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Oba Y, Koizumi R, Kageyama K, Yoshimoto M, Kurihara S, Ikuma D, Yamaguchi K, Yamanouchi M, Suwabe T, Ishiwata K, Wake A, Ubara Y, Sawa N. Percutaneous Perirenal Mass Biopsy in a Sitting Position Revealed Extramedullary Relapse of Acute Lymphoblastic Leukemia. Cancer Diagn Progn 2024; 4:66-70. [PMID: 38173667 PMCID: PMC10758842 DOI: 10.21873/cdp.10287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024]
Abstract
Background/Aim Acute lymphoblastic leukemia (ALL) is a blood malignancy characterized by a rapid proliferation of lymphoid progenitor cells. Extramedullary relapse (EMR) is the recurrence of leukemia that occurs outside the bone marrow. The central nervous system is the most prevalent site of EMR in ALL, whereas other organs, particularly the renal organs, are less commonly involved. Case Report A 49-year-old man diagnosed with Philadelphia chromosome-negative ALL (Ph-negative ALL) received a second umbilical cord blood transplant (uCBT) and was confirmed to be in his third hematological complete remission. However, the perirenal mass lesion emerged after two weeks, and was difficult to detect on echography in the prone position. We successfully performed a percutaneous biopsy of the mass in a sitting position and pathologically identified it as EMR. After the diagnosis, chemotherapy was restarted, and the patient was scheduled to receive a third uCBT. Conclusion This is the first report of EMR in a perirenal lesion of ALL and shows that this novel biopsy can be performed as a renal biopsy, even in a sitting position. This case is the first to describe a biopsy technique in detail and demonstrates the value of collaboration between hematologists and nephrologists in diagnosing EMR of the kidneys.
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Affiliation(s)
- Yuki Oba
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Ryo Koizumi
- Department of Hematology, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | - Kosei Kageyama
- Department of Hematology, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | | | | | - Daisuke Ikuma
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | - Kyosuke Yamaguchi
- Department of Hematology, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | - Masayuki Yamanouchi
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Tatsuya Suwabe
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Kazuya Ishiwata
- Department of Hematology, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | - Atsushi Wake
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
- Department of Hematology, Toranomon Hospital Kajigaya, Kanagawa, Japan
| | - Yoshifumi Ubara
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Naoki Sawa
- Nephrology Center, Toranomon Hospital Kajigaya, Kanagawa, Japan
- Okinaka Memorial Institute for Medical Research, Tokyo, Japan
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Fushimi T, Oyama S, Koizumi R, Fujii Y, Osakabe N. Impact of cyanidin 3- O-glucoside on rat micro-and systemic circulation, possibly thorough angiogenesis. J Clin Biochem Nutr 2023; 72:132-138. [PMID: 36936871 PMCID: PMC10017319 DOI: 10.3164/jcbn.22-50] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/17/2022] [Indexed: 12/13/2022] Open
Abstract
Cyanidin 3-O-glucoside (C3G), an antioxidant, is one of the most abundant anthocyanin in plant foods. Intervention trials and subsequent meta-analyses have suggested that anthocyanins could reduce the risks of cardiovascular diseases. This study investigated hemodynamic alterations following a single intragastric dose of C3G by measuring blood flow in rat cremaster muscle arteriole for 60 min. Next, in excised aortas, we performed western blotting to measure the phosphorylation of Akt and endothelial nitric oxide synthase (eNOS). A single oral dose of C3G significantly increased blood flow soon after ingestion, and it was maintained throughout the experimental period. In addition, aortic Akt phosphorylation increased. Then, we examined the impact of repeated oral administrations of C3G for 14 days. The mean blood pressure was significantly reduced at 7 and 14 days after treatment, with a slight increase in aortic eNOS expression. Immunohistochemical analyses of the soleus showed that the level of CD31, an angiogenesis-marker protein, was significantly increased with C3G. These results suggested that an oral dose of C3G increased blood flow, which promoted angiogenesis within skeletal muscle, and consequently, blood pressure was reduced.
