1,366 results on '"A. Fukazawa"'
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2. A single mutation in the E2 glycoprotein of hepatitis C virus broadens the claudin specificity for its infection
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Yoshitaka Shirasago, Hidesuke Fukazawa, Shotaro Nagase, Yoshimi Shimizu, Tomoharu Mizukami, Takaji Wakita, Tetsuro Suzuki, Hideki Tani, Masuo Kondoh, Takuya Kuroda, Satoshi Yasuda, Yoji Sato, Kentaro Hanada, and Masayoshi Fukasawa
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Medicine ,Science - Abstract
Abstract Entry of the hepatitis C virus (HCV) into host cells is a multistep process mediated by several host factors, including a tight junction protein claudin-1 (CLDN1). We repeatedly passaged HCV-JFH1-tau, an HCV substrain with higher infectivity, on Huh7.5.1-8 cells. A multi-passaged HCV-JFH1-tau lot was infectious to CLDN1-defective S7-A cells, non-permissive to original HCV-JFH1-tau infection. We identified a single mutation, M706L, in the E2 glycoprotein of the HCV-JFH1-tau lot as an essential mutation for infectivity to S7-A cells. The pseudovirus JFH1/M706L mutant could not infect human embryonic kidney 293 T (HEK293T) cells lacking CLDN family but infected HEK293T cells expressing CLDN1, CLDN6, or CLDN9. Thus, this mutant virus could utilize CLDN1, and other CLDN6 and CLDN9, making HCV possible to infect cells other than hepatocytes. iPS cells, one of the stem cells, do not express CLDN1 but express CLDN6 and other host factors required for HCV infection. We confirmed that the HCV-JFH1-tau-derived mutant with an M706L mutation infected iPS cells in a CLDN6-dependent manner. These results demonstrated that a missense mutation in E2 could broaden the CLDN member specificity for HCV infection. HCV may change its receptor requirement through a single amino acid mutation and infect non-hepatic cells.
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- 2022
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3. National trends in the outcomes of subarachnoid haemorrhage and the prognostic influence of stroke centre capability in Japan: retrospective cohort study
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Satoshi Suzuki, Kenji Yamamoto, Hiroaki Tanaka, Hiroshi Ozawa, Yuji Okamoto, Tatsuya Abe, Hidenori Suzuki, Akiko Kada, Shigeki Nishino, Nobuyuki Sakai, Kunihiro Nishimura, Tomoyoshi Oikawa, Takanari Kitazono, Hiroshi Tanaka, Daisuke Onozuka, Akihito Hagihara, Hiroshi Ooyama, Akira Watanabe, Shinichi Yoshimura, Toru Iwama, Hiroki Sato, Satoshi Ushikoshi, Kiyohiro Houkin, Nobuhiro Mikuni, Naoyuki Nakao, Michio Nakamura, Nanako Tamiya, Naofumi Isono, Koji Iihara, Yutaka Yamaguchi, Kuniaki Ogasawara, Osamu Onodera, Yusaku Nakamura, Naoki Hayashi, Akira Takada, Masayuki Ezura, Akio Hyodo, Shigeru Miyachi, Susumu Miyamoto, Yuji Matsumaru, Ichiro Nakahara, Tomoaki Terada, Kazunari Yoshida, Ai Kurogi, Ataru Nishimura, Yoshiaki Shiokawa, Koichi Arimura, Kaoru Kurisu, Fusao Ikawa, Kenji Ohata, Kyoichi Nomura, Nobuhito Saito, Hiroaki Fujiwara, Susumu Suzuki, Masanori Isobe, Soshiro Ogata, Takeshi Matsuoka, Junichiro Satomi, Takashi Matsumoto, Hiroyuki Nakase, Yasunari Niimi, Manabu Kinoshita, Mamoru Murakami, Masaaki Uno, Junichi Iida, Takashi Matsuoka, Tatsuya Sasaki, Shinichi Wakabayashi, Hiroki Toda, Hideki Sakai, Hajime Ohta, Osamu Yamamura, Hideyuki Ohnishi, Hiroko Oyama, Junichi Ono, Izumi Nagata, Hiroharu Kataoka, Ryota Kurogi, Hajime Arai, Atsuo Yoshino, Tsuyoshi Ohta, Hiroshi Sugimori, Hidehiro Hirabayashi, Hiroyuki Masaoka, Satoshi Yamamoto, Hideki Murakami, Kazuhiko Nozaki, Hiroyuki Matsumoto, Yuichiro Tanaka, Takahisa Mori, Keizo Yasui, Akira Takahashi, Ichiro Suzuki, Sachio Suzuki, TAKASHI YOSHIDA, Masanori Morimoto, Tetsuya Ueba, Hiromu Hadeishi, Masaki Chin, Michihiro Kohno, Hitoshi Fukuda, Toru Nishi, Kazunari Koga, Toshihiko Wakabayashi, Hiroki Ohkuma, Kazuhiro Hongo, Hiroshi Nakane, Kazumi Nitta, Satoshi Utsuki, Toshihiko Iuchi, Nice Ren, Hidefuku Gi, Kensuke Kawai, Masayuki Ishihara, Eiji Kohmura, Yoshihiro Nishiura, Kazutaka Yatsushiro, Kensaku Yoshida, Atsushi Tominaga, Masayuki Sumida, Hidenori Yoshida, Atsushi Sato, Takashi Inoue, Hiroaki Shimizu, Eiichiro Kamatsuka, Makoto Ichinose, Naoya Takeda, Tsuyoshi Inoue, Hidekazu Takahashi, Satoshi Kuroda, Toshiaki Osato, Nobutaka Horie, Isao Date, Yoichiro Hashimoto, Haruhiko Hoshino, Takafumi Shimogawa, Koji Yoshimoto, Teiji Tominaga, Isao Sasaki, Kazuo Kitazawa, Minoru Saitoh, Hitoshi Saito, Minoru Asahi, Makoto Goda, Atsuhito Takemura, Masaaki Shibukawa, Isao Fuwa, Saburo Watanabe, Seiko Kataoka, Koji Takasaki, Kouji Shiga, Kensuke Hayashida, Ryunosuke Uranishi, Chiaki Ito, Kenji Wakui, Takashi Saegusa, Isao Kitahara, Yasushi Ejima, Satoru Hayashi, Kazuyoshi Hattori, Shinji Okita, Toshikazu Ichihashi, Tsugumichi Ichioka, Shinichi Shirakami, Teruo Kimura, Tomonori Kobayashi, Kanehisa Kohno, Kazunori Yamanaka, Akira Morooka, Nozomi Mori, Hideo Kunimine, Masahiro Satoh, Syougo Imae, Hirochiyo Wada, Masanori Kabuto, Katsuyuki Hirakawa, Isao Inoue, Kiyoshi Kazekawa, Masani Nonaka, Kouzou Fukuyama, Shigenari Kin, Kiyoshi Saito, Yoichi Watanabe, Tadashi Arisawa, Kou Takahashi, Tetsuya Tanigawara, Junki Ito, Kei Hisada, Makoto Takeda, Jun Niwa, Mikio Nishiya, Shuji Hayashi, Ichiro Fujishima, Teiji Nakayama, Yoshihiko Watanabe, Koichirou Matsukado, Takamichi Yuguchi, Tadahisa Shono, Hiroyuki Nishimura, Jyunya Hayashi, Keisuke Migita, Kazuhiro Yokoyama, Hirotoshi Ohtaka, Takata Hisashi, Takamitsu Uchizawa, Naoki Shinohara, Mitsunobu Kaijima, Junkoh Yamamoto, Yoshio Sakagami, Hideo Aihara, Takayuki Sakaki, Keishi Fujita, Sumio Kobayashi, Nobuaki Momozaki, Masahito Hara, Akazi Kazunori, Fumitaka Miya, Hisato Minamide, Shinichiro Kurokawa, Syuichi Ishikawa, Naohisa Miura, Shinya Noda, Shoji Mashiyama, Shinji Amano, Takayuki Sugawara, Yukihiko Shimizu, Keiichi Saito, Kazuyuki Miura, Akinori Yabuta, Tatumi Yamanome, Hiroshi Seto, Makoto Hasebe, Hikaru Mizobuchi, Junkoh Sasaki, Shin Tsuruoka, Keiichi Nishimaki, Katsumi Takizawa, Hitoshi Tsugu, Nozomi Suzuki, Takeshi Kohno, Shu Hasegawa, Ken Asakura, Masaki Miyatake, Hiromu Konno, Katsunobu Takenaka, Akira Ikeda, Keizou Yamamoto, Keigo Matsumoto, Satoshi Inoha, Masaki Morisige, Kunihiko Harada, Hirofumi Hiyama, Yasuaki Takeda, Taturou Mori, Takekazu Akiyama, Osamu Okuda, Kazuaki Awamori, Naoki Shirasaki, Kimihiro Yoshino, Atsushi Shindo, Kazuho Hirahara, Shunichi Tanaka, Teruaki Kawano, Kazunori Arita, Hiroaki Sawaura, Yoichi Uozumi, Masahiko Tanaka, Shunsuke Shiraga, Shuji Sato, Mitsutoshi Nakada, Kimihisa Kinoshita, Nakazawa Kazutomo, Yasuhiro Fujimoto, Kunikazu Yoshimura, Masaaki Iwase, Shinichi Yagi, Atsushi Tsuchiya, Junichi Harashina, Sadao Kaneko, Naoto Kuwayama, Junya Hayashi, Masayuki Sasou, Sotaro Higashi, Masakazu Kitahara, Sumio Suda, Amami Kato, Satoshi Magarisawa, Kenji Hashimoto, Hirotoshi Hamaguchi, Tomohiko Satou, Masaru Idei, Haruhisa Tsukamoto, Toshihiro Kumabe, Naoaki Sato, Yasuyuki Toba, Takashi Tominaga, Haruo Yamashita, Toyoaki Shinohara, Kazuyoshi Watanabe, Hidenori Endo, Kenjirou Hujiwara, Toshinori Hasegawa, Hisashi Nitta, Kuroyanagi Takayuki, Nobuhiko Mizutani, Akira Tsunoda, Fumio Suzuki, Tetsuya Morimoto, Takuya Kawai, Mitsuyuki Fujitsuka, Hiromasa Tsuiki, Junichi Kuratsu, Hidemichi Sasayama, Shigehiro Ohmori, Seiko Hasegawa, Kazuhiro Kikuchi, Motohiro Morioka, Masayuki Yokota, Nozomu Murai, Yasumasa Yamamoto, Nobuhito Mori, Minoru Kidooka, Hiroshi Tenjin, Yoshihiro Iwamoto, Hitonori Takaba, Sei Haga, Yoshinori Arai, Toshiyuki Tsukada, Hirohide Karasudani, Masakazu Suga, Kawamoto Yukihiko, Naoto Izumi, Youtarou Takeuchi, Motohiro Arai, Shinji Okumura, Hisashi Tanaka, Yasushi Shibata, Tetsuya Masaoka, Masahiko Kasai, Hitoshi Miyake, Osamu Hamasaki, Misao Nishikawa, Naohiko Kubo, Yosimasa Kinosita, Hiroyuki Kaidu, Tarou Komuro, Hiroaki Shigeta, Yoshikazu Kusano, Shigekazu Takeuchi, Takayuki Matsuo, Yoshiharu Tokunaga, Norimoto Nakahara, Nobukazu Hashimoto, Mitsuhito Mase, Junpei Yoshimoto, Jin Momoji, Kenji Kamiyama, Koji Oka, Hiromichi Koga, Kazuya Morimoto, Tsutomu Kadekaru, Naoki Tokumitsu, Yasuyuki Nagai, Hirokazu Tanno, Takato Kagawa, Masaaki Saiki, Kotaro Ogihara, Junichi Imamura, Katsuhiro Yamashita, Akira Nakamizo, Yoshinari Nakamura, Ei-Ichirou Urasaki, Noriyuki Suzaki, Chiaki Takahashi, Youichirou Namba, Kazuo Hashikawa, Tomonori Yamada, Kazuyuki Kuwayama, Keiichi Sakai, Katsuhiro Kuroda, Hideyuki Kurihara, Masayuki Miyazono, Kosuke Miyahara, Hideaki Takahashi, Akihiko Saito, Igarashi Michitoku, Mitsuo Kouno, Shiro Kobayashi, Shunichi Yoneda, Hiroshi Kusunoki, Hiroji Miyake, Toshio Yokoe, Tatsuya Nakamura, Takayuki Kubodera, Mitsuhiko Hokari, Yasunari Otawara, Cheho Park, Hidemitu Nakagawa, Souichi Obara, Haruki Takahashi, Masafumi Ohtaki, Atsuya Okubo, Katsuhiko Hayashi, Masahisa Kawakami, Yu Takeda, Akihiko Kaga, Ryoichi Hayashi, Koji Tokunaga, Hiroyuki Nakashima, Yasuyuki Miyoshi, Atusi Kimoto, Toshimitsu Uchihara, Tomoaki Nagamine, Masahiro Noha, Hiromichi Sadashima, Toshihiko Kinjo, Osamu Tao, Masayuki Nakajima, Akira Isoshima, Kouichi Kuramoto, Shigeru Daido, Yoshiyasu Iwai, Toshihiko Kuroiwa, Akatsuki Wakayama, Kohsuke Yamashita, Yasunobu Gotou, Kouich Iwatsuki, Yoshida Masahiro, Nobuaki Kobayasi, Yoshimasa Niiya, Syouji Mabuchi, Motohiro Takayama, Kazuo Yamamoto, Junta Moroi, Masato Sugitani, Akio Ookura, Naoko Fujimura, Osamu Nishizaki, Sumio Isimaru, Hiroshi Wanihuchi, Nobukuni Murakami, Hiroto Murata, Naoki Kitagawa, Katsuhiko Kono, Michiya Kubo, Masashi Nakatsukasa, Makoto Inaba, Hidetoshi Ooigawa, Atsuhiro Kojima, Takamitsu Fujimaki, Osamu Fukuda, Yoshikazu Nakajima, Kazuyuki Kouno, Takaaki Yoshida, Reizou Kanemaru, Yohei Kudoh, Toshitaka Nakamura, Masayoshi Takigami, Shogo Nishi, Rokuya Tanikawa, Seisaburo Sakamoto, Makio Kaminogo, Seiichiro Hoshi, Yoshinari Okumura, Shinichi Okabe, Haruhiko Sato, Shiro Miyata, Kotaro Tsumura, Hiroshi Karibe, Noriaki Watabe, Ryuji Nakamura, Norifumi Shimoeda, Tsutomu Hitotsumatsu, Tomoaki Kameda, Hiroshi Ishiguchi, Atsuo Shinoda, Masanobu Hokama, Akinori Yamamura, Takeshi Kondoh, Kenichi Murao, Takafumi Wataya, Seiji Fukazawa, Shinsuke Muraoka, Hirosuke Fujisawa, Tsuneo Shishido, Mayumi Mori, Arai Hiroaki, Shinjitsu Nishimura, Zenichiro Watanabe, Susumu Nakashima, Kazuhito Nakamura, Yukinari Kakizawa, Hiroki Takano, Norihito Shirakawa, Masahiro Kagawa, Eiichiro Mabuchi, Kazusige Maeno, Takayuki Koizumi, Warou Taki, Yusuke Nakagaki, Kazuyuki Tane, Hiromichi Ooishi, Katsuyuki Asaoka, Yoshinori Akiyama, Tadao Kawamura, Atumi Takenobu, Takehisa Tuji, Masami Shimoda, Mitsunori Matsumae, Shinji Noda, Koiti Moroki, Hirofumi Oka, Masahito Agawa, Hajimu Miyake, Masateru Katayama, Shinichi Numazawa, Taketoshi Maehara, Hiroyuki Jimbo, Satoshi Ihara, Koji Matuoka, Oikawa Akihiro, Takahiro Oota, Makoto Noguchi, Takakazu Kawamata, Youichi Hashimoto, Keiichirou Onitsuka, Masahiko Kitano, Jae-Hyun Son, Toru Masuoka, Naoki Koketsu, Keiichi Akatsuka, Masamichi Kurosaki, Miyamori Tadao, Hiroaki Hondo, Kazumasa Yamatani, Hirofumi Oyama, Junji Koyama, Ogura Koichiro, Shinji Yamamoto, Hitoshi Tabata, Kazuya Uemura, Kazuhiko Sato, Hideyuki Yoshida, Takafumi Nishizaki, Hiroshi Egami, Hideo Takeshima, Shogo Ishiuchi, Akira Matsumura, Hiroyuki Kinouchi, Susumu Mekaru, Mikihiko Takeshita, Hitoshi Ozawa, Kiichiro Zenke, Takeshi Matsuyama, Toshikazu Kuwata, Teruyuki Habu, Tomoyoshi Okumura, Seiya Takehara, Rei Kondo, Takashi Kumagai, Keiten So, Sunao Takemura, Sonoda Yukihiko, Manabu Urakawa, Yasuhiro Hamada, Michiyasu Suzuki, Mikito Uchida, Hidehito Koizumi, Masaru Yamada, Takashi Tsuruno, Gen Ishida, Ryouichi Masuda, Makoto Kimura, Shinichirou Ishihara, Masashi Morikawa, Hidetoshi Murata, Katsumi Sakata, Motohiro Nomura, Akihiro Nemoto, Sumio Endou, Nobuo Hirota, Kennji Itou, Hiroaki Minami, and Yoshihumi Teramoto
