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Miyahara Y, Nishimura T, Itakura K, Takahashi S, Komatsu A, Ikeda S, Yokokawa M, Kawaguchi A, Uchida N, Miura Y. Feasibility of Direct-Conversion Flat Panel Detector (FPD) System as Quality Assurance (QA) Tool for 192-Ir Source of High-dose-rate (HDR) Remote Afterloading Unit: Evaluation of Positional and Temporal Accuracy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sekihara K, Harashima N, Uchida N, Harada M. EP-1591 COMBINED EFFECT OF HYPERTHERMIA AND A NEW HSP70 INHIBITOR, PIFITHRIN-µ, ON PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71924-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ohnishi M, Sawada T, Marumo K, Harada K, Hirose K, Shimizu A, Hayashimoto M, Sato R, Uchida N, Kato H. Antimicrobial susceptibility and genetic relatedness of bovine Stenotrophomonas maltophilia isolates from a mastitis outbreak. Lett Appl Microbiol 2012; 54:572-6. [DOI: 10.1111/j.1472-765x.2012.03246.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Araoka H, Fujii T, Izutsu K, Kimura M, Nishida A, Ishiwata K, Nakano N, Tsuji M, Yamamoto H, Asano-Mori Y, Uchida N, Wake A, Taniguchi S, Yoneyama A. Rapidly progressive fatal hemorrhagic pneumonia caused by Stenotrophomonas maltophilia in hematologic malignancy. Transpl Infect Dis 2012; 14:355-63. [PMID: 22283869 DOI: 10.1111/j.1399-3062.2011.00710.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Revised: 10/06/2011] [Accepted: 10/19/2011] [Indexed: 11/27/2022]
Abstract
BACKGROUND Pneumonia caused by Stenotrophomonas maltophilia is rare, but can be lethal in severely immunocompromised patients. However, its clinical course remains unclear. PATIENTS AND METHODS Patients with pneumonia caused by S. maltophilia in Toranomon Hospital (890 beds, Tokyo, Japan) were reviewed retrospectively between April 2006 and March 2010. RESULTS During the study period, 10 cases of S. maltophilia pneumonia were identified. Seven patients had acute myeloid leukemia, 2 had myelodysplastic syndrome, and 1 had malignant lymphoma. All patients developed symptoms after allogeneic hematopoietic stem cell transplantation (HSCT). Five patients received first cord blood transplantation (CBT), 4 patients received second CBT, and 1 patient received first peripheral blood stem cell transplantation (PBSCT). The overall incidence of S. maltophilia pneumonia among 508 patients who received HSCT during the period was 2.0%. The incidence was 0% (0/95) in patients after bone marrow transplantation, 0.8% (1/133) after PBSCT, and 3.2% (9/279) after CBT. Pneumonia developed a median of 13.5 days (range, 6-40) after transplantation. At onset, the median white blood cell count was 10/μL (range, 10-1900), and the median neutrophil count was 0/μL (range, 0-1720). In all patients, S. maltophilia bacteremia developed with bloody sputum or hemoptysis. The 28-day mortality rate was 100%; the median survival after onset of pneumonia was 2 days (range, 1-10). CONCLUSIONS Hemorrhagic S. maltophilia pneumonia rapidly progresses and is fatal in patients with hematologic malignancy. Attention should be particularly paid to the neutropenic phase early after HSCT or prolonged neutropenia due to engraftment failure. A prompt trimethoprim-sulfamethoxazole-based multidrug combination regimen should be considered to rescue suspected cases of S. maltophilia pneumonia in these severely immunosuppressed patients.
