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Cheng BH, Ho PS, Hsu CC, Chen FL, Chen MA, Kabasawa Y, Huang HL. Effectiveness of the lay health advisor program on oral function and quality of life in aboriginal older adults: A randomized controlled trial. J Oral Rehabil 2024; 51:840-850. [PMID: 38186265 DOI: 10.1111/joor.13649] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 07/23/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Aboriginal older adults residing in remote areas have poor oral function due to inadequate access to healthcare services. Lay health advisor (LHA) strategies can fill capacity shortages of healthcare professionals in rural communities and increase population acceptance of health care or healthy behaviours. OBJECTIVE(S) To evaluate the effectiveness the LHA program on oral function and oral health-related quality of life (OHRQoL) among older adults in aboriginal community. METHODS Participants were randomly assigned to an experimental group (EG; n = 122) and a control group (CG; n = 118). All participants performed oral exercises, and the EG received additional one-on-one 30-min lessons by an LHA over 4 weeks. Data were collected through face-to-face interview and oral examination. The generalized estimating equation model was used to analyse changes in outcomes over time. RESULTS The EG exhibited significantly greater improvement in swallowing (β = .63) at the 6-month follow-up and in masticatory performance (β = .52) and pronunciation of the syllable/pa/ (β = 2.65) at the 2-week follow-up than the CG did. The EG had a significantly lower plaque control record (β = -.14) and plaque index (β = -.30) at the 3-month follow-up than the CG did. Moreover, the OHRQoL was significantly increased at 6-months follow-up in the EG (p = .010). CONCLUSION The LHA program had positive effects on chewing, swallowing and plaque control in aboriginal older adults. LHA group also experienced positive long-term effect on OHRQoL after intervention.
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Affiliation(s)
- Bo-Han Cheng
- Department of Oral Hygiene, College of Jenteh Junior College of Medicine, Nursing and Management, Miaoli County, Taiwan
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Shan Ho
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Cheng Hsu
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli County, Taiwan
- Center for Geriatrics and Welfare Research, National Health Research Institutes, Miaoli County, Taiwan
| | - Fu-Li Chen
- Department of Public Health, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Ming-An Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Faculty of Dentistry, School of Oral Health Care Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hsiao-Ling Huang
- Department of Oral Hygiene, College of Jenteh Junior College of Medicine, Nursing and Management, Miaoli County, Taiwan
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Ito K, Tokura S, Takazawa I, Yoshida N, Nakanishi T, Akiyama K, Onuma Y, Adachi T, Harada H, Nojima H, Miura M, Yoshimura R, Kabasawa Y. Clinical investigation of use of Episil® oral solution in oral mucositis during radiotherapy for head and neck cancer. Heliyon 2023; 9:e15869. [PMID: 37260888 PMCID: PMC10227342 DOI: 10.1016/j.heliyon.2023.e15869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 04/19/2023] [Accepted: 04/25/2023] [Indexed: 06/02/2023] Open
Abstract
Objective Episil® is a bio adhesive barrier-forming oral liquid gel that has been used in recent years to relieve pain of oral mucositis (OM) with radiotherapy (RT) or chemoradiotherapy (CRT) in head and neck cancer (HNC) patients. We conducted a retrospective analysis of the clinical effects of Episil® on OM in these patients. Study design Between June 2018 and May 2020, 65 patients with HNC were treated with RT or CRT at our hospital. Results The median total RT dose was 50 Gy (range, 30-70 Gy) and the completion rate was 63/65 (97%). The median time to OM resolution was 47 (6-90) days and was significantly longer (53 [27-90] days) when the total RT dose was ≥51 Gy (P < 0.001). Episil® was used in 26 patients. Among them, 10 discontinued its use due to ineffective pain relief, usage difficulties, and taste intolerance. The median duration of use was 30 days and was significantly longer (34.5 days) (P < 0.001) when patients experienced pain relief at treatment initiation. Conclusion Although Episil® has been shown to be effective in improving the pain of OM caused by RT for HNC patients, and medical professionals are required to give careful attention to each patient.
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Affiliation(s)
- Kanade Ito
- Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Shiori Tokura
- Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Itsuki Takazawa
- Department of Oral Health Care Education, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Naomi Yoshida
- Department of Oral Health Care Education, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Tohko Nakanishi
- Department of Dental Hygiene, Tokyo Medical and Dental University Hospital, Japan
| | - Kikue Akiyama
- Department of Dental Hygiene, Tokyo Medical and Dental University Hospital, Japan
| | - Yuki Onuma
- Department of Dental Hygiene, Tokyo Medical and Dental University Hospital, Japan
| | - Toshiko Adachi
- Department of Dental Hygiene, Tokyo Medical and Dental University Hospital, Japan
| | - Hiroyuki Harada
- Department of Oral and Maxillofacial Surgical Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Hitomi Nojima
- Department of Dental Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Masahiko Miura
- Department of Dental Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Ryoichi Yoshimura
- Department of Radiation Therapeutics and Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Yuji Kabasawa
- Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
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3
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Lin YC, Lin PC, Lin PC, Lin CY, Kabasawa Y, Choi YK, Huang HL. Combining augmented and virtual reality simulation training to improve geriatric oral care performance in healthcare assistants: A randomized controlled trial. Digit Health 2023; 9:20552076231203891. [PMID: 37780060 PMCID: PMC10540595 DOI: 10.1177/20552076231203891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/08/2023] [Indexed: 10/03/2023] Open
Abstract
Objective Healthcare assistants (HCAs) are frontline caregivers for older adults. This study evaluated the effectiveness of combining augmented reality (AR) and virtual reality (VR) to implement oral healthcare simulation training for HCAs. Methods An experimental design was adopted. HCAs were recruited and randomly assigned to an AR/VR group (n = 40) or a control group (n = 40). The AR/VR group received 2.5 h of AR/VR training. Participants were trained on the Bass brushing technique through AR and on scenario-based oral care procedures for various physical and oral health conditions in older adults through VR. A self-administered questionnaire was employed to collect data before and after the training. Generalized estimating equations were used to analyze the differences between pretest and posttest results. Results After the training, the HCAs in the AR/VR group achieved a significantly greater increase in their level of oral care-related knowledge (β = 2.55, effect size [ES] = 1.62), self-efficacy (β = 4.23, ES = 0.75), and behavioral intention (β = 2.10, ES = 0.55) relative to the control group. Conclusion This study revealed that the application of an AR/VR simulation system can effectively improve the geriatric oral care performance of HCAs.
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Affiliation(s)
- Yi-Ching Lin
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung
- Department of Oral Hygiene, Shu-Zen Junior College of Medicine and Management, Kaohsiung
| | - Pei-Chen Lin
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung
| | - Pei-Chao Lin
- College of Nursing, Kaohsiung Medical University, Kaohsiung
- Center for Long-Term Care Research, Kaohsiung Medical University, Kaohsiung
| | - Cheng-Yu Lin
- Department of Radio, TV and Film, Shih Hsin University, Taipei
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Faculty of Dentistry, School of Oral Health Care Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yong-Keum Choi
- Department of Oral Hygiene, Division of Health Sciences, Sun Moon University, Asan-si, Republic of Korea
| | - Hsiao-Ling Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung
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Matsuda Y, Mizuno R, Miyajima S, Arakawa S, Kabasawa Y. A Case of Oral Health Management for a Patient with Extensive Ulceration of the Oral Mucosa Due to Herpes Zoster. Healthcare (Basel) 2022; 10:healthcare10112249. [PMID: 36360588 PMCID: PMC9690146 DOI: 10.3390/healthcare10112249] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Oral ulcers caused by herpes zoster virus infection are commonly encountered in daily clinical practice. However, in rare cases, sepsis or viremia can occur with serious outcomes; hence, these must be managed effectively. Here, we report a case of a patient with extensive ulceration caused by varicella zoster virus infection. Antiviral treatment was started early, and oral health management was started simultaneously, with oral hygiene instructions for pain control. As a result, the patient was able to resume oral food intake and was discharged from the hospital within a week. This case suggested that oral health management comprising supportive care, with the assistance of dentists and dental hygienists, as well as antiviral therapy, are important in the treatment of oral ulcers associated with herpes zoster virus infection.
