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Nishiyama A, Sato S, Sakaguchi H, Kotani H, Yamashita K, Ohtsubo K, Mizuguchi K, Ikeda H, Iino K, Takemura H, Takeuchi S. Case report: Navigating treatment pathways for cardiac intimal sarcoma with PDGFRβ N666K mutation. Front Oncol 2024; 14:1362347. [PMID: 38646431 PMCID: PMC11026546 DOI: 10.3389/fonc.2024.1362347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/25/2024] [Indexed: 04/23/2024] Open
Abstract
In the realm of rare cardiac tumors, intimal sarcoma presents a formidable challenge, often requiring innovative treatment approaches. This case report presents a unique instance of primary intimal sarcoma in the left atrium, underscoring the critical role of genomic profiling in guiding treatment. Initial genomic testing unveiled a somatic, active mutation in PDGFRβ (PDGFRβ N666K), accompanied by MDM2 and CDK4 amplifications. This discovery directed the treatment course toward pazopanib, a PDGFRβ inhibitor, following irradiation. The patient's response was remarkable, with the therapeutic efficacy of pazopanib lasting for 16.3 months. However, the patient experienced a recurrence in the left atrium, where subsequent genomic analysis revealed the absence of the PDGFRβ N666K mutation and a significant reduction in PDGFRβ expression. This case report illustrates the complexities and evolving nature of cardiac intimal sarcoma treatment, emphasizing the potential of PDGFRβ signaling as a strategic target and highlighting the importance of adapting treatment pathways in response to genetic shifts.
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Affiliation(s)
- Akihiro Nishiyama
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Shigeki Sato
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroyuki Sakaguchi
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroshi Kotani
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kaname Yamashita
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Koushiro Ohtsubo
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kenji Iino
- Department of Cardiovascular Surgery, Kanazawa University, Kanazawa, Japan
| | - Hirofumi Takemura
- Department of Cardiovascular Surgery, Kanazawa University, Kanazawa, Japan
| | - Shinji Takeuchi
- Department of Medical Oncology, Kanazawa University Hospital, Kanazawa, Japan
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Shimaguchi C, Mizuguchi K, Fujita K, Shimoda T, Ikeda H. Cytological examination of peripheral blood cell block to diagnose small cell variant ALK-positive anaplastic large cell lymphoma. Cytopathology 2023; 34:626-629. [PMID: 37522608 DOI: 10.1111/cyt.13281] [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: 05/09/2023] [Revised: 06/11/2023] [Accepted: 07/14/2023] [Indexed: 08/01/2023]
Abstract
In small cell variant ALK-positive anaplastic large cell lymphoma (SC-ALCL), large hallmark cells are few and the preponderance are small- to medium-sized tumour cells. The cell block method is advantageous in SC-ALCL with small numbers of CD30-positive hallmark cells, in order to evaluate cell morphology and marker expression simultaneously. Accurate diagnosis of ALK-positive anaplastic large cell lymphoma (ALK+ ALCL) requires detection of CD30-positive hallmark cells. In small cell variant ALCL (SC-ALCL), large hallmark cells are few with the preponderance being small- to medium-sized tumour cells. The cell block method is advantageous in SC-ALCL with small numbers of CD30-positive hallmark cells in order to evaluate cell morphology and marker expression simultaneously.
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Affiliation(s)
- Chie Shimaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kazuki Fujita
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tsubasa Shimoda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
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Fujita K, Mizuguchi K, Mori T, Shimoda T, Sakano K, Shimaguchi C, Ito A, Yoshimura K, Sakaguchi M, Imi T, Ikeda H. SMARCB1/INI1-deficient intrathoracic neoplasm with rhabdoid/plasmacytoid cytomorphology in a patient with plasma cell myeloma: A case report. Diagn Cytopathol 2023; 51:E294-E300. [PMID: 37475580 DOI: 10.1002/dc.25197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/03/2023] [Accepted: 07/12/2023] [Indexed: 07/22/2023]
Abstract
SMARCB1 (INI1) is one of the switch/sucrose nonfermentable (SWI/SNF) complexes whose loss is associated with several tumors. SMARCB1 (INI1)-deficient intrathoracic neoplasms are extremely rare and known to be highly malignant and lethal. This report presents the case of a patient diagnosed with SMARCB1 (INI1)-deficient intrathoracic neoplasm during chemotherapy for plasma cell myeloma. A 77-year-old male patient complained of cough, bloody sputum, and fever with an enlarged right lung mass and pleural effusion. His cytological examination revealed undifferentiated epithelioid and rhabdoid/plasmacytoid cells with bi- or multinucleation, vacuolization, mitosis, and pleomorphism. However, it was difficult to distinguish the relapse of plasma cell myeloma as atypical plasmacytoid cells were detected. Immunohistochemically, the neoplastic cells showed a loss of SMARCB1 (INI1) expression in the cell block of pleural fluid and in the right lung of the autopsy specimen. Further, the patient was diagnosed with SMARCB1 (INI1)-deficient intrathoracic neoplasm of the right lung based on histological and autopsy findings. To the best of our knowledge, this is the first report of cytomorphology in a SMARCB1 (INI1)-deficient intrathoracic neoplasm.
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Affiliation(s)
- Kazuki Fujita
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Mori
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tsubasa Shimoda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kaori Sakano
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Chie Shimaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Ayumi Ito
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kaori Yoshimura
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Maki Sakaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Imi
- Department of Hematology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
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Kaneda M, Yagi-Nakanishi S, Ozaki F, Kondo S, Mizuguchi K, Kawano M, Malissen M, Malissen B, Yamada K, Yoshizaki T. Olfactory dysfunction in LATY136F knock-in mice. Auris Nasus Larynx 2021; 49:209-214. [PMID: 34348847 DOI: 10.1016/j.anl.2021.07.009] [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] [Received: 11/19/2020] [Revised: 06/26/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVE This study examined olfactory dysfunction in LATY136F knock-in mice and its pathogenic mechanism. METHODS The olfactory function of LATY136F knock-in mice was assessed by a behavioral test using cycloheximide solution, which has been used as a mice repellant because of its peculiar smell and unpleasant taste. The tests were administered to each group of LATY136F knock-in mice and WT mice at 8, 12, 16, 20, and 24 weeks of age. After the behavioral tests to evaluate olfactory function, the mice were sacrificed for evaluations by immunohistochemistry. RESULTS Behavioral tests to evaluate olfactory function showed that the LATY136F knock-in mice had a statistically significant level of olfactory dysfunction (P < 0.05). Histological analysis showed that the thickness of the olfactory epithelium in these mice was thinner than that in the age-matched wild type mice. There was no IgG4-RD like lesion in the olfactory epithelium of LATY136F knock-in mice. Olfactory marker protein and growth-associated protein 43 expressions in the olfactory epithelium of the LATY136F knock-in mice were markedly lesser than those in the wild type mice (P < 0.05). CONCLUSION The present study demonstrated that olfactory disturbances occurred in LATY136F knock-in mice. Furthermore, the mechanism was suggested to be reduced regeneration of the olfactory epithelium.
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Affiliation(s)
- Misako Kaneda
- Division of Otolaryngology, Head and Neck Surgery, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan.
| | - Sayaka Yagi-Nakanishi
- Division of Otolaryngology, Head and Neck Surgery, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
| | - Fumi Ozaki
- Division of Otolaryngology, Head and Neck Surgery, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
| | - Satoru Kondo
- Division of Otolaryngology, Head and Neck Surgery, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
| | - Keishi Mizuguchi
- Division of Rheumatology, Department of Internal medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
| | - Mitsuhiro Kawano
- Division of Rheumatology, Department of Internal medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
| | - Marie Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, Marseille 13288, France
| | - Bernard Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, Marseille 13288, France
| | - Kazunori Yamada
- Division of Hematology and Immunology, Kanazawa Medical University, 1-1, Uchinada-Machidaigaku, Kahoku, Ishikawa 920-0293, Japan
| | - Tomokazu Yoshizaki
- Division of Otolaryngology, Head and Neck Surgery, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-Machi, Kanazawa, Ishikawa 920-8641, Japan
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Waseda Y, Yamada K, Mizuguchi K, Ito K, Watanabe S, Zuka M, Ishizuka T, Malissen M, Malissen B, Kawano M, Matsui S. The pronounced lung lesions developing in LATY136F knock-in mice mimic human IgG4-related lung disease. PLoS One 2021; 16:e0247173. [PMID: 33661938 PMCID: PMC7932159 DOI: 10.1371/journal.pone.0247173] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 02/02/2021] [Indexed: 01/13/2023] Open
Abstract
RATIONALE Immunoglobulin (Ig) G4-related disease (IgG4-RD) is a novel clinical disease entity characterized by an elevated serum IgG4 concentration and tumefaction or tissue infiltration by IgG4-positive plasma cells. Pathological changes are most frequently seen in the pancreas, lacrimal glands, and salivary glands, but pathological changes in the lung also exist. Linker for activation of T cell (LAT)Y136F knock-in mice show Th2-dominant immunoreactions with elevated serum IgG1 levels, corresponding to human IgG4. We have reported that LATY136F knock-in mice display several characteristic features of IgG4-RD and concluded that they constitute an appropriate model of human IgG4-RD in salivary glands, pancreas, and kidney lesions. OBJECTIVES The aim of this study is to evaluate whether lung lesions in LATY136F knock-in mice can be a model of IgG4-related lung disease. METHODS Lung tissue samples from LATY136F knock-in mice (LAT) and wild-type mice (WT) were immunostained for IgG1 and obtained for pathological evaluation, and cell fractions and cytokine levels in broncho-alveolar lavage fluid (BALF) were analyzed. RESULTS In the LAT group, IgG1-positive inflammatory cells increased starting at 4 weeks of age and peaked at 10 weeks of age. The total cell count and percentage of lymphocytes increased significantly in BALF in the LAT group compared to the WT group. In BALF, Th2-dominant cytokines and transforming growth factor-β were also increased. In the LAT group, marked inflammation around broncho-vascular bundles peaked at 10 weeks of age. After 10 weeks, fibrosis around broncho-vascular bundles and bronchiectasis were observed in LATY136F knock-in mice but not WT mice. CONCLUSIONS LATY136F knock-in mice constitute an appropriate model of lung lesions in IgG4-RD.
