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Nakao Y, Fukuda T, Zhang Q, Sanui T, Shinjo T, Kou X, Chen C, Liu D, Watanabe Y, Hayashi C, Yamato H, Yotsumoto K, Tanaka U, Taketomi T, Uchiumi T, Le AD, Shi S, Nishimura F. Exosomes from TNF-α-treated human gingiva-derived MSCs enhance M2 macrophage polarization and inhibit periodontal bone loss. Acta Biomater 2021; 122:306-324. [PMID: 33359765 PMCID: PMC7897289 DOI: 10.1016/j.actbio.2020.12.046] [Citation(s) in RCA: 182] [Impact Index Per Article: 60.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/25/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023]
Abstract
Mesenchymal stem cell (MSC)–derived exosome plays a central role in the cell-free therapeutics involving MSCs and the contents can be customized under disease-associated microenvironments. However, optimal MSC-preconditioning to enhance its therapeutic potential is largely unknown. Here, we show that preconditioning of gingival tissue-derived MSCs (GMSCs) with tumor necrosis factor-alpha (TNF-α) is ideal for the treatment of periodontitis. TNF-α stimulation not only increased the amount of exosome secreted from GMSCs, but also enhanced the exosomal expression of CD73, thereby inducing anti-inflammatory M2 macrophage polarization. The effect of GMSC-derived exosomes on inflammatory bone loss were examined by ligature-induced periodontitis model in mice. Local injection of GMSC-derived exosomes significantly reduced periodontal bone resorption and the number of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts, and these effects were further enhanced by preconditioning of GMSCs with TNF-α. Thus, GMSC-derived exosomes also exhibited anti-osteoclastogenic activity. Receptor activator of NF-κB ligand (RANKL) expression was regulated by Wnt5a in periodontal ligament cells (PDLCs), and exosomal miR-1260b was found to target Wnt5a-mediated RANKL pathway and inhibit its osteoclastogenic activity. These results indicate that significant ability of the TNF-α-preconditioned GMSC-derived exosomes to regulate inflammation and osteoclastogenesis paves the way for establishment of a therapeutic approach for periodontitis.
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Affiliation(s)
- Yuki Nakao
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takao Fukuda
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan; Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Qunzhou Zhang
- Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, PA, USA
| | - Terukazu Sanui
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takanori Shinjo
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Xiaoxing Kou
- Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA; South China Center of Craniofacial Stem Cell Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, China
| | - Chider Chen
- Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA; Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, PA, USA
| | - Dawei Liu
- Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA; Department of Orthodontics, Peking University School and Stomatology, Peking, China
| | - Yukari Watanabe
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Chikako Hayashi
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Hiroaki Yamato
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Karen Yotsumoto
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Urara Tanaka
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center, Kurume University School of Medicine, Fukuoka, Japan
| | - Takeshi Uchiumi
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Anh D Le
- Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, PA, USA
| | - Songtao Shi
- Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA; South China Center of Craniofacial Stem Cell Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, China
| | - Fusanori Nishimura
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
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Yamato H, Sanui T, Yotsumoto K, Nakao Y, Watanabe Y, Hayashi C, Aihara R, Iwashita M, Tanaka U, Taketomi T, Fukuda T, Nishimura F. Combined application of geranylgeranylacetone and amelogenin promotes angiogenesis and wound healing in human periodontal ligament cells. J Cell Biochem 2021; 122:716-730. [PMID: 33529434 DOI: 10.1002/jcb.29903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/06/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022]
Abstract
Amelogenin directly binds to glucose-regulated protein 78 (Grp78). Cell migration activity is expected to increase when human periodontal ligament cells (hPDLCs) overexpressing Grp78 are treated with amelogenin. Geranylgeranylacetone (GGA) is a drug that induces the expression of heat shock protein and is routinely used to treat gastric ulcers. Here, we investigated the changes in the properties and behavior of hPDLCs in response to treatment with GGA and the synergistic effects of amelogenin stimulation in hPDLCs pretreated with GGA for the establishment of a novel periodontal tissue regenerative therapy. We observed that GGA treatment increased Grp78 protein expression in hPDLCs and enhanced cell migration. Microarray analysis demonstrated that increased Grp78 expression triggered the production of angiopoietin-like 4 and amphiregulin, which are involved in the enhancement of angiogenesis and subsequent wound healing via the activation of hypoxia-inducible factor 1α and peroxisome proliferator-activated receptors as well as the phosphorylation of cAMP response element-binding protein and protein kinase A. Moreover, the addition of recombinant murine amelogenin (rM180) further accelerated hPDLC migration and tube formation of human umbilical vein endothelial cells due to the upregulation of interleukin-8 (IL-8), monocyte chemotactic protein 1, and IL-6, which are also known as angiogenesis-inducing factors. These findings suggest that the application of GGA to gingival tissue and alveolar bone damaged by periodontal disease would facilitate the wound healing process by inducing periodontal ligament cells to migrate to the root surface and release cytokines involved in tissue repair. Additionally, supplementation with amelogenin synergistically enhanced the migratory capacity of these cells while actively promoting angiogenesis. Therefore, the combined application of GGA and amelogenin may establish a suitable environment for periodontal wound healing and further drive the development of novel therapeutics for periodontal tissue regeneration.
