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Suzuki H, Furuya J, Nakagawa K, Hidaka R, Yoshimi K, Shimizu Y, Saito K, Hatanaka Y, Mukai T, Itsui Y, Tohara H, Minakuchi S. Impact of oral health management by nurses and dental professionals on oral health status in inpatients eligible for the Nutrition Support Team: A longitudinal study. J Oral Rehabil 2024; 51:938-946. [PMID: 38366354 DOI: 10.1111/joor.13660] [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: 10/31/2023] [Revised: 12/25/2023] [Accepted: 02/05/2024] [Indexed: 02/18/2024]
Abstract
OBJECTIVE As the participation of dental professionals in multidisciplinary care is often limited, instructions on oral health management provided by dental professionals to other professionals are important to achieve transdisciplinary oral health management; however, the effectiveness of such instructions remains unclear. In this longitudinal study, we aimed to determine the impact of oral health management provided by dental professionals and nurses instructed on oral health management by dental professionals on the oral health of inpatients eligible for a Nurition Support Team (NST). METHODS The study participants were 117 patients (66 men and 51 women, mean age: 71.9 ± 12.5 years) who received oral health management during the NST intervention period. The participants received oral health management from nurses (Ns group) or dental professionals (D group). The nurses who conducted the oral health management received instructions from dental professionals. Oral health was assessed at the beginning and end of the NST intervention using the Oral Health Assessment Tool (OHAT). RESULT The Ns and D groups showed significant improvements in the total OHAT scores at the end of the NST intervention. Both groups showed significant improvements in the OHAT subitems of lip, tongue, gums and tissues, saliva, oral cleanliness and dental pain, while only the D group showed a significant improvement in the denture subitem. CONCLUSION Effective oral health management provided by dental professionals or by nurses trained by them improved the oral health status of inpatients eligible for NST at an acute-care hospital.
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Affiliation(s)
- Hiroyuki Suzuki
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Tokyo, Japan
| | - Junichi Furuya
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Tokyo, Japan
- Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kazuharu Nakagawa
- Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Rena Hidaka
- Department of Oral Health Sciences for Community Welfare, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kanako Yoshimi
- Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yukue Shimizu
- Department of Nutrition Service, Tokyo Medical and Dental University Hospital, Tokyo, Japan
| | - Keiko Saito
- Department of Nutrition Service, Tokyo Medical and Dental University Hospital, Tokyo, Japan
| | - Yukiko Hatanaka
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Tokyo, Japan
| | - Tomoko Mukai
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Tokyo, Japan
| | - Yasuhiro Itsui
- Medical Education Research and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Haruka Tohara
- Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shunsuke Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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Hara R, Todayama N, Tabata T, Mukai T, Hatanaka Y, Watanabe M, Kuwazawa M, Hironaka S, Kawate N, Furuya J. Association between oral health status and functional independence measure on admission in convalescent hospitalized patients. BMC Oral Health 2024; 24:63. [PMID: 38195416 PMCID: PMC10777547 DOI: 10.1186/s12903-023-03667-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/14/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Oral health management has become increasingly important for acute inpatients. Older patients often require extended periods of medical care, and oral health management is necessary in the convalescent period following the acute period. During the convalescent period, oral health management remains unclear as convalescent hospitals have limited dental resources, and effective dental care must be provided if the objective of hospitalization is to improve life functions. This study aimed to clarify the relationship between daily functioning and oral health status at the time of admission to a convalescent hospital to aid in improving daily functioning in the convalescent period. METHODS We included patients admitted to the rehabilitation department of a specific convalescent hospital from January to December 2021. A total of 375 patients were included in the study, with complete data records. At admission, we gathered information from the medical records, including the patient's age, sex, primary disease, Charlson Comorbidity Index, Mini Nutritional Assessment Short-Form (MNA-SF), Functional Oral Intake Scale (FOIS), Functional Independence Measure (FIM), number of teeth, and Oral Health Assessment Tool (OHAT). Statistical analysis was conducted using SPSS Ver. 27, with a significance level of 5%. RESULTS The mean age of the 375 participants (189 men and 186 women) was 75.0 ± 12.1 years (range, 42-97 years), and over 80% were > 65 years. About 30% of major diseases could be attributed to strokes and fractures, followed by spinal cord and spine diseases. In non-stroke patients, multiple regression analysis using FIM motor, FIM cognitive, and FIM and OHAT total scores as objective variables showed that higher total scores of MNA-SF, FOIS, and lower modified Rankin Scale and OHAT were significantly associated with better FIMs. Lower OHAT scores were significantly associated with lower FOIS and MNA-SF scores, male sex, having fewer teeth, and poor dietary patterns. CONCLUSIONS The convalescent period is an opportune time to provide intensive dental care due to the generally stable condition and extended hospital stay. Our results suggest that oral health management, such as dysphagia rehabilitation and denture treatment, is important for maintaining and improving independence, a key objective of convalescent rehabilitation, and malnutrition improvement.
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Affiliation(s)
- Ryuzo Hara
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Naoki Todayama
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Tomohiro Tabata
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Tomoko Mukai
- Division of Oral Function Management, Department of Oral Health Management, School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Yukiko Hatanaka
- Division of Oral Function Management, Department of Oral Health Management, School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Masataka Watanabe
- Division of Oral Function Management, Department of Oral Health Management, School of Dentistry, Showa University, Ota, Tokyo, Japan
| | - Miki Kuwazawa
- Division of Oral Function Management, Department of Oral Health Management, School of Dentistry, Showa University, Ota, Tokyo, Japan
- Fujigaoka Hospital Hospitaly Dentistry, Yokohama, Kanagawa, Japan
| | - Shouji Hironaka
- Department of Hygiene and Oral Health, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Nobuyuki Kawate
- Department of Rehabilitation Medicine, School of Medicine, Showa University, Shinagawa, Tokyo, Japan
| | - Junichi Furuya
- Department of Oral Function Management, Graduate School of Dentistry, Showa University, Ota, Tokyo, Japan.
- Division of Oral Function Management, Department of Oral Health Management, School of Dentistry, Showa University, Ota, Tokyo, Japan.
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Hara R, Todayama N, Tabata T, Kuwazawa M, Mukai T, Hatanaka Y, Hironaka S, Kawate N, Furuya J. The Association between Oral Health Management and the Functional Independence Measure Scores at the Time of Admission of Inpatients to a Convalescent Hospital. Geriatrics (Basel) 2023; 8:104. [PMID: 37887977 PMCID: PMC10606245 DOI: 10.3390/geriatrics8050104] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/05/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023] Open
Abstract
Many older patients admitted to convalescent hospitals present with impaired oral function, which is an important function of daily life. This study aimed to investigate the actual status of the oral healthcare needs of inpatients in a convalescent hospital and to clarify the relationship between the level of independence at admission and the oral function. The participants were 147 patients (94 males, 53 females, mean age: 74.6 ± 13.1 years) who received dental visits during their stay at a convalescent hospital. Information regarding general and oral health was extracted from medical records. Most patients were found to have low Functional Independence Measure motor scores, and approximately 70% had some form of oral intake, but approximately 80% had nutritional problems. The mean number of present and functional teeth were 16.6 and 20.8, respectively, and 65% of patients lost molar occlusal support. Multiple regression analysis showed significant positive correlations of high functional independence measure with age, eating status, nutritional status, and the number of functional teeth. This implied that oral health management is important for patients in a convalescent hospital and that enhancing oral health may be related to improved eating textures and better nutritional status.
