 21:89. [PMID: 33516172 PMCID: PMC7847559 DOI: 10.1186/s12877-021-02047-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 01/21/2021] [Indexed: 12/17/2022] Open
Abstract
Background Physical fitness and motor ability are associated with the incidence of locomotive syndrome (LS) in older adults. The relationships between physical fitness and motor ability at a young age to LS risk in later life remain unclear. This study examined the association between physical fitness and motor ability among university students and their risk of LS in middle and old age. Methods The participants were 231 male alumni aged 48–65 years from the Department of Physical Education of a university in Japan. Physical fitness and motor ability test results during their fourth year at the university were used. Physical fitness tests included the side-step test, vertical jump test, back muscle, grip strength, trunk lift, standing trunk flexion, and step-test. Motor ability was tested using the 50-m and 1500-m run, running long jump, hand-ball throw, and pull-up test. LS risk was assessed using a seven-question standardized self-administered Loco-check questionnaire. Participants were divided into three groups (low, medium, and high) based on physical fitness and motor ability test results at young age, and LS risk was assessed at an older age across the three groups using Cox proportional hazards models. Results From the 2017 follow-up survey, the median follow-up period was 37 years (interquartile range, 33–41), and LS risk was suspected for 31 (13.4%) participants. Better performance on the side-step test was associated with the reduced risk of LS (hazard ratio 0.32; 95% confidence interval, 0.101–0.983, P = 0.047). Conclusions Good agility (side-step test) at a young age may reduce the future risk of LS among middle-aged and older men. Supplementary Information The online version contains supplementary material available at 10.1186/s12877-021-02047-7.
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Yamaguchi T, Makiguchi T, Nakamura H, Yamatsu Y, Hirai Y, Shoda K, Suzuki K, Kim M, Kurozumi S, Motegi SI, Shirabe K, Yokoo S. Impact of muscle volume loss on acute oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection. Int J Oral Maxillofac Surg 2021; 50:1195-1202. [PMID: 33414037 DOI: 10.1016/j.ijom.2020.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/25/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022]
Abstract
This study evaluated the association between skeletal muscle mass depletion and severe oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection. Skeletal muscle mass was evaluated in 60 patients using the skeletal muscle index, which was based on skeletal muscle cross-sectional area (on computed tomography) at the level of the third lumbar vertebra. In accordance with the grading criteria of the Radiation Therapy Oncology Group, patients with a grade ≥3 were defined as having severe oral mucositis. Multivariate logistic regression analysis was used to evaluate independent risk factors for severe oral mucositis. Eleven patients (18.3%) were diagnosed with low skeletal muscle mass. Severe oral mucositis occurred in 17 (28.3%) patients, and the mean skeletal muscle index was 42.8 cm2/m2. A low skeletal muscle mass (hazard ratio 18.1; P=0.001) and a chemotherapy regimen consisting of 5-fluorouracil and cisplatin (versus cisplatin only) (hazard ratio 5.5; P=0.015) were independent risk factors for severe oral mucositis. Future prospective studies are warranted to identify effective pre- and perioperative exercises and nutrition programmes to increase low skeletal muscle mass and reduce the incidence of severe oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection.
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Ke D, Lu D, Cai G, Wang X, Zhang J, Suzuki K. Chronological and Skeletal Age in Relation to Physical Fitness Performance in Preschool Children. Front Pediatr 2021; 9:641353. [PMID: 34055684 PMCID: PMC8160222 DOI: 10.3389/fped.2021.641353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/20/2021] [Indexed: 12/18/2022] Open
Abstract
Introduction: Physical fitness is an adaptive state that varies with an individual's growth and maturity status. Considering that the difference in skeletal maturity already existed among preschool children, this study was designed to determine the influence of skeletal age and chronological age on preschoolers' physical fitness performance. Methods: This cross-sectional study was conducted in 945 healthy preschoolers (509 males, 436 females) aged between 3.0 and 6.0 years in Shanghai, China. We used the method of TW3-C RUS to determine skeletal age. Chronological age was measured by subtracting the date of birth from the test date. Sit and reach, 2 × 10 m shuttle run test, standing long jump, tennis ball throw, 5 m jump on both feet, and balance beam walk were considered for physical fitness performance. Correlation coefficients and partial correlations adjusting height and weight were used to determine the relationships among the variables of skeletal age/ relative skeletal age, chronological age/relative chronological age, and physical fitness items. Results: Skill-related physical fitness was weakly to moderately associated with skeletal age (the absolute value of r: 0.225-0.508, p < 0.01) and was moderately to strongly associated with chronological age (the absolute value of r: 0.405-0.659, p < 0.01). Health-related physical fitness items (BMI and sit and reach) showed a fairly weak to no correlation with skeletal age and chronological age. After adjusting the height and weight, an extremely weak to no correlation was observed between skeletal age and both health- and skill-related physical fitness, and weak-moderate correlations were noted between chronological age and skill-related physical fitness (the absolute value of r: 0.220-0.419, p < 0.01). In children in Grade 1, skill-related physical fitness (except for balance beam walk) showed a weak to moderate correlation with relative chronological age (the absolute value of r: 0.227-0.464, p < 0.05). Conclusion: (1) both skeletal age and chronological age are associated with skill-related rather than health-related physical fitness performance, and after adjusting height and weight, chronological age, rather than skeletal age, is associated with skill-related physical fitness performance; (2) for preschool children, skill-related physical fitness performance is influenced by relative chronological age rather than individual differences in skeletal maturation, especially in the lower grades.
