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Fujii T, Aoyama N, Kida S, Taniguchi K, Yata T, Minabe M, Komaki M. Associations between Periodontal Status and Liver Function in the Japanese Population: A Cross-Sectional Study. J Clin Med 2023; 12:4759. [PMID: 37510874 PMCID: PMC10381182 DOI: 10.3390/jcm12144759] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
A relationship between periodontitis and liver function has been suggested. Indeed, patients with severe periodontal disease have been found to be more prone to liver dysfunction. The periodontal inflammatory surface area (PISA) has been shown to be a useful indicator of periodontal and systemic diseases. However, little information is available regarding whether the PISA is associated with liver function markers, such as gamma-glutamyltransferase (GGT), aspartate aminotransferase (AST), and alanine aminotransferase (ALT). This study aimed to clarify relationship between liver function markers, AST, ALT, and GGT, and PISA level in a cross-sectional study. The subjects were recruited between 2018 and 2021 at the Medical and Dental Collaboration Center of Kanagawa Dental College Hospital. A periodontal clinical examination was performed, and the PISA was calculated. Peripheral blood samples were collected, and serum levels of liver function markers were measured. The levels of liver function markers were examined in different values of PISA. Participants with high PISA scores were more likely to have increased GGT levels while AST and ALT were not changed with PISA. Increased GGT was found in 10.8% and 29.4% (p = 0.0056), increased AST in 48.2% and 52.9% (p = 0.62), and increased ALT in 35.2% and 47.0% (p = 0.20) among <300 mm2 and ≧300 mm2 PISA groups, respectively. It was found that males with a PISA of 300 mm2 or higher had an elevated level of serum GGT. In conclusion, elevated GGT was found in the high PISA group, particularly in males, while AST and ALT did not differ by PISA.
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Affiliation(s)
- Toshiya Fujii
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Norio Aoyama
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Sayuri Kida
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Kentaro Taniguchi
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Tomomi Yata
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Masato Minabe
- Bunkyou Dori Dental Clinic, 2-4-1 Anagawa, Chiba 263-0024, Chiba, Japan
| | - Motohiro Komaki
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
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Kida S, Aoyama N, Fujii T, Taniguchi K, Yata T, Iwane T, Yamamoto T, Tamaki K, Minabe M, Komaki M. Influence of Meal Sequence and Number of Teeth Present on Nutrient Intake Status: A Cross-Sectional Study. Nutrients 2023; 15:nu15112602. [PMID: 37299565 DOI: 10.3390/nu15112602] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Intake of fiber, as well as protein, and lipid preloading help to control postprandial glycemic elevation in people with type 2 diabetes and in healthy individuals. However, there are few studies on the awareness of meal sequence and nutrient intake status that consider oral conditions. This cross-sectional study aimed to determine the effects of meal sequences on nutrient intake status and whether these relationships were related to the number of teeth present. The subjects were recruited from the Medical and Dental Collaboration Center of Kanagawa Dental University Hospital between 2018 and 2021. Medical and dental examinations were performed, and a questionnaire was used to determine whether the diet consisted of vegetables, meat or fish, and carbohydrates in that order. Nutrient intake status was assessed using the brief-type self-administered diet history questionnaire. Data were collected from 238 participants. The group with awareness of meal sequence ingested increased nutrients such as n-3 fatty acids, total dietary fiber, calcium, and vitamin C. Saturated fatty acid intake increased in those with fewer teeth, while it was not significantly related to meal sequence. In conclusion, our results showed that meal sequence was associated with nutrient intake status. In addition, the intake of saturated fatty acids increased when many teeth were lost, regardless of meal sequence.
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Affiliation(s)
- Sayuri Kida
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Norio Aoyama
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Toshiya Fujii
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Kentaro Taniguchi
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Tomomi Yata
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Taizo Iwane
- Center for Innovation Policy, Graduate School of Health Innovation, Kanagawa University of Human Services, 3-25-10 Tonomachi, Kawasaki-ku, Kawasaki-shi 210-0821, Kanagawa, Japan
| | - Tatsuo Yamamoto
- Department of Dental Sociology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Katsushi Tamaki
- Department of Functional Recovery of TMJ and Occlusion, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
| | - Masato Minabe
- Bunkyou Dori Dental Clinic, 2-4-1 Anagawa, Chiba 263-0024, Chiba, Japan
| | - Motohiro Komaki
- Department of Periodontology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Kanagawa, Japan
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Aoyama N, Fujii T, Kida S, Nozawa I, Taniguchi K, Fujiwara M, Iwane T, Tamaki K, Minabe M. Association of Periodontal Status, Number of Teeth, and Obesity: A Cross-Sectional Study in Japan. J Clin Med 2021; 10:jcm10020208. [PMID: 33435628 PMCID: PMC7827095 DOI: 10.3390/jcm10020208] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 12/16/2022] Open
Abstract
Recent reports have shown an association between obesity and periodontitis, but the precise relationship between these conditions has yet to be clarified. The purpose of this study was to compare the status of periodontitis, tooth loss, and obesity. Participants comprised 235 patients at the Center for Medical and Dental Collaboration in Kanagawa Dental University Hospital between 2018 and 2020. Clinical examinations such as blood testing, body composition analysis, periodontal measurement, assessment of chewing ability, salivary testing, and oral malodor analysis were performed. Periodontal inflamed surface area (PISA) was significantly associated with the number of teeth and body mass index (BMI). The number of teeth was negatively associated with age, but positively with chewing ability. Chewing ability was associated negatively with age, and positively with high-sensitivity C-reactive protein (hsCRP). The level of methyl-mercaptan in breath and protein and leukocyte scores from salivary testing were positively associated with PISA. The rate of insufficient chewing ability was increased in subjects with hemoglobin (Hb)A1c ≥ 7%. The high PISA group showed increased hsCRP. BMI as an obesity marker was positively associated with PISA, indicating periodontal inflammation. Chewing ability was related to serum markers such as HbA1c and hsCRP.
