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Funato M, Iwata R, Iimoto M. Efficacy of 5% sofpironium bromide gel in Duchenne muscular dystrophy with palmoplantar hyperhidrosis: A retrospective case study. J Dermatol 2024; 51:135-139. [PMID: 37795807 DOI: 10.1111/1346-8138.16990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/10/2023] [Accepted: 09/20/2023] [Indexed: 10/06/2023]
Abstract
Duchenne muscular dystrophy (DMD) is a severe, progressive, muscle-wasting disease. Notably, several extramuscular manifestations and complications of advanced DMD, including skin disorders, are known. However, hyperhidrosis and its treatment have not been well-described in association with advanced DMD, therefore we aimed to confirm the efficacy of 5% sofpironium bromide gel in treating secondary hyperhidrosis in patients with advanced DMD. We retrospectively reviewed patients with advanced DMD who underwent treatment with 5% sofpironium bromide gel. All patients were evaluated using the hyperhidrosis disease severity scale (HDSS) score and by measuring the gravimetric weight of palmar and/or plantar sweat. Three patients with advanced DMD were treated and the patients were aged 28, 31, and 32 years, respectively. Their HDSS scores showed a decreasing tendency within 5 weeks after treatment. In addition, all patients had a decreased gravimetric weight of palmar and/or plantar sweat, and the mean decrease rate of palmar sweat at 7 weeks after treatment was 53.7%. One patient had skin dryness on both soles, but no serious adverse events were observed. Treatment using 5% sofpironium bromide gel showed beneficial efficacy against palmoplantar hyperhidrosis in patients with advanced DMD. These findings warrant further investigation in future studies.
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Affiliation(s)
- Michinori Funato
- Department of Pediatric Neurology, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Reina Iwata
- Department of Pharmacy, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Masami Iimoto
- Department of Nursing, National Hospital Organization Nagara Medical Center, Gifu, Japan
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Funato M, Kino A, Iwata R, Yumioka M, Yamashita K, Urui C, Uno R, Kondo E, Morioka E, Ogawa Y, Kawamura A, Kusukawa T, Minatsu H. Later efficacy of nusinersen treatment in adult patients with spinal muscular atrophy: A retrospective case study with a median 4-year follow-up. Brain Dev 2024; 46:62-67. [PMID: 37657961 DOI: 10.1016/j.braindev.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/16/2023] [Accepted: 08/16/2023] [Indexed: 09/03/2023]
Abstract
BACKGROUND Spinal muscular atrophy (SMA) is a hereditary neuromuscular disorder characterized by skeletal muscle atrophy and weakness. New treatments for SMA have been developed namely, the drugs nusinersen, onasemnogene abeparvovec, and risdiplam. However, there are limited reports on their effects on adult patients with SMA, particularly over long periods. Therefore, this study aimed to determine the efficacy of nusinersen treatment in adult patients with SMA. METHODS We retrospectively reviewed patients with SMA type 2 or 3 who received nusinersen treatment between January 2018 and January 2023. All patients were evaluated using the Hammersmith Functional Motor Scale-Expanded (HFMSE) before the commencement of nusinersen treatment, and the change with respect to the baseline HFMSE score was compared. RESULTS A total of six patients, three patients each with SMA type 2 or 3, were treated with nusinersen. The median age of the patients before the commencement of nusinersen treatment was 51.5 years (range, 33-59 years), and the median treatment period was 50.5 months (range, 33-57 months). Three patients showed an increased tendency of improvement on the HFMSE at 15-26 months after nusinersen treatment, and the HFMSE score was maintained in two patients. Significant adverse events were observed in three patients: one subdural hematoma, one incidental bone fracture, and one cheek dermatofibrosarcoma. CONCLUSIONS Nusinersen treatment showed later efficacy in adult patients with SMA type 2 or 3. The distinct efficacy of nusinersen requires further investigation using a large number of cases and a long follow-up period.
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Affiliation(s)
- Michinori Funato
- Department of Pediatric Neurology, National Hospital Organization Nagara Medical Center, Gifu, Japan.
| | - Atsunari Kino
- Department of Anesthesia, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Reina Iwata
- Department of Pharmacy, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Misaki Yumioka
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kohei Yamashita
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Chika Urui
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Ryoya Uno
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Emi Kondo
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Etsuko Morioka
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Yoko Ogawa
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Akihisa Kawamura
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Toshifumi Kusukawa
- Department of Rehabilitation, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Hiroshi Minatsu
- Department of Pediatric Surgery, National Hospital Organization Nagara Medical Center, Gifu, Japan
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3
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Nakamura A, Matsumura T, Ogata K, Mori‐Yoshimura M, Takeshita E, Kimura K, Kawashima T, Tomo Y, Arahata H, Miyazaki D, Takeshima Y, Takahashi T, Ishigaki K, Kuru S, Wakisaka A, Awano H, Funato M, Sato T, Saito Y, Takada H, Sugie K, Kobayashi M, Ozasa S, Fujii T, Maegaki Y, Oi H, Tachimori H, Komaki H. Natural history of Becker muscular dystrophy: a multicenter study of 225 patients. Ann Clin Transl Neurol 2023; 10:2360-2372. [PMID: 37882106 PMCID: PMC10723226 DOI: 10.1002/acn3.51925] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 10/02/2023] [Indexed: 10/27/2023] Open
Abstract
OBJECTIVE Becker muscular dystrophy (BMD) is a milder variant of Duchenne muscular dystrophy (DMD), a lethal X-linked muscular disorder. Here, we aim to investigat the clinical involvement of skeletal, respiratory, cardiac, and central nervous systems in patients with BMD, as well as genotype-phenotype relationships. METHODS This nationwide cohort study investigated the clinical manifestations and genotype-phenotype relationships in 225 patients with BMD having in-frame deletion from 22 medical centers. The primary outcome was to elucidate the association of genotype with skeletal muscle, respiratory, cardiac, and central nervous system disorders. Descriptive statistics were used to analyze the data. RESULTS The average age of the subjects was 31.5 (range, 1-81) years. Initial symptoms of BMD were muscular (60%), followed by asymptomatic hypercreatine kinasemia (32.4%) and central nervous system disorders (5.3%). Gait disturbance was observed in 53.8% of patients and the average age at wheelchair introduction was 36.5 years. The ventilator introduction rate was 6.7% at an average age of 36.6 years. More than 30% of patients had an abnormal electrocardiogram and approximately 15% had heart failure symptoms. Cardiac function on echocardiography varied significantly among the patients. The frequencies of seizures and intellectual/developmental disability were 8.0% and 16.9%, respectively. Exon 45-47deletion (del) was the most common (22.6%), followed by exon 45-48del (13.1%). Patients with exon 45-49del patients demonstrated severe skeletal muscle damage. Patients with exon 45-47del and exon 45-55del patients did not require ventilator use. INTERPRETATION The study provides important prognostic information for patients and clinicians to establish therapy plans and to implement preventative medicine.
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Affiliation(s)
- Akinori Nakamura
- Department of NeurologyNHO Matsumoto Medical CenterMatsumotoJapan
| | | | - Katsuhisa Ogata
- Department of NeurologyNHO Higashisaitama National HospitalHasudaJapan
| | - Madoka Mori‐Yoshimura
- Department of NeurologyNational Center Hospital, National Center of Neurology and PsychiatryKodairaJapan
| | - Eri Takeshita
- Department of Child NeurologyNational Center Hospital, National Center of Neurology and PsychiatryKodairaJapan
| | - Koichi Kimura
- Department of Laboratory Medicine/CardiologyThe Institute of Medical Science, The University of TokyoMinato‐kuJapan
| | - Takahiro Kawashima
- Department of Information Medicine, National Center of Neurology and PsychiatryNational Institute of NeuroscienceKodairaJapan
| | - Yui Tomo
- Department of Clinical Data Science, Clinical Research & Education Promotion Division, National Center of Neurology and PsychiatryKodairaJapan
| | - Hajime Arahata
- Department of Neurology, Neuro‐Muscular CenterNHO Omuta National HospitalOmutaJapan
| | - Daigo Miyazaki
- Department of Medicine (Neurology and Rheumatology)Shinshu University School of MedicineMatsumotoJapan
| | - Yasuhiro Takeshima
- Department of PediatricsHyogo Medical University School of MedicineNishinomiyaJapan
| | | | - Keiko Ishigaki
- Department of PediatricsTokyo Women's Medical University School of MedicineShinjuku‐kuJapan
| | - Satoshi Kuru
- Department of NeurologyNHO Suzuka National HospitalSuzukaJapan
| | - Akiko Wakisaka
- Department of PediatricsNHO Iou National HospitalKanazawaJapan
| | - Hiroyuki Awano
- Research Initiative Center, Organization for Research Initiative and PromotionTottori UniversityYonagoJapan
| | - Michinori Funato
- Department of Pediatric NeurologyNHO Nagara Medical CenterNagaraJapan
| | - Tatsuharu Sato
- Department of PediatricsNagasaki University HospitalNagasakiJapan
| | - Yoshiaki Saito
- Department of PediatricsNational Rehabilitation Center for Children with DisabilitiesItabashiJapan
| | - Hiroto Takada
- Department of NeurologyNHO Aomori National HospitalAomoriJapan
| | - Kazuma Sugie
- Department of NeurologyNara Medical University School of MedicineKashiharaJapan
| | - Michio Kobayashi
- Department of NeurologyNHO Akita National HospitalYurihonjoJapan
| | - Shiro Ozasa
- Department of PediatricsKumamoto University HospitalKumamotoJapan
| | - Tatsuya Fujii
- Department of PediatricsShiga Medical Center for ChildrenMoriyamaJapan
| | - Yoshihiro Maegaki
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of MedicineTottori UniversityYonagoJapan
| | - Hideki Oi
- Department of Clinical Data Science, Clinical Research & Education Promotion Division, National Center of Neurology and PsychiatryKodairaJapan
| | - Hisateru Tachimori
- Department of Information Medicine, National Center of Neurology and PsychiatryNational Institute of NeuroscienceKodairaJapan
- Endowed Course of Health System InnovationKeio University School of MedicineTokyoJapan
| | - Hirofumi Komaki
- Department of Child NeurologyNational Center Hospital, National Center of Neurology and PsychiatryKodairaJapan
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4
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Mukae K, Takenobu H, Endo Y, Haruta M, Shi T, Satoh S, Ohira M, Funato M, Toguchida J, Osafune K, Nakahata T, Kanda H, Kamijo T. Development of an osteosarcoma model with MYCN amplification and TP53 mutation in hiPS cell-derived neural crest cells. Cancer Sci 2023; 114:1898-1911. [PMID: 36661413 PMCID: PMC10154822 DOI: 10.1111/cas.15730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 01/21/2023] Open
Abstract
Mesenchymal stem cell- or osteoblast-derived osteosarcoma is the most common malignant bone tumor. Its highly metastatic malignant phenotypes, which are often associated with a poor prognosis, have been correlated with the modulation of TP53- and cell-cycle-related pathways. MYC, which regulates the transcription of cell-cycle modulating genes, is used as a representative prognostic marker for osteosarcoma. Another member of the MYC oncoprotein family, MYCN, is highly expressed in a subset of osteosarcoma, however its roles in osteosarcoma have not been fully elucidated. Here, we attempted to create an in vitro tumorigenesis model using hiPSC-derived neural crest cells, which are precursors of mesenchymal stem cells, by overexpressing MYCN on a heterozygous TP53 hotspot mutation (c.733G>A; p.G245S) background. MYCN-expressing TP53 mutated transformed clones were isolated by soft agar colony formation, and administered subcutaneously into the periadrenal adipose tissue of immunodeficient mice, resulting in the development of chondroblastic osteosarcoma. MYCN suppression decreased the proliferation of MYCN-induced osteosarcoma cells, suggesting MYCN as a potential target for a subset of osteosarcoma treatment. Further, comprehensive analysis of gene expression and exome sequencing of MYCN-induced clones indicated osteosarcoma-specific molecular features, such as the activation of TGF-β signaling and DNA copy number amplification of GLI1. The model of MYCN-expressing chondroblastic osteosarcoma was developed from hiPSC-derived neural crest cells, providing a useful tool for the development of new tumor models using hiPSC-derived progenitor cells with gene modifications and in vitro transformation.