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Sato K, Mano T, Ihara R, Suzuki K, Niimi Y, Toda T, Iwatsubo T, Iwata A. Cohort-Specific Optimization of Models Predicting Preclinical Alzheimer's Disease, to Enhance Screening Performance in the Middle of Preclinical Alzheimer's Disease Clinical Studies. J Prev Alzheimers Dis 2021; 8:503-512. [PMID: 34585226 DOI: 10.14283/jpad.2021.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND Models that can predict brain amyloid beta (Aβ) status more accurately have been desired to identify participants for clinical trials of preclinical Alzheimer's disease (AD). However, potential heterogeneity between different cohorts and the limited cohort size have been the reasons preventing the development of reliable models applicable to the Asian population, including Japan. OBJECTIVES We aim to propose a novel approach to predict preclinical AD while overcoming these constraints, by building models specifically optimized for ADNI or for J-ADNI, based on the larger samples from A4 study data. DESIGN AND PARTICIPANTS This is a retrospective study including cognitive normal participants (CDR-global = 0) from A4 study, Alzheimer Disease Neuroimaging Initiative (ADNI), and Japanese-ADNI (J-ADNI) cohorts. MEASUREMENTS The model is made up of age, sex, education years, history of AD, Clinical Dementia Rating-Sum of Boxes, Preclinical Alzheimer Cognitive Composite score, and APOE genotype, to predict the degree of amyloid accumulation in amyloid PET as Standardized Uptake Value ratio (SUVr). The model was at first built based on A4 data, and we can choose at which SUVr threshold configuration the A4-based model may achieve the best performance area under the curve (AUC) when applied to the random-split half ADNI or J-ADNI subset. We then evaluated whether the selected model may also achieve better performance in the remaining ADNI or J-ADNI subsets. RESULT When compared to the results without optimization, this procedure showed efficacy of AUC improvement of up to approximately 0.10 when applied to the models "without APOE;" the degree of AUC improvement was larger in the ADNI cohort than in the J-ADNI cohort. CONCLUSIONS The obtained AUC had improved mildly when compared to the AUC in case of literature-based predetermined SUVr threshold configuration. This means our procedure allowed us to predict preclinical AD among ADNI or J-ADNI second-half samples with slightly better predictive performance. Our optimizing method may be practically useful in the middle of the ongoing clinical study of preclinical AD, as a screening to further increase the prior probability of preclinical AD before amyloid testing.
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Hui SSC, Zhang R, Suzuki K, Naito H, Balasekaran G, Song JK, Park SY, Liou YM, Lu D, Poh BK, Kijboonchoo K, Thasanasuwan W. The associations between meeting 24-hour movement guidelines and adiposity in Asian Adolescents: The Asia-Fit Study. Scand J Med Sci Sports 2020; 31:763-771. [PMID: 33249648 DOI: 10.1111/sms.13893] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/23/2020] [Accepted: 11/18/2020] [Indexed: 12/18/2022]
Abstract
Less is known about how compliance with 24-hour movement guidelines for physical activity (PA), sedentary behavior, and sleep affects adiposity in young people. The purposes of this study were to compare compliance with 24-hour movement guidelines in Asian adolescents and to examine the associations between compliance with 24-hour movement guidelines and body fat percentage. A sample of 12 590 adolescents aged 13.63 (± 1.01) years from eight Asian metropolitan cities including Bangkok (Thailand), Hong Kong SAR, Kuala Lumpur (Malaysia), Seoul (South Korea), Shanghai (China), Singapore, Taipei (Taiwan), and Tokyo (Japan) completed interviewer-administered questionnaires to assess moderate-to-vigorous PA, recreational screen time, sleep duration, and covariates. Body fat percentage was measured using bioelectrical impedance analysis. We found that compliance with 24-hour movement guidelines differed in Asian adolescents across the eight cities. Adjusting for covariates, there was a negative association between number of the guidelines being met and body fat percentage in Asian adolescents. In addition, meeting only the sleep guideline and both the PA and sleep guidelines had negative associations with body fat percentage compared with no guidelines being met. Our findings improve the understanding about how compliance with 24-hour movement guidelines benefit a healthy body weight in adolescents, as well as contribute to development of evidence-based 24-hour movement guidelines for Asian young people. Future research is needed to gain better insights into the directionality of the associations between compliance with 24-hour movement guidelines and adiposity, as well as the mechanisms underlying the associations in Asian adolescents.
