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Inoue S, Higashino T, Nikaido K, Miyata R, Matsuoka S, Tanaka M, Tsuzuki S, Horiuchi S, Kondo R, Sagayama R, Kumai R, Sekine D, Koyanagi T, Matsubara M, Hasegawa T. Control of Polar/Antipolar Layered Organic Semiconductors by the Odd-Even Effect of Alkyl Chain. Adv Sci (Weinh) 2024; 11:e2308270. [PMID: 38268432 PMCID: PMC10987142 DOI: 10.1002/advs.202308270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/18/2023] [Indexed: 01/26/2024]
Abstract
Some rodlike organic molecules exhibit exceptionally high layered crystallinity when composed of a link between π-conjugated backbone (head) and alkyl chain (tail). These molecules are aligned side-by-side unidirectionally to form self-organized polar monomolecular layers, providing promising 2D materials and devices. However, their interlayer stacking arrangements have never been tunable, preventing the unidirectional arrangements of molecules in whole crystals. Here, it is demonstrated that polar/antipolar interlayer stacking can be systematically controlled by the alkyl carbon number n, when the molecules are designed to involve effectively weakened head-to-head affinity. They exhibit remarkable odd-even effect in the interlayer stacking: alternating head-to-head and tail-to-tail (antipolar) arrangement in odd-n crystals, and uniform head-to-tail (polar) arrangement in even-n crystals. The films show excellent field-effect transistor characteristics presenting unique polar/antipolar dependence and considerably improved subthreshold swing in the polar films. Additionally, the polar films present enhanced second-order nonlinear optical response along normal to the film plane. These findings are key for creating polarity-controlled optoelectronic materials and devices.
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Affiliation(s)
- Satoru Inoue
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Toshiki Higashino
- Research Institute for Advanced Electronics and Photonics (RIAEP)National Institute of Advanced Industrial Science and Technology (AIST)TsukubaIbaraki305‐8565Japan
| | - Kiyoshi Nikaido
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Ryo Miyata
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Satoshi Matsuoka
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Mutsuo Tanaka
- Department of Life & Green ChemistrySaitama Institute of TechnologyFukayaSaitama369‐0293Japan
| | - Seiji Tsuzuki
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Sachio Horiuchi
- Research Institute for Advanced Electronics and Photonics (RIAEP)National Institute of Advanced Industrial Science and Technology (AIST)TsukubaIbaraki305‐8565Japan
| | - Ryusuke Kondo
- Department of PhysicsOkayama UniversityOkayama700‐8530Japan
| | - Ryoko Sagayama
- Photon FactoryInstitute of Materials Structure ScienceHigh Energy Accelerator Research Organization (KEK)TsukubaIbaraki305‐0801Japan
| | - Reiji Kumai
- Photon FactoryInstitute of Materials Structure ScienceHigh Energy Accelerator Research Organization (KEK)TsukubaIbaraki305‐0801Japan
| | - Daiki Sekine
- Department of PhysicsTohoku UniversitySendai980‐8578Japan
| | | | - Masakazu Matsubara
- Department of PhysicsTohoku UniversitySendai980‐8578Japan
- Center for Science and Innovation in SpintronicsTohoku UniversitySendai980‐8577Japan
- PRESTOJapan Science and Technology Agency (JST)Kawaguchi332‐0012Japan
| | - Tatsuo Hasegawa
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
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Zhang Z, Ikeda M, Utsumi M, Yamamoto Y, Goto H, Eguchi R, Liao YF, Ishii H, Takabayashi Y, Hayashi K, Kondo R, Kobayashi TC, Kubozono Y. Pressure Dependence of the Structural and Superconducting Properties of the Bi-Based Superconductor Bi 2Pd 3Se 2. Inorg Chem 2024; 63:2553-2561. [PMID: 38253512 DOI: 10.1021/acs.inorgchem.3c03737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The structural and superconducting properties of the Bi-based compound Bi2Pd3Se2 were investigated over a wide pressure range. The prepared Bi2Pd3Se2 sample was a superconductor with a superconducting transition temperature, Tc, of approximately 3.0 K, which differed from a previous report (Tc of less than 1.0 K). At ambient pressure, the powder X-ray diffraction (XRD) pattern of the Bi2Pd3Se2 sample was consistent with that previously reported for Bi2Pd3Se2. The Rietveld method was used to refine the crystal structure, which had a space group of C2/m (No. 12), as reported previously. This compound showed no clear anomaly due to the charge-density-wave (CDW) transition, as seen from the temperature dependence of magnetic susceptibility. However, the temperature dependence of electrical resistivity indicated a clear anomaly, presumably because of the CDW transition in the low-pressure range; the CDW transition temperature was approximately 230 K. The XRD patterns of the Bi2Pd3Se2 sample were measured at 0.160-22.7 GPa, and the patterns were well analyzed by both the Le Bail and Rietveld refinement methods, showing no structural phase transitions in the above pressure range. The pressure dependence of Tc of Bi2Pd3Se2 was recorded based on the temperature dependence of the electrical resistance, which showed an almost constant Tc at 0-13.7 GPa, and the Tc-pressure (p) behavior was fully discussed.
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Affiliation(s)
- Zhiyan Zhang
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Mitsuki Ikeda
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Masaki Utsumi
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Yuki Yamamoto
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Hidenori Goto
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Ritsuko Eguchi
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Yen-Fa Liao
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Hirofumi Ishii
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Yasuhiro Takabayashi
- Department of Physical Science and Technology, Nagoya Institute of Technology, Nagoya 466-8585, Japan
| | - Koichi Hayashi
- Department of Physical Science and Technology, Nagoya Institute of Technology, Nagoya 466-8585, Japan
| | - Ryusuke Kondo
- Department of Physics, Okayama University, Okayama 700-8530, Japan
| | | | - Yoshihiro Kubozono
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
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Kumagawa M, Matsumoto N, Miura K, Ogawa M, Takahashi H, Hatta Y, Kondo R, Koizumi N, Takei M, Moriyama M. Correlation between alterations in blood flow of malignant lymphomas after induction chemotherapies and clinical outcomes: a pilot study utilising contrast-enhanced ultrasonography for early interim evaluation of lymphoma treatment. Clin Radiol 2021; 76:550.e9-550.e17. [PMID: 33691950 DOI: 10.1016/j.crad.2021.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
AIM To clarify the utility of contrast-enhanced ultrasonography (CEUS) for interim evaluation of response to chemotherapy in lymphoma treatment. MATERIALS AND METHODS CEUS was performed both before (day 0) and after the treatment (7 and/or 14 days), and a time-intensity curve was obtained. The patients were divided into two groups (complete remission [CR] group and non-CR group) according to the results of conventional response evaluation, and peak enhancement (PE), time to peak enhancement, perfusion index (PI), the total area under the curve during wash-in (AUC-in), and the total AUC were compared between the groups. RESULTS Among 27 patients with various types of lymphoma, the median change ratio of PE and PI at day 7 evaluation were significantly different between the CR group and the non-CR group (0.81 versus 1.39, p=0.017 for PE and 0.92 versus 2.09, p=0.010 for PI). The change ratio of PE < 1.09 (specificity: 86%; sensitivity, 88%) and PI < 1.65 (specificity: 86%; sensitivity: 94%) distinguished CR from non-CR. Patients who achieved a PE change ratio <1.09 or a PI change ratio <1.65 had significantly better estimated progression-free survival (p<0.001). CONCLUSION The present study demonstrated that changes in tumour perfusion parameters evaluated with CEUS at 1 week after the treatment initiation were significantly different between lymphoma patients in CR group and non-CR group. Alterations in perfusion parameters evaluated via CEUS could impact the prognosis of lymphoma patients.
