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Yamauchi Y, Kojima T. Follow-up to 'Glycaemic management in a child with ornithine transcarbamylase deficiency undergoing cardiac surgery with hypothermic cardiopulmonary bypass'. Anaesth Rep 2024; 12:e12277. [PMID: 38229661 PMCID: PMC10788310 DOI: 10.1002/anr3.12277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 01/18/2024] Open
Affiliation(s)
- Y. Yamauchi
- Aichi Children's Health and Medical CenterAichiJapan
| | - T. Kojima
- Aichi Children's Health and Medical CenterAichiJapan
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2
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Shigeta T, Yamauchi Y, Oda A, Sudo K, Arai H, Sagawa Y, Okishige K, Goya M, Sasano T. Cryoballoon ablation of left atrial roof with a novel cryoballoon system. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
A novel cryoballoon system (POLARx) has emerged and its efficacy regarding pulmonary vein isolation (PVI) has been already investigated. On the other hand, cryoballoon ablation of left atrial (LA) roof has been performed using a conventional cryoballoon system (Arctic Front Advance Pro [AFA-Pro]) in addition to PVI. However, cryoballoon ablation of LA roof with POLARx has not been investigated yet.
Methods
We performed cryoballoon ablation of LA roof with POLARx in 22 patients after we achieved PVI. After the cryoballoon ablation, complete conduction block at LA roof and isolation of all PVs were confirmed by creating an activation map during high right atrium pacing. If they could not be obtained with solely a cryoballoon, touch up ablation with radiofrequency ablation was permitted. The procedural data during ablation with POLARx was compared with those during ablation with AFA-Pro we had performed in a historical cohort of patients (n=46).
Results
Complete conduction block at LA roof without touch up ablation could be obtained in all the patients in POLARx group and 44 (95.7%) patients in AFA-Pro group. Total procedure time was almost similar in both groups (164.2±35.4 min for POLARx vs 180.3±35.4 min for AFA-Pro, p=0.10). During LA roof line ablation, nadir balloon temperature was significantly lower in POLARx group (right side: −53.6±4.4°C for POLARx vs −45.6±4.6°C for AFA-Pro, p<0.01, central part: −56.4±4.3°C for POLARx vs −46.0±3.7°C for AFA-Pro, p<0.01, left side: −55.1±3.5°C for POLARx vs −45.7±5.3°C for AFA-Pro, p<0.01), and balloon temperature reached −40°C earlier in POLARx (right side: 30.7±8.9 sec for POLARx vs 78.0±39.8 sec for AFA-Pro, p<0.01, central part: 30.6±9.3 sec for POLARx vs 65.9±33.3 sec for AFA-Pro, p<0.01, left side: 30.4±4.2 sec for POLARx vs 78.8±49.6 sec for AFA-Pro, p<0.01). Total freezing time required for LA roof line ablation was significantly shorter in POLARx group (589.3±163.6 sec for POLARx vs 877.5±191.7 sec for AFA-Pro, p<0.01).The scar area created after LA roof line ablation was similar in both groups (9.3±4.1 cm2 for POLARx vs 11.0±4.8 cm2 for AFA-Pro, p=0.23).
Conclusion
Complete conduction block at LA roof could be obtained after cryoballoon ablation with POLARx, in the same way as AFA-Pro. Lower nadir balloon temperature could be expected in shorter freezing time during LA roof line ablation in using POLARx compared with AFA-Pro.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- T Shigeta
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - Y Yamauchi
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - A Oda
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - K Sudo
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - H Arai
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - Y Sagawa
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - K Okishige
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - M Goya
- Tokyo Medical and Dental University, Cardiology , Tokyo , Japan
| | - T Sasano
- Tokyo Medical and Dental University, Cardiology , Tokyo , Japan
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Shigeta T, Yamauchi Y, Oda A, Sudo K, Arai H, Sagawa Y, Okishige K, Goya M, Sasano T. How to perform effective cryoballooon ablation of left atrial roof: considerations after experiences of more than 1000 cases. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Although pulmonary vein isolation is the cornerstone of atrial fibrillation (AF) ablation, concomitant cryoballoon ablation of left atrial (LA) roof has been expected to improve clinical outcomes after ablation. We demonstrate characteristics and efficacy of cryoballoon ablation of LA roof through our experiences from a large volume of procedures.
Methods
We had performed cryoballoon ablation of LA roof in 1036 procedures including 202 redo procedures in AF patients since June 2016. Among these procedures, we analyzed 834 patients (309 paroxysmal AF) who had undergone de novo ablation for AF. We confirmed whether the complete conduction block of LA roof line was obtained after the ablation.
Results
LA roof line block was obtained in 767 patients (92.0%) without touch up ablation with a radiofrequency catheter (Group A). LA diameter (LAD) was significantly smaller (43.6±6.6mm vs 47.4±7.5mm, p<0.01) and body mass index (BMI) was significantly lower (24.9±4.0kg/m2 vs 26.3±4.6kg/m2, p=0.01) in those in Group A compared with those without LA roof line block after cryoballoon ablation (Group B). Compared with those in Group B, cryoballoon application number of LA roof (4.1±1.2 vs 4.5±1.6, p<0.01) and mean nadir of cryoballoon temperature during cryoballoon ablation of LA roof (−44.5±5.6°C vs −40.5±7.5°C, p<0.01) were significantly lower in those in Group A. Regarding cryoballoon application number, the number of the cryoballoon application in which a cryoballoon was applied to LA roof with the guiding catheter located in a left superior pulmonary vein (LSPV) was significantly lower in patients in Group A (1.3±0.8 vs 1.6±1.0, p=0.02), and when the number was less than 2, mean nadir of cryoballoon temperature was significantly lower compared with when it was 2 or more than 2 (−44.8±5.8°C vs −42.8±5.6°C, p<0.01). Among those refer to first ablation procedures, one-year Kaplan-Meier atrial arrhythmias free rate estimates, 80.6% for those in Group A and 59.0% for those in Group B (p<0.01). Multivariate analysis identified LA roof line block without touch up ablation as one of the predictors of atrial arrhythmias recurrences. Atrial tachycardia depending on LA roof occurred after cryoballoon ablation of LA roof in 8 patients, although LA roof line block without touch up ablation could be obtained in the index ablation procedure in 6 patients among them.
