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Daiki Tabata, Haruo Isoda, Kaori Kato, Hiroki Matsubara, Takafumi Kosugi, Takashi Kosugi, Masaki Terada, Atsushi Fukuyama, Yoshiaki Komori, Shinji Naganawa
We developed a method of velocimetry based on an optical flow method using quantitative analyses of tagged magnetic resonance (MR) images (tagged MR-optical flow velocimetry, tMR-O velocimetry). The purpose of our study was to examine the accuracy of measurement of the proposed tMR-O velocimetry. We performed retrospective pseudo-electrocardiogram (ECG) gating tagged cine MR imaging on a rotating phantom. We optimized imaging parameters for tagged MR imaging, and validated the accuracy of tMR-O velocimetry...
April 12, 2018: Radiological Physics and Technology
Hiromichi Ishiyama, Hideyasu Tsumura, Shogo Kawakami, Takefumi Satoh, Akane Sekiguchi, Ken-Ichi Tabata, Masatsugu Iwamura, Kazushige Hayakawa
Purpose: To evaluate the efficacy of a cold spot compensation technique using a combination of trans-rectal ultrasonography (TRUS) and computed tomography (CT) for permanent interstitial prostate brachytherapy. Material and methods: Sixty-five patients were treated with the cold spot compensation technique using TRUS-CT fusion. The prescribed dose was set at 145 Gy. The dose to 90% of prostate volume (D90 ) was planned to be within 195 Gy (134%) and 205 Gy (141%)...
February 2018: Journal of Contemporary Brachytherapy
Ricardo Borges Viana, Claudio Andre Barbosa de Lira, João Pedro Araújo Naves, Victor Silveira Coswig, Fabrício Boscolo Del Vecchio, Paulo Gentil
PURPOSE: The great popularity of the Tabata Protocol is accompanied by an uncomfortable lack of consistency and criteria in its use, which results in many controversies in the results obtained from its utilization. The purpose of this study was to analyse the studies that based their interventions on the Tabata Protocol and to provide a critical analysis of its use. METHODS: A systematic literature search was conducted in PubMed and Scopus. All articles published between 1996 and October 2017 that cited at least one of the original studies of Tabata et al...
April 2, 2018: Clinical Physiology and Functional Imaging
Hiromasa Tabata, Akihiro Koinui, Atsushi Ogura, Daisuke Nishihara, Hiroaki Yamamoto
Paired box (Pax) 6, a member of the Pax family of transcription factors, contains two DNA-binding domains, called the paired domain (PD) and the homeodomain (HD), and plays pivotal roles in development of structures such as the eye, central nervous system and pancreas. Pax6 is a major developmental switching molecule because, for example, ectopic expression of the Pax6 gene can induce ectopic whole eye development. Intensive research has been devoted to elucidating the molecular mechanism(s) involved in the function(s) of Pax6, but many issues remain unexplained...
April 2, 2018: Genes & Genetic Systems
Shimul Halder, Aiko Tabata, Yoshiki Seto, Hideyuki Sato, Satomi Onoue
Carvedilol (CAR) belongs to biopharmaceutics classification system class-II drugs, with poor aqueous solubility and pH-dependent solubility. The present study aimed to develop a novel amorphous solid dispersion (ASD) of CAR with acidic counter ions for pH modifications in microenvironment to improve the pharmacokinetic properties under hypochlorhydric conditions. CAR-ASD was prepared by freeze-drying in combination with counter ions and hydroxypropyl cellulose, and their physicochemical properties including dissolution behavior, storage stability, and photostability were characterized...
April 2, 2018: Biopharmaceutics & Drug Disposition
Tatsuhiko Furukawa, Sho Tabata, Masatatsu Yamamoto, Kohichi Kawahara, Yoshinari Shinsato, Kentaro Minami, Michiko Shimokawa, Shin-Ichi Akiyama
Thymidine phosphorylase (TP) is a rate-limiting enzyme in thymidine catabolism. TP has several important roles in biological and pharmacological mechanisms; importantly TP acts as an angiogenic factor and one of metabolic enzymes of fluoro-pyrimidine anticancer agents and modifies inflammation. Improving our understanding of the characteristics and functions of TP has led to the development of novel TP-based anticancer therapies. We recently reported that TP-dependent thymidine catabolism contributes to tumour survival in low nutrient conditions and the pathway from thymidine to the glycolysis cascade is affected in the context of physiological and metabolic conditions...
