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Hanada S, Muraki M, Kawabata Y, Yoshikawa K, Yamagata T, Nagasaki T, Ohara Y, Oiso N, Matsumoto H, Tohda Y. Significance of Self-Injectable Biologics in Japanese Patients with Severe Allergic Diseases: Focusing on Pen-Type Devices and Copayment. Patient Prefer Adherence 2023; 17:2847-2853. [PMID: 37953978 PMCID: PMC10638892 DOI: 10.2147/ppa.s430038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 10/24/2023] [Indexed: 11/14/2023] Open
Abstract
Patients and Methods A questionnaire survey was administered to 18, 14, and 3 patients introduced to home self-injection of dupilumab or mepolizumab using a pen-type device for atopic dermatitis, asthma alone, and asthma plus chronic rhinosinusitis with nasal polyps, respectively. Results All but one participant wished to continue self-injection. Most participants affirmed the reduction in copayment (88.6%) and saving time and labor for hospital visits (88.6%). Six patients who received dupilumab complained of side effects, but all, except for one, continued the treatment. Of the 13 patients who had previously used a syringe-type device, 10 preferred the pen type because of its ease of use, while 3 (23%) preferred the syringe type because of the self-adjustable injection speed for pain control. Conclusion Administration of biologics using pen-type devices is easier, and the introduction of home self-injection leads to a reduction in outpatient visits and copayment.
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Affiliation(s)
- Soichiro Hanada
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Masato Muraki
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Yoshiyuki Kawabata
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Kazuya Yoshikawa
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Toshiyuki Yamagata
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Tadao Nagasaki
- Department of Respiratory Medicine and Allergology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Yushiro Ohara
- Department of Dermatology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Naoki Oiso
- Department of Dermatology, Kindai University Nara Hospital, Ikoma, Nara, Japan
| | - Hisako Matsumoto
- Department of Respiratory Medicine and Allergology, Kindai University Hospital, Osakasayama, Osaka, Japan
| | - Yuji Tohda
- Kindai University Hospital, Osakasayama, Osaka, Japan
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Wallner A, Froehlich MB, Hotchkis MAC, Kinoshita N, Paul M, Martschini M, Pavetich S, Tims SG, Kivel N, Schumann D, Honda M, Matsuzaki H, Yamagata T. 60Fe and 244Pu deposited on Earth constrain the r-process yields of recent nearby supernovae. Science 2021; 372:742-745. [PMID: 33986180 DOI: 10.1126/science.aax3972] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 04/12/2021] [Indexed: 11/02/2022]
Abstract
Half of the chemical elements heavier than iron are produced by the rapid neutron capture process (r-process). The sites and yields of this process are disputed, with candidates including some types of supernovae (SNe) and mergers of neutron stars. We search for two isotopic signatures in a sample of Pacific Ocean crust-iron-60 (60Fe) (half-life, 2.6 million years), which is predominantly produced in massive stars and ejected in supernova explosions, and plutonium-244 (244Pu) (half-life, 80.6 million years), which is produced solely in r-process events. We detect two distinct influxes of 60Fe to Earth in the last 10 million years and accompanying lower quantities of 244Pu. The 244Pu/60Fe influx ratios are similar for both events. The 244Pu influx is lower than expected if SNe dominate r-process nucleosynthesis, which implies some contribution from other sources.
