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354 results on '"Izumi, Shunsuke"'

1. Effect of cerebrospinal fluid drainage pressure in descending and thoracoabdominal aortic repair: a prospective multicenter observational study

Author

Yoshitani, Kenji, Ogata, Soshiro, Kato, Shinya, Tsukinaga, Akito, Takatani, Tsunenori, Kin, Nobuhide, Ezaka, Mariko, Shimizu, Jun, Furuichi, Yuko, Uezono, Shoichi, Kida, Kotaro, Seo, Katsuhiro, Kakumoto, Shinichi, Miyawaki, Hiroshi, Kawamata, Mikito, Tanaka, Satoshi, Kakinohana, Manabu, Izumi, Shunsuke, Uchino, Hiroyuki, Kakinuma, Takayasu, Nishiwaki, Kimitoshi, Hasegawa, Kazuko, Matsumoto, Mishiya, Ishida, Kazuyoshi, Yamashita, Atsuo, Yamakage, Michiaki, Yoshikawa, Yusuke, Morimoto, Yuji, Saito, Hitoshi, Goto, Takahisa, Masubuchi, Tetsuhito, Kawaguchi, Masahiko, Tsubaki, Kosuke, Mizobuchi, Satoshi, Obata, Norihiko, Inagaki, Yoshimi, Funaki, Kazumi, Ishiguro, Yoshiki, Sanui, Masamitsu, Taniguchi, Kazutaka, Nishimura, Kunihiro, and Ohnishi, Yoshihiko

Published
2023
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3. Cerebrospinal fluid drainage to prevent postoperative spinal cord injury in thoracic aortic repair

Author

Yoshitani, Kenji, Kawaguchi, Masahiko, Kawamata, Mikito, Kakinohana, Manabu, Kato, Shinya, Hasuwa, Kyoko, Yamakage, Michiaki, Yoshikawa, Yusuke, Nishiwaki, Kimitoshi, Hasegawa, Kazuko, Inagaki, Yoshimi, Funaki, Kazumi, Matsumoto, Mishiya, Ishida, Kazuyoshi, Yamashita, Atsuo, Seo, Katsuhiro, Kakumoto, Shinichi, Tsubaki, Kosuke, Tanaka, Satoshi, Ishida, Takashi, Uchino, Hiroyuki, Kakinuma, Takayasu, Yamada, Yoshitsugu, Mori, Yoshiteru, Izumi, Shunsuke, Shimizu, Jun, Furuichi, Yuko, Kin, Nobuhide, Uezono, Shoichi, Kida, Kotaro, Nishimura, Kunihiko, Nakai, Michikazu, and Ohnishi, Yoshihiko

Published
2021
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4. A practical guide for anesthetic management during intraoperative motor evoked potential monitoring

Author

Kawaguchi, Masahiko, Iida, Hiroki, Tanaka, Satoshi, Fukuoka, Naokazu, Hayashi, Hironobu, Izumi, Shunsuke, and Yoshitani, Kenji

Subjects
Medical colleges, Central nervous system agents, Neurophysiology, Health
Abstract

Postoperative motor dysfunction can develop after spinal surgery, neurosurgery and aortic surgery, in which there is a risk of injury of motor pathway. In order to prevent such devastating complication, intraoperative monitoring of motor evoked potentials (MEP) has been conducted. However, to prevent postoperative motor dysfunction, proper understanding of MEP monitoring and proper anesthetic managements are required. Especially, a variety of anesthetics and neuromuscular blocking agent are known to attenuate MEP responses. In addition to the selection of anesthetic regime to record the baseline and control MEP, the measures to keep the level of hypnosis and muscular relaxation at constant are crucial to detect the changes of MEP responses after the surgical manipulation. Once the changes of MEP are observed based on the institutional alarm criteria, multidisciplinary team members should share the results of MEP monitoring and respond to check the status of monitoring and recover the possible motor nerve injury. Prevention of MEP-related adverse effects is also important to be considered. The Working Group of Japanese Society of Anesthesiologists (JSA) developed this practical guide aimed to help ensure safe and successful surgery through appropriate anesthetic management during intraoperative MEP monitoring., Author(s): Masahiko Kawaguchi [sup.1], Hiroki Iida [sup.2], Satoshi Tanaka [sup.3], Naokazu Fukuoka [sup.4], Hironobu Hayashi [sup.1], Shunsuke Izumi [sup.5], Kenji Yoshitani [sup.6], Manabu Kakinohana [sup.5] Author Affiliations: (1) grid.410814.8, 0000 [...]

