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Takagi M, Hoshino A, Bousset K, Röddecke J, Martin HL, Folcut I, Tomomasa D, Yang X, Kobayashi J, Sakata N, Yoshida K, Miyano S, Ogawa S, Kojima S, Morio T, Dörk T, Kanegane H. Bone Marrow Failure and Immunodeficiency Associated with Human RAD50 Variants. J Clin Immunol 2023; 43:2136-2145. [PMID: 37794136 DOI: 10.1007/s10875-023-01591-8] [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: 11/23/2022] [Accepted: 09/20/2023] [Indexed: 10/06/2023]
Abstract
PURPOSE The MRE11-RAD50-NBN (MRN) complex plays a key role in recognizing and signaling DNA double-strand breaks. Pathogenic variants in NBN and MRE11 give rise to the autosomal-recessive diseases, Nijmegen breakage syndrome (NBS) and ataxia telangiectasia-like disorder, respectively. The clinical consequences of pathogenic variants in RAD50 are incompletely understood. We aimed to characterize a newly identified RAD50 deficiency/NBS-like disorder (NBSLD) patient with bone marrow failure and immunodeficiency. METHODS We report on a girl with microcephaly, mental retardation, bird-like face, short stature, bone marrow failure and B-cell immunodeficiency. We searched for candidate gene by whole-exome sequencing and analyzed the cellular phenotype of patient-derived fibroblasts using immunoblotting, radiation sensitivity assays and lentiviral complementation experiments. RESULTS Compound heterozygosity for two variants in the RAD50 gene (p.Arg83His and p.Glu485Ter) was identified in this patient. The expression of RAD50 protein and MRN complex formation was maintained in the cells derived from this patient. DNA damage-induced activation of the ATM kinase was markedly decreased, which was restored by the expression of wild-type (WT) RAD50. Radiosensitivity appeared inconspicuous in the patient-derived cell line as assessed by colony formation assay. The RAD50R83H missense substitution did not rescue the mitotic defect in complementation experiments using RAD50-deficient fibroblasts, whereas RAD50WT did. The RAD50E485X nonsense variant was associated with in-frame skipping of exon 10 (p.Glu485_545del). CONCLUSION These findings indicate important roles of RAD50 in human bone marrow and immune cells. RAD50 deficiency/NBSLD can manifest as a distinct inborn error of immunity characterized by bone marrow failure and B-cell immunodeficiency.
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Affiliation(s)
- Masatoshi Takagi
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Department of Community Pediatrics, Perinatal and Maternal Medicine, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Akihiro Hoshino
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Department of Pediatrics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Kristine Bousset
- Gynaecology Research Unit, Hannover Medical School, 30625, Hannover, Germany
| | - Jule Röddecke
- Gynaecology Research Unit, Hannover Medical School, 30625, Hannover, Germany
| | - Hanna Luisa Martin
- Gynaecology Research Unit, Hannover Medical School, 30625, Hannover, Germany
| | - Iulia Folcut
- Gynaecology Research Unit, Hannover Medical School, 30625, Hannover, Germany
| | - Dan Tomomasa
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Xi Yang
- Department of Pediatrics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
- Division of Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Junya Kobayashi
- Department of Genome Repair Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - Kenichi Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoru Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Laboratory of Sequence Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Thilo Dörk
- Gynaecology Research Unit, Hannover Medical School, 30625, Hannover, Germany.
| | - Hirokazu Kanegane
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-Ku, Tokyo, 113-8519, Japan.
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Sakata N, Nishioka H. Strawberry tongue in Yersinia pseudotuberculosis infection. QJM 2023; 116:447-448. [PMID: 36655789 DOI: 10.1093/qjmed/hcad009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/20/2023] Open
Affiliation(s)
- N Sakata
- Department of General Internal Medicine, Kobe City Medical Center General Hospital, 2-1-1 Minami-machi, Minatojima, Chuo-ku, Kobe City, Hyogo 650-0047, Japan.
| | - H Nishioka
- Department of General Internal Medicine, Kobe City Medical Center General Hospital, 2-1-1 Minami-machi, Minatojima, Chuo-ku, Kobe City, Hyogo 650-0047, Japan
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Kato Y, Kawaguchi H, Sakata N, Ueda S, Okano M, Nishino Y, Ryujin M, Takemura Y, Takemura T, Sugimoto K, Okada S. Pirarubicin Combination Low-Dose Chemotherapy for Early Infantile Stage MS Neuroblastoma: Case Report. Children (Basel) 2023; 10:children10050871. [PMID: 37238419 DOI: 10.3390/children10050871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023]
Abstract
Neuroblastoma (NB) is a neural crest-derived malignant tumor which is diagnosed during infancy in approximately 40% of cases; spontaneous regressions are observed, but there are varying degrees of severity. Treatment is indicated if an infant's condition is at risk of deterioration. Herein, we report the case of a 42-day-old boy who presented with hepatomegaly and was diagnosed with stage MS NB. A pathological diagnosis of "poorly differentiated neuroblastoma with low mitosis-karyorrhexis index, favorable histology" was made; his tumor cells were hyperdiploid and MYCN was not amplified. Because he had respiratory distress caused by the rapidly evolving hepatomegaly, two cycles of chemotherapy containing vincristine and cyclophosphamide were administered in the second and fourth weeks of admission; however, his abdominal tumor did not shrink. In the sixth week of admission, chemotherapy was revised to pirarubicin and cyclophosphamide, and the tumor began to shrink. After discharge, there was no re-elevation of tumor markers; after 1 year, the hepatomegaly and liver metastases disappeared. During the 5-year follow-up, his growth and development were normal and he progressed without sequelae. A regimen that includes pirarubicin could merit further study in the treatment of early infants with stage MS low-risk NB who are at risk of complications.
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Affiliation(s)
- Yutaka Kato
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima-Shi 734-8551, Hiroshima, Japan
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
| | - Hiroshi Kawaguchi
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima-Shi 734-8551, Hiroshima, Japan
| | - Naoki Sakata
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
| | - Satoshi Ueda
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
- Ueda Child Clinic, 591-6 Tsubakihara, Hashimoto 648-0052, Wakayama, Japan
| | - Munehiro Okano
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
- Department of Pediatrics, Kaizuka City Hospital, 3-10-20 Hori, Kaizuka 597-0015, Osaka, Japan
| | - Yuuki Nishino
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
- Department of Pediatrics, Sakai Sakibana Hospital, 2-7-1 Harayamadai, Minami-ku, Sakai 590-0132, Osaka, Japan
| | - Masako Ryujin
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
| | - Yutaka Takemura
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
| | - Tsukasa Takemura
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
- Department of Pediatrics, Kushimoto Municipality Hospital, 691-7, Sangodai, Kushimoto, Higashimuro 649-3510, Wakayama, Japan
| | - Keisuke Sugimoto
- Department of Pediatrics, Faculty of Medicine, Kindai University, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Osaka, Japan
| | - Satoshi Okada
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima-Shi 734-8551, Hiroshima, Japan
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Hagita K, Murashima T, Sakata N, Shimokawa K, Deguchi T, Uehara E, Fujiwara S. Molecular Dynamics of Topological Barriers on the Crystallization Behavior of Ring Polyethylene Melts with Trefoil Knots. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Katsumi Hagita
- Department of Applied Physics, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka239-8686, Japan
| | - Takahiro Murashima
- Department of Physics, Tohoku University, 6-3, Aramaki-aza-Aoba, Aoba-ku, Sendai980-8578, Japan
| | - Naoki Sakata
- Department of Mathematics, Saitama University, 255, Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Koya Shimokawa
- Department of Mathematics, Saitama University, 255, Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan
- Department of Mathematics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Tetsuo Deguchi
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Erica Uehara
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Susumu Fujiwara
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki,
Sakyo-ku, Kyoto606-8585, Japan
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Kodate N, Maeda Y, Hauray B, Tsujimura M, Chan WCH, Mannan H, Yu W, Dalgalarrondo S, Cheung MC, Yumoto A, Suwa S, Donnelly S, Sakata N, O’Shea D, Obayashi K, Masuyama S. Hopes and fears regarding care robots: Content analysis of newspapers in East Asia and Western Europe, 2001-2020. Front Rehabil Sci 2022; 3:1019089. [PMID: 36569638 PMCID: PMC9773842 DOI: 10.3389/fresc.2022.1019089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 11/08/2022] [Indexed: 12/14/2022]
Abstract
Background As a type of welfare technology, care robotics is now widely seen as a potential aide to rehabilitation, increasing independence and enhancing the wellbeing of people with disabilities and older adults. Research into and development of care robots have both been vigorously promoted in North America, Europe and Asia, and the competition for technological advancement in robotics is becoming fierce. AI ethics and policy guidelines are being established. However, there are still differences in attitudes and perceptions, as well as national policies regarding this type of welfare technology. Moreover, despite the anticipated usefulness, it is believed that progress has been slow in the diffusion of care robots. Purpose In order to explore how public discourses support technological innovation, such as care robots, while preparing society for potential risks and impact, we sought to ascertain whether public discourse on care robots varies from region to region. For example, what are the hopes and promises associated with care robots and what are the concerns? Methods To address these questions, this article explored how care robots have been portrayed in five major broadsheet newspapers in five jurisdictions in Asia and Europe (France, Great Britain, Hong Kong SAR, Ireland and Japan). We obtained 545 articles for the period between January 2001 and September 2020, more than half of which originated in Japan. A thematic analysis was conducted of these articles written in four languages (Chinese, English, French and Japanese). Results Positive and negative narratives were teased out, alongside other key prominent themes identified, such as Japan as the land of robots, the pandemic, and the impact of robots on the economy. As the number of robot-related articles grew from the year 2012 onwards, narratives became more nuanced in European newspapers, but not in Asian ones. Furthermore, recent articles began to address the social and relational impact of care robots, while providing concrete examples of improvements in the quality of life for users. Further careful examination will be necessary in the future in order to establish the impact of robotics use in rehabilitation for people with disabilities, older adults, their carers and society at large.
