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Emelyanenko AV, Rudyak VY, Shvetsov SA, Araoka F, Nishikawa H, Ishikawa K. Transformation of polar nematic phases in the presence of an electric field. Phys Rev E 2024; 109:014701. [PMID: 38366416 DOI: 10.1103/physreve.109.014701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 12/07/2023] [Indexed: 02/18/2024]
Abstract
Only a few years have passed since the discovery of polar nematics, and now they are becoming the most actively studied liquid-crystal materials. Despite numerous breakthrough findings made recently, a theoretical systematization is still lacking. In the present paper, we take a step toward systematization. The powerful technique of molecular-statistical physics has been applied to an assembly of polar molecules influenced by electric field. Three polar nematic phases were found to be stable at various conditions: the double-splay ferroelectric nematic N_{F}^{2D} (observed in the lower-temperature range in the absence of or at low electric field), the double-splay antiferroelectric nematic N_{AF} (observed at intermediate temperature in the absence of or at low electric field), and the single-splay ferroelectric nematic N_{F}^{1D} (observed at moderate electric field at any temperature below transition into paraelectric nematic N and in the higher-temperature range (also below N) at low electric field or without it. A paradoxical transition from N_{F}^{1D} to N induced by application of higher electric field has been found and explained. A transformation of the structure of polar nematic phases at the application of electric field has also been investigated by Monte Carlo simulations and experimentally by observation of polarizing optical microscope images. In particular, it has been realized that, at planar anchoring, N_{AF} in the presence of a moderate out-of-plane electric field exhibits twofold splay modulation: antiferroelectric in the plane of the substrate and ferroelectric in the plane normal to the substrate. Several additional subtransitions related to fitting the confined geometry of the cell by the structure of polar phases were detected.
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Affiliation(s)
| | - V Yu Rudyak
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - S A Shvetsov
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - F Araoka
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - H Nishikawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - K Ishikawa
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Lo WB, Chan J, Nishikawa H. Re: A cross-sectional retrospective study comparing handwritten operation notes with electronic operation notes. Ann R Coll Surg Engl 2023. [PMID: 37051745 DOI: 10.1308/rcsann.2023.0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Affiliation(s)
- W B Lo
- Birmingham Children's Hospital, UK
| | - Jkk Chan
- Stoke Mandeville Hospital, Buckinghamshire Healthcare NHS Trust, UK
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Mikuni H, Watanabe G, Kumagai S, Yamamoto S, Sawada R, Yokoyama K, Honma Y, Sekine S, Kashihara T, Ishiyama K, Oguma J, Igaki H, Saruta M, Daiko H, Koyama S, Nishikawa H, Kato K. 1240P Activation status of CD8+ T and Treg cells in the tumor microenvironment potentially predicts the clinical efficacy of nivolumab in advanced esophageal squamous cell carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1358] [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] Open
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Bando H, Kumagai S, Kotani D, Saori M, Habu T, Tsushima T, Hara H, Kadowaki S, Kato K, Chin K, Yamaguchi K, Kageyama SI, Hojo H, Nakamura M, Tachibana H, Wakabayashi M, Fukutani M, Fuse N, Nishikawa H, Kojima T. 1211P A multicenter phase II study of atezolizumab monotherapy following definitive chemoradiotherapy for unresectable locally advanced esophageal squamous cell carcinoma (EPOC1802). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Nishikawa H, Christiany P, Hayashi T, Iizasa H, Yoshiyama H, Hatakeyama M. Kinase Activity of PAR1b, Which Mediates Nuclear Translocation of the BRCA1 Tumor Suppressor, Is Potentiated by Nucleic Acid-Mediated PAR1b Multimerization. Int J Mol Sci 2022; 23:6634. [PMID: 35743080 PMCID: PMC9223676 DOI: 10.3390/ijms23126634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/09/2022] [Accepted: 06/12/2022] [Indexed: 02/07/2023] Open
Abstract
PAR1b is a cytoplasmic serine/threonine kinase that controls cell polarity and cell-cell interaction by regulating microtubule stability while mediating cytoplasmic-to-nuclear translocation of BRCA1. PAR1b is also a cellular target of the CagA protein of Helicobacter pylori, which leads to chronic infection causatively associated with the development of gastric cancer. The CagA-PAR1b interaction inactivates the kinase activity of PAR1b and thereby dampens PAR1b-mediated BRCA1 phosphorylation, which reduces the level of nuclear BRCA1 and thereby leads to BRCAness and BRCAness-associated genome instability underlying gastric carcinogenesis. While PAR1b can multimerize within the cells, little is known about the mechanism and functional role of PAR1b multimerization. We found in the present study that PAR1b was multimerized in vitro by binding with nucleic acids (both single- and double-stranded DNA/RNA) via the spacer region in a manner independent of nucleic-acid sequences, which markedly potentiated the kinase activity of PAR1b. Consistent with these in vitro observations, cytoplasmic introduction of double-stranded DNA or expression of single-stranded RNA increased the PAR1b kinase activity in the cells. These findings indicate that the cytoplasmic DNA/RNA contribute to nuclear accumulation of BRCA1 by constitutively activating/potentiating cytoplasmic PAR1b kinase activity, which is subverted in gastric epithelial cells upon delivery of H. pylori CagA oncoprotein.
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Affiliation(s)
- Hiroko Nishikawa
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; (H.N.); (P.C.); (T.H.)
| | - Priscillia Christiany
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; (H.N.); (P.C.); (T.H.)
| | - Takeru Hayashi
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; (H.N.); (P.C.); (T.H.)
| | - Hisashi Iizasa
- Department of Microbiology, Faculty of Medicine, Shimane University, Izumo 693-8501, Japan; (H.I.); (H.Y.)
| | - Hironori Yoshiyama
- Department of Microbiology, Faculty of Medicine, Shimane University, Izumo 693-8501, Japan; (H.I.); (H.Y.)
| | - Masanori Hatakeyama
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; (H.N.); (P.C.); (T.H.)
- Laboratory of Virology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Shinagawa-ku, Tokyo 141-0021, Japan
- Center for Infectious Cancers, Institute for Genetic Medicine, Hokkaido University, Kita-ku, Sapporo 060-0815, Japan
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Koori N, Miyati T, Ohno N, Kawashima H, Nishikawa H. Sigmoid model analysis of breast dynamic contrast-enhanced MRI: Distinguishing between benign and malignant breast masses and breast cancer subtype prediction. J Appl Clin Med Phys 2022; 23:e13651. [PMID: 35594028 PMCID: PMC9195041 DOI: 10.1002/acm2.13651] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 11/23/2022] Open
Abstract
Dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI) is performed to distinguish between benign and malignant lesions by evaluating the changes in signal intensity of the acquired image (kinetic curve). This study aimed to verify whether the existing breast DCE‐MRI analyzed by the sigmoid model can accurately distinguish between benign and invasive ductal carcinoma (IDC) and predict the subtype. A total of 154 patients who underwent breast MRI for detailed breast mass examinations were included in this study (38 with benign masses and 116 with IDC. The sigmoid model involved the acquisition of images at seven timepoints in 1‐min intervals to determine the change in signal intensity before and after contrast injection. From this curve, the magnitude of the increase in signal intensity in the early phase, the time to reach the maximum increase, and the slopes in the early and late phases were calculated. The Mann–Whitney U‐test was used for the statistical analysis. The IDC group exhibited a significantly larger and faster signal increase in the early phase and a significantly smaller rate of increase in the late phase than the benign group (P < 0.001). The luminal A‐like group demonstrated a significantly longer time to reach the maximum signal increase rate than other IDC subtypes (P < 0.05). The sigmoid model analysis of breast DCE‐MRI can distinguish between benign lesions and IDC and may also help in predicting luminal A‐like breast cancer.
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Affiliation(s)
- Norikazu Koori
- Department of Radiology, Komaki City Hospital, Komaki, Aichi, Japan.,Division of Health Sciences, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Ishikawa, Japan
| | - Tosiaki Miyati
- Division of Health Sciences, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Ishikawa, Japan
| | - Naoki Ohno
- Division of Health Sciences, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Ishikawa, Japan
| | - Hiroko Kawashima
- Division of Health Sciences, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Ishikawa, Japan
| | - Hiroko Nishikawa
- Department of Radiology, Komaki City Hospital, Komaki, Aichi, Japan
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Emelyanenko AV, Rudyak VY, Shvetsov SA, Araoka F, Nishikawa H, Ishikawa K. Emergence of paraelectric, improper antiferroelectric, and proper ferroelectric nematic phases in a liquid crystal composed of polar molecules. Phys Rev E 2022; 105:064701. [PMID: 35854528 DOI: 10.1103/physreve.105.064701] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 05/13/2022] [Indexed: 05/15/2023]
Abstract
We have elaborated a theoretical approach for the description of polar nematic phases observed by Nishikawa et al. [Adv. Mater. 29, 1702354 (2017)0935-964810.1002/adma.201702354], their structures, and transitions between them. Specific symmetry contributions to the pair molecular potentials provide the molecular mechanisms responsible for the formation of proper and improper polarity on the macroscopic level. An improper antiferroelectric nematic M2 phase can arise between paraelectric nematic M1 and proper ferroelectric nematic MP in the temperature scale. The local polarization in M2 arises mostly due to the local splay deformation. The director distribution in M2 represents the conjugation of cylindrical waves with opposite splay and polarization signs. The director and polarization are parallel to the cylindrical domain axes in the middle of each cylinder but exhibit considerable (mostly radial) deformation on the periphery of each cylinder. Polarization vectors are mostly stacked antiparallel on the borders between the domains without the director disruption. The domain size decreases with the decreasing temperature, the percentage of the antiferroelectric decouplings increases, and M2 exhibits the first-order phase transition into proper ferroelectric MP. With the increasing temperature the domain size in the M2 phase increases, the domination of particular polar orientation of molecules reduces, and finally, the domain size diverges at particular temperature corresponding to the second-order phase transition from M2 to paraelectric M1. Variations of the polar and nonpolar orientational order parameters are estimated within each phase and between the phases. Our experimental and computer simulation results (also presented in the paper) fully support our theoretical findings.