Published
2020
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10. Cellular Automata Automatically Constructed from a Bioconvection Pattern

Author

Kawaharada, Akane, Shoji, Erika, Nishimori, Hiraku, Awazu, Akinori, Izumi, Shunsuke, Iima, Makoto, Wakayama, Masato, Editor-in-chief, Anderssen, Robert S., Series editor, Bauschke, Heinz H., Series editor, Broadbridge, Philip, Series editor, Cheng, Jin, Series editor, Chyba, Monique, Series editor, Cottet, Georges-Henri, Series editor, Cuminato, José Alberto, Series editor, Ei, Shin-ichiro, Series editor, Fukumoto, Yasuhide, Series editor, Hosking, Jonathan R. M., Series editor, Jofré, Alejandro, Series editor, Landman, Kerry, Series editor, McKibbin, Robert, Series editor, Mercer, Geoff, Series editor, Parmeggiani, Andrea, Series editor, Pipher, Jill, Series editor, Polthier, Konrad, Series editor, Schilders, Wil, Series editor, Shen, Zuowei, Series editor, Toh, Kim-Chuan, Series editor, Verbitskiy, Evgeny, Series editor, Yoshida, Nakahiro, Series editor, Suzuki, Yasuhiro, editor, and Hagiya, Masami, editor

Published
2016
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13. Clinical Utility of Intraoperative Motor-Evoked Potential Monitoring to Prevent Postoperative Spinal Cord Injury in Thoracic and Thoracoabdominal Aneurysm Repair: An Audit of the Japanese Association of Spinal Cord Protection in Aortic Surgery Database

Author

Yoshitani, Kenji, Masui, Kenichi, Kawaguchi, Masahiko, Kawamata, Mikito, Kakinohana, Manabu, Kato, Shinya, Hasuwa, Kyoko, Yamakage, Michiaki, Yoshikawa, Yusuke, Nishiwaki, Kimitoshi, Aoyama, Tadashi, Inagaki, Yoshimi, Yamasaki, Kazumasa, Matsumoto, Mishiya, Ishida, Kazuyoshi, Yamashita, Atsuo, Seo, Katsuhiro, Kakumoto, Shinichi, Hayashi, Hironobu, Tanaka, Yuu, Tanaka, Satoshi, Ishida, Takashi, Uchino, Hiroyuki, Kakinuma, Takayasu, Yamada, Yoshitsugu, Mori, Yoshiteru, Izumi, Shunsuke, Nishimura, Kunihiro, Nakai, Michikazu, and Ohnishi, Yoshihiko

Published
2018
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19. Graphite Furnace Atomic Absorption Spectrometric Evaluation of Iron Excretion in Mouse Urine Caused by Whole-Body Gamma Irradiation

Author

Yoshiyama, Makoto, Okamoto, Yasuaki, Izumi, Shunsuke, and Iizuka, Daisuke

Abstract

A procedure for the determination of iron in mice urine using graphite furnace atomic absorption spectrometry was developed. The mice urinary samples contain many organic compounds in the matrix, whose concentrations are approximately 20%, and the value is 30-fold higher compared to those found in human urine. Moreover, only 0.2 mL or less of urine was obtained as a sample volume per urination event. It was difficult to decompose the organic materials in the samples by wet digestion using mineral acids and oxidising agents, because of the tiny volumes. In this experiment, raw urinary samples were placed directly into the graphite tube furnace for analysis. The organic contents were simply ashed during the preheating stages. To facilitate ashing in the furnace, air was invaded from the surroundings by interrupting the stream of argon gas. Atomic absorption was measured at 248.3270 nm (wavelength for atomic absorption), with the background monitored at 247.0658 nm (wavelength for background correction). The optimised instrument operating conditions precluded the use of chemical modification technique. The analytical procedures used are quite simple, i.e. an aliquot of raw urine sample was injected directly into the graphite tube furnace and was followed by a suitable heating programme with no chemical modifier. Therefore, this method is useful for scientists who are not familiar with delicate chemical experiments. The proposed analytical method was applied as a kind of biomarker by determining iron concentrations in urinary samples of mice, which were irradiated with 4 Gy of gamma irradiation to their whole body. The time dependence of the iron concentration was determined, and the iron concentrations increased within 1 day of irradiation exposure, then decreased to ordinal values after several days.