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Affiliation(s)
- Yuko Waseda
- Third Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui, Japan
| | - Kazunori Yamada
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kiyoaki Ito
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Satoshi Watanabe
- Department oh Respiratory Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - Masahiko Zuka
- Department of Forensic Medicine and Pathology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tamotsu Ishizuka
- Third Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui, Japan
| | - Marie Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Universite´, INSERM, CNRS, Marseille, France
| | - Bernard Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Universite´, INSERM, CNRS, Marseille, France
| | - Mitsuhiro Kawano
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Shoko Matsui
- Health Administration Center, University of Toyama, Toyama, Japan
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Miyanaga T, Mizuguchi K, Hara S, Zoshima T, Inoue D, Nishioka R, Mizushima I, Ito K, Fuji H, Yamada K, Sato Y, Yanagita M, Kawano M. Tertiary lymphoid tissue in early-stage IgG4-related tubulointerstitial nephritis incidentally detected with a tumor lesion of the ureteropelvic junction: a case report. BMC Nephrol 2021; 22:34. [PMID: 33468063 PMCID: PMC7816437 DOI: 10.1186/s12882-021-02240-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 06/08/2020] [Accepted: 01/12/2021] [Indexed: 12/24/2022] Open
Abstract
Background IgG4-related kidney disease causes renal impairment of unknown pathogenesis that may progress to kidney failure. Although ectopic germinal centers contribute to the pathogenesis of the head and neck lesions of IgG4-related disease, the presence of tertiary lymphoid tissue (TLT) containing germinal centers in IgG4-RKD has rarely been reported. Case presentation We report a 72-year-old Japanese man who had IgG4-related tubulointerstitial nephritis (TIN) with TLT formation incidentally detected in a resected kidney with mass lesion of IgG4-related ureteritis in the ureteropelvic junction. During follow-up for past surgical resection of a bladder tumor, renal dysfunction developed and a ureter mass was found in the right ureteropelvic junction, which was treated by nephroureterectomy after chemotherapy. Pathology revealed no malignancy but abundant IgG4-positive cell infiltration, obliterative phlebitis and storiform fibrosis, confirming the diagnosis of IgG4-related ureteritis. In the resected right kidney, lymphoplasmacytes infiltrated the interstitium with focal distribution in the renal subcapsule and around medium vessels without storiform fibrosis, suggesting the very early stage of IgG4-TIN. Lymphocyte aggregates were also detected at these sites and consisted of B, T, and follicular dendritic cells, indicating TLT formation. IgG4-positive cells infiltrated around TLTs. Conclusions Our case suggests that TLT formation is related with the development of IgG4-TIN and our analysis of distribution of TLT have possibility to elucidate IgG4-TIN pathophysiology.
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Affiliation(s)
- Tatsuhito Miyanaga
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Satoshi Hara
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan.
| | - Takeshi Zoshima
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Dai Inoue
- Department of Radiology, Kanazawa University Graduate School of Medical Science, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Ryo Nishioka
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Ichiro Mizushima
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Kiyoaki Ito
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Hiroshi Fuji
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
| | - Kazunori Yamada
- Department of Hematology and Immunology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, Japan
| | - Yuki Sato
- Department of Nephrology, Kyoto University Graduate School of Medicine, Yoshidakonoe-cho, Sakyo-ku, Kyoto, Japan.,Medical Innovation Center TMK Project, Graduate School of Medicine, Kyoto University, 53 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, Japan
| | - Motoko Yanagita
- Medical Innovation Center TMK Project, Graduate School of Medicine, Kyoto University, 53 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, Japan.,Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, Japan
| | - Mitsuhiro Kawano
- Division of Rheumatology, Department of Internal Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, Japan
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Saito K, Mizuguchi K, Horiike T, Dinh Duong TA, Shinmyo Y, Kawasaki H. Characterization of the Inner and Outer Fiber Layers in the Developing Cerebral Cortex of Gyrencephalic Ferrets. Cereb Cortex 2018; 29:4303-4311. [DOI: 10.1093/cercor/bhy312] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 12/18/2022] Open
Abstract
Abstract
Changes in the cerebral cortex of mammals during evolution have been of great interest. Ferrets, monkeys, and humans have more developed cerebral cortices compared with mice. Although the features of progenitors in the developing cortices of these animals have been intensively investigated, those of the fiber layers are still largely elusive. By taking the advantage of our in utero electroporation technique for ferrets, here we systematically investigated the cellular origins and projection patterns of axonal fibers in the developing ferret cortex. We found that ferrets have 2 fiber layers in the developing cerebral cortex, as is the case in monkeys and humans. Axonal fibers in the inner fiber layer projected contralaterally and subcortically, whereas those in the outer fiber layer sent axons to neighboring cortical areas. Furthermore, we performed similar experiments using mice and found unexpected similarities between ferrets and mice. Our results shed light on the cellular origins, the projection patterns, the developmental processes, and the evolution of fiber layers in mammalian brains.
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Affiliation(s)
- Kengo Saito
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Keishi Mizuguchi
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Toshihide Horiike
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Tung Anh Dinh Duong
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Yohei Shinmyo
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Hiroshi Kawasaki
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
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Yamada K, Zuka M, Ito K, Mizuguchi K, Kakuchi Y, Onoe T, Suzuki Y, Yamagishi M, Izui S, Malissen M, Malissen B, Kawano M. LatY136F knock-in mouse model for human IgG4-related disease. PLoS One 2018; 13:e0198417. [PMID: 29902238 PMCID: PMC6002065 DOI: 10.1371/journal.pone.0198417] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/19/2018] [Indexed: 12/24/2022] Open
Abstract
Background The adaptor protein Linker for activation of T cell (LAT) is a key signaling hub used by the T cell antigen receptor. Mutant mice expressing loss-of-function mutations affecting LAT and including a mutation in which tyrosine 136 is replaced by a phenylalanine (LatY136F) develop lymphoproliferative disorder involving T helper type 2 effector cells capable of triggering a massive polyclonal B cell activation that leads to hypergammaglobulinemia G1 and E and to non-resolving inflammation and autoimmunity. The purpose of this study was to evaluate whether the phenotypes of LatY136F knock-in mice resemble the immunohistopathological features of immunoglobulin G4-related disease (IgG4-RD). Methods LatY136F knock-in mice were sacrificed at 4–20 weeks of age, and pancreas, kidney, salivary gland and lung were obtained. All organs were stained with hematoxylin-eosin and with Azan for estimation of collagen in fibrosis, and the severity scores of inflammation and fibrosis were evaluated. Immunostainings were performed to analyze the types of infiltrating cells. In addition, the effects of corticosteroid treatment on the development of tissue lesions and serum levels of IgG1 were assessed. Results Tissue lesions characterized by inflammatory mononuclear cell infiltration and fibrosis were detected in pancreas, kidney, and salivary gland starting from 6 weeks of age. Immunostainings showed pronounced infiltration of plasma cells, CD4-positive T cells, and macrophages. Infiltrating plasma cells predominantly expressed IgG1. The extent of inflammation in pancreas and salivary glands was markedly reduced by corticosteroid treatment. Conclusions LatY136F knock-in mice displayed increased production of Th2-type IgG1 (a homologue of human IgG4) and developed multiple organ tissue lesions reminiscent of those seen in patients with IgG4-RD. Moreover, the development of these tissue lesions was highly sensitive to corticosteroid treatment like in IgG4-RD. For these reasons we consider the LatY136F knock-in mouse strain to represent a promising model for human IgG4-RD.
