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Yoshiko Ramirez Ueno,Tsutomu Tamada,Satoru Takahashi,Utaru Tanaka,Keitaro Sofue,Tomonori Kanda,Munenobu Nogami,Yoshiharu Ohno,Nobuyuki Hinata,Masato Fujisawa,Takamichi Murakami 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.5
Computed diffusion-weighted MRI is a recently proposed post-processing technique that produces b-value images from diffusion-weighted imaging (DWI), acquired using at least two different b-values. This article presents an argument for computed DWI for prostate cancer by viewing four aspects of DWI: fundamentals, image quality and diagnostic performance, computing procedures, and future uses.
Yoshiko Takayama,Takashi Tanaka,Koko Oikawa,Naoki Fukano,Mieko Goto,Takashi Takahashi 대한진단검사의학회 2018 Annals of Laboratory Medicine Vol.38 No.2
Guidelines recommend that clinical laboratories perform phenotypic tests (nitrocefin-based test and penicillin 10-U [P10] or 1-U [P1] zone edge tests) to detect penicillinase in Staphylococcus aureus isolates. This study aimed to assess the prevalence of blaZ encoding penicillinase and perform various phenotypic tests in S. aureus isolates from Japan. We prospectively collected 200 methicillin-susceptible S. aureus isolates from June 2015 to January 2016 and performed six phenotypic tests (nitrocefin-based test, P10 zone edge test/P10 diffusion test, penicillin 2-U [P2] zone edge test/P2 diffusion test, and cloverleaf test) on each sample.
Cell Lineage, Self-Renewal, and Epithelial-to-Mesenchymal Transition during Secondary Neurulation
Kawachi, Teruaki,Tadokoro, Ryosuke,Takahashi, Yoshiko The Korean Neurosurgical Society 2021 Journal of Korean neurosurgical society Vol.64 No.3
Secondary neurulation (SN) is a critical process to form the neural tube in the posterior region of the body including the tail. SN is distinct from the anteriorly occurring primary neurulation (PN); whereas the PN proceeds by folding an epithelial neural plate, SN precursors arise from a specified epiblast by epithelial-to-mesenchymal transition (EMT), and undergo self-renewal in the tail bud. They finally differentiate into the neural tube through mesenchymal-to-epithelial transition (MET). We here overview recent progresses in the studies of SN with a particular focus on the regulation of cell lineage, self-renewal, and EMT/MET. Cellular mechanisms underlying SN help to understand the functional diversity of the tail in vertebrates.
Effectiveness of Solution with 5% Detergent for Cleaning Transnasal Esophagogastroduodenoscopy Lens
Yoshinori Komazawa,Mika Yuki,Nobuhiko Fukuba,Yoshiya Kobayashi,Hitomi Ishitobi,Sayaka Nakashima,Makoto Nagaoka,Yoshiko Takahashi,Toshihiro Shizuku 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.2
Background/Aims: Unsedated transnasal esophagogastroduodenoscopy (EGD) is affected by a poor scope lens-cleaning function. We have previously reported good, albeit limited, effects of an oolong tea washing solution; here, we evaluated the effectiveness of a 5%lens cleaning solution for cleaning an EGD lens. Methods: Five percent lens cleaning solution (C), 5% dimethicone solution (D), and distilled water (W) were prepared. Study I:Lenses were soiled with pork grease, washed with each washing solution, and their image quality was judged. Study II: Patients (n=996)scheduled for transnasal EGD were randomly assigned to the C- or W-group. Lens cleanliness level, washing solution volume used,and endoscopist stress due to lens contamination were determined. Results: Study I: The image quality of the lenses washed with (C) was significantly superior. (D) was clinically unsuitable because ofspray nozzle clogging. Study II: Lens cleaning in the C-group was significantly superior (p<0.0001) and the solution volume requiredwas significantly reduced (p<0.0001), while endoscopist stress was also lower (p<0.0001). Conclusions: For transnasal small-caliber EGD, the present 5% lens cleaning solution provided good visibility. It features a highdetergency level and is simple to formulate for therapeutic endoscopy applications, such as endoscopic submucosal dissection.