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Affiliation(s)
- N. Kodate
- School of Social Policy, Social Work and Social Justice, University College Dublin, Dublin, Ireland,Public Policy Research Center, Hokkaido University, Sapporo, Japan,La Fondation France-Japon, School for Advanced Studies in the Social Sciences (EHESS), Paris, France,Institute for Future Initiatives, University of Tokyo, Tokyo, Japan,Universal Accessibility and Ageing Research Centre, Nishitokyo, Japan,Correspondence: N. Kodate
| | - Y. Maeda
- Faculty of Business, Technological University DublinDublin, Ireland
| | - B. Hauray
- Institut de recherche interdisciplinaire sur les enjeux sociaux, School for Advanced Studies in the Social Sciences (EHESS), Paris, France,French National Institute of Health and Medical Research (INSERM), Paris, France
| | - M. Tsujimura
- School of Nursing, Shiga University of Medical Science, Otsu, Japan
| | - W. C. H. Chan
- Department of Social Work, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - H. Mannan
- School of Nursing, Midwifery and Health Systems, University College Dublin, Dublin, Ireland,Flame University, Pune, India
| | - W. Yu
- Center for Frontier Medical Engineering, Chiba University, Chiba, Japan
| | - S. Dalgalarrondo
- Institut de recherche interdisciplinaire sur les enjeux sociaux, School for Advanced Studies in the Social Sciences (EHESS), Paris, France,French National Centre for Scientific Research (CNRS), Paris, France
| | - M. C. Cheung
- Department of Social Work, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - A. Yumoto
- Graduate School of Nursing, Chiba University, Chiba, Japan
| | - S. Suwa
- Graduate School of Nursing, Chiba University, Chiba, Japan
| | - S. Donnelly
- School of Social Policy, Social Work and Social Justice, University College Dublin, Dublin, Ireland
| | - N. Sakata
- Center for Information and Communication Technology, Dokkyo Medical University, Mibu, Japan
| | - D. O’Shea
- St Vincent’s University Hospital, Dublin, Ireland,Royal College of Physicians of Ireland, Dublin, Ireland
| | - K. Obayashi
- Universal Accessibility and Ageing Research Centre, Nishitokyo, Japan,Faculty of Healthcare Management, Nihon Fukushi University, Mihama, Japan,Social Welfare Corporation Tokyo Seishin-kai, Nishitokyo, Japan
| | - S. Masuyama
- Universal Accessibility and Ageing Research Centre, Nishitokyo, Japan,Traveler’s Medical Center, Tokyo Medical University, Tokyo, Japan
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Shimada H, Tanizawa A, Kondo T, Nagamura-Inoue T, Yasui M, Tojo A, Muramatsu H, Eto T, Doki N, Tanaka M, Sato M, Noguchi M, Uchida N, Takahashi Y, Sakata N, Ichinohe T, Hashii Y, Kato K, Atsuta Y, Ohashi K, On-Behalf-Of-The-Pediatric-And-Adult-Cml/Mpn-Working-Groups-Of-The-Japanese-Society-For-Transplantation-And-Cellular-Therapy. Prognostic Factors for Outcomes of Allogeneic HSCT for Children and Adolescents/Young Adults with CML in the TKI Era. Transplant Cell Ther 2022; 28:376-389. [PMID: 35447373 DOI: 10.1016/j.jtct.2022.04.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/15/2022] [Accepted: 04/11/2022] [Indexed: 12/20/2022]
Abstract
BACKGROUND The breakthrough effects of tyrosine kinase inhibitors (TKIs) have lessened indications for allogeneic hematopoietic stem cell transplantation (HSCT) in chronic myeloid leukemia (CML). However, HSCT is still attractive for children and adolescents/young adults (AYAs) requiring lifelong TKI therapy. Nevertheless, little has been reported on the outcomes of large clinical studies of HSCT targeting these age groups. OBJECTIVE This study aimed to identify prognostic factors for the outcomes of HSCT, including reduced-intensity conditioning (RIC)-HSCT, for children and AYAs with CML in the TKI era. STUDY DESIGN We performed a registry analysis for 200 patients with CML aged <30 years who underwent pretransplant TKI therapy from the observational nationwide database established by the Japanese Society for Transplantation and Cellular Therapy. The patients received bone marrow (BM), peripheral blood (PB), or cord blood (CB) from either related or unrelated donors. The indication for HSCT for individual patients was determined by the institution according to European LeukemiaNet recommendations and other guidelines. RESULTS The 5-year overall survival (OS) rates for patients with chronic phase (CP) (n = 124), accelerated phase (AP) (n = 23), and blastic phase (BP) (n = 53) at diagnosis were 82.8%, 71.1%, and 73.3%, respectively, with no significant difference (P = 0.3293). The strongest predictor of engraftment was transplant source, with CB (hazard ratio [HR], 0.33) and PB (HR, 2.00) (compared with BM) being independent unfavorable and favorable predictors, respectively. Transplant source was also an independent predictor of chronic GVHD, with PB (HR, 1.81) and CB (HR, 0.39) (compared with BM) being unfavorable and favorable predictors, respectively. The strongest predictor of OS rate for patients with CP at diagnosis was disease phase at HSCT, with second or greater CP, AP, or BP (HR, 2.81) (compared with first CP [CP1]) being an unfavorable predictor. In addition, patients with CP at diagnosis who had major and complete molecular responses at HSCT had excellent outcomes, with 5-year OS rates of 100% and 94.4%, respectively. The 5-year OS rate was compared between RIC (n = 31) and myeloablative conditioning (MAC) (n = 58) in patients with CP1, both of which were 89.3%, with no significant difference (P = 0.9440). On univariate analysis for the RIC cohort with CP at diagnosis, the age at HSCT (HR, 1.27) (increase per year) and the time from diagnosis to HSCT (HR, 1.83) (increase per year) were significant predictors for OS. CONCLUSIONS Our study demonstrates that RIC may be an appropriate alternative to MAC for children and AYAs with CP1. As for the transplant source, we recommend first selecting BM because of a higher engraftment rate compared to CB and a lower incidence of chronic GVHD compared to PB. Although HSCT in the status of a major molecular response is desirable, it is not advisable to continue TKI pointlessly long because age at HSCT and timing of HSCT are prognostic factors that determine survival. The decision to perform RIC-HSCT instead of continuing TKI should be carefully made, considering the possibility of transplant-related complications.
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Affiliation(s)
- Hiroyuki Shimada
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan.
| | - Akihiko Tanizawa
- Department of Pediatrics, Sugita Genpaku Memorial Obama Municipal Hospital, Obama, Japan
| | - Takeshi Kondo
- Department of Hematology, Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Tokiko Nagamura-Inoue
- Department of Cell Processing and Transfusion / Laboratory medicine, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masahiro Yasui
- Emergency Medical Services, Children's Medical Center, Kitakyushu City Yahata Hospital, Kitakyushu, Japan
| | - Arinobu Tojo
- Division of Molecular Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine Nagoya, Japan
| | - Tetsuya Eto
- Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan
| | - Noriko Doki
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
| | - Masatsugu Tanaka
- Department of Hematology, Kanagawa Cancer Center, Yokohama, Japan
| | - Maho Sato
- Department of Hematology/Oncology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Maiko Noguchi
- Department of Pediatrics, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
| | - Naoyuki Uchida
- Department of Hematology, Federation of National Public Service Personnel Mutual Aid Associations Toranomon Hospital, Tokyo, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine Nagoya, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Tatsuo Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Yoshiko Hashii
- Department of Pediatrics, Osaka International Cancer Institute, Osaka, Japan
| | - Koji Kato
- Central Japan Cord Blood Bank, Seto, Japan
| | - Yoshiko Atsuta
- Japanese Data Center for Hematopoietic Cell Transplantation, Nagoya, Japan; Department of Registry Science for Transplant and Cellular Therapy, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Kazuteru Ohashi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
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Sakata N, Mishina R, Ogawa M, Ishihara K, Koda Y, Ozawa M, Shimokawa K. Handlebody decompositions of three-manifolds and polycontinuous patterns. Proc Math Phys Eng Sci 2022; 478:20220073. [PMID: 35510221 PMCID: PMC9053369 DOI: 10.1098/rspa.2022.0073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/10/2022] [Indexed: 11/12/2022] Open
Abstract
We introduce the concept of a handlebody decomposition of a three-manifold, a generalization of a Heegaard splitting, or a trisection. We show that two handlebody decompositions of a closed orientable three-manifold are stably equivalent. As an application to materials science, we consider a mathematical model of polycontinuous patterns and discuss a topological study of microphase separation of a block copolymer melt.