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Affiliation(s)
- Yuhei Matsuda
- Tokyo Medical and Dental University Hospital, Oral Health Center, Tokyo 113-8501, Japan
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8501, Japan
- Correspondence: ; Tel.: +81-3-5803-4649
| | - Ruriko Mizuno
- Tokyo Medical and Dental University Hospital, Oral Health Center, Tokyo 113-8501, Japan
| | - Saki Miyajima
- Tokyo Medical and Dental University Hospital, Oral Health Center, Tokyo 113-8501, Japan
| | - Shinichi Arakawa
- Tokyo Medical and Dental University Hospital, Oral Health Center, Tokyo 113-8501, Japan
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8501, Japan
| | - Yuji Kabasawa
- Tokyo Medical and Dental University Hospital, Oral Health Center, Tokyo 113-8501, Japan
- Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
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5
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Chen MA, Liu CK, Yang YH, Huang ST, Yen CW, Kabasawa Y, Huang HL. Clinical-based oral rehabilitation programme improved the oral diadochokinesis and swallowing function of older patients with dementia: A randomized controlled trial. J Oral Rehabil 2022; 49:1163-1172. [PMID: 36152018 DOI: 10.1111/joor.13375] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 07/09/2022] [Accepted: 09/13/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of a clinical-based oral function intervention on oral function and care behaviours in older patients with mild dementia. METHOD Participants were randomly assigned to the experimental group (EG) and control group (CG). Both groups received a leaflet on oral health-related knowledge, and the EG also received an oral function intervention, which was a brief one-on-one lesson concerning oral exercise and preventive oral care. Oral exercise included turning the head, pouting lips, bulging cheeks, stretching tongue, articulation exercise, and salivary gland massages. A reminder phone call was made every 2 weeks. Perceived xerostomia and dysphagia, plaque index (PI), Winkel tongue-coating index (WTCI), repetitive saliva-swallowing test (RSST), oral diadochokinesis (DDK), and oral care behaviours were recorded at baseline and at 3-month follow up. Generalized Estimating Equations (GEE) were used to analyze the indicated effects. RESULTS The EG(n=59) exhibited greater improvement to the CG(n=55) in RSST [β= 0.7; effect size (ES) = 0.45], the syllables /pa/ (β = 3.1; ES = 0.37) and /ka/ (β = 2.7; ES = 0.40) in oral DDK, PI (β = -0.2; ES = 0.52), and WTCI (β = -0.8; ES = 0.38). Moreover, the EG exhibited better preventive behaviours in regular dental visits [adjusted odds ratio (aOR) = 2.2], daily mouth cleaning frequency (aOR = 1.6), and mouth cleaning before sleep (aOR = 1.3). CONCLUSION The brief clinical-based intervention was effective in improving the swallowing function, oral DDK, and plaque control of older patients with mild dementia at 3-month follow-up.
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Affiliation(s)
- Ming-An Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ching-Kuan Liu
- Institute of Precision Medicine, National Sun Yat-sen University, Kaohsiung, Taiwan.,Department of Neurology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Yuan-Han Yang
- Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Neurology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan.,School of Post-Baccalaureate Medicine, Colleague of Medicine, Kaohsiung. Medical University, Kaohsiung, Taiwan
| | - Shun-Te Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Pediatric and Special Needs Dentistry, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Cheng-Wei Yen
- Division of Pediatric and Special Needs Dentistry, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Faculty of Dentistry, School of Oral Health Care Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hsiao-Ling Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Aida J, Takeuchi K, Furuta M, Ito K, Kabasawa Y, Tsakos G. Burden of Oral Diseases and Access to Oral Care in an Ageing Society. Int Dent J 2022; 72:S5-S11. [PMID: 36031325 PMCID: PMC9437805 DOI: 10.1016/j.identj.2022.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/05/2022] [Accepted: 06/17/2022] [Indexed: 12/03/2022] Open
Abstract
Objective The total years lived with disability among older people, and the concomitant burden of tooth loss in ageing societies have increased. This study is an overview of the burden of oral diseases and access to oral care in an ageing society. Methods We selected key issues related to the burden of oral diseases and access to oral care and reviewed the relevant literature. Results The rising number of older people with teeth increases their oral health care needs. To improve access to oral care, affordability of care is a great concern with respect to universal health coverage. In addition, accessibility is a crucial issue, particularly for vulnerable older adults. To improve oral care access, attempts to integrate oral health care into general care are being made in ageing countries. For this purpose, provision of professional oral care at home through domiciliary visits and provision of daily oral health care by non-dental professional caregivers are important. Oral health care for older people reduces general diseases such as pneumonia and malnutrition, which in turn could reduce further healthcare costs. Conclusions To address the growing burden of oral care in ageing societies, special provision of oral health care to vulnerable older people, and integration of oral care with primary care will be required.
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Affiliation(s)
- Jun Aida
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Kenji Takeuchi
- Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan; Division of Regional Community Development, Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Michiko Furuta
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Kanade Ito
- Department of Oral Care for Systemic Health Support, Health Sciences and Biomedical Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kabasawa
- Department of Oral Care for Systemic Health Support, Health Sciences and Biomedical Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Georgios Tsakos
- Department of Epidemiology and Public Health, University College London, London, United Kingdom
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Shen KL, Huang CL, Lin YC, Du JK, Chen FL, Kabasawa Y, Chen CC, Huang HL. Effects of Artificial Intelligence (AI)-Assisted Dental Monitoring Intervention in Patients with Periodontitis: A Randomized Controlled Trial. J Clin Periodontol 2022; 49:988-998. [PMID: 35713224 DOI: 10.1111/jcpe.13675] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
Abstract
AIM To evaluate the effects of an at-home AI-assisted dental monitoring application on treatment outcomes in patients with periodontitis. MATERIALS AND METHODS Participants with periodontitis were recruited and randomly assigned into an AI (AI; n = 16), AI and human counseling (AIHC; n = 17), or control (CG; n = 20) group. All participants received nonsurgical periodontal treatment. We employed an AI-assisted tool called DENTAL MONITORING® (DM) intervention, a new technological AI monitoring product that utilizes smartphone cameras for intraoral scanning and assessment. Patients in the AI and AIHC groups respectively received additional (a) DM or (b) DM with real-person counseling over three months. Periodontal parameters were collected at baseline and follow-ups. A mixed-design model analyzed the follow-up effects over time. RESULTS The AI and AIHC groups respectively exhibited greater improvement in probing pocket depth [Mean diff = -0.9±0.4 and -1.4±0.3, effect size (ES) = 0.76 and 1.98], clinical attachment level (Mean diff = -0.8±0.3 and -1.4±0.3, ES = 0.84 and 1.77) and plaque index (Mean diff = -0.5±0.2 and -0.7±0.2, ES = 0.93 and 1.81) at 3-month follow-up than the CG did. The AIHC group had a greater reduction in probing pocket depth (ES = 0.46) and clinical attachment level (ES = 0.64) at the 3-month follow-up compared with the AI group. CONCLUSION Using AI monitoring at home had a positive effect on treatment outcomes for patients with periodontitis. Patients with AI-assisted health counseling exhibited better treatment outcomes than did patients who used AI monitoring alone. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kang-Ling Shen
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Chiung-Lin Huang
- Division of Periodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan
| | - Ying-Chun Lin
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan.,Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan
| | - Je-Kang Du
- Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan.,School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan.,Division of Prosthodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan
| | - Fu-Li Chen
- Department of Public Health, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Faculty of Dentistry, School of Oral Health Care Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chih-Chang Chen
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Hsiao-Ling Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
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Furuya J, Suzuki H, Hidaka R, Matsubara C, Motomatsu Y, Kabasawa Y, Tohara H, Sato Y, Miyake S, Minakuchi S. Association between oral health and advisability of oral feeding in advanced cancer patients receiving palliative care: a cross-sectional study. Support Care Cancer 2022; 30:5779-5788. [PMID: 35344101 PMCID: PMC9135851 DOI: 10.1007/s00520-022-06984-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/11/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Maintenance of oral feeding is important in terms of maintaining and improving the quality of life in terminal cancer patients receiving palliative care. Although adequate oral health status is essential for oral feeding in hospitalized patients, the relationship between oral health and oral feeding in patients receiving palliative care remains unclear. This cross-sectional study aimed to examine how the general condition and oral health status of these patients relate to decisions regarding their nutritional intake methods. METHODS This retrospective cross-sectional study included 103 terminal cancer patients (59 men and 44 women; mean age, 73.8 ± 10.9 years) who received palliative care between April 2017 and August 2019. The nutritional method was assessed using the Functional Oral Intake Scale (FOIS). We assessed two types of nutritional methods: (1) the method advised by the attending physician until the initial dental examination (FOIS-I) and (2) the recommended method based on consultation with a palliative care doctor and dentist after the initial oral examination (FOIS-R). Furthermore, the participants' basic information and Dysphagia Severity Scale (DSS) and Oral Health Assessment Tool (OHAT) scores were assessed. RESULTS There was a divergence between FOIS-I and FOIS-R. FOIS-R was significantly higher than FOIS-I (p < 0.001). Multiple regression analysis revealed that the time until death, DSS score, and OHAT score had a significant impact on determining the food form for oral feeding. CONCLUSIONS Appropriate oral health assessment is important in determining the food form and indication for oral feeding among patients receiving palliative care.
