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Motoki T, Shimizu-Motohashi Y, Saito I, Komaki H, Ishiyama A, Aibara K, Jogamoto T, Tezuka Y, Kawabe M, Makino A, Nagatani K, Tatara K, Kuwabara K, Kikuchi C, Fukuda M, Ishii E, Eguchi M. Renal dysfunction can occur in advanced-stage Duchenne muscular dystrophy. Muscle Nerve 2019; 61:192-197. [PMID: 31725904 DOI: 10.1002/mus.26757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 06/05/2019] [Revised: 11/08/2019] [Accepted: 11/12/2019] [Indexed: 11/10/2022]
Abstract
INTRODUCTION With improved treatments, patients with Duchenne muscular dystrophy (DMD) can survive far beyond adolescence. However, advanced-stage DMD patients are at risk of developing renal dysfunction. In this study, long-term renal function outcomes and associated risk factors in advanced stage DMD were analyzed. METHODS Fifty-one patients were classified into three different age groups (<20, 20-29, and ≥30 years of age), and cystatin C (CysC) levels were compared among groups. RESULTS Median serum CysC levels were 0.74 mg/L, 0.63 mg/L, and 0.76 mg/L in the age groups of <20, 20-29, and ≥30 years, respectively (P = .003). Five of the nine patients in the ≥30 years age group showed elevated serum CysC and decreased cardiac function compared with the other four in the group (P = .014). DISCUSSION Our results indicate an association between cardiac and renal dysfunction in patients with advanced-stage DMD.
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Affiliation(s)
- Takahiro Motoki
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Yuko Shimizu-Motohashi
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Isao Saito
- Department of Public Health and Epidemiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Hirofumi Komaki
- Translational Medical Center, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Kaori Aibara
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Toshihiro Jogamoto
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Yuko Tezuka
- Division of Pediatrics, Ehime Prefectural Niihama Hospital, Niihama, Ehime, Japan
| | - Mika Kawabe
- Ehime Rehabilitation Center for Children, Toon, Ehime, Japan
| | - Akira Makino
- Division of Pediatrics, Ehime Prefectural Niihama Hospital, Niihama, Ehime, Japan
| | - Koji Nagatani
- Division of Pediatrics, Uwajima City Hospital, Uwajima, Ehime, Japan
| | - Katsunori Tatara
- Division of Child Neurology, Shikoku Medical Center for Children and Adults, Zentsuji, Kagawa, Japan
| | - Kozue Kuwabara
- Division of Pediatrics, Ehime Prefectural Central Hospital, Matsuyama, Ehime, Japan
| | - Chiya Kikuchi
- Division of Pediatrics, National Hospital Organization Ehime Medical Center, Toon, Ehime, Japan
| | - Mitsumasa Fukuda
- Division of Pediatric Neurology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Eiichi Ishii
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Mariko Eguchi
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
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Kawabe M, Sato A, Hoshi T, Aonuma K. 5711Impact of in-stent neoatherosclerosis assessed by optical coherent tomography on cardiac troponin elevation after percutaneous coronary intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5711] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Iwasaki R, Murakami M, Kawabe M, Heishima K, Sakai H, Mori T. Metastatic diagnosis of canine sternal lymph nodes using computed tomography characteristics: A retrospective cross-sectional study. Vet Comp Oncol 2017; 16:140-147. [DOI: 10.1111/vco.12323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/13/2017] [Accepted: 04/28/2017] [Indexed: 12/12/2022]
Affiliation(s)
- R. Iwasaki
- Animal Medical Center, Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
| | - M. Murakami
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
| | - M. Kawabe
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
| | - K. Heishima
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
| | - H. Sakai
- Department of Veterinary Pathology; Faculty of Applied Biological Sciences, Gifu University; Gifu Japan
| | - T. Mori
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
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Niikura T, Kobayashi A, Kawabe M, Katsuma A, Yamakawa T, Katsumata H, Mafune A, Nakada Y, Yamamoto I, Tanno Y, Ohkido I, Okumi M, Ishida H, Yamamoto H, Yokoo T, Tanabe K. Clinicopathologic Impact of Early Medullary Ray Injury in Patients Following Kidney Transplantation. Transplant Proc 2017; 49:78-83. [PMID: 28104164 DOI: 10.1016/j.transproceed.2016.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Previously, we explored the histopathologic characteristics of medullary ray injury (MRI) inducing interstitial fibrosis and tubular atrophy (IF/TA) to determine its etiologies, which include calcineurin inhibitor (CNI) toxicity and urologic complications. However, we did not examine the effects of these etiologies on long-term kidney allograft prognosis, because biopsy timing differed among cases. AIM We examined the influence of early MRI on kidney allograft prognosis using protocol biopsies taken within a 3-month time frame. METHODS We defined early MRI as tubular degeneration with interstitial edema or mild fibrosis localized to the medullary ray. We divided 53 protocol biopsies into 2 groups, with and without early MRI. Early MRI+ cases with isometric vacuolization were classified as CNI toxicity; those with Tamm-Horsfall protein in the interstitium and a thyroidlike appearance were classified as urinary tract system abnormalities; remaining cases were classified as "others." We compared changes in serum levels of creatinine (sCr) over 3 years and fibrosis extent at 1 year. RESULTS The sCr levels were significantly higher in the MRI+ group than the MRI- group at 3 years (P = .024). Examining the 3 MRI+ subgroups, only the MRI+ urinary tract system abnormalities group had significantly high sCr levels compared to the MRI- group (P = .019). The MRI+ group showed significant signs of IF/TA at 1 year. CONCLUSIONS Early MRI after kidney transplantation was significantly more likely to develop IF/TA at 1 year and had higher sCr levels at 3 years. In such cases, intervention might preserve graft function over the long term.
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Affiliation(s)
- T Niikura
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - A Kobayashi
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
| | - M Kawabe
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - A Katsuma
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - T Yamakawa
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - H Katsumata
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - A Mafune
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Y Nakada
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - I Yamamoto
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Y Tanno
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - I Ohkido
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - M Okumi
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - H Ishida
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - H Yamamoto
- Department of Internal Medicine, Atsugi City Hospital, Kanagawa, Japan
| | - T Yokoo
- Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - K Tanabe
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
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Fukuda M, Kawabe M, Takehara M, Iwano S, Kuwabara K, Kikuchi C, Wakamoto H, Morimoto T, Suzuki Y, Ishii E. Carnitine deficiency: Risk factors and incidence in children with epilepsy. Brain Dev 2015; 37:790-6. [PMID: 25547040 DOI: 10.1016/j.braindev.2014.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/10/2014] [Accepted: 12/10/2014] [Indexed: 11/08/2022]
Abstract
BACKGROUND Carnitine deficiency is relatively common in epilepsy; risk factors reportedly include combination antiepileptic drug (AED) therapy with valproic acid (VPA), young age, intellectual disability, diet and enteral or parenteral feeding. Few studies have examined the correlation between each risk factor and carnitine deficiency in children with epilepsy. We examined the influence of these risk factors on carnitine deficiency, and identified a formula to estimate plasma free carnitine concentration in children with epilepsy. METHODS Sixty-five children with epilepsy and 26 age-matched controls were enrolled. Plasma carnitine concentrations were measured using an enzyme cycling assay, and correlations were sought with patients' other clinical characteristics. RESULTS Carnitine deficiency was found in approximately 17% of patients with epilepsy and was significantly associated with carnitine-free enteral formula only by tube feeding, number of AEDs taken (independent of VPA use), body weight (BW), body height and Gross Motor Function Classification System (GMFCS) score. Stepwise multiple linear regression analysis indicated that carnitine concentration (in μmol/L) could be accurately estimated from a formula that does not require blood testing: 42.44+0.14×(BW in kg)-18.16×(feeding)-3.19×(number of AEDs), where feeding was allocated a score of 1 for carnitine-free enteral formula only by tube feeding and 0 for taking food orally (R(2)=0.504, P<0.001). CONCLUSIONS Carnitine-free enteral formula only by tube feeding, multiple AED treatment and low BW are risk factors for carnitine deficiency in children with epilepsy. l-carnitine should be administered to children at risk of deficiency to avoid complications. Treatment decisions can be informed using an estimation formula that does not require blood tests.
