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Tabata H, Kinoshita M, Taniguchi M, Ooi M. Clinical application of headache impact test (HIT)-6 and epworth sleepiness scale (ESS) for sleep apnea headache. Sleep Science Practice 2023. [DOI: 10.1186/s41606-023-00084-2] [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: 02/25/2023] Open
Abstract
Abstract
Background
Sleep apnea headache is a major symptom accompanying obstructive sleep apnea (OSA), but relatively little evidence has been reported on the magnitude of its negative effects on patients or the evaluation of therapeutic effects. We quantitatively assessed sleep apnea headache using the Epworth sleepiness scale (ESS) and headache impact test (HIT)-6.
Methods
The first part of this study enrolled 86 patients (72 male; mean [± standard deviation] age 53.2 ± 13.8 years) who had been diagnosed with OSA by polysomnography in our sleep center and investigated the prevalence and characteristics of sleep apnea headache. The second part enrolled 21 patients (12 male; mean age, 47.5 ± 13.0 years) diagnosed with sleep apnea headache by polysomnography and/or peripheral arterial tonometry and evaluated the effects of OSA therapy on headache. Medical records including ESS, HIT-6, and polysomnographic data were retrospectively analyzed.
Results
The prevalence of sleep apnea headache among OSA patients was 22.1%, and was higher in female (50.0%) than in male (16.7%). The proportion of N3 and HIT-6 score showed a significant negative correlation (Pearson’s R = -0.51, p < 0.05). In female, median apnea–hypopnea index (AHI) was significantly lower in patients with headache (26.1 /h [interquartile range 21.4–29.6 /h]) than in patients without (54.2 /h [41.3–73.9 /h], p < 0.05, Wilcoxon rank-sum test). HIT-6 and ESS scores improved from 56.4 ± 9.7 to 45.9 ± 8.4 and from 9.0 ± 4.4 to 5.3 ± 4.2 in patients with oral appliance (OA), and from 54.3 ± 10.7 to 44.6 ± 6.1 and from 10.0 ± 4.0 to 4.9 ± 2.9 with continuous positive airway pressure (CPAP). In patients with good CPAP adherence, these scores improved from 58.1 ± 10.8 to 44.0 ± 6.0 and from 9.6 ± 3.8 to 3.6 ± 1.7.
Conclusion
Among patients with OSA, prevalence of sleep apnea headache was higher in female than in male. In female, headache was associated with relatively mild OSA. OA showed substantial effects on headache in mild to moderate OSA patients. CPAP adherence was important for improving the headache. HIT-6 score appears useful for the diagnosis and management of sleep apnea headache.
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Kikuta J, Kamagata K, Abe M, Andica C, Saito Y, Takabayashi K, Uchida W, Naito H, Tabata H, Wada A, Tamura Y, Kawamori R, Watada H, Aoki S. Effects of Arterial Stiffness on Cerebral WM Integrity in Older Adults: A Neurite Orientation Dispersion and Density Imaging and Magnetization Transfer Saturation Imaging Study. AJNR Am J Neuroradiol 2022; 43:1706-1712. [PMID: 36396335 DOI: 10.3174/ajnr.a7709] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/15/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND PURPOSE Arterial stiffness is reported to be able to cause axonal demyelination or degeneration. The present study aimed to use advanced MR imaging techniques to examine the effect of arterial stiffness on the WM microstructure among older adults. MATERIALS AND METHODS Arterial stiffness was measured using the cardio-ankle vascular elasticity index (CAVI). The high-CAVI (mean CAVI ≥ 9 points) and the low-CAVI groups (mean CAVI < 9 points) were created. The neuronal fiber integrity of the WM was evaluated by neurite orientation dispersion and density imaging and magnetization transfer saturation imaging. Tract-Based Spatial Statistics and the tracts-of-interest analysis were performed. Specific WM regions (corpus callosum, internal capsule, anterior thalamic radiation, corona radiata, superior longitudinal fasciculus, forceps minor, and inferior fronto-occipital fasciculus) were selected in the tracts-of-interest analysis. RESULTS In Tract-Based Spatial Statistics, the high-CAVI group showed a significantly lower myelin volume fraction value in the broad WM and significantly higher radial diffusivity and isotropic volume fraction values in the corpus callosum, forceps minor, inferior fronto-occipital fasciculus, internal capsule, corona radiata, and anterior thalamic radiation than the low-CAVI group. In tracts-of-interest analysis using multivariate linear regression, significant associations were found between the mean CAVI and radial diffusivity in the anterior thalamic radiation and the corona radiata; isotropic volume fraction in the anterior thalamic radiation and the corona radiata; and myelin volume fraction in the superior longitudinal fasciculus (P < .05). Additionally, partial correlation coefficients were observed for the significant associations of executive function with radial diffusivity and myelin volume fraction (P < .05). CONCLUSIONS Arterial stiffness could be associated with demyelination rather than axonal degeneration.
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Affiliation(s)
- J Kikuta
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - K Kamagata
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - M Abe
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - C Andica
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.).,Faculty of Health Data Science (C.A.), Juntendo University, Chiba, Japan
| | - Y Saito
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - K Takabayashi
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - W Uchida
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - H Naito
- Metabolism and Endocrinology (H.N., Y.T., R.K., H.W.)
| | - H Tabata
- Sportology Center (H.T., Y.T., R.K., H.W.), Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - A Wada
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
| | - Y Tamura
- Metabolism and Endocrinology (H.N., Y.T., R.K., H.W.).,Sportology Center (H.T., Y.T., R.K., H.W.), Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - R Kawamori
- Metabolism and Endocrinology (H.N., Y.T., R.K., H.W.).,Sportology Center (H.T., Y.T., R.K., H.W.), Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - H Watada
- Metabolism and Endocrinology (H.N., Y.T., R.K., H.W.).,Sportology Center (H.T., Y.T., R.K., H.W.), Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - S Aoki
- From the Departments of Radiology (J.K., K.K., M.A., C.A., Y.S., K.T., W.U., A.W., S.A.)
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Yokoyama S, Fujita Y, Matsumura S, Yoshimura T, Kinoshita I, Watanabe T, Tabata H, Tsuji T, Ozawa S, Tamaki T, Nakatani Y, Oka M. Cribriform carcinoma in the lymph nodes is associated with distant metastasis, recurrence, and survival among patients with node-positive colorectal cancer. Br J Surg 2021; 108:e111-e112. [PMID: 33793704 DOI: 10.1093/bjs/znaa123] [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] [Received: 10/12/2020] [Accepted: 11/15/2020] [Indexed: 11/13/2022]
Abstract
Cribriform lymph node pattern is an independent risk factor for metachronous or synchronous distant metastasis in patients with stage III and IV node-positive colorectal cancer. Multivariable analysis in patients with stage III disease indicated that the cribriform pattern of carcinoma in the lymph nodes was an independent risk factor for recurrence and survival. Kaplan–Meier analysis demonstrated that the group with stage III cribriform-type lymph node carcinoma had shorter recurrence-free and overall survival times than the stage III group with the tubular type (P < 0.001).
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Affiliation(s)
- S Yokoyama
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - Y Fujita
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - S Matsumura
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - T Yoshimura
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - I Kinoshita
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - T Watanabe
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - H Tabata
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - T Tsuji
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - S Ozawa
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - T Tamaki
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - Y Nakatani
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
| | - M Oka
- Department of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan
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Kobayashi H, Okada A, Tabata H, Shoin W, Okano T, Yoshie K, Shoda M, Kuwahara K. P1496Impact of electrical reverse remodeling by cardiac resynchronization therapy on adverse cardiac events in patients of heart failure with reduced ejection fraction. Europace 2020. [DOI: 10.1093/europace/euaa162.266] [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: 11/14/2022] Open
Abstract
Abstract
Background
Recently, structural reverse remodeling (SRR) and electrical reverse remodeling (ERR) after cardiac resynchronization therapy (CRT) have been reported in patients of heart failure with reduced ejection fraction (HFrEF). However the relationship between ERR and subsequent adverse cardiac events is still unknown. We aimed to elucidate the impact of ERR after CRT on the occurrence of heart failure events and ventricular arrhythmias.
Methods
A total of 36 HFrEF patients who underwent newly CRT implantation were investigated retrospectively. The intrinsic QRS duration (iQRSd) had been recorded before and more than 6 months after CRT implantation. Biventricular pacing was temporarily turned off during measurement of iQRSd. ERR was defined as positive shortening of iQRSd and SRR was defined as reduction of left ventricular end systolic volume by more than 15% after CRT implantation. The primary endpoint was a composite of all cause death, heart failure hospitalizations and ventricular tachyarrhythmia events.
Results
ERR was observed in 17 patients (47.2%) and SRR in 22 patients (61.1%). The group with ERR included more patients with lower NYHA class prior to CRT and patients with SRR. The primary endpoint was observed in 15 patients (51.4 %) for a median of 181 [63, 367] days during follow-up. Kaplan-Meier analysis revealed that the group without ERR was poor prognosis compared with the group with ERR (p = 0.022, Log-rank test).
