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Miyazawa K, Tamada Y, Tabuchi M, Kawaguchi M, Shibata M, Sato T, Okamoto K, Saito N, Goto S. Effective approach for improving a gummy smile : Upward movement of the maxillary occlusal plane using midpalatal miniscrews and a modified transpalatal arch. J Orofac Orthop 2024; 85:167-180. [PMID: 36006416 DOI: 10.1007/s00056-022-00417-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 06/19/2022] [Indexed: 10/15/2022]
Abstract
PURPOSE Correction of a gummy smile by orthodontic treatment alone has recently become feasible with the use of miniscrews. However, the optimal treatment mechanics remain unclear. Here we cephalometrically evaluated jaw and tooth displacement in cases where a gummy smile was improved using a level anchorage system (LAS). METHODS Sixteen patients underwent orthodontic treatment using an LAS consisting of a modified transpalatal arch and midpalatal miniscrews. Cephalometric pretreatment and posttreatment measurements were compared using the paired t‑test to determine significant skeletal and dental changes. The Mann-Whitney U test was used for nonparametric data. Spearman's rank correlation coefficient was used to evaluate correlations between different variables and the vertical change in prosthion position which was used to indicate the amount of gingival exposure. RESULTS The changes noted after treatment were intrusion of the maxillary first molars (P < 0.001) combined with only minor extrusion of the mandibular first molars. Suppressed extrusion of the mandibular first molars was significantly correlated with greater upward movement of the prosthion (r = 0.676, P < 0.01). Upward movement of the prosthion was also significantly correlated with intrusion of the maxillary and mandibular incisors, anterior upward movement of the maxillary occlusal plane, and an increase of the SNP angle. CONCLUSIONS Treatment involving the combined use of miniscrews and a modified transpalatal arch resulted in intrusion of the maxillary first molars and maxillary incisors and consequently elevated the maxillary occlusal plane. The results of this study suggest that intruding the maxillary occlusal plane and minimizing mandibular molar extrusion were effective to induce autorotation of the mandible and to improve a gummy smile.
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Affiliation(s)
- Ken Miyazawa
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Yuka Tamada
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Masako Tabuchi
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan.
| | - Misuzu Kawaguchi
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Momoko Shibata
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Takuma Sato
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Kyoko Okamoto
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Natsuki Saito
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
| | - Shigemi Goto
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-Dori, 464-8651, Chikusa-ku, Nagoya, Aichi, Japan
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2
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Tuan HA, Hirai S, Tamada Y, Akioka S. Preparation of silk resins by hot pressing Bombyx mori and Eri silk powders. Mater Sci Eng C Mater Biol Appl 2018; 97:431-437. [PMID: 30678929 DOI: 10.1016/j.msec.2018.12.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/16/2018] [Accepted: 12/18/2018] [Indexed: 10/27/2022]
Abstract
We investigate the mechanical properties and structure of silk resins as potential alternatives to tortoiseshell for producing eyeglass frames and various ornaments. Silk powders are obtained from Bombyx mori and Eri silk waste fibers before the degumming process. The powders are fabricated into resins via simple hot pressing under a pressure of 31.2 MPa at temperatures in the range 150-180 °C. The results indicate that the B. mori resins have higher micro-Vickers hardness, three-point bending strength, and elastic modulus (66 Hv, 122 MPa, and 8.7 GPa, respectively) compared to the Eri silk resins (58 Hv, 95 MPa, and 8.2 GPa, respectively). The better mechanical properties of the fibroin resins are related directly to longer drying times. The optimum drying conditions are found to be at a temperature of 100 °C under a-vacuum of -0.1 MPa for a time of 7 d. ATR-FTIR and XRD results show how the fibroin structure changes after resinification and drying. The morphology and the distribution size of particle of the silk powders and the fractured surfaces of the resins are analyzed from SEM micrographs. The present findings demonstrate that silk resins are suitable materials for developing useful applications because of their favorable mechanical properties.
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Affiliation(s)
- H A Tuan
- Muroran Institute of Technology, Japan.
| | - S Hirai
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 050-8585, 27-1 Mizumoto-cho, Muroran-shi, Hokkaido, Japan.
| | - Y Tamada
- Faculty of Textile Science and Technology, Shinshu University, 386-8567, 3-15-1 Tokida, Ueda City, Nagano, Japan
| | - S Akioka
- Muroran Institute of Technology, Japan
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Katoh S, Shikama T, Suzuki T, Suzuki K, Daidoji H, Takahashi K, Fukui A, Tamada Y, Yahagi T, Matsui M, Goto T. P3349Stress-induced LV diastolic dysfunction predicts future cardiac events in patients with preserved ejection fraction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miyaaki H, Tamada Y, Hayashi K, Taura N, Miuma S, Shibata H, Soyama A, Hidaka M, Takatsuki M, Eguchi S, Nakao K. Recurrent Hepatitis B and D Virus Infection in a Liver Transplant Recipient. Transplant Proc 2017; 49:175-177. [PMID: 28104130 DOI: 10.1016/j.transproceed.2016.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 10/19/2016] [Accepted: 11/09/2016] [Indexed: 12/11/2022]
Abstract
Hepatitis B virus (HBV) and hepatitis delta virus (HDV) co-infections progress rapidly and lead to cirrhosis. In Japan, the prevalence of HBV and HDV co-infected patients is low. Therefore, there are few reports of patients with HBV and HDV co-infection having undergone liver transplantation. Herein, we report a rare case of recurrence of HBV and HDV in a 41-year-old man who underwent living donor liver transplantation 4 years prior.
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Affiliation(s)
- H Miyaaki
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Y Tamada
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - K Hayashi
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - N Taura
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Miuma
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Shibata
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - A Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Takatsuki
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - K Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Onodera S, Furuya J, Yamamoto H, Tamada Y, Kondo H. Effects of wearing and removing dentures on oropharyngeal motility during swallowing. J Oral Rehabil 2016; 43:847-854. [DOI: 10.1111/joor.12437] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2016] [Indexed: 11/28/2022]
Affiliation(s)
- S. Onodera
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - J. Furuya
- Department of Oral Health Care Science for Community and Welfare; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Bunkyo-ku Japan
| | - H. Yamamoto
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - Y. Tamada
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - H. Kondo
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
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Mao Y, Tamura T, Yuki Y, Abe D, Tamada Y, Imoto S, Tanaka H, Homma H, Tagawa K, Miyano S, Okazawa H. The hnRNP-Htt axis regulates necrotic cell death induced by transcriptional repression through impaired RNA splicing. Cell Death Dis 2016; 7:e2207. [PMID: 27124581 PMCID: PMC4855646 DOI: 10.1038/cddis.2016.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/18/2016] [Accepted: 03/21/2016] [Indexed: 12/12/2022]
Abstract
In this study, we identify signaling network of necrotic cell death induced by transcriptional repression (TRIAD) by α-amanitin (AMA), the selective RNA polymerase II inhibitor, as a model of neurodegenerative cell death. We performed genetic screen of a knockdown (KD) fly library by measuring the ratio of transformation from pupa to larva (PL ratio) under TRIAD, and selected the cell death-promoting genes. Systems biology analysis of the positive genes mapped on protein-protein interaction databases predicted the signaling network of TRIAD and the core pathway including heterogeneous nuclear ribonucleoproteins (hnRNPs) and huntingtin (Htt). RNA sequencing revealed that AMA impaired transcription and RNA splicing of Htt, which is known as an endoplasmic reticulum (ER)-stabilizing molecule. The impairment in RNA splicing and PL ratio was rescued by overexpresion of hnRNP that had been also affected by transcriptional repression. Fly genetics with suppressor or expresser of Htt and hnRNP worsened or ameliorated the decreased PL ratio by AMA, respectively. Collectively, these results suggested involvement of RNA splicing and a regulatory role of the hnRNP-Htt axis in the process of the transcriptional repression-induced necrosis.
