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A 4-Year Follow-up Cohort Study of the Respiratory Functions in Toner-handling Workers
Yanagi, Nobuaki,Kitamura, Hiroko,Mizuno, Mitsuhito,Hata, Koichi,Uchiyama, Tetsuro,Kuga, Hiroaki,Matsushita, Tetsuhiro,Kurosaki, Shizuka,Uehara, Masamichi,Ogami, Akira,Higashi, Toshiaki Occupational Safety and Health Research Institute 2014 Safety and health at work Vol.5 No.4
Background: Focusing on the respiratory function for health effect indices, we conducted a cross-sectional study on workers who did and did not handle toner to compare the longitudinal changes. Methods: Among 116 individuals who worked for a Japanese business equipment manufacturer and participated in the study, the analysis included 69 male workers who we were able to follow up for 4 years. We categorized the 40 workers engaged in toner-handling work as the exposed group and the 29 workers not engaged in these tasks as the referent group, and compared their respiratory function test results: peak expiratory flow rate (PEFR), vital capacity (VC), predicted vital capacity (%VC), forced expiratory volume in 1 second ($FEV_1$), and forced expiratory volume in 1 second as a percent of forced vital capacity ($FEV_1%$). Results: The cross-sectional study of the respiratory function test results at the baseline and at the $5^{th}$ year showed no statistically significant differences in PEFR, VC, %VC, $FEV_1$, and $FEV_1%$ between the exposed and referent workers. Also, respiratory function time-course for 4 years was calculated and compared between the groups. No statistically significant differences were shown. Conclusion: Our study does not suggest any toner exposure effects on respiratory function. However, the number of subjects was small in our study; studies of larger populations will be desired in the future.
A 4-Year Follow-up Cohort Study of the Respiratory Functions in Toner-handling Workers
Nobuaki Yanagi,Hiroko Kitamura,Mitsuhito Mizuno,Koichi Hata,Tetsuro Uchiyama,Hiroaki Kuga,Tetsuhiro Matsushita,Shizuka Kurosaki,Masamichi Uehara,,Akira Ogami,Toshiaki Higashi 한국산업안전보건공단 산업안전보건연구원 2014 Safety and health at work Vol.5 No.4
Background: Focusing on the respiratory function for health effect indices, we conducted a crosssectionalstudy on workers who did and did not handle toner to compare the longitudinal changes. Methods: Among 116 individuals who worked for a Japanese business equipment manufacturer andparticipated in the study, the analysis included 69 male workers who we were able to follow up for 4years. We categorized the 40 workers engaged in toner-handling work as the exposed group and the 29workers not engaged in these tasks as the referent group, and compared their respiratory function testresults: peak expiratory flow rate (PEFR), vital capacity (VC), predicted vital capacity (%VC), forcedexpiratory volume in 1 second (FEV1), and forced expiratory volume in 1 second as a percent of forcedvital capacity (FEV1%). Results: The cross-sectional study of the respiratory function test results at the baseline and at the 5thyear showed no statistically significant differences in PEFR, VC, %VC, FEV1, and FEV1% between theexposed and referent workers. Also, respiratory function time-course for 4 years was calculated andcompared between the groups. No statistically significant differences were shown. Conclusion: Our study does not suggest any toner exposure effects on respiratory function. However, thenumber of subjects was small in our study; studies of larger populations will be desired in the future
Tacrolimus for ulcerative colitis in children: a multicenter survey in Japan
( Tadahiro Yanagi ),( Kosuke Ushijima ),( Hidenobu Koga ),( Takeshi Tomomasa ),( Hitoshi Tajiri ),( Reiko Kunisaki ),( Takashi Isihige ),( Hiroyuki Yamada ),( Katsuhiro Arai ),( Atsushi Yoden ),( Tomo 대한장연구학회 2019 Intestinal Research Vol.17 No.4
Background/Aims: Tacrolimus is effective for refractory ulcerative colitis in adults, while data for children is sparse. We aimed to evaluate the effectiveness and safety of tacrolimus for induction and maintenance therapy in Japanese children with ulcerative colitis. Methods: We retrospectively reviewed the multicenter survey data of 67 patients with ulcerative colitis aged <17 years treated with tacrolimus between 2000 and 2012. Patients’ characteristics, disease activity, Pediatric Ulcerative Colitis Activity Index (PUCAI) score, initial oral tacrolimus dose, short-term (2-week) and long-term (1-year) outcomes, steroid-sparing effects, and adverse events were evaluated. Clinical remission was defined as a PUCAI score <10; treatment response was defined as a PUCAI score reduction of ≥20 points compared with baseline. Results: Patients included 35 boys and 32 girls (median [interquartile range] at admission: 13 [11-15] years). Thirty-nine patients were steroid-dependent and 26 were steroid-refractory; 20 had severe colitis and 43 had moderate colitis. The initial tacrolimus dose was 0.09 mg/kg/day (range, 0.05-0.12 mg/kg/day). The short-term clinical remission rate was 47.8%, and the clinical response rate was 37.3%. The mean prednisolone dose was reduced from 19.2 mg/day at tacrolimus initiation to 5.7 mg/day at week 8 (P<0.001). The adverse event rate was 53.7%; 6 patients required discontinuation of tacrolimus therapy. Conclusions: Tacrolimus was a safe and effective second-line induction therapy for steroid-dependent and steroid-refractory ulcerative colitis in Japanese children. (Intest Res 2019;17:476-485)
