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Sato S, Kawasaki T, Hatano R, Koyanagi Y, Takahashi Y, Ohnuma K, Morimoto C, Dudek SM, Tatsumi K, Suzuki T. Functional roles of CD26/DPP4 in lipopolysaccharide-induced lung injury. Am J Physiol Lung Cell Mol Physiol 2024; 326:L562-L573. [PMID: 38469626 DOI: 10.1152/ajplung.00392.2022] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/01/2024] [Accepted: 02/27/2024] [Indexed: 03/13/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by dysregulated inflammation and increased permeability of lung microvascular cells. CD26/dipeptidyl peptidase-4 (DPP4) is a type II membrane protein that is expressed in several cell types and mediates multiple pleiotropic effects. We previously reported that DPP4 inhibition by sitagliptin attenuates lipopolysaccharide (LPS)-induced lung injury in mice. The current study characterized the functional role of CD26/DPP4 expression in LPS-induced lung injury in mice, isolated alveolar macrophages, and cultured lung endothelial cells. In LPS-induced lung injury, inflammatory responses [bronchoalveolar lavage fluid (BALF) neutrophil numbers and several proinflammatory cytokine levels] were attenuated in Dpp4 knockout (Dpp4 KO) mice. However, multiple assays of alveolar capillary permeability were similar between the Dpp4 KO and wild-type mice. TNF-α and IL-6 production was suppressed in alveolar macrophages isolated from Dpp4 KO mice. In contrast, in cultured mouse lung microvascular endothelial cells (MLMVECs), reduction in CD26/DPP4 expression by siRNA resulted in greater ICAM-1 and IL-6 expression after LPS stimulation. Moreover, the LPS-induced vascular monolayer permeability in vitro was higher in MLMVECs treated with Dpp4 siRNA, suggesting that CD26/DPP4 plays a protective role in endothelial barrier function. In summary, this study demonstrated that genetic deficiency of Dpp4 attenuates inflammatory responses but not permeability in LPS-induced lung injury in mice, potentially through differential functional roles of CD26/DPP4 expression in resident cellular components of the lung. CD26/DPP4 may be a potential therapeutic target for ARDS and warrants further exploration to precisely identify the multiple functional effects of CD26/DPP4 in ARDS pathophysiology.NEW & NOTEWORTHY We aimed to clarify the functional roles of CD26/DPP4 in ARDS pathophysiology using Dpp4-deficient mice and siRNA reduction techniques in cultured lung cells. Our results suggest that CD26/DPP4 expression plays a proinflammatory role in alveolar macrophages while also playing a protective role in the endothelial barrier. Dpp4 genetic deficiency attenuates inflammatory responses but not permeability in LPS-induced lung injury in mice, potentially through differential roles of CD26/DPP4 expression in the resident cellular components of the lung.
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Affiliation(s)
- Shun Sato
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Synergy Institute for Futuristic Mucosal Vaccine Research and Development, Chiba University, Chiba, Japan
| | - Takeshi Kawasaki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Ryo Hatano
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Yu Koyanagi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yukiko Takahashi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kei Ohnuma
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Chikao Morimoto
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Steven M Dudek
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Koichiro Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takuji Suzuki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Synergy Institute for Futuristic Mucosal Vaccine Research and Development, Chiba University, Chiba, Japan
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Okaya T, Kawasaki T, Sato S, Koyanagi Y, Tatsumi K, Hatano R, Ohnuma K, Morimoto C, Kasuya Y, Hasegawa Y, Ohara O, Suzuki T. Functional Roles of CD26/DPP4 in Bleomycin-Induced Pulmonary Hypertension Associated with Interstitial Lung Disease. Int J Mol Sci 2024; 25:748. [PMID: 38255821 PMCID: PMC10815066 DOI: 10.3390/ijms25020748] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Pulmonary hypertension (PH) with interstitial lung diseases (ILDs) often causes intractable conditions. CD26/Dipeptidyl peptidase-4 (DPP4) is expressed in lung constituent cells and may be related to the pathogenesis of various respiratory diseases. We aimed to clarify the functional roles of CD26/DPP4 in PH-ILD, paying particular attention to vascular smooth muscle cells (SMCs). Dpp4 knockout (Dpp4KO) and wild type (WT) mice were administered bleomycin (BLM) intraperitoneally to establish a PH-ILD model. The BLM-induced increase in the right ventricular systolic pressure and the right ventricular hypertrophy observed in WT mice were attenuated in Dpp4KO mice. The BLM-induced vascular muscularization in small pulmonary vessels in Dpp4KO mice was milder than that in WT mice. The viability of TGFβ-stimulated human pulmonary artery SMCs (hPASMCs) was lowered due to the DPP4 knockdown with small interfering RNA. According to the results of the transcriptome analysis, upregulated genes in hPASMCs with TGFβ treatment were related to pulmonary vascular SMC proliferation via the Notch, PI3K-Akt, and NFκB signaling pathways. Additionally, DPP4 knockdown in hPASMCs inhibited the pathways upregulated by TGFβ treatment. These results suggest that genetic deficiency of Dpp4 protects against BLM-induced PH-ILD by alleviating vascular remodeling, potentially through the exertion of an antiproliferative effect via inhibition of the TGFβ-related pathways in PASMCs.
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Affiliation(s)
- Tadasu Okaya
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Takeshi Kawasaki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Shun Sato
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
- Synergy Institute for Futuristic Mucosal Vaccine Research and Development, Chiba University, Chiba 260-8670, Japan
| | - Yu Koyanagi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Koichiro Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Ryo Hatano
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Kei Ohnuma
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Chikao Morimoto
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Yoshitoshi Kasuya
- Department of Biomedical Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Yoshinori Hasegawa
- Department of Applied Genomics, Kazusa DNA Research Institute, Chiba 292-0818, Japan
| | - Osamu Ohara
- Department of Applied Genomics, Kazusa DNA Research Institute, Chiba 292-0818, Japan
| | - Takuji Suzuki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
- Synergy Institute for Futuristic Mucosal Vaccine Research and Development, Chiba University, Chiba 260-8670, Japan
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Farhana F, Sakai E, Koyanagi Y, Yamaguchi Y, Alam MI, Okamoto K, Tsukuba T. Abr, a Rho-regulating protein, modulates osteoclastogenesis by enhancing lamellipodia formation by interacting with poly(ADP-ribose) glycohydrolase. Mol Biol Rep 2023; 50:7557-7569. [PMID: 37507586 DOI: 10.1007/s11033-023-08690-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND Osteoclasts are multinucleated bone-resorbing cells formed by the fusion of monocyte/macrophage lineage. During osteoclast differentiation, Rho GTPases are involved in various processes, including cell migration, adhesion, and polarity. However, the role of Rho-regulatory molecules in the regulation of osteoclast differentiation remains unclear. In this study, among these genes, we focused on active breakpoint cluster region-related (Abr) protein that is a multifunctional regulator of Rho GTPases. METHODS AND RESULTS We examined using knockdown and overexpression experiments in RANKL-stimulated RAW-D macrophages whether Abr regulates osteoclast differentiation and cell morphology. We observed an increase in Abr expression during osteoclast differentiation and identified expression of a variant of the Abr gene in osteoclasts. Knockdown of Abr suppressed osteoclast differentiation and resorption. Abr knockdown markedly inhibited the expression of osteoclast markers, such as Nfatc1, c-fos, Src, and Ctsk in osteoclasts. Conversely, overexpression of Abr enhanced the formation of multinucleated osteoclasts, bone resorption activity, and osteoclast marker gene expression. Moreover, Abr overexpression accelerated lamellipodia formation and induced the formation of well-developed actin in osteoclasts. Importantly, the Abr protein interacted with poly(ADP-ribose) glycohydrolase (PARG) and Rho GTPases, including RhoA, Rac1/2/3, and Cdc42 in osteoclasts. CONCLUSIONS Taken together, these results indicate that Abr modulates osteoclastogenesis by enhancing lamellipodia formation via its interaction with PARG.
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Affiliation(s)
- Fatima Farhana
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Eiko Sakai
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Yu Koyanagi
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Yu Yamaguchi
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Mohammad Ibtehaz Alam
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kuniaki Okamoto
- Department of Dental Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Takayuki Tsukuba
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan.