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Affiliation(s)
- Ryuzo Hara
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
| | - Naoki Todayama
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
| | - Tomohiro Tabata
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
| | - Miki Kuwazawa
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
- Fujigaoka Hospital Hospitaly Dentistry, Yokohama-shi 227-8501, Japan
| | - Tomoko Mukai
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
| | - Yukiko Hatanaka
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
| | - Shouji Hironaka
- Department of Oral Hygiene, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan;
| | - Nobuyuki Kawate
- Department of Rehabilitation Medicine, Showa University Graduate School of Medicine, Ota-ku, Tokyo 142-8555, Japan;
| | - Junichi Furuya
- Department of Oral Function Management, Showa University Graduate School of Dentistry, Ota-ku, Tokyo 145-8515, Japan; (R.H.); (N.T.); (T.T.); (M.K.); (T.M.); (Y.H.)
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Miyanishi K, Sugiki T, Matsui T, Ozawa R, Hatanaka Y, Enozawa H, Nakamura Y, Murata T, Kagawa A, Morita Y, Fujiwara T, Kitagawa M, Negoro M. Protein-Ligand Interaction Analyses with Nuclear Magnetic Resonance Spectroscopy Enhanced by Dissolution Triplet Dynamic Nuclear Polarization. J Phys Chem Lett 2023:6241-6247. [PMID: 37401781 DOI: 10.1021/acs.jpclett.3c01002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Solution-state nuclear magnetic resonance spectroscopy (NMR) is a powerful method for the analysis of intermolecular interactions within a biomolecular system. However, low sensitivity is one of the major obstacles of NMR. We improved the sensitivity of solution-state 13C NMR for the observation of intermolecular interactions between protein and ligand using hyperpolarized solution samples at room temperature. Eutectic crystals composed of 13C-salicylic acid and benzoic acid doped with pentacene were hyperpolarized by dynamic nuclear polarization using photoexcited triplet electrons, and a 13C nuclear polarization of 0.72 ± 0.07% was achieved after dissolution. The binding of human serum albumin and 13C-salicylate was observed with several hundred times sensitivity enhancement under mild conditions. The established 13C NMR was applied for pharmaceutical NMR experiments by observation of the partial return of the 13C chemical shift of salicylate by competitive binding with other non-isotope-labeled drugs.
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Affiliation(s)
- K Miyanishi
- Division of Advanced Electronics and Optical Science, Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - T Sugiki
- Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan
| | - T Matsui
- Division of Advanced Electronics and Optical Science, Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - R Ozawa
- Division of Advanced Electronics and Optical Science, Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Y Hatanaka
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - H Enozawa
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Toyota, Aichi 470-0392, Japan
| | - Y Nakamura
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Toyota, Aichi 470-0392, Japan
| | - T Murata
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Toyota, Aichi 470-0392, Japan
| | - A Kagawa
- Division of Advanced Electronics and Optical Science, Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Y Morita
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Toyota, Aichi 470-0392, Japan
| | - T Fujiwara
- Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan
| | - M Kitagawa
- Division of Advanced Electronics and Optical Science, Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - M Negoro
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
- Premium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University, Suita, Osaka 565-0871, Japan
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Yamamura T, Hatanaka K, Harada K, Kawamoto Y, Watanabe R, Nakamura T, Yuki S, Mitsuhashi T, Hatanaka Y, Komatsu Y. 1712P Usefulness of schlafen-11 expression level in cstage II/III esophageal squamous cell carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1790] [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: 11/25/2022] Open
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Uchida Y, Sato Y, Kitagawa N, Furuya J, Osawa T, Isobe A, Terazawa M, Hatanaka Y, Shichita T. Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test. BMC Oral Health 2022; 22:223. [PMID: 35668400 PMCID: PMC9171963 DOI: 10.1186/s12903-022-02252-9] [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: 10/28/2021] [Accepted: 05/26/2022] [Indexed: 11/10/2022] Open
Abstract
Background In Japan, oral hypofunction has been recognized as a disease since 2018. An alternative to occlusal force testing for assessing oral hypofunction is the evaluation of the number of natural teeth. Subjective masticatory function testing, which evaluates the ease or difficulty in chewing foods, is an effective alternative to occlusal force testing. However, no reference values have been established for this test. We determined the reference values of the subjective masticatory function test and evaluated its potential as a substitute for the number of natural teeth for assessing oral hypofunction. Methods The sample consisted of 184 older adults who visited the Department of Geriatric Dentistry, Showa University Dental Hospital, from July 2018 to January 2020. The subjective masticatory function test (table for evaluation of chewing function in complete denture wearers [Chewing Score 20]) was performed using 20 foods. The occlusal force test and a receiver operating characteristic curve were used to determine the reference values for Chewing Score 20. The sensitivity, specificity, and positive and negative predictive values were calculated and compared with the occlusal force test and the number of natural teeth. Results A significant correlation (r) was found between the occlusal force test and the Chewing Score 20 (r = 0.526, p < 0.001). The reference value for Chewing Score 20 was < 85. Although the Chewing Score 20 was less sensitive than the number of natural teeth, it demonstrated a higher specificity and a positive predictive value. Conclusion Herein, a score of < 85 on the subjective masticatory function test was determined to be the optimal quantitative reference. The subjective masticatory function test may be used as an alternative for assessing oral hypofunction.
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Affiliation(s)
- Yoshiki Uchida
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan.
| | - Yuji Sato
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Noboru Kitagawa
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Junichi Furuya
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Tokiko Osawa
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Akio Isobe
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Mayumi Terazawa
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Yukiko Hatanaka
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
| | - Toshiharu Shichita
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, Japan
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Hatanaka Y, Furuya J, Sato Y, Uchida Y, Osawa T, Shichita T, Suzuki H, Minakuchi S. Impact of oral health guidance on the tongue-lip motor function of outpatients at a dental hospital. Gerodontology 2021; 39:83-89. [PMID: 34689371 PMCID: PMC9298372 DOI: 10.1111/ger.12599] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 11/28/2022]
Abstract
Objective To clarify the effect of oral health guidance on tongue‐lip motor function in the outpatients visiting the Showa University Dental Hospital (Tokyo, Japan). Background The management of the oral function of older people visiting a dental hospital is important. Previous studies have revealed that tongue‐lip motor function is easy to improve. However, the impact of oral health guidance on tongue‐lip motor function in the outpatients of dental hospital requires further elucidation. Materials and Methods The participants (n = 35) included patients who were diagnosed with low tongue‐lip motor function on evaluation by oral diadochokinesis (ODK) at the outpatient clinic. They underwent a second examination approximately 6‐12 months later. Their demographic characteristics were recorded. Oral health guidance was provided through an educational leaflet on oral hypofunction when the participants visited the clinic. It included content on tongue twisters, voice training and a range of movement and muscle training of the tongue and lip. Results Following oral health guidance on tongue‐lip motor function, the ODK values changed from 5.6 at the first examination to 6.0 at the second for /pa/, from 5.6 to 5.8 for /ta/ and from 5.2 to 5.4 for /ka/. This improvement was not significantly associated with age, sex, measurement period or number of visits. Conclusion The findings of this longitudinal study suggested that oral health guidance using an oral hypofunction educational leaflet may be effective in improving the tongue‐lip motor function of outpatients who had low tongue‐lip motor function, regardless of the measurement period or the number of visits to the dental hospital.