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Affiliation(s)
- M Kumagawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - N Matsumoto
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan.
| | - K Miura
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan.
| | - M Ogawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - H Takahashi
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - Y Hatta
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - R Kondo
- Department of Mechanical Engineering and Intelligent Systems, Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu-shi, Tokyo, Japan
| | - N Koizumi
- Department of Mechanical Engineering and Intelligent Systems, Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu-shi, Tokyo, Japan
| | - M Takei
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - M Moriyama
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
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Uwai Y, Kondo R, Suzuki T, Kawasaki T, Nabekura T. Potent Inhibition of Biphasic Tubular Reabsorption of Lithium by Acetazolamide and Foscarnet in Rats. Physiol Res 2020; 69:645-651. [PMID: 32584131 DOI: 10.33549/physiolres.934285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Lithium is mainly excreted into urine, and a large fraction of lithium filtered through glomeruli is reabsorbed in the proximal tubule. However, the mechanisms responsible for lithium reabsorption remain unclear. We previously reported that the reabsorption of lithium was biphasic in rats, and that foscarnet inhibited lithium reabsorption with a high affinity type. We herein evaluated the effects of acetazolamide and foscarnet on the renal excretion of lithium in rats treated with lithium chloride at 2 doses. In rats intravenously injected with a bolus of 25 mg/kg lithium chloride, acetazolamide facilitated the urinary excretion of lithium, and increased the fractional excretion of lithium from 0.446 to 0.953, near the theoretically maximum value. At a dose of 2.5 mg/kg lithium chloride, the fractional excretion of lithium was 0.241 in control rats, 0.420 in rats administered acetazolamide, and 0.976 in rats administered acetazolamide and foscarnet. These results showed the potent inhibition of lithium reabsorption by acetazolamide and foscarnet in rats. And, it was exhibited that the effects of acetazolamide on lithium reabsorption differed with the dosages of lithium administered.
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Affiliation(s)
- Y Uwai
- Department of Pharmaceutics, School of Pharmacy, Aichi Gakuin University, Kusumoto, Chikusa, Nagoya, Japan.
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Watanabe S, Matsumoto N, Koshio J, Ishida A, Tanaka T, Abe T, Ishikawa D, Shoji S, Nozaki K, Ichikawa K, Kondo R, Otsubo A, Aoki A, Kajiwara T, Koyama K, Miura S, Yoshizawa H, Kikuchi T. MA21.05 Phase II Trial of the Combination of Alectinib with Bevacizumab in ALK-Positive Nonsquamous Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.676] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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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Naito Y, Kawahara A, Okabe Y, Ishida Y, Sadashima E, Murata K, Takase Y, Abe H, Yamaguchi T, Tanigawa M, Mihara Y, Kondo R, Kusano H, Nakayama M, Shimamatsu K, Yano H, Akiba J. SurePath ® LBC improves the diagnostic accuracy of intrahepatic and hilar cholangiocarcinoma. Cytopathology 2018; 29:349-354. [PMID: 29723910 DOI: 10.1111/cyt.12565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2018] [Indexed: 01/22/2023]
Abstract
INTRODUCTION The current study aimed to compare cytology using SurePath® (SP)-LBC and biliary tissue histology (BTH) for the diagnosis of biliary disease. METHODS Between January 2014 and December 2016, 57 patients underwent endoscopic retrograde cholangiopancreatography for the diagnosis of biliary disease. Biliary cytological samples were processed using SP-LBC and subsequently BTH was performed. A final diagnosis was confirmed by surgery (23 malignant cases) and clinical follow-up (34 benign and malignant cases): 18 extrahepatic cholangiocarcinoma; 17 intrahepatic/hilar cholangiocarcinoma (intra/H-CC); eight other malignant disease; and 14 benign biliary disease. The diagnoses made using SP-LBC and BTH were classified into four categories: (1) benign; (2) indeterminate; (3) suspicious for malignancy/malignant; and (4) inadequate. In addition, diagnostic accuracy was compared between SP-LBC and BTH. RESULTS Although 23% (13/57) of BTH samples were classified as inadequate, all SP-LBC cases were classified as adequate. Among 43 malignant cases, 11 normal, four indeterminate and 28 suspicious for malignancy/malignant were found using SP-LBC (26%, 9% and 65%, respectively), in contrast to 10 inadequate, nine normal, 10 indeterminate and 14 suspicious for malignancy/malignant observed using BTH (23%, 21%, 23%, and 33%, respectively). The identification of malignant cells was strikingly different between SP-LBC and BTH. Furthermore, limited to intra/H-CC, accuracy was significantly higher using SP-LBC than using BTH (P < .001). CONCLUSIONS SP-LBC of the biliary tract is a useful and reliable method for diagnosing biliary malignant disease and has an advantage over BTH for detecting malignant cells and accurately diagnosing intra/H-CC.
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Affiliation(s)
- Y Naito
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan.,Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - A Kawahara
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Y Okabe
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Y Ishida
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - E Sadashima
- Shin-Koga Hospital, Medical Corporation Tenjinkai, Kurume, Japan
| | - K Murata
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Y Takase
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - H Abe
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - T Yamaguchi
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - M Tanigawa
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Y Mihara
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - R Kondo
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - H Kusano
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - M Nakayama
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - K Shimamatsu
- Department of Pathology, Omuta City Hospital, Omuta, Japan
| | - H Yano
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - J Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
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Watanabe S, Tanaka H, Nozaki K, Sato M, Arita M, Mishina Y, Shoji S, Ichikawa K, Kondo R, Sakagami T, Koya T, Kikuchi T. P2.07-007 Retrospective Analysis of Antitumor Effects and Biomarkers of Nivolumab in NSCLC Patients with EGFR Mutations. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.066] [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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Koyama K, Saida Y, Abe T, Satokata M, Mishina Y, Sato K, Shoji S, Tanaka T, Nozaki K, Ichikawa K, Miyabayashi T, Ota T, Fujimori F, Ito R, Kondo R, Hiura T, Okajima M, Miura S, Watanabe S, Matsumoto N, Tanaka H, Kikuchi T. P2.03-015 Efficacy of EGFR-TKIs for EGFR Mutant NSCLC Patients with Central Nervous System Metastases: A Retrospective Analysis. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1266] [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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Masuda R, Iijima T, Kondo R, Itoda Y, Matsuhashi M, Hashimoto S, Kohira T, Kobayashi N, Okazaki H. Preceding haemorrhagic shock as a detrimental risk factor for respiratory distress after excessive allogeneic blood transfusion. Vox Sang 2017; 113:51-59. [PMID: 29023857 DOI: 10.1111/vox.12560] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/22/2017] [Accepted: 07/06/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES Whether transfusion-associated circulatory overload arises as a simple result of over-transfusion or requires another trigger remains unclear. Here, we examined whether respiratory distress could be reproduced by massive transfusion alone in an animal model. MATERIALS AND METHODS A total of 20 anaesthetized swine were equipped with monitors. Allogeneic blood was obtained from 10 donor swine. A 4-stage loading protocol with each stage equivalent to 25% of the blood volume (BV) in the recipient swine was then used to infuse crystalloid (CR), hydroxyethyl starch (HES) or allogeneic blood (TR) (n = 5 each). The five remaining animals were subjected to a haemorrhagic shock (HS) prior to an allogeneic blood transfusion (TRS). RESULTS The PaO2 /FiO2 (P/F) ratio did not decrease to the level of respiratory distress in either the CR group or the HES group after loading with a volume corresponding to 100% of the recipient BV. However, the TRS and TR groups exhibited significant reductions in the P/F ratio after fluid overloading (227 ± 29 and 267 ± 133, respectively). Blood transfusion after HS expanded the blood volume, but over-transfusion alone did not. HS was accompanied by an increase in the white blood cell count. CONCLUSION The lung and the heart can tolerate volume overloads with HES, CR and even transfused blood. However, a preceding HS may induce an inflammatory response, making the lung vulnerable to subsequent blood overloads. In this study, a preceding haemorrhagic shock mediated respiratory distress following massive transfusion in a swine model. (247 words).
