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Abstract
Generation of homogeneous isotropic turbulence was attempted using an innovative "multifan wind tunnel" with 99 fans installed. The driving method used is based on a principle that the shear layers generated between outflows from the adjacent ducts lead to turbulent flow downstream. First, a signal composed of two frequency components is set, and then it is fed to all the fans for three kinds of arrangements of phases. Here, parameter N is introduced as the number of phases used for the 99 fans, which represents a variety of emanated shear layers. Furthermore, S is introduced as a measure of shear magnitude at the inlet of the test section. Relative importance of the initial conditions (N and S) in the development of turbulence was investigated. To estimate the contribution from naturally induced turbulence, we numerically decomposed the resulting velocity fluctuations into the periodic and nonperiodic component. Energy spectra for three values of N were calculated using nonperiodic data. The inertial subrange of a gradient of -5/3 widens with increasing N. The value S is the largest for N=2, but the turbulence intensity of the nonperiodic component is the largest for N=99. Hence, it might be suggested that the shear magnitude at the inlet of the test section is not as important as the variety of shear layers for effective generation of high-Reynolds-number turbulence.
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Affiliation(s)
- K Takamure
- Department of Mechanical Science and Engineering, Nagoya University, Nagoya, Japan
| | - S Ozono
- Department of Mechanical Design System Engineering, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, Japan
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Sakamoto S, Hashizume N, Fukahori S, Ishii S, Saikusa N, Yoshida M, Masui D, Higashidate N, Tsuruhisa S, Ozono S, Tanigawa M, Naito Y, Tanaka Y, Yagi M. A large retroperitoneal lipoblastoma: A case report and literature review. Medicine (Baltimore) 2018; 97:e12711. [PMID: 30290672 PMCID: PMC6200453 DOI: 10.1097/md.0000000000012711] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Lipoblastoma is a rare benign soft tissue tumor that occurs most commonly in infants and children. However, retroperitoneal lipoblastomas are rare, occurring in <5% of cases. We report a case of large retroperitoneal lipoblastoma and the largest collection of known retroperitoneal lipoblastomas in children in the literature. CASE PRESENTATION A 3-year-old girl presented with left abdominal mass. Magnetic resonance imaging (MRI) revealed a soft tissue mass measuring 12 × 8 × 6 cm in the retroperitoneal region. The mass had a clearly defined margin and a reticular pattern with an interposing fat component. Based on these findings, the mass was suspected to be a soft-tissue tumor, most likely lipoblastoma.Laparotomy with resection of the retroperitoneal mass was performed. The tumor was easily dissected from the retroperitoneal space without injury to surrounding structure.A histopathological examination demonstrated the mature proliferation of adipocytes and spindle-shaped cells separated by fibrovascular septa accompanied by myxoid changes. The cells were separated into lobules by septa, and areas of immature adipocytes showing a signet-ring or multivacuolar appearance were present at the periphery. Histopathological diagnosis was lipoblastoma. Follow-up at 6 months revealed no evidence of recurrence. CONCLUSION Retroperitoneal lipoblastoma is rare and tends to be large in size when diagnosed at presentation. Complete resection should not be delayed, as impingement on the surrounding structures is imminent.
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Affiliation(s)
- Saki Sakamoto
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Naoki Hashizume
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Suguru Fukahori
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Shinji Ishii
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Nobuyuki Saikusa
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Motomu Yoshida
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Daisuke Masui
- Department of Pediatric Surgery, Kurume University School of Medicine
| | | | - Shiori Tsuruhisa
- Department of Pediatric Surgery, Kurume University School of Medicine
| | - Shuich Ozono
- Department of Pediatrics and Child Health, Kurume University School of Medicine
| | | | - Yoshiki Naito
- Departments of Pathology, Kurume University School of Medicine
| | - Yoshiaki Tanaka
- Department of Pediatric Surgery, Kurume University School of Medicine
- Division of Medical Safety Management, Kurume University Hospital, Kurume, Fukuoka, Japan
| | - Minoru Yagi
- Department of Pediatric Surgery, Kurume University School of Medicine
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Abstract
Abstract:We evaluated the respiratory modulation of heart rate, i.e., respiratory sinus arrhythmia (RSA), with respect to respiratory phase derived from an analytic signal from the lung volume curve, during spontaneous breathing and paced breathing with different patterns. The magnitudes and waveforms of RSA in the phase domain were similar regardless of breathing pattern, even including spontaneous breathing. An examination of the occurrence of heart beats with respect to the respiratory phase revealed that synchronized patterns recently reported in the literature (Nature 392: 239, 1998) were observed during paced breathing with breath holding periods whereby the respiratory phase advanced more slowly. It was concluded that the phase domain approach might be useful in extracting RSA during spontaneous breathing and for elucidating detailed mechanisms for RSA. However, the use of this technique for studies investigating cardio-respiratory coupling should be approached cautiously, as the results may be influenced by breathing patterns.
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Miyake H, Ozono S, Fujisawa M. Prognostic significance of early tumor shrinkage under second-line targeted therapy for metastatic renal cell carcinoma: a retrospective multiinstitutional study in Japan. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw373.39] [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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Inokuchi J, Kuroiwa K, Naito S, Kakehi Y, Sugimoto M, Tanikawa T, Fujimoto H, Gotoh M, Masumori N, Ogawa O, Etoh M, Ohyama C, Yamaguchi A, Matsuyama H, Ichikawa T, Asano T, Takenaka A, Fujimoto K, Yamaguchi R, Habuchi T, Hashine K, Arai Y, Nagaoka A, Nishiyama H, Shinohara N, Niwakawa M, Egawa S, Ozono S, Kawano Y, Ishizuka O, Nishimura K, Tochigi T, Sugimura Y, Mizusawa J, Eba J. 801 The impact of ureteral ligation on clinical outcome during radical nephroureterectomy for upper urinary tract urothelial carcinoma: Multi-institutional case series study JCOG1110A. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/s1569-9056(16)60803-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Naito S, Sakai H, Hashine K, Tomita Y, Shinohara N, Fujisawa M, Eto M, Ozono S, Akaza H. Phase I/II study of S-1 in combination with sorafenib for metastatic renal cell carcinoma. Ann Oncol 2015; 26:1871-1876. [PMID: 26117830 DOI: 10.1093/annonc/mdv280] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 06/20/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The potential of S-1 for the treatment of metastatic renal cell carcinoma (mRCC) has been shown in two phase II studies. We aimed to assess the safety, tolerance, pharmacokinetics and clinical activity of S-1 combined with sorafenib in patients with mRCC. PATIENTS AND METHODS In this multicenter, single-arm, open-label, phase I/II study of S-1 plus sorafenib, we recruited patients with clear-cell or papillary renal cell carcinoma who had received a maximum of one prior cytokine-based regimen. The phase I primary end points were the maximum tolerated dose (MTD) and recommended dose (RD). S-1 was administered orally at 60, 80, 100 or 120 mg/day on days 1-28 of a 42-day cycle in combination with sorafenib (400 or 800 mg/day), given daily with dose adjustment. In phase II, the primary end point was to assess the overall response rate (ORR) at the RD. RESULTS Nine patients were enrolled into phase I and 21 (including 6 patients who received the RD in the phase I portion) were enrolled into phase II. In the phase I portion, the MTD could not be determined, and the RD was defined as S-1 80 mg/m(2)/day on days 1-28 + sorafenib 800 mg/day on days 1-42. In the phase II portion, 21 patients were fully assessable for efficacy and safety. The confirmed ORR was 52% [95% confidence interval (CI) 29.8-74.3], including one complete response (5%) and 10 partial responses (48%). The median progression-free survival was 9.9 (95% CI 6.5-17.1) months. The most frequently reported treatment-related adverse event for all grades was hand-foot skin reaction (100%). The major reasons for dose reduction were hand-foot skin reaction (38%) and rash (14%). CONCLUSION Combination therapy with S-1 plus sorafenib is effective and tolerable for patients with mRCC. However, skin events management is important in S-1 plus sorafenib combination therapy.