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Affiliation(s)
- A Wallner
- Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia. .,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany
| | - M B Froehlich
- Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - M A C Hotchkis
- Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia
| | - N Kinoshita
- Institute of Technology, Shimizu Corporation, Tokyo 135-8530, Japan
| | - M Paul
- Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - M Martschini
- Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - S Pavetich
- Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - S G Tims
- Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - N Kivel
- Laboratory of Radiochemistry, Department for Nuclear Energy and Safety, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - D Schumann
- Laboratory of Radiochemistry, Department for Nuclear Energy and Safety, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - M Honda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
| | - H Matsuzaki
- Micro Analysis Laboratory, Tandem Accelerator, The University Museum, The University of Tokyo, Tokyo 113-0032, Japan
| | - T Yamagata
- Micro Analysis Laboratory, Tandem Accelerator, The University Museum, The University of Tokyo, Tokyo 113-0032, Japan
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Batjargal K, Tajima T, Jimbo EF, Yamagata T. Effect of 4-phenylbutyrate and valproate on dominant mutations of WFS1 gene in Wolfram syndrome. J Endocrinol Invest 2020; 43:1317-1325. [PMID: 32219690 DOI: 10.1007/s40618-020-01228-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/17/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE Wolfram syndrome (WS) is a rare disorder caused by mutations in WFS1 that is characterized by diabetes mellitus, optic atrophy, sensorineural deafness, diabetes insipidus, and neurodegeneration. This disease is usually inherited as an autosomal recessive trait, but an autosomal dominant form has been reported. WFS1 encodes a transmembrane protein, which is a maintenance component of endoplasmic homeostasis. These dominant mutations were thought to increase endoplasmic reticulum (ER) stress. Recent studies suggest that 4-phenylbutyrate (PBA) and valproate (VPA) reduce ER stress. The objective of this study was to analyze the effect of PBA and VPA on dominant WFS1 mutants in vitro. METHODS We determined whether dominant WFS1 mutants (p.His313Tyr, p.Trp314Arg, p.Asp325_Ile328del, p.Glu809Lys, and p.Glu864Lys) have the dominant negative effect using a luciferase assay of ER stress response element marker as ER stress. Moreover, the rescue of cell apoptosis induced by dominant WFS1 mutants following treatment with PBA or VPA was determined by quantitative real-time PCR of C/EBP homologous protein (CHOP) mRNA expression. RESULTS These mutants showed the dominant negative effect on the wild-type WFS1. In addition, the levels of ER stress and CHOP mRNA were significantly elevated by all dominant WFS1 mutants. After treatment with PBA or VPA, ER stress and cell apoptosis were reduced in each mutant. CONCLUSIONS PBA and VPA could reduce the ER stress and cell apoptosis caused by dominant WFS1 mutants.
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Affiliation(s)
- K Batjargal
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan.
- Department of Pediatrics, School of Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia.
| | - T Tajima
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
| | - E F Jimbo
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
| | - T Yamagata
- Department of Pediatrics, Graduate School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan
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4
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Ikarashi Y, Yamagata T, Yamagishi F, Fujisawa N. Unsteady turbulence structure in and downstream of a short elbow at post-critical Reynolds numbers. Nuclear Engineering and Design 2020. [DOI: 10.1016/j.nucengdes.2020.110649] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Krone L, Yamagata T, Blanco-Duque C, Guillaumin M, Hoerder-Suabedissen A, Molnár Z, Vyazovskiy V. Selective silencing of layer 5 pyramidal neurons increases wake time and affects local and global sleep homeostasis. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Matsubara D, Takahashi H, Kataoka K, Minami T, Furukawa R, Matsubara S, Yamagata T. Tracheal stenosis due to vascular rings: its possible prenatal diagnosis based on four cases of vascular rings with or without eventual tracheal stenosis. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4787.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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7
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Inomata Y, Aoyama M, Tsubono T, Tsumune D, Kumamoto Y, Nagai H, Yamagata T, Kajino M, Tanaka YT, Sekiyama TT, Oka E, Yamada M. Estimate of Fukushima-derived radiocaesium in the North Pacific Ocean in summer 2012. J Radioanal Nucl Chem 2018; 318:1587-1596. [PMID: 30546185 PMCID: PMC6267120 DOI: 10.1007/s10967-018-6249-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Indexed: 11/25/2022]
Abstract
Distributions of radiocaesium (134Cs and 137Cs) derived from the Tokyo Electric Power Company (TEPCO) Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident in the North Pacific Ocean in the summer of 2012 were investigated. We have estimated the radiocaesium inventory in the surface layer using the optimal interpolation analysis and the subducted amount into the central mode water (CMW) by using vertical profiles of FNPP1-134Cs and mass balance analysis as the first approach. The inventory of the 134Cs in the surface layer in the North Pacific Ocean in August-December 2012 was estimated at 5.1 ± 0.9 PBq on 1 October 2012, which corresponds to 8.6 ± 1.5 PBq when it was decay corrected to the date of the FNPP1 accident, 11 March 2011. It was revealed that 56 ± 10% of the released 134Cs into the North Pacific Ocean, which was estimated at 15.3 ± 2.6 PBq, transported eastward in the surface layer in 2012. The amount of 134Cs subducted in the CMW was estimated to be 2.5 ± 0.9 PBq based on the mass balance among the three domains of the surface layer, subtropical mode water, and CMW.