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Affiliation(s)
- Norio Aoyama
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (T.F.); (S.K.); (K.T.); (M.M.)
- Correspondence: ; Tel.: +81-46-845-3160
| | - Toshiya Fujii
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (T.F.); (S.K.); (K.T.); (M.M.)
| | - Sayuri Kida
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (T.F.); (S.K.); (K.T.); (M.M.)
| | - Ichirota Nozawa
- Division of Prosthodontic Dentistry for Function of TMJ and Occlusion, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (I.N.); (M.F.); (K.T.)
| | - Kentaro Taniguchi
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (T.F.); (S.K.); (K.T.); (M.M.)
| | - Motoki Fujiwara
- Division of Prosthodontic Dentistry for Function of TMJ and Occlusion, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (I.N.); (M.F.); (K.T.)
| | - Taizo Iwane
- School of Nutrition and Dietetics, Faculty of Health and Social Services, Kanagawa University of Human Services, 1-10-1 Heisei-cho, Yokosuka, Kanagawa 238-8522, Japan;
| | - Katsushi Tamaki
- Division of Prosthodontic Dentistry for Function of TMJ and Occlusion, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (I.N.); (M.F.); (K.T.)
| | - Masato Minabe
- Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; (T.F.); (S.K.); (K.T.); (M.M.)
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Nomura M, Kida S, Uchiyama N, Yamashima T, Yamashita J, Yoshikawa J, Matsui O. Pre-Embolization Study of Ruptured Cerebral Aneurysms with Helical CT. Interv Neuroradiol 2016; 5 Suppl 1:219-23. [DOI: 10.1177/15910199990050s142] [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] [Received: 09/20/1999] [Accepted: 09/30/1999] [Indexed: 11/17/2022] Open
Abstract
Sixteen ruptured aneurysms in 16 patients considered endovascular embolizations were examined. The findings of axial source images (axial images) and reconstructed three-dimensional CT angiography (3D-CTA) of helical CT were compared to those of rotational digital subtraction angiography (DSA). The aneurysmal neck and arterial branches adjacent to the neck were closely investigated. In seven out of 16 cases (43.8%), information provided by axial images and/or 3D-CTA was more useful than that of rotational DSA in evaluating the aneurysmal neck and arterial branches. Helical CT can provide valuable information on ruptured aneurysms that cannot be obtained by rotational DSA in some patients. This technique is useful to obtain anatomical information about aneurysms and to select the best therapeutic method.
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Affiliation(s)
| | | | | | | | | | - J. Yoshikawa
- Radiology, Kanazawa University School of Medicine; Kanazawa
| | - O. Matsui
- Radiology, Kanazawa University School of Medicine; Kanazawa
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Kida S, Kato T. Microendophenotypes of psychiatric disorders: phenotypes of psychiatric disorders at the level of molecular dynamics, synapses, neurons, and neural circuits. Curr Mol Med 2015; 15:111-8. [PMID: 25732153 PMCID: PMC4460283 DOI: 10.2174/1566524015666150303002128] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 12/20/2014] [Accepted: 01/18/2015] [Indexed: 01/31/2023]
Abstract
Psychiatric disorders are caused not only by genetic factors but also by complicated factors such as environmental ones. Moreover, environmental factors are rarely quantitated as biological and biochemical indicators, making it extremely difficult to understand the pathological conditions of psychiatric disorders as
well as their underlying pathogenic mechanisms. Additionally, we have actually no other option but to perform biological studies on postmortem human brains that display features of psychiatric disorders, thereby resulting in a lack of experimental materials to characterize the basic biology of these disorders. From these
backgrounds, animal, tissue, or cell models that can be used in basic research are indispensable to understand biologically the pathogenic mechanisms of psychiatric disorders. In this review, we discuss the importance of microendophenotypes of psychiatric disorders, i.e., phenotypes at the level of molecular
dynamics, neurons, synapses, and neural circuits, as targets of basic research on these disorders.
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Affiliation(s)
- S Kida
- Department of Bioscience, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan.
