2,945 results on '"Sato Daisuke"'
Search Results
52. Changes in colorectal cancer treatment during the COVID-19 pandemic in Japan: Interrupted time-series analysis using the National Database of Japan
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Fujita, Misuzu, Yamaguchi, Kazuya, Nagashima, Kengo, Suzuki, Kiminori, Kasai, Tokuzo, Hashimoto, Hideyuki, Onouchi, Yoshihiro, Sato, Daisuke, Fujisawa, Takehiko, and Hata, Akira
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- 2023
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53. Singularity Free Direct Calculation of Spontaneous Mass Generation
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Aoki, Ken-Ichi, Kobayashi, Tamao, Kumamoto, Shin-Ichiro, Onai, Shinnosuke, and Sato, Daisuke
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High Energy Physics - Theory ,Nuclear Theory - Abstract
We propose a new iterative method to directly calculate the spontaneous mass generation. It is regarded as a new regularization method resembling the finite volume calculation which assures non-negative fluctuation property at every stage. We work with the Nambu--Jona-Lasinio model and the strong coupling gauge theory where the dynamical chiral symmetry breaking occurs. We are able to conclude the physical mass definitely without encountering any singularity nor recourse to any additional consideration like the free energy comparison. However in special case of the 1st order phase transition, we find that the iterative method has a chance to go wrong.
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- 2019
54. Impact of High Implantation of Transcatheter Aortic Valve on Subsequent Conduction Disturbances and Coronary Access
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Ochiai, Tomoki, Yamanaka, Futoshi, Shishido, Koki, Moriyama, Noriaki, Komatsu, Ikki, Yokoyama, Hiroaki, Miyashita, Hirokazu, Sato, Daisuke, Sugiyama, Yoichi, Hayashi, Takahiro, Yamashita, Takayoshi, Tobita, Kazuki, Matsumoto, Takashi, Mizuno, Shingo, Tanaka, Yutaka, Murakami, Masato, Takahashi, Saeko, Makkar, Raj, and Saito, Shigeru
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- 2023
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55. Possible mechanism for improving the endogenous immune system through the blockade of peripheral μ-opioid receptors by treatment with naldemedine
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Gondoh, Eizoh, Hamada, Yusuke, Mori, Tomohisa, Iwazawa, Yusuke, Shinohara, Asami, Narita, Michiko, Sato, Daisuke, Tezuka, Hiroyuki, Yamauchi, Takayasu, Tsujimura, Mayu, Yoshida, Sara, Tanaka, Kenichi, Yamashita, Kensuke, Akatori, Haruka, Higashiyama, Kimio, Arakawa, Kazuhiko, Suda, Yukari, Miyano, Kanako, Iseki, Masako, Inada, Eiichi, Kuzumaki, Naoko, and Narita, Minoru
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- 2022
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56. Two cases of successful transcatheter aortic valve implantation in patients with quadricuspid aortic valve stenosis
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Sato, Daisuke, Ochiai, Tomoki, Shishido, Koki, Moriyama, Noriaki, Yamanaka, Futoshi, and Saito, Shigeru
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- 2023
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57. Preliminary report on Permian radiolarians from the Numakuma peninsula in Japan: Paleontological evidence for the presence of the Ultra-Tamba Belt
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Ito, Tsuyoshi and Sato, Daisuke
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- 2023
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58. Morphological difference of Escherichia coli non-heme ferritin iron cores reconstituted in the presence and absence of inorganic phosphate
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Kuwata, Takumi, Sato, Daisuke, Yanagida, Yuki, Aoki, Eriko, Fujiwara, Kazuo, Yoshimura, Hideyuki, and Ikeguchi, Masamichi
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- 2022
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59. A stochastic model of ion channel cluster formation in the plasma membrane
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Sato, Daisuke, Hernández-Hernández, Gonzalo, Matsumoto, Collin, Tajada, Sendoa, Moreno, Claudia M, Dixon, Rose E, O’Dwyer, Samantha, Navedo, Manuel F, Trimmer, James S, Clancy, Colleen E, Binder, Marc D, and Santana, L Fernando
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Medical Physiology ,Biomedical and Clinical Sciences ,Neurosciences ,1.1 Normal biological development and functioning ,Underpinning research ,Calcium Channels ,Cell Membrane ,Cluster Analysis ,Computer Simulation ,Humans ,Models ,Biological ,Muscle ,Smooth ,Vascular ,Myocytes ,Cardiac ,Neurons ,Stochastic Processes ,Physiology ,Biochemistry and cell biology ,Zoology ,Medical physiology - Abstract
Ion channels are often found arranged into dense clusters in the plasma membranes of excitable cells, but the mechanisms underlying the formation and maintenance of these functional aggregates are unknown. Here, we tested the hypothesis that channel clustering is the consequence of a stochastic self-assembly process and propose a model by which channel clusters are formed and regulated in size. Our hypothesis is based on statistical analyses of the size distributions of the channel clusters we measured in neurons, ventricular myocytes, arterial smooth muscle, and heterologous cells, which in all cases were described by exponential functions, indicative of a Poisson process (i.e., clusters form in a continuous, independent, and memory-less fashion). We were able to reproduce the observed cluster distributions of five different types of channels in the membrane of excitable and tsA-201 cells in simulations using a computer model in which channels are "delivered" to the membrane at randomly assigned locations. The model's three parameters represent channel cluster nucleation, growth, and removal probabilities, the values of which were estimated based on our experimental measurements. We also determined the time course of cluster formation and membrane dwell time for CaV1.2 and TRPV4 channels expressed in tsA-201 cells to constrain our model. In addition, we elaborated a more complex version of our model that incorporated a self-regulating feedback mechanism to shape channel cluster formation. The strong inference we make from our results is that CaV1.2, CaV1.3, BK, and TRPV4 proteins are all randomly inserted into the plasma membranes of excitable cells and that they form homogeneous clusters that increase in size until they reach a steady state. Further, it appears likely that cluster size for a diverse set of membrane-bound proteins and a wide range of cell types is regulated by a common feedback mechanism.