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Affiliation(s)
- N Sakata
- Department of Mathematics, Saitama University, Saitama 338-8570, Japan
| | - R Mishina
- Department of Mathematics, Saitama University, Saitama 338-8570, Japan
| | - M Ogawa
- Department of Mathematics, Saitama University, Saitama 338-8570, Japan
| | - K Ishihara
- Faculty of Education, Yamaguchi University, Yamaguchi 753-8511, Japan
| | - Y Koda
- Department of Mathematics, Hiroshima University, Hiroshima 739-8511, Japan
| | - M Ozawa
- Department of Natural Sciences, Faculty of Arts and Sciences, Komazawa University, Tokyo 154-8525, Japan
| | - K Shimokawa
- Department of Mathematics, Saitama University, Saitama 338-8570, Japan.,Department of Mathematics, Ochanomizu University, Tokyo 112-8610, Japan
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Affiliation(s)
- Katsumi Hagita
- Department of Applied Physics, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka 239-8686, Japan
| | - Takahiro Murashima
- Department of Physics, Tohoku University, 6-3, Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Naoki Sakata
- Department of Mathematics, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
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Hashimoto K, Nishimura S, Sakata N, Inoue M, Sawada A, Akagi M. Characterization of PD-1/PD-L1 immune checkpoint expression in the pathogenesis of musculoskeletal Langerhans cell histiocytosis: A retrospective study. Medicine (Baltimore) 2021; 100:e27650. [PMID: 34713856 PMCID: PMC8556058 DOI: 10.1097/md.0000000000027650] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Received: 06/07/2021] [Accepted: 10/12/2021] [Indexed: 01/05/2023] Open
Abstract
Recent data suggest that programmed cell death -1 (PD-1) and programmed cell death ligand-1 (PD-L1) are involved in the pathogenesis of Langerhans cell histiocytoma (LCH); however, their contributions are not well established. Also, the involvement of PD-1/PD-L1 molecules in musculoskeletal LCH remains particularly unclear. The current study aims to characterize the involvement of PD-1/PD-L1 immune checkpoint system in the pathogenesis of musculoskeletal LCH. PD-1/PD-L1 expression was evaluated in 6 patients, 3 men and 3 women with a mean age of 13.5 years, with musculoskeletal LCH who were treated at Kindai University Hospital and Osaka Women's and Children's Hospital between November 2005 and December 2020. The median follow-up period for all patients with musculoskeletal LCH was 41 months. We surveyed symptoms, number of lesions, treatment modality, and outcomes. Immunostaining for CD4, CD8, PD-1, and PD-L1 was also performed on pathological specimens obtained by biopsy. Multiple lesions were observed in 5 cases, and a single lesion was observed in 1 case. The chief complaint in 5 cases was pain. Four patients underwent spontaneous regression. The other 2 patients received chemotherapy. The outcomes included continuous disease-free (n = 5) and alive with the disease (n = 1). The CD4-, CD8-, PD-1-, and PD-L1-positive rates among all specimens were 100%, 100%, 16.6%, and 83.3%, respectively. The CD4/PD-L1, CD8/PD-L1, and PD-1/PD-L1 positive rates in all the specimens were 83.3%, 83.3%, and 16.6%, respectively. We believe that the PD-1/PD-L1 immune checkpoint molecules may play some role in the microenvironment of musculoskeletal LCH.
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Affiliation(s)
- Kazuhiko Hashimoto
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka, Japan
| | - Shunji Nishimura
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Hospital, Osaka-Sayama City, Osaka, Japan
| | - Masami Inoue
- Department of Hematology/Oncology, Osaka Women's and Children's Hospital, Izumi City, Osaka, Japan
| | - Akihisa Sawada
- Department of Hematology/Oncology, Osaka Women's and Children's Hospital, Izumi City, Osaka, Japan
| | - Masao Akagi
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka, Japan
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10
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Hashimoto K, Nishimura S, Sakata N, Inoue M, Sawada A, Akagi M. Treatment Outcomes of Langerhans Cell Histiocytosis: A Retrospective Study. ACTA ACUST UNITED AC 2021; 57:medicina57040356. [PMID: 33917120 PMCID: PMC8067819 DOI: 10.3390/medicina57040356] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/29/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022]
Abstract
Background and Objectives: Langerhans cell histiocytosis (LCH) is a rare disease characterized by the infiltration of one or more organs by Langerhans cell-like dendritic cells. LCH often involves the bone, and its clinical evidence is limited. The purpose of this study is to report on the treatment of LCH at our institution and to add to the evidence for LCH. Materials and Methods: We reviewed six cases of LCH treated in our hospital between November 2005 and February 2016. Patient age at the first visit, sex, site of origin, symptoms, image tools used for diagnosis, biopsy site, complications, treatment, and final clinical outcome were evaluated. The median follow-up period was 41 months. Results: The median patient age at the first visit was 13.5 years. Three male and three female individuals were enrolled. Multiple lesions were observed in five cases, and a solitary lesion was observed in one case. Pain was the chief complaint in five cases. Radiography was the most commonly used imaging tool. Bone scintigraphy or magnetic resonance imaging and positron emission tomography-computed tomography were also used to diagnose systematic LCH. Biopsy of the femur was performed in two cases, and biopsy of the tibia, lumbar vertebrae, rib, and radius was performed in one case each. Regarding comorbidities, one case of hepatitis B and one case of autism were observed. Chemotherapy was initiated in two patients. The other four patients were observed naturally. Continuous disease-free survival was observed in five patients. One patient remained alive but not without disease during the final follow-up examination. Conclusion: LCH should be diagnosed as early as possible to treat it appropriately.
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Affiliation(s)
- Kazuhiko Hashimoto
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka 589-8511, Japan; (S.N.); (M.A.)
- Correspondence: ; Tel.: +81-072-366-0221; Fax: +81-072-366-0206
| | - Shunji Nishimura
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka 589-8511, Japan; (S.N.); (M.A.)
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Hospital, Osaka-Sayama City, Osaka 589-8511, Japan;
| | - Masami Inoue
- Department of Hematology/Oncology, Osaka Women’s and Children’s Hospital, Izumi City, Osaka 594-1101, Japan; (M.I.); (A.S.)
| | - Akihisa Sawada
- Department of Hematology/Oncology, Osaka Women’s and Children’s Hospital, Izumi City, Osaka 594-1101, Japan; (M.I.); (A.S.)
| | - Masao Akagi
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Osaka 589-8511, Japan; (S.N.); (M.A.)
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11
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Yoshida M, Tanase-Nakao K, Shima H, Shirai R, Yoshida K, Osumi T, Deguchi T, Mori M, Arakawa Y, Takagi M, Miyamura T, Sakaguchi K, Toyoda H, Ishida H, Sakata N, Imamura T, Kawahara Y, Morimoto A, Koike T, Yagasaki H, Ito S, Tomizawa D, Kiyokawa N, Narumi S, Kato M. Prevalence of germline GATA2 and SAMD9/9L variants in paediatric haematological disorders with monosomy 7. Br J Haematol 2020; 191:835-843. [PMID: 32770553 DOI: 10.1111/bjh.17006] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 05/28/2020] [Accepted: 07/06/2020] [Indexed: 01/20/2023]
Abstract
Monosomy 7 (-7) occurs in various types of paediatric myeloid disorders and has a poor prognosis. Recent studies have demonstrated that patients with germline gain-of-function SAMD9/9L variants and loss-of-function GATA2 variants are prone to developing myelodysplastic syndrome (MDS) associated with -7. However, the prevalence of the genetic variants among paediatric haematologic disorders with -7 is unknown. The present study screened germline variants of GATA2 and SAMD9/9L in 25 patients with various types of paediatric haematological disorders associated with -7. The diagnoses of the 25 patients included MDS (n = 10), acute myeloid leukaemia (AML) and myeloid sarcomas (n = 9), juvenile myelomonocytic leukaemia (n = 3) and other disorders (n = 3). Seven patients with a germline pathogenic GATA2 variant were found. For SAMD9/9L screening, next-generation sequencing was used to detect low-abundance variants and found four novel germline variants. Functional analysis revealed that three out of the four variants showed growth-restricting capacity in vitro and thus, were judged to be pathogenic. Cases with GATA2 mutation tended to be older, compared to those with SAMD9/9L mutations. In conclusion, GATA2 and SAMD9/9L were sequenced in 25 patients with paediatric haematologic disorders associated with -7, and 40% of them were found to have some pathogenic germline variants in the three genes.
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Affiliation(s)
- Masanori Yoshida
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Kanako Tanase-Nakao
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirohito Shima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Advanced Pediatric Medicine, Tohoku University School of Medicine, Tokyo, Japan
| | - Ryota Shirai
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Kaoru Yoshida
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tomoo Osumi
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan.,Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Takao Deguchi
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Makiko Mori
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Yuki Arakawa
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Masatoshi Takagi
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takako Miyamura
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kimiyoshi Sakaguchi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | | | - Hisashi Ishida
- Department of Pediatrics, Okayama University Hospital, Okayama, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuta Kawahara
- Department of Pediatrics, Jichi Medical University School of Medicine, Shimotsuke, Japan
| | - Akira Morimoto
- Department of Pediatrics, Jichi Medical University School of Medicine, Shimotsuke, Japan
| | - Takashi Koike
- Department of Pediatrics, Tokai University School of Medicine, Isehara, Japan
| | - Hiroshi Yagasaki
- Department of Pediatrics, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Shuichi Ito
- Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Daisuke Tomizawa
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Motohiro Kato
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan.,Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
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12
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Gao P, Liu S, Yoshida R, Shi C, Yoshimachi S, Sakata N, Goto K, Kimura T, Shirakawa R, Nakayama H, Sakata J, Kawashiri S, Kato K, Wang X, Horiuchi H. Ral GTPase Activation by Downregulation of RalGAP Enhances Oral Squamous Cell Carcinoma Progression. J Dent Res 2019; 98:1011-1019. [PMID: 31329042 DOI: 10.1177/0022034519860828] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Ral small GTPases, consisting of RalA and RalB, are members of the Ras family. Their activity is upregulated by RalGEFs. Since several RalGEFs are downstream effectors of Ras, Ral is activated by the oncogenic mutant Ras. Ral is negatively regulated by RalGAP complexes that consist of a catalytic α1 or α2 subunit and its common partner β subunit and similarly regulate the activity of RalA as well as RalB in vitro. Ral plays an important role in the formation and progression of pancreatic and lung cancers. However, the involvement of Ral in oral squamous cell carcinoma (OSCC) is unclear. In this study, we investigated OSCC by focusing on Ral. OSCC cell lines with high Ral activation exhibited higher motility. We showed that knockdown of RalGAPβ increased the activation level of RalA and promoted the migration and invasion of HSC-2 OSCC cells in vitro. In contrast, overexpression of wild-type RalGAPα2 in TSU OSCC cells attenuated the activation level of RalA and inhibited cell migration and invasion. Real-time quantitative polymerase chain reaction analysis of samples from patients with OSCC showed that RalGAPα2 was downregulated in oral cancer tissues as compared with normal epithelia. Among patients with OSCC, those with a lower expression of RalGAPα2 showed a worse overall survival rate. A comparison of DNA methylation and histone modifications of the RalGAPα2 gene in OSCC cell lines suggested that crosstalk among DNA methylation, histone H4Ac, and H3K27me2 was involved in the downregulation of RalGAPα2. Thus, activation of Ral GTPase by downregulation of RalGAP expression via a potential epigenetic mechanism may enhance OSCC progression.