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Affiliation(s)
- Hiroaki Yamato
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Terukazu Sanui
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Karen Yotsumoto
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yuki Nakao
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yukari Watanabe
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Chikako Hayashi
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Ryosuke Aihara
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Misaki Iwashita
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Urara Tanaka
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Takao Fukuda
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Fusanori Nishimura
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Yotsumoto K, Sanui T, Tanaka U, Yamato H, Alshargabi R, Shinjo T, Nakao Y, Watanabe Y, Hayashi C, Taketomi T, Fukuda T, Nishimura F. Amelogenin Downregulates Interferon Gamma-Induced Major Histocompatibility Complex Class II Expression Through Suppression of Euchromatin Formation in the Class II Transactivator Promoter IV Region in Macrophages. Front Immunol 2020; 11:709. [PMID: 32373130 PMCID: PMC7186442 DOI: 10.3389/fimmu.2020.00709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/26/2020] [Accepted: 03/30/2020] [Indexed: 12/29/2022] Open
Abstract
Enamel matrix derivatives (EMDs)-based periodontal tissue regenerative therapy is known to promote healing with minimal inflammatory response after periodontal surgery, i. e., it promotes wound healing with reduced pain and swelling. It has also been reported that macrophages stimulated with amelogenin, a major component of EMD, produce various anti-inflammatory cytokines and growth factors. We previously found that stimulation of monocytes with murine recombinant M180 (rM180) amelogenin suppresses major histocompatibility complex class II (MHC II) gene expression using microarray analysis. However, the detailed molecular mechanisms for this process remain unclear. In the present study, we demonstrated that rM180 amelogenin selectively downmodulates the interferon gamma (IFNγ)-induced cell surface expression of MHC II molecules in macrophages and this mechanism mediated by rM180 appeared to be widely conserved across species. Furthermore, rM180 accumulated in the nucleus of macrophages at 15 min after stimulation and inhibited the protein expression of class II transactivator (CIITA) which controls the transcription of MHC II by IFNγ. In addition, reduced MHC II expression on macrophages pretreated with rM180 impaired the expression of T cell activation markers CD25 and CD69, T cell proliferation ability, and IL-2 production by allogenic CD4+ T lymphocytes in mixed lymphocyte reaction assay. The chromatin immunoprecipitation assay showed that IFNγ stimulation increased the acetylation of histone H3 lysine 27, which is important for conversion to euchromatin, as well as the trimethylation of histone H3 lysine 4 levels in the CIITA promoter IV (p-IV) region, but both were suppressed in the group stimulated with IFNγ after rM180 treatment. In conclusion, the present study shows that amelogenin suppresses MHC II expression by altering chromatin structure and inhibiting CIITA p-IV transcription activity, and attenuates subsequent T cell activation. Clinically observed acceleration of wound healing after periodontal surgery by amelogenin may be partially mediated by the mechanism elucidated in this study. In addition, the use of recombinant amelogenin is safe because it is biologically derived protein. Therefore, amelogenin may also be used in future as an immunosuppressant with minimal side effects for organ transplantation or MHC II-linked autoimmune diseases such as type I diabetes, multiple sclerosis, and rheumatoid arthritis, among others.