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Uchida N, Katayama A, Kuraoka M, Sueda T. One-stage total thoracic aortic repair for mega-aorta using frozen elephant trunk technique. Interact Cardiovasc Thorac Surg 2011; 13:419-20. [DOI: 10.1510/icvts.2011.275933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Nakamura N, Shikama N, Wada H, Harada H, Nozaki M, Nagakura H, Tago M, Oguchi M, Uchida N. Patterns of Practice in Palliative Radiotherapy for Painful Bone Metastases: A Survey in Japan. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Uchida N, Hsieh MM, Hayakawa J, Madison C, Washington KN, Tisdale JF. Optimal conditions for lentiviral transduction of engrafting human CD34+ cells. Gene Ther 2011; 18:1078-86. [PMID: 21544097 DOI: 10.1038/gt.2011.63] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cytokines are required for γ-retroviral transduction of human CD34+ cells. However, cytokines may reduce engraftment of CD34+ cells and may not be necessary for their lentiviral transduction. We sought to optimize transduction and engraftment of human CD34+ cells using lentiviral vectors. Single 24 h transduction of human CD34+ cells with human immunodeficiency virus type 1 (HIV1)-based lentiviral vectors in media containing stem cell factor (SCF), FMS-like tyrosine kinase 3 (FLT3) ligand, thrombopoietin (each 100 ng ml⁻¹) and 10% fetal bovine serum was compared with various cytokine conditions during ex vivo culture and assayed using humanized xenograft mice for 6 months after transplantation. Serum-free media improved transduction efficiency of human CD34+ cells. Interleukin-3 (20 ng ml⁻¹) had little effect on transduction efficiency or engraftment. Threefold higher cytokine mixture (each 300 ng ml⁻¹) reduced engraftment of CD34+ cells. SCF alone (100 ng ml⁻¹) proved insufficient for maintaining engraftment ability and reduced transduction efficiency. Short-term prestimulation had little effect on transduction efficiency or engraftment, yet 24 h prestimulation showed higher transduction efficiency, higher gene expression levels and lower engraftment. In summary, 24 h prestimulation followed by single 24-h lentiviral transduction in serum-free media with SCF, FLT3 ligand and thrombopoietin yields high transduction efficiency to engrafting human CD34+ cells, and is applicable in human clinical gene therapy trials.
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Yamada M, Kunio O, Kai K, Matsuda K, Iwasaki K, Kuroda S, Takahashi S, Uchida N, Tateoka K. 1467 poster AN ANALYSIS OF THE LONG TERM PRECISION OF MLC IN DYNAMIC IMRT THROUGH DAILY ROUTINE MLC QA. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71589-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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KAWAGUCHI A, Yokokawa M, Ikeda S, Masahiro M, Kawabata Y, Yano S, Tanaka T, Uchida N. 972 poster RADIOTHERAPY WITH CONCOMITANT WEEKLY LOW DOSE GEMCITABINE FOR LOCALLY ADVANCED PANCREATIC CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71094-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Asano-Mori Y, Nishida A, Ikebe T, Ishiwata K, Nakano N, Tsuji M, Yamamoto H, Izutsu K, Uchida N, Masuoka K, Wake A, Yoneyama A, Makino S, Taniguchi S. Varicella Zoster Reactivation After Cord Blood Transplantation: Comparison With Unrelated Bone Marrow Transplantation. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nishida A, Wake A, Yamamoto H, Ishiwata K, Nakano N, Tsuji M, Asano-Mori Y, Uchida N, Izutsu K, Araoka H, Yoneyama A, Makino S, Taniguchi S. Incidence and Clinical Features of Idiopathic Pneumonia Syndrome and Diffuse Alveolar Hemorrhage After Unrelated Cord Blood Transplantation. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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62
