1
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ElMahmoudy M, Curto VF, Ferro M, Hama A, Malliaras GG, O'Connor RP, Sanaur S. Electrically controlled cellular migration on a periodically micropatterned PEDOT:PSS conducting polymer platform. J Appl Polym Sci 2018. [DOI: 10.1002/app.47029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M. ElMahmoudy
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - V. F. Curto
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - M. Ferro
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - A. Hama
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - G. G. Malliaras
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - R. P. O'Connor
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Bioelectronics; F-13541 Gardanne France
| | - S. Sanaur
- IMT Mines Saint-Etienne, Provence Microelectronics Center, Department of Flexible Electronics; F-13541 Gardanne France
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Suzuki K, Suzuki Y, Hama A, Muramatsu H, Nakatochi M, Gunji M, Ichikawa D, Hamada M, Taniguchi R, Kataoka S, Murakami N, Kojima D, Sekiya Y, Nishikawa E, Kawashima N, Narita A, Nishio N, Nakazawa Y, Iwafuchi H, Watanabe KI, Takahashi Y, Ito M, Kojima S, Kato S, Okuno Y. Recurrent MYB rearrangement in blastic plasmacytoid dendritic cell neoplasm. Leukemia 2017; 31:1629-1633. [PMID: 28344318 DOI: 10.1038/leu.2017.101] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- K Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suzuki
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - A Hama
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nakatochi
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - M Gunji
- Department of Pathology, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - D Ichikawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Hamada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - R Taniguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kataoka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Murakami
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - D Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Sekiya
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - E Nishikawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Kawashima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Nishio
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - H Iwafuchi
- Department of Pathology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - K-I Watanabe
- Department of Hematology and Oncology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Y Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Ito
- Department of Pathology, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - S Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kato
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Y Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
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Ogawa S, Awaga Y, Takashima M, Hama A, Matsuda A, Takamatsu H. Knee osteoarthritis pain following medial meniscectomy in the nonhuman primate. Osteoarthritis Cartilage 2016; 24:1190-9. [PMID: 26944197 DOI: 10.1016/j.joca.2016.02.006] [Citation(s) in RCA: 10] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 02/08/2016] [Accepted: 02/12/2016] [Indexed: 02/06/2023]
Abstract
OBJECTIVE A number of promising compounds developed for osteoarthritic pain have failed to demonstrate clinical efficacy. To enhance preclinical translational research for osteoarthritis, a model of knee osteoarthritis pain was developed in Macaca fascicularis and the effects of two distinct pharmacological classes of drugs were tested on pain-related behavior. DESIGN Behavioral assessments were developed specifically for the macaque. Baseline knee pressure threshold and weight bearing were assessed prior to a unilateral medial meniscectomy (MMx). Fifteen days following MMx, macaques underwent a once daily exercise regimen for 36 days. Sixty-seven days following MMx, macaques were assigned to one of three treatment groups (n = 3/group), either non-steroidal anti-inflammatory drug (NSAID) diclofenac, NK1 receptor antagonist aprepitant or vehicle, and treated for 5 days. Animals were tested 3-4 h after p.o. dosing and testing was performed blinded. Treatment utilized a crossover design-each animal received all treatments-and a 9-day washout period was utilized between treatments. RESULTS Vehicle-treated macaques consistently demonstrated decreased ipsilateral pressure threshold ("hyperalgesia") and decreased weight bearing. While diclofenac increased weight bearing and pressure threshold, full attenuation of pain was not obtained. No significant improvement of either knee pressure or weight bearing was observed with aprepitant. CONCLUSIONS Unilateral MMx in the macaque evoked pain-related behaviors and knee joint pathology reminiscent of osteoarthritis. The behavioral endpoints were sensitive to NSAID treatment but not sensitive to NK1 receptor block, which parallel clinical findings. The current macaque osteoarthritis model could be used to test potential treatments for osteoarthritis pain.
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Affiliation(s)
- S Ogawa
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan
| | - Y Awaga
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan
| | - M Takashima
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan
| | - A Hama
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan.
| | - A Matsuda
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan
| | - H Takamatsu
- Hamamatsu Pharma Research, Inc., Hamamatsu, Japan
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Ramuz M, Hama A, Rivnay J, Leleux P, Owens RM. Monitoring of cell layer coverage and differentiation with the organic electrochemical transistor. J Mater Chem B 2015; 3:5971-5977. [DOI: 10.1039/c5tb00922g] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
High resolution monitoring of cell layer integrity with the OECT was up until now, limited to high resistance, barrier tissue type cells. In this work, the sensitivity and versatility of the device is expanded to monitor all adherent cell types.