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Girardi F, Matz M, Stiller C, You H, Marcos Gragera R, Valkov MY, Bulliard JL, De P, Morrison D, Wanner M, O'Brian DK, Saint-Jacques N, Coleman MP, Allemani C, Hamdi-Chérif M, Kara L, Meguenni K, Regagba D, Bayo S, Cheick Bougadari T, Manraj SS, Bendahhou K, Ladipo A, Ogunbiyi OJ, Somdyala NIM, Chaplin MA, Moreno F, Calabrano GH, Espinola SB, Carballo Quintero B, Fita R, Laspada WD, Ibañez SG, Lima CA, Da Costa AM, De Souza PCF, Chaves J, Laporte CA, Curado MP, de Oliveira JC, Veneziano CLA, Veneziano DB, Almeida ABM, Latorre MRDO, Rebelo MS, Santos MO, Azevedo e Silva G, Galaz JC, Aparicio Aravena M, Sanhueza Monsalve J, Herrmann DA, Vargas S, Herrera VM, Uribe CJ, Bravo LE, Garcia LS, Arias-Ortiz NE, Morantes D, Jurado DM, Yépez Chamorro MC, Delgado S, Ramirez M, Galán Alvarez YH, Torres P, Martínez-Reyes F, Jaramillo L, Quinto R, Castillo J, Mendoza M, Cueva P, Yépez JG, Bhakkan B, Deloumeaux J, Joachim C, Macni J, Carrillo R, Shalkow Klincovstein J, Rivera Gomez R, Perez P, Poquioma E, Tortolero-Luna G, Zavala D, Alonso R, Barrios E, Eckstrand A, Nikiforuk C, Woods RR, Noonan G, Turner D, Kumar E, Zhang B, Dowden JJ, Doyle GP, Saint-Jacques N, Walsh G, Anam A, De P, McClure CA, Vriends KA, Bertrand C, Ramanakumar AV, Davis L, Kozie S, Freeman T, George JT, Avila RM, O’Brien DK, Holt A, Almon L, Kwong S, Morris C, Rycroft R, Mueller L, Phillips CE, Brown H, Cromartie B, Ruterbusch J, Schwartz AG, Levin GM, Wohler B, Bayakly R, Ward KC, Gomez SL, McKinley M, Cress R, Davis J, Hernandez B, Johnson CJ, Morawski BM, Ruppert LP, Bentler S, Charlton ME, Huang B, Tucker TC, Deapen D, Liu L, Hsieh MC, Wu XC, Schwenn M, Stern K, Gershman ST, Knowlton RC, Alverson G, Weaver T, Desai J, Rogers DB, Jackson-Thompson J, Lemons D, Zimmerman HJ, Hood M, Roberts-Johnson J, Hammond W, Rees JR, Pawlish KS, Stroup A, Key C, Wiggins C, Kahn AR, Schymura MJ, Radhakrishnan S, Rao C, Giljahn LK, Slocumb RM, Dabbs C, Espinoza RE, Aird KG, Beran T, Rubertone JJ, Slack SJ, Oh J, Janes TA, Schwartz SM, Chiodini SC, Hurley DM, Whiteside MA, Rai S, Williams MA, Herget K, Sweeney C, Kachajian J, Keitheri Cheteri MB, Migliore Santiago P, Blankenship SE, Conaway JL, Borchers R, Malicki R, Espinoza J, Grandpre J, Weir HK, Wilson R, Edwards BK, Mariotto A, Rodriguez-Galindo C, Wang N, Yang L, Chen JS, Zhou Y, He YT, Song GH, Gu XP, Mei D, Mu HJ, Ge HM, Wu TH, Li YY, Zhao DL, Jin F, Zhang JH, Zhu FD, Junhua Q, Yang YL, Jiang CX, Biao W, Wang J, Li QL, Yi H, Zhou X, Dong J, Li W, Fu FX, Liu SZ, Chen JG, Zhu J, Li YH, Lu YQ, Fan M, Huang SQ, Guo GP, Zhaolai H, Wei K, Chen WQ, Wei W, Zeng H, Demetriou AV, Mang WK, Ngan KC, Kataki AC, Krishnatreya M, Jayalekshmi PA, Sebastian P, George PS, Mathew A, Nandakumar A, Malekzadeh R, Roshandel G, Keinan-Boker L, Silverman BG, Ito H, Koyanagi Y, Sato M, Tobori F, Nakata I, Teramoto N, Hattori M, Kaizaki Y, Moki F, Sugiyama H, Utada M, Nishimura M, Yoshida K, Kurosawa K, Nemoto Y, Narimatsu H, Sakaguchi M, Kanemura S, Naito M, Narisawa R, Miyashiro I, Nakata K, Mori D, Yoshitake M, Oki I, Fukushima N, Shibata A, Iwasa K, Ono C, Matsuda T, Nimri O, Jung KW, Won YJ, Alawadhi E, Elbasmi A, Ab Manan A, Adam F, Nansalmaa E, Tudev U, Ochir C, Al Khater AM, El Mistiri MM, Lim GH, Teo YY, Chiang CJ, Lee WC, Buasom R, Sangrajrang S, Suwanrungruang K, Vatanasapt P, Daoprasert K, Pongnikorn D, Leklob A, Sangkitipaiboon S, Geater SL, Sriplung H, Ceylan O, Kög I, Dirican O, Köse T, Gurbuz T, Karaşahin FE, Turhan D, Aktaş U, Halat Y, Eser S, Yakut CI, Altinisik M, Cavusoglu Y, Türkköylü A, Üçüncü N, Hackl M, Zborovskaya AA, Aleinikova OV, Henau K, Van Eycken L, Atanasov TY, Valerianova Z, Šekerija M, Dušek L, Zvolský M, Steinrud Mørch L, Storm H, Wessel Skovlund C, Innos K, Mägi M, Malila N, Seppä K, Jégu J, Velten M, Cornet E, Troussard X, Bouvier AM, Guizard AV, Bouvier V, Launoy G, Dabakuyo Yonli S, Poillot ML, Maynadié M, Mounier M, Vaconnet L, Woronoff AS, Daoulas M, Robaszkiewicz M, Clavel J, Poulalhon C, Desandes E, Lacour B, Baldi I, Amadeo B, Coureau G, Monnereau A, Orazio S, Audoin M, D’Almeida TC, Boyer S, Hammas K, Trétarre B, Colonna M, Delafosse P, Plouvier S, Cowppli-Bony A, Molinié F, Bara S, Ganry O, Lapôtre-Ledoux B, Daubisse-Marliac L, Bossard N, Uhry Z, Estève J, Stabenow R, Wilsdorf-Köhler H, Eberle A, Luttmann S, Löhden I, Nennecke AL, Kieschke J, Sirri E, Justenhoven C, Reinwald F, Holleczek B, Eisemann N, Katalinic A, Asquez RA, Kumar V, Petridou E, Ólafsdóttir EJ, Tryggvadóttir L, Murray DE, Walsh PM, Sundseth H, Harney M, Mazzoleni G, Vittadello F, Coviello E, Cuccaro F, Galasso R, Sampietro G, Giacomin A, Magoni M, Ardizzone A, D’Argenzio A, Di Prima AA, Ippolito A, Lavecchia AM, Sutera Sardo A, Gola G, Ballotari P, Giacomazzi E, Ferretti S, Dal Maso L, Serraino D, Celesia MV, Filiberti RA, Pannozzo F, Melcarne A, Quarta F, Andreano A, Russo AG, Carrozzi G, Cirilli C, Cavalieri d’Oro L, Rognoni M, Fusco M, Vitale MF, Usala M, Cusimano R, Mazzucco W, Michiara M, Sgargi P, Boschetti L, Marguati S, Chiaranda G, Seghini P, Maule MM, Merletti F, Spata E, Tumino R, Mancuso P, Cassetti T, Sassatelli R, Falcini F, Giorgetti S, Caiazzo AL, Cavallo R, Piras D, Bella F, Madeddu A, Fanetti AC, Maspero S, Carone S, Mincuzzi A, Candela G, Scuderi T, Gentilini MA, Rizzello R, Rosso S, Caldarella A, Intrieri T, Bianconi F, Contiero P, Tagliabue G, Rugge M, Zorzi M, Beggiato S, Brustolin A, Gatta G, De Angelis R, Vicentini M, Zanetti R, Stracci F, Maurina A, Oniščuka M, Mousavi M, Steponaviciene L, Vincerževskienė I, Azzopardi MJ, Calleja N, Siesling S, Visser O, Johannesen TB, Larønningen S, Trojanowski M, Macek P, Mierzwa T, Rachtan J, Rosińska A, Kępska K, Kościańska B, Barna K, Sulkowska U, Gebauer T, Łapińska JB, Wójcik-Tomaszewska J, Motnyk M, Patro A, Gos A, Sikorska K, Bielska-Lasota M, Didkowska JA, Wojciechowska U, Forjaz de Lacerda G, Rego RA, Carrito B, Pais A, Bento MJ, Rodrigues J, Lourenço A, Mayer-da-Silva A, Coza D, Todescu AI, Valkov MY, Gusenkova L, Lazarevich O, Prudnikova O, Vjushkov DM, Egorova A, Orlov A, Pikalova LV, Zhuikova LD, Adamcik J, Safaei Diba C, Zadnik V, Žagar T, De-La-Cruz M, Lopez-de-Munain A, Aleman A, Rojas D, Chillarón RJ, Navarro AIM, Marcos-Gragera R, Puigdemont M, Rodríguez-Barranco M, Sánchez Perez MJ, Franch Sureda P, Ramos Montserrat M, Chirlaque López MD, Sánchez Gil A, Ardanaz E, Guevara M, Cañete-Nieto A, Peris-Bonet R, Carulla M, Galceran J, Almela F, Sabater C, Khan S, Pettersson D, Dickman P, Staehelin K, Struchen B, Egger Hayoz C, Rapiti E, Schaffar R, Went P, Mousavi SM, Bulliard JL, Maspoli-Conconi M, Kuehni CE, Redmond SM, Bordoni A, Ortelli L, Chiolero A, Konzelmann I, Rohrmann S, Wanner M, Broggio J, Rashbass J, Stiller C, Fitzpatrick D, Gavin A, Morrison DS, Thomson CS, Greene G, Huws DW, Grayson M, Rawcliffe H, Allemani C, Coleman MP, Di Carlo V, Girardi F, Matz M, Minicozzi P, Sanz N, Ssenyonga N, James D, Stephens R, Chalker E, Smith M, Gugusheff J, You H, Qin Li S, Dugdale S, Moore J, Philpot S, Pfeiffer R, Thomas H, Silva Ragaini B, Venn AJ, Evans SM, Te Marvelde L, Savietto V, Trevithick R, Aitken J, Currow D, Fowler C, Lewis C. Global survival trends for brain tumors, by histology: analysis of individual records for 556,237 adults diagnosed in 59 countries during 2000-2014 (CONCORD-3). Neuro Oncol 2023; 25:580-592. [PMID: 36355361 PMCID: PMC10013649 DOI: 10.1093/neuonc/noac217] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 11/12/2022] Open
Abstract
BACKGROUND Survival is a key metric of the effectiveness of a health system in managing cancer. We set out to provide a comprehensive examination of worldwide variation and trends in survival from brain tumors in adults, by histology. METHODS We analyzed individual data for adults (15-99 years) diagnosed with a brain tumor (ICD-O-3 topography code C71) during 2000-2014, regardless of tumor behavior. Data underwent a 3-phase quality control as part of CONCORD-3. We estimated net survival for 11 histology groups, using the unbiased nonparametric Pohar Perme estimator. RESULTS The study included 556,237 adults. In 2010-2014, the global range in age-standardized 5-year net survival for the most common sub-types was broad: in the range 20%-38% for diffuse and anaplastic astrocytoma, from 4% to 17% for glioblastoma, and between 32% and 69% for oligodendroglioma. For patients with glioblastoma, the largest gains in survival occurred between 2000-2004 and 2005-2009. These improvements were more noticeable among adults diagnosed aged 40-70 years than among younger adults. CONCLUSIONS To the best of our knowledge, this study provides the largest account to date of global trends in population-based survival for brain tumors by histology in adults. We have highlighted remarkable gains in 5-year survival from glioblastoma since 2005, providing large-scale empirical evidence on the uptake of chemoradiation at population level. Worldwide, survival improvements have been extensive, but some countries still lag behind. Our findings may help clinicians involved in national and international tumor pathway boards to promote initiatives aimed at more extensive implementation of clinical guidelines.