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- 2019
60. A Gs-coupled purinergic receptor boosts Ca2+ influx and vascular contractility during diabetic hyperglycemia.
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Prada, Maria Paz, Syed, Arsalan U, Buonarati, Olivia R, Reddy, Gopireddy R, Nystoriak, Matthew A, Ghosh, Debapriya, Simó, Sergi, Sato, Daisuke, Sasse, Kent C, Ward, Sean M, Santana, Luis F, Xiang, Yang K, Hell, Johannes W, Nieves-Cintrón, Madeline, and Navedo, Manuel F
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Blood Vessels ,Animals ,Mice ,Inbred C57BL ,Hyperglycemia ,Calcium ,Cyclic AMP-Dependent Protein Kinases ,Receptors ,G-Protein-Coupled ,Receptors ,Purinergic ,Calcium Signaling ,Muscle Contraction ,arterial tone ,biosensors ,cell biology ,extracellular nucleotides ,human ,ion channels ,molecular biophysics ,mouse ,structural biology ,Diabetes ,Metabolic and endocrine ,Biochemistry and Cell Biology - Abstract
Elevated glucose increases vascular reactivity by promoting L-type CaV1.2 channel (LTCC) activity by protein kinase A (PKA). Yet, how glucose activates PKA is unknown. We hypothesized that a Gs-coupled P2Y receptor is an upstream activator of PKA mediating LTCC potentiation during diabetic hyperglycemia. Experiments in apyrase-treated cells suggested involvement of a P2Y receptor underlying the glucose effects on LTTCs. Using human tissue, expression for P2Y11, the only Gs-coupled P2Y receptor, was detected in nanometer proximity to CaV1.2 and PKA. FRET-based experiments revealed that the selective P2Y11 agonist NF546 and elevated glucose stimulate cAMP production resulting in enhanced PKA-dependent LTCC activity. These changes were blocked by the selective P2Y11 inhibitor NF340. Comparable results were observed in mouse tissue, suggesting that a P2Y11-like receptor is mediating the glucose response in these cells. These findings established a key role for P2Y11 in regulating PKA-dependent LTCC function and vascular reactivity during diabetic hyperglycemia.
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- 2019
61. Size Matters: Ryanodine Receptor Cluster Size Heterogeneity Potentiates Calcium Waves
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Xie, Yuanfang, Yang, Yi, Galice, Samuel, Bers, Donald M, and Sato, Daisuke
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Biological Sciences ,Chemical Sciences ,Physical Sciences ,Heart Disease ,Cardiovascular ,Calcium Signaling ,Diastole ,Heart Ventricles ,Models ,Biological ,Myocytes ,Cardiac ,Probability ,Ryanodine Receptor Calcium Release Channel ,Biophysics ,Biological sciences ,Chemical sciences ,Physical sciences - Abstract
Ryanodine receptors (RyRs) mediate calcium (Ca)-induced Ca release and intracellular Ca homeostasis. In a cardiac myocyte, RyRs group into clusters of variable size from a few to several hundred RyRs, creating a spatially nonuniform intracellular distribution. It is unclear how heterogeneity of RyR cluster size alters spontaneous sarcoplasmic reticulum (SR) Ca releases (Ca sparks) and arrhythmogenic Ca waves. Here, we tested the impact of heterogeneous RyR cluster size on the initiation of Ca waves. Experimentally, we measured RyR cluster sizes at Ca spark sites in rat ventricular myocytes and further tested functional impacts using a physiologically detailed computational model with spatial and stochastic intracellular Ca dynamics. We found that the spark frequency and amplitude increase nonlinearly with the size of RyR clusters. Larger RyR clusters have lower SR Ca release threshold for local Ca spark initiation and exhibit steeper SR Ca release versus SR Ca load relationship. However, larger RyR clusters tend to lower SR Ca load because of the higher Ca leak rate. Conversely, smaller clusters have a higher threshold and a lower leak, which tends to increase SR Ca load. At the myocyte level, homogeneously large or small RyR clusters limit Ca waves (because of low load for large clusters but low excitability for small clusters). Mixtures of large and small RyR clusters potentiates Ca waves because the enhanced SR Ca load driven by smaller clusters enables Ca wave initiation and propagation from larger RyR clusters. Our study suggests that a spatially heterogeneous distribution of RyR cluster size under pathological conditions may potentiate Ca waves and thus afterdepolarizations and triggered arrhythmias.
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- 2019
62. Treatment for Appendicitis With Appendicolith by the Stone Size and Serum C-Reactive Protein Level
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Kubota, Akira, Yokoyama, Naoyuki, Sato, Daisuke, Hashidate, Hideki, Nojiri, Shuko, Taguchi, Chie, and Otani, Tetsuya
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- 2022
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63. Evaluation of Middle Cerebral Artery Symmetry: A Pilot Study for Clinical Application in Mechanical Thrombectomy
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Sato, Daisuke, Ogawa, Shotaro, Torazawa, Seiei, Dofuku, Shogo, Sato, Masayuki, and Ota, Takahiro
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- 2022
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64. Understanding of superorganisms: collective behavior, differentiation and social organization
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Miura, Toru, Oguchi, Kohei, Yamaguchi, Haruka, Nakamura, Mayuko, Sato, Daisuke, Kobayashi, Kenta, Kutsukake, Nobuyuki, Miura, Kyoko, Hayashi, Yoshinobu, Hojo, Masaru, Maekawa, Kiyoto, Shigenobu, Shuji, Kano, Takeshi, and Ishiguro, Akio
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- 2022
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65. Improvement of substrate recognition in branched-chain aminoacyl-tRNA synthetases from Escherichia coli under conditions of pyrophosphate amplification
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Nakatsuka-Mori, Tomoko, Sato, Daisuke, and Aoki, Hideyuki
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- 2022
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66. Prenatal exposure to di(n-butyl) phthalate delays the spermatogenic cycle in rats: Investigation using a BrdU-injection method
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Wakui, Shin, Sato, Daisuke, Okayama, Yuya, Kansaku, Norio, and Muto, Tomoko
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- 2022
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67. Metabolic changes induced by dapagliflozin, an SGLT2 inhibitor, in Japanese patients with type 2 diabetes treated by oral anti-diabetic agents: A randomized, clinical trial
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Horibe, Kayo, Morino, Katsutaro, Miyazawa, Itsuko, Tanaka-Mizuno, Sachiko, Kondo, Keiko, Sato, Daisuke, Ohashi, Natsuko, Ida, Shogo, Yanagimachi, Tsuyoshi, Yoshimura, Masahiro, Itoh, Ryuta, Murata, Kiyoshi, Miura, Katsuyuki, Arima, Hisatomi, Fujita, Yukihiro, Ugi, Satoshi, and Maegawa, Hiroshi
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- 2022
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68. Anomalous Quasiparticle Reflection from the Surface of a $^3$He-$^4$He Dilute Solution
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Ikegami, Hiroki, Kim, Kitak, Sato, Daisuke, Kono, Kimitoshi, Choi, Hyoungsoon, and Monarkha, Yuriy P.
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Condensed Matter - Other Condensed Matter - Abstract
A free surface of a dilute $^3$He-$^4$He liquid mixture is a unique system where two Fermi liquids with distinct dimensions coexist: a three-dimensional (3D) $^3$He Fermi liquid in bulk and a two-dimensional (2D) $^3$He Fermi liquid at the surface. To investigate a novel effect generated by the interaction between the two Fermi liquids, mobility of a Wigner crystal of electrons formed on the free surface of the mixture is studied. An anomalous enhancement of the mobility, compared with the case where the 3D and 2D systems do not interact with each other, is observed. The enhancement is explained by non-trivial reflection of 3D quasiparticles from the surface covered with the 2D $^3$He system.
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- 2017
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69. A Psychometric Evaluation of Preserving Cultural Heritage as a Form of Psychosocial Support.