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Affiliation(s)
- M. Ramuz
- Department of Bioelectronics
- Ecole des Mines de St. Etienne
- CMP-EMSE
- MOC
- France
| | - A. Hama
- Department of Bioelectronics
- Ecole des Mines de St. Etienne
- CMP-EMSE
- MOC
- France
| | - J. Rivnay
- Department of Bioelectronics
- Ecole des Mines de St. Etienne
- CMP-EMSE
- MOC
- France
| | - P. Leleux
- Department of Bioelectronics
- Ecole des Mines de St. Etienne
- CMP-EMSE
- MOC
- France
| | - R. M. Owens
- Department of Bioelectronics
- Ecole des Mines de St. Etienne
- CMP-EMSE
- MOC
- France
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Hama A, Muramatsu H, Ito M, Tsuchida M, Takahashi Y, Kobayashi R, Ito E, Yabe H, Ohga S, Ohara A, Kojima S. P-149 Comparison of long-term outcomes between children with aplastic anemia and RCC who received immunosuppressive therapy with ATG and cyclosporine. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70197-8] [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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Muramatsu H, Sakaguchi H, Xu Y, Yoshida K, Okuno Y, Hama A, Takahashi Y, Makishima H, Maciejewski J, Ogawa S, Kojima S. P-146 Clinical and genetic characterization of 17 juvenile myelomonocytic leukemia patients with c-CBL mutations. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70194-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ohmoto M, Sakaishi K, Hama A, Morita A, Nomura M, Mitsumoto Y. Association Between Dopamine Receptor 2 TaqIA Polymorphisms and Smoking Behavior With an Influence of Ethnicity: A Systematic Review and Meta-Analysis Update. Nicotine Tob Res 2012; 15:633-42. [DOI: 10.1093/ntr/nts196] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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8
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Hama A. The challenge of understanding peripherally mediated antinociception: commentary on a paper by Chung et al. (2012, this issue). Eur J Pain 2012; 16:949-50. [PMID: 22528949 DOI: 10.1002/j.1532-2149.2012.00160.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- A Hama
- University of Miami Miller School of Medicine, FL 33136, USA.
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9
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Narita A, Muramatsu H, Takahashi Y, Sakaguchi H, Doisaki S, Nishio N, Hama A, Shimada A, Ito M, Kojima S. Autoimmune-like hepatitis following unrelated BMT successfully treated with rituximab. Bone Marrow Transplant 2011; 47:600-2. [PMID: 21666737 DOI: 10.1038/bmt.2011.124] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Ito M, Hama A, Manabe A, Kojima S. 120 Diagnosing pedia trie bone marrow failures by objective myelodysplastic syndrome scoring system: A histopathological review. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70122-9] [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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11
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Hama A, Ito M, Manabe A, Ohara A, Kojima S. 91 A comparison of clinical findings between aplastic anemia and refractory cytopenia of childhood in 78 cases reviewed by central reviewers. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70093-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Yagasaki H, Takahashi Y, Hama A, Kudo K, Nishio N, Muramatsu H, Tanaka M, Yoshida N, Matsumoto K, Watanabe N, Kato K, Horibe K, Kojima S. Comparison of matched-sibling donor BMT and unrelated donor BMT in children and adolescent with acquired severe aplastic anemia. Bone Marrow Transplant 2010; 45:1508-13. [PMID: 20118992 DOI: 10.1038/bmt.2009.378] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
From January 1991 to March 2007, 61 children and adolescent with acquired severe aplastic anemia received BMT in our institutions. We retrospectively compared the outcome of 30 cases of matched-sibling donor BMT (MSD-BMT) and 31 cases of unrelated donor BMT (URD-BMT). We observed one graft failure among MSD-BMT recipients and three graft failures among URD-BMT recipients, respectively. No patients in the MSD-BMT group developed grades II-IV acute GVHD compared with 11 of 30 patients (37%) in the URD-BMT group (P<0.001). One of 30 MSD-BMT recipients (3%) developed chronic GVHD compared with 8 of 30 URD-BMT recipients (27%) (P=0.013). The incidence of EBV and CMV reactivation was 11 of 20 URD-BMT recipients and 23 of 30, respectively. One patient in the URD-BMT group died of a motor accident 5.5 years after BMT. Ten-year OS was 100% in MSD-BMT recipients and 93.8% (95% CI, 81.9-100%) in URD-BMT recipients, respectively (P=0.252). Ten-year failure-free survival was 96.7% (95% CI, 90.2-100%) in the MSD-BMT group and 84.7% (95% CI, 70.2-99.2%) in the URD-BMT group, respectively (P=0.161).