March 28, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
Tábata Larissa S Pólvora, Átila Vinícius V Nobre, Camila Tirapelli, Mário Taba, Leandro Dorigan de Macedo, Rodrigo Carvalho Santana, Bruno Pozzetto, Alan Grupioni Lourenço, Ana Carolina F Motta
Current studies show that, even in the era of antiretroviral therapies, HIV-1 infection is associated with more severe and frequent refractory chronic periodontitis. Areas covered: This review, based on a systematic analysis of the literature, intends to provide an update on factors that may be involved in the pathogenesis of periodontal disease in HIV-1-infected patients, including local immunosuppression, oral microbial factors, systemic inflammation, salivary markers, and the role of gingival tissue as a possible reservoir of HIV-1...
March 29, 2018: Expert Review of Clinical Immunology
Yuta Yoshida, Fuminori Kawabata, Yuko Kawabata, Shotaro Nishimura, Shoji Tabata
Umami taste is one of the five basic tastes (sweet, umami, bitter, sour, and salty), and is elicited by l-glutamate salts and 5'-ribonucleotides. In chickens, the elucidation of the umami taste sense is an important step in the production of new feedstuff for the animal industry. Although previous studies found that chickens show a preference for umami compounds in long-term behavioral tests, there are limitations to our understanding of the role of the umami taste sense in chicken oral tissues because the long-term tests partly reflected post-ingestive effects...
March 24, 2018: Physiology & Behavior
Michiaki Okuda, Yuki Fujita, Takuya Katsube, Hiromasa Tabata, Katsumi Yoshino, Michio Hashimoto, Hachiro Sugimoto
BACKGROUND: Alzheimer's disease (AD) is the most common form of dementia and the number of AD patients continues to increase worldwide. Components of the germ layer and bran of Brown rice (BR) help maintain good health and prevent AD. Because the germ layer and bran absorb little water and are very hard and difficult to cook, they are often removed during processing. To solve these problems, in this study, we tried to use a high-pressure (HP) technique. METHODS: We produced the highly water pressurized brown rice (HPBR) by pressurizing BR at 600 MPa, and then we fed it to an AD mouse model, senescence-accelerated mouse prone 8, to investigate the therapeutic effects of HPBR on cognitive dysfunction by Y-maze spatial memory test...
March 27, 2018: BMC Complementary and Alternative Medicine
Taizou Hirano, Shinya Ohkouchi, Naoki Tode, Makoto Kobayashi, Manabu Ono, Teruyuki Satoh, Yoichiro Mitsuishi, Akira Watanabe, Masao Tabata, Toshiya Irokawa, Hiromasa Ogawa, Hisatoshi Sugiura, Toshiaki Kikuchi, Keiichi Akasaka, Ryushi Tazawa, Yoshikazu Inoue, Koh Nakata, Hajime Kurosawa, Masakazu Ichinose
Nitric oxide and alveolar macrophage inflammation
January 2018: ERJ Open Research
Munetaka Takekuma, Mototsugu Shimokawa, Shin Nishio, Hideo Omi, Tsutomu Tabata, Yuji Takei, Kaei Nasu, Yoshiyuki Takahashi, Shinji Toyota, Yoshikazu Ichikawa, Atsushi Arakawa, Fuminori Ito, Hiroshi Tsubamoto, Taisuke Mori, Yasuyuki Hirashima, Kimihiko Ito
The purpose of this phase II trial was to assess the efficacy and toxicity of paclitaxel and nedaplatin (TN) as the initial postoperative adjuvant chemotherapy for uterine cervical cancer with lymph node metastases (LNM). Patients with FIGO stage IB1-IIA2 squamous cell carcinoma of the uterine cervix were enrolled. Histological confirmation of LNM was mandatory. Intravenous paclitaxel at 175 mg/m2 and nedaplatin at 80 mg/m2 were administered every 28-day cycle, of which there were five cycles after radical hysterectomy...