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Kamiyama, Machiko, Sato, Masae, Ichijo, Reika, Sato, Daisuke, and Morris, John
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SOCIAL support ,CLINICAL psychologists ,EARTHQUAKES ,PSYCHOMETRICS ,CULTURAL property - Abstract
It is now widely recognized that the rescue of local historical materials following a disaster can be an effective tool for the recovery of individuals and communities. After the Great East Japan Earthquake of 2011, a local NPO rescued and restored historical heritage that had been owned by the victims. This study hypothesizes that such activities constitute psychosocial support as recommended by the WHO for survivors. Our informants were people owning damaged historical materials that had been rescued by the NPO. In view of the short-comings of conventional methodology in assessing the merits of psychosocial support, this study applies a psychometric evaluation of how the informants perceived their rescue by the NPO, using a semi-structured interview survey method with a quasi-experimental design. Of the 20 informants, 19 were over 65 years old. Interviews were conducted by clinical psychologists who were not involved in the NPO's activities so as to ensure an independent evaluation. The results revealed that those who experienced their rescue within three months after the disaster had positive images of the rescue and surrounding events, whereas informants whose rescue was delayed tended to have negative impressions, despite the objective fact that it was the former group who had all suffered greater damage from the disaster. Those informants who succeeded in changing their overwhelmingly negative experiences into positive images also showed a markedly higher rate of engagement with their communities, which can be interpreted as showing higher resilience. [ABSTRACT FROM AUTHOR]
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- 2024
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70. A U-turn wiring technique for reverse-angled branches adjacent to ectasia: a case series.
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Yamaguchi, Masashi, Tanaka, Yutaka, Sato, Daisuke, and Saito, Shigeru
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PERCUTANEOUS coronary intervention ,CORONARY disease ,MYOCARDIAL infarction - Abstract
Background The reverse-wiring technique (RWT) using a hairpin-bend wire is useful for percutaneous coronary intervention of a bifurcation lesion with an extremely angulated side branch (SB); however, it is not necessarily effective in some anatomical situations. We report a novel SB wiring technique, the U-turn wiring technique (UWT), that is useful for wiring an extremely angled SB proximal to the ectasia. Case summary In the first case, the bare wire took a U-turn in the ectasia of the diagonal branch and crossed towards the angled left anterior descending artery, but a coronary dissection occurred in the diagonal branch due to the continuous wire-pushing force. Therefore, in the second case, we used a microcatheter with distal flexibility to prevent guidewire-induced vessel injury at the ectasia site and safely advanced the wire to the distal portion of the extremely angulated SB. Discussion The UWT takes advantage of the ectasia as a space to U-turn the guidewire. The UWT does not require a hairpin-bend guidewire or a dual-lumen catheter. The guidewire can be easily pushed forward through a reversed SB. After successful wire insertion, the guidewire can be easily advanced deep into the side branch. The UWT facilitates wire crossing to a reverse-angled branch utilizing the coronary ectasia anatomy through a simple manipulation. [ABSTRACT FROM AUTHOR]
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- 2024
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71. Japan—National Insurance Claims Database (NDB)
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Sato, Daisuke, Ohe, Kazuhiko, Ahrens, Wolfgang, Series Editor, Pigeot, Iris, Series Editor, Sturkenboom, Miriam, editor, and Schink, Tania, editor
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- 2021
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72. Supplier-Customer Network of Kyoto’s Traditional Craft Industry
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Sato, Daisuke, Ikeda, Yuichi, Ikeda, Yuichi, editor, Iyetomi, Hiroshi, editor, and Mizuno, Takayuki, editor
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- 2021
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73. Physically-based structural modeling of a typical regenerative tissue analog bridges material macroscale continuum and cellular microscale discreteness and elucidates the hierarchical characteristics of cell-matrix interaction
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Feng, Zhonggang, Fujita, Kyohei, Yano, Mizuna, Kosawada, Tadashi, Sato, Daisuke, Nakamura, Takao, and Umezu, Mitsuo
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- 2022
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74. Comparison of general satisfaction, oral health-related quality of life, and patient's self-assessment between mandibular single-implant overdentures and experimental removable complete dentures: A randomized crossover clinical trial
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Uehara, Yoko, Kanazawa, Manabu, Miyayasu, Anna, Watanabe, Masataka, Katheng, Awutsadaporn, Sato, Daisuke, and Minakuchi, Shunsuke
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- 2022
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75. Characterization of the discriminative stimulus effect of quinpirole: Further evidence for functional interaction between central dopamine D1/D2-receptors
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Mori, Tomohisa, Yamashita, Kensuke, Takahashi, Ko, Mano, Shinsei, Sato, Daisuke, and Narita, Minoru
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- 2022
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76. Patient-reported outcomes for the immediate loading of mandibular overdentures supported by two implants soon after implant surgery
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Komagamine, Yuriko, Kanazawa, Manabu, Sato, Daisuke, Iwaki, Maiko, Miyayasu, A., and Minakuchi, Shunsuke
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- 2022
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77. Patient-reported outcomes with immediate-loaded two-implant-supported mandibular overdentures: Results of a 5-year prospective study
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Komagamine, Yuriko, Kanazawa, Manabu, Sato, Daisuke, Iwaki, Maiko, Miyayasu, Anna, and Minakuchi, Shunsuke
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- 2022
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78. Effects of dapagliflozin on peripheral sympathetic nerve activity in standard chow- and high-fat-fed rats after a glucose load
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Sato, Daisuke, Nakamura, Takao, Amarume, Jota, Yano, Mizuna, Nishina, Atsuyoshi, Feng, Zhonggang, and Kusunoki, Masataka
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- 2022
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79. A Shape Optimisation with the Isogeometric Boundary Element Method and Adjoint Variable Method for the Three-Dimensional Helmholtz Equation
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Takahashi, Toru, Sato, Daisuke, Isakari, Hiroshi, and Matsumoto, Toshiro
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- 2022
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80. Is radiological psoas muscle area measurement a predictor of postoperative complications after rectal resection for rectal cancer? A retrospective study
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Uehara, Hiroaki, Yamazaki, Toshiyuki, Iwaya, Akira, Kameyama, Hitoshi, Utsumi, Shiori, Harada, Rina, Komatsu, Masaru, Hirai, Motoharu, Kubota, Akira, Katada, Tomohiro, Kobayashi, Kazuaki, Sato, Daisuke, Yokoyama, Naoyuki, Kuwabara, Shirou, and Otani, Tetsuya
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- 2022
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81. Comparison of surgical smoke between open surgery and laparoscopic surgery for colorectal disease in the COVID-19 era
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Kameyama, Hitoshi, Otani, Tetsuya, Yamazaki, Toshiyuki, Iwaya, Akira, Uehara, Hiroaki, Harada, Rina, Hirai, Motoharu, Komatsu, Masaru, Kubota, Akira, Katada, Tomohiro, Kobayashi, Kazuaki, Sato, Daisuke, Yokoyama, Naoyuki, Kuwabara, Shirou, Tanaka, Yuki, and Sawakami, Kimihiko
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- 2022
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82. Size Matters: Ryanodine Receptor Cluster Size Affects Arrhythmogenic Sarcoplasmic Reticulum Calcium Release
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Galice, Samuel, Xie, Yuanfang, Yang, Yi, Sato, Daisuke, and Bers, Donald M
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Medical Physiology ,Biomedical and Clinical Sciences ,Cardiovascular ,Action Potentials ,Animals ,Arrhythmias ,Cardiac ,Calcium Signaling ,Computer Simulation ,Excitation Contraction Coupling ,Heart Rate ,Humans ,Ion Channel Gating ,Models ,Cardiovascular ,Myocytes ,Cardiac ,Rats ,Sprague-Dawley ,Ryanodine Receptor Calcium Release Channel ,Sarcoplasmic Reticulum ,Tacrolimus Binding Proteins ,calcium regulation ,calcium signaling ,calcium sparks ,ryanodine receptor ,Cardiorespiratory Medicine and Haematology ,Cardiovascular medicine and haematology - Abstract
BackgroundRyanodine receptors (RyR) mediate sarcoplasmic reticulum calcium (Ca2+) release and influence myocyte Ca2+ homeostasis and arrhythmias. In cardiac myocytes, RyRs are found in clusters of various sizes and shapes, and RyR cluster size may critically influence normal and arrhythmogenic Ca2+ spark and wave formation. However, the actual RyR cluster sizes at specific Ca2+ spark sites have never been measured in the physiological setting.Methods and resultsHere we measured RyR cluster size and Ca2+ sparks simultaneously to assess how RyR cluster size influences Ca2+ sparks and sarcoplasmic reticulum Ca2+ leak. For small RyR cluster sizes (