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Affiliation(s)
- Fabio Girardi
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK.,Division of Medical Oncology 2, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Melissa Matz
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
| | - Charles Stiller
- National Cancer Registration and Analysis Service, Public Health England, London, UK
| | - Hui You
- Cancer Information Analysis Unit, Cancer Institute NSW, St Leonards, New South Wales, Australia
| | - Rafael Marcos Gragera
- Epidemiology Unit and Girona Cancer Registry, Catalan Institute of Oncology, Girona, Spain
| | - Mikhail Y Valkov
- Department of Radiology, Radiotherapy and Oncology, Northern State Medical University, Arkhangelsk, Russia
| | - Jean-Luc Bulliard
- Centre for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland.,Neuchâtel and Jura Tumour Registry, Neuchâtel, Switzerland
| | - Prithwish De
- Surveillance and Cancer Registry, and Research Office, Clinical Institutes and Quality Programs, Ontario Health, Toronto, Ontario, Canada
| | - David Morrison
- Scottish Cancer Registry, Public Health Scotland, Edinburgh, UK
| | - Miriam Wanner
- Cancer Registry Zürich, Zug, Schaffhausen and Schwyz, University Hospital Zürich, Zürich, Switzerland
| | - David K O'Brian
- Alaska Cancer Registry, Alaska Department of Health and Social Services, Anchorage, Alaska, USA
| | - Nathalie Saint-Jacques
- Department of Medicine and Community Health and Epidemiology, Centre for Clinical Research, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michel P Coleman
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK
| | - Claudia Allemani
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
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Koyanagi Y, Kawasaki T, Kasuya Y, Hatano R, Sato S, Takahashi Y, Ohnuma K, Morimoto C, Dudek SM, Tatsumi K, Suzuki T. Functional roles of CD26/DPP4 in bleomycin-induced pulmonary fibrosis. Physiol Rep 2023; 11:e15645. [PMID: 36949656 PMCID: PMC10034007 DOI: 10.14814/phy2.15645] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/22/2023] [Accepted: 02/28/2023] [Indexed: 03/24/2023] Open
Abstract
The pathogenesis of pulmonary fibrosis involves complex interplay between cell types and signaling pathways. Recurrent alveolar epithelial injury can occur during pulmonary inflammation, causing dysregulation of epithelial repair. Dysregulated repair interacts with mesenchymal, inflammatory, and endothelial cells to trigger fibroblast-to-myofibroblast activation. CD26/dipeptidyl peptidase-4 (DPP4) is a type II membrane protein mediating pleiotropic effect. However, the mechanistic role of CD26/DPP4 in pulmonary fibrosis remains unclear. In this study, we aimed to characterize Dpp4 deficiency in a mouse bleomycin (BLM)-induced pulmonary fibrosis model and in cell culture systems of human lung fibroblasts (HLFs). Dpp4 knockout (Dpp4 KO) mouse lungs exhibited lower Ashcroft scale indices, collagen content, and numbers of fibroblasts and myofibroblasts compared with those in C57BL/6 wild-type (WT) mice. Upregulation of Tgfb1 and Tgfb2 mRNA levels in the lungs after BLM treatment was lower in Dpp4 KO mice compared with those in WT mice. Although TGF-β-driven endothelial-to-mesenchymal transition (EndMT) has been implicated as one of the mechanisms of pulmonary fibrosis, a number of partial EndMT cells in lungs did not differ between Dpp4 KO mice and WT mice. The proliferation capacity and mRNA levels of COL1A1, a collagen deposition-related gene, in cultured HLFs were suppressed in DPP4 small interfering RNA-treated cells. This study indicates that the genetic deficiency of DPP4 has protective effects against BLM-induced pulmonary fibrosis, partly through the reduction in TGF-β expression and inhibition of fibroblast activation in the lung. Our study suggests that CD26/DPP4 inhibition is a potential therapeutic strategy for pulmonary fibrosis.
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Affiliation(s)
- Yu Koyanagi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takeshi Kawasaki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshitoshi Kasuya
- Department of Biomedical Science, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Ryo Hatano
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Shun Sato
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yukiko Takahashi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kei Ohnuma
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Chikao Morimoto
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Steven M Dudek
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Koichiro Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takuji Suzuki
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Synergy Institute for Futuristic Mucosal Vaccine Research and Development, Chiba University, Chiba, Japan
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Miyashita K, Kono M, Saito G, Koyanagi Y, Tsutsumi A, Kobayashi T, Miki Y, Hashimoto D, Nakamura Y, Suda T, Nakamura H. Prognosis after acute exacerbation in patients with interstitial lung disease other than idiopathic pulmonary fibrosis. Clin Respir J 2020; 15:336-344. [DOI: 10.1111/crj.13304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/21/2020] [Accepted: 11/08/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Koichi Miyashita
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
- Second Division Department of Internal Medicine Hamamatsu University School of Medicine Hamamatsu Japan
| | - Masato Kono
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Go Saito
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Yu Koyanagi
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Akari Tsutsumi
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Takeshi Kobayashi
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Yoshihiro Miki
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Dai Hashimoto
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
| | - Yutaro Nakamura
- Second Division Department of Internal Medicine Hamamatsu University School of Medicine Hamamatsu Japan
| | - Takafumi Suda
- Second Division Department of Internal Medicine Hamamatsu University School of Medicine Hamamatsu Japan
| | - Hidenori Nakamura
- Department of Pulmonary Medicine Seirei Hamamatsu General Hospital Hamamatsu Japan
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7
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Kono M, Nakamura Y, Enomoto N, Saito G, Koyanagi Y, Miyashita K, Tsutsumi A, Kobayashi T, Yasui H, Hozumi H, Karayama M, Suzuki Y, Furuhashi K, Miki Y, Hashimoto D, Fujisawa T, Inui N, Suda T, Nakamura H. Prognostic impact of an early marginal decline in forced vital capacity in idiopathic pulmonary fibrosis patients treated with pirfenidone. Respir Investig 2019; 57:552-560. [PMID: 31477470 DOI: 10.1016/j.resinv.2019.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/27/2019] [Accepted: 07/18/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Pirfenidone (PFD), an oral antifibrotic drug, is conditionally recommended for the treatment of idiopathic pulmonary fibrosis (IPF). This study aimed to investigate the prognostic factors in IPF patients treated with PFD and clarify the clinical significance of marginal physiological changes after PFD therapy. METHODS We retrospectively reviewed 96 consecutive IPF patients treated with PFD. The physiological evaluation was performed at 3-6 months after PFD therapy, and the findings were classified into three groups based on the presence of a 5% change in %forced vital capacity (%FVC): improved, stable, and worsened. The clinical characteristics and prognostic outcomes were compared among groups, and the prognostic factors were evaluated by Cox proportional hazards analysis. RESULTS Of the 96 patients, 25 (26.0%) showed acute exacerbation (AE) and 40 (41.6%) died during the observation period (median, 17 months). Physiological responses could be evaluated in 80 patients and the findings were as follows: improved, 23%; stable, 36%; and worsened, 41%. Time to the first AE and the survival rate were significantly shorter and lower, respectively, in the worsened group than in the improved/stable group (P = 0.002, P < 0.001, respectively). The prognostic analysis revealed that low %FVC at baseline (hazard ratio [HR]: 0.973 [0.950-0.996]), use of supplemental oxygen (HR: 2.180 [1.041-4.622]), and a "worsened" status after PFD therapy (HR: 5.253 [2.541-11.400]) were significantly associated with a poor prognosis. CONCLUSIONS An early marginal decline in FVC may be important for survival outcomes in PFD-treated IPF patients.
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Affiliation(s)
- Masato Kono
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Go Saito
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Yu Koyanagi
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Koichi Miyashita
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Akari Tsutsumi
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Takeshi Kobayashi
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Hideki Yasui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hironao Hozumi
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masato Karayama
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yuzo Suzuki
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuki Furuhashi
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshihiro Miki
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Dai Hashimoto
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hidenori Nakamura
- Seirei Hamamatsu General Hospital, Department of Pulmonary Medicine, Japan
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8
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Hemmings H, Koyanagi Y, Torturo C, Cook D, Zhou Z. Roles of presynaptic P/Q- and N-type calcium channels in inhibition of synaptic vesicle exocytosis by isoflurane in rat hippocampal neurones. Br J Anaesth 2019. [DOI: 10.1016/j.bja.2018.10.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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9
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Kono M, Nakamura Y, Oyama Y, Saito G, Koyanagi Y, Miyashita K, Tsutsumi A, Enomoto Y, Kobayashi T, Miki Y, Hashimoto D, Enomoto N, Colby TV, Suda T, Nakamura H. IgG4-related disease presenting with combined pulmonary fibrosis and emphysema (CPFE). Respir Med Case Rep 2018; 25:257-260. [PMID: 30302309 PMCID: PMC6175766 DOI: 10.1016/j.rmcr.2018.09.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 09/30/2018] [Indexed: 01/07/2023] Open
Abstract
A 64-year-old man was admitted to our hospital with an abnormal chest shadow. The patient was a current-smoker and had a past illness of autoimmune pancreatitis with a high serum level of IgG4, 348 mg/dL. Chest CT showed upper-lobe emphysema, and lower-lobe reticulation with honeycombing, suggestive of combined pulmonary fibrosis with emphysema (CPFE). Surgical lung biopsy was revealed a usual interstitial pneumonia pattern with marked infiltration of IgG4-positive plasma cells. The patient was diagnosed with IgG4 related disease (IgG4-RD) presenting with CPFE. Pulmonary manifestation was improved by corticosteroid therapy. IgG4-RD may be an underlying condition in patient with CPFE.
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Key Words
- AIP, autoimmune pancreatitis
- CPFE, Combined pulmonary fibrosis with emphysema
- CT, computed tomography
- CTD, connective tissue disease
- Combined pulmonary fibrosis and emphysema (CPFE)
- DIP, desquamative interstitial pneumonia
- DLco, diffusion capacity for carbon monoxide
- FEV1.0, forced vital capacity in 1 second
- FVC, forced vital capacity
- GGO, ground-glass opacities
- HE, hematoxylin-eosin
- HRCT, high-resolution CT
- IIP, idiopathic interstitial pneumonia
- IL, interleukin
- ILD, interstitial lung disease
- IPF, idiopathic pulmonary fibrosis
- IgG4-RD, IgG4-related disease
- IgG4-RLD, IgG4-related lung diseases
- IgG4-related disease (IgG4-RD)
- NSIP, nonspecific interstitial pneumonia
- PFT, pulmonary function tests
- RA, rheumatoid arthritis
- TGF, tissue growth factor
- UIP, usual interstitial pneumonia
- Usual interstitial pneumonia (UIP)
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Affiliation(s)
- Masato Kono
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
- Corresponding author. 2-12-12 Sumiyoshi, Nakaku, Hamamatsu, Shizuoka, 430-8558, Japan.