March 25, 2018: Cancer Science
Yoshio Tanaka, Yusuke Hamamoto, Aizezi Niyazi, Tomohisa Nagasao, Masaki Ueno, Yasuhiko Tabata
AIMS: We investigated the reproducibility of creating a vascularized tissue flap in an in vivo tissue engineering chamber by incubating a vascular pedicle imbedded in a collagen sponge with activated platelet-rich plasma (aPRP) and basic fibroblast growth factor (bFGF). METHODS: Collagen sponge soaked with saline (control group), bFGF (Group 1), aPRP (Group 2), and aPRP/controlled release bFGF (Group 3) was implanted with a saphenous arteriovenous pedicle into a tissue engineering chamber, located subcutaneously in the groin of rabbits...
March 7, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Yuichiro Arima, Seiji Hokimoto, Noriaki Tabata, Osamu Nakagawa, Asahi Oshima, Yosuke Matsumoto, Takahiro Sato, Toshifumi Mukunoki, Jun Otani, Masanobu Ishii, Michie Uchikawa, Eiichiro Yamamoto, Yasuhiro Izumiya, Koichi Kaikita, Hisao Ogawa, Koichi Nishiyama, Kenichi Tsujita
BACKGROUND: Collateral arteries provide an alternative blood supply and protect tissues from ischemic damage in patients with peripheral artery disease. However, the mechanism of collateral artery development is difficult to validate. METHODS AND RESULTS: Collateral arteries were visualized using micro-x-ray computed tomography. Developmental characteristics were assessed using confocal microscopy. We conducted a single-center, retrospective, observational study and assessed the dilatation of collateral arteries on ischemic sides...
March 23, 2018: Journal of the American Heart Association
Yoshiaki Miyazaki, Nobuyuki Tabata, Tomomi Taroura, Kenji Shinozaki, Yuichiro Kubo, Eriko Tokunaga, Kenichi Taguchi
We propose a computer-aided diagnostic (CAD) system that uses time-intensity curves to distinguish between benign and malignant mammary tumors. Many malignant tumors show a washout pattern in time-intensity curves. Therefore, we designed a program that automatically detects the position with the strongest washout effect using the technique, such as the subtraction technique, which extracts only the washout area in the tumor, and by scanning data in 2×2 pixel region of interest (ROI). Operation of this independently developed program was verified using a phantom system that simulated tumors...
2018: Nihon Hoshasen Gijutsu Gakkai Zasshi
Sanae Tabata, Yu Kitago, Yuki Fujii, Emiko Mihara, Keiko Tamura-Kawakami, Naoko Norioka, Katsu Takahashi, Mika K Kaneko, Yukinari Kato, Junichi Takagi
Peptide-based affinity tags are commonly used in recombinant production/purification of proteins, and often preceded or followed by a protease recognition sequence to allow tag removal. We describe a rat monoclonal antibody 2H5 recognizing an undecapeptide tag called "eTev", which contains a recognition sequence for Tobacco Etch Virus (TEV) protease. In the crystal structure of 2H5-eTev complex, the long eTev peptide assumes compact α-helical conformation in the binding groove, exposing both ends to the solution...
March 14, 2018: Protein Expression and Purification
Junya Kitadani, Toshiyasu Ojima, Hiromitsu Iwamoto, Hirotaka Tabata, Mikihito Nakamori, Masaki Nakamura, Keiji Hayata, Masahiro Katsuda, Masayasu Miyajima, Hiroki Yamaue
Clinical application of dendritic cell (DC) vaccine therapy is hindered by the need for a large quantity of DCs generated from peripheral blood monocytes of the patient. We investigated whether genetically modified human induced pluripotent stem cell (iPSC)-derived dendritic cells (hiPSDCs) expressing carcinoembryonic antigen (CEA) could induce CEA-specific cytotoxic T cells in a human model and whether genetically modified mouse iPSDCs (miPSDCs) expressing CEA showed an actual antitumor effect using a CEA transgenic mouse model...