Conclusion
Patients of HFrEF with ERR after CRT may have fewer adverse cardiac events such as worsening heart failure or ventricular arrhythmia events from this short-term study.
Abstract Figure. Adverse cardiac events and ERR
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Affiliation(s)
- H Kobayashi
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - A Okada
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - H Tabata
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - W Shoin
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - T Okano
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - K Yoshie
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - M Shoda
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
| | - K Kuwahara
- Shinshu University Hospital, Cardiovascular Medecine, Matsumoto, Japan
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Yoshie K, Okada A, Seki S, Tabata H, Shoin W, Kobayashi H, Okano T, Motoki H, Shoda M, Kuwahara K. P1353Echocardiographic predictor of sick sinus syndrome following catheter ablation of persistent atrial fibrillation. Europace 2020. [DOI: 10.1093/europace/euaa162.107] [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: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Abbott Medical Japan, Medtronic Japan, Boston Scientific Japan, Biotronic Japan, Japan Life Line
Background / Introduction
Although sick sinus syndrome(SSS) can be associated with atrial fibrillation(AF), predictive factors of SSS following catheter ablation(CA) of persistent atrial fibrillation(perAF) are not well known.
Purpose
We investigated echocardiographic parameters to predict occurrence of SSS after restoration of sinus rhythm by CA for perAF patients.
Methods
Ninety-eight consecutive perAF patients from June 2014 to May 2018 treated with CA were retrospectively reviewed. Twelve patients(12%, SSS group) developed SSS after successful CA and 86 patients(88%, non-SSS group) did not. Baseline characteristics, blood exam, and echocardiographic findings(RA area size, LA area size, EF, etc) before AF CA were analyzed using Student’s t test, Mann-Whitney test, Chi-square test and Univariate analysis. Multivariate logistic analysis was then performed using those parameters. The atrial area size was calculated from 4 chamber view at the atrial end- systole.
Results
The multivariate analysis for predictive factors of SSS is shown in the table. Right atrium(RA) area could predict SSS(17.3 ± 4.8cm2 vs. 14.7 ± 3.6cm2, odds ratio 1.468; 95% confidence interval 1.088 to 1.981, p = 0.012). Gender (female) was also an independent predictor(4/12 (33%) vs. 8/86 (9%), odds ratio 39.832; 95% confidence interval 2.589 to 612.938, p = 0.008). The other echocardiographical findings(LA area size, EF, etc), baseline characteristics and blood exam results were not related to SSS after successful CA of perAF patients.
Conclusions
The large RA area size and gender (female) could predict SSS in perAF patients after restoration of sinus rhythm by successful CA. We may need to inform possible SSS after CA to female patients with a large RA before CA.
Multivariate Logistic analysis Total(N = 98) SSS group (N = 12) Non SSS group (N = 86) Odds ratio 95% CI P-value Age 64(58-69) 68(60-72) 63(57-69) 1.032 0.929-1.145 0.560 Gender/Female 12(12%) 4(33%) 8(9%) 39.832 2.589-612.938 0.008 CKD 27(28%) 6(50%) 21(24%) 1.264 0.179-8.945 0.814 BNP 91(53-180) 206(167-304) 82(48-169) 1.003 0.993-1.012 0.609 RDW 45.1 ± 3.9 46.4 ± 4.8 44.9 ± 3.8 1.242 0.971-1.588 0.085 RA area 15.1 ± 3.8 17.3 ± 4.8 14.7 ± 3.6 1.468 1.088-1.981 0.012 LA area 24.2(17.0-24.9) 24.4(17.7-26.3) 24.1(16.8-24.4) 0.967 0.803-1.165 0.726 Right atrium area and gender were the independent predictor of SSS in persistent atrial fibrillation patients after restoration of sinus rhythm
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Affiliation(s)
- K Yoshie
- Shinshu University Hospital, Matsumoto, Japan
| | - A Okada
- Shinshu University Hospital, Matsumoto, Japan
| | - S Seki
- Shinshu University Hospital, Matsumoto, Japan
| | - H Tabata
- Shinshu University Hospital, Matsumoto, Japan
| | - W Shoin
- Shinshu University Hospital, Matsumoto, Japan
| | - H Kobayashi
- Shinshu University Hospital, Matsumoto, Japan
| | - T Okano
- Shinshu University Hospital, Matsumoto, Japan
| | - H Motoki
- Shinshu University Hospital, Matsumoto, Japan
| | - M Shoda
- Shinshu University Hospital, Matsumoto, Japan
| | - K Kuwahara
- Shinshu University Hospital, Matsumoto, Japan
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Tabata H, Kitaguchi H. Hemicrania Continua Subsequent to Vertebral Artery Dissection: A Case Report. J Stroke Cerebrovasc Dis 2019; 28:104443. [DOI: 10.1016/j.jstrokecerebrovasdis.2019.104443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 09/09/2019] [Accepted: 09/22/2019] [Indexed: 11/16/2022] Open
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Uchicado Y, Yoshino S, Takumi T, Kanda D, Ohmure K, Tabata H, Anzaki K, Ohishi M. P1695Impaired endothelial function is associated with neointimal abnormalities after drug-eluting stents deployment assessed by optical coherence tomography in patients with ischemic heart disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Uchicado
- Kagoshima University, Department of Caridovscular Medicine and Hypertension, Kagoshima, Japan
| | - S Yoshino
- Kagoshima University, Department of Caridovscular Medicine and Hypertension, Kagoshima, Japan
| | - T Takumi
- Kagoshima University, Department of Caridovscular Medicine and Hypertension, Kagoshima, Japan
| | - D Kanda
- Kagoshima University, Department of Caridovscular Medicine and Hypertension, Kagoshima, Japan
| | - K Ohmure
- Izumi Regional Medical Center, Department of Cardiology, Akune, Japan
| | - H Tabata
- Izumi Regional Medical Center, Department of Cardiology, Akune, Japan
| | - K Anzaki
- Izumi Regional Medical Center, Department of Cardiology, Akune, Japan
| | - M Ohishi
- Kagoshima University, Department of Caridovscular Medicine and Hypertension, Kagoshima, Japan
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Tabata H, Hashimoto K, Shindo T, Kobayashi K, Fukuta F, Tanaka T, Masumori N. 150 A developed simple algorithm for the decision-making on neurovascular bundle preservation does not compromise surgical margins in high risk prostate cancer. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.151] [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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Tabata H, Kuriyama A, Yamao F, Kitaguchi H, Shindo K. Suvorexant-Induced Dream Enactment Behavior in Parkinson Disease: A Case Report. J Clin Sleep Med 2017; 13:759-760. [PMID: 28212694 DOI: 10.5664/jcsm.6600] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 11/22/2016] [Accepted: 01/23/2017] [Indexed: 11/13/2022]
Abstract
ABSTRACT Suvorexant is a new insomnia drug, and it is generally safe and well tolerated. Here, we report a rare but potentially important adverse effect of suvorexant in a patient with Parkinson disease.
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Affiliation(s)
- Hiromitsu Tabata
- Department of Neurology, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
| | - Akira Kuriyama
- Department of General Medicine, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
| | - Fusae Yamao
- Department of Neurology, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
| | - Hiroshi Kitaguchi
- Department of Neurology, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
| | - Katsuro Shindo
- Department of Neurology, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
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Ojima T, Nakamori M, Nakamura M, Katsuda M, Hayata K, Kato T, Kitadani J, Tabata H, Takeuchi A, Yamaue H. Randomized clinical trial of landiolol hydrochloride for the prevention of atrial fibrillation and postoperative complications after oesophagectomy for cancer. Br J Surg 2017; 104:1003-1009. [DOI: 10.1002/bjs.10548] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/15/2016] [Accepted: 02/24/2017] [Indexed: 12/15/2022]
Abstract
Abstract
Background
Atrial fibrillation is common after oesophageal surgery. The aim of this study was to evaluate whether landiolol hydrochloride was effective and safe in the prevention of atrial fibrillation after oesophagectomy, and to see whether a reduction in incidence of atrial fibrillation would reduce other postoperative complications.
Methods
This single-centre study enrolled patients scheduled for transthoracic oesophagectomy in a randomized, double-blind, placebo-controlled trial between March 2013 and January 2016. Enrolled patients were randomized with a 1 : 1 parallel allocation ratio to either landiolol prophylaxis or placebo. The primary endpoint was the occurrence of atrial fibrillation after oesophagectomy. Secondary endpoints were incidence of postoperative complications, and effects on haemodynamic and inflammatory indices.
Results
One hundred patients were enrolled, 50 in each group. Postoperative atrial fibrillation occurred in 15 patients (30 per cent) receiving placebo versus five (10 per cent) receiving landiolol (P = 0·012). The overall incidence of postoperative complications was significantly lower in the landiolol group (P = 0·046). In the landiolol group, postoperative heart rate was suppressed effectively, but the decrease in BP was not harmful. The interleukin 6 level was significantly lower on days 3 and 5 after surgery in the landiolol group (P = 0·001 and P = 0·002 respectively).
Conclusion
Landiolol was effective and safe in preventing atrial fibrillation after oesophagectomy. Registration number: UMIN000010648 (http://www.umin.ac.jp/ctr/).