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Affiliation(s)
- Karen Yotsumoto
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Terukazu Sanui
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Urara Tanaka
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Hiroaki Yamato
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Rehab Alshargabi
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takanori Shinjo
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yuki Nakao
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yukari Watanabe
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Chikako Hayashi
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Takao Fukuda
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Fusanori Nishimura
- Division of Oral Rehabilitation, Department of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Sanui T, Takeshita M, Fukuda T, Tanaka U, Alshargabi R, Aida Y, Nishimura F. Adhesion attenuates respiratory burst induced by different modes of triggering in resting or LPS-primed neutrophils. Immunobiology 2017; 222:865-871. [DOI: 10.1016/j.imbio.2017.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/06/2017] [Indexed: 01/09/2023]
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Sanui T, Takeshita M, Fukuda T, Tanaka U, Alshargabi R, Aida Y, Nishimura F. Roles of serum in innate immune responses of human leukocytes to synthetic lipopeptide. Int Immunopharmacol 2017. [PMID: 28633072 DOI: 10.1016/j.intimp.2017.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tripalmitoyl-S-glyceryl-l-Cys-Ser-(Lys)4 (Pam3CSK4) is a highly conserved molecular motif found in various classes of lipoproteins. The requirement for leukocyte to respond to synthetic Pam3CSK4 were studied. Pam3CSK4 primed neutrophils for a respiratory burst in a serum-dependent manner. Pam3CSK4 upregulated CD11b, CD14, and cytochrome b558, and downregulated Leu-8. Treatment of neutrophils with anti-CD14 antibodies and treatment of serum with anti-LPS binding protein (LBP) antibodies resulted in the inhibition of priming for respiratory burst by Pam3CSK4. It should be noted that LBP could not replicate the effects of serum in priming of neutrophils for respiratory burst by Pam3CSK4. Serum LBP bound to immobilized Pam3CSK4. Pam3CSK4 induced the interleukin-8 (IL-8) production by leukocytes in a serum-dependent manner. Further, Pam3CSK4-induced priming of neutrophils for respiratory burst was not inhibited by the LPS antagonists LA-14-PP, Rhodobacter sphaeroides LPS, or E5531, and Pam3CSK4-induced IL-8 production by leukocytes was not affected by LPS antagonist, E5531, indicating that Pam3CSK4 was recognized by a different receptor than LPS. Thus, Pam3CSK4 and LPS had similar biological activities and similar requirement to act on leukocytes, but were recognized by different receptors. Serum in the action of Pam3CSK4 on leukocytes was not replicated by LBP, suggesting that Pam3CSK4 might be disaggregated by serum to result in the activation of leukocytes.
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Affiliation(s)
- Terukazu Sanui
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Masaaki Takeshita
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Takao Fukuda
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Urara Tanaka
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Rehab Alshargabi
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Yoshitomi Aida
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
| | - Fusanori Nishimura
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
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Sanui T, Fukuda T, Yamamichi K, Toyoda K, Tanaka U, Yotsumoto K, Taketomi T, Nishimura F. Microarray Analysis of the Effects of Amelogenin on U937 Monocytic Cells. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/ajmb.2017.72009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Atomura R, Sanui T, Fukuda T, Tanaka U, Toyoda K, Taketomi T, Yamamichi K, Akiyama H, Nishimura F. Inhibition of Sprouty2 polarizes macrophages toward an M2 phenotype by stimulation with interferon γ and Porphyromonas gingivalis lipopolysaccharide. Immun Inflamm Dis 2016; 4:98-110. [PMID: 27042307 PMCID: PMC4768065 DOI: 10.1002/iid3.99] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/21/2016] [Accepted: 01/23/2016] [Indexed: 01/10/2023]
Abstract
Periodontitis is a chronic inflammatory disorder caused by specific bacteria residing in the biofilm, particularly Porphyromonas gingivalis (Pg). Sprouty2 (Spry2) functions as a negative regulator of the fibroblast growth factor (FGF) signaling pathway. We previously demonstrated that sequestration of Spry2 induced proliferation and osteogenesis in osteoblastic cells by basic FGF (bFGF) and epidermal growth factor (EGF) stimulation in vitro, but diminished cell proliferation in gingival epithelial cells. In addition, Spry2 knockdown in combination with bFGF and EGF stimulation increases periodontal ligament cell proliferation and migration accompanied by prevention of osteoblastic differentiation. In this study, we investigated the mechanisms through which Spry2 depletion by interferon (IFN) γ and Pg lipopolysaccharide (LPS) stimulation affected the physiology of macrophages in vitro. Transfection of macrophages with Spry2 small‐interfering RNA (siRNA) promoted the expression of genes characteristic of M2 alternative activated macrophages, induced interleukin (IL)‐10 expression, and enhanced arginase activity, even in cells stimulated with IFNγ and Pg LPS. In addition, we found that phosphoinositide 3‐kinase (PI3K) and AKT activation by Spry2 downregulation enhanced efferocytosis of apoptotic cells by increasing Rac1 activation and decreasing nuclear factor kappa B (NFκB) p65 phosphorylation but not signal transducer and activator of transcription 1 (STAT1) phosphorylation. Collectively, our results suggested that topical administration of Spry2 inhibitors may efficiently resolve inflammation in periodontal disease as macrophage‐based anti‐inflammatory immunotherapy and may create a suitable environment for periodontal wound healing. These in vitro findings provide a molecular basis for new therapeutic approaches in periodontal tissue regeneration.