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Nakano N, Nishida A, Ohota H, Ikebe T, Shimazu H, Ishiwata K, Araoka H, Tsuji M, Yamamoto H, Asano-Mori Y, Izutsu K, Uchida N, Yoneyama A, Wake A, Makino S, Taniguchi S. Safety of Liposomal Amphotericin B in Allogenic Hematopoietic Transplantation (HSCT) Recipients. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yokokawa M, Miyahara Y, Ikeda S, Kawaguchi A, Moriyama M, Nagami A, Nishimura T, Takahashi S, Uchida N. Evaluation and Application of Optical Fiber Pressure Sensor as a new Real Time Respiration Monitoring System for Radiation Therapy. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hooshmand M, Nguyen H, Tamaki S, Uchida N, Cummings B, Anderson A. Neutrophil-derived C1q and C3a promote migration and astroglial differentiation of human fetal neural stem cells transplanted immediately after spinal cord injury in immunodeficient mice. Mol Immunol 2010. [DOI: 10.1016/j.molimm.2010.05.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Masuoka K, Uchida N, Ishiwata K, Takagi S, Tsuji M, Yamamoto H, Seo S, Matsuno N, Wake A, Makino S, Yoneyama A, Taniguchi S. What is the upper age limit for performing allo-SCT? Cord blood transplantation for an 82-year-old patient with AML. Bone Marrow Transplant 2010; 46:619-20. [DOI: 10.1038/bmt.2010.159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Uchida N, Wake A, Yamamoto H, Yoneyama A, Nishida A, Shimazu H, Nakano N, Ishiwata K, Tsuji M, Asano-Mori Y, Makino S, Masuoka K, Taniguchi S. Rapid Switch To Donor-Type Dominant Chimerism And Early Lymphocyte Recovery Following Reduced-Intensity Cord Blood Transplantation. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kurosawa S, Yamaguchi T, Uchida N, Sakura T, Kanamori H, Usuki K, Yamashita T, Watanabe M, Yakushiji K, Yano S, Nawa Y, Taguchi J, Takeuchi J, Takaue Y, Fukuda T. Prognosis Of Adult Patients With Non-M3 AML After First Relapse. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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68
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Nakano N, Wake A, Yamamoto H, Shimazu H, Ishiwata K, Tuji M, Mori-Asano Y, Uchida N, Yoneyama A, Makino S, Taniguchi S. Unrelated Cord Blood Transplantation (UCBT) Using Myeloablative And Non-Myeloablative Conditioning For 38 Patients With Adult Acute Lymphoblastic Leukemia (ALL). Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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69
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Nishida A, Yamamoto H, Ohta Y, Karasawa M, Kato D, Uchida N, Wake A, Taniguchi S. T-cell post-transplant lymphoproliferative disorder in a patient with chronic idiopathic myelofibrosis following allogeneic PBSC transplantation. Bone Marrow Transplant 2009; 45:1372-4. [DOI: 10.1038/bmt.2009.347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sasaki R, Kawabe T, Abe E, Uchida N, Yasuda K, Uno T, Fujiwara M, Shioyama Y, Shibamoto Y, Yamada S. Multi-institutional Analysis of Solitary Extramedullary Plasmacytoma of the Head and Neck Treated with Curative Radiotherapy. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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71
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Ikeda S, Uchida N, Moriyama M, Yokokawa M, Kawaguchi A, Kitagaki H, Uchida K. DISTORTION OF MAGNETIC RESONANCE IMAGE IN TREATMENT PLANNING OF STEREOTACTIC RADIO-SURGERY. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73252-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Uchida N, Moriyama M, Kawaguchi A, Yokokawa M, Ikeda S, Kitagaki H, Kato H. An RF hyperthermia electrode which generates no edge effect. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22229 Background: For local hyperthermia cancer therapy, radio frequency (RF) capacitive heating with a pair of electrodes is one of the most effective methods. RF hyperthermia with a conventional 2-dimensional square plate electrode produces an ‘edge effect‘ - the focusing of the RF current resulting in focal overheating. We designed and propose a novel hemispherical-shaped RF capacitive heating electrode that generates no edge effect. Methods: A CAD simulation (COMSOL Multiphysics 3.4) was done, and current and specific absorbance ratio (SAR) distributions of both the hemispherical and the conventional square plate shape electrodes were obtained by a 3-D finite element method. Results: The hemispherical electrode generated no focusing of current distribution, nor overheating with SAR elevation, while the square plate electrode produced an edge effect with local SAR elevation. Conclusions: The hemispherical electrode showed no edge effect from focal overheating. Our new electrode may be useful for local heating in the oral or vaginal cavity in clinical use. Phantom studies with a prototype electrode should be carried out for further confirmation. No significant financial relationships to disclose.