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Affiliation(s)
- T Ojima
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - M Nakamori
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - M Nakamura
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - M Katsuda
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - K Hayata
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - T Kato
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - J Kitadani
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - H Tabata
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - A Takeuchi
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
| | - H Yamaue
- Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8510, Japan
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Kuriyama A, Tabata H. Suvorexant for the treatment of primary insomnia: A systematic review and meta-analysis. Sleep Med Rev 2016; 35:1-7. [PMID: 28365447 DOI: 10.1016/j.smrv.2016.09.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 09/16/2016] [Accepted: 09/19/2016] [Indexed: 11/25/2022]
Abstract
Suvorexant is a dual orexin receptor agonist and is currently approved for the treatment of insomnia in the United States and Japan. We conducted a systematic review and meta-analysis to assess the efficacy and safety of suvorexant for the treatment of primary insomnia. We searched PubMed, EMBASE, and the Cochrane central register of controlled trials, contacted a relevant pharmaceutical company, and accessed websites of the U.S. Food and Drug Administration (FDA) and Pharmaceuticals and Medical Devices Agency (PMDA) for published and unpublished data. A total of four randomized trials involving 3076 patients with primary insomnia were included in our analysis. Our analysis suggested that suvorexant was associated with significant improvements in subjective time to sleep onset, subjective total sleep time, and subjective quality of sleep at 1 mo and 3 mo. Somnolence, fatigue, and abnormal dreams were the most common adverse effects. We concluded that suvorexant was associated with improvement in some sleep parameters and some adverse effects. To determine the place of suvorexant in the treatment of insomnia, comparative effectiveness trials are needed.
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Affiliation(s)
- Akira Kuriyama
- Department of General Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama 710-8602, Japan.
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Harada N, Ishihara M, Horiuchi H, Ito Y, Tabata H, Suzuki YA, Nakano Y, Yamaji R, Inui H. Mogrol Derived from Siraitia grosvenorii Mogrosides Suppresses 3T3-L1 Adipocyte Differentiation by Reducing cAMP-Response Element-Binding Protein Phosphorylation and Increasing AMP-Activated Protein Kinase Phosphorylation. PLoS One 2016; 11:e0162252. [PMID: 27583359 PMCID: PMC5008739 DOI: 10.1371/journal.pone.0162252] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/21/2016] [Indexed: 12/03/2022] Open
Abstract
This study investigated the effects of mogrol, an aglycone of mogrosides from Siraitia grosvenorii, on adipogenesis in 3T3-L1 preadipocytes. Mogrol, but not mogrosides, suppressed triglyceride accumulation by affecting early (days 0–2) and late (days 4–8), but not middle (days 2–4), differentiation stages. At the late stage, mogrol increased AMP-activated protein kinase (AMPK) phosphorylation and reduced glycerol-3-phosphate dehydrogenase activity. At the early stage, mogrol promoted AMPK phosphorylation, inhibited the induction of CCAAT/enhancer-binding protein β (C/EBPβ; a master regulator of adipogenesis), and reduced 3T3-L1 cell contents (e.g., clonal expansion). In addition, mogrol, but not the AMPK activator AICAR, suppressed the phosphorylation and activity of the cAMP response element-binding protein (CREB), which regulates C/EBPβ expression. These results indicated that mogrol suppressed adipogenesis by reducing CREB activation in the initial stage of cell differentiation and by activating AMPK signaling in both the early and late stages of this process.
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Affiliation(s)
- Naoki Harada
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
- * E-mail: (NH); (HI)
| | - Mikako Ishihara
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Hiroko Horiuchi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Yuta Ito
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
- Biochemical Laboratory, Saraya Company, Ltd., Kashiwara, Osaka, Japan
| | - Hiromitsu Tabata
- Biochemical Laboratory, Saraya Company, Ltd., Kashiwara, Osaka, Japan
| | - Yasushi A. Suzuki
- Biochemical Laboratory, Saraya Company, Ltd., Kashiwara, Osaka, Japan
| | - Yoshihisa Nakano
- Center for Research and Development of Bioresources, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Ryoichi Yamaji
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Hiroshi Inui
- Center for Research and Development of Bioresources, Osaka Prefecture University, Sakai, Osaka, Japan
- Department of Nutrition, Osaka Prefecture University, Habikino, Osaka, Japan
- * E-mail: (NH); (HI)
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Abstract
Correct neuronal migration is crucial for the brain architecture and function. During brain development, excitatory and inhibitory neurons generated in the ventricular zone (VZ) of the dorsal telencephalon and ganglionic medial eminence, respectively, move to their final destinations in tightly regulated spatiotemporal manners. While a variety of morphological methods have been applied to neurobiology, in utero electroporation (IUE) technique is one of the most powerful tools for rapid gain- and loss-of-function studies of brain development. This method enables us to introduce genes of interest into VZ progenitor and stem cells of rodent embryos, and to observe resulting phenotypes such as proliferation, migration, and cell morphology at later stages. In this chapter, we first summarize basic immunohistochemistry methods that are foundations for any advanced methods and showed data on the distribution of Sept6, Sept9, and Sept14 as examples. Then, IUE method is described where functional analyses of Sept14 during brain development are used as examples. We subsequently refer to the in vivo electroporation (IVE)-mediated gene transfer, which is conceptually the same method as IUE, into granule cells of hippocampal dentate gyrus in neonatal mice. Finally, an IUE-based time-lapse imaging method is explained as an advanced technique for the analyses of cortical neuron migration. IUE and IVE methods and the application would contribute greatly to the morphological analyses of septins as well as other molecules to elucidate their neuronal functions and pathophysiological roles in various neurological and psychiatric disorders.
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Affiliation(s)
- H Ito
- Aichi Human Service Center, Kasugai, Japan
| | | | - H Tabata
- Aichi Human Service Center, Kasugai, Japan
| | - K Nagata
- Aichi Human Service Center, Kasugai, Japan; Nagoya University Graduate School of Medicine, Nagoya, Japan
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14
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Kubo T, Fujino Y, Matsuda S, Nakamura T, Kunimoto M, Kadowaki K, Tabata H, Tsuchiya T, Odoi H, Oyama I. Risk of Hypertension and Impaired Glucose Tolerance among Two and Three Shift Workers. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv097.030] [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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15
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Nagai T, Hamabe A, Arakawa J, Konishi T, Hisadome H, Yoshida M, Tabata H, Ito T, Mitsumaru A, Tanaka Y, Uehata A. Mitral valve aneurysm. Ultraschall Med 2013; 34:69-70. [PMID: 23229413 DOI: 10.1055/s-0032-1330324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- T Nagai
- Cardiology, Japan Self Defense Forces Central Hospital, Tokyo, Japan.
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16
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Abe Y, Aberle C, Akiri T, dos Anjos JC, Ardellier F, Barbosa AF, Baxter A, Bergevin M, Bernstein A, Bezerra TJC, Bezrukhov L, Blucher E, Bongrand M, Bowden NS, Buck C, Busenitz J, Cabrera A, Caden E, Camilleri L, Carr R, Cerrada M, Chang PJ, Chimenti P, Classen T, Collin AP, Conover E, Conrad JM, Cormon S, Crespo-Anadón JI, Cribier M, Crum K, Cucoanes A, D'Agostino MV, Damon E, Dawson JV, Dazeley S, Dierckxsens M, Dietrich D, Djurcic Z, Dracos M, Durand V, Efremenko Y, Elnimr M, Endo Y, Etenko A, Falk E, Fallot M, Fechner M, von Feilitzsch F, Felde J, Fernandes SM, Franco D, Franke AJ, Franke M, Furuta H, Gama R, Gil-Botella I, Giot L, Göger-Neff M, Gonzalez LFG, Goodman MC, Goon JTM, Greiner D, Guillon B, Haag N, Hagner C, Hara T, Hartmann FX, Hartnell J, Haruna T, Haser J, Hatzikoutelis A, Hayakawa T, Hofmann M, Horton-Smith GA, Ishitsuka M, Jochum J, Jollet C, Jones CL, Kaether F, Kalousis L, Kamyshkov Y, Kaplan DM, Kawasaki T, Keefer G, Kemp E, de Kerret H, Kibe Y, Konno T, Kryn D, Kuze M, Lachenmaier T, Lane CE, Langbrandtner C, Lasserre T, Letourneau A, Lhuillier D, Lima HP, Lindner M, Liu Y, López-Castanõ JM, LoSecco JM, Lubsandorzhiev BK, Lucht S, McKee D, Maeda J, Maesano CN, Mariani C, Maricic J, Martino J, Matsubara T, Mention G, Meregaglia A, Miletic T, Milincic R, Milzstajn A, Miyata H, Motta D, Mueller TA, Nagasaka Y, Nakajima K, Novella P, Obolensky M, Oberauer L, Onillon A, Osborn A, Ostrovskiy I, Palomares C, Peeters SJM, Pepe IM, Perasso S, Perrin P, Pfahler P, Porta A, Potzel W, Queval R, Reichenbacher J, Reinhold B, Remoto A, Reyna D, Röhling M, Roth S, Rubin HA, Sakamoto Y, Santorelli R, Sato F, Schönert S, Schoppmann S, Schwan U, Schwetz T, Shaevitz MH, Shrestha D, Sida JL, Sinev V, Skorokhvatov M, Smith E, Spitz J, Stahl A, Stancu I, Strait M, Stüken A, Suekane F, Sukhotin S, Sumiyoshi T, Sun Y, Sun Z, Svoboda R, Tabata H, Tamura N, Terao K, Tonazzo A, Toups M, Trinh Thi HH, Veyssiere C, Wagner S, Watanabe H, White B, Wiebusch C, Winslow L, Worcester M, Wurm M, Yanovitch E, Yermia F, Zbiri K, Zimmer V. Indication of reactor ν(e) disappearance in the Double Chooz experiment. Phys Rev Lett 2012; 108:131801. [PMID: 22540693 DOI: 10.1103/physrevlett.108.131801] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Indexed: 05/31/2023]
Abstract
The Double Chooz experiment presents an indication of reactor electron antineutrino disappearance consistent with neutrino oscillations. An observed-to-predicted ratio of events of 0.944±0.016(stat)±0.040(syst) was obtained in 101 days of running at the Chooz nuclear power plant in France, with two 4.25 GW(th) reactors. The results were obtained from a single 10 m(3) fiducial volume detector located 1050 m from the two reactor cores. The reactor antineutrino flux prediction used the Bugey4 flux measurement after correction for differences in core composition. The deficit can be interpreted as an indication of a nonzero value of the still unmeasured neutrino mixing parameter sin(2)2θ(13). Analyzing both the rate of the prompt positrons and their energy spectrum, we find sin(2)2θ(13)=0.086±0.041(stat)±0.030(syst), or, at 90% C.L., 0.017<sin(2)2θ(13)<0.16.
