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Ii Y, Ishikawa H, Nishigaki A, Utsunomiya T, Nakamura N, Hirata Y, Matsuyama H, Kajikawa H, Matsuura K, Matsuda K, Shinohara M, Kishi S, Kogue R, Umino M, Maeda M, Tomimoto H, Shindo A. Superficial small cerebellar infarcts in cerebral amyloid angiopathy on 3 T MRI: A preliminary study. J Neurol Sci 2024; 459:122975. [PMID: 38527411 DOI: 10.1016/j.jns.2024.122975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/23/2024] [Accepted: 03/19/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND Strictly superficial cerebellar microbleeds and cerebellar superficial siderosis have been considered markers of advanced cerebral amyloid angiopathy (CAA), but there are few studies on cerebellar ischemic lesions in CAA. We investigated the presence of superficial small cerebellar infarct (SCI) ≤15 mm and its relation to magnetic resonance imaging (MRI) markers in patients with probable CAA. METHODS Eighty patients with probable CAA were retrospectively evaluated. The presence of superficial SCIs was examined, along with cerebellar microbleeds and cerebellar superficial siderosis, using 3-T MRI. Lobar cerebral microbleeds, cortical superficial siderosis (cSS), enlargement of the perivascular space in the centrum semiovale, and white matter hyperintensity were assessed and the total CAA-small vessel disease (SVD) score was calculated. RESULTS Nine of the 80 patients (11.3%) had a total of 16 superficial SCIs. By tentatively defining SCI <4 mm as cerebellar microinfarcts, 8 out of 16 (50%) superficial SCIs corresponded to cerebellar microinfarcts. The total CAA-SVD score was significantly higher in patients with superficial SCIs (p = 0.01). The prevalence of cSS (p = 0.018), cortical cerebral microinfarct (p = 0.034), and superficial cerebellar microbleeds (p = 0.006) was significantly higher in patients with superficial SCIs. The number of superficial cerebellar microbleeds was also significantly higher in patients with superficial SCIs (p = 0.001). CONCLUSIONS Our results suggest that in patients with CAA, superficial SCIs (including microinfarcts) on MRI may indicate more severe, advanced-stage CAA. These preliminary findings should be verified by larger prospective studies in the future.
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Affiliation(s)
- Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan; Department of Neuroimaging and Pathophysiology, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
| | - Hidehiro Ishikawa
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Akisato Nishigaki
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Takaya Utsunomiya
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Naoko Nakamura
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Hirofumi Matsuyama
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Hiroyuki Kajikawa
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Kana Matsuda
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Masaki Shinohara
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Seiya Kishi
- Department of Radiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Ryota Kogue
- Department of Radiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Maki Umino
- Department of Radiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Masayuki Maeda
- Department of Neuroradiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan
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Matsuda K, Shinohara M, Ii Y, Tabei KI, Ueda Y, Nakamura N, Hirata Y, Ishikawa H, Matsuyama H, Matsuura K, Satoh M, Maeda M, Momosaki R, Tomimoto H, Shindo A. Magnetic resonance imaging and neuropsychological findings for predicting of cognitive deterioration in memory clinic patients. Front Aging Neurosci 2023; 15:1155122. [PMID: 37600513 PMCID: PMC10435295 DOI: 10.3389/fnagi.2023.1155122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/29/2023] [Indexed: 08/22/2023] Open
Abstract
Objective The severity of cerebral small vessel disease (SVD) on magnetic resonance imaging (MRI) has been assessed using hypertensive arteriopathy SVD and cerebral amyloid angiopathy (CAA)-SVD scores. In addition, we reported the modified CAA-SVD score including cortical microinfarcts and posterior dominant white matter hyperintensity. Each SVD score has been associated with cognitive function, but the longitudinal changes remain unclear. Therefore, this study prospectively examined the prognostic value of each SVD score, imaging findings of cerebral SVD, and neuropsychological assessment. Methods This study included 29 patients diagnosed with mild cognitive impairment or mild dementia at memory clinic in our hospital, who underwent clinical dementia rating (CDR) and brain MRI (3D-fluid attenuated inversion recovery, 3D-double inversion recovery, and susceptibility-weighted imaging) at baseline and 1 year later. Each SVD score and neuropsychological tests including the Mini-Mental State Examination, Japanese Raven's Colored Progressive Matrices, Trail Making Test -A/-B, and the Rivermead Behavioral Memory Test were evaluated at baseline and 1 year later. Results Twenty patients had unchanged CDR (group A), while nine patients had worsened CDR (group B) after 1 year. At baseline, there was no significant difference in each SVD score; after 1 year, group B had significantly increased CAA-SVD and modified CAA-SVD scores. Group B also showed a significantly higher number of lobar microbleeds than group A at baseline. Furthermore, group B had significantly longer Japanese Raven's Colored Progressive Matrices and Trail Making test-A times at baseline. After 1 year, group B had significantly lower Mini-Mental State Examination, Japanese Raven's Colored Progressive Matrices, and Rivermead Behavioral Memory Test scores and significantly fewer word fluency (letters). Conclusion Patients with worsened CDR 1 year after had a higher number of lobar microbleeds and prolonged psychomotor speed at baseline. These findings may become predictors of cognitive deterioration in patients who visit memory clinics.
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Affiliation(s)
- Kana Matsuda
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masaki Shinohara
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ken-ichi Tabei
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yukito Ueda
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Naoko Nakamura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidehiro Ishikawa
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hirofumi Matsuyama
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Satoh
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Maeda
- Department of Neuroradiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ryo Momosaki
- Department of Rehabilitation Medicine, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akihiro Shindo
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
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3
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Shinohara M, Matsuda K, Ii Y, Tabei KI, Nakamura N, Hirata Y, Ishikawa H, Matsuyama H, Matsuura K, Maeda M, Tomimoto H, Shindo A. Association between behavioral and psychological symptoms and cerebral small vessel disease MRI findings in memory clinic patients. Front Aging Neurosci 2023; 15:1143834. [PMID: 37032819 PMCID: PMC10079999 DOI: 10.3389/fnagi.2023.1143834] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/08/2023] [Indexed: 04/11/2023] Open
Abstract
Objectives Cerebral small vessel disease (SVD) is commonly observed among elderly individuals with cognitive impairment and has been recognized as a vascular contributor to dementia and behavioral and psychological symptoms (BPS), however, the relationship between BPS and SVD burden remains unclear. Methods We prospectively recruited 42 patients with mild cognitive impairment (MCI) or mild dementia from the memory clinic in our hospital, who were assigned to either a clinical dementia rating (CDR) of 0.5 or 1.0, respectively. The presence of BPS was determined through interviews with caregivers. The patients underwent brain MRI and three types of SVD scores, total, cerebral amyloid angiopathy (CAA), and modified CAA, were assigned. Patients were also evaluated through various neuropsychological assessments. Results The CDR was significantly higher in patients with BPS (p = 0.001). The use of antihypertensive agents was significantly higher in patients without BPS (p = 0.038). The time taken to complete trail making test set-A was also significantly longer in patients with BPS (p = 0.037). There was no significant difference in total SVD and CAA-SVD score (p = 0.745, and 0.096) and the modified CAA-SVD score was significantly higher in patients with BPS (p = 0.046). In addition, the number of total CMBs and lobar CMBs was significantly higher in patients with BPS (p = 0.001 and 0.001). Receiver operating characteristic curves for BPS showed that for modified CAA-SVD, a cutoff score of 3.5 showed 46.7% sensitivity and 81.5% specificity. Meanwhile, for the total number of cerebral microbleeds (CMBs), a cut-off score of 2.5 showed 80.0% sensitivity and 77.8% specificity and for the number of lobar CMBs, a cut-off score of 2.5 showed 73.3% sensitivity and 77.8% specificity. Conclusion Overall, patients with BPS showed worse CDRs, reduced psychomotor speed, higher modified CAA-SVD scores, larger numbers of total and lobar CMBs. We propose that severe modified CAA scores and higher numbers of total and lobar CMBs are potential risk factors for BPS in patients with mild dementia or MCI. Therefore, by preventing these MRI lesions, the risk of BPS may be mitigated.