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Iwasaki A, Kokubun N, Funakoshi K, Hirata K, Suzuki K. Hydrocephalus due to marked enlargement of spinal roots in a patient with chronic inflammatory demyelinating polyradiculoneuropathy. Eur J Neurol 2020; 27:2385-2388. [DOI: 10.1111/ene.14492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 08/19/2020] [Indexed: 11/28/2022]
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Quach H, Nooka A, Samoylova O, Venner C, Facon T, Spencer A, Usmani S, Weisel K, Mateos M, Kim K, Grosicki S, Suzuki K, Delimpasi S, Obreja M, Zahlten-Kumeli A. CARFILZOMIB, DEXAMETHASONE, AND DARATUMUMAB VERSUS CARFILZOMIB AND DEXAMETHASONE IN RELAPSED OR REFRACTORY MULTIPLE MYELOMA: SUBGROUP ANALYSIS OF THE PHASE 3 CANDOR STUDY BY NUMBER OF PRIOR LINES OFTHERAPY AND PRIOR THERAPIES. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Ito M, Takase Y, Sasamura K, Kotsuma T, Ooshima Y, Minami Y, Suzuki J, Tanaka E, Oguchi M, Okuda T, Suzuki K, Yoshioka Y. Comparison of Physician-Recorded Toxicities and Patient-Reported Outcomes Among 5 Different Radiotherapy Methods for Prostate Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kohga A, Kawabe A, Yajima K, Okumura T, Yamashita K, Isogaki J, Suzuki K, Muramatsu K, Komiyama A. Does preoperative enhanced CT predict requirement of intestinal resection in the patients with incarcerated myopectineal hernias containing small bowel? Hernia 2020; 25:1279-1287. [PMID: 33128678 DOI: 10.1007/s10029-020-02325-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/19/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE Bowel wall enhancement on CT imaging is considered one of the useful features for the prediction of the presence of irreversible ischemic change in patients with small bowel obstruction. However, the applicability of CT imaging in patients with incarcerated hernias has not been investigated in detail. The aim of this retrospective study was to evaluate the feasibility of preoperative CT findings for the prediction of the presence of irreversible ischemic change in patients with incarcerated hernias containing small bowel. METHODS Included in this study were 76 patients who underwent surgery for preoperatively diagnosed incarcerated hernias containing small bowel (27 inguinal hernias, 37 femoral hernias and 12 obturator hernias) at our hospital between January 2011 and June 2020. The preoperative clinicoradiological features were compared between the groups, and predictors for intestinal resection were evaluated. RESULTS Nineteen patients required intestinal resection (Resection group), and the other 57 patients did not require intestinal resection (Nonresection group). Multivariate analyses revealed that age ≥ 80 years (p = 0.018, odds ratio = 6.604) and the absence of bowel wall enhancement (p = 0.032, odds ratio = 51.200) were independent predictors for intestinal resection. In resected specimens, all patients with an absence of bowel wall enhancement on preoperative enhanced CT had ischemic changes extending beyond the muscularis propria. CONCLUSIONS Preoperative enhancement CT yields useful information for the prediction of the presence of irreversible ischemic change in patients with incarcerated hernias containing small bowel.