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Affiliation(s)
- Y Abe
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan
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Matsui H, Nomura W, Yatsui T, Ohtsu M, Tabata H. Optical dynamics of energy-transfer from a CdZnO quantum well to a proximal Ag nanostructure. Opt Lett 2011; 36:3735-3737. [PMID: 21964080 DOI: 10.1364/ol.36.003735] [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: 05/31/2023]
Abstract
We studied photoluminescence (PL) and energy-transfer dynamics in a hybrid structure comprising a Cd(0.08)Zn(0.92)O quantum well (QW) and an Ag nanostructure. The observed PL quenching was dependent on the electronic states in the QW. Quenching occurred at low temperature where excited carriers recombined radiatively because of excitonic localization, which disappeared with increasing temperature due to delocalization of excitons. Furthermore, nanostructured Ag surfaces produced local surface plasmon (LSP) absorption that was resonant with the PL peak energy of the QW emission. These results indicate that the recombination energy of excitons transfers nonradiatively to induce LSP excitation, which was revealed using time-resolved PL measurements.
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Affiliation(s)
- H Matsui
- Department of Bioengineering, School of Engineering, University of Tokyo, Tokyo 113-8656, Japan. ‑tokyo.c.jp
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18
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Wongwiriyapan W, Okabayashi Y, Minami S, Itabashi K, Ueda T, Shimazaki R, Ito T, Oura K, Honda S, Tabata H, Katayama M. Hydrogen sensing properties of protective-layer-coated single-walled carbon nanotubes with palladium nanoparticle decoration. Nanotechnology 2011; 22:055501. [PMID: 21178258 DOI: 10.1088/0957-4484/22/5/055501] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Protective-layer-coated single-walled carbon nanotubes (SWNTs) with palladium nanoparticle decoration (Pd-SiO(2)-SWNTs) were fabricated and their sensing properties for hydrogen (H(2)) were investigated. SWNTs were coated with a 3-4 nm thick SiO(2) layer by pulsed laser deposition and subsequently decorated with Pd nanoparticles by electron beam evaporation. Even though the SWNTs were completely surrounded by a protective layer, Pd-SiO(2)-SWNTs responded to H(2) down to a concentration of 1 part per million. Compared with the Pd nanoparticle-decorated SWNTs without a protective layer (Pd-SWNTs), Pd-SiO(2)-SWNTs exhibited highly stable sensor responses with variations of less than 20%; Pd-SWNTs showed a variation of 80%. The density of the Pd-SWNTs significantly decreased after the sensing test, while that of the Pd-SiO(2)-SWNTs with the netlike structure remained unchanged. The hydrogen sensing mechanism of the Pd-SiO(2)-SWNTs was attributed to the chemical gating effect on the SWNTs due to dipole layer formation by hydrogen atoms trapped at the Pd-SiO(2) interface. Moreover, the relationship between H(2) concentration and sensor response can be described by the Langmuir isotherm for dissociative adsorption.
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Affiliation(s)
- W Wongwiriyapan
- College of Nanotechnology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
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19
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Li H, Sonobe Y, Tabata H, Liang J, Jin S, Doi Y, Kawanokuchi J, Takeuchi H, Mizuno T, Suzumura A. Tumor necrosis factor-α promotes granulocyte-macrophage colony-stimulating factor-stimulated microglia to differentiate into competent dendritic cell-like antigen-presenting cells. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1759-1961.2010.00016.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Hayashi R, Miura K, Tabata H, Kawano K. The temporal property difference and the way of interactions between monocular and binocular motion mechanisms. J Vis 2010. [DOI: 10.1167/7.9.743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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21
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Tabata H, Shimizu N, Wada Y, Miura K, Kawano K. Initiation of the optokinetic response (OKR) in mice. J Vis 2010; 10:13.1-17. [PMID: 20143906 DOI: 10.1167/10.1.13] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Accepted: 12/11/2009] [Indexed: 11/24/2022] Open
Abstract
To study the initial part of the mouse optokinetic response, OKR (approximately 500 ms from the onset of visual stimulus motion), we recorded the ocular response to a vertical sinusoidal grating moving at a constant velocity. We found that the magnitude of the response monotonically increased as the stimulus contrast increased. The response showed a narrow band-pass property for the spatiotemporal frequency, with the largest sustained response observed at 0.125 cycle/deg and 1.5 Hz. We also found that temporal frequencies higher than 1.5 Hz elicited transient increase in the eye velocity, but weak or no sustained eye movements. Thus the initial OKR in mice is characterized by the spatiotemporal frequency of the visual stimuli. Our results suggest that the initial OKR contains two components: a transient that diminishes within approximately 200 ms, and a tonic that is maintained for more than 400 ms, and that the initial part of the OKR in mice is an appropriate measurement parameter for studies of the visual and motor systems, like ocular following response (OFR) in primates.
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Affiliation(s)
- Hiromitsu Tabata
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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22
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Tabata H, Ishikawa O, Ohnishi K, Ishikawa H. Kimura’s Disease with Marked Proliferation of HLA-DR +CD4 + T Cells in the Skin, Lymph Node and Peripheral Blood. Dermatology 2009; 184:145-8. [PMID: 1353997 DOI: 10.1159/000247525] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A 41-year-old female had atopic dermatitis-like skin lesions since the age of 21, and for the past 6 years many skin tumors developed on the body, lower extremities and other areas. The histological picture of the tumor, eosinophilia and high IgE in the peripheral blood were consistent with a diagnosis of Kimura's disease. Although the tumors were markedly reduced by oral prednisolone administration, thereafter papules appeared disseminated over the body with swelling of superficial lymph nodes. Immunohistochemical examination indicated marked proliferation of HLA-DR+CD4+ T cells in the skin and lymph nodes, and two-color flow cytometry confirmed it in the lymph nodes and peripheral blood.
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Affiliation(s)
- H Tabata
- Department of Dermatology, Gunma University School of Medicine, Maebashi, Japan
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Taki M, Miura K, Tabata H, Hisa Y, Kawano K. The effects of prolonged viewing of motion on short-latency ocular following responses. Exp Brain Res 2009; 195:195-205. [PMID: 19308363 DOI: 10.1007/s00221-009-1768-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2008] [Accepted: 03/03/2009] [Indexed: 11/26/2022]
Abstract
The adaptive effects of prolonged viewing of conditioning motion on ocular following responses (OFRs) elicited by brief test motion of a random-dot pattern were studied in humans. We found that the OFRs were significantly reduced when the directions of the conditioning and test motions were the same. The effect of conditioning motion was still observed when the speeds of the conditioning and test motions did not match. The effect was larger when the conditioning duration was longer, and decayed over time with increased temporal separation between the conditioning and test periods. These results are consistent with the characteristics of motion adaptation on the initial smooth pursuit responses. We also obtained data suggesting that the persistence of the effect depends on visual stimulation in the time between the conditioning and test periods, and that the presence of a stationary visual stimulus facilitates recovery from the motion adaptation.
