Katsuya Otori
Kitasato University
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Featured researches published by Katsuya Otori.
Pharmacy | 2018
Rie Kubota; Kiyoshi Shibuya; Yoichi Tanaka; Manahito Aoki; Megumi Shiomi; Wataru Ando; Katsuya Otori; Takako Komiyama
The Japanese pharmaceutical curriculum was extended from four to six years in 2006. Students now receive practical communication-skills training in their fourth year, before progressing to train in hospital and community pharmacies in their fifth year. Kitasato University School of Pharmacy, Tokyo, had established a program to meet these aims before the 2006 guidance. In the present study, we discuss and evaluate the features of this communication-skills training program. This study enrolled 242 fourth-year pharmacy students at Kitasato University. Students filled out a questionnaire survey after completing the laboratory element of their undergraduate education. As part of training, students were asked to obtain patient data from a model medical chart, before performing simulated patient interviews covering hospital admission and patient counseling. These simulations were repeated in a small group, and feedback was provided to students by both the simulated patient and the faculty after each presentation. It was found that students were able to develop their communication skills through this approach. Thus, an effective system of gradual and continuous training has been developed, which allows students to acquire clinical and practical communication skills.
Journal of Diabetes Investigation | 2018
Megumi Shiomi; Tesshu Takada; Yoichi Tanaka; Keiko Yajima; Akira Isomoto; Masaki Sakamoto; Katsuya Otori
Research has proved a correlation between glucagon‐like peptide‐1 receptor agonists (GLP‐1 RAs) and gastrointestinal adverse events. Predominantly, nausea and vomiting are frequent gastrointestinal adverse events that lead to the discontinuation of GLP‐1 RAs treatment. The present study aims to investigate clinical factors related to nausea and vomiting, considering diabetic complications and agents affecting the gastrointestinal tract, such as proton pump inhibitors (PPIs) and histamine‐2 receptor antagonists (H2RAs), in patients with type 2 diabetes treated with GLP‐1 RAs.
Clinica Chimica Acta | 2018
Yoichi Tanaka; Hiroaki Yokomori; Katsuya Otori
BACKGROUND Ribavirin (RBV) is an antiviral agent and the primary component for chronic hepatitis C (CHC) therapy. Hemolytic anemia is limitation for RBV treatment. Inosine triphosphatase (ITPA) activity has been associated with severity of RBV-induced anemia. However, changes in ITPA activity during CHC therapy are unknown. The aim of this study was to measure the time-dependent change in ITPA activity over the RBV treatment. METHODS Forty-two patients with CHC were evaluated for ITPA activity over the course of RBV treatment. RESULTS The median value of ITPA activity at start of RBV treatment was 134.2 μmol/h/g hemoglobin (Hb; range, 26.3-251.0 μmol/h/g Hb). The ITPA activity values at 4, 8, and 12 weeks during RBV treatment were 143.2, 202.2, and 225.7 μmol/h/g Hb, respectively, and these ITPA values were significantly elevated compared with the start of treatment (p < 0.001). In patients with ITPA variants, patients with anemia (Hb < 10 g/dL) had greater elevated ITPA activities compared with patients without anemia at 12 weeks. CONCLUSION Our findings indicate that ITPA activities are elevated with RBV therapy, and this elevation may be a risk of anemia in late therapeutic phase in patients that began with low ITPA activity.
Clinical and molecular hepatology | 2017
Wataru Ando; Hiroaki Yokomori; Nobuhiro Tsutsui; Eigoro Yamanouchi; Yutaka Suzuki; Masaya Oda; Yutaka Inagaki; Katsuya Otori; Isao Okazaki
Background/Aims Nonalcoholic steatohepatitis (NASH) is prevalent in both economically developed and developing countries. Twenty percent of NASH progresses to cirrhosis with/without hepatocellular carcinoma, and there is an urgent need to find biomarkers for early diagnosis and monitoring progression of the disease. Using immunohistochemical and immunoelectron microscopic examination we previously reported that expression of matrix metalloproteinase-1 (MMP-1) increased in monocytes, Kupffer cells and hepatic stellate cells in early stage NASH. The present study investigated whether serum MMP-1 levels reflect disease activity and pharmaceutical effects in NASH patients. Methods We measured the serum levels of MMPs, tissue inhibitors of metalloproteinases (TIMPs), and several cytokines/chemokines in patients with histologically proven early and advanced stages of NASH and compared them with those in healthy controls. Results Serum MMP-1 levels in stage 1 fibrosis, but not in the more advanced fibrosis stages, were significantly higher than in healthy controls (P=0.019). There was no correlation between serum MMP-1 level and fibrosis stage. Serum MMP- 1 levels in NASH patients represented disease activity estimated by serum aminotransferase values during the follow-up period. In contrast, MMP-2, MMP-9 and TIMPs did not change with disease activity. Consistent with the finding that MMP-1 is expressed predominantly in monocytes and Kupffer cells, serum levels of monocyte chemotactic protein-1 and granulocyte-colony stimulating factor were significantly increased in NASH with stage 1 fibrosis. Conclusions These results suggest that serum MMP-1 levels represent disease activity and may serve as a potential biomarker for monitoring the progression of NASH.
Japanese Journal of Pharmaceutical Health Care and Sciences | 2005
Katsuya Otori; Yuko Taguchi; Kazuo Yago
Journal of Pharmaceutical Health Care and Sciences | 2017
Junichi Mukai; Yuta Tsuge; Michiko Yamada; Katsuya Otori; Koichiro Atsuda
Japanese Journal of Hospital Pharmacy | 1996
Kazuo Yago; Hajime Matsubara; Katsuya Otori; Masahiko Sakuma; Shigehiko Shimada
Journal of Clinical Medicine Research | 2017
Wataru Ando; Hiroaki Yokomori; Katsuya Otori; Masaya Oda
Japanese Journal of Pharmaceutical Health Care and Sciences | 2012
Jun'ichi Mohri; Katsuya Otori; Yuko Taguchi; Kumi Kimura; Yuka Ishida; Chizuru Watanabe; Rumiko Kondo; Hajime Matsubara; Kazuo Yago
Japanese Journal of Pharmaceutical Health Care and Sciences | 2007
Yuji Yoshiyama; Katsuya Otori; Koichiro Atsuda; Kazuo Yago; Haruo Fujikane; Kentaro Ogata; Koujiro Futagami