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Kato T, Kojima K, Sumikura M, Kuroiwa Y. Study on ammonia generation from digested sludge by subcritical water treatment. Water Sci Technol 2023; 87:614-619. [PMID: 36789707 DOI: 10.2166/wst.2023.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Organic sludge has recently attracted attention as a renewable energy source. While the organic matter contained in sludge can be utilized as various renewable energy sources, its nitrogen component has limited use. In this study, subcritical water treatment was conducted to recover ammonia from digested sludge. While ammonia recovered via stripping is limited to soluble components, subcritical water treatment can convert solid components and dissolved organic nitrogen sludge into ammonia. Digested sludge was treated at several reaction temperatures, reaction pressures, treatment times, and oxygen ratios to determine the ammonia generation rate. Among the conditions tested in this study, an ammonium generation rate of 84.0% was obtained at 400 °C, 10 MPa, a treatment time of 5 min, and at an oxygen ratio of 1.2.
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Affiliation(s)
- Takahiro Kato
- Shimizu Corporation, 3-4-17, Etchujima, Koto-ku, Tokyo 135-8530, Japan
| | - K Kojima
- Shimizu Corporation, 3-4-17, Etchujima, Koto-ku, Tokyo 135-8530, Japan
| | - M Sumikura
- Shimizu Corporation, 3-4-17, Etchujima, Koto-ku, Tokyo 135-8530, Japan
| | - Y Kuroiwa
- Shimizu Corporation, 3-4-17, Etchujima, Koto-ku, Tokyo 135-8530, Japan
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2
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Takemura M, Motegi M, Kuroiwa Y, Itai M, Taguchi K, Umetsu K, Uchida M, Kounoc S, Sato M, Masubuchi H, Yamaguchi A, Yamaguchi K, Ikeda K, Nakagawa J, Maeno T. Immune-related adverse events caused by treatment with pembrolizumab in a patient with lung cancer who infected influenza virus. Respir Med Case Rep 2021; 32:101361. [PMID: 33643837 PMCID: PMC7892985 DOI: 10.1016/j.rmcr.2021.101361] [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: 10/30/2020] [Revised: 01/19/2021] [Accepted: 01/29/2021] [Indexed: 12/11/2022] Open
Abstract
A 67-year-old man with stage IV B lung adenocarcinoma was treated with pembrolizumab. The patient was admitted to the hospital because of influenza on the day of the second cycle of pembrolizumab treatment. He was diagnosed with pneumonia and was treated with antiviral drugs and steroids. However, the patient eventually died. In this case, treatment with immune checkpoint inhibitors might have affected the immune response caused by influenza virus infection, that might have caused lung injury, which is an immune-related adverse event (irAE). Hence, it is important that, caution should be taken to prevent transmission of viral infection, and Therefore, it is important to prevent viral infections, but caution should also be paid to the possibility that infections may cause irAEs in patients with lung cancer.
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Affiliation(s)
- Masao Takemura
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
- Corresponding author. 813-1 Nakakurisu, Fujioka, 375-8503, Japan.
| | - Mitsuru Motegi
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
| | - Yuya Kuroiwa
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
| | - Miki Itai
- Department of Respiratory Medicine, National Hospital Organization Takasaki General Medical Center, Japan
| | - Kohei Taguchi
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
| | - Kazue Umetsu
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
| | - Megumi Uchida
- Department of Respiratory Medicine, National Hospital Organization Takasaki General Medical Center, Japan
| | - Shunichi Kounoc
- Department of Respiratory Medicine, Gunma University Graduate School of Medicine, Japan
| | - Mari Sato
- Department of Respiratory Medicine, Gunma University Graduate School of Medicine, Japan
| | - Hiroaki Masubuchi
- Department of Respiratory Medicine, National Hospital Organization Takasaki General Medical Center, Japan
| | - Aya Yamaguchi
- Department of Respiratory Medicine, Gunma University Graduate School of Medicine, Japan
| | - Koichi Yamaguchi
- Department of Respiratory Medicine, Gunma University Graduate School of Medicine, Japan
| | - Kana Ikeda
- Department of Respiratory Medicine, Fujioka General Hospital, Japan
| | - Junichi Nakagawa
- Department of Respiratory Medicine, National Hospital Organization Takasaki General Medical Center, Japan
| | - Toshitaka Maeno
- Department of Respiratory Medicine, Gunma University Graduate School of Medicine, Japan
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3
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Affiliation(s)
- M. Kowaka
- The Research Laboratories of Kirin Brewery Co., Ltd., Takasaki, Gumma Pref., Japan
| | - E. Kokubo
- The Research Laboratories of Kirin Brewery Co., Ltd., Takasaki, Gumma Pref., Japan
| | - Y. Kuroiwa
- The Research Laboratories of Kirin Brewery Co., Ltd., Takasaki, Gumma Pref., Japan
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4
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Goto Y, Nishida A, Nishiate H, Murata M, Lee CH, Miura A, Moriyoshi C, Kuroiwa Y, Mizuguchi Y. Effect of Te substitution on crystal structure and transport properties of AgBiSe2thermoelectric material. Dalton Trans 2018; 47:2575-2580. [DOI: 10.1039/c7dt04821a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduced lattice thermal conductivity of Te-substituted AgBiSe2was qualitatively described using the point defect scattering model.