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Affiliation(s)
- Mitsumasa Fukuda
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan.
| | - Mika Kawabe
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Makoto Takehara
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Sachiko Iwano
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Kozue Kuwabara
- Ehime Rehabilitation Center for Children, Toon, Ehime, Japan
| | - Chiya Kikuchi
- Ehime Rehabilitation Center for Children, Toon, Ehime, Japan
| | | | | | - Yuka Suzuki
- Ehime Rehabilitation Center for Children, Toon, Ehime, Japan
| | - Eiichi Ishii
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
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Mori T, Ito Y, Kawabe M, Iwasaki R, Sakai H, Murakami M, Maruo K. Three-dimensional conformal radiation therapy for inoperable massive hepatocellular carcinoma in six dogs. J Small Anim Pract 2015; 56:441-5. [DOI: 10.1111/jsap.12352] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 02/16/2015] [Accepted: 02/23/2015] [Indexed: 01/15/2023]
Affiliation(s)
- T. Mori
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - Y. Ito
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - M. Kawabe
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - R. Iwasaki
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - H. Sakai
- Department of Veterinary Pathology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - M. Murakami
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
| | - K. Maruo
- Department of Veterinary Clinical Oncology, Faculty of Applied Biological Sciences; Gifu University; 1-1 Yanagido Gifu 501-1193 Japan
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Kawabe M, Urade M, Noguchi K, Takaoka K, Zushi Y, Yoshikawa K, Kishimoto H. IL-34 plays a role for differentiation of osteoclasts in inflammatory bone destruction of alveolar bone. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.141] [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: 12/01/2022]
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Shiohira S, Yoshida T, Sugiura H, Nishida M, Nitta K, Tsuchiya K, Grampp S, Goppelt-Strube M, Eckardt KU, Schodel J, Kang SW, Kim Y, Seo SK, Kim T, Ong S, Yang WS, Han NJ, Lee JM, Baek CH, Park SK, Kemter E, Aigner B, Wanke R, Troyano Suarez N, Olmos Centenero G, Mora I, Griera M, Cano JL, Martin P, Zamora J, Ruiz-Torres MP, Falke LL, Leask A, Lyons K, Nguyen TQ, Goldschmeding R, Park SK, Kim D, Lee AS, Jung YJ, Yang KH, Lee S, Kim W, Kim W, Kang KP, Garcia-Jerez A, Luengo-Rodriguez A, Ramirez-Chamond R, Carracedo J, Medrano-Andres D, Rodriguez-Puyol D, Calleros L, Kim HW, Park SK, Yang WS, Lee SK, Chang JW, Seo JW, Lee CT, Chou CA, Lee YT, Ng HY, Sanchez-Nino MD, Fernandez-Fernandez B, Perez-Gomez MV, Poveda J, Sanz AB, Cannata-Ortiz P, Egido J, Selgas R, Ortiz A, Ma SK, Kim IJ, Kim CS, Bae EH, Kim SW, Kokeny G, Boo'Si M, Fazekas K, Rosivall L, Mozes MM, Mijuskovic M, Ulrich C, Berger H, Trojanowicz B, Kohler F, Wolf A, Seibert E, Fiedler R, Markau S, Glomb M, Girndt M, Lajdova I, Spustova V, Oksa A, Chorvat D, Marcek Chorvatova A, Choi SO, Kim JS, Han BG, Yang JW, Liu S, Lv J, Chang R, Su F, Liang W, Zawada AM, Rogacev KS, Hundsdorfer J, Sester U, Fliser D, Heine GH, Chen JS, Cheng CW, Chang LC, Wu CZ, Novaes AS, Borges FT, Boim MA, Tramonti G, Romiti N, Chieli E, Hamahata S, Nagasawa Y, Kawabe M, Kida A, Yahiro M, Nanami M, Hasuike Y, Kuragano T, Nakasho K, Ohyama H, Nakanishi T, Tanaka S, Yano S, Sugimoto T, Bae E, Stevens KK, Hillyard DZ, Delles C, Jardine AG, Burke M, Morais C, Soyer P, Sinnya S, Winterford C, Oliver K, Lambie D, Staatz C, Carroll R, Campbell S, Isbel N, Felaco P, Pesce M, Patruno A, Sirolli V, Speranza L, Amoroso L, Franceschelli S, Bonomini M, Thilo F, Zakrzewicz A, Tepel M, Thilo F, Zakrzewicz A, Tepel M, Liu S, Li Y, Liang W, Su F, Wang B. CELL SIGNALLING AND APOPTOSIS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu161] [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: 11/14/2022] Open
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9
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Tokuda K, Eguchi-Ishimae M, Yagi C, Kawabe M, Moritani K, Niiya T, Tauchi H, Ishii E, Eguchi M. CLTC-ALK fusion as a primary event in congenital blastic plasmacytoid dendritic cell neoplasm. Genes Chromosomes Cancer 2013; 53:78-89. [PMID: 24142740 DOI: 10.1002/gcc.22119] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 09/26/2013] [Indexed: 01/28/2023] Open
Abstract
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a subtype of acute myeloid leukemia, affecting mainly the elderly. It is thought to be derived from plasmacytoid dendritic cell precursors, which frequently present as cutaneous lesions. We have made a detailed analysis of an infant with BPDCN, who manifested with hemophagocytic lymphohistiocytosis. The peripheral blood leukocytes revealed the t(2;17;8)(p23;q23;p23) translocation and a CLTC-ALK fusion gene, which have never been reported in BPDCN or in any myeloid malignancies thus far. Neonatal blood spots on the patient's Guthrie card were analyzed for the presence of the CLTC-ALK fusion gene, identifying the in utero origin of the leukemic cell. Although the leukemic cells were positive for CD4, CD56, CD123, and CD303, indicating a plasmacytoid dendritic cell phenotype, detailed analysis of the lineage distribution of CLTC-ALK revealed that part of monocytes, neutrophils, and T cells possessed the fusion gene and were involved in the leukemic clone. These results indicated that leukemic cells with CLTC-ALK originated in a multipotent hematopoietic progenitor in utero. This is the first report of the CLTC-ALK fusion gene being associated with a myeloid malignancy, which may give us an important clue to the origin of this rare neoplasm.
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Affiliation(s)
- Kiriko Tokuda
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
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Hoshi T, Sato A, Kawabe M, Sakai S, Kakefuda Y, Abe D, Takeyasu N, Noguchi Y, Aonuma K. The prognostic value of discharge heart rate in patients with impaired left ventricular function after acute myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1321] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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11
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Kawabe M, Urano K, Suguro M, Numano T, Taguchi F, Tsutsumi H, Furukawa F. Tumor Promotion by 12-O-Tetradecanoylphorbol-13-Acetate in an Ultra-Short-Term Skin Carcinogenesis Bioassay Using rasH2 Mice. Vet Pathol 2013; 50:903-8. [DOI: 10.1177/0300985813486811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Assessment of the skin tumor–promoting potential of 12- O-tetradecanoylphorbol-13-acetate (TPA) after initiation with 7,12-dimethylbenz[ a]anthracene (DMBA) was conducted using rasH2 transgenic (Tg) mice and their nontransgenic (non-Tg) littermates. Mice were treated with DMBA (50 μg/100 μL acetone) on clipped back skin at the commencement of the study, and 1 week thereafter, TPA was applied at 8 μg/200 μL or 4 μg/200 μL acetone, once or twice weekly, for 7 weeks. Skin nodules were observed in the rasH2 Tg mice from week 4, and the incidence reached 100% at weeks 5 and 6. The number of skin nodules (multiplicity) in the 8-μg twice-weekly, 8-μg once-weekly, 4-μg twice-weekly, and 4-μg once-weekly groups was 62.4, 46.2, 62.6, and 36.9, respectively. The non-Tg mice also developed skin nodules, but the sensitivity to induction in the rasH2 Tg mice was higher. No nodules were observed in the acetone groups, but single nodules were apparent in the no-treatment rasH2 Tg and non-Tg groups. In conclusion, skin promotion effects could be detected within only 8 weeks in the rasH2 mice, and the concentration of 4 μg TPA once weekly was sufficient as a positive control. This short-term skin carcinogenesis bioassay using rasH2 mice could represent a useful tool for the assessment of drug and chemical safety with cutaneous treatment.