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Affiliation(s)
- Masaki Shinohara
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Kana Matsuda
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ken-ichi Tabei
- School of Industrial Technology, Advanced Institute of Industrial Technology, Tokyo Metropolitan Public University Corporation, Tokyo, Japan
| | - Naoko Nakamura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidehiro Ishikawa
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hirofumi Matsuyama
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Maeda
- Department of Neuroradiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
- *Correspondence: Akihiro Shindo,
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Ueshima E, Sofue K, Takaki H, Hirata Y, Kodama H, Hamada M, Matsushiro K, Sasaki K, Gentsu T, Okada T, Yamaguchi M, Yamakado K, Sugimoto K, Murakami T. Abstract No. 359 Embolization induced tumor-associated macrophage polarization in tumor immune microenvironment can be reprogrammed by lenvatinib in a rat hepatoma model. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.440] [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: 10/18/2022] Open
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Hirata Y, Kato N, Muraga K, Shindo A, Nakamura N, Matsuura K, Ii Y, Shiga M, Tabei KI, Satoh M, Fukuma T, Kagawa Y, Fujita S, Kogue R, Umino M, Maeda M, Sakuma H, Dohi K, Tomimoto H. Cerebral Microbleeds With Atrial Fibrillation After Ablation Therapy. Front Cell Neurosci 2022; 16:818288. [PMID: 35237131 PMCID: PMC8884243 DOI: 10.3389/fncel.2022.818288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/07/2022] [Indexed: 11/17/2022] Open
Abstract
Background The prevalence of cerebral microbleeds (CMBs) is significantly higher in patients with atrial fibrillation (AF) than in those without AF. CMBs in patients with AF have been reported to be primarily of the lobar type, but the exact cause of this remains unknown. We investigated the possibility that hemorrhagic transformation of embolic microinfarction can account for de novo lobar CMBs. Methods A total of 101 patients who underwent ablation therapy for AF were prospectively registered, and 72 patients completed the assessment with MRI 6 months after catheter ablation. Brain MRI, including diffusion-weighted imaging (DWI) and susceptibility-weighted imaging (SWI), were examined at 1–3 days (baseline) and 6 months after catheter ablation. We quantitatively evaluated the spatial and temporal distribution of embolic microinfarctions and de novo CMBs. Results Of the 101 patients, 68 were enrolled in this study. Fifty-nine patients (86.8%) showed embolic microinfarctions on baseline DWI immediately after catheter ablation. There were 137 CMBs in SWI, and 96 CMBs were of the lobar type. Six months later, there were 208 CMBs, including 71 de novo CMBs, and 60 of 71 (84.5%) were of the lobar type. Of the 71 de novo CMBs, 56 (78.9%) corresponded to the location of previous embolic microinfarctions found on baseline DWI. The platelet count was significantly lower and hematocrit/hemoglobin and Fazekas score were higher in the group with de novo CMBs than in the group without de novo CMBs. Conclusion De novo CMBs frequently appeared after catheter ablation therapy. Our results suggest that embolic microinfarction can cause lobar CMBs.
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Affiliation(s)
- Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Natsuko Kato
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Kanako Muraga
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Neurology, Nippon Medical School Musashi Kosugi Hospital, Kanagawa, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- *Correspondence: Akihiro Shindo,
| | - Naoko Nakamura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Mariko Shiga
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ken-ichi Tabei
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Satoh
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
- Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Tomoyuki Fukuma
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yoshihiko Kagawa
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Satoshi Fujita
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ryota Kogue
- Department of Radiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Maki Umino
- Department of Radiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Maeda
- Department of Neuroradiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hajime Sakuma
- Department of Radiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Kaoru Dohi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
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Takahashi T, Kusunose K, Hayashi S, Yamaguchi N, Morita S, Hirata Y, Nishio S, Okushi Y, Seno H, Saijo Y, Yamada H, Sata M. A preliminary study of the safety and effectiveness of isoproterenol loading transesophageal echocardiography in atrial fibrillation. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.018] [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
In patients with sludge or severe spontaneous echo contrast (SEC) in the left atrial appendage (LAA), isoproterenol loading transesophageal echocardiography (ISP-TEE) has been reported to check the presence of thrombus in the LAA, as the sludge or severe SEC disappears (Figure 1).
Purpose
The aim of this study was to assess the safety of ISP-TEE for the identification of LAA thrombus and the hemodynamic changes in the LAA caused by ISP loading.
Methods
We prospectively enrolled 25 patients with atrial fibrillation (AF) and sludge or SEC in the LAA who underwent ISP-TEE from April 2020 to July 2021. ISP was administered intravenously to achieve the target heart rate (HR) defined as follows: Max HR [beats per minutes: bpm] = 220 – age (years), Target HR [bpm] = Max HR × 0.8. Patients with tachycardia exceeding Max HR before ISP administration, hemodynamic instability, and other contraindications to ISP were excluded from the study. To assess the safety of ISP-TEE, we evaluated patients’ condition, changes in systolic blood pressure (sBP) and HR before and after ISP loading. We also assessed the presence or absence of worsening heart failure, new arrhythmias other than atrial fibrillation, and cerebral infarction or transient ischemic attack during the examination, and after 24 hours. Hemodynamic evaluation was performed using LAA blood flow velocity, LAA tissue Doppler imaging (TDI) velocity, and LAA volume fraction (LAAVF) defined as follows: LAAVF (%) = (Max LAA volume – Min LAA volume) / Max LAA volume × 100. Quantification of LAA volume was performed using the stacked-contour method of a 3-dimensional TEE full-volume acquisition.
Results
Among 25 patients, 13 patients had sludge or grade3 SEC, 7 patients had grade2 SEC, 5 patients had grade1 SEC. HR after ISP loading was significantly higher than before loading, but sBP did not change significantly before and after ISP loading. No complications due to ISP loading were observed during examination and after 24 hours. After ISP loading, there were 18 patients with grade 1 SEC or no SEC (classified as Group1), 7 patients had residual sludge or grade 2 to 3 SEC (classified as Group2). The differences in LAA blood flow velocity between before and after ISP loading was faster in Group1 than in Group2: 13.0 ± 10.5 vs 2.6 ± 4.2. p = 0.019. The differences in TDI velocity was also faster in Group1 than in Group2: 1.46 ± 1.14 vs 0.19 ± 0.50, p = 0.010. The differences in LAAVF was higher in Group1 than in Group2: 13.7 ± 10.3 vs 2.2 ± 2.0, p = 0.009.
Conclusions
In our study, no complications were observed in ISP-TEE for the identification of LAA thrombus. Patients with grade 1 SEC or no SEC, the LAA function was increased by ISP loading. These results may provide insights into the mechanisms of ISP loading on SEC in the LAA. Abstract Figure.
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Affiliation(s)
- T Takahashi
- Tokushima University Hospital, Tokushima, Japan
| | - K Kusunose
- Tokushima University Hospital, Tokushima, Japan
| | - S Hayashi
- Tokushima University Hospital, Tokushima, Japan
| | - N Yamaguchi
- Tokushima University Hospital, Tokushima, Japan
| | - S Morita
- Tokushima University Hospital, Tokushima, Japan
| | - Y Hirata
- Tokushima University Hospital, Tokushima, Japan
| | - S Nishio
- Tokushima University Hospital, Tokushima, Japan
| | - Y Okushi
- Tokushima University Hospital, Tokushima, Japan
| | - H Seno
- Tokushima University Hospital, Tokushima, Japan
| | - Y Saijo
- Tokushima University Hospital, Tokushima, Japan
| | - H Yamada
- Tokushima University Hospital, Tokushima, Japan
| | - M Sata
- Tokushima University Hospital, Tokushima, Japan
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7
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Nishiguchi Y, Matsuura K, Hirata Y, Mizutani A, Katoh N, Ishikawa H, Miyashita K, Utsunomiya T, Kajikawa H, Nishikawa H, Araki T, Shindo A, Tomimoto H. Relationship of brain edema after deep brain stimulation surgery with motor and cognitive function. Heliyon 2022; 8:e08900. [PMID: 35265762 PMCID: PMC8899698 DOI: 10.1016/j.heliyon.2022.e08900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/21/2021] [Accepted: 01/31/2022] [Indexed: 10/27/2022] Open
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8
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Kato N, Muraga K, Hirata Y, Shindo A, Matsuura K, Ii Y, Shiga M, Tabei KI, Satoh M, Fujita S, Fukuma T, Kagawa Y, Fujii E, Umino M, Maeda M, Sakuma H, Ito M, Tomimoto H. Brain magnetic resonance imaging and cognitive alterations after ablation in patients with atrial fibrillation. Sci Rep 2021; 11:18995. [PMID: 34556757 PMCID: PMC8460624 DOI: 10.1038/s41598-021-98484-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/08/2021] [Indexed: 11/24/2022] Open
Abstract
Catheter ablation is an important non-pharmacological intervention for atrial fibrillation (AF), but its effect on the incidence of asymptomatic cerebral emboli and long-term effects on cognitive function remain unknown. We prospectively enrolled 101 patients who underwent AF ablation. Brain magnetic resonance imaging (MRI) (72 patients) and neuropsychological assessments (66 patients) were performed 1–3 days (baseline) and 6 months after ablation. Immediately after ablation, diffusion-weighted MRI and 3-dimensional double inversion recovery (3D-DIR) detected embolic microinfarctions in 63 patients (87.5%) and 62 patients (86.1%), respectively. After 6 months, DIR lesions disappeared in 41 patients. Microbleeds (MBs) increased by 17%, and 65% of the de novo MBs were exactly at the same location as the microinfarctions. Average Mini-Mental State Examination scores improved from 27.9 ± 2.4 to 28.5 ± 1.7 (p = 0.037), and detailed neuropsychological assessment scores showed improvement in memory, constructional, and frontal lobe functions. Ejection fraction, left atrial volume index and brain natriuretic peptide level improved from baseline to 3–6 months after ablation. Despite incidental microemboli, cognitive function was preserved 6 months after ablation.