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Affiliation(s)
- P. Gao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of General and Emergency Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Cancer Therapeutics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - S. Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - R. Yoshida
- Department of Oral and Maxillofacial Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
| | - C.Y. Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - S. Yoshimachi
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - N. Sakata
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - K. Goto
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - T. Kimura
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
- Current affiliation: Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Yamagata, Yamagata, Japan
| | - R. Shirakawa
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - H. Nakayama
- Department of Oral and Maxillofacial Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
| | - J. Sakata
- Department of Oral and Maxillofacial Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
| | - S. Kawashiri
- Department of Oral and Maxillofacial Surgery, Division of Cancer Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa, Japan
| | - K. Kato
- Department of Oral and Maxillofacial Surgery, Division of Cancer Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa, Japan
| | - X.Y. Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H. Horiuchi
- Department of Oral Cancer Therapeutics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
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13
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Sakata N, Suenobu SI, Okano M, Ueda S, Kimura M, Takemura T. Impact of sirolimus treatment for refractory kaposiform hemangioendothelioma with exacerbation of the disease 10 years after initial diagnosis. Rare Tumors 2018; 10:2036361318776185. [PMID: 29872523 PMCID: PMC5977423 DOI: 10.1177/2036361318776185] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/09/2018] [Indexed: 12/15/2022] Open
Abstract
We describe our experience with a 12 year-old girl with kaposiform hemangioendothelioma accompanied by Kasabach–Merritt phenomenon with exacerbation of the disease 10 years after the initial diagnosis. Kaposiform hemangioendothelioma infiltrated into the subcutaneous tissue of the facial skin with deterioration of coagulopathy despite conventional therapies including corticosteroid, vincristine, and propranolol. Sirolimus, a mammalian target of rapamycin inhibitor, produced rapid and dramatic improvement of the Kasabach–Merritt phenomenon and kaposiform hemangioendothelioma shrinkage. Eventually, multifocal lesions of kaposiform hemangioendothelioma disappeared on the images of magnetic resonance imaging and have remained in remission for 27 months after sirolimus cessation. We demonstrated that the AKT/mammalian target of rapamycin signaling pathway played a pivotal role in the kaposiform hemangioendothelioma growth. Sirolimus must be a strong candidate for molecular therapy targeting kaposiform hemangioendothelioma.
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Affiliation(s)
- Naoki Sakata
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - So-Ichi Suenobu
- Division of General Pediatrics and Emergency Medicine, Department of Pediatrics, Oita University Faculty of Medicine, Oita, Japan
| | - Munehiro Okano
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Satoshi Ueda
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Masatomo Kimura
- Department of Pathology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Tsukasa Takemura
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
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14
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Ishida M, Sakata N, Ise I, Ono T, Shimura M, Ishii K, Murakami M, Takadate T, Aoki T, Kudo K, Ohnuma S, Fukase K, Ohtsuka H, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Naitoh T, Unno M. The comparative anatomy of the folds, fossae, and adhesions around the duodenojejunal flexure in mammals. Folia Morphol (Warsz) 2017; 77:286-292. [PMID: 29064554 DOI: 10.5603/fm.a2017.0089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/29/2017] [Accepted: 09/20/2017] [Indexed: 11/25/2022]
Abstract
BACKGROUND Anatomical knowledge of the duodenojejunal flexure is necessary for abdominal surgeries, and also important for physiologic studies about the duodenum. But little is known about the anatomy of this region in mammals. Here, we examined comparative anatomy to understand the anatomical formation of the duodenojejunal flexure in mammals. MATERIALS AND METHODS The areas around the duonenojejunal flexure were ob-served in mouse, rat, dog, pig, and human, and the anatomical structures around the duodenojejunal junction in the animals were compared with those in human. RESULTS The superior and inferior duodenal folds, and the superior and inferior duodenal fossae were identified in all examined humans. In pig, the structures were not clearly identified because the duodenum strongly adhered to the retroperitoneum and to the mesocolon. In mouse, rat, and dog, only the plica duodenocolica, which is regarded as the animal counterpart of the superior duo-denal fold in human, was identified, and other folds or fossae were not observed, probably because the duodenum was not fixed to the parietal peritoneum in those animals. Transection of the plica duodenocolica could return the normally rotated intestine back to the state of non-rotation in rat. CONCLUSIONS This study showed the anatomical similarities and dissimilarities of the duodenojejunal flexure among the mammals. Anatomical knowledge of the area is useful for duodenal and pancreatic surgeries, and for animal studies about the duodenum. (Folia Morphol 2018; 77, 2: 286-292).
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15
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Sakata N, Sasakura K, Matsushita G, Okamoto K, Ohe K. Copper-Catalyzed Regio- and Stereoselective Iodocyanation and Dicyanation of Alkynes with Cyanogen Iodide. Org Lett 2017; 19:3422-3425. [PMID: 28657324 DOI: 10.1021/acs.orglett.7b01378] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
anti-Selective iodocyanation and dicyanation of various internal alkynes has been developed by means of a simple copper catalyst system. The selectivity of the products was switched by tuning the reaction conditions. Mechanistic studies have revealed all of the stepwise pathways including diiodide formation, selective monocyanation, and second cyanation processes.
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Affiliation(s)
- Naoki Sakata
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kohei Sasakura
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Gaku Matsushita
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuhiro Okamoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura , Nishikyo-ku, Kyoto 615-8510, Japan
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16
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Minakata S, Sakata N, Wada N, Konishi Y, Marutani S, Enya T, Nakagawa H, Wada H, Takemura T. Liver fibrosis with hypereosinophilia causing transient abnormal myelopoiesis. Pediatr Int 2016; 58:1222-1225. [PMID: 27709778 DOI: 10.1111/ped.13093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 06/30/2016] [Accepted: 07/13/2016] [Indexed: 01/12/2023]
Abstract
Transient abnormal myelopoesis is mostly self-resolving and has a good prognosis, but some patients subsequently die of liver fibrosis. We report the case of an infant with Down syndrome who developed life-threatening liver fibrosis at the same time as the blasts were about to disappear. This patient also had a marked increase in eosinophils, which were possibly harboring a GATA1 mutation and were expressing a high level of platelet-derived growth factor-B mRNA; these may have been involved in the development of liver fibrosis. Low-dose cytosine arabinoside therapy effectively treated both hypereosinophilia and liver fibrosis.
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Affiliation(s)
- Shunsuke Minakata
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Norihisa Wada
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Yuhei Konishi
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Satoshi Marutani
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Takuji Enya
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Hidenori Nakagawa
- Department of Pediatrics, Yodogawa Christian Hospital, Osaka City, Osaka, Japan
| | - Hiroshi Wada
- Department of Pediatrics, Yodogawa Christian Hospital, Osaka City, Osaka, Japan
| | - Tsukasa Takemura
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan
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17
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Ioka A, Inoue M, Yoneda A, Nakamura T, Hara J, Hashii Y, Sakata N, Yamato K, Tsukuma H, Kawa K. Effects of the Cessation of Mass Screening for Neuroblastoma at 6 Months of Age: A Population-Based Study in Osaka, Japan. J Epidemiol 2015; 26:179-84. [PMID: 26548355 PMCID: PMC4808684 DOI: 10.2188/jea.je20150054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 11/23/2022] Open
Abstract
Background In 2004, the Japanese government halted the 6-month mass screening program for neuroblastoma. We investigated whether its cessation had led to an increase not only in mortality due to this disease but also in the incidence of advanced-stage disease among older children. Methods Study subjects were neuroblastoma patients retrieved from the population-based Osaka Cancer Registry. Trends of incidence and mortality from neuroblastoma were analyzed by calendar year and birth cohort. Prognostic factors, including stage and v-myc avian myelocytomatosis viral oncogene neuroblastoma derived homolog (MYCN) oncogene status, were compared before and after the cessation of mass screening. Results Age-standardized incidence rates in 2005–2009 (the cessation period of mass screening; 11.1 per million) were similar to those in 1975–1979 (the pre-screening period; 8.6 per million). Age-standardized mortality rates tended to decrease from 1975–1979 (4.0 per million) to 2005–2009 (2.7 per million) in parallel with the improvement in survival. Analysis by birth cohort indicated that the mortality rates in 2004–2005 (after cessation) for children 0–4 years of age were lower than those in 1975–1979 (O:E ratio 0.25; 95% confidence interval, 0.03–0.90). For children 1–9 years of age, there was a not significant difference in the distribution of stage, MYCN oncogene status, and DNA ploidy between 1991–2003 (the mass screening period) and 2004–2008 (after cessation). Conclusions The cessation of mass screening for neuroblastoma does not appear to have increased mortality due to this disease or incidence of advanced-stage disease among older children.
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Affiliation(s)
- Akiko Ioka
- Center for Cancer Control and Statistics, Osaka Medical Center for Cancer and Cardiovascular Diseases
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18
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Affiliation(s)
- Kazuhiro Okamoto
- Department
of Energy and
Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
| | - Naoki Sakata
- Department
of Energy and
Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kouichi Ohe
- Department
of Energy and
Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
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19
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Hata T, Sakata N, Yoshimatsu G, Tsuchiya H, Fukase M, Ishida M, Aoki T, Katayose Y, Egawa S, Unno M. Cholestatic Liver Injury After Biliary Reconstruction Impairs Transplanted Islet Viability and Function. Am J Transplant 2015; 15:2085-95. [PMID: 25908212 DOI: 10.1111/ajt.13266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 02/03/2015] [Accepted: 02/11/2015] [Indexed: 01/25/2023]
Abstract
Islet autotransplantation following total pancreatectomy differs from allograft transplantation with respect to the requirement of biliary reconstruction. Although it is known that careful consideration should be given to postoperative cholestatic liver injury after biliary reconstruction, its direct effects on transplanted islets have not been completely elucidated. In this study, we developed a murine model of postoperative cholestatic liver injury after biliary reconstruction with islet autotransplantation that involved syngeneic intraportal islet transplantation into chemically induced diabetic mice and common bile duct ligation. We assessed the viability and function of the transplanted islets. The impaired viability of transplanted islets and increased blood glucose levels indicated restoration of the diabetic state after common bile duct ligation in this murine model. Furthermore, impaired islet viability and function occurred earlier in the transplanted islets than in the surrounding liver tissues, which was consistent with the faster and higher expression of oxidative stress markers in the transplanted islets. Transplanted islets may be more vulnerable to oxidative stress caused by cholestatic liver injury than the surrounding liver tissue. Therefore, patients should be intensively managed after total pancreatectomy with islet autotransplantation to preserve viability and function of the transplanted islets.