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Affiliation(s)
- Junichi Furuya
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan.,Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Hiroyuki Suzuki
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Rena Hidaka
- Department of Oral Health Sciences for Community Welfare, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Chiaki Matsubara
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yuko Motomatsu
- Department of Nursing, Tokyo Medical and Dental University Hospital, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yuji Kabasawa
- Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Haruka Tohara
- Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yuji Sato
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Satoshi Miyake
- Center for Innovative Cancer Treatment, Tokyo Medical and Dental University Hospital, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Shunsuke Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
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9
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Lin YC, Du JK, Lin PC, Kabasawa Y, Lin PL, Hsiao SY, Huang HL. Association between the dental occlusion and perceived ability to eat foods of Taiwanese older adults. J Oral Rehabil 2021; 48:817-826. [PMID: 33624362 DOI: 10.1111/joor.13160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/04/2021] [Accepted: 02/21/2021] [Indexed: 12/11/2022]
Abstract
Tooth loss is a common problem among older adults that affects masticatory function (MF) and food selection. Financial burden is a reason that some older adults in Taiwan with this condition forgo dental restoration. To identify the number of posterior occlusal support areas (POSAs) associated with MF. Large-scale cross-sectional study included 1100 community-dwelling participants of Taiwan aged ≥65 years. Participants completed dental examination and questionnaires through personal interviews. Masticatory performance was evaluated using a colour-changeable chewing gum. Masticatory ability was evaluated on the basis of how many of 14 common foods the participants were able to eat. Participants were grouped into 10 categories (A1-A3, B1-B4 and C1-C3) according to the Eichner index (EI) of posterior occlusal contacts. Multivariable regression models were used to analyse the association between the EI groups and MF. More than 80% of the participants with two or more POSAs (those in groups A1-B2) could easily eat various foods. Compared with those in groups A1-B2, those in groups in B3, B4, C1, C2 and C3 exhibited a significantly different masticatory performance (all P < .001) and significantly higher difficulty in eating fruits and vegetables. A dose-response effect between POSAs and perceived masticatory ability to eat fruits and vegetables was observed (P < .05 for both trends). Preservation of at least two POSAs is essential for MF. Older adults with tooth loss can undergo the restoration of two POSAs to improve MF and increase food intake.
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Affiliation(s)
- Ying-Chun Lin
- Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Je-Kang Du
- Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Prosthodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Pei-Chen Lin
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Faculty of Dentistry, School of Oral Health Care Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Pi-Li Lin
- Department of Nursing, Fooyin University, Kaohsiung, Taiwan
| | - Szu-Yu Hsiao
- Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Pediatric and Special Needs, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Hsiao-Ling Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Suga T, Tu TTH, Takenoshita M, Higashihori N, Kabasawa Y, Ono T, Moriyama K, Toyofuku A. Psychosocial indication for orthognathic surgery in patients with psychiatric comorbidities. Psychiatry Clin Neurosci 2020; 74:621-623. [PMID: 32738002 DOI: 10.1111/pcn.13125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/17/2020] [Accepted: 07/27/2020] [Indexed: 12/01/2022]
Affiliation(s)
- Takayuki Suga
- Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Trang Thi Huyen Tu
- Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Miho Takenoshita
- Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Norihisa Higashihori
- Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kabasawa
- Department of Oral Care for Systemic Health Support, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takashi Ono
- Department of Orthodontic Science, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiji Moriyama
- Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akira Toyofuku
- Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Kagifuku Y, Tohara H, Wakasugi Y, Susa C, Nakane A, Toyoshima M, Nakakuki K, Kabasawa Y, Harada H, Minakuchi S. What Factors Affect Changes in Body Composition and Swallowing Function in Patients Hospitalized for Oral Cancer Surgery? Clin Interv Aging 2020; 15:1-7. [PMID: 32021128 PMCID: PMC6954079 DOI: 10.2147/cia.s235170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/11/2019] [Indexed: 12/24/2022] Open
Abstract
PURPOSE There are few studies about sarcopenia before and after surgery for oral cancer. Therefore, we examined body composition during hospitalization and factors affecting weight loss, skeletal muscle mass index (SMI) reduction, and swallowing function at discharge in this patient group. PATIENTS AND METHODS A prospective survey was conducted at Tokyo Medical and Dental University Dental Hospital for patients who underwent primary surgery for oral cancer and reconstruction using free flaps. We compared body weight, SMI, grip strength, and walking speed at admission and discharge. We also examined factors affecting weight loss and SMI reduction and the functional oral intake scale (FOIS) score at discharge. RESULTS There were 26 patients that we could survey during the period. As a result of Wilcoxon's signed-rank test, body weight, SMI, and grip strength were significantly reduced during hospitalization, but no reduction was noted for sarcopenia. As a result of multiple regression analysis, postoperative chemoradiotherapy was a risk factor for weight loss, reduced SMI, and low FOIS score at discharge. CONCLUSION Postoperative chemoradiotherapy is a risk factor for weight loss, muscle mass loss, and dysphagia at discharge, and chemoradiotherapy may affect rather than an invasion of surgery. After surgery, besides follow-ups for cancer, oral cancer patients should be followed up to assess dysphagia, undernutrition, and sarcopenia.
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Affiliation(s)
- Yuko Kagifuku
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Haruka Tohara
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoko Wakasugi
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chiaki Susa
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ayako Nakane
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mizue Toyoshima
- Section of Nutrition Management, Tokyo Medical and Dental University Dental Hospital, Tokyo, Japan
| | - Koichi Nakakuki
- Department of Maxillofacial Surgery, Division of Maxillofacial and Neck Reconstruction, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kabasawa
- Department of Oral Care for Systemic Health Support, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyuki Harada
- Department of Oral and Maxillofacial Surgery, Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shunsuke Minakuchi
- Department of Gerontology and Gerodontology, Division of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Takahara N, Nakagawa S, Sumikura K, Kabasawa Y, Sakamoto I, Harada H. Association of Temporomandibular Joint Pain According to Magnetic Resonance Imaging Findings in Temporomandibular Disorder Patients. J Oral Maxillofac Surg 2017; 75:1848-1855. [DOI: 10.1016/j.joms.2017.03.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 01/23/2023]
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13
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Hobo K, Noritake K, Sunaga M, Miyoshi T, Cao R, Nitta H, Kabasawa Y, Kinoshita A. Effects of an interactive simulation material for clinical dentistry on knowledge acquisition and memory retention in dental residents. J Med Dent Sci 2017; 64:43-52. [PMID: 29311530 DOI: 10.11480/jmds.640401] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
With the development of technology, the knowledge and skills needed to become a dentist are increasing. Computer-assisted simulation learning materials have been utilized for dental education because of their high efficiency and efficacy. However, it is not well understood which material design is strongly associated with an education effect. We therefore investigated the effects of interactivity with learning materials on learners' knowledge acquisition, memory retention, and anxiety reduction. Learning effects and degree of anxiety were compared between dental residents who learned using an interactive-type material, which required decision making and provided feedback (Group I, n=26), and those who learned using a display-type material, which merely displayed the appropriate action on a computer screen (Group D, n=23). Quiz scores immediately after learning and 3 weeks later were significantly higher in Group I than those in Group D (p<0.001 and 0.016, espectively). Regarding anxiety, state anxiety after learning with interactive material was significantly decreased in Group I (p<0.05), whereas no significant change was observed in Group D. Our results suggest that interactivity with computerassisted simulation materials is more effective for knowledge acquisition, memory retention, and anxiety reduction.