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Affiliation(s)
- Y Mao
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - T Tamura
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Y Yuki
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - D Abe
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Y Tamada
- Department of Computer Science, Graduate School of Information Science and Technology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - S Imoto
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - H Tanaka
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - H Homma
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - K Tagawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - S Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - H Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
- Center for Brain Integration Research, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Inukai Y, Iwase S, Yanagishita T, Tamada Y, Watanabe D, Sato M, Sugenoya J. Gustatory sweating pathways are different from thermal sweating pathways: An interpretation from the findings of a case of hemifacial gustatory sweating deficit. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.038] [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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Ohshima Y, Yanagishita T, Ito K, Tamada Y, Nishimura N, Inukai Y, Iwase S, Watanabe D. A case of acquired idiopathic generalized anhidrosis in a 2-year-old infant. J Eur Acad Dermatol Venereol 2014; 29:1446-8. [PMID: 24698553 DOI: 10.1111/jdv.12499] [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] [Received: 12/30/2013] [Revised: 02/06/2014] [Accepted: 03/03/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Y Ohshima
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - T Yanagishita
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - K Ito
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Y Tamada
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - N Nishimura
- Department of Physiology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Y Inukai
- Department of Physiology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - S Iwase
- Department of Physiology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - D Watanabe
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
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9
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Affiliation(s)
- T. Yanagishita
- Department of Dermatology; Aichi Medical University School of Medicine; Aichi Japan
| | - Y. Tamada
- Department of Dermatology; Aichi Medical University School of Medicine; Aichi Japan
| | - D. Watanabe
- Department of Dermatology; Aichi Medical University School of Medicine; Aichi Japan
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10
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Yamamoto H, Furuya J, Tamada Y, Kondo H. Impacts of wearing complete dentures on bolus transport during feeding in elderly edentulous. J Oral Rehabil 2013; 40:923-31. [PMID: 24237359 DOI: 10.1111/joor.12107] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2013] [Indexed: 11/30/2022]
Abstract
Prosthetic treatment with dentures is often required for the elderly who have reduced swallowing function. Therefore, it is important to understand the relationship between denture-wearing and feeding function from the perspective of swallowing. To clarify changes in bolus transport during feeding in elderly edentulous patients with or without complete dentures. Subjects were 15 elderly edentulous volunteers who were treated with maxillary and mandibular complete dentures. The test food was 10 g of minced agar jelly containing barium sulphate with a particle diameter of 4·0-5·6 mm. Lateral videofluoroscopy was performed to assess the position of the leading edge of the bolus, the bolus volume in each area at swallow onset, bolus transit time and the mandibular position during pharyngeal swallowing. There were significant changes between the bolus transport with and without dentures. Without dentures, the leading edge of the bolus at swallow onset fell from the valleculae area to the hypopharynx, and the bolus volume in the hypopharynx increased. Bolus transit time increased in the oral cavity, valleculae and hypopharynx. The mandibular position shifted anterosuperior direction. The results arose owing to anatomical changes in the oral and pharyngeal structure and the following functional changes: poor food manipulation, poor bolus formation and delayed swallowing reflex. Removing dentures in elderly edentulous individuals influences bolus transport during feeding, resulting in the exacerbation of the reduced swallowing reserve capacity that accompanies ageing, and may increase the risk of dysphagia.
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Affiliation(s)
- H Yamamoto
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
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11
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Sato T, Furuya J, Tamada Y, Kondo H. Impacts of palatal coverage on bolus formation during mastication and swallowing and subsequent adaptive changes. J Oral Rehabil 2013; 40:751-7. [DOI: 10.1111/joor.12089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2013] [Indexed: 11/27/2022]
Affiliation(s)
- T. Sato
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - J. Furuya
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - Y. Tamada
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - H. Kondo
- Department of Prosthodontics and Oral Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
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12
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Ohshima Y, Yanagishita T, Ito K, Tamada Y, Nishimura N, Inukai Y, Iwase S, Sugenoya J, Watanabe D. Treatment of patients with acquired idiopathic generalized anhidrosis. Br J Dermatol 2012; 168:430-2. [PMID: 22709381 DOI: 10.1111/j.1365-2133.2012.11112.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Nakano A, Watanabe D, Akita Y, Kawamura T, Tamada Y, Matsumoto Y. Treatment efficiency of combining photodynamic therapy and ionizing radiation for Bowen’s disease. J Eur Acad Dermatol Venereol 2011; 25:475-8. [DOI: 10.1111/j.1468-3083.2010.03757.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Inukai Y, Iwase S, Kuwahara Y, Shimizu Y, Nishimura N, Sato M, Kanikowska D, Sugenoya J, Nakamura A, Yamamoto H, Taketsuna Y, Hori T, Tsurusawa M, Tamada Y. P25-7 One case of anhidrotic infant with suspected hypothalamus disorder. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61029-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Watanabe D, Kuhara T, Ishida N, Takeo T, Tamada Y, Matsumoto Y. Disseminated mucocutaneous herpes simplex virus infection in an immunocompetent woman. Int J STD AIDS 2010; 21:213-4. [PMID: 20215631 DOI: 10.1258/ijsa.2009.009017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Disseminated mucocutaneous herpes simplex virus (HSV) infection in an immunocompetent person is quite rare. A 19-year-old healthy Japanese woman presented with painful, umbilicated vesicles and pustules on her genital region, both nipples and on the forearm 10 days after the last sexual contact with her partner who had cold sore at that time. Tzanck test and biopsy confirmed the diagnosis of disseminated mucocutaneous HSV infection. She did not have any visceral HSV disease. Skin lesions improved after treatment with acyclovir and erythromycin for seven days. We propose that like herpes gladiatorum, HSV dissemination in this case was acquired by close body contact.
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Affiliation(s)
- D Watanabe
- Department of Dermatology, Aichi Medical University, Nagakute, Aichi 480-1195, Japan.
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Tamada Y, Sato M, Nakamizo S, Kondo M. Anisotropy and individual differences in depth perception based on binocular disparity and motion parallax. J Vis 2010. [DOI: 10.1167/7.9.829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Watanabe D, Kuhara T, Ishida N, Takama H, Tamada Y, Matsumoto Y. Herpes zoster of the nipple: rapid DNA-based diagnosis by the loop-mediated isothermal amplification method. Int J STD AIDS 2009; 21:66-7. [PMID: 19884358 DOI: 10.1258/ijsa.2009.009178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A 28-year-old Japanese man presented with grouped erosions and vesicles on an erythematous base affecting the right areola and the surrounding skin. A Tzanck smear from the vesicle revealed giant cells. An initial clinical diagnosis of mammary herpes simplex was considered but to explore the differential diagnosis, viral DNA was amplified by the loop-mediated isothermal amplification (LAMP) method. DNA replication was observed only in varicella zoster virus LAMP mixture, and this confirmed a diagnosis of herpes zoster. The patient was treated with 3000 mg of daily oral valacyclovir for seven days. After antiviral treatment, the lesion had healed and the pain had resolved completely.