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Affiliation(s)
- Taiki Fushimi
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama 337-8570, Japan
| | - Shiori Oyama
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama 337-8570, Japan
| | - Ryo Koizumi
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama 337-8570, Japan
| | - Yasuyuki Fujii
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama 337-8570, Japan
| | - Naomi Osakabe
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama 337-8570, Japan
- Department of Bioscience and Engineering, Shibaura Institute of Technology, Saitama, Saitama, Japan
- To whom correspondence should be addressed. E-mail:
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Koizumi R, Fushimi T, Sato Y, Fujii Y, Sato H, Osakabe N. Relationship between hemodynamic alteration and sympathetic nerve activation following a single oral dose of cinnamtannin A2. Free Radic Res 2021; 55:491-498. [PMID: 32321314 DOI: 10.1080/10715762.2020.1759805] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We previously found that a single dose of B-type procyanidin mixture increase in skeletal muscle blood flow (BF). We compared BF changes following administration of (-)-epicatechin (EC, monomer) and the B-type procyanidins procyanidin B2 (B2, dimer), procyanidin C1 (C1, trimer), and cinnamtannin A2 (A2, tetramer). Each chemical was administered orally to rats, followed by BF measurement in cremaster arteriole for 60 min. About 10 and 100 µg/kg of B2 and C1 elicited BF increase, the effect was potent at 100 µg/kg. BF also increased significantly after administration of 10 µg/kg A2, but not with the administration at 100 µg/kg. EC yielded no BF changes. Co-treatment with the nonselective adrenaline blocker carvedilol attenuated the BF increase seen with 10 µg/kg A2 treatment. This outcome suggested the involvement of sympathetic nerve activation in the BF increase by this dose of A2. Co-treatment of 100 µg/kg A2 with the α2 blocker yohimbine exhibited an increase of BF significantly. The α2 adrenaline receptor in the vasomotor centre is an inhibitory receptor and it regulates hemodynamics. This result suggested that high doses of A2 did not alter BF because of activating the α2 adrenergic receptor. Phosphorylation of aortic endothelial nitric oxide synthase (eNOS) increased with 10 µg/kg A2 alone or co-treatment with 100 µg/kg A2 and yohimbine, but not with co-treatment of 10 µg/kg A2 and carvedilol or 100 µg/kg A2 alone. These results imply that A2 does not directly activate eNOS, but that shear stress from the increased BF might be associated with eNOS phosphorylation.
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Affiliation(s)
- Ryo Koizumi
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
| | - Taiki Fushimi
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
| | - Yuki Sato
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
| | - Yasuyuki Fujii
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
| | - Hiroki Sato
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
| | - Naomi Osakabe
- Department of Bio-science and Engineering, Shibaura Institute of Technology, Saitama, Japan
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Fushimi T, Fujii Y, Koshino H, Inagawa K, Saito A, Koizumi R, Shibata M, Osakabe N. Method for detecting hemodynamic alterations following a single gavage in rats. Exp Anim 2021; 70:372-377. [PMID: 33840658 PMCID: PMC8390307 DOI: 10.1538/expanim.20-0200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
It is known that administering a gavage to rodents evokes a cardiac reflex, due to gastrointestinal stimulation. Consequently, it is difficult to evaluate changes in hemodynamics after a single oral dose of a pungent or astringent, which alters the circulation by increasing sympathetic activity. In the present study, we developed a method for administering a gavage without significantly affecting hemodynamics measurements. We marked a gastric tube at 10 cm from the tip, to mark the distance from the oral cavity to the stomach body of Wistar male rats. Rats were intubated under urethane anesthesia.After 10–15 min of stabilization, we measured the mean blood pressure (MBP), heart rate (HR), and blood flow (BF) in the cremaster arteriole under two different conditions; condition 1: a pointed gastric tube, room temperature distilled water, and injected at normal speed (approximately 3 ml/min); condition 2: a rounded gastric tube, 37°C distilled water, and injection at 1.0 ml/min. Under condition 1, we observed striking hemodynamic alterations, due to the somatic afferent reflex. In contrast, under condition 2, these hemodynamic changes were nearly eliminated. In addition, we could clearly detect hemodynamic changes in rats after a single gavage treatment of pungent (capsaicin) or astringent (cinnamtannin A2). We observed transient increases in the HR and MBP soon after treatment with capsaicin. Moreover, cremasteric BF was elevated with cinnamtannin A2. These results confirmed the utility of the gavage method developed in this study.