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Affiliation(s)
- Y. Goto
- Department of Physics
- Tokyo Metropolitan University
- Hachioji 192-0397
- Japan
| | - A. Nishida
- Department of Physics
- Tokyo Metropolitan University
- Hachioji 192-0397
- Japan
| | - H. Nishiate
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - M. Murata
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - C. H. Lee
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - A. Miura
- Faculty of Engineering
- Hokkaido University
- Sapporo
- Japan
| | - C. Moriyoshi
- Department of Physical Science
- Hiroshima University
- Hiroshima 739-8526
- Japan
| | - Y. Kuroiwa
- Department of Physical Science
- Hiroshima University
- Hiroshima 739-8526
- Japan
| | - Y. Mizuguchi
- Department of Physics
- Tokyo Metropolitan University
- Hachioji 192-0397
- Japan
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Kimura K, Inoue K, Kuroiwa Y, Tanaka F, Takada M. Propagated but topologically distributed forebrain neurons expressing alpha-synuclein in aged macaques. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.518] [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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6
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Kawaguchi S, Takemoto M, Osaka K, Nishibori E, Moriyoshi C, Kubota Y, Kuroiwa Y, Sugimoto K. High-throughput powder diffraction measurement system consisting of multiple MYTHEN detectors at beamline BL02B2 of SPring-8. Rev Sci Instrum 2017; 88:085111. [PMID: 28863664 DOI: 10.1063/1.4999454] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In this study, we developed a user-friendly automatic powder diffraction measurement system for Debye-Scherrer geometry using a capillary sample at beamline BL02B2 of SPring-8. The measurement system consists of six one-dimensional solid-state (MYTHEN) detectors, a compact auto-sampler, wide-range temperature control systems, and a gas handling system. This system enables to do the automatic measurement of temperature dependence of the diffraction patterns for multiple samples. We introduced two measurement modes in the MYTHEN system and developed new attachments for the sample environment such as a gas handling system. The measurement modes and the attachments can offer in situ and/or time-resolved measurements in an extended temperature range between 25 K and 1473 K and various gas atmospheres and pressures. The results of the commissioning and performance measurements using reference materials (NIST CeO2 674b and Si 640c), V2O3 and Ti2O3, and a nanoporous coordination polymer are presented.
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Affiliation(s)
- S Kawaguchi
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - M Takemoto
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - K Osaka
- Industrial Application Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - E Nishibori
- Faculty of Pure and Applied Sciences, TIMS and CiRfSE, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - C Moriyoshi
- Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
| | - Y Kubota
- Department of Physical Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Y Kuroiwa
- Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
| | - K Sugimoto
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
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Taniguchi S, Kurita K, Kuroiwa Y, Tsuji C. A longitudinal study of coronectomy over five to nine years postoperation. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.943] [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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8
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Yoshida K, Yokoi T, Mori S, Achiwa M, Kuroiwa Y, Kurita K. Abnormal ossification of the hyoid bone in cleidocranial dysplasia rare case and literature review. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.1263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Kuroiwa Y, Nishioka K, Yokota S, Hirai T, Nishioka K, Fujino K, Iguchi Y. Subacute autonomic, endocrine, and cognitive disorders in Japanese girls at puberty after human papillomavirus vaccination. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.430] [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: 10/23/2022]
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10
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Hirai T, Iguchi Y, Uchiyama M, Kuroiwa Y, Nakamura I, Yokota S, Nishioka K. Single photon emission computed tomography findings after human papillomavirus (HPV) vaccination in Japan. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.407] [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: 11/27/2022]
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11
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Kurita K, Tsuji C, Kohara K, Goto S, Kuroiwa Y. Clinical evaluation of coronectomy cases deemed unfavorable within three years of the procedure. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.205] [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: 10/22/2022]
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12
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Kohara K, Kurita K, Kuroiwa Y, Goto S, Umemura E. Usefulness of mandibular third molar coronectomy assessed through clinical evaluation over three years of follow-up. Int J Oral Maxillofac Surg 2015; 44:259-66. [DOI: 10.1016/j.ijom.2014.10.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 09/02/2014] [Accepted: 10/03/2014] [Indexed: 11/27/2022]
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13
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Chiba R, Kuroiwa Y, Higashi K, Yamamoto K, Moribe K. Characterization of as-synthesized mesoporous silica using NMR and solid-state fluorescence spectroscopy. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50135-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Sanjo N, Higuma M, Hizume M, Nakamura Y, Kitamoto T, Yamada M, Hamaguchi T, Moriwaka F, Aoki M, Kuroiwa Y, Nishizawa M, Takeda M, Inuzuka T, Abe K, Murai H, Murayama S, Satoh K, Harada M, Saito N, Takumi I, Sakai K, Nozaki I, Noguchi-Shinohara M, Koyano S, Yokoseki A, Yoshiyama K, Takao M, Hayashi Y, Mizusawa H. Human prion diseases in Japan: A prospective surveillance from 1999. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1128] [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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15
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Takayanagi S, Amaha M, Satake K, Kuroiwa Y, Igarashi H, Murata A. STUDIES ON FROZEN BEER PRECIPITATES I. FORMATION AND GENERAL CHARACTERS. Journal of the Institute of Brewing 2013. [DOI: 10.1002/j.2050-0416.1969.tb03213.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Kuroda K, Miyahara H, Ye M, Eremeev SV, Koroteev YM, Krasovskii EE, Chulkov EV, Hiramoto S, Moriyoshi C, Kuroiwa Y, Miyamoto K, Okuda T, Arita M, Shimada K, Namatame H, Taniguchi M, Ueda Y, Kimura A. Experimental verification of PbBi2Te4 as a 3D topological insulator. Phys Rev Lett 2012; 108:206803. [PMID: 23003165 DOI: 10.1103/physrevlett.108.206803] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Indexed: 06/01/2023]
Abstract
The experimental evidence is presented of the topological insulator state in PbBi2Te4. A single surface Dirac cone is observed by angle-resolved photoemission spectroscopy with synchrotron radiation. Topological invariants Z2 are calculated from the ab initio band structure to be 1;(111). The observed two-dimensional isoenergy contours in the bulk energy gap are found to be the largest among the known three-dimensional topological insulators. This opens a pathway to achieving a sufficiently large spin current density in future spintronic devices.