Conclusion
LA roof line block could be obtained by solely cryoballoon with a reasonable success rate, especially in those with smaller LAD and lower BMI. To obtaine LA roof line block, cryoballoon ablation with the guiding catheter located in LSPV is preferable. LA roof line block without touch up ablation brings better clinical outcomes in those who underwent cryoballoon ablation of LA roof.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- T Shigeta
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - Y Yamauchi
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - A Oda
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - K Sudo
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - H Arai
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - Y Sagawa
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - K Okishige
- Japan Red Cross Yokohama City Bay Hospital, Department of Cardiology , Yokohama , Japan
| | - M Goya
- Tokyo Medical and Dental University, Heart Rhythm Center , Tokyo , Japan
| | - T Sasano
- Tokyo Medical and Dental University, Cardiology , Tokyo , Japan
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Yamauchi Y, Yamamoto Y, Yokote F, Dejima H, Saito Y, Sakao Y, Kawamura M. EP16.01-028 Immunomodulatory Effects of Cryoablation Combined With Immune Checkpoint Inhibitors in a Murine Lung Cancer Model. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yamauchi Y, Kawamura M, Okami J, Shintani Y, Ito H, Ohtsuka T, Toyooka S, Mori T, Watanabe SI, Asamura H, Chida M, Endo S, Kadokura M, Nakanishi R, Miyaoka E, Yoshino I, Date H. 944P Hazard function analysis of recurrence in patients with curatively resected lung cancer: Results from the Japanese Lung Cancer Registry in 2010. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Yamauchi Y, Yamada A, Kojima T. Glycaemic management in a child with ornithine transcarbamylase deficiency undergoing cardiac surgery with hypothermic cardiopulmonary bypass. Anaesth Rep 2022; 10:e12179. [PMID: 35874323 PMCID: PMC9299967 DOI: 10.1002/anr3.12179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2022] [Indexed: 07/22/2023] Open
Abstract
There is a lack of evidence regarding the optimal intra-operative glycaemic level of patients with ornithine transcarbamylase deficiency to prevent cerebral oedema due to protein catabolism and hyperammonemia. We describe a case of a two-year-old girl with ornithine transcarbamylase deficiency who underwent cardiac surgery requiring cardiopulmonary bypass. A high-dose dextrose infusion to prevent protein catabolism was given throughout surgery, which caused uncontrollable hyperglycaemia unresponsive to high-dose insulin administration. Factors contributing to the hyperglycaemia may have included surgical stress, steroid administration and hypothermia. During invasive surgery, anaesthetists should carefully adjust the rates of dextrose and insulin infusions, guided by close monitoring of blood ammonia, glucose and lactate.
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Affiliation(s)
- Y. Yamauchi
- Department of AnaesthesiologyAichi Children's Health and Medical CenterAichiJapan
| | - A. Yamada
- Department of AnaesthesiologyAichi Children's Health and Medical CenterAichiJapan
| | - T. Kojima
- Department of AnaesthesiologyAichi Children's Health and Medical CenterAichiJapan
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Goel I, Noiri M, Yamauchi Y, Kato K, Chung UI, Teramura Y. Enhancement of intercellular interaction between iPSC-derived neural progenitor cells and activated endothelial cells using cell surface modification with functional oligopeptides. Biomater Sci 2022; 10:925-938. [PMID: 35014994 DOI: 10.1039/d1bm01503f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cell-based therapy has been used to treat stroke related disorders, which have no treatment options available 4.5 hours after onset. Although the administration of tissue plasminogen activator and mechanical thrombectomy are potent treatments, their clinical implementation is limited within the available time. Here, we aimed to use induced pluripotent stem cell-derived neural progenitor cells (NPCs) for stroke treatment with higher delivery efficiency in stroke areas, which will improve the therapeutic effect. E-selectin binding oligopeptide (Esbp) was conjugated with poly(ethylene glycol)-conjugated-lipid (Esbp-PEG-lipid) with different molecular weights of PEG (5 and 40 kDa) for cell surface modification. Then, we optimized the cell surface modification of NPCs by studying cell-binding ability onto the model surfaces of stroke areas, such as recombinant E-selectin-immobilized surfaces and TNF-α activated endothelium. As a result, the cell surface modification of NPCs with Esbp-PEG-lipid was found to induce specific intercellular interactions with the activated endothelium through the binding of Esbp with E-selectin. Additionally, the shorter PEG spacer was suitable for intercellular interactions. Thus, our technique shows potential for use in cell therapy with enhanced cell accumulation in infarct areas.