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Affiliation(s)
- Taiki Fushimi
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Yasuyuki Fujii
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Hideaki Koshino
- Department of Bioscience and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Kodai Inagawa
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Akiko Saito
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Ryo Koizumi
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Masahiro Shibata
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan.,Department of Bioscience and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
| | - Naomi Osakabe
- Functional Control Systems, Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan.,Department of Bioscience and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minumaku, Saitama, 337-8570, Japan
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Aiba A, Koizumi R, Tsuruoka T, Terabe K, Tsukagoshi K, Kaneko S, Fujii S, Nishino T, Kiguchi M. Investigation of Ag and Cu Filament Formation Inside the Metal Sulfide Layer of an Atomic Switch Based on Point-Contact Spectroscopy. ACS Appl Mater Interfaces 2019; 11:27178-27182. [PMID: 31276618 DOI: 10.1021/acsami.9b05523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The atomic switches have attracted wide attention owing to their applications in nonvolatile electric devices. The atomic switch is operated by the formation and dissipation of a metallic filament inside a metal sulfide film, which is controlled by a solid electrochemical reaction. Although the metallic filament is considered to consist of metal atoms, the chemical species of the metallic filament are difficult to be identified due to challenges in observing the metallic filament inside the solid. In this study, we report the investigation on the metallic filament in the atomic switch with metal sulfide based on point-contact spectroscopy (PCS). By cooling the atomic switch, the switch voltage increased to 1 V, which allowed for the PCS measurement. The PCS revealed that the metallic filament was composed of Ag atoms in the case of the Pt/Ag2S/Ag atomic switch. We applied this technique to the Pt/Cu2S/Ag and Pt/Ag2S/Cu atomic switches to uncover the formation process of the metallic filament. In both atomic switches, the chemical species of the metallic filament were Ag. The metal atoms were supplied from both the metal electrode and the sulfide layer.
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Affiliation(s)
- A Aiba
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - R Koizumi
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - T Tsuruoka
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Tsukuba , Ibaraki 305-0044 , Japan
| | - K Terabe
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Tsukuba , Ibaraki 305-0044 , Japan
| | - K Tsukagoshi
- International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS) , 1-1 Tsukuba , Ibaraki 305-0044 , Japan
| | - S Kaneko
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - S Fujii
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - T Nishino
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
| | - M Kiguchi
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 W4-10 Ookayama , Meguro-ku, Tokyo 152-8551 , Japan
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Koizumi R, Aiba A, Kaneko S, Fujii S, Nishino T, Kiguchi M. Investigation on the formation process of metal atomic filament for metal sulfide atomic switches by electrical measurement. Nanotechnology 2019; 30:125202. [PMID: 30620940 DOI: 10.1088/1361-6528/aafc79] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We have studied the formation process of the metal atomic filament for metal sulfide atomic switches by electrical measurement. The switching between ON and OFF states of the atomic switch is controlled by the application of the bias voltage for the atomic switches. The SET (OFF → ON) and RESET (ON → OFF) voltages were investigated for the atomic switch where the Ag2S or Cu2S layer were sandwiched between the Pt and Ag or Cu electrodes. The SET and RESET voltages of the Ag/Cu2S/Pt and Cu/Ag2S/Pt were close to those of the Ag/Ag2S/Pt atomic switch, and different from those of the Cu/Cu2S/Pt atomic switch. These results indicated that the dominant chemical species of the making and breaking part of the metal filament was Ag, and that the source of the metal filament was both the sulfide layer and the metal electrode.
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Affiliation(s)
- R Koizumi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Japan
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Tsutsumi A, Horikoshi Y, Fushimi T, Saito A, Koizumi R, Fujii Y, Hu QQ, Hirota Y, Aizawa K, Osakabe N. Acylated anthocyanins derived from purple carrot (Daucus carota L.) induce elevation of blood flow in rat cremaster arteriole. Food Funct 2019; 10:1726-1735. [DOI: 10.1039/c8fo02125b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Acylated anthocyanins are more stable than monomeric anthocyanins, but little is known about their physiological effects.
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Azuma K, Koizumi R, Izawa H, Morimoto M, Saimoto H, Osaki T, Ito N, Yamashita M, Tsuka T, Imagawa T, Okamoto Y, Inoue T, Ifuku S. Hair growth-promoting activities of chitosan and surface-deacetylated chitin nanofibers. Int J Biol Macromol 2018; 126:11-17. [PMID: 30576733 DOI: 10.1016/j.ijbiomac.2018.12.135] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/30/2018] [Accepted: 12/16/2018] [Indexed: 12/20/2022]
Abstract
In this study, the effects of chitosan and surface-deacetylated chitin nanofibrils (SDACNFs) on hair growth were evaluated. In human follicle dermal papilla cells in vitro, chitosan and SDACNFs were shown to increase cell growth on day 3 after the initiation of treatment, together with an increase in the production of fibroblast growth factor-7 (FGF-7) by these cells on day 3. Furthermore, in an in vivo study in mice, chitosan and SDACNF application promoted hair growth. The number of anagen follicles significantly increased compared with that in the control group, whereas the number of telogen follicles significantly decreased in the chitosan and SDACNF groups. In the chitosan and SDACNFs groups, moreover, the expression levels of FGF-7 and Sonic hedgehog were significantly upregulated in hair follicles. Overall, our results demonstrated that chitosan and SDACNFs promoted hair growth and therefore may have applications as novel therapeutic agents for the treatment of hair loss in patients.