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Nakajima Y, Kadoya N, Kida S, Ito K, Kanai T, Kishi K, Sato K, Dobashi S, Takeda K, Jingu K. SU-E-J-192: Comparative Effect of Different Respiratory Motion Management Systems. Med Phys 2015. [DOI: 10.1118/1.4924278] [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: 11/07/2022] Open
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Nakano M, Kida S, Masutani Y, Shiraki T, Yamamoto K, Shiraishi K, Nakagawa K, Haga A. SU-E-J-167: Improvement of Time-Ordered Four Dimensional Cone-Beam CT; Image Mosaicing with Real and Virtual Projections. Med Phys 2014. [DOI: 10.1118/1.4888220] [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: 11/07/2022] Open
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Imae T, Haga A, Saotome N, Kida S, Nakano M, Takeuchi Y, Shiraki T, Yano K, Yamashita H, Nakagawa K, Ohtomo K. SU-E-T-113: Dose Distribution Using Respiratory Signals and Machine Parameters During Treatment. Med Phys 2014. [DOI: 10.1118/1.4888443] [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: 11/07/2022] Open
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Kida S, Bal M, Kabus S, Loo B, Keall P, Yamamoto T. TH-E-BRF-02: 4D-CT Ventilation Image-Based IMRT Plans Are Dosimetrically Comparable to SPECT Ventilation Image-Based Plans. Med Phys 2014. [DOI: 10.1118/1.4889666] [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: 11/07/2022] Open
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Saotome N, Haga A, Imae T, Kida S, Nakano M, Yamashita H, Nakagawa K, Ohtomo K. SU-C-BRF-04: Delivered 4D Dose Calculation for Lung-VMAT Patients Using In- Treatment CBCT and LINAC Log Data. Med Phys 2014. [DOI: 10.1118/1.4889724] [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: 11/07/2022] Open
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Sakata D, Kida S, Nakano M, Masutani Y, Nakagawa K, Haga A. SU-E-I-99: Estimation of Effective Charge Distribution by Dual-Energy CT Reconstruction. Med Phys 2014. [DOI: 10.1118/1.4888049] [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: 11/07/2022] Open
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Nakagawa K, Haga A, Takahashi W, Yamashita H, Imae T, Kida S, Masutani Y, Kotoku J, Sakumi A, Ohtomo K. Accuracy Verification of 4D Cone Beam CT (CBCT)-Based Lung Tumor Registration by Way of In-Treatment 4D CBCT Analysis. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Saotome N, Kida S, Imae T, Sasaki K, Sakumi A, Masutani Y, Haga A, Gawa KN. SU-E-J-219: The Performance Test of EPID for In-Vivo Dosimetry. Med Phys 2013. [DOI: 10.1118/1.4814431] [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: 11/07/2022] Open
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Kida S, Nakano M, Masutani Y, Nakagawa K, Haga A. SU-E-I-14: Improvement of Four Dimensional Cone Beam CT Image Quality with Iterative Reconstruction. Med Phys 2013. [DOI: 10.1118/1.4814122] [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: 11/07/2022] Open
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Haga A, Kotoku J, Kida S, Masutani Y, Yamashita H, Takahashi W, Imae T, Nakagawa K. SU-C-141-06: Registration Accuracy with Four-Dimensional Cone-Beam CT for Lung Cancer Treatment. Med Phys 2013. [DOI: 10.1118/1.4813966] [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: 11/07/2022] Open
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Nakano M, Kida S, Masutani Y, Shiraki T, Shiraishi K, Yamamoto K, Nakagawa K, Haga A. SU-E-J-122: Time-Ordered Four Dimensional Cone-Beam CT. Med Phys 2013. [DOI: 10.1118/1.4814334] [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: 11/07/2022] Open
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Nakagawa K, Haga A, Takahashi W, Yamashita H, Imae T, Kida S, Masutani Y, Sakumi A, Ohtomo K. PD-0043: Accuracy comparison of 3D and 4D CBCT based lung tumor registrations by way of in-treatment 4D CBCT analysis. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32349-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Takahashi W, Haga A, Yamamoto N, Yamashita H, Imae T, Kida S, Sakumi A, Ohtomo K, Kamada T, Nakagawa K. PO-0676: Verification system for image-guided radiation therapy by using in-treatment 4D CBCT. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32982-0] [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: 11/27/2022]
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Kida S, Ichiji M, Watanabe J, Hirasawa I. Particle size distribution and shape control of Au nanoparticles used for particle gun. Front Chem Sci Eng 2013. [DOI: 10.1007/s11705-013-1313-x] [Citation(s) in RCA: 5] [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: 11/28/2022]
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Saotome N, Kida S, Haga A, Masutani Y, Ohtomo K, Nakagawa K. SU-E-J-33: Geometric Agreement Check for Imaging System with Radiation Beam by KV and MV-CBCT. Med Phys 2012; 39:3659. [DOI: 10.1118/1.4734866] [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: 11/07/2022] Open