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Medicine - Abstract
Objectives To examine the national, 6-year trends in in-hospital clinical outcomes of patients with subarachnoid haemorrhage (SAH) who underwent clipping or coiling and the prognostic influence of temporal trends in the Comprehensive Stroke Center (CSC) capabilities on patient outcomes in Japan.Design Retrospective study.Setting Six hundred and thirty-one primary care institutions in Japan.Participants Forty-five thousand and eleven patients with SAH who were urgently hospitalised, identified using the J-ASPECT Diagnosis Procedure Combination database.Primary and secondary outcome measures Annual number of patients with SAH who remained untreated, or who received clipping or coiling, in-hospital mortality and poor functional outcomes (modified Rankin Scale: 3–6) at discharge. Each CSC was assessed using a validated scoring system (CSC score: 1–25 points).Results In the overall cohort, in-hospital mortality decreased (year for trend, OR (95% CI): 0.97 (0.96 to 0.99)), while the proportion of poor functional outcomes remained unchanged (1.00 (0.98 to 1.02)). The proportion of patients who underwent clipping gradually decreased from 46.6% to 38.5%, while that of those who received coiling and those left untreated gradually increased from 16.9% to 22.6% and 35.4% to 38%, respectively. In-hospital mortality of coiled (0.94 (0.89 to 0.98)) and untreated (0.93 (0.90 to 0.96)) patients decreased, whereas that of clipped patients remained stable. CSC score improvement was associated with increased use of coiling (per 1-point increase, 1.14 (1.08 to 1.20)) but not with short-term patient outcomes regardless of treatment modality.Conclusions The 6-year trends indicated lower in-hospital mortality for patients with SAH (attributable to better outcomes), increased use of coiling and multidisciplinary care for untreated patients. Further increasing CSC capabilities may improve overall outcomes, mainly by increasing the use of coiling. Additional studies are necessary to determine the effect of confounders such as aneurysm complexity on outcomes of clipped patients in the modern endovascular era.
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- 2023
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4. In vitro comparative analysis of scanning accuracy of intraoral and laboratory scanners in measuring the distance between multiple implants
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Reiji Natsubori, Shota Fukazawa, Toyokazu Chiba, Norimasa Tanabe, Hidemichi Kihara, and Hisatomo Kondo
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Intraoral scanners ,Laboratory scanners ,Implants ,Accuracy ,Distance measurement ,Medicine ,Dentistry ,RK1-715 - Abstract
Abstract Background The purpose of this study was to evaluate the accuracy of intraoral scanners by comparing the trueness and precision of several types of scanners in measuring the distance between the ball abutments on pairs of multiple implants. Methods Seven implants were placed on a fully edentulous upper jaw model. After ball abutments were attached to the implants on the master model, the three-dimensional (3D) shape of the model was evaluated using a computer numerical control 3D coordinate-measuring machine. Subsequently, the 3D shape-related data of the model were obtained using two types of intraoral scanners (3M True Definition Scanner [TDS] and 3Shape Trios3 [TR3]) and two types of laboratory scanners (KaVo ARCTICA Auto Scan [KA] and Identica Hybrid [IH]). Using the obtained 3D shape-related data, the trueness and precision in measuring the distance between the balls within seven pairs of ball abutments were compared among the scanners using 3D analysis software. Results Intraoral scanners produced significantly greater errors in trueness and precision than laboratory scanners in measuring the distances between the ball abutments in all the dental regions. Between the intraoral scanners, powder-requiring TDS produced significantly lower errors at inflection points than powder-free TR3. Conclusions These results indicate that an optical impression technique using an intraoral scanner is suitable for dental implant treatment in patients with a few missing teeth.
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- 2022
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5. Xenopus laevis il11ra.L is an experimentally proven interleukin-11 receptor component that is required for tadpole tail regeneration
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Shunya Suzuki, Kayo Sasaki, Taro Fukazawa, and Takeo Kubo
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Medicine ,Science - Abstract
Abstract Xenopus laevis tadpoles possess high regenerative ability and can regenerate functional tails after amputation. An early event in regeneration is the induction of undifferentiated cells that form the regenerated tail. We previously reported that interleukin-11 (il11) is upregulated immediately after tail amputation to induce undifferentiated cells of different cell lineages, indicating a key role of il11 in initiating tail regeneration. As Il11 is a secretory factor, Il11 receptor-expressing cells are thought to mediate its function. X. laevis has a gene annotated as interleukin 11 receptor subunit alpha on chromosome 1L (il11ra.L), a putative subunit of the Il11 receptor complex, but its function has not been investigated. Here, we show that nuclear localization of phosphorylated Stat3 induced by Il11 is abolished in il11ra.L knocked-out culture cells, strongly suggesting that il11ra.L encodes an Il11 receptor component. Moreover, knockdown of il11ra.L impaired tadpole tail regeneration, suggesting its indispensable role in tail regeneration. We also provide a model showing that Il11 functions via il11ra.L-expressing cells in a non-cell autonomous manner. These results highlight the importance of il11ra.L-expressing cells in tail regeneration.
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- 2022
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6. Single-cell DNA and RNA sequencing of circulating tumor cells
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Masato Kojima, Takanori Harada, Takahiro Fukazawa, Sho Kurihara, Isamu Saeki, Shinya Takahashi, and Eiso Hiyama
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Medicine ,Science - Abstract
Abstract Single-cell sequencing of circulating tumor cells can precisely represent tumor heterogeneity and provide useful information for cancer treatment and research. After spiking TGW neuroblastoma cells into blood derived from healthy volunteer, the cells were isolated by fluorescence-activated cell sorting. DNA and mRNA were amplified by four different whole-genome amplifications (WGA) and three whole-transcriptome amplifications (WTA) methods, followed by single-cell DNA and RNA sequencing. Multiple displacement amplification (MDA)-based WGA methods showed higher amplification efficiency than other methods with a comparable depth of coverage as the bulk sample. The uniformity of coverage greatly differed among samples (12.5–89.2%), with some samples evaluated by the MDA-based WGA method using phi29 DNA polymerase and random primers showing a high (> 80%) uniformity of coverage. The MDA-based WTA method less effectively amplified mRNA and showed non-specific gene expression patterns. The PCR-based WTA using template switching with locked nucleic acid technology accurately amplified mRNA from a single cell. Taken together, our results present a more reliable and adaptable approach for CTC profiling at the single-cell level. Such molecular information on CTCs derived from clinical patients will promote cancer treatment and research.
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- 2021
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7. Inhibiting SARS-CoV-2 infection in vitro by suppressing its receptor, angiotensin-converting enzyme 2, via aryl-hydrocarbon receptor signal
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Keiji Tanimoto, Kiichi Hirota, Takahiro Fukazawa, Yoshiyuki Matsuo, Toshihito Nomura, Nazmul Tanuza, Nobuyuki Hirohashi, Hidemasa Bono, and Takemasa Sakaguchi
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Medicine ,Science - Abstract
Abstract Since understanding molecular mechanisms of SARS-CoV-2 infection is extremely important for developing effective therapies against COVID-19, we focused on the internalization mechanism of SARS-CoV-2 via ACE2. Although cigarette smoke is generally believed to be harmful to the pathogenesis of COVID-19, cigarette smoke extract (CSE) treatments were surprisingly found to suppress the expression of ACE2 in HepG2 cells. We thus tried to clarify the mechanism of CSE effects on expression of ACE2 in mammalian cells. Because RNA-seq analysis suggested that suppressive effects on ACE2 might be inversely correlated with induction of the genes regulated by aryl hydrocarbon receptor (AHR), the AHR agonists 6-formylindolo(3,2-b)carbazole (FICZ) and omeprazole (OMP) were tested to assess whether those treatments affected ACE2 expression. Both FICZ and OMP clearly suppressed ACE2 expression in a dose-dependent manner along with inducing CYP1A1. Knock-down experiments indicated a reduction of ACE2 by FICZ treatment in an AHR-dependent manner. Finally, treatments of AHR agonists inhibited SARS-CoV-2 infection into Vero E6 cells as determined with immunoblotting analyses detecting SARS-CoV-2 specific nucleocapsid protein. We here demonstrate that treatment with AHR agonists, including FICZ, and OMP, decreases expression of ACE2 via AHR activation, resulting in suppression of SARS-CoV-2 infection in mammalian cells.
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- 2021
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8. CAPS1 is involved in hippocampal synaptic plasticity and hippocampus-associated learning
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Chiaki Ishii, Natsumi Shibano, Mio Yamazaki, Tomoki Arima, Yuna Kato, Yuki Ishii, Yo Shinoda, Yugo Fukazawa, Tetsushi Sadakata, Yoshitake Sano, and Teiichi Furuichi
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Medicine ,Science - Abstract
Abstract Calcium-dependent activator protein for secretion 1 (CAPS1) is a key molecule in vesicular exocytosis, probably in the priming step. However, CAPS1’s role in synaptic plasticity and brain function is elusive. Herein, we showed that synaptic plasticity and learning behavior were impaired in forebrain and/or hippocampus-specific Caps1 conditional knockout (cKO) mice by means of molecular, physiological, and behavioral analyses. Neonatal Caps1 cKO mice showed a decrease in the number of docked vesicles in the hippocampal CA3 region, with no detectable changes in the distribution of other major exocytosis-related molecules. Additionally, long-term potentiation (LTP) was partially and severely impaired in the CA1 and CA3 regions, respectively. CA1 LTP was reinforced by repeated high-frequency stimuli, whereas CA3 LTP was completely abolished. Accordingly, hippocampus-associated learning was severely impaired in adeno-associated virus (AAV) infection-mediated postnatal Caps1 cKO mice. Collectively, our findings suggest that CAPS1 is a key protein involved in the cellular mechanisms underlying hippocampal synaptic release and plasticity, which is crucial for hippocampus-associated learning.