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Affiliation(s)
- Ryo Atomura
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Terukazu Sanui
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Takao Fukuda
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Urara Tanaka
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Kyosuke Toyoda
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center Kurume University School of Medicine Fukuoka Japan
| | - Kensuke Yamamichi
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Hajime Akiyama
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Fusanori Nishimura
- Division of Oral Rehabilitation Department of Periodontology Faculty of Dental Science Kyushu University Fukuoka Japan
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Fukuda T, Sanui T, Toyoda K, Tanaka U, Yamamichi K, Taketomi T, Nishimura F. New Therapeutic Strategy for Regenerating Periodontal Tissue Based on the Combination of Amelogenin and Reapplications of Existing Grp78 Inducer. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2576-1471.1000118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Toyoda K, Fukuda T, Sanui T, Tanaka U, Yamamichi K, Atomura R, Maeda H, Tomokiyo A, Taketomi T, Uchiumi T, Nishimura F. Grp78 Is Critical for Amelogenin-Induced Cell Migration in a Multipotent Clonal Human Periodontal Ligament Cell Line. J Cell Physiol 2015; 231:414-27. [DOI: 10.1002/jcp.25087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 06/30/2015] [Indexed: 01/28/2023]
Affiliation(s)
- Kyosuke Toyoda
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Takao Fukuda
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Terukazu Sanui
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Urara Tanaka
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Kensuke Yamamichi
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Ryo Atomura
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Hidefumi Maeda
- Department of Endodontology; Kyushu University Hospital; Fukuoka Japan
| | - Atsushi Tomokiyo
- Department of Endodontology; Kyushu University Hospital; Fukuoka Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center; Kurume University School of Medicine; Kurume, Fukuoka Japan
| | - Takeshi Uchiumi
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
| | - Fusanori Nishimura
- Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science; Kyushu University; Fukuoka Japan
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Tanaka U, Sanui T, Fukuda T, Toyoda K, Taketomi T, Atomura R, Yamamichi K, Maeda H, Nishimura F. Sprouty2 inhibition promotes proliferation and migration of periodontal ligament cells. Oral Dis 2015; 21:977-86. [DOI: 10.1111/odi.12369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 08/16/2015] [Accepted: 08/26/2015] [Indexed: 11/30/2022]
Affiliation(s)
- U Tanaka
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - T Sanui
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - T Fukuda
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - K Toyoda
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - T Taketomi
- Dental and Oral Medical Centre; Kurume University School of Medicine; Fukuoka Japan
| | - R Atomura
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - K Yamamichi
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - H Maeda
- Department of Endodontology and Operative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - F Nishimura
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
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Sanui T, Tanaka U, Fukuda T, Toyoda K, Taketomi T, Atomura R, Yamamichi K, Nishimura F. Mutation of Spry2 Induces Proliferation and Differentiation of Osteoblasts but Inhibits Proliferation of Gingival Epithelial Cells. J Cell Biochem 2015; 116:628-39. [DOI: 10.1002/jcb.25014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 11/06/2014] [Indexed: 01/24/2023]
Affiliation(s)
- Terukazu Sanui
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Urara Tanaka
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Takao Fukuda
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Kyosuke Toyoda
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Takaharu Taketomi
- Dental and Oral Medical Center; Kurume University School of Medicine; Kurume Fukuoka Japan
| | - Ryo Atomura
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Kensuke Yamamichi
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Fusanori Nishimura