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Kitai M, Narita M, Shimada K, Suzuki K, Nakazawa H, Shibutani T, Yamamoto K, Jimi T, Yano H, Shiozaki T, Matsuoka K, Nagao S, Yamaguchi S. What is the best treatment for older patients with invasive cervical carcinoma? Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ke D, Lu D, Cai G, Zhang J, Wang X, Suzuki K. Accelerated skeletal maturation is associated with overweight and obesity as early as preschool age: a cross-sectional study. BMC Pediatr 2020; 20:452. [PMID: 32988365 PMCID: PMC7520956 DOI: 10.1186/s12887-020-02353-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 09/17/2020] [Indexed: 12/20/2022] Open
Abstract
Background Body mass index (BMI) and skeletal age (SA) are important indicators of individual growth and maturation. Although the results have not been unified, most studies indicated that accelerated skeletal maturation is associated with overweight/obesity. However, there have so far been insufficient studies about the association between accelerated skeletal maturation and overweight/obesity in preschoolers, particularly Asian children. A cross-sectional study was conducted on Chinese children to verify the association between accelerated skeletal maturation and overweight/obesity at preschool age. Methods The study involved 1330 participants aged 3.1–6.6 years old (730 males and 600 females) in Shanghai, China. The skeletal age was determined according to the method of TW3-C RUS. Accelerated skeletal maturation was defined as relative SA (SA minus chronological age [CA]) ≥1.0 years. BMI was classified as thinness, normal weight, overweight, and obesity according to the International Obesity Task Force (IOTF) BMI cut-offs. The Chi-square was performed to determine the statistically significant difference in the frequency of accelerated skeletal maturation in BMI and age categories. The logistic regression model analyzed the association between accelerated skeletal maturation and overweight/obesity. Results The percentage of accelerated skeletal maturation increased with BMI (7.8% of children in thinness group had accelerated skeletal maturation; the percentage increased to 30.8% in obese group. x2 = 89.442, df = 3, P < 0.01) and age group (at age 3.5, 3.5% of participants had accelerated skeletal maturation; at age 6.0 years, this increased to 27.8%. x2 = 43.417, df = 5, P < 0.01). Logistic regression analysis showed that children with overweight and obesity are more likely to have accelerated skeletal maturation than children with normal weight after adjusting for gender and age (Overweight, odds ratio [OR] = 3.27, 95% confidence interval [CI]: 2.20–4.87; Obese, OR = 4.73, 95% CI: 2.99–7.48). Conclusions There is an association between accelerated skeletal maturation and overweight/obesity among preschool children. This study suggests that accelerated skeletal maturation might coexist with overweight/obesity in preschool children, and interventions, such as dietary modifications and increasing levels of physical activity, should be employed to prevent both accelerated skeletal maturation and overweight/obesity as early as preschool age.
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Sato M, Isomura T, Suzuki K. Internet usage and the problems about the commute to school in Japanese adolescents. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
As inappropriate Internet usage has been increasing, various problems were observed, particularly in adolescence. For example, excessive Internet use might lead to absenteeism for high school students. This study aimed to examine the association between Internet usage and some difficulties of commute, such as tardy and absence for school in 4th to 9th-grade students.
Methods
Study participants were all students of the 4th-9th grade in Japanese rural public schools and their parents. In 2018 a self-reported survey was conducted. The questionnaire contained items about Internet usage, such as duration and family rules, and the current situation about commuting to school. The parents answered the same questions about their children and also responded to their own Internet usage time. The answers about their commute to school “tardy more than once a week”, “sometimes absent” and “have experience of school absenteeism” were categorized as “school absence”. The duration of Internet use was categorized every 2 hours as “never”, “0-2hrs (reference) ”, “2-4hrs” and “over 6hrs”. Multiple logistic regression analyses were performed to examine the associations between the duration of Internet use and the absence of school adjusting by covariates.
Results
Study participants were 6,031 students and 5,525 guardians participated, and response rates were 87.8%, and 80.5%, respectively. The number of “school absence” case was 429 (7.2%). The “school absence” was significantly associated with the duration of Internet use, and these relationships grew stronger as the period got longer. Odds ratio and 95% confidence interval of “over 6hrs” were 4.1 and 2.9-5.6, respectively. The parents’ own Internet usage time was also associated with their children’s school absence.
Conclusions
The longer students used the Internet, the higher the risk of school absence. Own Internet usage time of parents was also associated with children's commuting to school.
Key messages
Excessive Internet use might induce absenteeism in younger adolescents as well as older adolescents. Few studies have examined the association between Internet use and absenteeism.
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Umemura T, Terasaki H, Onishi K, Matsumi Y, Ueda K, Suzuki K. Comparison of effects of air pollution on children between urban and rural area in west Bengal, India. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Air pollution is a serious problem in India. According to World Bank's data in 2015, about 660 million people were categorized as poor (US$3.20 per day per capita) in India and the proportion to total the population was 50.4 %. Even though the number and proportion are large, the effects on the poor people have not been studied very well. We measured the effects of air pollution on children of the poor and compared between urban and rural area in West Bengal, India.
Methods
24 male students (12.5 ± 0.8 years) in urban area (Kolkata) and 20 male students (12.5 ± 0.5 years) in rural area (Jata) were recruited. We measured fractional exhaled nitric oxide (FeNO), which was index of airway inflammation and checked allergic symptoms. The survey was conducted in January (dry season) and August (rainy season) 2019 to confirm a seasonal difference. Air quality index (AQI) in each area was used for index of air pollution.