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Affiliation(s)
- S Naito
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
| | - H Sakai
- Department of Nephro-Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki
| | - K Hashine
- Department of Urology, National Hospital Organization Shikoku Cancer Center, Matsuyama
| | - Y Tomita
- Department of Urology, Yamagata University Faculty of Medicine, Yamagata
| | - N Shinohara
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo
| | - M Fujisawa
- Department of Urology, Kobe University School of Medicine, Kobe
| | - M Eto
- Department of Urology, Faculty of Life Sciences, Kumamoto University, Kumamoto
| | - S Ozono
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu
| | - H Akaza
- Department of Strategic Investigation on Comprehensive Cancer Network, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
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Takayama T, Takaoka N, Nagata M, Johnin K, Okada Y, Tanaka S, Kawamura M, Inokuchi T, Ohse M, Kuhara T, Tanioka F, Yamada H, Sugimura H, Ozono S. Ethnic differences in GRHPR mutations in patients with primary hyperoxaluria type 2. Clin Genet 2013; 86:342-8. [PMID: 24116921 DOI: 10.1111/cge.12292] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 09/23/2013] [Accepted: 09/26/2013] [Indexed: 11/30/2022]
Abstract
The objective of this study was to investigate ethnic differences in the glyoxylate reductase/hydroxypyruvate reductase (GRHPR) gene in patients with primary hyperoxaluria type 2 (PH2). GRHPR was genotyped in Japanese patients with PH2 and all GRHPR mutations described to date were reviewed in terms of geographic and ethnic association. We identified a novel mutation, a two-nucleotide deletion (c.248_249delTG) in exon 3 creating a premature 'stop' at codon 91. Also, we found that the c.864_865delTG mutation was associated with the rs35891798 single-nucleotide polymorphism. The allelic frequencies of the c.103delG, c.494G>A, c.403_404+2 delAAGT, and c.864_865delTG mutations in PH2 patients were 37.8%, 15.6%, 10.0%, and 10.0%, respectively. All patients with the c.103delG mutation were Caucasian. Patients with the c.494G>A mutation and 78% (7/9) of those with the c.403_404+2 delAAGT mutation were from the Indian subcontinent, whereas those with the c.864_865delTG mutation were Chinese or Japanese. Molecular analysis of GRHPR of four Japanese PH2 patients identified a novel mutation (c.248_249delTG in exon 3). Caucasians with PH2 should be screened for the c.103delG mutation; patients from the Indian subcontinent for c.494G>A; and patients of East Asian origin (particularly) for c.864_865delTG. The prevalence of the latter mutation in PH2 patients from East Asia was 75.0%.
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Affiliation(s)
- T Takayama
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Mino Y, Naito T, Otsuka A, Takayama T, Ozono S, Kagawa Y, Kawakami J. Cyclosporine alters correlation between free and total mycophenolic acid in kidney transplant recipients in the initial phase. J Clin Pharm Ther 2011; 36:217-24. [PMID: 21366651 DOI: 10.1111/j.1365-2710.2010.01168.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE The factors affecting the pharmacokinetics of free mycophenolic acid (MPA) and its phenolic glucuronide (MPAG) are still unclear. The aim of this study was to evaluate the influence of cyclosporine on the pharmacokinetics of free MPA and MPAG. METHODS Seventy-seven kidney transplant recipients (23 were in an initial phase and 54 in a stable phase; 41 were treated with cyclosporine and 36 with tacrolimus) were enrolled. Free and total MPA and MPAG were determined using HPLC. The correlations between free and total predose concentrations (C(0) ) of MPA or MPAG were evaluated separately in patients receiving calcineurin inhibitor medications. RESULTS AND DISCUSSION Serum concentration of albumin was lower in the initial phase than in the stable phase. A higher ratio of free MPAG C(0) to free MPA C(0) was observed in cyclosporine-treated than tacrolimus-treated kidney transplant recipients. Free MPA C(0) correlated weakly with total MPA C(0) in kidney transplant recipients treated with cyclosporine in the initial phase (ρ= 0·53, P = 0·06). WHAT IS NEW AND CONCLUSION Cyclosporine increased the ratio of free MPAG C(0) to free MPA C(0) and varied the free fraction of MPA in the hypoalbuminaemic kidney transplant recipients in the initial phase.
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Affiliation(s)
- Y Mino
- Department of Hospital Pharmacy, Hamamatsu University School of Medicine, Handayama, Higashi-ku, Hamamatsu, Japan
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Furuse H, Suzuki T, Kai F, Sugiyama T, Nagata M, Otsuka A, Takayama T, Hirano Y, Kurita Y, Mugiya S, Ozono S. UP-03.143 Analysis of Lymphadenectomy During Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Ozono S, Ueda T, Hoshi S, Yamaguchi A, Maeda H, Fukuyama Y, Ohashi Y, Tsukamoto T, Naito S, Akaza H. The efficacy and safety of degarelix, a GnRH receptor antagonist: A multicenter, randomized, maintenance dose-finding phase II study with Japanese prostate cancer patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.7_suppl.154] [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: 11/20/2022] Open
Abstract
154 Background: Degarelix, a GnRH receptor antagonist inducing rapid, profound and sustained suppression of serum testosterone levels, without testosterone surge, was evaluated in a phase II dose finding study in Japan. Methods: A total of 278 patients with adenocarcinoma of the prostate were randomized and 273 patients (any stage; median age, approx. 76 years; median testosterone, 4.46 ng/mL; median prostate-specific antigen (PSA) level, 22.8 ng/mL) received study treatment. Degarelix was administered subcutaneously at an initial dose of 240 mg followed by monthly maintenance doses of either 80 mg or 160 mg. The treatment continued for 12 months in the study. Results: The primary endpoint was the proportion of patients with testosterone suppression to castrate level of ≤0.5 ng/mL during 12 months treatment. Both dose regimens of 80 mg and 160 mg kept 94.5% and 95.2% of patients on castrate level respectively throughout the treatment period. At 3 days of treatment, approximately 99% of the patients reached the castrate level without testosterone surge. The percentage change in serum PSA reduction exceeded 76% at 4 weeks. The overall tumor response rates (proportion of patients with complete and partial responses) were from 77.4% to 90.8% across the groups. Eighteen patients (6.6%) withdrew from the study due to adverse events. The most common adverse events were injection site reactions; other adverse events included pyrexia, weight increased, hypertension and hot flush. Degarelix appeared well tolerated. Conclusions: With an initial dose of 240 mg followed by monthly maintenance doses of 80 mg or 160 mg, Degarelix resulted in a rapid profound and sustained testosterone suppression to castrate level and PSA reduction without testosterone surge for 12 months. Degarelix was well tolerated. The maintenance doses of 80 mg and 160 mg had similar efficacy and safety profiles. The study shows results similar to those from the degarelix pivotal phase III study (CS21). Assessment of risk-benefit would support the recommendation of the maintenance dose of 80 mg as a safe and effective monthly dose for the treatment of prostate cancer. [Table: see text]
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Affiliation(s)
- S. Ozono
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - T. Ueda
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - S. Hoshi
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - A. Yamaguchi
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - H. Maeda
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - Y. Fukuyama
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - Y. Ohashi
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - T. Tsukamoto
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - S. Naito
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
| | - H. Akaza
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan; Division of Urology, Chiba Cancer Center, Chiba, Japan; Yamagata Prefectural Central Hospital, Yamagata, Japan; Division of Urology, Harasanshin Hospital, Fukuoka, Japan; Development, Astellas Pharma Inc., Tokyo, Japan; Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan; Department of Urology, School of Medicine, Sapporo Medical University, Sapporo, Japan; Department of Urology, Graduate
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Watanabe T, Ozono S, Kageyama S. A Randomized Crossover Study Comparing Patient Preference for Tamsulosin and Silodosin in Patients with Lower Urinary Tract Symptoms Associated with Benign Prostatic Hyperplasia. J Int Med Res 2011. [DOI: 10.1177/147323001103900105] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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] Open
Abstract
Patient preference for benign prostatic hyperplasia (BPH) treatment with the α1-blockers, tamsulosin or silodosin, was compared using patient-reported outcomes. Japanese patients with lower urinary tract symptoms associated with BPH were randomly allocated to either the T–S group (tamsulosin 0.2 mg orally once daily for 4 weeks then silodosin 4 mg orally twice daily for 4 weeks) or the S–T group (silodosin 4 mg orally twice daily for 4 weeks then tamsulosin 0.2 mg orally once daily for 4 weeks). The primary endpoint was the preferred drug for treatment continuation at 8 weeks, determined by a patient-reported questionnaire. In total, 102 patients (mean age 70.3 years) were enrolled and 84 ( n = 42 per group) completed the study. A significant difference was observed between the proportion of patients who preferred tamsulosin (59/84 patients; 70.2%) and those who preferred silodosin (18/84 patients; 21.4%). A major reason for preference of either drug was ‘good efficacy’. Incidence of adverse effects was significantly lower with tamsulosin (3/91 patients; 3.3%) than with silodosin (25/88 patients; 28.4%). These findings indicate that tamsulosin is very effective for BPH, has few adverse effects and that patients want to continue to use it.
