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https://www.readbyqxmd.com/read/28077650/melanin-or-melanin-like-substance-interacts-with-the-n-terminal-portion-of-prion-protein-and-inhibits-abnormal-prion-protein-formation-in-prion-infected-cells
#1
Taichi Hamanaka, Keiko Nishizawa, Yuji Sakasegawa, Ayumi Oguma, Kenta Teruya, Hiroshi Kurahashi, Hideyuki Hara, Suehiro Sakaguchi, Katsumi Doh-Ura
Prion diseases are progressive fatal neurodegenerative illnesses caused by the accumulation of transmissible abnormal prion protein (PrP). To find treatments for prion diseases, we searched for substances from natural resources that inhibit abnormal PrP formation in prion-infected cells. We found that high-molecular-weight components from insect cuticle extracts reduced abnormal PrP levels. The chemical nature of these components was consistent with that of melanin. In fact, synthetic melanin produced from tyrosine or 3-hydroxy-l-tyrosine inhibited abnormal PrP formation...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28064545/androgen-receptor-activation-a-prospective-therapeutic-target-for-bladder-cancer
#2
Taichi Mizushima, Kathleen A Tirador, Hiroshi Miyamoto
Patients with non-muscle-invasive or muscle-invasive bladder cancer undergoing surgery and currently available conventional therapy remain having a high risk of tumor recurrence or progression, respectively. Novel targeted molecular therapy is therefore expected to improve patient outcomes. Meanwhile, substantially higher incidence of bladder cancer in men has prompted research on androgen-mediated androgen receptor (AR) signaling in this malignancy. Indeed, preclinical evidence has suggested that AR signaling plays an important role in urothelial carcinogenesis and tumor outgrowth as well as resistance to some of the currently available conventional non-surgical therapies...
January 9, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28041845/inverse-bayesian-inference-as-a-key-of-consciousness-featuring-a-macroscopic-quantum-logical-structure
#3
Yukio-Pegio Gunji, Shuji Shinohara, Taichi Haruna, Vasileios Basios
To overcome the dualism between mind and matter and to implement consciousness in science, a physical entity has to be embedded with a measurement process. Although quantum mechanics has been regarded as a candidate for implementing consciousness, nature at its macroscopic level is inconsistent with quantum mechanics. We propose a measurement-oriented inference system comprising Bayesian and inverse Bayesian inferences. While Bayesian inference contracts probability space, the newly defined inverse one relaxes the space...
December 29, 2016: Bio Systems
https://www.readbyqxmd.com/read/28038981/high-frequency-of-programmed-death-ligand-1%C3%A2-expression-in-emphysematous-bullae-associated-lung-adenocarcinomas
#4
Gouji Toyokawa, Kazuki Takada, Tatsuro Okamoto, Yuka Kozuma, Taichi Matsubara, Naoki Haratake, Shinkichi Takamori, Takaki Akamine, Masakazu Katsura, Fumihiro Shoji, Yoshinao Oda, Yoshihiko Maehara
OBJECTIVE: Emphysematous bullae (EB) are known to be associated with a high incidence of lung cancer; however, the reason for this has yet to be elucidated. The objective of the present study was to clarify the prevalence of programmed death-ligand-1 (PD-L1) expression in EB-associated lung adenocarcinomas. PATIENTS AND METHODS: A total of 369 patients with resected lung adenocarcinoma whose preoperative computed tomography findings were available for the examination of EB were analyzed for PD-L1 expression by immunohistochemistry and evaluated to determine the association between PD-L1 expression and EB-related adenocarcinomas...