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- 2021
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9. Rapamycin limits CD4+ T cell proliferation in simian immunodeficiency virus–infected rhesus macaques on antiretroviral therapy
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Benjamin D. Varco-Merth, William Brantley, Alejandra Marenco, Derick D. Duell, Devin N. Fachko, Brian Richardson, Kathleen Busman-Sahay, Danica Shao, Walter Flores, Kathleen Engelman, Yoshinori Fukazawa, Scott W. Wong, Rebecca L. Skalsky, Jeremy Smedley, Michael K. Axthelm, Jeffrey D. Lifson, Jacob D. Estes, Paul T. Edlefsen, Louis J. Picker, Cheryl M.A. Cameron, Timothy J. Henrich, and Afam A. Okoye
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AIDS/HIV ,Medicine - Abstract
Proliferation of latently infected CD4+ T cells with replication-competent proviruses is an important mechanism contributing to HIV persistence during antiretroviral therapy (ART). One approach to targeting this latent cell expansion is to inhibit mTOR, a regulatory kinase involved with cell growth, metabolism, and proliferation. Here, we determined the effects of chronic mTOR inhibition with rapamycin with or without T cell activation in SIV-infected rhesus macaques (RMs) on ART. Rapamycin perturbed the expression of multiple genes and signaling pathways important for cellular proliferation and substantially decreased the frequency of proliferating CD4+ memory T cells (TM cells) in blood and tissues. However, levels of cell-associated SIV DNA and SIV RNA were not markedly different between rapamycin-treated RMs and controls during ART. T cell activation with an anti-CD3LALA antibody induced increases in SIV RNA in plasma of RMs on rapamycin, consistent with SIV production. However, upon ART cessation, both rapamycin and CD3LALA–treated and control-treated RMs rebounded in less than 12 days, with no difference in the time to viral rebound or post-ART viral load set points. These results indicate that, while rapamycin can decrease the proliferation of CD4+ TM cells, chronic mTOR inhibition alone or in combination with T cell activation was not sufficient to disrupt the stability of the SIV reservoir.
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- 2022
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10. Short-term efficacy and safety of second generation bipolar transurethral vaporization of the prostate (B-TUVP) for large benign prostate enlargement: Results from a retrospective feasibility study.
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Takeshi Fukazawa, Hiroki Ito, Masato Takanashi, Risa Shinoki, Tadashi Tabei, Takashi Kawahara, Francis X Keeley, Marcus J Drake, and Kazuki Kobayashi
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Medicine ,Science - Abstract
BackgroundTo investigate the efficacy and safety of a second-generation bipolar transurethral electro vaporization of the prostate (B-TUVP) with the new oval-shaped electrode for large benign prostatic enlargement (BPE) with prostate volume (PV) ≥100ml.Materials and methods100 patients who underwent second-generation B-TUVP with the oval-shaped electrode for male lower urinary tract symptom (LUTS) or urinary retention between July 2018 and July 2020 were enrolled in this study. The patients' characteristics and treatment outcome were retrospectively compared between patients with PV Results17/41 (41.5%) cases of PV ≥100ml and 24/59 cases (40.7%) of PV ConclusionsThis is the first study investigating short-term efficacy and safety of second-generation B-TUVP with the oval-shaped electrode on large BPE. B-TUVP appears to be effective and safe for treating moderate-to-severe lower urinary tract symptoms and urinary retention in patients with large BPE.
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- 2021
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11. Microglial SIRPα regulates the emergence of CD11c+ microglia and demyelination damage in white matter
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Miho Sato-Hashimoto, Tomomi Nozu, Riho Toriba, Ayano Horikoshi, Miho Akaike, Kyoko Kawamoto, Ayaka Hirose, Yuriko Hayashi, Hiromi Nagai, Wakana Shimizu, Ayaka Saiki, Tatsuya Ishikawa, Ruwaida Elhanbly, Takenori Kotani, Yoji Murata, Yasuyuki Saito, Masae Naruse, Koji Shibasaki, Per-Arne Oldenborg, Steffen Jung, Takashi Matozaki, Yugo Fukazawa, and Hiroshi Ohnishi
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microglia ,white matter ,tissue repair ,demyelination ,CD11c ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
A characteristic subset of microglia expressing CD11c appears in response to brain damage. However, the functional role of CD11c+ microglia, as well as the mechanism of its induction, are poorly understood. Here we report that the genetic ablation of signal regulatory protein α (SIRPα), a membrane protein, induced the emergence of CD11c+ microglia in the brain white matter. Mice lacking CD47, a physiological ligand of SIRPα, and microglia-specific SIRPα-knockout mice exhibited the same phenotype, suggesting that an interaction between microglial SIRPα and CD47 on neighbouring cells suppressed the emergence of CD11c+ microglia. A lack of SIRPα did not cause detectable damage to the white matter, but resulted in the increased expression of genes whose expression is characteristic of the repair phase after demyelination. In addition, cuprizone-induced demyelination was alleviated by the microglia-specific ablation of SIRPα. Thus, microglial SIRPα suppresses the induction of CD11c+ microglia that have the potential to accelerate the repair of damaged white matter.
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- 2019
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12. Simulated microgravity enhances CDDP-induced apoptosis signal via p53-independent mechanisms in cancer cells.
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Takahiro Fukazawa, Keiji Tanimoto, Looniva Shrestha, Takeshi Imura, Shinya Takahashi, Taijiro Sueda, Nobuyuki Hirohashi, Eiso Hiyama, and Louis Yuge
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Medicine ,Science - Abstract
Although the biological systems in the human body are affected by the earth's gravity, information about the underlying molecular mechanisms is limited. For example, apoptotic signaling is enhanced in cancer cells subjected to microgravity. We reasoned that signaling regulated by p53 may be involved because of its role in apoptosis. Therefore, we aimed to clarify the molecular mechanisms of modified cis-diamminedichloroplatinum (CDDP)-sensitivity under simulated microgravity by focusing on p53-related cell death mechanisms. Immunoblotting analyses indicated that, under microgravity, CDDP-induced ATM/p53 signaling increased and caspase-3 was cleaved earlier. However, microgravity decreased the levels of expression of p53 targets BAX and CDKN1A. Interestingly, microgravity increased the PTEN, DRAM1, and PRKAA1 mRNA levels. However, microgravity decreased the levels of mTOR and increased the LC3-II/I ratio, suggesting the activation of autophagy. The CDDP-induced cleavage of caspase-3 was increased during the early phase in Group MG (+), and cleaved caspase-3 was detected even in Group MG (+) with constitutive expression of a mutant type of p53 (hereafter, "+" indicates CDDP treatment). These results interestingly indicate that microgravity altered CDDP sensitivity through activation of caspase-3 by p53-independent mechanism.
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- 2019
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13. A case of long-term follow-up of a Japanese patient with Fabry disease without recurrent cerebral infarction treated with enzyme replacement therapy
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Akihiro Fujii, Yusuke Nishimura, Ryosuke Fukazawa, Hitoshi Sakuraba, Hidesato Takezawa, and Yuta Kojima
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medicine.medical_specialty ,business.industry ,Long term follow up ,Cerebral infarction ,medicine ,Enzyme replacement therapy ,medicine.disease ,business ,Fabry disease ,Surgery - Published
- 2022
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14. Beneficial effects of fingolimod in MS patients with high serum Sema4A levels.
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Toru Koda, Akiko Namba, Yuji Nakatsuji, Masaaki Niino, Yusei Miyazaki, Tomoyuki Sugimoto, Makoto Kinoshita, Kazushiro Takata, Kazuya Yamashita, Mikito Shimizu, Toshiyuki Fukazawa, Atsushi Kumanogoh, Hideki Mochizuki, and Tatsusada Okuno
- Subjects
Medicine ,Science - Abstract
We previously demonstrated that patients with multiple sclerosis (MS) of high serum Sema4A levels are resistant to IFN-β therapy. To further elucidate the role of serum Sema4A as a biomarker for therapeutic stratification in MS patients, it is important to clarify the efficacy of other disease-modifying drugs (DMD) in those with high serum Sema4A levels. Thus, in this study we investigated whether fingolimod has beneficial effects on MS patients with high Sema4A levels. We retrospectively analyzed annualized relapse rate (ARR) and Expanded Disability Status Scale (EDSS) change in 56 relapsing-remitting multiple sclerosis (RRMS) patients who had been treated with fingolimod, including those who switched from IFN-β therapy. The levels of Sema4A in the sera were measured by sandwich ELISA. The implications of Sema4A on the efficacy of fingolimod were investigated by administering recombinant Sema4A-Fc and fingolimod to mice with experimental autoimmune encephalomyelitis (EAE). Retrospective analysis of MS cohort (17 high Sema4A and 39 low Sema4A) demonstrated the effectiveness of fingolimod in those with high serum Sema4A levels, showing reduction of ARR (from 1.21 to 0.12) and EDSS progression (from 0.50 to 0.04). Consistent with this observation, improvement in the disease severity of EAE mice receiving recombinant Sema4A-Fc was also observed after fingolimod treatment. These data suggest that fingolimod could serve as a candidate DMD for managing the disease activity of MS patients with high Sema4A levels.
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- 2018
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15. Effect of linguistic factors on the occurrence of stuttering-like disfluency among Japanese-speaking preschool children who stutter
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Saburo Takahashi, Takuya Oe, Natsuki Fukazawa, Natsumi Morita, Shoko Miyamoto, and Daichi Iimura
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Speech and Hearing ,Linguistics and Language ,Stuttering ,medicine ,Mean age ,Syllable ,Content word ,medicine.symptom ,Psychology ,Language and Linguistics ,Sentence ,Linguistics ,nervous system diseases - Abstract
This study aimed to investigate the linguistic factors involved in stuttering among Japanese-speaking preschool children. The participants included 10 Japanese children who stutter, with a mean age of 5 years and 9 months. Speech samples comprised spontaneous conversations of the participants with their parents for about 20 minutes. We compared the percentages of the occurrence of stuttering-like disfluencies (SLDs) at the word and sentence levels, using the Wilcoxon signed-rank test. The results showed no significant differences in SLDs based on syllable structure when comparing light and heavy syllables and comparing consonants and vowels in the initial position of each content word. SLDs occurred more frequently in the initial than non-initial position of words and in longer rather than shorter words. Additionally, SLDs occurred more frequently in sentences that contained more 'bunsetsu' (a kind of linguistic unit in Japanese). Our study is the first to show that both word and sentence-level factors could contribute to SLDs in preschool children who stutter in agglutinating languages, such as Japanese. This aspect is rarely reported in psycholinguistic studies based on stuttering occurrence in inflecting languages, such as English.
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- 2021
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16. Previous antibiotic use and the development of Kawasaki disease: a matched pair case‐control study
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Shouichi Ohga, Kiyoshi Ichihara, Hisanori Nishio, Mitsuru Fukazawa, Mitsuharu Fukazawa, and Etsuro Nanishi
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Male ,Vasculitis ,medicine.medical_specialty ,medicine.drug_class ,Antibiotics ,Mucocutaneous Lymph Node Syndrome ,030204 cardiovascular system & hematology ,Logistic regression ,Antimicrobial Stewardship ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,030225 pediatrics ,Internal medicine ,Odds Ratio ,medicine ,Humans ,Child ,Cesarean Section ,business.industry ,Case-control study ,Infant ,Odds ratio ,medicine.disease ,Confidence interval ,Anti-Bacterial Agents ,Gastrointestinal Microbiome ,Breast Feeding ,Logistic Models ,Case-Control Studies ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Etiology ,Dysbiosis ,Female ,Kawasaki disease ,business - Abstract
BACKGROUND Kawasaki disease (KD) is an acute febrile illness with systemic vasculitides, mostly affecting infants and young children. The etiology of KD is still unclear; however, altered gut microbiota have been recently implicated as a contributing factor for the development of vasculitis. METHODS We conducted an age- and gender-matched case-control study on 50 patients and 200 control subjects to search for potential factors leading to intestinal dysbiosis associated with KD. Data were analyzed using conditional multivariable logistic regression. RESULTS Previous antibiotic administration was associated with the patients who developed KD (odds ratio [OR] 11.7, 95% confidence interval [CI] 4.7-29.1, P < 0.0001), but not other variables, including breastfeeding and group nursery. In subgroup analyses, cesarean birth was indicated as an associated factor in addition to previous antibiotic administration in infants under 12 months of age (OR: 8.0, 95% CI: 1.8-34.4, P = 0.005), but not in older children. CONCLUSIONS The association between previous antibiotic administration and the onset of KD was demonstrated. Antibiotics may contribute to the development of KD by affecting the intestinal microbiota in infants and young children.
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- 2020
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17. Maxacalcitol Pharmacokinetic–Pharmacodynamic Modeling and Simulation for Secondary Hyperparathyroidism in Patients Receiving Maintenance Hemodialysis
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Hsi-Hsien Chen, Masaichi Abe, I-Ting Wang, Mizuki Fukazawa-Shinotsuka, Ming-Che Liu, Tomohisa Saito, Kimio Terao, and Satofumi Iida
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Vitamin ,medicine.medical_specialty ,medicine.medical_treatment ,Population ,Urology ,Parathyroid hormone ,law.invention ,chemistry.chemical_compound ,Calcitriol ,Pharmacokinetics ,Renal Dialysis ,law ,Drug Discovery ,Humans ,Medicine ,education ,education.field_of_study ,Clinical pharmacology ,business.industry ,General Medicine ,medicine.disease ,chemistry ,Parathyroid Hormone ,Pharmacodynamics ,Calcium ,Hyperparathyroidism, Secondary ,Secondary hyperparathyroidism ,Hemodialysis ,business - Abstract
Background Maxacalcitol was approved in Taiwan in 2018 as the first active vitamin D3 injection for secondary hyperparathyroidism (SHPT) in patients on maintenance hemodialysis. However, no data from any clinical study with maxacalcitol in Taiwanese patients is available. Objectives This analysis aimed to evaluate the profiles of parathyroid hormone (PTH) and calcium (Ca) concentrations in Taiwanese SHPT patients on hemodialysis and maxacalcitol. Methods We developed population pharmacokinetic (PK) and pharmacodynamic (PD) models using a modeling and simulation approach. The data for these analyses were obtained from two studies: a clinical pharmacology study in Japanese patients and an ethnic comparison study in healthy Japanese and -Taiwanese volunteers. We then conducted a simulation study with a PK-PD model comprising the PK and PD models developed here. Results Serum maxacalcitol concentration profile was modeled using a two-compartment model that took into consideration the distribution of concentrations below the lower limit of quantification. An ethnic difference in clearance was included in the PK model as a covariate. A PD model that used a PTH/Ca feedback loop best described the observed data. There were no significant differences in Ca or PTH concentrations between Taiwanese and Japanese based on the simulation results from our PK-PD model, even though maxacalcitol exposure was approximately 40% higher in Taiwanese than in Japanese. Conclusions On the basis of these population PK and PD analyses and the clinical study conducted in Japan, there is no clinically relevant difference between Taiwanese and Japanese in terms of serum Ca or PTH levels.