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Affiliation(s)
- T Watanabe
- Department of Urology, Maruyama Hospital, Hamamatsu, Japan
| | - S Ozono
- Department of Urology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Watanabe T, Ozono S, Kageyama S. A randomized crossover study comparing patient preference for tamsulosin and silodosin in patients with lower urinary tract symptoms associated with benign prostatic hyperplasia. J Int Med Res 2011; 39:129-142. [PMID: 21672315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Patient preference for benign prostatic hyperplasia (BPH) treatment with the α(1)-blockers, tamsulosin or silodosin, was compared using patient-reported outcomes. Japanese patients with lower urinary tract symptoms associated with BPH were randomly allocated to either the T-S group (tamsulosin 0.2 mg orally once daily for 4 weeks then silodosin 4 mg orally twice daily for 4 weeks) or the S-T group (silodosin 4 mg orally twice daily for 4 weeks then tamsulosin 0.2 mg orally once daily for 4 weeks). The primary endpoint was the preferred drug for treatment continuation at 8 weeks, determined by a patient-reported questionnaire. In total, 102 patients (mean age 70.3 years) were enrolled and 84 (n = 42 per group) completed the study. A significant difference was observed between the proportion of patients who preferred tamsulosin (59/84 patients; 70.2%) and those who preferred silodosin (18/84 patients; 21.4%). A major reason for preference of either drug was 'good efficacy'. Incidence of adverse effects was significantly lower with tamsulosin (3/91 patients; 3.3%) than with silodosin (25/88 patients; 28.4%). These findings indicate that tamsulosin is very effective for BPH, has few adverse effects and that patients want to continue to use it.
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Affiliation(s)
- T Watanabe
- Department of Urology, Maruyama Hospital, Hamamatsu, Japan.
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Kakehi Y, Hirao Y, Kim WJ, Ozono S, Masumori N, Miyanaga N, Nasu Y, Yokomizo A. Bladder Cancer Working Group Report. Jpn J Clin Oncol 2010; 40 Suppl 1:i57-64. [DOI: 10.1093/jjco/hyq128] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [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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Takayama T, Zaima N, Kyono Y, Miyazaki M, Takaoka N, Nagata M, Kai F, Sugiyama T, Setou M, Ozono S. 7140 Analysis of lipid profile of renal cell carcinoma by imaging mass spectrometry. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71473-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Kai F, Takayama T, Sugiyama T, Furuse H, Mugiya S, Ozono S. Efficacy of Adjuvant Interferon-alpha Therapy Following Curative Resection in Renal Cell Carcinoma: Before the Molecular Targeting Therapy Era. Jpn J Clin Oncol 2009; 39:310-4. [DOI: 10.1093/jjco/hyp022] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Suzuki H, Fujisawa M, Matsumoto T, Takeda M, Usui T, Matsuda T, Ozono S, Kumon H, Ichikawa T, Miki T. Alternative non-steroidal antiandrogen therapy for advanced prostate cancer that has relapsed after initial maximum androgen blockade. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.5135] [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: 11/20/2022] Open
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Okajima E, Kitagawa H, Matsuki H, Yoshie T, Kubota K, Ozono S, Hirao Y. Production of Monoclonal Antibody against Human Prostatic Carcinoma and its Immunohistochemical Properties. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1060662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hirao Y, Uemura H, Fujimoto K, Yoshida K, Ozono S, Okajima E. Non-Ischemic Enucleation of Small Renal Cell Carcinoma using Microwave Tissue Coagulator. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1055639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kinoshita Y, Matsuo M, Todoki K, Ozono S, Fukuoka S, Tsuzuki H, Nakamura M, Tomihata K, Shimamoto T, Ikada Y. Alveolar bone regeneration using absorbable poly(L-lactide-co-ɛ-caprolactone)/β-tricalcium phosphate membrane and gelatin sponge incorporating basic fibroblast growth factor. Int J Oral Maxillofac Surg 2008; 37:275-81. [DOI: 10.1016/j.ijom.2007.11.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2007] [Revised: 08/06/2007] [Accepted: 11/22/2007] [Indexed: 11/28/2022]
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20
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Takahashi Y, Kumada H, Hamada N, Haishima Y, Ozono S, Isaka M, Yasuda Y, Tochikubo K, Umemoto T. Induction of immune responses and prevention of alveolar bone loss by intranasal administration of mice with Porphyromonas gingivalis fimbriae and recombinant cholera toxin B subunit. ACTA ACUST UNITED AC 2007; 22:374-80. [PMID: 17949339 DOI: 10.1111/j.1399-302x.2007.00373.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Adult periodontitis is initiated by specific periodontal pathogens represented by Porphyromonas gingivalis; however, an effective measure for preventing the disease has not yet been established. In this study, the effectiveness of a vaccine composed of fimbriae of P. gingivalis and recombinant cholera toxin B subunit (rCTB) was evaluated using BALB/c mice. METHODS Fimbriae and rCTB were co-administered intranasally to BALB/c mice on days 0, 14, 21, and 28. On day 35, mice were sacrificed to determine immunoglobulin levels in serum, saliva, and nasal and lung extracts by enzyme-linked immunosorbent assay. The prevention effect of the vaccine on P. gingivalis-induced periodontitis in mice was evaluated by measuring alveolar bone loss. RESULTS The rCTB significantly increased serum immunoglobulin (Ig)A levels when mice were administered with a minimal amount (0.5 microg) of the fimbrial antigen. The adjuvant effect on serum IgG production was indistinct because the minimal amount of the antigen still induced a large amount of IgG. In contrast to systemic responses, a fimbria-specific secretory IgA response was strongly induced by co-administration of rCTB and 0.5 microg fimbriae; the same amount of the antigen alone scarcely induced a response. Histopathological examination revealed IgA-positive plasma cells in the nasal mucosal tissue but no observable mast cells in the area. In addition, nasal administration of the fimbrial vaccine significantly protected the mice from P. gingivalis-mediated alveolar bone loss. CONCLUSION Nasal vaccination with a combination of fimbriae and rCTB can be an effective means of preventing P. gingivalis-mediated periodontitis.
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Affiliation(s)
- Y Takahashi
- Department of Oral Microbiology, Kanagawa Dental College, Yokosuka, Kanagawa, Japan
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21
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Kinoshita Y, Matsuo M, Ozono S, Tomihata K, Shimamoto T, Ikada Y. Alveolar bone regeneration using absorbable poly(l-lactide-co-e-caprolactone)/Alpha–gamma – TCP membrane and bFGF incorporating-gelatin sponge. Int J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.ijom.2007.09.143] [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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22
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Terada H, Harada M, Ozono S, Kanayama M, Terao T. POS-01.65: Role of nitric oxide concentrations in the patients with oligozoospermia on spermatogenesis: using L-arginine loading test and supplementation therapy. Urology 2007. [DOI: 10.1016/j.urology.2007.06.855] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Ishikawa A, Tanaka M, Ohta N, Ozono S, Kitamura T. Prevention of interstitial fibrosis of renal allograft by angiotensin II blockade. Transplant Proc 2007; 38:3498-501. [PMID: 17175314 DOI: 10.1016/j.transproceed.2006.10.085] [Citation(s) in RCA: 12] [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] [Received: 07/19/2006] [Indexed: 11/20/2022]
Abstract
We previously confirmed that losartan (LOS), an angiotensin-II (A-II) receptor blocker, diminished plasminogen activator inhibitor-1 (PAI-1) in cyclosporine (CsA)-treated renal graft recipients. Because PAI-1 is known to correlate with tissue fibrosis, we speculated that LOS would have the potential to prevent renal graft interstitial fibrosis. In this study, we focused our attention on the LOS-induced histopathologic changes in renal grafts. Out of 24 CsA-treated normotensive kidney transplanted patients, 8 began to take 25 to 50 mg/day of LOS soon after kidney transplantation (group 1). Eight did so 2 years after kidney transplantation (group 2). Eight received no ARBs as a control group (group 3). PAI-1 levels were monitored every 3 months for 2 years. Renal graft biopsy was performed on all participants, with informed consent, before and 2 years after the onset of this study. The biopsy specimens were stained with periodic acid-methenamine-silver (PAM)-Masson stain for light-microscopic examination. Fibrotic areas in each biopsy specimen were measured using the LUZEX-III image analyzing system. Statistical analysis was performed using Student's t-test. When we considered the pre-value of PAI-1 in each patient as 100%, the mean percent value of PAI-1 at 2 years after the onset of this study of groups 1, 2, and 3 were 81.5 +/- 10.3%, 90.1 +/- 12.5%, and 116.8 +/- 11.9%, respectively (P < .01 groups 1 and 2 vs group 3). Light-microscopic examination revealed less remarkable renal interstitial fibrosis among LOS administered groups. A-II blockade may be a key to prevent renal graft interstitial fibrosis.