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Affiliation(s)
- R Masuda
- Department of Transfusion Medicine, The University of Tokyo, Ohta, Japan.,Division of Anesthesiology, Department of Perioperative Medicine, School of Dentistry, Showa University, Tokyo, Japan
| | - T Iijima
- Department of Transfusion Medicine, The University of Tokyo, Ohta, Japan.,Division of Anesthesiology, Department of Perioperative Medicine, School of Dentistry, Showa University, Tokyo, Japan
| | - R Kondo
- Department of Cardiovascular Surgery, The University of Tokyo, Ohta, Japan
| | - Y Itoda
- Department of Cardiovascular Surgery, The University of Tokyo, Ohta, Japan
| | - M Matsuhashi
- Department of Transfusion Medicine, The University of Tokyo, Ohta, Japan
| | - S Hashimoto
- Haemopoietic Stem Cell General Management Division, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - T Kohira
- Haemopoietic Stem Cell General Management Division, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - N Kobayashi
- R&D Center, Nihon Kohden Corporation Co., Ltd., Shinjuku, Japan
| | - H Okazaki
- Department of Transfusion Medicine, The University of Tokyo, Ohta, Japan
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Satoh H, Kondo R, Shinoda T, Idaka S, Ishigami K, Shiotani S. Diets with no or low amounts of dietary fiber can reduce small intestinal ulcers induced by non-steroidal anti-inflammatory drugs in dogs. J Physiol Pharmacol 2016; 67:563-573. [PMID: 27779477] [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] [Received: 04/07/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
Recent progress in endoscopic techniques has revealed that non-steroidal anti-inflammatory drugs (NSAIDs) often cause ulcers in the small intestine in humans, but effective therapy is not available at present. In the present study, we investigated the effects of feeding condition and the amount of dietary fiber (DF) in the diet on the formation of gastrointestinal ulcers induced by NSAIDs in dogs. Several types of diets containing various percentages of DF were given to dogs. Indomethacin (1 or 3 mg/kg, p.o.), ketoprofen (2 mg/kg, s.c.), or fulnixin (1 mg/kg, s.c.) was administered once daily at 10 a.m. after a morning meal or without a morning meal (fasted condition) for 3 - 7 days. Gastrointestinal lesions were examined 24 h after the final dose of the drugs. When indomethacin (3 mg/kg) was administered after a morning meal (fed condition) for 7 days, it produced many lesions in the small intestine. However, when it was given in the fasted condition without the morning meal, the lesions were markedly decreased. All the NSAIDs given after feeding of regular dry food containing 6% DF once a day for 3 days produced many lesions in the small intestine. The lesions were decreased or increased in dogs given prescription diets containing low DF (1.1%) and high DF (15.4%), respectively. Furthermore, lesions were not observed in dogs given canned diet containing very low DF (< 0.1%), whereas lesions appeared again in dogs given canned diet supplemented with cellulose (3 or 10%) but not with pectin (10%). These results suggested that both feeding condition and insoluble DF, such as cellulose in the diet, play an important role in the formation of NSAID-induced small intestinal lesions, and that a diet with no or low amounts of DF may decrease gastrointestinal side-effects associated with the use of NSAIDs.
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Affiliation(s)
- H Satoh
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.
| | - R Kondo
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - T Shinoda
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - S Idaka
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - K Ishigami
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - S Shiotani
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
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Shiiba T, Kondo R, Harti S, Mello A, Cauwenbergh G, Liu J. 1563 A topical botanical lotion improves recovery from chemotherapy alopecia and persistent hair issues in cancer survivors through local modulation of apoptosis and inflammation. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30653-0] [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: 10/22/2022]
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Nagahata S, Nagahata M, Obara M, Kondo R, Minagawa N, Sato S, Sato S, Mouri W, Saito S, Kayama T. Wall Enhancement of the Intracranial Aneurysms Revealed by Magnetic Resonance Vessel Wall Imaging Using Three-Dimensional Turbo Spin-Echo Sequence with Motion-Sensitized Driven-Equilibrium: A Sign of Ruptured Aneurysm? Clin Neuroradiol 2014; 26:277-83. [DOI: 10.1007/s00062-014-0353-z] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 10/03/2014] [Indexed: 10/24/2022]
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Kaneda M, Yokoi K, Ito S, Niwa H, Takao M, Kondo R, Arimura T, Saito Y. The value of pleural lavage cytology examined during surgery for primary lung cancer. Eur J Cardiothorac Surg 2012; 41:1335-41. [DOI: 10.1093/ejcts/ezr224] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Endo H, Sato K, Kondo R, Matsumoto Y, Takahashi A, Tominaga T. Tuberothalamic artery infarctions following coil embolization of ruptured posterior communicating artery aneurysms with posterior communicating artery sacrifice. AJNR Am J Neuroradiol 2011; 33:500-6. [PMID: 22194388 DOI: 10.3174/ajnr.a2828] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Ischemic complications after coil embolization of the PcomA aneurysms are not thoroughly understood, especially in cases in which the PcomA is sacrificed. Our purpose was to examine the preoperative angiographic features and pattern of postoperative cerebral infarctions exhibited by patients who underwent embolization of ruptured PcomA aneurysms with PcomA sacrifice. MATERIALS AND METHODS A retrospective review identified 14 patients with ruptured PcomA aneurysms who underwent embolization of the aneurysms in combination with PcomA sacrifice. Preoperative angiographic data, including the Allcock test, postoperative DWI, and neurologic status, were examined. RESULTS Elimination of the aneurysm was complete in all cases. Postoperative DWI indicated 7 cases with infarctions (infarction group) and 7 cases without infarctions (noninfarction group). All patients in the infarction group developed infarctions in the vicinity of the tuberothalamic artery. In all 14 cases, a preoperative Allcock test demonstrated a retrograde filling of the PcomA through the P1 segment. The incidence of negative visualizations of the P1 segment on vertebral angiograms was significantly higher in the infarction group (100%) than in the noninfarction group (0%; P = .00058). The mean PcomA diameters, PcomA/P1 ratios, and aneurysm sizes observed in the infarction group were significantly greater than those in the noninfarction group (P < .05, P < .01, and P < .02, respectively). Tuberothalamic artery infarction caused hemiparesis and memory disturbance, which were associated with unfavorable outcomes. CONCLUSIONS After the coil occlusion of ruptured PcomA aneurysms with PcomA sacrifice, tuberothalamic artery infarctions tended to occur in cases exhibiting negative visualization of the P1 segment, even when collateral flow was observed with the Allcock test.
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Affiliation(s)
- H Endo
- Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Japan.
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Nagahata M, Kondo R, Saito S, Takemura A, Hatayama T. Which factors increase procedural thromboembolic events in patients with unruptured paraclinoid internal carotid artery aneurysm treated by coil embolization? Neuroradiol J 2011; 24:712-4. [PMID: 24059765 DOI: 10.1177/197140091102400507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/03/2011] [Indexed: 11/17/2022] Open
Abstract
We analyzed the factors which increase the frequency of procedural thromboembolic events during coil embolization of unruptured paraclinoid internal carotid artery aneurysms. Neurologically symptomatic complications did not occur in our series. Silent hyperintense lesions on postoperative DWI were frequently detected after the coiling procedure in which we needed to withdraw the unreleased coil. Patient's age, sex, aneurysm diameter, packing density, use of balloon-assisted technique, and exchanging maneuver of microcatheter during the procedure did not increase the frequency of silent thromboembolic events.