December 9, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28031837/carcinomatous-pleuritis-and-pericarditis-accompanied-by-pulmonary-tuberculosis
#5
Munechika Hara, Shin-Ichiro Iwakami, Naohisa Matsumoto, Taichi Miyawaki, Ryo Wada, Kazuhisa Takahashi
Although both lung cancer and pulmonary tuberculosis (TB) commonly occur in clinical practice, little attention has been paid to their coexistence. A 62-year-old female was admitted with acute dyspnoea secondary to cardiac tamponade. During her admission, a mass lesion harbouring air bronchograms in the right upper lobe rapidly increased in size. Surgical lung, pericardial, and pleural specimens yielded TB from a nodule in the right upper lobe and lung adenocarcinoma from the pericardium and pleura. Anti-tuberculous therapy was administered and gefitinib was subsequently started after the positive identification of epidermal growth factor receptor (EGFR) mutation (exon 19 deletion)...
November 2016: Respirology Case Reports
https://www.readbyqxmd.com/read/28029774/the-structure-of-murine-n-1-acetylspermine-oxidase-reveals-molecular-details-of-vertebrate-polyamine-catabolism
#6
Tove Sjögren, Carola M Wassvik, Arjan Snijder, Anna Aagaard, Taichi Kumanomidou, Louise Barlind, Tim P Kaminski, Akiko Kashima, Takehiro Yokota, Ola Fjellström
N(1)-Acetylspermine oxidase (APAO) catalyzes the conversion of N(1)-acetylspermine or N(1)-acetylspermidine to spermidine or putrescine, respectively, with concomitant formation of N-acetyl-3-aminopropanal and hydrogen peroxide. Here we present the structure of murine APAO in its oxidized holo form and in complex with substrate. The structures provide a basis for understanding molecular details of substrate interaction in vertebrate APAO, highlighting a key role for an asparagine residue in coordinating the N(1)-acetyl group of the substrate...
January 12, 2017: Biochemistry
https://www.readbyqxmd.com/read/28025329/association-between-gwas-identified-lung-adenocarcinoma-susceptibility-loci-and-egfr-mutations-in-never-smoking-asian-women-and-comparison-with-findings-from-western-populations
#7
Wei Jie Seow, Keitaro Matsuo, Chao Agnes Hsiung, Kouya Shiraishi, Minsun Song, Hee Nam Kim, Maria Pik Wong, Yun-Chul Hong, H Dean Hosgood, Zhaoming Wang, I-Shou Chang, Jiu-Cun Wang, Nilanjan Chatterjee, Margaret Tucker, Hu Wei, Tetsuya Mitsudomi, Wei Zheng, Jin Hee Kim, Baosen Zhou, Neil E Caporaso, Demetrius Albanes, Min-Ho Shin, Lap Ping Chung, She-Juan An, Ping Wang, Hong Zheng, Yasushi Yatabe, Xu-Chao Zhang, Young Tae Kim, Xiao-Ou Shu, Young-Chul Kim, Bryan A Bassig, Jiang Chang, James Chung Man Ho, Bu-Tian Ji, Michiaki Kubo, Yataro Daigo, Hidemi Ito, Yukihide