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Haga A, Nakagawa K, Yamashita H, Takahashi W, Sakumi A, Masutani Y, Kida S, Saotome N, Itoh S, Shiraki T, Ohtomo K. SU-E-J-203: Determination of PTV Margin for Lung Tumor Using In-Treatment 4D CBCT. Med Phys 2012; 39:3699. [PMID: 28519043 DOI: 10.1118/1.4735043] [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: 11/07/2022] Open
Abstract
PURPOSE To determine a planning target volume (PTV) margin for lung cancer patients using a four-dimensional cone-beam CT (4D CBCT) acquired during volumetric modulated arc therapy (VMAT) treatment. METHODS A VMAT plan for lung cancer patients was created by Pinnacle v9.0 (Philips) treatment planning system (TPS), where the gross target volume (GTVs) in each breathing phase was delineated by using 4D-planning CT scan (TOSHIBA and ANZAI). The VMAT treatment was performed with a stereotactic body frame after the registration using Elekta X-ray volume imaging (XVI) unit. Simultaneous cone-beam projection images were acquired for 3 or 4 fractions of 10 patients. The in-treatment 4D CBCT was reconstructed by dividing into four breathing phase bins. A total of 38 in-treatment 4D-CBCT sets were exported to Pinnacle TPS. The isocenter of in-treatment 4D CBCT was matched with that of 4D-planning CT. The tumor motion during treatment was manually tracked on in-treatment 4D CBCT, and the center-of-mass (COM) location of the tumor was estimated. Analyzing the tumor regions observed by in-treatment 4D CBCT, a PTV margin in our system was derived. RESULTS The average difference in COM location of the tumor was less than 1mm for all directions, while the standard deviations (SD's) were about 1.3mm, 1.6mm, and 2.1mm for the lateral, the vertical, and the longitudinal directions, respectively. The large discrepancy more than 3mm was observed for one patient. The required PTV margin was about 3-4mm for the lateral and the vertical directions, whereas it was about 5mm for the longitudinal direction. CONCLUSIONS The uncertainties of the tumor motion caused by respiration were observed by in-treatment 4D CBCT images. It was feasible to determine the PTV margin from 4D volume images. K. Nakagawa receives research funding from Elekta.
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Affiliation(s)
- A Haga
- The University of Tokyo Hospital, Tokyo, Japan
| | - K Nakagawa
- The University of Tokyo Hospital, Tokyo, Japan
| | - H Yamashita
- The University of Tokyo Hospital, Tokyo, Japan
| | - W Takahashi
- The University of Tokyo Hospital, Tokyo, Japan
| | - A Sakumi
- The University of Tokyo Hospital, Tokyo, Japan
| | - Y Masutani
- The University of Tokyo Hospital, Tokyo, Japan
| | - S Kida
- The University of Tokyo Hospital, Tokyo, Japan
| | - N Saotome
- The University of Tokyo Hospital, Tokyo, Japan
| | - S Itoh
- The University of Tokyo Hospital, Tokyo, Japan
| | - T Shiraki
- The University of Tokyo Hospital, Tokyo, Japan
| | - K Ohtomo
- The University of Tokyo Hospital, Tokyo, Japan
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Nakagawa K, Masutani Y, Haga A, Yamashita H, Takahashi W, Sakumi A, Kida S, Saotome N, Ohtomo K, Yoda K. EP-1458 A COMPARISON OF THREE REGISTRATION METHODS USING 4D PLANNING CT AND ON-BOARD 4D CONE-BEAM CT FOR LUNG VMAT. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71791-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Saotome N, Sakumi A, Kida S, Onoe T, Haga A, Masutani Y, Ohtomo K, Yamashita H, Nakagawa K. OC-0470 DOSE COMPARSION BETWEEN DIFFERENT RESPIRATORY PHASES DURING LUNG VMAT DELIVERY USING IN-TREATMENT 4D CONE-BEAM CT. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70809-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kotoku J, Haga A, Saegusa S, Arai N, Kobayashi T, Waga K, Sakumi A, Itoh S, Kida S, Saotome N, Nakagawa K, Kanemitsu H, Ishioka K. MO-F-BRB-05: Dose Calculation of KV Cone-Beam CT by Use of Pinnacle. Med Phys 2011. [DOI: 10.1118/1.3613006] [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: 11/07/2022] Open
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Saotome N, Kida S, Onoe T, Sasaki K, Imae T, Tanaka K, Sakumi A, Masutani Y, Haga A, Nakagawa K. SU-E-T-530: Projection Image Correction for 4D VMAT-CT. Med Phys 2011. [DOI: 10.1118/1.3612492] [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: 11/07/2022] Open