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Affiliation(s)
- Masakatsu Taki
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
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24
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Fukumura H, Tonari N, Hasuike N, Harima H, Kisoda K, Koide T, Seki M, Tabata H. Raman scattering study of multiferroic Ho(3)Fe(5)O(12) thin films. J Phys Condens Matter 2009; 21:064221. [PMID: 21715923 DOI: 10.1088/0953-8984/21/6/064221] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ho(3)Fe(5)O(12) crystallizes in a body-centered cubic lattice and shows no ferroelectricity because of its highly symmetric (centrosymmetric) crystal structure. However, in heteroepitaxially grown thin films, Ho(3)Fe(5)O(12) may exhibit ferroelectricity because of lattice strains induced by the substrate. In this work, heteroepitaxial films of Ho(3)Fe(5)O(12) were grown with different thicknesses of 50-160 nm and studied by x-ray diffraction and Raman scattering. The results were compared with those of bulk polycrystals to characterize residual strains. At room temperature, Raman spectra of films revealed a phonon frequency shift from those of bulk samples, showing lattice distortion. There was a difference in the lattice distortion scheme between the thinner and thicker films. Results of x-ray diffraction were well correlated with the Raman data. Raman measurements at 300-800 K showed the existence of lattice strain up to ∼650 K. This suggests a remanent-polarization character of Ho(3)Fe(5)O(12) films up to this temperature. Closeness between the magnetic ordering temperature T(N) = 567 K and T(C)∼650 K may bring us the ideal multiferroic material with an enhanced magnetoelectric effect at room temperature.
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Affiliation(s)
- H Fukumura
- Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585, Japan
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Hayashi R, Miura K, Tabata H, Kawano K. Eye Movements in Response to Dichoptic Motion: Evidence for a Parallel-Hierarchical Structure of Visual Motion Processing in Primates. J Neurophysiol 2008; 99:2329-46. [DOI: 10.1152/jn.01316.2007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Brief movements of a large-field visual stimulus elicit short-latency tracking eye movements termed “ocular following responses” (OFRs). To address the question of whether OFRs can be elicited by purely binocular motion signals in the absence of monocular motion cues, we measured OFRs from monkeys using dichoptic motion stimuli, the monocular inputs of which were flickering gratings in spatiotemporal quadrature, and compared them with OFRs to standard motion stimuli including monocular motion cues. Dichoptic motion did elicit OFRs, although with longer latencies and smaller amplitudes. In contrast to these findings, we observed that other types of motion stimuli categorized as non-first-order motion, which is undetectable by detectors for standard luminance-defined (first-order) motion, did not elicit OFRs, although they did evoke the sensation of motion. These results indicate that OFRs can be driven solely by cortical visual motion processing after binocular integration, which is distinct from the process incorporating non-first-order motion for elaborated motion perception. To explore the nature of dichoptic motion processing in terms of interaction with monocular motion processing, we further recorded OFRs from both humans and monkeys using our novel motion stimuli, the monocular and dichoptic motion signals of which move in opposite directions with a variable motion intensity ratio. We found that monocular and dichoptic motion signals are processed in parallel to elicit OFRs, rather than suppressing each other in a winner-take-all fashion, and the results were consistent across the species.
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Tabata H, Miura K, Kawano K. Trial-by-trial updating of the gain in preparation for smooth pursuit eye movement based on past experience in humans. J Neurophysiol 2007; 99:747-58. [PMID: 18077667 DOI: 10.1152/jn.00714.2007] [Citation(s) in RCA: 20] [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] [Indexed: 11/22/2022] Open
Abstract
To understand how the CNS uses past experiences to generate movements that accommodate minute-by-minute environmental changes, we studied the trial-by-trial updating of the gain for initiating smooth pursuit eye movements and how this relates to the history of previous trials. Ocular responses in humans elicited by a small perturbing motion presented 300 ms after appearance of a target were used as a measure of the gain of visuomotor transmission. After the perturbation, the target was either moved horizontally (pursuit trial) or remained in a stationary position (fixation trial). The trial sequence randomly included pursuit and fixation. The amplitude of the response to the perturbation was modulated in a trial-by-trial manner based on the immediately preceding trial, with preceding fixation and pursuit trials decreasing and increasing the gain, respectively. The effect of the previous trial was larger with shorter intertrial intervals, but did not diminish for at least 2,000 ms. A time-series analysis showed that the response amplitude was significantly correlated with the past few trials, with dynamics that could be approximated by a first-order linear system. The results suggest that the CNS integrates recent experiences to set the gain in preparation for upcoming tracking movements in a changing environment.
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Hayashi R, Miura K, Tabata H, Kawano K. Ocular following responses elicited by binocular first-order motion in primates. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.202] [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: 11/26/2022]
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Tabata H, Miura K, Taki M, Matsuura K, Kawano K. Preparatory Gain Modulation of Visuomotor Transmission for Smooth Pursuit Eye Movements in Monkeys. J Neurophysiol 2006; 96:3051-63. [PMID: 16956994 DOI: 10.1152/jn.00412.2006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It has been reported that the visuomotor processing underlying the initiation of smooth pursuit eye movement is modulated in relation to the recent experience of eye movements: the initial pursuit eye velocity is larger after experiencing repeated pursuits than saccades. To assess which parameters of the previously executed pursuits play an essential role in modulating the gain of visuomotor transmission, we recorded the ocular responses of monkeys to a brief perturbing motion of the tracking target injected before the start of the eye movements. First, we compared the perturbation responses among the blocks in which the duration of executing pursuit was varied. We found that the response amplitude increased with the increase of the pursuit duration and it reached a plateau level at 100–200 ms of the duration. Second, a comparison of the perturbation responses in the blocks in which target velocity was different showed a gradual increase of the response as a function of the required pursuit velocity. Third, when the animals repeatedly performed pursuits, the response amplitude gradually increased with increasing interval between the appearance of the target and the onset of perturbation. On the other hand, such an increase was not observed when the animals repeatedly performed saccades. These results suggest that before initiating eye movements, the pursuit system modulates the gain of visuomotor transmission so as to be closely related to the properties of the repeatedly experienced eye movements and this gain modulation is triggered by the target’s appearance.
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Affiliation(s)
- Hiromitsu Tabata
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Konoe-cho, Yoshida, Sakyo-ku, Kyoto-shi, Kyoto 606-8501, Japan.
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Taki M, Miura K, Tabata H, Hisa Y, Kawano K. The effects of preceding moving stimuli on the initial part of smooth pursuit eye movement. Exp Brain Res 2006; 175:425-38. [PMID: 16763830 DOI: 10.1007/s00221-006-0563-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Accepted: 05/13/2006] [Indexed: 11/27/2022]
Abstract
We examined whether there are any adaptive effects on the pursuit initiation after a prolonged exposure to moving visual stimuli. The eye movements of six human subjects were recorded with the scleral search-coil technique or a Dual Purkinje Image Eye-tracker system. A random-dot image appeared on a CRT monitor and moved coherently in one direction (rightward or leftward) at 10 deg/s for 4 s, while the subject fixated on a stationary target (conditioning stimulus). The screen was blanked for 0.2 s, and then the target stepped to the right or left of the center and moved 10 deg/s leftward or rightward. We measured change in the eye position over the open-loop period of the pursuit initiation. When the pursuit target moved in the same direction as the preceding visual stimulus, a significant reduction in the initial tracking responses (55.9% decrease on average) was found. We then studied in detail the properties of the motion adaptation in pursuit initiation by varying the visual conditions systematically and obtained the following findings. When the subjects tracked the target that moved at 10 deg/s, the pursuit initiation was affected not only by the conditioning stimulus of the same speed as the target, but also by those of different speeds. Further, the conditioning stimulus moving at 10 deg/s affected the pursuit initiation not only when the target moved with the same speed but also when it moved at different speeds (more remarkable for slower speeds). The effect of conditioning stimuli on the pursuit initiation was larger when the duration of the conditioning period was longer. The effect of conditioning stimuli decayed as the duration of the blank period became longer. The findings from the present study are consistent with the properties of neurons in the middle temporal area of monkeys.
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Affiliation(s)
- Masakatsu Taki
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Konoe-cho, Yoshida, Sakyo-ku, Kyoto-shi, Kyoto 606-8501, Japan
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Abstract
We studied the effect of the probability of required tracking on the gain of visuomotor transmission for pursuit initiation in monkeys. We recorded the ocular responses to a brief movement (perturbation) of a target located at an eccentric position from the central fixation spot. As soon as the central fixation spot went off, the animal was required to make a saccade to the target if it remained stationary or to track if it moved. The probability of an upcoming ramp motion of the target (horizontal, 20 degrees /sec), requiring pursuit, was varied (target motion probability [TMP] = 0, 0.25, 0.5, 0.75, and 1, which was fixed in a block). We found that the magnitude of the response to the perturbation increased gradually as the TMP increased. The initial pursuit response and the perturbation response showed very similar dependence on the TMP, suggesting that the response to the perturbation could be used as an index of the gain of visuomotor transmission for pursuit initiation. We also found that the changes in the ocular responses after the TMP was changed from one probability to another occurred rapidly (decay constant of only a few trials). These results suggest that the gain of visuomotor transmission in preparing for pursuit is rapidly modulated in accordance with the anticipated future need for pursuit.
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Affiliation(s)
- Hiromitsu Tabata
- Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University, Yoshida, Kyoto-shi, Japan.