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Affiliation(s)
- Kazuo Azuma
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Ryo Koizumi
- Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Hironori Izawa
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Minoru Morimoto
- Division of Instrumental Analysis, Research Center for Bioscience and Technology, Tottori University, 4-101 Koyama-minami, Tottori 680-8550, Japan.
| | - Hiroyuki Saimoto
- Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Tomohiro Osaki
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Norihiko Ito
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Masamichi Yamashita
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Takeshi Tsuka
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Tomohiro Imagawa
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Yoshiharu Okamoto
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan.
| | - Tadashi Inoue
- Marine Nano-fiber Co., Ltd., 4-101 Koyama-minami, Tottori 680-8552, Japan.
| | - Shinsuke Ifuku
- Department of Veterinary Clinical Medicine, Tottori University, 4-101 Koyama-minami, Tottori 680-8553, Japan; Marine Nano-fiber Co., Ltd., 4-101 Koyama-minami, Tottori 680-8552, Japan.
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Iida Y, Koizumi R. A FRAMEWORK USING THE ANALYTIC HIERARCHY PROCESS FOR LOCAL GOVERNMENTS IN JAPAN TO EVALUATE PROJECTS BASED ON OUTCOMES. IJAHP 2018. [DOI: 10.13033/ijahp.v10i3.593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Currently, in Japan, women are required to participate and advance in the workplace because of the decline in the labor population. However, it is very difficult for them to do so because of the patriarchal system within Japanese history. In the 1990s, local governments began various projects to encourage women to participate in society. At the same time, local government administrations were introduced to project evaluation to boost the efficiency of their projects. However, project evaluation did not function well because project evaluation needs to be linked to outcomes of the program, and the outcome step was often performed independently. The purpose of this paper is to show how to perform project evaluation to promote women’s active participation in society in Japan. Using the Analytic Hierarchy Process, we show how to evaluate projects in a way that can connect to the outcomes of the program. This framework can also be used to calculate the degree of contribution of projects in the program from two perspectives. First, the decision makers in a local government evaluate the outcomes of the program and second, the people in charge of the projects that make up the program do the evaluation for their own projects. In this paper, we evaluated actual projects of a city in Japan and were able to show the direction they should take, such as reduction or expansion for each project in the next fiscal year, by using numerical values obtained in the process of calculation by this framework.
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Koizumi R, Azuma K, Izawa H, Morimoto M, Ochi K, Tsuka T, Imagawa T, Osaki T, Ito N, Okamoto Y, Saimoto H, Ifuku S. Oral Administration of Surface-Deacetylated Chitin Nanofibers and Chitosan Inhibit 5-Fluorouracil-Induced Intestinal Mucositis in Mice. Int J Mol Sci 2017; 18:ijms18020279. [PMID: 28134832 PMCID: PMC5343815 DOI: 10.3390/ijms18020279] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 01/24/2017] [Indexed: 01/27/2023] Open
Abstract
This study investigated the prophylactic effects of orally administered surface-deacetylated chitin nanofibers (SDACNFs) and chitosan against 5-fluorouracil (5-FU)-induced intestinal mucositis, which is a common side effect of 5-FU chemotherapy. SDACNFs and chitosan abolished histological abnormalities associated with intestinal mucositis and suppressed hypoproliferation and apoptosis of intestinal crypt cells. These results indicate that SDACNF and chitosan are useful agents for preventing mucositis induced by anti-cancer drugs.