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Affiliation(s)
- Kazunori Yamada
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- Department of Advanced Research in Community Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masahiko Zuka
- Department of Forensic Medicine and Pathology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kiyoaki Ito
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Keishi Mizuguchi
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Yasushi Kakuchi
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tamehito Onoe
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yasunori Suzuki
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masakazu Yamagishi
- Division of Cardiology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shozo Izui
- Department of Pathology and Immunology, University Medical Center, University of Geneva, Switzerland
| | - Marie Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Bernard Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Mitsuhiro Kawano
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- * E-mail:
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Ueda T, Mizuguchi K, Tsuji T, Tabayashi N, Abe T, Naito H, Takewa Y, Taniguchi S. Regulation of Perfusion Pressure during Cardiopulmonary bypass using Sevoflurane. Int J Artif Organs 2018. [DOI: 10.1177/039139880102400106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In hypothermic cardiopulmonary bypass (CPB), various vasodilators are used to control the perfusion pressure. These agents, however, often decrease the pressure excessively, and the low perfusion pressure may persist until the end of CPB. In this study we evaluate the safety and characteristics of the regulation of perfusion pressure during CPB using a volatile anesthetic, sevoflurane which has an extremely low partition coefficient. Twenty adult patients who underwent cardiac surgery were studied. Sevoflurane was applied by a vaporizer inserted into the oxygenator gas supply line. Pump flows were fixed at 2.4 L/min/m2 during the hypothermic period. Sevoflurane concentration was adjusted to keep mean arterial pressure (MAP) between 40 and 70 mmHg during CPB. Hemodynamic and metabolic parameters were measured and compared to the group we previously treated with chlorpromazine. In all cases, MAP could be maintained adequately. In the sevoflurane group, systemic vascular resistance indices (SVRI) during the rewarming period and at the end of CPB were higher, and doses of norepinephrine needed at the end of CPB were significantly lower than in the chlorpromazine group. The regulation of perfusion pressure during CPB using sevoflurane was safe and could easily maintain adequate SVRI.
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Affiliation(s)
- T. Ueda
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - K. Mizuguchi
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - T. Tsuji
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - N. Tabayashi
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - T. Abe
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - H. Naito
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - Y. Takewa
- Department of Surgery III, Nara Medical University, Nara - Japan
| | - S. Taniguchi
- Department of Surgery III, Nara Medical University, Nara - Japan
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Abstract
Gastric metastasis from ovarian cancer is exceptionally rare and generally occurs in advanced stages. A 71-year-old woman presented with a solitary gastric submucosal mass 8 years after the diagnosis of a stage IA ovarian serous adenocarcinoma. Endoscopy showed a tumor covered with normal gastric mucosa. Initially, a gastrointestinal stromal tumor was suspected, but biopsy revealed a histology of invasive micropapillary carcinoma, similar to the histological findings of the previously resected ovarian tumor. Clinicians should consider that in patients with a submucosal tumor and a history of ovarian cancer, gastric lesions may be secondary metastases from ovarian cancer.
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Affiliation(s)
- Keishi Mizuguchi
- Department of Clinical Laboratory, Japan Community Healthcare Organization Kanazawa Hospital, Japan
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, Japan
| | - Hiroshi Minato
- Department of Pathology and Laboratory Medicine, Kanazawa Medical University, Japan
| | - Isao Yoshida
- Department of Internal Medicine, Japan Community Healthcare Organization Kanazawa Hospital, Japan
| | - Junpei Iwadare
- Department of Obstetrics and Gynecology, Kanazawa University, Japan
| | - Kayo Kayahashi
- Department of Obstetrics and Gynecology, Kanazawa University, Japan
| | - Yuki Mitani
- Department of Clinical Laboratory, Japan Community Healthcare Organization Kanazawa Hospital, Japan
| | - Kazuyoshi Watanabe
- Department of Internal Medicine, Japan Community Healthcare Organization Kanazawa Hospital, Japan
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11
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Mizuguchi K, Minato H, Onishi H, Mitani Y, Kawai J. Cytopathological findings of primary pulmonary Ewing family of tumors with EWSR1 translocation: A case report. Thorac Cancer 2016; 7:602-606. [PMID: 27766786 PMCID: PMC5125323 DOI: 10.1111/1759-7714.12347] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 02/11/2016] [Indexed: 10/27/2022] Open
Abstract
Primary pulmonary neoplasms of the Ewing family of tumors (EFT) are extremely rare and usually occur in adolescents or young adults. Only about 40 cases of pulmonary EFT have been reported in English literature, and no cytological studies have been documented. In this report, we describe the cytopathological findings of a primary pulmonary EFT in an elderly patient. A 70-year-old man sought care because of a progressing cough and dyspnea. Chest computed tomography revealed a circumscribed mass of 6 cm in the left upper lobe. Fine needle aspiration cytology and core needle biopsy revealed uniform round cell proliferation. The predominant population consisted of cells with thickened nuclear membranes, finely dispersed chromatin, single distinct nucleoli, and indistinct cytoplasm. The other population consisted of smaller cells with darker chromatin. The cytoplasm stained positive for periodic acid-Schiff stain and was digested by diastase. Immunohistochemistry showed positivity for MIC2 (CD99), and focal positivity for neuron specific enolase, synaptophysin, and chromogranin A. Fluorescence in situ hybridization (FISH) revealed EWSR1 translocation. Although rare, pulmonary EFT cannot be disregarded, regardless of age. When two populations of uniform, round cells are observed, immunohistochemistry with MIC2 (CD99) and cytogenetic analysis by reverse transcription polymerase chain reaction or FISH should be considered. Cytological diagnosis may play an important role in the early diagnosis and treatment of pulmonary EFT.
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Affiliation(s)
- Keishi Mizuguchi
- Department of Pathology, Kansai Electric Power Hospital, Osaka, Japan
| | - Hiroshi Minato
- Department of Pathology and Laboratory Medicine, Kanazawa Medical University, Ishikawa, Japan
| | - Hitomi Onishi
- Department of Pathology, Kansai Electric Power Hospital, Osaka, Japan
| | - Yuki Mitani
- Department of Clinical Laboratory, Japan Community Healthcare Organization Kanazawa Hospital, Ishikawa, Japan
| | - Jun Kawai
- Department of Pathology, Kansai Electric Power Hospital, Osaka, Japan
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12
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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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13
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Shimizu Y, Takeuchi T, Mita S, Notsu T, Mizuguchi K, Kyo S. Krüppel-like factor 4 mediates anti-proliferative effects of progesterone with G₀/G₁ arrest in human endometrial epithelial cells. J Endocrinol Invest 2010; 33:745-50. [PMID: 20479568 DOI: 10.1007/bf03346681] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Activation of the progesterone receptor (PR) inhibits cell proliferation in various reproductive tissues. However, the molecular mechanisms underlying the regulation of cell proliferation by PR remain poorly understood. It is well established that Krüppel-like factor 4 (KLF4), a family of zinc fingercontaining transcription factors, induces cell cycle arrest in epithelial cells. In this study, we investigated whether KLF4 served as a target of PR activation during cell proliferation using human endometrial epithelial cells. PR agonists, progesterone and dienogest, were found to produce a lasting increase in the expression of KLF4 mRNA, followed by a decrease in cyclin D1 mRNA, and inhibit cell proliferation with G₀/G₁ arrest. KLF4 knockdown using KLF4 small interferingRNA abrogated the inhibition of cell proliferation by PR agonists. In addition, forced expression of KLF4 inhibited cyclin D1 promoter transactivation. These results suggest that PR agonists induce KLF4 expression and then inhibit cyclin D1 expression, and consequently inhibit cell proliferation in human endometrial epithelial cells. In terms of human reproductive tissue, KLF4 may be a factor concerning cell cycle, directly responsive to PR activation.
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Affiliation(s)
- Y Shimizu
- Pharmaceutical Research Center, Mochida Pharmaceutical Co., Ltd., 722 Jimba-aza-Uenohara, Gotemba, Shizuoka 412-8524, Japan.
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14
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Mizuguchi K, Hoshino H, Nagasawa T, Kubota M. Extracorporeal membrane oxygenation in a patient with propionic acidaemia: a therapeutic option for cardiac failure. J Inherit Metab Dis 2009; 32 Suppl 1:S37-40. [PMID: 19408133 DOI: 10.1007/s10545-009-1029-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Revised: 03/23/2009] [Accepted: 03/24/2009] [Indexed: 11/30/2022]
Abstract
We report a Japanese girl affected with a neonatal-onset form of propionic acidaemia (PA). She developed severe metabolic crisis after dehydration at 2 years of age. Bradycardia with complete atrioventricular block responded to haemodiafiltration, but severe cardiac failure was refractory to inotropic treatment. She was diagnosed with acute cardiac dysfunction caused by PA-induced metabolic crisis. Extracorporeal membrane oxygenation (ECMO), a technique for providing mechanical circulatory support, was required. This is the first case report of a PA patient who recovered from a life-threatening metabolic crisis with cardiac failure by ECMO. Cardiac failure may be a cause of death, but it is occasionally an under-recognized complication. Mitochondrial dysfunction in the myocardium due to propionyl-CoA could contribute to the pathomechanism of cardiac complications of PA. We believe that ECMO should be attempted in PA patients with cardiac failure, in addition to haemodiafiltration and other therapeutic measures, because doing so may lead to the recovery of cardiac dysfunction, as was evident in our patient. In conclusion, prompt investigations and management of cardiac complications should be performed immediately during PA-induced metabolic crises.
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Affiliation(s)
- K Mizuguchi
- Division of Child Neurology, National Center of Child Health and Development, Okura 2-10-1, Setagaya-ku, Tokyo, 157-8504, Japan.