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- 2018
83. A model for cooperative gating of L-type Ca2+ channels and its effects on cardiac alternans dynamics.
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Sato, Daisuke, Dixon, Rose E, Santana, Luis F, and Navedo, Manuel F
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Sarcoplasmic Reticulum ,Myocardium ,Myocytes ,Cardiac ,Animals ,Rabbits ,Calcium ,Calcium Channels ,L-Type ,Markov Chains ,Normal Distribution ,Stochastic Processes ,Computational Biology ,Calcium Signaling ,Action Potentials ,Heart Rate ,Myocardial Contraction ,Models ,Biological ,Computer Simulation ,Programming Languages ,Arrhythmias ,Cardiac ,Excitation Contraction Coupling ,Arrhythmias ,Cardiac ,Calcium Channels ,L-Type ,Models ,Biological ,Myocytes ,Mathematical Sciences ,Biological Sciences ,Information and Computing Sciences ,Bioinformatics - Abstract
In ventricular myocytes, membrane depolarization during the action potential (AP) causes synchronous activation of multiple L-type CaV1.2 channels (LTCCs), which trigger the release of calcium (Ca2+) from the sarcoplasmic reticulum (SR). This results in an increase in intracellular Ca2+ (Cai) that initiates contraction. During pulsus alternans, cardiac contraction is unstable, going from weak to strong in successive beats despite a constant heart rate. These cardiac alternans can be caused by the instability of membrane potential (Vm) due to steep AP duration (APD) restitution (Vm-driven alternans), instability of Cai cycling (Ca2+-driven alternans), or both, and may be modulated by functional coupling between clustered CaV1.2 (e.g. cooperative gating). Here, mathematical analysis and computational models were used to determine how changes in the strength of cooperative gating between LTCCs may impact membrane voltage and intracellular Ca2+ dynamics in the heart. We found that increasing the degree of coupling between LTCCs increases the amplitude of Ca2+ currents (ICaL) and prolongs AP duration (APD). Increased AP duration is known to promote cardiac alternans, a potentially arrhythmogenic substrate. In addition, our analysis shows that increasing the strength of cooperative activation of LTCCs makes the coupling of Ca2+ on the membrane voltage (Cai→Vm coupling) more positive and destabilizes the Vm-Cai dynamics for Vm-driven alternans and Cai-driven alternans, but not for quasiperiodic oscillation. These results suggest that cooperative gating of LTCCs may have a major impact on cardiac excitation-contraction coupling, not only by prolonging APD, but also by altering Cai→Vm coupling and potentially promoting cardiac arrhythmias.
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- 2018
84. Tumor suppression and improvement in immune systems by specific activation of dopamine D1-receptor-expressing neurons in the nucleus accumbens
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Sato, Daisuke, Hamada, Yusuke, Narita, Michiko, Mori, Tomohisa, Tezuka, Hiroyuki, Suda, Yukari, Tanaka, Kenichi, Yoshida, Sara, Tamura, Hideki, Yamanaka, Akihiro, Senba, Emiko, Kuzumaki, Naoko, and Narita, Minoru
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- 2022
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85. A neuroendocrine tumor within an anterior mediastinal mature teratoma: a case report
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Sato, Daisuke, Izu, Asami, Sakakibara, Masashi, Hayashi, Sohei, Kawachi, Riken, Shimamura, Mie, Masuda, Shinobu, and Sakurai, Hiroyuki
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- 2022
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86. Relief of neuropathic pain by cell-specific manipulation of nucleus accumbens dopamine D1- and D2-receptor-expressing neurons
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Sato, Daisuke, Narita, Michiko, Hamada, Yusuke, Mori, Tomohisa, Tanaka, Kenichi, Tamura, Hideki, Yamanaka, Akihiro, Matsui, Ryosuke, Watanabe, Dai, Suda, Yukari, Senba, Emiko, Watanabe, Moe, Navratilova, Edita, Porreca, Frank, Kuzumaki, Naoko, and Narita, Minoru
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- 2022
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87. No effect of whole-hand water flow stimulation on skill acquisition and retention during sensorimotor adaptation
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Le Cong, Dat, primary, Sato, Daisuke, additional, Ikarashi, Koyuki, additional, Ochi, Genta, additional, Fujimoto, Tomomi, additional, and Yamashiro, Koya, additional
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- 2024
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88. Intrasellar chordoma masquerading as a pituitary neuroendocrine tumor: Illustrative case
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Sato, Daisuke, primary, Hasegawa, Hirotaka, additional, Kimura, Soichiro, additional, Sato, Junichiro, additional, Shinya, Yuki, additional, Umekawa, Motoyuki, additional, Yasunaga, Yoichi, additional, Makita, Noriko, additional, and Saito, Nobuhito, additional
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- 2024
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89. Exercising with virtual reality is potentially better for the working memory and positive mood than cycling alone