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Affiliation(s)
- M. Kawabe
- DIMS Institute of Medical Science, Inc., Azai-cho, Ichinomiya, Japan
| | - K. Urano
- Central Institute for Experimental Animals, Kawasaki-ku, Kawasaki, Japan
| | - M. Suguro
- DIMS Institute of Medical Science, Inc., Azai-cho, Ichinomiya, Japan
| | - T. Numano
- DIMS Institute of Medical Science, Inc., Azai-cho, Ichinomiya, Japan
| | - F. Taguchi
- CLEA Japan, Inc., Meguro-ku, Tokyo, Japan
| | - H. Tsutsumi
- Central Institute for Experimental Animals, Kawasaki-ku, Kawasaki, Japan
| | - F. Furukawa
- DIMS Institute of Medical Science, Inc., Azai-cho, Ichinomiya, Japan
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Urano K, Yasuda M, Tsutsumi H, Kawabe M, Suguro M, Numano T, Furukawa F. Establishment of two-stage skin carcinogenicity study in CB6F1 Tg rasH2 mice. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Muneoka K, Shirayama Y, Kon K, Kawabe M, Goto M, Kimura S. Improvement of mutism in a catatonic schizophrenia case by add-on treatment with amantadine. Pharmacopsychiatry 2009; 43:151-2. [PMID: 20571993 DOI: 10.1055/s-0029-1242821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Asaoka D, Nagahara A, Oguro M, Kurosawa A, Osada T, Kawabe M, Hojo M, Yoshizawa T, Otaka M, Ogihara T, Watanabe S. Utility of autofluorescence imaging videoendoscopy in screening for Barrett's esophagus. Endoscopy 2009; 41 Suppl 2:E113. [PMID: 19544253 DOI: 10.1055/s-0029-1214630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- D Asaoka
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan.
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Tanaka H, Nishizaka Y, Yamazaki M, Kawabe M, Watanabe H, Nakade M. [Massive hemoptysis after lobectomy for bronchiectasis]. Kyobu Geka 2009; 62:892-895. [PMID: 19764496] [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: 05/28/2023]
Abstract
A 67-years-old female, who was suffered from hemoptysis for about 50 years and was diagnosed as bronchiectasis of left lower lobe, was admitted to our hospital to receive elective surgical treatment. Left lower lobectomy was performed, and on the 10th postoperative day, massive hemoptysis occurred and intratracheal hemorrhage caused occlusion of the respiratory tract. Selective bronchial arteriogram revealed that bronchial artery of the left upper lobe developed remarkably, compared with the findings 1 year ago, and the bleeding site was located in the left upper lobe, which seemed to be almost normal before the operation. After embolization of this artery the hemoptysis stopped. If bronchial artery, which develop well and distribute to the bleeding lobe of the lung, have branches to adjacent another lobe, change of blood stream of bronchial artery by operation may cause early postoperative recurrence of hemoptysis.
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Affiliation(s)
- Hirokazu Tanaka
- Department of Chest Surgery, Osaka Red Cross Hospital, Osaka, Japan
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16
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Tanaka H, Yamazaki N, Kawabe M, Watanabe H, Nakade M. [Ganglioneuroma derived from inferior trunk of the brachial plexus and first intercostal nerve]. Kyobu Geka 2009; 62:799-801. [PMID: 19670782] [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: 05/28/2023]
Abstract
A 62-years-old Japanese male, who had mediastinal tumor at the left thoracic inlet, was admitted to our hospital to receive surgical treatment. The tumor behind the left subclavian artery was guessed to be neurogenic benign tumor, though the involvement of the brachial plexus was unclear. We approached the tumor by means of left hemi-collar skin incision, resulting in performing safe operation with directly looking at the tumor that communicated with 1st intercostal nerve and inferior trunk of the left brachial plexus. Pathological diagnosis of the resected tumor was ganglioneuroma. Cervical approach by means of hemi-collar skin incision is thought to be available for surgical treatment of tumors at the thoracic inlet because of easy accessibility and less invasiveness than other approach with dividing bones, such as clavicle, sternum, or ribs.
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Affiliation(s)
- H Tanaka
- Department of Chest Surgery, Osaka Red Cross Hospital, Osaka, Japan
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Sato S, Takakura K, Ochiai K, Kondo K, Tatebe Y, Ohnishi S, Wada M, Kutsukake C, Tanaka S, Abe Y, Kawabe M, Konno C. Measurement of Reaction Rate Distribution in Partial Mockups for the ITER TBM with DT Neutrons. Fusion Science and Technology 2009. [DOI: 10.13182/fst09-a8907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Sato
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - K. Takakura
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - K. Ochiai
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - K. Kondo
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - Y. Tatebe
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - S. Ohnishi
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - M. Wada
- Japan Computer System, Mito-shi, Ibaraki-ken, Japan, 319-1117,
| | - C. Kutsukake
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - S. Tanaka
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - Y. Abe
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - M. Kawabe
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
| | - C. Konno
- Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken, Japan, 319-1117
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Asaoka D, Nagahara A, Kurosawa A, Osada T, Kawabe M, Hojo M, Yoshizawa T, Otaka M, Ohkusa T, Ogihara T, Watanabe S. Utility of autofluorescence imaging videoendoscopy system for the detection of minimal changes associated with reflux esophagitis. Endoscopy 2008; 40 Suppl 2:E172-3. [PMID: 18668460 DOI: 10.1055/s-2007-995803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- D Asaoka
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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Nakagawa K, Kitano M, Kishida H, Hidaka T, Nabae K, Kawabe M, Hosoe K. 90-Day repeated-dose toxicity study of licorice flavonoid oil (LFO) in rats. Food Chem Toxicol 2008; 46:2349-57. [PMID: 18448224 DOI: 10.1016/j.fct.2008.03.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 02/27/2008] [Accepted: 03/13/2008] [Indexed: 11/25/2022]
Abstract
Licorice flavonoid oil (LFO) is a new functional food ingredient consisting of licorice hydrophobic polyphenols in medium-chain triglycerides (MCT). As part of a safety evaluation, a 90-day oral toxicity study in rats was conducted using an LFO concentrate solution (2.90% glabridin). Male and female animals were assigned to one of 12 groups (10 males or females per group) and received corn oil (negative control), MCT (vehicle control), or 400, 600, 800 or 1600 mg/kg of the LFO concentrate solution. In conclusion, LFO concentrate solution induced an anticoagulation effect in both sexes, although there was a clear sex difference. Based on these findings, it is concluded that the no-observed-adverse-effect level (NOAEL) for the LFO concentrate solution is estimated to be 800 mg/kg/day for female rats, and approximately 400 mg/kg/day for male rats.
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Affiliation(s)
- K Nakagawa
- Functional Food Ingredients Division, Healthcare Products Business Unit, Kaneka Corporation, 3-2-4, Nakanoshima, Kita-ku, Osaka 530-8288, Japan
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20
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Song HZ, Usuki T, Ohshima T, Sakuma Y, Kawabe M, Okada Y, Takemoto K, Miyazawa T, Hirose S, Nakata Y, Takatsu M, Yokoyama N. Site-controlled quantum dots fabricated using an atomic-force microscope assisted technique. Nanoscale Res Lett 2006; 1:160. [PMCID: PMC3246671 DOI: 10.1007/s11671-006-9012-x] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
An atomic-force microscope assisted technique is developed to control the position and size of self-assembled semiconductor quantum dots (QDs). Presently, the site precision is as good as ± 1.5 nm and the size fluctuation is within ± 5% with the minimum controllable lateral diameter of 20 nm. With the ability of producing tightly packed and differently sized QDs, sophisticated QD arrays can be controllably fabricated for the application in quantum computing. The optical quality of such site-controlled QDs is found comparable to some conventionally self-assembled semiconductor QDs. The single dot photoluminescence of site-controlled InAs/InP QDs is studied in detail, presenting the prospect to utilize them in quantum communication as precisely controlled single photon emitters working at telecommunication bands.
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Affiliation(s)
- HZ Song
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - T Usuki
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - T Ohshima
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - Y Sakuma
- Nanomaterials Laboratory, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
| | - M Kawabe
- Nanomaterials Laboratory, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
| | - Y Okada
- Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8773, Japan
| | - K Takemoto
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - T Miyazawa
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - S Hirose
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - Y Nakata
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - M Takatsu
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
| | - N Yokoyama
- Nanotechnology Research center, Fujitsu Lab. Ltd., Morinosato-Wakamiya 10-1, Atsugi, Kanagawa, 243-0197, Japan
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Kawabe M, Sasaki K, Shinoda T, Tanabe S, Handa M, Hirai S, Yamada N, Uesaka T, Morioka K, Ihaya A, Tanaka K, Imamura Y. [Yolk sac tumor of the anterior mediastinum and pulmonary metastases; report of a case]. Kyobu Geka 2005; 58:1102-5. [PMID: 16281866] [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
A 31-year-old female was clinically diagnosed as having a anterior mediastinal yolk sac tumor because of the elevation of the AFP (17,500 ng/ml), a large mass lesion (9 x 5 cm) in the anterior mediastinum and bilateral lung metastases. After 4 courses of chemotherapy with cisplatin (CDDP), etoposide (VP-16) and bleomycin hydrochloride (BLM), the mediastinal mass reduced in size significantly and the serum AFP level reached within normal range. Fluorodeoxyglucose-positron emission tomography (FDG-PET) showed a weak uptake in the mediastinum, accordingly the operation was performed. The tumor was completely removed and there were no viable foci of the tumor in part of the tumor. After the operation, 4 courses of chemotherapy with carboplatin (CBDCA), VP-16 and ifosfamide (IFM) were performed. She is alive without evidence of recurrence in 5 months after operation. It was noticed that the serum AFP is a useful indicator for determing the chance of operation after chemotherapy.