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Affiliation(s)
- Ryo Koizumi
- Graduate School of Engineering, Tottori University, Tottori 680-8552, Japan.
| | - Kazuo Azuma
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Hironori Izawa
- Graduate School of Engineering, Tottori University, Tottori 680-8552, Japan.
| | - Minoru Morimoto
- Division of Instrumental Analysis, Research Center for Bioscience and Technology, Tottori University, Tottori 680-8550, Japan.
| | - Kosuke Ochi
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Takeshi Tsuka
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Tomohiro Imagawa
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Tomohiro Osaki
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Norihiko Ito
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Yoshiharu Okamoto
- Department of Veterinary Clinical Medicine, Tottori University, Tottori 680-8553, Japan.
| | - Hiroyuki Saimoto
- Graduate School of Engineering, Tottori University, Tottori 680-8552, Japan.
| | - Shinsuke Ifuku
- Graduate School of Engineering, Tottori University, Tottori 680-8552, Japan.
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Koizumi R, Funamoto K, Hayase T, Kanke Y, Shibata M, Shiraishi Y, Yambe T. Numerical analysis of hemodynamic changes in the left atrium due to atrial fibrillation. J Biomech 2014; 48:472-8. [PMID: 25547024 DOI: 10.1016/j.jbiomech.2014.12.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/02/2014] [Accepted: 12/05/2014] [Indexed: 11/29/2022]
Abstract
Atrial fibrillation (AF) disrupts movement of the left atrium (LA) and worsens the vital prognosis by causing thromboembolism. Ultrasound Doppler measurement, phase-contrast magnetic resonance imaging (PC MRI), as well as computational fluid dynamics (CFD) have revealed hemodynamic changes in the LA due to AF, such as stagnation of blood flow in the left atrial appendage (LAA). However, quantitative evaluation of the hemodynamics during AF has not been conducted, and the effects of important AF characteristics, such as a lack of active contraction of the LA (atrial kick) in late diastole and the occurrence of high-frequency fibrillation (>400bpm) of the atrial wall, on blood flow field and concomitant hemodynamic stresses have not been completely understood. In this study, the effects of the above-mentioned two characteristic phenomena of AF on blood flow and hemodynamic parameters were quantitatively investigated. Based on MRI of a healthy volunteer heart, one healthy LA model and two AF models (one without atrial kick, and one without atrial kick and with high-frequency fibrillation) were constructed to perform hemodynamic analysis, and the computational results were compared. The results revealed that each characteristic phenomenon of AF influenced hemodynamics. Especially, atrial wall movement by high-frequency fibrillation had a large impact on the stagnation of blood flow. The relative residence time (RRT), which is an indicator of stagnation of blood flow, increased in the upper part of the LAA during AF. This result implies that there is a local thrombus-prone site in LAA when AF occurs.
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Affiliation(s)
- Ryo Koizumi
- Graduate School of Engineering, Tohoku University, Japan
| | | | | | - Yusuke Kanke
- Graduate School of Engineering, Tohoku University, Japan
| | | | | | - Tomoyuki Yambe
- Institute of Development, Aging and Cancer, Tohoku University, Japan
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Sasaki N, Murata O, Ninomiya Y, Hosoya Y, Suzuki N, Koizumi R, Nakamura Y, Kobayashi H, Yamauchi K, Sasaki M. SAT0507 Detection of Novel Cerebral Microvessel Lesions in Patients with Neuropsychiatric Systemic Lupus Erythematosus by 7Tesla MRI. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2231] [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: 11/04/2022]
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13
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Emoto C, Iwasaki K, Koizumi R, Utoh M, Murayama N, Uno Y, Yamazaki H. Species Difference between Cynomolgus Monkeys and Humans on Cytochromes P450 2D and 3A-Dependent Drug Oxidation Activities in Liver Microsomes. ACTA ACUST UNITED AC 2011. [DOI: 10.1248/jhs.57.164] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Chie Emoto
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
| | | | - Ryo Koizumi
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
| | | | - Norie Murayama
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
| | | | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
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Iwasaki K, Murayama N, Koizumi R, Uno Y, Yamazaki H. Comparison of Cytochrome P450 3A Enzymes in Cynomolgus Monkeys and Humans. Drug Metab Pharmacokinet 2010; 25:388-91. [DOI: 10.2133/dmpk.dmpk-10-nt-022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Miyamoto K, Koizumi R, Horn E, Fukuda Y. Crystal structure of μ3-chloro-μ3-hydroxo-tris(μ-chloro)tris(tetramethylethylenediamine) trinickel(II) iodide, [Ni3(C6H16N2)3Cl4(OH)]I. Z KRIST-NEW CRYST ST 2006. [DOI: 10.1524/ncrs.2006.0007] [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: 11/24/2022]
Abstract
AbstractC18H49Cl4IN6Ni3O, monoclinic, C12/c1 (no. 15), a = 33.562(7) Å, b = 12.220(2) Å, c = 18.849(4) Å, β = 117.70(3)°, V = 6844.7 Å3, Z = 8, Rgt(F) = 0.059, wRref(F) = 0.066, T = 273 K.