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Affiliation(s)
- Kyosuke Mukae
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Hisanori Takenobu
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Yuki Endo
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan.,Department of Pediatric Surgery, Graduate School of Medicine, Tohoku University, Miyagi, Japan
| | - Masayuki Haruta
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Tianyuan Shi
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan.,Laboratory of Tumor Molecular Biology, Department of Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Shunpei Satoh
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Miki Ohira
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junya Toguchida
- Department of Fundamental Cell Technology, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | | | - Hiroaki Kanda
- Department of Pathology, Saitama Cancer Center, Saitama, Japan
| | - Takehiko Kamijo
- Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan.,Laboratory of Tumor Molecular Biology, Department of Graduate School of Science and Engineering, Saitama University, Saitama, Japan
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5
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Funato M, Maruta K, Yano M, Kai M, Umezawa Y, Yasuda K, Ohta-Noda E, Gen K. Efficacy of interferential current transcutaneous electrical sensory stimulation through the neck skin for treating dysphagia in children with disabilities: A case series. SAGE Open Med Case Rep 2023; 11:2050313X221149527. [PMID: 36686208 PMCID: PMC9850127 DOI: 10.1177/2050313x221149527] [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: 09/26/2022] [Accepted: 12/19/2022] [Indexed: 01/18/2023] Open
Abstract
Finding a suitable treatment for dysphagia has been challenging and the efficacy of neuromuscular electrical stimulation has been recognized. Moreover, the beneficial effect of interferential current transcutaneous electrical sensory stimulation has recently been described. However, the efficacy of interferential current transcutaneous electrical sensory stimulation in children with disabilities is unknown. Therefore, the aim of this study was to confirm the efficacy of interferential current transcutaneous electrical sensory stimulation in children with disabilities. Four children with disabilities of various types underwent interferential current transcutaneous electrical sensory stimulation once a week. All patients showed improved symptoms after interferential current transcutaneous electrical sensory stimulation treatment. Videoendoscopic examination showed reduced accumulation of secretion in all patients and decreased residual bolus in two. We also felt an increased forcefulness when swallowing in two. In addition, the questionnaire results regarding dysphagia indicated improvements. No significant side effects were observed. The interferential current transcutaneous electrical sensory stimulation treatment may be effective and safe in children with disabilities. The effect of this treatment on swallowing ability needs to be further investigated by studying more cases.
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Affiliation(s)
- Michinori Funato
- Department of Pediatric Neurology,
National Hospital Organization Nagara Medical Center, Gifu, Japan,Michinori Funato, Department of Pediatric
Neurology, National Hospital Organization Nagara Medical Center, 1300-7 Nagara,
Gifu 502-8558, Japan.
| | - Kanako Maruta
- Department of Pediatrics, National
Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Mitsuru Yano
- Department of Pediatrics, National
Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Mitsue Kai
- Department of Rehabilitation, National
Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Yaeko Umezawa
- Department of Rehabilitation, National
Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kunihiko Yasuda
- Department of Pediatric Surgery,
National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Emi Ohta-Noda
- Department of Dentistry for Disability
and Oral Health, Asahi University School of Dentistry, Gifu, Japan
| | - Keika Gen
- Department of Dentistry for Disability
and Oral Health, Asahi University School of Dentistry, Gifu, Japan
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6
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Kasai R, Funato M, Maruta K, Yasuda K, Minatsu H, Ito J, Takahashi K. Immunogenicity of SARS-CoV-2 mRNA intramuscular vaccination in patients with muscular disorders. Front Immunol 2023; 14:1103196. [PMID: 36825020 PMCID: PMC9941142 DOI: 10.3389/fimmu.2023.1103196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 01/23/2023] [Indexed: 02/10/2023] Open
Abstract
Backgrounds Little clinical data is available on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in patients with muscular disorders (MDs). The immunogenicity of SARS-CoV-2 vaccines against MDs, in particular, remains unknown. Thus, this study aimed to confirm the immunogenicity and safety of the SARS-CoV-2 vaccine against MDs. Methods All participants were vaccinated with two doses of mRNA vaccines (BNT162b2, Pfizer-BioNTech). The serum samples were collected from each patient on the day of second dose of vaccination, and then, consecutively, after one month, three months, and six months. Anti-SARS-CoV-2 IgG levels were determined using the Abbott SARS-CoV-2 IgG II Quant assay. Results We evaluated 75 individuals, including 42 patients with MDs and 33 patients with non-muscular disorders (non-MDs). Non-MD patients primarily include those with severe motor and intellectual disabilities. The median age of the patients was 32 years (range 12-64 years). After one and three months following the second immunization, patients with MDs had lower antibody responses. Furthermore, three months following the second immunization, the proportion of high responders among patients with MDs decreased significantly compared to that among patients without MDs (p-value of less than 0.01). No serious adverse events were observed in patients with or without MDs. Conclusion Intensity and latency of antibody response were suppressed in patients with MDs. Although MDs may be a key contributor in predicting the antibody response to SARS-CoV-2 vaccination, SARS-CoV-2 immunization in MDs needs extensive research.
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Affiliation(s)
- Ryousuke Kasai
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Pediatric Neurology, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kanako Maruta
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kunihiko Yasuda
- Department of Pediatric Surgery, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Hiroshi Minatsu
- Department of Pediatric Surgery, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Junji Ito
- Department of Clinical Examination, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kazuhiro Takahashi
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
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7
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Funato M, Uehara T, Okada Y, Kaneko H, Kosaki K. Cohesinopathy presenting with microtia, facial palsy, and hearing loss caused by STAG1 pathogenic variant. Congenit Anom (Kyoto) 2022; 62:82-83. [PMID: 34914139 DOI: 10.1111/cga.12454] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/25/2021] [Accepted: 10/27/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Michinori Funato
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Tomoko Uehara
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Yuki Okada
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Hideo Kaneko
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
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8
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Okada Y, Funato M, Takeda S, Kaneko H. Duchenne muscular dystrophy diagnosis using fibroblast-derived myotube cells. Pediatr Int 2022; 64:e15151. [PMID: 35616164 DOI: 10.1111/ped.15151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/10/2021] [Accepted: 01/17/2022] [Indexed: 01/05/2023]
Affiliation(s)
- Yuki Okada
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan.,Department of Pediatric Medical Care, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hideo Kaneko
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan.,Department of Pediatric Medical Care, Gifu Prefectural General Medical Center, Gifu, Japan
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9
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Yamada M, Funato M, Kondo G, Suzuki H, Uehara T, Takenouchi T, Sakamoto Y, Kosaki K. Noonan syndrome-like phenotype in a patient with heterozygous ERF truncating variant. Congenit Anom (Kyoto) 2021; 61:226-230. [PMID: 34184330 DOI: 10.1111/cga.12435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/01/2021] [Accepted: 06/15/2021] [Indexed: 12/27/2022]
Abstract
Craniosynostosis is caused by abnormalities of multiple signaling pathways, including excessive RAS signaling. Recently, a truncating variant in ETS2 repressor factor (ERF), a negative transcriptional regulator of the RAS pathway, was shown to be associated with craniosynostosis. Here, we report a 10-year-old male patient with a heterozygous nonsense mutation, p.Arg183*, in ERF who exhibited craniosynostosis with Noonan syndrome-like phenotypes. In consideration that loss-of-function variants in ERF would result in excessive RAS signaling and RASopathy phenotypes, we propose that ERF may represent a causative gene for Noonan syndrome. Since preceding studies on ERF mutations dealt with patients who were ascertained because of craniosynostosis, further studies are needed to evaluate whether patients with variants in ERF can present with Noonan syndrome-like features without craniosynostosis.
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Affiliation(s)
- Mamiko Yamada
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Michinori Funato
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Goro Kondo
- Department of Neurosurgery, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Hisato Suzuki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Uehara
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan.,Department of Pediatrics, Central Hospital, Aichi Developmental Disability Center, Aichi, Japan
| | - Toshiki Takenouchi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Yoshiaki Sakamoto
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
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10
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Matsumura T, Takada H, Kobayashi M, Nakajima T, Ogata K, Nakamura A, Funato M, Kuru S, Komai K, Futamura N, Adachi Y, Arahata H, Fukudome T, Ishizaki M, Suwazono S, Aoki M, Matsuura T, Takahashi MP, Sunada Y, Hanayama K, Hashimoto H, Nakamura H. A web-based questionnaire survey on the influence of coronavirus disease-19 on the care of patients with muscular dystrophy. Neuromuscul Disord 2021; 31:839-846. [PMID: 34462178 PMCID: PMC8102088 DOI: 10.1016/j.nmd.2021.04.008] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/09/2021] [Accepted: 04/29/2021] [Indexed: 11/08/2022]
Abstract
To clarify the influence of coronavirus disease-19 (COVID-19) on the care of muscular dystrophy patients, we performed a questionnaire survey that was posted on the internet on May 11, 2020. By the end of July 2020, 542 responses had been collected. Approximately 30% of patients postponed regular consultations, and one-quarter of patients who received consultation more than once a month used telephone consultations. Two of 84 patients with Duchenne muscular dystrophy had reduced their steroid doses. A shortage of ventilator accessories and infection protection equipment occurred following the onset of COVID-19, and this shortage had a serious impact on medical care and infection prevention measures. Reductions in rehabilitation and other services, and avoidance of outings, led to a decrease in exercise and an increase in caregiver burden. Inpatients were restricted from going out and visiting family members. More than 20% of patients reported physical or mental complaints; however, few required treatment. COVID-19 has seriously affected the activities and quality of life of patients with muscular dystrophy. We will continue this survey and analyze the longitudinal changes.