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15
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Ohta M, Kawano H, Notsu T, Naba H, Mizuguchi K. Abstract: P494 EICOSAPENTAENOIC ACID ATTENUATES STATIN-INDUCED ER STRESS AND TOXICITY IN CULTURED MYOBLAST CELLS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70789-5] [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: 11/27/2022]
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16
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Sasagawa S, Shimizu Y, Nagaoka T, Tokado H, Imada K, Mizuguchi K. Dienogest, a selective progestin, reduces plasma estradiol level through induction of apoptosis of granulosa cells in the ovarian dominant follicle without follicle-stimulating hormone suppression in monkeys. J Endocrinol Invest 2008; 31:636-41. [PMID: 18787383 DOI: 10.1007/bf03345616] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Dienogest is a selective progestin that has been shown to arrest ovarian follicular development in women, without affecting gonadotropin secretion. As luteal progesterone or exogeneous progestins are known to suppress ovarian folliculogenesis via the inhibition of gonadotropin secretion, this action of dienogest on ovaries seems to be unique. To examine the underlying mechanism of the antifolliculogenic effect of dienogest, female cynomolgus monkeys were treated with a single oral dose of 0.1 mg/kg dienogest on day 7 of the menstrual cycle. Plasma FSH, estradiol (E2), and progesterone levels were measured up to 15 days after dosing. In an additional experiment, ovaries were excised 24 h after dosing for histological examinations. As a result, plasma E2 level declined within 24 h after dosing, while dienogest did not decreased FSH level prior to E2 decline. After decline of E2 level, the low level of E2 was sustained for more than 11 days. It is considered that a single oral dose of dienogest induced atresia of the dominant follicle. In the histological examination, two out of three animals showed decline in E2 level. The ovarian dominant follicles from these animals showed apoptotic changes in granulosa cells with scattered aromatase expression within 24 h after dosing. These results indicate that the induction of atresia of the ovarian dominant follicle by direct action would be a possible mechanism of dienogest to inhibit plasma E2 level.
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Affiliation(s)
- S Sasagawa
- Pharmaceutical Research Center, Mochida Pharmaceutical Co., Ltd., Shizuoka 412-8524, Japan
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17
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Abstract
BACKGROUND Thermophilic organisms are able to live at high temperatures ranging from 50 to > 100 degrees C. Their proteins must be sufficiently stable to function under these extreme conditions; however, the basis for thermostability remains elusive. Subtle differences between thermophilic and mesophilic molecules can be found when sequences or structures from homologous proteins are compared, but often these differences are family-specific and few general rules have been derived. The availability of complete genome sequences has now made it feasible to perform a large-scale comparison between mesophilic and thermophilic proteins, the latter of which primarily come from archaeal genomes although a few complete genomes of thermophilic eubacteria are also available. RESULTS We compared mesophilic proteins with their thermophilic counterparts of archaeal or eubacterial origins independently. This was based on the assumption that in these two kingdoms, different mechanisms may have been exploited for the adaptation of proteins at high temperatures. We derived the environment specific amino acid compositions of thermophilic proteins from 10 archaeal and seven eubacterial genomes, by aligning a large number of sequences from thermophilic proteins with their close mesophilic homologues of known three-dimensional (3D) structure. We further analysed environment specific substitutions, which lead from mesophilic proteins to either archaeal or eubacterial thermophilic proteins. CONCLUSION Our comparisons were based on homology-based structural predictions for a large number of thermophilic proteins. We demonstrated that thermal adaptation in the archaeal and eubacterial kingdoms is achieved in different ways. The main differences concern the usage of Gln, Ile and positively charged amino acids. In particular archaeal organisms appeared to have acquired thermostability by substituting non-charged polar amino acids (such as Gln) with Glu and Lys, and non-polar amino acids with Ile on the surface of proteins.
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Affiliation(s)
- K Mizuguchi
- Department of Biochemistry, University of Cambridge, UK
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, UK
- Current address: National Institute of Biomedical Innovation, Japan
| | - M Sele
- Dipartimento di biologia strutturale e funzionale, Universita' di Napoli"Federico II", Italy
| | - MV Cubellis
- Dipartimento di biologia strutturale e funzionale, Universita' di Napoli"Federico II", Italy
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18
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Camargo LM, Collura V, Rain JC, Mizuguchi K, Hermjakob H, Kerrien S, Bonnert TP, Whiting PJ, Brandon NJ. Disrupted in Schizophrenia 1 Interactome: evidence for the close connectivity of risk genes and a potential synaptic basis for schizophrenia. Mol Psychiatry 2007; 12:74-86. [PMID: 17043677 DOI: 10.1038/sj.mp.4001880] [Citation(s) in RCA: 334] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Disrupted in Schizophrenia 1 (DISC1) is a schizophrenia risk gene associated with cognitive deficits in both schizophrenics and the normal ageing population. In this study, we have generated a network of protein-protein interactions (PPIs) around DISC1. This has been achieved by utilising iterative yeast-two hybrid (Y2H) screens, combined with detailed pathway and functional analysis. This so-called 'DISC1 interactome' contains many novel PPIs and provides a molecular framework to explore the function of DISC1. The network implicates DISC1 in processes of cytoskeletal stability and organisation, intracellular transport and cell-cycle/division. In particular, DISC1 looks to have a PPI profile consistent with that of an essential synaptic protein, which fits well with the underlying molecular pathology observed at the synaptic level and the cognitive deficits seen behaviourally in schizophrenics. Utilising a similar approach with dysbindin (DTNBP1), a second schizophrenia risk gene, we show that dysbindin and DISC1 share common PPIs suggesting they may affect common biological processes and that the function of schizophrenia risk genes may converge.
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Affiliation(s)
- L M Camargo
- Merck Research Labs, Merck & Co., Boston, MA 02115, USA.
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19
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Hirayama T, Ikeda K, Ishimaru S, Yajima T, Ochi M, Tanaka S, Sakaguchi H, Mizuguchi K, Taniguchi S. [Autologous fibrin sealant preparing system in coronary artery bypass grafting]. Kyobu Geka 2005; 58:128-32. [PMID: 15724475] [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] [Indexed: 05/01/2023]
Abstract
Autologous fibrin sealant (AFS) which is not based on the conventional method of co-administering fibrinogen, thrombin and aprotinin was prepared by Vivostat system, and was used in coronary artery bypass grafting (CABG). The purpose of this study was to investigate the safety and efficacy of the AFS prepared by the Vivostat system. In 6 of 68 cases of CABG, normal AFS was not prepared due to device failures. AFS was prepared and sprayed in 62 cases. There were the total of 230 anastomosis sprayed AFS and the bleeding could not seen in 225 anastomosis. Surgical hemostatic procedures (4 cases) were or other sealant usage (1 case) was performed 5 bleeding anastomosis sites. The rate of hemostasis at the anastomosis using AFS was 97.8%. This study was conducted in patients undergoing CABG. In this group of patients, a number of commercial available fibrin sealant products are routinely used. The usefulness of Vivostat as medical device to prepare and administer AFS was confirmed in this study.
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Affiliation(s)
- Tetsuzo Hirayama
- Department of Surgery II, Tokyo Medical University, Tokyo, Japan
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20
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21
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Williams MG, Shirai H, Shi J, Nagendra HG, Mueller J, Mizuguchi K, Miguel RN, Lovell SC, Innis CA, Deane CM, Chen L, Campillo N, Burke DF, Blundell TL, de Bakker PI. Sequence-structure homology recognition by iterative alignment refinement and comparative modeling. Proteins 2002; Suppl 5:92-7. [PMID: 11835486 DOI: 10.1002/prot.1169] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [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: 11/10/2022]
Abstract
Our approach to fold recognition for the fourth critical assessment of techniques for protein structure prediction (CASP4) experiment involved the use of the FUGUE sequence-structure homology recognition program (http://www-cryst.bioc.cam.ac.uk/fugue), followed by model building. We treat models as hypotheses and examine these to determine whether they explain the available data. Our method depends heavily on environment-specific substitution tables derived from our database of structural alignments of homologous proteins (HOMSTRAD, http://www-cryst.bioc.cam.ac.uk/homstrad/). FUGUE uses these tables to incorporate structural information into profiles created from HOMSTRAD alignments that are matched against a profile created for the target from multiple sequence alignment. In addition, environment-specific substitution tables are used throughout the modeling procedure and as part of the model evaluation. Annotation of sequence alignments with JOY, to reflect local structural features, proved valuable, both for modifying hypotheses, and for rejecting predictions when the expected pattern of conservation is not observed. Our stringency in rejecting incorrect predictions led us to submit a relatively small number of models, including only a low number of false positives, resulting in a high average score.
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Affiliation(s)
- M G Williams
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
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22
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Naito H, Kawata T, Mizuguchi K, Abe T, Ueda T, Nezu K, Taniguchi S. [Off-pump coronary artery bypass grafting for patients with cardiogenic shock due to acute myocardial infarction]. Kyobu Geka 2002; 55:750-3. [PMID: 12174617] [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] [Indexed: 02/26/2023]
Abstract
UNLABELLED Off-pump coronary artery bypass (OPCAB) is less invasive, so we have recently been expanding the indication. We performed OPCAB for 3 patients with cardiogenic shock due to acute myocardial infarction (AMI). PATIENTS All patients were supported hemodynamically by intra-aortic balloon pumping (IABP) prior to surgery. RESULTS We performed the revascularization of territories for the left anterior descending artery (LAD) and right coronary artery (RCA) in these high risk patients using OPCAB technique to improve the hemodynamic state. In all patients, IABP was removed within 48 hours after surgery and the postoperative course was uneventful. CONCLUSIONS It seems that OPCAB is a useful and effective procedure for a selected patient even with cardiogenic shock due to AMI.