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Affiliation(s)
- Natsuko Kato
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan. .,Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan.
| | - Kanako Muraga
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan.,Department of Neurologic Science, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan
| | - Mariko Shiga
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan.,Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ken-Ichi Tabei
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan.,Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Satoh
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan.,Department of Dementia Prevention and Therapeutics, Mie University Graduate School of Medicine, Tsu, Japan
| | - Satoshi Fujita
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Tomoyuki Fukuma
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yoshihiko Kagawa
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Eitaro Fujii
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Maki Umino
- Department of Radiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masayuki Maeda
- Department of Neuroradiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hajime Sakuma
- Department of Radiology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masaaki Ito
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, 2-174, Edobashi, Tsu, Mie, Japan
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9
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Hirata Y, Kusunose K, Yamaguchi N, Morita S, Nishio S, Okushi Y, Takahashi T, Yamada H, Tsuji T, Kotoku J, Sata M. Deep learning for screening of pulmonary hypertension using standard chest X-ray. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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
Early detection of pulmonary hypertension (PH) is crucial to ensure that patients receive timely treatment for the progressive clinical course. The chest X-ray (CXR), a routine method at hospitals, has recommended in order to reveal features supportive of a diagnosis of PH. However, it is well known that the sensitivity and specificity are low.
Purpose
We tested the hypothesis that application of artificial intelligence (AI) to the CXR could identify PH.
Methods
We retrospectively enrolled 900 data with paired CXR and right heart catheter (RHC), including the pulmonary artery pressure, from October 2009 to December 2018. We trained a convolutional neural network to identify patients with PH as actual value of pulmonary artery pressure, using the CXR alone (Figure). The diagnosis of PH was performed using hemodynamic measurements according to the most recent World Symposium standards: mean PAP ≥20 mmHg. We have compared the area under the curve (AUC) by human observers, measurements of CXR images, and AI for detection of PH.
Results
Subjects were divided into two groups with PH (439 patients; mean age, 66±14 years; 233 male) and without PH (461 patients; mean age, 68±12 years; 278 male). In an independent set, AI was the highest diagnostic ability for detection of PH (AUC: 0.71). The AUC by the AI algorithm was significantly higher than the AUC by measurements of CXR images and human observers (0.71 vs. 0.60 and vs. 0.63, all compared p<0.05).
Conclusion
Applying AI to the CXR (a classical, universal, low-cost test) permits the CXR images to serve as a powerful tool to screen for PH.
Neural network
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Hirata
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - K Kusunose
- Tokushima University Hospital, Department of Cardiovascular Medicine, Tokushima, Japan
| | - N Yamaguchi
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - S Morita
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - S Nishio
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - Y Okushi
- Tokushima University Hospital, Department of Cardiovascular Medicine, Tokushima, Japan
| | - T Takahashi
- Tokushima University Hospital, Department of Cardiovascular Medicine, Tokushima, Japan
| | - H Yamada
- Tokushima University Graduate School of Biomedical Sciences, Department of Community Medicine for Cardiology, Tokushima, Japan
| | - T Tsuji
- Teikyo University, Department of Radiological Technology, Graduate School of Medical Care and Technology, Tokyo, Japan
| | - J Kotoku
- Teikyo University, Department of Radiological Technology, Graduate School of Medical Care and Technology, Tokyo, Japan
| | - M Sata
- Tokushima University Hospital, Department of Cardiovascular Medicine, Tokushima, Japan
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10
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Songthong A, Ito Y, Katoh N, Tamura M, Dekura Y, Toramatsu C, Srimaneekarn N, Haytor A, Khorprasert C, Amornwichet N, Alisanant P, Hirata Y, Shirato H, Shimizu S, Kobashi K. PD-0426: NTCP model for radiation-induced liver disease: Integration of clinical and dosimetric factors. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00448-5] [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: 11/16/2022]
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11
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Daida K, Nishioka K, Li Y, Yoshino H, Shimada T, Dougu N, Nakatsuji Y, Ohara S, Hashimoto T, Okiyama R, Yokochi F, Suzuki C, Tomiyama M, Kimura K, Ueda N, Tanaka F, Yamada H, Fujioka S, Tsuboi Y, Uozumi T, Takei T, Matsuzaki S, Shibasaki M, Kashihara K, Kurisaki R, Yamashita T, Fujita N, Hirata Y, Ii Y, Wada C, Eura N, Sugie K, Higuchi Y, Kojima F, Imai H, Noda K, Shimo Y, Funayama M, Hattori N. PLA2G6 variants associated with the number of affected alleles in Parkinson's disease in Japan. Neurobiol Aging 2020; 97:147.e1-147.e9. [PMID: 32771225 DOI: 10.1016/j.neurobiolaging.2020.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 05/14/2020] [Revised: 06/26/2020] [Accepted: 07/04/2020] [Indexed: 12/18/2022]
Abstract
This study aimed to evaluate genotype-phenotype correlations of Parkinson's disease (PD) patients with phospholipase A2 group V (PLA2G6) variants. We analyzed the DNA of 798 patients with PD, including 78 PD patients reported previously, and 336 in-house controls. We screened the exons and exon-intron boundaries of PLA2G6 using the Ion Torrent system and Sanger method. We identified 21 patients with 18 rare variants, such that 1, 9, and 11 patients were homozygous, heterozygous, and compound heterozygous, respectively, with respect to PLA2G6 variants. The allele frequency was approximately equal between patients with familial PD and those with sporadic PD. The PLA2G6 variants detected frequently were identified in the early-onset sporadic PD group. Patients who were homozygous for a variant showed more severe symptoms than those who were heterozygous for the variant. The most common variant was p.R635Q in our cohort, which was considered a risk variant for PD. Thus, the variants of PLA2G6 may play a role in familial PD and early-onset sporadic PD.
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Affiliation(s)
- Kensuke Daida
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kenya Nishioka
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan.
| | - Yuanzhe Li
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroyo Yoshino
- Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Tomoyo Shimada
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Nobuhiro Dougu
- Department of Neurology, Toyama University Hospital, Toyama, Japan
| | - Yuji Nakatsuji
- Department of Neurology, Toyama University Hospital, Toyama, Japan
| | - Shinji Ohara
- Department of Neurology, Iida Hospital, Iida, Nagano, Japan
| | | | - Ryoichi Okiyama
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Fusako Yokochi
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Chieko Suzuki
- Department of Neurology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - Masahiko Tomiyama
- Department of Neurology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - Katsuo Kimura
- Department of Neurology, Yokohama City University Medical Center, Yokohama, Japan
| | - Naohisa Ueda
- Department of Neurology, Yokohama City University Medical Center, Yokohama, Japan
| | - Fumiaki Tanaka
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | | | - Shinsuke Fujioka
- Department of Neurology, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Yoshio Tsuboi
- Department of Neurology, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Takenori Uozumi
- Department of Neurology, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Takanobu Takei
- Department of Neurology, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
| | - Shigeru Matsuzaki
- Shiga Prefectural Mental Health Medical Center, Kusatsu, Shiga, Japan
| | | | | | - Ryoichi Kurisaki
- Department of Neurology, National Hospital Organization Kumamoto Saishun Medical Center, Koshi, Kumamoto, Japan
| | | | - Nobuya Fujita
- Department of Neurology, Nagaoka Red Cross Hospital, Nagaoka, Niigata, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Chizu Wada
- Department of Neurology, National Hospital Organization Akita National Hospital, Yurihonjo, Akita, Japan
| | - Nobuyuki Eura
- Department of Neurology, Nara Medical University School of Medicine, Kashihara, Nara, Japan
| | - Kazuma Sugie
- Department of Neurology, Nara Medical University School of Medicine, Kashihara, Nara, Japan
| | - Yujiro Higuchi
- Department of Neurology and Geriatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Kagoshima, Japan
| | - Fumikazu Kojima
- Department of Neurology and Geriatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Kagoshima, Japan
| | | | - Kazuyuki Noda
- Department of Neurology, Juntendo University Shizuoka Hospital, Izunokuni, Shizuoka, Japan
| | - Yasushi Shimo
- Department of Neurology, Juntendo University Nerima Hospital, Tokyo, Japan
| | - Manabu Funayama
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
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12
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Takaki H, Hirata Y, Ueshima E, Kodama H, Matsumoto S, Wada R, Suzuki H, Nakasho K, Yamakado K. Abstract No. 426 Hepatic artery embolization enhance the expression of programmed cell death 1 ligand 1: an in vivo experimental study with an orthotopic rat hepatoma model. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.487] [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] Open
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13
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Yamaguchi N, Kusunose K, Haga A, Morita S, Hirata Y, Torii Y, Nishio S, Ookushi Y, Takahashi T, Yamada N, Yamada H, Sata M. 540 Assessment of left ventricular ejection fraction from echocardiographic images using machine learning algorithm. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.274] [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: 11/14/2022] Open
Abstract
Abstract
Background
Precise and reliable echocardiographic assessment of LVEF is needed for clinical decision-making. LVEF is currently determined through an observer dependent process that requires manual tracing. To remove this manual tracing step, which is both time-consuming and user dependent, automatic computer aided diagnosis systems may be useful in the clinical setting.