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Affiliation(s)
- Koki Hobo
- Department of Educational Media Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Kanako Noritake
- Oral Diagnosis and General Dentistry, University Hospital of Dentistry, Tokyo Medical and Dental University
- The two corresponding authors contributed equally to this work
| | - Masayo Sunaga
- Department of Educational Media Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tomoe Miyoshi
- Department of Educational Media Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | | | - Hiroshi Nitta
- Department of Behavioral Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yuji Kabasawa
- Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Atsuhiro Kinoshita
- Department of Educational Media Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
- The two corresponding authors contributed equally to this work
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Takahara N, Kabasawa Y, Sato M, Tetsumura A, Kurabayashi T, Omura K. MRI changes in the temporomandibular joint following mandibular setback surgery using sagittal split ramus osteotomy with rigid fixation. Cranio 2016; 35:38-45. [PMID: 27077250 DOI: 10.1080/08869634.2016.1143167] [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] [Indexed: 10/22/2022]
Abstract
OBJECTIVES This study examined the changes in temporomandibular joint dysfunction (TMD) symptoms and investigated the variations in the disc position, disc and condylar morphology following sagittal split ramus osteotomy (SSRO) with rigid fixation in patients with mandibular prognathism. Furthermore, the authors examined the correlation between mandibular setback and TMD symptoms. METHODS The study included 24 Japanese patients with jaw deformities who were treated using bilateral SSRO and Le Fort I osteotomy. The clinical and magnetic resonance imaging findings in the temporomandibular joint were evaluated preoperatively and at three and six months postoperatively. RESULTS The preoperative TMD symptoms were significantly associated with the prevalence of TMD symptoms at six months postoperatively. Anterior disc displacement improved in four joints with slight displacement and with no morphological change. There were no postoperative changes in condylar morphology. There was no significant correlation between mandibular setback and the postoperative TMD symptoms. CONCLUSION Postoperative TMD symptoms may be influenced mainly by preoperative TMD symptoms rather than mandibular setback using SSRO with rigid fixation. Therefore, patients with TMD symptoms require physical examination and MRI for appropriate diagnosis preoperatively.
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Affiliation(s)
- Namiaki Takahara
- a Department of Oral and Maxillofacial Surgery , Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo , Japan
| | - Yuji Kabasawa
- a Department of Oral and Maxillofacial Surgery , Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo , Japan
| | - Masaru Sato
- b Department of Dentistry and Oral Surgery , Tsuchiura Kyodo General Hospital , Ibaraki , Japan
| | - Akemi Tetsumura
- c Department of Oral and Maxillofacial Radiology , Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo , Japan
| | - Tohru Kurabayashi
- c Department of Oral and Maxillofacial Radiology , Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo , Japan
| | - Ken Omura
- d Department of Dentistry and Oral Surgery , Tokyo General Hospital , Tokyo , Japan
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Mochizuki Y, Harada H, Sakamoto K, Kayamori K, Nakamura S, Ikuta M, Kabasawa Y, Marukawa E, Shimamoto H, Tushima F, Omura K. Malignant Lymphoma with Initial Symptoms in the Mandibular Region. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jct.2015.67060] [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: 11/20/2022]
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16
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Shimada Y, Katsube KI, Kabasawa Y, Morita KI, Omura K, Yamaguchi A, Sakamoto K. Integrated genotypic analysis of hedgehog-related genes identifies subgroups of keratocystic odontogenic tumor with distinct clinicopathological features. PLoS One 2013; 8:e70995. [PMID: 23951062 PMCID: PMC3737235 DOI: 10.1371/journal.pone.0070995] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Accepted: 06/25/2013] [Indexed: 01/01/2023] Open
Abstract
Keratocystic odontogenic tumor (KCOT) arises as part of Gorlin syndrome (GS) or as a sporadic lesion. Gene mutations and loss of heterozygosity (LOH) of the hedgehog receptor PTCH1 plays an essential role in the pathogenesis of KCOT. However, some KCOT cases lack evidence for gene alteration of PTCH1, suggesting that other genes in the hedgehog pathway may be affected. PTCH2 and SUFU participate in the occurrence of GS-associated tumors, but their roles in KCOT development are unknown. To elucidate the roles of these genes, we enrolled 36 KCOT patients in a study to sequence their entire coding regions of PTCH1, PTCH2 and SUFU. LOH and immunohistochemical expression of these genes, as well as the downstream targets of hedgehog signaling, were examined using surgically-excised KCOT tissues. PTCH1 mutations, including four novel ones, were found in 9 hereditary KCOT patients, but not in sporadic KCOT patients. A pathogenic mutation of PTCH2 or SUFU was not found in any patients. LOH at PTCH1 and SUFU loci correlated with the presence of epithelial budding. KCOT harboring a germline mutation (Type 1) showed nuclear localization of GLI2 and frequent histological findings such as budding and epithelial islands, as well as the highest recurrence rate. KCOT with LOH but without a germline mutation (Type 2) less frequently showed these histological features, and the recurrence rate was lower. KCOT with neither germline mutation nor LOH (Type 3) consisted of two subgroups, Type 3A and 3B, which were characterized by nuclear and cytoplasmic GLI2 localization, respectively. Type 3B rarely exhibited budding and recurrence, behaving as the most amicable entity. The expression patterns of CCND1 and BCL2 tended to correlate with these subgroups. Our data indicates a significant role of PTCH1 and SUFU in the pathogenesis of KCOT, and the genotype-oriented subgroups constitute entities with different potential aggressiveness.
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Affiliation(s)
- Yasuyuki Shimada
- Section of Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Oral Pathology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Global Center of Excellence Program, International Research Center for Molecular Science in Tooth and Bone Diseases, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ken-ichi Katsube
- Oral Pathology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kabasawa
- Section of Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kei-ichi Morita
- Department of Advanced Molecular Diagnosis and Maxillofacial Surgery, Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ken Omura
- Section of Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Global Center of Excellence Program, International Research Center for Molecular Science in Tooth and Bone Diseases, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Advanced Molecular Diagnosis and Maxillofacial Surgery, Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akira Yamaguchi
- Oral Pathology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Global Center of Excellence Program, International Research Center for Molecular Science in Tooth and Bone Diseases, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail: (AY); (KS)
| | - Kei Sakamoto
- Oral Pathology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail: (AY); (KS)
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Kabasawa Y, Eda T, Hu J, Katayama I, Takeda J, Kitajima M, Katagiri T, Sasagawa T, Nakamura KG. Ultrafast quasiparticle dynamics of FeTe0.75Se0.25superconductor. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134103009] [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: 11/14/2022] Open
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Shimada Y, Morita KI, Kabasawa Y, Taguchi T, Omura K. Clinical manifestations and treatment for keratocystic odontogenic tumors associated with nevoid basal cell carcinoma syndrome: a study in 25 Japanese patients. J Oral Pathol Med 2012; 42:275-80. [DOI: 10.1111/j.1600-0714.2012.01202.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/02/2012] [Indexed: 11/30/2022]
Affiliation(s)
| | - Kei-ichi Morita
- Department of Advanced Molecular Diagnosis and Maxillofacial Surgery; Hard Tissue Genome Research Center, Tokyo Medical and Dental University; Tokyo; Japan
| | - Yuji Kabasawa
- Oral and Maxillofacial Surgery, Division of Oral Health Sciences, Department of Oral Restitution; Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University; Tokyo; Japan
| | - Takahide Taguchi
- Oral and Maxillofacial Surgery, Division of Oral Health Sciences, Department of Oral Restitution; Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University; Tokyo; Japan
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Suzuki M, Hatsuse H, Nagao K, Takayama Y, Kameyama K, Kabasawa Y, Omura K, Yoshida M, Fujii K, Miyashita T. Selective haploinsufficiency of longer isoforms of PTCH1 protein can cause nevoid basal cell carcinoma syndrome. J Hum Genet 2012; 57:422-6. [PMID: 22572734 DOI: 10.1038/jhg.2012.45] [Citation(s) in RCA: 7] [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: 11/09/2022]
Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder characterized by developmental defects and tumorigenesis. The gene responsible for NBCCS is PTCH1. The PTCH1 gene has five alternatively used first exons resulting in the translation of three isoforms of the PTCH1 protein; that is, PTCHL, PTCHM and PTCHS. However, the biological significance of each isoform is unclear. Here we show an individual with NBCCS carrying a nonsense mutation in PTCH1 exon2, c.387G>A (p.W129X). As the mutation lay upstream of the ATG codon used for PTCHS translation, the mutant allele still expressed RNA isoforms that encode PTCHS. These results clearly demonstrate that a selective haploinsufficiency of longer isoforms of the PTCH1 protein, PTCHL and PTCHM, but not PTCHS is sufficient to cause NBCCS. Although mice selectively deficient in PTCHS isoforms are currently unavailable, this study sheds light on the complex in vivo roles of PTCH1 isoforms.
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Affiliation(s)
- Maiko Suzuki
- Department of Molecular Genetics, Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan
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Kabasawa Y, Nagumo K, Takeda Y, Kawashima N, Okada N, Omura K, Yamaguchi A, Katsube K. Amelogenin positive cells scattered in the interstitial component of odontogenic fibromas. J Clin Pathol 2008; 61:851-5. [PMID: 18344235 DOI: 10.1136/jcp.2008.056085] [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: 11/03/2022]
Abstract
BACKGROUND Odontogenic tumours are often biphasic, consisting of epithelial and interstitial components, with an origin that is not well understood. Odontogenic fibromas are rich in mesenchymal component, but also have many epithelial nests. AIMS To investigate the origin of this tumour by immunohistochemistry. METHODS The expression of several odontogenic and epithelial markers, including amelogenin, was investigated by immunofluorescent studies. RESULTS Immunohistochemical analysis showed that epithelial nests exhibited E-cadherin expression, but not amelogenin. Amelogenin positive cells were scattered in the fibrous tissue, which did not exhibit epithelial marker expression except for epithelial membrane antigen. In one case that had received a test biopsy before whole resection of tumour, amelogenin positive cells were distributed in the regenerating mucosal epithelium or subepithelial tissue. CONCLUSIONS Results indicate that amelogenin positive cells of odontogenic fibromas have an epithelial origin and may have the potential for epithelial mesenchymal transition, which has not to date been investigated in benign tumours.