- Department of Periodontology; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
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Bize S, Diddams SA, Tanaka U, Tanner CE, Oskay WH, Drullinger RE, Parker TE, Heavner TP, Jefferts SR, Hollberg L, Itano WM, Bergquist JC. Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock. Phys Rev Lett 2003; 90:150802. [PMID: 12732024 DOI: 10.1103/physrevlett.90.150802] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2002] [Revised: 02/27/2003] [Indexed: 05/24/2023]
Abstract
Over a two-year duration, we have compared the frequency of the 199Hg+ 5d(10)6s (2)S(1/2)(F=0)<-->5d(9)6s(2) (2)D(5/2)(F=2) electric-quadrupole transition at 282 nm with the frequency of the ground-state hyperfine splitting in neutral 133Cs. These measurements show that any fractional time variation of the ratio nu(Cs)/nu(Hg) between the two frequencies is smaller than +/-7 x 10(-15) yr(-1) (1sigma uncertainty). According to recent atomic structure calculations, this sets an upper limit to a possible fractional time variation of g(Cs)(m(e)/m(p))alpha(6.0) at the same level.
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Affiliation(s)
- S Bize
- Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA.
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Ezaki Y, Tanaka U, Minoshima S, Endou M, Kuwaki K, Arimura Y, Nakabayashi K, Nagasawa T. [Focal segmental glomerulosclerosis associated with type C virus hepatitis and decrement of proteinuria by interferon-alpha therapy]. Nihon Jinzo Gakkai Shi 1999; 41:83-8. [PMID: 10361424] [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: 02/12/2023]
Abstract
Focal segmental glomerulosclerosis (FSGS) associated with type C virus (HCV) hepatitis has not been described in the literature to date. However, we experienced a 30-year-old man, who had had HCV hepatitis, developed nephrotic syndrome and was admitted to our hospital. The first renal biopsy showed FSGS which was diagnosed by light, immunofluorescent, and electron microscopic study. FSGS diagnosis was based upon the findings of focal segmental glomerular sclerosis associated with hyalinosis and foam cells, segmental deposition of IgM and C3 on glomeruli, and epithelial cell vacuolization in the Bowman's space. HCV hepatitis was treated with interferon-alpha (INF-alpha) over 6 months. The treatment brought the disappearance of not only HCV-RNA from the blood, but also the manifestation of nephrotic syndrome. Therefore, the second renal biopsy was performed, but did not reveal any great pathological improvement. Five months later after the remission, he again had an elevated HCV-RNA level and a relapse of nephrotic syndrome. He was retreated with the same therapy and achieved a second remission of nephrotic syndrome. FSGS associated with HCV hepatitis is described first and the implication of INF-therapy in the improvement of proteinuria is discussed.
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Affiliation(s)
- Y Ezaki
- First Department of Internal Medicine, Kyorin University School of Medicine, Japan
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14
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Fujii A, Arimura Y, Minoshima S, Kobayashi M, Yoshihara K, Tanaka U, Nakabayashi K, Kitamoto K, Nagasawa T, Takahashi H. [MPO-ANCA related vasculitis with pulmonary hemorrhage during propylthiouracil (PTU) therapy]. Ryumachi 1997; 37:788-793. [PMID: 9492566] [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: 05/22/2023]
Abstract
We described a case of pulmonary hemorrhage associated with myeloperoxidase-antineurophil cytoplasmic antibodies (MPO-ANCA) without renal involvement during propylthiouracil (PTU) treatment. A 36-years old female was admitted to our hospital because of progressive dyspnea with hemosputum after flu-like symptom and episcleritis. She had been receiving PTU for three years to Graves' disease. On admission her chest Xp showed bilateral massive infiltrative shadow and bronchofiberscopy demonstrated pulmonary hemorrhage. MPO-ANCA and anti-thyroperoxidase antibodies were positive, but she had normal urinalysis and normal renal function. After withdraw of PTU, pulmonary hemorrhage disappeared. But 15 days later pulmonary hemorrhage recurred associated with high MPO-ANCA titer. Corticosteroid bolus therapy and oral cyclophasphamide administration improved pulmonary hemorrhage, and MPO-ANCA titer also decreased. It is suggested that MPO-ANCA and PTU might be closely related to the pathogenesis of pulmonary hemorrhage in this case.