Purpose
The aim of this study was to evaluate whether a 3-dimensional convolutional neural networks (3DCNN) could estimate left ventricular ejection fraction (LVEF) and differentiate types of heart failure (preserved EF/reduced EF) using conventional 2-dimensional echocardiographic images.
Methods
We developed a deep learning model to automatically estimate LVEF from echocardiographic data. The 3DCNN model was trained on a dataset of 340 patients. The dataset creation consisted of three main steps: firstly, for each exam, cine-loops showing the parasternal and apical views were manually selected; then, 10 sequential frames were extracted from each 1 beat and; finally, each frame was pre-processed to fit the learning model. Each patient has 2 views, resulting in a total of 6,800 images. Reference LVEF measurement was calculated by two highly experienced readers in each case.
Results
A good correlation was found between estimated LVEF based on apical 2 and 4 chamber views and reference LVEF (r =0.88, p <0.001) (Figure). For classification of heart failure types based on LVEF (LVEF ≥50% or <50%), the area under the receiver-operating characteristic curve by the 3DCNN algorithm was over 0.95.
Conclusions
The 3DCNN can be applied to estimate and classify the LVEF in the clinical setting. Furthermore, this work will serve as a driver for future research using million image databases.
Abstract 540 Figure.
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Affiliation(s)
- N Yamaguchi
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - K Kusunose
- Tokushima University Hospital, Cardiovascular Medicine, Tokushima, Japan
| | - A Haga
- Graduate School of Biomedical Sciences, Radiology and Radiation Oncology, Tokushima, Japan
| | - S Morita
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - Y Hirata
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - Y Torii
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - S Nishio
- Tokushima University Hospital, Ultrasound Examination Center, Tokushima, Japan
| | - Y Ookushi
- Tokushima University Hospital, Cardiovascular Medicine, Tokushima, Japan
| | - T Takahashi
- Tokushima University Hospital, Cardiovascular Medicine, Tokushima, Japan
| | - N Yamada
- Tokushima University Hospital, Cardiovascular Medicine, Tokushima, Japan
| | - H Yamada
- Tokushima University Graduate School of Biomedical Sciences, Community Medicine for Cardiology, Tokushima, Japan
| | - M Sata
- Tokushima University Hospital, Cardiovascular Medicine, Tokushima, Japan
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Takahashi T, Kusunose K, Hayashi S, Morita S, Torii Y, Hirata Y, Yamao M, Nishio S, Yuichiro O, Abe M, Yamada N, Yamada H, Wakatsuki T, Sata M. P1526 Updated prevalence of lambls excrescences using the latest three-dimensional transesophageal echocardiography. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.948] [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
Lambl’s excrescences (LEs), filiform strands that occur at sites of cardiac valves, have been suggested the cause cryptogenic stroke. The diagnosis is primarily based upon the echocardiographic study, but conventional two-dimensional transthoracic echocardiography has limitation to detect such as small strands. Latest three dimensional-transesophageal echocardiography (3D-TEE) have high-resolution images with many slices, so small structures are able to be clearly visible and detected.
Purpose
The aim of this study was to assess the prevalence of LEs using the latest 3D-TEE images.
Methods
We retrospectively reviewed consecutive 140 patients who underwent 3D-TEE from November 2018 to May 2019. Forty-seven patients were excluded due to unmeasurable, such as mitral valve prolapse, severe aortic stenosis, prosthetic valves and poor-quality images. We carefully evaluated the mitral and aortic valve leaflets in order to find mobile string structure (diameter <1 mm and length 1–20 mm) in each cardiac cycle. Total analyzed images were over 50 slices per one patient.
Results
Among 93 patients, 83 patients (89%) was detected the presence of LEs. No difference in age and gender were found between patients with LEs and patients without LEs. Of the total 83 patients, there were 35 patients with strands on mitral valve, 32 patients with strands on aortic valve, and 16 patients with strands on both valves. Distribution of LEs at each valve leaflet were shown in Figure. Right coronary cusp of aortic valve (42%) and P2 of mitral valve (35%) were high prevalence among leaflets.
Conclusions
3D-TEE provides an update prevalence of LEs. The prevalence of LEs might be potentially high in the real world.
Abstract P1526 Figure.
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Affiliation(s)
- T Takahashi
- Tokushima University Hospital, Tokushima, Japan
| | - K Kusunose
- Tokushima University Hospital, Tokushima, Japan
| | - S Hayashi
- Tokushima University Hospital, Tokushima, Japan
| | - S Morita
- Tokushima University Hospital, Tokushima, Japan
| | - Y Torii
- Tokushima University Hospital, Tokushima, Japan
| | - Y Hirata
- Tokushima University Hospital, Tokushima, Japan
| | - M Yamao
- Tokushima University Hospital, Tokushima, Japan
| | - S Nishio
- Tokushima University Hospital, Tokushima, Japan
| | - O Yuichiro
- Tokushima University Hospital, Tokushima, Japan
| | - M Abe
- Tokushima University Hospital, Tokushima, Japan
| | - N Yamada
- Tokushima University Hospital, Tokushima, Japan
| | - H Yamada
- Tokushima University Hospital, Tokushima, Japan
| | - T Wakatsuki
- Tokushima University Hospital, Tokushima, Japan
| | - M Sata
- Tokushima University Hospital, Tokushima, Japan
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15
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Ishikawa H, Shindo A, Ii Y, Kishida D, Niwa A, Nishiguchi Y, Matsuura K, Kato N, Mizutani A, Tachibana K, Hirata Y, Matsuyama H, Ogawa-Ito A, Taniguchi A, Tomimoto H. MEFV gene mutations in neuro-Behçet's disease and neuro-Sweet disease. Ann Clin Transl Neurol 2019; 6:2595-2600. [PMID: 31682063 PMCID: PMC6917328 DOI: 10.1002/acn3.50937] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/28/2019] [Accepted: 10/14/2019] [Indexed: 01/06/2023] Open
Abstract
Mediterranean fever (MEFV) gene mutations are associated with familial Mediterranean fever (FMF). Recent studies have suggested that MEFV gene mutations may act as disease modifiers in neuro‐Behçet's (NBD) disease and neuro‐Sweet disease (NSD). We investigated MEFV genes and clinical features in 17 patients with NBD or NSD. MEFV gene mutations were frequently observed (70.6%). Headaches and exertional leg pain were associated with MEFV gene mutations (P < 0.05). Moreover, higher frequency of white matter lesions without sites predilection (P < 0.05) and non‐parenchymal lesions (P < 0.05) were also observed. MEFV gene mutations may be associated with particular findings and lesion sites.
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Affiliation(s)
- Hidehiro Ishikawa
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yuichiro Ii
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Dai Kishida
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Nagano, Japan
| | - Atsushi Niwa
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yamato Nishiguchi
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Keita Matsuura
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Natsuko Kato
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Akane Mizutani
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Kei Tachibana
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yoshinori Hirata
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Hirofumi Matsuyama
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Ai Ogawa-Ito
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Akira Taniguchi
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, Mie, Japan
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16
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Tamura A, Asahi M, Hirata Y, Shimada T, Ii Y, Kawamura K, Mezaki T, Matsuura K, Narita Y, Tomimoto H. P1-17-08. Clinical and neurophysiological analysis in two patients of facial onset sensory and motor neuronopathy (FOSMN syndrome). Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.06.183] [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: 10/26/2022]
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17
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Matsuyama H, Matsuura K, Ishikawa H, Hirata Y, Kato N, Niwa A, Narita Y, Tomimoto H. Proposition of zinc supplementation during levodopa-carbidopa intestinal gel treatment. Brain Behav 2018; 8:e01143. [PMID: 30358126 PMCID: PMC6305909 DOI: 10.1002/brb3.1143] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 09/26/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES Levodopa-carbidopa intestinal gel (LCIG) infusion is a useful therapy for the wearing-off phenomenon of advanced Parkinson's disease (PD) patients. Recently, we found three PD patients that may have had a zinc deficiency after the LCIG infusion, possibly due to the zinc-chelating action of levodopa. This study aims to evaluate changes in serum zinc levels in three patients that received LCIG treatment and to determine possible remedies for zinc deficiency during treatment. MATERIALS AND METHODS We performed a prospective blood analysis of serum zinc levels before, when possible, and after LCIG treatment in our three PD patients. RESULTS The serum zinc levels of the first patient before treatment and 4 months after beginning LCIG treatment were 69 and 58 μg/dl, respectively. For the second patient, serum zinc levels before treatment and two months after starting LCIG treatment were 87 and 46 μg/dl, respectively. The baseline serum zinc level for the third patient was not examined, but was 48 μg/dl 5 months after starting the LCIG infusion. CONCLUSIONS Levodopa-carbidopa intestinal gel infusion might have caused a zinc deficiency through levodopa zinc chelation. Zinc deficiency with LCIG infusion has not yet been reported, though preventing zinc deficiency may be an important factor in future LCIG treatment strategies.