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Affiliation(s)
- K. Miyamoto
- 1Ochanomizu University, Faculty of Science, Department of Chemistry, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - R. Koizumi
- 1Ochanomizu University, Faculty of Science, Department of Chemistry, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - E. Horn
- 2Rikkyo University, Department of Chemistry, 3-34-1 Nishi-Ikebukuro, Tosima-ku, Tokyo 171-8501, Japan
| | - Y. Fukuda
- 1Ochanomizu University, Faculty of Science, Department of Chemistry, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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Miyamoto K, Koizumi R, Horn E, Fukuda Y. Crystal structure of μ3 - chloro - μ3 - hydroxo - tris (μ-chloro) tris (tetramethyl - ethylenediamine) trinickel (II) iodide,[Ni3(C6H16N2)Cl4(OH)]I. Z KRIST-NEW CRYST ST 2006. [DOI: 10.1524/ncrs.2006.221.14.123] [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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Yamamoto K, Imakiire A, Katori Y, Masaoka T, Koizumi R. Clinical results of modified Mitchell's osteotomy for hallux valgus augmented with oblique lesser metatarsal osteotomy. J Orthop Surg (Hong Kong) 2005; 13:245-52. [PMID: 16365487 DOI: 10.1177/230949900501300306] [Citation(s) in RCA: 20] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
PURPOSE To evaluate postoperative results of modified Mitchell's osteotomy and its combination with oblique metatarsal osteotomy for the treatment of hallux valgus. METHODS A total of 93 feet of 53 patients (2 men and 51 women) with hallux valgus underwent modified Mitchell's osteotomy and were followed up for at least 5 years. Patients' age ranged from 17 to 83 years, and the duration of follow-up ranged from 5 years one month to 18 years 4 months. Modified Mitchell's osteotomy was performed on 53 feet in 31 patients (group A), whereas modified Mitchell's osteotomy augmented with oblique lesser metatarsal osteotomy was performed to the remaining 40 feet in 22 patients (group B). Postoperative results were assessed using a clinical assessment system developed by the Tokyo Medical University based on 5 categories: pain in the first metatarsophalangeal, deformity of the metatarsophalangeal, plantar callosity and/or metatarsalgia of lesser metatarsals, the use of commercially available shoes, and local inflammatory symptoms. RESULTS Mean total score improved from 3.8 to 7.9 on a 10-point scale. Scores for 2 categories--plantar callosity and/or metatarsalgia and the use commercially available shoes--were significantly higher in group B at postoperative 5 years. Before surgery, at postoperative 3 weeks, and at postoperative 5 years, respectively, the mean hallux valgus angles were 34.2, 12.0, and 17.1 degrees; mean M1-M2 angles were 16.7, 7.4, and 8.7 degrees; mean M1-M5 angles were 34.9, 25.8, and 26.6 degrees; and mean sesamoid bone shifts were 8.7 mm, 4.3 mm, and 5.9 mm. CONCLUSION Modified Mitchell's osteotomy shortens the length of the first metatarsal bone and thus relieves tension in soft tissues such as the adductor hallucis. Nonetheless, the procedure can induce metatarsophalangeal joint malalignment and metatarsalgia, and plantar callosity may develop or persist after surgery. Combining oblique metatarsal osteotomy of the lesser metatarsal bones is useful in patients with uneven metatarsal bone lengths and metatarsophalangeal joint malalignment.
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Affiliation(s)
- K Yamamoto
- Department of Orthopedic Surgery, Tokyo Medical University, Tokyo, Japan.
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18
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Miyamoto K, Koizumi R, Horn E, Fukuda Y. Refinement of the crystal structure of μ3-chloro-μ3-hydroxotris( μ-chloro)-tris[tetramethylethylenediaminenickel(II)] chloride, {[Ni(C6H16N2)]3Cl4OH}Cl. Z KRIST-NEW CRYST ST 2005. [DOI: 10.1524/ncrs.2005.220.14.236] [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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Abstract
A 59-year-old man was referred for evaluation of nephrotic syndrome. The patient was diagnosed to have rheumatoid arthritis and had been treated for 10 years. Renal biopsy showed mesangial proliferation with small nodular formations, which were determined as fibrillary deposits (average diameter: 20 nm) by electromicroscopy. Congo-red stain was negative. The laboratory findings revealed hypocomplementemia and lambda type of Bence-Jones protein in urine without other systemic diseases including multiple myeloma. Immunosuppressive therapy did not attenuate the nephrotic-range proteinuria. Such a case of fibrillary glomerulonephritis with hypocomplementemia is rare.