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Shiraishi K, Haga A, Katsutake S, Saotome N, Kida S, Sakumi A, Onoe T, Yamamoto K, Ohtomo K, Keiichi N. 1266 poster ANALYSIS OF PATIENT SETUP UNCERTAINTIES BY USING IN-TREATMENT CONE-BEAM CT FOR PROSTATE CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71388-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nakagawa K, Haga A, Yamashita H, Kida S, Saotome N, Sakumi A, Imae T, Ohtomo K, Masutani Y, Yoda K. 1175 poster BEAM'S EYE VIEW BASED VERIFICATION OF ACTUAL DELIVERY USING IN-TREATMENT 4D CONE-BEAM CT. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71297-x] [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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Haga A, Sakumi A, Itoh S, Kon D, Kida S, Saotome N, Ohtomo K, Shiraishi K, Nakagawa K, Iwai Y. 1333 poster VMAT WITH MONACO, THE NOVEL TPS: PRESENT STATUS AND FUTURE APPLICATION. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71455-4] [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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Haga A, Kida S, Okano Y, Itoh S, Matsuura T, Saotome N, Sakumi A, Kotoku J, Kenshiro S, Nakagawa K, Iwai Y. SU-GG-T-135: Comparison of Treatment Planning Systems in Elekta Volumetric Modulated Arc Therapy (Elekta VMAT) - Prostate Cancer Study. Med Phys 2010. [DOI: 10.1118/1.3468525] [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: 11/07/2022] Open
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Kida S, Matsuura T, Haga A, Masutani Y, Itoh S, Saotome N, Sakumi A, Kotoku J, Tanaka K, Nakagawa K. SU-GG-I-25: CBCT Reconstruction during VMAT Delivery Using Elekta Synergy System. Med Phys 2010. [DOI: 10.1118/1.3468058] [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: 11/07/2022] Open
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Kawai S, Ogawa M, Ishibashi K, Kondo Y, Matsuoka T, Homma T, Fukunaka Y, Kida S. Transient mass transfer rate of Cu2+ ion caused by copper electrodeposition with alternating electrolytic current. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.02.039] [Citation(s) in RCA: 7] [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: 10/19/2022]
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Haga A, Nakagawa K, Shiraishi K, Itoh S, Kida S, Ohtomo K, Saegusa S, Katsutake S, Yoda K, Pellegrini R. PROPERTY OF VOLUMETRIC MODULATED ARC THERAPY (VMAT) FOR PROSTATE CANCER USING ELEKTA SYNERGY AND ERGO++ TREATMENT PLANNING SYSTEM. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73167-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Haga A, Nakagawa K, Shiraishi K, Itoh S, Saegusa S, Imae T, Sasaki K, Kida S, Terahara A, Yoda K. SU-FF-T-247: Influence of Gantry Angle, Multi-Leaf Collimator (MLC), and Jaw Position Errors to Dose Distribution in Volumetric Modulated Arc Therapy (VMAT). Med Phys 2009. [DOI: 10.1118/1.3181723] [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: 11/07/2022] Open
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Shige S, Watanabe T, Sasaki H, Kubota T, Kida S, Okamoto K. Validation of western and eastern Pacific rainfall estimates from the TRMM PR using a radiative transfer model. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jd009002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Uchida S, Sakai S, Furuichi T, Hosoda H, Toyota K, Ishii T, Kitamoto A, Sekine M, Koike K, Masushige S, Murphy G, Silva AJ, Kida S. Tight regulation of transgene expression by tetracycline-dependent activator and repressor in brain. Genes Brain Behav 2006; 5:96-106. [PMID: 16436193 DOI: 10.1111/j.1601-183x.2005.00139.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Methods to temporally and spatially regulate gene mutations will provide a powerful strategy to investigate gene function in the brain. To develop these methods, we have established a tightly regulated system for transgene expression in the forebrain using both a tetracycline (Tc)-dependent transcription activator (rtTA) and a repressor (TetR-Kruppel-associated box). In this system, the repressor binds to the Tc-responsive element (TRE) in the absence of doxycycline (Dox), leading to the repression of leaky activation of TRE-mediated transcription caused by weak binding of rtTA to TRE. Upon Dox administration, only the activator binds to TRE and activates transcription. We tested this system in cultured cells by bicistronically expressing both the regulators using an internal ribosome entry site (IRES). In COS-1, HeLa and SHSY5Y cells, leaky transcription activation led by rtTA in the absence of Dox was repressed without decreasing the level of activated transcription in the presence of Dox. Using this system, transgenic mice were produced that express both the regulators using IRES in the forebrain under the control of the alphaCaMKII promoter and were bred with transgenic mice carrying the TRE-dependent reporter transgene. In reverse transcription-polymerase chain reaction and in situ hybridization analyses of the forebrain in adult double transgenic mice, the treatment of Dox induces reporter mRNA expression, which was not detected before the treatment and after the withdraw of Dox following the treatment. These results indicate that this system allows the tight regulation of transgene expression in a Dox-dependent fashion in the forebrain and will be useful in investigating gene function in the brain.