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Affiliation(s)
- Hirofumi Matsuyama
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Keita Matsuura
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Hidehiro Ishikawa
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Yoshinori Hirata
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Natsuko Kato
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Atsushi Niwa
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Yugo Narita
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
| | - Hidekazu Tomimoto
- Department of NeurologyMie University Graduate School of MedicineTsuJapan
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18
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Mali V, Fukuda A, Shigeta T, Uchida H, Kanazawa H, Hirata Y, Rahayatri T, Chiaki B, Sasaki K, Kitamura M, Sakamoto S, Kasahara M. Mild to Moderate Intrapulmonary Shunting in Pediatric Liver Transplantation: Is Screening Necessary? Transplant Proc 2018; 50:3496-3500. [DOI: 10.1016/j.transproceed.2018.05.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/23/2018] [Indexed: 01/26/2023]
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19
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Kawano Y, Sanada Y, Urahashi T, Ihara Y, Okada N, Yamada N, Hirata Y, Katano T, Taniai N, Matsuda A, Miyashita M, Yoshida H, Mizuta K. Transition of Spleen Volume Long After Pediatric Living Donor Liver Transplantation for Biliary Atresia. Transplant Proc 2018; 50:2718-2722. [PMID: 30401384 DOI: 10.1016/j.transproceed.2018.03.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/02/2018] [Indexed: 01/10/2023]
Abstract
PURPOSE After undergoing the Kasai procedure for biliary atresia (BA), most patients develop severe splenomegaly that tends to be improved by liver transplantation. However, fluctuations in splenic volume long after transplantation remain to be elucidated. PATIENTS AND METHODS Seventy-one consecutive patients who had undergone pediatric living donor liver transplantation (LDLT) for BA were followed up in our outpatient clinic for 5 years. They were classified into 3 groups according to their clinical outcomes: a good course group (GC, n = 41) who were maintained on only 1 or without an immunosuppressant, a liver dysfunction group (LD, n = 18) who were maintained on 2 or 3 types of immunosuppressants, and a vascular complication group (VC, n = 11). Splenic and hepatic volumes were calculated by computed tomography in 464 examinations and the values compared before and after the treatment, especially in the VC group. RESULTS Splenic volume decreased exponentially in the GC group, with splenic volume to standard spleen volume ratio (SD) being 1.59 (0.33) 5 years after liver transplantation. Splenic volume to standard spleen volume ratios were greater in the VC and LD groups than in the GC group. Patients in the VC group with portal vein stenosis developed liver atrophy and splenomegaly, whereas those with hepatic vein stenosis developed hepatomegaly and splenomegaly. Interventional radiation therapy tended to improve the associated symptoms. CONCLUSIONS Fluctuations in splenic volume long after pediatric LDLT for BA may reflect various clinical conditions. Evaluation of both splenic and hepatic volumes can facilitate understanding clinical conditions following pediatric LDLT.
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Affiliation(s)
- Y Kawano
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Taniai
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - A Matsuda
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan
| | - M Miyashita
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan
| | - H Yoshida
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
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20
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Sakai K, Inoue M, Nishimura H, Mikami S, Kuwabara Y, Kojima A, Toda M, Kobayashi Y, Kikuchi S, Hirata Y, Kyoyama H, Moriyama G, Gemma A, Uematsu K. P2.06-31 Inhibition of Heat Shock Protein 70 Function Suppresses Proliferation in Mesothelioma Cells. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1286] [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: 10/28/2022]
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Maimaituxun G, Shimabukuro M, Fukuda D, Yagi S, Hirata Y, Iwase T, Matsuura T, Ise T, Kusunose K, Tobiume T, Yamaguchi K, Yamada H, Soeki T, Wakatsuki T, Sata M. 106Gender disparities of distribution of epicardial adipose tissue and its impact on coronary artery disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.106] [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: 11/14/2022] Open
Affiliation(s)
- G Maimaituxun
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - M Shimabukuro
- Fukushima Medical University, Department of Diabetes, Endocrinology and Metabolism, School of Medicine, Fukushima, Japan
| | - D Fukuda
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - S Yagi
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - Y Hirata
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Iwase
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Matsuura
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Ise
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - K Kusunose
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Tobiume
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - K Yamaguchi
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - H Yamada
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Soeki
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - T Wakatsuki
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
| | - M Sata
- Institute of Biomedical Sciences, Tokushima University Graduate School, Department of Cardiovascular Medicine, Tokushima City, Japan
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Kishimoto N, Mukai N, Honda Y, Hirata Y, Tanaka M, Momota Y. Simulation training for medical emergencies in the dental setting using an inexpensive software application. Eur J Dent Educ 2018; 22:e350-e357. [PMID: 29120509 DOI: 10.1111/eje.12301] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Every dental provider needs to be educated about medical emergencies to provide safe dental care. Simulation training is available with simulators such as advanced life support manikins and robot patients. However, the purchase and development costs of these simulators are high. We have developed a simulation training course on medical emergencies using an inexpensive software application. The purpose of this study was to evaluate the educational effectiveness of this course. MATERIALS AND METHODS Fifty-one dental providers participated in this study from December 2014 to March 2015. Medical simulation software was used to simulate a patient's vital signs. We evaluated participants' ability to diagnose and treat vasovagal syncope or anaphylaxis with an evaluation sheet and conducted a questionnaire before and after the scenario-based simulation training. RESULTS The median evaluation sheet score for vasovagal syncope increased significantly from 7/9 before to 9/9 after simulation training. The median score for anaphylaxis also increased significantly from 8/12 to 12/12 (P < .01). For the item "I can treat vasovagal syncope/anaphylaxis adequately," the percentage responding "Strongly agree" or "Agree" increased from 14% to 56% for vasovagal syncope and from 6% to 42% for anaphylaxis with simulation training. CONCLUSIONS This simulation course improved participants' ability to diagnose and treat medical emergencies and improved their confidence. This course can be offered inexpensively using a software application.
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Affiliation(s)
- N Kishimoto
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | - N Mukai
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University, Osaka, Japan
| | - Y Honda
- Institute of Dental Research, Osaka Dental University, Osaka, Japan
| | - Y Hirata
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | - M Tanaka
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University, Osaka, Japan
| | - Y Momota
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
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23
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Saijo Y, Kusunose K, Bando M, Seno H, Zheng R, Nishio S, Hirata Y, Tori Y, Amano R, Yamada H, Sata M. 4923Localization of myocardial injury in anthracycline-induced cardiotoxicity: evaluation using two-dimensional speckle tracking echocardiography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.4923] [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: 11/14/2022] Open
Affiliation(s)
- Y Saijo
- Tokushima University Hospital, Cardiology, Tokushima, Japan
| | - K Kusunose
- Tokushima University Hospital, Cardiology, Tokushima, Japan
| | - M Bando
- Tokushima University Hospital, Community Medicine for Cardiology, Tokushima, Japan
| | - H Seno
- Tokushima University Hospital, Cardiology, Tokushima, Japan
| | - R Zheng
- Tokushima University Hospital, The Post-graduate Education Center, Tokushima, Japan
| | - S Nishio
- Tokushima University Hospital, Ultrasound Center, Tokushima, Japan
| | - Y Hirata
- Tokushima University Hospital, Ultrasound Center, Tokushima, Japan
| | - Y Tori
- Tokushima University Hospital, Ultrasound Center, Tokushima, Japan
| | - R Amano
- Tokushima University Hospital, Ultrasound Center, Tokushima, Japan
| | - H Yamada
- Tokushima University Hospital, Community Medicine for Cardiology, Tokushima, Japan
| | - M Sata
- Tokushima University Hospital, Cardiology, Tokushima, Japan
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Horio M, Krockenberger Y, Yamamoto K, Yokoyama Y, Takubo K, Hirata Y, Sakamoto S, Koshiishi K, Yasui A, Ikenaga E, Shin S, Yamamoto H, Wadati H, Fujimori A. Electronic Structure of Ce-Doped and -Undoped Nd_{2}CuO_{4} Superconducting Thin Films Studied by Hard X-Ray Photoemission and Soft X-Ray Absorption Spectroscopy. Phys Rev Lett 2018; 120:257001. [PMID: 29979072 DOI: 10.1103/physrevlett.120.257001] [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] [Received: 10/25/2017] [Indexed: 06/08/2023]
Abstract
In order to realize superconductivity in cuprates with the T^{'}-type structure, not only chemical substitution (Ce doping) but also postgrowth reduction annealing is necessary. In the case of thin films, however, well-designed reduction annealing alone without Ce doping can induce superconductivity in the T^{'}-type cuprates. In order to unveil the origin of superconductivity in the Ce-undoped T^{'}-type cuprates, we have performed bulk-sensitive hard x-ray photoemission and soft x-ray absorption spectroscopy on superconducting and nonsuperconducting Nd_{2-x}Ce_{x}CuO_{4} (x=0, 0.15, and 0.19) thin films. By postgrowth annealing, core-level spectra exhibited dramatic changes, which we attributed to the enhancement of core-hole screening in the CuO_{2} plane and the shift of chemical potential along with changes in the band filling. The result suggests that the superconducting Nd_{2}CuO_{4} film is doped with electrons despite the absence of the Ce substitution.