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Affiliation(s)
- Satoshi Suzuki
- First Department of Internal Medicine, Yamagata University School of Medicine, Yamagata
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20
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Hayashi J, Hiromura K, Koizumi R, Shimizu Y, Maezawa A, Nojima Y, Naruse T. Platelet-activating factor antagonist, SM-12502, attenuates experimental glomerular thrombosis in rats. Nephron Clin Pract 2001; 87:274-8. [PMID: 11287764 DOI: 10.1159/000045926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Platelet-activating factor (PAF) is involved in many pathologic conditions through its potent proinflammatory and vasoactive effects. Using a specific PAF antagonist, SM-12502, we investigated the role of PAF in rat experimental glomerular thrombosis. In this model, sequential injections of nephrotoxic serum (NTS) and lipopolysaccharide (LPS) selectively induce glomerular fibrin deposition accompanied by neutrophil accumulation. SM-12502, when injected simultaneously with either NTS or LPS, strongly inhibited glomerular fibrin deposition in a dose-dependent manner. In contrast, neutrophil invasion was similar in both SM-12502-injected and uninjected rats, suggesting that the antithrombotic effect was not mediated by inhibition of neutrophil migration. However, serum myeloperoxidase activity, a marker of neutrophil activation, was significantly suppressed by treatment with SM-12502. From a previous finding supporting the indispensable role of neutrophils in this model and the current observations, SM-12502 is suggested to attenuate glomerular thrombosis by inhibiting neutrophil activation. Thus, the present findings suggest an involvement of PAF in this glomerular thrombosis model.
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Affiliation(s)
- J Hayashi
- Third Department of Internal Medicine, Gunma University School of Medicine, 3-39-15 Shouwa, Maebashi, Gunma 371-8511, Japan
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Koizumi R, Tsukada Y, Ideura H, Ueki K, Maezawa A, Nojima Y. Treatment of adult Still's disease with dexamethasone, an alternative to prednisolone. Scand J Rheumatol 2001; 29:396-8. [PMID: 11132211 DOI: 10.1080/030097400447624] [Citation(s) in RCA: 15] [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: 10/16/2022]
Abstract
We successfully treated three cases of adult Still's disease (ASD) with dexamethasone. High dose prednisolone, which was initially used to treat these patients, failed to remit the disease in all cases. Although they were resistant to prednisolone, all these patients had remarkable improvements in clinical and laboratory findings after switching to an equivalent dose of dexamethasone. We propose using dexamethasone as an alternative for treating ASD before adding immunosuppressants or disease modifying anti-rheumatic drugs (DMARD), when prednisolone therapy does not suppress disease activity sufficiently.
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Affiliation(s)
- R Koizumi
- The Third Department of Internal Medicine, Gunma University School of Medicine, Japan
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Koizumi R, Kanai H, Maezawa A, Kanda T, Nojima Y, Naruse T. Therapeutic effects of ulinastatin on experimental crescentic glomerulonephritis in rats. Nephron Clin Pract 2000; 84:347-53. [PMID: 10754412 DOI: 10.1159/000045610] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Ulinastatin is a potent protease inhibitor purified from the human urine that has been used clinically to treat acute pancreatitis and circulatory shock. In the current study, we evaluated the therapeutic effects of Ulinastatin in a rat model of crescentic glomerulonephritis (CrGN) and investigated its putative mechanisms. Wistar-Kyoto rats were injected with nephrotoxic serum and received daily intraperitoneal injection of Ulinastatin. Ulinastatin treatment significantly reduced proteinuria and glomerular crescentic formation. Moreover, glomerular infiltration of neutrophils and ED1+ cells (monocytes/macrophages) was significantly suppressed by Ulinastatin. In contrast, the glomerular deposition of heterologous (rabbit) and autologous (rat) antibodies was not changed. Neither serum complement activation nor the anti-rabbit immune response was affected by Ulinastatin administration. Our results suggest that Ulinastatin has preventive effects on rat experimental CrGN, mediated at least in part by inhibiting intraglomerular infiltration of inflammatory cells.