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Chantaramee N, Tanaka S, Kato Z, Uchida N, Uematsu K. Characterization of particles packing in alumina green tape. Ann Ital Chir 2009. [DOI: 10.1016/j.jeurceramsoc.2008.07.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wada A, Uchida N, Yokokawa M, Yoshizako T, Kitagaki H. Radiation-induced xerostomia: objective evaluation of salivary gland injury using MR sialography. AJNR Am J Neuroradiol 2009; 30:53-8. [PMID: 18842755 DOI: 10.3174/ajnr.a1322] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND PURPOSE Xerostomia (dry mouth) is one of the serious complications of head and neck irradiation and has a strong influence on a patient's activities of daily living. MR sialography with salivary secretion stimulation provides additional functional information (salivary secretion reserve) and may contribute to the evaluation of the severity of xerostomia and predict the risk of developing a radiation-induced xerostomia. This aim of the study was to analyze MR sialography as an objective tool to evaluate radiation-induced salivary injury. MATERIALS AND METHODS MR sialography with salivary secretion stimulation was performed in 16 patients with head and neck malignancy before and after irradiation therapy. Multivariate (stepwise multiple regression) analysis was performed to analyze the nonstimulated and stimulated MR sialography findings and the clinical severity of xerostomia. RESULTS Multivariate analysis of the preirradiation study revealed no significant independent variables that could predict the clinical severity of xerostomia. In the postirradiation study, following regression with 2 independent variables (secretion response of the submandibular gland [rSG] and parotid gland visualization on stimulated MR sialography [sPG]) could explain 70% of the cases: xerostomia severity grade = 0.681 + 0.871 x rSG - 0.471 x sPG. CONCLUSIONS MR sialography is a useful method for visualization of salivary gland radiation injury and estimation of the severity of radiation-induced xerostomia. Insufficiency of secretion reserve at the irradiated submandibular gland has the strongest influence on xerostomia severity. Our investigation suggests that careful submandibular gland protection may lead to prevention and avoidance of radiation-induced xerostomia.
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Yoshizako T, Wada A, Hayashi T, Uchida K, Sumura M, Uchida N, Kitagaki H, Igawa M. Usefulness of diffusion-weighted imaging and dynamic contrast-enhanced magnetic resonance imaging in the diagnosis of prostate transition-zone cancer. Acta Radiol 2008; 49:1207-13. [PMID: 19031184 DOI: 10.1080/02841850802508959] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Conventional T2-weighted (T2-WI) magnetic resonance imaging (MRI) has poor sensitivity for prostate transition-zone (TZ) cancer detection. PURPOSE To retrospectively evaluate the clinical value of diffusion-weighted MRI (DW-MRI) and dynamic contrast-enhanced MRI (DCE-MRI) in combination with T2-WI for the diagnosis of TZ cancer. MATERIAL AND METHODS Twenty-six TZ cancers in 23 patients with at least one tumor (tumor size >10 mm) located predominantly in the TZ were included in the study. Sixteen peripheral-zone (PZ) cancers in 12 patients with PZ cancer but without TZ cancer (control group) were selected by step-section pathologic maps. All patients underwent MRI and radical prostatectomy. MRI was obtained by a 1.5T superconducting system with a phased-array coil. Imaging sequences were T2-WI with fat saturation (FST2-WI), DW-MRI (single-shot echoplanar image, b=0 and 1000 s/mm(2), apparent diffusion coefficient [ADC] map findings), and DCE-MRI (3D fast spoiled gradient recalled [SPGR], contrast medium [0.2 mmol/kg], total injection time 5 s, image acquisition 30, 60, and 90 s). Sensitivity, specificity, accuracy, and positive predictive value (PPV) for the diagnosis of TZ cancer were evaluated in four protocols: A) FST2-WI alone, B) FST2-WI plus DW-MRI, C) FST2-WI plus DCE-MRI, D) FST2-WI plus DW-MRI plus DCE-MRI. RESULTS Sensitivity, specificity, accuracy, and PPV in protocol A (FST2-WI alone) were 61.5%, 68.8%, 64.3%, and 76.2%, respectively. FST2-WI plus DW-MRI (protocol B) improved the sensitivity, specificity, accuracy, and PPV. In FST2-WI plus DW-MRI plus DCE-MRI (protocol D), the number of true-negative lesions increased and false-positive lesions decreased, and the sensitivity, specificity, accuracy, and PPV were 69.2%, 93.8%, 78.6%, and 94.7%, respectively. There was a significant difference between protocols A and D (P<0.05). CONCLUSION Adding DW-MRI to FST2-WI in the diagnosis of prostate TZ cancer increased the diagnostic accuracy. The addition of DCE-MRI may be an option to improve the specificity and PPV of diagnosing TZ cancer with FST2-WI and DW-MRI.
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