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Affiliation(s)
- Y Kabasawa
- Oral and Maxillofacial Surgery, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan
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Sato M, Maruoka Y, Kunimori K, Imai H, Kabasawa Y, Ichinose S, Harada K, Omura K. Morphological and Immunohistochemical Changes in Muscle Tissue in Association With Mandibular Distraction Osteogenesis. J Oral Maxillofac Surg 2007; 65:1517-25. [PMID: 17656277 DOI: 10.1016/j.joms.2006.10.041] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Revised: 07/28/2006] [Accepted: 10/24/2006] [Indexed: 11/20/2022]
Abstract
PURPOSE Studies of changes in the surrounding soft tissue in association with distraction osteogenesis in the maxillofacial region, where various different kinds of tissue are tightly packed, are rare. In this study, we performed morphological and immunohistochemical investigations of muscle tissue during mandibular distraction osteogenesis. MATERIALS AND METHODS Japanese white rabbits were divided into 2 groups. In 1 group, the mandibular bone was distracted at a rate of 1 mm/day (DO group), whereas in the other group it was advanced by 10 mm all at once (O group). The cross-section of the anterior belly of the digastric muscle was examined using hematoxylin and eosin, periodic acid-Schiff (PAS), and proliferating cell nuclear antigen (PCNA) staining methods, as well as scanning electronmicroscopy (SEM). RESULTS In the DO group, the cross-section of muscle bundle revealed no remarkable changes. In PAS staining, type II fibers gradually disappeared with distraction, but eventually reappeared after a period of consolidation. In the SEM photographs, striation-like laminated structures were evident in the control and the 3-mm distraction, ambiguous in the 6-mm distraction, and not evident in the 10-mm distraction. In contrast, the structure appeared to be restored in the consolidation for 1 week thereafter. In the PCNA immunostaining, the numbers of PCNA-positive nuclei increased during periods of distraction, but subsequently tended to decrease gradually. CONCLUSIONS Although minute injuries were induced in muscle fibers in association with distraction osteogenesis, it is suggested that muscle fibers regenerate starting in the distraction period and thus can adapt to the environment.
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Affiliation(s)
- Masaru Sato
- Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
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Katsube K, Chuai ML, Liu YC, Kabasawa Y, Takagi M, Perbal B, Sakamoto K. The expression of chicken NOV, a member of the CCN gene family, in early stage development. Gene Expr Patterns 2007; 1:61-5. [PMID: 15018819 DOI: 10.1016/s1567-133x(01)00009-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2001] [Indexed: 11/20/2022]
Abstract
The nephroblastoma overexpressed gene, NOV, is a member of the CCN gene family. We investigated the NOV gene expression pattern in the chicken during early stage embryogenesis. Several embryonic structures showed a distinct expression pattern. The initial expression was detected in Hensen's node (Hamburger and Hamilton stage (HH) 5). The expression was noted in the presumptive notochord and floor plate forming cells. The expression on the left side was more elongated posteriorly, a type of left-right asymmetry. Chicken NOV gene expression in the forming notochord and floor plate was observed until HH 18. The expression was also detected in the ventral area of the mesencephalon and isthmus at HH 14-16.
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Affiliation(s)
- K Katsube
- Molecular Pathology, Graduate School of Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
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Shinomiya K, Kabasawa Y, Ito Y. Countercurrent Chromatographic Separation of Proteins by Cross-Axis Coil Planet Centrifuge: Choice of Polymer Phase Systems and Revolution Speed. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079808001255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K. Shinomiya
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi Chiba, 274, Japan
| | - Y. Kabasawa
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi Chiba, 274, Japan
| | - Y. Ito
- b Laboratory of Biophysical Chemistry National Heart, Lung, and Blood Institute National Institutes of Health , Building 10, Room 7N-322, Bethesda, MD, 20892
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Shinomiya K, Kabasawa Y, Ito Y. Enantiomeric Separation of Commercial D,L-Kynurenine with an Aqueous Two-Phase Solvent System by Cross-Axis Coil Planet Centrifuge. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079808001942] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K. Shinomiya
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi, Chiba, 274, Japan
| | - Y. Kabasawa
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi, Chiba, 274, Japan
| | - Y. Ito
- b Laboratory of Biophysical Chemistry , National Heart, Lung, and Blood Institute , National Institutes of Health Building 10, Room 7N-322, Bethesda, MD, 20892, USA
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Affiliation(s)
- K. Shinomiya
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi, Chiba, 274, Japan
| | - Y. Kabasawa
- a College of Pharmacy Nihon University , 7-7-1, Narashinodai, Funabashi-shi, Chiba, 274, Japan
| | - Y. Ito
- b Laboratory of Biophysical Chemistry , National Heart, Lung, and Blood Institute , National Institutes of Health Building 10, Room 7N-322, Bethesda, MD, 20892, USA
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Harada K, Sato M, Kabasawa Y, Maruoka Y, Omura K. Prognosis of the patients treated by two-jaw surgery without condylar repositioning appliance: Short-term results in case of facial asymmetry. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81279-2] [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: 11/24/2022]
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Kabasawa Y. [The expression pattern of the chick pleiotrophin and its possible role in early embryogenesis]. Kokubyo Gakkai Zasshi 2002; 69:215-23. [PMID: 12400177 DOI: 10.5357/koubyou.69.215] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
I investigated the expression pattern of the Pleiotrophin (PTN), a heparin-binding multifunctional protein, to investigate its role in early embryogenesis. The PTN expression dynamically changed during somitogenesis, which seemed to be affected by the interaction of axial (neural tube and notochord) and paraxial structures. In the middle stage (i.e. the hind limb bud level), coordinated expression between somite and neural tube was remarkable in the dorsal part. Separation experiments demonstrated that the PTN expression in dorsal somite depends on some factor secreted by the neural tube. The factor was not the PTN itself, since its forced expression in the neural tube did not affect its somite expression. Other secretory factors in the neural tube that are reported to affect somite development were also examined but failed to change the expression. On the contrary, forced expression of PTN in the neural tube enhanced only the Pax3 expression in somite. These results indicate the complexity of the PTN role in somitogenesis, which might possibly explain the phenotype of Pax3 mutant mouse, Sploch (Sp).
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Affiliation(s)
- Yuji Kabasawa
- Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
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Sakamoto K, Yamaguchi S, Ando R, Miyawaki A, Kabasawa Y, Takagi M, Li CL, Perbal B, Katsube KI. The nephroblastoma overexpressed gene (NOV/ccn3) protein associates with Notch1 extracellular domain and inhibits myoblast differentiation via Notch signaling pathway. J Biol Chem 2002; 277:29399-405. [PMID: 12050162 DOI: 10.1074/jbc.m203727200] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.0] [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: 12/11/2022] Open
Abstract
We demonstrate a novel interaction of the nephroblastoma overexpressed gene (NOV), a member of the CCN gene family, with the Notch signaling pathway. NOV associates with the epidermal growth factor-like repeats of Notch1 by the CT (C-terminal cysteine knot) domain. The promoters of HES1 and HES5, which are the downstream transducers of Notch signaling, were activated by NOV. Expressions of NOV and Notch1 were concomitant in the presomitic mesoderm and later in the myocytes and chondrocytes, suggesting their synergistic effects in mesenchymal cell differentiation. In C2/4 myogenic cells, elevated expression of NOV led to down-regulation of MyoD and myogenin, resulting in inhibition of myotube formation. These results indicate that NOV-Notch1 association exerts a positive effect on Notch signaling and consequently suppresses myogenesis.