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- 2021
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18. Distribution of mRNA for GPR143, a receptor of 3,4-L-dihydroxyphenylalanine, and of immunoreactivities for nicotinic acetylcholine receptors in the nigrostriatal and mesolimbic regions
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Kengo Funakoshi, Fumio Nakamura, Yoshio Goshima, Kohtaro Takizawa, Yoshie Nakamura, Yugo Fukazawa, Tatsuo Hashimoto, Daiki Masukawa, Yuka Kasahara, Koshi Murata, and Motokazu Koga
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0301 basic medicine ,Nicotine ,Substantia nigra ,Striatum ,Receptors, Nicotinic ,Nucleus accumbens ,03 medical and health sciences ,0302 clinical medicine ,medicine ,RNA, Messenger ,Acetylcholine receptor ,Tyrosine hydroxylase ,Chemistry ,General Neuroscience ,Ventral Tegmental Area ,General Medicine ,Dihydroxyphenylalanine ,Cell biology ,Substantia Nigra ,Ventral tegmental area ,030104 developmental biology ,medicine.anatomical_structure ,Nicotinic agonist ,nervous system ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Nicotine exerts its reinforcing actions by activating nicotinic acetylcholine receptors (nAChRs), but the detailed mechanisms remain unclear. Nicotine releases 3, 4-dihydroxyphenylalanine (DOPA), a neurotransmitter candidate in the central nervous system. Here, we investigated the distribution of GPR143, a receptor of DOPA, and nAChR subunits in the nigrostriatal and mesolimbic regions. We found GPR143 mRNA-positive cells in the striatum and nucleus accumbens. Some of them were surrounded by tyrosine hydroxylase (TH)-immunoreactive fibers. There were some GPR143 mRNA-positive cells coexpressing TH, and nAChR subunit α4 or α7 in the substantia nigra and ventral tegmental area. These findings suggest that DOPA-GPR143 signaling may be involved in the nicotine action in the nigrostriatal and mesolimbic dopaminergic systems.
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- 2021
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19. Mismatch repair proteins immunohistochemical null phenotype in colon medullary carcinoma
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Hiroya Takeuchi, Takafumi Kawamura, Kazuya Shinmura, Yoshihiro Hiramatsu, Mayu Sakata, Hirotoshi Kikuchi, Kakeru Torii, Kiyotaka Kurachi, Yoshifumi Morita, Atsuko Fukazawa, Moriya Iwaizumi, Kyota Tatsuta, and Toshiya Akai
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Male ,congenital, hereditary, and neonatal diseases and abnormalities ,Colon ,business.industry ,Gastroenterology ,General Medicine ,Colon Medullary Carcinoma ,medicine.disease ,MLH1 ,DNA Mismatch Repair ,digestive system diseases ,Germline ,Lynch syndrome ,Phenotype ,Germline mutation ,Medullary carcinoma ,MSH2 ,Carcinoma, Medullary ,Cancer research ,medicine ,Humans ,MutL Protein Homolog 1 ,business ,Loss function ,Aged - Abstract
In mismatch repair (MMR) immunohistochemistry, four MMR proteins’ staining pattern reveals which particular gene may be defective. However, in the null phenotype, four MMR proteins are lost; consequently, it will be challenging to assume the target gene by immunohistochemistry and to determine whether deficient MMR was sporadic or germline. A 70-year-old man underwent right hemicolectomy with the diagnosis of ascending colon cancer. The postoperative histopathology revealed the diagnosis of medullary carcinoma and the loss of all four MMR expressions in immunohistochemistry. The mutation analysis using a peripheral blood sample showed no germline mutations in the four genes. This clinical case presents an unusual colon carcinoma that showed a MMR protein immunohistochemistry null phenotype. The cause of expression loss of MMR proteins can be explained by the loss of MLH1 and MSH2 functions associated with somatic loss of function mutations, functional loss in all four MMR proteins associated with somatic loss of function mutations, or Lynch-like syndrome. Correct interpretation and accumulation of relevant cases are necessary to unveil unusual cases in the era of universal screening.
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- 2021
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20. Adult Krabbe Disease That Was Successfully Treated with Intravenous Immunoglobulin
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Ryosuke Fukazawa, Akihiro Fujii, Nobuyuki Oka, Hiroki Takeuchi, Norio Sakai, and Toko Shibuya
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IVIg ,Adult ,Weakness ,medicine.medical_specialty ,Adolescent ,Case Report ,Chronic inflammatory demyelinating polyneuropathy ,CIDP ,030204 cardiovascular system & hematology ,Guillain-Barre Syndrome ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,hemic and lymphatic diseases ,Internal medicine ,Internal Medicine ,medicine ,Spastic ,Humans ,adult Krabbe disease ,Nerve biopsy ,medicine.diagnostic_test ,biology ,business.industry ,Immunoglobulins, Intravenous ,General Medicine ,medicine.disease ,demyelinating neuropathy ,Leukodystrophy, Globoid Cell ,Treatment Outcome ,Polyradiculoneuropathy, Chronic Inflammatory Demyelinating ,Nerve conduction study ,biology.protein ,Krabbe disease ,Female ,030211 gastroenterology & hepatology ,immunotherapy ,Antibody ,medicine.symptom ,Paraplegia ,business - Abstract
Krabbe disease involves the accumulation of neurotoxic metabolites due to lysosomal galactocerebrosidase enzyme deficiency, which results in widespread demyelination of central and peripheral nerves. Generally, Krabbe disease presents as spastic paraplegia with a slow progressive course; however, some cases may show clinical symptoms similar to those of chronic inflammatory demyelinating polyneuropathy (CIDP). No previously reported studies have investigated the efficacy of intravenous immunoglobulin (IVIg) for treating Krabbe disease, and reporting a case involving IVIg treatment may be informative in the clinical setting. A 14-year-old girl who developed Guillain-Barré syndrome-like limb weakness was administered IVIg, and her limb weakness improved. At 16 years old, she developed abnormal sensory perception and weakness of both upper limbs. A nerve conduction study revealed demyelination, which led us to suspect CIDP. IVIg was administered, and her symptoms gradually improved. A nerve biopsy, enzyme activity, and genetic test results indicated adult Krabbe disease. In some cases, IVIg may be an effective treatment for Krabbe disease.
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- 2021
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21. Mass spectrometric profiling of DNA adducts in the human stomach associated with damage from environmental factors
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Fumihiko Tanioka, Shioto Suzuki, Yuji Iwashita, Hiroki Mori, Haruhiko Sugimura, Keigo Matsumoto, Hideto Ochiai, Yoshitaka Matsushima, Ippei Ohnishi, Keisuke Inaba, Atsuko Fukazawa, Shohachi Suzuki, Yuto Matsushita, Takashi Yamashita, Nobuhito Kurono, and Shunsuke Ohtsuka
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0301 basic medicine ,Social Psychology ,lcsh:QH426-470 ,medicine.medical_treatment ,Mutagen ,Environmental Science (miscellaneous) ,medicine.disease_cause ,Liquid chromatography/tandem mass spectrometry ,Exposure ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,lcsh:QH540-549.5 ,DNA adduct ,Genetics ,medicine ,Lung cancer ,business.industry ,Stomach ,Research ,Cancer ,DNA adductomics ,medicine.disease ,lcsh:Genetics ,030104 developmental biology ,medicine.anatomical_structure ,chemistry ,030220 oncology & carcinogenesis ,Hepatocellular carcinoma ,Cancer research ,Gastrectomy ,lcsh:Ecology ,business ,Gastric cancer ,DNA ,DNA adductome - Abstract
Background A comprehensive understanding of DNA adducts, one of the most plausible origins of cancer mutations, is still elusive, especially in human tissues in clinical settings. Recent technological developments have facilitated the identification of multiple DNA adducts in a single experiment. Only a few attempts toward this “DNA adductome approach” in human tissues have been reported. Geospatial information on DNA adducts in human organs has been scarce. Aim Mass spectrometry of human gastric mucosal DNA was performed to identify DNA adducts associated with environmental factors. Materials and methods From 59 subjects who had received gastrectomy for gastric cancer, 306 samples of nontumor tissues and 15 samples of tumors (14 cases) were taken for DNA adductome analysis. Gastric nontumor tissue from autopsies of 7 subjects without gastric cancer (urothelial cancer, hepatocellular carcinoma, lung cancer each; the other four cases were without any cancers) was also investigated. Briefly, DNA was extracted from each sample with antioxidants, digested into nucleosides, separated by liquid chromatography, and then electrospray-ionized. Specific DNA adducts were identified by mass/charge number and column retention time compared to standards. Information on lifestyle factors such as tobacco smoking and alcohol drinking was taken from the clinical records of each subject. Results Seven DNA adducts, including modified bases, C5-methyl-2′-deoxycytidine, 2′-deoxyinosine, C5-hydroxymethyl-2′-deoxycytidine, N6-methyl-2′-deoxyadenosine, 1,N6-etheno-2′-deoxyadenosine, N6-hydroxymethyl-2′-deoxyadenosine, and C8-oxo-2′-deoxyguanosine, were identified in the human stomach and characterized. Intraindividual differences according to the multiple sites of these adducts were noted but were less substantial than interindividual differences. N6-hydroxymethyl-2′-deoxyadenosine was identified in the human stomach for the first time. The amount of C5-hydroxymethyl-2′-deoxycytidine was higher in the stomachs of subjects without gastric cancer than in the nontumor and tumor portions of the stomach in gastric cancer patients. Higher levels of 1,N6-etheno-2′-deoxyadenosine were detected in the subjects who reported both smoking and drinking than in those without these habits. These DNA adducts showed considerable correlations with each other. Conclusions We characterized 7 DNA adducts in the nontumor portion of the human stomach in both gastric cancer subjects and nongastric cancer subjects. A reduction in C5-hydroxymethyl-dC even in the nontumor mucosa of patients with gastric cancer was observed. Smoking and drinking habits significantly influenced the quantity of one of the lipid peroxidation-derived adducts, etheno-dA. A more expansive DNA adductome profile would provide a comprehensive understanding of the origin of human cancer in the future.
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- 2021
22. Factors Influencing Regulatory Decision-Making in Signal Management: Analysis Based on the Signals Identified from the FAERS
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Mamoru Narukawa, Yasushi Hinomura, Masayuki Kaneko, and Chisato Fukazawa
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Special populations ,Drug-Related Side Effects and Adverse Reactions ,United States Food and Drug Administration ,business.industry ,Public Health, Environmental and Occupational Health ,Univariate ,Logistic regression ,030226 pharmacology & pharmacy ,01 natural sciences ,United States ,Food and drug administration ,010104 statistics & probability ,03 medical and health sciences ,Adverse Event Reporting System ,0302 clinical medicine ,Environmental health ,Pharmacovigilance ,Adverse Drug Reaction Reporting Systems ,Humans ,Medicine ,Pharmacology (medical) ,0101 mathematics ,Adverse effect ,business ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) - Abstract
This study aimed to identify factors that influence the decision to take safety regulatory actions in routine signal management based on spontaneous reports. For this purpose, we analyzed the safety signals identified from the Food and Drug Administration (FDA) Adverse Event Reporting System (FAERS) and related information. From the signals that the FDA identified in the FAERS between 2008 1Q and 2014 4Q, we selected 216 signals for which regulatory action was or was not taken. Characteristics of the signals were extracted from the FAERS quarterly reports that give information about what signals were identified from the FAERS and what actions were taken for them, and the FAERS data released in the same quarter when the signal was published. Univariate and multivariable logistic regression analysis was used to assess the relationship between the characteristics of each of the signals and the decision on regulatory action. As a result of the univariate logistic regression analysis, we selected 5 factors (positive rechallenge, number of cases accumulated in the last one-year period before the signal indication, previous awareness, serious outcome, risk for special populations) to include in the multivariable logistic regression model (p
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- 2021
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23. Impact of low‐dose tadalafil on adverse events after low‐dose‐rate brachytherapy for prostate cancer: A bi‐center randomized open‐label trial
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Tetsuichi Saitou, Haruaki Kato, Osamu Ishizuka, Tomonori Minagawa, Tomohiko Oguchi, Teruyuki Ogawa, Ayumu Fukazawa, Iwao Hashida, Keiichiro Koiwai, and Kazuyoshi Iijima
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Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,Brachytherapy ,Prostatic Hyperplasia ,030232 urology & nephrology ,Tadalafil ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Lower Urinary Tract Symptoms ,Tamsulosin ,Lower urinary tract symptoms ,Clinical endpoint ,Humans ,Medicine ,Sulfonamides ,business.industry ,Prostatic Neoplasms ,medicine.disease ,Low-Dose Rate Brachytherapy ,Treatment Outcome ,030220 oncology & carcinogenesis ,Drug Therapy, Combination ,International Prostate Symptom Score ,business ,medicine.drug - Abstract
Objective To study the efficacy of phosphodiesterase-5 inhibitor tadalafil in attenuating adverse events after low-dose-rate brachytherapy for prostate cancer. Methods This was a randomized open-label trial, conducted at two institutions. Prostate cancer patients undergoing low-dose-rate brachytherapy were randomly assigned to receive tadalafil (study group) or tamsulosin (control group). The primary endpoint was International Prostate Symptom Score for subjective evaluation of lower urinary tract symptoms. Uroflowmetry, postvoid residual urine volume, and Sexual Health Inventory for Men score were the secondary endpoints. Each clinical variable was evaluated during a follow-up period of 1 year after low-dose-rate brachytherapy. Results A total of 107 patients were enrolled in this study, with a final total of 96 patients analyzed. The mean total International Prostate Symptom Score changes at 1, 3, 6, 9, and 12 months after low-dose-rate brachytherapy were +7.4, +7.1, +4.7, +1.5, and +0.8, respectively, in the tamsulosin group, and +8.5, +9.2, +6.4, +4.1, and +1.6, respectively, in the tadalafil group. There were no statistically significant differences in International Prostate Symptom Score with the exception of the score at 9-month follow-up. Moreover, there were no statistically significant differences in any of the uroflowmetry or postvoid residual urine volume findings. The Sexual Health Inventory for Men score in the tadalafil group was significantly higher than that in the tamsulosin group at 6, 9, and 12 months after low-dose-rate brachytherapy. Conclusions Tadalafil could be an effective option for the management of lower urinary tract symptoms after low-dose-rate brachytherapy.