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Affiliation(s)
- K Kuroda
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Miyatake S, Miyake N, Touho H, Nishimura-Tadaki A, Kondo Y, Okada I, Tsurusaki Y, Doi H, Sakai H, Saitsu H, Shimojima K, Yamamoto T, Higurashi M, Kawahara N, Kawauchi H, Nagasaka K, Okamoto N, Mori T, Koyano S, Kuroiwa Y, Taguri M, Morita S, Matsubara Y, Kure S, Matsumoto N. Homozygous c.14576G>A variant of RNF213 predicts early-onset and severe form of moyamoya disease. Neurology 2012; 78:803-10. [PMID: 22377813 DOI: 10.1212/wnl.0b013e318249f71f] [Citation(s) in RCA: 212] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE RNF213 was recently reported as a susceptibility gene for moyamoya disease (MMD). Our aim was to clarify the correlation between the RNF213 genotype and MMD phenotype. METHODS The entire coding region of the RNF213 gene was sequenced in 204 patients with MMD, and corresponding variants were checked in 62 pairs of parents, 13 mothers and 4 fathers of the patients, and 283 normal controls. Clinical information was collected. Genotype-phenotype correlations were statistically analyzed. RESULTS The c.14576G>A variant was identified in 95.1% of patients with familial MMD, 79.2% of patients with sporadic MMD, and 1.8% of controls, thus confirming its association with MMD, with an odds ratio of 259 and p < 0.001 for either heterozygotes or homozygotes. Homozygous c.14576G>A was observed in 15 patients but not in the controls and unaffected parents. The incidence rate for homozygotes was calculated to be >78%. Homozygotes had a significantly earlier age at onset compared with heterozygotes or wild types (median age at onset 3, 7, and 8 years, respectively). Of homozygotes, 60% were diagnosed with MMD before age 4, and all had infarctions as the first symptom. Infarctions at initial presentation and involvement of posterior cerebral arteries, both known as poor prognostic factors for MMD, were of significantly higher frequency in homozygotes than in heterozygotes and wild types. Variants other than c.14576G>A were not associated with clinical phenotypes. CONCLUSIONS The homozygous c.14576G>A variant in RNF213 could be a good DNA biomarker for predicting the severe type of MMD, for which early medical/surgical intervention is recommended, and may provide a better monitoring and prevention strategy.
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Affiliation(s)
- S Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Johkura K, Nakae Y, Kudo Y, Yoshida TN, Kuroiwa Y. Early diffusion MR imaging findings and short-term outcome in comatose patients with hypoglycemia. AJNR Am J Neuroradiol 2012; 33:904-9. [PMID: 22268090 DOI: 10.3174/ajnr.a2903] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The relationship between the MR imaging features and clinical outcomes in patients with hypoglycemic encephalopathy has always been evaluated retrospectively. The aim of this study was to prospectively evaluate whether MR imaging features of patients presenting with hypoglycemic coma are predictive of short-term (1-week) outcomes. MATERIALS AND METHODS Subjects were 36 consecutive patients with hypoglycemia who were in a comatose state on arrival at our hospital from April 2006 to March 2010. MR imaging findings on arrival in relation to the patients' clinical course after glucose infusion were evaluated. RESULTS Thirteen of the 36 patients showed no MR imaging abnormalities on arrival. DWI revealed focal lesions involving the internal capsule in 13 patients and lesions involving bilateral hemispheric white matter in 10 patients. After glucose administration, the patients without lesions and patients with focal internal capsule lesions recovered completely within 1 day. However, patients with diffuse white matter lesions did not recover even within 1 week despite glucose administration. There was no statistical difference in the initial blood glucose levels among patients with the various types of MR imaging findings. CONCLUSIONS On early MR imaging, hypoglycemic brain injury may first appear in the internal capsule and then spread into the hemispheric white matter. The absence of a lesion or the presence of a focal internal capsule lesion may suggest a good outcome. However, diffuse hemispheric white matter lesions may indicate a poor 1-week outcome.
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Affiliation(s)
- K Johkura
- Department of Neurology and Stroke Center, Hiratsuka Kyosai Hospital, 9 –11 Oiwake, Hiratsuka 254-8502, Japan.