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Affiliation(s)
- Yukiko Hatanaka
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Junichi Furuya
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Yuji Sato
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Yoshiki Uchida
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Tokiko Osawa
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Toshiharu Shichita
- Department of Geriatric Dentistry, Showa University School of Dentistry, Tokyo, Japan
| | - Hiroyuki Suzuki
- Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shunsuke Minakuchi
- Gerodontology and Oral Rehabilitation, Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Nishida Y, Takahashi YK, Kanai T, Nose Y, Ishibashi S, Sanjo N, Uzawa A, Oda F, Ozawa Y, Kuwabara S, Noguchi E, Suzuki S, Nakahara J, Suzuki N, Ogawa T, Yokoyama K, Hattori N, Konno S, Fujioka T, Kawaguchi N, Hatanaka Y, Sonoo M, Kaneko J, Ogino M, Nishiyama K, Nomura K, Yokota T. Safety of tapering tacrolimus dose in patients with well-controlled anti-acetylcholine receptor antibody-positive myasthenia gravis. Eur J Neurol 2019; 27:100-104. [PMID: 31309642 DOI: 10.1111/ene.14039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/10/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND PURPOSE Tapering immunosuppressants is desirable in patients with well-controlled myasthenia gravis (MG). However, the association between tapering of calcineurin inhibitor dosage and reduction-associated exacerbation is not known. The aim of this study was to clarify the frequency of reduction-associated exacerbation when tacrolimus is tapered in stable patients with anti-acetylcholine receptor antibody-positive MG, and to determine the factors that predict exacerbations. METHODS We retrospectively analyzed 115 patients in whom tacrolimus dosage was tapered. The reduction-associated exacerbation was defined as the appearance or worsening of one or more MG symptoms <3 months after the reduction. RESULTS Tacrolimus dosage was successfully tapered in 110 patients (96%) without any exacerbation. Five patients (4%) experienced an exacerbation, but symptoms were reversed in all patients when the tacrolimus dose was increased to the previous maintenance level. No patient developed an MG crisis. The age at onset was significantly earlier (30 vs. 56 years, P = 0.025) and the reduction in dosage was significantly larger (2.0 vs. 1.0 mg/day, P = 0.002) in patients with reduction-associated exacerbation than in those without exacerbation. The cut-off values determined in a receiver-operating characteristic curve analysis were 52 years (sensitivity, 57%; specificity, 100%) for the age at onset and 1.5 mg (sensitivity, 80%; specificity, 100%) for the dose reduction. CONCLUSION Tapering of tacrolimus was possible in most patients with well-controlled anti-acetylcholine receptor antibody-positive MG. Early age at onset and a large reduction from maintenance dosage were associated with exacerbation. Reductions ≤1.5 mg/day from the maintenance dosage should be considered for patients with late-onset disease.
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Affiliation(s)
- Y Nishida
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y K Takahashi
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kanai
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Y Nose
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - S Ishibashi
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - N Sanjo
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Uzawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - F Oda
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Y Ozawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - S Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - E Noguchi
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - S Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - J Nakahara
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - N Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Ogawa
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - K Yokoyama
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - N Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - S Konno
- Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - T Fujioka
- Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan
| | | | - Y Hatanaka
- Department of Neurology, Teikyo University School of Medicine, Tokyo, Japan
| | - M Sonoo
- Department of Neurology, Teikyo University School of Medicine, Tokyo, Japan
| | - J Kaneko
- Department of Neurology, Kitasato University School of Medicine, Kanagawa, Japan
| | - M Ogino
- School of Medicine, Center for Medical Education, International University of Health and Welfare, Chiba, Japan
| | - K Nishiyama
- Department of Neurology, Kitasato University School of Medicine, Kanagawa, Japan
| | - K Nomura
- Department of Neurology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - T Yokota
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Ji X, Takahashi M, Morino S, Takakuwa T, Iijima H, Zhang X, Ishihara M, Kawagoe M, Hatanaka Y, Umezaki F, Yamashita M, Tsuboyama T, Aoyama T. Postpartum radiographic changes in pelvic morphology and its relation with symptoms of pregnancy-related symphysis pain. CLIN EXP OBSTET GYN 2018. [DOI: 10.12891/ceog3964.2018] [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: 11/01/2022]
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Goda T, Kinoshita I, Oizumi S, Nakano K, Harada T, Kawai Y, Sakakibara-Konishi J, Yokouchi H, Morikawa N, Yamada N, Yamazaki S, Sugawara S, Asahina H, Amano T, Hatanaka Y, Matsuno Y, Nishihara H, Isobe H, Nishimura M, Dosaka-Akita H. A prospective observational study of HER2 alterations in NSCLCs: HOT1303-A. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.111] [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: 11/13/2022] Open
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Kinoshita I, Goda T, Watanabe K, Maemondo M, Oizumi S, Amano T, Hatanaka Y, Matsuno Y, Nishihara H, Asahina H, Harada T, Goto K, Isobe H, Nishimura M, Dosaka-Akita H. A phase II study of trastuzumab monotherapy in pretreated patients with non-small cell lung cancers (NSCLCs) harboring HER2 alterations: HOT1303-B trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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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Kato T, Jin C, Ujiie H, Fujino K, Lee D, Wada H, Hu H, Wu L, Weersink R, Chen J, Kanno H, Hatanaka Y, Hatanaka K, Matsuno Y, De Perrot M, Wilson B, Zheng G, Yasufuku K. MA12.09 Preclinical Investigations of Folate Receptor Targeted Nanoparticles for Photodynamic Therapy of Malignant Pleural Mesothelioma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.418] [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: 11/27/2022]
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13
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Bando H, Tsukada Y, Inamori K, Fukuoka S, Sasaki T, Nishizawa Y, Wakabayashi M, Kojima M, Togashi Y, Yuki S, Komatsu Y, Homma S, Hatanaka Y, Matsuno Y, Uemura M, Kato T, Sato A, Nishikawa H, Ito M, Yoshino T. VOLTAGE: Multicenter phase Ib/II study of nivolumab monotherapy and subsequent radical surgery following preoperative chemoradiotherapy (CRT) with capecitabine in patients with locally advanced rectal cancer (LARC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ishida N, Hatanaka Y, Baba M, Hagio K, Okada H, Hatanaka KC, Matsuno Y, Yamashita H. Abstract P4-08-07: PIK3CA mutation, reduced AKT serine 473 phosphorylation, and increased ERα serine 167 phosphorylation are positive prognostic indicators in postmenopausal estrogen receptor-positive, HER2-negative early breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p4-08-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Endocrine therapy is the most important treatment option for women with estrogen receptor (ER)-positive breast cancer. We recently reported that approximately two-thirds of patients who relapsed within 5 years had received anthracyclins and/or taxanes as adjuvant or neoadjuvant chemotherapy in addition to adjuvant endocrine therapy. New strategies, such as signal transduction inhibitors together with endocrine therapy are required to improve survival. PIK3CA mutations are detected in almost 40% of early ER-positive breast cancers, and are therefore the most frequent genetic alterations in this subtype. PIK3CA mutation status is reported to affect activation of AKT and ERα. Moreover, recent studies demonstrate that patients had a better prognosis when tumors expressed ER, androgen receptor (AR), and vitamin D receptor (VDR).