Classification of Capsizing and Sinking Factors
Yuichiro YANAGI,Harukuni TAGUCHI 국제이네비해양경제학회 2018 International Journal of e-Navigation and Maritime Vol.9 No.1
Systematical classification of accident factors is very important to take appropriate countermeasures to reduce accidents. The aim of this study is to classify capsizing and sinking factors so as to propose a checklist which could be used to analyze future accidents. The scope is investigation reports of capsizing and sinking accidents published by Japan Transport Safety Board between 2008 and March 2017. The investigation reports were surveyed in order to extract all factors involved in the accidents. Then the factors were categorized into eight classified factors according to their characteristics and a checklist for analyzing capsizing and sinking accidents was proposed. The checklist was applied to capsizing and sinking accidents surveyed in this study and it was revealed that refraining from “navigation in bad weather” is the most effective countermeasure for capsizing and sinking. It was also revealed that “flooding,” whose involvement was the highest for both capsizing and sinking, is the factor which needs countermeasures the most during navigation. It is concluded that accident analyses could be facilitated by applying the proposed checklist to future accidents.
Kojiro Yanagi,Kiyora Ito,Daisuke Murayama 한국코칭능력개발원 2024 International Journal of Coaching Science Vol.18 No.1
At a training site that encourages athletes to generate movement, it may not be possible to successfully generate a sense of movement simply by presenting the athletes with step-by-step practice published in general instruction manuals; the coach is required to tailor the road individually to the goal. In competitive sports that require high performance, there is a strong interest in the optimal road of coaching. However, few studies have clarified the coachs ability to build practice procedures by real coaching spot. The purpose of this study was to focus on the ability of coaches to build staged practice, and to present how to teach “Any 3/3 travel in flairs with 1/1 Spindle inside two circles (Urzica 2)” in the pommel horse in gymnastics, and by considering this from a phenomenological standpoint, we aim to gain new knowledge regarding the structure and modification ability of coachs practice stages. The method of this study was to select University Gymnast-A from among 20 male university gymnast participants and analyze them. The first step was to conduct a structural analysis of the target elements as a prerequisite for constructing the technical training path. Next, in order to analyze the structure of the practice stages, kinesthetic coaching for Gymnast-A was presented. Finally, the coachs kinesthetic orientation was analysed from a phenomenological standpoint. In the analysis, a phenomenological reflective analysis was conducted to examine how the coach constructed practice stage suitable for the players from the perspective of kinesthetic meaning and suitability of arrangement. It is important to get high scores in gymnastics competition to this element (Urzica 2) acquiring, and it is one that top gymnasts in recent years have incorporated into their performance program. This phenomenological analysis of the construction of the practice stages of the element not only provided new insights into the construction of the coachs practice stages and his ability to modify them, it also provided effective insights into the coaching of high-difficulty elements in gymnastics.
Kotaro Yanagi,Yukiko Kamiya,Toshihiko Kitajima,Takumi Yamaguchi,Yasunori Chiba,Koichi Kato 한국당과학회 2012 한국당과학회 학술대회 Vol.2012 No.1
High-mannose-type oligosaccharides are enzymatically trimmed in the endoplasmic reticulum, giving rise to various processing intermediates with exposure of specific glycotopes that are recognized by a series of lectins involved in glycoprotein-fate determination in cells. Atomic information of dynamic oligosaccharide conformations is essential for a quantitative understanding of energetics of the carbohydrate-lectin interactions. Although carbohydrate NMR spectroscopy is useful for characterizing such conformational dynamics, it is often hampered by poor spectral resolution and the lack of recombinant technique to produce homogeneous glycoforms. To overcome these difficulties, we have recently developed a methodology for preparation of a homogeneous high-mannose-type oligosaccharide with 13C labeling using genetically engineered yeast strain. We herein successfully extended this method to overexpression of 13C-lebeled Man9GlcNAc2 (M9) using a newly engineered yeast strain with deletion of four genes involved in N-glycan processing. This enabled high-field NMR analyses of 13C-labeld M9 in comparison with its processing product M8B, which lacks the terminal mannose residue ManD2. Long-range NOE data indicated that the outer branches can interact with the core in both glycoforms and such foldback conformations are enhanced upon the removal of ManD2. The observed conformational variabilities might be associated with the lectins and the glycan-trimming enzymes.