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Affiliation(s)
- Isha Goel
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Makoto Noiri
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Yuka Yamauchi
- Department of Biomaterials, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.,Department of Orthodontics, Division of Oral Health and Development, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Koichi Kato
- Department of Biomaterials, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Ung-Il Chung
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Yuji Teramura
- Cellular and Molecular Biotechnology Research Institute (CMB), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central fifth, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. .,Department of Immunology, Genetics and Pathology (IGP), Uppsala University, Dag Hammarskjölds väg 20, SE-751 85, Uppsala, Sweden
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8
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Saito Y, Yokote F, Takeuchi K, Honda T, Numakura S, Dejima H, Sakuramachi M, Yamauchi Y, Mori T, Motoi N, Shiraishi K, Saito K, Seki N, Sakao Y, Kawamura M. P41.02 Surgery for Small Pulmonary NUT Carcinoma: Case Report. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Saito Y, Matsui A, Michiyuki S, Morooka H, Ibi T, Yamauchi Y, Takahashi N, Shimizu Y, Ikeya T, Hoshi E, Sakao Y, Kawamura M. 1794P Rapid diagnosis of liquid biopsy in non-small cell lung cancer by the EGFR-LAMP assay. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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10
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Oya M, Shimada M, Taylor C, Kobayashi M, Nobuta Y, Yamauchi Y, Oya Y, Ueda Y, Hatano Y. Deuterium retention in tungsten irradiated by high-dose neutrons at high temperature. Nuclear Materials and Energy 2021. [DOI: 10.1016/j.nme.2021.100980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yamauchi Y, Saito Y, Shirai S, Yokote F, Sakai T, Dejima H, Sakao Y, Kawamura M. P04.08 Dynamics of Coagulation Factor XIII Activity After Thoracoscopic Lobectomy for Early-Stage Lung Cancer Patients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Shibata N, Matsumoto K, Shiraki H, Yamauchi Y, Yoshigai Y, Shono A, Sumimoto K, Suzuki M, Tanaka Y, Yamashita K, Yokota S, Suto M, Dokuni K, Tanaka H, Hirata K. Preload stress echocardiography by using dynamic postural alteration can identify high risk patients with heart failure with reduced ejection fraction. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Haemodynamic assessment during stress testing is not commonly performed for patients with heart failure with reduced ejection fraction (HFrEF) due to its invasiveness, less feasibility, and safety concerns. Passive leg-lifting (PLL) manoeuvres have been introduced as a simple alternative for non-invasive preload stress testing; however, the haemodynamic load imposed on the cardiovascular system is unsatisfactory, which precludes the accurate assessment of the preload reserve for patients with HF.
Purpose
The purpose of this study was to assess the haemodynamic characteristics of patients with HFrEF in response to a preload stress during dynamic postural alterations by combining the semi-sitting position (SSP) and PLL. We also evaluated whether combined postural stress could be used for risk stratification for these patients.
Methods
For this study, 101 patients with HFrEF and 35 age- and sex-matched normal controls were prospectively recruited. At each postural position (i.e., baseline, SSP, and PLL), all standard echocardiographic and Doppler variables were obtained. Adverse cardiac events were prespecified as the combined endpoints of death from or hospitalisation for deteriorated HF, or sudden cardiac death. Clinical follow-up was conducted for a median of 7 months.
Results
During PLL stress, the stroke volume index (SVi) significantly increased in both controls (from 40 ± 6 to 43 ± 6 mL/m², P = 0.03) and HFrEF patients (from 31 ± 9 to 34 ± 10 mL/m², P = 0.03). Conversely, during SSP stress, the SVi significantly decreased for both controls (from 40 ± 6 to 37 ± 6 mL/m², P = 0.03) and HFrEF patients (31 ± 9 to 28 ± 8 mL/m², P = 0.03). During the follow-up period, 16 patients developed cardiac events. In patients without events, the Frank-Starling mechanism was well preserved (Fig. A). Namely, the SVi significantly increased from 31 ± 9 to 35 ± 10 mL/m² (P = 0.02) during PLL stress, while the SVi significantly decreased from 31 ± 8 to 28 ± 8 mL/m² (P = 0.02) during SSP stress. In contrast, for patients with cardiac events, the SVi did not change during postural alterations (n.s), which indicated that the failing heart operates on the flat portion of the Frank-Starling curve (Fig. A). When patients were divided into three equal sub-groups based on the total difference in the SVi during dynamic postural stress, patients with impaired preload reserve (third trimester, ΔSVi ≤ 3.0 mL/m²) showed significantly worse event-free survival than the other two sub-groups (Fig. B; P < 0.001). In a Cox proportional-hazard analysis, baseline LVEF (hazard ratio 0.93; P = 0.04), and ΔSVi during postural stress (hazard ratio 0.76; P = 0.004) were predictors of future cardiac events.
Conclusions
The combined assessment of dynamic postural stress during PLL and SPP is a simple, time-saving, and easy-to-use clinical tool for the assessment of preload reserve for patients with HFrEF. Moreover, postural stress echocardiography proved to contribute to the risk stratification for these patients.
Abstract Figure.
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Affiliation(s)
| | | | | | | | | | - A Shono
- Kobe University, Kobe, Japan
| | | | | | | | | | | | - M Suto
- Kobe University, Kobe, Japan
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Nishiyama S, Hirose N, Yanoshita M, Takano M, Kubo N, Yamauchi Y, Onishi A, Ito S, Sakata S, Kita D, Asakawa-Tanne Y, Tanimoto K. ANGPTL2 Induces Synovial Inflammation via LILRB2. Inflammation 2021; 44:1108-1118. [PMID: 33538932 DOI: 10.1007/s10753-020-01406-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 12/16/2022]
Abstract
Angiopoietin-like proteins (ANGPTLs) are circulating proteins that are expressed in various cells and tissues and are thought to be involved in the repair and remodeling of damaged tissues; however, ANGPTL2 hyperfunction has been shown to cause chronic inflammation, leading to the progression of various diseases. ANGPTL2 is known to exert cellular effects via receptors such as integrin α5β1 and leukocyte immunoglobulin-like receptor subfamily B member 2 (LILRB2); however, their roles in ANGPTL2-induced inflammation remain unclear. In this study, we investigated the mechanisms underlying ANGPTL2-induced inflammation involving LILRB2 and various signaling pathways in human fibroblast-like synoviocytes (HFLS). The effects of ANGPTL2 and an anti-LILRB2 antibody on the gene expression of various inflammation-related factors were examined using real-time RT-PCR, while their effects on MAPK, NF-κB, and Akt phosphorylation were analyzed by western blotting. We found that the addition of ANGPTL2 enhanced the gene expression of inflammatory factors, whereas pretreatment with the anti-LILRB2 antibody for 12 h decreased the expression of these factors. Similarly, ANGPTL2 addition activated the phosphorylation of ERK, p38, JNK, NF-κB, and Akt in HFLS; however, this effect was significantly inhibited by pretreatment with the anti-LILRB2 antibody. Together, the findings of this study demonstrate that ANGPTL2 induces the expression of inflammatory factors via LILRB2 in synovial cells. Therefore, LILRB2 could be a potential therapeutic agent for treating matrix degradation in osteoarthritis.