Methods: Expression of AR and VDR, phosphorylation of AKT serine (Ser) 473 (AKT phospho-Ser473) and ERα Ser167 (ERα phospho-Ser167) were examined by immunohistochemistry in ER-positive, HER2-negative early breast cancer tissues. Seventeen mutations in exons 1, 4, 7, 9, and 20 of the PIK3CA gene were detected in genomic DNA extracted from formalin-fixed paraffin-embedded tumor blocks. Correlations between these biological markers and clinicopathological factors and prognosis were analyzed separately in pre- and postmenopausal women.
Results: Levels of AKT phospho-Ser473 were significantly higher in premenopausal women (n = 62) than in postmenopausal women (n = 152) (P < 0.0001 and P = 0.014, respectively). In contrast, expression levels of AR were significantly higher in postmenopausal women than in premenopausal women (P < 0.0001). In premenopausal women, 26 tumors (43%) had a single mutation of PIK3CA gene, and 3 tumors (5%) had mutations at two sites. In postmenopausal women, 64 tumors (44%) had a single PIK3CA mutation, 6 tumors (4%) had mutations at two sites, and one tumor (1%) had mutations at three sites. In premenopausal women, wild type PIK3CA was associated with smaller tumor size, higher ER expression levels, and lower AR expression levels when compared with women in the same cohort with PIK3CA mutant tumors. In postmenopausal women, patients with PIK3CA wild-type tumors had higher Ki67 labeling index, higher AKT phospho-Ser473, and lower ERα phospho-Ser167 when compared to patients with PIK3CA mutant tumors. Postmenopausal women with PIK3CA wild-type tumors had significantly worse disease-free survival than patients with PIK3CA mutant tumors (P = 0.007). In contrast, PIK3CA mutation status was not correlated with survival in premenopausal women. Low levels of AKT phospho-Ser473 and high levels of ERα phospho-Ser167 were strongly associated with increased disease-free survival in postmenopausal women (P = 0.016 and P = 0.0016, respectively).
Conclusion: ERα activation, in addition to PIK3CA mutation, may be biomarkers for highly endocrine-responsive tumors. This would facilitate the selection of postmenopausal ER-positive breast cancer patients who are likely to benefit from endocrine therapy alone from those who are not.
Citation Format: Ishida N, Hatanaka Y, Baba M, Hagio K, Okada H, Hatanaka KC, Matsuno Y, Yamashita H. PIK3CA mutation, reduced AKT serine 473 phosphorylation, and increased ERα serine 167 phosphorylation are positive prognostic indicators in postmenopausal estrogen receptor-positive, HER2-negative early breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-08-07.
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Affiliation(s)
- N Ishida
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Y Hatanaka
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - M Baba
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - K Hagio
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - H Okada
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - KC Hatanaka
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Y Matsuno
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - H Yamashita
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan; Research Division of Companion Diagnostics, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
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Hokkoku K, Tsukamoto H, Hatanaka Y, Sonoo M. Quantitative muscle ultrasound is useful for evaluating secondary axonal degeneration in chronic inflammatory demyelinating polyneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Ishizuka T, Tokuyama Y, Horie A, Hatanaka Y, Sato S, Kanatsuka A. Relationship between kidney function decline and initial risk factors for the progression of diabetic kidney disease: a retrospective analysis of 91 Japanese patients with type 2 diabetes. Diabetol Int 2016; 7:432-439. [PMID: 30603296 PMCID: PMC6224963 DOI: 10.1007/s13340-016-0270-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 04/16/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease (ESRD) in Japan. The clinical course and factors related to the progression of DKD to ESRD are important issues when treating patients with DKD. METHODS Ninety-one type 2 diabetic patients with DKD that had progressed from chronic kidney disease (CKD) stages G1-3 on their initial clinical visit to ESRD were enrolled. The decline in the estimated glomerular filtration rate (eGFR) was analyzed and the initial clinical factors that influenced the decline rate were explored. RESULTS There was a linear decline in eGFR before progression to ESRD, with a median annual decline rate (∆eGFR) of 9.2 mL/min/1.73 m2. In all patients, a history of coronary artery disease and increased levels of initial eGFR and high-density lipoprotein cholesterol (HDL-C) were positive predictors of log ∆eGFR, whereas age, history of cerebral infarction (CI), and an increased level of serum albumin were negative predictors of log ∆eGFR. In patients with CKD stages G1-2 on their first visit, male sex and increased diastolic blood pressure were positive predictors. In patients with CKD stage G3 on their first visit, an increased level of LDL-C was a positive predictor, whereas a history of CI and an increased level of serum total bilirubin (TBil) were negative predictors. CONCLUSION In addition to the common risk factors, initial eGFR, HDL-C, and TBil were identified as novel risk factors for ESRD. These risk factors may differ between patients with early and advanced stages of CKD.
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Affiliation(s)
| | | | - Atsuya Horie
- Chiba Central Medical Center, Diabetes Center, 1835-1 Kasori-cho, Wakaba-ku, Chiba, 264-0017 Japan
| | - Yukiko Hatanaka
- Chiba Central Medical Center, Diabetes Center, 1835-1 Kasori-cho, Wakaba-ku, Chiba, 264-0017 Japan
| | - Sumihiko Sato
- Sato Clinic, 2138-1 Wakamatsu-cho, Wakaba-ku, Chiba, 264-0021 Japan
| | - Azuma Kanatsuka
- Chiba Central Medical Center, Diabetes Center, 1835-1 Kasori-cho, Wakaba-ku, Chiba, 264-0017 Japan
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Saito F, Okuma H, Mitsui J, Hara Y, Hatanaka Y, Ikada M, Shimizu T, Matsumura K, Shimizu J, Tsuji S, Sonoo M. Tubular aggregate myopathy caused by a novel mutation in the cytoplasmic domain of STIM1. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yamashita Y, Takahashi M, Koga Y, Saito R, Nanakawa S, Hatanaka Y, Sato N, Nakashima K, Urata J, Yoshizumi K, Ito K, Sumi S. Prognostic Factors in Liver Metastases after Transcatheter Arterial Embolization or Arterial Infusion. Acta Radiol 2016. [DOI: 10.1177/028418519003100308] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
From January 1986 to December 1988, 85 patients (55 men and 30 women, mean age 59 years) with metastatic liver tumors were treated with hepatic artery embolization (TAE) or infusion (HAI). Sixty-eight patients with successful catheterization were treated with TAE using iodized oil (Lipiodol) mixed with anticancer agent (ACA). In 12 of 68 patients with hypervascular tumors gelatin sponge was added. Patients with unsuccessful catheterization were treated with hepatic artery infusion of ACA. Forty-three patients received oral chemotherapy following TAE or HAI. Overall, the 6-month, and 1- and 2-year survival rates were 69.5, 31.8 and 4.1 per cent, respectively (mean 233 days). A univariate analysis of prognostic factors showed that number of metastases, stage, treatment times and oral chemotherapy were all significant factors (p<0.05). Ascites, jaundice, percentage of hepatic replacement and treatment protocol also had some influence (p<0.1). Sex, age, primary site, elevation of tumor markers, other metastatic lesions, portal vein involvement and difference in anticancer agent had no prognostic significance. A multivariate analysis using Cox's proportional hazard model revealed that the number of treatments had the most important prognostic significance, followed by oral chemotherapy, stage and percentage of hepatic replacement.