Results
Average AQI was 335 (Kolkata) and 155 (Haldia: near Jata) for 2 months from December 2018 to January 2019, while average AQI was 51 (Kolkata) and 38 (Haldia) for 2 months from July to August 2019. As for FeNO in dry season, the value in Kolkata was 24.9 ± 16.1 and the value in Jata was 11.7 ± 3.5. As for FeNO in rainy season, the value in Kolkata was 22.3 ± 17.5 and the value in Jata was 16.8 ± 6.7. The value of FeNO in Kolkata was higher than Jata in either season. Although a seasonal difference was not detected in Kolkata, the value in dry season was lower than in rainy season in Jata. The prevalence of allergic symptoms in dry season was higher than in rainy season in Kolkata. On the other hand, there was no difference in the prevalence between dry and rainy season in Jata.
Conclusions
Even though AQI and the prevalence of allergic symptoms decreased, the value of FeNO did not decrease in Kolkata. Because AQI decreased, indoor air pollution might have influenced on airway. It is supposed that prevention of indoor air pollution is important.
Key messages
Airway of children in urban area may be influenced on by air pollution more than in rural area. Indoor air pollution may influence on children of the poor more than outdoor air pollution.
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Yamatani K, Hirayama S, Seino U, Hirayama A, Hori A, Suzuki K, Idei M, Kitahara M, Miida T. Preβ1-high-density lipoprotein metabolism is delayed in patients with chronic kidney disease not on hemodialysis. J Clin Lipidol 2020; 14:730-739. [PMID: 32868248 DOI: 10.1016/j.jacl.2020.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND Preβ1-high-density lipoprotein (HDL) is a lipid-poor cholesterol acceptor that is converted to lipid-rich HDL by lecithin-cholesterol acyltransferase (LCAT). In patients receiving hemodialysis, preβ1-HDL metabolism is hampered even if HDL cholesterol is normal. Hemodialysis may affect preβ1-HDL metabolism by releasing lipases from the vascular wall due to heparin. OBJECTIVES We investigated whether preβ1-HDL metabolism is delayed in patients with chronic kidney disease (CKD) who are not receiving hemodialysis. METHODS We examined 44 patients with Stage 3 or higher CKD and 22 healthy volunteers (Control group). The patients with CKD were divided into those without renal replacement therapy (CKD group, n = 22) and those undergoing continuous ambulatory peritoneal dialysis (CAPD group, n = 22). Plasma preβ1-HDL concentrations were determined by immunoassay. During incubation at 37°C, we used 5,5-dithio-bis (2-nitrobenzoic acid) (DTNB) to inhibit LCAT activity and defined the conversion halftime of preβ1-HDL (CHTpreβ1) as the time required for the difference in preβ1-HDL concentration in the presence and absence of 5,5-DTNB to reach half the baseline concentration. RESULTS The absolute and relative preβ1-HDL concentrations were higher, and CHTpreβ1 was longer in the CKD and CAPD groups than in the Control group. Preβ1-HDL concentration was significantly correlated with CHTpreβ1 but not with LCAT activity in patients with CKD and CAPD. CONCLUSION Preβ1-HDL metabolism is delayed in patients with CKD who are not on hemodialysis. This preβ1-HDL metabolic delay may progress as renal function declines.
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Numakura K, Kobayashi M, Ishida T, Okane K, Suzuki K, Shimoda N, Kumazawa T, Suzuki T, Sasaki R, Fukuda H, Nara T, Kanda S, Huang M, Saito M, Narita S, Inoue T, Tsuchiya N, Habuchi T. The effect of levofloxacin for patients with non-muscle invasive bladder cancer treated by intravesical Bacillus Calmette-Guerin: Results of a randomized, prospective, multicenter study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33537-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Kaneko M, Tsuji K, Masuda K, Ueno K, Henmi K, Nakagawa S, Fujita R, Suzuki K, Inoue Y, Shindo H, Konishi E, Takamatsu T, Ukimura O. Automated urine cell image analysis with a convolutional neural network. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33493-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Sekine Y, Kotani K, Oka D, Nakayama H, Miyazawa Y, Syuto T, Arai S, Nomura M, Koike H, Matsui H, Shibata Y, Suzuki K. Usefulness of presepsin for detecting sepsis in urinary-tract infections. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33449-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Sho T, Suda G, Ogawa K, Kitagataya T, Yamada R, Shigesawa T, Suzuki K, Nakamura A, Nakai M, Natsuizaka M, Morikawa K, Sakamoto N. P-171 Lenvatinib in patients with unresectable hepatocellular carcinoma who do not meet REFLECT trial inclusion criteria. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Jang S, Suto Y, Liu J, Liu Q, Zuo Y, Duy PN, Miura T, Abe Y, Hamasaki K, Suzuki K, Kodama S. CORRIGENDUM TO: CAPABILITIES OF THE ARADOS-WG03 REGIONAL NETWORK FOR LARGE-SCALE RADIOLOGICAL AND NUCLEAR EMERGENCY SITUATIONS IN ASIA. RADIATION PROTECTION DOSIMETRY 2020; 188:270. [PMID: 32459335 DOI: 10.1093/rpd/ncaa079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 01/13/2020] [Accepted: 02/19/2020] [Indexed: 06/11/2023]
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Luo Y, Hara T, Kawashima A, Ishido Y, Suzuki S, Ishii N, Kambara T, Suzuki K. Pathological role of excessive DNA as a trigger of keratinocyte proliferation in psoriasis. Clin Exp Immunol 2020; 202:1-10. [PMID: 32415989 DOI: 10.1111/cei.13455] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is characterized by excessive growth and aberrant differentiation of epidermal keratinocytes due to persistent inflammation. However, the underlying mechanism that triggers immune activation in psoriasis is not clear. In this study, we explored excessive DNA as a potential trigger of psoriasis using cultured human keratinocytes and psoriatic skin tissues. We demonstrated that human genomic DNA fragments induced tumour necrosis factor (TNF)-α expression, hyperproliferation and over-expression of heparin-binding epidermal-like growth factor (HB-EGF) and transforming growth factor (TGF)-α, accompanied by defective expression of keratins 1 and 10 in cultured normal human epidermal keratinocytes, which have a similar phenotype to that of keratinocytes in psoriatic skin lesions. In psoriatic lesions, we found high levels of double-stranded (ds)DNA fragments, accompanying keratinocytes expressing Ki-67, HB-EGF and TNF-α. In addition, we showed that 1,25-dihydroxyvitamin D3 inhibited genomic DNA fragment-induced TNFA and interleukin-1β (IFNB) expression in human keratinocytes, and an intact function of cathelicidin anti-microbial peptide (CAMP) was required for this effect. These results suggest that excessive dsDNA fragments probably act as a risk factor for immune activation in psoriasis, and the active form of vitamin D can prevent genomic DNA-mediated skin inflammation via CAMP.
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Izumi K, Suzuki K, Hashimoto M, Endoh T, Doi K, Iwai Y, Kaneko Y, Jinzaki M, Ko S, Takeuchi T. AB1103 AUTOMATIC FINGER JOINT BONE EROSION SCORE PREDICTION CONSIDERING 2-TIME-POINT X-RAYS OF PATIENTS WITH RHEUMATOID ARTHRITIS BY DEEP LEARNING. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Medical image analysis using deep learning (DL) has been attracting attention. In previous research, we proposed a DL method for detection of joint region and evaluation for bone destruction at a single point in time in hand X-rays of patients with rheumatoid arthritis (RA) [1-2]. However, in the score of van der Heijde-modified total Sharp scores (mTSS) in X-rays, it is difficult to apply the method as it is. In mTSS, score difference between 2-time points is important, and there is a problem that the score at each time varies depending on the doctor who evaluates.Objectives:We aimed at developing an mTSS scoring method considering 2-time-point difference with a DL method.Methods:A total of 104 X-ray image sets of both hands at two time points with an interval of ≥1 year were randomly obtained from patients with RA who had visited our clinic in 2015. Well-trained doctors determined the erosion scores of MP and PIP/IP joints of each hand in X-rays according to mTSS. These evaluations of hand joints were performed using our developed annotation software tool. In the learning phase, joint images were randomly divided into five sets for 5-fold cross-validation. We utilized a convolutional neural network model, such as SSD [3], for detecting joint regions and classifying the scores (Fig 1).Figure1.The models for classification were designed in consideration of the difference in erosion scores of each patient between the 2-time points of X-rays. The loss function of the DL