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Affiliation(s)
- Sayuri Nishiyama
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Naoto Hirose
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan.
| | - Makoto Yanoshita
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Mami Takano
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Naoki Kubo
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Yuka Yamauchi
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Azusa Onishi
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Shota Ito
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Shuzo Sakata
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Daiki Kita
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Yuki Asakawa-Tanne
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, Kasumi 1-2-3, Minami-ku, Hiroshima-shi, Hiroshima Prefecture, Japan
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14
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Blonskaya I, Lizunov N, Olejniczak K, Orelovich O, Yamauchi Y, Toimil-Molares M, Trautmann C, Apel P. Elucidating the roles of diffusion and osmotic flow in controlling the geometry of nanochannels in asymmetric track-etched membranes. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118657] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Jibran M, Sun X, Hua J, Wang B, Yamauchi Y, Da B, Ding Z. Cu2Zn(Si,Ge)Se4 quaternary semiconductors as potential photovoltaic materials. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Yanoshita M, Hirose N, Sumi C, Takano M, Nishiyama S, Tsuboi E, Onishi A, Yamauchi Y, Asakawa Y, Ryo K, Tanimoto K. FAK inhibition protects condylar cartilage under excessive mechanical stress. Oral Dis 2020; 26:1736-1746. [DOI: 10.1111/odi.13494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/28/2020] [Accepted: 06/08/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Makoto Yanoshita
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Naoto Hirose
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Chikako Sumi
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Mami Takano
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Sayuri Nishiyama
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Eri Tsuboi
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Azusa Onishi
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Yuka Yamauchi
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Yuki Asakawa
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Kunimatsu Ryo
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima prefecture Japan
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Yamauchi Y, Hirata I, Tanimoto K, Kato K. Epidermal growth factor‐immobilized surfaces for the selective expansion of neural progenitor cells derived from induced pluripotent stem cells. Biotechnol Bioeng 2020; 117:2741-2748. [DOI: 10.1002/bit.27445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Yuka Yamauchi
- Department of Biomaterials, Graduate School of Biomedical and Health SciencesHiroshima University Hiroshima Japan
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health SciencesHiroshima University Hiroshima Japan
| | - Isao Hirata
- Department of Biomaterials, Graduate School of Biomedical and Health SciencesHiroshima University Hiroshima Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health SciencesHiroshima University Hiroshima Japan
| | - Koichi Kato
- Department of Biomaterials, Graduate School of Biomedical and Health SciencesHiroshima University Hiroshima Japan
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18
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Tsujimura T, Iida O, Takahara M, Yamauchi Y, Shintani Y, Sugano T, Yamamoto Y, Kawasaki D, Yokoi H, Miyamoto A, Mano T. P4704The efficacy of intravascular ultrasound for patients with peripheral artery diseases presenting aorto-iliac artery disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The use of intravascular ultrasound (IVUS) promotes better clinical outcomes for intervention in complex lesions. However, the data demonstrating whether use of IVUS improves primary patency following stenting for aorto-iliac lesions in patients with peripheral artery disease (PAD) are limited.
Purpose
The purpose of the current study was to investigate the impact of IVUS use on primary patency 12 months after stent implantation for aorto-iliac lesions.
Methods
We analyzed a clinical database of the OMOTENASHI registry (Observational prospective Multicenter registry study on Outcomes of peripheral arTErial disease patieNts treated by AngioplaSty tHerapy in aortoIliac artery), registering symptomatic PAD patients (Rutherford category 2, 3, or 4) undergoing endovascular therapy for aorto-iliac lesions between January 2014 and April 2016 in Japan. The current study analyzed 803 patients who underwent self-expandable stent implantation at 61 centers with the institutional volume known. The primary endpoint was 12-month restenosis, defined as ≥50% stenosis on computed tomography or angiography, or a peak systolic velocity ratio ≥2.5 on duplex ultrasound. When treatment strategies, endovascular procedures and clinical outcomes were compared between the patients treated with IVUS use and those treated without IVUS use, the propensity score matching was performed to minimize the inter-group difference in baseline characteristics.
Results
A total of 545 patients (67.9%) underwent IVUS-supported stent implantation. Patients treated with IVUS use had a lower prevalence of regular dialysis, whereas they had a higher prevalence of TASC II class D and chronic total occlusion. In patients treated with IVUS use, carbon dioxide contrast agent were more often used, and 0.035-inch guidewire was less frequently selected. Implanted stents in these patients were longer and smaller in diameter. The propensity score matching extracted 138 pairs, with no remarkable intergroup difference in baseline characteristics. Procedure time ≤1 hour was less frequent in patients treated with IVUS use; their radiation time was longer. Endovascular strategies, as well as postoperative medication were not significantly different between patients with and without IVUS use. The 12-month restenosis risk was not significantly different between patients with and without IVUS use (10.2% [6.9 to 14.9%] versus 10.3% [5.4 to 18.6%], P=0.99).
Conclusion
IVUS use in aorto-iliac stenting for patients with PAD was not associated with primary patency at 12 months.