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Okuma H, Matsumura K, Hatanaka Y, Saito F, Sonoo M. Sudden onset of sleep due to hypothalamic lesions in neuromyelitis optica spectrum disorder positive for anti-aquaporin-4 antibody. Mult Scler 2014; 20:1407-8. [DOI: 10.1177/1352458514540359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We report a patient with neuromyelitis optica spectrum disorders who presented with sudden onset of sleep as the sole manifestation. Magnetic resonance imaging investigation revealed lesions in the hypothalamus bilaterally, which vanished completely after methylprednisolone pulse therapy.
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Affiliation(s)
- H Okuma
- Teikyo University School of Medicine, Tokyo, Japan
| | - K Matsumura
- Teikyo University School of Medicine, Tokyo, Japan
| | - Y Hatanaka
- Teikyo University School of Medicine, Tokyo, Japan
| | - F Saito
- Teikyo University School of Medicine, Tokyo, Japan
| | - M Sonoo
- Teikyo University School of Medicine, Tokyo, Japan
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Higashihara M, Sonoo M, Kobayashi M, Hatanaka Y, Murayama S. P547: Clustering of discharges in the firing of fasciculation potentials. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50645-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Mok W, Hatanaka Y, Seoka M, Itoh T, Tsukamasa Y, Ando M. Effects of additional cysteine in fish diet on mercury concentration. Food Chem 2014; 147:340-5. [DOI: 10.1016/j.foodchem.2013.09.157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 07/31/2013] [Accepted: 09/30/2013] [Indexed: 10/26/2022]
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Chiba T, Sonoo M, Oishi C, Uchino K, Okuma H, Kurono H, Hokkoku K, Hatanaka Y. Initial dip and bilobed N21 peak in the tibial nerve SEPs suggest predominant demyelination in the nerve root. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Uchino K, Ogawa G, Chiba T, Hokkoku K, Hatanaka Y, Sonoo M. Etiological consideration of 26 patients with dropped head syndrome. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tsukamoto H, Hatanaka Y, Hokkoku K, Chiba T, Ito E, Sonoo M, Shimizu T. P5.7 Activity dependent conduction block and distal conduction disturbance after exercise in anti-MAG neuropathy. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60271-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Oishi C, Sonoo M, Hatanaka Y, Tsukamoto H, Shimizu T, Chiba A. P14-6 Utility of somatosensory evoked potential (SEPs) for the diagnosis of sensory CIDP. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60764-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Shimizu J, Hatanaka Y, Hasegawa M, Iwata A, Sugimoto I, Date H, Goto J, Shimizu T, Takatsu M, Sakurai Y, Nakase H, Uesaka Y, Hashida H, Hashimoto K, Komiya T, Tsuji S. IFNβ-1b may severely exacerbate Japanese optic-spinal MS in neuromyelitis optica spectrum. Neurology 2010; 75:1423-7. [PMID: 20826711 DOI: 10.1212/wnl.0b013e3181f8832e] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Interferon-β-1b (IFNβ-1b) has been used to prevent exacerbation of relapsing-remitting multiple sclerosis (RRMS) including optic-spinal multiple sclerosis (OSMS) in Japan. We encountered 2 patients with OSMS with unexpectedly severe exacerbation soon after the initiation of IFNβ-1b therapy. The experience urged us to retrospectively review the patients with RRMS who had been treated with IFNβ-1b to identify similar cases. METHODS At neurologic departments of 9 hospitals, the medical records of 56 patients with RRMS were reviewed to identify those who showed severe exacerbation soon after the initiation of IFNβ-1b therapy. RESULTS Of 56 patients with RRMS, we identified 7 who experienced severe exacerbation (exacerbation with increased scores of Expanded Disability Status Scale ≧7.0) within 90 days of the initiation of IFNβ-1b therapy. In all 7 patients, the exacerbations after the initiation of IFNβ-1b therapy were more severe than those experienced by the individual patients before the use of IFNβ-1b, and seemed to have occurred unexpectedly in a short time after the initiation of INFβ-1b therapy. A retrospective analysis revealed that all 7 patients had antibodies toward aquaporin 4, and the clinical features of all 7 patients after the exacerbation were consistent with those of neuromyelitis optica (NMO) spectrum. CONCLUSIONS Our study suggests that IFNβ-1b may trigger severe exacerbation in patients with the NMO spectrum. In INFβ-1b therapy, cases in NMO spectrum should be carefully excluded.
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Affiliation(s)
- J Shimizu
- Department of Neurology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Iwanami T, Sonoo M, Hatanaka Y, Ooishi C, Shimizu T. PO31-FR-22 Comparison of the decremental response in repetitive nerve stimulation between ALS and MG. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)71240-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Arimatsu Y, Nihonmatsu I, Hatanaka Y. Localization of latexin-immunoreactive neurons in the adult cat cerebral cortex and claustrum/endopiriform formation. Neuroscience 2009; 162:1398-410. [PMID: 19486926 DOI: 10.1016/j.neuroscience.2009.05.060] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 05/22/2009] [Accepted: 05/22/2009] [Indexed: 01/12/2023]
Abstract
The distribution of neurons that are immunoreactive to latexin, which is an endogenous inhibitor of the A/B subfamily of metallocarboxypeptidases, was investigated in the adult cat telencephalon. Latexin-immunoreactive neurons were distributed in the lower layers of the neocortex and adjacent ventral mesocortex, as well as in the claustrum/endopiriform formation. There were marked regional and laminar differences in density and distribution of latexin-immunoreactive neurons in the cerebral cortex. The density followed a roughly lateral-to-medial decreasing gradient: it was high in lateral cortical regions, which included the insular, second somatosensory, and anterior sylvian areas, and in the temporal auditory field; moderate in laterodorsal cortical regions, which included the primary and second auditory fields; and low in dorsal cortical regions, which included visual areas 18 and 19. Latexin-immunoreactive neurons were absent in medial cortical regions, which included the motor, premotor, prefrontal, prelimbic, cingulate, and retrosplenial areas. The lateral-to-medial gradient was apparent even within a single cytoarchitectonic area in certain cortical regions. The allocortex was devoid of latexin-immunoreactive neurons, with the exception of the anteroventral part of the dentate gyrus. The majority of cortical latexin-immunoreactive neurons were localized in layers V and VI and appeared to correspond to the "modified pyramidal cells in the infragranular layers." The remaining latexin-immunoreactive neurons were localized in layer IV, as well as in lower layer III and in the white matter. There were no latexin-immunoreactive neurons from layer I through upper layer III. Latexin-immunoreactive neurons were present in telencephalic structures outside the cerebral cortex, with particularly high density in the claustrum/endopiriform formation. All these features, with the exception of that detected in the archicortex, are compatible with the features observed previously in the rat telencephalon. The similar pattern of distribution of latexin-immunoreactive neurons in several mammalian species from different orders suggests that latexin plays an important role in a specific cortical network.
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Affiliation(s)
- Y Arimatsu
- Mitsubishi Kagaku Institute of Life Sciences, 11 Minamiooya, Machida-shi, Tokyo 194-8511, Japan.