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Miura K, Matsuura K, Taki M, Tabata H, Inaba N, Kawano K, Miles FA. The visual motion detectors underlying ocular following responses in monkeys. Vision Res 2005; 46:869-78. [PMID: 16356529 PMCID: PMC2426752 DOI: 10.1016/j.visres.2005.10.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2005] [Revised: 10/20/2005] [Accepted: 10/24/2005] [Indexed: 11/29/2022]
Abstract
Psychophysical evidence indicates that visual motion can be sensed by low-level (energy-based) and high-level (feature-based) mechanisms. The present experiments were undertaken to determine which of these mechanisms mediates the initial ocular following response (OFR) that can be elicited at ultra-short latencies by sudden motion of large-field images. We used the methodology of Sheliga, Chen, Fitzgibbon, and Miles (Initial ocular following in humans: A response to first-order motion energy. Vision Research, 2005a), who studied the initial OFRs of humans, to study the initial OFRs of monkeys. Accordingly, we applied horizontal motion to: (1) vertical square-wave gratings lacking the fundamental ("missing fundamental stimulus") and (2) vertical grating patterns consisting of the sum of two sinusoids of frequency 3f and 4f, which created a repeating pattern with beat frequency, f. Both visual stimuli share a critical property: when subject to 1/4-wavelength steps, their overall pattern (feature) shifts in the direction of the steps, whereas their major Fourier component shifts in the reverse direction (because of spatial aliasing). We found that the initial OFRs of monkeys to these stimuli, like those of humans, were always in the opposite direction to the 1/4-wavelength shifts, i.e., in the direction of the major Fourier component, consistent with detection by (low-level) oriented spatio-temporal filters as in the well-known energy model of motion analysis. Our data indicate that the motion detectors mediating the initial OFR have quantitatively similar properties in monkeys and humans, suggesting that monkeys provide a good animal model for the human OFR.
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Affiliation(s)
- Kenichiro Miura
- Horizontal Medical Research Organization, Graduate School of Medicine, Kyoto University, Japan.
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Shibata T, Tabata H, Schaal S, Kawato M. A model of smooth pursuit in primates based on learning the target dynamics. Neural Netw 2005; 18:213-24. [PMID: 15896569 DOI: 10.1016/j.neunet.2005.01.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2002] [Revised: 01/07/2005] [Accepted: 01/07/2005] [Indexed: 10/25/2022]
Abstract
While the predictive nature of the primate smooth pursuit system has been evident through several behavioural and neurophysiological experiments, few models have attempted to explain these results comprehensively. The model we propose in this paper in line with previous models employing optimal control theory; however, we hypothesize two new issues: (1) the medical superior temporal (MST) area in the cerebral cortex implements a recurrent neural network (RNN) in order to predict the current or future target velocity, and (2) a forward model of the target motion is acquired by on-line learning. We use stimulation studies to demonstrate how our new model supports these hypotheses.
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Affiliation(s)
- Tomohiro Shibata
- Metalearing and Neuromodulation, CREST, Japan Science and Technology Corporation, Kyoto, Japan.
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34
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Tabata H, Hashimoto K, Inaba N, Kawano K. Centripetal bias on preparation for smooth pursuit eye movements based on the anticipation. Exp Brain Res 2004; 156:392-5. [PMID: 15112121 DOI: 10.1007/s00221-004-1917-y] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2004] [Accepted: 03/25/2004] [Indexed: 10/26/2022]
Abstract
It has been reported that a brief perturbation of a stationary target during fixation induces larger eye movement when monkeys anticipate future smooth pursuit than when they do not. Here, we recorded eye movements in human subjects after briefly perturbing a target and the eccentricity of its initial position was changed under three conditions: (1) subjects anticipated saccades for a target that appeared before; (2) they anticipated smooth pursuit for a target that appeared before; and (3) they anticipated smooth pursuit but did not know beforehand where the target started from. We found that in condition 2 substantial eye movements were induced by the perturbation started moving toward the center. However, weak responses were observed in conditions 1 and 3. These results indicate that ocular responses to brief perturbations of the target at eccentric positions are increased with centripetal bias when human subjects prepare for future smooth pursuit.
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Affiliation(s)
- H Tabata
- Neuroscience Research Institute, National Institute of Advanced Industrial Science and Technology, 305-8568, Ibaraki, Japan.
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Taguchi S, Tabata H, Shibata T, Kawato M. Transformation from population codes to firing rate codes by learning: Neural representation of smooth pursuit eye movements. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/scj.10322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Katsube T, Tabata H, Yamazaki Y, Shiwaku K, Yamane Y. 4P-1197 Low-density lipoprottein antioxidant activity from edible plant products. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)91453-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: 10/25/2022]
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Matsushita S, Tanaka Y, Tabata H, Matsuoka T, Ohyama H, Nakashima T. Combinatorial peptide library for the analysis of antigen recognition by T cells. Comb Chem High Throughput Screen 2002; 5:551-63. [PMID: 12470268 DOI: 10.2174/1386207023330011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Peptides that consist of 19 residues with random sequences (X19) were considered to deliver antigenic stimuli to CD4T cells. When IL-4, IL-7, IL-9, IL-15 and agonistic Ab to CD29 were co-cultured with single peripheral CD4T cells in the presence of X19 and feeder cells, T cells exhibited clonal expansion. These T cell clones showed heterogeneous proliferation patterns against KGXXXXXXXXXGK-based and KGXXXXXXXXXGKGKK-based combinatorial peptide libraries. Pattern-match search on one of the T cell clones resulted in peptide ligand candidates, one of which induced proliferation, as did protein molecules carrying the corresponding sequence. Combinatorial chemistry was useful in determining not only peptide ligands but also peptide superagonists. For this purpose, use of reverse-phase hydrophobic interaction chromatography and mass spectrometry analysis was efficient. Detailed methods are described in the paper.
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Affiliation(s)
- S Matsushita
- Department of Allergy and Immunology, Saitama Medical School, Moroyama, 350-0495, Japan.
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Tabata H, Yamamoto K, Kawato M. Computational study on monkey VOR adaptation and smooth pursuit based on the parallel control-pathway theory. J Neurophysiol 2002; 87:2176-89. [PMID: 11929935 DOI: 10.1152/jn.00168.2001] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Much controversy remains about the site of learning and memory for vestibuloocular reflex (VOR) adaptation in spite of numerous previous studies. One possible explanation for VOR adaptation is the flocculus hypothesis, which assumes that this adaptation is caused by synaptic plasticity in the cerebellar cortex. Another hypothesis is the model proposed by Lisberger that assumes that the learning that occurs in both the cerebellar cortex and the vestibular nucleus is necessary for VOR adaptation. Lisberger's model is characterized by a strong positive feedback loop carrying eye velocity information from the vestibular nucleus to the cerebellar cortex. This structure contributes to the maintenance of a smooth pursuit driving command with zero retinal slip during the steady-state phase of smooth pursuit with gain 1 or during the target blink condition. Here, we propose an alternative hypothesis that suggests that the pursuit driving command is maintained in the medial superior temporal (MST) area based on MST firing data during target blink and during ocular following blank, and as a consequence, we assume a much smaller gain for the positive feedback from the vestibular nucleus to the cerebellar cortex. This hypothesis is equivalent to assuming that there are two parallel neural pathways for controlling VOR and smooth pursuit: a main pathway of the semicircular canals to the vestibular nucleus for VOR, and a main pathway of the MST-dorsolateral pontine nuclei (DLPN)-flocculus/ventral paraflocculus to the vestibular nucleus for smooth pursuit. First, we theoretically demonstrate that this parallel control-pathway theory can reproduce the various firing patterns of horizontal gaze velocity Purkinje cells in the flocculus/ventral paraflocculus dependent on VOR in the dark, smooth pursuit, and VOR cancellation as reported in Miles et al. at least equally as well as the gaze velocity theory, which is the basic framework of Lisberger's model. Second, computer simulations based on our hypothesis can stably reproduce neural firing data as well as behavioral data obtained in smooth pursuit, VOR cancellation, and VOR adaptation, even if only plasticity in the cerebellar cortex is assumed. Furthermore, our computer simulation model can reproduce VOR adaptation automatically based on a heterosynaptic interaction model between parallel fiber inputs and climbing fiber inputs. Our results indicate that different assumptions about the site of pursuit driving command maintenance computationally lead to different conclusions about where the learning for VOR adaptation occurs. Finally, we propose behavioral and physiological experiments capable of discriminating between these two possibilities for the site of pursuit driving command maintenance and hence for the sites of learning and memory for VOR adaptation.
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Affiliation(s)
- Hiromitsu Tabata
- Kawato Dynamic Brain Project, ERATO, Japan Science and Technology Corporation, Kyoto 619-0288, Japan.