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Affiliation(s)
- H Yagasaki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Nishio N, Yagasaki H, Takahashi Y, Muramatsu H, Hama A, Tanaka M, Yoshida N, Watanabe N, Kudo K, Yoshimi A, Kojima S. Late-onset non-infectious pulmonary complications following allogeneic hematopoietic stem cell transplantation in children. Bone Marrow Transplant 2009; 44:303-8. [PMID: 19349954 DOI: 10.1038/bmt.2009.33] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Late-onset non-infectious pulmonary complications (LONIPCs) that arise beyond 3 months after allogeneic hematopoietic SCT include bronchiolitis obliterans (BO), bronchiolitis obliterans with organizing pneumonia (BOOP) and idiopathic pneumonia syndrome (IPS). We retrospectively analyzed the incidence and outcome of LONIPCs among pediatric hematopoietic SCT recipients. We included 97 patients who survived for more than 3 months among the 114 who underwent allogeneic hematopoietic SCT between April 1997 and May 2007. Of the 97 enrolled patients, 10 (10.3%) developed LONIPCs at a median of 187 days after hematopoietic SCT (range, 123-826 days). Of the 10 patients with LONIPCs, eight had BO and two had IPS. Multivariate analysis showed that the onset of LONIPCs was associated with high-risk underlying disease and extensive chronic GVHD (hazard ratio, 5.42 (95% confidence interval, 1.36-21.7) and hazard ratio, 11.7 (95% confidence interval, 2.40-57.1), respectively). Only two patients responded to therapy with steroids and six of the 10 patients died. The 5-year OS rate was significantly lower among patients with, than without LONIPCs (28.0 vs 87.2%, P=0.000). Considering that we are lacking optimal therapies for LONIPCs, strategies aimed at the prevention of LONIPCs should be attempted.
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Affiliation(s)
- N Nishio
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Wang Y, Yagasaki H, Hama A, Nishio N, Takahashi Y, Kojima S. Mutation of SBDS and SH2D1A is not associated with aplastic anemia in Japanese children. Haematologica 2007; 92:1573. [DOI: 10.3324/haematol.11568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Inukai T, Hirose K, Inaba T, Kurosawa H, Hama A, Inada H, Chin M, Nagatoshi Y, Ohtsuka Y, Oda M, Goto H, Endo M, Morimoto A, Imaizumi M, Kawamura N, Miyajima Y, Ohtake M, Miyaji R, Saito M, Tawa A, Yanai F, Goi K, Nakazawa S, Sugita K. Hypercalcemia in childhood acute lymphoblastic leukemia: frequent implication of parathyroid hormone-related peptide and E2A-HLF from translocation 17;19. Leukemia 2006; 21:288-96. [PMID: 17183364 DOI: 10.1038/sj.leu.2404496] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hypercalcemia is relatively rare but clinically important complication in childhood leukemic patients. To clarify the clinical characteristics, mechanisms of hypercalcemia, response to management for hypercalcemia, incidence of t(17;19) and final outcome of childhood acute lymphoblastic leukemia (ALL) accompanied by hypercalcemia, clinical data of 22 cases of childhood ALL accompanied by hypercalcemia (>12 mg/dl) reported in Japan from 1990 to 2005 were retrospectively analyzed. Eleven patients were 10 years and older. Twenty patients had low white blood cell count (<20 x 10(9)/l), 15 showed hemoglobin> or =8 g/dl and 14 showed platelet count > or =100 x 10(9)/l. Parathyroid hormone-related peptide (PTHrP)-mediated hypercalcemia was confirmed in 11 of the 16 patients in whom elevated-serum level or positive immunohistochemistry of PTHrP was observed. Hypercalcemia and accompanying renal insufficiency resolved quickly, particularly in patients treated with bisphosphonate. t(17;19) or add(19)(p13) was detected in five patients among 17 patients in whom karyotypic data were available, and the presence of E2A-HLF was confirmed in these five patients. All five patients with t(17;19)-ALL relapsed very early. Excluding the t(17;19)-ALL patients, the final outcome of ALL accompanied by hypercalcemia was similar to that of all childhood ALL patients, indicating that the development of hypercalcemia itself is not a poor prognostic factor.
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Affiliation(s)
- T Inukai
- Department of Pediatrics, University of Yamanashi, School of Medicine, Yamanashi, Japan.