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Affiliation(s)
- M Kawabe
- Department of Second Surgery, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
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Hagiwara A, Yoshino H, Sano M, Kawabe M, Tamano S, Sakaue K, Nakamura M, Tada M, Imaida K, Shirai T. Thirteen-week feeding study of thaumatin (a natural proteinaceous sweetener), sterilized by electron beam irradiation, in Sprague–Dawley rats. Food Chem Toxicol 2005; 43:1297-302. [PMID: 15907353 DOI: 10.1016/j.fct.2005.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2004] [Revised: 03/24/2005] [Accepted: 04/05/2005] [Indexed: 10/25/2022]
Abstract
This study was designed to evaluate and characterize any subchronic toxicity of thaumatin sterilized by electron beam irradiation (5.0 kGy) when administered at dietary levels of 0% (control), 0.3%, 1.0% and 3.0% to groups of 10 male and 10 female Crj: CD (SD) IGS rats for 13 weeks. Separate groups of both sexes received 3.0% non-irradiated thaumatin. There were no treatment-related clinical signs or adverse effects on the survival rate, body weight, food consumption, water consumption and urinalysis, ophthalmology, haematology, or blood biochemistry data. No treatment-related alterations in gross pathology or organ weights were found in any group. On histopathological examination, sporadic spontaneous lesions known to occur in this strain of rats were the only findings, with no specific relation to the test substance. Thus, the no-observed-adverse-effect-level (NOAEL) was judged to be a dietary level of at least 3.0% (2502 mg/kg body weight/day for males, 2889 mg/kg body weight/day for females) for electron beam irradiated thaumatin under the present experimental conditions. It was concluded that electron beam-irradiation of thaumatin does not cause changes of any toxicological significance.
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Affiliation(s)
- A Hagiwara
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya 491-0113, Japan.
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Kitano M, Hosoe K, Fukutomi N, Hidaka T, Imai N, Kawabe M. 28-Day repeated dose toxicity study of dried microorganism in rats. Food Chem Toxicol 2004; 42:1817-24. [PMID: 15350679 DOI: 10.1016/j.fct.2004.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2003] [Accepted: 06/18/2004] [Indexed: 10/26/2022]
Abstract
Ubidecarenone, also known as CoQ(10), is currently sold as a dietary supplement in the United States, with a majority of these products derived from the fermentation of carbohydrates or tobacco leaf extracts. In addition to its availability in dietary supplements, CoQ(10) is now being considered for use in foods. Accordingly, as part of the process for attaining "Generally Recognized as Safe" status, and to supplement information already available regarding the safety of CoQ(10) per se, a 28-day oral toxicity study in rats was conducted to evaluate the subacute safety of a microorganism biomass used as a new source in CoQ(10) production. Groups of Crj:CD(SD) rats (SPF) (6 males or females per group, 4 groups per sex) received dried microorganism at doses of 0, 500, 1000 or 2000 mg/kg/day via intragastric intubation. Clinical observations were recorded, and body weight, and food and water consumptions measured throughout the study. At the end of the study, aortic blood samples were collected from all animals for analysis of hematological and clinical chemistry parameters, and gross pathologic examination was performed. Histopathologic examination was performed on select tissues from the control and high-dose groups. There were no treatment-related changes that were considered to be of toxicological significance. Since rats treated with 2000 mg/kg of dried microorganism did not demonstrate any treatment-related changes, the no-observable-adverse-effect level (NOAEL) for dried microorganism was estimated to be greater than 2000 mg/kg/day under the present study conditions.
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Affiliation(s)
- M Kitano
- Life Science Research Laboratories, Kaneka Corporation, 1-8 Miyamae-Machi, Takasago-cho, Takasago-shi, Hyogo 676-8688, Japan.
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Miwa H, Minoo T, Hojo M, Yaginuma R, Nagahara A, Kawabe M, Ohkawa A, Asaoka D, Kurosawa A, Ohkusa T, Sato N. Oesophageal hypersensitivity in Japanese patients with non-erosive gastro-oesophageal reflux diseases. Aliment Pharmacol Ther 2004; 20 Suppl 1:112-7. [PMID: 15298616 DOI: 10.1111/j.1365-2036.2004.01990.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Visceral hypersensitivity plays a major role in the pathogenesis of non-erosive oesophageal reflux disease (NERD). Prevalence of NERD differs according to the population and geographical region. Oesophageal hypersensitivity in NERD has not been well studied, especially in Japanese patients. AIM To investigate oesophageal hypersensitivity in Japanese NERD patients. PATIENTS AND METHODS We performed upper GI endoscopy and the modified acid perfusion test on 14 control subjects and 68 GERD patients, including 26 with NERD, 34 with erosive GERD, and six with Barrett's oesophagus. The stimulus-response function to acid was quantified by three parameters (lag time, intensity rating and the acid perfusion sensory score) and compared among four groups. RESULTS The mean value of the lag time, intensity rating, and acid perfusion scores in NERD patients (4.6 +/- 3.4, 4.4 +/- 3.4, 27.8 +/- 26.7, respectively) were higher than in erosive GERD (3.2 +/- 3.3, 3.0 +/- 3.2, 18.2 +/- 24.8) and Barrett patients (2.5 +/- 4.0, 1.8 +/- 3.3, 15.0 +/- 28.8), and significantly higher than in the control group (1.7 +/- 2.7, 1.1 +/- 2.0, 5.4 +/- 11.8). The ratio of patients with higher sensory scores was also greater in the NERD group (57.7%) than in erosive GERD (32.3%) and Barrett group (16.7%), and significantly greater than in control group (6.7%). CONCLUSION Our findings suggest that oesophageal sensitivity is likely to be enhanced especially in NERD patients also in Japanese population in comparison with erosive GERD, Barrett's oesophagus and controls.
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Affiliation(s)
- H Miwa
- Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
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25
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Fukui H, Hara S, Hashimoto Y, Horiuchi T, Ikezoe M, Itami N, Kawabe M, Kawanishi H, Kimura H, Nakamoto Y, Nakayama M, Ono M, Ota K, Shinoda T, Suga T, Ueda T, Fujishima M, Maeba T, Yamashita A, Yoshino Y, Watanabe S. Review of combination of peritoneal dialysis and hemodialysis as a modality of treatment for end-stage renal disease. Ther Apher Dial 2004; 8:56-61. [PMID: 15128021 DOI: 10.1111/j.1526-0968.2004.00107.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Because the contribution of residual renal function (RRF) to total solute clearance is often significant in continuous ambulatory peritoneal dialysis (CAPD), loss of RRF over time can lead to inadequate dialysis if appropriate prescription management strategies are not pursued. Additionally, declines in ultrafiltration caused by increases in peritoneal permeability may limit continuation of CAPD therapy. Peritoneal dialysis and hemodialysis (PD + HD) combination therapy (complementary dialysis therapy) is an alternative method. This therapy allows the patient to maintain daily activities, as with CAPD, while undergoing once-a-week HD supplements for the insufficient removal of solutes and water. This therapy allows for the continuation of PD without shifting to total HD in PD patients who continue to have uremic symptoms even after individualization of the PD prescription. This treatment option is psychologically more acceptable to patients and may be expected to provide such accompanying beneficial effects as peritoneal resting, improvement of QOL and reduction in medical cost.
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Ohshima T, Song HZ, Okada Y, Akahane K, Miyazawa T, Kawabe M, Yokoyama N. Precisely ordered quantum dot array formed using AFM lithography for all-optical electron spin quantum computers. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pssc.200303096] [Citation(s) in RCA: 17] [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: 11/06/2022]
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Utsumi K, Tsuji A, Kase R, Tanaka A, Tanaka T, Uyama E, Ozawa T, Sakuraba H, Komaba Y, Kawabe M, Iino Y, Katayama Y. Western blotting analysis of the beta-hexosaminidase alpha- and beta-subunits in cultured fibroblasts from cases of various forms of GM2 gangliosidosis. Acta Neurol Scand 2002; 105:427-30. [PMID: 12027830 DOI: 10.1034/j.1600-0404.2002.01097.x] [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] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The GM2 gangliosidoses are a group of genetic disorders caused by the accumulation of ganglioside GM2 in neuronal cells. We examined the alpha- and beta-subunits of beta-hexosaminidases by a non-radioisotopes detecting system to evaluate whether it was a useful method for understanding of the pathophysiologies of GM2 gangliosidoses. MATERIALS AND METHODS We investigated the alpha- and beta-subunits of beta-hexosaminidases in cultured fibroblasts from cases of various forms of GM2 gangliosidosis by means of Western blotting and a chemiluminescence detection system. RESULTS In a patient with infantile Tay-Sachs disease [HEXA genotype, Int5-SA(g-1-->t)/Int5-SA(g-1-->t)], the mature alpha-subunit was undetectable. In a patient with infantile Sandhoff disease (HEXB genotype, C534Y/C534Y), the mature beta-subunit was deficient. However, a small amount of the mature beta-subunit was detected in a patient with adult Sandhoff disease (HEXB genotype, R505Q(+I207V)/R505Q(+I207V)), which may have resulted in the residual enzyme activity and mild clinical course. Normal amounts of alpha- and beta-subunits were detected in a patient with GM2 activator deficiency. CONCLUSION This method is easy and sensitive for detecting target proteins, and is useful for clarification of the pathophysiologies of GM2 gangliosidoses.