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Ochi, Genta, primary, Ohno, Ken, additional, Kuwamizu, Ryuta, additional, Yamashiro, Koya, additional, Fujimoto, Tomomi, additional, Ikarashi, Koyuki, additional, Kodama, Naoki, additional, Onishi, Hideaki, additional, and Sato, Daisuke, additional
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- 2024
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90. Front cover
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Sato, Daisuke S., primary, Nakamura, Mayuko, additional, Teresa Aguado, María, additional, and Miura, Toru, additional
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- 2024
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91. Jump height ingenerated by countermovement and arm swing better correlates with proagility shuttle run tests but not with change of direction deficits in collegiate female athletes
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YAMASHITA, Naoyuki, primary, SATO, Daisuke, additional, and MISHIMA, Takaaki, additional
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- 2024
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92. Effect of Exercise Duration on Post-Exercise Persistence of Oxyhemoglobin Changes in the Premotor Cortex: A Near-Infrared Spectroscopy Study in Moderate-Intensity Cycling Exercise
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Tsubaki, Atsuhiro, Morishita, Shinichiro, Tokunaga, Yuta, Sato, Daisuke, Qin, Weixiang, Kojima, Sho, Onishi, Hideaki, Crusio, Wim E., Series Editor, Dong, Haidong, Series Editor, Lambris, John D., Series Editor, Radeke, Heinfried H., Series Editor, Rezaei, Nima, Series Editor, Ryu, Pan-Dong, editor, LaManna, Joseph C., editor, Harrison, David K., editor, and Lee, Sang-Suk, editor
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- 2020
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93. Versatile anomaly detection method for medical images with semi-supervised flow-based generative models
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Shibata, Hisaichi, Hanaoka, Shouhei, Nomura, Yukihiro, Nakao, Takahiro, Sato, Issei, Sato, Daisuke, Hayashi, Naoto, and Abe, Osamu
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- 2021
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94. Dynamical chiral symmetry breaking and weak nonperturbative renormalization group equation in gauge theory
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Aoki, Ken-Ichi, Kumamoto, Shin-Ichiro, and Sato, Daisuke
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Physics - General Physics - Abstract
We analyze the dynamical chiral symmetry breaking in gauge theory with the nonperturbative renormalization group equation (NPRGE), which is a first order nonlinear partial differential equation (PDE). In case that the spontaneous chiral symmetry breaking occurs, the NPRGE encounters some non-analytic singularities at the finite critical scale even though the initial function is continuous and smooth. Therefore there is no usual solution of the PDE beyond the critical scale. In this paper, we newly introduce the notion of a weak solution which is the global solution of the weak NPRGE. We show how to evaluate the physical quantities with the weak solution., Comment: 6 pages, 2 figures, contribution to Sakata Memorial KMI Workshop on "Origin of Mass and Strong Coupling Gauge Theories"(SCGT15), 3-6 Mar. 2015, Nagoya University
- Published
- 2016
95. Impact of COVID-19 Pandemic on Cardiovascular Testing in Asia: The IAEA INCAPS-COVID Study
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Einstein, Andrew J., Paez, Diana, Dondi, Maurizio, Better, Nathan, Cerci, Rodrigo, Dorbala, Sharmila, Pascual, Thomas N.B., Raggi, Paolo, Shaw, Leslee J., Villines, Todd C., Vitola, Joao V., Williams, Michelle C., Pynda, Yaroslav, Hinterleitner, Gerd, Lu, Yao, Morozova, Olga, Xu, Zhuoran, Hirschfeld, Cole B., Cohen, Yosef, Goebel, Benjamin, Malkovskiy, Eli, Randazzo, Michael, Choi, Andrew, Lopez-Mattei, Juan, Parwani, Purvi, Nasery, Mohammad Nawaz, Goda, Artan, Shirka, Ervina, Benlabgaa, Rabie, Bouyoucef, Salah, Medjahedi, Abdelkader, Nailli, Qais, Agolti, Mariela, Aguero, Roberto Nicolas, Alak, Maria del Carmen, Alberguina, Lucia Graciela, Arroñada, Guillermo, Astesiano, Andrea, Astesiano, Alfredo, Norton, Carolina Bas, Benteo, Pablo, Blanco, Juan, Bonelli, Juan Manuel, Bustos, Jose Javier, Cabrejas, Raul, Cachero, Jorge, Campisi, Roxana, Canderoli, Alejandro, Carames, Silvia, Carrascosa, Patrícia, Castro, Ricardo, Cendoya, Oscar, Cognigni, Luciano Martin, Collaud, Carlos, Cortes, Claudia, Courtis, Javier, Cragnolino, Daniel, Daicz, Mariana, De La Vega, Alejandro, De Maria, Silvia Teresa, Del Riego, Horacio, Dettori, Fernando, Deviggiano, Alejandro, Dragonetti, Laura, Embon, Mario, Enriquez, Ruben Emilio, Ensinas, Jorge, Faccio, Fernando, Facello, Adolfo, Garofalo, Diego, Geronazzo, Ricardo, Gonza, Natalia, Gutierrez, Lucas, Guzzo, Miguel Angel, Hasbani, Victor, Huerin, Melina, Jäger, Victor, Lewkowicz, Julio Manuel, López De Munaín, Maria Nieves A., Lotti, Jose Maria, Marquez, Alejandra, Masoli, Osvaldo, Masoli, Osvaldo Horacio, Mastrovito, Edgardo, Mayoraz, Matias, Melado, Graciela Eva, Mele, Anibal, Merani, Maria Fernanda, Meretta, Alejandro Horacio, Molteni, Susana, Montecinos, Marcos, Noguera, Eduardo, Novoa, Carlos, Sueldo, Claudio Pereyra, Ascani, Sebastian