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Affiliation(s)
- T Hata
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - N Sakata
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - G Yoshimatsu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - H Tsuchiya
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Fukase
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Ishida
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - T Aoki
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Y Katayose
- Division of Integrated Surgery and Oncology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Egawa
- Division of International Cooperation for Disaster Medicine, International Research Institute of Disaster Science, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.,Division of Integrated Surgery and Oncology, Tohoku University Graduate School of Medicine, Sendai, Japan
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Sakata N, Sax N, Yoshimatsu G, Tsuchiya H, Kato S, Aoki T, Ishida M, Katayose Y, Egawa S, Kodama T, Unno M. Enhanced ultrasonography using a nano/microbubble contrast agent for islet transplantation. Am J Transplant 2015; 15:1531-42. [PMID: 25846610 DOI: 10.1111/ajt.13152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 11/30/2014] [Accepted: 12/09/2014] [Indexed: 01/25/2023]
Abstract
Recent basic and clinical studies have assessed the use of highly sensitive imaging modalities for visualizing transplanted islets. We investigated the utility of enhanced ultrasonography, combined with fluorescent acoustic liposome nano/microbubbles (FALs), for evaluating angiogenesis and the endocrine function of transplanted islets. BALB/c mice were classified into three groups: Diabetic mice that underwent syngeneic islet transplantation into the subrenal capsule and achieved normoglycemia (Tx group); those that failed to achieve normoglycemia (Tx-DM group); and those not receiving any treatment (DM group). Mice were examined by FAL-enhanced high frequency ultrasonography. The echogenicity of the islets increased rapidly within the first minute after injection of FALs and remained at a higher level in the Tx group, while small increases were observed in the other two groups. In histological assessments, fluorescently stained erythrocytes could be seen in and around the transplanted islets, indicating that the transplanted islets were enhanced by infusion of FALs via vessel networks between the engrafted islets and tissue. Furthermore, the echogenicity correlated significantly with endocrine parameters, including blood glucose (BG), serum insulin, and the BG change in the glucose tolerance test. In conclusion, the echogenicity of the islets under FAS-enhanced ultrasonosonography correlated with the endocrine status of transplanted islets.
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Affiliation(s)
- N Sakata
- Department of Surgery, Tohoku University, Sendai, Japan
| | - N Sax
- Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - G Yoshimatsu
- Department of Surgery, Tohoku University, Sendai, Japan
| | - H Tsuchiya
- Department of Surgery, Tohoku University, Sendai, Japan
| | - S Kato
- Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - T Aoki
- Department of Surgery, Tohoku University, Sendai, Japan
| | - M Ishida
- Department of Surgery, Tohoku University, Sendai, Japan
| | - Y Katayose
- Department of Surgery, Tohoku University, Sendai, Japan.,Division of Integrated Surgery and Oncology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Egawa
- Division of International Cooperation for Disaster Medicine, International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - T Kodama
- Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - M Unno
- Department of Surgery, Tohoku University, Sendai, Japan
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21
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Umeda K, Adachi S, Tanaka S, Ogawa A, Hatakeyama N, Kudo K, Sakata N, Igarashi S, Ohshima K, Hyakuna N, Chin M, Goto H, Takahashi Y, Azuma E, Koh K, Sawada A, Kato K, Inoue M, Atsuta Y, Takami A, Murata M. Comparison of continuous and twice-daily infusions of cyclosporine A for graft-versus-host-disease prophylaxis in pediatric hematopoietic stem cell transplantation. Pediatr Blood Cancer 2015; 62:291-298. [PMID: 25307105 DOI: 10.1002/pbc.25243] [Citation(s) in RCA: 5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/12/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND Cyclosporine A (CsA) is used widely for graft-versus-host disease (GVHD) prophylaxis in hematopoietic stem cell transplantation (HSCT); however, the optimal schedule of its administration has not been established. Although comparative studies of adult patients undergoing HSCT have demonstrated enhanced efficacy and safety of twice-daily infusion (TD) compared with continuous infusion (CIF) of CsA, to our knowledge, similar studies have not yet been performed in pediatric groups. PROCEDURE A self-administered questionnaire was used to retrospectively compare the clinical outcome and incidence of CsA-associated adverse events of 70 pediatric acute myelogenous leukemia patients who were receiving CsA by TD (n = 36) or CIF (n = 34) as GVHD prophylaxis for their first allogeneic HSCT. RESULTS The cumulative incidences of grade II-IV acute GVHD and chronic GVHD, as well as the overall survival and event-free survival rates, did not differ significantly between the TD and CIF groups; however, the incidence of severe hypertension was significantly higher in the CIF group than the TD group. CONCLUSIONS The analysis presented here indicates that TD and CIF administration of CsA have similar prophylactic effect on pediatric GVHD and suggest that TD is associated with a lower rate of toxicity than CIF in pediatric patients undergoing HSCT. Pediatr Blood Cancer 2015;62:291-298. © 2014 Wiley Periodicals, Inc.
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Affiliation(s)
- Katsutsugu Umeda
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Souichi Adachi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shiro Tanaka
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Atsushi Ogawa
- Department of Pediatrics, Niigata Cancer Center Hospital, Niigata, Japan
| | - Naoki Hatakeyama
- Department of Pediatrics, Sapporo Medical University Hospital, Sapporo, Japan
| | - Kazuko Kudo
- Division of Hematology and Oncology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kinki University, Faculty of Medicine, Osaka, Japan
| | - Shunji Igarashi
- Division of Pediatrics, Japanese Red Cross Narita Hospital, Narita, Japan
| | - Kumi Ohshima
- Division of Hematology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Nobuyuki Hyakuna
- Center of Bone Marrow Transplantation, Ryukyu University Hospital, Okinawa, Japan
| | - Motoaki Chin
- Department of Pediatrics and Child Health, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Hiroaki Goto
- Division of Hemato-oncology/Regeneration Medicine, Kanagawa Children's Medical Center, Kanagawa, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eiichi Azuma
- Department of Pediatrics and Cell Transplantation, Mie University Graduate School of Medicine, Mie, Japan
| | - Katsuyoshi Koh
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Akihisa Sawada
- Department of Hematology/Oncology, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Koji Kato
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - Masami Inoue
- Department of Hematology/Oncology, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Yoshiko Atsuta
- Japanese Data Center for Hematopoietic Cell Transplantation, Nagoya, Japan
- Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akiyoshi Takami
- Department of Hematology and Oncology, Kanazawa University Hospital, Kanazawa, Japan
| | - Makoto Murata
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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22
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Abstract
Development of both Crohn disease and Guillain-Barré syndrome likely involves autoimmunity associated with excessive inflammatory cytokines. We treated a girl who developed Guillain-Barré syndrome during the course of Crohn disease. Although high-dose γ-globulin therapy administered initially for Guillain-Barré syndrome was ineffective, plasmapheresis ameliorated her acute neuropathic symptoms. Crohn disease was managed with Salazopyrin administration and enteral feeding. Chronic inflammation of the intestinal mucosa caused by Crohn disease can allow presentation of microbial intestinal antigens normally hidden from the immune system. Such presentation could incite an extraintestinal immune response on the basis of molecular mimicry, leading to activation of systemic autoimmunity against the nervous system. Accordingly, concurrence of Guillain-Barré syndrome and Crohn disease in our patient appeared to result from shared autoimmune mechanisms and systemic and local increases in cytokine concentrations. The patient also developed erythema nodosum and gall stones, relatively common complications of Crohn disease. However, Guillain-Barré syndrome is rare.
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Affiliation(s)
- Hidehiko Yanagida
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Keisuke Sugimoto
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Akane Izu
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Norihisa Wada
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Naoki Sakata
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Tsukasa Takemura
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
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23
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Ueda S, Sakata N, Muramatsu H, Sakaguchi H, Wang X, Xu Y, Kojima S, Yamaguchi T, Higa T, Takemura T. Clinical course of juvenile myelomonocytic leukemia in the blast crisis phase treated by acute myeloid leukemia-oriented chemotherapy and allogeneic hematopoietic stem cell transplantation. Int J Hematol 2014; 100:502-6. [DOI: 10.1007/s12185-014-1638-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 07/07/2014] [Accepted: 07/08/2014] [Indexed: 01/10/2023]
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24
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Okano M, Sakata N, Ueda S, Takemura T. Recovery from life-threatening transplantation-associated thrombotic microangiopathy using eculizumab in a patient with very severe aplastic anemia. Bone Marrow Transplant 2014; 49:1116-8. [DOI: 10.1038/bmt.2014.97] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Yanagida H, Tabata N, Sugimoto K, Izu A, Wada N, Sakata N, Okada M, Takemura T. Non-invasive renal artery embolization for renal dysplasia accompanied by hypertension. Pediatr Int 2014; 56:107-9. [PMID: 24548196 DOI: 10.1111/ped.12226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 05/23/2013] [Accepted: 07/01/2013] [Indexed: 11/28/2022]
Abstract
Renovascular hypertension caused by renal dysplasia often is resistant to drug therapy. For a 14-year-old girl with such refractory hypertension, a non-invasive right renal ablation by embolization with anhydrous ethanol using a shepherd 's-crook' balloon catheter, was done. Blood pressure then rapidly normalized. Apart from mild fever after the procedure, no adverse effects occurred. In patients with mild renal artery stenosis and hypertension resistant to anti-hypertensive drug therapy, renal artery embolization may be a useful option.