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- 2021
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24. Effects of Dietary Fat Restriction on Endurance Training-induced Metabolic Adaptations in Rat Skeletal Muscle
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Shin Terada, Saki Kondo, Takuya Karasawa, Atsuko Koike, Momoko Tsutsui, and Ayumi Fukazawa
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Male ,medicine.medical_specialty ,030309 nutrition & dietetics ,General Chemical Engineering ,PDK4 ,Rats, Sprague-Dawley ,03 medical and health sciences ,chemistry.chemical_compound ,0404 agricultural biotechnology ,Endurance training ,Physical Conditioning, Animal ,Internal medicine ,medicine ,Animals ,Glycolysis ,Muscle, Skeletal ,Diet, Fat-Restricted ,Dietary fat ,chemistry.chemical_classification ,0303 health sciences ,Glycogen ,business.industry ,3-Hydroxyacyl CoA Dehydrogenases ,Skeletal muscle ,04 agricultural and veterinary sciences ,General Medicine ,General Chemistry ,Carbohydrate ,Adaptation, Physiological ,040401 food science ,Endurance Training ,Enzyme ,Endocrinology ,medicine.anatomical_structure ,Adipose Tissue ,chemistry ,business ,Oxidation-Reduction ,Protein Kinases - Abstract
Endurance exercise training enhances muscle fat oxidation while concomitantly reducing carbohydrate (glycogen) utilization during exercise, thereby delaying the onset of fatigue. This study examined the effects of dietary fat restriction on endurance training-induced metabolic adaptations in rat skeletal muscle. Male Sprague-Dawley rats were placed on either a control diet (CON: 19.2% protein, 21.6% fat, and 59.2% carbohydrate as a percentage of total energy) or a fat-restricted diet (FR: 21.5% protein, 2.4% fat, and 76.1% carbohydrate as a percentage of total energy) for 4 wks. Half the rats in each dietary group performed daily 6-h swimming exercise (two 3-h sessions separated by 45 min of rest) on 5 days each wk. Endurance training significantly increased the expression of β-hydroxyacyl CoA dehydrogenase (βHAD), a key enzyme of fat oxidation, and pyruvate dehydrogenase kinase 4 (PDK4), an inhibitory regulator of glycolytic flux, in the skeletal muscle of rats fed the CON diet. However, such endurance training-induced increases in muscle βHAD and PDK4 were partially suppressed by the FR diet, suggesting that a FR diet may diminish the endurance training-induced enhancement of fat oxidation and reduction in glycogen utilization during exercise. We then assessed the muscle glycogen utilization rate during an acute bout of swimming exercise in the trained rats fed either the CON or the FR diet and consequently found that rats fed the FR diet had a significantly higher muscle glycogen utilization rate during exercise compared with rats fed the CON diet. In conclusion, dietary fat restriction may attenuate the endurance training-induced metabolic adaptations in skeletal muscle.
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- 2021
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25. Report on the WFAS Executive Committee in 2020
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Hiroyuki Tsuru, Ikuro Wakayama, Yohji Fukazawa, Naoto Ishizaki, Munenori Saito, and Shoko Masuyama
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business.industry ,Medicine ,business ,Executive committee ,Management - Published
- 2021
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26. Gallbladder Torsion with Incarceration into the Foramen of Morgagni
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Takanori Sakaguchi, Atsuko Fukazawa, Yuya Iwase, Keigo Matsumoto, Osamu Jindou, and Shohachi Suzuki
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medicine.anatomical_structure ,business.industry ,Gallbladder ,Torsion (gastropod) ,Foramen ,Medicine ,Anatomy ,business - Published
- 2021
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27. Variations in ORAI1 Gene Associated with Kawasaki Disease.
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Yoshihiro Onouchi, Ryuji Fukazawa, Kenichiro Yamamura, Hiroyuki Suzuki, Nobuyuki Kakimoto, Tomohiro Suenaga, Takashi Takeuchi, Hiromichi Hamada, Takafumi Honda, Kumi Yasukawa, Masaru Terai, Ryota Ebata, Kouji Higashi, Tsutomu Saji, Yasushi Kemmotsu, Shinichi Takatsuki, Kazunobu Ouchi, Fumio Kishi, Tetsushi Yoshikawa, Toshiro Nagai, Kunihiro Hamamoto, Yoshitake Sato, Akihito Honda, Hironobu Kobayashi, Junichi Sato, Shoichi Shibuta, Masakazu Miyawaki, Ko Oishi, Hironobu Yamaga, Noriyuki Aoyagi, Megumi Yoshiyama, Ritsuko Miyashita, Yuji Murata, Akihiro Fujino, Kouichi Ozaki, Tomisaku Kawasaki, Jun Abe, Mitsuru Seki, Tohru Kobayashi, Hirokazu Arakawa, Shunichi Ogawa, Toshiro Hara, Akira Hata, and Toshihiro Tanaka
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Medicine ,Science - Abstract
Kawasaki disease (KD; MIM#61175) is a systemic vasculitis syndrome with unknown etiology which predominantly affects infants and children. Recent findings of susceptibility genes for KD suggest possible involvement of the Ca(2+)/NFAT pathway in the pathogenesis of KD. ORAI1 is a Ca(2+) release activated Ca(2+) (CRAC) channel mediating store-operated Ca(2+) entry (SOCE) on the plasma membrane. The gene for ORAI1 is located in chromosome 12q24 where a positive linkage signal was observed in our previous affected sib-pair study of KD. A common non-synonymous single nucleotide polymorphism located within exon 2 of ORAI1 (rs3741596) was significantly associated with KD (P = 0.028 in the discovery sample set (729 KD cases and 1,315 controls), P = 0.0056 in the replication sample set (1,813 KD cases vs. 1,097 controls) and P = 0.00041 in a meta-analysis by the Mantel-Haenszel method). Interestingly, frequency of the risk allele of rs3741596 is more than 20 times higher in Japanese compared to Europeans. We also found a rare 6 base-pair in-frame insertion variant associated with KD (rs141919534; 2,544 KD cases vs. 2,414 controls, P = 0.012). These data indicate that ORAI1 gene variations are associated with KD and may suggest the potential importance of the Ca(2+)/NFAT pathway in the pathogenesis of this disorder.
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- 2016
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28. Bioelectrical impedance analysis for perioperative water management in adult cardiovascular valve disease surgery
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Tomoki Yamatsuji, Ichiro Morita, Kensuke Kondo, Naomasa Ishida, Masahiko Kuinose, Atsuhisa Ishida, Tatsuya Watanabe, Kotone Tsujimoto, Noriyuki Tokunaga, Munenori Takaoka, Hideo Yoshida, Ryutaro Isoda, Takuro Yukawa, and Takuya Fukazawa
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Male ,Risk ,Bioelectrical impedance analysis ,medicine.medical_specialty ,Body water ,Heart Valve Diseases ,Intracellular Space ,030232 urology & nephrology ,Renal function ,Valve surgery ,030204 cardiovascular system & hematology ,Perioperative Care ,03 medical and health sciences ,0302 clinical medicine ,Body Water ,Predictive Value of Tests ,Electric Impedance ,medicine ,Edema ,Humans ,Perioperative Period ,Edema index ,Aged ,Retrospective Studies ,Aged, 80 and over ,Predictive marker ,business.industry ,General Medicine ,Perioperative ,Middle Aged ,medicine.disease ,Surgery ,Cardiac surgery ,Heart failure ,Perioperative water management ,Breathing ,Female ,Original Article ,Extracellular Space ,business ,Biomarkers ,Glomerular Filtration Rate - Abstract
Purpose Bioelectrical impedance analysis (BIA) has been used recently to measure the body water of patients with acute heart failure. We used BIA in this study to better understand, and possibly identify a predictive marker for, perioperative water behavior in cardiac surgery patients. Methods We measured body water and studied its behavior in 44 patients undergoing surgery for cardiac valvular disease at our hospital. Measurements included the levels of extracellular water (ECW), intracellular water (ICW), and total body water, the edema index (EI), and the ratio of ECW to total body water. The first measured EI was defined as the “preoperative EI” and the maximum as the “peak EI”. Results A negative correlation was found between the preoperative EI and the preoperative estimated glomerular filtration rate (eGFR) (R = 0.644, p R = 0.625, p R = 0.366, p R = 0.464, p = 0.026). Conclusion The EI is possibly a predictive marker for perioperative water management in cardiac surgery.
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- 2020
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29. Structural basis for GLP-1 receptor activation by LY3502970, an orally active nonpeptide agonist
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Hitoshi Yoshino, Takahiro Kawai, Dan Feng, Shunsuke Nagao, Francis S. Willard, Kyle W. Sloop, Tong Sun Kobilka, Aaron D. Showalter, Yoshiki Kawabe, David B. Wainscott, Brian A. Droz, Matthew P. Coghlan, Brian K. Kobilka, Masanori Fukazawa, Yoshiyuki Suzuki, and Bingfa Sun
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Male ,Models, Molecular ,0301 basic medicine ,Agonist ,Swine ,type 2 diabetes mellitus ,G protein ,medicine.drug_class ,cryoelectron microscopy ,Administration, Oral ,Aminopyridines ,Mice, Transgenic ,030209 endocrinology & metabolism ,Pharmacology ,Incretins ,Partial agonist ,Glucagon-Like Peptide-1 Receptor ,LY3502970 ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Protein Domains ,Species Specificity ,medicine ,Animals ,Humans ,Hypoglycemic Agents ,Receptor ,Glucagon-like peptide 1 receptor ,G protein-coupled receptor ,Multidisciplinary ,Chemistry ,Tryptophan ,Biological Sciences ,OWL833 ,Rats ,Macaca fascicularis ,HEK293 Cells ,030104 developmental biology ,Mechanism of action ,Benzamides ,Mutagenesis, Site-Directed ,Anti-Obesity Agents ,medicine.symptom ,Exenatide ,medicine.drug - Abstract
Significance Glucagon-like peptide-1 receptor agonists have become established as a leading class of diabetes medications. However, these peptide-based drugs are administered by subcutaneous injection or, in one case, by a complex oral dosing regimen. We now report the discovery of LY3502970, a potent and selective small-molecule GLP-1R agonist. LY3502970 exhibits preclinical pharmacology equivalent to a marketed injectable GLP-1R agonist and possesses pharmacokinetic properties compatible with oral dosing in humans. Cryoelectron microscopy (cryo-EM) studies reveal an ECD-driven receptor binding mode for LY3502970 that provides a favorable pharmacological profile., Glucagon-like peptide-1 receptor (GLP-1R) agonists are efficacious antidiabetic medications that work by enhancing glucose-dependent insulin secretion and improving energy balance. Currently approved GLP-1R agonists are peptide based, and it has proven difficult to obtain small-molecule activators possessing optimal pharmaceutical properties. We report the discovery and mechanism of action of LY3502970 (OWL833), a nonpeptide GLP-1R agonist. LY3502970 is a partial agonist, biased toward G protein activation over β-arrestin recruitment at the GLP-1R. The molecule is highly potent and selective against other class B G protein–coupled receptors (GPCRs) with a pharmacokinetic profile favorable for oral administration. A high-resolution structure of LY3502970 in complex with active-state GLP-1R revealed a unique binding pocket in the upper helical bundle where the compound is bound by the extracellular domain (ECD), extracellular loop 2, and transmembrane helices 1, 2, 3, and 7. This mechanism creates a distinct receptor conformation that may explain the partial agonism and biased signaling of the compound. Further, interaction between LY3502970 and the primate-specific Trp33 of the ECD informs species selective activity for the molecule. In efficacy studies, oral administration of LY3502970 resulted in glucose lowering in humanized GLP-1R transgenic mice and insulinotropic and hypophagic effects in nonhuman primates, demonstrating an effect size in both models comparable to injectable exenatide. Together, this work determined the molecular basis for the activity of an oral agent being developed for the treatment of type 2 diabetes mellitus, offering insights into the activation of class B GPCRs by nonpeptide ligands.
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- 2020
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30. Life-Long Neural Stem Cells Are Fate-Specified at an Early Developmental Stage
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Aoi Tanaka, Takahiro Fuchigami, Seiji Hitoshi, Shohei Ishida, Anri Kuroda, Yoshitaka Hayashi, Yugo Fukazawa, and Kazuhiro Ikenaka
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Cognitive Neuroscience ,Population ,Genetic Vectors ,Mice, Transgenic ,Biology ,Cellular and Molecular Neuroscience ,Neural Stem Cells ,lentivirus ,Precursor cell ,Neurosphere ,Cortex (anatomy) ,medicine ,Animals ,Cell Lineage ,education ,reproductive and urinary physiology ,education.field_of_study ,Early embryonic stage ,clonal analysis ,Brain ,Embryonic stem cell ,barcoding ,Neural stem cell ,Olfactory bulb ,Cell biology ,nervous system diseases ,medicine.anatomical_structure ,nervous system ,mouse neural stem cells ,biological phenomena, cell phenomena, and immunity ,neurospheres - Abstract
The origin and life-long fate of quiescent neural stem cells (NSCs) in the adult mammalian brain remain largely unknown. A few neural precursor cells in the embryonic brain elongate their cell cycle time and subsequently become quiescent postnatally, suggesting the possibility that life-long NSCs are selected at an early embryonic stage. Here, we utilized a GFP-expressing lentivirus to investigate the fate of progeny from individual lentivirus-infected NSCs by identifying the lentiviral integration site. Our data suggest that NSCs become specified to two or more lineages prior to embryonic day 13.5 in mice: one NSC lineage produces cells only for the cortex and another provides neurons to the olfactory bulb. The majority of neurosphere-forming NSCs in the adult brain are relatively dormant and generate very few cells, if any, in the olfactory bulb or cortex, and this NSC population could serve as a reservoir that is occasionally reactivated later in life.