Acknowledgement/Funding
None
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Affiliation(s)
- T Tsujimura
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - O Iida
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - M Takahara
- Osaka University Graduate School of Medicine, Department of Metabolic Medicine, Osaka, Japan
| | - Y Yamauchi
- Takatsu General Hospital, Cardiovascular Center, Kawasaki, Japan
| | - Y Shintani
- Shin-Koga Hospital, Department of Cardiology, Fukuoka, Japan
| | - T Sugano
- Yokohama City University Hospital, Department of Cardiovascular Medicine, Yokohama, Japan
| | - Y Yamamoto
- Iwaki Kyoritsu General Hospital, Department of Cardiovascular Medicine, Fukushima, Japan
| | - D Kawasaki
- Morinomiya Hospital, Cardiovascular Division, Department of Internal Medicine, Osaka, Japan
| | - H Yokoi
- Fukuoka Sanno Hospital, Cardiovascular Center, Fukuoka, Japan
| | - A Miyamoto
- Takatsu General Hospital, Cardiovascular Center, Kawasaki, Japan
| | - T Mano
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
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19
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Sakai T, Yamauchi Y, Yokote F, Saito Y, Uehara H, Saito K, Sakao Y, Kawamura M. EP1.15-23 Cardiac Tamponade Caused by a Type A Thymoma: A Case Report. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Yokote F, Yamauchi Y, Sakai T, Saito Y, Uehara H, Sakao Y, Kawamura M. EP1.17-07 Partial Anomalous Pulmonary Venous Connection Found During a Lobectomy for Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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21
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Shimada M, Oya Y, Wampler W, Yamauchi Y, Taylor C, Garrison L, Buchenauer D, Hatano Y. Deuterium retention in neutron-irradiated single-crystal tungsten. Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2018.04.094] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Yamauchi Y, Okishige K, Shigeta T, Nishimura T, Nakamura R, Aoyagi H, Hirao K. P5753How to create linear conduction block at left atrial roof by cyroballoon catheter. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y Yamauchi
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - K Okishige
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - T Shigeta
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - T Nishimura
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - R Nakamura
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - H Aoyagi
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - K Hirao
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
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23
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Yamauchi Y, Yamauchi Y, Okishige K, Shigeta T, Nishimura T, Aoyagi H, Nakamura R, Hiao K. P1915An underrecognized complication of coronary artery spasm during cryoballoon-guided atrial fibrillation ablation under deep sedation with dexmedetomidine. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Yamauchi
- Musashino Red Cross Hospital, cardiology, Musashino, Japan
| | - Y Yamauchi
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - K Okishige
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - T Shigeta
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - T Nishimura
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - H Aoyagi
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - R Nakamura
- Yokohama Minato Red Cross Hospital, Cardiology, Yokohama, Japan
| | - K Hiao
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
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24
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Li ZY, Jibran M, Sun X, Pratt A, Wang B, Yamauchi Y, Ding ZJ. Enhancement of the spin polarization of an Fe 3O 4(100) surface by nitric oxide adsorption. Phys Chem Chem Phys 2018; 20:15871-15875. [PMID: 29845166 DOI: 10.1039/c8cp02361a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The geometric, electronic and magnetic properties of a nitric oxide (NO) adsorbed Fe3O4(100) surface have been investigated using density functional theory (DFT) calculations. NO molecules preferentially bond with surface Fe(B) atoms via their N atoms. The generalized gradient approximation (GGA) is not recommended to be used in such a strongly correlated system since it provides not only an overestimation of the adsorption energy and an underestimation of the Fe(B)-N bond length, but also magnetic quenching of the adsorbate and the bonded Fe(B) atoms. In contrast, a tilted geometry and magnetization of the adsorbate and the bonded Fe(B) atom are obtained after including the strong on-site Coulomb interactions through a Hubbard term (GGA+U). The spin-down 2π* states of the NO molecule are filled and broadened due to the adsorbate-substrate interaction and the molecule-molecule interaction. The surface spin polarization close to the Fermi level is expected to be greatly enhanced by the NO adsorption which has significance for interface design in spintronic devices.
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Affiliation(s)
- Z Y Li
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
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25
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Yanoshita M, Hirose N, Okamoto Y, Sumi C, Takano M, Nishiyama S, Asakawa-Tanne Y, Horie K, Onishi A, Yamauchi Y, Mitsuyoshi T, Kunimatsu R, Tanimoto K. Cyclic Tensile Strain Upregulates Pro-Inflammatory Cytokine Expression Via FAK-MAPK Signaling in Chondrocytes. Inflammation 2018; 41:1621-1630. [DOI: 10.1007/s10753-018-0805-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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26
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Kawahara K, Yamauchi Y, Niizeki K, Yoshioka T. Interactions between Respiratory, Cardiac and Stepping Rhythms in Decerebrated Cats: Functional Hierarchical Structures of Biological Oscillators. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:Interactions are described of central origin between respiratory, cardiac and stepping rhythms during fictive locomotion in paralyzed, vagotomized, and decerebrated cats. Fictive locomotion was induced by tonic electrical stimulation of the mesencephalic locomotor region (MLR). The coherence between heart beat fluctuation, the efferent discharges of the phrenic, and the lateral gastrocnemius nerves was used to evaluate the strength of the coupling between those three rhythms. The heart beat rhythm was modulated by the centrally generated respiratory and stepping rhythms. The central respiratory rhythm was modulated by the centrally generated stepping rhythm. Based on the present findings, we have proposed a new model concerning the functional hierarchical structures of the three biological oscillators.
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27
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Sun X, Li ZY, Jibran M, Pratt A, Yamauchi Y, Wang B. Reversible switching of the spin state in a manganese phthalocyanine molecule by atomic nitrogen. Phys Chem Chem Phys 2017; 19:32655-32662. [PMID: 29192911 DOI: 10.1039/c7cp06641d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reversible control of the spin state of an organic molecule is significant for the development of molecular spintronic devices. Here, density functional theory calculations have been performed to study the adsorption of atomic nitrogen on a single manganese phthalocyanine (MnPc) molecule, three-layered MnPc, and MnPc on an Fe(100) surface. For all three cases, the N atom strongly adsorbs on top of the Mn atom and induces a significant variation of the geometric, electronic and magnetic properties. After N adsorption, an energy gap appears and the electronic states become unpolarized. Different functionals including three hybrid functionals are used in these calculations, and all yield a switchable spin state.