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Affiliation(s)
- K Utsumi
- The Second Department of Internal Medicine, Nippon Medical School, Bunkyo-ku, Tokyo, Japan. utsumi_kouichi/
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Kawabe M, Lin C, Kimoto N, Sano M, Hirose M, Shirai T. Modifying effects of propolis on MeIQx promotion of rat hepatocarcinogenesis and in a female rat two-stage carcinogenesis model after multiple carcinogen initiation. Nutr Cancer 2001; 37:179-86. [PMID: 11142091 DOI: 10.1207/s15327914nc372_10] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The modifying effects of the dietary administration of water- and ethanol-extracted propolis produced in Brazil (WB and EB, respectively) on 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) promotion of rat hepatocarcinogenesis were investigated in a medium-term liver bioassay system with use of male Fischer 344 rats. The number and area of glutathione S-transferase placental form (GST-P)-positive foci in rats given 0.5% WB were significantly increased compared with the group given MeIQx alone. Furthermore, the numbers of GST-P-positive foci were higher in rats given 0.1% WB or EB than in those given the basal diet alone. The modifying effects of propolis on other organs were also examined in female Fischer 344 rats given multiple carcinogens for initiation. Rats received water- and ethanol-extracted propolis produced in Brazil and Uruguay (WB, EB, WU, and EU, respectively) in the diet after exposure to three different carcinogens. The incidence of total mammary tumors was significantly lower in rats given EU than in the control group. These results indicate that a water extract of propolis exerts a cocarcinogenic effect on MeIQx hepatocarcinogenesis while promoting the effect at low dose in a two-stage hepatocarcinogenesis model. Moreover, they suggest that ethanol-extracted propolis may be an inhibitor of mammary gland carcinogenesis.
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Affiliation(s)
- M Kawabe
- First Department of Pathology, Nagoya City University Medical School, Nagoya 467-8601, Japan
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Kato T, Tsuji H, Ando T, Takahashi Y, Nakajima H, Sugimoto M, Isono T, Koizumi N, Kawano K, Oshikiri M, Hamada K, Nunoya Y, Matsui K, Shinba T, Tsuchiya Y, Nishijima G, Kubo H, Hara E, Hanawa H, Imahashi K, Ootsu K, Uno Y, Oouchi T, Okayama J, Kawasaki T, Kawabe M, Seki S, Takano K, Takaya Y, Tajiri F, Tsutsumi A, Nakanura T, Hanawa H, Wakabayashi H, Nishii K, Hosogane N, Matsukawa M, Miura Y, Terakado T, Okano J, Shimada K, Yamashita M, Arai K, Ishigouoka T, Ninomiya A, Okuno K, Bessete D, Takigami H, Martovetsky N, Michael P, Takayasu M, Ricci M, Zanino R, Savoldi L, Zahn G, Martinez A, Maix R. First test results for the ITER central solenoid model coil. Fusion Engineering and Design 2001. [DOI: 10.1016/s0920-3796(01)00235-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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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Takada D, Kashiwagi T, Kaneko T, Ou T, Nakamura T, Usuda K, Kamiya T, Kawabe M, Iino Y, Katayama Y. [Continuous ambulatory peritoneal dialysis (CAPD) patient with peritoneal sarcoidosis leading to lowering of dialysis efficiency]. Nihon Naika Gakkai Zasshi 2001; 90:1342-4. [PMID: 11519117 DOI: 10.2169/naika.90.1342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- D Takada
- Second Department of Internal Medicine, Nippon Medical School, Tokyo
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31
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Kawabe M, Hagiwara A, Yoshino H, Miyashita K, Nakanishi T, Sano M, Tamano S, Okamoto K, Miura K, Tokado H. Epoprostenol sodium, a prostaglandin I2, lacks tumor promoting effects in a medium-term liver carcinogenesis bioassay in rats. Cancer Lett 2001; 162:141-7. [PMID: 11146218 DOI: 10.1016/s0304-3835(00)00632-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Potential modifying effects of epoprostenol sodium administration on liver carcinogenesis were investigated in male F344/DuCrj rats initially treated with N-nitrosodiethylamine (DEN). Two weeks after a single dose of DEN (200 mg/kg, intraperitoneally), rats daily received subcutaneously epoprostenol sodium at doses of 0, 1, 10 and 100 microg/kg, or were fed phenobarbital sodium (PB) at a dietary level of 500 parts per million (ppm) as positive control for 6 weeks. All animals were subjected to partial hepatectomy at week 3, and were killed at week 8. Prominent flushing of extremis and signs of behavioural depression occurred after injection and lasted for 1 h in rats given 100 microg/kg epoprostenol sodium. Such clinical signs were slight in rats treated with 10 microg/kg, but not observed with 1 microg/kg. Marked decrease in body weight gain was noted in rats given 100 microg/kg. Statistically significant changes in relative liver weights were not found in any group given the test chemical. Epoprostenol sodium did not significantly increase the quantitative values for glutathione S-transferase placental form (GST-P) positive liver cell foci observed after DEN initiation, in clear contrast to the positive control. The results thus demonstrate that epoprostenol sodium lacks modifying potential for liver carcinogenesis in our medium-term bioassay system.
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Affiliation(s)
- M Kawabe
- Daiyu-Kai Institute of Medical Science, 64 Goura, Nishiazai, Azai-cho, 491-0113, Inchinomiya, Japan
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Murai T, Miwa H, Ohkura R, Iwazaki R, Nagahara A, Sato K, Yamada T, Ota K, Tanaka H, Kawabe M, Minowa T, Takei Y, Miyazaki A, Sato N. The incidence of reflux oesophagitis after cure of Helicobacter pylori in a Japanese population. Aliment Pharmacol Ther 2000; 14 Suppl 1:161-5. [PMID: 10807418 DOI: 10.1046/j.1365-2036.2000.014s1161.x] [Citation(s) in RCA: 19] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIM To investigate the incidence of reflux oesophagitis after antibacterial therapy for Helicobacter pylori infection in our patient population. METHODS Subjects were 451 H. pylori-infected patients (primary symptom: peptic ulcer disease in 347, nonulcer dyspepsia in 100, and reflux oesophagitis in four): 11 of these patients had reflux oesophagitis on study entry. H. pylori infection was treated by a proton pump inhibitor/amoxycillin-clarithromycin regimen for either 7 or 14 days. Each patient was examined by endoscopy before treatment and more than 6 months after treatment to compare oesophageal findings. In addition, 227 patients were interviewed regarding reflux symptoms, using symptom questionnaires, before and more than 6 months after treatment. RESULTS Among 440 patients who did not have reflux oesophagitis prior to antibacterial treatment (340 peptic ulcer patients and 100 nonulcer dyspepsia patients), 23 patients whose infection was eradicated developed reflux oesophagitis (5.4%). The 11 patients who had reflux oesophagitis prior to treatment were all successfully cured of infection. Six of these patients showed no change in their oesophagitis, while the condition improved in three and worsened in two. Symptom scores improved in 34 of the 36 patients who reported reflux symptoms. Among 19 patients who showed persistent infection, only one developed reflux oesophagitis (5.2%), while none complained of newly developed symptoms following treatment. CONCLUSIONS Development of reflux oesophagitis after treatment of H. pylori infection was observed in a Japanese population. However, the incidence of this condition was comparable between those with persistent H. pylori infection and those in whom the infection was eradicated.