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Affiliation(s)
- D Watanabe
- Department of Dermatology, Aichi Medical University, Nagakute, Aichi 480-1195, Japan.
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Inukai Y, Iwase S, Sugenoya J, Nishimura N, Izumi M, Goto K, Sahashi K, Miyazaki Y, Nakamura A, Tamada Y. P1.30 Pathophysiology of hemifacial flushing and contralateral anhidrosis with crossed hypohidrosis under the chest at heating in children. Auton Neurosci 2009. [DOI: 10.1016/j.autneu.2009.05.126] [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]
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Watanabe D, Kuhara T, Ishida N, Tamada Y, Matsumoto Y. Sarcoid tissue reaction on herpes zoster scars in a myelodysplastic syndrome patient: Wolf's isotopic response. J Eur Acad Dermatol Venereol 2009; 23:475-7. [DOI: 10.1111/j.1468-3083.2008.02924.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Nakano A, Tamada Y, Watanabe D, Ishida N, Yamashita N, Kuhara T, Yanagishita T, Kawamura C, Akita Y, Matsumoto Y. A pilot study to assess the efficacy of photodynamic therapy for Japanese patients with actinic keratosis in relation to lesion size and histological severity. Photodermatology, Photoimmunology & Photomedicine 2009; 25:37-40. [DOI: 10.1111/j.1600-0781.2009.00401.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Ishida N, Watanabe D, Akita Y, Nakano A, Yamashita N, Kuhara T, Yanagishita T, Takeo T, Tamada Y, Matsumoto Y. Etretinate enhances the susceptibility of human skin squamous cell carcinoma cells to 5-aminolaevulic acid-based photodynamic therapy. Clin Exp Dermatol 2008; 34:385-9. [PMID: 19077103 DOI: 10.1111/j.1365-2230.2008.03003.x] [Citation(s) in RCA: 13] [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: 11/30/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) with 5-aminolaevulinic acid (5-ALA) is a noninvasive and effective treatment for superficial skin cancers. Etretinate, a derivate of vitamin A, with the chemical formula ethyl(2E,4E,6E,8E)-9-(4-methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-2,4,6,8-nona-tetraenoate, has been reported to have antitumour effects and to regulate the proliferation and differentiation of skin cancers. OBJECTIVE In order to develop more efficient PDT, we investigated whether etretinate enhanced the cytotoxic action of ALA-based PDT against human squamous cell carcinoma cell line, HSC-5. METHOD The in vitro cytotoxicity was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptotic cells were detected by double-staining with fluorescent annexin V and propidium iodide. Intracellular protoporphyrin IX (PpIX) converted from exogenous ALA was measured by a fluorescence meter. RESULTS HSC-5 cells pretreated with a nontoxic concentration of etretinate became more susceptible to the cytotoxic action of ALA-based PDT. Etretinate-pretreated cells underwent apoptosis in response to ALA-based PDT. Etretinate pretreatment resulted in enhanced accumulation of ALA-dependent intracellular PpIX. CONCLUSIONS The results suggest that etretinate enhances the susceptibility of HSC-5 cells to ALA-based PDT via the intracellular increase of ALA-dependent PpIX. Etretinate might be useful for improvement of ALA-based PDT.
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Affiliation(s)
- N Ishida
- Department of Dermatology, Aichi Medical University School of Medicine, Nagakute, Aich, Japan.
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Tanaka S, Matsumo Y, Tamada Y. P40
A case of contact dermatitis to polyethylene glycol. Contact Dermatitis 2008. [DOI: 10.1111/j.0105-1873.2004.0309fv.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yasue H, Kitajima M, Tamada Y, Rezaeian AH, Hiraiwa H, Hayashi T, Shimogiri T. Assignment of 115 genes from HSA9 and HSA14 to SSC1q by RH mapping to generate a dense human-pig comparative map. Anim Genet 2008; 39:301-5. [PMID: 18410475 DOI: 10.1111/j.1365-2052.2008.01716.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A large number of significant QTL for economically important traits including average daily gain have been located on SSC1q, which, as shown by chromosome painting, corresponds to four human chromosomes (HSA9, 14, 15 and 18). To provide a comprehensive comparative map for efficient selection of candidate genes, 81 and 34 genes localized on HSA9 and HSA14 respectively were mapped to SSC1q using a porcine 7000-rad radiation hybrid panel (IMpRH). This study, together with the cytogenetic map (http://www2.toulouse.inra.fr/lgc/pig/cyto/genmar/htm/1GM.HTM), demonstrates that SSC1q2.1-q2.13 corresponds to the region ranging from 44.6 to 63.2 Mb on HSA14q21.1-q23.1, the region from 86.5 to 86.8 Mb on HSA15q24-q25, the region from 0.9 to 27.2 Mb on HSA9p24.3-p21, the region from 35.1 to 38.0 Mb on HSA9p13, the region from 70.3 to 79.3 Mb on HSA9q13-q21 and the region from 96.4 to 140.0 Mb on HSA9q22.3-q34. The conserved synteny between HSA9 and SSC1q is interrupted by at least six sites, and the synteny between HSA14 and SSC1q is interrupted by at least one site.
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Affiliation(s)
- H Yasue
- Animal Genome Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-0901, Japan.
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Suzuki N, Tamada Y, Shigirahara K, Suzuki A, Susumu N, Ishida I, Aoki D. Human monoclonal antibody for ovarian clear cell carcinoma-2, a human monoclonal antibody with antitumor activity against ovarian cancer cells that recognizes CA125-like antigen. Int J Gynecol Cancer 2007; 18:996-1006. [PMID: 18028379 DOI: 10.1111/j.1525-1438.2007.01147.x] [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: 11/27/2022] Open
Abstract
In recent years, antibody therapy employing monoclonal antibodies has become a new approach for treating cancer. This study was performed to establish a human monoclonal antibody recognizing an epitope related to CA125 using KM mice and to assess its reactivity with ovarian cancer cells. A human ovarian clear cell adenocarcinoma cell line (RMG-I) was used to immunize KM mice, and hybridoma supernatant was obtained by a standard method employing enzyme-linked immunosorbent assay screening. Next, selection of hybridomas was performed with two antibodies (MA602-1 and MA602-6) and a sandwich immunoassay for CA125-like antigen, and then the limiting dilution was used to obtain a human monoclonal antibody. Immunohistochemical reactivity of this antibody (human monoclonal antibody for ovarian clear cell carcinoma-2 [HMOCC-2]) with ovarian cancer was assessed, while its specificity was analyzed by Western blotting. Various antibodies were used to identify the epitope targeted by HMOCC-2. Finally, the antitumor effect of HMOCC-2 was assessed by intraperitoneal administration to SCID (severe combined immunodeficiency) mice with heterografts of RMG-I tumors. HMOCC-2 showed a positive reaction with 60% (63/105) of ovarian cancer specimens. Western blotting of the membrane fraction of RMG-I revealed several bands at 120-250 kd. HMOCC-2 recognized the CA125-like antigens identified by several antibodies. HMOCC-2 also exhibited significant antitumor activity (P < 0.01) against ovarian cancer heterografts. HMOCC-2 reacts specifically with ovarian cancer cells via a target epitope analogous to that of CA125 and also exhibits activity against ovarian tumors. These findings suggest that it may have the potential to be employed clinically for molecular-targeting therapy.