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- 2020
31. Combination of TAS-102 and bevacizumab as third-line treatment for metastatic colorectal cancer: TAS-CC3 study
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Akihisa Matsuda, Keiji Koda, Atsuko Fukazawa, Chihiro Kosugi, Kazuhiro Sakamoto, Kazuhiko Yoshimatsu, Takeshi Yamada, Hirohiko Kamiyama, Toshiaki Otsuka, Hideyuki Ishida, Hidekazu Kuramochi, Hiroshi Yoshida, Keiichiro Ishibashi, Hiromichi Sonoda, Yoichiro Yoshida, Suguru Hasegawa, and Satoru Yamaguchi
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0301 basic medicine ,Oncology ,medicine.medical_specialty ,Pyrrolidines ,Bevacizumab ,Colorectal cancer ,Leucovorin ,Phases of clinical research ,Neutropenia ,Disease-Free Survival ,Trifluridine ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Clinical endpoint ,Humans ,Adverse effect ,business.industry ,Hematology ,General Medicine ,medicine.disease ,Oxaliplatin ,Irinotecan ,Drug Combinations ,030104 developmental biology ,030220 oncology & carcinogenesis ,Surgery ,Fluorouracil ,Colorectal Neoplasms ,business ,Thymine ,medicine.drug - Abstract
TAS-102 improved the overall survival of metastatic colorectal cancer (CRC) patients with a median progression-free survival (PFS) in the RECOURSE trial. Subsequently, the combination of TAS-102 and bevacizumab was shown to extend the median PFS (C-TASK FORCE study). However, the study included patients who received second- and third-line treatment. Our study exclusively examined patients receiving this combination as a third-line treatment to investigate the clinical impact beyond cytotoxic doublets. This investigator-initiated, open-label, single-arm, multi-centered phase II study was conducted in Japan. Eligible CRC patients were refractory or intolerant to fluoropyrimidine, irinotecan, and oxaliplatin in first- and second-line therapy. TAS-102 (35 mg/m2) was given orally twice daily on days 1–5 and 8–12 in a 4-week cycle, and bevacizumab (5 mg/kg) was administered by intravenous infusion every 2 weeks. The primary endpoint was PFS and the secondary endpoints were time-to-treatment failure, response rate, overall survival (OS), and safety. Between June 2016 and August 2017, 32 patients were enrolled. All patients previously received bevacizumab. The median PFS was 4.5 months; the median overall survival was 9.3 months. Partial response was observed in two patients. The most common adverse events above grade 3 were neutropenia followed by thrombocytopenia. There were no non-hematological adverse events above grade 3 and no treatment-related deaths occurred. This study met its primary endpoint of PFS, which is comparable to the results of the C-TASK FORCE study. The TAS-102 and bevacizumab combination has the potential to be a therapeutic option for third-line treatment of metastatic CRC.
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- 2020
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32. Function of SlTILs and SlCHL under heat and oxidative stresses in tomato
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Reiko Motohashi, Anung Wahyudi, and Chikako Fukazawa
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0106 biological sciences ,Antioxidant ,medicine.medical_treatment ,Plant Science ,Oxidative phosphorylation ,Lipocalin ,Biology ,medicine.disease_cause ,01 natural sciences ,03 medical and health sciences ,medicine ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,Reactive oxygen species ,fungi ,food and beverages ,Stress resistance ,Cell biology ,chemistry ,Stress conditions ,Agronomy and Crop Science ,Function (biology) ,Oxidative stress ,010606 plant biology & botany ,Biotechnology - Abstract
Lipocalins are very important proteins for stress resistance in plants. To better understand the function of tomato lipocalins, we observed responses to oxidative stress using over-expressed SlTIL1, SlTIL2, SlCHL, and silenced-plants. Significant differences in reactive oxygen species accumulation (oxidative damage) were observed in all tested plants under heat stress. Plants with over-expressed SlTIL1, SlTIL2, and SlCHL showed less oxidative damage compared with wild-type plants under heat stress. The expression of SlSODs was induced in over-expressed SlTIL1, SlTIL2, and SlCHL plants under normal and heat stress conditions. Furthermore, silenced PDS, SlTILs, and SlCHL plants showed slightly increasing oxidative damage under heat stress alongside with lower SlSODs under normal and stress conditions. These results suggest that SlTIL1, SlTIL2, and SlCHL were involved in antioxidant defense by eliminating ROS in tomato plants.
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- 2020
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33. JCS/JSCS 2020 Guideline on Diagnosis and Management of Cardiovascular Sequelae in Kawasaki Disease
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Soichiro Kitamura, Hiroyuki Matsuura, Kazuyuki Ikeda, Kei Takahashi, Hiromichi Hamada, Hiroyuki Nakajima, Etsuko Tsuda, Kisaburo Sakamoto, Yoshihiro Onouchi, Hiroshi Kamiyama, Mamoru Ayusawa, Kenji Suda, Tohru Kobayashi, Junjiro Kobayashi, Kazuhiko Nishigaki, Takeshi Kimura, Ryuji Fukazawa, Masaru Miura, Hiroyoshi Yokoi, Masami Ochi, Hiroyuki Suzuki, Kenji Hamaoka, Yoshihide Mitani, and Hideaki Senzaki
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medicine.medical_specialty ,Consensus ,Evidence-Based Medicine ,business.industry ,Cardiology ,MEDLINE ,General Medicine ,Guideline ,Mucocutaneous Lymph Node Syndrome ,Prognosis ,medicine.disease ,Cardiovascular Diseases ,Humans ,Medicine ,Kawasaki disease ,Cardiology and Cardiovascular Medicine ,business ,Intensive care medicine - Published
- 2020
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34. A CASE OF DISSEMINATED INTRAVASCULAR COAGULATION CAUSED BY ADVANCED PROSTATE CANCER
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Hiroki Ito, Masashi Imano, Takuma Nirei, Takeshi Fukazawa, Sogo Tsutsumi, Kazuki Kobayashi, Tadashi Tabei, and Risa Shinoki
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Disseminated intravascular coagulation ,medicine.medical_specialty ,Blood transfusion ,medicine.diagnostic_test ,business.industry ,Urology ,medicine.medical_treatment ,Magnetic resonance imaging ,medicine.disease ,Prostate cancer ,Purpura ,medicine.anatomical_structure ,Bone scintigraphy ,Prostate ,hemic and lymphatic diseases ,medicine ,Prednisolone ,Radiology ,medicine.symptom ,business ,medicine.drug - Abstract
The 79 years old man was referred to our department due to high value of serum prostate specific antigen (39.54 ng/ml). The magnetic resonance imaging demonstrated diffuse low signal at his prostate. Bone scintigraphy revealed multiple metastatic lesion. Needle biopsy was performed for definite diagnosis. Systemic purpura showed after prostate needle biopsy although he had noticed local purpura at his back before the examination. He was diagnosed as disseminated intravascular coagulation (DIC) syndrome due to advanced prostate cancer. Treatment with anti-DIC therapy, blood transfusion, subcutaneous injection of degarelix acetate settled the DIC. Abiraterone hydrochloride and prednisolone was added as we confirmed Gleason score5+4 in the pathological examination. He has been alive for 15 months after diagnosis without desease progression.
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- 2020
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35. Critical role of GRP receptor–expressing neurons in the spinal transmission of imiquimod‐induced psoriatic itch
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Shiroh Kishioka, Norikazu Kiguchi, Yohji Fukazawa, Fumihiro Saika, and Shinsuke Matsuzaki
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Male ,Micro Reports ,Gene Expression ,Imiquimod ,AMPA receptor ,Pharmacology ,Micro Report ,Mice ,Downregulation and upregulation ,Adjuvants, Immunologic ,Psoriasis ,AMPA ,Medicine ,Gene silencing ,Animals ,Pharmacology (medical) ,Receptor ,skin and connective tissue diseases ,Neurons ,business.industry ,Pruritus ,spinal cord ,psoriasis ,Scratching ,Spinal cord ,medicine.disease ,Mice, Inbred C57BL ,Posterior Horn Cells ,Receptors, Bombesin ,Psychiatry and Mental health ,Clinical Psychology ,medicine.anatomical_structure ,GRP ,business ,medicine.drug - Abstract
Aim Ample evidence indicates that gastrin‐releasing peptide receptor (GRPR)–expressing neurons play a critical role in the transmission of acute itch. However, the pathophysiology of spinal mechanisms underlying intractable itch such as psoriasis remains unclear. In this study, we aimed to determine whether itch‐responsive GRPR+ neurons contribute to the spinal transmission of imiquimod (IMQ)‐induced psoriatic itch. Methods To generate a psoriasis model, C57BL/6J mice received a daily topical application of 5% IMQ cream on their shaved back skin for 7‐10 consecutive days. GRP+ neurons were inhibited using Cre‐dependent expression of Gi‐designer receptors exclusively activated by designer drugs (DREADDs), while GRPR+ neurons were ablated by intrathecal administration of bombesin‐saporin. Results Repeated topical application of IMQ elicited psoriasis‐like dermatitis and scratching behaviors. The mRNA expression levels of GRP and GRPR were upregulated in the cervical spinal dorsal horn (SDH) on days 7 and 10 after IMQ application. Either chemogenetic silencing of GRP+ neurons by Gi‐DREADD or ablation of GRPR+ neurons significantly attenuated IMQ‐induced scratching behaviors. Conclusion The GRP‐GRPR system might be enhanced in the SDH, and itch‐responsive GRPR+ neurons largely contribute to intractable itch in a mouse model of psoriasis., The aim of this study was to determine whether itch‐responsive gastrin‐releasing peptide receptor (GRPR)–expressing neurons contribute to the spinal transmission of imiquimod (IMQ)‐induced psoriatic itch. We found that mRNA expression of GRP and GRPR was upregulated in the cervical spinal dorsal horn after IMQ application, and IMQ‐induced psoriatic itch was suppressed by either chemogenetic inhibition of GRP+ neurons or ablation of GRPR+ neurons.
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- 2020
36. Region‐ and neuronal‐subtype‐specific expression of Na,<scp>K‐ATPase</scp>alpha and beta subunit isoforms in the mouse brain
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Koshi Murata, Tomoki Kinoshita, Tatsuya Ishikawa, Yugo Fukazawa, Kazuki Kuroda, and Minako Hoshi
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Male ,0301 basic medicine ,Gene isoform ,Mice ,03 medical and health sciences ,0302 clinical medicine ,ATP1A2 ,medicine ,Animals ,Protein Isoforms ,Premovement neuronal activity ,Na+/K+-ATPase ,Research Articles ,Neurons ,biology ,General Neuroscience ,Brain ,Na,K‐ATPase beta subunit isoform ,neuron ,Cell biology ,030104 developmental biology ,medicine.anatomical_structure ,nervous system ,ATP1B3 ,Na,K‐ATPase alpha subunit isoform ,immunohistochemistry ,biology.protein ,in situ hybridization ,ATP1B1 ,Neuron ,Sodium-Potassium-Exchanging ATPase ,030217 neurology & neurosurgery ,Parvalbumin ,Research Article - Abstract
Na,K‐ATPase is a ubiquitous molecule contributing to the asymmetrical distribution of Na+ and K+ ions across the plasma membrane and maintenance of the membrane potential, a prerequisite of neuronal activity. Na,K‐ATPase comprises three subunits (α, β, and FXYD). The α subunit has four isoforms in mice, with three of them (α1, α2, and α3) expressed in the brain. However, the functional and biological significances of the different brain isoforms remain to be fully elucidated. Recent studies have revealed the association of Atp1a3, a gene encoding α3 subunit, with neurological disorders. To map the cellular distributions of the α subunit isoforms and their coexpression patterns, we evaluated the mRNA expression of Atp1a1, Atp1a2, and Atp1a3 by in situ hybridization in the mouse brain. Atp1a1 and Atp1a3 were expressed in neurons, whereas Atp1a2 was almost exclusively expressed in glial cells. Most neurons coexpressed Atp1a1 and Atp1a3, with highly heterogeneous expression levels across the brain regions and neuronal subtypes. We identified parvalbumin (PV)‐expressing GABAergic neurons in the hippocampus, somatosensory cortex, and retrosplenial cortex as an example of a neuronal subtype expressing low Atp1a1 and high Atp1a3. The expression of Atp1b isoforms was also heterogeneous across brain regions and cellular subtypes. The PV‐expressing neurons expressed a high level of Atp1b1 and a low level of Atp1b2 and Atp1b3. These findings provide basic information on the region‐ and neuronal‐subtype‐dependent expression of Na,K‐ATPase α and β subunit isoforms, as well as a rationale for the selective involvement of neurons expressing high levels of Atp1a3 in neurological disorders., Na,K‐ATPase comprises α (Atp1a), β (Atp1b), and FXYD subunits, and each subunit has isoforms. In situ hybridization for α and β subunit isoforms revealed regional‐ and neuronal‐subtype‐specific expression of the isoforms in the mouse brain. The photograph shows Atp1a1 (red) and Atp1a3 (green) expression in the hippocampal dentate gyrus (stained with DAPI, blue).