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Moriyoshi C, Matsuoka Y, Sato H, Sasai R, Kuroiwa Y. Crystal structure of anion exchangeable Mg2+-Al3+layered double hydroxides. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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Kuroiwa Y, Ohkubo H, Moriyoshi C, Inoue N, Okamoto T. Crystal structure of BaTiO 3-based ceramics in MLCCs under applied high voltage. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081815] [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: 11/10/2022] Open
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21
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Taji K, Moriyoshi C, Kuroiwa Y, Moriwake H, Bhattacharjee S, Pandey D. Origin of giant tetragonal lattice strain in (1− x)BiFeO 3- xPbTiO 3system. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081827] [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: 11/11/2022] Open
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22
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Johkura K, Susuki K, Hakii Y, Kawauchi Y, Hasegawa O, Kuroiwa Y. Reversible CT findings in systemic lupus erythematosus. Eur J Neurol 2011. [DOI: 10.1111/j.1468-1331.1997.tb00418.x] [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: 11/30/2022]
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23
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Baba Y, Kuroiwa Y, Ikeda Y, Ootaka T, Kawashima M, Inoe M, Sugita H. P24-16 An EEG study on healthy human subjects while watching the 3D video contents on the 3D display. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61013-9] [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: 11/16/2022]
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24
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Uematsu E, Kishida H, Iwahashi Y, Koyano S, Baba Y, Kuroiwa Y. P5-4 Electrophysiological analysis of Myerson sign in Parkinson's disease. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60526-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Ishino F, Kuroiwa Y, Miyoshi N, Kobayashi S, Kohda T, Kaneko-Ishino T. Subtraction-hybridization method for the identification of imprinted genes. Methods Mol Biol 2009; 181:101-12. [PMID: 12843444 DOI: 10.1385/1-59259-211-2:101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Imprinted genes show monoallelic expression from either the paternal or maternal genome (1,2), and their regulated expression is usually associated with the existence of parentally differentially methylated regions on genomic DNAs (3,4). Because of this, essentially two different approaches, using either cDNA or genomic DNA as starting material (5) have been developed for systematic isolation of imprinted genes. In this chapter, we describe a subtraction-hybridization method (6-8) as an example of the former approach. Both parthenogenetic embryos and androgenetic embryos (9,10) are the most suitable biological materials for the subtraction or detection of imprinted genes. However, it is difficult to obtain a large amount of such special materials because only a small number of these embryos develop to the d 10 stage (9,10). Thus, polymerase chain reaction (PCR)-based techniques, such as the differential display (11-13) and subtraction-hybridization methods, are necessary to accomplish this experiment. The subtraction-hybridization method has been successfully applied for isolation of both paternally expressed genes (Pegs) (6,14,15) and maternally expressed genes (Megs) (7), and it allows cDNA libraries to be made from a very small amount of biological material. We are convinced that this method can be applied in many fields of biological science.
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Affiliation(s)
- F Ishino
- Gene Research Center, Tokyo Institute of Technology, Yokohama, Japan
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Okinaka S, Reese HH, Katsuki S, Ueki K, Kuroiwa Y, Araki S, Shiraki H, Kurland LT. The prevalence of multiple sclerosis and other neurological diseases in Japan. Acta Neurol Scand 2009; 42:68-76. [PMID: 5909422 DOI: 10.1111/j.1600-0404.1966.tb02004.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Kuroiwa Y, Itoyama Y, Shibasaki H, Tobimatsu S, Igata A. Minimal record of disability in multiple sclerosis--application to Japanese patients. Acta Neurol Scand Suppl 2009; 101:100-4. [PMID: 6594899 DOI: 10.1111/j.1600-0404.1984.tb02560.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The Japanese version of Minimal Record of Disability in MS was applied to randomly selected Japanese MS cases in order to determine the applicability of the scales and also to get the general trends of the disabilities of Japanese MS. The scales did reflect impairment of functional systems, in which visual system was most severe. The average DSS was 4/10. Incapacity status or environment status were well correlated with impairment of pyramidal or bowel/bladder systems. They also correlated with DSS. Duration of the illness was correlated with the severity of impairment, disability or handicap. Accumulation of such a core data base may help in management of the MS problems in the world.
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Abstract
BACKGROUND In elderly people, chronic dizziness is endemic. However, chronic dizziness of unknown origin is difficult to assess. OBJECTIVE To investigate whether mild unrecognised benign paroxysmal positional vertigo (BPPV) is a cause of isolated chronic dizziness in the elderly. PATIENTS AND METHODS The prevalence of extremely weak, horizontal, direction changing apogeotropic positional nystagmus (HAPN) that had not been detected by conventional examination was evaluated in 200 patients with isolated chronic dizziness and in 155 age matched control subjects without dizziness. RESULTS A high prevalence of weak HAPN was found in patients with isolated chronic dizziness (98/200 (49.0%)) compared with the prevalence in control subjects without dizziness (25/155 (16.1%); p<0.0001). Symptoms improved in some patients by daily positional exercise for BPPV. CONCLUSION Because BPPV is the most common cause of dizziness in the elderly, and HAPN is a characteristic of horizontal canal BPPV, our findings suggest that mild persistent BPPV is a possible cause of chronic dizziness of otherwise unknown origin in the elderly.
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Affiliation(s)
- K Johkura
- Department of Neurology, Hiratsuka Kyosai Hospital, 9-11 Oiwake, Hiratsuka 254-8502, Japan.
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29
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Kuroiwa Y, Terado Y, Moriyoshi C, Aoyagi S, Nishibori E, Sakata M, Takata M. Thermal motion of atoms in cubic structure of perovskites and ferroelectric phase transitions. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308095330] [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: 11/11/2022] Open
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30
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Takata M, Tanaka H, Kuroiwa Y, Moritomo Y, Kato K, Yoshida F. Electrostatic potential and electric field imaging by MEM powder diffraction data analysis. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308096992] [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: 11/10/2022] Open
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31
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Eguchi H, Kuroiwa Y, Matsui A, Sada M, Nagaya N, Kawano S. Intra-bone marrow cotransplantation of donor mesenchymal stem cells in pig-to-NOD/SCID mouse bone marrow transplantation facilitates short-term xenogeneic hematopoietic engraftment. Transplant Proc 2008; 40:574-7. [PMID: 18374132 DOI: 10.1016/j.transproceed.2008.02.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We directly injected porcine donor mesenchymal stem cells (MSC) into murine bone marrow (BM) cavities to examine the effects of intra-BM cotransplantation of MSC in pig-to-NOD/SCID mouse bone marrow transplantation (BMT) on xenogeneic engraftment. Porcine MSC prepared by aspiration of iliac BM of miniature swine were identified as CD90+CD29+CD45-CD31- and shown to differentiate into osteoblastocytes and adipocytes. A few weeks after expansion, MSC (1 x 10(6) cells/mouse) were directly injected with BM cells (30 x 10(6) cells/mouse) obtained from vertebrae through a microsyringe into BM cavities of both tibiae of NOD/SCID mice after 3-Gy total body irradiation. Controls were injected with only BM cells. Porcine chimerisms of BM cells of tibiae (injection site) and of femurs (non-injection site) in recipient mice were evaluated with porcine and murine cell markers using FACS. The chimerism of porcine class I+ cells at the injection site in the MSC group and the controls were 3.45%, 1.43%, and 0.17%, and 2.27%, 0.81%, and 0.1% at 1, 3, and 6 weeks, respectively. The chimerism at the noninjection site in the MSC group and the controls were 0.21%, 1.34%, and 0.11%, and 0.06%, 0.42%, and 0.09% at 1, 3, and 6 weeks, respectively. The total chimerisms of injection site in the MSC group to 6 weeks were significantly higher than those in the control group (1.60% vs 0.99%; P < .05), whereas the chimerism of the noninjection site in MSC group was remarkably higher at 3 weeks. In conclusion, intra-BM cotransplantation of porcine donor MSC in pig-to-NOD/SCID mouse BMT improved short-term xenogeneic engraftment, presumably due to humoral factors.