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Affiliation(s)
- Tsuyoshi Matsumura
- Dept. of Neurology, NHO Osaka Toneyama Medical Center, 5-1-1 Toneyama, Toyonaka, Osaka 560-8552, Japan.
| | - Hiroto Takada
- Dept. of Neurology, NHO Aomori Hosp., 155-1 Namioka Megasawa Hirano, Aomori, 038-1331, Japan
| | - Michio Kobayashi
- Dept. of Neurology, NHO Akita Hosp., 3-52 Iwakiuchi Michikawa Idonosawa, Yurihonjo, Akita 018-1393, Japan
| | - Takashi Nakajima
- Dept. of Neurology, NHO Niigata Hosp., 3-52 Akasaka-cho, Kashiwazaki, Niigata 945-8585, Japan
| | - Katsuhisa Ogata
- Dept. of Clinical Research, NHO Higashisaitama Hosp., Kurohama 4147, Hasuda, Saitama 349-0196, Japan
| | - Akinori Nakamura
- Dept. of Clinical Research, NHO Matsumoto Medical Center, 2-20-30 Muraimachi-minami, Matsumoto, Nagano 399-8701, Japan
| | - Michinori Funato
- Dept. of Pediatrics, NHO Nagara Medical Center, 1300-7 Nagara, Gifu, 502-8558, Japan
| | - Satoshi Kuru
- Dept. of Neurology, NHO Suzuka Hosp., 3-2-1 Kasado, Suzuka, Mie 513-8501, Japan
| | - Kiyonobu Komai
- Dept. of Neurology, NHO Iou Hosp., 2-73-1 Iwade-machi, Kanazawa, Ishikawa 920-0171, Japan
| | - Naonobu Futamura
- Dept. of Neurology, NHO Hyogo-Chuo Hosp., 1314 Ohara, Sanda, Hyogo 669-1516, Japan
| | - Yoshiki Adachi
- Dept. of Clinical Research, NHO Matsue Medical Center, 5-8-31 Agenoki, Matsue, Shimane 690-8556, Japan
| | - Hajime Arahata
- Dept. of Neurology, NHO Omuta Hosp., 1044-1 Tachibana, Omuta, Fukuoka 837-0911, Japan
| | - Takayasu Fukudome
- Dept. of Neurology, NHO Nagasaki Kawatana Medical Center, 2005-1 Shimogumigo, Kawatana, Nagasaki 859-3615, Japan
| | - Masatoshi Ishizaki
- Dept. of Neurology, NHO Kumamoto Saishunso Medical Center, 2659 Suya, Goushi, Kumamoto 861-1196, Japan
| | - Shugo Suwazono
- Dept. of Neurology, NHO Okinawa Hosp., 3-20 Ganeko, Ginowan, Okinawa 901-2214, Japan
| | - Masashi Aoki
- Dept. of Neurology, Tohoku Univ. School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Tohru Matsuura
- Dept. of Neurology, Jichi Medical Univ., 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Masanori P Takahashi
- Dept. of Functional Diagnostic Science, Osaka Univ. Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihide Sunada
- Dept. of Neurology, Kawasaki Medical School, 57 Matsushima, Kurashiki, Okayama 701-0192, Japan
| | - Kouzou Hanayama
- Dept of Rehabilitation, Kawasaki Medical School, 57 Matsushima, Kurashiki, Okayama 701-0192, Japan
| | - Hiroya Hashimoto
- Clinical Research Management Center, Nagoya City Univ. Hosp., 1 Kawasumi Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-0001, Japan
| | - Harumasa Nakamura
- TMC, National Center of Neurology, Psychiatry, 4-1-1 Ogawa-higashi, Kodaira, Tokyo 187-0031, Japan
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11
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Matsumura T, Hashimoto H, Sekimizu M, Saito AM, Iwata Y, Asakura M, Kimura K, Tamura T, Funato M, Segawa K, Ogata K, Nakajima T. Study Protocol for a Multicenter, Open-Label, Single-Arm Study of Tranilast for Cardiomyopathy of Muscular Dystrophy. Kurume Med J 2021; 66:121-126. [PMID: 34135201 DOI: 10.2739/kurumemedj.ms662006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Duchenne (DMD) and other forms of muscular dystrophy (MD) are collectively rare and affect approx imately 20 per 100,000 people. The on-going development of exon skipping and other novel therapies for DMD is expected to lead to improvements in motor function prognosis. However, improvements in motor dysfunction with these novel therapies are associated with the risk of increase in cardiac burden. Development of therapies to improve cardiac function, therefore, is an urgent issue. This single-arm, open-label, multicenter study will include 20 patients with MD aged 13 years or older. Tranilast, a transient receptor potential cation channel subfamily V member 2 (TRPV2) inhibitor, will be administered orally for a period of 28 weeks at a dose of 300 mg/day divided into three daily doses. If consent to continue administration is obtained at 28 weeks, the drug will be administered for an additional 116 weeks. The primary outcome will be the change in brain natriuretic peptide (BNP) at 6 months after the start of administration compared to baseline. Tranilast is an anti-allergy agent that was developed in Japan. It has been used in a large number of clinical cases, including pediatric cases, and has been shown to be safe. We expect this study to provide basic data for developing new treatment method in cardiomyopathy/skeletal myopathy using TRPV2 inhibitors. Moreover, such therapies may also be effective in treating general heart failure without MD. Therefore, if the effectiveness of TRPV2 inhibitors could be confirmed in this study, great social and economic benefits could be achieved.
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Affiliation(s)
- Tsuyoshi Matsumura
- Department of Neurology, National Hospital Organization Osaka Toneyama Medical Center
| | | | - Masahiro Sekimizu
- Clinical Research Center.,Department of Pediatrics, National Hospital Organization Nagoya Medical Center
| | | | - Yuko Iwata
- Department of Clinical Research and Development, National Cerebral and Cardiovascular Center
| | - Masanori Asakura
- Department of Internal Medicine, Cardiovascular Division, Hyogo College of Medicine
| | - Koichi Kimura
- Department of General Medicine, The Institute of Medical Science, The University of Tokyo
| | - Takuhisa Tamura
- Department of Neurology, National Hospital Organization Higashisaitama National Hospital
| | | | - Kazuhiko Segawa
- Department of Cardiology, National Center Hospital, National Center of Neurology and Psychiatry
| | - Katsuhisa Ogata
- Department of Neurology, National Hospital Organization Higashisaitama National Hospital
| | - Takashi Nakajima
- Department of Clinical research, Department of Neurology, Niigata National Hospital
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12
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Funato M, Tsunematsu Y, Yamazaki F, Tamura C, Kumamoto T, Takagi M, Kato S, Sugimura H, Tamura K. Characteristics of Li-Fraumeni Syndrome in Japan; A Review Study by the Special Committee of JSHT. Cancer Sci 2021; 112:2821-2834. [PMID: 33932062 PMCID: PMC8253286 DOI: 10.1111/cas.14919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/14/2021] [Accepted: 03/23/2021] [Indexed: 01/25/2023] Open
Abstract
Li-Fraumeni syndrome (LFS) is a hereditary cancer predisposition syndrome, and the majority of patients with LFS have been identified with germline variants in the p53 tumor suppressor (TP53) gene. In the past three decades, considerable case reports of TP53 germline variants have been published in Japan. To the best of our knowledge, there have been no large-scale studies of Japanese patients with LFS. In this study, we aimed to identify Japanese patients with TP53 germline variants and to reveal the characteristics of LFS in Japan. We collected reported cases by reviewing the medical literature and cases diagnosed at the institutions of the authors. We identified 68 individuals from 48 families with TP53 germline pathogenic or likely pathogenic variants. Of the 48 families, 35 (72.9%) had missense variants, most of which were located within the DNA-binding loop. A total of 128 tumors were identified in the 68 affected individuals. The 128 tumor sites were as follows: breast, 25; bones, 16; brain, 12; hematological, 11; soft tissues, 10; stomach, 10; lung, 10; colorectum, 10; adrenal gland, 9; liver, 4; and others, 11. Unique phenotype patterns of LFS were shown in Japan in comparison to those in a large national LFS cohort study in France. Above all, a higher frequency of patients with stomach cancer was observed in Japanese TP53 germline variant carriers. These results may provide useful information for the clinical management of LFS in Japan.
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Affiliation(s)
- Michinori Funato
- Department of Clinical ResearchNational Hospital OrganizationNagara Medical CenterGifuJapan
| | - Yukiko Tsunematsu
- Department of PediatricsJuntendo University School of MedicineTokyoJapan
| | - Fumito Yamazaki
- Department of Clinical GenomicsNational Cancer Center Research InstituteTokyoJapan
| | - Chieko Tamura
- Department of PediatricsJuntendo University School of MedicineTokyoJapan
- Medical Information & Genetic Counseling DivisionFMC Tokyo ClinicTokyoJapan
| | - Tadashi Kumamoto
- Department of Pediatric OncologyNational Cancer Center HospitalTokyoJapan
| | - Masatoshi Takagi
- Department of Pediatrics and Developmental BiologyGraduate SchoolTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Shunsuke Kato
- Department of Clinical OncologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Haruhiko Sugimura
- Department of Tumor PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Kazuo Tamura
- Division of Genetic MedicineMaster of ScienceGraduate School of Science and Engineering ResearchKindai UniversityHigashiosakaJapan
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13
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Otsuka Y, Morita H, Kimura Y, Mori R, Miyazaki K, Shimokawa Y, Tatabayashi K, Funato M, Kaneko H. Threshold dose of cow's milk in sensitization to casein higher than those of casein and β-lactoglobulin in children with cow's milk allergy. Asian Pac J Allergy Immunol 2021. [PMID: 33865301 DOI: 10.12932/ap-220720-0927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Recent treatment for food allergies involves the intake of allergy-causing foods at doses lower than the threshold dose determined by the oral food challenge (OFC). For a more successful treatment, it is necessary to identify a biomarker to establish safer doses of allergens in foods consumed at home. OBJECTIVE In this study, we aim to investigate whether the pattern of sensitization to cow's milk (CM) is related to the threshold dose of CM. METHODS Fifty patients with sensitization to casein (casein-specific IgE titer ≥ 0.7 UA/ml) and who have undergone the CM OFC test from July 2013 to July 2015 were enrolled. They were examined for the presence or absence of sensitization to β-lactoglobulin (BLG) (BLG-specific IgE ≥ 0.7 UA/ml). They were divided into two groups, namely, the only-casein-specific IgE-positive (C) group, and both casein- and BLG-specific IgE-positive (C + B) group. RESULTS The C group had 26 patients and the C + B group had 24. Both the CM- and casein-specific IgE titers were higher in the C + B group than in the C group. The positivity rates determined from OFC test results were 53.8 and 87.5%, and the threshold doses of CM were 88.7 and 31.1 ml in the C and C + B groups, respectively. In patients with low casein-specific IgE titers (≤ 10 UA/ml), the C + B group showed a significantly lower threshold dose of CM than the C group. CONCLUSIONS Our results suggest that children with CM allergy sensitized to casein alone have a higher threshold dose than those sensitized to both casein and BLG.