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Affiliation(s)
- H Naito
- Department of Surgery III, Nara Medical University, Kashihara, Japan
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23
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Kato Y, Tsuda T, Hosaka Y, Takahashi T, Shirakawa K, Furusako S, Mizuguchi K, Mochizuki H. Effect of trapidil on effector functions of monocytes related to atherosclerotic plaque. Eur J Pharmacol 2001; 428:371-9. [PMID: 11689197 DOI: 10.1016/s0014-2999(01)01336-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 01/08/2023]
Abstract
The infiltration and activation of inflammatory cells play an important role in the formation and stability of coronary atherosclerotic plaque in patients with acute coronary syndrome. In this study, we evaluated the effect of trapidil, an anti-platelet agent, on atheroma-related functions of human T cells and monocytes. Trapidil and anti-CD154 (CD40 ligand) antibody inhibited the increase of procoagulant activity in the mixed lymphocyte reaction; trapidil also suppressed the induction of tissue factor, monocyte chemoattractant protein-1 (MCP-1) and matrix metalloproteinase-9 in the mixed lymphocyte reaction. Trapidil did not alter CD154 expression on isolated T cells, but it diminished CD40 expression on isolated monocytes and human monocytic leukemia THP-1 cells stimulated with interferon-gamma. Moreover, trapidil reduced MCP-1 production of isolated monocytes and THP-1 cells stimulated with interferon-gamma plus CD154-transfected cells. This effect was not seen with other tested anti-platelet agents and coronary vasodilators. In conclusion, trapidil directly acts on monocytes/macrophages to lower their susceptibility to CD154 on T cells.
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Affiliation(s)
- Y Kato
- Research Center, Mochida Pharmaceutical Co., Ltd., 722 Jimba-aza-Uenohara, Gotemba, 412-8524, Shizuoka, Japan.
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24
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Abstract
The Drosophila gene Spätzle encodes the activating ligand for the Toll receptor. This signaling pathway is required for dorso-ventral patterning in the early embryo and an antifungal immune response in larvae and adults. The genome sequence of Drosophila shows that there are a total of eight Toll-like receptors and these may function in other aspects of embryonic development and innate immunity. Here we describe five Drosophila homologues of Spätzle (Spz2-6) found using an iterative searching method. All five appear to encode proteins containing neurotrophin-like cystine-knot domains. In addition, most retain a characteristic intron-exon structure shared with the prototype Spätzle gene. This provides evidence that the family arose by ancient gene duplication events and indicates that the gene products may represent activating ligands for corresponding Toll receptors. Expression studies show that only Spz4 is expressed strongly in larvae and adults and thus may be involved in an ancillary antifungal response mediated by Toll-5. By contrast, Spz6 shows a complex spatial and temporally regulated expression pattern in the late embryo. Thus the new Toll/Spätzle families of signaling molecules may have important roles in other aspects of development and immunity.
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Affiliation(s)
- J S Parker
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
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25
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Ueda T, Kawata T, Mizuguchi K, Tsuji T, Tabayashi N, Abe T, Naito H, Nezu K, Taniguchi S. Reoperative coronary artery bypass grafting using a minimally invasive direct coronary artery bypass procedure. Jpn J Thorac Caridovasc Surg 2001; 49:602-6. [PMID: 11692585 DOI: 10.1007/bf02916223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Reoperative coronary artery bypass grafting with cardiopulmonary bypass tends to cause a higher mortality and morbidity than the primary operation. The purpose of this study was to discuss the effectiveness and safety of a minimally invasive coronary artery bypass procedure for patients who had previously undergone coronary artery bypass surgery. METHODS We performed redo single coronary artery bypass grafting to the left anterior descending coronary artery in 9 patients and to the right coronary artery in 3 patients using minimally invasive cardiac surgery. The graft to the left anterior descending coronary artery was taken from the left internal thoracic artery in 5 patients, the right gastroepiploic artery in 3 patients, and from the saphenous vein in the other 1 patient. The graft to the right coronary artery was from the right gastroepiploic artery in all 3 patients. RESULTS All grafts were patent. There was no major postoperative complication and no surgical or hospital death except one late death. CONCLUSIONS In selected patients, we could safely and completely perform coronary artery bypass re-grafting to the left descending coronary artery or right coronary artery using a minimally invasive operation.
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Affiliation(s)
- T Ueda
- Department of Surgery III, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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26
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Shirai H, Mizuguchi K. [Genome analysis on the basis of protein structures]. Tanpakushitsu Kakusan Koso 2001; 46:1496-503. [PMID: 11579543] [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] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- H Shirai
- Department of Biochemistry, University of Cambridge
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27
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Abstract
Three enzymes, peptidyl-arginine deiminase from Porphyromonas gingivalis, arginine deiminase and amidinotransferase are traditionally classified separately. By combining PSI-BLAST and FUGUE, data presented in this article describe how these enzymes belong to a novel superfamily, adopting a common fold and sharing similar catalytic mechanisms.
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Affiliation(s)
- H Shirai
- Dept of Biochemistry, University of Cambridge, Old Addenbrookes Site, 80 Tennis Court Road, CB2 1GA, Cambridge, UK
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28
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de Bakker PI, Bateman A, Burke DF, Miguel RN, Mizuguchi K, Shi J, Shirai H, Blundell TL. HOMSTRAD: adding sequence information to structure-based alignments of homologous protein families. Bioinformatics 2001; 17:748-9. [PMID: 11524380 DOI: 10.1093/bioinformatics/17.8.748] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
summary: We describe an extension to the Homologous Structure Alignment Database (HOMSTRAD; Mizuguchi et al., Protein Sci., 7, 2469-2471, 1998a) to include homologous sequences derived from the protein families database Pfam (Bateman et al., Nucleic Acids Res., 28, 263-266, 2000). HOMSTRAD is integrated with the server FUGUE (Shi et al., submitted, 2001) for recognition and alignment of homologues, benefitting from the combination of abundant sequence information and accurate structure-based alignments. AVAILABILITY The HOMSTRAD database is available at: http://www-cryst.bioc.cam.ac.uk/homstrad/. Query sequences can be submitted to the homology recognition/alignment server FUGUE at: http://www-cryst.bioc.cam.ac.uk/fugue/.
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Affiliation(s)
- P I de Bakker
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK
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29
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Kasamatsu T, Hasegawa T, Tsuda H, Okada S, Sawada M, Yamada T, Tsunematsu R, Ohmi K, Mizuguchi K, Kawana T. Primary epithelioid sarcoma of the vulva. Int J Gynecol Cancer 2001; 11:316-20. [PMID: 11520372 DOI: 10.1046/j.1525-1438.2001.011004316.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A case of a 31-year-old woman with epithelioid sarcoma of the vulva which metastasized to the regional lymph node 8 years after onset of the disease is reported here. The patient first noticed a painless subcutaneous mass of 5 mm in diameter in the right labium majus at age of 21. This was excised locally at age 23, but recurred 17 months later. Although local excision was again performed, the tumor recurred and continued to enlarge very slowly. At this stage, based on the pathology of both the initial and second tumors, the diagnosis was of a benign inflammatory process. However, local recurrence and inguinal lymph node swelling occurred at age 29, and biopsy was taken. The pathology report indicated benign granulomatous changes. The slides were reconsidered and re-interpreted as epithelioid sarcoma, whereupon radical vulvectomy was performed at age 31. Vulvar epithelioid sarcoma with inguinal lymph node metastasis was first diagnosed at that time. Epithelioid sarcoma of the vulva is an exceedingly rare tumor, and only 15 cases have been reported thus far in the literature. Early diagnosis and curative treatment of this tumor may be problematic for gynecologists because of its rarity and therefore little-known characteristic clinical behavior and histology. Radical vulvectomy or extensive local excision with inguinal lymphadenectomy at the time of diagnosis is recommended as the treatment of choice.
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Affiliation(s)
- T Kasamatsu
- Division of Gynecology, National Cancer Center Hospital, Tokyo, Japan
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Shi J, Blundell TL, Mizuguchi K. FUGUE: sequence-structure homology recognition using environment-specific substitution tables and structure-dependent gap penalties. J Mol Biol 2001; 310:243-57. [PMID: 11419950 DOI: 10.1006/jmbi.2001.4762] [Citation(s) in RCA: 920] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
FUGUE, a program for recognizing distant homologues by sequence-structure comparison (http://www-cryst.bioc.cam.ac.uk/fugue/), has three key features. (1) Improved environment-specific substitution tables. Substitutions of an amino acid in a protein structure are constrained by its local structural environment, which can be defined in terms of secondary structure, solvent accessibility, and hydrogen bonding status. The environment-specific substitution tables have been derived from structural alignments in the HOMSTRAD database (http://www-cryst.bioc. cam.ac.uk/homstrad/). (2) Automatic selection of alignment algorithm with detailed structure-dependent gap penalties. FUGUE uses the global-local algorithm to align a sequence-structure pair when they greatly differ in length and uses the global algorithm in other cases. The gap penalty at each position of the structure is determined according to its solvent accessibility, its position relative to the secondary structure elements (SSEs) and the conservation of the SSEs. (3) Combined information from both multiple sequences and multiple structures. FUGUE is designed to align multiple sequences against multiple structures to enrich the conservation/variation information. We demonstrate that the combination of these three key features implemented in FUGUE improves both homology recognition performance and alignment accuracy.