Perez, Pollono, Pablo, Pujol, Maria Paula, Radzinschi, Alejandro, Raimondi, Gustavo, Redruello, Marcela, Rodríguez, Marina, Rodríguez, Matías, Romero, Romina Lorena, Acuña, Arturo Romero, Rovaletti, Federico, San Miguel, Lucas, Solari, Lucrecia, Strada, Bruno, Traverso, Sonia, Traverzo, Sonia Simona, Espeche, Maria del Huerto Velazquez, Weihmuller, Juan Sebastian, Wolcan, Juan, Zeffiro, Susana, Sakanyan, Mari, Beuzeville, Scott, Boktor, Raef, Butler, Patrick, Calcott, Jennifer, Carr, Loretta, Chan, Virgil, Chao, Charles, Chong, Woon, Dobson, Mark, Downie, D'Arne, Dwivedi, Girish, Elison, Barry, Engela, Jean, Francis, Roslyn, Gaikwad, Anand, Basavaraj, Ashok Gangasandra, Goodwin, Bruce, Greenough, Robert, Hamilton-Craig, Christian, Hsieh, Victar, Joshi, Subodh, Lederer, Karin, Lee, Kenneth, Lee, Joseph, Magnussen, John, Mai, Nghi, Mander, Gordon, Murton, Fiona, Nandurkar, Dee, Neill, Johanne, O'Rourke, Edward, O'Sullivan, Patricia, Pandos, George, Pathmaraj, Kunthi, Pitman, Alexander, Poulter, Rohan, Premaratne, Manuja, Prior, David, Ridley, Lloyd, Rutherford, Natalie, Salehi, Hamid, Saunders, Connor, Scarlett, Luke, Seneviratne, Sujith, Shetty, Deepa, Shrestha, Ganesh, Shulman, 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Lorenzo, Andrea, De Macedo Filho, Robson, Erthal, Fernanda, Fernandes, Fabio, Fernandes, Juliano, De Souza, Thiago Ferreira, Alves, Wilson Furlan, Ghini, Bruno, Goncalves, Luiz, Gottlieb, Ilan, Hadlich, Marcelo, Kameoka, Vinícius, Lima, Ronaldo, Lima, Adna, Lopes, Rafael Willain, Machado e Silva, Ricardo, Magalhães, Tiago, Silva, Fábio Martins, Mastrocola, Luiz Eduardo, Medeiros, Fábio, Meneghetti, José Claudio, Naue, Vania, Naves, Danilo, Nolasco, Roberto, Nomura, Cesar, Oliveira, Joao Bruno, Paixao, Eduardo, De Carvalho, Filipe Penna, Pinto, Ibraim, Possetti, Priscila, Quinta, Mayra, Nogueira Ramos, Rodrigo Rizzo, Rocha, Ricardo, Rodrigues, Alfredo, Rodrigues, Carlos, Romantini, Leila, Sanches, Adelina, Santana, Sara, Sara da Silva, Leonardo, Schvartzman, Paulo, Matushita, Cristina Sebastião, Senra, Tiago, Shiozaki, Afonso, Menezes de Siqueira, Maria Eduarda, Siqueira, Cristiano, Smanio, Paola, Soares, Carlos Eduardo, Junior, José Soares, Bittencourt, Marcio Sommer, Spiro, Bernardo, 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Sakata, Sakata Yasushi, Sarai, Masayoshi, Sato, Daisuke, Shiraishi, Shinya, Suwa, Yoshinobu, Takanami, Kentaro, Takehana, Kazuya, Taki, Junichi, Tamaki, Nagara, Taniguchi, Yasuyo, Teragawa, Hiroki, Tomizawa, Nobuo, Tsujita, Kenichi, Umeji, Kyoko, Wakabayashi, Yasushi, Yamada, Shinichiro, Yamazaki, Shinya, Yoneyama, Tatsuya, Rawashdeh, Mohammad, Batyrkhanov, Daultai, Dautov, Tairkhan, Makhdomi, Khalid, Ombati, Kevin, Alkandari, Faridah, Garashi, Masoud, Coie, Tchoyoson Lim, Rajvong, Sonexay, Kalinin, Artem, Kalnina, Marika, Haidar, Mohamad, Komiagiene, Renata, Kviecinskiene, Giedre, Mataciunas, Mindaugas, Vajauskas, Donatas, Picard, Christian, Karim, Noor Khairiah A., Reichmuth, Luise, Samuel, Anthony, Allarakha, Mohammad Aaftaab, Naojee, Ambedhkar Shantaram, Alexanderson-Rosas, Erick, Barragan, Erika, González-Montecinos, Alejandro Becerril, Cabada, Manuel, Rodriguez, Daniel Calderon, Carvajal-Juarez, Isabel, Cortés, Violeta, Cortés, Filiberto, De La Peña, Erasmo, Gama-Moreno, Manlio, 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Hamirani, Yasmin, Hassen, Karen, Hatfield, Mallory, Hawkins, Carolyn, Hawthorne, Katie, Heath, Nicholas, Hendel, Robert, Hernandez, Phillip, Hill, Gregory, Horgan, Stephen, Huffman, Jeff, Hurwitz, Lynne, Iskandrian, Ami, Janardhanan, Rajesh, Jellis, Christine, Jerome, Scott, Kalra, Dinesh, Kaviratne, Summanther, Kay, Fernando, Kelly, Faith, Khalique, Omar, Kinkhabwala, Mona, Iii, George Kinzfogl, Kircher, Jacqueline, Kirkbride, Rachael, Kontos, Michael, Kottam, Anupama, Krepp, Joseph, Layer, Jay, Lee, Steven H., Leppo, Jeffrey, Lesser, John, Leung, Steve, Lewin, Howard, Litmanovich, Diana, Liu, Yiyan, Magurany, Kathleen, Markowitz, Jeremy, Marn, Amanda, Matis, Stephen E., Mckenna, Michael, Mcrae, Tony, Mendoza, Fernando, Merhige, Michael, Min, David, Moffitt, Chanan, Moncher, Karen, Moore, Warren, Morayati, Shamil, Morris, Michael, Mossa-Basha, Mahmud, Mrsic, Zorana, Murthy, Venkatesh, Nagpal, Prashant, Napier, Kyle, Nelson, Katarina, Nijjar, Prabhjot, Osman, Medhat, Passen, Edward, 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Joseph, Shah, Samir, Shah, Nishant, Shanbhag, Sujata, Sharma, Gaurav, Shayani, Steven, Shirani, Jamshid, Shivaram, Pushpa, Sigman, Steven, Simon, Mitch, Slim, Ahmad, Smith, David, Smith, Alexandra, Soman, Prem, Sood, Aditya, Srichai-Parsia, Monvadi Barbara, Streeter, James, T, Albert, Tawakol, Ahmed, Thomas, Dustin, Thompson, Randall, Torbet, Tara, Trinidad, Desiree, Ullery, Shawn, Unzek, Samuel, Uretsky, Seth, Vallurupalli, Srikanth, Verma, Vikas, Waller, Alfonso, Wang, Ellen, Ward, Parker, Weissman, Gaby, Wesbey, George, White, Kelly, Winchester, David, Wolinsky, David, Yost, Sandra, Zgaljardic, Michael, Alonso, Omar, Beretta, Mario, Ferrando, Rodolfo, Kapitan, Miguel, Mut, Fernando, Djuraev, Omoa, Rozikhodjaeva, Gulnora, Le Ngoc, Ha, Mai, Son Hong, Nguyen, Xuan Canh, Lahey, Ryan, Henry Bom, Hee-Seung, Fazel, Reza, Karthikeyan, Ganesan, Keng, Felix Y.J., Rubinshtein, Ronen, Cerci, Rodrigo Julio, Vitola, João V., Choi, Andrew D., and Cohen, Yosef A.