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Affiliation(s)
| | - V Yu Rudyak
- Lomonosov Moscow State University, Moscow 119991, Russia
| | - S A Shvetsov
- Lomonosov Moscow State University, Moscow 119991, Russia
- Lebedev Physical Institute, Moscow 119991, Russia
| | - F Araoka
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - H Nishikawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa Wako, Saitama 351-0198, Japan
| | - K Ishikawa
- Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Koori N, Yoshida Y, Noda A, Maeda A, Nishikawa F, Yasui M, Kurata K, Suzuki Y, Kamekawa H, Nishikawa H. [Effectiveness of Radiological Technologists in Reporting Computed Tomography Findings in After-hour Emergencies]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2022; 78:582-592. [PMID: 35569957 DOI: 10.6009/jjrt.2022-1230] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE This study investigated the effectiveness of assistive work of radiological technologists (RTs) in conducting computed tomography (CT)/magnetic resonance imaging (MRI) during emergencies. METHODS In total, 2681 examinations in 2294 patients who underwent CT or MRI during our after-hours clinic hours were conducted. The emergency of the diseases was classified into three categories: emergency diseases, semi-emergency diseases, and non-emergency diseases. The reading report of the RTs group, resident physicians (RPs) group, and senior physicians (SPs) group were used to calculate the sensitivity, specificity, and accuracy. RESULTS The RTs group had an accuracy of 87.0% for emergency and semi-emergency diseases. The sensitivity of the combined RTs/RPs/SPs group was higher than that of the RPs and SPs group alone. CONCLUSION After-hours help from RTs for emergency and semi-emergency diseases enhanced sensitivity and thus demonstrated the effectiveness in emergency care.
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Affiliation(s)
- Norikazu Koori
- Department of Radiology, Komaki City Hospital.,Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University
| | | | - Akari Noda
- Department of Radiology, Komaki City Hospital
| | - Akiko Maeda
- Department of Radiology, Komaki City Hospital
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Teramoto K, Izumo M, Kuwata S, Kamijima R, Suzuki T, Nishikawa H, Mizukoshi K, Takai M, Ohara H, Harada T, Akashi Y. Prognostic relevance of exercise pulmonary hypertension for new-onset atrial fibrillation in primary mitral regurgitation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0023] [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/Introduction
New-onset of atrial fibrillation (AF) portends poor prognosis in patients with primary mitral regurgitation (MR). However less is known about prognostic indicator for new-onset AF.
Purpose
The purpose of this study was to identify the prognostic relevance of exercise pulmonary hypertension for the new-onset AF in patients with primary MR.
Methods
Total of 114 consecutive patients with primary MR who underwent symptom-limited exercise echocardiography using supine-cycle ergometer were followed for new-onset AF over mean follow-up time of 3.6±2.6 years. Those with prevalent AF and pulmonary hypertension (estimated systolic pulmonary artery pressure ≥50mmHg) prior to exercise echocardiography were excluded from our analysis. We defined exercise-induced pulmonary hypertension (ExPHT) as those with peak estimated systolic pulmonary artery pressure (SPAP) ≥60mmHg or delta SPAP defined as differences between rest and peak SPAP ≥20mmHg.
Results
The mean age was 61±15 years old and 70 (61%) were male. Of those, 8 (7.8%) had mild MR, 32 (31.1%) had moderate MR, and 63 (61.2%) had severe MR. 60 (52.2%) patients had ExPHT. A total of 27 cases of new-onset AF were found during follow-up where the ExPHT group had higher prevalence of new-onset AF than the non-ExPHT group (35% vs. 11%, p=0.002). Those with ExPHT had significantly stronger association with shorter event-free survival time of new-onset AF (log-rank p<0.001, Figure). When adjusted for age, sex, body surface area, the American Society of Echocardiography MR grade, left atrial dimension, peak systolic blood pressure and heart rate, the multivariable Cox regression analysis showed that those with ExPHT had a hazard risk of 3.1 ([95% CI 1.1–9.1], p=0.039) for new-onset of AF.
Conclusions
Exercise-induced pulmonary hypertension predicted incident of new-onset AF in those with primary MR. Exercise echocardiography is expected to play an important role in decision making with regards to the optimal timing for surgical intervention in primary MR.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Teramoto
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Izumo
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - S Kuwata
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - R Kamijima
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - T Suzuki
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Nishikawa
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - K Mizukoshi
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Takai
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Ohara
- St. Marianna University School of Medicine, Division of Ultrasound Center, Kawasaki, Japan
| | - T Harada
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - Y.J Akashi
- St. Marianna University School of Medicine, Kawasaki, Japan
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Yuki S, Bando H, Tsukada Y, Inamori K, Komatsu Y, Homma S, Uemura M, Kato T, Kotani D, Fukuoka S, Nakamura N, Fukui M, Wakabayashi M, Kojima M, Sato A, Togashi Y, Nishikawa H, Ito M, Yoshino T. SO-37 Short-term results of VOLTAGE-A: Nivolumab monotherapy and subsequent radical surgery following preoperative chemoradiotherapy in patients with microsatellite stability and microsatellite instability-high, locally advanced rectal cancer (EPOC 1504). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.052] [Citation(s) in RCA: 2] [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] [Indexed: 11/29/2022] Open
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Nishikawa H, Taniguchi Y, Ogasawara M, Inotani S, Amano E, Matsumoto T, Hamada-Ode K, Shimamura Y, Horino T, Fujimoto S, Terada Y. AB1050 CLINICAL IMPLICATIONS OF ULTRASONOGRAPHY (US) IN DIAGNOSIS AND MONITORING DISEASE ACTIVITY OF RELAPSING POLYCHONDRITIS (RP) AND COMPARATIVE INVESTIGATION BY US BETWEEN AURICLE OF RP, REPEATED TRAUMA, CELLULITIS AND HEALTHY SUBJECT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objectives:To assess the clinical implications of ultrasonography (US) in monitoring disease activity and diagnosis of relapsing polychondritis (RP).Methods:Firstly, auricular (n=5) and nasal (n=1) chondritis of six patients with RP were assessed by US before and after treatments. The relationship between US findings and serum markers were evaluated. Moreover, the comparisons of US findings between the auricle of patients with RP (n=5), repeated trauma (n=5), cellulitis (n=2) and healthy subjects (n=5) were also assessed.Results:US finding before treatment showed low-echoic swollen auricular and nasal cartilage with increased power Doppler signals (PDS) in all cases of RP. US findings corresponded to biopsy findings. After treatment, the swollen ear and nose completely resolved. Then, US findings also showed dramatic reductions in swollen cartilage with the decrease in PDS. Although serum markers completely improved, US finding remained in 1 of 6 cases, and this case showed flare due to PSL tapering. Finally, RP could be differentiated from the damage of repeated trauma and cellulitis by the presence or absence of PDS and subperichondrial serous effusion.Conclusion:US of auricular and nasal cartilage in RP possibly facilitates evaluation of auricular lesions and monitoring of disease activity, especially when we consider the treatment response and the timing of drug tapering.Disclosure of Interests:None declared
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Inotani S, Taniguchi Y, Nishikawa H, Maeda-Aoyama N, Nakajima K, Arii K, Terada Y. AB1031 DYSKERATOTIC CELLS IN PERSISTENT PRURITIC SKIN LESIONS AS A PROGNOSTIC FACTOR IN ADULT-ONSET STILL’S DISEASE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Adult-onset Still’s disease (AOSD), a systemic inflammatory disorder, is characterized by high fever, evanescent rash, arthritis, and hyperferritinaemia. AOSD is also reported to be associated with other skin lesions, including persistent pruritic papules and plaques.Objectives:This study aimed to assess the significance of dyskeratotic skin lesions in Japanese AOSD patients.Methods:We retrospectively assessed the histology of persistent pruritic skin lesions and evanescent rashes and the relationship between dyskeratotic cells, serum markers, and outcomes in 20 Japanese AOSD patients, comparing AOSD histology with that of dermatomyositis (DM), drug eruptions, and graft-versus-host disease (GVHD).Results:Persistent pruritic lesions were characterized by scattered single keratinocytes with an apoptotic appearance confined to the upper layer of the epidermis and horny layer without inflammatory infiltrate. In contrast to AOSD, the histology of DM, drug eruption, and GVHD demonstrated dyskeratotic cells in all layers of the epidermis with inflammatory infiltrate. AOSD with evanescent rash showed no dyskeratotic cells. The dyskeratotic cells in pruritic AOSD lesions stained positive for ssDNA and terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling, indicating apoptosis. Serum IL-18 was significantly higher in AOSD patients with dyskeratotic cells than those without, and generally required higher doses of glucocorticoids, immunosuppressants, and biologic agents. Two of ten AOSD patients with dyskeratotic cells died from haemophagocytic lymphohistiocytosis.Conclusion:Persistent pruritic AOSD skin lesions are characterized by dyskeratotic cells with apoptotic features, involving the upper layers of the epidermis. There may be a link to elevated IL-18. This dyskeratosis may be a negative prognostic indicator.Disclosure of Interests:None declared
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Horino T, Nishikawa H, Inotani S, Matsumoto T, Ichii O, Terada Y. Anti-Ku antibody-related scleroderma-polymyositis overlap syndrome associated with thrombocytopaenia. QJM 2020; 113:349-350. [PMID: 31804683 DOI: 10.1093/qjmed/hcz313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Horino
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - H Nishikawa
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - S Inotani
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - T Matsumoto
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - O Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Japan
| | - Y Terada
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
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Urano M, Nishikawa H, Goto T, Shiraki N, Matsuo M, Denewar FA, Kondo N, Toyama T, Shibamoto Y. Digital Mammographic Features of Breast Cancer Recurrences and Benign Lesions Mimicking Malignancy Following Breast-Conserving Surgery and Radiation Therapy. Kurume Med J 2020; 65:113-121. [PMID: 31723078 DOI: 10.2739/kurumemedj.ms654005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 06/10/2023]
Abstract
Mammography after breast-conserving surgery and radiation therapy is an important tool for followup. Early diagnosis of local recurrence enables prompt treatment decisions, which may affect patient prognosis. For complicated post-treatment changes, radiologists sometimes have difficulties in interpreting follow-up mammography. Fat necrosis, dystrophic calcifications, suture calcification features, breast edema, seroma and distorted breast are benign changes related to treatment. These findings may mimic or hide tumor recurrence making it difficult to diagnose recurrences or prevent inappropriate biopsies. Recurrent tumors in follow-up mammography show several typical findings such as increasing asymmetric density, enlarging mass, reappearance of breast edema, and micro-calcifications. The purpose of this pictorial review is to demonstrate and discuss mammographic findings of recurrent tumors and important post-treatment changes that may mimic benign or malignant lesions, also using breast ultrasound images or breast magnetic resonance images. Recognizing post-treatment changes may help radiologists to more effectively identify candidates for suspected local recurrences.