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Affiliation(s)
- Yukiko Otsuka
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Hideyuki Morita
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Yuka Kimura
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Rikako Mori
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Kumiko Miyazaki
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Yuko Shimokawa
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Koji Tatabayashi
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Michinori Funato
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
| | - Hideo Kaneko
- Division of Pediatrics, National Hospital Organization, Nagara Medical center, Gifu, Japan
- Department of Pediatric Medical Care, Gifu Prefectural General Medical Center, Gifu, Japan
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14
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Komaki H, Takeshima Y, Matsumura T, Ozasa S, Funato M, Takeshita E, Iwata Y, Yajima H, Egawa Y, Toramoto T, Tajima M, Takeda S. Viltolarsen in Japanese Duchenne muscular dystrophy patients: A phase 1/2 study. Ann Clin Transl Neurol 2020; 7:2393-2408. [PMID: 33285037 PMCID: PMC7732240 DOI: 10.1002/acn3.51235] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 01/14/2023] Open
Abstract
Objective The novel morpholino antisense oligonucleotide viltolarsen targets exon 53 of the dystrophin gene, and could be an effective treatment for patients with Duchenne muscular dystrophy (DMD). We investigated viltolarsen’s ability to induce dystrophin expression and examined its safety in DMD patients. Methods In this open‐label, multicenter, parallel‐group, phase 1/2, exploratory study, 16 ambulant and nonambulant males aged 5–12 years with DMD received viltolarsen 40 or 80 mg/kg/week via intravenous infusion for 24 weeks. Primary endpoints were dystrophin expression and exon 53 skipping levels. Results In western blot analysis, mean changes in dystrophin expression (% normal) from baseline to Weeks 12 and 24 were − 1.21 (P = 0.5136) and 1.46 (P = 0.1636), respectively, in the 40 mg/kg group, and 0.76 (P = 0.2367) and 4.81 (P = 0.0536), respectively, in the 80 mg/kg group. The increase in mean dystrophin level at Weeks 12 and 24 was significant in the 80 mg/kg group (2.78%; P = 0.0364). Patients receiving 80 mg/kg showed a higher mean exon 53 skipping level (42.4%) than those receiving 40 mg/kg (21.8%). All adverse events were judged to be mild or moderate in intensity and none led to study discontinuation. Interpretation Treatment with viltolarsen 40 or 80 mg/kg elicited an increasing trend in dystrophin expression and exon 53 skipping levels, and was safe and well tolerated. The decline in motor function appeared less marked in patients with higher dystrophin levels; this may warrant further investigation. This study supports the potential clinical benefit of viltolarsen.
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Affiliation(s)
- Hirofumi Komaki
- Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yasuhiro Takeshima
- Department of Pediatrics, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Tsuyoshi Matsumura
- Department of Neurology, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Shiro Ozasa
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Kumamoto, Japan
| | - Michinori Funato
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Eri Takeshita
- Department of Child Neurology, National Center of Neurology and Psychiatry, National Center Hospital, Kodaira, Tokyo, Japan
| | - Yasuyuki Iwata
- Department of Rehabilitation, National Center of Neurology and Psychiatry, National Center Hospital, Kodaira, Tokyo, Japan
| | - Hiroyuki Yajima
- Department of Rehabilitation, National Center of Neurology and Psychiatry, National Center Hospital, Kodaira, Tokyo, Japan
| | - Yoichi Egawa
- Global Clinical Development Department, Nippon Shinyaku Co., Ltd., Kyoto, Kyoto, Japan
| | - Takuya Toramoto
- Global Clinical Development Department, Nippon Shinyaku Co., Ltd., Kyoto, Kyoto, Japan
| | - Masaya Tajima
- Global Clinical Development Department, Nippon Shinyaku Co., Ltd., Kyoto, Kyoto, Japan
| | - Shinichi Takeda
- National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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15
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Inagaki S, Kawase K, Funato M, Seki J, Kawase C, Ohuchi K, Kameyama T, Ando S, Sato A, Morozumi W, Nakamura S, Shimazawa M, Iejima D, Iwata T, Yamamoto T, Kaneko H, Hara H. Effect of Timolol on Optineurin Aggregation in Transformed Induced Pluripotent Stem Cells Derived From Patient With Familial Glaucoma. ACTA ACUST UNITED AC 2020; 59:2293-2304. [DOI: 10.1167/iovs.17-22975] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuhide Kawase
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Tsubasa Kameyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Wataru Morozumi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Daisuke Iejima
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Takeshi Iwata
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Tetsuya Yamamoto
- Department of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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16
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Kafar A, Ishii R, Gibasiewicz K, Matsuda Y, Stanczyk S, Schiavon D, Grzanka S, Tano M, Sakaki A, Suski T, Perlin P, Funato M, Kawakami Y. Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes. Opt Express 2020; 28:22524-22539. [PMID: 32752512 DOI: 10.1364/oe.394580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
We report a thorough study of InGaN quantum wells spatially modified by varying the local misorientation of the GaN substrate prior to the epitaxial growth of the structure. More than 25 nm shift of emission wavelength was obtained, which is attributed to indium content changes in the quantum wells. Such an active region is promising for broadening of the emission spectrum of (In,Al,Ga)N superluminescent diodes. We observed that the light intensity changes with misorientation, being stable around 0.5° to 2° and decreasing above 2°. This relation can be used as a base for future device designing.
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17
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Komaki H, Maegaki Y, Matsumura T, Shiraishi K, Awano H, Nakamura A, Kinoshita S, Ogata K, Ishigaki K, Saitoh S, Funato M, Kuru S, Nakayama T, Iwata Y, Yajima H, Takeda S. Early phase 2 trial of TAS-205 in patients with Duchenne muscular dystrophy. Ann Clin Transl Neurol 2020; 7:181-190. [PMID: 31957953 PMCID: PMC7034509 DOI: 10.1002/acn3.50978] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
Objective Duchenne muscular dystrophy (DMD) is a progressive muscular disease characterized by chronic cycles of inflammatory and necrotic processes. Prostaglandin D2 (PGD2) is produced by hematopoietic PGD synthase (HPGDS), which is pathologically implicated in muscle necrosis. This randomized, double‐blind, placebo‐controlled early phase 2 study (NCT02752048) aimed to assess the efficacy and safety of the novel selective HPGDS inhibitor, TAS‐205, with exploratory measures in male DMD patients aged ≥5 years. Methods Patients were randomized 1:1:1 to receive low‐dose TAS‐205 (6.67–13.33 mg/kg/dose), high‐dose TAS‐205 (13.33–26.67 mg/kg/dose), or placebo. The primary endpoint was the change from baseline in a 6‐minute walk distance (6MWD) at Week 24. Results Thirty‐six patients were enrolled, of whom 35 patients were analysed for safety. The mean (standard error) changes from baseline to Week 24 in 6MWD were −17.0 (17.6) m in the placebo group (n = 10), −3.5 (20.3) m in the TAS‐205 low‐dose group (n = 11), and −7.5 (11.2) m in the TAS‐205 high‐dose group (n = 11). The mean (95% confidence interval) difference from the placebo group was 13.5 (−43.3 to 70.2) m in the TAS‐205 low‐dose group and 9.5 (−33.3 to 52.4) m in the TAS‐205 high‐dose group. No obvious differences were observed in the incidences of adverse events between treatment groups. No adverse drug reactions specific to TAS‐205 treatment were observed. Interpretation The HPGDS inhibitor TAS‐205 showed a favorable safety profile in DMD patients. Further research is required to examine the effectiveness of TAS‐205 in a larger trial.
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Affiliation(s)
- Hirofumi Komaki
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yoshihiro Maegaki
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Tsuyoshi Matsumura
- Department of Neurology, National Hospital Organization Osaka Toneyama Medical Center, Osaka, Japan
| | - Kazuhiro Shiraishi
- Department of Pediatrics, National Hospital Organization Utano National Hospital, Kyoto, Japan
| | - Hiroyuki Awano
- Department of Pediatrics, Kobe University Graduate School of Medicine, Hyogo, Japan
| | - Akinori Nakamura
- Third Department of Medicine, Shinshu University School of Medicine, Nagano, Japan
| | - Satoru Kinoshita
- Department of Pediatrics, National Hospital Organization Niigata National Hospital, Niigata, Japan
| | - Katsuhisa Ogata
- Department of Neurology, National Hospital Organization Higashisaitama National Hospital, Saitama, Japan
| | - Keiko Ishigaki
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Michinori Funato
- Department of Pediatrics, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Satoshi Kuru
- Department of Neurology, National Hospital Organization Suzuka National Hospital, Mie, Japan
| | - Takahiro Nakayama
- Department of Neurology, Division of Neuromuscular diseases, Yokohama Rosai Hospital, Kanagawa, Japan
| | - Yasuyuki Iwata
- Department of Rehabilitation, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hiroyuki Yajima
- Department of Rehabilitation, National Center of Neurology and Psychiatry, Tokyo, Japan
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18
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Ando S, Funato M, Ohuchi K, Inagaki S, Sato A, Seki J, Kawase C, Saito T, Nishio H, Nakamura S, Shimazawa M, Kaneko H, Hara H. The Protective Effects of Levetiracetam on a Human iPSCs-Derived Spinal Muscular Atrophy Model. Neurochem Res 2019; 44:1773-1779. [PMID: 31102025 DOI: 10.1007/s11064-019-02814-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 04/04/2019] [Accepted: 05/09/2019] [Indexed: 12/30/2022]
Abstract
Spinal muscular atrophy (SMA) is an inherited disease characterized by progressive motor neuron death and subsequent muscle weakness and is caused by deletion or mutation of survival motor neuron (SMN) 1 gene. Protecting spinal motor neuron is an effective clinical strategy for SMA. The purpose of this study was to investigate the potential effect of an anti-epileptic drug levetiracetam on SMA. In the present study, we used differentiated spinal motor neurons (MNs) from SMA patient-derived induced pluripotent stem cells (SMA-iPSCs) to investigate the effect of levetiracetam. Levetiracetam promoted neurite elongation in SMA-iPSCs-MNs. TUNEL-positive spinal motor neurons were significantly reduced by levetiracetam in SMA-iPSCs-MNs. In addition, the expression level of cleaved-caspase 3 was decreased by levetiracetam in SMA-iPSCs-MNs. Furthermore, levetiracetam improved impaired mitochondrial function in SMA-iPSCs-MNs. On the other hand, levetiracetam did not affect the expression level of SMN protein in SMA-iPSCs-MNs. These findings indicate that levetiracetam has a neuroprotective effect for SMA.