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Einstein, Andrew J., Paez, Diana, Dondi, Maurizio, Better, Nathan, Cerci, Rodrigo, Dorbala, Sharmila, Pascual, Thomas N.B., Raggi, Paolo, Shaw, Leslee J., Villines, Todd C., Vitola, Joao V., Williams, Michelle C., Pynda, Yaroslav, Hinterleitner, Gerd, Lu, Yao, Morozova, Olga, Xu, Zhuoran, Hirschfeld, Cole B., Cohen, Yosef, Goebel, Benjamin, Malkovskiy, Eli, Randazzo, Michael, Choi, Andrew, Lopez-Mattei, Juan, Parwani, Purvi, Nasery, Mohammad Nawaz, Goda, Artan, Shirka, Ervina, Benlabgaa, Rabie, Bouyoucef, Salah, Medjahedi, Abdelkader, Nailli, Qais, Agolti, Mariela, Aguero, Roberto Nicolas, Alak, Maria del Carmen, Alberguina, Lucia Graciela, Arroñada, Guillermo, Astesiano, Andrea, Astesiano, Alfredo, Norton, Carolina Bas, Benteo, Pablo, Blanco, Juan, Bonelli, Juan Manuel, Bustos, Jose Javier, Cabrejas, Raul, Cachero, Jorge, Campisi, Roxana, Canderoli, Alejandro, Carames, Silvia, Carrascosa, Patrícia, Castro, Ricardo, Cendoya, Oscar, Cognigni, Luciano Martin, Collaud, Carlos, Cortes, Claudia, Courtis, Javier, Cragnolino, Daniel, Daicz, Mariana, De La Vega, Alejandro, De Maria, Silvia Teresa, Del Riego, Horacio, Dettori, Fernando, Deviggiano, Alejandro, Dragonetti, Laura, Embon, Mario, Enriquez, Ruben Emilio, Ensinas, Jorge, Faccio, Fernando, Facello, Adolfo, Garofalo, Diego, Geronazzo, Ricardo, Gonza, Natalia, Gutierrez, Lucas, Guzzo, Miguel Angel, Hasbani, Victor, Huerin, Melina, Jäger, Victor, Lewkowicz, Julio Manuel, Nieves A López De Munaín, Maria, Lotti, Jose Maria, Marquez, Alejandra, Masoli, Osvaldo, Masoli, Osvaldo Horacio, Mastrovito, Edgardo, Mayoraz, Matias, Melado, Graciela Eva, Mele, Anibal, Merani, Maria Fernanda, Meretta, Alejandro Horacio, Molteni, Susana, Montecinos, Marcos, Noguera, Eduardo, Novoa, Carlos, Sueldo, Claudio Pereyra, Ascani, Sebastian Perez, Pollono, Pablo, Pujol, Maria Paula, Radzinschi, Alejandro, Raimondi, Gustavo, Redruello, Marcela, Rodríguez, Marina, Rodríguez, Matías, Romero, Romina Lorena, Acuña, Arturo Romero, Rovaletti, 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Rajesh, Carpenter, John-Paul, Coles, Duncan, Cusack, David, Deshpande, Aparna, Dougan, John, Fairbairn, Timothy, Farrugia, Alexia, Gopalan, Deepa, Gummow, Alistair, Ramkumar, Prasad Guntur, Hamilton, Mark, Harbinson, Mark, Hartley, Thomas, Hudson, Benjamin, Joshi, Nikhil, Kay, Michael, Kelion, Andrew, Khokhar, Azhar, Kitt, Jamie, Lee, Ken, Low, Chen, Mak, Sze Mun, Marousa, Ntouskou, Martin, Jon, Mcalindon, Elisa, Menezes, Leon, Morgan-Hughes, Gareth, Moss, Alastair, Murray, Anthony, Nicol, Edward, Patel, Dilip, Peebles, Charles, Pugliese, Francesca, Luis Rodrigues, Jonathan Carl, Rofe, Christopher, Sabharwal, Nikant, Schofield, Rebecca, Semple, Thomas, Sharma, Naveen, Strouhal, Peter, Subedi, Deepak, Topping, William, Tweed, Katharine, Weir-Mccall, Jonathan, Abbara, Suhny, Abbasi, Taimur, Abbott, Brian, Abohashem, Shady, Abramson, Sandra, Al-Abboud, Tarek, Al-Mallah, Mouaz, Almousalli, Omar, Ananthasubramaniam, Karthikeyan, Kumar, Mohan Ashok, Askew, Jeffrey, Attanasio, Lea, Balmer-Swain, Mallory, Bayer, Richard R., Bernheim, Adam, Bhatti, Sabha, Bieging, Erik, Blankstein, Ron, Bloom, Stephen, Blue, Sean, Bluemke, David, Borges, Andressa, Branch, Kelley, Bravo, Paco, Brothers, Jessica, Budoff, Matthew, Bullock-Palmer, Renée, Burandt, Angela, Burke, Floyd W., Bush, Kelvin, Candela, Candace, Capasso, Elizabeth, Cavalcante, Joao, Chang, Donald, Chatterjee, Saurav, Chatzizisis, Yiannis, Cheezum, Michael, Chen, Tiffany, Chen, Jennifer, Chen, Marcus, Clarcq, James, Cordero, Ayreen, Crim, Matthew, Danciu, Sorin, Decter, Bruce, Dhruva, Nimish, Doherty, Neil, Doukky, Rami, Dunbar, Anjori, Duvall, William, Edwards, Rachael, Esquitin, Kerry, Farah, Husam, Fentanes, Emilio, Ferencik, Maros, Fisher, Daniel, Fitzpatrick, Daniel, Foster, Cameron, Fuisz, Tony, Gannon, Michael, Gastner, Lori, Gerson, Myron, Ghoshhajra, Brian, Goldberg, Alan, Goldner, Brian, Gonzalez, Jorge, Gore, Rosco, Gracia-López, Sandra, Hage, Fadi, Haider, Agha, Haider, Sofia, Hamirani, Yasmin, Hassen, Karen, Hatfield, Mallory, Hawkins, Carolyn, Hawthorne, Katie, Heath, Nicholas, Hendel, Robert, Hernandez, Phillip, Hill, Gregory, Horgan, Stephen, Huffman, Jeff, Hurwitz, Lynne, Iskandrian, Ami, Janardhanan, Rajesh, Jellis, Christine, Jerome, Scott, Kalra, Dinesh, Kaviratne, Summanther, Kay, Fernando, Kelly, Faith, Khalique, Omar, Kinkhabwala, Mona, Iii, George Kinzfogl, Kircher, Jacqueline, Kirkbride, Rachael, Kontos, Michael, Kottam, Anupama, Krepp, Joseph, Layer, Jay, Lee, Steven H., Leppo, Jeffrey, Lesser, John, Leung, Steve, Lewin, Howard, Litmanovich, Diana, Liu, Yiyan, Magurany, Kathleen, Markowitz, Jeremy, Marn, Amanda, Matis, Stephen E., Mckenna, Michael, Mcrae, Tony, Mendoza, Fernando, Merhige, Michael, Min, David, Moffitt, Chanan, Moncher, Karen, Moore, Warren, Morayati, Shamil, Morris, Michael, Mossa-Basha, Mahmud, Mrsic, Zorana, Murthy, Venkatesh, Nagpal, Prashant, Napier, Kyle, Narula, Jagat, Nelson, Katarina, Nijjar, Prabhjot, Osman, Medhat, Passen, Edward, Patel, Amit, Patil, Pravin, Paul, Ryan, Phillips, Lawrence, Polsani, Venkateshwar, Poludasu, Rajaram, Pomerantz, Brian, Porter, Thomas, Prentice, Ryan, Pursnani, Amit, Rabbat, Mark, Ramamurti, Suresh, Rich, Florence, Luna, Hiram Rivera, Robinson, Austin, Robles, Kim, Rodríguez, Cesar, Rorie, Mark, Rumberger, John, Russell, Raymond, Sabra, Philip, Sadler, Diego, Schemmer, Mary, Schoepf, U. Joseph, Shah, Samir, Shah, Nishant, Shanbhag, Sujata, Sharma, Gaurav, Shayani, Steven, Shirani, Jamshid, Shivaram, Pushpa, Sigman, Steven, Simon, Mitch, Slim, Ahmad, Smith, David, Smith, Alexandra, Soman, Prem, Sood, Aditya, Srichai-Parsia, Monvadi Barbara, Streeter, James, T, Albert, Tawakol, Ahmed, Thomas, Dustin, Thompson, Randall, Torbet, Tara, Trinidad, Desiree, Ullery, Shawn, Unzek, Samuel, Uretsky, Seth, Vallurupalli, Srikanth, Verma, Vikas, Waller, Alfonso, Wang, Ellen, Ward, Parker, Weissman, Gaby, Wesbey, George, White, Kelly, Winchester, David, Wolinsky, David, Yost, Sandra, Zgaljardic, Michael, Alonso, Omar, Beretta, Mario, Ferrando, Rodolfo, Kapitan, Miguel, Mut, Fernando, Djuraev, Omoa, Rozikhodjaeva, Gulnora, Le Ngoc, Ha, Mai, Son Hong, Nguyen, Xuan Canh, Lahey, Ryan, Choi, Andrew D., Shah, Nishant R., Bluemke, David A., Berman, Daniel S., Randazzo, Michael J., Cerci, Rodrigo J., Sinitsyn, Valentin, Nørgaard, Bjarne Linde, and Cohen, Yosef A.