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Affiliation(s)
- Misugi Urano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | | | - Taeko Goto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Norio Shiraki
- Department of Radiology, Nagoya City West Medical Center
| | - Masayuki Matsuo
- Department of Radiology, Gifu University Graduate School of Medical Sciences
| | | | - Naoto Kondo
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences
| | - Tatsuya Toyama
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
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Cho J, Uejima T, Nishikawa H, Yajima J, Yamashita T. P289 Aortic valve resistance risk-stratifies low-gradient aortic stenosis. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.143] [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
Background
Grading the severity of aortic stenosis (AS) is challenging, since there is a discrepancy between aortic valve area (AVA) and mean pressure gradient (mPG). Arotic valve resistance (RES) has been proposed as a usuful descriptor of AS severity, but it is not commonly used for clinical decision-making, because its robust validation of clinical-outcome efficacy is lacking. This study aimed to investigate whether RES holds an incremental value for risk-stratifying AS.
Methods
This study recuited 565 AS patients (AVA < 1.5cm²) referred to echocardiography for valve assessment. The patients were divided into three different groups, according to the guidelines: high-gradient AS (HG-AS, mPG≥40mmHg, n = 157), low-gradient AS (LG-AS, mPG < 40mmHg + AVA ≤ 1.0cm², n = 155) and moderate AS (Mod-AS, mPG < 40mmHg + AVA > 1.0cm², n = 253). RES was calculated from Doppler measurement of mPG and stoke volume. The diagnositic cutoff point for RES was determined at 190 dynes × s×cm-5 by substituting AVA = 1.0cm² and mPG = 40mmHg into the definition formula of RES and Gorlin formula. The patients were followed up for 2 years. The endpoint was a composite of cardiac death, hospitalization for heart failure and aortic valve replacement necessitated by the development of AS-related symptoms.
Result
Kaplan-Meier analyses showed that LG-AS exhibited an intermediate outcome between HG-AS and Mod-AS (event-free survival at 2 years = 20.9% for HG-AS, 59.7% for LG-AS, 89.9% for Mod-AS, p < 0.001, figure A). When LG-AS was stratified by RES, the survival curves showed a significant separation (event-free survival at 2 years = 35.3% for high RES, 70.7% for low RES, p < 0.001, figure B). This trend persisted even when analysed separately for norml (stroke volume index > 35ml/m²) and low (stroke volume index ≤ 35ml/m²) flow state ((normal flow) event-free survival at 2 years = 38.7% for high RES, 70.4% for low RES, p = 0.023, figure C; (low flow) event-free survival at 2 years = 26.7% for high RES, 74.6% for low RES, p < 0.001, figure D).
Conclusion
This study confirmed the clinical efficacy of RES for risk-stratifying LG-AS patients.
Abstract P289 Figure.
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Affiliation(s)
- J Cho
- Cardiovascular Institute, Tokyo, Japan
| | - T Uejima
- Cardiovascular Institute, Tokyo, Japan
| | - H Nishikawa
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - J Yajima
- Cardiovascular Institute, Tokyo, Japan
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Kirita K, Sugiyama E, Togashi Y, Udagawa H, Irie T, Iida S, Nakamoto M, Nomura S, Ikeda T, Zenke Y, Matsumoto S, Yoh K, Niho S, Sato A, Nishikawa H, Goto K. Clinical utility of precision immunoprofiling and monitoring of the tumour microenvironment using flow cytometry and CyTOF in patients with advanced NSCLC treated with atezolizumab: Results from a phase II study for biomarker analysis (EPOC1702). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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17
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Hara H, Fukuoka S, Takahashi N, Kojima T, Kawazoe A, Asayama M, Yoshii T, Kotani D, Tamura H, Mikamoto Y, Sugama A, Wakabayashi M, Nomura S, Sato A, Togashi Y, Nishikawa H, Shitara K. Regorafenib plus nivolumab in patients with advanced colorectal or gastric cancer: an open-label, dose-finding, and dose-expansion phase 1b trial (REGONIVO, EPOC1603). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz157.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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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18
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Ishida N, Ike A, Matsuoka Y, Sugihara M, Nishikawa H, Saku K, Miura S. Lipid profiles associated with maces among hemodialysis patients with percutaneous coronary intervention: From the fu-registry. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.597] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ike A, Matsuoka Y, Ishida N, Sugihara M, Nishikawa H, Shirai K, Miura S, Saku K. Sex difference between target levels of cholesterol-related parameters and post-PCI long-term clinical outcomes: From the FU-Registry. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.703] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nishikawa H, Uejima T, Takahashi L, Semba H, Sawada H, Yamashita T. P6296Aortic valve resistance risk-stratifies low gradient aortic stenosis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - T Uejima
- Cardiovascular Institute, Tokyo, Japan
| | - L Takahashi
- Tokyo Medical University Hospital, Tokyo, Japan
| | - H Semba
- Cardiovascular Institute, Tokyo, Japan
| | - H Sawada
- Cardiovascular Institute, Tokyo, Japan
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Hayashi T, Senda M, Suzuki N, Nishikawa H, Ben C, Tang C, Nagase L, Inoue K, Senda T, Hatakeyama M. Differential Mechanisms for SHP2 Binding and Activation Are Exploited by Geographically Distinct Helicobacter pylori CagA Oncoproteins. Cell Rep 2018; 20:2876-2890. [PMID: 28930683 DOI: 10.1016/j.celrep.2017.08.080] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [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: 03/15/2017] [Revised: 06/26/2017] [Accepted: 08/23/2017] [Indexed: 12/28/2022] Open
Abstract
Helicobacter pylori East Asian CagA is more closely associated with gastric cancer than Western CagA. Here we show that, upon tyrosine phosphorylation, the East Asian CagA-specific EPIYA-D segment binds to the N-SH2 domain of pro-oncogenic SHP2 phosphatase two orders of magnitude greater than Western CagA-specific EPIYA-C. This high-affinity binding is achieved via cryptic interaction between Phe at the +5 position from phosphotyrosine in EPIYA-D and a hollow on the N-SH2 phosphopeptide-binding floor. Also, duplication of EPIYA-C in Western CagA, which increases gastric cancer risk, enables divalent high-affinity binding with SHP2 via N-SH2 and C-SH2. These strong CagA bindings enforce enzymatic activation of SHP2, which endows cells with neoplastic traits. Mechanistically, N-SH2 in SHP2 is in an equilibrium between stimulatory "relaxed" and inhibitory "squeezed" states, which is fixed upon high-affinity CagA binding to the "relaxed" state that stimulates SHP2. Accordingly, East Asian CagA and Western CagA exploit distinct mechanisms for SHP2 deregulation.
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Affiliation(s)
- Takeru Hayashi
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Miki Senda
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - Nobuhiro Suzuki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - Hiroko Nishikawa
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Max Planck-The University of Tokyo Center for Integrative Inflammology, Tokyo 113-0033, Japan
| | - Chi Ben
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Chao Tang
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Lisa Nagase
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - Kaori Inoue
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Toshiya Senda
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan; Department of Materials Structure Science, School of High Energy Accelerator Science, The Graduate University of Advanced Studies, Tsukuba 305-0801, Japan.
| | - Masanori Hatakeyama
- Department of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Max Planck-The University of Tokyo Center for Integrative Inflammology, Tokyo 113-0033, Japan.
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Bando H, Tsukada Y, Inamori K, Fukuoka S, Sasaki T, Nishizawa Y, Wakabayashi M, Kojima M, Togashi Y, Yuki S, Komatsu Y, Homma S, Hatanaka Y, Matsuno Y, Uemura M, Kato T, Sato A, Nishikawa H, Ito M, Yoshino T. VOLTAGE: Multicenter phase Ib/II study of nivolumab monotherapy and subsequent radical surgery following preoperative chemoradiotherapy (CRT) with capecitabine in patients with locally advanced rectal cancer (LARC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.227] [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] [Indexed: 11/13/2022] Open
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Marumo F, Nomura T, Nishikawa H. Transverse Fractures of the Spinous Process of the 7th Cervical Vertebra in RDT Patients: An AI Related Disease? Int J Artif Organs 2018. [DOI: 10.1177/039139888701000206] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Transverse fractures of the spinous process of the 7th cervical vertebra were noted in 2 patients and of the 1st thoracic vertebra in 1 patient on maintenance hemodialysis. Two patients with aluminum (AI)- and/or iron-related bone disease complained of bone pain, relieved by deferoxamine therapy. In all three cases, the bone fractures had occurred suddenly while the patients were going about their daily work. These observations indicate that AI- or iron-related bone disease with secondary hyperparathyroidism can induce bone fracture by only slight stress in patients maintained on hemodialysis.