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Yoshiyuki Oyama
- Department of Respiratory Medicine, Sizuoka Saiseikai General Hospital, Japan
| | - Go Saito
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Yu Koyanagi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Koichi Miyashita
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Akari Tsutsumi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Yasunori Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Takeshi Kobayashi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Yoshihiro Miki
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Dai Hashimoto
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Thomas V. Colby
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Scottsdale, AZ, USA
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Hidenori Nakamura
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
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10
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Saito G, Kono M, Tsutsumi A, Koyanagi Y, Miyashita K, Kobayashi T, Hozumi H, Miki Y, Arai Y, Otsuki Y, Hashimoto D, Fujisawa T, Nakamura T, Suda T, Nakamura H. Anti-PL-7 Antisynthetase Syndrome with Eosinophilic Pleural Effusion. Intern Med 2018; 57. [PMID: 29526945 PMCID: PMC6120831 DOI: 10.2169/internalmedicine.0302-17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A 68-year-old woman was admitted to our hospital with fever and pleural effusion. Her thoracentesis showed eosinophilic pleural effusion (EPE) without any evidence of malignancy, infection, or trauma. Pleural biopsy revealed pleuritis and intercostal myositis. Characteristic skin manifestations, including Gottron's sign, interstitial lung disease, and pericardial effusion, appeared later in the clinical course. She was finally diagnosed with anti-PL-7 antisynthetase syndrome (ASS) based on the presence of anti-PL-7 antibody, and she fulfilled the diagnostic criteria for dermatomyositis. These clinical manifestations improved with immunosuppressive therapy. EPE might therefore be one of the characteristic features of anti-PL-7 ASS.
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Affiliation(s)
- Go Saito
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Masato Kono
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Akari Tsutsumi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Yu Koyanagi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Koichi Miyashita
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Takeshi Kobayashi
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Hironao Hozumi
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Yoshihiro Miki
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Yoshifumi Arai
- Department of Pathology, Seirei Hamamatsu General Hospital, Japan
| | - Yoshiro Otsuki
- Department of Pathology, Seirei Hamamatsu General Hospital, Japan
| | - Dai Hashimoto
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Toru Nakamura
- Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
| | - Hidenori Nakamura
- Department of Pulmonary Medicine, Seirei Hamamatsu General Hospital, Japan
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11
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Matsuo K, Koyanagi Y, Ito H. Development of a prediction model and estimation of cumulative risk for upper aerodigestive tract cancer based on aldehyde dehydrogenase 2 (ALDH2) genotype and alcohol consumption in a Japanese population. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61533-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Yamamoto K, Takei H, Koyanagi Y, Koshikawa N, Kobayashi M. Presynaptic cell type-dependent regulation of GABAergic synaptic transmission by nitric oxide in rat insular cortex. Neuroscience 2015; 284:65-77. [DOI: 10.1016/j.neuroscience.2014.09.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 09/13/2014] [Accepted: 09/28/2014] [Indexed: 11/26/2022]
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13
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Ono H, Yoshikawa H, Ueda T, Yamamura H, Kudawara I, Manou M, Ishiguro S, Funai H, Koyanagi Y, Araki N, Hashimoto N, Sonobe H, Tatsuta M, Takahashi K. Expression of smooth muscle calponin in synovial sarcoma. Sarcoma 2011; 3:107-13. [PMID: 18521272 PMCID: PMC2395415 DOI: 10.1080/13577149977730] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Purpose. Histogenesis of synovial sarcoma remains controversial and reliable molecular markers for diagnosis are necessary. Expression of basic calponin, a smooth muscle differentiation-specific actin-binding protein, was studied in synovial sarcoma.Subjects and Methods. The basic calponin gene and the gene product were analyzed by reverse transcription PCR analysis (RT-PCR) and immunohistochemistry in 14 synovial sarcomas and a human synovial sarcoma cell line (HS-SY-II).Results and Discussion. Immunoreactivity for basic calponin was detected in the cytoplasm of 6 synovial sarcomas (43% positive). In the basic calponin-positive tumors and the HS-SY-II cells, expression for smooth muscle-specific genes, including basic calponin and SM22alpha , was detected by RT-PCR, suggesting a lineage relationship between synovial sarcoma cells and smooth muscle-like mesenchymal cells.Conclusions. A subset of synovial sarcomas expressing the basic calponin gene and the gene product were identified. The basic calponin may have potential utility as a novel molecular marker identifying certain synovial sarcomas.
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Affiliation(s)
- H Ono
- Department of Orthopaedic Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases 1-3-3, Nakamichi Higashinari-ku Osaka 537-8511 Japan
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14
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Sunairi M, Tsuchiya H, Tsuchiya T, Omura Y, Koyanagi Y, Ozawa M, Iwabuchi N, Murooka H, Nakajima M. Isolation of a bacterium that causes anaaki disease of the red algaePorphyra yezoensis. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1995.tb00939.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Koyanagi Y, Sawada K, Sakata-Haga H, Jeong YG, Fukui Y. Increased Serotonergic Innervation of Lumbosacral Motoneurons of Rolling Mouse Nagoya in Correlation with Abnormal Hindlimb Extension. Anat Histol Embryol 2006; 35:387-92. [PMID: 17156092 DOI: 10.1111/j.1439-0264.2006.00697.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: 11/30/2022]
Abstract
Rolling Mouse Nagoya (RMN) carries a mutation in a gene encoding for alpha(1A) subunit of P/Q-type Ca(2+) channel (Ca(v)2.1). In addition to ataxia, this mutant mouse exhibits abnormal hindlimb extension, which is characterized by a sustained excessive tone of hindlimb extensor muscles. This study aimed to clarify whether serotonergic (5-HTergic) innervation of the spinal motoneurons was altered in RMN in relation to the abnormal hindlimb extension. The density of 5-HT immunoreactive fibres in the ventral horn of lumbar and sacral regions of spinal cord was significantly greater in RMN than in controls. Retrograde wheat germ agglutinin-conjugated horseradish peroxidase (WGA-HRP) labelling combined with 5-HT immunostaining revealed that the number of 5-HT immunoreactive terminals adjoining femoris quadriceps motoneurons was about 2.5-fold greater in RMN than in controls. Furthermore, 5-HT immunostaining in the lumbar cord ventral horn was examined in three other Ca(v)2.1 mutant mice (tottering, leaner and pogo) as to whether or not they showed the abnormal hindlimb extension. Among these mutants, the increased density of 5-HT immunoreactive fibres was observed in correlation with the presence of the abnormal hindlimb extension. The results suggest an increased 5-HTergic innervation of the lumbosacral motoneurons in correlation with the abnormal hindlimb extension in RMN and other Ca(v)2.1 mutant mice. As 5-HT is known to induce the sustained membrane depolarizations without continuous excitatory synaptic inputs (plateau potentials) in spinal motoneurons, the increased 5-HTergic innervation may cause the sustained excitation of hindlimb extensor motoneurons, resulting in the abnormal hindlimb extension.
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Affiliation(s)
- Y Koyanagi
- Department of Anatomy and Developmental Neurobiology, University of Tokushima Graduate School Institute of Health Biosciences, Tokushima 770-8503, Japan
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Baba S, Takahashi K, Nomura Y, Noguchi S, Koyanagi Y, Yamamoto N, Takaku H, Kawai G. Conformational change of dimerization initiation site of HIV-1 genomic RNA by NCp7 or heat treatment. Nucleic Acids Res Suppl 2003:155-6. [PMID: 12836311 DOI: 10.1093/nass/1.1.155] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Dimerization initiation site (DIS) of the human immunodeficiency virus type 1 (HIV-1) genome has been identified as a primary sequence that can form a stem-loop structure with a self-complementary sequence in the loop and a bulge in the stem. A DIS RNA fragment spontaneously forms a kissing dimer and is converted into an extended-duplex dimer by supplement of nucleocapsid protein NCp7. This two-step dimerization reaction can be also executed by a heat treatment instead of the binding proteins. However, it has not identified whether mechanisms of the conformational conversion by two different treatments are identical or not. In the present study, we used a series of DIS RNA oligonucleotides and the conformations of two extended-duplex dimers produced by the two different treatments were compared by the analysis of NMR spectra in the imino proton region. It was found that the effects of the two kinds of treatments are quite similar and the conformations of the two extended-duplex dimers are identical. These findings suggest that the conversion mechanisms DIS RNA by NCp7 and heat treatments are similar.
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Affiliation(s)
- S Baba
- Department of Industrial Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino-shi, Chiba, Japan
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17
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Ashizawa T, Aoki T, Yamazaki T, Katayanagi S, Shimizu H, Koyanagi Y. The clinical significance of sialyl Lewis antigen expression in the spread of gastric cancer. Flow cytometric DNA analysis. J Exp Clin Cancer Res 2003; 22:91-8. [PMID: 12725328] [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: 03/02/2023]
Abstract
We previously reported significant relationships between sialyl Lewis antigen expression on gastric cancer cells and both hepatic metastasis and clinical prognosis. The purpose of this study was to compare the expression of sialyl Lewis antigens on gastric cancer cells to elucidate the possible role of sialyl Lewis antigens in predicting the spread of a tumor with regard to histological findings. Subjects consisted of 38 patients with gastric cancer. For comparison we measured the values for sialyl Lewisa (sLea) and sialyl Lewisx (sLex) expression on the surface of about 10,000-30,000 cancer cells. Monoclonal antibodies CA19-9 and KM-93 were used to determine the frequency (%) and quantity (channel) of the expression by flow cytometry. We assessed the correlation of sLea and sLex expression with histological findings (depth of tumor invasion (pT), lymphatic invasion (ly), venous invasion (v), and lymph node metastasis (pN)), by comparing sLea and sLex expression in relation to the grade of histological findings. A significant relationship was found between lymphatic invasion and the frequency of sLea expression (r = 0.40, p<0.05). The mean values of sLea frequency in cases categorized as ly 2 (36.30) and ly 3 (31.81) were statistically higher than those in ly 1 cases (12.74) (p<0.05). A significant relationship was also observed between lymph node metastasis and the frequency of sLea expression (r = 0.46, p<0.01). The mean value of sLea frequency in pN 3 cases (44.14) was statistically higher than those in pN 0 (17.11) and pN 1 (19.03) cases (p<0.05). Neither the depth of tumor invasion nor venous invasion showed any correlation with the expression of sialyl Lewis antigens. In conclusion the frequency of sLea expression on the surface of gastric cancer cells was greater in those patients who developed lymphatic invasion and lymph node metastasis. However, the mechanism by which sialyl Lewisa expression is upregulated remains unclear.
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Affiliation(s)
- T Ashizawa
- Dept. of Surgery, Hachioji Medical Center, Tokyo Medical University, Tokyo, Japan.