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Affiliation(s)
- R Koizumi
- Third Department of Internal Medicine, Gunma University School of Medicine, Maebashi, Gunma, Japan
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Shibata S, Tanaka J, Asanuma Y, Andoh H, Yoshioka T, Koyama K, Ebina T, Koizumi R. A case of bilioduodenal fistula treated with a self-expandable metallic stent. Hepatogastroenterology 1999; 46:2196-8. [PMID: 10521966] [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: 02/14/2023]
Abstract
We report the case of a 72 year-old female patient who suffered from biliary fistulae. The biliobiliary and bilioduodenal fistulae appeared after an operation for biliary bleeding. Conventional therapy for biliary fistula would be the disconnection of the fistula by either conservative or operative treatment. In the present case, however, it was preferable to enlarge the fistula to drain bile juice into the duodenum, rather than to close the fistula because it would have been difficult to achieve a tight adhesion with this operation. The enlargement by a plastic tube stent failed to drain the bile juice into the duodenum, because the sludge made the tube stenotic. Therefore, a self-expandable metallic stent was applied in this case. An expandable stent was used because a large final caliber is necessary to prevent stenosis of the fistula by sludge and mucosal hyperplasia. After insertion of a self-expandable metallic stent by the percutaneous transhepatic biliary drainage route, the patient has not suffered from cholestasis and cholangitis for the last 30 months. It can therefore be concluded that enlargement of the fistula by a self-expandable metallic stent is a convenient therapy for such biliointestinal fistulae.
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Affiliation(s)
- S Shibata
- Department of Surgery Akita, University School of Medicine, Japan
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Shinohara M, Tsuchida A, Abe Y, Sadakata H, Nada Y, Koizumi R, Matsushima K, Yano S, Naruse T. Hemodialysis and hemoperfusion in the successful treatment of a poisoning with a herbicide containing glufosinate ammonium and a surfactant. Clin Nephrol 1997; 48:61. [PMID: 9247785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Inoue Y, Nasu H, Nakamura J, Arakawa H, Masamune O, Yamada N, Furuya M, Ookubo M, Mukojima T, Koizumi R. [Efficacy of UFT in advanced gastric carcinoma under comparative study of MMC + UFT and MMC + tegafur therapies]. Gan To Kagaku Ryoho 1989; 16:3567-72. [PMID: 2510604] [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: 01/01/2023]
Abstract
Antitumor effect of MMC + UFT(A) and MMC + tegafur(B) therapies for advanced gastric carcinoma was compared from February 1985 to March 1988. UFT and tegafur were orally given at dose of 400 mg/m2 daily, and MMC was intravenously administered at dose of 6-8 mg/m2 every two weeks. The following results were obtained. 1. Twenty-nine cases entered in this study were divided into A or B therapies at random. All cases entered were eligible. Fourteen of 29 cases were randomized into A therapy and 15 cases into B therapy. One case treated with B was evaluated as incomplete. 2. There were no differences in the characteristics of patients between A and B therapies. 3. Among 29 eligible cases, a partial response was obtained in 3 out of 14 cases (21.4%) treated with A and in 3 out of 15 cases (20.0%) treated with B. Among 28 cases evaluated completely, a partial response was obtained in 3 out of 14 cases (21.4%) treated with each A and B. 4. Response rate with every ps or for every lesion did not differ between A and B therapies. 5. Median survival day treated with A and B therapies was 223 and 181 days, respectively. The survival curve did not differ significantly between the two therapies. 6. The frequency of adverse reactions within eight weeks after beginning the therapy was 64.2 and 73.3% with A and B therapies, respectively. From the results mentioned, it was concluded that the antitumor effect of UFT was not superior to that of tegafur for advanced gastric carcinoma.
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Affiliation(s)
- Y Inoue
- Akita Prefectural Center of Health Care
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Abstract
We treated a patient with a complete invagination of the appendix which contained one large laminated calcified fecalithy. Colonofiberscopy showed a dimpling submucosal tumor, which was palpated as a bony hard tumor at laparotomy. This finding suggested that the fecalith caused an intussusception of the appendix and that such an intussusception should be suspected when there is a bony hard dimpling submucosal tumor in the cecum.
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Tsuchida T, Tanaka R, Kobayashi K, Ueki K, Koizumi R. [Development of 2 cell pattern pinealoma 15 years after total removal of pineal teratoma]. No To Shinkei 1976; 28:893-9. [PMID: 1036077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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