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Affiliation(s)
- Y. Inomata
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, 920-1192 Japan
| | - M. Aoyama
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima, 960-1192 Japan
| | - T. Tsubono
- Environmental Science Research Laboratory, Central Research Institute of Electronic Power Industry, 1646, Abiko, 270-1194 Japan
| | - D. Tsumune
- Environmental Science Research Laboratory, Central Research Institute of Electronic Power Industry, 1646, Abiko, 270-1194 Japan
| | - Y. Kumamoto
- Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, 237-0061 Japan
| | - H. Nagai
- Nihon University, 40-25-3 Sakurajosui, Setagaya, Tokyo, 156-8550 Japan
| | - T. Yamagata
- Nihon University, 40-25-3 Sakurajosui, Setagaya, Tokyo, 156-8550 Japan
| | - M. Kajino
- Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 305-0052 Japan
| | - Y. T. Tanaka
- Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 305-0052 Japan
| | - T. T. Sekiyama
- Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 305-0052 Japan
| | - E. Oka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, 277-8564 Japan
| | - M. Yamada
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, 036-8564 Japan
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9
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Yamagata T, McKillop L, Cui N, Purple R, Sato A, Vyazovskiy V. Neuronal signatures of sleep homeostasis in the dorsal striatum in mice. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.1037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Tsuchida N, Nakashima M, Miyauchi A, Yoshitomi S, Kimizu T, Ganesan V, Teik KW, Ch'ng GS, Kato M, Mizuguchi T, Takata A, Miyatake S, Miyake N, Osaka H, Yamagata T, Nakajima H, Saitsu H, Matsumoto N. Novel biallelic SZT2 mutations in 3 cases of early-onset epileptic encephalopathy. Clin Genet 2017; 93:266-274. [PMID: 28556953 DOI: 10.1111/cge.13061] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 05/10/2017] [Accepted: 05/24/2017] [Indexed: 01/08/2023]
Abstract
The seizure threshold 2 (SZT2) gene encodes a large, highly conserved protein that is associated with epileptogenesis. In mice, Szt2 is abundantly expressed in the central nervous system. Recently, biallelic SZT2 mutations were found in 7 patients (from 5 families) presenting with epileptic encephalopathy with dysmorphic features and/or non-syndromic intellectual disabilities. In this study, we identified by whole-exome sequencing compound heterozygous SZT2 mutations in 3 patients with early-onset epileptic encephalopathies. Six novel SZT2 mutations were found, including 3 truncating, 1 splice site and 2 missense mutations. The splice-site mutation resulted in skipping of exon 20 and was associated with a premature stop codon. All individuals presented with seizures, severe developmental delay and intellectual disabilities with high variability. Brain MRIs revealed a characteristic thick and short corpus callosum or a persistent cavum septum pellucidum in each of the 2 cases. Interestingly, in the third case, born to consanguineous parents, had unexpected compound heterozygous missense mutations. She showed microcephaly despite the other case and previous ones presenting with macrocephaly, suggesting that SZT2 mutations might affect head size.