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Affiliation(s)
- N Suzuki
- Department of Obstetrics and Gynecology, St. Marianna University, School of Medicine, Kanagawa, Japan
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26
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Affiliation(s)
- X G Liu
- Genome Research Department, National Institute of Agrobiological Sciences, Tsukuba, Japan
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Yamamoto S, Tamada Y, Ono T, Takano M. Easy Axis Alignment of L10-FePt Nanoparticles Synthesized by the "SiO2-Nanoreactor" Method. ACTA ACUST UNITED AC 2007. [DOI: 10.3379/jmsjmag.31.199] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nomura H, Aoki D, Suzuki N, Susumu N, Suzuki A, Tamada Y, Kataoka F, Higashiguchi A, Ezawa S, Nozawa S. Analysis of clinicopathologic factors predicting para-aortic lymph node metastasis in endometrial cancer. Int J Gynecol Cancer 2006; 16:799-804. [PMID: 16681764 DOI: 10.1111/j.1525-1438.2006.00529.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [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: 11/26/2022] Open
Abstract
The purposes of this study were to compare the relationships between para-aortic lymph node metastasis and various clinicopathologic factors to evaluate whether para-aortic lymph node dissection is necessary when treating endometrial cancer. A retrospective study was performed on 841 patients with endometrial cancer, who underwent the initial surgery at the Keio University Hospital. Clinicopathologic factors related to para-aortic lymph node metastasis significant on a univariate analysis were analyzed in a multivariate fashion using a logistic model. According to the multivariate analysis, the clinicopathologic factor most strongly related to the existence of para-aortic lymph node metastasis was positive pelvic lymph node metastasis (P < 0.01). Among the 155 patients who underwent pelvic and para-aortic lymph node dissection, the difference of 5-year overall survival by the presence of retroperitoneal lymph node metastasis was examined by Kaplan-Meier method. The prognosis was poor even if para-aortic lymph node dissection was performed in cases of positive para-aortic lymph node metastasis. In conclusion, when deciding whether to perform para-aortic lymph node dissection in patients with endometrial cancer, it is necessary to consider the pelvic lymph nodal status. If there is no pelvic lymph node metastasis, it could not be necessary to perform para-aortic lymph node dissection.
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Affiliation(s)
- H Nomura
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan
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Oka T, Walkup RD, Tamada Y, Nakajima E, Tochigi A, Shearer TR, Azuma M. Amelioration of retinal degeneration and proteolysis in acute ocular hypertensive rats by calpain inhibitor ((1S)-1-((((1S)-1-benzyl-3-cyclopropylamino-2,3-di-oxopropyl)amino)carbonyl)-3-methylbutyl)carbamic acid 5-methoxy-3-oxapentyl ester. Neuroscience 2006; 141:2139-45. [PMID: 16843603 DOI: 10.1016/j.neuroscience.2006.05.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2006] [Revised: 05/25/2006] [Accepted: 05/27/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Our recent study suggested involvement of calpain-induced proteolysis in retinal degeneration and dysfunction in acute ocular hypertensive rats. The purpose of the present study was to determine if an orally available form of calpain inhibitor, ((1S)-1-((((1S)-1-benzyl-3-cyclopropylamino-2,3-di-oxopropyl)amino)carbonyl)-3-methylbutyl)carbamic acid 5-methoxy-3-oxapentyl ester (SNJ-1945), ameliorated retinal degeneration induced by acute hypertension in rats. To help extrapolate the effect of SNJ-1945 from the rat model to the human glaucomatous patient, in vitro inhibition of calpain-induced proteolysis by SNJ-1945 in monkey and human retinal proteins was compared with proteolysis in rat proteins. METHODS Intraocular pressure (IOP) in rats was elevated to 110 mm Hg for 50 min. SNJ-1945 was administrated i.p. or orally before ocular hypertension. Retinal degeneration was evaluated by hematoxylin and eosin (H&E) staining and cell counting. Transcripts for calpains and calpastatin in rat, monkey, and human retinas were measured by quantitative RT-PCR. Calpain activities were determined by casein zymography. Soluble retinal proteins from rat, monkey, and humans were incubated with calcium to activate calpains, with or without SNJ-1945. Proteolysis of calpain substrate alpha-spectrin was analyzed by immunoblotting. RESULTS Elevated IOP caused retinal degeneration and proteolysis of alpha-spectrin. Both i.p. and oral administration of SNJ-1945 inhibited proteolysis of alpha-spectrin and ameliorated retinal degeneration. Transcript levels for calpain 1 and calpastatin were similar in rat, monkey, and human retinas. Calpain 2 transcript levels were higher in rats compared with monkey and human. Appreciable caseinolytic activities due to calpains were observed in monkey and human retinas. Incubation of retinal soluble proteins with calcium led to proteolysis of alpha-spectrin due to calpains in rat, monkey, and human samples. SNJ-1945 similarly inhibited proteolysis in all species. CONCLUSION Our results suggested that orally available calpain inhibitor SNJ-1945 might be a possible candidate drug for testing in preventing progression of glaucomatous retinal degeneration.
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Affiliation(s)
- T Oka
- Kobe Creative Center, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishiku, Kobe, Hyogo 651-2241, Japan
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30
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Saeki H, Tamada Y, Watanabe D, Akita Y, Matsumoto Y, Imai C, Kadono T, Maekawa T, Hattori N, Watanabe A, Torii H, Tamaki K. Analysis of gene mutations in four cases of dermatofibrosarcoma protuberans. Clin Exp Dermatol 2006; 31:441-4. [PMID: 16681596 DOI: 10.1111/j.1365-2230.2006.02097.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fusion of the collagen type I alpha 1 (COL1A1) gene with the platelet-derived growth factor B-chain (PDGFB) gene has been described in dermatofibrosarcoma protuberans (DFSP). Various exons of the COL1A1 gene have been shown to be involved in the fusion with exon 2 of the PDGFB gene. We examined the breakpoints of the COL1A1 gene using the tumour specimens from four patients with DFSP. The COL1A1-PDGFB fusion transcripts were detected from the cultured tumour cells by reverse transcriptase polymerase chain reaction. Sequence analysis revealed that the ends of exons 23, 25, 26 and 36 in the COL1A1 gene were fused with the start of exon 2 in the PDGFB. This study identified three novel COL1A1 breakpoints: exons 23, 26 and 36 of the COL1A1 gene. In one case, the tumour was composed of two areas that differed in cytological atypia, cellularity and mitotic activity, indicating the dedifferentiation of the tumour. In tumour cells from two different areas the same aberrant fusion transcripts were identified. These results suggest that the dedifferentiation of tumour cells has nothing to do with the specific breakpoints of the COL1A1 gene, but depends on other unknown factors.