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Affiliation(s)
- T Murai
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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Kimoto N, Hirose M, Kawabe M, Satoh T, Miyataka H, Shirai T. Post-initiation effects of a super critical extract of propolis in a rat two-stage carcinogenesis model in female F344 rats. Cancer Lett 1999; 147:221-7. [PMID: 10660110 DOI: 10.1016/s0304-3835(99)00305-5] [Citation(s) in RCA: 27] [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] [Indexed: 11/16/2022]
Abstract
Post-initiation modifying effects of dietary administration of a super critical extract of propolis on major organs were examined using a two-stage carcinogenesis model. Groups of 21 or 22 F344 female rats were treated sequentially with 2,2'-dihydroxy-di-n-propylnitrosamine (DHPN, i.g.), 7,12-dimethylbenz[a]anthracene (DMBA, i.g.), 1,2-dimethylhydrazine (DMH, s.c.) and N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN, in drinking water) during the first 3 weeks for initiation, and then administered diet containing 0.1 or 0.01% propolis for 33 weeks. Further groups were treated with the carcinogens alone, 0.1% propolis alone or basal diet alone. All surviving animals were killed at week 36, and major organs were examined histopathologically for development of preneoplastic and neoplastic lesions. The incidence and multiplicity of mammary carcinomas were significantly decreased by the 0.1 and 0.01% propolis treatments. In the urinary bladder, the incidence of PN hyperplasia but not tumors was, in contrast, significantly increased by 0.1% propolis. Similarly, the number and area of glutathione S-transferase placental form (GST-P)-positive liver foci were significantly elevated with this high dose. The results indicate that a low dose of a super critical extract of propolis may find application as a potent chemopreventor of mammary carcinogenesis.
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Affiliation(s)
- N Kimoto
- First Department of Pathology, Nagoya City University Medical School, Nagoya, Japan
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35
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Yamauchi A, Shinozaki M, Shin Y, Kawabe M. Membrane characteristics of composite collodion membrane III. Effect of added NaClO4 on transport phenomena. J Memb Sci 1999. [DOI: 10.1016/s0376-7388(99)00167-2] [Citation(s) in RCA: 19] [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: 12/01/2022]
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36
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Kimura S, Kawabe M, Ward JM, Morishima H, Kadlubar FF, Hammons GJ, Fernandez-Salguero P, Gonzalez FJ. CYP1A2 is not the primary enzyme responsible for 4-aminobiphenyl-induced hepatocarcinogenesis in mice. Carcinogenesis 1999; 20:1825-30. [PMID: 10469630 DOI: 10.1093/carcin/20.9.1825] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
4-Aminobiphenyl (4-ABP), a potent carcinogen in rodents (liver cancer) and human (bladder cancer), is found as an environmental contaminant and in tobacco smoke. Hemoglobin adducts and lung DNA adducts of 4-ABP are found in tobacco smokers. In vitro metabolism studies with human and rat liver microsomes have shown that CYP1A2 is primarily responsible for catalyzing N-hydroxylation, the initial step in the metabolic activation of 4-ABP. To determine whether this P450 is a rate limiting pathway for hepatocarcinogenesis, CYP1A2-null mice were analyzed at 16 months of age and were compared with wild-type mice in their response to 4-ABP using the neonatal mouse bioassay and two different doses of the carcinogen. Overall differences in incidences of hepatocellular adenoma, carcinoma and preneoplastic foci were not significant between either genotypes or 4-ABP doses used, whereas small, but significant, differences were found for specific types of foci. These results suggest that while CYP1A2 levels may not be rate limiting for 4-ABP metabolism to produce tumors and foci, it may modulate the induction process of some types of liver foci in either a positive or negative manner. In vitro studies using CYP1A2-null and wild-type mouse liver microsomes revealed that CYP1A2 is not the sole P450 required for 4-ABP N-hydroxylation and that another, yet to be identified, P450 is likely to be involved.
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MESH Headings
- Adenoma/chemically induced
- Adenoma/enzymology
- Aminobiphenyl Compounds/pharmacokinetics
- Aminobiphenyl Compounds/toxicity
- Animals
- Animals, Newborn
- Biotransformation
- Carcinogens, Environmental/pharmacokinetics
- Carcinogens, Environmental/toxicity
- Carcinoma/chemically induced
- Carcinoma/enzymology
- Crosses, Genetic
- Cytochrome P-450 CYP1A2/deficiency
- Cytochrome P-450 CYP1A2/genetics
- Cytochrome P-450 CYP1A2/physiology
- Female
- Humans
- Hydroxylation
- Liver/pathology
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/enzymology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Microsomes, Liver/enzymology
- Organ Size/drug effects
- Precancerous Conditions/chemically induced
- Precancerous Conditions/enzymology
- Rats
- Receptors, Aryl Hydrocarbon/deficiency
- Receptors, Aryl Hydrocarbon/genetics
- Species Specificity
- Stomach/enzymology
- Stomach/pathology
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Affiliation(s)
- S Kimura
- Laboratory of Metabolism, National Cancer Institute, Bethesda, MD 20892, USA.
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37
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Hagiwara A, Boonyaphiphat P, Tanaka H, Kawabe M, Tamano S, Kaneko H, Matsui M, Hirose M, Ito N, Shirai T. Organ-dependent modifying effects of caffeine, and two naturally occurring antioxidants alpha-tocopherol and n-tritriacontane-16,18-dione, on 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)-induced mammary and colonic carcinogenesis in female F344 rats. Jpn J Cancer Res 1999; 90:399-405. [PMID: 10363577 PMCID: PMC5926085 DOI: 10.1111/j.1349-7006.1999.tb00761.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Modifying effects of caffeine, alpha-tocopherol, and n-tritriacontane-16,18-dione (TTAD) on 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)-induced mammary and colonic carcinogenesis were investigated in female F344 rats. Groups of 20 rats, 6 weeks old, were given 0.02% PhIP (in diet) alone, or together with 0.1% caffeine (in drinking water), 0.5% alpha-tocopherol (in diet) or 0.1% TTAD (in diet) for up to 54 weeks. Groups of 10 females receiving basal diet or one of the test chemicals without PhIP supplementation were also maintained. The final combined incidences (adenomas plus adenocarcinomas) and multiplicity (No./rat) of mammary adenomas and adenocarcinomas were significantly lowered in the PhIP plus caffeine group (10%, 0.10) as compared to the PhIP alone value (40%, (1.50). Incidences of mammary tumors in the PhIP plus alpha-tocopherol or TTAD groups tended to be decreased while their multiplicities were significantly lowered. With regard to colon tumor development, on the other hand, rats given PhIP plus caffeine exhibited an elevated incidence (75% versus 15% in the control), whereas alpha-tocopherol and TTAD had no effect. Surprisingly, metabolic activation of PhIP was inhibited by addition of caffeine in an in vitro assay. The results indicate that caffeine exerts a potent chemopreventive action against PhIP-induced mammary carcinogenesis, but acts as a co-carcinogen for PhIP-induced colonic carcinogenesis.
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Affiliation(s)
- A Hagiwara
- Daiyu-kai Institute of Medical Science, Ichinomiya.
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38
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Abstract
We report a patient--a 42-year-old man--who had suffered from recurrent duodenal ulcer for about 20 years. Successful curative therapy for Helicobacter pylori infection was performed for 2 weeks with new triple omeprazole, anoxicillin, clarithromycin (OAC) treatment in October 1995, and cure of the infection was repeatedly confirmed by histology, culture, and the 13C urea breath test. One month after the curative therapy, recurrence of a small duodenal ulcer was observed and in February another duodenal ulcer and reflux esophagitis occurred, with severe symptoms, despite the continuous administration of ranitidine. None of the examinations to reconfirm cure of the infection revealed the presence of H. pylori. As the patient experienced continual psychological stress and smoked more frequently during the recurrent episode and had not used nonsteroidal anti-inflammatory drugs, stress and smoking appeared to play important roles in the relapse of duodenal ulcer in this patient after cure of H. pylori infection.
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Affiliation(s)
- H Miwa
- Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
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39
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Anzai T, Kaneko T, Kawabe M, Iijima T, Kato M, Yoshida I, Nakamura M, Saito K. [Myocardial protection evaluated by enzymic levels: a comparison of surface induced deep hypothermia combined with cardiopulmonary bypass and cardiopulmonary bypass with cardioplegia]. Rinsho Kyobu Geka 1998; 5:168-72. [PMID: 9422999] [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: 02/05/2023]
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40
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Tanaka H, Hirose M, Kawabe M, Sano M, Takesada Y, Hagiwara A, Shirai T. Post-initiation inhibitory effects of green tea catechins on 7,12-dimethylbenz[a]anthracene-induced mammary gland carcinogenesis in female Sprague-Dawley rats. Cancer Lett 1997; 116:47-52. [PMID: 9177457 DOI: 10.1016/s0304-3835(97)04749-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The dose-dependence of green tea catechin (GTC) effects on 7,12-dimethylbenz[a]anthracene (DMBA)-induced mammary gland carcinogenesis were investigated in female Sprague-Dawley rats. Groups of 20 6-week-old rats were treated with dietary 1, 0.1 or 0.01% GTC for 2 weeks and then basal diet alone for 35 weeks. At the end of week 1, they received a 25 mg/kg body weight intragastric dose of DMBA. Further groups of 20 7-week-old rats each were given an intragastric dose of 25 mg/kg body weight DMBA, and starting 1 week after DMBA treatment they were placed on diet containing 1, 0.1 or 0.01% GTC or basal diet alone for 35 weeks. Control rats were given 1% GTC or basal diet alone. The final incidences and multiplicities of mammary tumors were not significantly different between the groups treated with GTC at the same time as DMBA, compared to the DMBA alone control group. On the other hand, the final multiplicities of mammary tumors in groups treated with 1% GTC (P < 0.05) or 0.01% GTC (P < 0.01), but not 0.1% GTC, after DMBA treatment were significantly decreased as compared to the control value. These results indicate that whereas GTC may inhibit mammary carcinogenesis in the post-initiation stage, the effect is weak and not dose-dependent.