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Affiliation(s)
- Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Toshio Saito
- Division of Child Neurology, Department of Neurology, National Hospital Organization, Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Hisahide Nishio
- Department of Occupational Therapy, Faculty of Rehabilitation, Kobe Gakuin University, Kobe, Hyogo, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan.
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Kameyama T, Ohuchi K, Funato M, Ando S, Inagaki S, Sato A, Seki J, Kawase C, Tsuruma K, Nishino I, Nakamura S, Shimazawa M, Saito T, Takeda S, Kaneko H, Hara H. Efficacy of Prednisolone in Generated Myotubes Derived From Fibroblasts of Duchenne Muscular Dystrophy Patients. Front Pharmacol 2018; 9:1402. [PMID: 30559667 PMCID: PMC6287205 DOI: 10.3389/fphar.2018.01402] [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: 06/26/2018] [Accepted: 11/15/2018] [Indexed: 12/27/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a recessive X-linked form of muscular dystrophy characterized by progressive muscle degeneration. This disease is caused by the mutation or deletion of the dystrophin gene. Currently, there are no effective treatments and glucocorticoid administration is a standard care for DMD. However, the mechanism underlying prednisolone effects, which leads to increased walking, as well as decreased muscle wastage, is poorly understood. Our purpose in this study is to investigate the mechanisms of the efficacy of prednisolone for this disease. We converted fibroblasts of normal human cell line and a DMD patient sample to myotubes by MyoD transduction using a retroviral vector. In myotubes from the MyoD-transduced fibroblasts of the DMD patient, the myotube area was decreased and its apoptosis was increased. Furthermore, we confirmed that prednisolone could rescue these pathologies. Prednisolone increased the expression of not utrophin but laminin by down-regulation of MMP-2 mRNA. These results suggest that the up-regulation of laminin may be one of the mechanisms of the efficacy of prednisolone for DMD.
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Affiliation(s)
- Tsubasa Kameyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Satoshi Inagaki
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Arisu Sato
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuhiro Tsuruma
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Ichizo Nishino
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Takashi Saito
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
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20
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Takeuchi H, Inagaki S, Morozumi W, Nakano Y, Inoue Y, Kuse Y, Mizoguchi T, Nakamura S, Funato M, Kaneko H, Hara H, Shimazawa M. VGF nerve growth factor inducible is involved in retinal ganglion cells death induced by optic nerve crush. Sci Rep 2018; 8:16443. [PMID: 30401804 PMCID: PMC6219571 DOI: 10.1038/s41598-018-34585-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/16/2018] [Indexed: 12/11/2022] Open
Abstract
VGF nerve growth factor inducible (VGF) is a polypeptide that is induced by neurotrophic factors and is involved in neurite growth and neuroprotection. The mRNA of the Vgf gene has been detected in the adult rat retina, however the roles played by VGF in the retina are still undetermined. Thus, the purpose of this study was to determine the effects of VGF on the retinal ganglion cells (RGCs) of mice in the optic nerve crush (ONC) model, rat-derived primary cultured RGCs and human induced pluripotent stem cells (iPSCs)-derived RGCs. The mRNA and protein of Vgf were upregulated after the ONC. Immunostaining showed that the VGF was located in glial cells including Müller glia and astrocytes but not in the retinal neurons and their axons. AQEE-30, a VGF peptide, suppressed the loss of RGCs induced by the ONC, and it increased survival rat-derived RGCs and promoted the outgrowth of neurites of rat and human iPSCs derived RGCs in vitro. These findings indicate that VGF plays important roles in neuronal degeneration and has protective effects against the ONC on RGCs. Thus, VGF should be considered as a treatment of RGCs degeneration.
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Affiliation(s)
- Hiroto Takeuchi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Satoshi Inagaki
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan.,Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Wataru Morozumi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yukimichi Nakano
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Inoue
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yoshiki Kuse
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Takahiro Mizoguchi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Shinsuke Nakamura
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Hideaki Hara
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, Gifu, Japan.
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Ogata K, Kosuga M, Takeshita E, Matsumura T, Ishigaki K, Ozasa S, Arahata H, Sugie K, Takahashi T, Kuru S, Kobayashi M, Takada H, Hattori A, Takahashi M, Tanaka N, Kimura T, Funato M, Okuyama T, Komaki H. METABOLIC MYOPATHIES II. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.396] [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: 11/28/2022]
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Uehara T, Ishige T, Hattori S, Yoshihashi H, Funato M, Yamaguchi Y, Takenouchi T, Kosaki K. Three patients with DeSanto-Shinawi syndrome: Further phenotypic delineation. Am J Med Genet A 2018; 176:1335-1340. [PMID: 29663678 DOI: 10.1002/ajmg.a.38703] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 08/18/2017] [Revised: 02/08/2018] [Accepted: 03/12/2018] [Indexed: 12/13/2022]
Abstract
Somatic truncating variants of the WAC gene have been observed in patients with hematologic malignancies. Furthermore, de novo heterozygous constitutional pathogenic variants of WAC have recently been shown to cause a syndromic form of intellectual disability, DeSanto-Shinawi syndrome. It is unknown whether the constitutional pathogenic variants observed in the intellectual disability syndrome overlap with the somatic pathogenic variants observed in hematologic abnormalities. Herein, we report three patients with constitutional truncating variants of WAC in an attempt to address the above questions. All three of the patients had mild to moderate intellectual disability and dysmorphic features. We then reviewed the phenotypic features of 19 patients with DeSanto-Shinawi syndrome, including the three currently reported ones: eight and seven patients showed a bulbous nasal tip and short fingers, respectively. As for the pathogenetic mechanism, we demonstrated that the expression level of the mRNA derived from the wildtype allele was higher than that derived from the mutated allele, demonstrating nonsense-mediated mRNA decay. This observation makes a haploinsufficiency mechanism likely. Reviews of the constitutional and somatic pathogenic variants observed in patients with hematologic malignancies showed a significant overlap of the two. To date, no patients with DeSanto-Shinawi syndrome have been reported to have developed hematologic abnormalities, except for one of the three patients reported herein who developed leukopenia and thrombocytopenia at the age of 19 years. Larger data sets are required to determine hematologic prognosis of patients with constitutional WAC variants.
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Affiliation(s)
- Tomoko Uehara
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Ishige
- Department of Pediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Shigeto Hattori
- Department of Pediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroshi Yoshihashi
- Department of Medical Genetics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Michinori Funato
- Department of Pediatrics, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Yu Yamaguchi
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Toshiki Takenouchi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
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Saito T, Ogata K, Takahashi T, Kobayashi M, Takada H, Kuru S, Mikata T, Matsumura T, Arahata H, Fukudome T, Funato M, Yonemoto N, Kimura E. Study on factor related to general condition and prognosis of patients with duchenne muscular dystrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Hosokawa Y, Toyoda T, Fukui K, Baden MY, Funato M, Kondo Y, Sudo T, Iwahashi H, Kishida M, Okada C, Watanabe A, Asaka I, Osafune K, Imagawa A, Shimomura I. Insulin-producing cells derived from 'induced pluripotent stem cells' of patients with fulminant type 1 diabetes: Vulnerability to cytokine insults and increased expression of apoptosis-related genes. J Diabetes Investig 2017; 9:481-493. [PMID: 28796422 PMCID: PMC5934265 DOI: 10.1111/jdi.12727] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 07/24/2017] [Accepted: 08/06/2017] [Indexed: 01/28/2023] Open
Abstract
AIMS/INTRODUCTION The present study was carried out to generate induced pluripotent stem cells (iPSCs) from patients with fulminant type 1 diabetes, and evaluate the cytokine-induced apoptotic reactions of β-like insulin-producing cells differentiated from the iPSCs. MATERIALS AND METHODS iPSCs were generated from fibroblasts of patients with fulminant type 1 diabetes by inducing six reprogramming factors. Insulin-producing cells were differentiated from the iPSCs in vitro. The proportion of cleaved caspase-3-positive or terminal deoxynucleotidyl transferase 2'-deoxyuridine, 5'-triphosphate nick end labeling-positive cells among insulin (INS)-positive cells derived from fulminant type 1 diabetes iPSC and control human iPSC lines was evaluated under treatment with tumor necrosis factor-α, interleukin-1β and interferon-γ. Ribonucleic acid sequencing was carried out to compare gene expressions in INS-positive cells derived from fulminant type 1 diabetes iPSC and control human iPSC lines. RESULTS Two iPSC clones were established from each of three patients with fulminant type 1 diabetes. The differentiation of insulin-producing cells from fulminant type 1 diabetes iPSC was confirmed by immunofluorescence analysis and KCl-induced C-peptide secretion. After treatment with pro-inflammatory cytokines, these INS-positive cells showed higher expression of cleaved caspase-3 than those derived from control human iPSCs. Altered expression levels of several apoptosis-related genes were observed in INS-positive cells derived from the fulminant type 1 diabetes iPSCs by ribonucleic acid sequencing. CONCLUSIONS We generated iPSCs from patients with fulminant type 1 diabetes and differentiated them into insulin-producing cells. This in vitro disease model can be used to elucidate the disease mechanisms of fulminant type 1 diabetes.