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- 2020
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37. Physical disuse contributes to widespread chronic mechanical hyperalgesia, tactile allodynia, and cold allodynia through neurogenic inflammation and spino-parabrachio-amygdaloid pathway activation
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Takashi Nakano, Makoto Tsuda, Munekazu Naito, Koji Osuka, Yusuke Ohmichi, Mika Ohmichi, Dominika Kanikowska, Ryoichi Tashima, Hiromu Yawo, Kaori Fukushige, and Yugo Fukazawa
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medicine.medical_specialty ,Vascular permeability ,Optogenetics ,Rats, Sprague-Dawley ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,030202 anesthesiology ,Internal medicine ,Animals ,Medicine ,Pain Measurement ,Muscle contracture ,Evans Blue ,Neurogenic inflammation ,business.industry ,Chronic pain ,medicine.disease ,Rats ,Anesthesiology and Pain Medicine ,Allodynia ,Endocrinology ,Nociception ,Neurology ,chemistry ,Hyperalgesia ,Neurology (clinical) ,Chronic Pain ,Neurogenic Inflammation ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Physical disuse could lead to a state of chronic pain typified by complex regional pain syndrome type I due to fear of pain through movement (kinesiophobia) or inappropriate resting procedures. However, the mechanisms by which physical disuse is associated with acute/chronic pain and other pathological signs remain unresolved. We have previously reported that inflammatory signs, contractures, disuse muscle atrophy, spontaneous pain-like behaviors, and chronic widespread mechanical hyperalgesia based on central plasticity occurred after 2-weeks of cast immobilization in chronic post-cast pain (CPCP) rat model. In the present study, we also demonstrated dystrophy-like changes, both peripheral nociceptive signals and activation of the central pain pathway in CPCP rats. This was done by the following methods: (1) vascular permeability (Evans blue dye) and inflammatory- and oxidative stress-related messenger RNA (mRNA) changes (real-time quantitative polymerase chain reaction); (2) immunofluorescence of pERK and/or c-Fos expression in the spino-parabrachio-amygdaloid pathway; and (3) blockade of nociceptive-related signals using sciatic nerve block (SNB). Furthermore, we demonstrated tactile allodynia using an optogenetic method in a transgenic rat line (W-TChR2V4), cold allodynia using the acetone test, and activation of dorsal horn neurons in the chronic phase associated with chronic mechanical hyperalgesia using c-Fos immunofluorescence. In addition, we showed that nociceptive signals in the acute phase are involved in chronic pathological pain-like behaviors by studying the effects of SNB. Thus, we conclude that physical disuse contributes to dystrophy-like changes, spontaneous pain-like behavior, and chronic widespread pathological pain-like behaviors in CPCP rats after 2 weeks of cast immobilization.
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- 2020
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38. Intraoperative Cardiac Arrest During Adult Liver Transplantation: Incidence and Risk Factor Analysis From 7 Academic Centers in the United States
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Sher-Lu Pai, Samuel DeMaria, James D. Kindscher, Tetsuro Sakai, Todd M. Kor, Guy Efune, Jeron Zerillo, Laurence C. Torsher, Bryan Hill, Michael A. Hall, Hung-Mo Lin, Kristen K. Burton, Ryan M Chadha, David B. Wax, Xiaoyu Liu, Sang Jo Kim, Natalie K. Smith, Jaffer M. Odeh, Cynthia Wang, David R. Wetzel, Mia Ashley Spad, M. Susan Mandell, and Kyota Fukazawa
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Liver transplantation ,Young Adult ,03 medical and health sciences ,Liver disease ,0302 clinical medicine ,Risk Factors ,030202 anesthesiology ,Internal medicine ,medicine ,Humans ,Mortality ,Risk factor ,Intraoperative Complications ,Aged ,Retrospective Studies ,Aged, 80 and over ,Academic Medical Centers ,business.industry ,Incidence ,Incidence (epidemiology) ,Mortality rate ,Retrospective cohort study ,Odds ratio ,Middle Aged ,medicine.disease ,United States ,Heart Arrest ,Liver Transplantation ,Transplantation ,Anesthesiology and Pain Medicine ,Female ,business ,030217 neurology & neurosurgery - Abstract
BACKGROUND Intraoperative cardiac arrest (ICA) has a reported frequency of 1 in 10,000 anesthetics but has a much higher estimated incidence in orthotopic liver transplantation (OLT). Single-center studies of ICA in OLT are limited by small sample size that prohibits multivariable regression analysis of risks. METHODS Utilizing data from 7 academic medical centers, we performed a retrospective, observational study of 5296 adult liver transplant recipients (18-80 years old) between 2000 and 2017 to identify the rate of ICA, associated risk factors, and outcomes. RESULTS ICA occurred in 196 cases (3.7% 95% confidence interval [CI], 3.2-4.2) and mortality occurred in 62 patients (1.2%). The intraoperative mortality rate was 31.6% in patients who experienced ICA. In a multivariable generalized linear mixed model, ICA was associated with body mass index (BMI)
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- 2020
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39. Double porous media modeling in computational fluid dynamics for hemodynamics of stent-assisted coiling of intracranial aneurysms: A technical case report
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Ryuta Yasuda, Katsuhiro Tanaka, Fujimaro Ishida, Yasuyuki Umeda, Takanori Sano, Masato Shiba, Tomoyuki Kishimoto, Keiji Fukazawa, Hiroshi Tanemura, Yoichi Miura, Kazuhiro Furukawa, Masanori Tsuji, Hidenori Suzuki, and Shinichi Shimosaka
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Materials science ,business.industry ,Endovascular therapy ,lcsh:QP351-495 ,Hemodynamics ,Intracranial stent ,General Medicine ,Computational fluid dynamics ,equipment and supplies ,medicine.disease ,Stent assisted coiling ,lcsh:Neurophysiology and neuropsychology ,surgical procedures, operative ,Aneurysm ,cardiovascular system ,medicine ,cardiovascular diseases ,business ,Porous medium ,Cerebral aneurysm ,Flow diverter ,Biomedical engineering - Abstract
Endovascular therapy is developing, but not all aneurysms are completely obliterated even by using the techniques such as stent-assisted coiling or a flow diverter. To predict the aneurysm-occlusion status after stent-assisted coiling, the authors applied computational fluid dynamics (CFD) using porous media modeling to propose a new technique with the double porous media settings, one of which is a porous media setting for a coiled aneurysm and another of which is that for an intracranial stent. CFD with double porous media settings using preoperative aneurysm geometry may be useful for simulating the hemodynamic changes in intracranial aneurysms after stent-assisted coiling.
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- 2020
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40. GLIS1, a novel hypoxia-inducible transcription factor, promotes breast cancer cell motility via activation of WNT5A
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Hidemasa Bono, Nobuyuki Hirohashi, Keiji Tanimoto, Akinori Kanai, Hideaki Nakamura, Hidetaka Eguchi, Hiromasa Ono, Takahiro Fukazawa, and Kazumi Shimamoto
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0301 basic medicine ,Cancer Research ,Apoptosis ,Breast Neoplasms ,Biology ,GLIS1 ,Wnt-5a Protein ,Transcriptome ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Cell Movement ,Biomarkers, Tumor ,Tumor Cells, Cultured ,medicine ,Humans ,Neoplasm Invasiveness ,Transcription factor ,Cell Proliferation ,Regulation of gene expression ,Gene knockdown ,Cell growth ,Cell migration ,General Medicine ,Prognosis ,medicine.disease ,DNA-Binding Proteins ,Gene Expression Regulation, Neoplastic ,Survival Rate ,030104 developmental biology ,030220 oncology & carcinogenesis ,Cancer research ,Female ,Transcription Factors - Abstract
We previously demonstrated that expression of a Krüppel-like zinc finger transcription factor, GLIS1, dramatically increases under hypoxic conditions via a transcriptional mechanism induced by HIF-2α cooperating with AP-1 members. In this study, we focused on the functional roles of GLIS1 in breast cancer. To uncover its biological function, the effects of altered levels of GLIS1 in breast cancer cell lines on cellular growth, wound-healing and invasion capacities were assessed. Knockdown of GLIS1 using siRNA in BT-474 cells resulted in significant growth stimulation under normoxia, while attenuation was found in the cell invasion assay under hypoxic conditions. In MDA-MB-231 cells expressing exogenous 3xFLAG-tagged GLIS1, GLIS1 attenuated cell proliferation and enhanced cell mobility and invasion capacities under normoxia. In addition, breast cancer cells expressing GLIS1 acquired resistance to irradiation. Whole transcriptome analysis clearly demonstrated that downstream signals of GLIS1 are related to various cellular functions. Among the genes with increased expression, we focused on WNT5A. Knockdown of WNT5A indicated that enhancement of acquired cell motility in the MDA-MB-231 cells expressing GLIS1 was mediated, at least in part, by WNT5A. In an analysis of publicly available data, patients with estrogen receptor-negative breast cancer showing high levels of GLIS1 expression showed much worse prognosis than those with low levels. In summary, hypoxia-induced GLIS1 plays significant roles in breast cancer cells via regulation of gene expression related to cell migration and invasion capacities, resulting in poorer prognosis in patients with advanced breast cancer.
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- 2020
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41. Virtual histology intravascular ultrasound evaluation of coronary artery lesions within 1 year and more than 10 years after the onset of Kawasaki disease
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Yasuhiko Itoh, Makoto Watanabe, Shunichi Ogawa, Yoshiaki Hashimoto, Masanori Abe, Takashi Ohkubo, Ryuji Fukazawa, and Koji Hashimoto
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Adult ,Male ,medicine.medical_specialty ,Intimal hyperplasia ,Adolescent ,medicine.medical_treatment ,Coronary Artery Disease ,Mucocutaneous Lymph Node Syndrome ,030204 cardiovascular system & hematology ,Coronary Angiography ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Intravascular ultrasound ,medicine ,Humans ,030212 general & internal medicine ,Age of Onset ,Child ,Ultrasonography, Interventional ,Cardiac catheterization ,medicine.diagnostic_test ,business.industry ,Infant ,Arteriosclerosis ,Atherosclerosis ,medicine.disease ,Coronary Vessels ,Coronary arteries ,medicine.anatomical_structure ,Child, Preschool ,Cardiology ,Female ,Kawasaki disease ,Cardiology and Cardiovascular Medicine ,business ,Calcification ,Artery - Abstract
Background Coronary artery evaluation by virtual histological intravascular ultrasonography (VH-IVUS) late in Kawasaki disease (KD) shows intimal thickening, calcification, fatty components, and necrosis of regressed coronary artery lesions (CALs). However, it is not clear when these VH-IVUS findings start to occur. Therefore, we evaluated coronary arteries using VH-IVUS in patients with early-stage KD and tried to determine whether these atherosclerotic findings on VH-IVUS were different from that in patients with late-stage KD. Methods Eighteen patients with KD aged between 1 and 32 years who had CALs and underwent cardiac catheterization between January 1, 2008 and December 31, 2014 were included. They were divided into 2 groups—those with the disease for 10 years (group B). VH-IVUS findings were compared between the groups. The coronary arteries were divided based on coronary angiography findings into normal, regressed (dilated CALs regressed to a normal size), and aneurysmal lesions. The Wilcoxon signed-rank test was used in the statistical analysis. Results In both regressed and aneurysmal lesions, marked intimal proliferation and atherosclerotic findings (fibro-fatty and necrotic core lesions) were observed. In addition, there was no difference in the area percentage of atherosclerosis between the groups. Conclusions VH-IVUS revealed that atherosclerotic-like findings exist in CALs in patients with KD, even within a year of onset. The findings were almost the same in those with the disease for >10 years. Because there is no histological evidence of atherosclerosis in KD, these VH-IVUS findings may indicate complex histological findings of KD. Nevertheless, early interventions to help reduce the risk factors of atherosclerosis may be required in these patients.
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- 2020
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42. A case report of immediate complete denture fabrication using an intraoral scanner
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Takuya Kobayashi, Yutaro Oyamada, Yu Yonezawa, Soichiro Hara, Hisatomo Kondo, Saori Aki, and Syouta Fukazawa
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Orthodontics ,Intraoral scanner ,Fabrication ,business.industry ,Immediate complete denture ,Medicine ,General Medicine ,business - Published
- 2020
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43. Surveillance of Shiga toxin-producing Escherichia coli and Campylobacter spp. in wild Japanese deer (Cervus nippon) and boar (Sus scrofa)
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Yuuji Kodera, Jiye Shin, Takehisa Chuma, Takaki Nakamura, Takayasu Inadome, Ichiro Oshima, Kanako Ishihara, Koji Takayama, Mizuki Toda, Motoki Fukazawa, Katsunori Shioya, Hiroshi Shimoda, Ryunosuke Ai, Ken Maeda, Yoshiyuki Tomino, Masako Andoh, Yuta Horiuchi, Ai Takano, and Kenzo Yonemitsu
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Serotype ,Veterinary medicine ,Cervus ,General Veterinary ,biology ,Campylobacter ,medicine.disease_cause ,biology.organism_classification ,Campylobacter hyointestinalis ,Campylobacter coli ,Genotype ,medicine ,Escherichia coli ,Feces - Abstract
Increasing game meat consumption in Japan requires the dissemination of safety information regarding the presence of human pathogens in game animals. Health information regarding the suitability of these animals as a meat source is not widely available. In this study, we aimed to evaluate the safety of game meat and detect potential human pathogens in wild deer (Cervus nippon) and boar (Sus scrofa) in Japan. Fecal samples from 305 wild deer and 248 boars of Yamaguchi, Kagoshima, and Tochigi prefectures collected monthly for 2 years were examined for the prevalence of Shiga toxin-producing Escherichia coli (STEC) and Campylobacter spp. STEC was isolated from 51 deer consistently throughout the year and from three boars; O-antigen genotype O146, the expression of stx2b, and eaeA absence (n=33) were the major characteristics of our STEC isolates. Other serotypes included the medically important O157, stx2b or stx2c, and eaeA-positive (n=4) and O26, stx1a, and eaeA-positive strains (n=1). Campylobacter spp. were isolated from 17 deer and 31 boars. Campylobacter hyointestinalis was the most common species isolated from 17 deer and 25 boars, whereas Campylobacter lanienae and Campylobacter coli were isolated from three and two boars, respectively. Seasonal trends for the isolation of these bacteria were not significant. This study demonstrates that wild game animals carry human pathogens; therefore, detailed knowledge of the safe handling of game meat is needed to prevent foodborne infections.