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18
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Abstract
Alterations of cell cycle-regulated genes play an important role in the process of carcinogenesis, and some of them are thought to be prognostic factors in esophageal cancer. The expressions of p53, p16, pRB and Cyclin D1 proteins were evaluated immunohistochemically in 144 patients who underwent curative esophagectomy without any adjuvant therapy before surgery. p53 overexpression was observed in 99 (69%) out of the 144 patients. No significant correlation was noted between p53 and any other gene expression. p16 expression was observed in 12 (8.3%) out of all cases. A negative correlation was recognized between p16 and Cyclin D1 expression (P=0.0004). pRB expression was observed in 130 (90.3%) out of all cases, whereas pRB expression was not observed in 11 out of the 12 patients with p16-positive tumors. A negative correlation was also found between p16 and pRB (P < 0.0001). A positive correlation was noted between pRB and Cyclin D1 expression (P=0.0009). The cumulative survival rate of patients without pRB expression was significantly lower than that of patients with positive expression (P=0.003). In the multivariate survival analysis, pRB expression was an independent prognostic factor. In 98% of all patients with esophageal cancer, impairment of the G1 checkpoint is due to a loss of function by p16, pRB or Cyclin D1, which showed a negative correlation in each factor. In addition, aberrant expression of pRB is useful as a prognostic factor in esophageal cancer.
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Affiliation(s)
- M Shinohara
- Department of Surgery, Tokyo Medical University, Tokyo, Japan.
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19
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Ikeda T, Aoki T, Miyashita T, Kasuya K, Tsuchida A, Koyanagi Y, Matsumura T, Suzuki S, Enosawa S. Experimental study of plasma recycling system by off-line bioartificial liver in rats. Transplant Proc 2002; 34:2706-10. [PMID: 12431582 DOI: 10.1016/s0041-1345(02)03383-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- T Ikeda
- Department of Surgery, Tokyo Medical University, Japan
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20
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Endo M, Enosawa S, Suzuki S, Amemiya H, Kobayashi E, Miyashita T, Aoki T, Koyanagi Y. Porcine liver transplantation as an estimation system for bridge-use of bioartificial liver. Transplant Proc 2002; 34:2714-7. [PMID: 12431584 DOI: 10.1016/s0041-1345(02)03385-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Endo
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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21
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Affiliation(s)
- A Mimuro
- Department of Surgery, Tokyo Medical University, Tokyo, Japan.
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22
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Yasuda Y, Kasuya K, Nishihira J, Sasaki Y, Tsuchida A, Aoki T, Koyanagi Y. Induction of cell arrest by transfection of macrophage migration inhibitory factor antisense plasmid. Int J Mol Med 2002. [DOI: 10.3892/ijmm.10.4.463] [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: 11/06/2022] Open
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23
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Alfonzo M, Blanc D, Troadec C, Huerre M, Eliaszewicz M, Gónzalez G, Koyanagi Y, Scott-Algara D. Temporary restoration of immune response against Toxoplasma gondii in HIV-infected individuals after HAART, as studied in the hu-PBMC-SCID mouse model. Clin Exp Immunol 2002; 129:411-9. [PMID: 12197881 PMCID: PMC1906477 DOI: 10.1046/j.1365-2249.2002.01941.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We studied immune reconstitution against the parasite T. gondii in HIV-infected patients treated for 1 years with highly active antiretroviral therapy (HAART). We used SCID mice, humanized with peripheral blood mononuclear cells (PBMC) from patients, which were then infected with T. gondii cysts. Mice humanized with PBMC from patients before the start of HAART were highly susceptible to infection. In contrast, mice humanized with PBMC from patients who had received HAART for 6 months displayed higher survival rates, correlating with lower intracerebral parasite loads. However, this resistance was lost during follow up because mice humanized with PBMC from patients treated with HAART for 12 months survived for no longer than mice that had not been humanized. Specific lymphocyte proliferation assays showed that the increase in proliferative response depended on treatment duration and that HAART induced changes in IFN-gamma secretion in the presence of Toxoplasma antigens. Thus, our results indicate partial immune reconstitution against T. gondii in HIV-infected patients following HAART, possibly due to changes in the patterns of specific IFN-gamma production and redistribution of functional memory CD4+ cells.
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Affiliation(s)
- M Alfonzo
- Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur, Paris, France
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Ishiwata K, Koyanagi Y, Saitoh T, Taguchi K, Toda J, Sano T, Senda M. Effects of single and repeated administration of 1,2,3,4-tetrahydroisoquinoline analogs on the binding of [11C]raclopride to dopamine D2 receptors in the mouse brain. J Neural Transm (Vienna) 2002; 108:1111-25. [PMID: 11725814 DOI: 10.1007/s007020170001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We investigated the effects of intraperitoneal injection of 1,2,3,4-tetrahydroisoquinoline (TIQ) analogs and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on the binding of [11C]raclopride to striatal dopamine D2 receptors in mice. The binding of [11C]raclopride, but not of [11C]N-methylspiperone or [11C]nemonapride with higher affinity, to the receptors was significantly decreased immediately after TIQ injection. Neither a dopamine transporter blocker induced such effect nor TIQ affected the dopamine transporter-radioligand binding. Among the compounds investigated, including parkinsonism-inducing TIQ and (R/S)-1-benzyl-TIQ, parkinsonism-preventing (R)- and (S)-1-methyl-TIQ, and probable N-methylated metabolites of TIQ and 1-methyl-TIQ, TIQ and (S)-1-methyl-TIQ had the strongest effect on the binding of [11C]raclopride, and N-methylated derivatives showed less of an effect than the respective parent compounds. The decrease in the binding of [11C]raclopride continued for 7 hours and was followed by an increase until 10 days after the single and subchronic administration of TIQ. These findings suggest that TIQ analogs profoundly stimulated dopamine release which resulted in the competitive inhibition of the binding of [11C]raclopride to dopamine D2 receptors, but did not induce degeneration of the receptors.
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Affiliation(s)
- K Ishiwata
- Positron Medical Center, Tokyo Metropolitan Institute of Gerontology, Itabashi, Japan.
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25
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Aoki T, Osaka Y, Takagi Y, Okada R, Shinohara M, Tsuchida A, Sato S, Koyanagi Y. Comparative study of self-expandable metallic stent and bypass surgery for inoperable esophageal cancer. Dis Esophagus 2002; 14:208-11. [PMID: 11869321 DOI: 10.1046/j.1442-2050.2001.00186.x] [Citation(s) in RCA: 31] [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: 12/11/2022]
Abstract
We evaluated the effect of two different therapies for 23 patients with inoperable esophageal cancer, of whom 13 patients underwent placement of a metallic stent and 10 received bypass surgery. We newly defined the improved level of food intake and the effective rate based on the grade of the patient's status in order to evaluate objectively. Although the effect of stent placement was significantly better than that of bypass surgery, there were no significant differences in the improved level of food intake and the effective rate between the two groups. Four out of 10 patients in the bypass group had suture insufficiency, resulting in no oral intake and a fatal outcome. In addition, the ratio of survival period of ability to ingest orally and in-hospital mortality was significantly favorable in the stent group compared with the bypass group. In conclusion, stent placement should be the first choice for inoperable malignant stenosis or esophageal fistula.
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Affiliation(s)
- T Aoki
- Department of Surgery, Tokyo Medical University, Tokyo Japan
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26
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Matsunaga T, Ohta D, Misaka T, Hosokawa K, Fujii M, Kaise H, Kusama M, Koyanagi Y. Mammary ductoscopy for diagnosis and treatment of intraductal lesions of the breast. Breast Cancer 2002; 8:213-21. [PMID: 11668243 DOI: 10.1007/bf02967511] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Mammary ductoscopy (mammoscopy) is an ideal diagnostic method for intraductal lesions. The usefulness of mammoscopy for intraductal lesions was evaluated. METHODS Mammoscopy was performed in 315 cases with nipple discharge. The mammoscopic findings of 46 breast cancer cases (47 lesions) and 109 intraductal papilloma cases (119 lesions) were compared with pathological findings. RESULTS Carcinoma was recognized by mammoscopy in 38 of 47 lesions (80.9%). Intraductal masses were detected by mammoscopy in 115 of 119 intraductal papilloma lesions. The shape of the mass was classified as hemispheric, papillary, or flat protrusion. The hemispheric and papillary shapes were most common in cases of intraductal papilloma and the flat protrusion type was most common in cases of carcinoma. The amount of material collected by intraductal biopsy under mammoscopic observation was smaller in carcinoma than in intraductal papilloma because the carcinoma lesions were usually located in peripheral duct-lobular units and had weak tissue cohesion compared with that of intraductal papilloma. Of 133 intraductal biopsies performed for 69 intraductal papillomas, 17 biopsies yielded material insufficient for diagnosis in. The effectiveness of treatment by intraductal biopsy was recognized in 38 of 46 intraductal papillomas in which clinical follow-up continued for more than two years (82.6%). The therapeutic results of biopsy were poor in cases of multiple intraductal masses in multiple duct-lobular units. CONCLUSIONS Mammoscopy contributes not only the diagnosis in cases of nipple discharge, but is also of benefit in the treatment of intraductal papilloma.
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Affiliation(s)
- T Matsunaga
- Department of Breast Cancer Research, Tokyo Metropolitan Cancer Detection Center, 2-5 Kanda Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
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Aoki T, Tsuchida A, Kasuya K, Inoue K, Saito H, Koyanagi Y. Is frozen section effective for diagnosis of unsuspected gallbladder cancer during laparoscopic cholecystectomy? Surg Endosc 2002; 16:197-200. [PMID: 11961639 DOI: 10.1007/s004640080207] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2001] [Accepted: 06/18/2001] [Indexed: 12/12/2022]
Abstract
BACKGROUND Although frozen section is recommended to prevent tumor dissemination following laparoscopic cholecystectomy (LC) for unsuspected gallbladder cancer, there are no reports concretely demonstrating its effectiveness and outcome. METHODS Frozen section during LC was performed in 990 patients with gallstones. The sensitivity, specificity of frozen section, and false-negative cases were evaluated in comparison with postoperative entire cross sections. RESULTS In frozen section, 983 cases were diagnosed as benign and 7 cases as malignant. Of the benign cases, cancer was discovered in 4 patients postoperatively in which frozen section was diagnosed as regenerative epithelial severe atypia. Sensitivity was 64% and specificity was 100%. Concerning the results of frozen section by p-TNM classification, cancer was diagnosed in 40% of Tis lesions, whereas it was found in 83% of T2 or T3 lesions. CONCLUSION Frozen section is effective in cases with T2 or greater lesions for which conversion to radical surgery should be required.
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Affiliation(s)
- T Aoki
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo 160-0023, Japan.