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Affiliation(s)
- M Nagahata
- Department of Radiology and Radiation Oncology, Hirosaki University Graduate School of Medicine; Hirosaki, Japan -
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Kondo R, Suyalatu, Tsutsumi Y, Doi H, Nomura N, Hanawa T. Microstructure and mechanical properties of Pt-added and Pd-added Zr-20Nb alloys and their metal release in 1mass% lactic acid solution. Materials Science and Engineering: C 2011. [DOI: 10.1016/j.msec.2011.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Arung ET, Furuta S, Ishikawa H, Tanaka H, Shimizu K, Kondo R. Melanin Biosynthesis Inhibitory and Antioxidant Activities of Quercetin-3-O-beta-D-glucoside Isolated from Allium cepa. Z NATURFORSCH C 2011. [DOI: 10.5560/znc.2011.66c0209] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Harazono K, Kondo R, Sakai K. Bleaching of Hardwood Kraft Pulp with Manganese Peroxidase from Phanerochaete sordida YK-624 without Addition of MnSO(inf4). Appl Environ Microbiol 2010; 62:913-7. [PMID: 16535279 PMCID: PMC1388804 DOI: 10.1128/aem.62.3.913-917.1996] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In vitro bleaching of an unbleached hardwood kraft pulp was performed with partially purified manganese peroxidase (MnP) from the fungus Phanerochaete sordida YK-624 without the addition of MnSO(inf4) in the presence of oxalate, malonate, or gluconate as manganese chelator. When the pulp was treated without the addition of MnSO(inf4), the pulp brightness increased by about 10 points in the presence of 2 mM oxalate, but the brightness did not significantly increase in the presence of 50 mM malonate, a good manganese chelator. Residual MnP activity decreased faster during the bleaching with MnP without MnSO(inf4) in the presence of malonate than in the presence of oxalate. Oxalate reduced MnO(inf2) which already existed in the pulp or was produced from Mn(sup2+) by oxidation with MnP and thus supplied Mn(sup2+) to the MnP system. The presence of gluconate, produced by the H(inf2)O(inf2)-generating enzyme glucose oxidase, also improved the pulp brightness without the addition of MnSO(inf4), although treatment with gluconate was inferior to that with oxalate with regard to increase of brightness. It can be concluded that bleaching of hardwood kraft pulp with MnP, using manganese originally existing in the pulp, is possible in the presence of oxalate, a good manganese chelator and reducing reagent.
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Kondo R, Kurashiki K, Sakai K. In vitro bleaching of hardwood kraft pulp by extracellular enzymes excreted from white rot fungi in a cultivation system using a membrane filter. Appl Environ Microbiol 2010; 60:921-6. [PMID: 16349219 PMCID: PMC201411 DOI: 10.1128/aem.60.3.921-926.1994] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To clarify the role of excreted extracellular enzymes during long-term incubation in a pulp biobleaching system with white rot fungi, we developed a cultivation system in which a membrane filter is used; this membrane filter can prevent direct contact between hyphae and kraft pulp, but allows extracellular enzymes to attack the kraft pulp. Phanerochaete sordida YK-624 brightened the pulp 21.4 points to 54.0% brightness after a 5-day in vitro treatment; this value was significantly higher than the values obtained with Phanerochaete chrysosporium and Coriolus versicolor after a 7-day treatment. Our results indicate that cell-free, membrane-filtered components from the in vitro bleaching system are capable of delignifying unbleached kraft pulp. Obvious candidates for filterable reagents capable of delignifying and bleaching kraft pulp are peroxidase and phenoloxidase proteins. The level of secreted manganese peroxidase activity in the filterable components was substantial during strain YK-624 in vitro bleaching. A positive correlation between the level of manganese peroxidase and brightening of the pulp was observed.
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Affiliation(s)
- R Kondo
- Department of Forest Products, Faculty of Agriculture, Kyushu University, Fukuoka 812, Japan
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20
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Wöhrer S, Rabitsch W, Shehata M, Kondo R, Esterbauer H, Streubel B, Sillaber C, Raderer M, Jaeger U, Zielinski C, Valent P. Mesenchymal stem cells in patients with chronic myelogenous leukaemia or bi-phenotypic Ph+ acute leukaemia are not related to the leukaemic clone. Anticancer Res 2007; 27:3837-3841. [PMID: 18225540] [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]
Abstract
BACKGROUND Human mesenchymal stem cells (MSCs) are thought to be multipotent cells which primarily reside in the bone marrow. Besides their well-known ability to replicate as undifferentiated cells and to differentiate into diverse lineages of mesenchymal tissues, they were recently suggested to also give rise to haematopoietic and leukaemic/cancer stem cells. In this study, the relationship between MSCs and leukemic stem cells in patients with either chronic myelogenous leukaemia (CML) or the more primitive variant, Ph+ bi-phenotypic leukaemia was investigated. PATIENTS AND METHODS Cultured MSCs from 5 patients with CML and 3 patients with bi-phenotypic Ph+ leukaemia, all of them positive for BCP-ABL, were analysed with conventional cytogenetics, fluorescence in situ hybridisation (FISH) and polymerase chain reaction (PCR) for the presence of t(9;22) and BCR-ABL. MSCs were characterised phenotypically with surface markers (+CD73, +CD90, +CD105, -CD34, -CD45) and functionally through their potential to differentiate into both adipocytes and osteoblasts. RESULTS MSCs could be cultivated from seven patients. These cells were BCR-ABL negative when analysed with conventional cytogenetics and FISH. Further cytogenetic analysis revealed a normal set of chromosomes without any aberrations. Two patients were BCR-ABL-positive when analysed with PCR, probably as a result of MSC contamination with macrophages. CONCLUSION MSCs in patients with CML or Ph+ bi-phenotypic leukaemia are not related to the malignant cell clone.
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Affiliation(s)
- S Wöhrer
- Department of Internal Medicine 1, Division of Bone Marrow Transplantation, Medical University of Vienna, Vienna, Austria.
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Shiina T, Ito T, Kondo R, Yoshida K, Amano J, Takasuna K, Yamanda T, Yamanda T, Koizumi T, Kubo K. 6621 POSTER A bi-weekly administration of gemcitabine and docetaxel in patients with non-small cell lung cancer. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71449-0] [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] Open
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22
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Noguchi M, Kakuma T, Tomiyasu K, Itoh K, Konishi F, Kumamoto S, Shimizu K, Kondo R, Matsuoka K. POS-02.75: A randomized clinical trial of an ethanol extract of Ganoderma lucidum (edible and medicinal mushroom) in men with lower urinary tract symptoms. Urology 2007. [DOI: 10.1016/j.urology.2007.06.716] [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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23
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Lackner EM, Krauth MT, Kondo R, Rebuzzi L, Eigenberger K, Vales A, Kornek GV, Zielinski CC, Valent P. Expression and secretion of VEGF in solid tumor cells is mediated by the mammalian target of rapamycin (mTOR). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.14123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
14123 Background: Tumor progression and metastasis formation are often associated with enhanced angiogenesis and with the formation of malignant effusions. Vascular endothelial growth factor (VEGF) is a key regulator of angiogenesis and a mediator of vascular permeability. We here describe that VEGF is produced and secreted by neoplastic cells in various solid tumors and its production mediated through mTOR. Methods and Results: As assessed by ELISA, the VEGF protein was detected in supernatants of cell lines derived from breast cancer (MDA-MB231), pancreatic carcinoma (BxPC-3), lung cancer (A-427), colon carcinoma (HCT8), and cholangiocellular carcinoma (EGI-1). In addition, VEGF was detected in supernatants of primary tumor cells obtained from malignant effusions in various malignancies (breast cancer, n=4; pancreatic cancer, n=1; ovarial cancer, n=1; parotic carcinoma, n=1; oesophageal carcinoma, n=1). In each case, VEGF protein was detectable in neoplastic cells by immunocytochemistry, and was found to accumulate in supernatants of cultured tumor cells over time, suggesting constant production and secretion. Correspondingly, as assessed by RT-PCR, primary tumor cells as well as the cell lines tested were found to express VEGF mRNA in a constitutive manner. Since mTOR is a well known regulator of VEGF synthesis, we applied rapamycin on primary neoplastic cells and on tumor cell lines. Rapamycin (20–200 nM) was found to counteract the production and secretion of VEGF in all tumor cells tested (VEGF in supernatants in cultures supplemented with rapamycin at 100 nM compared to control=100% on day 6: MDA-MB231: 11.8±0.2%; BxPC-3: 23.6±18.8%; A-427: 30.1±3.4%; HCT8 17.2±0.5%; EGI-1 28.4±1.1%; p<0.05). By contrast, neither rapamycin nor VEGF were found to modulate growth of primary tumor cells or the growth of the tumor cell lines tested. Conclusions: Various human tumor cells express and secrete VEGF. VEGF production is mediated through mTOR. These observations may have implications for the design of new treatment approaches attempting to counteract VEGF production/secretion and thus VEGF-dependent angiogenesis and effusion- formation in solid tumors. No significant financial relationships to disclose.