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Affiliation(s)
- Kei Sakamoto
- Department of Molecular Pathology, Graduate School of Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
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29
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Shinomiya K, Kabasawa Y, Toida T, Imanari T, Ito Y. Separation of chondroitin sulfate and hyaluronic acid fragments by centrifugal precipitation chromatography. J Chromatogr A 2001; 922:365-9. [PMID: 11486884 DOI: 10.1016/s0021-9673(01)00959-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Centrifugal precipitation chromatography (CPC) was applied for the first time to the separation of fragments of chondroitin sulfate (ChS) and hyaluronic acid (HA). The separation was performed using a gradient elution system between ethanol and water since solubility of these biopolymers highly depends on the concentration of ethanol in aqueous solution. ChS and HA were each eluted into several peaks through a flow-through UV detector at 275 nm, despite they have almost no absorbance at this wavelength in an aqueous solution. The separation was also confirmed by redissolving the dried fraction in water and measuring the absorbance at 210 nm. These results suggest that the CPC system can detect small precipitates of these biopolymers by light scattering at 275 nm. The separated fragments of biopolymers are not easily characterized because no suitable analytical method is available for identification of these compounds. However, the overall results demonstrate that CPC may be a useful separation of biopolymers such as glycosaminoglycans which quantitatively produce precipitates in an organic solvent mixture.
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Affiliation(s)
- K Shinomiya
- Laboratory of Biophysical Chemistry, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1676, USA.
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30
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Harada H, Asano O, Hoshino Y, Yoshikawa S, Matsukura M, Kabasawa Y, Niijima J, Kotake Y, Watanabe N, Kawata T, Inoue T, Horizoe T, Yasuda N, Minami H, Nagata K, Murakami M, Nagaoka J, Kobayashi S, Tanaka I, Abe S. 2-Alkynyl-8-aryl-9-methyladenines as novel adenosine receptor antagonists: their synthesis and structure-activity relationships toward hepatic glucose production induced via agonism of the A(2B) receptor. J Med Chem 2001; 44:170-9. [PMID: 11170626 DOI: 10.1021/jm990499b] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.2] [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: 11/30/2022]
Abstract
Novel adenosine antagonists, 2-alkynyl-8-aryl-9-methyladenine derivatives, were synthesized as candidate hypoglycemic agents. These analogues were evaluated for inhibitory activity on N-ethylcarboxamidoadenosine (NECA)-induced glucose production in primary cultured rat hepatocytes. In general, aromatic moieties at the 8-position and alkynyl groups at the 2-position had significantly increased activity compared to unsubstituted compounds. The preferred substituents at the 8-position of adenine were the 2-furyl and 3-fluorophenyl groups. In modifying the alkynyl side chain, change of the ring size, cleavage of the ring, and removal of the hydroxyl group were well tolerated. The order of the stimulatory effects of adenosine agonists on rat hepatocytes was NECA > CPA > CGS21680, which is consistent with involvement of the A(2B) receptor. In Chinese hamster ovary cells stably transfected with human A(2B) receptor cDNA, one of the compounds potent in hepatocytes, 15o (IC(50) = 0.42 microM), antagonized NECA-induced stimulation of cyclic AMP production (IC(50) = 0.063 microM). This inhibitory effect was much more potent than those of FK453, KF17837, and L249313 which have been reported to be respectively A(1), A(2A), and A(3) selective antagonists. These findings agree very well with the result that, compared to 15o, these selective antagonists for each receptor subtype showed only marginal effects in rat hepatocytes. These results suggest that adenosine agonist-induced glucose production in rat hepatocytes is mediated through the A(2B) receptor. Furthermore, 15o showed hypoglycemic activity in an animal model of noninsulin-dependent diabetes mellitus, the KK-A(y) mice. It is possible that inhibition of hepatic glucose production via the A(2B) receptor could be at least one of the mechanisms by which 15o exerts its in vivo effects. Further elaboration of this group of compounds may afford novel antidiabetic agents.
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Affiliation(s)
- H Harada
- Tsukuba Research Laboratories, Eisai Company, Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
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31
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Watanabe N, Adachi H, Takase Y, Ozaki H, Matsukura M, Miyazaki K, Ishibashi K, Ishihara H, Kodama K, Nishino M, Kakiki M, Kabasawa Y. 4-(3-Chloro-4-methoxybenzyl)aminophthalazines: synthesis and inhibitory activity toward phosphodiesterase 5. J Med Chem 2000; 43:2523-9. [PMID: 10891111 DOI: 10.1021/jm9905054] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We synthesized various 4-(3-chloro-4-methoxybenzyl)aminophthalazines substituted at the 1- and 6-positions and evaluated their inhibitory activity toward phosphodiesterase 5 (PDE5) and their vasorelaxant activity in isolated porcine coronary arteries precontracted with prostaglandin F2alpha (10(-5) M). The preferred substituents at the 1-position of the phthalazine were 4-hydroxypiperidino, 4-hydroxymethylpiperidino, 4-(2-hydroxyethyl)piperidino, and 4-oxopiperidino. Among these compounds, [4-(3-chloro-4-methoxybenzyl)amino-1-(4-hydroxy)piperidino]-6-phthala zinecarbonitrile monohydrochloride (13) exhibited potent PDE5 inhibitory activity (IC(50) = 0.56 nM) with >1700-fold high selectivity over other PDE isozymes (PDE1-4). Compound 13 exhibited the most potent vasorelaxant action (EC(50) = 13 nM) in this series of compounds. Compound 13 reduced mean pulmonary arterial pressure by 29.9 +/- 3.1% when administered intravenously at 30 microg/kg to the chronically hypoxic rats and had an apparent oral bioavailability of about 19.5% in rats and was selected for further biological evaluation.
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Affiliation(s)
- N Watanabe
- Tsukuba Research Laboratories, Eisai Company, Ltd., Tsukuba, Ibaraki, Japan.
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Shinomiya K, Kabasawa Y, Ito Y. Effect of elution modes on protein separation by cross-axis coil planet centrifuge with two different types of coiled columns. Prep Biochem Biotechnol 1999; 29:139-50. [PMID: 10231893 DOI: 10.1080/10826069908544886] [Citation(s) in RCA: 15] [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: 10/22/2022]
Abstract
Effect of elution modes on protein separation was investigated using cross-axis coil planet centrifuge (cross-axis CPC) with two different types of coiled columns, i.e., eccentric coil and toroidal coil assemblies. Myoglobin and lysozyme were separated with an aqueous two-phase solvent system composed of 12.5% (w/w) polyethylene glycol 1000 and 12.5% (w/w) dibasic potassium phosphate. The substantial effect of elution modes was observed by the toroidal coil, while the negative result was given at the eccentric coil. Using the toroidal coil, higher peak resolution of proteins was attained at the tail to head elution mode. In the outward lower phase mobile elution mode, the satisfactory separation was obtained by both eccentric coil and toroidal coil assemblies. However, in the inward upper phase mobile elution mode, the toroidal coil produced a broad and asymmetric myoglobin peak. The analysis using polyacrylamide gel electrophoresis revealed that the toroidal coil partially separated the components originally present in the myoglobin sample. As the result, a modified equation was devised to express the peak resolution (Rs) using the lysozyme peak. The overall results indicated that the toroidal coil produced better partition efficiency than the eccentric coil under the optimized experimental condition including the direction of the Coriolis force acting on the mobile phase in the toroidal coil.
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Affiliation(s)
- K Shinomiya
- College of Pharmacy, Nihon University, Chiba, Japan
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33
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Okuda K, Murata M, Sugimoto M, Saito Y, Kabasawa Y, Yoshie H, Saku T, Hara K. TGF-beta1 influences early gingival wound healing in rats: an immunohistochemical evaluation of stromal remodelling by extracellular matrix molecules and PCNA. J Oral Pathol Med 1998; 27:463-9. [PMID: 9831957 DOI: 10.1111/j.1600-0714.1998.tb01913.x] [Citation(s) in RCA: 24] [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: 01/12/2023]
Abstract
The effect of topically applied transforming growth factor beta1 (TGF-beta1) on the rat gingival wound healing process after flap surgery was evaluated by immunohistochemistry for extracellular matrix molecules (ECM), such as tenascin, heparan sulfate proteoglycan (HSPG) and type IV collagen, and for proliferating cell nuclear antigen (PCNA) in fibroblasts. TGF-beta1 solution was applied to the surgical wound experimental sites. Two microg/microl were applied at the time of the operation, and 1 microg/microl at days 1 and 2 after surgery, with contralateral control sites receiving the vehicle alone. Periodontal tissues were histologically examined at 3 and 7 days post-surgery. Tenascin was found to be more strongly stained in the granulation tissue from experimental sites at 3 days post-surgery. At 7 days postsurgery, HSPG-positive areas in granulation tissue had become smaller and there was a prominent proliferation of PCNA-positive fibroblast-like cells and type IV collagen-positive blood vessels. These results suggest that TGF-beta1 applied to surgical wounds influences early proliferation of gingival fibroblast-like cells, the formation of blood vessels, and ECM remodelling. In conclusion, TGF-beta1 application appears to promote granulation tissue formation in periodontal wound healing.