Momozawa, Kyota Ashikawa, Yoichiro Kamatani, Takayuki Honda, Hiromi Sakamoto, Hideo Kunitoh, Koji Tsuta, Shun-Ichi Watanabe, Hiroshi Nokihara, Yohei Miyagi, Haruhiko Nakayama, Shingo Matsumoto, Masahiro Tsuboi, Koichi Goto, Zhihua Yin, Jianxin Shi, Atsushi Takahashi, Akiteru Goto, Yoshihiro Minamiya, Kimihiro Shimizu, Kazumi Tanaka, Tangchun Wu, Fusheng Wei, Jason Y Y Wong, Fumihiko Matsuda, Jian Su, Yeul Hong Kim, In-Jae Oh, Fengju Song, Victor Ho Fun Lee, Wu-Chou Su, Yuh-Min Chen, Gee-Chen Chang, Kuan-Yu Chen, Ming-Shyan Huang, Pan-Chyr Yang, Hsien-Chih Lin, Yong-Bing Xiang, Adeline Seow, Jae Yong Park, Sun-Seog Kweon, Chien-Jen Chen, Haixin Li, Yu-Tang Gao, Chen Wu, Biyun Qian, Daru Lu, Jianjun Liu, Hyo-Sung Jeon, Chin-Fu Hsiao, Jae Sook Sung, Ying-Huang Tsai, Yoo Jin Jung, Huan Guo, Zhibin Hu, Wen-Chang Wang, Charles C Chung, Charles Lawrence, Laurie Burdett, Meredith Yeager, Kevin B Jacobs, Amy Hutchinson, Sonja I Berndt, Xingzhou He, Wei Wu, Junwen Wang, Yuqing Li, Jin Eun Choi, Kyong Hwa Park, Sook Whan Sung, Li Liu, Chang Hyun Kang, Lingmin Hu, Chung-Hsing Chen, Tsung-Ying Yang, Jun Xu, Peng Guan, Wen Tan, Chih-Liang Wang, Alan Dart Loon Sihoe, Ying Chen, Yi Young Choi, Jen-Yu Hung, Jun Suk Kim, Ho-Il Yoon, Qiuyin Cai, Chien-Chung Lin, In Kyu Park, Ping Xu, Jing Dong, Christopher Kim, Qincheng He, Reury-Perng Perng, Chih-Yi Chen, Roel Vermeulen, Junjie Wu, Wei-Yen Lim, Kun-Chieh Chen, John K C Chan, Minjie Chu, Yao-Jen Li, Jihua Li, Hongyan Chen, Chong-Jen Yu, Li Jin, Yen-Li Lo, Ying-Hsiang Chen, Joseph F Fraumeni, Jie Liu, Taiki Yamaji, Yang Yang, Belynda Hicks, Kathleen Wyatt, Shengchao A Li, Juncheng Dai, Hongxia Ma, Guangfu Jin, Bao Song, Zhehai Wang, Sensen Cheng, Xuelian Li, Yangwu Ren, Ping Cui, Motoki Iwasaki, Taichi Shimazu, Shoichiro Tsugane, Junjie Zhu, Gening Jiang, Ke Fei, Guoping Wu, Li-Hsin Chien, Hui-Ling Chen, Yu-Chun Su, Fang-Yu Tsai, Yi-Song Chen, Jinming Yu, Victoria L Stevens, Ite A Laird-Offringa, Crystal N Marconett, Dongxin Lin, Kexin Chen, Yi-Long Wu, Maria Teresa Landi, Hongbing Shen, Nathaniel Rothman, Takashi Kohno, Stephen J Chanock, Qing Lan
To evaluate associations by EGFR mutation status for lung adenocarcinoma risk among never-smoking Asian women, we conducted a meta-analysis of 11 loci previously identified in genome-wide association studies (GWAS). Genotyping in an additional 10,780 never-smoking cases and 10,938 never-smoking controls from Asia confirmed associations with eight known single nucleotide polymorphisms (SNPs). Two new signals were observed at genome-wide significance (P < 5 x 10(-8)), namely, rs7216064 (17q24.3, BPTF), for overall lung adenocarcinoma risk, and rs3817963 (6p21...