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Affiliation(s)
- F. Marumo
- Department of Medicine Kitasato University School of Medicine Kidney Center, Morishita Hospital, Nishikawa Clinic Sagamihara, Kanagawa, Japan
| | - T. Nomura
- Department of Medicine Kitasato University School of Medicine Kidney Center, Morishita Hospital, Nishikawa Clinic Sagamihara, Kanagawa, Japan
| | - H. Nishikawa
- Department of Medicine Kitasato University School of Medicine Kidney Center, Morishita Hospital, Nishikawa Clinic Sagamihara, Kanagawa, Japan
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Mitsudera H, Miyama T, Nishigaki H, Nakanowatari T, Nishikawa H, Nakamura T, Wagawa T, Furue R, Fujii Y, Ito S. Low ocean-floor rises regulate subpolar sea surface temperature by forming baroclinic jets. Nat Commun 2018; 9:1190. [PMID: 29568009 PMCID: PMC5864925 DOI: 10.1038/s41467-018-03526-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 06/13/2017] [Accepted: 02/21/2018] [Indexed: 11/13/2022] Open
Abstract
Sea surface temperature (SST) fronts in mid- to high-latitude oceans have significant impacts on extratropical atmospheric circulations and climate. In the western subarctic Pacific, sharp SST fronts form between the cold subarctic water and the recently found quasi-stationary jets that advect warm waters originating in the Kuroshio northeastward. Here we present a new mechanism of the jet formation paying attention to the propagation of baroclinic Rossby waves that is deflected by eddy-driven barotropic flows over bottom rises, although their height is low (~500 m) compared with the depth of the North Pacific Ocean (~6000 m). Steered by the barotropic flows, Rossby waves bring a thicker upper layer from the subtropical gyre and a thinner upper layer from the subarctic gyre, thereby creating a thickness jump, hence a surface jet, where they converge. This study reveals an overlooked role of low-rise bottom topography in regulating SST anomalies in subpolar oceans. Sea surface temperature fronts in mid-and-high latitudes give significant impacts on atmospheric circulations and climate. Here, the authors uncover a new mechanism on the sea surface front genesis in the subpolar oceans in which small-amplitude bottom topography is surprisingly effective.
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Affiliation(s)
- H Mitsudera
- Pan Okhotsk Research Center, Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan.
| | - T Miyama
- Application Laboratory, Japan Agency for Marine-Earth Science and Technology, Yokohama, 236-0001, Japan
| | - H Nishigaki
- Division of Natural Sciences, Faculty of Science and Technology, Oita Univeristy, Oita, 870-1192, Japan
| | - T Nakanowatari
- National Institute of Polar Research, Tachikawa, 190-8518, Japan
| | - H Nishikawa
- Pan Okhotsk Research Center, Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan
| | - T Nakamura
- Pan Okhotsk Research Center, Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan
| | - T Wagawa
- Japan Sea Fisheries Research Institute, Japan Fisheries Research and Education Agency, Niigata, 951-8121, Japan
| | - R Furue
- Application Laboratory, Japan Agency for Marine-Earth Science and Technology, Yokohama, 236-0001, Japan
| | - Y Fujii
- Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, 305-0052, Japan
| | - S Ito
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, 277-8564, Japan
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25
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Taniguchi Y, Nishikawa H, Amano E, Fujimoto S, Terada Y. Ultrasonographic findings as diagnostic and follow-up tool in cranial giant cell arteritis. QJM 2017; 110:851-852. [PMID: 29024993 DOI: 10.1093/qjmed/hcx174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Taniguchi
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Nankoku, Kochi, Japan
| | - H Nishikawa
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Nankoku, Kochi, Japan
| | - E Amano
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Nankoku, Kochi, Japan
| | - S Fujimoto
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Nankoku, Kochi, Japan
| | - Y Terada
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Nankoku, Kochi, Japan
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26
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Kato M, Masuda J, Kakimoto M, Dohi K, Kawasaki A, Kitamura T, Iwata A, Suzuki H, Miyahara M, Nishikawa H, Ito M. P4634The clinical impact of chronic total occlusion on acute myocardial infarction patients from mie acs registry. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4634] [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)
- M. Kato
- Mie Heart Center, Mie, Japan
| | | | | | | | | | | | | | | | | | | | - M. Ito
- Mie CCU Network, Mie, Japan
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27
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Nishikawa H, Hatakeyama M. Sequence Polymorphism and Intrinsic Structural Disorder as Related to Pathobiological Performance of the Helicobacter pylori CagA Oncoprotein. Toxins (Basel) 2017; 9:toxins9040136. [PMID: 28406453 PMCID: PMC5408210 DOI: 10.3390/toxins9040136] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/08/2017] [Accepted: 04/10/2017] [Indexed: 12/12/2022] Open
Abstract
CagA, an oncogenic virulence factor produced by Helicobacter pylori, is causally associated with the development of gastrointestinal diseases such as chronic gastritis, peptic ulcers, and gastric cancer. Upon delivery into gastric epithelial cells via bacterial type IV secretion, CagA interacts with a number of host proteins through the intrinsically disordered C-terminal tail, which contains two repeatable protein-binding motifs, the Glu-Pro-Ile-Tyr-Ala (EPIYA) motif and the CagA multimerization (CM) motif. The EPIYA motif, upon phosphorylation by host kinases, binds and deregulates Src homology 2 domain-containing protein tyrosine phosphatase 2 (SHP2), a bona fide oncoprotein, inducing pro-oncogenic mitogenic signaling and abnormal cell morphology. Through the CM motif, CagA inhibits the kinase activity of polarity regulator partitioning-defective 1b (PAR1b), causing junctional and polarity defects while inducing actin cytoskeletal rearrangements. The magnitude of the pathobiological action of individual CagA has been linked to the tandem repeat polymorphisms of these two binding motifs, yet the molecular mechanisms by which they affect disease outcome remain unclear. Recent studies using quantitative techniques have provided new insights into how the sequence polymorphisms in the structurally disordered C-terminal region determine the degree of pro-oncogenic action of CagA in the gastric epithelium.
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Affiliation(s)
- Hiroko Nishikawa
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
- CREST, Japan Science and Technology Agency, Saitama 332-0012, Japan.
- Max Planck-The University of Tokyo Center for Integrative Inflammology, Tokyo 113-0033, Japan.
| | - Masanori Hatakeyama
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
- CREST, Japan Science and Technology Agency, Saitama 332-0012, Japan.
- Max Planck-The University of Tokyo Center for Integrative Inflammology, Tokyo 113-0033, Japan.