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Affiliation(s)
- H Eguchi
- Center for International Relations, Osaka University Graduate School of Medicine, Osaka, Japan.
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32
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Tasaki M, Umemura T, Maeda M, Ishii Y, Okamura T, Inoue T, Kuroiwa Y, Hirose M, Nishikawa A. Safety assessment of ellagic acid, a food additive, in a subchronic toxicity study using F344 rats. Food Chem Toxicol 2008; 46:1119-24. [DOI: 10.1016/j.fct.2007.10.043] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2007] [Revised: 10/05/2007] [Accepted: 10/21/2007] [Indexed: 10/22/2022]
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33
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Ohtani K, Usuda J, Ichinose S, Ishizumi T, Hirata T, Inoue T, Maehara S, Imai K, Kubota M, Tsunoda Y, Yamada M, Tsutsui H, Yamada K, Kuroiwa Y, Furukawa K, Okunaka T, Kato H. High expression of GADD-45α and VEGF induced tumor recurrence via upregulation of IL-2 after photodynamic therapy using NPe6. Int J Oncol 2008. [DOI: 10.3892/ijo.32.2.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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34
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Ohtani K, Usuda J, Ichinose S, Ishizumi T, Hirata T, Inoue T, Maehara S, Imai K, Kubota M, Tsunoda Y, Yamada M, Tsutsui H, Yamada K, Kuroiwa Y, Furukawa K, Okunaka T, Kato H. High expression of GADD-45alpha and VEGF induced tumor recurrence via upregulation of IL-2 after photodynamic therapy using NPe6. Int J Oncol 2008; 32:397-403. [PMID: 18202762] [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: 05/25/2023] Open
Abstract
NPe6 is a novel second-generation photosensitizer used for photodynamic therapy (PDT). PDT using NPe6 and diode laser (664 nm) induces cell death, inflammatory reactions, immunological responses and damage to the microvasculature. In this study, we evaluated the influence of the immunological responses and of enhanced angiogenesis on the anti-tumor effect of NPe6-PDT using cytokine-overexpressing Lewis lung carcinoma (LLC), LLC-IL-2 cells both in vitro and in vivo. We showed by DNA microarray analysis in vitro that IL-2 and GADD-45alpha (growth arrest and DNA damage 45 alpha) mRNA expressions were induced by 3 h after NPe6-PDT applied at a dose killing 90% of the cells (LD90). IL-2-overexpressing cells (LLC/IL-2 cells) were resistant to the loss of clonogenicity as compared to the parental LLC cells in vitro. Furthermore, in female C57BL/6 mice, NPe6-PDT produced a cure rate of 66.7% in LLC tumors, whereas the cure rate was only 16.6% in LLC/IL-2 tumors, and overexpression of IL-2 caused failure of NPe6-PDT, with tumor recurrence, in vivo. These results suggest that IL-2 expression may play an unfavorable role in attenuation of the antitumor effect of NPe6-PDT. It has been reported that the expression of vascular endothelial growth factor (VEGF), in particular, may cause tumor recurrence after PDT and exert unfavorable effect in relation to attenuate the anti-tumor activity of PDT. Results of immunohistochemical analysis of LLC/IL-2 tumors have revealed that the expressions of GADD-45alpha and VEGF are induced in these tumors after PDT, and in particular, 12 h after PDT, the expression levels were much higher as compared with those in the LLC tumors. The results of our studies using in vitro and in vivo models suggest that the cell death caused by PDT was inhibited by induction of GADD-45alpha expression and that tumor recurrence was promoted by the enhancement of VEGF expression mediated by IL-2 upregulation. Therefore, it is speculated that the use of an IL-2 inhibitor may improve the efficacy of NPe6-PDT.