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Affiliation(s)
- M Horio
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y Krockenberger
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
| | - K Yamamoto
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Y Yokoyama
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - K Takubo
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Y Hirata
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - S Sakamoto
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Koshiishi
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - A Yasui
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - E Ikenaga
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Shin
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - H Yamamoto
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
| | - H Wadati
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - A Fujimori
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Yamamoto S, Omi T, Akai H, Kubota Y, Takahashi Y, Suzuki Y, Hirata Y, Yamamoto K, Yukawa R, Horiba K, Yumoto H, Koyama T, Ohashi H, Owada S, Tono K, Yabashi M, Shigemasa E, Yamamoto S, Kotsugi M, Wadati H, Kumigashira H, Arima T, Shin S, Matsuda I. Element Selectivity in Second-Harmonic Generation of GaFeO_{3} by a Soft-X-Ray Free-Electron Laser. Phys Rev Lett 2018; 120:223902. [PMID: 29906133 DOI: 10.1103/physrevlett.120.223902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Indexed: 05/27/2023]
Abstract
Nonlinear optical frequency conversion has been challenged to move down to the extreme ultraviolet and x-ray region. However, the extremely low signals have allowed researchers to only perform transmission experiments of the gas phase or ultrathin films. Here, we report second harmonic generation (SHG) of the reflected beam of a soft x-ray free-electron laser from a solid, which is enhanced by the resonant effect. The observation revealed that the double resonance condition can be met by absorption edges for transition metal oxides in the soft x-ray range, and this suggests that the resonant SHG technique can be applicable to a wide range of materials. We discuss the possibility of element-selective SHG spectroscopy measurements in the soft x-ray range.
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Affiliation(s)
- Sh Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T Omi
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
| | - H Akai
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kubota
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Takahashi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Suzuki
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - Y Hirata
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - K Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Yukawa
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - K Horiba
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - H Yumoto
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - T Koyama
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - H Ohashi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Owada
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Tono
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - E Shigemasa
- UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
- Sokendai (the Graduate University for Advanced Studies), Okazaki 444- 8585, Japan
| | - S Yamamoto
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - M Kotsugi
- Tokyo University of Science, Katsushika 125-8585, Japan
| | - H Wadati
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - H Kumigashira
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan
| | - T Arima
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa 277-8561, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - S Shin
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - I Matsuda
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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26
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Yokoyama Y, Yamasaki Y, Taguchi M, Hirata Y, Takubo K, Miyawaki J, Harada Y, Asakura D, Fujioka J, Nakamura M, Daimon H, Kawasaki M, Tokura Y, Wadati H. Tensile-Strain-Dependent Spin States in Epitaxial LaCoO_{3} Thin Films. Phys Rev Lett 2018; 120:206402. [PMID: 29864291 DOI: 10.1103/physrevlett.120.206402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Indexed: 06/08/2023]
Abstract
The spin states of Co^{3+} ions in perovskite-type LaCoO_{3}, governed by the complex interplay between the electron-lattice interactions and the strong electron correlations, still remain controversial due to the lack of experimental techniques which can directly detect them. In this Letter, we revealed the tensile-strain dependence of spin states, i.e., the ratio of the high- and low-spin states, in epitaxial thin films and a bulk crystal of LaCoO_{3} via resonant inelastic soft x-ray scattering. A tensile strain as small as 1.0% was found to realize different spin states from that in the bulk.
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Affiliation(s)
- Y Yokoyama
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y Yamasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan
| | - M Taguchi
- Nara Institute of Science and Technology (NAIST), 8916-5, Takayama, Ikoma, Nara 630-0192, Japan
| | - Y Hirata
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - K Takubo
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - J Miyawaki
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - Y Harada
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - D Asakura
- Research Institute for Energy Conservation, National Institute of Advance Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba 305-8568, Japan
| | - J Fujioka
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
| | - M Nakamura
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - H Daimon
- Nara Institute of Science and Technology (NAIST), 8916-5, Takayama, Ikoma, Nara 630-0192, Japan
| | - M Kawasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Tokura
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - H Wadati
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
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27
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Iwanaga T, Tominaga M, Hirata Y, Matsuda H, Shimanuki T, Takamori K. 1055 Evaluation of film dressings for the prevention of intraepidermal nerve growth and alloknesis (touch-evoked itch) in murine dry skin models. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1068] [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: 10/17/2022]
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28
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Okada N, Sanada Y, Urahashi T, Ihara Y, Yamada N, Hirata Y, Katano T, Otomo S, Ushijima K, Mizuta K. Endotoxin Metabolism Reflects Hepatic Functional Reserve in End-Stage Liver Disease. Transplant Proc 2018; 50:1360-1364. [PMID: 29705277 DOI: 10.1016/j.transproceed.2018.01.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 12/29/2017] [Accepted: 01/23/2018] [Indexed: 01/29/2023]
Abstract
BACKGROUND The hepatic clearance of endotoxin (Et) may reflect hepatic functional reserve and ischemic injury to hepatocytes. Therefore, we examined the relationships between Et activity (EA) and the metrics Pediatric End-Stage Liver Disease (PELD)/Model of End-Stage Liver Disease (MELD) score and alanine transaminase (ALT) levels in the postoperative period. METHODS We performed 8 living-donor liver transplantations (LDLTs) for biliary atresia at our center from April 2012 to December 2012. EA was measured by means of an Et activity assay (EAA) in samples collected from a vein 1 day before LDLT, from the portal vein during the intraoperative anhepatic phase, from an artery 1 hour after reperfusion, from an artery on postoperative day (POD) 1, and from an artery or vein at PODs 7 and 14. RESULTS EAs generally remained at low levels. EA at the reperfusion period was significantly lowest. The correlation coefficient for the preoperative MELD/PELD score and the EAA was 0.837, and the corresponding P value was .009; thus, there was a significant relationship between the preoperative MELD/PELD score and the EAA. The correlation coefficients for ALT at POD 1 and EA during the anhepatic phase, at 1 hour after reperfusion, and at POD 1 were 0.64, 0.43, and 0.38, respectively, and the P values for these correlations were .08, .67, and .34. Thus, we observed that ALT and EA generally tended to be somewhat directly correlated, but no significant relationships between these 2 metrics were observed. CONCLUSIONS Endotoxin metabolism reflects the hepatic functional reserve capacity of end-stage liver disease.
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Affiliation(s)
- N Okada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Tochigi, Japan
| | - K Ushijima
- Department of Clinical Pharmacy, Jichi Medical University, Tochigi, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
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Takaki H, Hirata Y, Ueshima E, Kobayashi K, Kako Y, Taniguchi J, Yamakado K. Abstract No. 445 Hypoxic stress induces the overexpression of programmed death ligand 1 and chemokine ligand 17 on rat hepatoma cell lines. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.490] [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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30
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Ono M, Sawa Y, Fukushima N, Ichikawa H, Ueno M, Hirata Y, Sakamoto K, Suzuki T, Kaneko Y. Long-term Results of Berlin Heart EXCOR Pediatric Implantation in Japan. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1059] [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: 10/17/2022] Open
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31
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Hirata Y, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Katano T, Otomo S, Ushijima K, Mizuta K. Antibody Drug Treatment for Steroid-Resistant Rejection After Pediatric Living Donor Liver Transplantation: A Single-Center Experience. Transplant Proc 2018; 50:60-65. [PMID: 29407332 DOI: 10.1016/j.transproceed.2017.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 11/13/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND Antibody drugs have been used to treat steroid-resistant rejection (SRR) after liver transplantation. Although anti-thymocyte globulin has been used for SRR after liver transplantation in place of muromonab-CD3 since 2011 in Japan, the effectiveness of anti-thymocyte globulin after pediatric living-donor liver transplantation (LDLT) has not yet been reported. The aim of this study was to evaluate the effectiveness of antibody drug treatment for SRR after pediatric LDLT in our single center. METHODS Between May 2001 and December 2013, 220 pediatric LDLTs were performed. Initial immunosuppression after LDLT included tacrolimus and methylprednisolone therapy. Acute rejection was diagnosed by use of a liver biopsy and the administration of steroid pulse treatment, and SRR was defined as acute rejection refractory to the steroid pulse treatment. RESULTS Acute rejection and SRR occurred in 74 (33.6%) and 16 patients (7.3%), respectively. The graft survival rates of non-SRR and SRR were 92.4% and 87.5%, respectively (P = .464). The median concentration of alanine aminotransferase before and after the administration of antibody drug was 193.5 mU/mL (range, 8-508) and 78 mU/mL (range, 9-655), respectively (P = .012). The median rejection activity index before and after the administration of antibody drugs was 5 (range, 2-9) and 1 (range, 0-9), respectively (P = .004). After antibody drug treatment, 12 patients had cytomegalovirus infections, 2 patients had Epstein-Barr virus infections, 3 patients had respiratory infections, and 1 patient had encephalitis. The cause of death in 1 patient with SRR was recurrence of infant fulminant hepatic failure. CONCLUSIONS Antibody drug treatment for SRR after pediatric LDLT is safe and effective.