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Affiliation(s)
- A Ishikawa
- Department of Urology, Faculty of Medicine, University of Tokyo, Tokyo, Japan.
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Tomita Y, Naito S, Ozono S, Terachi T, Naito S. Validation of clinical prognostic factors for survival in 1,043 Japanese patients with metastatic renal cell carcinoma (mRCC). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.20075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
20075 Background: Increasing number of patients and death of RCC has been reported in many countries including US and Japan. For choosing optimal treatment, determining risk of patients is essential. Although several prognostic factors of mRCC has been investigated, it was based on data of Caucasian. Since racial difference in biological character of cancer has been identified in several types of cancer, we validated the relationship between reported prognostic factors and survival in patients with mRCC in Japanese patients. Methods: We reviewed the medical records of 1,043 patients who had mRCC in the period to follow up, or at the first visit examination between 1988 and 2001 of 26 center in Japan. Results: Average survival of the 708 patients who died for renal cell carcinoma was 20.84 months. On the other hand, histological high grade (> WHO grade 2), metastasis at the first visit examination, short period from the first visit to recognition of metastasis (within 12 months), brain, bone or, liver metastasis, a number of metastatic sites (>1), high performance status (ECOG PS >0), high corrected serum calcium, low hemoglobin, and high CRP were prognostic factors for survival. However, LDH were not related. The median time to death with zero risk factor was 38.5 months, but those with >3 risk factors was 10 months. The patients with >4 risk factors was 4 months. Conclusions: Almost all prognostic factors reported in previous studies mainly based on Caucasian data had same impact on Japanese patients with mRCC. However, elevation of LDH did not have relationship to prognosis. Moreover, the time to death from diagnosis of mRCC in patients with poor prognostic factors was likely shorter compared with other studies. These results suggest Japanese with mRCC might have different character from those in US or European countries though further study in patient’s and tumor characteristics is warranted. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Tomita
- Yamagata University School of Medicine, Yamagata, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Tokai University School of Medicine, Isehara, Japan; Kyushu University School of Medicine, Fukuoka, Japan
| | - S. Naito
- Yamagata University School of Medicine, Yamagata, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Tokai University School of Medicine, Isehara, Japan; Kyushu University School of Medicine, Fukuoka, Japan
| | - S. Ozono
- Yamagata University School of Medicine, Yamagata, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Tokai University School of Medicine, Isehara, Japan; Kyushu University School of Medicine, Fukuoka, Japan
| | - T. Terachi
- Yamagata University School of Medicine, Yamagata, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Tokai University School of Medicine, Isehara, Japan; Kyushu University School of Medicine, Fukuoka, Japan
| | - S. Naito
- Yamagata University School of Medicine, Yamagata, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Tokai University School of Medicine, Isehara, Japan; Kyushu University School of Medicine, Fukuoka, Japan
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Ishikawa A, Ohta N, Ozono S, Kawabe K, Kitamura T. Inhibition of Plasminogen Activator Inhibitor-1 by Angiotensin II Receptor Blockers on Cyclosporine-Treated Renal Allograft Recipients. Transplant Proc 2005; 37:994-6. [PMID: 15848601 DOI: 10.1016/j.transproceed.2004.12.226] [Citation(s) in RCA: 10] [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] [Indexed: 11/18/2022]
Abstract
INTRODUCTION We previously showed that proteinuria from a renal graft was significantly decreased by administration of losartan potassium, an angiotensin II receptor blockers (ARB). To further evaluate the mechanism, we performed another clinical study focusing on the change in plasma plasminogen activator inhibitor-1 (PAI-1) levels among cyclosporine (CyA)-treated renal allograft recipients. METHODS Among 12 hypertensive CyA-treated kidney transplant patients, four received 25 to 50 mg/day of losartan; four, 4 to 8 mg/day of candesartan cilexetil; and another four, 20 to 40 mg/day of nifedipine. Four CyA-treated kidney-transplanted patients without hypertension were selected as a control group. Informed consent was obtained from all participants. PAI-1 and serum creatinine (S-Cr) levels were monitored every 3 months for 1 year. RESULTS Considering the pretreatment of PAI-1 as 100%, the mean percent of PAI-1 at 1 year after the onset of study for losartan, candesartan, nifedipine, and control groups were 78.6 +/- 6.7%, 81.4 +/- 8.0%, 96.7 +/- 7.6%, and 110.4 +/- 9.2%, respectively. The ARB groups demonstrated significant differences from the control group (P < .01), while the nifedipine group did not. S-Cr levels among ARB-administered groups were increased slightly but temporarily. As for S-Cr levels, no significant differences were seen among the four groups. CONCLUSIONS Control of hypertension itself is important for all renal graft recipients; however, PAI-1 reduction by ARBs was thought to be a key for renal preservation. We expect that ARBs will contribute to prolonged renal allograft survival.
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Affiliation(s)
- A Ishikawa
- Department of Urology, Faculty of Medicine, the University of Tokyo, Tokyo, Japan.
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Kinouchi T, Sakamoto J, Tsukamoto T, Akaza H, Kubota Y, Ozono S, Kanetake H, Taguchi T, Kotake T. Prospective randomized trial of natural interferon-alpha (IFN) versus IFN + cimetidine in advanced renal cell carcinoma with pulmonary metastasis. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4676] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- T. Kinouchi
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - J. Sakamoto
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - T. Tsukamoto
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - H. Akaza
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - Y. Kubota
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - S. Ozono
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - H. Kanetake
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - T. Taguchi
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
| | - T. Kotake
- Osaka Medical Center for Cancer & Cardiovascular Diseases, Osaka, Japan; Kyoto University School of Medicine, Kyoto, Japan; Sapporo Medical University, Sapporo, Japan; Tsukuba University School of Medicine, Tsukuba, Japan; Yokohama City University School of Medicine, Yokohama, Japan; Hamamatsu University School of Medicine, Hamamatsu, Japan; Nagasaki University School of Medicine, Nagasaki, Japan; Japan Society for Cancer Chemotherapy, Osaka, Japan
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Okajima E, Uemura H, Ohnishi S, Tanaka M, Ohta M, Tani M, Fujimoto K, Ozono S, Okajima E, Hirao Y. Expression of cyclooxygenase-2 in primary superficial bladder cancer tissue may predict risk of its recurrence after complete transurethral resection. Aktuelle Urol 2003; 34:256-8. [PMID: 14566678 DOI: 10.1055/s-2003-41610] [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: 10/26/2022]
Abstract
A new modality is necessary to prevent recurrence of superficial bladder cancer after complete transurethral resection (TUR) because of the high recurrence rate even with current prophylaxis protocols. Prostaglandins (PGs) are known to be produced more in transitional cell carcinoma, and etiologically bladder cancer risk is negatively associated with the intake of non-steroidal anti-inflammatory drugs (NSAIDs), which inhibit cyclooxygenase (COX), the rate-limiting enzyme of the PG production. We have shown the chemopreventive effect of piroxicam, an NSAID, on the N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN)-induced rat bladder cancer model. To avoid gastrointestinal side effects of regular NSAIDs, we also showed the chemopreventive effect of nimesulide, a selective inhibitor of the second isoform of COX, COX-2, which does not affect COX-l house-keeping activity in gastrointestinal mucosa on the same model. We also observed induction of COX-2 protein in the rat bladder tumor. In this study, we screened COX-2 protein expression in primary superficial bladder cancer tissues, to elucidate if COX-2 selective inhibitors can be a candidate chemopreventive agent for bladder cancer recurrence. Five and 6 samples of superficial bladder cancer cases with and without recurrence after complete TUR were examined by immunohistochemical analysis. We found more COX-2 protein positive samples in the cases with recurrence than in cases without recurrence. Even though the number of cases examined is small, this result supports our hypothesis that COX-2 contributes to superficial bladder cancer recurrence, thus, selective COX-2 inhibitors can be a candidate chemopreventive agent for the recurrence.