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Kurokawa K, Sonoo M, Higashihara M, Kurono H, Yamazaki Y, Sugiura T, Hatanaka Y, Shimizu T. 34. The mechanism of the far-field potentials contaminating ulnar compound muscle action potentials. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2008.10.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sonoo M, Kuwabara S, Shimizu T, Komori T, Hirashima F, Inaba A, Hatanaka Y, Misawa S, Kugio Y. 63. The significance of tongue and trapezius electromyography in the diagnosis of amyotrophic lateral sclerosis. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2008.10.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hatanaka Y, Sonoo M, Tsukamoto H, Shimizu T, Sakurai Y, Mikata T, Shiraishi H, Motomura M. 105. Double seronegative myasthenia gravis is characterized by dropped head syndrome. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2008.10.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kawakami S, Sonoo M, Hatanaka Y, Tsukamoto H, Taji A, Kusunoki S, Chiba A, Shimizu J, Shimizu T. 78. The correlation between electrophysiological subgroups and antibodies in Guillain–Barré syndrome. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2008.10.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hatanaka Y, Zamami Y, Koyama T, Hobara N, Jin X, Kitamura Y, Kawasaki H. A ketolide antibiotic, telithromycin, inhibits vascular adrenergic neurotransmission in the rat mesenteric vascular bed. Br J Pharmacol 2008; 155:826-36. [PMID: 18695647 DOI: 10.1038/bjp.2008.313] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE A ketolide antibiotic, telithromycin, has side effects including temporary loss of consciousness in clinical use, but the underlying mechanisms remain unclear. This study investigated the effects of telithromycin on perivascular nerve function in rat mesenteric arteries, in comparison with those of macrolide (erythromycin and clarithromycin) and new quinolone antibiotics (levofloxacin and gatifloxacin). EXPERIMENTAL APPROACH In vitro, vascular responses and release of noradrenaline induced by periarterial nerve stimulation (PNS) of rat perfused mesenteric vascular beds were measured in the presence of each antibiotic. In vivo blood pressure measurement was performed in Wistar rats. KEY RESULTS In mesenteric preparations with resting tone, telithromycin (10 nM-10 microM) markedly inhibited PNS (4-12 Hz)-induced adrenergic nerve- and exogenous noradrenaline-mediated vasoconstriction, whereas the other antibiotics slightly inhibited PNS-induced responses without affecting noradrenaline-induced responses. Telithromycin significantly reduced PNS (12 Hz)-evoked noradrenaline release in the perfusate. In pre-constricted preparations with or without endothelium, telithromycin (0.1 nM-10 microM) caused a concentration-dependent vasodilation. Telithromycin (10 nM) inhibited calcium-induced vasoconstriction in high KCl and calcium-free medium. None of the antibiotics used affected PNS (0.5-2 Hz)-induced calcitonin gene-related peptide (CGRP) nerve- and exogenous CGRP-mediated vasodilation. Intravenous injection of telithromycin significantly lowered blood pressure in anaesthetized rats. CONCLUSIONS AND IMPLICATIONS These results suggest that telithromycin causes not only strong inhibition of perivascular adrenergic neurotransmission but also a vasodilator action in mesenteric vascular beds and hypotension. It is thus possible that telithromycin increases visceral blood flow, consequently reducing cerebral blood flow and resulting in a temporary loss of consciousness.
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Affiliation(s)
- Y Hatanaka
- Department of Clinical Pharmaceutical Science, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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Hatanaka Y, Oh S. 120. Post-exercise exhaustion in Lambert-Eaton myasthenic syndrome is seen in 2 min after the exercise. Clin Neurophysiol 2008. [DOI: 10.1016/j.clinph.2007.11.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kurokawa K, Sonoo M, Hiroko K, Sueda Y, Sugiura T, Hatanaka Y, Sawada M, Uesugi H, Shimizu T. 38. Origin of the far-field potentials in radial motor conduction study. Clin Neurophysiol 2008. [DOI: 10.1016/j.clinph.2007.11.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Amano T, Hatanaka Y, Saeki K, Hosoi Y, Iritani A, Matsumoto K. 163 SEARCH FOR GENES OF WHICH THE AMOUNTS OF TRANSCRIPTS OSCILLATE EVERY 24 h IN THE MOUSE OVARY. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Perturbation of circadian rhythm is believed to be detrimental to the physiology of organs, including the mammalian ovary. However, the molecular mechanisms that are regulated by circadian rhythm in the ovary have not been identified. To identify the molecular mechanisms that are regulated by circadian rhythm and to speculate on the physiologies that are likely to be damaged by perturbation of circadian rhythm in the ovary, we searched for genes in which the amount of transcripts oscillates every 24 h in the mouse ovary. To achieve this, expression profiles of circadian genes (per1, per2, and bmal1) that code transcription-regulation factors for which transcription activities are known to oscillate every 24 h in almost all organs, and wee1, the transcription activity of which circadian genes regulate and which is known to elongate the G2 phase in the cell cycle, were analyzed in this study. Six-week-old female ICR mice were kept individually under a lighting schedule with lights on for 14 h followed by lights off for 10 h. A vaginal smear of each mouse was collected every day to determine its estrous cycle. Ovaries of 3 mice were collected continuously every 4 h over a 4-day period from the start of the light period on the day of proestrus. Total RNA was extracted from each ovary, and 500 ng each was used for cDNA synthesis. Transcripts of each gene and of tbp were quantified by real-time PCR, and the amount of the transcripts of each gene in each sample was divided by the amount of tbp transcripts. The obtained relative values in each sample were used as the representative data of the amount of transcripts of each gene. The amounts of per1, per2, and bmal1 clearly oscillated every 24 h. The maximum and minimum values of per1 and per2 were observed at 16 and 4 h, respectively, after onset of the light period each day. The maximum and minimum values of bmal1 were observed at the time of onset of the light period and at 12 h after onset of the light period each day. Averages of the maximum values of per1, per2, and bmal1 each day were significantly greater than averages of the minimum values (per1, 3.60 � 0.10 and 1.38 � 0.09; per2, 0.82 � 0.08 and 0.27 � 0.06; bmal1, 0.61 � 0.05 and 0.17 � 0.01; P < 0.05). The cyclicity in the oscillation of the amount of wee1 transcripts was weaker than that observed in circadian genes, but the average of values that were obtained from 12 to 20 h after onset of the light period each day was significantly greater than that obtained from 0 to 8 h (0.29 � 0.02 and 0.22 � 0.01; P < 0.05). Our results suggested that the cell cycle of ovarian cells is regulated in a circadian manner through wee1 transcription, which is regulated by circadian genes of which the amounts of transcripts oscillate every 24 h. Because an abnormal cell cycle seems to trigger the development of tumors or follicular cysts, perturbation of circadian rhythm may cause those ovarian diseases.