model was defined bellow;SCE: softmax cross entropyMSE: mean squared errort: training datay: output of DL model0: the former time point1: the latter time pointT: transpose of matrixHere, the coefficient γ is designed to reduce the error for another set of scores with equal differences. The first term of the loss function works to optimize the score at each time point, and the second term works to optimize the score difference at both time points. Thus, our method can be trained without being affected by characteristic training data.Results:The number of joints with differences in erosion score between the former and latter time points was 1 (-2 points), 9 (-1), 2015 (0), 32 (+1), 17 (+2), and 6 (+3). There were no joints with score changes of -5, -4, -3, +4, and +5 points.As a performance of predicting the difference in erosion score between the 2-time points of each patient’s X-ray, our models presented a mean error of 0.412 per each joint in one set for 5-cross validation as compared with physicians’ evaluation (Fig 2).Figure 2.Conclusion:Our DL-based models to predict hand joint erosion scores in X-rays were developed with relatively small samples. This suggests that the predictive performance may increase by collecting more training dataset. Next, we will apply our method to the prediction of joint space narrowing score.References:[1]Izumi K, Hashimoto M, Suzuki K, et al. Detecting Hand Joint Ankylosis in Radiographic Images Using Deep Learning: A Step in Developing Automatic Radiographic Scoring System for Bone Destruction.Arthritis Rheumatol2018;70 (suppl 10).[2]Izumi K, Suzuki K, Hashimoto M, et al. SAT0543 AUTOMATIC DETECTION OF HAND JOINT REGION, ANKYLOSIS AND SUBLUXATION IN RADIOGRAPHIC IMAGES USING DEEP LEARNING: DEVELOPMENT OF ARTIFICIAL INTELLIGENCE-BASED RADIOGRAPHIC EVALUATION SYSTEM FOR BONE DESTRUCTION.Annals of the Rheumatic Diseases2019;78 (suppl 2), pp. 1364-1364.[3]Liu W, Anguelov D, Szgedy C, et al. SSD: single shot multibox detector.European Conference on Computer Vision (ECCV) 2016.Acknowledgments:Izumi and Suzuki are contributed equally.Disclosure of Interests:Keisuke Izumi Grant/research support from: Asahi Kasei Pharma, Takeda Pharmaceutical Co., Ltd., Speakers bureau: Asahi Kasei Pharma Corp, Astellas Pharma Inc., Bristol Myers Squibb, Chugai Pharmaceutical Co., Ltd., Eli Lilly Japan K.K., Mitsubishi Tanabe Pharma Co., Kanata Suzuki Employee of: Fujitsu Laboratories Ltd., Masahiro Hashimoto: None declared, Toshio Endoh Employee of: Fujitsu Laboratories Ltd., Kentaro Doi Employee of: Fujitsu Ltd., Yuki Iwai Employee of: Fujitsu Ltd., Yuko Kaneko Speakers bureau: AbbVie, Eisai Pharmaceutical, Chugai Pharmaceutical Co., Ltd., Bristol Myers Squibb, Astellas Pharma Inc., Mitsubishi Tanabe Pharma Co., Pfizer Japan Inc., Janssen Pharmaceutical K.K., Eli Lilly Japan K.K., Santen Pharmaceutical Co., Ltd., Kyowa Hakko Kirin Co. Ltd. and UCB Japan Co. Ltd., Masahiro Jinzaki: None declared, Shigeru Ko Grant/research support from: Fujitsu Ltd., Tsutomu Takeuchi Grant/research support from: Astellas Pharma Inc, Chugai Pharmaceutical Co, Ltd., Daiichi Sankyo Co., Ltd., Takeda Pharmaceutical Co., Ltd., AbbVie GK, Asahikasei Pharma Corp., Mitsubishi Tanabe Pharma Co., Pfizer Japan Inc., Eisai Co., Ltd., AYUMI Pharmaceutical Corporation, Nipponkayaku Co. Ltd., Novartis Pharma K.K., Teijin, Consultant of: Astra Zeneca K.K., Eli Lilly Japan K.K., Novartis Pharma K.K., Mitsubishi Tanabe Pharma Co., Abbivie GK, Nipponkayaku Co.Ltd, Janssen Pharmaceutical K.K., Astellas Pharma Inc., Taiho Pharmaceutical Co. Ltd., Chugai Pharmaceutical Co. Ltd., Taisho Toyama Pharmaceutical Co. Ltd., GlaxoSmithKline K.K., UCB Japan Co. Ltd., Speakers bureau: Astellas Pharma Inc., Bristol Myers Squibb, Chugai Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Pfizer Japan Inc., Santen Pharmaceutical Co., Ltd., Takeda Pharmaceutical Co., Ltd., Teijin Pharma Ltd., AbbVie GK, Asahi Kasei Pharma Corp., Taisho Toyama Pharmaceutical Co., Ltd., SymBio Pharmaceuticals Ltd., Janssen Pharmaceutical K.K., Celltrion Inc., Nipponkayaku Co. Ltd., and UCB Japan