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Affiliation(s)
- X Sun
- Key Laboratory of Strong-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China, Hefei, Anhui 230026, China.
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28
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Ohira-Kawamura S, Oku T, Watanabe M, Takahashi R, Munakata K, Takata S, Sakaguchi Y, Ishikado M, Ohuchi K, Hattori T, Kira H, Sakai K, Aso T, Yamauchi Y, Isomae S. Sample environment at the J-PARC MLF. JNR 2017. [DOI: 10.3233/jnr-170046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Ohira-Kawamura
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T. Oku
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - M. Watanabe
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - R. Takahashi
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - K. Munakata
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - S. Takata
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y. Sakaguchi
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - M. Ishikado
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - K. Ohuchi
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - T. Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - H. Kira
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - K. Sakai
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T. Aso
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Y. Yamauchi
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - S. Isomae
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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29
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Li Z, Jibran M, Sun X, Pratt A, Wang B, Yamauchi Y, Ding Z. Influence of electron correlation on the electronic and magnetic structures of nitric-oxide-adsorbed manganese phthalocyanine. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.02.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Masuzaki S, Ashikawa N, Nishimura K, Tokitani M, Hino T, Yamauchi Y, Nobuta Y, Yoshida N, Miyamoto M, Sagara A, Noda N, Yamada H, Komori A. Wall Conditioning in LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10816] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ashikawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Nishimura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Tokitani
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Hino
- Hokkaido University, Sapporo 060-8628, Japan
| | - Y. Yamauchi
- Hokkaido University, Sapporo 060-8628, Japan
| | - Y. Nobuta
- Hokkaido University, Sapporo 060-8628, Japan
| | - N. Yoshida
- Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
| | | | - A. Sagara
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Noda
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, Toki 509-5292, Japan
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31
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Tsuzuki K, Kimura H, Kusama Y, Sato M, Kawashima H, Kamiya K, Shinohara K, Ogawa H, Uehara K, Kurita G, Kasai S, Hoshino K, Isei N, Miura Y, Yamamoto M, Kikuchi K, Shibata T, Bakhtiari M, Hino T, Hirohata Y, Yamauchi Y, Yamaguchi K, Tsutsui H, Shimada R, Amemiya H, Nagashima Y, Ido T, Hamada Y. Characteristics of Plasma Operation with the Ferritic inside Wall and Its Compatibility with High-Performance Plasmas in JFT-2M. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tsuzuki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - H. Kimura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - H. Kawashima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - K. Kamiya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - H. Ogawa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - K. Uehara
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - G. Kurita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - S. Kasai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - K. Hoshino
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - N. Isei
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - Y. Miura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - M. Yamamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - K. Kikuchi
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - T. Shibata
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-shi, Inaraki 319-0193, Japan
| | - M. Bakhtiari
- University of Wisconsin, Madison, Wisconsin 53706
| | - T. Hino
- Hokkaido University Sapporo, Hokkaido 060-8628, Japan
| | - Y. Hirohata
- Hokkaido University Sapporo, Hokkaido 060-8628, Japan
| | - Y. Yamauchi
- Hokkaido University Sapporo, Hokkaido 060-8628, Japan
| | - K. Yamaguchi
- Hokkaido University Sapporo, Hokkaido 060-8628, Japan
| | - H. Tsutsui
- Tokyo Institute of Technology, Meguro-ku Tokyo 152-8550, Japan
| | - R. Shimada
- Tokyo Institute of Technology, Meguro-ku Tokyo 152-8550, Japan
| | - H. Amemiya
- The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, Japan
| | - Y. Nagashima
- National Institute for Fusion Science, Toki-shi 509-5292, Japan
| | - T. Ido
- National Institute for Fusion Science, Toki-shi 509-5292, Japan
| | - Y. Hamada
- National Institute for Fusion Science, Toki-shi 509-5292, Japan
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32
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Yamauchi Y, Kimura Y, Kosaka Y, Nobuta Y, Hino T, Nishimura K, Ueda Y. Hydrogen Isotope Retention and Desorption in Tungsten during Glow Discharges. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Yamauchi
- Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Y. Kimura
- Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Y. Kosaka
- Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Y. Nobuta
- Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - T. Hino
- Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - K. Nishimura
- National Institute for Fusion Science, Toki, Gifu, 509-5292, Japan
| | - Y. Ueda
- Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
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33
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Masuzaki S, Kobayashi M, Tokitani M, Ashikawa N, Hino T, Yamauchi Y, Nobuta Y, Yoshida N, Miyamoto M, Sakamoto R, Miyazawa J, Morisaki T, Ohyabu N, Yamada H, Komori A. Fuel Retention in LHD. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Masuzaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Kobayashi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - M. Tokitani
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ashikawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Hino
- Hokkaido University, Sapporo 060-8628, Japan
| | - Y. Yamauchi
- Hokkaido University, Sapporo 060-8628, Japan
| | - Y. Nobuta
- Hokkaido University, Sapporo 060-8628, Japan
| | - N. Yoshida
- Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
| | | | - R. Sakamoto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - J. Miyazawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Morisaki
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Ohyabu
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Komori
- National Institute for Fusion Science, Toki 509-5292, Japan