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Hatanaka Y, Kinoshita K, Yamazaki M. Osmotic stress induces a phase transition from interdigitated gel phase to bilayer gel phase in multilamellar vesicles of dihexadecylphosphatidylcholine. Biophys Chem 2007; 65:229-33. [PMID: 17029858 DOI: 10.1016/s0301-4622(97)00004-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/1996] [Revised: 12/13/1996] [Accepted: 12/21/1996] [Indexed: 11/18/2022]
Abstract
We have investigated the effects of poly(ethylene glycol) (PEG) on the structure and phase behavior of multilamellar vesicles of dihexadecylphosphatidylcholine (DHPC-MLVs) using an X-ray diffraction method. At low concentrations of PEG-6K (MW = 7500), DHPC-MLVs were in an interdigitated gel (L(beta)I) phase, a gel phase with interdigitated hydrocarbon chains. At around 24% (w/v) PEG 6K, a phase transition from the L(beta)I phase to a bilayer gel phase occurred in the DHPC-MLVs, and above this concentration, they were in a bilayer gel phase. On the other hand, ethylene glycol (EG), the monomer of PEG, did not induce this phase transition in the DHPC-MLVs. A mechanism of this phase transition is proposed and discussed; a decrease in the repulsive interaction between the head groups of the phospholipids in the bilayer gel phase with an increase in PEG concentration, which is due to a decrease in the cross-sectional area of the head group region by osmotic stress, may be the main reason for this phase transition.
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Affiliation(s)
- Y Hatanaka
- Department of Physics, Faculty of Science, Shizuoka University, 836 Oya, Shizuoka 422, Japan
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Okada N, Sasaki A, Niwa M, Okada Y, Hatanaka Y, Tani Y, Mizuguchi H, Nakagawa S, Fujita T, Yamamoto A. Tumor suppressive efficacy through augmentation of tumor-infiltrating immune cells by intratumoral injection of chemokine-expressing adenoviral vector. Cancer Gene Ther 2007; 13:393-405. [PMID: 16224496 DOI: 10.1038/sj.cgt.7700903] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Our goal in the present study was to evaluate antitumor effects and frequency of tumor-infiltrating immune cells upon intratumoral injection of RGD fiber-mutant adenoviral vector (AdRGD) encoding the chemokines CCL17, CCL19, CCL20, CCL21, CCL22, CCL27, XCL1, and CX3CL1. Among eight kinds of chemokine-expressing AdRGDs, AdRGD-CCL19 injection most efficiently induced infiltration of T cells into established B16BL6 tumor parenchyma, whereas most of these T cells were perforin-negative in immunohistochemical analysis. Additionally, the growth of AdRGD-CCL19-injected tumors decreased only slightly as well as that of other tumors treated with each chemokine-expressing AdRGD, which indicated that accumulation of naive T cells in tumor tissue does not effectively damage the tumor cells. Tumor-bearing mice, in which B16BL6-specific T cells were elicited by dendritic cell-based immunization, demonstrated that intratumoral injection of AdRGD-CCL17, -CCL22, or -CCL27 could considerably suppress tumor growth and attract activated T cells. On the other hand, AdRGD-CCL19-injection in the immunized mice showed slight increase of tumor-infiltrating T cells compared to treatment using control vector. Collectively, although AdRGD-mediated chemokine gene transduction into established tumors would be very useful for augmentation of tumor-infiltrating immune cells, a combinational treatment that can systemically induce tumor-specific effector T cells is necessary for satisfactory antitumor efficacy.
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Affiliation(s)
- N Okada
- Department of Biopharmaceutics, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, Japan.
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Gao JQ, Kanagawa N, Motomura Y, Yanagawa T, Sugita T, Hatanaka Y, Tani Y, Mizuguchi H, Tsutsumi Y, Mayumi T, Okada N, Nakagawa S. Cotransduction of CCL27 gene can improve the efficacy and safety of IL-12 gene therapy for cancer. Gene Ther 2007; 14:491-502. [PMID: 17203106 DOI: 10.1038/sj.gt.3302892] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Interleukin-12 (IL-12) is a potent antitumoral cytokine, but high doses are toxic. Herein, we demonstrate that combinational transduction of IL-12 and CC-chemokine ligand-27 (CCL27) genes into pre-existing murine OV-HM ovarian carcinoma and Meth-A fibrosarcoma, by using RGD fiber-mutant adenoviral vectors, could induce tumor regression and relieve systemic side effects more effectively than either treatment alone. The antitumor activity of the IL-12 and CCL27 combination treatment was T-cell-dependent, and development of long-term specific immunity was confirmed in rechallenge experiments. Immunohistochemical analysis of tumors transduced with CCL27 gene alone or cotransduced with IL-12 and CCL27 genes showed significant increases in numbers of infiltrating CD3(+) T cells, which included both CD4(+) and CD8(+) cells. Additionally, cotransduction with IL-12 and CCL27 genes could more efficiently activate tumor-infiltrating immune cells than transduction with CCL27 alone, as determined by the frequency of perforin-positive cells and expression levels of IFN-gamma. Furthermore, mice treated with the IL-12 and CCL27 combination compared with those treated with IL-12 alone showed milder pathological changes, for example, lymphocyte infiltration and extramedullary hematopoiesis, in lung, liver and spleen. Our data provide evidence that combinational in vivo transduction with IL-12 and CCL27 genes is a promising approach for the development of cancer immunogene therapy that can simultaneously recruit and activate tumor-infiltrating immune cells.
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Affiliation(s)
- J-Q Gao
- Department of Biotechnology and Therapeutics, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
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Kato T, Terashima T, Yamashita T, Hatanaka Y, Honda A, Umemura Y. Effect of low-repetition jump training on bone mineral density in young women. Scand J Med Sci Sports 2006. [DOI: 10.1111/j.1600-0838.2006.00555_1.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hatanaka Y, Hemmi S, Morgan MB, Scheufele ML, Claussen GC, Wolfe GI, Oh SJ. Nonresponsiveness to anticholinesterase agents in patients with MuSK-antibody-positive MG. Neurology 2006; 65:1508-9. [PMID: 16275854 DOI: 10.1212/01.wnl.0000183145.91579.74] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y Hatanaka
- Department of Neurology, The University of Alabama, Birmingham, AL 35294, USA
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Sonoo M, Tsaiweichao-Shozawa Y, Oshimi-Sekiguchi M, Hatanaka Y, Shimizu T. Spread of the radial SNAP: A pitfall in the diagnosis of carpal tunnel syndrome using standard orthodromic sensory conduction study. Clin Neurophysiol 2006; 117:604-9. [PMID: 16403483 DOI: 10.1016/j.clinph.2005.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Revised: 10/27/2005] [Accepted: 11/13/2005] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To investigate the occurrence of the spread of the radial sensory nerve action potential (SNAP) among patients with carpal tunnel syndrome (CTS) during standard median orthodromic sensory conduction study (SCS) using index finger stimulation. METHODS We prospectively examined 74 hands in 56 CTS patients. We stimulated the index finger using ring electrodes. SNAPs were recorded at wrist over median and radial nerves. RESULTS A spread of radial SNAP was clearly identified over the median nerve despite its small amplitude, in 72/74 hands during stimulation of the base of the index finger. In hands with delayed median SNAP, two peaks were observed; however in hands with absence of genuine median SNAP, only one peak of the spread was noticed. The proximal interphalangeal joint (PIP) stimulation still elicited an identifiable spread in 47/74 hands. CONCLUSION This spread phenomenon is a previously undescribed pitfall during the standard median orthodromic SCS, frequently occurring in CTS patients. SIGNIFICANCE In severe CTS cases, one may make wrong conclusion of normal median sensory latency if unaware of this pitfall.