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28
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Moritani M, Fujimitsu Y, Shinohara M, Niido T, Tsuchida A, Aoki T, Koyanagi Y. [A case of AFP producing early gastric cancer successfully treated with small dose CDDP and 5-FU (PF) therapy]. Gan To Kagaku Ryoho 2001; 28:2079-82. [PMID: 11791389] [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: 02/23/2023]
Abstract
A case of AFP producing early gastric cancer successfully treated with a small dose of CDDP and 5-FU therapy administered intermittedly is reported with a review of the literature. A 63-year-old male was admitted to our hospital because of liver metastasis with a high level of serum AFP (185.8 ng/ml) three months after gastrectomy. Systemic chemotherapy was performed twice with a regimen of CDDP 20 mg and 5-FU 750 mg/day in 5 days. After hepatic arterial infusion chemotherapy (HAIC) was performed once, the patient obtained partial response according to CT scan and was discharged. After he underwent HAIC once as an outpatient, liver metastasis completely disappeared 5 months after surgery. He was administered oral 5-FU, 150 mg and Krestin 3.0 g/day and underwent HAIC with CDDP 20 mg and 5-FU 750 mg/day every 2 weeks. After serum AFP level was returned to the normal range 7 months after surgery; HAIC was performed every 4 weeks and continued until one year after surgery. One year and 11 months after surgery, serum AFP remains within the normal limit and there is no evidence of recurrence.
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Affiliation(s)
- M Moritani
- Dept. of Gastroenterology, Nishi-Tokyo Central General Hospital
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Ishikawa K, Janssens W, Banor JS, Shinno T, Piedade J, Sata T, Ampofo WK, Brandful JA, Koyanagi Y, Yamamoto N, Canas-Ferreira WF, Adu-Sarkodie Y, Kurata T. Genetic analysis of HIV type 2 from Ghana and Guinea-Bissau, West Africa. AIDS Res Hum Retroviruses 2001; 17:1661-3. [PMID: 11779354 DOI: 10.1089/088922201753342077] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The phylogenetic variability of part of the long terminal repeat (LTR) region of HIV-2 strains isolated in 1995 from five individuals residing in Bissau, the capital city of Guinea-Bissau, and collected from seven persons from Kumasi, Ghana in 1996-1997, was analyzed. All Guinean samples and all but one Ghanaian sample clustered with HIV-2 subtype A. One Ghanaian sample (14%) was classified as HIV-2 subtype B. This study adds to previous reports on HIV-2 subtype distribution in West Africa indicating local prevalence of HIV-2 subtype B in Ivory Coast and neighboring Ghana.
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Affiliation(s)
- K Ishikawa
- AIDS Research Center, National Institute of Infectious Diseases, 1-23-1 Toyama Shinjuku, Tokyo 162-8640, Japan.
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30
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Ishiwata K, Koyanagi Y, Abe K, Kawamura K, Taguchi K, Saitoh T, Toda J, Senda M, Sano T. Evaluation of neurotoxicity of TIQ and MPTP and of parkinsonism-preventing effect of 1-MeTIQ by in vivo measurement of pre-synaptic dopamine transporters and post-synaptic dopamine D(2) receptors in the mouse striatum. J Neurochem 2001; 79:868-76. [PMID: 11723179 DOI: 10.1046/j.1471-4159.2001.00619.x] [Citation(s) in RCA: 27] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Parkinsonism-inducing neurotoxicity of 1,2,3,4-tetrahydroisoquinoline (TIQ), as contrasted to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), and parkinsonism-preventing effect of 1-methyl-1,2,3,4-tetrahydroisoquinoline (1-MeTIQ) have been investigated in mice by measuring their effects on the in vivo binding of radioligand to pre-synaptic dopamine transporters (DATs) or to dopamine D(2) receptors (D2R) in the striatum. A significant reduction of the ligand-DATs binding was found in the mice treated with MPTP, but not with TIQ, under the dosage inducing behavioral abnormality and loss of tyrosine hydroxylase-positive cells in the substantia nigra. A slight decrease in the ligand-DATs binding was observed in the mice given a larger dose of TIQ. Compensatory up-regulation in the post-synaptic D2Rs was found in the MPTP-treated mice. Pre-treatment with (S)-enantiomer, but not (R)-enantiomer, of 1-MeTIQ prevented the degeneration of DATs to some extent. We concluded that the TIQ-induced parkinsonism model is different from the MPTP-induced model as evaluated by the radioligand-DATs binding and that (S)-1-MeTIQ has a preventing effect for the degeneration of the DATs to a certain extent.
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Affiliation(s)
- K Ishiwata
- Positron Medical Center, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
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Takagi Y, Aoki T, Osaka Y, Kuroda N, Moritani M, Takagi M, Tamura K, Okada R, Sato S, Koyanagi Y. Comparison of plastic prostheses and self-expandable metallic stents in the treatment of malignant esophageal stenosis. Jpn J Thorac Cardiovasc Surg 2001; 49:641-5. [PMID: 11757334 DOI: 10.1007/bf02912471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE We compared the efficacy of plastic prostheses and self-expandable metallic stents in the treatment of malignant esophageal stenosis and/or fistula. SUBJECTS AND METHODS Subjects were 31 patients with esophageal cancer, 4 with esophagotracheal fistula, and 1 with esophageal stenosis. A plastic prosthesis was inserted in 15 patients (group A) and a self-expandable metallic stent in 21 patients (group B). We evaluated food ingestion improvement, effectiveness, complications, mean survival, food ingestion duration, the percentage of food ingestion capability in total survival time, and inhospital mortality. RESULTS No differences were seen in food intake improvement or in the effectiveness between groups, whereas fatal complications were higher in Group A. No significant differences were seen in mean survival, food ingestion duration, percentage of food ingestion capability, or inhospital mortality between groups. CONCLUSION We concluded that a self-expandable metallic stent was safer than a plastic prosthesis because of fewer serious complications such as bleeding, and recommended the use of metallic stents in the treatment of malignant esophageal stenosis and/or fistula.
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Affiliation(s)
- Y Takagi
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
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Aoki T, Inoue K, Tsuchida A, Kasuya K, Koyanagi Y. Dye-staining stereomicroscopic examinations for fine mucosal structures of the gallbladder. Dig Surg 2001; 18:298-304. [PMID: 11528140 DOI: 10.1159/000050156] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND In order to diagnose an unsuspected gallbladder carcinoma and to examine whether a differential diagnosis could be made between cancer and noncancerous lesions during surgery, we evaluated the findings of fine structures of various types of gallbladder mucosa. METHODS We used stereomicroscopy with a dye-contrast technique under water and measured the maximum blood vessel diameters of the gallbladder mucosa: normal gallbladder, chronic cholecystitis, and carcinoma. RESULTS All normal gallbladders showed fine-reticular-type findings. In chronic cholecystitis, 5.8% of the specimens (n = 69) had fine reticular type, 87.0% had rough reticular type, and 7.2% had atrophic type. All the cases of adenomyomatosis (n = 16) showed rough reticular type. In eight specimens of pancreaticobiliary maljunction, 75% of them showed high reticular type, and the other 25% showed papillary type. The two adenoma specimens showed fine granular type. In five gallbladder carcinomas, the lattice-like pattern completely disappeared and showed rough granular type. The average of maximum vessel diameters in the gallbladder mucosa were 41.0 microm in normal gallbladders, 99.1 microm in patients with chronic cholecystitis, and 614.8 microm in patients with a carcinoma. There were significant differences among them (p < 0.05). CONCLUSION This study showed that differential diagnosis between cancer and noncancerous lesion is possible by dye-staining mucosal pattern and measurement of maximum vessel diameters by stereoscopic examination.
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Affiliation(s)
- T Aoki
- Department of Surgery, Tokyo Medical University, Tokyo, Japan
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Abstract
PURPOSE To examine surgical effects and complications of improved nonpenetrating trabeculectomy with trabeculotomy in glaucoma patients. METHODS Glaucoma patients in two medical institutions underwent nonpenetrating trabeculectomy with sinusotomy with or without trabeculotomy, and the results were compared retrospectively in the two groups by evaluation of final intraocular pressure, drug score, and occurrence of postsurgical complications. RESULTS Of the 63 eyes of 51 patients in this study, 31 were treated with nonpenetrating trabeculectomy with sinusotomy without trabeculotomy and 32 eyes were treated with nonpenetrating trabeculectomy with sinusotomy and trabeculotomy. The mean follow-up period was 17.0 months. The clinical features in both groups were similar in terms of age, presurgical intraocular pressure (P = 0.96), and presurgical drug score. The eyes treated with nonpenetrating trabeculectomy with sinusotomy without trabeculotomy had significantly reduced intraocular pressures from 21.0 +/- 4.3 (mean +/- SD) to 15.8 +/- 6.3 mm Hg (P = 0.0003) and drug scores from 2.4 +/- 1.2 to 1.6 +/- 1.1 without postsurgical complications. The eyes treated with nonpenetrating trabeculectomy with sinusotomy and trabeculotomy had significantly reduced intraocular pressures from 22.3 +/- 7.5 to 12.5 +/- 2.3 mm Hg (P < 0.0001) and drug scores from 2.5 +/- 1.9 to 0.9 +/- 1.3 without postsurgical complications. Thus, the eyes treated with nonpenetrating trabeculectomy with sinusotomy and trabeculotomy had significantly lower intraocular pressures (P = 0.016) and drug scores than did those treated with nonpenetrating trabeculectomy with sinusotomy without trabeculotomy. CONCLUSION The authors obtained satisfactory results in reducing intraocular pressure by the combination of nonpenetrating trabeculectomy, sinusotomy, and trabeculotomy.
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Affiliation(s)
- T Ogawa
- Department of Ophthalmology, Nagasaki Municipal Hospital, Japan
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Hakoda Y, Gotoh A, Kuriyama Y, Kusama M, Koyanagi Y, Serizawa H, Mukai K, Ohyashiki K. Breast MALT lymphoma: potential relationship between hormonal environment and female sex hormone receptor expression in lymphoma cells. Leuk Lymphoma 2001; 42:1157-9. [PMID: 11697637 DOI: 10.3109/10428190109097740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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35
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Takahashi K, Baba S, Koyanagi Y, Yamamoto N, Takaku H, Kawai G. Two basic regions of NCp7 are sufficient for conformational conversion of HIV-1 dimerization initiation site from kissing-loop dimer to extended-duplex dimer. J Biol Chem 2001; 276:31274-8. [PMID: 11418609 DOI: 10.1074/jbc.m104577200] [Citation(s) in RCA: 28] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nucleocapsid (NC) protein possesses nucleotide-annealing activities, which are used in various processes in retroviral life cycle. As conserved characters, the NC proteins have one or two zinc fingers of CX(2)CX(4)HX(4)C motif surrounded by basic amino acid sequences. Requirement of the zinc fingers for the annealing activities of NC protein remains controversial. In this study, we focused the requirement in the process of maturation of dimeric viral RNA. Discrimination between immature and mature dimers of synthetic RNA corresponding to the dimerization initiation site of human immunodeficiency virus type 1 (HIV-1) genomic RNA was performed based on their Mg(2+)-dependent stability in gel electrophoreses and on their distinct signal pattern from NMR analysis of imino protons. Chaperoning activity of the HIV-1 NC protein, NCp7, and its fragments for maturation of dimeric RNA was investigated using these experimental systems. We found that the two basic regions flanking the N-terminal zinc finger of NCp7, which are connected by two glycine residues instead of the zinc finger, were sufficient, although about 10 times the amounts of peptide were needed in comparison with intact NCp7. Further, it was found that the amount of basic residues rather than the amino acid sequence itself is important for the activity. The zinc fingers may involve the binding affinity and/or such a possible specific binding of NCp7 to dimerization initiation site dimer that leads to the maturation reaction.