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Affiliation(s)
- S Uchida
- Department of Agricultural Chemistry, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan
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Hasegawa M, Fujisawa H, Hayashi Y, Tachibana O, Kida S, Yamashita J. Surgical pathology of spinal schwannoma: has the nerve of its origin been preserved or already degenerated during tumor growth? Clin Neuropathol 2005; 24:19-25. [PMID: 15696780] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
OBJECTIVE This study was aimed to understand ultrastructural pathology of nerves of tumor origin of spinal schwannomas, which has not been reported so far, in order to understand the mechanism of the postoperative functional restoration after the nerve transection. METHODS From 13 patients who underwent sacrifice of an affected nerve root at total removal of spinal schwannomas (C2 conus), the proximal (spinal cord side, n = 12) and distal (dorsal root ganglion side, n = 10) stumps of the nerves of the tumor origin were collected and examined by light and electron microscope, followed by morphometric analysis (n = 9). RESULTS Almost all of affected nerves at both proximal and distal to the lesion were composed of well-preserved myelin sheath and axons with mild disturbance of endo- and perineurial structures at light microscopic level except one case, which showed severe fibrosis. Electron-microscopically, regenerated axons with thin myelin were found in part in the proximal and distal nerves with few macrophages in three cases. The area of nerves (mm2), density of myelinated axons (axons/mm2) and total number of myelinated axons in the proximal stump (0.552 +/- 0.430, 10,400 +/- 5,240 and 5,480 +/- 4,790) was approximately 70%, 80% and 60%, respectively, of those in the distal stump (0.765 +/- 0.333, 12,400 +/- 5,180 and 9,970 +/- 8,630). CONCLUSIONS This data combined with no permanent deficits after nerve transection suggest that the nerves of tumor origin are in the processes of slowly progressed deterioration with repeated degeneration and regeneration/remyelination, and the postoperative rapid recovery from the transient neurological deficit may be explained by functional compensation by the adjacent non-affected nerves with slow tumor growth.
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Affiliation(s)
- M Hasegawa
- Department of Neurosurgery, Division of Neuroscience, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
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Josselyn SA, Kida S, Silva AJ. Inducible repression of CREB function disrupts amygdala-dependent memory. Neurobiol Learn Mem 2004; 82:159-63. [PMID: 15341801 DOI: 10.1016/j.nlm.2004.05.008] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2004] [Revised: 05/18/2004] [Accepted: 05/19/2004] [Indexed: 11/24/2022]
Abstract
Evidence from Aplysia, Drosophila, mice, and rats indicates that the CREB (cAMP/Ca2+ responsive element binding protein) family of transcription factors is critical for long-term memory. Recent findings, however, suggest that performance abnormalities may contribute to the memory deficits attributed to CREB manipulations in mammals. To clarify the role of CREB in memory, we used a paradigm, conditioned taste avoidance, that places few performance demands on the subject. We show that lesioning or blocking protein synthesis in the basolateral amygdala of mice disrupts conditioned taste aversion. Furthermore, either chronically or acutely disrupting CREB function in two different types of genetically modified mice blocks memory for conditioned taste aversion measured 24 h following training. Together, these findings indicate that CREB-mediated transcription and protein synthesis are required for conditioned taste aversion memory.
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Affiliation(s)
- S A Josselyn
- Department of Neurobiology, Brain Research Institute, 695 Young Drive South, Gonda Building, UCLA, Los Angeles, CA 90095-1761, USA
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Hayashi Y, Nakau H, Shima H, Tohma Y, Kida S, Yamashita J. Infarction in Anterior Inferior Cerebellar Artery Territory Caused by Occlusion of Vertebral Artery. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1477-6804(03)00013-x] [Citation(s) in RCA: 3] [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: 10/27/2022]
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Suzuki M, Matsui O, Kobayashi K, Ueda F, Saitoh C, Katagiri A, Sanada J, Tawara M, Terayama N, Kawashima H, Kida S, Yamashita J. Contrast-enhanced MRA for investigation of cerebral arteriovenous malformations. Neuroradiology 2003; 45:231-5. [PMID: 12687306 DOI: 10.1007/s00234-003-0940-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2002] [Accepted: 04/12/2002] [Indexed: 10/20/2022]
Abstract
We evaluated contrast-enhanced MRA (enhanced 3-D fast gradient-echo [efgre3d] with spectral inversion recovery) for identification of 15 intracranial arteriovenous malformations (AVMs) in 14 patients. Demonstration of the feeding arteries was classified as good for 16 examinations on maximum-intensity projections and multiprojection volume reconstruction images. The nidus was seen well in all patients. Definition of the draining veins was good or fair except for one poor result. Therapeutic effects were clearly demonstrated in three follow-up series. Contrast-enhanced MRA using efgre3d is useful for delineation of AVMs and for follow-up after treatment.
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Affiliation(s)
- M Suzuki
- Department of Radiological Technology, Kanazawa University School of Health Science, 5-11-80 Kodatsuno, 920-0942 Kanazawa, Japan.