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Affiliation(s)
- E Okajima
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
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Ozono S, Yamaguchi A, Mochizuki H, Kawakami T, Fujimoto K, Otani T, Yoshida K, Ichinei M, Yamashita T, Hirao Y. Caffeine test in predicting flutamide-induced hepatic injury in patients with prostate cancer. Prostate Cancer Prostatic Dis 2003; 5:128-31. [PMID: 12497002 DOI: 10.1038/sj.pcan.4500564] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2001] [Revised: 10/23/2001] [Accepted: 11/28/2001] [Indexed: 11/09/2022]
Abstract
The caffeine test measures the activity of cytochrome p450 (CYP1A2) which is a major enzyme involved in the activation of flutamide. The usefulness of this test in predicting flutamide-induced hepatic injury in patients with prostate cancer was examined. The subjects were: (1). five patients whose aspartate aminotransferase (AST) or alanine aminotransferase (ALT) level rose to 100 IU/l or higher following the start of flutamide (moderately injured group); (2). four patients whose AST and ALT levels were higher than normal but less than 100 IU/l (mildly injured group); and (3). two patients whose hepatic function remained normal (normal group). The subjects were each given canned coffee to drink. Urinary caffeine (137X), paraxanthine (17X) and 1, 7-dimethyluric acid (17U) levels were measured 4-5 h later. The metabolite ratio, (17U+17X)/137X, was calculated to serve as an indicator of CYP1A2 activity. The metabolite ratio for the moderately injured group (3.98+/-1.56) and the mildly injured group (5.55+/-1.42) were lower than that for the normal group (9.56). The results suggest that a decrease in CYP1A2 activity is involved in the onset of flutamide-induced hepatic injury, and that the caffeine test seems to provide a useful means of its prediction.
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Affiliation(s)
- S Ozono
- Department of Urology, Nara Medical University, Nara, Japan.
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Horikawa N, Chihara Y, Hayashi Y, Fujimoto K, Hosokawa Y, Otani T, Ozono S, Hirao Y. [Two cases of renal cell carcinoma that underwent radical nephrectomy subsequent to complete tumor enucleation]. Nihon Hinyokika Gakkai Zasshi 2001; 92:710-3. [PMID: 11766372 DOI: 10.5980/jpnjurol1989.92.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
We have reported the favorable therapeutic results of non-ischemic complete enucleation using a microwave tissue coagulator as a method of nephron-sparing surgery for small renal cell carcinoma (RCC). We experienced two elective cases that underwent translumbar nephrectomy subsequent to the tumor enucleation. The first case showed another RCC in a cyst, concomitant with the enucleated RCC. The second case was a pT3a spindle cell carcinoma with high-grade malignancy. We decided to nephrectomize these enucleated kidney after obtaining well-informed consent. Here we report these controversial cases and discuss about the indication and outcomes of complete tumor enucleation for small RCC.
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Affiliation(s)
- N Horikawa
- Department of Urology, Tane General Hospital
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30
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Ozono S, Hinotsu S, Tabata S, Takashima K, Fujimoto K, Okajima E, Hirao Y, Ohashi Y, Akaza H, Fukushima S. Treated natural history of superficial bladder cancer. Jpn J Clin Oncol 2001; 31:536-40. [PMID: 11773261 DOI: 10.1093/jjco/hye114] [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: 11/14/2022] Open
Abstract
BACKGROUND The present study was conducted to examine the natural history of superficial bladder cancer. METHODS One hundred and forty-four patients with superficial bladder cancer who had been treated with transurethral resection of bladder tumor (TURBt) alone were analyzed. RESULTS The non-recurrence rate was 64.8% at 36 months and 61.2% at 60 months after TURBt. When the non-recurrence rate after TURBt was analyzed by background variables, the rate differed significantly between the solitary tumor group and the multiple tumor group. The tumor recurrence hazard curves for the entire population had one high peak before 500 days and another slight peak around 1500 days after TURBt. CONCLUSIONS These results will provide basic information useful when evaluating new regimens of intravesical instillation therapy for prophylaxis of superficial bladder cancer after our complete TURBt in the Nara Uro-Oncology Research Group.
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Affiliation(s)
- S Ozono
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
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31
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Takashima K, Ozono S, Nakanou I, Ota M, Tanaka M, Tani M, Hirao K, Hirao Y, Kuwashima S, Hiasa Y. Strain variation in renal carcinogenesis by N-ethyl-N-hydroxyethylnitrosamine in F1 (Wistar-Fischer) rats. Cancer Lett 2001; 170:125-30. [PMID: 11463489 DOI: 10.1016/s0304-3835(01)00608-5] [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: 10/18/2022]
Abstract
The present study was conducted to compare the incidences of renal tumors in Wistar (W), Fischer (F) and F1 rats (WF: female Wistar rats x male Fischer rats; FW: female Fischer rats x male Wistar rats) induced by N-ethyl-N-hydroxyethylnitrosamine (EHEN). Levels of 8-OHdG in renal DNA were also investigated in Wistar and Fischer rats. After 2000 ppm of EHEN was administered orally for 2 weeks, the animals were fed basal diet until week 32. Wistar males and females demonstrated significantly higher sensitivity regarding induction of renal lesions, while both WF and FW rats had similar incidences, generally intermediate between those for the two parent strains. The formation of 8-OHdG was maximal 60-180 min after an intraperitoneal dose of 750 mg/kg to Wistar and Fischer rats, which correlates with the increase tending to the incidence of renal tumors in male and female Wistar and Fischer rats. The results suggest that EHEN induction of renal tumors is related to oxygen radical damage and that the genes in the Wistar strain responsible for the sensitivity are not inherited in a sex-dependent fashion, despite the male being more susceptible.
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Affiliation(s)
- K Takashima
- Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, Japan
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Kim SC, Fujimoto K, Matsumoto Y, Cho M, Natsume O, Uemura H, Ozono S, Hirao Y. [A case of prostate cancer with cyst formation]. Hinyokika Kiyo 2001; 47:653-6. [PMID: 11692605] [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: 02/22/2023]
Abstract
A 73-year-old man with the complaint of dysuria of 2 years' standing was admitted to our hospital for further examination of an intrapelvic cystic mass, 8.6 cm in diameter, detected incidentally by abdominal ultrasonography. The serum concentration of prostate specific antigen (PSA) was elevated to 44.9 ng/ml. Pelvic computed tomography (CT) and magnetic resonance imaging (MRI) revealed a cystic mass with an irregular thick cyst wall posterior to the urinary bladder originating from the prostate. Transrectal needle biopsy presented a moderately differentiated adenocarcinoma of the prostate. The bloody fluid of the cyst obtained by transperineal aspiration contained a significantly increased level of PSA, but no cancer cells were detected by cytological examination. Total prostatectomy was performed under the diagnosis of clinical stage C (cT3N0M0) prostate cancer. Pathological diagnosis was that cancer cells were present in the prostate tissue and had partly infiltrated the cyst wall. These results suggest that the present cyst was associated with the development of prostate cancer as a pseudocyst without an epithelial lining. The patient has remained free from the disease for over ten months. We review 56 cases of this rare condition that have been reported in Japan.
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Affiliation(s)
- S C Kim
- Department of Urology, Nara Medical University
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33
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Aoki K, Nakanou I, Takashima K, Hirao K, Hiramatsu T, Fujimoto K, Kagebayashi Y, Ozono S, Hirao Y. [A case of renal cell carcinoma producing alpha-fetoprotein]. Hinyokika Kiyo 2001; 47:477-80. [PMID: 11523131] [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: 02/21/2023]
Abstract
Renal cell carcinoma (RCC) producing alpha-fetoprotein (AFP) is a rare condition with only 11 cases reported in Japan to our knowledge. A 69-year-old man was admitted to our hospital for further examination of an incidental right renal tumor. Laboratory tests showed markedly increased serum level of AFP whereas both HBs antigen and anti-HCV antibody were negative. Computed tomography and magnetic resonance imaging imagings showed a right renal tumor but no tumor in liver, testis or lymph node. We performed right radical nephrectomy. Serum level of AFP declined within the normal range 7 weeks after nephrectomy according to its half-life curve. The tumor specimen was composed mainly of granular cells. Immunohistochemical examination of the tumor cells proved the presence of AFP in the cytoplasm. The possibility of AFP as a tumor marker of renal cell carcinoma in this case was presented.