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Affiliation(s)
- J Shi
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Old Addenbrookes Site, Cambridge, CB2 1GA, UK
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Kasamatsu T, Hasegawa T, Tsuda H, Okada S, Sawada M, Yamada T, Tsunematsu R, Ohmi K, Mizuguchi K, Kawana T. Primary epithelioid sarcoma of the vulva. Int J Gynecol Cancer 2001. [DOI: 10.1136/ijgc-00009577-200107000-00011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Abstract.Kasamatsu T, Hasegawa T, Tsuda H, Okada S, Sawada M, Yamada T, Tsunematsu R, Ohmi K, Mizuguchi K, Kawana T. Primary epithelioid sarcoma of the vulva.A case of a 31-year-old woman with epithelioid sarcoma of the vulva which metastasized to the regional lymph node 8 years after onset of the disease is reported here. The patient first noticed a painless subcutaneous mass of 5 mm in diameter in the right labium majus at age of 21. This was excised locally at age 23, but recurred 17 months later. Although local excision was again performed, the tumor recurred and continued to enlarge very slowly. At this stage, based on the pathology of both the initial and second tumors, the diagnosis was of a benign inflammatory process. However, local recurrence and inguinal lymph node swelling occurred at age 29, and biopsy was taken. The pathology report indicated benign granulomatous changes. The slides were reconsidered and re-interpreted as epithelioid sarcoma, whereupon radical vulvectomy was performed at age 31. Vulvar epithelioid sarcoma with inguinal lymph node metastasis was first diagnosed at that time. Epithelioid sarcoma of the vulva is an exceedingly rare tumor, and only 15 cases have been reported thus far in the literature. Early diagnosis and curative treatment of this tumor may be problematic for gynecologists because of its rarity and therefore little-known characteristic clinical behavior and histology. Radical vulvectomy or extensive local excision with inguinal lymphadenectomy at the time of diagnosis is recommended as the treatment of choice.
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Kameda Y, Kitamura S, Taniguchi S, Kawata T, Mizuguchi K, Nishioka H, Sakaguchi H. Differences in adaptation to growth of children between internal thoracic artery and saphenous vein coronary bypass grafts. J Cardiovasc Surg (Torino) 2001. [PMID: 11292899 DOI: 10.1016/s0967-2109(97)88912-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND It is not known how the internal thoracic artery (ITA) and saphenous vein graft (SVG) adapts to somatic growth of pediatric patients who underwent coronary artery bypass grafting (CABG). METHODS Twenty-two ITAs and 6 SVGs in 17 patients who underwent at least three postoperative catheterizations with biplanar cineangiography and followed for a minimum of 5 years were evaluated. We evaluated the length, diameter and curvature of the grafts by cineangiographies which were performed at 1 month, 1 year, 5 years and more than 5 years postoperatively. RESULTS The length of the ITA (1-month: 117+/-31 mm, 1-year: 134+/-32 mm, 5-years: 146+/-28 mm, and >5-years: 155+/-34 mm, p=0.032) and diameter of the ITA (1.4+/-0.4 mm, 2.0+/-0.7 mm, 2.3+/-0.6 mm and 2.6+/-0.6 mm, p<0.0001) significantly increased over time, but neither the length nor diameter of the SVG length: 121+/-33 mm, 119+/-29 mm, 119+/-25 mm and 126+/-1 mm, p=0.9907; diameter: 4.1+/-1.0 mm, 3.9+/-0.7 mm, 4.0+/-0.8 mm and 3.3+/-0.4 mm, p=0.5784) increased. Although the ITA exhibited no change in curvature over time (1 month: 1.15+/-0.07, late: 1.15+/-0.07, p=0.8490), the curvature of the SVG significantly decreased over time (1 month: 1.42+/-0.19 and late: 1.25+/-0.16, p=0.0277). The percent segmental length of ITAs were changed little from early to late after CABG (1 month: proximal: 33.7+/-7.0%, middle: 33.3+/-7.9% and distal: 32.9+/-7.9%, vs late: 34.3+/-7.2%, 33.2+/-7.9% and 32.5+/-7.9%, p=0.937). CONCLUSIONS ITAs grow in proportion to somatic growth, while SVGs course in a more linear fashion in adapting to patient growth.
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Affiliation(s)
- Y Kameda
- Department of Surgery III, Nara Medical University, Kashihara, Nara, Japan.
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Nishizaki K, Kameda Y, Kawata T, Mizuguchi K, Imai T, Taniguchi S. Functional and perfusional assessment with electrocardiograph-gated single photon emission computed tomography after minimally invasive direct coronary artery bypass grafting. Ann Thorac Cardiovasc Surg 2001; 7:99-102. [PMID: 11371279] [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: 04/16/2023] Open
Abstract
BACKGROUND Because of limited surgical field, minimally invasive coronary artery bypass grafting (MIDCAB) requires anastomosis to the distal portion of the left anterior descending artery (LAD) of the left internal thoracic artery (LITA) with the heart beating. Though the diameters of these arteries are very small, it is unknown whether blood flow sufficient for the LAD territory is obtained by bypass grafting. METHOD Eight patients with single-vessel disease of the LAD underwent MIDCAB with the LITA to the LAD and we evaluate the perfusion and function in the LAD territory by quantitative ECG-gated SPECT (QGS) with 99m-technetium sestamibi (MIBI) before and after operation. RESULT The intraoperatively measured diameters of the LITA and LAD at the site of anastomosis were 1.1+/-0.2 mm and 1.3+/-0.4 mm, respectively. The percentage increases in end-diastolic perfusion, regional ejection fraction and regional wall thickening in the anteroseptal area after MIDCAB were 136.3+/-11.7(p=0.071), 148.4+/-6.6(p=0.007) and 133.0+/-5.6(p=0.029), respectively (paired t-test, mean +/- SD %). Stress-rest MIBI SPECT indicated no ischemia in anteroseptal wall. CONCLUSION The MIDCAB technique thus appeared to improve perfusion and function in the LAD territory despite bypass to the distal LAD, and ECG-gated MIBI SPECT using QGS software was very useful for evaluating the quality of anastomosis after MIDCAB.
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Affiliation(s)
- K Nishizaki
- Department of Surgery III, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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Abstract
An extremely rare case of solitary fibrous tumor of the prostate is presented. The patient underwent a radical retropubic prostatectomy and has remained well with no evidence of recurrence during the last 18 months. This is the fifth reported case of such a lesion arising in the prostate.
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Affiliation(s)
- H Sekine
- Departments of Urology and Clinical Pathology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan
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35
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Affiliation(s)
- T L Blundell
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, 2 1GA, Cambridge CB, UK.
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Kameda Y, Kitamura S, Taniguchi S, Kawata T, Mizuguchi K, Nishioka H, Sakaguchi H. Differences in adaptation to growth of children between internal thoracic artery and saphenous vein coronary bypass grafts. J Cardiovasc Surg (Torino) 2001; 42:9-16. [PMID: 11292899] [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] [Indexed: 02/19/2023]
Abstract
BACKGROUND It is not known how the internal thoracic artery (ITA) and saphenous vein graft (SVG) adapts to somatic growth of pediatric patients who underwent coronary artery bypass grafting (CABG). METHODS Twenty-two ITAs and 6 SVGs in 17 patients who underwent at least three postoperative catheterizations with biplanar cineangiography and followed for a minimum of 5 years were evaluated. We evaluated the length, diameter and curvature of the grafts by cineangiographies which were performed at 1 month, 1 year, 5 years and more than 5 years postoperatively. RESULTS The length of the ITA (1-month: 117+/-31 mm, 1-year: 134+/-32 mm, 5-years: 146+/-28 mm, and >5-years: 155+/-34 mm, p=0.032) and diameter of the ITA (1.4+/-0.4 mm, 2.0+/-0.7 mm, 2.3+/-0.6 mm and 2.6+/-0.6 mm, p<0.0001) significantly increased over time, but neither the length nor diameter of the SVG length: 121+/-33 mm, 119+/-29 mm, 119+/-25 mm and 126+/-1 mm, p=0.9907; diameter: 4.1+/-1.0 mm, 3.9+/-0.7 mm, 4.0+/-0.8 mm and 3.3+/-0.4 mm, p=0.5784) increased. Although the ITA exhibited no change in curvature over time (1 month: 1.15+/-0.07, late: 1.15+/-0.07, p=0.8490), the curvature of the SVG significantly decreased over time (1 month: 1.42+/-0.19 and late: 1.25+/-0.16, p=0.0277). The percent segmental length of ITAs were changed little from early to late after CABG (1 month: proximal: 33.7+/-7.0%, middle: 33.3+/-7.9% and distal: 32.9+/-7.9%, vs late: 34.3+/-7.2%, 33.2+/-7.9% and 32.5+/-7.9%, p=0.937). CONCLUSIONS ITAs grow in proportion to somatic growth, while SVGs course in a more linear fashion in adapting to patient growth.