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Affiliation(s)
- E. M. Lackner
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - M. T. Krauth
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - R. Kondo
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - L. Rebuzzi
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - K. Eigenberger
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - A. Vales
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - G. V. Kornek
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - C. C. Zielinski
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
| | - P. Valent
- Medical University Vienna, Vienna, Austria; University of Veterinary Medicine, Vienna, Austria
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Kurai M, Kondo R, Yoshida K, Hyogotani A, Kobayashi N, Amano J. [Tracheobronchial injury]. Kyobu Geka 2006; 59:996-1000. [PMID: 17058661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We studied 6 cases of tracheobronchial injury due to the blunt chest truma in our department. All patients were male of 19 to 60 years of age. Injured sites were main bronchus in 2, tracheobronchial portion in 2, cervical trachea and main bronchus in 1, cervical trachea in 1. In a case of cervical tracheal injury and 2 cases of tracheobronchial injury, emergent operation was performed on the day of accident. Other cases with the main bronchial injury underwent conservative treatment at first, but subsequent bronchoplasty was necessary for them due to the bronchial stenosis. After the surgery for 2 cases of tracheobronchial injury, mechanical ventilation with double lumen tube was continued to reduce the airway pressure for the anastomotic sites. In conclusion, early surgical treatment is recommended for the airway injury and the respiratory management using double lumen tube after surgery may be helpful in preventing trouble at the anastomosis.
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Affiliation(s)
- Makoto Kurai
- Department of Second Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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25
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Fujita W, Awaga K, Kondo R, Kagoshima S. A one-dimensional coordination polymer, BBDTA.InCl4: possible spin-Peierls transition with high critical temperature of 108 K. J Am Chem Soc 2006. [PMID: 16669653 DOI: 10.1021/ja060979] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have studied the crystal structure and magnetic properties of the organic radical cation salt, BBDTA.InCl4. This material formed a one-dimensional coordination polymer. Magnetic measurements indicated the spin-Peierls transition-like behavior at 108 K, which was higher than those typically observed for the other organic spin-Peierls materials. The structural aspects of the lattice distortion from X-ray diffraction measurements at 50 K have been discussed.
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Affiliation(s)
- Wataru Fujita
- Research Center of Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan.
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26
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Fujita W, Awaga K, Kondo R, Kagoshima S. A One-Dimensional Coordination Polymer, BBDTA·InCl4: Possible Spin-Peierls Transition with High Critical Temperature of 108 K. J Am Chem Soc 2006; 128:6016-7. [PMID: 16669653 DOI: 10.1021/ja060979+] [Citation(s) in RCA: 53] [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: 11/30/2022]
Abstract
We have studied the crystal structure and magnetic properties of the organic radical cation salt, BBDTA.InCl4. This material formed a one-dimensional coordination polymer. Magnetic measurements indicated the spin-Peierls transition-like behavior at 108 K, which was higher than those typically observed for the other organic spin-Peierls materials. The structural aspects of the lattice distortion from X-ray diffraction measurements at 50 K have been discussed.
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Affiliation(s)
- Wataru Fujita
- Research Center of Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan.
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27
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Horiguchi T, Miyazaki J, Ohira D, Watanabe Y, Hayashi N, Kobayashi K, Torigoe T, Fukumoto K, Ito T, Hirose M, Sasaki Y, Shiga M, Kondo R, Handa M, Tachikawa S. Usefulness of sparfloxacin against Chlamydia pneumoniae infection in patients with bronchial asthma. J Int Med Res 2006; 33:668-76. [PMID: 16372585 DOI: 10.1177/147323000503300609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The efficacy of sparfloxacin (SPFX) for the control of bronchial asthma was evaluated in 26 patients with suspected Chlamydia pneumoniae infection. Patients were randomly allocated to receive SPFX 200 mg/day (n = 14) or control treatment (n = 12) for 21 days. Significant improvements in serum C-reactive protein levels, and significant decreases in peripheral eosinophil counts, serum eosinophil cationic protein (ECP) and sputum ECP were observed in the SPFX-treated group at day 21. SPFX-treated patients also had a significantly reduced frequency of asthma symptoms, reduced inhalant beta2-stimulant use, and significant increases in morning peak expiratory flow. At the end of the study, C. pneumoniae was undetectable in two SPFX-treated patients who underwent polymerase chain reaction testing, but one control patient who was tested still had detectable levels of C. pneumoniae. These results suggest that SPFX could be used to control bronchial asthma in patients with suspected persistent C. pneumoniae infection.
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Affiliation(s)
- T Horiguchi
- Department of Respiratory Internal Medicine, Second Training Hospital of Fujita Health University, Nagoya, Japan.
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Chairattanamanokorn P, Imai T, Kondo R, Ukita M, Prasertsan P. Screening Thermotolerant White-Rot Fungi for Decolorization of Wastewaters. Appl Biochem Biotechnol 2006; 128:195-204. [PMID: 16632880 DOI: 10.1385/abab:128:3:195] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2005] [Revised: 08/31/2005] [Accepted: 09/07/2005] [Indexed: 11/11/2022]
Abstract
To select a thermotolerant fungal strain for decolorization of wastewaters, ligninolytic enzyme production (lignin peroxidase, manganese peroxidase [MnP], and laccase), decolorization, and removal of total phenol and chemical oxygen demand (COD) were detected. Thirty-eight fungal strains were studied for enzyme production at 35 and 43 degrees C on modified Kirk agar medium including 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and MnCl2. Thirteen strains grew on manganese-containing agar and provided green color on ABTS-containing agar plates under culture at 43 degrees C. Decolorization of wastewater from alcohol distillery (WAD) by these strains was compared under static culture at 43 degrees C, and Pycnoporus coccineus FPF 97091303 showed the highest potential. Thereafter, immobilized mycelia were compared with free mycelia for WAD decolorization under culture conditions of 43 degrees C and 100 rpm. The immobilized mycelia on polyurethane foam enhanced the ligninolytic enzyme production as well as total phenol and color removal. At about the same COD removal, MnP and laccase produced by immobilized mycelia were 2 and 19 times higher than by free mycelia; the simultaneous total phenol and color removal were 3.1 and 1.5 times higher than the latter. Moreover, decolorization of synthesis dye wastewater was carried out at 43 degrees C and 100 rpm. More than 80% of 300 mg/L of reactive blue-5 was decolorized by the immobilized mycelia within 1 to 2 d for four cycles.