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Taylor CN, Yamauchi Y, Shimada M, Oya Y, Hatano Y. Deuterium Retention in Helium and Neutron Irradiated Molybdenum. Fusion Science and Technology 2017. [DOI: 10.1080/15361055.2016.1273699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- C. N. Taylor
- Idaho National Laboratory, Fusion Safety Program , Idaho Falls, Idaho 83415
| | - Y. Yamauchi
- Hokkaido University , Department of Nuclear Engineering, Sapporo, Japan
| | - M. Shimada
- Idaho National Laboratory, Fusion Safety Program , Idaho Falls, Idaho 83415
| | - Y. Oya
- Shizuoka University, Radioscience Research Laboratory , Faculty of Science, Shizuoka, Japan
| | - Y. Hatano
- University of Toyama, Hydrogen Isotope Research Center , Toyama 930-8555, Japan
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Safi S, Yamauchi Y, Jünger S, Stamova S, Rathinasamy A, Warth A, Beckhove P, Hoffmann H, Dienemann H. Nachweis und Charakterisierung von Gedächtnis-T-Zellen im Blut und Knochenmark von Lungenkarzinompatienten. Zentralbl Chir 2015. [DOI: 10.1055/s-0035-1559974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hasegawa W, Yamauchi Y, Yasunaga H, Sunohara M, Jo T, Matsui H, Fushimi K, Takami K, Nagase T. Factors that predict in-hospital mortality in eosinophilic granulomatosis with polyangiitis. Allergy 2015; 70:585-90. [PMID: 25703656 DOI: 10.1111/all.12597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare systemic small-vessel vasculitis associated with asthma, eosinophilia, and necrotizing vasculitis. EGPA is potentially life-threatening and often involves peripheral neuropathies, peptic ulcers, cerebral vessel disease, and cardiovascular disease. However, there is limited understanding of the prognostics factors for patients with EGPA. We investigated the clinical features and factors affecting patients' in-hospital mortality, using a national inpatient database in Japan. METHODS We retrospectively collected data of EGPA patients who required hospitalization between July 2010 and March 2013, using the Diagnosis Procedure Combination database. We evaluated EGPA patients' characteristics and performed multivariate logistic regression analyses to assess the factors associated with in-hospital mortality. RESULTS A total of 2195 EGPA patients were identified. The mean age was 61.9 years, 42.1% (924/2195) were male, and 41.6% (914/2195) had emergent admission. In-hospital deaths occurred in 97/2195 patients (4.4%). Higher in-hospital mortality was associated with age older than 65 years, disturbance of consciousness on admission, unscheduled admission, respiratory disease, cardio-cerebrovascular disease, renal disease, sepsis, and malignant disease on admission. Lower mortality was associated with female gender and peripheral neuropathies. CONCLUSIONS Our study revealed the clinical features of EGPA patients who required hospitalization and the factors associated with their mortality. These results may be useful for physicians when assessing disease severity or treatments for hospitalized EGPA patients.
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Affiliation(s)
- W. Hasegawa
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Y. Yamauchi
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
- Division for Health Service Promotion; The University of Tokyo; Tokyo Japan
| | - H. Yasunaga
- Department of Clinical Epidemiology and Health Economics; School of Public Health; The University of Tokyo; Tokyo Japan
| | - M. Sunohara
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - T. Jo
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
- Division for Health Service Promotion; The University of Tokyo; Tokyo Japan
| | - H. Matsui
- Department of Clinical Epidemiology and Health Economics; School of Public Health; The University of Tokyo; Tokyo Japan
| | - K. Fushimi
- Department of Health Policy and Informatics; Tokyo Medical and Dental University Graduate School of Medicine; Tokyo Japan
| | - K. Takami
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - T. Nagase
- Department of Respiratory Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
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Shiraki T, Iida O, Takahara M, Soga Y, Yamauchi Y, Hirano K, Kawasaki D, Fujihara M, Utsunomiya M, Tazaki J, Yamaoka T, Shintani Y, Suematsu N, Suzuki K, Miyashita Y, Tsuchiya T, Uematsu M. Predictors of Delayed Wound Healing after Endovascular Therapy of Isolated Infrapopliteal Lesions Underlying Critical Limb Ischemia in Patients with High Prevalence of Diabetes Mellitus and Hemodialysis. Eur J Vasc Endovasc Surg 2015; 49:565-73. [DOI: 10.1016/j.ejvs.2015.01.017] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 01/28/2015] [Indexed: 01/30/2023]
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Abstract
Spin polarization of the Fe3O4(100) surface is enhanced by B adsorption through the opening of the spin-up band gap.
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Affiliation(s)
- X. Sun
- Key Laboratory of Strongly-Coupled Quantum Matter Physics
- Chinese Academy of Sciences
- School of Physical Sciences
- University of Science and Technology of China
- Hefei
| | - A. Pratt
- National Institute for Materials Science
- Tsukuba
- Japan
- Department of Physics
- University of York
| | - Y. Yamauchi
- National Institute for Materials Science
- Tsukuba
- Japan
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Kawashima Y, Nagai T, Yamauchi Y. Uniformity perception for stimulus with luminance gradient. J Vis 2014. [DOI: 10.1167/14.15.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Comish PB, Liang LY, Yamauchi Y, Weng CC, Shetty G, Naff KA, Ward MA, Meistrich ML. Increasing testicular temperature by exposure to elevated ambient temperatures restores spermatogenesis in adult Utp14b (jsd) mutant (jsd) mice. Andrology 2014; 3:376-84. [PMID: 25303716 DOI: 10.1111/andr.287] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 08/19/2014] [Accepted: 09/10/2014] [Indexed: 11/30/2022]
Abstract
Because mutations in the human UTP14C gene are associated with male infertility, we sought to develop a method for fertility restoration in azoospermic mice with a mutation in the orthologous Utp14b(jsd) (jsd) gene that have spermatogonial arrest. The method is based on our observation that elevation of testicular temperatures restores spermatogonial differentiation in jsd mutant mice. To non-surgically raise intrascrotal temperatures we placed these mice in incubators at different elevated ambient temperatures. Exposure of jsd/jsd mice to ambient temperatures of 34.5 °C or 35.5 °C for 24 days increased the proportion of tubules with spermatocytes from 0% in untreated controls to over 80%. As those higher temperatures interfere with spermatid differentiation, the mice were then transferred to incubators at 32-32.5 °C for the next 24 days. These environments allowed differentiation to progress, resulting in up to 42% of tubules having late spermatids and about half of the mutant mice having spermatozoa in testicular suspensions. When these spermatozoa were used in intracytoplasmic sperm injection, all gave rise to viable healthy offspring with normal weight gain and fertility. The successful restoration of fertility in Utp14b mutant mice suggests that transient testicular warming might also be useful for spermatogenesis recovery in infertile men with UTP14C gene mutations.