December 26, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/28018324/abundance-of-common-aerobic-anoxygenic-phototrophic-bacteria-in-a-coastal-aquaculture-area
#8
Yuki Sato-Takabe, Hironori Nakao, Takafumi Kataoka, Taichi Yokokawa, Koji Hamasaki, Kohei Ohta, Satoru Suzuki
Aerobic anoxygenic phototrophic bacteria (AAnPB) rely on not only heterotrophic but also phototrophic energy gain. AAnPB are known to have high abundance in oligotrophic waters and are the major portion of the bacterial carbon stock in the environment. In a yearlong study in an aquaculture area in the Uwa Sea, Japan, AAnPB, accounted for 4.7 to 24% of the total bacteria by count. Since the cell volume of AAnPB is 2.23 ± 0.674 times larger than the mean for total bacteria, AAnPB biomass is estimated to account for 10-53% of the total bacterial assemblage...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28008191/abnormal-urinalysis-on-day-7-in-patients-with-iga-vasculitis-henoch-sch%C3%A3-nlein-purpura
#9
Nozomu Kawashima, Jun-Ichi Kawada, Yuichi Nishikado, Yuma Kitase, Sanae Ito, Hideki Muramatsu, Yoshiaki Sato, Taichi Kato, Jun Natsume, Seiji Kojima
Rare progression to renal failure imposes a burden on children with IgA vasculitis (Henoch-Schönlein purpura, HSP). An abnormal urinalysis on day 7 (7d-UA) may be a surrogate marker for persistent nephritis, but this has not been established. We retrospectively analyzed the risk factors for persistent nephritis in a cohort of 138 children. Of 35 children with abnormal 7d-UA, 24 (69%) had an abnormal urinalysis 6 months after the diagnosis of HSP, which was significantly more than 6 of 103 children (6%) with normal 7d-UA (P < 0...
December 2016: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28004815/bmi1-positive-cells-in-the-lingual-epithelium-could-serve-as-cancer-stem-cells-in-tongue-cancer
#10
Toshihiro Tanaka, Naho Atsumi, Naohiro Nakamura, Hirotsugu Yanai, Yoshihiro Komai, Taichi Omachi, Kiyomichi Tanaka, Kazuhiko Ishigaki, Kazuho Saiga, Haruyuki Ohsugi, Yoko Tokuyama, Yuki Imahashi, Hiroko Hisha, Naoko Yoshida, Keiki Kumano, Kazuichi Okazaki, Hiroo Ueno
We recently reported that the polycomb complex protein Bmi1 is a marker for lingual epithelial stem cells (LESCs), which are involved in the long-term maintenance of lingual epithelial tissue in the physiological state. However, the precise role of LESCs in generating tongue tumors and Bmi1-positive cell lineage dynamics in tongue cancers are unclear. Here, using a mouse model of chemically (4-nitroquinoline-1-oxide: 4-NQO) induced tongue cancer and the multicolor lineage tracing method, we found that each unit of the tumor was generated by a single cell and that the assembly of such cells formed a polyclonal tumor...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27983978/o-glcnac-is-required-for-the-survival-of-primed-pluripotent-stem-cells-and-their-reversion-to-the-na%C3%A3-ve-state
#11
Taichi Miura, Shoko Nishihara
"Naïve" mouse embryonic stem cells (ESCs) are derived from pre-implantation embryos and possess pluripotency, the ability to differentiate into any cell type of the body. "Primed" mouse epiblast stem cells (EpiSCs) are also pluripotent but are derived from post-implantation embryos. ESC-derived EpiSCs (ESD-EpiSCs) are "primed" pluripotent stem cells and can revert to naïve reverted ESCs (rESCs). O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) is a posttranslational modification in the cytoplasm and nucleus...
October 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27977181/an-orally-active-bradykinin-b1-receptor-antagonist-engineered-as-a-bifunctional-chimera-of-sunflower-trypsin-inhibitor
#12
Yibo Qiu, Misako Taichi, Na Wei, Huan Yang, Kathy Qian Luo, James P Tam
An orally active and metabolically stable peptide TIBA was successfully engineered as a chimera by fusing an analgesic bradykinin receptor antagonist peptide and the trypsin inhibitory loop of sunflower trypsin inhibitor-1. As a fusion cyclic peptide, the metabolically labile analgesic peptide is protected from degradation by exopeptidases as well as the endopeptidases, and its serum half-life extended from <5 min to >6 h as a chimera. Moreover, the chimera TIBA was also found to be orally active in an animal pain model using a hot plate assay...