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Ishikawa N, Fuchigami T, Matsumoto T, Kobayashi H, Sakai Y, Tabata H, Takubo N, Yamamoto S, Nakanishi M, Tomioka K, Fujishima M. Helicobacter pylori infection in rheumatoid arthritis: effect of drugs on prevalence and correlation with gastroduodenal lesions. Rheumatology (Oxford) 2002; 41:72-7. [PMID: 11792883 DOI: 10.1093/rheumatology/41.1.72] [Citation(s) in RCA: 25] [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: 12/16/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the impact of Helicobacter pylori infection on clinical features in patients with rheumatoid arthritis (RA) under medication with non-steroidal anti-inflammatory drugs. METHODS One hundred and eighty-four patients with RA were tested for the presence of H. pylori infection. Clinical features and gastroduodenal lesions were compared between H. pylori-positive and -negative patients. RESULTS One hundred and thirteen patients were positive and 71 patients were negative for H. pylori. The age, severity of RA, prevalence of gastrointestinal symptoms and gastroduodenal lesions and the class of gastroprotective drugs were not different between the two groups. Reflux oesophagitis was less frequent and sulphasalazine was less frequently administered in the H. pylori-positive group. CONCLUSIONS The severity of RA, prevalence of gastroduodenal lesions other than reflux oesophagitis and the application of gastroprotective drugs do not seem to depend upon H. pylori infection in RA patients. Sulphasalazine may be protective against H. pylori infection.
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Affiliation(s)
- N Ishikawa
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582, Japan
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40
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Onaka H, Tabata H, Igarashi Y, Sato Y, Furumai T. Goadsporin, a chemical substance which promotes secondary metabolism and morphogenesis in streptomycetes. I. Purification and characterization. J Antibiot (Tokyo) 2001; 54:1036-44. [PMID: 11858658 DOI: 10.7164/antibiotics.54.1036] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [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: 11/21/2022]
Abstract
Streptomycetes, which belong to the Gram-positive bacteria, produce secondary metabolites and sporulate. The timing of starting the secondary metabolite production and the sporulation depends on environmental conditions such as nitrogen and carbon sources. In order to obtain a tool for understanding the regulation mechanism, we carried out screening for chemical substances that induce secondary metabolism and sporulation in streptomycetes and found an active substance from the culture broth of Streptomyces sp. TP-A0584. This substance designated goadsporin promoted the formation of red pigment and sporulation at a concentration of 1 microM in Streptomyces lividans TK23 which does not produce the pigment under normal growth conditions. Goadsporin is an oligopeptide consisting of 19 amino acids with the molecular formula C72H97N19020S2. Sporulation and/or secondary metabolite production was induced in 36 streptomycetes strains among 42 strains tested. These results suggest that goadsporin acts on a common regulation pathway for sporulation and secondary metabolism in streptomycetes and can be a powerful tool to analyze the regulation mechanism.
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Affiliation(s)
- H Onaka
- Biotechnology Research Center, Toyama Prefectural University, Kosugi, Japan.
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Igarashi Y, Kan Y, Fujii K, Fujita T, Harada K, Naoki H, Tabata H, Onaka H, Furumai T. Goadsporin, a chemical substance which promotes secondary metabolism and Morphogenesis in streptomycetes. II. Structure determination. J Antibiot (Tokyo) 2001; 54:1045-53. [PMID: 11858659 DOI: 10.7164/antibiotics.54.1045] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of goadsporin was determined by using spectroscopic techniques. NMR analysis revealed that goadsporin consists of 19 amino acids, two of which are dehydroalanines (Deala), and six of which are cyclized to oxazoles (Oxz) and thiazoles (Thz) by dehydrative cyclization and dehydrogenation from serine, threonine and cysteine. NMR analysis established seven partial structures, and their sequence was determined by CID-MS/MS. Negative mode FAB-MS/MS gave product ions arising from charge-remote fragmentation that allowed determination of the sequence of the amino acid components as AcNH-Ala-MeOxz-Val-Deala-MeOxz-Ile-Leu-Thz-Ser-Gly-Gly-MeOxz-Leu-Deala-Oxz-Ala-Gly-Thz-Val-OH. The chiral amino acids were determined by the advanced Marfey's method to have L-configurations.
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Affiliation(s)
- Y Igarashi
- Biotechnology Research Center, Toyama Prefectural University, Kosugi, Japan.
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42
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Tabata H, Fuchigami T, Kobayashi H, Sakai Y, Nakanishi M, Tomioka K, Nakamura S, Matsumoto T, Fujishima M. Difference in degree of mucosal atrophy between elevated and depressed types of gastric epithelial tumors. Scand J Gastroenterol 2001; 36:1134-40. [PMID: 11686211 DOI: 10.1080/00365520152584743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The significance of atrophy in the background mucosa and Helicobacter pylori infection in the morphogenesis of gastric epithelial tumors has not yet been investigated. METHODS The degree of mucosal atrophy, as determined by a histological analysis and the serum pepsinogen (PG) levels, and H. pylori status were investigated in patients with elevated adenoma (EA group; n = 40), elevated early cancer of intestinal type (ECI group; n = 30), depressed early cancer of intestinal type (DCI group; n = 37) and depressed early cancer of diffuse type (DCD group; n = 33), and the findings were then compared to those in 91 controls. RESULTS At all sites of the stomach, the histologic score of atrophy was higher in the EA group and in the ECI group than in the controls. In the DCI group, the histologic score of atrophy in the antrum was higher than in the controls, but no such difference in the score was found in the DCD group. The PG I/II ratios in the EA, ECI and DCI groups were significantly lower than in the controls, and the value was also different between the ECI and DCI groups. While H. pylori prevalence was higher in all groups than in the controls, a logistic regression analysis which included the grade of atrophy as a determinant revealed the infection to be an independent associated factor for the DCD group. CONCLUSIONS The difference in the background mucosal atrophy seems to contribute to different macroscopic types in gastric epithelial tumors. This seems to be the case especially for cancer of intestinal type.
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Affiliation(s)
- H Tabata
- Division of Gastroenterology, Matsuyama Red Cross Hospital, Ehime, Japan.
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Ohtsuka S, Yanadori A, Tabata H, Yamakage A, Yamazaki S. Sarcoidosis with giant parotomegaly. Cutis 2001; 68:199-200. [PMID: 11579785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
We report the case of a 63-year-old man with bilateral parotid gland sarcoidosis. Giant, elastic, hard, subcutaneous tumors had been present on the right parotic and submaxillary regions for 11 years and on the left for 1 year. The patient had had diabetes mellitus for 8 years. Noncaseating epithelioid cell granulomata were revealed histopathologically in the periductal area of the parotid gland. Bilateral hilar lymphadenopathy was noted on chest x-ray studies. Serum levels of lysozyme were increased. Levels of serum angiotensin-converting enzyme were within normal limits. Tuberculin skin reaction was positive. The tumors gradually improved after treatment with oral minocycline. Giant parotomegaly, as it occurred in this case, is very rare.
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Affiliation(s)
- S Ohtsuka
- Department of Dermatology, Dokkyo University School of Medicine, Mibu, Tochigi, 321-02, Japan
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44
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Matsushita S, Tabata H, Matsuoka T. [Immune regulation mediated by signaling through class II HLA molecules]. Arerugi 2001; 50:601-11. [PMID: 11554064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- S Matsushita
- Division of Immunogenetics, Kumamoto University Graduate School of Medical Sciences
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Tabata H, Nakajima K. Efficient in utero gene transfer system to the developing mouse brain using electroporation: visualization of neuronal migration in the developing cortex. Neuroscience 2001; 103:865-72. [PMID: 11301197 DOI: 10.1016/s0306-4522(01)00016-1] [Citation(s) in RCA: 530] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We report a novel gene transfer system using electroporation. We used this technique to introduce a marker gene plasmid containing enhanced green fluorescent protein into mouse brains at embryonic day 12-17 without removing the embryos from the uterus. The embryos were allowed to continue to develop in utero, and more than 80% were born normally expressing the exogenous gene. Enhanced green fluorescent protein driven by the cytomegalovirus promoter was strongly expressed in the ventricular zone, radial fibers and migrating neuroblasts, but not in mature neurons, suggesting that the cytomegalovirus promoter is silenced after the cells differentiate into mature neurons. Since there is still no convenient way of visualizing the migrating neuroblasts, especially of distinguishing them from the surrounding mature neurons in the cortical plate, this system should provide a good tool for analysing neuronal migration. In the postnatal lateral cortex, neuroblasts migrated almost "tangentially" along the obliquely running "radial" fibers beneath the cortical plate, and after entering the cortical plate, turned towards the marginal zone and migrated radially. Neurons with primitive dendrites were observed only along the border between the marginal zone and the cortical plate, and never at other sites, such as in the middle of the cortical plate. These results imply that the neuroblasts do terminate migration and start differentiation to mature neurons when they encounter the marginal zone, as has long been suggested. By contrast, when elongation factor 1alpha promoter was used, prominent fluorescence allowed visualization of the entire mature neurons as well. The labeled neurons were observed to send axons to the contralateral cortex where they arborized extensively.Thus, this system is much easier and more efficient than virus-mediated gene transfer, and is useful for gain-of-function analysis of neural cell fate determination, migration, positioning and axon path-finding in mouse embryos.