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28
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Dover M, McMillan K, Evans M, White N, Rodrigues D, Sharp M, Nishikawa H. Posterior calvarial distraction — a 10-year review of clinical practice and outcomes. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.054] [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: 11/25/2022]
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29
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Villemain O, Takahashi L, Piro VR, Hu K, Amzulescu MS, Hjertaas JJ, Mornos C, Zaar DVJ, Correia M, Mousseaux E, Baranger J, Zarka S, Pernot M, Messas E, Uejima T, Nishikawa H, Semba H, Sawada H, Yamashita T, Piro O, Piro N, Liu D, Oder D, Herrmann S, Ertl G, Weidemann F, Wanner C, Stoerk S, Nordbeck P, Langet H, Saloux E, Manrique A, Boileau L, Slimani A, Allain P, Roy C, Pasquet A, De Craene M, Vancraeynest D, Pouleur AC, Vanoverschelde JL, Gerber BLM, Matre K, Ionac A, Petrescu L, Mornos A, Lazar M, Sosdean R, Cozma D, Van Mourik M, Smulders MW, Passos VL, Schalla S, Knackstedt C, Schummers G, Gjesdal O, Edvardsen T, Bekkers SC. Rapid Fire Abstract: Emerging imaging techniques303Myocardial stiffness assessment using shear wave imaging in healthy adult population302Intracardiac vortex intensity predicts early decompensation in dilated cardiomyopathy304A quantitative and qualitative characterization of the intraventricular blood flow of the normal human left ventricle using a contrast-tracking echo-PIV technique305Speckle tracking derived diastolic strain rate is an independent determinant of cardiac magnetic resonance detected myocardial fibrosis in patients with Fabry disease306Head to head comparison of global and regional 2D speckle tracking strain vs cardiac magnetic resonance tagging in a multicenter validation study307A twisting left ventricular ultrasound phantom for evaluation of 3D speckle tracking twist measurements308A new 2D-strain index to improve cardiovascular risk stratification in heart failure with reduced and mid-range ejection fraction309Adding speckle tracking echocardiography to visual assessment improves the detection of chronic myocardial infarction. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew237] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kebed K, Moustafa TAMER, Conte R, Doering C, Van Grootel RWJ, Badacz R, Nemes A, Uejima T, Oehman J, Ceponiene I, Fabiani I, Garcia Martin A, Nishikawa H, Jurko AJR, Pasanisi E, Zagatina A, Stoian M, Monteagudo Ruiz JM, Lazaro Mendes AS, Ruiz Fernandez D, Chong A, Park YH, Mizariene V, Hlubocka Z, Ring L, Kruse E, Addetia K, Ciszek B, Thykattil M, Guile B, Lang RM, Mor-Avi V, Mahfouz RAGAB, Elzayat AHMED, Goda MOHAMD, Gad MARWA, Sansone F, Napoli F, Tonacci A, Raciti M, Landi P, Grande A, Ait-Ali L, Sveric K, Richter U, Strasser RH, Wunderlich C, Menting ME, Mcghie JS, Strachinaru M, Vletter WB, Geleijnse ML, Roos-Hesselink JW, Van Den Bosch AE, Kablak-Ziembicka A, Urbanczyk-Zawadzka M, Banys RP, Musialek P, Pieniazek P, Mleczko S, Zmudka K, Przewlocki T, Marton I, Domsik P, Kalapos A, Posfai E, Modok S, Borbenyi Z, Forster T, Takahashi L, Nishikawa H, Semba H, Sawada H, Yamashita T, Jurkevicius R, Petkeviciene J, Gustiene O, Tamuleviciute-Prasciene E, Motiejunaite J, Slapikas R, Pugliese NR, La Carrubba S, Antonini Canterin F, Colonna P, Caso P, Benedetto F, Citro R, Carerj S, Di Bello V, Moya Mur JL, Lazaro Rivera C, Rincon Diaz LM, Miguelena Hycka J, Garcia Lledo A, Jimenez Nacher JJ, Fernandez-Golfin C, Rodriguez-Roda J, Zamorano JL, Uejima T, Takahashi L, Semba H, Sawada H, Yamashita T, Jurko A, Jurko T, Mistinova-Polakova J, Sbrana F, Petersen C, Bigazzi F, Dal Pino B, Coceani M, Ripoli A, Pianelli M, Luciani R, Sampietro T, Zhuravskaya N, Vareldzhyan Y, Kamenskikh M, Shmatov D, Zamfir D, Vijiiac A, Pitic D, Tamasescu G, Onciul S, Onut R, Stefan C, Dorobantu M, Gonzalez-Gomez A, Izurieta C, Fernandez-Golfin C, Marco A, Alonso Salinas GL, Hinojar Baydes R, Garcia Martin A, Casas Rojo E, Zamorano JL, Ferreira AR, Moura Ferreira J, Leite L, Oliveira AP, Ribeiro N, Barbosa AJ, Mata Martins R, Ramos D, Pego M, Gamaza Chulian S, Diaz Retamino E, Camacho Freire S, Gutierrez Barrios A, Oneto Otero J, Bansal M, Grewal HK, Kasliwal RR, Wahi S, Lee SH, Lee DS, Hwang JM, Kim JS, Kim JH, Chun KJ, Bieseviciene M, Verseckaite R, Jonkaitiene R, Janenaite J, Jurkevicius R, Dostalova G, Hlubocky J, Novotny R, Vondracek V, Lindner J, Linhart A, Preston NK. Poster Session 1The imaging examination and quality assessmentP185Why did the normal values of the left and right atrial volumes increase in the recent chamber quantification guidelines update?P186Atrial electromechanical delay, Left Atrial mechanical functions and longitudinal left ventricular strain in pre-diabetic patientsP187A web-based platform for e-training in echocardiographyP188Righ atrial size as a marker of success in electrical cardioversion in patients with persistent atrial fibrillationP189Echocardiographic assessment of left atrial dimensions and function in a healthy populationP190Impact of carotid artery revascularization on the cognitive and functional outcome and cerebral flow on TCD and brain MRI in patients with symptomatic carotid artery stenosis: a preliminary reportP191Aortic elasticity is impaired in hypereosinophilic syndromeP192Disturbed intracardiac flow transit prognosticates early decompensation in dilated cardiomyopathyP193Ultrasound guided treatment in acute heart failureP194Determinants of impaired global longitudinal function in middle-aged subjects free of cardiovascular diseaseP195Left ventricular remodeling in asymptomatic heart failure: classification and prognostic evaluationP196Restricted displacement of lateral right ventricular wall: a physiopathological explanation of geometrical and functional cardiac changes after cardiac surgeryP197A novel method to image intracardiac flow stagnation for the risk stratification for thrombosisP198Magnetic resonance imaging of anomalous origin of the left coronary artery from the pulmonary artery in children older than 4 monthsP199Coronary flow reserve is improved by LDL apheresis in patients with familial hypercholesterolemia and chronic ischemic heart diseaseP200 High velocities in the proximal part of the coronary arteries during routine echocardiography can predict nearest prognosisP201Recovery potential of the right ventricular function in the setting of a first STEMI treated by primary PCI: an echocardiographic studyP202Severe aortic stenosis patients with preserved ejection fraction according to flow and gradient classification: prevalence and outcomesP203Is basal left ventricular ejection time able to predict the severity of aortic stenosis in patients with depressed ejection fraction?P204Acceleration time in aortic stenosis: a new echocardiographic diagnostic parameterP205Application of novel Doppler indices of stenosis severity in the assessment of rheumatic mitral stenosis beyond conventional valve area and transvalvular gradientsP206Comparison of conventional echo score in patients with symptomatic rheumatic mitral stenosis: transesophageal echocardiography versus transthoracic echocardiographyP207Speckle-tracking echocardiography in evaluation early left ventricular systolic dysfunction in asymptomatic aortic regurgitation patients with good left ventricular ejection fractionP208Expansible aortic ring annuloplasty: mid-term results of aortic valve repairP209Papillary muscle dysfunction: insights into mitral valve prolapse using speckle tracking imaging. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew236] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Barbier P, Berlot B, Semba H, Lembo M, Von Bibra H, Stoebe S, Monney P, Yiangou K, Scali MC, Simioniuc A, Cucco C, Guglielmo M, Savioli G, Dini FL, Moya Mur JL, Rodriguez Munoz D, Casas Rojo E, Jimenez Nacher JJ, Garcia Martin A, Hinojar R, Gonzalez Gomez A, Jug B, Fernandez Golfin C, Zamorano JL, Uejima T, Nishikawa H, Takahashi L, Sawada H, Yamashita T, Tufano A, Nardo A, Buonauro A, Fazio V, Schiano-Lomoriello V, Santoro C, Cocozza S, Di Minno G, Trimarco B, Galderisi M, Leclerque C, Schuster T, Zeynalova S, Wirkner S, Tarr A, Tautenhahn S, Jurisch D, Farese G, Pfeiffer D, Hagendorff A, Loeffler M, Hugelshofer S, Masci PG, Vincenti G, Rutz T, Schwitter J, Azina CH, Kassianides M, Ioannides M, Englezopoulos K, Tountas CH, Theodosis-Georgilas A, Beldekos D. Rapid Fire Abstract: Diastology in health and disease420Added value over current diastology indices of Doppler-derived pulmonary artery diastolic pressure to estimate pulmonary wedge pressure421Intraventricular velocity difference and velocity gradient along the early diastolic filling streamline as new measurements to assess diastolic dysfunction by vector flow mapping422A new testing approach for mapping two-dimensional intraventricular pressure gradient - initial report -423Left ventricular diastolic abnormalities other than valvular disease in antiphospholipid syndrome: an echocardiographic study424Quantification of diastolic dysfunction by the dominant impact of age on diastolic function - The biomathematical impact on risk factor assessment425Echocardiographic subanalysis: correlation of the E/E-ratio to NT-BNP426CMR-derived metrics of interstitial myocardial fibrosis: which parameter is better associated to the pathophysiology correlates of heart failure with preserved ejection-fraction?427Comparison of the myocardial stiffness of the left ventricle between elite athletes and the general population. Study with the use of tissue Doppler imaging. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew243] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ota T, Senaratne DNS, Preston NK, Ferrara F, Djikic D, Villemain O, Takahashi L, Niki K, Patrascu N, Benyounes N, Popa E, Diego Bellavia DB, Sundqvist M, Wei-Ting C, Papachristidis A, Djordjevic-Dikic A, Volpi C, Reis L, Nieto Tolosa J, Nishikawa H, D'angelo M, Testuz A, Mo YJ, Hashemi N, Toyota K, Nagamine K, Koide Y, Nomura T, Kurata J, Murakami Y, Kozuka Y, Ohshiro C, Thomas K, Townsend C, Wheeler S, Jacobson I, Elkington A, Balkhausen K, Bull S, Ring L, Gargani L, Carannante L, Russo V, D'alto M, Marra AM, Cittadini A, D'andrea A, Vriz O, Bossone E, Mujovic N, Dejanovic B, Peric V, Marinkovic M, Jankovic N, Orbovic B, Simic D, Sitefane F, Pernot M, Malekzadeh-Milani G, Baranger J, Bonnet D, Boudjemline Y, Uejima T, Nishikawa H, Semba H, Sawada H, Yamashita T, Sugawara M, Kayanuma H, Inoue K, Yagawa M, Takamisawa I, Umemura J, Yoshikawa T, Tomoike H, Mihalcea DJ, Mihaila S, Lungeanu L, Trasca LF, Bruja R, Neagu MS, Albu S, Cirstoiu M, Vinereanu D, Van Der Vynckt C, Gout O, Cohen A, Enache R, Jurcut R, Coman IM, Badea R, Platon P, Calin A, Beladan CC, Rosca M, Ginghina C, Popescu BA, Sonia Dell'oglio SD, Attilio Iacovoni AI, Calogero Falletta CF, Giuseppe Romano GR, Sergio Sciacca SS, Lissa Sugeng LS, Joseph Maalouf JM, Michele Pilato MP, Michele Senni MS, Cesare Scardulla CS, Francesco Clemenza FC, Salman K, Tornvall P, Ugander M, Chen ZC, Wang JJ, Fisch S, Liao RL, Roper D, Casar Demarco D, Papitsas M, Tsironis I, Byrne J, Alfakih K, Monaghan MJ, Boskovic N, Rakocevic I, Giga V, Tesic M, Stepanovic J, Nedeljkovic I, Aleksandric S, Kostic J, Beleslin B, Altman M, Annabi MS, Abouchakra L, Cucchini U, Muraru D, Badano LP, Ernande L, Derumeaux G, Teixeira R, Fernandes A, Almeida I, Dinis P, Madeira M, Ribeiro J, Puga L, Nascimento J, Goncalves L, Cambronero Sanchez FJ, Pinar Bermudez E, Gimeno Blanes JR, De La Morena Valenzuela G, Uejima T, Takahashi L, Semba H, Sawada H, Yamashita T, Lopez Fernandez T, Irazusta Cordoba FJ, Rosillo Rodriguez SO, Dominguez Melcon FJ, Meras Colunga P, Gemma D, Moreno Gomez R, Moreno Yanguela M, Lopez Sendon JL, Nguyen V, Mathieu T, Kerneis C, Cimadevilla C, Kubota N, Codogno I, Tubiana S, Estrellat C, Vahanian A, Messika-Zeitoun D, Ondrus T, Van Camp G, Di Gioia G, Barbato E, Bartunek J, Penicka M, Johnsson J, Gomez A, Alam M, Winter R. Poster Session 3The imaging examination and quality assessmentP626Value of mitral and tricuspid annular displacement to assess the interventricular systolic relationship in severe aortic valve stenosis : a Pilot studyP627Follow-up echocardiography in asymptomatic valve disease: assessing the potential economic impact of the European and American guidelines in a dedicated valve clinic, compared to standard care.P628The tricuspid valve: identification of optimal view for assessing for prolapseP629Right atrial volume by two-dimensional echocardiography in healthy subjectsP630Disturbance of inter and intra atrial conduction assessed by tissue doppler imaging in patients with medicaly controlled hypertension and prehypertension.P631Liver stiffness by shear wave elastography, new noninvasive and quantitative tool for acute variation estimation of central venous pressure in real-time?P632Weak atrial kick contribution is associated with a risk for heart failure decompensationP633Usefulness of wave intensity analysis in predicting the response to cardiac resynchronization therapyP634Early subclinical left ventricular systolic and diastolic dysfunction in gestational hypertension and preeclampsiaP635Clinical comparison of three different echocardiographic methods for left ventricular ejection fraction and LV end diastolic volume measurementP636Assessment of right ventricular-arterial coupling parameters by 3D echocardiography in patients with pulmonary hypertension receiving specific vasodilator therapyP637Prediction of right ventricular failure after left ventricular assist device implant: assessing usefulness of standard and strain echocardiographyP638Kinematic analysis of diastolic function using the novel freely available software Echo E-waves - feasibility and reproducibilityP639Evaluation of coronary flow velocity by Doppler echocardiography in the treatment of hypertension with the ARB: correlation to the histological cardiac fibrosisP640The clinical significance of limited apical ischaemia and the prognostic value of stress echocardiography - A contemporary study from a high volume centerP641Effects of intermediate stenosis of left anterior descending coronary artery on survival in patients with chronic total occlusion of right coronary arteryP642Left ventricular remodeling after a first myocardial infarction in patients with preserved ejection fraction at dischargeP643Left atrial size and acute coronary syndromes. Let is make simple.P644Influence of STEMI reperfusion strategy on systolic and diastolic functionP645Aortic valve resistance risk-stratifies low-gradient severe aortic stenosisP646Does permanent pacemaker implantation complicate the prognosis of patients after transcatheter aortic valve implantation?P647Influence of metabolic syndrome and diabetes on progression of calcific aortic valve stenosis - The COFRASA - GENERAC StudyP648Low referral for aortic valve replacement accounts for worse long-term outcome in low versus high gradient severe aortic stenosis with preserved ejection fractionP649The impact of right ventricular function from aortic valve replacement: A randomised study comparing minimally invasive aortic valve surgery and conventional open heart surgery. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew250] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nishikawa H, Enomoto H, Iwata Y, Kishino K, Shimono Y, Hasegawa K, Nakano C, Takata R, Nishimura T, Yoh K, Ishii A, Aizawa N, Sakai Y, Ikeda N, Takashima T, Iijima H, Nishiguchi S. Serum Wisteria floribunda agglutinin-positive Mac-2-binding protein for patients with chronic hepatitis B and C: a comparative study. J Viral Hepat 2016; 23:977-984. [PMID: 27476460 DOI: 10.1111/jvh.12575] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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] [Received: 03/10/2016] [Accepted: 07/07/2016] [Indexed: 12/12/2022]
Abstract
We compared Wisteria floribunda agglutinin-positive Mac-2-binding protein (WFA+ -M2BP) levels between patients with chronic hepatitis B (n=249) and chronic hepatitis C (n=386) based on the degree of liver fibrosis. We examined WFA+ -M2BP levels in patients with F4 (cirrhosis), F3 or more (advanced fibrosis) and F2 or more (significant fibrosis) in the two groups. We further examined the relationship between five fibrosis markers and the degree of fibrosis. The WFA+ -M2BP values ranged from 0.25 cut-off index (COI) to 12.9 COI in patients with hepatitis B and 0.34-20.0 COI in patients with hepatitis C (P<.0001). The median WFA+ -M2BP values in F4 in the two groups were 2.83 COI in patients with hepatitis B and 5.03 COI in patients with hepatitis C (P=.0046). The median WFA+ -M2BP values in F3 or more in the two groups were 1.79 COI in patients with hepatitis B and 3.79 COI in patients with hepatitis C (P<.0001). The median WFA+ -M2BP values in F2 or more in the two groups were 1.49 COI in the hepatitis B cohort and 3.19 COI in the hepatitis C group (P<.0001). Among five liver fibrosis markers, WFA+ -M2BP had the highest correlation coefficient (rs =.629) in terms of correlation with the degree of fibrosis in the patients with hepatitis C and had the second highest rs value (.415) in the hepatitis B group. Although WFA+ -M2BP could be a useful indicator of liver fibrosis, WFA+ -M2BP levels in the two groups significantly differed even in the same degree of fibrosis. Individual cut-off values in each aetiology for the degree of fibrosis should be determined.
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Affiliation(s)
- H Nishikawa
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - H Enomoto
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - Y Iwata
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - K Kishino
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - Y Shimono
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - K Hasegawa
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - C Nakano
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - R Takata
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - T Nishimura
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - K Yoh
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - A Ishii
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - N Aizawa
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - Y Sakai
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - N Ikeda
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - T Takashima
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - H Iijima
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - S Nishiguchi
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
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Fowell C, Verea Linares C, Jones R, Nishikawa H, Monaghan A. Venous malformations of the head and neck: current concepts in management. Br J Oral Maxillofac Surg 2016; 55:3-9. [PMID: 27894790 DOI: 10.1016/j.bjoms.2016.10.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 04/15/2016] [Accepted: 10/31/2016] [Indexed: 01/20/2023]
Abstract
Low-flow venous malformations are congenital lesions and they are the third most common vascular anomaly in the head and neck. In this paper, the third in a series of three educational reviews, we discuss current trends in their management, and include a summary of common sclerosant agents used in their control.
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Affiliation(s)
- C Fowell
- Consultant, Oral & Maxillofacial Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ.
| | - C Verea Linares
- Oral and Maxillofacial Surgery, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2WB
| | - R Jones
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2WB
| | - H Nishikawa
- Birmingham Children's Hospital NHS Foundation Trust, Steelhouse Lane, Birmingham, B4 6NH
| | - A Monaghan
- Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2WB
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Urano M, Maki Y, Nishikawa H, Kawai T, Shiraki N, Shibamoto Y. Diagnostic utility of a computer-aided diagnosis system for whole-body bone scintigraphy to detect bone metastasis in breast cancer patients. Ann Nucl Med 2016; 31:40-45. [PMID: 27686468 DOI: 10.1007/s12149-016-1132-5] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 09/19/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To compare the diagnostic ability of planar images (PI) and images obtained by a computer-aided diagnosis (CAD) system (Viewer for Standardized Bone Scintigraphies; VSBONE) of whole-body bone scintigraphy for detecting bone metastases in breast cancer patients. METHODS 81 women (median: 56 years; range: 32-79) with a history of breast cancer were included in this study. They underwent whole-body bone scintigraphy after intravenous injection of 740 MBq technetium-99m hydroxymethylene diphosphonate. A total of 1066 bones (162 regions of the skull, 657 regions of the spine and pelvis, 223 regions of the sternum and rib, 18 regions of the upper extremities, and 6 regions of the lower extremities) were analyzed. The PI alone, VSBONE images alone, and both PI and VSBONE images (PI + VSBONE) were interpreted independently by two radiologists to diagnose bone metastases, which were then confirmed by magnetic resonance imaging. The sensitivity and specificity for each modality were analyzed using Fisher's exact and McNemar tests. Inter-reviewer agreement was evaluated using a kappa statistic. RESULTS Bone metastases were confirmed in 43 patients with 442 positive lesions. The average sensitivity of PI, VSBONE images, and PI + VSBONE images was 40.8, 50.2, and 61.8 %, respectively. The average specificity was 97.8, 97.5, and 97.6 %, respectively. The kappa scores were 0.62 for PI, 0.69 for VSBONE, and 0.77 for PI + VSBONE. CONCLUSIONS VSBONE was superior to PI in regard to sensitivity for detecting bone metastases in breast cancer patients. However, an improved CAD system is required to decrease the number of false-negative results.