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Yamada H, Sasaki T, Suzuki K, Takeshita M, Tanemura S, Seki N, Tsujimoto H, Takeuchi T. OP0128 DISTINCT FEATURES OF HLA-DR+ AND HLA-DR- PD-1HI CXCR5- T PERIPHERAL HELPER CELLS IN SEROPOSITIVE RHEUMATOID ARTHRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:PD-1hi CXCR5- T peripheral helper (Tph) cells are newly identified pathogenic CD4+ helper T cells in rheumatoid arthritis (RA). Since Tph cells have been emerged quite recently, the characteristics of Tph cells as a biomarker of RA are not fully understood.Objectives:The aim of the study is to evaluate how useful Tph cells in peripheral bloods are when compared to other immune cell subsets, and to clarify which Tph subset most accurately reflects the disease activity of RA.Methods:The RA patients who visited our rheumatology department between January 2000 and February 2017, and met the 2010 ACR/European League Against Rheumatism (EULAR) classification criteria were included. We first assessed correlation with 40 immune cell subsets and the disease activity of RA. Next, the proportions of these immune cells were compared between RA and healthy controls (HCs). We also investigated the immune cell subsets which reflected the time course change of the disease activity after the methotrexate (MTX) treatment. The study protocol was approved by the ethics committee at Keio University School of Medicine.Results:Thirty-four seropositive RA, 12 seronegative RA and 34 HCs were included. The Immune cell subsets which showed correlation with DAS28-ESR (r> 0.2 or r> -0.2) were activated CD4 T cells (r= 0.31), HLA-DR+Th1 cells (r= 0.20), HLA-DR+Th1-17 cells (r= 0.25), Tfh1-17 cells (r= -0.25), HLA-DR+Tph cells (r= 0.22), CD3+CD8+naïve T cells (r= -0.25), CD3+CD8+effector memory T cells (r= -0.26), plasma cells (r= 0.40) and CD14++CD16+intermediate monocyte (r= 0.23). The proportions of HLA-DR+Th1 cells (2.3% vs. 5.7%), HLA-DR+Th1-17 cells (0.7% vs. 2.2%), Tfh1-17 cells (1.7% vs. 2.0%), HLA-DR+Tph cells (0.02% vs. 0.1%), CD3+CD8+effector memory T cells (16.6% vs 25.7%), plasma cells (0.04% vs. 0.17%) were statistically higher in the patients with RA compared to HCs. While the proportion of Tph cells showed weak correlation with DAS28-ESR (r= 0.18), that was extremely higher in RA (0.08% vs. 0.25%). Interestingly, when assessing the correlations with the disease activity in seropositive and seronegative RA separately, the proportions of Tph cells (r= 0.52) and HLA-DR+Tph cells (r= 0.50) were highly reflected in seropositive RA, but not in seronegative RA. Regarding the disease activity after the MTX treatment, the change of proportion of Tph cells between week 0 and 52 significantly reflected the change of DAS28-ESR (r= 0.75, p= 0.025), but not HLA-DR+Tph cells because of the non-specific reduction by the MTX treatment. Rather, HLA-DR-Tph cells significantly reflected the change of DAS28-ESR while receiving the MTX treatment (r= 0.76, p= 0.021).Conclusion:Tph cells and HLA-DR+Tph cells highly reflected the disease activity of seropositive RA. However, after the treatment, the proportion of HLA-DR+Tph cells decreased independent from the disease activity, and that of HLA-DR-Tph cells more accurately reflected the change of the disease activity during the treatment.References:[1]Rao DA, et al. Pathologically expanded peripheral T helper cell subset drives B cells in rheumatoid arthritis. Nature. 2017;542:110-114.Disclosure of Interests:Hiroki Yamada: None declared, Takanori Sasaki: None declared, Katsuya Suzuki: None declared, Masaru Takeshita: None declared, Shuhei Tanemura Employee of: I am employed by Mitsubishi Tanabe Pharma Corporation, Noriyasu Seki Employee of: I am employed by Mitsubishi Tanabe Pharma Corporation, Hideto Tsujimoto Employee of: I am employed by Mitsubishi Tanabe Pharma Corporation, Tsutomu Takeuchi Grant/research support from: Eisai Co., Ltd, Astellas Pharma Inc., AbbVie GK, Asahi Kasei Pharma Corporation, Nippon Kayaku Co., Ltd, Takeda Pharmaceutical Company Ltd, UCB Pharma, Shionogi & Co., Ltd., Mitsubishi-Tanabe Pharma Corp., Daiichi Sankyo Co., Ltd., Chugai Pharmaceutical Co. Ltd., Consultant of: Chugai Pharmaceutical Co Ltd, Astellas Pharma Inc., Eli Lilly Japan KK, Speakers bureau: AbbVie GK, Eisai Co., Ltd, Mitsubishi-Tanabe Pharma Corporation, Chugai Pharmaceutical Co Ltd, Bristol-Myers Squibb Company, AYUMI Pharmaceutical Corp., Eisai Co., Ltd, Daiichi Sankyo Co., Ltd., Gilead Sciences, Inc., Novartis Pharma K.K., Pfizer Japan Inc., Sanofi K.K., Dainippon Sumitomo Co., Ltd.
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