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Affiliation(s)
- A Fujii
- First Department of Internal Medicine, Kyorin University, Tokyo
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15
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Tanaka U, Imajo H, Hayasaka K, Ohmukai R, Watanabe M, Urabe S. Laser cooling and isotope separation of Cd(+) ions conf ined in a linear Paul trap. Opt Lett 1997; 22:1353-1355. [PMID: 18188237 DOI: 10.1364/ol.22.001353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Cadmium ions in a natural isotope mixture have been trapped in a linear Paul trap and laser cooled. The fluorescence spectra from all even isotopes, including the (108)Cd(+) isotopes with a natural abundance of 0.89%, were observed. Additionally, we eliminated the heavier isotopes from the trapping region by adjusting the tuning of the laser frequency and by changing the dc voltage applied to the end electrodes.
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16
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Kawakami K, Ling QC, Mori Y, Tanaka U, Shimada T. [Usefulness of measurement of blood flow by RI plethysmography]. Kaku Igaku 1997; 34:151-7. [PMID: 9136523] [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: 02/04/2023]
Abstract
We have developed the RI plethysmography, and have applied it to ordinary clinic diagnosis and the evaluation of treatment. The subjects were 58 cases (39 cases of the obstruction of the peripheral blood circulation: ASO 24 cases, TAO 4 cases and arterial sclerotic change 11 cases; the non-abnormal control was 19 cases). The clinical benefit of this method was evaluated. In the cases with 1 and 2 degrees of Fontaine's classification and ASO and TAO, the blood flow of legs measured by our method significantly decreased in association with symptoms and angiographic findings. This method is suitable to the determination of angiography and evaluation of the effect of treatment.
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Affiliation(s)
- K Kawakami
- Department of Radiology, Jikei University School of Medicine
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17
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Soejima A, Suzuki M, Ishizuka S, Miyake N, Karube M, Fukuoka K, Minoshima S, Tanaka U, Arimura Y, Nakabayasi K, Kitamoto K, Saitou M, Nagasawa T. [Clinical investigation of 10 cases with acute renal failure induced by neuroleptics]. Nihon Jinzo Gakkai Shi 1996; 38:335-41. [PMID: 8828352] [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: 02/02/2023]
Abstract
It is well known that the myoglobinuric acute renal failure caused by drugs is an important clinical aspect of nephrology. On the other hand, neuroleptic malignant syndrome is an uncommon, but potentially fatal, idiosyncratic reaction to neuroleptics and is characterized by muscular rigidity, fever, autonomic dysfunction and altered consciousness. The most common serious complication of malignant syndrome is rhabdomyolysis. We investigated 10 cases with acute renal failure induced by haloperidol and other neuroleptics. At the time they developed acute renal failure, the patients were taking a wide variety of medications. However, seven of the patients who developed acute renal failure, had received haloperidol, phenothiazine and anticholinaergic drugs, and 2 cases with acute renal failure were taking lithium. Characteristic clinical manifestations of malignant syndrome were observed in 7 patients who had been administered haloperidol orally or intravenously. All of the patients with acute renal failure induced by haloperidol, lithium and other neuroleptics were treated successfully with blood purification therapy (HD or HDF). We concluded that acute renal failure associated with malignant syndrome evoked by haloperidol is an indication for blood purification therapy.