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Affiliation(s)
- Yoshiya Hosokawa
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
| | - Kenji Fukui
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Megu Yamaguchi Baden
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Michinori Funato
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
- Department of Clinical ResearchNational Hospital OrganizationNagara Medical CenterGifuJapan
| | - Yasushi Kondo
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
- Department of Diabetes, Endocrinology and NutritionKyoto UniversityKyotoJapan
| | - Tomomi Sudo
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
| | - Hiromi Iwahashi
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
- Department of Diabetes Care MedicineOsaka University Graduate School of MedicineOsakaJapan
| | - Marina Kishida
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
- Japan Agency for Medical Research and Development (AMED)‐CRESTJapan
| | - Chihiro Okada
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
- Mitsubishi Space SoftwareTokyoJapan
| | - Akira Watanabe
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
- Japan Agency for Medical Research and Development (AMED)‐CRESTJapan
| | - Isao Asaka
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA)Kyoto UniversityKyotoJapan
| | - Akihisa Imagawa
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
- Department of Internal Medicine (I)Osaka Medical CollegeOsakaJapan
| | - Iichiro Shimomura
- Department of Metabolic MedicineOsaka University Graduate School of MedicineOsakaJapan
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25
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Kondo Y, Toyoda T, Ito R, Funato M, Hosokawa Y, Matsui S, Sudo T, Nakamura M, Okada C, Zhuang X, Watanabe A, Ohta A, Inagaki N, Osafune K. Identification of a small molecule that facilitates the differentiation of human iPSCs/ESCs and mouse embryonic pancreatic explants into pancreatic endocrine cells. Diabetologia 2017; 60:1454-1466. [PMID: 28534195 DOI: 10.1007/s00125-017-4302-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 12/14/2016] [Accepted: 04/12/2017] [Indexed: 12/11/2022]
Abstract
AIMS/HYPOTHESIS Pancreatic beta-like cells generated from human induced pluripotent stem cells (hiPSCs) or human embryonic stem cells (hESCs) offer an appealing donor tissue source. However, differentiation protocols that mainly use growth factors are costly. Therefore, in this study, we aimed to establish efficient differentiation protocols to change hiPSCs/hESCs to insulin (INS)+ cells using novel small-molecule inducers. METHODS We screened small molecules that increased the induction rate of INS+ cells from hESC-derived pancreatic and duodenal homeobox 1 (PDX1)+ pancreatic progenitor cells. The differentiation protocol to generate INS+ cells from hiPSCs/hESCs was optimised using hit compounds, and INS+ cells induced with the compounds were characterised for their in vitro and in vivo functions. The inducing activity of the hit compounds was also examined using mouse embryonic pancreatic tissues in an explant culture system. Finally, RNA sequencing analyses were performed on the INS+ cells to elucidate the mechanisms of action by which the hit compounds induced pancreatic endocrine differentiation. RESULTS One hit compound, sodium cromoglicate (SCG), was identified out of approximately 1250 small molecules screened. When SCG was combined with a previously described protocol, the induction rate of INS+ cells increased from a mean ± SD of 5.9 ± 1.5% (n = 3) to 16.5 ± 2.1% (n = 3). SCG induced neurogenin 3-positive cells at a mean ± SD of 32.6 ± 4.6% (n = 3) compared with 14.2 ± 3.6% (n = 3) for control treatment without SCG, resulting in an increased generation of endocrine cells including insulin-producing cells. Similar induction by SCG was confirmed using mouse embryonic pancreatic explants. We also confirmed that the mechanisms of action by which SCG induced pancreatic endocrine differentiation included the inhibition of bone morphogenetic protein 4 signalling. CONCLUSIONS/INTERPRETATION SCG improves the generation of pancreatic endocrine cells from multiple hiPSC/hESC lines and mouse embryonic pancreatic explants by facilitating the differentiation of endocrine precursors. This discovery will contribute to elucidating the mechanisms of pancreatic endocrine development and facilitate cost-effective generation of INS+ cells from hiPSCs/hESCs. DATA AVAILABILITY The RNA sequencing data generated during the current study are available in the Gene Expression Omnibus ( www.ncbi.nlm.nih.gov/geo ) with series accession number GSE89973.
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Affiliation(s)
- Yasushi Kondo
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ryo Ito
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Michinori Funato
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yoshiya Hosokawa
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Satoshi Matsui
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tomomi Sudo
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masahiro Nakamura
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Chihiro Okada
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Mitsubishi Space Software Co., Ltd, 5-4-36, Tsukaguchi-honmachi, Amagasaki, Hyogo, Japan
| | - Xiaotong Zhuang
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Akira Watanabe
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akira Ohta
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Nobuya Inagaki
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
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26
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Kaneko H, Izumi R, Oda H, Ohara O, Sameshima K, Ohnishi H, Fukao T, Funato M. Nationwide survey of Baller‑Gerold syndrome in Japanese population. Mol Med Rep 2017; 15:3222-3224. [PMID: 28358413 DOI: 10.3892/mmr.2017.6408] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 03/10/2017] [Indexed: 11/05/2022] Open
Abstract
Baller-Gerold syndrome (BGS) is a rare autosomal genetic disorder characterized by radial aplasia/hypoplasia and craniosynostosis. The causative gene for BGS encodes RECQL4, which belongs to the RecQ helicase family. To understand BGS patients in Japan, a nationwide survey was conducted, which identified 2 families and 3 patients affected by the syndrome. All the three patients showed radial defects and craniosynostosis. In one patient who showed a dislocated joint of the hip and flexion contracture of both the elbow joints and wrists at birth, a homozygous large deletion in the RECQL4 gene was identified. This is the first reported case of BGS in Japan caused by RECQL4 gene mutation.
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Affiliation(s)
- Hideo Kaneko
- Department of Clinical Research, National Hospital Organization Nagara Medical Center, Gifu 502‑8558, Japan
| | - Rie Izumi
- Niigata Prefecture Hamagumi Medical Rehabilitation Center for Children, Niigata 951‑8121, Japan
| | - Hirotsugu Oda
- Laboratory for Integrative Genomics, RIKEN Center for Integrative Medical Sciences (RIKEN‑IMS), Yokohama, Kanagawa 230‑0045, Japan
| | - Osamu Ohara
- Department of Technology Development, Kazusa DNA Research Institute, Kisarazu, Chiba 292‑0818, Japan
| | - Kiyoko Sameshima
- Division of Medical Genetics, Gunma Children's Medical Center, Shibukawa, Gunma 377‑8577, Japan
| | - Hidenori Ohnishi
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu 501‑1194, Japan
| | - Toshiyuki Fukao
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu 501‑1194, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization Nagara Medical Center, Gifu 502‑8558, Japan
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27
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Saito T, Ogata K, Kobayashi M, Takahashi T, Kuru S, Matsumura T, Takada H, Mikata T, Funato M, Arahata H, Fukudome T, Yonemoto N, Kimura E. Life prognostic factor of patients with Duchenne muscular dystrophy. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.134] [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: 11/17/2022]
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28
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Ohuchi K, Funato M, Kato Z, Seki J, Kawase C, Tamai Y, Ono Y, Nagahara Y, Noda Y, Kameyama T, Ando S, Tsuruma K, Shimazawa M, Hara H, Kaneko H. Established Stem Cell Model of Spinal Muscular Atrophy Is Applicable in the Evaluation of the Efficacy of Thyrotropin-Releasing Hormone Analog. Stem Cells Transl Med 2015; 5:152-63. [PMID: 26683872 DOI: 10.5966/sctm.2015-0059] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/07/2015] [Indexed: 11/16/2022] Open
Abstract
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder characterized by the degeneration of spinal motor neurons. This disease is mainly caused by mutation or deletion of the survival motor neuron 1 (SMN1) gene. Currently, no effective treatment is available, and only symptomatic treatment can be provided. Our purpose in the present study was to establish a human SMA-derived induced pluripotent stem cell (SMA-iPSC) disease model and assay a therapeutic drug in preparation for the development of a novel treatment of SMA. We generated iPSCs from the skin fibroblasts of a patient with SMA and confirmed that they were pluripotent and undifferentiated. The neural differentiation of SMA-iPSCs shortened the dendrite and axon length and increased the apoptosis of the spinal motor neurons. In addition, we found activated astrocytes in differentiated SMA-iPSCs. Using this model, we confirmed that treatment with the thyrotropin-releasing hormone (TRH) analog, 5-oxo-l-prolyl-l-histidyl-l-prolinamide, which had marginal effects in clinical trials, increases the SMN protein level. This increase was mediated through the transcriptional activation of the SMN2 gene and inhibition of glycogen synthase kinase-3β activity. Finally, the TRH analog treatment resulted in dendrite and axon development of spinal motor neurons in differentiated SMA-iPSCs. These results suggest that this human in vitro disease model stimulates SMA pathology and reveal the potential efficacy of TRH analog treatment for SMA. Therefore, we can screen novel therapeutic drugs such as TRH for SMA easily and effectively using the human SMA-iPSC model. Significance: Platelet-derived growth factor (PDGF) has recently been reported to produce the greatest increase in survival motor neuron protein levels by inhibiting glycogen synthase kinase (GSK)-3β; however, motor neurons lack PDGF receptors. A human in vitro spinal muscular atrophy-derived induced pluripotent stem cell model was established, which showed that the thyrotropin releasing hormone (TRH) analog promoted transcriptional activation of the SMN2 gene and inhibition of GSK-3β activity, resulting in the increase and stabilization of the SMN protein and axon elongation of spinal motor neurons. These results reveal the potential efficacy of TRH analog treatment for SMA.