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Affiliation(s)
- Y Kameda
- Department of Surgery III, Nara Medical University, Kashihara, Nara, Japan.
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37
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Ueda T, Mizuguchi K, Tsuji T, Tabayashi N, Abe T, Naito H, Takewa Y, Taniguchi S. Regulation of perfusion pressure during cardiopulmonary bypass using sevoflurane. Int J Artif Organs 2001; 24:30-3. [PMID: 11266039] [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: 02/19/2023]
Abstract
In hypothermic cardiopulmonary bypass (CPB), various vasodilators are used to control the perfusion pressure. These agents, however, often decrease the pressure excessively, and the low perfusion pressure may persist until the end of CPB. In this study we evaluate the safety and characteristics of the regulation of perfusion pressure during CPB using a volatile anesthetic, sevoflurane which has an extremely low partition coefficient. Twenty adult patients who underwent cardiac surgery were studied. Sevoflurane was applied by a vaporizer inserted into the oxygenator gas supply line. Pump flows were fixed at 2.4 L/min/m2 during the hypothermic period. Sevoflurane concentration was adjusted to keep mean arterial pressure (MAP) between 40 and 70 mmHg during CPB. Hemodynamic and metabolic parameters were measured and compared to the group we previously treated with chlorpromazine. In all cases, MAP could be maintained adequately. In the sevoflurane group, systemic vascular resistance indices (SVRI) during the rewarming period and at the end of CPB were higher, and doses of norepinephrine needed at the end of CPB were significantly lower than in the chlorpromazine group. The regulation of perfusion pressure during CPB using sevoflurane was safe and could easily maintain adequate SVRI.
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Affiliation(s)
- T Ueda
- Department of Surgery III, Nara Medical University, Kashihara, Japan.
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Abstract
MOTIVATION Structural alignments of superfamily members often exhibit insertions and deletions of secondary structure elements (SSEs), yet conserved subsets of SSEs appear to be important for maintaining the fold and facilitating common functionalities. RESULTS A database of aligned SSEs was constructed from the structure-based alignments of protein superfamily members in the CAMPASS database. SSEs were classified into several types on the basis of their length and solvent accessibility and counts were made for the replacements of SSEs in different types at structurally aligned positions. The results, summarized as log-odds substitution matrices, can be used for two types of comparisons: (1) structure against structure, both with secondary structure assignments; and (2) structure against sequence with predicted secondary structures. The conservation of SSEs at each alignment position was defined as the deviation of observed SSE frequencies from the uniform distribution. This offers a useful resource to define and examine the core of superfamily folds. Even when the structure of only a single member of a superfamily is known, the extended method can be used to predict the conservation of SSEs. Such information will be useful when modelling the structure of other members of a superfamily or identifying structurally and functionally important positions in the fold.
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Affiliation(s)
- K Mizuguchi
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Old Addenbrookes Site, Cambridge CB2 1GA, UK.
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Nishizaki K, Mazda O, Dohi Y, Satoh E, Kawata T, Mizuguchi K, Yonemasu K, Kitamura S, Taniguchi S. In vivo gene transfer into rat hearts with Epstein-Barr virus-based episomal vectors using a gene gun. Transplant Proc 2000; 32:2413-4. [PMID: 11120222 DOI: 10.1016/s0041-1345(00)01721-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Nishizaki
- Department of Surgery III, Nara Medical University, Nara, Japan
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Honda M, Uesugi K, Yamazaki H, Dezawa A, Mizuguchi K, Yamaji T, Ishibashi M. Malignant pheochromocytoma lacking clinical features of catecholamine excess until the late stage. Intern Med 2000; 39:820-5. [PMID: 11030207 DOI: 10.2169/internalmedicine.39.820] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A malignant pheochromocytoma is described in a 71-year-old man. Osseous metastases became manifest 12 years after successful removal of the primary tumor which originated in paraganglionic tissue near the right adrenal gland. Although the patient had no symptoms of catecholamine excess initially, hypertension, tachycardia and excessive sweating appeared several months before his death, concomitantly with a sharp increase in noradrenaline secretion due to an accelerated growth of metastatic tumors. Since there is no histologic criterion of malignancy in this neoplasm, it would be prudent to consider every case of pheochromocytoma as potentially malignant and to follow-up carefully for a long time after removal of the primary tumor.
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Affiliation(s)
- M Honda
- Fourth Department of Medicine, Teikyo University School of Medicine, Kawasaki, Kanagawa
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41
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Nishizaki K, Mazda O, Dohi Y, Kawata T, Mizuguchi K, Kitamura S, Taniguchi S. In vivo gene gun-mediated transduction into rat heart with Epstein-Barr virus-based episomal vectors. Ann Thorac Surg 2000; 70:1332-7. [PMID: 11081894 DOI: 10.1016/s0003-4975(00)01708-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Gene guns have been used to transfer genes into various organs, but there has been no report of successful gene gun-mediated gene transfer into the heart. In this study, we assessed the possibility of gene therapy using a gene gun and an episomal plasmid vector. METHODS Gene transfer was performed using two sizes of gold particles and two plasmids (an episomal vector and a conventional plasmid vector). From the first to eighth week after the bombardment, rats were sacrificed. The excised hearts were subjected to X-gal staining and histologic examination. To ensure that plasmid was not distributed to organs other than the heart, the presence of the beta-gal sequence was examined by polymerase chain reaction analyses. RESULTS Gene expression persisted for 6 weeks. The episomal vector apparently contributed to long-lasting expression. Infiltration of monocytes or leukocytes was very faint. The beta-gal DNA was detected in bombarded hearts but not other organs. CONCLUSIONS Gene gun-mediated transfer of the episomal vector into beating heart may provide a simple, efficient, and useful strategy for gene therapy.
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Affiliation(s)
- K Nishizaki
- Department of Surgery III, Nara Medical University, Kashihara, Japan.
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Morita H, Sakai S, Miyajima N, Murakami T, Yamakawa T, Mizuguchi K. [A case of lung tumorlets with pulmonary carcinoid]. Kyobu Geka 2000; 53:969-71. [PMID: 11048453] [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] [Indexed: 02/18/2023]
Abstract
It has been postulated that differential pathological diagnosis of lung tumorlet from pulmonary carcinoid is very important to decide the therapeutic strategy, because both of them are pathologically consisted of similar type of cells originated from same cells. At the present, although lung tumorlet is considered to be a hyperplastic lesion of Kultschitzky cells which is located in the epithelial cell of the bronchial mucosa by stimuli such as hypoxia and inflammation, but it occasionally recognized in the normal lung and the concept that it is a subtype of carcnoid is also undeniable. In this paper, a case of lung tumorlet with minute pulmonary carcinoid suggesting a subtype of carcinoid operated upon in our department is presented. Although simple pulmonary resection is a method of choice for pulmonary carcinoid, but it is still controversial as to therapeutic strategy for the lung tumorlet, because it is a benign entity and not tumorous lesion. However pulmonary resection with a close subsequent followed-up study must be a best method of choice for the case with lung tumorlet includes a minute lesion of carcinoid seen in this particular case.
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Affiliation(s)
- H Morita
- Department of Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Morishita Y, Iinuma Y, Nakashima N, Majima K, Mizuguchi K, Kawamura Y. Total and pancreatic amylase measured with 2-chloro-4-nitrophenyl-4-O-beta-D-galactopyranosylmaltoside. Clin Chem 2000; 46:928-33. [PMID: 10894835] [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: 02/17/2023]
Abstract
BACKGROUND : Many different methods have been used to assay amylase activity, using nitrophenylated oligosaccharides as substrate; however, the hydrolysis steps in these methods are complex. METHODS : We developed a new continuously monitoring assay for amylase activity in biological fluids, using 2-chloro-4-nitrophenyl-4-O-beta-D-galactopyranosylmaltoside (GalG2CNP) as the substrate; this assay was used with anti-human salivary amylase monoclonal antibodies for specific determination of the pancreatic isoenzyme. Amylase converted GalG2CNP into beta-D-galactopyranosylmaltose and 2-chloro-4-nitrophenol, which was measured at 405 nm. RESULTS : GalG2CNP was cleaved between 2-chloro-4-nitrophenol and beta-D-galactopyranosylmaltose and did not undergo transfer reactions. The within-assay CVs (n = 20) for total amylase (T-AMY) and pancreatic amylase (P-AMY) were 0.6-1.6% and 0.5-2.5%, respectively; and day-to-day CVs (n = 10) for T-AMY and P-AMY were 0.8-3.7% and 0.6-4.1%, respectively. T-AMY and P-AMY activities in serum or urine obtained by the proposed method correlated well with those determined by the 2-chloro-4-nitrophenyl 4-O-beta-D-galactopyranosyl-beta-maltotetraoside method or the modified IFCC method. CONCLUSIONS : This novel assay for T-AMY and P-AMY measures both activities stoichiometrically, directly, and easily, and may be suitable for routine procedures.