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Affiliation(s)
- A Soejima
- First Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan
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18
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Tanaka U, Imajo H, Hayasaka K, Ohmukai R, Watanabe M, Urabe S. Determination of the ground-state hyperfine splitting of trapped 113Cd+ ions. Phys Rev A 1996; 53:3982-3985. [PMID: 9913361 DOI: 10.1103/physreva.53.3982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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19
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Imajo H, Hayasaka K, Ohmukai R, Tanaka U, Watanabe M, Urabe S. High-resolution ultraviolet spectra of sympathetically-laser-cooled Cd+ ions. Phys Rev A 1996; 53:122-125. [PMID: 9912865 DOI: 10.1103/physreva.53.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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20
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Arimura Y, Minoshima S, Tanaka U, Fujii A, Kobayashi M, Nakabayashi K, Kitamoto K, Nagasawa T. [Pulmonary involvement in patients with myeloperoxidase specific-antineutrophil cytoplasmic antibody]. Ryumachi 1995; 35:46-55. [PMID: 7732490] [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: 01/26/2023]
Abstract
In order to examine the clinical features of pulmonary involvement in patients with myeloperoxidase specific-antineutrophil cytoplasmic antibody (MPO-ANCA), 46 MPO-ANCA positive patients with collagen-vascular disease and glomerulonephritis were investigated. Twenty eight patients (60.8%) had pulmonary involvement without tumor and infection, 20 (43.5%) of MPO-ANCA positive patients had interstitial pneumonitis, 11 (23.9%) had pulmonary hemorrhage, 3 had asthma (6.5%) and 7 had both interstitial pneumonitis and pulmonary hemorrhage. Patients with pulmonary involvement were older (mean age 61.1) and they had higher inflammatory acute phase reactants and higher mortality (42.9%) than patients without pulmonary involvement. Pulmonary hemorrhage revealed on both lung fields in 10 patients, 7 patients required artificial respirator and 6 died. Titer of MPO-ANCA increased paralleled with progression of pulmonary hemorrhage. Interstitial fibrosis revealed predominantly lower and lateral side of the lung. It is suggested that MPO-ANCA may be closely related to the pathogenesis of pulmonary hemorrhage and interstitial pneumonia. Careful management is needed in patients with pulmonary involvement, especially pulmonary hemorrhage in patients with MPO-ANCA.
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Affiliation(s)
- Y Arimura
- First Department of Internal Medicine, Kyorin University, School of Medicine, Tokyo
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Arimura Y, Minoshima S, Kamiya Y, Tanaka U, Nakabayashi K, Kitamoto K, Nagasawa T, Sasaki T, Suzuki K. Serum myeloperoxidase and serum cytokines in anti-myeloperoxidase antibody-associated glomerulonephritis. Clin Nephrol 1993; 40:256-64. [PMID: 8281714] [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: 01/29/2023] Open
Abstract
Anti-MPO antibodies, serum MPO and cytokines were examined in 106 patients with glomerulonephritis. Twenty-three patients had anti-MPO antibodies and crescent formation; 17 had crescentic glomerulonephritis (CRGN) and the remaining 6 had focal segmental necrosis with less than 50% crescent formation in the observed glomeruli. Pauci-immune CRGN accounted for 28 of 43 CRGN cases. Anti-MPO antibody titers were significantly higher in the cellular crescent stage and their titers correlated well with the number of crescents. Clinical observation revealed that 11 of 18 patients with anti-MPO antibody-associated CRGN had a respiratory tract infection prior to the onset of overt glomerulonephritis. Serum MPO was detected in 20 of 23 patients with anti-MPO antibodies and the amounts of MPO were especially high in the cellular crescent stage and correlated with anti-MPO antibodies. TNF-alpha and IL-6 were also detected in the sera in parallel with the anti-MPO antibody titers. These data suggest that anti-MPO antibodies, TNF-alpha and IL-6, induced by the infection, may activate neutrophils and MPO itself released from neutrophils, may play an important pathogenetic role in glomerular capillary necrosis leading to CRGN.
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Affiliation(s)
- Y Arimura
- First Department of Internal Medicine, Kyorin University, School of Medicine, Tokyo, Japan
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Arimura Y, Nohmi K, Tanaka U, Nagasawa T. [Clinical investigation of anti-myeloperoxidase antibodies in patients with glomerulonephritis with crescent formation]. Nihon Jinzo Gakkai Shi 1990; 32:1087-93. [PMID: 1962827] [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: 12/29/2022]
Abstract
Anti-neutrophil cytoplasmic antibodies (ANCA) have been found in patients with systemic vasculitis and crescentic glomerulonephritis. Recently two types of ANCA were identified, one is anti-myeloperoxidase antibodies (Anti-MPO Ab) stained perinuclear pattern of alcohol-fixed neutrophils by immunofluorescence test, and the other is autoantibodies with no reactivity with myeloperoxidase stained diffuse cytoplasmic pattern (C-ANCA). We investigated 59 patients with various glomerulonephritis with or without crescent to detect anti-MPO Ab and C-ANCA by an enzyme-linked immunosorbent assay. The results were as follows: 1) Anti-MPO Ab were detected only in patients with various glomerulonephritis with crescent. 2) Titers of anti-MPO Ab were high related to percentage of crescent in some cases of glomerulonephritis. 3) Titers of anti-MPO Ab were elevated at stage of cellular and fibro-cellular crescent. 4) C-ANCA were detected only in patients with Wegener's granulomatosis. These data suggested that anti-MPO Ab may play important roles in crescent formation and may be a marker of crescent formation in various glomerulonephritis.