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Affiliation(s)
- H Saeki
- Aichi Medical University, Aichi, Japan.
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Morimoto Y, Tamada Y, Yamamoto S, Takano M, Ono T. Detailed studies on structural and magnetic properties of L10-FePt nanoparticles synthesized via the "SiO2-nanoreactor" method. ACTA ACUST UNITED AC 2006. [DOI: 10.3379/jmsjmag.30.464] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Suzuki N, Aoki D, Orikawa K, Suzuki A, Susumu N, Tamada Y, Sakayori M, Tsukazaki K, Mukai M, Kikuchi H, Ishida I, Nozawa S. 8-1A, a human monoclonal antibody that reacts with intact human chorionic gonadotropin. Placenta 2005; 27:333-9. [PMID: 16338478 DOI: 10.1016/j.placenta.2005.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2004] [Revised: 01/27/2005] [Accepted: 02/01/2005] [Indexed: 10/25/2022]
Abstract
The incidence of choriocarcinoma has decreased over time and therapeutic results have improved about 90% complete remission in patients without extensive metastasis. However, some choriocarcinomas metastasize to other organs and show resistance to chemotherapy, having a poor prognosis despite multidisciplinary treatment. Better methods of early diagnosis for recurrence or micrometastasis, and treatment against cases with intractable gestational trophoblastic neoplasia (GTN) are needed to improve the prognosis. Human chorionic gonadotropin (hCG) is a glycoprotein hormone composed of two dissimilar subunits and a tumor marker to make a diagnosis and monitor therapeutic effect in GTN. Even when hCG levels in the serum become too low to measure with the hCG beta-CTP system which is the most sensitive assay, there are estimated to be approximately 10,000 trophoblastic cells in the body. Residual trophoblast cells may cause symptoms such as bleeding or undergo malignant transformation to choriocarcinoma. Since most monoclonal antibodies developed so far are murine, administration creates human anti-mouse antibodies, resulting in clinical failure. More recent mouse/human chimeric antibodies or humanized antibodies still possess substantial immunogenicity that makes repeated administration difficult. In the present study, KM mice that can produce completely human monoclonal antibodies were used to prepare hCG-specific human monoclonal antibody. This yielded 8-1A, a human monoclonal antibody capable of reacting with intact hCG. In the future, new diagnostic techniques and treatments for chorionic diseases may be developed using this kind of human monoclonal antibody.
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Affiliation(s)
- N Suzuki
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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Susumu N, Aoki D, Noda T, Nagashima Y, Hirao T, Tamada Y, Banno K, Suzuki A, Suzuki N, Tsuda H, Inazawa J, Nozawa S. Diagnostic clinical application of two-color fluorescence in situ hybridization that detects chromosome 1 and 17 alterations to direct touch smear and liquid-based thin-layer cytologic preparations of endometrial cancers. Int J Gynecol Cancer 2005. [DOI: 10.1136/ijgc-00009577-200501000-00012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
We performed two-color fluorescence in situ hybridization (FISH) on direct touch smears and liquid-based thin-layer (ThinPrep) cytological preparations of endometrial tumors to detect alterations of chromosome 1 and 17 that present with high incidence in endometrial cancers. The DNA probes used for two-color FISH analysis were a combination of the probes designed for 17cen (cCI 17-321) and 17p13.3 (D17S34), and a combination of the probes designed for 1q12 (D1Z1) and 1p36 (cCI1-5335). Numerical or structural alterations of chromosome 1 and/or 17 were detected in 95% (19 of 20 cases) of the direct touch smears obtained from endometrial cancer, while these alterations were also detected in 93% (12 of 13 cases) of samples obtained from grade 1 endometrioid adenocarcinoma cases, including three cases that could not be diagnosed as positive by conventional Papanicolaou cytopathologic staining. Using ThinPrep cytopathologic preparations, numerical or structural abnormalities were found in 26 (90%) and five (100%) cases, respectively, of samples obtained transcervically from 29 endometrial cancer and five atypical endometrial hyperplasia cases. Therefore, two-color FISH may be a useful diagnostic method for endometrial adenocarcinoma and premalignant lesions that demonstrate only slight cellular atypia in conventional cytopathologic preparations.
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Susumu N, Aoki D, Noda T, Nagashima Y, Hirao T, Tamada Y, Banno K, Suzuki A, Suzuki N, Tsuda H, Inazawa J, Nozawa S. Diagnostic clinical application of two-color fluorescence in situ hybridization that detects chromosome 1 and 17 alterations to direct touch smear and liquid-based thin-layer cytologic preparations of endometrial cancers. Int J Gynecol Cancer 2005; 15:70-80. [PMID: 15670300 DOI: 10.1111/j.1048-891x.2005.14424.x] [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: 12/24/2022] Open
Abstract
We performed two-color fluorescence in situ hybridization (FISH) on direct touch smears and liquid-based thin-layer (ThinPrep) cytological preparations of endometrial tumors to detect alterations of chromosome 1 and 17 that present with high incidence in endometrial cancers. The DNA probes used for two-color FISH analysis were a combination of the probes designed for 17cen (cCI 17-321) and 17p13.3 (D17S34), and a combination of the probes designed for 1q12 (D1Z1) and 1p36 (cCI1-5335). Numerical or structural alterations of chromosome 1 and/or 17 were detected in 95% (19 of 20 cases) of the direct touch smears obtained from endometrial cancer, while these alterations were also detected in 93% (12 of 13 cases) of samples obtained from grade 1 endometrioid adenocarcinoma cases, including three cases that could not be diagnosed as positive by conventional Papanicolaou cytopathologic staining. Using ThinPrep cytopathologic preparations, numerical or structural abnormalities were found in 26 (90%) and five (100%) cases, respectively, of samples obtained transcervically from 29 endometrial cancer and five atypical endometrial hyperplasia cases. Therefore, two-color FISH may be a useful diagnostic method for endometrial adenocarcinoma and premalignant lesions that demonstrate only slight cellular atypia in conventional cytopathologic preparations.
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Affiliation(s)
- N Susumu
- Department of Obstetrics and Gynecology, Keio University, School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo 160-8582, Japan.