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Affiliation(s)
- Kazuki Ohuchi
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Michinori Funato
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Zenichiro Kato
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Junko Seki
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Chizuru Kawase
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Yuya Tamai
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Yoko Ono
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Nagahara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Yasuhiro Noda
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Tsubasa Kameyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Shiori Ando
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
| | - Kazuhiro Tsuruma
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan
| | - Hideo Kaneko
- Department of Clinical Research, National Hospital Organization, Nagara Medical Center, Gifu, Japan
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Toyoda T, Mae SI, Tanaka H, Kondo Y, Funato M, Hosokawa Y, Sudo T, Kawaguchi Y, Osafune K. Cell aggregation optimizes the differentiation of human ESCs and iPSCs into pancreatic bud-like progenitor cells. Stem Cell Res 2015; 14:185-97. [DOI: 10.1016/j.scr.2015.01.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 12/28/2014] [Accepted: 01/19/2015] [Indexed: 01/22/2023] Open
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Kubota K, Ozeki M, Hori T, Kanda K, Funato M, Asano T, Fukao T, Kondo N. Facial palsy as an unusual presenting symptom associated with acute myeloid leukemia. Pediatr Int 2014; 56:e37-40. [PMID: 25252069 DOI: 10.1111/ped.12384] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 10/22/2013] [Revised: 02/07/2014] [Accepted: 03/24/2014] [Indexed: 11/29/2022]
Abstract
Extramedullary infiltration is common in acute myeloid leukemia (AML) patients. Although AML can cause neurological symptoms, especially when associated with extramedullary infiltration, a presenting manifestation of facial palsy is rare. We report on a 1-year-old boy who developed right facial palsy. Detailed examination led to a diagnosis of AML (French-American-British classification M1). Magnetic resonance imaging enhanced with gadolinium-diethylenetriamine penta-acetic acid showed abnormal enhancement of the right facial nerve, which disappeared after chemotherapy. AML should be considered as a differential diagnosis of facial palsy. Enhanced magnetic resonance imaging may be useful for diagnosing facial palsy associated with AML and for evaluating treatment outcome.
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Affiliation(s)
- Kazuo Kubota
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
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31
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Funato M, Uemura O, Ushijima K, Ohnishi H, Orii K, Kato Z, Yamakawa S, Nagai T, Ohara O, Kaneko H, Kondo N. A complement factor B mutation in a large kindred with atypical hemolytic uremic syndrome. J Clin Immunol 2014; 34:691-5. [PMID: 24906628 DOI: 10.1007/s10875-014-0058-8] [Citation(s) in RCA: 7] [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: 07/09/2013] [Accepted: 05/15/2014] [Indexed: 12/12/2022]
Abstract
PURPOSE Gain-of-function mutations in complement factor B (CFB) were recently identified in patients with atypical hemolytic uremic syndrome (aHUS), but are extremely rare. Our purpose is to describe a large kindred with aHUS associated with a CFB mutation and to further understand CFB-mutated aHUS patients. METHODS AND RESULTS We report a large kindred in which 3 members had aHUS. This kindred revealed that 9 of 12 members, including 2 affected patients, had persistent activation of the alternative pathway with low complement component 3 and that those 9 members showed a CFB mutation (c.1050G > C, p.Lys350Asn) in exon 8. This missense mutation was heterozygous in 8 of them and homozygous in only one. From structural studies, this mutation is shown to be located in close proximity to the Mg2-binding site within a von Willebrand factor type A domain of CFB, resulting in a gain-of-function effect of CFB and predisposition to aHUS. At present, 2 of the 3 members with aHUS have maintained normal renal function for a long-term period. CONCLUSIONS This kindred illustrates that a CFB mutation (c.1050G > C, p.Lys350Asn) can result in aHUS. In the future, phenotype-genotype correlations and outcome in CFB-mutated aHUS patients need to be further investigated by accumulation of a number of cases.
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Affiliation(s)
- Michinori Funato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan,
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Funato M, Ono Y, Baba K, Kudo Y. Evaluation of the non-functional tooth contact in patients with temporomandibular disorders by using newly developed electronic system. J Oral Rehabil 2014; 41:170-6. [PMID: 24447128 PMCID: PMC4263305 DOI: 10.1111/joor.12129] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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] [Accepted: 12/08/2013] [Indexed: 11/28/2022]
Abstract
The aims of this study were to introduce a novel electronic system for reliable evaluation of the non-functional tooth contact in patients with temporomandibular disorders (TMDs) and investigate the possible associations between the non-functional tooth contact and some characteristics of the patients with TMD. We designed and installed a software program to send emails regarding the non-functional tooth contact to the subjects' preregistered cellular phones at intervals of 20 ± 9 min daily for 10 consecutive days. Twelve patients with TMD and 12 gender- and age-matched healthy subjects responded via emails to one of 3 choices: no tooth contact, tooth contact during oral functions or tooth contact not associated with oral functions. The influence of subjective stress, anxiety, depression, personality and daily activities on tooth contact was then assessed. The frequency of the non-functional tooth contact was significantly higher in the patients with TMD than in the healthy subjects (35·0% vs. 9·6%, P < 0·001), while no significant group difference was found for the frequency of functional tooth contact, the stress, anxiety, depression and personality.
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Affiliation(s)
- M Funato
- Division of Temporomandibular Disorders and Orofacial Pain, Department of Special Needs Dentistry, Showa University School of Dentistry, Tokyo, Japan
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33
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Shiba N, Funato M, Ohki K, Park MJ, Mizushima Y, Adachi S, Kobayashi M, Kinoshita A, Sotomatsu M, Arakawa H, Tawa A, Horibe K, Tsukimoto I, Hayashi Y. Mutations of the GATA2 and CEBPA genes in paediatric acute myeloid leukaemia. Br J Haematol 2013; 164:142-5. [PMID: 24033149 DOI: 10.1111/bjh.12559] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Norio Shiba
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan; Department of Paediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
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34
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Funato M, Kaneko H, Sasai H, Kubota K, Ozeki M, Kanda K, Kato Z, Kondo N. Peripheral blood stem cell transplantation in a significant body weight difference between a smaller donor and a larger recipient: a case report. Transfus Apher Sci 2013; 49:504-6. [PMID: 23422651 DOI: 10.1016/j.transci.2013.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Revised: 09/27/2012] [Accepted: 01/10/2013] [Indexed: 11/24/2022]
Abstract
Allogeneic peripheral blood stem cell transplantation (PBSCT) is becoming a common transplantation procedure in children. However, few benefits have been reported, in particular in regard to the choice of small children as donors for larger recipients. We report a case of relapsed acute myeloid leukemia (body weight 52 kg and blood type O) who underwent allogeneic PBSCT from his smaller human leukocyte antigen-matched brother (body weight 29.9 kg and blood type A).
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Affiliation(s)
- Michinori Funato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan.
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Abstract
BACKGROUND Rotavirus infection is occasionally associated with central nervous system involvement, including cerebellitis. However, the precise clinical sequelae of central nervous system disorders and the usefulness of neuroradiological examination for clinical therapies, such as steroid pulse therapy, have not been clarified. METHODS We present a case of rotavirus cerebellitis examined by magnetic resonance imaging (MRI), magnetic resonance spectroscopy, and single photon emission computed tomography. RESULTS MRI demonstrated abnormal intensities in the right cerebellum on fluid attenuated inversion recovery images and, much more obviously, on diffusion-weighted images, but not on T1- or T2-weighted images. Single photon emission computed tomography showed only mild hypoperfusion in the right cerebellum on the 15th day, while 4 weeks later the image showed remarkably low perfusion in the right cerebellum. CONCLUSION The findings of the reported case suggest the importance of performing radiological examinations at early phases of the disease, especially by new modalities such as diffusion weighted imaging, to make timely and appropriate therapeutic decisions.
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Affiliation(s)
- Zenichiro Kato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194 Gifu, Japan.
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36
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Funato M, Kondo N. [New knowledge of Li-Fraumeni syndrome]. Gan To Kagaku Ryoho 2013; 40:148-153. [PMID: 23411951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Li-Fraumeni syndrome(LFS)is the autosomal-dominant familial cancer predisposition syndrome. The criteria for it have already been defined, and most patients with this syndrome have been identified with germline mutations in the p53 tumor suppressor gene(TP53). More recently, the feasibility and potential clinical effect of a comprehensive surveillance of asymptomatic TP53 mutation carriers of this syndrome are being shown. However, the prevention and treatment recommendations for cancer, and the support system for LFS, are insufficient. In the future, patients with this syndrome require more developed medical treatment because they and their families have profound medical issues and psychosocial distress.
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Affiliation(s)
- Michinori Funato
- Dept. of Pediatrics, Graduate School of Medicine, Gifu University, Yanagido, Gifu, Japan
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37
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Funato M, Fukao T, Sasai H, Hori T, Terazawa D, Kanda K, Ozeki M, Mizuta K, Hirose Y, Kaneko H, Kondo N. Paclitaxel-based chemotherapy for aggressive kaposiform hemangioendothelioma of the temporomastoid region: Case report and review of the literature. Head Neck 2012; 35:E258-61. [PMID: 22907922 DOI: 10.1002/hed.23107] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2012] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Kaposiform hemangioendothelioma (KHE) is a rare vascular tumor of infancy and childhood. This tumor results in poor prognosis, and therefore, development of a more effective treatment is needed. METHODS AND RESULTS We describe an 11-year-old boy presenting with left facial palsy caused by aggressive KHE of the left temporomastoid region. He was treated with paclitaxel-based chemotherapy, because of the difficulty with complete surgical resection for anatomic factor, multiple lung metastases on diagnosis, and no response to conventional treatments. This treatment reduced the volume of primary tumor and lung metastatic lesions, but the efficacy was transitory. CONCLUSIONS Paclitaxel-based chemotherapy for aggressive KHE may be effective, therefore the multimodality therapy including paclitaxel of aggressive KHE, particularly in the head and neck, needs to be investigated in further studies.
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38
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Kaneta A, Fujimoto R, Hashimoto T, Nishimura K, Funato M, Kawakami Y. Instrumentation for dual-probe scanning near-field optical microscopy. Rev Sci Instrum 2012; 83:083709. [PMID: 22938305 DOI: 10.1063/1.4737883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To investigate local carrier motions, we developed a dual-probe scanning near-field optical microscope (SNOM) with two fiber probes where one is for photoexcitation and the other is for light collection. This instrumentation is based on two important techniques: the design of probe structures and distance control between the sample surface and the two probes. A finite-difference time-domain method numerically analyzed and optimized the design for high efficiency photoexcitation and light collection, while a dual band modulation realized distance control. Real time detection of the oscillations of the probe tips using different frequencies independently controls the distance between the probe tip and the sample surface as well as the distance between the two probes. Thus, the collection probe can be scanned around an illumination probe without destroying the probe tips. To demonstrate our SNOM, we performed photoluminescence spectroscopy under the dual-probe configuration and observed carrier motions in an InGaN quantum well.