December 15, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27966527/five-colour-variants-of-bright-luminescent-protein-for-real-time-multicolour-bioimaging
#13
Kazushi Suzuki, Taichi Kimura, Hajime Shinoda, Guirong Bai, Matthew J Daniels, Yoshiyuki Arai, Masahiro Nakano, Takeharu Nagai
Luminescence imaging has gained attention as a promising bio-imaging modality in situations where fluorescence imaging cannot be applied. However, wider application to multicolour and dynamic imaging is limited by the lack of bright luminescent proteins with emissions across the visible spectrum. Here we report five new spectral variants of the bright luminescent protein, enhanced Nano-lantern (eNL), made by concatenation of the brightest luciferase, NanoLuc, with various colour hues of fluorescent proteins...
December 14, 2016: Nature Communications
https://www.readbyqxmd.com/read/27943102/clinicopathological-evaluation-of-sox10-expression-in-diffuse-type-gastric-adenocarcinoma
#14
Marin Kato, Hiroshi Nishihara, Hideyuki Hayashi, Taichi Kimura, Yusuke Ishida, Lei Wang, Masumi Tsuda, Mishie Ann Tanino, Shinya Tanaka
Sox10, one of the transcription factors, regulates Wnt/β-catenin signaling in diverse developmental processes in normal tissues. Sox10 is also expressed in variable solid tumors such as breast cancer, salivary tumor, hepatocellular carcinoma, ovarian tumor, nasopharyngeal carcinoma, prostate cancer, and digestive cancer. The role of Sox10 during tumorigenesis is still controversial, especially in digestive cancers; thus, we performed clinicopathological evaluation of Sox10 expression in 41 cases of diffuse-type gastric adenocarcinoma (DGA)...
January 2017: Medical Oncology
https://www.readbyqxmd.com/read/27936747/kinetic-analysis-of-the-methyl-%C3%AE-cyclodextrin-mediated-intervesicular-transfer-of-pyrene-labeled-phospholipids
#15
Taichi Sugiura, Keisuke Ikeda, Minoru Nakano
Methyl-β-cyclodextrin (MβCD) can transfer phospholipids between vesicles, and its transfer ability has been utilized for the preparation of asymmetric vesicle and lipid incorporation into culture cells. Nevertheless, a detailed kinetic analysis of the MβCD-mediated phospholipid transfer has not yet been carried out. We performed real-time monitoring of intervesicular lipid transfer by means of the fluorescence of pyrene-labeled phospholipids. Intermolecular excimer formation of the pyrene-labeled lipids in a membrane strongly depends on the local concentration of the fluorophore and decreases when the pyrene-labeled lipids are transferred from donor (fluorophore-containing) vesicles to acceptor (fluorophore-free) vesicles...
December 27, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27936243/can-wound-exudate-from-venous-leg-ulcers-measure-wound-pain-status-a-pilot-study
#16
Taichi Goto, Nao Tamai, Gojiro Nakagami, Aya Kitamura, Ayumi Naito, Masayuki Hirokawa, Chisako Shimokawa, Kazuo Takahashi, Junichi Umemoto, Hiromi Sanada
We investigated the associations between the self-evaluated pain status and two pain biomarker candidates, nerve growth factor and S100A8/A9, in exudate from venous leg ulcer to finally develop an objective pain evaluation method. Patients with venous leg ulcer participated in this cross-sectional observational study conducted between April and October 2014 at two medical facilities. During routine wound care, each participant self-evaluated their pain status at each examination using the 10-point numerical rating scale (present pain intensity) and the short-form McGill Pain Questionnaire 2 (continuous pain, intermittent pain, neuropathic pain, affective descriptors, and total score)...