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Affiliation(s)
- P Chairattanamanokorn
- Department of Civil and Environmental Engineering, Yamaguchi University, Tokiwadai 2-16-1, Yamaguchi, 755-8611, Japan
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Chairattanamanokorn P, Imai T, Kondo R, Sekine M, Higuchi T, Ukita M. Decolorization of alcohol distillery wastewater by thermotolerant white-rot fungi. Prikl Biokhim Mikrobiol 2005; 41:662-7. [PMID: 16358757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
To detect thermotolerant fungus strain for decolorization of alcohol distillery wastewater (WAD), 38 fungus strains were studied. Ability of ligninolytic enzyme production was examined at 35 and 43 degrees C on agar media containing 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) and MnCl2. At 43 degrees C, four of Pycnoporus coccineus strains showed their higher potential for WAD decolorization both on agar media and in liquid media. Immobilized mycelia on polyurethane foam removed total phenol about threefold higher than free mycelia did in shaking condition at 43 degrees C. Moreover, color removed by immobilized mycelia nearly 50% higher than free mycelia did.
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30
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Noguchi M, Kakuma T, Tomiyasu K, Konishi F, Kumamoto S, Kondo R, Matsuoka K. Phase I study of a methanol extract of Ganoderma lucidum, edible and medicinal mushroom, in men with mild symptoms of bladder outlet obstruction. Urology 2005. [DOI: 10.1016/j.urology.2005.06.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
BACKGROUND The incidence of brain tumors in elderly patients is increasing. It has become possible to treat meningiomas in the elderly by several modalities. We developed a successful multimodal strategy to treat these patients. METHODS We registered 35 patients with meningiomas. Symptomatic meningiomas were treated surgically at the time of diagnosis (n=19). Of the 16 asymptomatic meningiomas, 5 were removed at the time of diagnosis. The other asymptomatic meningiomas (n=11) were treated conservatively and when the tumors increased in size, surgical treatment was considered. "Operated" patients with residual or recurrent tumors underwent radiosurgery with a gamma knife. FINDINGS Surgical mortality and morbidity were 4% and 16%, respectively. Of the 25 "operated" patients, 21 (84.0%) had a good Karnofsky scale (> or =80%) at discharge. In all but two of the 11 patients with asymptomatic, conservatively treated meningiomas, the tumors did not increase during the follow-up period. Gamma knife radiosurgery, performed to treat 3 residual and 1 recurrent tumor, resulted in very good tumor control and none of the tumors increased after gamma knife surgery. CONCLUSIONS Meningiomas in elderly patients require a multimodal approach. Our strategy, which includes surgery, radiosurgery, and conservative treatment, resulted in good tumor control and made it possible for patients to pursue their activities of daily life.
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Affiliation(s)
- Y Sonoda
- Department of Neurosurgery, Yamagata University School of Medicine, Yamagata, Japan
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Affiliation(s)
- S Kagoshima
- Department of Basic Science, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan.
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Horiguchi T, Kondo R, Miyazaki J, Shiga M, Sugiyama M, Handa M, Munekata E. Antibacterial Activity and Clinical Efficacy of Sparfloxacin in Mycobacterium avium-intracellulare Complex Infection. J Int Med Res 2004; 32:530-9. [PMID: 15458286 DOI: 10.1177/147323000403200511] [Citation(s) in RCA: 5] [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] [Indexed: 11/16/2022] Open
Abstract
In Japan the incidence of atypical mycobacteriosis has steadily increased, with Mycobacterium avium-intracellulare complex (MAC) the most common infecting organism. A standard chemotherapy regimen for MAC infection has not been established because of significant resistance to anti-mycobacterial drugs. Sparfloxacin has good antimicrobial activity against several acid-fast bacteria and is expected to be an effective drug for treating mycobacteriosis. We examined the effects of adding sparfloxacin to anti-tuberculotic combination therapy in six patients with MAC pulmonary disease. Drug susceptibility was also assessed using the agar dilution method. The minimum inhibitory concentrations (MICs) for sparfloxacin, levofloxacin, isoniazid, rifampicin, streptomycin, ethambutol and clarithromycin was measured in clinical isolates from all patients; sparfloxacin showed the lowest MIC. Bacteriological and clinical improvements were observed in the four patients who completed the study. Dosing was discontinued in two patients because of pruritic skin eruptions. Sparfloxacin shows promise as an anti-mycobacterial agent for treating MAC pulmonary disease.
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Affiliation(s)
- T Horiguchi
- Department of Pulmonary Medicine, Second Hospital for Medical Education, Fujita Health University of Medicine, Nagoya, Japan.
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Suhara H, Daikoku C, Takata H, Suzuki S, Matsufuji Y, Sakai K, Kondo R. Monitoring of white-rot fungus during bioremediation of polychlorinated dioxin-contaminated fly ash. Appl Microbiol Biotechnol 2003; 62:601-7. [PMID: 12827316 DOI: 10.1007/s00253-003-1284-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2002] [Revised: 02/13/2003] [Accepted: 02/21/2003] [Indexed: 11/30/2022]
Abstract
Bioremediation is a low-cost treatment alternative for the cleanup of polychlorinated-dioxin-contaminated soils and fly ash when pollution spread is wide-ranging. An interesting fungus, Ceriporia sp. MZ-340, with a high ability to degrade dioxin, was isolated from white rotten wood of a broadleaf tree from Kyushu Island in Japan. We have attempted to use the fungus for bioremediation of polychlorinated-dioxin-contaminated soil on site. However, we have to consider that this trial has the potential problem of introducing a biohazard to a natural ecosystem if this organism is naturalized. We have therefore developed a monitoring system for the introduced fungus as a part of the examination and evaluation of bioremediation in our laboratory. We have also developed a PCR-based assay to reliably detect the fungus at the bioremediation site. DNA isolated from the site was amplified by PCR using a specific primer derived from internal transcribed spacer region (ITS: ITS1, 5.8S rDNA and ITS2) sequences of Ceriporia sp. MZ-340. We successfully monitored Ceriporia sp. MZ-340 down to 100 fg/ micro l DNA and down to 2 mg/g mycelium. We also successfully monitored the fungus specifically at the bioremediation site. The polychlorinated dibenzo- p-dioxin and polychlorinated dibenzofuran content was observed to decrease in response to treatment with the fungus. The species-specific PCR technique developed in the present work is useful in evaluating the possibility of on-site bioremediation using the fungus Ceriporia sp. MZ-340.
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Affiliation(s)
- H Suhara
- Laboratory of Systematic Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, 812-8581 Fukuoka, Japan
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Mori T, Kitano S, Kondo R. Biodegradation of chloronaphthalenes and polycyclic aromatic hydrocarbons by the white-rot fungus Phlebia lindtneri. Appl Microbiol Biotechnol 2003; 61:380-3. [PMID: 12743769 DOI: 10.1007/s00253-003-1253-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [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: 11/08/2002] [Revised: 12/23/2002] [Accepted: 01/03/2003] [Indexed: 11/26/2022]
Abstract
The biodegradation of chloronaphthalene (CN) and polycyclic aromatic hydrocarbons by the white-rot fungus Phlebia lindtneri, which can degrade dichlorinated dioxins and non-chlorinated dioxin-like compounds, was investigated. Naphthalene, phenanthrene, 1-chloronaphthalene (1-CN) and 2-chloronaphthalene (2-CN) were metabolized by the fungus to form several oxidized products. Naphthalene and phenanthrene were metabolized to the corresponding hydroxylated and dihydrodihydroxylated metabolites. 2-CN was metabolized to 3-chloro-2-naphtol, 6-chloro-1-naphtol and two other chloronaphtols, CN-dihydrodiols and CN-diols. Significant inhibition of the degradation of these substrates was observed when they were incubated with the cytochrome P-450 monooxygenase inhibitors 1-aminobenzotriazole and piperonyl butoxide. These results suggest that P. lindtneri initially oxidizes these substrates by a cytochrome P-450 monooxygenase.