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Affiliation(s)
- N Tsuchida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - A Miyauchi
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - S Yoshitomi
- Department of Pediatrics, Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - T Kimizu
- Department of Pediatrics, Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - V Ganesan
- Department of Pediatrics, Penang Hospital, Pulau Pinang, Malaysia
| | - K W Teik
- Genetic Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - G-S Ch'ng
- Genetic Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - M Kato
- Department of Pediatrics, Yamagata University Faculty of Medicine, Yamagata, Japan.,Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - T Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - A Takata
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - S Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Clinical Genetics Department, Yokohama City University Hospital, Yokohama, Japan
| | - N Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Osaka
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - T Yamagata
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - H Nakajima
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - N Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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11
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Kanao K, Shiraishi M, Higashimoto Y, Maeda K, Sugiya R, Okajima S, Chiba Y, Yamagata T, Terada K, Fukuda K, Tohda Y. Factors associated with the effect of pulmonary rehabilitation on physical activity in patients with chronic obstructive pulmonary disease. Geriatr Gerontol Int 2015; 17:17-23. [PMID: 26634413 DOI: 10.1111/ggi.12656] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2015] [Indexed: 11/28/2022]
Abstract
AIM Although the effects of pulmonary rehabilitation (PR) have been well defined for chronic obstructive pulmonary disease (COPD), it remains controversial whether PR improves physical activity (PA). The purpose of the present study was to identify factors associated with the effect of PR on PA. METHODS This was a prospective study of 29 patients with COPD. They underwent pulmonary rehabilitation twice weekly for 12 weeks, and were assessed using the hospital anxiety and depression score, 6-min walk distance (6MWD), and the St. George Respiratory Questionnaire (SGRQ) before and after they underwent PR. The PA of patients was measured by a three-axis accelerometer. Physical activity level (PAL) was calculated by dividing each patient's total energy expenditure by basal metabolic rate. Correlations between changes in PAL after PR and 6MWD, St. George Respiratory Questionnaire, and hospital anxiety and depression score scores, and clinical parameters, including forced expiratory volume in 1 s were determined. RESULTS 6MWD was significantly increased, but PAL was unchanged after PR. PAL was positively correlated with 6MWD, but not with percent predicted forced expiratory volume in 1 s nor St. George Respiratory Questionnaire scores before PR. The increase in PAL was negatively correlated with changes in hospital anxiety and depression score anxiety and depression scores, but was not correlated with the change in 6MWD. CONCLUSIONS A PR program for COPD patients improved results of the 6MWD, but not PAL. Increased PAL was associated with improvements in anxiety and depression, but not with increased exercise capacity. Treating the depression and anxiety of patients with COPD might not only reduce emotional distress, but also improve their PAL. Geriatr Gerontol Int 2017; 17: 17-23.
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Affiliation(s)
- Kenro Kanao
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Japan.,Department of Physical Therapy, Morinomiya University of Medical Sciences, Osaka, Osaka, Japan
| | - Masashi Shiraishi
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Yuji Higashimoto
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Kazushige Maeda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Ryuji Sugiya
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Satoshi Okajima
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Yasutaka Chiba
- Division of Biostatistics, Clinical Research Center, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Toshiyuki Yamagata
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Katsuhiko Terada
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Kanji Fukuda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Japan
| | - Yuji Tohda
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Japan
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12
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Higashimoto Y, Honda N, Yamagata T, Sano A, Nishiyama O, Sano H, Iwanaga T, Kume H, Chiba Y, Fukuda K, Tohda Y. Exertional dyspnoea and cortical oxygenation in patients with COPD. Eur Respir J 2015; 46:1615-24. [PMID: 26493791 DOI: 10.1183/13993003.00541-2015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 07/08/2015] [Indexed: 11/05/2022]
Abstract
This study was designed to investigate the association of perceived dyspnoea intensity with cortical oxygenation and cortical activation during exercise in patients with chronic obstructive pulmonary disease (COPD) and exertional hypoxaemia.Low-intensity exercise was performed at a constant work rate by patients with COPD and exertional hypoxaemia (n=11) or no hypoxaemia (n=16), and in control participants (n=11). Cortical oxyhaemoglobin (oxy-Hb) and deoxyhaemoglobin (deoxy-Hb) concentrations were measured by multichannel near-infrared spectroscopy. Increased deoxy-Hb is assumed to reflect impaired oxygenation, whereas decreased deoxy-Hb signifies cortical activation.Exercise decreased cortical deoxy-Hb in control and nonhypoxaemic patients. Deoxy-Hb was increased in hypoxaemic patients and oxygen supplementation improved cortical oxygenation. Decreased deoxy-Hb in the pre-motor cortex (PMA) was significantly correlated with exertional dyspnoea in control participants and patients with COPD without hypoxaemia. In contrast, increased cortical deoxy-Hb concentration was correlated with dyspnoea in patients with COPD and hypoxaemia. With the administration of oxygen supplementation, exertional dyspnoea was correlated with decreased deoxy-Hb in the PMA of COPD patients with hypoxaemia.During exercise, cortical oxygenation was impaired in patients with COPD and hypoxaemia compared with control and nonhypoxaemic patients; this difference was ameliorated with oxygen supplementation. Exertional dyspnoea was related to activation of the pre-motor cortex in COPD patients.