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Affiliation(s)
- Hidehiko Yanagida
- Department of Pediatrics, Kinki University Faculty of Medicine, Osaka, Japan
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26
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Yoshimatsu G, Sakata N, Tsuchiya H, Ishida M, Motoi F, Egawa S, Sumi S, Goto M, Unno M. Development of polyvinyl alcohol bioartificial pancreas with rat islets and mesenchymal stem cells. Transplant Proc 2014; 45:1875-80. [PMID: 23769061 DOI: 10.1016/j.transproceed.2013.01.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 01/15/2013] [Indexed: 12/30/2022]
Abstract
To improve the function of the polyvinyl alcohol (PVA) bioartificial pancreas, we focused on bone marrow-derived mesenchymal stem cells (MSCs). We examined whether the function of PVA-encapsulated rat islets could be improved by coencapsulation with syngeneic MSCs. We macroencapsulated 1,500 rat islet equivalents (IEQ) with or without 1 × 10(6) MSCs with the use of 3% PVA solution before implantation intraperitoneally into diabetic BALB/c mice. We evaluated the function of the device in vitro (the residual rate, viability, and insulin-releasing function of the islets) and in vivo assessments (blood glucose and serum C-peptide changes after transplantation and glucose tolerance test). Although cultured islets also were destroyed, the shapes of the islets cocultured with MSCs were preserved but not different from encapsulated islets without MSCs. At 96 hours after culture the residual rates of islet recovery among those cocultured with versus without MSCs were 66% versus 39.5%, respectively, (P = .03). On the other hand, there was no significant difference between encapsulated islets with versus without MSCs. Furthermore, the stimulation index of the islets was improved by coculture with MSCs (2.6 ± 0.6 vs 1.4 ± 0.1; P = .03), but no beneficial effects were observed between islets encapsulated with versus without MSCs. The viability of islets cocultured with MSCs was significantly better than that without MSCs (84.2 ± 2.5 vs 73.3 ± 0.9; P = .037), but MSCs did not improve the viability of encapsulated islets. There were no significant differences in blood glucose or serum C-peptide between islets encapsulated with versus without MSCs. The histologic findings showed many degenerative islets and MSCs soon after transplantation. In conclusion, further studies are necessary to develop a novel PVA bioartificial pancreas that can be used with MSCs.
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Affiliation(s)
- G Yoshimatsu
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tohoku University Graduate School of Medicine, Japan
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Affiliation(s)
- Kazuhiro Okamoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masahito Watanabe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Naoki Sakata
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masahito Murai
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Sugimoto K, Sakata N, Fujita S, Miyazawa T, Nishi H, Takemura T, Okada M. Cure of relapsing nephrosis by an allogeneic marrow graft for chronic myelogenous leukemia. Pediatr Nephrol 2013; 28:975-8. [PMID: 23436177 DOI: 10.1007/s00467-013-2433-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Accepted: 01/24/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Minimal-change nephrotic syndrome has recently been attributed to an immature, dysfunctional T-cell population. CASE-DIAGNOSIS/TREATMENT A woman, now 23 years old, developed nephrotic syndrome when she was 6 years old. Despite treatment with steroids and immunosuppressants such as cyclosporine, mizoribine, mycophenolate mofetil, and tacrolimus, the patient relapsed 14 times. At the age of 19 years, she developed chronic myelogenous leukemia, against which imatinib achieved cytogenetic remission. The patient received an allogeneic bone marrow graft transplantation from an unrelated marrow bank donor, with an uncomplicated recovery and molecular genetic remission. Immunosuppressants were withdrawn within 6 months. The patient is now without drug treatment. Complete remission of nephrotic syndrome has also been maintained for over 4 years without any drug administration. CONCLUSIONS The patient's course supports suggestions that immunological dysfunction in nephrosis is associated with abnormality of immature, relatively unclassified T cells (CD34(+)) representing hematopoietic stem cells, as opposed to mature T cells (CD34(-)).
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Affiliation(s)
- Keisuke Sugimoto
- Department of Pediatrics, Kinki University School of Medicine, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Japan
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Abstract
Venous thrombosis is a well-known complication of nephrotic syndrome (NS), while arterial thrombosis is rare. We know of no reports of children with this complication. Here we report a case of 14-year-old girl with NS, who complicated with renal and cerebral infarctions resulting from arterial thrombosis. Urinary examination showed heavy proteinuria. She had intravascular dehydration. Serum albumin was 0.9 g/dL. Contrast-enhanced computed tomography (CT) showed a low-attenuation area in the right kidney. Decreased blood flow in the right middle cerebral artery was observed on MRA and also on multi-detector-row head CT. Urokinase and heparin were given. Cerebral infarction was treated neuroprotectively by i.v. infusion of edaravone. Comprehensive assessment of intravascular dehydration and the coagulation-fibrinolysis system is needed to guide decisions concerning prophylactic anticoagulation therapy. Better understanding of NS and its risks, as well as the necessity of drug therapy, may help teenagers to accept and cooperate with treatment.
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Affiliation(s)
- Keisuke Sugimoto
- Department of Pediatrics, Kinki University School of Medicine, Osaka-Sayama, Japan
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30
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Yamori W, Sakata N, Suzuki Y, Shikanai T, Makino A. Cyclic electron flow around photosystem I via chloroplast NAD(P)H dehydrogenase (NDH) complex performs a significant physiological role during photosynthesis and plant growth at low temperature in rice. Plant J 2011; 68:966-76. [PMID: 21848656 DOI: 10.1111/j.1365-313x.2011.04747.x] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The role of NAD(P)H dehydrogenase (NDH)-dependent cyclic electron flow around photosystem I in photosynthetic regulation and plant growth at several temperatures was examined in rice (Oryza sativa) that is defective in CHLORORESPIRATORY REDUCTION 6 (CRR6), which is required for accumulation of sub-complex A of the chloroplast NDH complex (crr6). NdhK was not detected by Western blot analysis in crr6 mutants, resulting in lack of a transient post-illumination increase in chlorophyll fluorescence, and confirming that crr6 mutants lack NDH activity. When plants were grown at 28 or 35°C, all examined photosynthetic parameters, including the CO(2) assimilation rate and the electron transport rate around photosystems I and II, at each growth temperature at light intensities above growth light (i.e. 800 μmol photons m(-2) sec(-1)), were similar between crr6 mutants and control plants. However, when plants were grown at 20°C, all the examined photosynthetic parameters were significantly lower in crr6 mutants than control plants, and this effect on photosynthesis caused a corresponding reduction in plant biomass. The F(v)/F(m) ratio was only slightly lower in crr6 mutants than in control plants after short-term strong light treatment at 20°C. However, after long-term acclimation to the low temperature, impairment of cyclic electron flow suppressed non-photochemical quenching and promoted reduction of the plastoquinone pool in crr6 mutants. Taken together, our experiments show that NDH-dependent cyclic electron flow plays a significant physiological role in rice during photosynthesis and plant growth at low temperature.
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Affiliation(s)
- Wataru Yamori
- Department of Applied Plant Science, Graduate School of Agricultural Science, Tohoku University, Aoba-ku, Sendai 981-8555, Japan.
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31
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Sugimoto K, Takemura Y, Yanagida H, Fujita S, Miyazawa T, Sakata N, Okada M, Takemura T. Renal tubular dysgenesis and tubulointerstitial nephritis antigen in juvenile nephronophthisis. Nephrology (Carlton) 2011; 16:495-501. [PMID: 21265929 DOI: 10.1111/j.1440-1797.2011.01442.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AIM The relationship between abnormalities of tubular architecture and tubulointerstitial nephritis antigen (TIN-ag) in juvenile nephronophthisis (J-NPH) was evaluated. METHODS Sixteen J-NPH patients were examined. Nephrocystin-1, TIN-ag, type IV collagen, Fas antigen and the C5b-9 complement complex were stained by immunohistochemical methods. RESULTS Renal tubules of patients with J-NPH showed morphological abnormalities of tubular basement membranes (TBM) and frequent apoptosis of tubular epithelial cells. Additionally, the C5b-9 complement complex was deposited within the TBM in the absence of immunoglobulin deposition, suggesting complement-dependent TBM injury. Localization of TIN-ag in the TBM of J-NPH patients disclosed a partial defect or discontinuity in 14 of the 16 patients, while type IV collagen immunoreactivity was relatively preserved. These findings suggest that tubulogenesis is disturbed during nephronogenesis in J-NPH patients because of a defect in nephrocystin, an NPHP gene product. TBM defects induce further morphological abnormalities such as cystic dilation of tubules; as tubular function impairment advances, the incomplete tubules may be injured by C5b-9 complement complexes, followed by apoptotic cell death. CONCLUSION TIN-ag, which is important in early nephrogenesis, lacks normal activity, and vulnerable and incomplete tubules with deficient TIN-ag expression are formed. Removal of these defective tubules by apoptosis combined with the C5b-9 complement complex could be the primary reason for progression to end-stage renal disease in J-NPH patients.
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Affiliation(s)
- Keisuke Sugimoto
- Department of Paediatrics, Kinki University School of Medicine, Osaka, Japan
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Izu A, Yanagida H, Sugimoto K, Fujita S, Sakata N, Wada N, Okada M, Takemura T. Pathogenesis of focal segmental glomerular sclerosis in a girl with the partial deletion of chromosome 6p. TOHOKU J EXP MED 2011; 223:187-92. [PMID: 21372519 DOI: 10.1620/tjem.223.187] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Focal segmental glomerular sclerosis (FSGS) is a leading cause of the nephrotic syndrome and characterized by the sclerosing lesions that affect one or more segments of some glomeruli. We encountered a female patient with a partial deletion of chromosome 6p, who presented proteinuria at age 3 years. Detailed chromosomal analysis disclosed an interstitial deletion of 6p: del(6)(p22.1p22.3). No abnormality such as hydronephrosis or renal agenesis was disclosed by imaging, but FSGS was present in a renal biopsy specimen. The patient is currently 11 years old and shows mental retardation with mild deterioration in the renal function. To address the defective genes in the present patient, we carried out comparative genomic hybridization (CGH), showing that E2F3 on chromosome 6p is absent in this patient. E2F3, a member of the E2F family transcription factors, inhibits expression of vascular endothelial growth factor (VEGF) and induces apoptosis during vascular development. The deletion of E2F3 was also detected by employing a PCR method, suggesting that glomerular architecture had been compromised in this patient. Serum VEGF concentrations were elevated to 177 ± 21.4 pg/mL (upper limit of 33.3 pg/mL), when she was 6 years old, associated with the enhanced expression of VEGF in glomeruli. These findings suggest that the dysregulation of VEGF synthesis caused by the deletion of E2F3 may be associated with development of FSGS. In conclusion, among patients with idiopathic FSGS, an abnormality of E2F3 may exist on chromosome 6p. Therefore, one might consider chromosomal analyses in children with FSGS who have mental retardation.