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Akita Y, Kozaki K, Nakagawa A, Saito T, Ito S, Tamada Y, Fujiwara S, Nishikawa N, Uchida K, Yoshikawa K, Noguchi T, Miyaishi O, Shimozato K, Saga S, Matsumoto Y. Cyclooxygenase-2 is a possible target of treatment approach in conjunction with photodynamic therapy for various disorders in skin and oral cavity. Br J Dermatol 2004; 151:472-80. [PMID: 15327557 DOI: 10.1111/j.1365-2133.2004.06053.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [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: 01/13/2023]
Abstract
BACKGROUND Anti-cancer effects of cyclooxygenase (COX)-2 inhibitors have been reported, but not fully investigated in skin and oral diseases. 5-aminolaevulinic acid (ALA)-based photodynamic therapy (PDT) for treating those patients with skin and oral lesions is a highly sophisticated procedure, but the incidence of disease recurrence after treatment is rather significant. OBJECTIVE To confirm that COX-2 could be a molecular target in adjunctive therapy to ALA-based PDT, we investigated (i) COX-2 expression in various skin and oral diseases, and (ii) the inhibitory effects on cellular growth of COX-2 selective inhibitor (nimesulide), ALA-based PDT and their combination on human oral squamous cell carcinoma (SCC) cell lines. METHODS A total of 129 biopsy samples from the skin and oral mucosal lesions were tested immunohistochemically for COX-2 expression. Then the in vitro effects of nimesulide, ALA-based PDT, and their combination were determined on two SCC cell lines, HSC-2 and HSC-4. Three different methods (MTT assay, double-staining for annexin V and propidium iodide, caspase-3/CPP32 fluorometric protease assay) were applied for evaluation of their inhibitory effects on these two cell lines. RESULTS Among the skin diseases, a considerable number of COX-2 high expressers were found in actinic keratosis (15 of 25, 60%), Bowen's disease (13 of 17, 76%) and extramammary Paget's disease (15 of 15, 100%). In contrast, only one of 33 (3%) basal cell carcinoma tumours was a COX-2 high expresser. Among the oral mucosal biopsies, the proportion of COX-2 high expressers increased gradually from hyperplasia (one of six, 17%) through mild dysplasia (five of eight, 63%) and moderate dysplasia (20 of 23, 87%) to severe dysplasia (two of two, 100%). Nimesulide had an inhibitory effect in vitro on HSC-2 (proven to be a COX-2 high expresser), but not on HSC-4 (a COX-2 non-expresser). While ALA-based PDT showed an inhibitory effect on both HSC-2 and HSC-4, most importantly the combination of nimesulide and ALA-based PDT demonstrated a significant synergistic effect on the cellular growth inhibition of only HSC-2, but not of HSC-4. CONCLUSIONS Our study strongly suggests that COX-2 can be one of the molecular targets in treating various skin and oral diseases. The results from our in vitro experiments also prompt us to develop a new protocol with a combination of COX-2 selective inhibitor and ALA-based PDT for more effective treatment of those diseases.
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Affiliation(s)
- Y Akita
- Department of Pathology, Aichi Medical University School of Medicine, Nagakute, Aichi 480-1195, Japan
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Mizutani K, Tamada Y, Hara K, Tsuzuki T, Saeki H, Tamaki K, Matsumoto Y. Imatinib mesylate inhibits the growth of metastatic lung lesions in a patient with dermatofibrosarcoma protuberans. Br J Dermatol 2004; 151:235-7. [PMID: 15270901 DOI: 10.1111/j.1365-2133.2004.06024.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tamada Y, Aoki D, Nozawa S, Irimura T. Model for paraaortic lymph node metastasis produced by orthotopic implantation of ovarian carcinoma cells in athymic nude mice. Eur J Cancer 2004; 40:158-63. [PMID: 14687800 DOI: 10.1016/j.ejca.2003.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Lymph node metastasis through the lymphatic vessels is a critical step in determining the outcome of ovarian cancer patients, and prognosis should be improved by preventing lymph node metastasis. However, experimental models for lymph node metastasis of ovarian carcinoma are not available. We developed an orthotopic transplantation model to study this process in nude mice using the human ovarian carcinoma cell lines, KF and MH. Highly metastatic sublines (KF-LN3 and MH-LN3) were selected in vivo in nude mice by repeated orthotopic transplantation, lymph node metastasis formation and culturing the tumour cells in vitro. Because this model seems to correspond to the advanced clinical stage of ovarian carcinomas, it should be useful in understanding the molecular biology of ovarian carcinomas and in the development of therapeutic modalities against lymph node metastasis.
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Affiliation(s)
- Y Tamada
- Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo 160-8582, Japan
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Yokoo K, Aoyama H, Tamada Y, Hashimoto T, Kuroyanagi Y, Kagawa S, Kubo K, Matsui H. 034
Application of Allogeneic Cultured Dermal Substitute to Skin Defects After Excision of Skin Cancer. Wound Repair Regen 2004. [DOI: 10.1111/j.1067-1927.2004.abstractaw.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
We propose a new model for the splicing of long introns, which we call intrasplicing. The basic idea of this model is that the splicing of long introns may be facilitated by the splicing of inner parts of the intron prior to the splicing of the long intron itself. Since long introns have up to about 100,000 bases, this model seems to be a likely explanation of their splicing. To investigate the possibility of this model, we develop a new computational method for the analysis of DNA sequences with respect to splicing. We analyze the genomic sequence of four species with our method and derive several results indicating that intrasplicing may be an appropriate model for the splicing of at least part of the long intron sequences.
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Affiliation(s)
- S Ott
- Human Genome Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.
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Nakaseko H, Kobayashi M, Akita Y, Tamada Y, Matsumoto Y. Histological changes and involvement of apoptosis after photodynamic therapy for actinic keratoses. Br J Dermatol 2003; 148:122-7. [PMID: 12534605 DOI: 10.1046/j.1365-2133.2003.04898.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Photodynamic therapy (PDT), which employs a combination of a tumour-localizing photosensitizer and visible light, has been used to treat superficial malignancies in the epidermis. OBJECTIVES To examine histological changes and the role of apoptosis in lesions of actinic keratosis (AK) after PDT using 5-aminolaevulinic acid (ALA) and excimer dye laser. METHODS After topical ALA-PDT, biopsy specimens were collected from 18 skin lesions in 15 patients with AK. Paraffin-embedded sections of the skin specimens were stained with haematoxylin and eosin. The detection of apoptosis was performed using a terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end labelling (TUNEL) method, antiactivated caspase-3 antibody and anti-Fas antibody. RESULTS One hour after PDT, cells with eosinophilic cytoplasm and markedly stained nuclei were found, and vacuolation of some tumour cells was noted in the lower layer of the epidermis. An infiltrate of lymphocytes and neutrophils was observed in the upper layer of the dermis. One day after PDT, all layers of the epidermis exhibited slightly degenerative necrosis, with shadow cell formation and chromatin condensation around the nuclear membrane in the lower layer of the epidermis. Necrosis in all layers of the epidermis and lymphocyte infiltration in the dermis were found 3 days after PDT. Tumour cells had disappeared and regenerative thickening of the epidermis was observed 7 days after PDT. TUNEL staining revealed apoptosis-positive cells in the epidermis in 8 of 11 specimens obtained 1 day after PDT. Activated caspase-3 expression was noted in the lower layer of the epidermis in four of these eight TUNEL-positive specimens. CONCLUSIONS Results suggested that apoptosis is involved in tumour cell death after PDT in patients with AK, and that it occurs within 1 day after PDT.
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Affiliation(s)
- H Nakaseko
- Department of Dermatology, Aichi Medical University, Nagakute, Japan.