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Affiliation(s)
- H Tanaka
- First Department of Pathology, Nagoya City University Medical School, Mizuho-ku, Japan
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41
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Miwa H, Murai T, Ohkura R, Kawabe M, Tanaka H, Ogihara T, Watanabe S, Sato N. Effect of fasting subjects' posture on 13C-urea breath test for detection of Helicobacter pylori infection. Helicobacter 1997; 2:82-5. [PMID: 9432333 DOI: 10.1111/j.1523-5378.1997.tb00063.x] [Citation(s) in RCA: 18] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Although many factors that may affect the 13C-urea value have been verified, no literature is available regarding the effect of the posture of the patient on the shape of the delta 13C excretion curve. In an effort to contribute to the development of a simple and standard procedure for the 13C-urea breath test, we investigated whether either the posture of the patient during the procedure or the mouthwash after dosing affects the shape of the delta 13C excretion curve. MATERIALS AND METHODS Seventy-two Helicobacter pylori-infected subjects were divided into four groups according to the position during procedure and the mouthwash after dosing: group A, in the supine position with mouthwash; group B, in the sitting position with mouthwash; group C, changed position by rolling with mouthwash; and group D, changed position (as did group C) without mouthwash. Absolute values of delta 13C at each sampling point were compared in the four groups. RESULTS delta 13C values in group A gradually increased until the 15-minute point; those in group B were almost stable from 5 to 30 minutes, and those in group C peaked at the 5-minute point, then decreased until 30 minutes, the values becoming similar at the 20-minute point. Significant differences were seen between groups A, B, C, and D at the 5- and 10-minute points. CONCLUSION These results suggest that posture and mouthwash affect delta 13C value at the 5- and 10-minute points. Sampling at 20 (maybe 15 or 30) minutes for fasting patients in a sitting position is considered to be appropriate for detection of H. pylori infection in a standard two-sampling-point 13C-urea breath test.
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Affiliation(s)
- H Miwa
- Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
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42
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Ozaki M, Shibata MA, Takahashi S, Orita SI, Kawabe M, Shirai T. Lack of involvement of p53 gene mutations in N-methyl-N-nitrosourea-induced bladder tumor progression in N-butyl-N-(4-hydroxybutyl)nitrosamine-treated rats and no suppression by indomethacin. Cancer Lett 1997; 115:249-55. [PMID: 9149132 DOI: 10.1016/s0304-3835(97)04743-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The relevance of p53 mutations to rat bladder cancer progression induced by a single injection of N-methyl-N-nitrosourea (MNU) and the chemopreventive effects of indomethacin (IM) were investigated in male F344 rats, initially given N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN) at a dose of 500 ppm in the drinking water for 10 weeks. The animals were subsequently treated with a single intraperitoneal injection of MNU at a dose of 50 mg/kg b.w. at week 20. A subgroup was then given IM dissolved in the drinking water at a concentration of 20 ppm for 20 weeks. The experiment was terminated at week 40 when transitional cell carcinomas (TCC) were observed in all animals given BBN, regardless of the administration of MNU and/or IM (incidences ranged from 80 to 100%). The extent of invasion was significantly greater with the additional MNU treatment but no inhibitory effects of IM were noted. A low frequency of p53 mutations was detected without relation to the extent of tumor invasion. Thus, only two mutations were found, one in a Ta and the other in a T1 carcinoma. The present study thus demonstrated that p53 mutations are not involved in MNU-induced progression in rat urinary bladder cancers, suggesting that they are not critical for malignancy.
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Affiliation(s)
- M Ozaki
- First Department of Pathology, Nagoya City University, Medical School, Mizuho-ku, Nagoya, Japan
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43
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Kawabe M, Shibata MA, Sano M, Takesada Y, Tamano S, Ito N, Shirai T. Decrease of prostaglandin E2 and 5-bromo-2'-deoxyuridine labeling but not prostate tumor development by indomethacin treatment of rats given 3,2'-dimethyl-4-aminobiphenyl and testosterone propionate. Jpn J Cancer Res 1997; 88:350-5. [PMID: 9197525 PMCID: PMC5921433 DOI: 10.1111/j.1349-7006.1997.tb00388.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The modifying effects of indomethacin (IM) on rat prostate carcinogenesis induced by 3,2'-dimethyl-4-aminobiphenyl (DMAB) were investigated. F344 rats were given 50 mg/kg body weight of DMAB at 2-week intervals for 20 weeks and then received IM at a dose of 20 ppm in the drinking water for 37 weeks. Separate groups additionally received testosterone propionate (TP) in Silastic tubes throughout the experiment. DMAB alone induced carcinomas in situ in the ventral lobe and in combination with TP caused invasive carcinomas of the dorso-lateral and anterior lobes and seminal vesicles. No clear suppression by IM of development of in situ carcinomas or invasive carcinomas was observed. In a short-term satellite experiment, it was revealed that prostaglandin E2 (PGE2) levels in the dorso-lateral prostate and seminal vesicles, but not the ventral prostate, were significantly reduced by IM and that TP itself also suppressed PGE2 levels. The 5-bromo-2'-deoxyuridine labeling index in the ventral prostate was significantly decreased by IM administration. These results indicate that while IM can efficiently suppress tissue PGE2 levels, it does not inhibit tumor development in the prostate or seminal vesicles of rats in the present model.
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Affiliation(s)
- M Kawabe
- First Department of Pathology, Nagoya City University Medical School, Nagoya
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44
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Miyata E, Kawabe M, Sano M, Takesada Y, Takahashi S, Shirai T. Effects of tamoxifen, an antiestrogen, on rat prostate carcinogenesis by 3,2'-dimethyl-4-aminobiphenyl and testosterone do not support an estrogen role in testosterone promotion. Prostate 1997; 31:9-13. [PMID: 9108880 DOI: 10.1002/(sici)1097-0045(19970401)31:1<9::aid-pros2>3.0.co;2-k] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Our previous data suggest that estrogen plays an important role in rat prostate carcinogenesis, particularly in promotion by testosterone. Therefore, in the present experiment, effects of an antiestrogen, tamoxifen (TAM), were investigated. METHODS Male F344 rats initially received 3,2'-dimethyl-4-aminobiphenyl (DMAB) at 50 mg/kg bw every 2 weeks for 20 weeks and then TAM in Silastic tubes was subcutaneously given alone or together with testosterone propionate (TP) for 40 weeks. RESULTS TAM significantly suppressed prostate weights, suggesting an estrogenic action, but the development of preneoplastic and/or neoplastic lesions of the prostate or seminal vesicles in rats given DMAB alone or DMAB and TP was not altered. TAM reversed the suppression of development of ventral atypical hyperplasias by TP. CONCLUSIONS These findings suggest that estrogen, which is derived from testosterone by the action of aromatase, is not involved in the strong promotion by TP of DMAB prostate carcinogenesis.