Published
2018

25. Cerebrospinal fluid drainage to prevent postoperative spinal cord injury in thoracic aortic repair

Author

Yoshitani, Kenji, primary, Kawaguchi, Masahiko, additional, Kawamata, Mikito, additional, Kakinohana, Manabu, additional, Kato, Shinya, additional, Hasuwa, Kyoko, additional, Yamakage, Michiaki, additional, Yoshikawa, Yusuke, additional, Nishiwaki, Kimitoshi, additional, Hasegawa, Kazuko, additional, Inagaki, Yoshimi, additional, Funaki, Kazumi, additional, Matsumoto, Mishiya, additional, Ishida, Kazuyoshi, additional, Yamashita, Atsuo, additional, Seo, Katsuhiro, additional, Kakumoto, Shinichi, additional, Tsubaki, Kosuke, additional, Tanaka, Satoshi, additional, Ishida, Takashi, additional, Uchino, Hiroyuki, additional, Kakinuma, Takayasu, additional, Yamada, Yoshitsugu, additional, Mori, Yoshiteru, additional, Izumi, Shunsuke, additional, Shimizu, Jun, additional, Furuichi, Yuko, additional, Kin, Nobuhide, additional, Uezono, Shoichi, additional, Kida, Kotaro, additional, Nishimura, Kunihiko, additional, Nakai, Michikazu, additional, and Ohnishi, Yoshihiko, additional

Published
2020
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28. Generation of 6.6-micron optical parametric oscillation with periodically pooled LiNbO3

Author

Sato, Manabu, Hatanaka, Takaaki, Izumi,Shunsuke, Taniuchi, Tetsuo, and Ito, Hiromasa

Subjects
Optical instruments -- Analysis, Crystal oscillators -- Analysis, Astronomy, Physics
Abstract

Greater than 6-[[micro]meter]-oscillation was demonstrated by means of optical parametric oscillation with periodically poled LiNb[O.sub.3] (PPLN). The interaction length and thickness were 40 mm and 500 [[micro]meter]. The pump source used was a Q-switched Nd:YAG laser with a pulse duration of 120 ns and a repetition rate of 1 kHz. The tuning ranges of the idler waves were 6.57-6.56, 6.22-6.12, and 6.06-5.94 [[micro]meter] for PPLN wafers of 20-, 21.3-, and 22-[[micro]meter] periods, respectively.

Published
1999

33. pH‐Sensitive Oscillatory Motion of a Urease Motor on the Urea Aqueous Phase.

Author

Xu, Yu, Ji, Lin, Izumi, Shunsuke, and Nakata, Satoshi

Subjects
UREA, MOLECULAR motor proteins, FILTER paper, UREASE, SURFACE reactions, AQUEOUS solutions, ENZYMES
Abstract

A self‐propelled object coupled with an enzyme reaction between urease and urea was investigated at the air/aqueous interface. A plastic object that was fixed to a urease‐immobilized filter paper was used as a self‐propelled object, termed a urease motor, placed on an aqueous urea solution. The driving force of the urease motor is the difference in the surface tension around the object. Oscillatory motion or no motion was triggered depending on the initial pH of the urea solution. Both the frequency and maximum speed of the oscillatory motion varied depending on the initial pH of the water phase. The mechanisms underlying the oscillatory motion and no motion were discussed in relation to the bell‐shaped enzyme activity of urease in the enzyme reaction and the surface tension around the urease motor. [ABSTRACT FROM AUTHOR]

Published
2021
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44. Studies on substantially increased proteins in follicular fluid of bovine ovarian follicular cysts using 2-D PAGE and MALDI-TOF MS

Author

Isobe Naoki, Izumi Shunsuke, Maniwa Jiro, and Terada Takato

Subjects
Gynecology and obstetrics, RG1-991, Reproduction, QH471-489
Abstract

Abstract Background The objective of this study was to identify substantially increased proteins in bovine cystic follicular fluid (FF) in order to clarify the pathology and etiology of bovine ovarian follicular cysts (BOFC). Methods Proteins in normal and cystic FF samples were subjected to two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) and were compared using silver stained gel images with PDQuest image analysis software. Peptides from these increased spots were analyzed by matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS), and were identified based on the NCBI database by a peptide mass fingerprinting method. Results Comparative proteomic analysis showed 8 increased protein spots present in cystic FF. MS analysis and database searching revealed that the increased proteins in cystic FF were bovine mitochondrial f1-atpase (BMFA), erythroid associated factor (EAF), methionine synthase (MeS), VEGF-receptor, glyceraldehydes 3-phosphate dehydrogenase (GAPDH), heat shock protein 70 (HSP70), β-lactoglobulin (BLG) and succinate dehydrogenase Ip subunit (SD). Conclusion Our results suggest that these proteins are overexpressed in BOFC, and that they may play important roles in the pathogenesis of BOFC. Furthermore, these proteins in the FF could be useful biomarkers for BOFC.

Published
2005
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