March 15, 2018: Scientific Reports
Jon Shuman, Tyler Xavier Giles, Leslie Carroll, Kenji Tabata, Austin Powers, Sang-Jin Suh, Laura Silo-Suh
Pseudomonas aeruginosa causes acute and chronic human infections and is the major cause of morbidity and mortality in cystic fibrosis (CF) patients. We previously determined that the sn-glycerol-3-phosphate dehydrogenase encoded by glpD plays a larger role in P. aeruginosa physiology beyond its role in glycerol metabolism. To better understand the effect of a glpD mutation on P. aeruginosa physiology we compared the transcriptomes of P. aeruginosa strain PAO1 and the PAO1ΔglpD mutant using RNA-seq analysis...
March 13, 2018: Microbiology
Satoshi Kondo, Hiroyuki Kakihata, Yosuke Nishida, Yuko Furuno, Yumiko Kobayashi, Hidehiro Tabata, Makoto Nomura
We conducted a post-marketing observational study to investigate the safety and effectiveness of eldecalcitol for the treatment of osteoporosis in a Japanese clinical setting. The observation period was 12 months for women and 36 months for men. The final results for the female patients have already been published. In this article, the final results for the male patients are reported. A total of 470 male osteoporosis patients were enrolled. The safety analysis set included 431 patients (mean age, 76.8 years; mean ± SD follow-up period, 631...
March 12, 2018: Journal of Bone and Mineral Metabolism
Otavio Cabral-Marques, Tabata Takahashi França, Ashraf Al-Sbiei, Lena Friederike Schimke, Taj Ali Khan, Claudia Feriotti, Tania Alves da Costa, Osvaldo Reis Junior, Cristina Worm Weber, Janaíra Fernandes Ferreira, Fabiola Scancetti Tavares, Claudia Valente, Regina Sumiko Watanabe Di Gesu, Asif Iqbal, Gabriela Riemekasten, Gustavo Pessini Amarante-Mendes, José Alexandre Marzagão Barbuto, Beatriz Tavares Costa-Carvalho, Paulo Vitor Soeiro Pereira, Maria J Fernandez-Cabezudo, Vera Lucia Garcia Calich, Luigi D Notarangelo, Troy R Torgerson, Basel K Al-Ramadi, Hans D Ochs, Antonio Condino-Neto
BACKGROUND: Patients with X-linked Hyper-IgM syndrome (X-HIGM) due to CD40 ligand (CD40L) deficiency often present episodic, cyclic or chronic neutropenia, suggesting abnormal neutrophil development in the absence of CD40L-CD40 interaction. However, even when not neutropenic and despite immunoglobulin (Ig) replacement therapy, CD40L-deficient patients are susceptible to life-threatening infections caused by opportunistic pathogens, suggesting impaired function of phagocytes and the need of novel therapeutic approaches...
March 5, 2018: Journal of Allergy and Clinical Immunology
Junko Arakawa, Tomoo Nagai, Mai Tahara, Hirotsugu Tabata
A 43-year-old asymptomatic male patient with a positive stress myocardial perfusion imaging result was admitted to our institution. Although no organic lesion was detected by 64-row coronary computed tomography angiography (CCTA), invasive coronary angiography revealed a unique anatomy with a long lesion in the middle of the left anterior descending artery. Optical frequency domain imaging (OFDI) demonstrated the details of the recanalized occlusion with coronary dissection. OFDI provides in vivo coronary images with high spatial resolution and better three-dimensional reconstructions and supports invasive coronary angiography to elucidate infinitesimal and complicated intraluminal morphology that might be missed by CCTA alone...
December 25, 2017: Annals of Vascular Diseases
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