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Affiliation(s)
- M Sonoo
- Department of Neurology, Teikyo University School of Medicine, Itabashi-ku, Tokyo 173-8605, Japan.
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Takagi S, Goto H, Shimada Y, Nakagomi K, Sadakane Y, Hatanaka Y, Terasawa K. Vasodilative effect of perillaldehyde on isolated rat aorta. Phytomedicine 2005; 12:333-7. [PMID: 15957366 DOI: 10.1016/j.phymed.2003.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The vasodilative effect of perillaldehyde, one of the major oil components in Perilla frutescens BRITTON, was studied using isolated rat aorta. Perillaldehyde at final concentrations of 0.01 to 1 mM showed dose-dependent relaxation of the aorta contracted by treatment with prostaglandin F2alpha or norepinephrine. Neither the presence of NG-nitro-L-arginine methyl ester nor removal of the aortic endothelium affected the vasodilatation, suggesting that perillaldehyde exerts a direct effect on vascular smooth muscle cells. The vasodilative effect of perillaldehyde was not inhibited by pretreatment with a beta-adrenergic receptor blocker (propranolol), an inhibitor of phosphodiesterase (theophylline), a delayed rectifier K+ channel blocker (tetraethylammonium chloride), or an ATP-sensitive K+ channel blocker (glibenclamide). However, perillaldehyde showed contrasting effects on vasodilatation of the aorta contracted by an influx of extracellular Ca2+ - perillaldehyde caused little vasodilatation on the aorta contracted by the Ca2+ ionophore A23187, while it inhibited the vasoconstriction induced by treatment with high-concentration K+, which dominantly opened the voltage-dependent Ca2+ channel. These results suggest that the vasodilative effect of perillaldehyde is derived from blocking the Ca2+ channels.
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Affiliation(s)
- S Takagi
- Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
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Sonoo M, Hatanaka Y, Tsukamoto H, Tsai-Shozawa Y, Shimizu T. N10 component in median nerve somatosensory evoked potentials (SEPs) is not an antidromic motor potential. Clin Neurophysiol 2004; 115:2645-9. [PMID: 15465454 DOI: 10.1016/j.clinph.2004.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2004] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To test the hypothesis that the N10 far-field potential in median nerve somatosensory evoked potentials is generated by the motor axons by examining patients with amyotrophic lateral sclerosis (ALS). METHODS Subjects were 5 ALS patients showing pronounced or complete denervation of median-innervated small hand muscles. We evaluated N10 over scalp, and proximal plexus volleys (PPVs) at lateral or anterior cervical electrode. RESULTS N10 and PPVs were definitely preserved for every ALS subject. N10 amplitudes of ALS subjects were even significantly larger than control subjects. In one ALS patient completely lacking motor axons, N10 was larger than the largest one among control subjects. CONCLUSIONS Present results clearly indicate that N10 is not predominantly generated by motor axons but by the whole median nerve dominated by sensory axons. We propose a theory that N10 is a junctional potential generated by the entrance of the median nerve into bone at the intervertebral foramen, producing a positive pole at the non-cephalic reference electrode. Significantly larger N10 in ALS subjects may be due to the lack of cancellation by slower motor axons. SIGNIFICANCE The hypothesis that N10 is generated by motor axons is refuted, and a new theory of its generation is presented.
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Affiliation(s)
- M Sonoo
- Department of Neurology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-ku, Tokyo 1738605, Japan.
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Abstract
We report that a 27-year-old woman with bilateral severe hydronephorosis during pregnancy 20 years after antireflux surgery. The patient developed postrenal acute renal failure due to obstruction of the lower ureter. This patient could safely give birth after bilateral percutaneous nephrostomy through joint management with the obstetrics and gynecology staff. We describe that stenosis of the lower ureter is a late complication of antireflux surgery.
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Affiliation(s)
- S Matsumoto
- Department of Urology, Sakai Hospital, Kinki University School of Medicine, Sakai, Japan.
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Abstract
We herein report a case of aceruloplasminemia in a 27-year-old man who had a 10-year history of diabetes mellitus. The patient developed a convulsion, most likely as a result of hypoglycemia. Unexpectedly, this episode left him in a prolonged state of unconsciousness, which necessitated neurological testing and imaging. Brain MRI showed bilateral hypo-intensities in the basal ganglia and thalamus. Molecular analysis revealed a novel splicing mutation in the ceruloplasmin (CP) gene that would result in the skipping of exon 3 during transcription. This case suggests that diabetes associated with aceruloplasminemia can become manifest in the teens.
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Affiliation(s)
- Yukiko Hatanaka
- Department of Internal Medicine, Naruto General Hospital, Chiba
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Wróbel AM, Błaszczyk I, Walkiewicz-Pietrzykowska A, Tracz A, Klemberg-Sapieha JE, Aoki T, Hatanaka Y. Remote hydrogen–nitrogen plasma chemical vapor deposition from a tetramethyldisilazane source. Part 1. Mechanism of the process, structure and surface morphology of deposited amorphous hydrogenated silicon carbonitride filmsElectronic supplementary information (ESI) available: deconvoluted emission and IR spectra of a-Si–N–C–H films. See http://www.rsc.org/suppdata/jm/b2/b211415c/. ACTA ACUST UNITED AC 2003. [DOI: 10.1039/b211415c] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wróbel AM, Walkiewicz-Pietrzykowska A, Klemberg-Sapieha JE, Hatanaka Y, Aoki T, Nakanishi Y. Remote hydrogen plasma chemical vapor deposition of silicon-carbon thin-film materials from a hexamethyldisilane source: Characterization of the process and the deposits. J Appl Polym Sci 2002. [DOI: 10.1002/app.11304] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sato Y, Nakai H, Mizoguchi T, Hatanaka Y, Kanaoka Y. Photochemistry of the phthalimide system. VII. Regioselective remote photocyclization. Examples of a photochemical macrocyclic synthesis with sulfide-containing phthalimides. J Am Chem Soc 2002. [DOI: 10.1021/ja00424a066] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hatanaka Y, Hara T, Fujita H, Kasai S, Endo T, Iwase T. Development of an automated method for detecting mammographic masses with a partial loss of region. IEEE Trans Med Imaging 2001; 20:1209-1214. [PMID: 11811821 DOI: 10.1109/42.974916] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Recently, we have been developing several automated algorithms for detecting masses on mammograms. For our algorithm, we devised an adaptive thresholding technique for detecting masses, but our system failed to detect masses with a partial loss of region that were located on the edge of the film. This is a common issue in all of the algorithms developed so far by other groups. In order to deal with this problem, we propose a new method in the present study. The partial loss masses are identified by their similarity to a sector-form model in the template matching process. To calculate the similarity, four features are applied: 1) average pixel value; 2) standard deviation of pixel values; 3) standard correlation coefficient defined by the sector-form model; and 4) concentration feature determined from the density gradient. After employing the new method to 335 digitized mammograms, the detection sensitivity for the partial loss masses jumped from 70% to 90% when the number of false positives was kept constant (0.2/image). Moreover, a combination of the existing method and the new method improved the true-positive rate up to 97%. Such results indicate that the new technique may improve the performance of our computer-aided diagnosis system for mammographic masses effectively.
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Affiliation(s)
- Y Hatanaka
- Department of Information Science, Faculty of Engineering, Gifu University, Gifu-shi, Japan.
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