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41
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Quagliano JV, Summers JT, Kida S, Vallarino LM. The Donor Properties of Positively Charged Ligands. Metal Complexes of the β-Aminoethyltrimethylammonium and γ-Aminopropyltrimethylammonium Cations. Inorg Chem 2002. [DOI: 10.1021/ic50021a018] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Nakamoto K, Suzuki M, Ishiguro T, Kozuka M, Nishida Y, Kida S. Resonance Raman spectra of molecular oxygen adducts of N,N'-ethylenebis(salicylideniminato)cobalt(II), [BCo(salen)]2O2 (B = pyridine, pyridine N-oxide, and dimethylformamide). Inorg Chem 2002. [DOI: 10.1021/ic50211a066] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Quagliano JV, Kida S, Fujita J. Preparation and Infrared Studies of Metal Complexes Containing the Zwitterion Ligand Betaine, (CH3)3NCH2COO-. J Am Chem Soc 2002. [DOI: 10.1021/ja00864a009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Nakamoto K, Nonaka Y, Ishiguro, Urban MW, Suzuki M, Kozuka M, Nishida Y, Kida S. Resonance Raman and infrared spectra of molecular oxygen adducts of N,N'-ethylenebis(2,2-diacetylethylideneaminato)cobalt(II). J Am Chem Soc 2002. [DOI: 10.1021/ja00376a024] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Hasegawa M, Muramatsu N, Tohma Y, Fukaya K, Fujisawa H, Hayashi Y, Tachibana O, Kida S, Yamashita J, Saito K. Expression of E-cadherin-catenin complex in human benign schwannomas. Histol Histopathol 2002; 17:39-44. [PMID: 11813884 DOI: 10.14670/hh-17.39] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Ca2+-dependent cell adhesion molecule E-cadherin has been known to express in normal and reactive Schwann cells in rodents, and to play an important role in Schwann cell-Schwann cell adhesion and maintenance of peripheral nervous tissue architecture. However, little is known about expression of E-cadherin in schwannomas. The aim of the present study was to investigate the cellular expression and localization of E-cadherin, and its associated protein, alpha E-, alpha N- and beta-catenins in human schwannomas, which are supposed to derive from Schwann cells. We tested the hypothesis that these proteins might show an altered expression/distribution in schwannoma cells which correlates with their neoplastic behavior, including sparse cell-cell contact, as seen those in meningiomas and various carcinomas. In human schwannomas, however, E-cadherin, alpha E-catenin, and beta-catenin were detected by western blotting and immunohistochemistry, whereas alpha N-catenin was not. Immunoprecipitation using anti-E-cadherin antibody resulted in alpha E-catenin forming a complex with E-cadherin. SSCP analysis revealed no mutations in the transmembrane domain or in intracellular catenin-binding site of E-cadherin. These data suggest that the E-cadherin-alpha E-catenin complex is well preserved in human schwannoma cells, which is compatible with its benign behavior, and these molecules might be used as additional cell markers of Schwann cell-derived tumors.
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Affiliation(s)
- M Hasegawa
- Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Japan.
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Hasegawa M, Fujisawa H, Hayashi Y, Tachibana O, Kida S, Yamashita J. Surgical pathology of spinal schwannomas: a light and electron microscopic analysis of tumor capsules. Neurosurgery 2001; 49:1388-92; discussion 1392-3. [PMID: 11846938 DOI: 10.1097/00006123-200112000-00016] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2000] [Accepted: 03/19/2001] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE Although spinal schwannomas are often encountered, the pathology of the tumor capsule has not been reported. In this study, we describe the ultrastructural pathology of the tumor capsule of spinal schwannomas. METHODS In 18 patients who underwent total removal of spinal schwannomas (C2-conus), the tumor capsule was collected and examined by light and electron microscopy. RESULTS The thickness of the tumor capsule ranged from 15 to 800 microm (mostly 30-100 microm) and was composed of three layers from the surface to the center: 1) a thinly stretched nerve tissue layer; 2) a fibrous layer of fibrocytes, abundant collagen fibers, and tumor vessels; and 3) a thin transitional layer intermingled with fibrous components and tumor cells. The thickness of each layer varied in different regions of the surface. There was no clear separation between the tumor capsule and the neoplastic tissue, even on the electron microscopic level. A number of nerve fibers ran through the fibrous layer and beneath the capsule as well as in the nerve tissue layer. CONCLUSION Compared with vestibular schwannomas, which have been reported to be covered by an extremely thin layer (3-5 microm) of connective tissue, spinal schwannomas were well encapsulated. The capsule was composed of three distinct components; however, the cleavage between thin capsule and tumor cells was indistinct, and the thickness of the axon-containing capsule varied from site to site. Therefore, resection of the nerve of tumor origin, rather than enucleation, would be justified to avoid tumor recurrence. Surgeons should be aware of this pathology when performing the procedure.
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Affiliation(s)
- M Hasegawa
- Department of Neurosurgery, Kanazawa University School of Medicine, Kanazawa, Japan.