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Affiliation(s)
- Yuji Higashimoto
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Noritsugu Honda
- Dept of Rehabilitation Medicine, Kinki University, Osaka, Japan
| | - Toshiyuki Yamagata
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Akiko Sano
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Osamu Nishiyama
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Hiroyuki Sano
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Takashi Iwanaga
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Hiroaki Kume
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
| | - Yasutaka Chiba
- Division of Biostatistics, Clinical Research Center, Kinki University, Osaka, Japan
| | - Kanji Fukuda
- Dept of Rehabilitation Medicine, Kinki University, Osaka, Japan
| | - Yuji Tohda
- Dept of Respiratory Medicine and Allergology, Kinki University, Osaka, Japan
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13
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Nishiyama O, Yamazaki R, Sano A, Yamagata T, Sano H, Iwanaga T, Higashimoto Y, Kume H, Tohda Y. Prognostic value of forced expiratory volume in 1 second/forced vital capacity in idiopathic pulmonary fibrosis. Chron Respir Dis 2015; 13:40-7. [PMID: 26374300 DOI: 10.1177/1479972315603714] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Emphysema on high-resolution computed tomography of the chest is the recent focus in the general practice in idiopathic pulmonary fibrosis (IPF). However, adequate attention has not been paid to obstructive disorder. Therefore, we retrospectively evaluated the association between the degree of airway obstruction and longevity in IPF subjects, with a hypothesis that lower forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) has an impact on prognosis. One hundred and fourteen consecutive IPF subjects who had been diagnosed with IPF and had undergone evaluation including pulmonary function test from January 2008 to May 2013 were included in the study. The relationship between baseline data and survival was examined. FEV1/FVC was widely distributed, ranging from 48.6% to 100%. On both univariate and multivariate Cox's regression analyses, lower FEV1/FVC was significantly associated with better survival (hazard ratio of 1.07 and 1.04 and 95% confidential interval of 1.03-1.10 and 1.01-1.08, respectively). Even on analysis with backward selection, FEV1/FVC remained a significant prognostic factor. FEV1/FVC is widely distributed and negatively predicts survival in IPF. A FEV1/FVC should be assessed in "real-world" general practice. Also, the effect of smoking on the clinical course of IPF should be investigated further.