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Affiliation(s)
- Akane Izu
- Department of Pediatrics, Kinki University School of Medicine, Osaka, Japan
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33
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Ito N, Tashiro T, Sakata N, Morishige N, Nishimi M, Takeuchi K, Hayashida Y, Minematsu N, Kuwahara G, Sukehiro Y, Teratani H, Fukagawa H. Histological Evaluation of Skeletonized Internal Thoracic Artery Using ForceTriad™. Thorac Cardiovasc Surg 2011; 59:416-20. [DOI: 10.1055/s-0030-1271118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ueda S, Sugimoto K, Yanagida H, Fujita S, Miyazawa T, Sakata N, Okada M, Takemura T. Low-Density Lipoprotein Adsorption Therapy Can Restore Drug Sensitivity for Immunosuppressants Via Inhibitory Effects Upon MDR-1 Gene Expression. Ther Apher Dial 2011; 15:499-503. [DOI: 10.1111/j.1744-9987.2011.00984.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
We encountered a boy with periodic fever, aphthous-stomatitis, pharyngitis, adenitis syndrome, complicated by a papular rash representing pityriasis lichenoides et varioliformis acuta. Proinflammatory cytokines have been implicated in both diseases and may represent the underlying common immunologic mechanism causing the two diseases.
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Affiliation(s)
- Yoshinori Iba
- Department of Pediatrics, Kinki University School of Medicine, Osaka-Sayama, Japan
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36
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Yamamoto D, Iwase S, Odagiri H, Kuroda Y, Akazawa K, Kitamura K, Kawaguchi T, Yamamoto C, Nagumo Y, Sakata N. A randomized multicenter phase II trial of capecitabine versus S-1 as first-line treatment in unresectable or recurrent breast cancer patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.tps136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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37
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Kuroda Y, Kawaguchi T, Iwase S, Yamamoto D, Odagiri H, Yamaguchi T, Sakata N, Sakura O, Nagumo Y, Nakagawa K. Evaluation of trait anxiety as predictors of psychological distress and low HRQL among breast cancer patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19568] [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: 11/20/2022] Open
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Nakamura S, Tanaka IB, Tanaka S, Nakaya K, Sakata N, Oghiso Y. Adiposity in Female B6C3F1 Mice Continuously Irradiated with Low-Dose-Rate γ Rays. Radiat Res 2010; 173:333-41. [DOI: 10.1667/rr1962.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sawada A, Sakata N, Higuchi B, Takeshita Y, Ishihara T, Sakata A, Kouroki M, Kondo O, Koyama M, Hirano S, Yasui M, Inoue M, Yoshioka A, Kawa K. [Comparison of micafungin and fosfluconazole as prophylaxis for invasive fungal infection during neutropenia in children undergoing chemotherapy and hematopoietic stem cell transplantation]. Rinsho Ketsueki 2009; 50:1692-1699. [PMID: 20068276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Invasive fungal infection (IFI) is a serious complication of chemotherapy for hematological malignancies and autologous/allogeneic hematopoietic stem cell transplantation in children and shows a high mortality rate. We performed a randomized trial comparing micafungin (MCFG), a new anti-fungal agent, with fosfluconazole, a prodrug of fluconazole (FF) conventionally used as a prophylactic agent, for prophylaxis against IFI. Cefpirome was administered as prophylaxis against bacterial infection, and meropenem+minocycline as an empiric window therapy for febrile neutropenia. MCFG 2 mg/kg/day (max 100 mg/day) and FF 10 mg/kg/day (max 400 mg/day) were both safe and effective (event free ratio of IFI, MCFG 94.4% vs FF 94.3%) without significant difference. Thus, MCFG is safe and can be used for prophylaxis against IFI in children.
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Affiliation(s)
- Akihisa Sawada
- Department of Hematology/Oncology, Osaka Medical Center and Research Institute for Maternal and Child Health
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Tabata N, Sugimoto K, Ueda S, Sakata N, Okada M, Miyake T, Shinohara T, Yagi M, Satou T, Takemura T. Severe skeletal muscle damage following the administration of mesalazine to a patient with ulcerative colitis. Pediatr Int 2009; 51:759-60. [PMID: 19664011 DOI: 10.1111/j.1442-200x.2009.02935.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nobutada Tabata
- Department of Pediatrics, Kinki University School of Medicine, Osaka-Sayama, Osaka 589-8511, Japan.
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Abstract
BACKGROUND Embolic occlusion of the portal vein due to islet transplantation is one of the major reasons for reduced survival of transplanted islets. In this study, we examined the location of islets as well as the correlation between islet and portal vein size after intraportal islet transplantation, and evaluated liver and islet pathology. METHODS BALB/c mice were intraportally transplanted with 800 islets and the liver was examined at postoperative day (POD) 0 (n=7), POD 2 (n=4) and POD 28 (n=3). Liver specimens were stained for hematoxylin and eosin (necrosis), insulin, and TUNEL (apoptosis). We evaluated distance from liver surface to islets, islet and portal vein diameter, embolic ratio (islet diameter/portal vein diameter), apoptosis/necrosis of islets and apoptosis/necrosis of the liver tissue surrounding the islet. RESULTS The liver was divided into peripheral and central sites. Islet and liver apoptosis/necrosis were significantly higher at peripheral sites. In regions without liver apoptosis or necrosis, portal vein diameter was significantly larger and embolic ratios were significantly lower. CONCLUSION Transplanted islets and liver tissue exhibited more injury at peripheral sites, in part, due to smaller diameters of portal venules that result in more frequent emboli following islet transplantation.
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Affiliation(s)
- Naoki Sakata
- Islet Transplant Laboratory, Department of Pediatrics, Loma Linda University School of Medicine, Loma Linda, CA, USA
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Sakata N, Tan A, Chan N, Obenaus A, Mace J, Peverini R, Sowers L, Chinnock R, Hathout E. Efficacy comparison between intraportal and subcapsular islet transplants in a murine diabetic model. Transplant Proc 2009; 41:346-9. [PMID: 19249553 DOI: 10.1016/j.transproceed.2008.08.155] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Accepted: 08/10/2008] [Indexed: 02/07/2023]
Abstract
BACKGROUND It is important to determine the efficacy of intraportal (IP) islet transplantation in comparison with other transplant sites. In this study, we sought to determine the optimal number of islets to achieve normoglycemia following transplantation into the liver versus the kidney using a mouse model. METHODS Streptozotocin-induced diabetic mice (Balb/C) were transplanted with syngeneic islets via the IP versus renal subcapsular (SC) routes. The transplanted islet numbers were 0 to 800 (n = 3-5). We assessed the correlation between parameters and islet numbers, comparing IP versus SC groups. The parameters were: (1) percentage of normoglycemia; (2) postoperative days to normoglycemia; (3) mean blood glucose levels at various points from pretransplantation to the end of the study (postoperative day 28); (4) mean serum insulin; and (5) area under the curve of blood glucose levels after glucose injection. RESULTS Two hundred islets yielded normoglycemia in renal subcapsular grafts, while 800 islets were the minimum required for normoglycemia with IP transplantation. The transplant efficacy in SC transplantation was 2 to 5 times greater than that of IP transplantation. The days to normoglycemia were significantly different between IP versus renal SC islets (13.25 +/- 4.38 days vs 4.50 +/- 0.81 days; P = .007). CONCLUSION The efficacy of islet transplantation in murine diabetic models was significantly greater under the kidney capsule. Clinical islet transplantation could benefit from trials of alternative transplant sites.
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Affiliation(s)
- N Sakata
- Islet Transplant Laboratory, Department of Pediatrics, Loma Linda University School of Medicine, Loma Linda, California 92354, USA.
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Sakata N, Toguchi N, Kimura M, Nakayama M, Kawa K, Takemura T. Development of Langerhans cell histiocytosis associated with chronic active Epstein-Barr virus infection. Pediatr Blood Cancer 2008; 50:924-7. [PMID: 17474115 DOI: 10.1002/pbc.21249] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chronic active Epstein-Barr virus (CAEBV) infection is characterized by a status of lymphoproliferative disease of EBV-infected cells, resulting in chronic or recurrent infectious mononucleosis-like symptoms. CAEBV is always accompanied by life-threatening complications. We report the case of a 2-year-old female patient with CAEBV who subsequently developed Langerhans cell histiocytosis (LCH) presenting with bilateral exophthalmos, bone, and skin involvement. In situ hybridization for EBER revealed EBV-infected B-cells present in lesional tissue implying that interactions between EBV-infected B-cells and lesional Langerhans cells may be associated with the development of LCH.
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Affiliation(s)
- Naoki Sakata
- Department of Pediatrics, Kinki University School of Medicine, Osaka, Japan.