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Affiliation(s)
- K Aoki
- Department of Urology, Hirao Hospital
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34
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Marumo K, Satomi Y, Miyao N, Hasegawa M, Tomita Y, Igarashi T, Onishi T, Nakazawa H, Fukuda M, Ozono S, Terachi T, Tsushima T, Nakamoto T, Kawamura J. The prevalence of renal cell carcinoma: a nation-wide survey in Japan in 1997. Int J Urol 2001; 8:359-65. [PMID: 11442657 DOI: 10.1046/j.1442-2042.2001.00314.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The present study was conducted to investigate the incidence of renal cell carcinoma by sex, age group and different regions in Japan. METHODS The survey was conducted from the beginning of January 1997 to the end of December 1997. A total of 1306 Institutions in all 47 prefectures throughout Japan were requested to register cases. RESULTS There were 6358 persons with renal cell carcinoma, consisting of 4372 men and 1986 women. The age-specific incidence rates showed a peak in the age group of 65-70 years in both men and women. The crude incidence rates per 100 000 population for men and women were 7.1 and 3.1, respectively, and age-standardized incidence rates per 100 000 population for men and women were 4.9 and 1.8, respectively. The incidence rates in the Hokkaido region were significantly higher than in other regions (P < 0.05), among which there was no significant difference in incidence rates. CONCLUSIONS The present study showed that the incidence rates of renal cell carcinoma in Japan were approximately the same as among Japanese in Los Angeles. The rates were, however, lower than North American and European countries, but higher than China, Central or South American countries and African countries. The reasons for the high incidence of renal cancer in the Hokkaido region are not entirely clear. Further epidemiologic research is required.
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Affiliation(s)
- K Marumo
- Department of Urology, School of Medicine, Keio University, Tokyo, Japan.
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35
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Kishino T, Fujimoto K, Hayashi Y, Momose H, Otani T, Ozono S, Hirao Y, Shiiki H, Dohi K, Maruyama H. [A case of polyarteritis nodosa presenting as a mass in scrotum]. Hinyokika Kiyo 2001; 47:211-3. [PMID: 11329967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
A 16-year-old boy with a painful tumor in the left scrotum was referred to our department. CT scans showed a low density area in the left testis, so we diagnosed a left testicular tumor and performed left inguinal orchiectomy. Histological examination revealed polyarteritis nodosa (PN) of the testis and epididymis. Systemic examination revealed no other evidence of PN. Although induration developed in the right epididymis after the operation, it resolved with steroid therapy. The patient is currently asymptomatic and is being followed at our clinic. The pathogenesis and management of this rare condition are discussed.
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Affiliation(s)
- T Kishino
- Department of Urology, Tane General Hospital
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36
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Yoshida K, Kagebayashi Y, Kitauchi T, Kimura S, Yoneda T, Ozono S, Hirao Y, Watanabe T. Effect of endothelin receptor antagonist (TAK-044) on autotransplanted perfused kidneys in dogs. Urol Int 2001; 65:148-54. [PMID: 11054033 DOI: 10.1159/000064861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Endothelin-1 (ET-1) is involved in some diseases, including renal disease. Recently, the role of ET-1 in postrenal transplantation has been demonstrated in experimental and clinical studies. A new endothelin receptor antagonist, TAK-044, blocks both, ETA and ETB receptors, and was useful in treating acute renal failure in rats. In this study, we evaluated the effect of TAK-044 on autotransplanted kidneys with 18 h of perfusion. MATERIALS AND METHODS TAK-044 was injected subcutaneously at 15 mg/kg/day for 2 weeks in one group of dogs, and blood analysis and renal function, were evaluated. A control group was given saline in the same manner as that used for the TAK-044 group. Histopathological examination and immunohistochemistry for ET-1 were performed in the two groups. RESULTS In the control group, 5 of the 7 dogs died of renal failure within 2 weeks after autotransplantation of the kidney. In the TAK-044 group, 5 of the 7 dogs survived and 2 died of renal failure within the same period. Although the histological changes in the tubules in both groups were severe due to the 18 h of perfusion, TAK-044 ameliorated these changes. Immunohistochemical staining for ET-1 was seen in tubules in the control group. CONCLUSION These findings suggest that TAK-044 effectively reduces damage in autotransplanted perfused kidneys in dogs, and may be useful in limiting damage to the kidney by acute tubular necrosis after renal transplantation in humans.
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Affiliation(s)
- K Yoshida
- Division of Hemodialysis Unit, Nara Medical University, Nara, Japan.
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37
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Ishibashi M, Yoshida K, Ozono S, Hirao Y, Takahashi K, Kawamura Y, Ohara K. Experimental study of tacrolimus immunosuppression on the mode of administration: efficacy of constant intravenous infusion avoiding C(max). Transplant Proc 2001; 33:559-60. [PMID: 11266958 DOI: 10.1016/s0041-1345(00)02142-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- M Ishibashi
- Department of Urology, Nara Medical University, Nara, Japan
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38
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Ikeda T, Ozono S, Kagebayashi Y, Hosokawa Y, Kawakami T, Otani T, Uemura H, Hirao Y. [A case of psoas cold abscess in a young tuberculosis patient]. Hinyokika Kiyo 2000; 46:619-22. [PMID: 11107531] [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: 02/18/2023]
Abstract
A 28-year-old man was referred to our hospital with a complaint of painful induration of right epididymis accompanied with right back pain and persistent low-grade fever. He was finally diagnosed with tuberculosis by sputum culture. Abdominal computed tomography (CT) revealed right psoas abscess and vertebral caries. He underwent a percutaneous drainage of the abscess followed by multidrug (streptomycin, pyrazinamide, refanpicin, isoniazide) combination therapy. Immediately after the drainage, symptoms began to improve with these therapies. However, four months later, abdominal CT showed a worsening of the abscess. Recently there is a stagnation in the decline of incidence of tuberculosis. It is still necessary to examine young people carefully bearing urogenital tuberculosis in mind. The pathogenesis and management of this rare condition are discussed.
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Affiliation(s)
- T Ikeda
- Department of Urology, Nara Medical University
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39
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Samma S, Hirao Y, Okajama E, Ozono S, Kashiwai K, Tsukamoto N, Ishikawa H. [Screening for prostatic diseases in one-day total health check-up by using prostate specific antigen, international prostate symptom score and QOL index]. Hinyokika Kiyo 2000; 46:609-13. [PMID: 11107529] [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: 02/18/2023]
Abstract
We preliminarily studied screening for prostatic diseases in one-day total health check-up by employing prostate specific antigen (PSA), international prostate symptom score (IPSS) and quality of life (QOL) index. From January 6 to March 31, 1998, a total of 390 men were included in this study, whose age ranged from 50 to 78 years with the mean of 57.5 years. The questionnaires, IPSS and QOL index, were mailed to the participants in advance. PSA (IMx: Dainapack) was measured at the end of the health check-up and the results of tests were explained on the same day. Participants who showed more than 8 points in IPSS, more than 4 points in QOL index and/or more than 4.1 ng/ml in PSA were given a referral to urologists of corresponding hospitals for further examination. A total of 116 men (29.7%) were judged to need thorough examination. Among 106 men who were referred to urologists, only 34 (32.1%) had visited the urologists by the end of July 1998. Two men (0.51% in all participants) were diagnosed with prostate cancer, 10 received some pharmacotherapy, and 2 underwent transurethral resection of prostate. The results indicate that screening for prostatic diseases in total health check-up is useful, even in an institute without staff urologists, in close association with urologists.