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Affiliation(s)
- T Mori
- Laboratory of Systematic Forest and Forest Products Sciences, Department of Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, 812-8581 Fukuoka, Japan
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36
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Mori T, Kondo R. Oxidation of dibenzo- p-dioxin, dibenzofuran, biphenyl, and diphenyl ether by the white-rot fungus Phlebia lindtneri. Appl Microbiol Biotechnol 2002; 60:200-5. [PMID: 12382064 DOI: 10.1007/s00253-002-1090-9] [Citation(s) in RCA: 25] [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: 05/01/2002] [Revised: 06/26/2002] [Accepted: 07/07/2002] [Indexed: 11/30/2022]
Abstract
Hydroxylation of dibenzo- p-dioxin (DD), dibenzofuran (DF), biphenyl (BP) and diphenyl ether (DPE) by the white-rot fungus Phlebia lindtneri GB-1027 was studied. DD and DF were rapidly degraded in a culture of P. lindtneri. The initial oxidation products were identified by gas chromatography-mass spectrometry. P. lindtneri oxidized DD to 2-hydroxy-DD, and DF to 2- and 3-hydroxy-DF. BP and DPE were also oxidized to p-hydroxy-BP and p-hydroxy-DPE, respectively. The oxidation catalyzed by P. lindtneri with each substrate was position-specific, because the hydroxyl group was introduced to the molecular edge of every substrate. Significant inhibition of the degradation of DD and DF was observed in incubation with the cytochrome P-450 monooxygenase inhibitors 1-aminobenzotriazole and piperonyl butoxide. These experiments with cytochrome P-450 inhibitors, and formation of the mono-hydroxyl metabolites suggest that P. lindtneri initially oxidizes DD, DF, BP, and DPE by a cytochrome P-450 monooxygenase and that it directly introduces a hydroxyl group to each of these substrates.
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Affiliation(s)
- T Mori
- Laboratory of Systematic Forest and Forest Products Sciences, Department of Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, 812-8581 Fukuoka, Japan
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38
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Stefaniak T, Krajewski J, Kobiela J, Makarewicz W, Stanek A, Asano M, Kondo R, Wakabayashi T, Gruca Z, Woźniak M. Protein oxidation in male Syrian hamster kidney during estrogen-induced carcinogenesis. Pathophysiology 2002; 8:269-273. [PMID: 12100973 DOI: 10.1016/s0928-4680(02)00019-6] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chronic administration of estradiol leads to generation of estrogen-dependent renal cancer in male Syrian hamsters within 9-12 months. The pathogenesis of this tumour is associated with oxygen free radicals, however, it is still not clear which metabolic pathway of estrogens is responsible for the generation of the radicals, and which part of the cell is mostly affected by it. The paper presents an experiment in which the protein oxidation measured by carbonyl groups level in 9-month estrogenization scheme. The level of carbonyl groups was significantly elevated starting from the 1st month of estrogenization until the 9th. The weight of the kidneys reflecting possible tumuorigenesis was also significantly increased in estrogenized group starting at the 2nd month of the experiment. The weight of the testes, a sign of adequate estrogenicity, was decreased dramatically in the estrogenized group from the first to the last month of experiment. The results suggest that the kidney of estrogenized male Syrian hamster suffers from oxidative stress affecting proteins.
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Affiliation(s)
- T Stefaniak
- Department of General, Gastroenterological and Endocrine Surgery, Medical University of Gdansk, 1 Kieturakis Str., PL-80-742, Gdansk, Poland
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39
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Ogawa N, Shiraga A, Kondo R, Kagoshima S, Miyano K. Photocontrol of dynamic phase transition in the charge-density wave material K(0.3)MoO(3). Phys Rev Lett 2001; 87:256401. [PMID: 11736590 DOI: 10.1103/physrevlett.87.256401] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2001] [Indexed: 05/23/2023]
Abstract
A photoinduced effect has been studied in the quasi-one-dimensional conductor K(0.3)MoO(3). A weak photoexcitation of the sample can drastically affect the dynamic phase transition of the charge-density wave (CDW) motion from slide to creep. The origin of the photoeffect is attributed to a local destruction of the CDW which leads to the photoinduced phase slip and the redistribution of the CDW phase.
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Affiliation(s)
- N Ogawa
- Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
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Shimizu K, Kondo R, Sakai K, Takeda N, Nagahata T, Oniki T. Novel vitamin E derivative with 4-substituted resorcinol moiety has both antioxidant and tyrosinase inhibitory properties. Lipids 2001; 36:1321-6. [PMID: 11834083 DOI: 10.1007/s11745-001-0847-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A novel vitamin E derivative, (6"-hydroxy-2",5",7",8"-tetramethylchroman-2"-yl)methyl 3-(2',4'-dihydroxyphenyl)propionate (TM4R), which has a chromanoxyl ring and 4-substituted resorcinol moieties, was synthesized; and its inhibitory effects on tyrosinase, antioxidant ability, and lightening effect of ultraviolet B (UVB)-induced hyperpigmentation were estimated. TM4R showed potent inhibitory activity on tyrosinase, which is the rate-limiting enzyme in melanogenesis. The scavenging activities of TM4R on 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radicals were found to be nearly the same as those of alpha-tocopherol. Furthermore, an efficient lightening effect was observed following topical application of TM4R to UVB-stimulated hyperpigmented dorsal skin of brownish guinea pigs. These results suggest that TM4R may be a candidate for an efficient whitening agent, possibly by inhibiting tyrosinase activity and biological reactions caused by reactive oxygen species.
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Affiliation(s)
- K Shimizu
- Department of Forest Products, Faculty of Agriculture, Kyushu University Graduate School, Fukuoka, Japan
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Kondo R, Horiguchi T, Teruya S, Banno K, Ishibashi A, Sasaki Y, Handa M, Tachikawa S. [Clinical significance of serum KL-6 in pulmonary sarcoidosis]. Nihon Kokyuki Gakkai Zasshi 2001; 39:823-8. [PMID: 11855079] [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: 02/23/2023]
Abstract
We investigated whether the level of serum KL-6 could be an activity marker for pulmonary sarcoidosis. In 33 patients with pulmonary sarcoidosis, the relationships between serum KL-6 levels and diagnostic imaging, serum angiotensin-converting enzyme (ACE) levels, serum lysozyme levels, steroid therapy, and prognosis were evaluated. There were no significant differences in the level of serum KL-6 when the patients were divided on the basis of radiographic findings, but the level of serum KL-6 was markedly elevated in some patients with stage-II pulmonary sarcoidosis. There was a significant correlation between serum KL-6 levels and the following two parameters: serum ACE and lysozyme levels. Among patients with a high initial level of serum KL-6, pulmonary sarcoidosis tended to become exacerbated within one year. Steroid therapy significantly decreased the level of serum KL-6, suggesting that the level of serum KL-6 could be an activity indicator for pulmonary sarcoidosis. Immunohistochemical staining by anti-KL-6 antibody revealed that KL-6 was localized in proliferating type-II alveolar epithelial cells.