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Affiliation(s)
- A Kaneta
- Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan
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39
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Funato M, Fukao T, Sasai H, Hori T, Terazawa D, Kubota K, Ozeki M, Orii K, Kaneko H, Kondo N. Successful treatment of pediatric immune thrombocytopenic purpura associated with ulcerative colitis. Pediatr Int 2011; 53:771-773. [PMID: 21955013 DOI: 10.1111/j.1442-200x.2010.03308.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 01/19/2023]
Affiliation(s)
- Michinori Funato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Toshiyuki Fukao
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Hideo Sasai
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Tomohiro Hori
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Daisuke Terazawa
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kazuo Kubota
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Michio Ozeki
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kenji Orii
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Hideo Kaneko
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Naomi Kondo
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
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Funato M, Kaneko H, Kubota K, Ozeki M, Kanda K, Orii K, Kato Z, Fukao T, Kondo N. Pediatric acute lymphoblastic leukemia mimicking Henoch-Schönlein purpura. Pediatr Int 2011; 53:766-768. [PMID: 21955011 DOI: 10.1111/j.1442-200x.2011.03445.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 11/27/2022]
Affiliation(s)
- Michinori Funato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Hideo Kaneko
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kazuo Kubota
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Michio Ozeki
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kaori Kanda
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kenji Orii
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Zenichiro Kato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Toshiyuki Fukao
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Naomi Kondo
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan
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41
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Bardoux R, Kaneta A, Funato M, Okamoto K, Kawakami Y, Kikuchi A, Kishino K. Single mode emission and non-stochastic laser system based on disordered point-sized structures: toward a tuneable random laser. Opt Express 2011; 19:9262-9268. [PMID: 21643181 DOI: 10.1364/oe.19.009262] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
As an advantage, random lasers may be elaborated from a large variety of materials and do not require any cavity oscillators that usually necessitate complicated and expensive fabrication techniques. Since the feedback process of those non-conventional laser systems is provided by light interference in a disordered medium, spectral and temporal uncertainties are usually considered as an intrinsic part of their optical proprieties. We investigated random laser action under two photon absorption experiments through an auto-organized InGaN/GaN quantum-disks ensemble. Thanks to our experimental approach, we evidence random lasing based on a gain medium constituted by point-sized structures. In such context, a stabilised and individual emission mode is observed as for conventional semiconductor lasers. By controlling the emission energy of these nanostructures, a tuneable and stable random laser may be built. Moreover, our findings suggest that disordered medium should play an important role in the conception of low cost quantum dot and up conversion laser systems.
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Affiliation(s)
- R Bardoux
- Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan.
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42
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An Y, Ohnishi H, Matsui E, Funato M, Kato Z, Teramoto T, Kaneko H, Kimura T, Kubota K, Kasahara K, Kondo N. Genetic variations in MyD88 adaptor-like are associated with atopic dermatitis. Int J Mol Med 2011; 27:795-801. [PMID: 21399862 DOI: 10.3892/ijmm.2011.645] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 01/20/2011] [Indexed: 11/06/2022] Open
Abstract
Toll-like receptors (TLRs) are important pathogen-associated molecular pattern recognition receptors involved in initiating immune responses. The adaptor protein MyD88 adaptor-like (Mal), involved in signaling downstream of TLRs, plays a crucial role in mediating NF-κB activation. The association of Mal polymorphisms with allergic diseases has not previously been defined. The objective of this study was to detect polymorphisms in the Mal gene and to investigate their association with allergic diseases. Mal gene polymorphisms were genotyped in 310 subjects. The functional effects of Mal variants were analyzed in vitro. One Mal polymorphism, c.303 G>A (Q101Q), was found at a significantly lower frequency in atopic dermatitis patients (p=0.016). Q101Q is in linkage disequilibrium with -103 A>G (rs1893352) and c.539 C>T (S180L) (rs8177374) in the HapMap database. The A allele of -103 A>G showed significantly reduced transcription of Mal compared with the G allele. In addition, three rare variants were identified in this study, c.394 G>A (E132K), c.428 G>A (R143Q) and c.570 G>C (E190D), and were shown to lead to loss-of-function of Mal. It is possible that gene polymorphisms in Mal could affect atopic dermatitis by influencing the innate immune system. We show that Q101Q, which is in linkage disequilibrium with -103 A>G and S180L, may play a protective role against atopic dermatitis. Furthermore, we propose that loss-of-function variants of Mal could predispose individuals to atopic dermatitis or other immunological disorders.
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Affiliation(s)
- Yang An
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, Japan
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Ozeki M, Kunishima S, Kasahara K, Funato M, Teramoto T, Kaneko H, Fukao T, Kondo N. Corrigendum to “A family having type 2B von Willebrand disease with an R1306W mutation: Severe thrombocytopenia leads to the normalization of high molecular weight multimers” [Thrombosis Research 125 (2010) e17–e22]. Thromb Res 2010. [DOI: 10.1016/j.thromres.2010.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ozeki M, Funato M, Teramoto T, Ohe N, Asano T, Kaneko H, Fukao T, Kondo N. Reversible cerebrospinal fluid edema and porencephalic cyst, a rare complication of ventricular catheter. J Clin Neurosci 2010; 17:658-61. [DOI: 10.1016/j.jocn.2009.07.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 07/23/2009] [Accepted: 07/24/2009] [Indexed: 11/26/2022]
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45
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Kato Z, Orii KE, Morimoto M, Sasai H, Funato M, Sawatari S, Kuwabara H, Kondo N. A transient lesion in the corpus callosum during rotavirus infection. Pediatr Neurol 2009; 41:467-9; author reply 469. [PMID: 19931174 DOI: 10.1016/j.pediatrneurol.2009.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Ohnishi H, Kato Z, Teramoto T, Funato M, Kaneko H, Fukao T, Kondo N. [Diagnostic approach for the autoinflammatory syndromes based on the molecular mechanism of innate immunity]. Arerugi 2009; 58:1502-1512. [PMID: 20168068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Hidenori Ohnishi
- Department of Pediatrics, Graduate School of Medicine, Gifu University.
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47
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Ozeki M, Kato Z, Sasai H, Kubota K, Funato M, Orii K, Kaneko H, Fukao T, Kondo N. Congenital inner ear malformations without sensorineural hearing loss in children. Int J Pediatr Otorhinolaryngol 2009; 73:1484-7. [PMID: 19695719 DOI: 10.1016/j.ijporl.2009.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [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: 06/28/2009] [Accepted: 07/16/2009] [Indexed: 10/20/2022]
Abstract
Inner ear malformations are frequently found in patients with congenital hearing loss. It has been reported that normal hearing is rare in patients with severe inner ear vestibular malformations. A 9-year-old boy had had complained of recurrent dizziness and disequilibrium for 2 months. Clinical and neuro-otological examinations showed peripheral involvement of the vestibular system, while audiological investigation was normal. High-resolution magnetic resonance imaging, with three-dimensional reconstruction, showed dysplasia of the bilateral lateral semicircular canals (LSCCs). Isolated vestibular malformation might not be as rare as previously thought, and should be examined by imaging of the temporal bone.
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Affiliation(s)
- Michio Ozeki
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan.
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48
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Ozeki M, Kunishima S, Kasahara K, Funato M, Teramoto T, Kaneko H, Fukao T, Kondo N. A family having type 2B von Willebrand disease with an R1306W mutation: Severe thrombocytopenia leads to the normalization of high molecular weight multimers. Thromb Res 2009; 125:e17-22. [PMID: 19740526 DOI: 10.1016/j.thromres.2009.08.012] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 03/08/2009] [Revised: 08/09/2009] [Accepted: 08/10/2009] [Indexed: 11/16/2022]
Abstract
In type 2B von Willebrand disease (2B VWD), abnormal von Willebrand factor (VWF) spontaneously binds to platelets. This leads to the clearance of the high molecular weight multimers (HMWM) of VWF and results in thrombocytopenia. Herein we report a family of 2B VWD with an R1306W mutation which caused thrombocytopenia with giant platelets. The most important finding in this study is dynamic changes in VWF values in association with platelet counts. When the proband (2 years of age) had severe thrombocytopenia, his HMWM were normal, however, hematological examination showed a low level of VWF and a lack of HMWM after platelet count recovered. His affected sister also exhibited similar phenomenona. These results suggest that the severe thrombocytopenia leads to decreased clearance of VWF HMWM and restoration of VWF HMWM in plasma. We must consider 2B VWD in the case of recurrent thrombocytopenia following infection or other stress condition.
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Affiliation(s)
- Michio Ozeki
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan.
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49
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Funato M, Fukao T, Sasai H, Hori T, Terazawa D, Ozeki M, Orii K, Teramoto T, Kaneko H, Kondo N. Translocation (1;10)(p34;p15) in infant acute myeloid leukemia with extramedullary infiltration in multiple sites. ACTA ACUST UNITED AC 2009; 192:86-9. [PMID: 19596261 DOI: 10.1016/j.cancergencyto.2009.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Accepted: 04/09/2009] [Indexed: 11/18/2022]
Abstract
Primary acute myeloid leukemia (AML) with extramedullary infiltration (EMI) in multiple sites is rare. Herein, we describe a case of infant AML with EMI in multiple sites. She had dyspnea and hypofibrinogenemia at diagnosis, and systemic computed tomography revealed EMI in the orbit, gingiva, bronchial pathway, and urinary tract. Bone marrow examination confirmed the diagnosis of AML with t(1;10)(p34;p15). No case of AML with t(1;10)(p34;p15) has been reported in the literature. At the present time, she remains free of disease 12 months after bone marrow transplantation (BMT) in the second complete remission.
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MESH Headings
- Bone Marrow/pathology
- Chromosomes, Human, Pair 1/genetics
- Chromosomes, Human, Pair 10/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Infant
- Karyotyping
- Leukemia, Myeloid, Acute/complications
- Leukemia, Myeloid, Acute/diagnostic imaging
- Leukemia, Myeloid, Acute/genetics
- Leukemic Infiltration/complications
- Leukemic Infiltration/diagnostic imaging
- Leukemic Infiltration/genetics
- Tomography, X-Ray Computed
- Translocation, Genetic
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Affiliation(s)
- Michinori Funato
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Yanagido 1-1, Gifu, Japan
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Teramoto T, Kaneko H, Funato M, Sawa H, Nagashima K, Hirose Y, Kondo N. Progressive Multifocal Leukoencephalopathy in a Patient with X-linked Agammaglobulinemia. ACTA ACUST UNITED AC 2009; 35:909-10. [PMID: 14723382 DOI: 10.1080/00365540310016673] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
To our knowledge, this is the first case report describing progressive multifocal leukoencephalopathy (PML) associated with X-linked agammaglobulinemia. The JC virus was confirmed at autopsy and PML was diagnosed. Humoral immunodeficiency with normal cellular immunity could be infected with JCV.
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Affiliation(s)
- Takahide Teramoto
- Department of Pediatrics, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu 500-8705, Japan.
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