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- 2021
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97. A Real-World Comparison of 1-Year Survival and Expenditures for Transcatheter Aortic Valve Replacements: SAPIEN 3 Versus CoreValve Versus Evolut R
- Author
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Fukuda, Haruhisa, Kiyohara, Kosuke, Sato, Daisuke, Kitamura, Tetsuhisa, and Kodera, Satoshi
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- 2021
- Full Text
- View/download PDF
98. Calcium-Dependent Arrhythmogenic Foci Created by Weakly Coupled Myocytes in the Failing Heart
- Author
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Lang, Di, Sato, Daisuke, Jiang, Yanyan, Ginsburg, Kenneth S, Ripplinger, Crystal M, and Bers, Donald M
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Medical Physiology ,Biomedical and Clinical Sciences ,Heart Disease ,Cardiovascular ,Action Potentials ,Animals ,Calcium Signaling ,Cells ,Cultured ,Excitation Contraction Coupling ,Gap Junctions ,Heart Failure ,Male ,Mice ,Mice ,Inbred C57BL ,Myocytes ,Cardiac ,action potentials ,arrhythmia ,calcium ,carbenoxolone ,heart failure ,rotigaptide ,Cardiorespiratory Medicine and Haematology ,Clinical Sciences ,Cardiovascular System & Hematology ,Cardiovascular medicine and haematology ,Clinical sciences - Abstract
RationaleIntercellular uncoupling and Ca2+ (Ca) mishandling can initiate triggered ventricular arrhythmias. Spontaneous Ca release activates inward current which depolarizes membrane potential (Vm) and can trigger action potentials in isolated myocytes. However, cell-cell coupling in intact hearts limits local depolarization and may protect hearts from this arrhythmogenic mechanism. Traditional optical mapping lacks the spatial resolution to assess coupling of individual myocytes.ObjectiveWe investigate local intercellular coupling in Ca-induced depolarization in intact hearts, using confocal microscopy to measure local Vm and intracellular [Ca] simultaneously.Methods and resultsWe used isolated Langendorff-perfused hearts from control (CTL) and heart failure (HF) mice (HF induced by transaortic constriction). In CTL hearts, 1.4% of myocytes were poorly synchronized with neighboring cells and exhibited asynchronous (AS) Ca transients. These AS myocytes were much more frequent in HF (10.8% of myocytes, P
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- 2017
99. Dynamics of sodium current mediated early afterdepolarizations.
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Sato, Daisuke, Clancy, Colleen E, and Bers, Donald M
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Applied mathematics ,Biophysics ,Cardiology ,Cell biology ,Medicine ,Physiology ,Systems biology - Abstract
Early afterdepolarizations (EADs) have been attributed to two primary mechanisms: 1) recovery from inactivation of the L-type calcium (Ca) channel and/or 2) spontaneous Ca release, which depolarizes the membrane potential through the electrogenic sodium-calcium exchanger (NCX). The sodium (Na) current (INa), especially the late component of the Na current, has been recognized as an important player to set up the conditions for EADs by reducing repolarization reserve and increasing intracellular Na concentration, which leads to Ca overload. However, INa itself has not been considered as a direct initiator of EADs. A recent experimental study by Horvath et al. has shown that the amplitude of the late component of the Na current is as large as potassium (K) and Ca currents (∼1 pA/pF). This result suggests that INa by itself can exceeds the sum of outward currents and depolarize the membrane potential. In this study, we show that INa can also directly initiate EADs. Mathematical analysis reveals a fundamental dynamical origin of EADs arising directly from the Na channel reactivation. This system has three fixed points. The dynamics of the INa mediated EAD oscillation is different from that of the membrane voltage oscillation of the pacemaker cell, which has only one fixed point.
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- 2017
100. Distance constraints on activation of TRPV4 channels by AKAP150-bound PKCα in arterial myocytes
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Tajada, Sendoa, Moreno, Claudia M, O’Dwyer, Samantha, Woods, Sean, Sato, Daisuke, Navedo, Manuel F, and Santana, L Fernando
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Medical Physiology ,Biomedical and Clinical Sciences ,Hypertension ,Underpinning research ,1.1 Normal biological development and functioning ,Cardiovascular ,A Kinase Anchor Proteins ,Action Potentials ,Angiotensin II ,Animals ,Arteries ,Calcium ,Cell Membrane ,Cells ,Cultured ,Female ,Ion Channel Gating ,Male ,Mice ,Mice ,Inbred C57BL ,Muscle Cells ,Protein Binding ,Protein Kinase C-alpha ,Sex Factors ,TRPV Cation Channels ,Physiology ,Biochemistry and cell biology ,Zoology ,Medical physiology - Abstract
TRPV4 (transient receptor potential vanilloid 4) channels are Ca2+-permeable channels that play a key role in regulating vascular tone. In arterial myocytes, opening of TRPV4 channels creates local increases in Ca2+ influx, detectable optically as "TRPV4 sparklets." TRPV4 sparklet activity can be enhanced by the action of the vasoconstrictor angiotensin II (AngII). This modulation depends on the activation of subcellular signaling domains that comprise protein kinase C α (PKCα) bound to the anchoring protein AKAP150. Here, we used super-resolution nanoscopy, patch-clamp electrophysiology, Ca2+ imaging, and mathematical modeling approaches to test the hypothesis that AKAP150-dependent modulation of TRPV4 channels is critically dependent on the distance between these two proteins in the sarcolemma of arterial myocytes. Our data show that the distance between AKAP150 and TRPV4 channel clusters varies with sex and arterial bed. Consistent with our hypothesis, we further find that basal and AngII-induced TRPV4 channel activity decays exponentially as the distance between TRPV4 and AKAP150 increases. Our data suggest a maximum radius of action of ∼200 nm for local modulation of TRPV4 channels by AKAP150-associated PKCα.
- Published
- 2017
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