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Bannai H, Tamada Y, Maruyama O, Miyano S. [A system for supporting knowledge discovery from genomic data: software library Hypothesis Creator]. Tanpakushitsu Kakusan Koso 2001; 46:2555-60. [PMID: 11802429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Suwa F, Jin Y, Lu H, Li X, Tipoe GL, Lau TY, Tamada Y, Kuroki K, Fang YR. Alteration of apoptosis in cleft palate formation and ectomesenchymal stem cells influenced by retinoic acid. Okajimas Folia Anat Jpn 2001; 78:179-86. [PMID: 11915360 DOI: 10.2535/ofaj1936.78.5_179] [Citation(s) in RCA: 12] [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: 11/09/2022]
Abstract
It has been shown that apoptosis is involved in normal embryonic development. The aim of the present study was to elucidate the role and alteration of apoptosis in the pathogenesis of cleft palate induced by retinoic acid (RA) and the ectomesenchymal stem (EMS) cells influenced by RA. RA was administered by gavage to pregnant C57BL/6N strain mice in the experimental group, and the control group received oil alone. Pregnant mice were killed at set periods of time thereafter and histologically analyzed. EMS cells explanted from the palatal shelves of embryonic mice were cultured and characterized by immunohistochemistry, growth curves and population-doubling time. The alterations of apoptosis of EMS cells and developing palatal shelves influenced by RA were evaluated by the terminal deoxynucleotidyl transferase-mediated UTP-biotin nick end-labeling (TUNEL) method. RA-treated mice showed formation of cleft palates resulted from the small size of the palatal shelves and their failure to lift. TUNEL staining showed that the number of apoptotic mesenchymal cells in palatal shelves in the RA-treated mice was increased significantly when compared with the control group. The primary culture of EMS cells proceeded successfully. The population-doubling time of RA-treated cells was much longer compared with non-treated EMS cells. RA also dramatically increased the number of apoptotic cells in EMS cells in vitro. We concluded that EMS cells are the crucial cells in palate development. RA could inhibit the proliferation and induced the apoptosis of EMS cells. The inhibition of growth and excess apoptosis of EMS cells may contribute to the formation of cleft palate and other orofacial congenital malformations.
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Affiliation(s)
- F Suwa
- Department of Oral Histology and Pathology, Stomatological College, Fourth Military Medical University, Xi'an, P.R. China
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Kato M, Takeda K, Kawamoto Y, Tsuzuki T, Dai Y, Nakayama S, Toriyama K, Tamada Y, Takahashi M, Nakashima I. RET tyrosine kinase enhances hair growth in association with promotion of melanogenesis. Oncogene 2001; 20:7536-41. [PMID: 11709725 DOI: 10.1038/sj.onc.1204918] [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] [Received: 06/04/2001] [Revised: 08/07/2001] [Accepted: 08/14/2001] [Indexed: 11/09/2022]
Abstract
We first demonstrated that c-Ret protein is transiently expressed mainly in the inner and outer root sheaths of hair follicles soon after birth in the skin of normal C57BL/6 and BALB/c mice. A longer-lasting expression of activated RET protein overlapped the c-Ret expression with some preferential expression in the outer root sheath in close association with increase in the number of S-100 protein-containing cells in the area and excess melanogenesis in and around hair bulbs in the skin of RFP-RET-transgenic mice on a C57BL/6 background (RFP-RET/B6). Hair follicles in the skin of the transgenic mice continuously showed histology of the anagen phase, and the recovery period for the hair of the transgenic mice after shaving was shortened. Such growth promotion was not observed in the case of white hairs of RFP-RET-transgenic mice on a BALB/c background. These results suggest that RET works to extend the anagen phase in association with upregulation of melanin production.
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Affiliation(s)
- M Kato
- Graduate Department of Immunology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan
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Hayashi S, Ueda M, Amaya F, Matusda T, Tamada Y, Ibata Y, Tanaka M. Serotonin modulates expression of VIP and GRP mRNA via the 5-HT(1B) receptor in the suprachiasmatic nucleus of the rat. Exp Neurol 2001; 171:285-92. [PMID: 11573980 DOI: 10.1006/exnr.2001.7759] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The expression of vasoactive intestinal peptide (VIP) and gastrin-releasing peptide (GRP) in the suprachiasmatic nucleus (SCN) changes depending on light. VIP mRNA increases and GRP mRNA decreases in the light phase, while they do not show change without light. In the present study we investigated the involvement of serotonin (5-HT) in the expression of VIP and GRP messenger RNA in the SCN of the rat. The decrease in VIP mRNA and the increase in GRP mRNA in the light phase were amplified by 5-HT depletion using 5,6-dihydroxytryptamine injected into the lateral ventricle. These enhancements due to 5-HT depletion were reversed to control levels by applying 5-HT(1B) agonists TFMPP and CGS12066A, but not a 5-HT(1A)/5-HT(7) agonist, 8-OH-DPAT. The 5-HT(1B) receptor is known to exist on the terminals of the retinohypothalamic tract (RHT). Therefore, next we investigated the morphological relationship of RHT and 5-HT terminals by double-labeling immunocytochemistry and demonstrated that 5-HT-immunoreactive fibers and cholera toxin B subunit-labeled RHT terminals were intermingled in the ventrolateral SCN, and 5-HT axon processes had close contact with RHT terminals. Collectively, these pharmacological and morphological results suggest that 5-HT afferents from raphe nuclei modulate VIP and GRP expression in neurons of the ventrolateral SCN by activating the 5-HT(1B) receptor in the RHT.
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Affiliation(s)
- S Hayashi
- Department of Anatomy & Neurobiology, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji Kamikyo-ku, Kyoto, 602-0841, Japan
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Shirakabe M, Yamaguchi S, Tamada Y, Baniya G, Fukui A, Miyawaki H, Tomoike H. Impaired distensibility of the left ventricle after stiffening of the right ventricle. J Appl Physiol (1985) 2001; 91:435-40. [PMID: 11408461 DOI: 10.1152/jappl.2001.91.1.435] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Acute and chronic alterations of right ventricular (RV) wall properties can change left ventricular (LV) performance. We investigated whether and how stiffening of the RV free wall alters LV diastolic distensibility. We used cross-circulated isolated hearts, in which the LV and RV were independently controllable. Stiffness of the RV free wall was altered by intramuscular injections of glutaraldehyde into the RV free wall after right coronary artery ligation. We measured circumferential and longitudinal regional lengths in the septum and LV free wall. During data acquisition, RV volume was held constant. After the RV free wall was stiffened by glutaraldehyde, the LV diastolic pressure-volume relation shifted upward and became steeper. Importantly, stiffening of the RV free wall increased the diastolic regional area in the septum and LV free wall under constant LV volume. The augmented regional dimensions may result in enhanced regional tension under constant LV volume and may be related to the observed increase in LV diastolic intracavitary pressure. The impaired LV diastolic distensibility by stiffening of the RV free wall may be at least partly explained by myocardial stretch, probably due to LV deformation.