2016: PloS One
https://www.readbyqxmd.com/read/27929119/magnetic-domains-driving-a-q-switched-laser
#17
Ryohei Morimoto, Taichi Goto, John Pritchard, Hiroyuki Takagi, Yuichi Nakamura, Pang Boey Lim, Hironaga Uchida, Mani Mina, Takunori Taira, Mitsuteru Inoue
A 10-mm cavity length magnetooptically Q-switched Nd:GdVO4 laser was demonstrated using a single-crystalline ferrimagnetic rare-earth iron garnet film. To design the Q-switching system, the magnetic, optical, and magnetooptical properties of the garnet film were measured. The diode pumped solid-state laser cavity was constructed using a 190-μm-thick garnet film with 58% transmittance. The garnet film had maze-shaped magnetic domains, and the domain walls disappeared when a field of over 200 Oe was applied...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27928134/developing-a-scale-to-measure-attachment-to-the-local-community-in-late-middle-aged-individuals
#18
Taichi Sakai, Junko Omori, Kazuko Takahashi, Yasuko Mitsumori, Maasa Kobayashi, Wakanako Ono, Toshie Miyazaki, Hitomi Anzai, Mika Saito
Objectives This study was conducted to develop a scale for measuring "attachment to the local community" for its use in health services. The scale is also intended to nurture new social relationships in late middle-aged individuals.Methods Thirty items were initially planned to be included in the scale to measure "attachment to the local community", according to a previous study that identified the concept. The study subjects were late middle-aged residents of City B in Prefecture A, located in Tokyo suburbs...
2016: [Nihon Kōshū Eisei Zasshi] Japanese Journal of Public Health
https://www.readbyqxmd.com/read/27919205/achieving-simplified-disease-activity-index-remission-in-patients-with-active-rheumatoid-arthritis-is-associated-with-subsequent-good-functional-and-structural-outcomes-in-a-real-world-clinical-setting-under-a-treat-to-target-strategy
#19
Fumio Hirano, Waka Yokoyama, Hayato Yamazaki, Koichi Amano, Atsushi Kawakami, Taichi Hayashi, Naoto Tamura, Shinsuke Yasuda, Hiroaki Dobashi, Takao Fujii, Satoshi Ito, Yuko Kaneko, Toshihiro Matsui, Yasuaki Okuda, Kazuyoshi Saito, Fumihito Suzuki, Ryusuke Yoshimi, Ryoko Sakai, Ryuji Koike, Hitoshi Kohsaka, Nobuyuki Miyasaka, Masayoshi Harigai
OBJECTIVE: To verify predictive validity of simplified disease activity index (SDAI) remission for subsequent functional and structural outcomes in real-world clinical settings under a treat-to-target strategy (T2T). METHODS: In this multicenter, prospective cohort study, T2T was implemented in rheumatoid arthritis (RA) patients with moderate-to-high disease activity. SDAI or clinical disease activity index (CDAI) was assessed every 12 weeks, and treatment was adjusted to achieve clinical remission or low disease activity (LDA)...
December 21, 2016: Modern Rheumatology
https://www.readbyqxmd.com/read/27890439/a-japanese-nationwide-multicenter-survey-on-perioperative-complications-of-corrective-fusion-for-elderly-patients-with-adult-spinal-deformity
#20
Yu Yamato, Yukihiro Matsuyama, Kazuhiro Hasegawa, Yoichi Aota, Tsutomu Akazawa, Takahiro Iida, Kazumasa Ueyama, Koki Uno, Tokumi Kanemura, Noriaki Kawakami, Toshiaki Kotani, Masashi Takaso, Jun Takahashi, Masato Tanaka, Hiroshi Taneichi, Taichi Tsuji, Hideo Hosoe, Joji Mochida, Takachika Shimizu, Ikuho Yonezawa, Kota Watanabe, Morio Matsumoto
BACKGROUND: Recently, corrective fusion surgery for patients with adult spinal deformity (ASD) has become common in Japan. This study aimed to clarify the status of surgeries for ASD in Japan, focusing on perioperative complications. A nationwide multicenter survey gathering information on surgically treated ASD patients was conducted by the committee for Adult Spinal Deformity of the Japanese Scoliosis Society. METHODS: This study was a review of retrospectively collected data from 18 spine scoliosis centers belonging to the Japanese Scoliosis Society...
November 24, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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