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Nomura M, Kida S, Uchiyama N, Sanada J, Yoshikawa J, Yamashima T, Yamashita J, Matsui O. CT during selective arteriography: anatomical assessment of unruptured intracranial aneurysms before endovascular treatment. Neuroradiology 2001; 43:735-41. [PMID: 11594422 DOI: 10.1007/s002340100562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Our aim was to investigate the usefulness of helical CT during selective angiography (CT arteriography) in pretreatment assessment of unruptured intracranial aneurysms. We studied 47 unruptured aneurysms in 34 prospectively recruited patients for whom endovascular embolisation was initially considered. As pretreatment assessment, we performed rotational digital subtraction angiography (DSA) followed by CT arteriography. The findings on axial source images (axial images) and reconstructed three-dimensional CT angiography (3D-CTA) of CT arteriography were compared to those of rotational DSA, with particular attention to the neck of the aneurysm and arterial branches adjacent to it. Information provided by CT arteriography was more useful than that of rotational DSA as regards the neck in 25 (53%) of 47 cases and as regards branches in 18 (49%) of 37 aneurysms. On axial images, small arteries such as the anterior choroidal artery were seen in some cases. CT arteriography can provide valuable additional information about unruptured aneurysms, which cannot be obtained by rotational DSA alone. This technique is useful for obtaining anatomical information about aneurysm anatomy and for deciding the therapeutic strategy.
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Affiliation(s)
- M Nomura
- Department of Neurosurgery, Kanazawa University School of Medicine, Japan.
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Yamauchi J, Iwamoto T, Kida S, Masushige S, Yamada K, Esashi T. Tocopherol-associated protein is a ligand-dependent transcriptional activator. Biochem Biophys Res Commun 2001; 285:295-9. [PMID: 11444841 DOI: 10.1006/bbrc.2001.5162] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vitamin E is a term that encompasses a group of potent, lipid-soluble, chain-breaking antioxidants. Structural analysis reveals that molecules having vitamin E activity include four isomers (alpha, beta, gamma, and delta) of both tocopherols and tocotrienols. Alpha-tocopherol has been shown to have the highest biological vitamin E activity in mammalian tissues based on fetal resorption assays, and it reverses vitamin E deficiency symptoms. Although the molecular functions fulfilled specifically by alpha-tocopherol have yet to be fully described, it is unlikely that they are limited to general antioxidant functions. Here we show the functional characterization of alpha-tocopherol associated protein, TAP, which displays significant sequence similarity to the alpha-tocopherol transfer protein. Ligand competition analysis showed that recombinant TAP binds to alpha-tocopherol but not to other isomers of tocopherols. Using GFP fusion protein expression system, we observed that TAP translocates from cytosol to nuclei in alpha-tocopherol-dependent fashion. Transient transfection experiment showed that TAP activates transcription of the reporter gene in alpha-tocopherol-dependent manner. These results suggest that the biological function of alpha-tocopherol is not only as an antioxidant but also as a transcriptional regulator of gene expression via association with a transcription factor TAP.
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Affiliation(s)
- J Yamauchi
- Division of Applied Food Research, National Institute of Health and Nutrition, 1-23-1 Toyama, Shinjyuku, Japan.
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49
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Nomura M, Kida S, Kita D, Hasegawa M, Matsui O, Yamashita J. Anomalous origin of anterior choroidal artery associated with an aneurysm. Acta Neurochir (Wien) 2001; 142:1067-8. [PMID: 11086819 DOI: 10.1007/s007010070065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Nomura
- Department of Neurosurgery, Kanazawa University School of Medicine, Japan
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50
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Uchiyama N, Kida S, Watanabe T, Yamashita J, Matsui O. Improved cerebral perfusion and metabolism after stenting for basilar artery stenosis: technical case report. Neurosurgery 2001; 48:1386-91; discussion 1391-2. [PMID: 11383748 DOI: 10.1097/00006123-200106000-00048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE Recent advances in stent technology have allowed the introduction of more flexible stents that may be tracked more easily in the intracranial vessels. We present a patient with improved cerebral blood flow and metabolism as assessed by positron emission tomography after stent-assisted angioplasty for symptomatic basilar artery stenosis. CLINICAL PRESENTATION A 62-year-old man, who had undergone left superficial temporal artery to middle cerebral artery bypass surgery for left internal carotid artery occlusion 10 years previously, presented with dizziness, blurred vision, and memory disturbance. Angiography revealed severe stenosis of the proximal basilar artery. Positron emission tomographic scans revealed decreased cerebral blood flow associated with increased oxygen extraction fraction in the entire brain, particularly in the posterior circulation and the left middle cerebral artery territory. Despite medical treatment, the patient experienced worsening visual disturbance and right-sided motor weakness. INTERVENTION Ticlopidine and aspirin were used as antiplatelet agents. In addition, we used argatroban, which is a direct thrombin inhibitor, as an anticoagulant during the procedure. Predilation with a coronary artery balloon was performed, followed by placement of a GFX 3- by 8-mm stent (Arterial Vascular Engineering, Santa Rosa, CA), with excellent angiographic results. The patient made a good neurological recovery, and the postoperative positron emission tomographic scan demonstrated increases in both cerebral blood flow and cerebral metabolic rate of oxygen with a normalization of oxygen extraction fraction. CONCLUSION Stent-assisted angioplasty can provide a favorable clinical course as well as improved cerebral perfusion and metabolism for a patient with basilar artery stenosis. Long-term follow-up data and additional clinical experience are required to assess the durability of this approach.
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Affiliation(s)
- N Uchiyama
- Department of Neurosurgery, Kanazawa University School of Medicine, Japan
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