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Affiliation(s)
- K Ohtani
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan
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35
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Okunaka T, Usuda J, Ichinose S, Hirata H, Ohtani K, Maehara S, Inoue T, Imai K, Kubota M, Tsunoda Y, Kuroiwa Y, Tsutsui H, Furukawa K, Nishio K, Kato H. A possible relationship between the anti-cancer potency of photodynamic therapy using the novel photosensitizer ATX-s10-Na(II) and expression of the vascular endothelial growth factor in vivo. Oncol Rep 2007; 18:679-83. [PMID: 17671719 DOI: 10.3892/or.18.3.679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
ATX-s10-Na(II) is a novel second-generation photo-sensitizer for photodynamic therapy (PDT). PDT using ATX-s10 and diode laser (670 nm) induces an apoptotic response, inflammatory reaction, immune reaction and damage to the microvasculature. In particular, the vascular shut-down effect plays an important role in the anti-tumor activity of ATX-s10-PDT. It has been reported that PDT induces hypoxia and expression of the vascular endothelial growth factor (VEGF) via the hypoxia-inducible factor 1 (HIF1)-alpha pathway. We hypothesized that the expression of VEGF may cause tumor recurrence after PDT and exert unfavorable effect against the anti-tumor activity of ATX-s10-PDT. In this study, we showed by DNA microarray analysis in vitro that VEGF mRNA expression was induced 3 h after laser irradiation in ATX-s10-PDT. We compared the anti-tumor activity of ATX-s10-PDT against lung cancer cell lines SBC-3 and SBC-3/VEGF, the latter overexpressing VEGF; there was no significant difference in the sensitivity to the PDT between the two cell lines as assessed by clonogenic assay. Furthermore, no statistically significant difference in the anti-tumor effect of PDT, as measured by tumor cures, was found between SBC-3 and SBC-3/VEGF tumors in female Balb/c-nu/nu nude mice in vivo. In conclusion, ATX-s10-PDT may prevent tumor recurrence despite induction of VEGF and promotion of tumor angiogenesis, which are known to enhance tumor proliferation and survival.
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Affiliation(s)
- T Okunaka
- Respiratory Disease Center, Sanno Hospital, International University of Health and Welfare, Tokyo, Japan
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Abstract
Considerable progress has been made in methods for production of transgenic livestock; beginning with pronuclear microinjection over 20 years ago. New methods, including the use of viral vectors, sperm-mediated gene transfer and somatic cell cloning, have overcome many of the limitations of pronuclear microinjection. It is now possible to not only readily make simple insertional genetic modifications, but also to accomplish, more complex, homozygous gene targeting and artificial chromosome transfer in livestock.
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Affiliation(s)
- J M Robl
- Hematech Inc, Sioux Falls, SD 57106, USA.
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37
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Shimamura M, Shimizu M, Yagami T, Funabashi T, Kimura F, Kuroiwa Y, Misu Y, Goshima Y. L-3,4-dihydroxyphenylalanine-induced c-Fos expression in the CNS under inhibition of central aromatic L-amino acid decarboxylase. Neuropharmacology 2006; 50:909-16. [PMID: 16504219 DOI: 10.1016/j.neuropharm.2006.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Revised: 12/16/2005] [Accepted: 01/04/2006] [Indexed: 12/01/2022]
Abstract
L-3,4-dihydroxyphenylalanine (DOPA) is a neurotransmitter candidate. To map the DOPAergic system functionally, DOPA-induced c-Fos expression was detected under inhibition of central aromatic L-amino acid decarboxylase (AADC). In rats treated with a central AADC inhibitor, DOPA significantly increased the number of c-Fos-positive nuclei in the paraventricular nuclei (PVN) and the nucleus tractus solitarii (NTS), and showed a tendency to increase in the supraoptic nuclei (SON), but not in the striatum. On the other hand, DOPA with a peripheral AADC inhibitor elevated the level of c-Fos-positive nuclei in the four regions, suggesting that DOPA itself induces c-Fos expression in the SON, PVN and NTS. In rats treated with 6-hydroxydopamine (6-OHDA) to lesion the nigrostriatal dopamine (DA) pathway, DOPA significantly induced c-Fos expression in the four regions under the inhibition of peripheral AADC. However, under the inhibition of central AADC, DOPA did not significantly increase the number of c-Fos-positive nuclei in the four regions, suggesting that DOPA at least in part induces c-Fos expression through its conversion to DA. It was likely that the 6-OHDA lesion enhanced the response to DA, but attenuated that to DOPA itself. In conclusion, we proposed that the SON, PVN and NTS include target sites for DOPA itself.
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Affiliation(s)
- M Shimamura
- Department of Neurology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
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38
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Kamitani T, Kuroiwa Y, Susuki K, Kishida H, Miyazaki Y, Yuki N. Rhinolalia after diarrhea: a sole motor symptom occurring in post-infectious neuropathy associated with anti-ganglioside antibodies. Eur J Neurol 2006; 13:203-4. [PMID: 16490057 DOI: 10.1111/j.1468-1331.2006.01135.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Kuroiwa Y, Nishikawa A, Imazawa T, Kitamura Y, Kanki K, Ishii Y, Umemura T, Hirose M. A subchronic toxicity study of dunaliella carotene in F344 rats. Food Chem Toxicol 2006; 44:138-45. [PMID: 16095791 DOI: 10.1016/j.fct.2005.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2005] [Revised: 06/20/2005] [Accepted: 06/28/2005] [Indexed: 11/17/2022]
Abstract
Dunaliella carotene, extracted from dunaliella alga (Dunaliella bardawil or Dunaliella salina), for use as a food-coloring agent, has beta-carotene as its mainly constituent. As there have been no reports of toxicological evaluation, a 90-day subchronic toxicity study was here performed in F344 rats at dose levels of 0 (control), 0.63%, 1.25%, 2.5% and 5% in powdered basal diet. The average daily intakes of dunaliella carotene were 352, 696, 1420 and 2750 mg/kg/day, respectively, for males, and 370, 748, 1444 and 2879 mg/kg/day for females. No mortality or treatment-related clinical signs were observed throughout the experimental period in any of the groups. Body weight gain was slightly but significantly (p < 0.05) reduced from week 5 to the end of the experiment in 2.5% and 5% males. Increased PLT were observed in 1.25% and 5% males, and 2.5% and 5% females. Significant elevations or tendencies for increase in serum T. Cho and Ca were observed in all treated males and females, with clear dose-dependence in males. Organ weight measurement and histopathological observation revealed no toxicological changes. Based on growth suppression, no-observed-adverse-effect-levels (NOAELs) were estimated to be 1.25% (696 mg/kg/day) for males and 5% (2879 mg/kg/day) for females. As increases in serum Ca were observed in the lowest group in both sexes, a no-observed-effect level (NOEL) could not be determined in this study.