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Affiliation(s)
- H Tabata
- Department of Molecular Neurobiology, Institute of DNA Medicine, Jikei University School of Medicine, Minato-ku, 105-8461, Tokyo, Japan
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46
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Shimamura N, Sekiya T, Ohkuma H, Tabata H, Yagihashi A, Suzuki S. [A case report of mirror writing with low perfusion of bilateral anterior cerebral arteries]. No To Shinkei 2001; 53:567-70. [PMID: 11436342] [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: 02/20/2023]
Abstract
A 20-year-old female experienced temporary unintentional mirror writing associated with low perfusion of the bilateral anterior cerebral arteries. When she was 17 years old, she had developed multiple idiopathic intracerebral hemorrhages and right hemiparesis. At the age of 20, she had a generalized convulsion for which she was transferred to our department. Computed tomography (CT) and magnetic resonance images of the brain were obtained, but no fresh abnormal lesion could be detected. The following day, after she had recovered from postictal symptoms, she wrote mirror image words, and her mirror writing then gradually improved within one week. Single photon emission CT showed low perfusion of both anterior cerebral arteries. We concluded that bilateral vascular insufficiency to the supplementary motor areas and corpus callosum caused mirror writing in this case.
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Affiliation(s)
- N Shimamura
- Department of Neurosurgery, Hirosaki University School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Japan
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47
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Nishimura Y, Ito H, Fujii S, Tabata H, Tokano Y, Chen YZ, Matsuda I, Mitsuya H, Kira J, Hashimoto H, Senju S, Matsushita S. Molecular and cellular analyses of HLA class II-associated susceptibility to autoimmune diseases in the Japanese population. Mod Rheumatol 2001; 11:103-12. [PMID: 24383685 DOI: 10.3109/s101650170020] [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: 11/13/2022]
Abstract
Abstract It is well known that individuals who are positive for particular HLA class II alleles show a high risk of developing autoimmune diseases. HLA class II molecules expressed on antigen-presenting cells present antigenic peptides to CD4(+) T cells. Their extensive polymorphism affects the structures of peptides bound to HLA class II molecules to create individual differences in immune responses to antigenic peptides. In order to gain a better understanding of mechanisms of the association between HLA class II alleles and susceptibility to autoimmune diseases, it is important to identify self-peptides presented by disease-susceptible HLA class II molecules and triggering disease-causative T cells. Many of the autoimmune diseases are observed in all ethnic groups, whereas the incidence of diseases, clinical manifestations and disease-susceptible HLA class II alleles are different among various ethnic groups for some autoimmune diseases. These phenomena suggest that differences in autoimmune self-peptide(s) in the context of disease-susceptible HLA class II molecules may cause these differences. Therefore, comparisons among disease-susceptible HLA class II alleles, autoantigenic peptides, and clinical manifestations of autoimmune diseases in different ethnic groups would be helpful in elucidating the pathogenesis of the diseases. In this review, we describe our recent findings on (1) the uniqueness of both clinical manifestations and the HLA-linked genetic background of Asian-type (opticospinal form) multiple sclerosis, (2) the characteristics of glutamic acid decarboxylase 65 (GAD65) or β2-glycoprotein I (β2-GPI) autoreactive T cells in Japanese patients with insulin-dependent diabetes mellitus (IDDM) or anti-β2-GPI antibody-associated autoimmunity, respectively, and (3) the generation of an efficient delivery system of peptides to the HLA class II-restricted antigen presentation path-way by utilizing a class II-associated invariant chain peptide (CLIP)-substituted invariant chain, which may be applicable to an evaluation of the "molecular mimicry hypothesis" for the activation of autoreactive T cells.
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Affiliation(s)
- Y Nishimura
- Division of Immunogenetics, Department of Neuroscience and Immunology, Kumamoto University Graduate School of Medical Sciences , 2-2-1 Honjo, Kumamoto 860-0811 , Japan
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Matsuoka T, Tabata H, Matsushita S. Monocytes are differentially activated through HLA-DR, -DQ, and -DP molecules via mitogen-activated protein kinases. J Immunol 2001; 166:2202-8. [PMID: 11160273 DOI: 10.4049/jimmunol.166.4.2202] [Citation(s) in RCA: 51] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
When HLA-DR, -DQ, and -DP were cross-linked by solid-phase mAbs, monocytes produced monokines and only anti-DR markedly activated mitogen-activated protein (MAP) kinase extracellular signal-related kinase, whereas anti-DR, anti-DQ, and anti-DP all activated MAP kinase p38. Activation of extracellular signal-related kinase was not inhibited by neutralizing Ab to TNF-alpha. Anti-DR and DR-restricted T cells stimulated monocytes to produce relatively higher levels of proinflammatory monokines, such as IL-1beta, whereas anti-DQ/DP and DQ-/DP-restricted T cells stimulated higher levels of anti-inflammatory monokine IL-10. IL-10 production was abrogated by the p38 inhibitor SB203580, but rather enhanced by the MAP/extracellular signal-related kinase kinase-I-specific inhibitor PD98059, whereas IL-1beta was only partially abrogated by SB203580 and PD98059. Furthermore, DR-restricted T cells established from PBMC, which are reactive with mite Ags, purified protein derivative, and random 19-mer peptides, exhibited a higher IFN-gamma:IL-4 ratio than did DQ- or DP-restricted T cells. These results indicate that HLA-DR, -DQ, and -DP molecules transmit distinct signals to monocytes via MAP kinases and lead to distinct monokine activation patterns, which may affect T cell responses in vivo. Thus, the need for generation of a multigene family of class II MHC seems apparent.
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Affiliation(s)
- T Matsuoka
- Department of Neuroscience and Immunology, Division of Immunogenetics, Kumamoto University Graduate School of Medical Sciences, Honjo, Kumamoto, Japan
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Abstract
BACKGROUND The precise mechanism of diffuse pigmentation in systemic sclerosis (SSc) is still unknown. We suspected the participation of endothelin-1 (ET-1), which is produced by keratinocytes, in the hyperpigmentation in SSc. The aims of this study are to demonstrate the hyperproductivity of ET-1 from epidermal cells in SSc by in situ hybridization histochemistry, and to show a correlation between the hyperproductivity of ET-1 in keratinocytes and skin hyperpigmentation. METHODS In situ hybridization histochemistry was performed on nine SSc specimens (five cases of diffuse scleroderma (dSSc), four cases of acrosclerosis (lSSc)), and compared with four normal control specimens. We counted the grains on 10 x 10 microm(2) of epidermis and microvessels in each histology and examined the degree of skin pigmentation using the skin reflectance factor (Y). RESULTS In the specimens of the SSc patients, the number of grains on the epidermis was remarkably higher than those of the control specimens (P < 0.01). We found a close correlation between the number of grains and the skin reflectance factor in dSSc patients (P = 0.02). Correlations were not identified between serum ET-1 and skin pigmentation and between serum ET-1 and the frequency of grains on the epidermis. As for grains on microvessels, lSSc patients showed a greater frequency than dSSc patients. CONCLUSIONS The findings of this study suggest that an increase in the ET-1 productivity of keratinocytes is experienced in SSc patients, especially in dSSc patients. The results suggest a strong correlation between the ET-1 productivity of keratinocytes and skin pigmentation in severe cases of SSc. We conclude from these results that keratinocyte-derived ET-1 plays an important role in the pathogenesis of the hyperpigmentation of the skin in SSc patients.
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Affiliation(s)
- H Tabata
- Department of Dermatology and Physiology, Dokkyo University School of Medicine, Tochigi, Japan
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Tabata H, Matsuoka T, Endo F, Nishimura Y, Matsushita S. Ligation of HLA-DR molecules on B cells induces enhanced expression of IgM heavy chain genes in association with Syk activation. J Biol Chem 2000; 275:34998-5005. [PMID: 10948188 DOI: 10.1074/jbc.m002089200] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Signals transmitted by class II major histocompatibility complex are important regarding cell function related to antigen presentation. We examined effects of DR-mediated signaling on Ig production from B cells. Cross-linking HLA-DR molecules on B cells by solid-phase anti-HLA-DR monoclonal antibodies, led to an increased production of IgM, without proliferation or apoptosis. This event was accompanied by an enhanced expression of both membrane- and secretory-type IgM heavy chain mRNA. When peptide-pulsed B cells were co-incubated with an HLA-DR-restricted T cell clone treated by the protein synthesis inhibitor emetine, peptide-induced de novo expression of lymphokines and cell-surface molecules on T cells can be neglected. CD40-CD154 interaction was not involved in IgM enhancement, in such a system. The protein-tyrosine kinase inhibitors and the Syk inhibitor piceatannol, but not the Src inhibitor PP2 had a marked inhibitory effect on IgM secretion. Furthermore, ligation of HLA-DR on B cells using the F(ab')2 fragment of anti-DR monoclonal antibody, enhanced Syk activity. Our data suggest that HLA-DR on B cells not only present antigenic peptides to T cells, but also up-regulate IgM production, in association with Syk activation and without the involvement of Src kinases, hence the possible physiological relevance of Src-independent Syk activation.
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Affiliation(s)
- H Tabata
- Division of Immunogenetics, Department of Neuroscience and Immunology, Kumamoto University Graduate School of Medical Sciences and the Department of Pediatrics, Kumamoto University School of Medicine, Kumamoto 860-0811, Japan
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