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16
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Watanabe N, Kamachi Y, Koyama N, Hama A, Liang J, Nakamura Y, Yamamoto T, Isomura M, Kudo K, Kuzushima K, Kojima S. Expansion of human CMV-specific cytotoxic T lymphocytes to a clinical scale: a simple culture system using tetrameric HLA–peptide complexes. Cytotherapy 2004; 6:514-22. [PMID: 15512918 DOI: 10.1080/14653240410005005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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
BACKGROUND Recipients of allogeneic stem cell transplants (SCT) are at risk of human CMV infection during their immunocompromised period. The increasing number of reports of CMV isolates resistant to ganciclovir after transplantation has led us to attempt to develop alternative strategies for preventing or treating CMV infection. This study describes a system for generating sufficient numbers of CMV-specific cytotoxic T lymphocytes (CTL) for adoptive immunotherapy after SCT. METHODS CMV-specific CTL were isolated from a single blood draw of a CMV-seropositive donor using PE-labeled HLA-A*0201/pp65(495-503) tetramers and anti-PE magnetic beads. A mixture of a tetramer-positive population and CD4(+) T lymphocytes was expanded to sufficient numbers for clinical application with IL-2 and immobilized anti-CD3 stimulation. RESULT Starting from 50 mL of blood, we generated >10(7)/m(2) tetramer-positive CTL within 2 weeks. Flow cytometric analysis of expanded lymphocytes showed that purity of CMV peptide-specific CTL was >75%. Upon stimulation of HLA-A*0201-restricted CMV peptide, expanded CD8 T lymphocytes produced intracellular IFN-gamma. Purified CTL exhibited cytotoxic activity against CMV peptide-pulsed T2 cells and CMV-infected HLA-A*0201-positive fibroblasts, but not against HLA mismatched or uninfected target cells. Alloreactivity could be excluded in MLC. DISCUSSION This simple, rapid culture system can be useful for adoptive immunotherapy after allogeneic SCT. We are now trying to adapt our laboratory scale study to a clinical scale study under good manufacturing practices (GMP) conditions.
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Affiliation(s)
- N Watanabe
- Department of Pediatrics/Developmental Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Hama A, Furune S, Nomura K, Takada Y, Matsushima Y. [A case of unilateral moyamoya disease presenting with hemichorea]. No To Hattatsu 2001; 33:166-71. [PMID: 11260920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We reported a 12-year-old boy with unilateral moyamoya disease whose initial and predominant manifestation was hemichorea. Neurological examinations revealed chorea in his left upper extremity and muscle hypotonia in his left upper and lower extremities. Cranial MRI showed moyamoya vessels only in the right basal ganglia and infarction in the white matter of the right frontal lobe. Right carotid angiography revealed stenosis in the distal part of internal carotid artery, and in the proximal part of anterior and middle cerebral arteries with moyamoya vessels. Left carotid angiography showed normal findings. He was diagnosed as a suspected case of moyamoya disease (unilateral moyamoya disease) according to the diagnostic criteria proposed by the Research Committee on Moyamoya Disease of the Ministry of Health and Welfare of Japan. His chorea responded to haloperidol but encephalo-duro-arterio-synangiosis on the right side improved all symptoms. Chorea occurs in some patients with moyamoya disease. Hypofunction of the striatal indirect pathway is suggested as the cause of chorea. In this case an ischemic lesion in the right striatum may have caused hypofunction of the pathway and developed chorea and hypotonia.
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Affiliation(s)
- A Hama
- Department of Pediatric Neurology, Japanese Red Cross Nagoya First Hospital, Nagoya
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18
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Hama A, Menzaghi F. Antagonist of nicotinic acetylcholine receptors (nAChR) enhances formalin-induced nociception in rats: tonic role of nAChRs in the control of pain following injury. Brain Res 2001; 888:102-106. [PMID: 11146056 DOI: 10.1016/s0006-8993(00)03022-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Following tissue injury, spinal neurons increase in spontaneous activity and in responsiveness to peripheral stimulation. These changes in spinal neurons may underlie abnormal pain behavior. Nicotinic acetylcholine receptor (nAChR) agonists are analgesic when evaluated in animal models of pain, but it is not known if the nAChRs differentially modulate acute and tonic pain. To test this, mecamylamine, a non-subtype selective nAChR antagonist, was systemically injected into rats prior or after hind paw injection of formalin. Formalin injection results in biphasic pain-related behaviors, characterized by a first phase (i.e. acute pain) immediately following formalin injection, then by a second phase (i.e. tonic pain) 15-60 min after formalin injection. Either pre- or post-formalin treatment with mecamylamine decreased phase 1 behaviors and significantly increased phase 2 pain behaviors in a dose-dependent manner. These results suggest that nAChRs may exert opposing effects on acute versus tonic pain and, as such, may have implications for the potential development of nAChR ligands for the treatment of pain.