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Affiliation(s)
- K Takahashi
- Department of Industrial Chemistry, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino-shi, Chiba 275-8588, Japan
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36
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Takahashi Y, Tanaka Y, Yamashita A, Koyanagi Y, Nakamura M, Yamamoto N. OX40 stimulation by gp34/OX40 ligand enhances productive human immunodeficiency virus type 1 infection. J Virol 2001; 75:6748-57. [PMID: 11435553 PMCID: PMC114401 DOI: 10.1128/jvi.75.15.6748-6757.2001] [Citation(s) in RCA: 27] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2000] [Accepted: 04/20/2001] [Indexed: 12/11/2022] Open
Abstract
OX40 is a member of the tumor necrosis factor (TNF) receptor superfamily and known to be an important costimulatory molecule expressed on activated T cells. To investigate the role of costimulation of OX40 in human immunodeficiency virus type 1 (HIV-1) infection by its natural ligand, gp34, the OX40-transfected ACH-2 cell line, ACH-2/OX40, chronically infected with HIV-1, was cocultured with paraformaldehyde (PFA)-fixed gp34-transfected mouse cell line, SV-T2/gp34. The results showed that HIV-1 production was strongly induced. This was followed by apparent apoptosis, and both processes were specifically inhibited by the gp34-specific neutralizing monoclonal antibody 5A8. Endogenous TNF alpha (TNF-alpha) and TNF-beta production were not involved in the enhanced HIV-1 production. Furthermore, enhanced HIV-1 transcription in gp34-stimulated ACH-2/OX40 cells was dependent on the kappa B site of the HIV-1 long terminal repeat, and the OX40-gp34 interaction activated NF-kappa B consisting of p50 and p65 subunits. When primary activated CD4(+) T cells acutely infected with HIV-1(NL4-3) (CXCR4-using T-cell-line-tropic) were cocultured with PFA-fixed gp34(+) human T-cell leukemia virus type 1-bearing MT-2 cells or SV-T2/gp34 cells, HIV-1 production was also markedly enhanced. The enhancement was again significantly inhibited by 5A8. The present study first shows that OX40-gp34 interaction stimulates HIV-1 expression and suggests that OX40 triggering by gp34 may play an important role in enhancing HIV-1 production in both acutely and latently infected CD4(+) T cells in vivo.
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Affiliation(s)
- Y Takahashi
- Department of Microbiology, School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
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37
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Yoshimura M, Shiroiwa H, Umeda J, Jinbu A, Koizumi K, Takagi Y, Koyanagi Y, Abe K. [Experience of gamma-detecting probe for the survey of sentinel node in gastroesophageal malignancies]. Kaku Igaku 2001; 38:351-4. [PMID: 11530382] [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: 02/21/2023]
Abstract
Gamma-detecting probe NAVIGATOR GPS (Autosuture Japan) was evaluated by using of 99mTc. Linearlity of counting in radioactivity was fairly good, but the sensitivity of the prove is so low, that sentinel node (SN) should contain the 3.7 x 10(-3) MBq (0.1 microCi) of 99mTc or more for the most effective use of it. And the count rate of the gamma-detecting probe was influenced by the distance and angle from the 99mTc source variously. It is important for the operator to know such characteristics of the gamma-detecting probe in order to obtain the correct SN judging.
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Affiliation(s)
- M Yoshimura
- Department of Radiology, Tokyo Medical University
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38
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Tadatomo H, Suzuki K, Ando M, Yamashita S, Tanaka K, Maruyama S, Harada Y, Ohnuma S, Sakaniwa N, Koyanagi Y. [A case of advanced gastric cancer treated with neoadjuvant chemotherapy of low-dose CPT-11 + CDDP]. Gan To Kagaku Ryoho 2001; 28:821-4. [PMID: 11432351] [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: 02/20/2023]
Abstract
Side effects due to administration of anti-cancer drugs often cause the treatment to be abandoned or a decrease in the amount of anti-cancer drugs. Recently, the anti-tumor effects of "low-dose CPT-11", which can be administered at the outpatient clinic, are reported. We performed "low-dose CPT-11 + CDDP" as a neoadjuvant chemotherapy to a patient with advanced gastric cancer. CPT-11 and CDDP combination chemotherapy caused very few side effects, so we could continue the treatment and achieve anti-tumor effects. Consequently, surgery could be performed, but disseminated metastasis was found so that the surgery ended as a non-curative operation. However, it was considered that this method of "low-dose CPT-11 + CDDP" was very effective as the neoadjuvant chemotherapy in a patient with advanced gastric cancer.
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Affiliation(s)
- H Tadatomo
- Dept. of Surgery, Tokyo Metropolitan Toshima Hospital
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39
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Kusagawa S, Takebe Y, Yang R, Motomura K, Ampofo W, Brandful J, Koyanagi Y, Yamamoto N, Sata T, Ishikawa K, Nagai Y, Tatsumi M. Isolation and characterization of a full-length molecular DNA clone of Ghanaian HIV type 1 intersubtype A/G recombinant CRF02_AG, which is replication competent in a restricted host range. AIDS Res Hum Retroviruses 2001; 17:649-55. [PMID: 11375062 DOI: 10.1089/088922201300119761] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We have isolated a replication-competent, full-length molecular clone of HIV-1 CRF02_AG, designated p97GH-AG1, by reconstituting two separately amplified genomic regions of an HIV-1 provirus of a 1997 Ghanaian isolate. The phylogenetic and recombination breakpoint analyses revealed that 97GH-AG1 had an A/G recombinant structure similar to that of prototype Nigerian isolate IbNG. The 17-nucleotide insertion downstream of the primer-binding site appeared to be a common sequence signature specific to most CRF02_AG strains, including 97GH-AG1. 97GH-AG1 showed an R5 phenotype and exerted productive infection in both HOS and NP2 cell infectivity assays, whereas it failed to show a detectable level of progeny production in peripheral blood mononuclear cells (PBMCs). The data may suggest the presence of unknown determinant(s) that dictate efficient replication in PBMCs, but that are not required for replication in immortalized cell lines.
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Affiliation(s)
- S Kusagawa
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
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40
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Endoh A, Asanuma K, Moriai R, Yamada M, Koyanagi Y, Sato T, Yagihasi A, Nakamura M, Kobayashi D, Watanabe N. Expression of survivin mRNA in CD34-positive cells. Clin Chim Acta 2001; 306:149-51. [PMID: 11370627 DOI: 10.1016/s0009-8981(01)00416-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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41
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Aoki T, Tsuchida A, Kasuya K, Endo M, Kitamura K, Koyanagi Y. Is preventive resection of the extrahepatic bile duct necessary in cases of pancreaticobiliary maljunction without dilatation of the bile duct? Jpn J Clin Oncol 2001; 31:107-11. [PMID: 11336321 DOI: 10.1093/jjco/hye020] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND No consensus has been reached on whether preventive resection of the extrahepatic bile duct is necessary in cases of pancreaticobiliary maljunction (PBM) without dilatation of the extrahepatic bile duct (undilated type). METHODS Sixty-eight patients with PBM underwent corrective surgery and several clinical characteristics and pathological findings including K-ras point mutation were evaluated. RESULTS Unlike dilated bile duct, none of the patients with undilated type duct had clinical symptoms in early childhood. In patients with either cystic or spindle type duct, amylase levels in the bile duct were >10(4) U/l, whereas those in patients with undilated type duct were <10(4) U/l. Postoperative scintigraphy of the biliary system of undilated type revealed no evidence of cholestasis. After surgery, eight patients with undilated type duct, in whom the bile duct had been preserved, had no further clinical symptoms and no evidence of malignancy. Bile duct tissue specimens revealed no hyperplasia, dysplasia or cancerous lesions and they had no K-ras mutation in undilated type. CONCLUSION The results showed that there was little bile stasis, injury to the mucosa was mild and less genetic changes could be seen in patients with undilated type duct. Therefore, in patients without dilatation of bile duct and advanced cancer, cholecystectomy alone is sufficient.
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Affiliation(s)
- T Aoki
- Department of Surgery, Tokyo Medical University, Japan
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42
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Katsumata K, Yamamoto K, Ashizawa T, Sumi T, Murohashi T, Katayanagi S, Kusama M, Koyanagi Y. [Recurrent breast cancer successfully treated with a weekly dose of paclitaxel--a case report]. Gan To Kagaku Ryoho 2001; 28:75-8. [PMID: 11201384] [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
The patient was a 46-year-old women who was treated for axillary lymph node recurrence of breast cancer by a variety of methods, including surgery, chemotherapy, and radiotherapy, but who experienced recurrences in the cervical and mediastinal lymph nodes and skin, and developed hydrothorax and ascites. Although the recurrent foci responded to 4 cycles of CAF chemotherapy, there was concern that the foci would become refractory or resistant to chemotherapy. The administration of paclitaxel was therefore initiated. The patient received a dose of paclitaxel once a week for 5 consecutive weeks followed by a 1-week recovery period (one cycle). After two cycles of the paclitaxel treatment, a marked shrinkage of the lymph nodes and complete resolution of the hydrothorax and ascites were observed. Even though the patient exhibited bone marrow suppression and G-CSF was administered twice for neutropenia, there were no adverse effects except mild alopecia, again suggesting the possibility that paclitaxel is effective chemotherapy for recurrent breast cancer.