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- 2020
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44. Adipose tissue‐derived stem cells suppress coronary arteritis of Kawasaki diseasein vivo
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Ryuji Fukazawa, Naohito Ohno, Takahiro Ueda, Ryoichi Uchimura, Yasuhiko Itoh, Makoto Migita, Jun Hayakawa, Ryuji Ohashi, and Noriko Nagi-Miura
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Male ,Pathology ,medicine.medical_specialty ,medicine.medical_treatment ,Adipose tissue ,Coronary Artery Disease ,Mucocutaneous Lymph Node Syndrome ,030204 cardiovascular system & hematology ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,In vivo ,030225 pediatrics ,Candida albicans ,medicine ,Animals ,Arteritis ,business.industry ,Stem Cells ,medicine.disease ,Coronary Vessels ,Disease Models, Animal ,Cytokine ,Adipose Tissue ,Mice, Inbred DBA ,Pediatrics, Perinatology and Child Health ,Cytokines ,Kawasaki disease ,Stem cell ,business ,Vasculitis ,Stem Cell Transplantation - Abstract
BACKGROUND Kawasaki disease (KD) is a systemic inflammatory disease resulting in an acute febrile syndrome commonly affecting children younger than 5 years. Coronary arteritis in KD is occasionally non-responsive to several treatments. Recently, adipose tissue-derived stem cells (ADSCs) have been shown to have anti-inflammatory, immunosuppressive, and tissue-repair characteristics and are considered a useful treatment for inflammatory disease. The present study aimed to elucidate whether the administration of ADSCs can suppress KD-associated vasculitis in vivo. METHODS Candida albicans water-soluble fraction is often used to model KD via the induction of severe coronary arteritis. Kawasaki disease model mice were intravenously administered ADSCs and phosphate-buffered saline (PBS). On day 29, the mice were sacrificed and hearts from mice in each group were dissected. This was followed by serum collection. Cardiac tissue sections were subjected to histopathological examination to evaluate the inflammatory area. The levels of pro-inflammatory cytokines in the serum were analyzed at days 15 and 29. The survival rates of both groups were compared. RESULTS The mean inflammatory area in coronary arteritis was significantly lower in the ADSC group compared to the PBS group (P < 0.01). Furthermore, the levels of pro-inflammatory cytokines, such as IL-1β, IL-12, IL-17, RANTES, INF-γ, and TNF-α, in the ADSC group were significantly lower than those in the PBS group. Moreover, the ADSC group had a significantly higher survival rate than the PBS group. CONCLUSIONS These findings highlight that ADSCs have anti-inflammatory and immune regulatory functions that could provide novel cell-based therapeutic strategies for severe KD.
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- 2020
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45. Successful secondary infection prevention using the standard precautions recommended by dialysis-related societies and hemodialysis with cohort isolation at a hemodialysis clinic after the identification of a COVID-19-positive outpatient
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Akira Kato, Megumi Shiratori, Emi Hiyama, Satomi Haga, Asami Kurii, Michie Shimizu, Ryoko Tatsumi, Shunichiro Urabe, Mitsuko Ozaki, Mieko Nagumo, Marie Yamamoto, Shyohei Matsuzawa, Izumi Mizushina, Momoko Fukazawa, Kumiko Komori, Yasuhisa Kurata, Toru Hyodo, and Motoko Kato
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medicine.medical_specialty ,business.industry ,Internal medicine ,medicine ,business - Published
- 2020
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46. Targeting ROR1 in combination with pemetrexed in malignant mesothelioma cells
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Hidekazu Nakanishi, Hiromichi Yamane, Masami Takeyama, Takuya Fukazawa, Nozomu Nakagawa, Hiroyuki Kohara, Noriko Miyake, Nobuaki Ochi, Yasunari Nagasaki, Naruhiko Ichiyama, Tomoki Yamatsuji, Nagio Takigawa, Tomoko Ikeda, Tatsuyuki Kawahara, Etsuko Yokota, and Yoshio Naomoto
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Cancer Research ,Pleural Neoplasms ,Antineoplastic Agents ,Apoptosis ,Pemetrexed ,Receptor Tyrosine Kinase-like Orphan Receptors ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Tumor Cells, Cultured ,medicine ,Humans ,RNA, Small Interfering ,Protein kinase B ,Cell Proliferation ,business.industry ,Mesothelioma, Malignant ,Transfection ,Combined Modality Therapy ,030104 developmental biology ,Real-time polymerase chain reaction ,Oncology ,chemistry ,Cell culture ,030220 oncology & carcinogenesis ,ROR1 ,Cancer research ,Growth inhibition ,business ,Signal Transduction ,medicine.drug - Abstract
Objective Receptor tyrosine kinase-like orphan receptor 1 (ROR1) is overexpressed in a subset of malignant cells. However, it remains unknown whether ROR1 is targetable in malignant mesothelioma (MM). Therefore, in this study, we investigated the effects of ROR1 inhibition in mesothelioma cells. Materials and methods Growth inhibition, colony formation, apoptosis, and mRNA/protein levels using siRNA-transfected MM cells were evaluated. Cluster analysis using Gene Expression Omnibus repository of transcriptomic information was also performed. Results Our results indicated that in three (H2052, H2452, and MESO-1) among four MM cell lines, ROR1 inhibition had anti-proliferative and apoptotic effects and suppressed the activation of AKT and STAT3. Although growth inhibition by siROR1 was minimal in another mesothelioma cell line (H28), colony formation was significantly suppressed. Microarray, quantitative polymerase chain reaction, and Western blot analyses showed that there were differences in the suppression of mRNA and proteins between H2452 and H28 cells transfected with siROR1 compared with those transfected with control siRNA. Cluster analysis further showed that MM tumors had relatively high ROR1 expression, although the cluster in them was different from that in MM cell lines. Thymidylate synthase, a target of pemetrexed, was downregulated in H2452 cells transfected with siROR1. Accordingly, a combination of pemetrexed with siROR1 was found to be effective in the three MM cell lines we studied. Conclusion Our findings may provide novel therapeutic insight into the treatment of advanced MM.
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- 2020
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47. [A CASE OF PELVIC CONGESTION SYNDROME SUCCESSFULLY TREATED WITH ENDOVASCULAR THERAPY]
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Kazuki Kobayashi, Takuma Nirei, Tadashi Tabei, Risa Shinoki, Sogo Tsutsumi, Jun Yoshigi, Hiroki Ito, Takeshi Fukazawa, and Masashi Imano
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medicine.medical_specialty ,endocrine system diseases ,medicine.diagnostic_test ,Visual analogue scale ,business.industry ,Urology ,Uterine venous plexus ,medicine.medical_treatment ,Venography ,Venous plexus ,Pelvic congestion syndrome ,medicine.disease ,Pathophysiology ,Surgery ,medicine.anatomical_structure ,Varicose veins ,medicine ,Embolization ,medicine.symptom ,business - Abstract
An 84-year-old woman was referred for lower abdominal pain lasting more than six months. Computed tomography showed a left ovarian varicose vein and a peri-uterine venous plexus. Due to suspected pelvic congestion syndrome, left ovarian venography and left ovarian embolization were performed. Blood flowed back through the dilated left ovarian vein and through the uterine venous plexus to the right ovarian vein. Embolization of the left ovarian vein with a sclerosing agent resulted in the disappearance of the venous congestion. Preoperative Visual Analogue Scale was 7, which decreased to 3 after the operation. As a result, improvements in QOL were recognized. Although pelvic congestion syndrome is a treatable disease, its recognition as a urological disease is low. Here, we have reported a case of pelvic congestion syndrome in which symptoms improved with treatment and have discussed its pathophysiology and treatment.
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- 2021
48. Estimating Patient Independence with Sleep Sensors
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Hirokazu Masuda, Yusuke Fukazawa, Yamada Wataru, Keiichi Ochiai, Mizuki Shirai, and Eiji Kumakawa
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medicine.medical_specialty ,Activities of daily living ,Rehabilitation ,business.industry ,Computer science ,medicine.medical_treatment ,Functional Independence Measure ,Task (project management) ,Physical medicine and rehabilitation ,medicine ,Independence (mathematical logic) ,Sleep (system call) ,business ,Physical therapist ,human activities ,Wearable technology - Abstract
The aging population problem is growing worldwide and physical therapists must be able to care for the elderly and injured efficiently. One burden facing physical therapists is determining the Functional Independence Measure (FIM), which measures the level of independence in activities of daily living for the elderly and injured. This measure is used in designing rehabilitation programs. Determining the FIM is a time-consuming task for both physical therapists and rehabilitation patients because it requires an interview. Some researchers have explored estimating FIM using wearable devices; however, it is burdensome for patients to wear such devices continuously. Therefore, we propose a method to estimate FIM motor items automatically using machine learning and sleep sensors. The proposed method classifies patients into three levels of FIM values that are referred to as s-FIM using vital data acquired through sleep sensors, personal data (age, gender, and Body Mass Index), and s-FIM values from the previous day. The results of a one-week study based on 19 patients showed that the proposed method had a mean accuracy of 0.87 for s-FIM motor items. The results were more accurate than continuing to use the s-FIM values determined by the physical therapist without updating them for one week.
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- 2021
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49. Long-term survival in a dog with primary hepatic neuroendocrine tumor treated with toceranib phosphate
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Tetsuya Kobayashi, Shinichiro Nishiyama, Masanao Ichimata, Kei Harada, Fukiko Matsuyama, Yumiko Kagawa, Eri Fukazawa, Tetsushi Yamagami, Ryuzo Katayama, and Atsushi Toshima
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Male ,carcinoid ,medicine.medical_specialty ,Pathology ,Toceranib Phosphate ,Indoles ,Toceranib ,biology.animal_breed ,French bulldog ,Neuroendocrine tumors ,Dogs ,Long term survival ,Internal Medicine ,Medicine ,Animals ,Pyrroles ,Dog Diseases ,primary hepatic neuroendocrine tumor ,General Veterinary ,biology ,business.industry ,medicine.disease ,Note ,Neuroendocrine Tumors ,dog ,Histopathology ,Quadrate Lobe ,Primary Hepatic Neuroendocrine Tumor ,Autopsy ,business ,toceranib ,long-term survival ,medicine.drug - Abstract
Primary hepatic neuroendocrine tumors (PHNETs) are rare in dogs, and limited information exists about the treatment of these tumors. A 12-year-old castrated male French bulldog was presented to our clinic with gastrointestinal signs. Diagnostic tests revealed increased hepatic enzyme levels, a mass in the hepatic quadrate lobe, multiple intrahepatic nodules, and enlarged hepatic hilar lymph nodes. The liver mass was diagnosed cytologically as a malignant epithelial tumor suspected to be of neuroendocrine origin. The dog was treated with single-agent toceranib phosphate (TOC) and survived 25.1 months after the initial presentation. On necropsy, a liver mass was found and was subsequently diagnosed as a PHNET on histopathology. To the best of our knowledge, this is the first report of long-term survival in a dog with PHNET treated with TOC.
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- 2021
50. Inhibiting SARS-CoV-2 infection in vitro by suppressing its receptor, angiotensin-converting enzyme 2, via aryl-hydrocarbon receptor signal
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Toshihito Nomura, Takahiro Fukazawa, Hidemasa Bono, Takemasa Sakaguchi, Nobuyuki Hirohashi, Nazmul Tanuza, Kiichi Hirota, Yoshiyuki Matsuo, and Keiji Tanimoto
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Science ,media_common.quotation_subject ,Carbazoles ,Drug Evaluation, Preclinical ,Article ,Nuclear receptors ,Chlorocebus aethiops ,Basic Helix-Loop-Helix Transcription Factors ,Cytochrome P-450 CYP1A1 ,Animals ,Humans ,RNA-Seq ,Transcriptomics ,Internalization ,Receptor ,Vero Cells ,media_common ,Regulation of gene expression ,Multidisciplinary ,Dose-Response Relationship, Drug ,biology ,SARS-CoV-2 ,Chemistry ,COVID-19 ,Hep G2 Cells ,Virus Internalization ,respiratory system ,Aryl hydrocarbon receptor ,In vitro ,respiratory tract diseases ,COVID-19 Drug Treatment ,Cell biology ,Gene Expression Regulation ,Receptors, Aryl Hydrocarbon ,Nuclear receptor ,Gene Knockdown Techniques ,Angiotensin-converting enzyme 2 ,biology.protein ,Medicine ,Angiotensin-Converting Enzyme 2 ,Signal transduction ,Omeprazole ,hormones, hormone substitutes, and hormone antagonists ,Signal Transduction - Abstract
Since understanding molecular mechanisms of SARS-CoV-2 infection is extremely important for developing effective therapies against COVID-19, we focused on the internalization mechanism of SARS-CoV-2 via ACE2. Although cigarette smoke is generally believed to be harmful to the pathogenesis of COVID-19, cigarette smoke extract (CSE) treatments were surprisingly found to suppress the expression of ACE2 in HepG2 cells. We thus tried to clarify the mechanism of CSE effects on expression of ACE2 in mammalian cells. Because RNA-seq analysis suggested that suppressive effects on ACE2 might be inversely correlated with induction of the genes regulated by aryl hydrocarbon receptor (AHR), the AHR agonists 6-formylindolo(3,2-b)carbazole (FICZ) and omeprazole (OMP) were tested to assess whether those treatments affected ACE2 expression. Both FICZ and OMP clearly suppressed ACE2 expression in a dose-dependent manner along with inducing CYP1A1. Knock-down experiments indicated a reduction of ACE2 by FICZ treatment in an AHR-dependent manner. Finally, treatments of AHR agonists inhibited SARS-CoV-2 infection into Vero E6 cells as determined with immunoblotting analyses detecting SARS-CoV-2 specific nucleocapsid protein. We here demonstrate that treatment with AHR agonists, including FICZ, and OMP, decreases expression of ACE2 via AHR activation, resulting in suppression of SARS-CoV-2 infection in mammalian cells.
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- 2021
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