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Affiliation(s)
- Osamu Nishiyama
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Ryo Yamazaki
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Akiko Sano
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Toshiyuki Yamagata
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Hiroyuki Sano
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Takashi Iwanaga
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Yuji Higashimoto
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Hiroaki Kume
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
| | - Yuji Tohda
- Department of Respiratory Medicine and Allergology, Faculty of Medicine, Kinki University, Onohigashi, Osakasayama, Osaka, Japan
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Higashimoto Y, Yamagata T, Maeda K, Honda N, Sano A, Nishiyama O, Sano H, Iwanaga T, Chiba Y, Fukuda K, Tohda Y. Influence of comorbidities on the efficacy of pulmonary rehabilitation in patients with chronic obstructive pulmonary disease. Geriatr Gerontol Int 2015; 16:934-41. [PMID: 26246006 DOI: 10.1111/ggi.12575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2015] [Indexed: 11/29/2022]
Abstract
AIM To evaluate the influence of comorbidities and aging on pulmonary rehabilitation (PR) efficacy in patients with chronic obstructive pulmonary disease (COPD). METHODS This was a retrospective cohort study of patients with COPD attending an outpatient PR program. Comorbidity information was collected with the Charlson Index, BODE index and COPD-specific comorbidity test, and also included other common conditions not included in these indexes. The efficacy of PR was defined as a 54-m increase in 6-min walk distance or a four-point decrease in St. George's Respiratory Questionnaire score. Patients were divided into two age groups according to the median age of 72 years. RESULTS A total of 21 of 52 patients (40%) showed a clinically significant benefit by the 6-min walk distance, and 29 patients (55.8%) by the St. George's Respiratory Questionnaire score. PR efficacy was not different between the elderly group and the younger group by either parameter. A total of 98% of the patients had at least one chronic comorbidity. Hypertension was the most frequently reported comorbidity (28.5%). Higher body mass index, Hospital Anxiety and Depression Scale anxiety score and St. George's Respiratory Questionnaire total score were associated with a good response to PR by the 6-min walk distance. None of the individual comorbidities or indexes were correlated with the efficacy of PR. Multiple logistic regression analysis showed that body mass index was independently associated with the response to PR. CONCLUSIONS PR is equally effective in elderly and younger patients with COPD, with efficacy influenced by body mass index and anxiety. Geriatr Gerontol Int 2016; 16: 934-941.
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Affiliation(s)
- Yuji Higashimoto
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Toshiyuki Yamagata
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Kazushige Maeda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Noritsugu Honda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Akiko Sano
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Osamu Nishiyama
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Hiroyuki Sano
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Takashi Iwanaga
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Yasutaka Chiba
- Division of Biostatistics, Clinical Research Center, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Kanji Fukuda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Yuji Tohda
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
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15
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Maeda K, Higashimoto Y, Honda N, Shiraishi M, Hirohata T, Minami K, Iwasaki T, Chiba Y, Yamagata T, Terada K, Matsuo Y, Shuntoh H, Tohda Y, Fukuda K. Effect of a postoperative outpatient pulmonary rehabilitation program on physical activity in patients who underwent pulmonary resection for lung cancer. Geriatr Gerontol Int 2015; 16:550-5. [PMID: 25953128 DOI: 10.1111/ggi.12505] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2015] [Indexed: 11/27/2022]
Abstract
AIM Physical activity (PA) has been associated with an improvement in survival for individuals with cancer. However, little is known about the effect of postoperative pulmonary rehabilitation on PA after lobectomy in patients with lung cancer. The present study investigated the effect of outpatient rehabilitation on PA in patients with cancer after lung resection. METHODS A total of 19 patients with lung cancer were recruited for this study and completed a preoperative rehabilitation program. One group of nine patients completed a postoperative outpatient pulmonary rehabilitation program (rehabilitation) and another group of 10 patients did not (control), but were similarly followed up. Preoperative lung function, assessed by forced expiratory volume in 1 s (FEV1 ), body mass index (BMI) and St. George's Respiratory Questionnaire (SGRQ) score were not different between groups. PA was measured before and 2 months after surgery using a three-axis accelerometer for 5-6 days. PA level (PAL) was defined as total energy expenditure divided by basal metabolic rate. RESULTS Preoperative PAL was not different between groups. However, postoperative versus preoperative PAL was significantly lower in the control versus the rehabilitation group (P < 0.01), and PAL decline was less for the rehabilitation versus the control group (P < 0.001). A subgroup analysis showed improvement in postoperative PAL in rehabilitation patients aged <75 years and older. CONCLUSIONS Two months after lung resection surgery, patients had not recovered to the preoperative PAL. However, compared with the control group, there was an improvement in the postoperative PAL in patients, including older patients, who underwent outpatient pulmonary rehabilitation. Geriatr Gerontol Int 2016; 16: 550-555.