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Affiliation(s)
- R Kondo
- Internal Respiratory Department, Fujita Health University Second Hospital, 3-6-10 Otobashi, Nakagawa-ku, Nagoya, 454-8509, Japan
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Haniuda M, Kondo R, Numanami H, Makiuchi A, Machida E, Amano J. Recurrence of thymoma: clinicopathological features, re-operation, and outcome. J Surg Oncol 2001; 78:183-8. [PMID: 11745803 DOI: 10.1002/jso.1146] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Even after complete resection, recurrence of thymoma is not infrequently observed, and treatment of recurrent thymoma remains controversial. STUDY DESIGN One hundred and twenty-six patients underwent surgically complete resection for thymoma, and 24 of them had a recurrence. Surgical treatment of recurrent thymoma was attempted in 15 patients for a total of 18 times. In the present study, the relevance of clinicopathological features and the re-operation on the survival rate after the recurrence were determined. RESULTS The most frequent recurrent type was pleural dissemination (92%), with local recurrence observed in 5%. Overall 5- and 10-year survivals after recurrence were 37 and 16%, respectively. Disease-free interval after initial operation and complication of myasthenia gravis had no significant effect on postrecurrent survival. The use of postoperative mediastinal irradiation had no effect on reducing the recurrence rate or improving survival after recurrence. Two of 15 patients who underwent re-operation died of major complications after It. pleuropneumonectomy for severe pleural dissemination. In the present study, the re-operation was not significantly effective for prolongation of postrecurrence survival. CONCLUSION Our study showed that re-operation should not be attempted for all patients with recurrent thymoma. Because effect of subtotal resection for severe pleural recurrence is disappointing, total resection for minimal pleural dissemination or small local recurrence will be undertaken to improve postrecurrent survival. Careful follow-up for > 10 years will increase the chance of the total resection of the recurrent thymoma.
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Affiliation(s)
- M Haniuda
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
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Kondo R, Yoshida K, Yamashita Y, Oseto M, Asai T, Inouye H, Nakano S, Ishimaru Y. Subgroups A and B respiratory syncytial virus isolated in Ehime Prefecture, 1995-1999. Jpn J Infect Dis 2001; 54:155-6. [PMID: 11684787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- R Kondo
- Ehime Prefectural Institute of Public Health and Environmental Science, Matsuyama 790-0003, Japan.
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Abstract
We present a case of mucoepidermoid carcinoma of the anal canal, with special reference to immunohistochemical analysis of the tumor to clarify its histogenesis. A 36-year-old man underwent surgery for mucoepidermoid carcinoma of the anal canal. Immunohistochemical analysis of the resected specimen was performed. Serial sections were stained immunohistochemically by the labeled streptavidin-biotin peroxidase method for various antigens, including epithelial membrane antigen (EMA); carcinoembryonic antigen (CEA); different types of cytokeratins, including CK10 and CAM 5.2; and p53 oncoprotein. The solid component of the tumor cells was immunohistochemically positive for EMA, CEA, and CAM 5.2, but negative for CK10. These staining patterns were different from those of anal squamous epithelium. These results confirm that mucoepidermoid carcinoma of the anus may arise from the anal transitional zone, and that it is biologically different from squamous cell carcinoma of the anus.
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Affiliation(s)
- R Kondo
- Second Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Horiguchi T, Tachikawa S, Handa M, Hanazono K, Kondo R, Ishibashi A, Banno K. Effects of suplatast tosilate on airway inflammation and airway hyperresponsiveness. J Asthma 2001; 38:331-6. [PMID: 11456386 DOI: 10.1081/jas-100000041] [Citation(s) in RCA: 17] [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: 11/03/2022]
Abstract
Suplatast tosilate (IPD) is a Th2 cytokine inhibitor that lowers the titer of the IgE antibody through specific inhibition of the production of IL (interleukin)-4 and IL-5 by T cells and inhibits tissue infiltration by eosinophils. In this clinical trial, suplatast tosilate (300 mg/day) was administered orally for 4 weeks to 25 patients (13 patients with atopic asthma, 12 patients with nonatopic asthma) whose bronchial asthma was staged in step 1 or step 2 according to the Guidelines for Prevention and Management of Bronchial Asthma, 1998. Before and after administration, the parameters of airway inflammation, that is, peripheral blood eosinophils count, serum level of eosinophil cationic protein (ECP), ECP level in induced sputum, airway hyperresponsiveness (Dmin), and morning peak expiratory flow (PEF), were measured. The peripheral blood eosinophil count, serum level of ECP, and ECP level in induced sputum decreased significantly. Of these parameters, the ECP level in induced sputum was the most sensitive. Furthermore, suplatast tosilate significantly inhibited Dmin. These results were especially significant in patients with atopic asthma. Suplatast tosilate was considered to have inhibited airway eosinophilic inflammation through decreases in peripheral blood eosinophils counts and in ECP levels in induced sputum, which resulted in inhibition of airway hyperresponsiveness.
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Affiliation(s)
- T Horiguchi
- Department of Internal Medicine, Fujita Health University School of Medicine, Second Educational Hospital, Aichi, Japan
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Yoneyama T, Sakae K, Baba J, Nakayama T, Chijiwa K, Kizoe K, Shimizu H, Iizuka S, Ishizaki T, Kondo R, Miyamura T. Surveillance of poliovirus-isolates in Japan, 2000. Jpn J Infect Dis 2001; 54:80-2. [PMID: 11427750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- T Yoneyama
- Department of Virology II, National Institute of Infectious Diseases, Musashimurayama 208-0011, Japan.
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Miyazawa M, Yamanda T, Kaneko K, Yoshida K, Machida E, Hanaoka T, Takasuna K, Kondo R, Numanami H, Makiuchi A, Haniuda M, Amano J. [Clinical study of operated nine thymic carcinomas]. Kyobu Geka 2001; 54:89-93; discussion 93-6. [PMID: 11211776] [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
Nine cases of thymic carcinoma (5 males and 4 females) were operated in our hospital between 1990 and 1998. These cases included 4 squamous cell carcinomas, 2 small cell carcinomas, 2 undifferentiated carcinomas and one adenocarcinoma. Preoperative chemotherapy were performed in 3 cases. All cases underwent median-sternotomy followed by mediastinal irradiation, 4 had total resection of the tumor, 2 had subtotal resection and 3 had exploratory thoracotomy followed by mediastinal irradiation. Adjuvant chemotherapy were administered in 4 cases and re-operation were performed in 2 cases. We applied Masaoka's clinical staging for thymoma, nine cases consisted of 6 stage III cases, 2 stage IV b cases and one stage IV a case. Within 2 years after operation, 3 cases (two complete resection cases and one exploratory thoracotomy case) were died of the carcinoma. However, two cases of squamous cell carcinoma have been alive more than 5 years after surgery followed by chemoradiation. The remaining 4 patients are alive either with or without the carcinoma after 7 to 28 months after operation. Thymic carcinoma is not so common mediastinal tumor but is expected to increase in the future. The treatment of thymic carcinoma remains a controversial matter and the survival is poor compared with invasive thymoma, but multimodal-therapy would contribute to improvement of the results in treatment for thymic carcinoma especially in squamous cell carcinoma.
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Affiliation(s)
- M Miyazawa
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Affiliation(s)
- D S Strayer
- Department of Pathology, Jefferson Medical College, Philadelphia, PA, USA
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Suzuki A, Zheng Y, Kondo R, Kusakabe M, Takada Y, Fukao K, Nakauchi H, Taniguchi H. Flow-cytometric separation and enrichment of hepatic progenitor cells in the developing mouse liver. Hepatology 2000; 32:1230-9. [PMID: 11093729 DOI: 10.1053/jhep.2000.20349] [Citation(s) in RCA: 235] [Impact Index Per Article: 9.8] [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: 12/17/2022]
Abstract
Stem cells responsible for tissue maintenance and repair are found in a number of organs. However, hepatic stem cells assumed to play a key role in liver development and regeneration remain to be well characterized. To address this issue, we set up a culture system in which primitive hepatic progenitor cells formed colonies. By combining this culture system with fluorescence-activated cell sorting (FACS), cells forming colonies containing distinct hepatocytes and cholangiocytes were identified in the fetal mouse liver. These cells express both CD49f and CD29 (alpha6 and beta1 integrin subunits), but do not mark for hematopoietic antigens such as CD45, TER119, and c-Kit. When transplanted into the spleen, these cells migrated to the recipient liver and differentiated into liver parenchymal cells. Our data demonstrate that hepatic progenitor cells are enriched by FACS and suggest approaches to supplanting organ allografting and improving artificial-organ hepatic support.
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Affiliation(s)
- A Suzuki
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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