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Affiliation(s)
- M Shirakabe
- First Department of Internal Medicine, Yamagata University School of Medicine, Yamagata 990-9585, Japan
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47
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Iijima N, Matsumoto Y, Yano T, Tanaka M, Yamamoto T, Kakihara K, Kataoka Y, Tamada Y, Matsumoto H, Suzuki N, Hinuma S, Ibata Y. A novel function of prolactin-releasing peptide in the control of growth hormone via secretion of somatostatin from the hypothalamus. Endocrinology 2001; 142:3239-43. [PMID: 11416047 DOI: 10.1210/endo.142.7.8257] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The present study examined a novel function of PRL-releasing peptide (PrRP) on the neuroendocrine. PrRP-immunoreactive nerve fibers and nerve terminals were located in the vicinity of the somatostatin (SOM)-neurons in the hypothalamic periventricular nucleus (PerVN). Immuno-electron microscopy revealed that PrRP-immunoreactive nerve terminals made synaptic contacts with nonimmunoreactive neuronal elements in the PerVN. Intracerebroventricular (icv) administration of PrRP induced immediate early gene, NGFI-A, in SOM-neurons in the PerVN. Double-labeling in situ hybridization showed that some parts of SOM-neurons in the PerVN expressed PrRP receptor messenger RNA. Therefore, some parts of SOM-neurons in the PerVN are considered to be directly innervated by PrRP via PrRP receptor. In addition to the above morphological characteristics, icv administration of PrRP decreased plasma GH levels. Such inhibitory effects of PrRP on the secretion of GH from the anterior pituitary were diminished by depletion or neutralization of SOM. From these findings it was strongly suggested that SOM-neurons respond to PrRP and secrete SOM into the portal vessels and thus inhibit GH secretion from the anterior pituitary.
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Affiliation(s)
- N Iijima
- Department of Anatomy, Kyoto Prefectural University of Medicine, Kyoto 602-0841, Japan
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Tamada Y, Fukiage C, Mizutani K, Yamaguchi M, Nakamura Y, Azuma M, Shearer TR. Calpain inhibitor, SJA6017, reduces the rate of formation of selenite cataract in rats. Curr Eye Res 2001; 22:280-5. [PMID: 11462167 DOI: 10.1076/ceyr.22.4.280.5505] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE 1) To measure the amount of calpain inhibitor SJA6017 taken up by lenses of young rats after administration; and 2) To test efficacy of SJA6017 against selenite cataract in regard to amelioration of proteolysis of lens protein and prevention of lens nuclear opacity. METHODS Selenite nuclear cataracts were produced by subcutaneous injection of an overdose of sodium selenite to 16-day-old rats. SJA6017 was administered daily using intraperitoneal injections at 100 mg/kg body weight/day for 4 days. Lenses were observed and photographed by slit lamp biomicroscopy, and scored into one of three stages. Enucleated lenses were also scored into one of four stages and lens opacities in the nuclear region were quantified by image analysis. Proteolysis of crystallins was detected by SDS-PAGE. The amount of SJA6017 taken up by the lens was detected with a column switching HPLC system. RESULTS Nuclear cataracts were visible in 31% of the animals receiving only selenite, while the frequency of nuclear cataract in the Se+SJA6017 group was reduced to only 16%. This effect of SJA6017 was confirmed by densitometric analysis as a reduction in the density of the nucleus. Similar proteolytic changes of crystallins occurred at all stages of selenite cataract formation. The amount of SJA6017 in the lens was detected at the level of 0.03 microM. CONCLUSIONS Systemic SJA6017 was taken up by the lens, and SJA6017 ameliorated in vivo selenite cataract formation. These studies are important because they partially validate the biochemical rationale for developing non-surgical, drug treatments for cataract prevention in man.
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Affiliation(s)
- Y Tamada
- Research Laboratory, Senju Pharmaceutical Co. Ltd., 1-5-4 Murotani, Nishi-ku, Kobe 651-2241, Japan
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Tamada Y, Nakaoka Y, Nishimori K, Doi A, Kumaki T, Uemura N, Tanaka K, Makino SI, Sameshima T, Akiba M, Nakazawa M, Uchida I. Molecular typing and epidemiological study of Salmonella enterica serotype Typhimurium isolates from cattle by fluorescent amplified-fragment length polymorphism fingerprinting and pulsed-field gel electrophoresis. J Clin Microbiol 2001; 39:1057-66. [PMID: 11230427 PMCID: PMC87873 DOI: 10.1128/jcm.39.3.1057-1066.2001] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [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: 11/20/2022] Open
Abstract
One hundred twenty Salmonella enterica serotype Typhimurium strains, including 103 isolates from cattle gathered between 1977 and 1999 in the prefecture located on the northern-most island of Japan, were analyzed by using fluorescent amplified-fragment length polymorphism (FAFLP) and pulsed-field gel electrophoresis (PFGE) to examine the genotypic basis of the epidemic. Among these strains, there were 17 FAFLP profiles that formed four distinct clusters (A, B, C, and D). Isolates that belonged to cluster A have become increasingly common since 1992 with the increase of bovine salmonellosis caused by serotype Typhimurium. PFGE resolved 25 banding patterns that formed three distinct clusters (I, II, and III). All the isolates that belonged to FAFLP cluster A, in which all the strains of definitive phage type 104 examined were included, were grouped into PFGE cluster I. Taken together, these results indicate that clonal exchange of serotype Typhimurium has taken place since 1992, and they show a remarkable degree of homogeneity at a molecular level among contemporary isolates from cattle in this region. Moreover, we have sequenced two kinds of FAFLP markers, 142-bp and 132-bp fragments, which were identified as a polymorphic marker of strains that belonged to clusters A and C, respectively. The sequence of the 142-bp fragment shows homology with a segment of P22 phage, and that of the 132-bp fragment shows homology with a segment of traG, which is an F plasmid conjugation gene. FAFLP is apparently as well suited for epidemiological typing of serotype Typhimurium as is PFGE, and FAFLP can provide a source of molecular markers useful for studies of genetic variation in natural populations of serotype Typhimurium.
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Affiliation(s)
- Y Tamada
- Nemuro Livestock Hygiene Service Center, Betsukaimidorimachi, Betsukai, Notsukegun, 086-0214, Japan
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Tamada Y, Taniguchi T, Murase H, Yamamoto T, Kitazawa Y. Intraocular pressure-lowering efficacy of latanoprost in patients with normal-tension glaucoma or primary open-angle glaucoma. J Ocul Pharmacol Ther 2001; 17:19-25. [PMID: 11322634 DOI: 10.1089/108076801750125612] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 10/16/2022] Open
Abstract
We investigated the intraocular pressure (IOP)-lowering potential of latanoprost in patients with normal-tension glaucoma (NTG) or primary open-angle glaucoma (POAG). This prospective study included 59 NTG and 20 POAG patients treated with the following four dosing regimens of latanoprost: patients on no previous medication received latanoprost as initial therapy (Group 1, n=31), patients on beta-blocker therapy received latanoprost as adjunctive therapy (Group II, n=9), patients on unoprostone monotherapy were switched to latanoprost monotherapy (Group III, n=14), and patients previously on dual therapy with isopropyl unoprostone and beta-blocker were switched to a combined treatment of latanoprost and beta-blocker (Group IV, n=25). IOP significantly decreased 8 weeks after initiation of latanoprost therapy by 19.9% in Group I, 20.5% in Group II, 16.6% in Group III, and 12.2% in Group IV. In Groups I and II, there was a significant positive correlation between the magnitude of IOP reduction induced by latanoprost and the IOP level before latanoprost therapy. The IOP level before latanoprost therapy is a contributing factor in the IOP-lowering efficacy of latanoprost. Latanoprost is more effective in lowering IOP than isopropyl unoprostone.
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Affiliation(s)
- Y Tamada
- Department of Ophthalmology, Gifu University School of Medicine, Gifu-shi, Japan
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