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Affiliation(s)
- Y Morishita
- Department of Clinical Laboratory, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8560, Japan
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Morgan K, Stevens EB, Shah B, Cox PJ, Dixon AK, Lee K, Pinnock RD, Hughes J, Richardson PJ, Mizuguchi K, Jackson AP. beta 3: an additional auxiliary subunit of the voltage-sensitive sodium channel that modulates channel gating with distinct kinetics. Proc Natl Acad Sci U S A 2000; 97:2308-13. [PMID: 10688874 PMCID: PMC15797 DOI: 10.1073/pnas.030362197] [Citation(s) in RCA: 234] [Impact Index Per Article: 9.8] [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: 11/18/2022] Open
Abstract
The voltage-sensitive sodium channel confers electrical excitability on neurons, a fundamental property required for higher processes including cognition. The ion-conducting alpha-subunit of the channel is regulated by two known auxiliary subunits, beta1 and beta2. We have identified rat and human forms of an additional subunit, beta3. It is most closely related to beta1 and is the product of a separate gene localized to human chromosome 11q23.3. When expressed in Xenopus oocytes, beta3 inactivates sodium channel opening more slowly than beta1 does. Structural modeling has identified an amino acid residue in the putative alpha-subunit binding site of beta3 that may play a role in this difference. The expression of beta3 within the central nervous system differs significantly from beta1. Our results strongly suggest that beta3 performs a distinct neurophysiological function.
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Affiliation(s)
- K Morgan
- Departments of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom CB2 1QW
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Abstract
A sequence similarity search of the Drosophila nucleotide database using vertebrate amphiphysin as a query identified a cDNA that encodes a Drosophila amphiphysin. The predicted protein has conserved sequence domains that should enable it to dimerise and bind to dynamin. Structural modelling suggests that the Src-homology-3 (SH3) domains of vertebrate and Drosophila amphiphysins are highly similar, supporting the putative ability of the latter to bind dynamin. However, the fly amphiphysin shows less conservation to sequences in the vertebrate amphiphysins that bind other endocytic components such as clathrin, AP-2 and endophilin. Amphiphysin is a single-copy gene that maps to position 49B on polytene chromosomes. Messenger RNA of this amphiphysin is expressed widely during embryogenesis and has elevated expression in a number of sites including the foregut, hindgut and epidermis, but not in the central nervous system. Taken together, these data are consistent with a role for Drosophila amphiphysin in endocytosis, but the details of this role may differ from that of vertebrate amphiphysins.
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Affiliation(s)
- A Razzaq
- Department of Genetics, University of Cambridge, Downing Street, Cambridge, UK
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46
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Naito H, Kawata T, Mizuguchi K, Nishioka H, Kameda Y, Sakaguchi H, Yasukawa M, Nezu K, Taniguchi S. [Re-coronary artery bypass grafting using a MIDCAB technique in a patient with a patent RITA-LAD graft]. Kyobu Geka 1999; 52:1025-8. [PMID: 10554490] [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] [Indexed: 02/14/2023]
Abstract
In a patient with a patent RITA-LAD (right internal thoracic artery-left anterior descending artery) graft, re-CABG (re-coronary artery bypass grafting) with re-median sternotomy has been a high risk procedure. A 56-year-old male underwent 4-CABG (RITA-LAD, LITA-Dx, SVG-PL, and SVG-RCA) nine years ago. Coronary angiography showed that the RITA-LAD graft was well patent, but there was 95% stenosis distal to RITA-LAD anastomosis site. We performed re-CABG (right gastroepiploic artery-LAD; RGEA-LAD), using MIDCAB (minimally invasive direct coronary artery bypass) technique with neither re-median sternotomy nor cardiopulmonary bypass. The right gastroepiploic artery was harvested through a small upper median laparotomy and anastomosed to LAD through a small left anterior thoracotomy. The postoperative course was uneventful. This technique seems to be useful for re-revascularization of the LAD in a patient with a patent RITA-LAD graft.
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Affiliation(s)
- H Naito
- Department of Surgery III, Nara Medical University, Japan
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47
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Burke DF, Deane CM, Nagarajaram HA, Campillo N, Martin-Martinez M, Mendes J, Molina F, Perry J, Reddy BV, Soares CM, Steward RE, Williams M, Carrondo MA, Blundell TL, Mizuguchi K. An iterative structure-assisted approach to sequence alignment and comparative modeling. Proteins 1999; Suppl 3:55-60. [PMID: 10526352 DOI: 10.1002/(sici)1097-0134(1999)37:3+<55::aid-prot8>3.3.co;2-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Correct alignment of the sequence of a target protein with those of homologues of known three-dimensional structure is a key step in comparative modeling. Usually an iterative approach that takes account of the local and overall structural features is required. We describe such an approach that exploits databases of structural alignments of homologous proteins (HOMSTRAD, http:/(/)www-cryst.bioc.cam.ac.uk/ approximately homstrad) and protein superfamilies (CAMPASS, http:/(/)www-cryst.bioc.cam.ac.uk/ approximately campass), in which structure-based alignments are analyzed and formatted with the program JOY (http:/(/)www-cryst.bioc.cam.ac.uk/ approximately joy) to reveal conserved local structural features. The databases facilitate the recognition of a family or superfamily, they assist in the selection of useful parent structures, they are helpful in alignment of the target sequences with the parent set, and are useful for deriving relationships that can be used in validating models. In the iterative approach, a model is constructed on the basis of the proposed sequence alignment and this is then reexpressed in the JOY format and realigned with the parent set. This is repeated until the model and sequence alignment is optimized. We examine the case for comparison and use of multiple structures of family members, rather than a single parent structure. We use the targets attempted by our group in CASP3 to assess the value of such procedures.
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Affiliation(s)
- D F Burke
- Department of Biochemistry, University of Cambridge, United Kingdom
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Mizuguchi K, Dhanaraj V, Blundell TL, Murzin AG. N-ethylmaleimide-sensitive fusion protein (NSF) and CDC48 confirmed as members of the double-psi beta-barrel aspartate decarboxylase/formate dehydrogenase family. Structure 1999; 7:R215-6. [PMID: 10610264 DOI: 10.1016/s0969-2126(99)80169-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- K Mizuguchi
- Department of Biochemistry, University of Cambridge, UK
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Fukuoka K, Ajiki T, Yamamoto M, Fujiwara H, Onoyama H, Fujita T, Katayama N, Mizuguchi K, Ikuta H, Kuroda Y, Hanioka K. Complete agenesis of the dorsal pancreas. J Hepatobiliary Pancreat Surg 1999; 6:94-7. [PMID: 10436244 DOI: 10.1007/s005340050090] [Citation(s) in RCA: 30] [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: 11/25/2022]
Abstract
Pancreatic anomalies are occasionally reported, but complete agenesis of the dorsal pancreas is extremely rare. We report a 47-year-old woman with complete agenesis of the dorsal pancreas. This patient initially presented with jaundice. Computed tomography did not reveal the pancreatic corpus or tail. Endoscopic retrograde cholangiopancreatography and magnetic resonance cholangiopancreatography did not visualize the dorsal pancreatic duct. Choledochojejunostomy was performed because she had obstructive jaundice. At laparotomy, there was an enlarged pancreatic head, but no distal pancreas was seen. Histological examination of the pancreatic biopsy specimen showed scattered islets of Langerhans in diffuse fibrosis, with destruction of the glandular parenchyma. This case was diagnosed as complete agenesis of the dorsal pancreas.
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Affiliation(s)
- K Fukuoka
- First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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50
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Kawata T, Taniguchi S, Nishioka H, Kobayashi S, Mizuguchi K, Kameda Y, Sakaguchi S, Tsuji T, Kitamura S. Benefits accruing to grafting of the right internal thoracic artery to the left anterior descending artery in coronary artery bypass grafting. Jpn J Thorac Cardiovasc Surg 1999; 47:388-93. [PMID: 10496063 DOI: 10.1007/bf03218031] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES We have investigated the effects and outcome from grafting the right internal thoracic artery to the left anterior descending artery in coronary artery bypass grafting. METHODS We analyzed the findings in 185 patients who underwent coronary artery bypass grafting involving right internal thoracic artery-left anterior descending artery bypass. The survival rate, cardiac events related to the right internal thoracic artery-left anterior descending artery graft, and graft patency were investigated. In cardiac catheterization, the production of nitric oxide from the endothelium of the internal thoracic artery was measured as the plasma nitrite and nitrate levels by the Griess reaction. The reactions to acetylcholine infusion (5 micrograms) in the right internal thoracic artery (n = 4) were compared to those in the left internal thoracic artery (n = 9) grafts. RESULTS The hospital mortality rate was 0.5%. The actuarial survival rate at 11 years after operation was 98.81%. The rate of freedom from cardiac events at 11 years after operation was 92.08%. The rate of patency of the right internal thoracic artery-left anterior descending artery was 97.0% in 133 patients. Nitric oxide production was calculated as (total nitrite plus nitrate production in response to stimulation by acetylcholine-total nitrite plus nitrate level before acetylcholine load)/(total nitrite plus nitrate level before acetylcholine load). There was no significant difference in changes in plasma concentration in response to acetylcholine stimulation between the right internal thoracic artery-left anterior descending artery and left internal thoracic artery-left anterior descending artery groups (20 +/- 29% versus 5 +/- 10%). CONCLUSIONS The right internal thoracic artery-left anterior descending artery grafts exhibited good patency and release of nitric oxide in response to acetylcholine loading, similar to left internal thoracic artery-left anterior descending artery grafts.
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Affiliation(s)
- T Kawata
- Department of Surgery III, Nara Medical University, Japan
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