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Affiliation(s)
- Y Kuroiwa
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
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40
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Kuroiwa Y, Nishikawa A, Imazawa T, Kitamura Y, Kanki K, Umemura T, Hirose M. Lack of carcinogenicity of d-xylose given in the diet to F344 rats for two years. Food Chem Toxicol 2005; 43:1399-404. [PMID: 15919148 DOI: 10.1016/j.fct.2005.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2004] [Revised: 03/22/2005] [Accepted: 03/31/2005] [Indexed: 11/16/2022]
Abstract
The two year carcinogenicity of D-xylose was examined in groups of 50 male and 50 female F344 rats at dietary doses of 0% (control), 2.5% and 5%. The doses were selected on the basis of results from a 13-week subchronic toxicity study. Growth suppression and soft feces were observed in male and female rats of the 5% group. However, no significant differences from the controls were noted with regard to clinical signs, mortality and hematological findings. Decrease in absolute weight and increase in relative weight of the brain in males, and decrease of absolute kidney weight in females were observed in the 5% group, but there were no remarkable histopathological changes. A variety of tumors developed in all groups, including the controls, but all were histologically similar to those known to occur spontaneously in F344 rats, and no statistically significant increase in the incidence of any type of neoplastic lesion was found for either sex in the treated groups. Thus, it was concluded that, under the present experimental conditions, D-xylose is not carcinogenic to F344 rats.
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Affiliation(s)
- Y Kuroiwa
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan
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41
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Aoyagi S, Toda S, Nishibori E, Kuroiwa Y, Adachi T, Ohishi Y, Takata M, Sakata M. High pressure effect on bonding nature in KMnF 3. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305080645] [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: 11/10/2022] Open
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42
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Kuroiwa Y, Nishikawa A, Imazawa T, Kanki K, Kitamura Y, Umemura T, Hirose M. Lack of subchronic toxicity of an aqueous extract of Agaricus blazei Murrill in F344 rats. Food Chem Toxicol 2005; 43:1047-53. [PMID: 15833380 DOI: 10.1016/j.fct.2005.02.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2004] [Revised: 01/31/2005] [Accepted: 02/15/2005] [Indexed: 10/25/2022]
Abstract
Agaricus blazei Murrill, an edible mushroom, is widely used as a functional food due to its possible medicinal effects. Aqueous extracts are also used as food additive to provide an agreeable bitter taste. As a part of its safety assessment, the present 90-day subchronic toxicity study was performed in F344 rats. To establish a no-observed-adverse-effect level (NOAEL), rats were fed powder diet containing A. blazei Murrill aqueous extract at dose levels of 0 (basal diet), 0.63, 1.25, 2.5 and 5% (maximum) for 90 days. During the experiment, there were no remarkable changes in general appearance and no deaths occurred in any experimental group. Although serum blood urea nitrogen was slightly but significantly increased in males of the 2.5 and 5% groups, no related histopathological changes were observed in the kidney, and serum creatinine levels were rather reduced, suggesting the increase of blood urea nitrogen to be of little toxicological significance. Hematology, organ weight measurement and histopathological observation revealed no test compound-related toxicological changes. In conclusion, A. blazei Murrill extract even at 5% in the diet (2654 mg/kgb.w./day for male rats and 2965 mg/kgb.w./day for female rats) did not cause remarkable adverse effects in F344 rats. Thus, the NOAEL was concluded to be 5% in the diet.
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Affiliation(s)
- Y Kuroiwa
- Division of Pathology, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
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43
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Kakeda M, Hiratsuka M, Nagata K, Kuroiwa Y, Kakitani M, Katoh M, Oshimura M, Tomizuka K. Human artificial chromosome (HAC) vector provides long-term therapeutic transgene expression in normal human primary fibroblasts. Gene Ther 2005; 12:852-6. [PMID: 15750614 DOI: 10.1038/sj.gt.3302483] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Human artificial chromosomes (HACs) segregating freely from host chromosomes are potentially useful to ensure both safety and duration of gene expression in therapeutic gene delivery. However, low transfer efficiency of intact HACs to the cells has hampered the studies using normal human primary cells, the major targets for ex vivo gene therapy. To elucidate the potential of HACs to be vectors for gene therapy, we studied the introduction of the HAC vector, which is reduced in size and devoid of most expressed genes, into normal primary human fibroblasts (hPFs) with microcell-mediated chromosome transfer (MMCT). We demonstrated the generation of cytogenetically normal hPFs harboring the structurally defined and extra HAC vector. This introduced HAC vector was retained stably in hPFs without translocation of the HAC on host chromosomes. We also achieved the long-term production of human erythropoietin for at least 12 weeks in them. These results revealed the ability of HACs as novel options to circumvent issues of conventional vectors for gene therapy.