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Affiliation(s)
- P B Comish
- Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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Shinoda N, Yamauchi Y, Nobuta Y, Hino T. Effect of induced damage on hydrogen isotope retention of F82H with impurity layer. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.05.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yamauchi Y, Vernet N, Riel J, Burgoyne P, Ward M. Only three Y chromosome genes are enough for obtaining sperm functional in assisted fertilization and yielding live offspring in the mouse. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ruthig V, Yamauchi Y, Riel J, Mitchell M, Ward M. Overerexpression of X-linked Eif2s3x can substitute for the loss of Y-linked Eif2s3y and allows for spermatogonial proliferation and differentiation in the mouse. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.1198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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Ortega E, Ruthig V, Yamauchi Y, Ward M. Overexpression of Sox9 in absence of Sry supports spermatogenesis progression and male fertility in the mouse. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yamaguchi T, Yamauchi Y, Yamaguchi J, Hara K. Fractures of the pubic rami and sacrum identified after delivery. Int J Obstet Anesth 2014; 24:91-3. [PMID: 25499014 DOI: 10.1016/j.ijoa.2014.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 07/21/2014] [Accepted: 08/19/2014] [Indexed: 01/13/2023]
Affiliation(s)
- T Yamaguchi
- Department of Anesthesia, Tsushima Izuhara Hospital, Nagasaki, Japan.
| | - Y Yamauchi
- Department of Obstetrics and Gynecology, Tsushima Izuhara Hospital, Nagasaki, Japan
| | - J Yamaguchi
- Department of Obstetrics and Gynecology, Tsushima Izuhara Hospital, Nagasaki, Japan
| | - K Hara
- Department of Obstetrics and Gynecology, Tsushima Izuhara Hospital, Nagasaki, Japan
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Sun X, Wang B, Pratt A, Yamauchi Y. Magnetic moment enhancement and spin polarization switch of the manganese phthalocyanine molecule on an IrMn(100) surface. J Chem Phys 2014; 141:034703. [DOI: 10.1063/1.4889934] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- X. Sun
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - B. Wang
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - A. Pratt
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
- Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - Y. Yamauchi
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
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Wang ZP, Zhang JW, Zhang ZM, Ding ZJ, Yamauchi Y. Selective functionalization of silicon surface controlled by metastable helium atom beam for patterning chemisorbed monolayer molecular assemblies. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Z. P. Wang
- Center for Physics Experiments; University of Science and Technology of China; Hefei Anhui 230026 China
- National Institute for Materials Science; Ibaraki 305-0047 Japan
| | - J. W. Zhang
- Department of Physics; University of Science and Technology of China; Hefei Anhui 230026 China
- National Institute for Materials Science; Ibaraki 305-0047 Japan
| | - Z. M. Zhang
- Center for Physics Experiments; University of Science and Technology of China; Hefei Anhui 230026 China
| | - Z. J. Ding
- Department of Physics; University of Science and Technology of China; Hefei Anhui 230026 China
| | - Y. Yamauchi
- National Institute for Materials Science; Ibaraki 305-0047 Japan
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Pratt A, Graziosi P, Bergenti I, Prezioso M, Dediu A, Yamauchi Y. Ultrahigh vacuum and low-temperature cleaning of oxide surfaces using a low-concentration ozone beam. Rev Sci Instrum 2014; 85:075116. [PMID: 25085182 DOI: 10.1063/1.4890208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a novel method of delivering a low-concentration (<15%) ozone beam to an ultra-high vacuum environment for the purpose of cleaning and dosing experimental samples through oxidation processing. The system described is safe, low-cost, and practical and overcomes the limitations of ozone transport in the molecular flow environment of high or ultrahigh vacuum whilst circumventing the use of pure ozone gas which is potentially highly explosive. The effectiveness of this method in removing surface contamination is demonstrated through comparison of high-temperature annealing of a simple oxide (MgO) in ozone and oxygen environments as monitored using quadrupole mass spectroscopy and Auger electron spectroscopy. Additionally, we demonstrate the potential of ozone for obtaining clean complex oxide surfaces without the need for high-temperature annealing which may significantly alter surface structure.
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Affiliation(s)
- A Pratt
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - P Graziosi
- CNR - ISMN, Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati, v. Gobetti 101, 40129 Bologna, Italy
| | - I Bergenti
- CNR - ISMN, Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati, v. Gobetti 101, 40129 Bologna, Italy
| | - M Prezioso
- Department of Electrical and Computer Engineering, Harold Frank Hall, University of California, Santa Barbara, California 93106, USA
| | - A Dediu
- CNR - ISMN, Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati, v. Gobetti 101, 40129 Bologna, Italy
| | - Y Yamauchi
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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Yamauchi Y, Miyata N, Kojima H, Nagata M, Maniwa T, Takahashi S, Isaka M, Ohde Y. P-169 * SIGNIFICANCE OF THE PRESENCE OF MICROSCOPIC VASCULAR INVASION AFTER COMPLETE RESECTION OF NON-SMALL-CELL LUNG CANCER. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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