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Affiliation(s)
- S Samma
- Department of Urology, Nara Prefectural Nara Hospital
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40
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Ozono S, Okajima E, Yamaguchi A, Yoshikawa M, Iwai A, Moriya A, Yoshida K, Samma S, Maruyama Y, Hirao Y. A prospective randomized multicenter study of chlormadinone acetate versus flutamide in total androgen blockade for prostate cancer. Jpn J Clin Oncol 2000; 30:389-96. [PMID: 11095136 DOI: 10.1093/jjco/hyd106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND A randomized multicenter study was conducted to investigate the efficacy of total androgen blockade (TAB) for patients with previously untreated prostate cancer using the steroidal anti-androgen chlormadinone acetate (CMA) and the non-steroidal anti-androgen flutamide. We also compared the liver dysfunction in these two arms. METHODS From November 1995 to October 1997, 71 patients were registered into this study and 70 of them were eligible. RESULTS There was no significant difference in the efficacy of TAB between CMA and flutamide at 24 weeks. The testosterone and prostate-specific antigen (PSA) levels in patients administered flutamide (Group II) increased significantly 3 days after the first dose of LH-RH analog, whereas no such increase was observed in patients administered CMA (Group I), indicating that CMA prevented the flare-up. Parameters of liver function, serum GOT and GPT levels, which were normal at the baseline, became abnormal in 30.0% and 35.3%, respectively, of patients in Group II. These figures were significantly higher than the corresponding figures of 6.3% and 12.5%, respectively, in Group I. When the degree of change in each of these parameters was analyzed, both GOT and GPT levels showed a significantly greater increase in Group II than in Group I. CONCLUSION These results indicate that attention must be paid to changes in liver function during the administration of flutamide in patients with prostate cancer even if their baseline liver function is normal. It is also suggested that CMA may be better tolerated from the viewpoint of the drug effects on liver function.
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Affiliation(s)
- S Ozono
- Department of Urology, Nara Medical University, Kashihara, Japan.
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41
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Ohtani T, Hayashi Y, Kishino TE, Fujimoto K, Hirao Y, Ozono S, Okajima E. A new parameter in decision making for transurethral electroresection of benign prostate hyperplasia. Eur Urol 2000; 35:185-91. [PMID: 10072618 DOI: 10.1159/000019845] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE In this study, the clinical usefulness of transition zone (TZ) volume (TZV) measured by transrectal ultrasonography (TRUS) was investigated as a new parameter for the preoperative prediction of the treatment efficacy of transurethral resection of the prostate (TURP). METHODS Fifty-six men with symptomatic benign prostatic hyperplasia (BPH; age 68.6 +/- 9.7 years) underwent TURP and were evaluated based on ordinary BPH parameters such as the international prostatic symptom score (I-PSS), quality of life (QOL) score, peak urine flow and entire prostate volume (PV), as well as the new TZV parameters and calculation of the TZ index. Relative risks were adjusted simultaneously for potentially confounding variables by multiple logistic regression analysis after adjustment for age, QOL, I-PSS, Qmax and residual urine. RESULTS The adjusted relative risk for TURP at a TZ index of 0.1 increased to 4.5 (95% confidence interval 2.3-8.78). In general, poor responses were observed in patients with less symptomatic scores or lower values prior to operation, but there was a weak correlation between treatment outcome and preoperative scores or values of ordinary parameters. The volume parameters of BPH and PV did not predict treatment efficacy preoperatively, but TZV and the TZ index correlated with the treatment efficacy of TURP. CONCLUSION TZV and the TZ index seem to be useful new parameters in preoperative decision-making with regard to TURP.
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Affiliation(s)
- T Ohtani
- Department of Urology, Tane General Hospital, Kashihara, Nara, Japan
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42
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Mori K, Hasegawa M, Nishida M, Toma H, Fukuda M, Kubota T, Nagasue N, Yamana H, Hirakawa-YS Chung K, Ikeda T, Takasaki K, Oka M, Kameyama M, Toi M, Fujii H, Kitamura M, Murai M, Sasaki H, Ozono S, Makuuchi H, Shimada Y, Onishi Y, Aoyagi S, Mizutani K, Ogawa M, Nakao A, Kinoshita H, Tono T, Imamoto H, Nakashima Y, Manabe T. Expression levels of thymidine phosphorylase and dihydropyrimidine dehydrogenase in various human tumor tissues. Int J Oncol 2000; 17:33-8. [PMID: 10853015 DOI: 10.3892/ijo.17.1.33] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Thymidine phosphorylase (dThdPase) is the rate-limiting enzyme that metabolizes 5'-deoxy-5-fluorouridine (5'-dFUrd, doxifluridine), an intermediate metabolite of capecitabine, to the active drug 5-fluorouracil (5-FUra), while dihydropyrimidine dehydrogenase (DPD) catabolizes 5-FUra to an inactive molecule. The susceptibility of tumors to fluoropyrimidines is reported to correlate with tumor levels of these enzymes. To obtain some insight into the tumor types susceptible to fluoropyrimidine therapy, we measured expression levels of these two enzymes in various types of human cancer tissues (241 tissue samples) by the ELISA methods. DPD exists in all the cancer types studied, such as bladder, breast, cervical, colorectal, esophageal, gastric, hepatic, pancreatic, prostate, and renal cancers. Among them, the cervical, hepatic, pancreatic, esophageal, and breast cancer tissues expressed high levels of DPD (median >70 U/mg protein), while high concentrations of the dThdPase were expressed in esophageal, cervical, breast, and pancreatic cancers and hepatoma (median >150 U/mg protein). The dThdPase/DPD ratio, which was reported to correlate with the susceptibility of human cancer xenografts to capecitabine, was high in esophageal, renal, breast, colorectal, and gastric cancers (median ratio of >1.5). In any of these three parameters, the inter-patient DPD variability for each cancer type was much larger than the DPD variability among cancer types; highest/lowest ratios for dThdPase, DPD, and dThdPase/DPD were 10-321, 7-513, and 2-293, respectively. These results indicate that measurements of the three parameters, DPD, dThdPase and dThdPase/DPD, would be useful criteria for selecting cancer patients suitable for fluoropyrimidine therapy rather than for selecting cancer types.
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Affiliation(s)
- K Mori
- Cytostatics Group, Nippon Roche Research Center, Kamakura, Kanagawa, Japan
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43
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Ozono S, Hirao Y. [Usefulness and problems of antiandrogen]. Nihon Rinsho 2000; 58 Suppl:206-10. [PMID: 11022715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- S Ozono
- Department of Urology, Nara Medical University
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44
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Kotani K, Hidaka I, Yamamoto Y, Ozono S. Analysis of respiratory sinus arrhythmia with respect to respiratory phase. Methods Inf Med 2000; 39:153-6. [PMID: 10892252] [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: 02/17/2023]
Abstract
We evaluated the respiratory modulation of heart rate, i.e., respiratory sinus arrhythmia (RSA), with respect to respiratory phase derived from an analytic signal from the lung volume curve, during spontaneous breathing and paced breathing with different patterns. The magnitudes and waveforms of RSA in the phase domain were similar regardless of breathing pattern, even including spontaneous breathing. An examination of the occurrence of heart beats with respect to the respiratory phase revealed that synchronized patterns recently reported in the literature (Nature 392: 239, 1998) were observed during paced breathing with breath holding periods whereby the respiratory phase advanced more slowly. It was concluded that the phase domain approach might be useful in extracting RSA during spontaneous breathing and for elucidating detailed mechanisms for RSA. However, the use of this technique for studies investigating cardio-respiratory coupling should be approached cautiously, as the results may be influenced by breathing patterns.
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Affiliation(s)
- K Kotani
- Department of Precision Engineering, Graduate School of Engineering, University of Tokyo, Japan.
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45
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Hayashi H, Ozono S, Watanabe K, Nagatsu I, Onozuka M. Morphological aspects of the postnatal development of submandibular glands in male rats: involvement of apoptosis. J Histochem Cytochem 2000; 48:695-8. [PMID: 10769053 DOI: 10.1177/002215540004800513] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We studied the involvement of the apoptotic mechanism(s) in cell differentiation in the developing male rat submandibular gland using the TUNEL (terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick-labeling) assay in combination with light and electron microscopy. Whereas the proacinar cells were completely transformed into acinar cells within 2 weeks after birth, starting on postnatal Day 21, the terminal tubule cells formed vacuoles that disappeared by postnatal Day 35. During this period, positive TUNEL reactivity was seen in the terminal tubule cells, and electron microscopic analysis showed that certain morphological features of apoptosis, including fragmentation of nuclei and the presence of apoptotic bodies in the cytoplasm, were present in and restricted to the terminal tubule cells. These results indicate that, in addition to an autophagocytosis-mediated mechanism, apoptosis may also be involved in reducing the number of terminal tubule cells during postnatal development in the submandibular gland.