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Affiliation(s)
- Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Shimotsuke City, Japan
| | - K Ushijima
- Department of Clinical Pharmacology, Jichi Medical University, Shimotsuke City, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
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32
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Nishiyama K, Knaster J, Okumura Y, Marqueta A, Pruneri G, Scantamburlo F, Sakamoto K, Sugimoto M, Kasugai A, Hirata Y, Kondo K, Ikeda Y, Maebara S, Ichimiya R, Shinya T, Ihara A, Kitano T, Beauvais PY, Gobin R, Bolzon B. Development of calorimetry methodology for beam current measurement of the Linear IFMIF Prototype Accelerator (LIPAc). Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2017.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Shimura T, Okuda Y, Yamada T, Hirata Y, Joh T. Colorectal obstruction is a potential prognostic factor for stage II/III colorectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.028] [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: 11/14/2022] Open
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34
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Fujisawa M, Okumiya K, Garcia del Saz E, Wada T, Hirata Y, Kuzuhara S, Kokubo Y, Matsubayashi K, Manuaba I, Kareth M, Mollet J, Rantetampang A, Sakamoto R. Clinical type and prognosis of neurodegenerative diseases in Papua, Indonesia: 2001-2017 survey results. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1055] [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: 10/18/2022]
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35
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Okumiya K, Fujisawa M, Wada T, Garcia del Saz E, Hirata Y, Kuzuhara S, Kokubo Y, Matsubayashi K, Manuaba I, Ferry Kareth M, Ary Mollet J, Rantetampang A, Sakamoto R. Longitudinal study for amyotrophic lateral sclerosis and parkinsonism in Papua, Indonesia: 2001–2017 survey results. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1990] [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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Choong C, Sasaki T, Hayakawa H, Baba K, Hirata Y, Uesato S, Mochizuki H. Small-molecule inhibitors of P53/negative regulator-interaction protect dopaminergic neurons against MPP +/MPTP-induced neurotoxicity. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.632] [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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Okamura K, Nawata K, Kimura M, Kinoshita O, Masuzawa A, Yamauchi H, Hirata Y, Owada Y, Oshiro Y, Okamoto H, Ohkohchi N, Ono M. The Prevalence of Hepatitis E Virus Serum Antibodies and RNA in Heart Transplant Recipients. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.224] [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: 10/19/2022] Open
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Hirata Y, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Tashiro M, Katano T, Otomo S, Ushijima K, Mizuta K. Relationship Between Graft Liver Function and the Change of Graft Liver and Spleen Volumes After Technical Variant Liver Transplantation. Transplant Proc 2017; 48:1105-9. [PMID: 27320567 DOI: 10.1016/j.transproceed.2015.12.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/30/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Although there have been a few reports describing the changes of graft liver and spleen volumes after liver transplantation (LT), little is known about the relationship between graft liver function and the changes of these volumes after technical variant liver transplantation (TVLT). We therefore performed a retrospective study to investigate the relationship between graft liver function and these volumes after TVLT. METHODS We retrospectively investigated the cases of 140 TVLT procedures that were performed in our department between July 1987 and October 2012 and in which follow-up was conducted at our department. We calculated the graft liver volume to standard liver volume (GV/SLV) ratio, the spleen volume to standard spleen volume (SV/SSV) ratio, and the spleen volume to graft liver volume (S/L) ratio by CT volumetry. We clarified the relationship between graft liver function (according to the pathological findings) and the graft liver and spleen volumes at 2, 5, and 10 years after TVLT. RESULTS In the normal liver function group, the GV/SLV, SV/SSV, and S/L ratios decreased until 6 months after TVLT and then converged at 10 years after TVLT to 0.95, 1.27, and 0.27, respectively. In the graft liver failure group, the GV/SLV, SV/SSV, and S/L ratios at 10 years after TVLT were 0.67, 5.01, and 1.55, respectively. A significant correlation was observed between the GV/SLV ratio and the presence of mild liver fibrosis at 2 and 5 years after TVLT (P = .03 and P = .04, respectively). CONCLUSIONS Post-transplant CT-volumetry is a noninvasive and effective means of evaluating graft liver status.
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Affiliation(s)
- Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - M Tashiro
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Shimotsuke City, Tochigi, Japan
| | - K Ushijima
- Department of Clinical Pharmacology, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
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Mali VP, Fukuda A, Shigeta T, Uchida H, Hirata Y, Rahayatri TH, Kanazawa H, Sasaki K, de Ville de Goyet J, Kasahara M. Total internal biliary diversion during liver transplantation for type 1 progressive familial intrahepatic cholestasis: a novel approach. Pediatr Transplant 2016; 20:981-986. [PMID: 27534385 DOI: 10.1111/petr.12782] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/13/2016] [Indexed: 12/11/2022]
Abstract
LT for PFIC type 1 is often complicated by postoperative diarrhea and recurrent graft steatosis. A 26-month-old female child with cholestatic jaundice, pruritus, diarrhea, and growth retardation revealed total bilirubin 9.1 mg/dL, gamma-glutamyl transpeptidase 64 IU/L, and TBA 295.8 μmol/L. Genetic analysis confirmed ATP8B1 defects. A LT (segment 2, 3 graft) from the heterozygous father was performed. Biliary diversion was performed by a 35-cm jejunum conduit between the graft hepatic duct and the mid-transverse colon. Stools became pigmented immediately. Follow-up at 138 days revealed resolution of jaundice and pruritus and soft-to-hard stools (6-8 daily). Radioisotope hepato-biliary scintigraphy (days 26, 68, and 139) confirmed unobstructed bile drainage into the colon (t1/2 34, 27, and 19 minutes, respectively). Contrast meal follow-through at day 62 confirmed the absence of any colo-jejuno-hepatic reflux. At 140 days, contrast follow-through via the biliary stent revealed patent jejuno-colonic anastomosis and satisfactory transit. Graft biopsy at LT, 138 days, and 9 months follow-up revealed comparable grades of macrovesicular steatosis (<20%). TIBD during LT may be a clinically effective stoma-free biliary diversion and may prevent recurrent graft steatosis following LT for PFIC type 1.
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Affiliation(s)
- V P Mali
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan.
| | - A Fukuda
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - T Shigeta
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Uchida
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - Y Hirata
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - T H Rahayatri
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Kanazawa
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - K Sasaki
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - J de Ville de Goyet
- Department of Surgery and Transplantation Centre, Bambino Gesù Children's Hospital, Rome, Italy.,Paediatric Surgery Chair, Università di Roma Tor Vergata, Rome, Italy
| | - M Kasahara
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
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Yoshimoto N, Ujiie H, Hirata Y, Izumi K, Nishie W, Shimizu H. Bullous pemphigoid developed in a patient with prurigo nodularis. J Eur Acad Dermatol Venereol 2016; 31:e187-e189. [DOI: 10.1111/jdv.13911] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- N. Yoshimoto
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - H. Ujiie
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Y. Hirata
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - K. Izumi
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - W. Nishie
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - H. Shimizu
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
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41
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Takada H, Nagata K, Hirata Y, Satoh Y, Watahiki Y, Sugawara J, Yokoyama E, Kondoh Y, Shishido F, Inugami A. Age-related decline of cerebral oxygen metabolism in normal population detected with positron emission tomography. Neurol Res 2016; 14:128-31. [PMID: 1355868 DOI: 10.1080/01616412.1992.11740031] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Using positron emission tomography (PET), cerebral blood flow (CBF) and cerebral metabolic rate of oxygen (CMRO2) were measured in 32 healthy volunteers aged from 27 to 67 years. In bilateral putamen, left supratemporal, left infrafrontal and left parietal cortices, CMRO2 showed a significant decline during aging. The age-related decline of CBF was seen only at the left superior temporal cortex. The mean CMRO2 was significantly lower in the elder group (over 51 years old) than in the younger group (under 50 years old), whereas no significant difference in mean CBF between the two groups. The poor correlation of CBF to the age could be explained partly by the fact that CBF is easily influenced by the physiological, psychological and/or environmental factors. The age-related changes of CMRO2 were more marked in the association cortices of the left hemisphere than in that of the right hemisphere.