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Affiliation(s)
- Misugi Urano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Kawasumi 1, Mizuho-ku, Nagoya, Aichi, 4678601, Japan.
| | - Yumi Maki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Kawasumi 1, Mizuho-ku, Nagoya, Aichi, 4678601, Japan
| | - Hiroko Nishikawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Kawasumi 1, Mizuho-ku, Nagoya, Aichi, 4678601, Japan
| | - Tatsuya Kawai
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Kawasumi 1, Mizuho-ku, Nagoya, Aichi, 4678601, Japan
| | - Norio Shiraki
- Department of Radiology, Nagoya City West Medical Center, 1-1-1, Hirate-cho, Kita-ku, Nagoya, 462-8508, Japan
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Kawasumi 1, Mizuho-ku, Nagoya, Aichi, 4678601, Japan
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Shimohira M, Hashizume T, Sasaki S, Ohta K, Suzuki K, Nakagawa M, Ozawa Y, Sakurai K, Nishikawa H, Hara M, Shibamoto Y. Transcatheter Arterial Embolization for Hepatic Arterial Injury Related to Percutaneous Transhepatic Portal Intervention. Cardiovasc Intervent Radiol 2016; 40:291-295. [PMID: 27663693 DOI: 10.1007/s00270-016-1471-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/19/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE To assess the usefulness of transcatheter arterial embolization (TAE) for the hepatic arterial injury related to percutaneous transhepatic portal intervention (PTPI). MATERIALS AND METHODS Fifty-four patients, 32 males and 22 females with a median age of 68 years (range 43-82 years), underwent PTPI. The procedures consisted of 33 percutaneous transhepatic portal vein embolizations, 19 percutaneous transhepatic variceal embolizations, and 2 percutaneous transhepatic portal venous stent placements. Two patients with gastric varices underwent percutaneous transhepatic variceal embolization twice because of recurrence. Therefore, the total number of procedures was 56. Among them, hepatic arterial injury occurred in 6 PTPIs in 5 patients, and TAE was performed. We assessed technical success, complications related to TAE, and clinical outcome. Technical success was defined as the disappearance of findings due to hepatic arterial injury on digital subtraction angiography. RESULTS As hepatic arterial injuries, 4 extravasations and 2 arterioportal shunts developed. All TAEs were performed successfully. The technical success rate was 100 %. Complication of TAE occurred in 5 of 6 TAEs; 3 were focal liver infarction, not requiring further treatment, and 2 were biloma that required percutaneous drainage. Five TAEs in 4 patients were performed immediately after the PTPI, and these 4 patients were alive. However, one TAE was performed 10 h later, and the patient died due to multiple organ failure 2 months later although TAE was successful. CONCLUSION TAE is a useful treatment for hepatic arterial injury related to PTPI. However, it should be performed at an early stage.
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Affiliation(s)
- Masashi Shimohira
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
| | - Takuya Hashizume
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Shigeru Sasaki
- Department of Radiology, Nagoya City West Medical Center, Nagoya, 462-8508, Japan
| | - Kengo Ohta
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Kazushi Suzuki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Motoo Nakagawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Yoshiyuki Ozawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Keita Sakurai
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Hiroko Nishikawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
| | - Masaki Hara
- Department of Radiology, Nagoya City West Medical Center, Nagoya, 462-8508, Japan
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan
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Rodgers W, Lloyd T, Mizen K, Fourie L, Nishikawa H, Rakhorst H, Schmidt A, Kuoraite D, Bulstrode N, Dunaway D. Microvascular reconstruction of facial defects in settings where resources are limited. Br J Oral Maxillofac Surg 2015; 54:51-6. [PMID: 26608690 DOI: 10.1016/j.bjoms.2015.10.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 10/19/2015] [Indexed: 11/25/2022]
Abstract
The surgical treatment of defects caused by noma is challenging for the surgeon and the patient. Local flaps are preferred, but sometimes, because of the nature of the disease, there is not enough local tissue available. We describe our experience of free tissue transfer in Ethiopia. Between 2008 and 2014, 34 microsurgical procedures were done over 11 missions with the charity Facing Africa, predominantly for the treatment of defects caused by noma (n=32). The mean duration of operation was 442 minutes (range 200 - 720). Six minor wound infections were treated conservatively and did not affect outcome, a return to theatre was required in 4 patients with wound infections and one with a haemorrhage; 2 flaps failed and 2 partially failed, one patient developed an oronasal fistula, and one had an infection at the donor site that required a repeat graft. In settings where resources are limited, free flaps can be used when local tissue is not available and they cause less morbidity than pedicled tissue transfer.
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Affiliation(s)
- W Rodgers
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK.
| | - T Lloyd
- Department of Oral and Maxillofacial Surgery, University College London Hospital, UK
| | - K Mizen
- Department of Oral and Maxillofacial Surgery, The Mid Yorkshire Hospitals NHS Trust, UK
| | - L Fourie
- Department of Plastic Surgery, The Mid Yorkshire Hospitals NHS Trust, UK
| | - H Nishikawa
- Department of Craniofacial Surgery, The Birmingham Children's Hospital, UK
| | - H Rakhorst
- Department of Plastic, Reconstructive and Hand Surgery, ZGT Almelo, MST Enschede, The Netherlands
| | - A Schmidt
- Head of South Bavaria Section, Interplast Germany NGO
| | - D Kuoraite
- Department of Human Geography, Exeter University, UK
| | - N Bulstrode
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK
| | - D Dunaway
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK
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Rodgers W, Lloyd T, Fourie L, Nishikawa H, Kuoraite D, Dunaway D, Bulstrode N. Total reconstruction of the nose in settings where resources are limited. Br J Oral Maxillofac Surg 2015; 53:1001-6. [PMID: 26520001 DOI: 10.1016/j.bjoms.2015.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 10/07/2015] [Indexed: 11/29/2022]
Abstract
We describe a series of 8 patients who had total reconstruction of the nose during 4 separate missions to Ethiopia. The aetiology was noma (n=3), assault (n=2), acid burn (n=1), squamous cell carcinoma (n=1), and a sequela of meningococcal septicaemia (n=1). Reconstruction was with forehead flaps when adequate tissue was available (n=6) and with radial forearm flaps when it was not (n=2). Some reconstructive approaches require procedures to be done in stages, and in settings where resources are limited, difficulties with the continuity of care and provision for the management of complications, must be overcome.
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Affiliation(s)
- W Rodgers
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK.
| | - T Lloyd
- Department of Oral and Maxillofacial Surgery, University College London Hospital, UK
| | - L Fourie
- Department of Plastic Surgery, The Mid Yorkshire Hospitals NHS Trust, UK
| | - H Nishikawa
- Department of Craniofacial Surgery, The Birmingham Children's Hospital, UK
| | - D Kuoraite
- Department of Human Geography, Exeter University, UK
| | - D Dunaway
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK
| | - N Bulstrode
- Department of Plastic Surgery, Great Ormond Street Hospital for Children, UK
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Fowell C, Nishikawa H. Infantile haemangiomas of the head and neck – an update on modern management concepts and novel treatment modalities. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.085] [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: 10/22/2022]
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Maculins T, Nkosi PJ, Nishikawa H, Labib K. Tethering of SCF(Dia2) to the Replisome Promotes Efficient Ubiquitylation and Disassembly of the CMG Helicase. Curr Biol 2015; 25:2254-9. [PMID: 26255844 PMCID: PMC4562905 DOI: 10.1016/j.cub.2015.07.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 01/27/2023]
Abstract
Disassembly of the Cdc45-MCM-GINS (CMG) DNA helicase, which unwinds the parental DNA duplex at eukaryotic replication forks, is the key regulated step during replication termination but is poorly understood [1, 2]. In budding yeast, the F-box protein Dia2 drives ubiquitylation of the CMG helicase at the end of replication, leading to a disassembly pathway that requires the Cdc48 segregase [3]. The substrate-binding domain of Dia2 comprises leucine-rich repeats, but Dia2 also has a TPR domain at its amino terminus that interacts with the Ctf4 and Mrc1 subunits of the replisome progression complex [4, 5], which assembles around the CMG helicase at replication forks [6]. Previous studies suggested two disparate roles for the TPR domain of Dia2, either mediating replisome-specific degradation of Mrc1 and Ctf4 [4] or else tethering SCFDia2 (SCF [Skp1/cullin/F-box protein]) to the replisome to increase its local concentration at replication forks [5]. Here, we show that SCFDia2 does not mediate replisome-specific degradation of Mrc1 and Ctf4, either during normal S phase or in response to replication stress. Instead, the tethering of SCFDia2 to the replisome progression complex increases the efficiency of ubiquitylation of the Mcm7 subunit of CMG, both in vitro and in vivo. Correspondingly, loss of tethering reduces the efficiency of CMG disassembly in vivo and is synthetic lethal in combination with a disassembly-defective allele of CDC48. Residual ubiquitylation of Mcm7 in dia2-ΔTPR cells is still CMG specific, highlighting the complex regulation of the final stages of chromosome replication, about which much still remains to be learned. Replisome tethering of SCFDia2 promotes efficient ubiquitylation of the CMG helicase Loss of tethering and mutation of Cdc48 cause synthetic CMG disassembly defects
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Affiliation(s)
- Timurs Maculins
- Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK
| | - Pedro Junior Nkosi
- MRC Protein Phosphorylation and Ubiquitylation Unit, Sir James Black Centre, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK
| | - Hiroko Nishikawa
- Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK
| | - Karim Labib
- MRC Protein Phosphorylation and Ubiquitylation Unit, Sir James Black Centre, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK.
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41
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Kleibeuker JE, Zhong Z, Nishikawa H, Gabel J, Müller A, Pfaff F, Sing M, Held K, Claessen R, Koster G, Rijnders G. Electronic reconstruction at the isopolar LaTiO(3)/LaFeO(3) interface: an X-ray photoemission and density-functional theory study. Phys Rev Lett 2014; 113:237402. [PMID: 25526156 DOI: 10.1103/physrevlett.113.237402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Indexed: 06/04/2023]
Abstract
We report the formation of a nonmagnetic band insulator at the isopolar interface between the antiferromagnetic Mott-Hubbard insulator LaTiO_{3} and the antiferromagnetic charge transfer insulator LaFeO_{3}. By density-functional theory calculations, we find that the formation of this interface state is driven by the combination of O band alignment and crystal field splitting energy of the t_{2g} and e_{g} bands. As a result of these two driving forces, the Fe 3d bands rearrange and electrons are transferred from Ti to Fe. This picture is supported by x-ray photoelectron spectroscopy, which confirms the rearrangement of the Fe 3d bands and reveals an unprecedented charge transfer up to 1.2±0.2 e^{-}/interface unit cell in our LaTiO_{3}/LaFeO_{3} heterostructures.