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Affiliation(s)
- H Hayashi
- Department of Oral Histology, Kanagawa Dental College, Yokosuka, Japan
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46
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Tani M, Ozono S, Takashima K, Tanaka M, Ota M, Nagayoshi J, Yoshikawa M, Hirao Y, Okajima E. [The problem of a long-term follow up in patients with renal cell carcinoma]. Nihon Hinyokika Gakkai Zasshi 2000; 91:469-72. [PMID: 10826245 DOI: 10.5980/jpnjurol1989.91.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE We investigated on a problem of long-term follow up in patients with renal cell carcinoma. PATIENTS AND METHODS A total of 287 patients with renal cell carcinoma treated in Nara Medical University and affiliated facilities from January 1980 to December 1990 were examined. And we investigated the trend of explanation to patients including 287 patients from 1991 to 1995. RESULTS Up to December 1995, there are 76 patients (26.5%) unable to be followed and 211 patients able to be followed. The former group patients were less declared cancer rather than the latter group patients. Of 76, 22 patients (28.9%) might misunderstand completely recovering from the cancer disease. For the recent 5 years, those patients who were declared cancer increased, and those patients who were explained benign disease decreased. CONCLUSION These results suggested that declaration of cancer is important for patients with renal cell carcinoma to be followed for a long-term.
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Affiliation(s)
- M Tani
- Department of Urology, Nara Medical University, Japan
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47
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Okada H, Kamidono S, Yoshioka T, Okuyama A, Ozono S, Hirao Y, Okajima E, Yamamoto K, Kishimoto T, Park Y, Kurita T. A comparative study of terazosin and tamsulosin for symptomatic benign prostatic hyperplasia in Japanese patients. BJU Int 2000; 85:676-81. [PMID: 10759664 DOI: 10.1046/j.1464-410x.2000.00608.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the efficacy and safety of an incremental-dose regimen of terazosin (1-2 mg daily) and a fixed-dose regimen of tamsulosin (0.2 mg daily), on Japanese patients with symptomatic benign prostatic hyperplasia (BPH). PATIENTS AND METHODS This multicentre, single-blind, randomized trial compared terazosin and tamsulosin over 4 weeks, in 61 patients with symptomatic BPH randomly assigned to terazosin (n = 31) or tamsulosin (n = 30). Terazosin 0.5 mg twice daily was administered for 2 weeks, followed by 1 mg twice daily for 2 weeks. Tamsulosin (0.2 mg) was administered once daily for 4 weeks. Symptoms were evaluated using the International Prostate Symptom Score (IPSS), and quality of life (QOL) was assessed subjectively before treatment, and again after 2 and 4 weeks of treatment. Objective measurements taken before and after the treatment period were the maximum (Qmax) and average (Qave) urinary flow rates, and the percentage residual urine volume. Improvement was defined as a 25% decrease from baseline in IPSS, > 1 point increase in QOL score, and > 2.5 mL/s increase in Qmax. Adverse reactions potentially related to the study drugs were recorded throughout the treatment period. RESULTS Both terazosin and tamsulosin produced statistically significant improvements in subjective and objective variables. Neither treatment affected systolic or diastolic blood pressure or pulse rate. Adverse reactions were noted in four patients (three in the terazosin group and one in the tamsulosin group). However, there was no statistically significant difference in the incidence of adverse effects between the groups. CONCLUSIONS Despite the limitations of small sample size and relatively short treatment periods, terazosin and tamsulosin were equally effective in the treatment of symptomatic BPH in Japanese patients, using relatively lower doses than those used in Western countries.
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Affiliation(s)
- H Okada
- Departments of Urology, Kobe University School of Medicine, Kobe, Japan
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48
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Onozuka M, Watanabe K, Nagasaki S, Jiang Y, Ozono S, Nishiyama K, Kawase T, Karasawa N, Nagatsu I. Impairment of spatial memory and changes in astroglial responsiveness following loss of molar teeth in aged SAMP8 mice. Behav Brain Res 2000; 108:145-55. [PMID: 10701658 DOI: 10.1016/s0166-4328(99)00145-x] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [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: 10/18/2022]
Abstract
In order to evaluate the mechanism(s) responsible for senile impairment of cognitive function as a result of reduced mastication, the effects of the loss of the molar teeth (molarless condition) on the hippocampal expression of glial fibrous acidic protein (GFAP) and on spatial memory in young adult and aged SAMP8 mice were studied using immunohistochemical and behavioral techniques. Aged molarless mice showed a significantly reduced learning ability in a water maze test compared with age-matched control mice, while there was no difference between control and molarless young adult mice. Immunohistochemical analysis showed that the molarless condition enhanced the age-dependent increase in the density and hypertrophy of GFAP-labeled astrocytes in the CA1 region of the hippocampus. These effects increased the longer the molarless condition persisted. When the extracellular K+ concentration ([K+]o) was increased from 4 to 40 mM for hippocampal slices in vitro, the mean increase in the membrane potential was about 57 mV for fine, delicate astrocytes, the most frequently observed type of GFAP-positive cell in the young adult mice, and about 44 mV for the hypertrophic astrocytes of aged mice. However, there was no significant difference in resting membrane potential between these cell types. The data suggest that an impairment of spatial memory and changes in astroglial responsiveness occur following the loss of molar teeth in aged SAMP8 mice.
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Affiliation(s)
- M Onozuka
- Department of Anatomy, Gifu University School of Medicine, Japan.
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Nakagawa S, Miki T, Akaza H, Ozono S, Okano T, Sonoda Y, Tsukamoto T, Terachi T, Naito K, Naito S, Nishiyama T, Nonomura N, Hara I, Hoshi S, Yoshida O. [High-dose chemotherapy with peripheral blood stem cell autotransplantation for patients with poor-risk testicular germ cell tumors--pilot study of the Japan Blood Cell Transplantation Study Group]. Hinyokika Kiyo 1999; 45:805-9. [PMID: 10637748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The efficacy and toxicity of a single cycle of high-dose chemotherapy with peripheral blood stem cell autotransplantation (PBSCT) in patients with poor-risk testicular germ cell tumors (GCT) enrolled in the Japan Blood Cell Transplantation Study Group was investigated. Previously untreated poor-risk testicular GCT patients were treated with BEP therapy (cisplatin, etoposide and bleomycin) with or without high-dose chemotherapy (carboplatin, etoposide and ifosphamide) followed by PBSCT. Patients were qualified for a change to high-dose chemotherapy if elevated serum tumor markers (human chorionic gonadotropin-beta, alpha-fetoprotein and lactate dehydrogenase) was observed after 3 cycles of BEP therapy. Eighteen patients were treated with BEP therapy alone and 16 with BEP and high-dose chemotherapy. At the completion of high-dose chemotherapy, all tumor markers had returned to normal in 6 patients. Among them, 1 had only teratoma found at resection and 5 had carcinoma resected. Nine patients who had persistent elevation of any tumor marker were treated with high-dose chemotherapy or another anticancer drug. Thirteen are alive (81%) and 9 (56%) are continuously disease-free at a median follow up of 11 months. The median time from PBSCT to a granulocyte count > 500/microL was 9.5 days and to a platelet count > 50,000/microL was 13 days.
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50
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Onozuka M, Watanabe K, Mirbod SM, Ozono S, Nishiyama K, Karasawa N, Nagatsu I. Reduced mastication stimulates impairment of spatial memory and degeneration of hippocampal neurons in aged SAMP8 mice. Brain Res 1999; 826:148-53. [PMID: 10216208 DOI: 10.1016/s0006-8993(99)01255-x] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.1] [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: 11/30/2022]
Abstract
The involvement of reduced mastication in senile dementia was evaluated by examining the effect of cutting off the upper molars (molarless) on spatial memory and numbers of hippocampal neurons in aged SAMP8 mice. Molarless mice showed a decrease in both learning ability in a water maze and neuron density in the hippocampal CA1 region compared with control mice. These changes increased the longer the molarless condition persisted. The data suggest a possible link between reduced mastication and hippocampal neuron loss that may be one risk factor for senile impairment of spatial memory.
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Affiliation(s)
- M Onozuka
- Department of Anatomy, 2nd Division, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu, 500-8705, Japan.
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