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Affiliation(s)
- E Miyata
- First Department of Pathology, Nagoya City University Medical School, Japan
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45
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Tanaka H, Takesada Y, Shibata MA, Kawabe M, Sano M, Tamano S, Sugimoto H, Nakamura T, Hagiwara A. Lack of tumor promoting effects of KCB-1, a recombinant human basic fibroblast growth factor, on two-stage skin carcinogenesis in female CD-1 (ICR) mice. Cancer Lett 1996; 105:195-202. [PMID: 8697444 DOI: 10.1016/0304-3835(96)04280-2] [Citation(s) in RCA: 7] [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: 02/01/2023]
Abstract
Skin tumor promoting and co-promoting potentials of KCB-1, a recombinant human basic fibroblast growth factor, were investigated in a two-stage skin carcinogenesis model using female ICR mice. Animals were allocated to either normal (non-injured) or injured skin groups, and given a single topical application of dimethylbenz[alpha]anthracene (DMBA) at 100 micrograms/mouse to fur-clipped back skin. One week after the DMBA initiation step, mice were injected with KCB-1 (0.4, 4.0 and 40 micrograms/mouse, s.c.) and/or 12-O-tetradecanoylphorbol-13-acetate (TPA) at 4.0 micrograms/mouse twice a week until the termination at week 20. The treatment with KCB-1 was not associated with any increases of papillomas and hyperplasias in either the normal or the wounded skin cases. High incidences and multiplicities of skin papillomas and hyperplasias developed in TPA-treated groups. The positive control TPA promotion was not influenced by the KCB-1 treatment in the present initiation/promotion protocol. Thus, KCB-1 exerted no tumor promoting effects on mouse skin two-stage carcinogenesis, and also no amplification activity for the established skin tumor promoter TPA.
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Affiliation(s)
- H Tanaka
- Daiyu-Kai Institute of Medical Science, Aichi, Japan
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46
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Kawabe M, Takesada Y, Tamano S, Hagiwara A, Ito N, Shirai T. Subchronic toxicity study of L-isoleucine in F344 rats. J Toxicol Environ Health 1996; 47:499-508. [PMID: 8614019 DOI: 10.1080/009841096161645] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A subchronic toxicity study with L-isoleucine was conducted using F344 rats. Groups of 10 rats of each sex were given diet containing 0, 1.25, 2.5, 5.0, or 8.0% L-isoleucine for 13 wk. No treatment-related effects were observed in terms of body weight change, food consumption or hematology. In both sexes given 8.0% L-isoleucine, increased or a tendency for increased urine volume and relative kidney weights were observed. Furthermore, the high-dose L-isoleucine treatment brought about an elevation of urinary pH and variations in serum electrolytes. However, histopathological alterations related to these changes were not observed in any organs of either sex. In conclusion, the present study demonstrated that L-isoleucine possessed minimal toxicity at dietary levels of 5.0% and 8.0%, while it did not exert any adverse affects at a dietary level of 2.5% or less.
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Affiliation(s)
- M Kawabe
- First Department of Pathology, Nagoya City University Medical School, Nagoya, Japan
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47
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Ogawa K, Imaida K, Masui T, Kawabe M, Hasegawa R, Kato K, Ito N, Shirai T. Chemically induced lung and forestomach neoplasias in transgenic mice carry mutant forms of the human c-Ha-ras transgene. Carcinogenesis 1996; 17:341-5. [PMID: 8625461 DOI: 10.1093/carcin/17.2.341] [Citation(s) in RCA: 30] [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] [Indexed: 01/31/2023] Open
Abstract
Susceptibility to lung carcinogens and genetic changes in neoplastic lesions were investigated in transgenic mice carrying a human hybrid c-Ha-ras gene, encoding a prototype p21 gene product. Nine-week-old male and female transgenic mice and non-transgenic littermates were injected i.p. with 6-nitrochrysene (6NC) three times biweekly or administered urethane in their drinking water for 3 weeks. Control mice were given dimethylsulfoxide (DMSO), the solvent for 6NC, alone. The incidences of lung adenocarcinomas were four out of seven female (57%) transgenic mice treated with 6NC and three out of three males (100%) and three out of three females (100%) receiving urethane. No adenocarcinomas were observed in control animals or non-transgenic mice. Adenomas developed in all treated groups, but the incidence and multiplicity were higher in transgenic animals than in their non-transgenic counterparts. In the 6NC-treated group, forestomach papillomas and squamous cell carcinomas were also observed in both male (25 and 50%) and female (56 and 33%) transgenic mice. PCR-SSCP and DNA sequence analysis of these induced lesions revealed point mutations at codon 61 of transgenic human c-Has-ras, from CAG (Gln) to CTG (Leu) or CAG (Gln) to AAG (Lyn) in lung hyperplasias (two out of three), an adenoma (one out of two), adenocarcinomas (five out of seven) and forestomach squamous cell carcinomas (four out of five). Mutations were not observed in forestomach papillomas. No changes in mouse Ha-ras or Ki-ras were found in any lesions. Furthermore, p21 overexpression was not evident in lung or forestomach tumors on immunohistochemical analysis. These findings indicate a high sensitivity to lung carcinogens in transgenic mice carrying the human c-Ha-ras gene and that this might be effected by mutational activation.
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Affiliation(s)
- K Ogawa
- Department of Pathology, Nagoya City University Medical School, Japan
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48
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Abstract
Monosodium L-glutamate (MSG) was administered to groups of 50 male and 50 female Fischer 344 rats in the diet at levels of 0, 0.6, 1.25, 2.5 and 5.0% for a 2-yr period. Survival of dosed and control rats of both sexes was comparable, although animals receiving 5.0% MSG showed a trend towards (or significant) growth retardation. Urinary biochemistry values indicated increased pH and Na+ levels and decreased K+ in rats of both sexes given 2.5 or 5.0%. However, no significant increases in proliferative or neoplastic lesion development in the urinary tract were observed in any MSG-treated animals. In addition, occurrences of neoplastic lesions in other organs did not differ between treated and control groups. The present study thus did not demonstrate any long-term carcinogenic effect of MSG administered to rats at levels up to 5.0% in the diet.
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Affiliation(s)
- M A Shibata
- First Department of Pathology, Nagoya City University Medical School, Japan
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49
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Kawabe M, Takaba K, Yoshida Y, Hirose M. Effects of combined treatment with phenolic compounds and sodium nitrite on two-stage carcinogenesis and cell proliferation in the rat stomach. Jpn J Cancer Res 1994; 85:17-25. [PMID: 8106288 PMCID: PMC5919334 DOI: 10.1111/j.1349-7006.1994.tb02881.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The effects of combined treatment with NaNO2 and phenolic compounds on N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) stomach carcinogenesis were investigated in F344 rats. In the first experiment, groups of 15-20 male rats were treated with an intragastric dose of 150 mg/kg body weight of MNNG, and starting 1 wk later, were given 2.0% butylated hydroxyanisole, 0.8% catechol, 2.0% 3-methoxycatechol or basal diet either alone or in combination with 0.2% NaNO2 in the drinking water until they were killed at week 52. All three antioxidants significantly enhanced forestomach carcinogenesis without any effect of additional NaNO2 treatment. However, in the absence of MNNG pretreatment, the grade of forestomach hyperplasia in the catechol and 3-methoxycatechol groups was significantly increased by the combined treatment with NaNO2. In a second experiment, the combined effects of various phenolic compounds and NaNO2 on cell proliferation in the upper digestive tract were examined. Groups of 5 rats were given one of 24 phenolic compounds or basal diet either alone or in combination with 0.3% NaNO2 for 4 weeks and then killed. Particularly strong enhancing effects in terms of thickness of the forestomach mucosa were seen with t-butylhydroquinone (TBHQ), catechol, gallic acid, 1,2,4-benzenetriol, dl-3-(3,4-dihydroxyphenyl)-alanine and hydroquinone in combination with NaNO2. In the glandular stomach, similar enhancing effects were evident in 11 cases, and in the esophagus with phenol, TBHQ and gallic acid. These results demonstrate that NaNO2 can augment cell proliferation induced in the stomach epithelium by various phenolic compounds.
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Affiliation(s)
- M Kawabe
- First Department of Pathology, Nagoya City University Medical School
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Aoyama T, Ito T, Kato T, Suzuki T, Shibata H, Kawabe M, Hara K, Terashi A. [Basic study of bone mineral density in os calcis by single energy X-ray absorptiometry]. Nihon Igaku Hoshasen Gakkai Zasshi 1993; 53:1188-94. [PMID: 8255749] [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: 01/29/2023]
Abstract
We studied bone mineral density (BMD) in the os calcis by means of single energy X-ray absorptiometry (SXA), and BMD in the third lumbar spine by means of dual energy X-ray absorptiometry (DXA), results were as follows. (1) The doses absorbed in SXA at the exposure site and the opposite site were measured by thermoluminescent dosimetry. The dose absorbed in SXA may be lower than that in DXA. (2) The BMD of the os calcis was measured in 30 female volunteers by SXA and that of the third lumbar spine by DXA, and age, weight, height, and consequences of physical exertion were investigated. BMD as determined by SXA was significantly correlated with that determined by DXA (r = 0.65). BMD as determined by SXA and DXA tended to decrease with age, to increase with height and weight, and to be significantly higher in those who made some physical exertion. In conclusion, SXA may be a useful method for the measurement of BMD.
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Affiliation(s)
- T Aoyama
- Department of Radiology, Nippon Medical School
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