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Affiliation(s)
- H Takada
- Department of Neurology, Research Institute for Brain and Blood Vessels, Akita, Japan
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Yamamoto M, Matsumura R, Hirata Y, Nagamune H. Evaluation of biocompatibility of novel and commonly-used antiseptics by cell culture method. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474659 DOI: 10.1186/2047-2994-4-s1-p38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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44
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Kato Y, Toga Y, Oda Y, Kawamukai E, Hirata Y. Study of enzymatic detergents with both cleaning efficacy and disinfecting action for medical devices. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474615 DOI: 10.1186/2047-2994-4-s1-p37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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45
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Amano S, Hirata Y. Perception and Production of Singleton and Geminate Stops in Japanese: Implications for the Theory of Acoustic Invariance. Phonetica 2015; 72:43-60. [PMID: 26226989 DOI: 10.1159/000430099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 04/06/2015] [Indexed: 06/04/2023]
Abstract
The theory of relational acoustic invariance claims that there are stable acoustic properties in speech signals that correspond to a phonological feature, and that the perception system utilizes these acoustic properties for stable perception of a phoneme. The present study examines whether such an invariance exists in native listeners' perception of Japanese singleton and geminate stops despite variability in speaking rate and word length, and whether this perception corresponds to production. Native Japanese listeners identified singleton and geminate stops in continua of 3- and 4-mora words spoken at different speaking rates. Results indicated that the perception boundary is well predicted by a linear function with two variables: durations of stop closure and the (C)V(C)CV portion (with the contrasting stops underlined) of the 3- and 4-mora words. In addition, these two variables were in a consistent relationship for both perception and production of words containing 2-4 moras. The results support the relational acoustic invariance theory.
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Affiliation(s)
- Shigeaki Amano
- Faculty of Human Informatics, Aichi Shukutoku University, Nagakute, Japan
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Niikura R, Nagata N, Shimbo T, Aoki T, Yamada A, Hirata Y, Sekine K, Okubo H, Watanabe K, Sakurai T, Yokoi C, Mizokami M, Yanase M, Akiyama J, Koike K, Uemura N. Natural history of bleeding risk in colonic diverticulosis patients: a long-term colonoscopy-based cohort study. Aliment Pharmacol Ther 2015; 41:888-94. [PMID: 25715746 DOI: 10.1111/apt.13148] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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] [Received: 09/29/2014] [Revised: 10/22/2014] [Accepted: 02/11/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND The natural history of bleeding risk from colonic diverticulosis remains unclear. AIM To identify the incidence of bleeding in colonic diverticulosis patients and associated risk factors. METHODS A cohort of 1514 patients with colonoscopy-confirmed asymptomatic diverticulosis was selected between 2001 and 2013. Age, sex and location of colonic diverticulosis (right or left side, or bilateral) were assessed. The endpoint was a bleeding event, and data were censored at the time of last colonoscopy. The cumulative and overall incidences of bleeding were estimated using the Kaplan-Meier and person-years methods. The Cox proportional hazards model was used to estimate age- and sex-adjusted hazard ratios (aHRs). RESULTS The median follow-up period was 46 months. Bleeding events occurred in 35 patients, and the median time-to-event interval was 50 months. Kaplan-Meier analysis showed that the cumulative incidence of diverticular bleeding was 0.21% at 12 months, 2.2% at 60 months and 9.5% at 120 months. By the person-years method, the overall incidence rate of bleeding was 0.46 per 1000 patient-years. On multivariate analysis, age ≥70 (aHR. 3.7) and bilateral diverticulosis (aHR, 2.4) were significant risk factors for bleeding. CONCLUSIONS This long-term follow-up study demonstrated that the cumulative incidence of bleeding from diverticulosis was approximately 2% at 5 years and 10% at 10 years, and the overall incidence was 0.46 per 1000 patient-years. Bilateral diverticulosis increased the risk of bleeding.
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Affiliation(s)
- R Niikura
- Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Tokyo, Japan; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Affiliation(s)
- K Horie
- Department of Dermatology, JR Sapporo Hospital, N3 E1, Sapporo, 060-0033, Japan
| | - K Ito
- Department of Dermatology, JR Sapporo Hospital, N3 E1, Sapporo, 060-0033, Japan.
| | - Y Hirata
- Department of Dermatology, JR Sapporo Hospital, N3 E1, Sapporo, 060-0033, Japan
| | - M Ito
- Department of Dermatology, JR Sapporo Hospital, N3 E1, Sapporo, 060-0033, Japan
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Ike H, Inaba Y, Kobayashi N, Yukizawa Y, Hirata Y, Tomioka M, Saito T. Effects of rotational acetabular osteotomy on the mechanical stress within the hip joint in patients with developmental dysplasia of the hip. Bone Joint J 2015; 97-B:492-7. [DOI: 10.1302/0301-620x.97b4.33736] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 11/05/2022]
Abstract
In this study we used subject-specific finite element analysis to investigate the mechanical effects of rotational acetabular osteotomy (RAO) on the hip joint and analysed the correlation between various radiological measurements and mechanical stress in the hip joint. We evaluated 13 hips in 12 patients (two men and ten women, mean age at surgery 32.0 years; 19 to 46) with developmental dysplasia of the hip (DDH) who were treated by RAO. Subject-specific finite element models were constructed from CT data. The centre–edge (CE) angle, acetabular head index (AHI), acetabular angle and acetabular roof angle (ARA) were measured on anteroposterior pelvic radiographs taken before and after RAO. The relationship between equivalent stress in the hip joint and radiological measurements was analysed. The equivalent stress in the acetabulum decreased from 4.1 MPa (2.7 to 6.5) pre-operatively to 2.8 MPa (1.8 to 3.6) post-operatively (p < 0.01). There was a moderate correlation between equivalent stress in the acetabulum and the radiological measurements: CE angle (R = –0.645, p < 0.01); AHI (R = –0.603, p < 0.01); acetabular angle (R = 0.484, p = 0.02); and ARA (R = 0.572, p < 0.01). The equivalent stress in the acetabulum of patients with DDH decreased after RAO. Correction of the CE angle, AHI and ARA was considered to be important in reducing the mechanical stress in the hip joint. Cite this article: Bone Joint J 2015;97-B:492–7.
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Affiliation(s)
- H. Ike
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Y. Inaba
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - N. Kobayashi
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Y. Yukizawa
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Y. Hirata
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - M. Tomioka
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - T. Saito
- Yokohama City University, 3-9
Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
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Iwabuchi S, Hayashi M, Yokouchi T, Sato K, Nakayama H, Harashina J, Iwama J, Ishii M, Hiramoto Y, Hirai N, Hirata Y, Saito N, Ito K, Kimura H, Aoki K. Prophylactic intra-arterial administration of fasudil hydrochloride for vasospasm following subarachnoid haemorrhage. Acta Neurochir Suppl 2015; 120:167-9. [PMID: 25366618 DOI: 10.1007/978-3-319-04981-6_28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
PURPOSE We evaluated patients treated with prophylactic intra-arterial administration of fasudil hydrochloride (IAF) after subarachnoid haemorrhage (SAH). MATERIALS AND METHODS Between August 1998 and December 2012, 92 patients with aneurysmal SAH were treated with IAF for angiographic vasospasm without ischemic symptoms after their follow-up angiography. Patients comprised 50 women and 42 men, aged 24-83 (mean 56.6) years. IAF consisted of 15 mg of fasudil hydrochloride dissolved in 20 ml physiological saline and injected through a catheter during approximately 15 min, after diagnostic angiography. The clinical outcome was evaluated using the Glasgow Outcome Scale (GOS) at discharge and ischemic lesions resulting from vasospasm were assessed on computed tomography (CT) scan at discharge. RESULTS Forty-eight patients underwent surgical clipping and 44 patients underwent endovascular coiling. Angiographic improvement was observed in all patients (100 %). At discharge, 76 (83.0 %) of 92 patients showed good recovery on GOS. Nine patients developed progression of delayed ischemic neurological deficits (DIND) and three of these patients had ischemic lesions on CT scans. No patient had any significant changes in vital signs or any other adverse effects resulting from IAF. CONCLUSION IAF therapy was safe and effective for patients with vasospasm following SAH. Prophylactic IAF therapy may prevent symptomatic vasospasm.
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Affiliation(s)
- Satoshi Iwabuchi
- Department of Neurosurgery, Toho University Ohashi Medical Center, 2-17-6 Ohashi, Meguro-ku, Tokyo, 153-8515, Japan,
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Hirata Y. Photoisomerization of trans-Stilbene in Poly(vinyl alcohol) and Importance of Solute–Polymer Interactions. BCSJ 2015. [DOI: 10.1246/bcsj.20140269] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yoshinori Hirata
- Department of Chemistry, Faculty of Science, Kanagawa University
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