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Affiliation(s)
- A Hama
- Merck Research Laboratories, San Diego, 505 Coast Blvd. South, La Jolla, CA 92037, USA.
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Kawai H, Aoyagi Y, Nomoto M, Takizawa H, Suzuki Y, Hama A, Suda T, Takahashi T, Asakura H. Asymptomatic primary sclerosing cholangitis with marked hepatic fibrosis. Dig Dis Sci 2000; 45:680-4. [PMID: 10759234 DOI: 10.1023/a:1005427223036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- H Kawai
- Department of Internal Medicine, Kido Hospital, Niigata, Japan
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Sato T, Kaneko M, Hama A, Kusakari T, Fujieda H. Expression of class II MHC molecules in the rat pineal gland during development and effects of treatment with carbon tetrachloride. Cell Tissue Res 1996; 284:65-76. [PMID: 8601297 DOI: 10.1007/s004410050567] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cells expressing major histocompatibility complex (MHC) class II (Ia) antigen have been examined during the development of rat pineals and in the pineal gland of adult rats treated with carbon tetrachloride. Cells positive for MHC class II are first detected in the pineal gland of the 7-day-old rat. These positive cells increase in number gradually during development, MHC class II immunoreactivity reaching adult levels at 4 weeks after birth. The MHC class II antigen is intensely labeled on the cell surface, and labeled cells are distributed throughout the organ, several positive cells being gathered into groups. The positive cells are small (7-12 microm in diameter), irregular in shape, and frequently exhibit one or more processes. At the electron-microscopic level, the cytoplasm of positive cells contains few organelles, variously sized empty vacuoles, and a few electron-dense lysosome-like structures. Pinealocytes with synaptic ribbons have been found adjacent to immunoreactive cells. Double-immunoperoxidase staining for MRC OX6, MRC OX42, and ED1 results in OX6(-)/ED1(+)/OX42(+), OX6(-)/ED1(-)/OX42(+), and OX6(+)/ED1(-)/OX42(- )cells. These findings suggest that OX6-positive cells in the pineal can be considered as peripheral dendritic cells. The number of cells expressing MHC class II (Ia) antigen significantly increases in the pineal gland of rats after treatment with carbon tetrachloride (P<0.005). Our results indicate that at least some of the OX6-positive cells migrate into the gland from the circulation under these conditions.
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Affiliation(s)
- T Sato
- Department of Anatomy, School of Medicine, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113 Japan
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Abstract
Loose ligation of the sciatic nerve in the rat can produce behavioral signs of hyperalgesia in the hindpaw. This study examined the effect of an NMDA (N-methyl-D-aspartate) receptor antagonist (MK-801) on the development of hyperalgesia in this model. Rats received i.p. injections of saline or MK-801 (1.0 mg/kg) prior to and then for 7 days after a unilateral sciatic nerve ligation. Testing of each hindpaw for latency to withdrawal from a standardized thermal stimulus was performed prior to ligation and then at 10, 12, 17, 27, and 37 days postoperatively. Hyperalgesia of the operated hindpaw developed in saline-treated animals as measured by a decrease in withdrawal latency. Hyperalgesia did not develop in animals treated with MK-801. MK-801 may therefore prevent the development of hyperalgesia following experimental nerve injury, possibly through an NMDA receptor-mediated effect.
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Affiliation(s)
- G Davar
- Pain Physiology Laboratory, Massachusetts General Hospital, Charlestown 02129
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Takita S, Nishijima H, Kajiura H, Nishimura S, Hama A, Tamaura Y, Kubozoe T, Hikita H, Miki H, Kusaka K. Bi-directional peristaltic conductivity of the alimentary tract in the earliest fetal stage. Nihon Heikatsukin Gakkai Zasshi 1985; 21 Suppl:135-6. [PMID: 3831522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Egami N, Hama A. Letter: Dose-rate effects on the hatchability of irradiated embryos of the fish, Oryzias latipes. Int J Radiat Biol Relat Stud Phys Chem Med 1975; 28:273-8. [PMID: 1081514 DOI: 10.1080/09553007514551041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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