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Affiliation(s)
- K Okuda
- Department of Periodontology, Niigata University School of Dentistry, Japan
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34
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Noma T, Yoshizawa I, Aoki K, Sugawara Y, Odajima H, Kabasawa Y, Matsui T, Yata J, Yamaguchi K, Mukouyama T, Baba M. Correlation between antigen-specific IL-2 response test and provocation test for egg allergy in atopic dermatitis. Clin Exp Allergy 1998; 28:1120-30. [PMID: 9761016 DOI: 10.1046/j.1365-2222.1998.00383.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The antigen-specific interleukin-2 response (AIR) test using lymphocytes is effective in searching for the antigen which causes allergic diseases and understanding their disease activity. OBJECTIVE AND METHODS The correlation between the raw egg oral provocation test and egg white antigen-specific interleukin-2 (IL-2) response test was investigated in 123 children with infantile atopic dermatitis and 13 children with bronchial asthma. RESULTS Among the 83 who showed positive reactions to provocation, 75 also reacted positively to the AIR test (sensitivity, 90.4%), while among the 53 children who showed negative responses to antigen provocation, 45 produced negative responses to the AIR test (specificity, 84.9%). The specificity of egg white IgE RAST score and skin-prick test are 88.7 and 81.3% which are comparable to that of the AIR test. However, their sensitivity was low (38.6 and 66.7%). In the patterns of symptom developed in the provocation AIR displayed late and delayed type allergic responses in addition to the immediate type which RAST reflected. The RAST-negative group composed of 98 patients included 51 (52.0%) who exhibited positive reactions to the provocation test. Among these 44 responded positively to the AIR test (86.3%). CONCLUSION The AIR test is effective for screening egg white antigen as part of the tests for antigens responsible for allergic diseases and as a test to ascertain the relevant antigens, and that the conditions that could not be diagnosed by RAST can be detected by the AIR test.
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Affiliation(s)
- T Noma
- Department of Paediatrics, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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35
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Watanabe N, Kabasawa Y, Takase Y, Matsukura M, Miyazaki K, Ishihara H, Kodama K, Adachi H. 4-Benzylamino-1-chloro-6-substituted phthalazines: synthesis and inhibitory activity toward phosphodiesterase 5. J Med Chem 1998; 41:3367-72. [PMID: 9719589 DOI: 10.1021/jm970815r] [Citation(s) in RCA: 178] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We synthesized various 4-benzylamino-1-chloro-6-substituted phthalazines (15) and 4-benzylamino-1-chloro-7-substituted phthalazines (16) and evaluated their inhibitory activity toward phosphodiesterase 5 (PDE5) purified from porcine platelets. The PDE5-inhibitory activities of 15 were greater than those of the isomers (16). The preferred substituent at the 4-position of phthalazine was a (3-chloro-4-methoxybenzyl)amino group, and those at the 6-position were cyano, nitro, and trifluoromethyl groups. Compounds 15a (IC50 = 4.8 nM), 15f (3.5 nM), and 15i (5.3 nM) were more potent inhibitors than E4021 (8.6 nM). Compounds 15a and 15f also showed vasorelaxant activity in isolated porcine coronary arteries precontracted with prostaglandin F2alpha (10(-5) M). The EC50 values for vasorelaxant action of 15a, 15f, and E4021 were 150, 160, and 980 nM, respectively. These results show that novel PDE5 inhibitors possessing a potent vasorelaxant effect may exist among phthalazine derivatives.
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Affiliation(s)
- N Watanabe
- Tsukuba Research Laboratories, Eisai Company, Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
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Abstract
To identify the target cells of transforming growth factor-beta (TGF-beta) in normal bone tissue, we examined TGF-beta type II receptor expression using immunohistochemistry, reverse transcription-polymerase chain reaction (RT-PCR), and in situ hybridization in young rat tibiae. In the epiphyseal growth plate, the TGF-beta type II receptor cDNA was detected by RT-PCR and, alternatively, the TGF-beta type II receptor protein and mRNA expression were observed in the chondrocytes in the lower part of the proliferative cell layer, and in maturative and hypertrophic cell layers by immunohistochemistry and in situ hybridization. Of these, proliferative and maturative chondrocytes, in particular, revealed strong mRNA expression. In the cortical bone area, immunoreactivity for the TGF-beta type II receptor was detected in the fibroblastic cells near the osteoblasts on the endosteal surface of cortical bone. In conclusion, our findings suggest that target cells of TGF-beta in normal bone tissue could be considered mainly as extracellular matrix-producing chondrocytes and undifferentiated preosteoblasts, and TGF-beta may affect matrix production and differentiation of these cells.
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Affiliation(s)
- Y Kabasawa
- Department of Periodontology, Niigata University, School of Dentistry, Japan
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37
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Noma T, Yoshizawa I, Kou K, Kawano Y, Mineta T, Odajima H, Kabasawa Y, Matsui K, Yata J, Ichikawa K, Mukoyama T, Baba M. [Correlation of interleukin-2 (IL-2) responsiveness by egg white-stimulated lymphocytes with hen egg oral provocation test in atopic children]. Arerugi 1996; 45:660-71. [PMID: 8831171] [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: 02/02/2023]
Abstract
One hundred and twenty five cases of atopic children such as atopic dermatitis and bronchial asthma were orally provocated with rare hen egg every 20 minutes one by one upto the whole amount. In one week observation 75 cases showed any symptoms of allergy including eruption and exacerbation of atopic eczema in an immediate, late, and/or delayed responses. Frequency of positive egg white-induce IL-2 responsiveness test in patients with positive oral provocation was 90.7% (68 out of 75 cases; sensitivity). That of negative test in patients with negative provocation was 84.0% (42 out of 50 cases; specificity). In contrast, specificity of IgE RAST for egg white were 88.0% comparable to the value of antigen-specific IL-2 responsiveness (AIR) test, but the specificity was lower value (37.3%) for screening the etiological antigens as compared to that of AIR test. High frequency of positive egg white-induced IL-2 responsiveness test was observed over an immediate, late and delayed responses, while low frequency of positive IgE RAST for hen egg was observed largely in patients showing delayed but not immediate response. The results indicate that IgE RAST in this study reflects IgE-mediated immediate type hypersensitivity, whereas AIR test reflects, in addition to immediate responses, late and delayed type hypersensitivity. The combined results suggest that AIR test in hen egg allergy is a useful method in vitro for both screening and determining etiological allergens, and might be able to substitute for provocation test in vivo for which many times, labours, expenses, and patients' risks are required, and to cover IgE RAST which fails to determine etiological allergens in 62.7% of patients with positive oral provocation.
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Affiliation(s)
- T Noma
- Department of Pediatrics, Hannou Central Hospital
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38
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Makimura M, Sugimoto H, Shinomiya K, Kabasawa Y, Fukuda H. Inhibitory effect of the NMDA receptor antagonist, dizocilpine (MK-801), on the development of morphine dependence. J Toxicol Sci 1996; 21:135-41. [PMID: 8780997 DOI: 10.2131/jts.21.2_135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We investigated the effect of a noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, (+)-5-methyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imin ehydrogen maleate (dizocilpine, MK-801), on hippocampal norepinephrine release in morphine-treated rats in order to clarify the relationship between NMDA receptors and the development of morphine dependence. Naloxone hydrochloride injected subcutaneously (s.c.) into morphine-dependent rats, induced an immediate increase in hippocampal norepinephrine release, which was associated with a typical morphine withdrawal syndrome. The increased norepinephrine levels persisted for at least 2 hr, even after the disappearance of the behavioral withdrawal syndrome. This striking effect of naloxone on hippocampal norepinephrine release was dependent on the duration of the intracerebroventricular (i.c.v.) morphine infusion. Pretreatment with dizocilpine (s.c.) before naloxone challenge reduce the rate of the rise in hippocampal norepinephrine release induced by naloxone in morphine-treated rats. Concurrent infusion (i.c.v.) of dizocilpine and morphine decreased the level of hippocampal norepinephrine release after a naloxone challenge. Both pretreatment with dizocilpine (s.c.) before naxolone injection and infusion (i.c.v.) of dizocilpine suppressed rearing and teeth-chattering signs, but not wet-dog shakes in morphine-treated rats. These results suggest that dizocilpine attenuates the development of morphine dependence through NMDA receptors, and thus that interaction between opioid receptors and NMDA receptors may be involved in the development of morphine dependence.