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Affiliation(s)
- J E Kleibeuker
- Faculty of Science and Technology and MESA+Institute for Nanotechnology, University of Twente, 7500 AE Enschede, Netherlands and Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - Z Zhong
- Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria
| | - H Nishikawa
- Faculty of Biology-Oriented Science and Technology, Kinki University, Kinokawa 649-6493, Japan
| | - J Gabel
- Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - A Müller
- Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - F Pfaff
- Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - M Sing
- Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - K Held
- Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria
| | - R Claessen
- Physikalisches Institut, University of Würzburg, 97074 Würzburg, Germany
| | - G Koster
- Faculty of Science and Technology and MESA+Institute for Nanotechnology, University of Twente, 7500 AE Enschede, Netherlands
| | - G Rijnders
- Faculty of Science and Technology and MESA+Institute for Nanotechnology, University of Twente, 7500 AE Enschede, Netherlands
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42
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Ohta K, Shimohira M, Sasaki S, Iwata H, Nishikawa H, Ogino H, Hara M, Hashizume T, Shibamoto Y. Transarterial Fiducial Marker Placement for Image-guided Proton Therapy for Malignant Liver Tumors. Cardiovasc Intervent Radiol 2014; 38:1288-93. [PMID: 25366091 DOI: 10.1007/s00270-014-1013-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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] [Received: 06/21/2014] [Accepted: 08/31/2014] [Indexed: 11/24/2022]
Abstract
PURPOSE The aim of this study is to analyze the technical and clinical success rates and safety of transarterial fiducial marker placement for image-guided proton therapy for malignant liver tumors. METHODS AND MATERIALS Fifty-five patients underwent this procedure as an interventional treatment. Five patients had 2 tumors, and 4 tumors required 2 markers each, so the total number of procedures was 64. The 60 tumors consisted of 46 hepatocellular carcinomas and 14 liver metastases. Five-mm-long straight microcoils of 0.018 inches in diameter were used as fiducial markers and placed in appropriate positions for each tumor. We assessed the technical and clinical success rates of transarterial fiducial marker placement, as well as the complications associated with it. Technical success was defined as the successful delivery and placement of the fiducial coil, and clinical success was defined as the completion of proton therapy. RESULTS All 64 fiducial coils were successfully installed, so the technical success rate was 100 % (64/64). Fifty-four patients underwent proton therapy without coil migration. In one patient, proton therapy was not performed because of obstructive jaundice due to bile duct invasion by hepatocellular carcinoma. Thus, the clinical success rate was 98 % (54/55). Slight bleeding was observed in one case, but it was stopped immediately and then observed. None of the patients developed hepatic infarctions due to fiducial marker migration. CONCLUSION Transarterial fiducial marker placement appears to be a useful and safe procedure for proton therapy for malignant liver tumors.
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Affiliation(s)
- Kengo Ohta
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
| | - Masashi Shimohira
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
| | - Shigeru Sasaki
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, 462-8508, Japan.
| | - Hiromitsu Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, 462-8508, Japan.
| | - Hiroko Nishikawa
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, 462-8508, Japan.
| | - Hiroyuki Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, 462-8508, Japan.
| | - Masaki Hara
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City West Medical Center, Nagoya, 462-8508, Japan.
| | - Takuya Hashizume
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
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43
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Venugopal A, Bhatia S, Ahmad F, White N, Evans M, Nishikawa H, Solanki G, Rodrigues D, Dover M. Titanium in Paediatric Cranioplasty- The Birmingham Experience. Br J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.bjoms.2014.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Ike A, Shirai K, Nagata I, Sugihara M, Nishikawa H, Kawamura A, Mori K, Saku K. Significant differences in lipid profile associated with mace between hemodialysis (HD) and non-HD patients: FU-registry. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.768] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Abstract
There have been reported a number of cobalt complexes of N-aryl-salicylideneimines, but systematic study of the cobalt complexes of most N-alkyl-salicylideneimines has not been reported. Recently we have succeeded in preparing a series of cobalt (II)1 and cocalt (III)2,3 complexes with N-alkyl-salicylideneimines. The present communication is mainly concerned with a brief account of the systematic study about the preparation and relative stability of these complex compounds.
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Affiliation(s)
- H. Nishikawa
- Department of Chemistry, Faculty of Science, Osaka University, Nakanoshima. Osaka, Japan
| | - S. Yamada
- Department of Chemistry, Faculty of Science, Osaka University, Nakanoshima. Osaka, Japan
| | - R. Tsuchida
- Department of Chemistry, Faculty of Science, Osaka University, Nakanoshima. Osaka, Japan
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46
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Hamano Y, Kida H, Nishikawa H, Tripathi L, Ihara S, Arai T, Hirose M, Tada Y, Suenaga T, Mori M, Yano Y, Arase H, Mizuguchi K, Sakaguchi S, Inoue Y, Kumanogoh A. AB1025 Identification of Anti-Myxovirus Resistance Protein-1 Autoantibody as A Specific Marker for Idiopathic Nonspecific Interstitial Pneumonia. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2650] [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: 11/03/2022]
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47
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Sugimoto S, Oto T, Miyoshi K, Nishikawa H, Nakatani A, Yamane M, Miyoshi S. Lung Transplantation for Diffuse Panbronchiolitis. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.456] [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: 10/27/2022] Open
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48
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Okada M, Yamane M, Iga N, Nishikawa H, Yamamoto S, Otani S, Waki N, Hirayama S, Miyoshi K, Sugimoto S, Toyooka S, Oto T, Matsukawa A, Miyoshi S. MAPK/ERK Pathway Activation Leads to Severe Ischemia-Reperfusion-Induced Lung Injury. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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49
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Sekiguchi F, Matsumoto Y, Maeda Y, Tsubota-Matsunami M, Nishikawa H, Kawabata A. Biological activity of Helicobacter pylori components in mammalian cells: is it independent of proteinase-activated receptors? J Physiol Pharmacol 2012; 63:571-576. [PMID: 23388472] [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] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 12/12/2012] [Indexed: 06/01/2023]
Abstract
To clarify the relationship between Helicobacter pylori (H. pylori), a risk factor for gastritis, peptic ulcer and gastric cancer, and proteinase-activated receptors (PARs) that contribute to inflammatory responses, we determined and characterized the biological activity of H. pylori components in the mammalian cells that express PARs. The activity of H. pylori extracts was assessed in distinct cell lines with high expression of PAR1 (RGM1 cells), PAR2 (A549 cells), or PAR2 and PAR4 (HCT-15 cells). A PAR1-activating peptide (AP), but not H. pylori extracts, caused prostaglandin E₂ (PGE₂) release in RGM1 cells. On the other hand, H. pylori extracts produced release of PGE2 and interleukin-8 (IL-8) in A549 and HCT-15 cells, respectively, as a PAR2-AP did. The activity of H. pylori extracts in A549 cells was not affected by a proteinase inhibitor or exposure to boiling, but abolished by inhibitors of lipopolysaccharide (LPS), IRAK-1/4 or NF-κB. The activity of H. pylori extracts in HCT-15 cells was partially suppressed by boiling or the proteinase inhibitor. In rat platelets that express PAR4 and PAR3, like a PAR4-AP, H. pylori extracts induced aggregation when assessed in platelet rich plasma, an effect unaffected by the proteinase inhibitor, but did not cause aggregation of washed rat platelets that responded to the PAR4-AP or thrombin. The present study thus shows the biological activities of H. pylori extracts in A549 and HCT-15 cells or rat platelets, and suggests that they are not mediated by any PAR-activating proteinases, but may involve the other pathogenic factors including LPS.
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Affiliation(s)
- F Sekiguchi
- Division of Pharmacology and Pathophysiology, Kinki University School of Pharmacy, Higashi-Osaka, Japan
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50
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Toyokawa S, Nishikawa H, Ueji M, Motegi K, Kano K. Structural equation modeling of the relationship of bone mineral density and its risk factors in Japanese women. Environ Health Prev Med 2012; 6:41-6. [PMID: 21432236 DOI: 10.1007/bf02897308] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2000] [Accepted: 01/25/2001] [Indexed: 10/22/2022] Open
Abstract
Several factors have been reported as risk factors for the development of osteoporosis. In this study, we aimed to examine the relationship among lifestyle factors, biologic factors, and bone mineral density (BMD) using structural equation modeling (SEM). The subjects in the present study consisted of 866 postmenopausal Japanese women aged between 40 and 80 years old. In the analysis by the SEM, we employed a multiple basic model. As the structural variables, lifestyle factors and biologic factors were selected.The goodness of fit index (GFI) of the final model was 0.991 and the Akaike's information criteria (AIC) showed the lowest value in the peripheral models. The degree of association between biologic factors and BMD was -0.576 (direct association), 0.012 (indirect association), and -0.564 (total association). With regard to the correlation between lifestyle factors and BMD, the degrees of association were 0.085, -0.084, and 0.001, respectively.This study defined a pilot model for factors influencing BMD. Although is remains necessary to conduct further analyses with more valid measurements and constructs, this model indicated that the correlation between BMD and lifestyle factors was lower than that between BMD and biologic factors.
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Affiliation(s)
- S Toyokawa
- Graduate School of Medicine, University of Tsukuba, Tennoudai 1-1-1, 305-8575, Tsukuha, Ibaraki, Japan
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