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Affiliation(s)
- K Katsumata
- Dept. of Surgery, Hachioji Medical Center of Tokyo Medical College
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43
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Katsumata K, Sumi T, Yamashita S, Takahashi S, Mori M, Baba T, Murohashi T, Nagashima K, Ashizawa T, Yamamoto K, Koyanagi Y, Katoh K. The significance of thymidine phosphorylase expression in colorectal cancer. Oncol Rep 2001; 8:127-30. [PMID: 11115583 DOI: 10.3892/or.8.1.127] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We measured thymidine phosphorylase activity in colorectal cancer tissue and conducted immunostaining to investigate enzyme expression in the tumor tissue. The results showed a correlation between staining ratio of thymidine phosphorylase and cancer progression as well as a correlation between enzyme activity and staining ratios of cancer cells and stromal cells. Since enzyme activity levels can be judged by staining ratios, this method may be useful for assessing cancer malignancy.
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Affiliation(s)
- K Katsumata
- Department of Gastroenterology, Hatiouji Medical Center, Tokyo Medical University, Hatiouji-shi, Tokyo 193-0998, Japan.
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44
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Endoh A, Yagihashi A, Asanuma K, Moriai R, Izawa A, Koyanagi Y, Sato T, Kobayashi D, Watanabe N. Hematopoietic progenitor cell counts performed by the Sysmex SE-9000 analyzer can guide timing of peripheral blood stem cell harvest. Anticancer Res 2001; 21:601-4. [PMID: 11299812] [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
BACKGROUND We studied whether the hematopoietic progenitor cell (HPC) count in peripheral blood as evaluated by an automated counter, the Sysmex SE-9000, correlated with CD34 positive (+) cell count and therefore could guide the timing of peripheral blood stem cell (PBSC) harvest. MATERIALS AND METHODS HPC count and flow cytometric CD34+ cell count were measured in 90 peripheral blood samples and 30PBSC samples. The correlation between HPC count and apheretic CD34+ cell yield was examined in 19 patients. RESULTS HPC count showed good correlations with CD34+ cell count in peripheral blood (r = 0.699) and PBSC (r = 0.892). The correlation between peripheral blood HPC count and apheretic CD34+ cell yield also was good (r = 0.789). CONCLUSION Automated HPC counting can be used as a screening test to guide the timing of PBSC harvest.
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Affiliation(s)
- A Endoh
- Division of Laboratory Diagnosis, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan
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45
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Abstract
PURPOSE For diagnosis of infantile hypertrophic pyloric stenosis (HPS), ultrasonography (US) is a useful and objective diagnostic method. In the current study, pyloric diameter, muscular thickness, and pyloric length were measured in normal infants (n = 26) and infants which is an adequate (n = 57). Each score was assigned to relevant measurements, and diagnostic criteria obtained with a scoring system were prepared using statistical skills by the probit analysis. METHODS For scoring, points were given to relevant measurements in conformity with the probit analysis. Zero points were given to patients with no possibility of HPS, 1 point to those with less than 25% probability, 2 points to those with 25% or more but less than 50% probability, and 3 points to patients with 50% or more probability. Points were totaled, and analysis was performed. RESULTS The composite score was evaluated by probit analysis, and cases with a composite score of 2 or less were all included in the normal group, whereas those with a composite score of 3 or more were all in the HPS group. Both groups could thereby be 100% identified. CONCLUSION US was able to diagnose cases with overall score of 2 or less as normal and those with overall score of 3 or higher as having HPS. In addition, after the current diagnostic criteria were prepared, preoperative diagnoses were performed prospectively using them for vomiting neonates and infants, and all cases were correctly discriminated and diagnosed. These findings indicate our ultrasonographic diagnosis criteria are useful for diagnosing HPS.
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Affiliation(s)
- S Ito
- Department of Surgery, Tokyo Medical University Hospital, Tokyo, Japan
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46
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Koyanagi Y. [Efficient replication of human immunodeficiency virus type 1 in cytokine induced CD 4+ T helper 1 (Th 1)- and Th 2-type conditions]. Nihon Rinsho Meneki Gakkai Kaishi 2000; 23:582-5. [PMID: 11210748 DOI: 10.2177/jsci.23.582] [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: 11/15/2022]
Abstract
Potent stimuli for CD 4+ T cell differentiation are cytokines. Among them, IL-12 or IL-4 induce naive CD 4+ T cells to Th 1 or Th 2 cells, respectively. In this study we found that macrophage-tropic (M-tropic) HIV-1 strains more efficiently replicated in interleukin 12 (IL-12) induced T helper 1 (Th 1)-type culture derived from normal CD 4+ T cells than T-cell-line-tropic (T-tropic) strains did. In contrast, T-tropic strains preferentially infected IL-4 induced Th 2-type culture derived from same donor CD 4+ T cells. Additional studies using chimeric viruses demonstrated that the V 3 region of gp 120 was the principle determinant for this efficient replication. It was also isolated T-tropic viruses from an acutely infected patient who had been evidenced as severe CD 4 depletion during short time course. These results indicate that HIV-1 isolates exhibit differences in the ability to infect CD 4+ T cell subset such as Th 1 or Th 2 cells, and that this difference may partly correlate with the viral pathogenesis. The findings suggest that immunological condition is one of the factors responsible for inducing selection of HIV-1 strains.
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Affiliation(s)
- Y Koyanagi
- Department of Virology, Tohoku University School of Medicine
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47
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Yamada K, Yajima T, Yagihashi A, Kobayashi D, Koyanagi Y, Asanuma K, Yamada M, Moriai R, Kameshima H, Watanabe N. Role of human telomerase reverse transcriptase and telomeric-repeat binding factor proteins 1 and 2 in human hematopoietic cells. Jpn J Cancer Res 2000; 91:1278-84. [PMID: 11123427 PMCID: PMC5926307 DOI: 10.1111/j.1349-7006.2000.tb00915.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Telomerase, an enzyme that adds hexameric repeats of 5'-TTAGGG-3', termed telomeres, to the ends of chromosomal DNA, has been implicated in cellular immortalization and cellular senescence. Recently several relevant genes have been cloned, including those encoding three major components of human telomerase: human telomerase RNA component (hTR), human telomerase reverse transcriptase (hTERT), and telomerase-associated protein-1 (TEP1). Also important are genes encoding human telomeric-repeat binding factor proteins (TRF) 1 and 2. We compared 10 human malignant hematopoietic cell lines, 19 samples from patients with acute leukemia and normal granulocytes and monocytes to study telomerase activity and expression of these various genes using a reverse transcription-polymerase chain reaction (RT-PCR). In all 10 malignant cell lines with telomerase activity, hTR, hTERT mRNA, and TEP1 mRNA were expressed, while in normal monocytes and granulocytes without telomerase activity, expression of hTR, but not hTERT mRNA was detected. TEP1 mRNA was expressed in normal monocytes, but not granulocytes. Expression of TRF1 and TRF2 mRNAs was greater in the normal cells than in human malignant hematopoietic cell lines and in 16 samples of patients with acute leukemia. When differentiation of the malignant hematopoietic cell line HL-60 was induced using tumor-necrosis-factor 471 and all-trans retinoic acid (ATRA), telomerase activity decreased gradually during differentiation. Of the three telomerase components, only hTERT mRNA expression showed changes paralleling telomerase activity, becoming undetectable with differentiation. In contrast, initially low expression of TRF1 and TRF2 mRNAs increased during differentiation. Not only hTERT, but also TRF1 and TRF2 are important regulators of telomerase activity that represent potential targets for gene therapy against cancer.
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Affiliation(s)
- K Yamada
- Department of Clinical Laboratory Diagnosis, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo 060-8543, Japan.
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48
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Kusama M, Kaise H, Nakayama S, Oota D, Shimizu H, Aoki T, Koyanagi Y. [A case of breast cancer with multiple metastases successfully treated by medroxyprogesterone acetate with intermittent intra-arterial infusion low-dose chemotherapy to hepatic metastasis]. Gan To Kagaku Ryoho 2000; 27:2243-7. [PMID: 11142170] [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: 02/18/2023]
Abstract
A 48-year-old woman who underwent breast-conserving therapy for left breast cancer developed bone, pleural, and liver metastases with local recurrence. The result was an improvement in each image with a marked improvement as seen by elevated tumor marker levels, with treatment by MPA (800 mg/day p.o.) and intermittent low-dose chemotherapy with hepatic arterial infusion. The side effects were acceptable. Normalization of imagings and an improvement in tumor markers continued for two years. Thus, in spite of being a palliative treatment, hepatic arterial infusion chemotherapy for liver metastasis from breast cancer might lead to prolongation of survival because of the improvement of other metastases due to the increased passage effect with MPA.
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Affiliation(s)
- M Kusama
- Third Dept. of Surgery, Tokyo Medical University
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49
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Miyazawa K, Iwaya K, Kuroda M, Harada M, Serizawa H, Koyanagi Y, Sato Y, Mizokami Y, Matsuoka T, Mukai K. Nuclear accumulation of beta-catenin in intestinal-type gastric carcinoma: correlation with early tumor invasion. Virchows Arch 2000; 437:508-13. [PMID: 11147171 DOI: 10.1007/s004280000283] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Mutation of the adenomatous polyposis coli gene, which is known to be an early event in the carcinogenesis of intestinal-type gastric carcinoma, leads to accumulation of beta-catenin. In addition, beta-catenin has been found to activate down stream signaling molecules in the wingless/Wnt pathway. In this study, the clinical significance of nuclear accumulation of beta-catenin was evaluated in gastric carcinoma. Immunohistochemical staining showed nuclear localization in 16 (12%) of 139 (94 intestinal-type and 45 diffuse-type) gastric carcinomas, and all 16 lesions with nuclear staining were intestinal-type adenocarcinomas. Of the 16 cases, 15 were in the early clinical stage. In the remaining case, the lesion had invaded the subserosal layer and showed strong nuclear staining at the invasive front. In 14 of the 16 cases with nuclear localization, there were no abnormal mobility shifts detected using polymerase chain reaction-single strand conformational polymorphism analysis. This was confirmed using direct sequencing analysis, which revealed the wild-type sequence in the 12 cases tested. Nuclear accumulation of beta-catenin did not correlate with lymph node metastasis or 5-year survival. These findings suggest that high intranuclear levels of beta-catenin protein play an important role in early tumor growth and may function in initiation of invasive processes in intestinal-type gastric carcinoma.
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Affiliation(s)
- K Miyazawa
- First Department of Pathology and Fifth Department of Internal Medicine, Tokyo Medical University, Japan
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50
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Miyashita T, Enosawa S, Suzuki S, Tamura A, Tanaka H, Amemiya H, Matsumura T, Omasa T, Suga K, Aoki T, Koyanagi Y. Development of a bioartificial liver with glutamine synthetase-transduced recombinant human hepatoblastoma cell line, HepG2. Transplant Proc 2000; 32:2355-8. [PMID: 11120198 DOI: 10.1016/s0041-1345(00)01697-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- T Miyashita
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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