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Okamoto F, Okamoto C, Sakata N, Hiratsuka K, Yamane N, Hiraoka T, Kaji Y, Oshika T. Changes in Corneal Topography after 25-Gauge Transconjunctival Sutureless Vitrectomy versus after 20-Gauge Standard Vitrectomy. Ophthalmology 2007; 114:2138-41. [PMID: 18054632 DOI: 10.1016/j.ophtha.2007.01.034] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2006] [Revised: 01/12/2007] [Accepted: 01/20/2007] [Indexed: 10/22/2022] Open
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Ichiki A, Nakakura K, Sakata N, Sasaki A, Tai Y. Water quality estimation in consideration of pollutant runoff and internal production in Lake Biwa, Japan. Water Sci Technol 2007; 55:167-75. [PMID: 17410853 DOI: 10.2166/wst.2007.085] [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: 05/14/2023]
Abstract
Lake Biwa is the largest lake in Japan, and water quality in the lake is heterogeneous. Therefore, it is important for water quality management that spatial distribution of water quality in the lake should be clearly understood. The objectives of this study are to show a methodology and to develop a simulation system to calculate COD distribution in Lake Biwa taking internal COD production into consideration. This study also aims to examine transition of COD in the lake using the simulation system. In the simulation system, runoff loads of COD from the Lake Biwa basin are calculated by Macro Model for each tributary. The external COD concentration in 233 inshore meshes of the Lake Biwa water surface was calculated using the runoff loads. The internal COD was calculated using relationships among limiting nutrients, chlorophyll-a and COD. Then, the spatial distribution of water quality in Lake Biwa was calculated both for the external and internal COD by spline technique. Simulations using the system were implemented for 1986-1998, and a clear difference in characteristics between a drought year and a flood year was shown. In the result, it was shown that the simulation system developed here was available to calculate COD distribution in Lake Biwa, and that it had the possibility to explain the recent phenomenon of COD increase in the lake.
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Affiliation(s)
- A Ichiki
- Department of Environmental Systems Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan.
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Inoue M, Yasui M, Sawada A, Koyama M, Sakata A, Takeshita Y, Kouroki M, Okamura T, Sakata N, Kawa K. [The role of cord blood stem cell transplantation in children; a retrospective analysis of 39 cases in a single institute]. Rinsho Ketsueki 2006; 47:1446-52. [PMID: 17176887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report the results of 39 children who underwent cord blood stem cell transplantation (CBSCT) at our institute during the period from February 1996 to July 2005. The patients consisted of 9 with non-malignant disease, 26 with malignant disease and 4 with Epstein-Barr virus (EBV) associated disease. The median age of the patients was 4 years and 8 months (range, 6 months to 16 years 2 months). The median infused cell dose was 4.9 (range, 1.7-11.4) x 10(7)/kg. Thirty-four transplants were from HLA-mismatched donors, and 33 patients underwent a tacrolimus-containing regimen for GVHD prophylaxis. As for CBSCT as the first transplant, 3 out of 4 children with non-malignant disease achieved engraftment after CBSCT with the use of a reduced-intensity conditioning regimen. For acute leukemia, 3 patients out of 5 in their first remission and 2 out of 9 in advanced stage at CBSCT continue in remission at the time of writing. Fourteen patients received CBSCT as a second or a third transplant. None of 4 patients who underwent CBSCT as rescue therapy after rejection/graft failure achieved engraftment. It should be emphasized that EBV-associated disease seems to be a suitable disease for CBSCT, because all of the 4 patients who underwent CBSCT are still in CR.
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Affiliation(s)
- Masami Inoue
- Department of Pediatrics, Osaka Medical Center and Research Institute for Maternal and Child Health
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Ishii E, Oda M, Kinugawa N, Oda T, Takimoto T, Suzuki N, Kosaka Y, Ohara A, Ogawa A, Ishii M, Sakata N, Okamura T, Koike K, Kojima S, Horibe K, Mizutani S. Features and outcome of neonatal leukemia in Japan: experience of the Japan infant leukemia study group. Pediatr Blood Cancer 2006; 47:268-72. [PMID: 16333820 DOI: 10.1002/pbc.20599] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Neonatal leukemia characterized by early stem cell origin and extramedullary infiltration in the first 4 weeks of life is rare. We analyzed the features and outcome of neonatal leukemia in Japan to establish an appropriate treatment strategy for this rare disorder. PROCEDURE Patients with infant leukemia registered and treated in the Japan Infant Leukemia Study between 1996 and 2001 were analyzed. RESULTS Among 162 infant leukemia patients, 11 exhibited neonatal leukemia; frequencies for all infant leukemias were 6.9% (8/116) for acute lymphoblastic leukemia (ALL) and 7.3% (3/41) for acute myeloid leukemia (AML). Positive MLL gene rearrangement was observed in all eight patients with ALL; a single patient with AML displayed germline configuration. Acute monoblastic leukemia was apparent in all three patients with AML (M5a in the FAB classification). Most of the patients demonstrated hepatoplenomegaly and hyperleukocytosis at diagnosis. Cutaneous and central nervous system involvement were detected in half of the patients. Four patients (one with AML, and three with ALL) have survived following stem cell transplantation (SCT); however, growth impairment related to SCT was observed in these patients. CONCLUSIONS These results suggest an improvement attributable to treatment of neonatal leukemia. International-based collaborative studies are necessary to investigate the biology of this condition and to establish appropriate therapeutic strategies.
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Affiliation(s)
- Eiichi Ishii
- Department of Pediatrics, Saga University, Nabeshima, Saga, Japan.
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Sawada A, Sato E, Koyama M, Higuchi B, Kusuki S, Kim JY, Takeshita Y, Sakata A, Sakata N, Okamura T, Yasui M, Inoue M, Kawa K. NK-cell repertoire is feasible for diagnosing Epstein-Barr virus-infected NK-cell lymphoproliferative disease and evaluating the treatment effect. Am J Hematol 2006; 81:576-81. [PMID: 16823820 DOI: 10.1002/ajh.20659] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Epstein-Barr virus (EBV) occasionally infects T and NK cells and causes EBV-infected T/NK-cell lymphoproliferative disease (LPD), which comprises chronic active EBV infection, EBV-associated hemophagocytic syndrome, mosquito allergy, hydroa vacciniforme, aggressive NK-cell leukemia, and NK/T-cell lymphoma. The diagnosis is proven by the monoclonal proliferation of EBV-infected T or NK cells, which is a time-consuming and complicated method. T-cell monoclonality is helpful for the screening of EBV-infected T-cell LPD in patients with EBV-genome burden and is easily shown with T-cell-receptor rearrangement or the T-cell repertoire, whereas NK-cell monoclonality is difficult to prove due to its lacking such rearranged receptors. We investigated a set of killer immunoglobulin-like receptors (KIRs) and also CD94-NKG2 heterodimers on NK cells, namely the NK-cell repertoire. Skewed repertoires were seen in all patients with EBV-infected NK-cell LPD, but not in any patients with EBV-infected T-cell LPD and were restored only after successful treatment. The normal KIR repertoire is variable for each individual and it seems difficult to detect minimal residual EBV-infected lymphocytes. However, the NK-cell repertoire is feasible for identifying EBV-infected NK-cell LPD and evaluating the treatment effect.
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Affiliation(s)
- Akihisa Sawada
- Department of Pediatric Hematology/Oncology, Osaka Medical Center and Research Institute for Maternal and Child Health, 840 Murodo, Izumi City, Osaka 594-1101, Japan.
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Matsuyama N, Kojima Y, Hirayama F, Yasui K, Taniue A, Fukumori Y, Yoshimura K, Tabata N, Sakata N, Tani Y, Shibata H. Simultaneous five cell-lineage flow cytometric analysis system for detection of leucocyte antibodies. Transfus Med 2006; 16:111-8. [PMID: 16623917 DOI: 10.1111/j.1365-3148.2006.00642.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Although flow cytometric (FCM) analysis is one of the most widely used approaches to screen the presence of leucocyte antibodies, it has several drawbacks. First, neutrophils and, especially, monocytes exhibit high background reactivity. Second, to determine antibody specificity, it is often necessary to examine not only neutrophils and monocytes but also other lineage cells including T cells, B cells and platelets. Therefore, we attempted to establish an FCM analysis system in which four lineages of leucocytes and platelets are simultaneously tested with low background. FCM analysis was performed using ethylene diamine tetraacetic acid-anticoagulated whole blood as cell sample without any cell preparation. Discrimination of five cell lineages was carried out based on the differences in forward vs. side scatter distribution and in the expression of CD4, CD20 and CD14. When anti-HNA (human neutrophil antigen) 1b antiserum was applied to HNA 1b-positive blood samples, only neutrophils were unambiguously positive. When anti-Naka (anti-CD36) antiserum was applied, only platelets and monocytes were positive. The background reactivity of neutrophils and monocytes was low enough. When anti-human leucocyte antigen (HLA) class II antiserum was tested, only B-lymphocytes and monocytes were positive. When anti-HLA class I antiserum was tested, all the five-lineage cells were positive.
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Affiliation(s)
- N Matsuyama
- Japanese Red Cross Osaka Blood Center, Kinki University School of Medicine, Osaka, Japan
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Inoue M, Okamura T, Yasui M, Sawada A, Sakata N, Koyama M, Sakata A, Takeshita Y, Kouroki M, Yagi K, Kawa K. Increased intensity of acute graft-versus-host disease after reduced-intensity bone marrow transplantation compared to conventional transplantation from an HLA-matched sibling in children. Bone Marrow Transplant 2006; 37:601-5. [PMID: 16444280 DOI: 10.1038/sj.bmt.1705285] [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: 11/09/2022]
Abstract
Eight children underwent reduced-intensity stem cell transplantation (RIST) from an HLA-matched sibling. They received a fludarabine-melphalan based preparative regimen. Stem cell source was bone marrow, and GVHD prophylaxis consisted of cyclosporine A alone. Acute GVHD grade II-IV and grade III-IV were observed in four (50%) and three (37.5%), respectively, out of these eight patients. This incidence was significantly higher than that after conventional bone marrow transplantation, without severe tissue damage, in the same setting of stem cell source and GVHD prophylaxis. Although the number of patients is small, our results suggest that incidence of acute GVHD after RIST for children is significant. It should be remembered that RIST for children does not seem to be an easy transplant procedure from the viewpoint of acute GVHD, although RIST is less toxic.
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Affiliation(s)
- M Inoue
- Department of Pediatrics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan.
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