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Affiliation(s)
- Y Arimura
- First Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan
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Asoh Y, Nakamura M, Maeda T, Shiogai T, Ogashiwa M, Takeuchi K, Watanabe K, Tanaka U, Matsuo E. [Brain metastasis from primary pericardial mesothelioma. Case report]. Neurol Med Chir (Tokyo) 1990; 30:884-7. [PMID: 1709470 DOI: 10.2176/nmc.30.884] [Citation(s) in RCA: 8] [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: 12/28/2022] Open
Abstract
A 50-year-old female was admitted because of nausea, vomiting, and cerebellar ataxia. Computed tomography scan revealed an enhanced mass accompanied with a cyst in the right cerebellar hemisphere. The mass situated in the subcortical region was removed. Histologically, highly vascular tumor cells lined the cavities. Postoperative radio- and chemotherapy were administered and the clinical symptoms improved gradually. Two months later, the patient complained of dyspnea. Chest X-ray on second admission demonstrated cardiomegaly. Hemorrhagic pericardial effusion amounting to 1000 ml was aspirated by pericardial puncture. Papillary clusters of tumor cells were demonstrated in the pericardial effusion. The patient died of cardiac failure. At necropsy solid tumors were located in the heart, lung, left inguinal region, and cerebellum. Histological diagnosis was mesothelioma arising from the heart. Primary pericardial mesotheliomas are rare; approximately 106 cases have been reported. Pericardial mesothelioma frequently spreads to the adjacent pleura and mediastinum, but distant metastases are extremely rare because patients with pericardial mesothelioma tend to die early due to cardiac failure or cardiac tamponade.
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Affiliation(s)
- Y Asoh
- Department of Neurosurgery, Kyorin University, Tokyo
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Arimura Y, Nakabayashi K, Kitamoto K, Nagasawa T, Tanaka U, Nakamura W, Fujita C, Takimoto M. [Mucormycosis in a hemodialysis patient with iron overload]. Nihon Naika Gakkai Zasshi 1988; 77:1884-7. [PMID: 3074984 DOI: 10.2169/naika.77.1884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Akai K, Uchigasaki S, Tanaka U, Komatsu A. Normal pressure hydrocephalus. Neuropathological study. Acta Pathol Jpn 1987; 37:97-110. [PMID: 3577765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The pathological changes in the brains of seven patients who had been clinically diagnosed as normal pressure hydrocephalus (NPH) are described and the possible etiological mechanisms are discussed. The pathological findings in all cases consisted of demyelination akin to Binswanger's type of encephalopathy, especially in the frontal lobes. Arteriosclerosis accompanied by occasional organized thrombi and scattered microinfarcts in the periventricular white matter were seen. Focal leptomeningeal fibrosis, diminution of arachnoidal granulations, and non-specific aging processes were noted. Among the above of particular interest, was the degeneration of both periventricular and deep white matters with microinfarcts, and moderate to severe arteriosclerosis. On the basis of these observations, we assume that the degeneration in the white matter is not merely a secondary change due to the result of enlargement of ventricle, but plays an important role in the development of NPH. The development of NPH requires not only the disturbance of cerebrospinal fluid, but also the pre- or coexisting vulnerability in the white matter caused by variables such as ischemia, hypoxia, and trauma.
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Shinoda M, Kodama M, Teramura Y, Tanaka U, Fujita M. [Transposition of ileo-colon as a gastric reservoir and its clinical experience]. Nursing 1970; 42:1-11. [PMID: 5203679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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