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Affiliation(s)
- M Kakeda
- Pharmaceutical Research Laboratories, Pharmaceutical Division, Kirin Brewery Co., Ltd, Takasaki-shi, Gunma, Japan
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44
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Kamitani T, Kuroiwa Y, Hidaka M. Isolated hypesthesia in the right V2 and V3 dermatomes after a midpontine infarction localised at an ipsilateral principal sensory trigeminal nucleus. J Neurol Neurosurg Psychiatry 2004; 75:1508-9. [PMID: 15377715 PMCID: PMC1738764 DOI: 10.1136/jnnp.2004.038026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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45
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Wada M, Kimura M, Daimon M, Kurita K, Kato T, Johmura Y, Johkura K, Kuroiwa Y, Sobue G. An unusual phenotype of McLeod syndrome with late onset axonal neuropathy. J Neurol Neurosurg Psychiatry 2003; 74:1697-8. [PMID: 14638894 PMCID: PMC1757430 DOI: 10.1136/jnnp.74.12.1697] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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46
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Affiliation(s)
- T Kamitani
- Department of Neurology, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004 Japan.
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47
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Robl JM, Kasinathan P, Sullivan E, Kuroiwa Y, Tomizuka K, Ishida I. Artificial chromosome vectors and expression of complex proteins in transgenic animals. Theriogenology 2003; 59:107-13. [PMID: 12499022 DOI: 10.1016/s0093-691x(02)01262-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Artificial chromosome vectors are autonomous, replicating DNA sequences containing a centromere, two telomeres and origins of replication. Artificial chromosomes have been proposed as possible vectors for transferring very large sequences of DNA into animals. Our goal has been to insert the entire human heavy- and light-chain immunoglobulin loci into cattle as a step in developing a production system for large quantities of human therapeutic polyclonal antibodies. A mitotically stable fragment of chromosome 14, containing the human heavy-chain locus, was identified. A chromosome cloning system was used to transfer the human lambda locus from an unstable chromosome 22 fragment to the chromosome 14 fragment to create a human artificial chromosome (HAC) carrying both immunoglobulin loci. The HAC vector was introduced into bovine primary fibroblasts. Selected fibroblast clones were rejuvenated and expanded by producing cloned fetuses. Cloned fetal cells were selected and recloned to produce 21 healthy, transchromosomic (Tc) calves. Four were analyzed and shown to functionally rearrange both heavy- and light-chain human immunoglobulin loci and produce human polyclonal antibodies. These results demonstrate the feasibility of using HAC vectors for production of transgenic livestock. More importantly, Tc cattle containing human immunoglobulin genes may be used to produce novel human polyclonal therapeutics.
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Affiliation(s)
- J M Robl
- Hematech, LLC, 4401 South Technology Drive, Sioux Falls, SD 57106, USA.
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48
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Koyano S, Iwabuchi K, Yagishita S, Kuroiwa Y, Uchihara T. Paradoxical absence of nuclear inclusion in cerebellar Purkinje cells of hereditary ataxias linked to CAG expansion. J Neurol Neurosurg Psychiatry 2002; 73:450-2. [PMID: 12235319 PMCID: PMC1738092 DOI: 10.1136/jnnp.73.4.450] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Degeneration of cerebellar cortex is one of the principal features of hereditary ataxias linked to expansion of CAG repeat. In an attempt to clarify possible correlation between neuronal depletion and neuronal intranuclear inclusions, both triggered by the pathological expansion of CAG repeat, cerebellar sections from SCA1, SCA2, SCA3, and DRPLA cases were immunostained with anti-ubiquitin or anti-expanded polyglutamine antibody (1C2) and were screened for the presence of neuronal intranuclear inclusions. Although the degree of cerebellar degeneration varied greatly, cerebellar Purkinje cells were uniformly characterised by the absence of neuronal intranuclear inclusion. Complete absence of neuronal intranuclear inclusion in Purkinje cells is apparently paradoxical and hardly explained if neuronal intranuclear inclusion formation is positively correlated to a mechanism accelerating neuronal death. It may, otherwise, suggest an intrinsic link between neuronal intranuclear inclusion formation and neurodegeneration in opposite directions in human Purkinje cells, more or less affected in these CAG repeat disorders.
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Affiliation(s)
- S Koyano
- Department of Neurology, Yokohama City University, Yokohama, Japan
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49
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Yamashita I, Kawaji H, Atake T, Kuroiwa Y, Sawada A. Synchrotron X-ray powder diffraction study on successive phase transitions in AZnPO 4( A:Rb, Cs). Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302090992] [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: 11/10/2022] Open
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Kuroiwa Y, Yoshida H, Ohshima T, Shinohara T, Ohguma A, Kazuki Y, Oshimura M, Ishida I, Tomizuka K. The use of chromosome-based vectors for animal transgenesis. Gene Ther 2002; 9:708-12. [PMID: 12032693 DOI: 10.1038/sj.gt.3301754] [Citation(s) in RCA: 16] [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: 11/08/2022]
Abstract
This article summarizes our efforts to use chromosome-based vectors for animal transgenesis, which may have a benefit for overcoming the size constraints of cloned transgenes in conventional techniques. Since the initial trial for introducing naturally occurring human chromosome fragments (hCFs) with large and complex immunogulobulin (Ig) loci into mice we have obtained several lines of trans-chromosomic (Tc) mice with transmittable hCFs. As expected the normal tissue-specific expression of introduced human genes was reproduced in them by inclusion of essential remote regulatory elements. Recent development of 'chromosome cloning' technique that enable construction of human artificial chromosomes (HACs) containing a defined chromosomal region should prevent the introduction of additional genes other than genes of interest and thus enhance the utility of chromosome vector system. Using this technique a panel of HACs harboring inserts ranging in size from 1.5 to 10 Mb from three human chromosomes (hChr2, 7, 22) has been constructed. Tc animals containing the HACs may be valuable not only as a powerful tool for functional genomics but also as an in vivo model to study therapeutic gene delivery by HACs.
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Affiliation(s)
- Y Kuroiwa
- Pharmaceutical Research Laboratory, Kirin Brewery Co Ltd, Gunma, Japan
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