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Affiliation(s)
- M Makimura
- Department of Pharmacology, College of Pharmacy, Nihon University, Chiba, Japan
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39
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Shinomiya K, Inokuchi N, Gnabre JN, Muto M, Kabasawa Y, Fales HM, Ito Y. Countercurrent chromatographic analysis of ovalbumin obtained from various sources using the cross-axis coil planet centrifuge. J Chromatogr A 1996; 724:179-84. [PMID: 8819795 DOI: 10.1016/0021-9673(95)00911-6] [Citation(s) in RCA: 20] [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: 02/02/2023]
Abstract
The present studies have been conducted to investigate the cause of an unusually broad peak of ovalbumin obtained by countercurrent chromatography (CCC) reported earlier [K. Shinomija et al., J. Chromatogr., 644 (1993) 215]. A series of CCC experiments using our prototyte of the cross-axis coil planet centrifuge revealed that commercial ovalbumin products were classified into two groups: group A formed two peaks of ovalbumin at pH 7.0 and 5.8, while group B showed a relatively sharp single peak in a broad range of pH. Electrophoresis indicated that the group A ovalbumin consisted of both natural and denatured products: the natural ovalbumin is a monomer (Mr 45 000) whereas the denatured products form dimers (Mr 90 000). The abnormally broad peak obtained from the group A ovalbumin at pH 9 is apparently caused by the heterogeneity of the sample protein.
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Affiliation(s)
- K Shinomiya
- College of Parmacy, Nihon University, Narashinodai, Funabashi-shi, Chiba, Japan
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40
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Okuda K, Nakajima Y, Irie K, Sugimoto M, Kabasawa Y, Yoshie H, Hara K, Ozawa H. Transforming growth factor-beta 1 coated beta-tricalcium phosphate pellets stimulate healing of experimental bone defects of rat calvariae. Oral Dis 1995; 1:92-7. [PMID: 7553392 DOI: 10.1111/j.1601-0825.1995.tb00166.x] [Citation(s) in RCA: 16] [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: 01/25/2023]
Abstract
OBJECTIVE TGF-beta 1-coated beta-TCP pellets were grafted in experimental defects of rat calvariae to study the effects on new bone formation. MATERIALS AND METHODS The grafted sites were evaluated by light microscopy using hematoxylin-eosin (H-E) staining for histology and detection of alkaline phosphatase (ALPase) and tartrate-resistant acid phosphatase (TRACPase) activities to demonstrate osteoblastic and osteoclastic cells. Confocal laser scanning microscopy (CLSM) was performed for morphometry of newly formed bone. RESULTS H-E sections showed more new bone formation in sites grafted with TGF-beta 1-coated beta-TCP pellets (experimental sites) than those with beta-TCP pellets only (control sites). TRACPase-positive and ALPase-positive cells at experimental sites were more frequent than at control sites. The bone formation rate calculated by computerized CLSM pixel image analysis showed more new bone formation at the experimental sites than at control sites (3.4 +/- 0.8% vs 9.3 +/- 1.7% on week 2 and 11.8 +/- 2.1% vs 39.8 +/- 10.9% on week 4). CONCLUSION TGF-beta 1-coated beta-TCP pellets promote new bone formation and may be a useful modality in synthetic bone grafting.
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Affiliation(s)
- K Okuda
- Department of Periodontology, Niigata University School of Dentistry, Japan
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41
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Ozaki F, Matsukura M, Kabasawa Y, Ishibashi K, Ikemori M, Hamano S, Minami N. Synthesis and cardiovascular activity of phenylalkylamine derivatives. I. Potential specific bradycardic agents. Chem Pharm Bull (Tokyo) 1992; 40:2735-40. [PMID: 1464103 DOI: 10.1248/cpb.40.2735] [Citation(s) in RCA: 7] [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: 12/27/2022]
Abstract
A series of acyclic amide derivatives of N-(omega-aminoalkyl)-N-methylhomoveratrylamine was synthesized and evaluated for their bradycardic activity in isolated guinea pig right atria. Among these compounds, (E)-N-[3-[N'-[2-(3,4-dimethoxyphenyl)ethyl]-N'-methylamino]propyl]- 4-[3,4-(methylenedioxy)phenyl]-3-butenamide (35) was the most potent in vitro and was also found to show dose-dependent bradycardia without remarkable reduction of left ventricular dp/dtmax or mean aortic pressure in anesthetized dogs.
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Affiliation(s)
- F Ozaki
- Eisai Tsukuba Research Laboratories, Ibaraki, Japan
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42
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Yamanaka M, Suda S, Kabasawa Y, Kawamura T, Ogawa T, Sawada K, Ohhara H. Imidazo[1,2-alpha]pyridines. III. Synthesis and bradycardic activity of new 5-imidazo[1,2-alpha]pyridin-6-ylpyridine derivatives. Chem Pharm Bull (Tokyo) 1992; 40:1486-93. [PMID: 1394667 DOI: 10.1248/cpb.40.1486] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Structural modification of the cardiotonic agent, loprinone (E-1020, 1), suggested by data that it has a less positive chronotropic effect than milrinone (15), led us to find novel bradycardic agents that were structurally different from homoveratryl amine derivatives. Alkyl-oxy, -thio, and -amino derivatives at the 2-position of the pyridine ring of 1 produced bradycardic activity without a significant effect on blood pressure and myocardial contractility. Aryloxy analogues also decreased heart rate, and members with an electron-withdrawing group at the ortho position of the phenyl ring showed higher activity. Replacement of the imidazo[1,2-alpha]pyridine with pyridine resulted in diminished activity. The mechanism of bradycardic activity of these compounds seems to be direct action on the sinus node.
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Affiliation(s)
- M Yamanaka
- Eisai Tsukuba Research Laboratories, Ibaraki, Japan
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Abstract
An automated assay method has been developed for the measurement of serum cholinesterase activity. The samples were prepared by an automated liquid handling unit and incubated for 9.7 min at 30 degrees C, followed by automatic injection into a colorimetric flow injection determination system for acetic acid liberated from acetylcholine by cholinesterase catalytic activity. The coloration reaction employed is based upon the formation of 2-nitrophenylhydrazide utilizing a water-soluble carbodiimide and has a high selectivity for carboxylic acids. The coefficients of variation of the proposed method were 2.4% for within-run analysis (n = 14) and 2.6% for between-run analysis (n = 6). Sera of 55 hospitalized patients were analyzed and the values obtained correlated well with an automated differential pH method (gamma = 0.989).
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Affiliation(s)
- T Takeuchi
- Department of Pharmacy, College of Science and Technology, Nihon University, Japan
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Hayashi M, Itoh M, Kabasawa Y, Hayashi H, Satoh J, Morimatsu Y. A neuropathological study of a case of the Prader-Willi syndrome with an interstitial deletion of the proximal long arm of chromosome 15. Brain Dev 1992; 14:58-62. [PMID: 1590529 DOI: 10.1016/s0387-7604(12)80281-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An autopsy case, a 6-month-old girl, with an interstitial deletion of the long arm of chromosome 15;del(15)(q11.1q12) was reported. Muscle hypotonia, poor sucking and intermittent ocular deviation were noticed soon after birth. She also exhibited external features peculiar to the Prader-Willi syndrome (PWS). The muscle hypotonia persisted and head control was not achieved. She died at the age of 6 months due to bronchopneumonia. G-banding analysis of prometaphase chromosomes revealed a deletion of chromosome 15. Bronchopneumonia of the lungs and fatty metamorphosis of the liver were found. Neuropathological anomalies recognized were; disturbed undulating structures, resembling cortical micropolygyria and pachygyria, in the dentate nucleus and the inferior olivary nucleus, grumose degeneration of the nerve cells in the dentate nucleus, and heterotopia of middle-sized neurons in the cerebellar white matter. No abnormalities were observed in the hypothalamus-pituitary system. In some autopsy cases of PWS, cerebellar lesions have been reported. These might be related to the muscle hypotonia in PWS.
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Affiliation(s)
- M Hayashi
- Department of Pediatrics, Tokyo Medical and Dental University, Japan
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Affiliation(s)
- Y Kabasawa
- Department of Dermatology, Nagoya City University Medical School, Japan
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Affiliation(s)
- Y Kabasawa
- Department of Dermatology, Nagoya City University Medical School, Japan
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Affiliation(s)
- Y Kabasawa
- Department of Dermatology, Nagoya City University Medical School, Japan
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Affiliation(s)
- Y Kabasawa
- Department of Dermatology, Nagoya City University Medical School, Japan
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49
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Affiliation(s)
- T Kanzaki
- Department of Dermatology, Nagoya City University Medical School, Japan
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50
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Affiliation(s)
- T Kanzaki
- Department of Dermatology, Nagoya City University Medical School, Japan
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