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Affiliation(s)
- Kazushige Maeda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Yuji Higashimoto
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Noritsugu Honda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Masashi Shiraishi
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Takeshi Hirohata
- Department of Surgery, Division of Thoracic Surgery, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Kenji Minami
- Department of Surgery, Division of Thoracic Surgery, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Takuya Iwasaki
- Department of Surgery, Division of Thoracic Surgery, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Yasutaka Chiba
- Division of Biostatistics, Clinical Research Center, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Toshiyuki Yamagata
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Katsuhiko Terada
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Yoshimi Matsuo
- Research Institute for Health and Exercise Sciences, Graduate School of Health and Sports Sciences, Mukogawa Women's University, Nishinomiya, Hyogo Prefecture, Japan
| | - Hisato Shuntoh
- Faculty of Rehabilitation, Kobe Gakuin University, Kobe, Hyogo Prefecture, Japan
| | - Yuji Tohda
- Department of Respiratory Medicine and Allergology, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
| | - Kanji Fukuda
- Department of Rehabilitation Medicine, Kinki University, Faculty of Medicine, Osakasayama, Osaka, Japan
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16
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Yamagata T, Shozugawa K, Okumura R, Takamiya K, Matsuo M. A study on redox sensitive elements in the sediments at dredged trenches in Tokyo Bay by instrumental neutron activation analysis. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-014-3503-5] [Citation(s) in RCA: 2] [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] [Indexed: 11/28/2022]
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17
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Maeda Y, Hirasawa D, Fujita N, Obana T, Sugawara T, Ohira T, Harada Y, Yamagata T, Suzuki K, Koike Y, Kusaka J, Tanaka M, Noda Y. A prospective, randomized, double-blind, controlled trial on the efficacy of carbon dioxide insufflation in gastric endoscopic submucosal dissection. Endoscopy 2014; 45:335-41. [PMID: 23468193 DOI: 10.1055/s-0032-1326199] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND STUDY AIMS Carbon dioxide (CO2) insufflation is expected to be safe and effective in endoscopic submucosal dissection (ESD) as well as in other endoscopic procedures. The present study aimed to clarify the usefulness and safety of CO2 insufflation in gastric ESD. PATIENTS AND METHODS A total of 102 consecutive patients were randomly assigned to CO2 insufflation (CO2 group, n = 54) or air insufflation (Air group, n = 48). Abdominal pain and distension were chronologically recorded on a 100-mm visual analog scale (VAS). The volume of residual gas in the digestive tract was measured by computed tomography performed immediately after ESD. RESULTS Abdominal pain on a 100-mm VAS in the CO2 vs. Air group was 4 vs. 3 immediately after ESD, 4 vs. 4 one hour after the procedure, 3 vs. 3 three hours after the procedure, and 1 vs. 4 the next morning, showing no difference between the groups. In addition, there was no difference in abdominal distension on the 100-mm VAS over the time course of the study. The volume of residual gas in the digestive tract in the CO2 group was significantly smaller than that in the Air group (643 mL vs. 1037 mL, P < 0.001). The dose of sedative drugs did not differ between the groups. Neither the incidences of complications nor clinical courses differed between the groups. CONCLUSIONS Compared with air insufflation, CO2 insufflation during gastric ESD significantly reduced the volume of residual gas in the digestive tract but not the VAS score of abdominal pain and distension.
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Affiliation(s)
- Y Maeda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan.
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18
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Kume D, Akahoshi S, Song J, Yamagata T, Wakimoto T, Nagao M, Matsueda S, Nagao N. Intermittent breath holding during moderate bicycle exercise provokes consistent changes in muscle oxygenation and greater blood lactate response. J Sports Med Phys Fitness 2013; 53:327-335. [PMID: 23715258] [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: 06/02/2023]
Abstract
AIM This study examined the effect of intermittent breath holding (IBH) on physiological response, including oxygenation in working muscle, to moderate-intensity exercise. METHODS Thirteen men performed bicycle exercise for 5 min at 65% of peak oxygen uptake with normal breathing (NB) and with IBH. Muscle oxygenation, concentration changes of oxyhemoglobin (ΔOxy-Hb), deoxyhemoglobin (ΔDeoxy-Hb) and total hemoglobin (ΔTotal-Hb), in the right vastus lateralis were continuously monitored using near-infrared spectroscopy (NIRS). Finger capillary blood samples were taken after exercise for analyzing blood lactate concentration (BLa). RESULTS NIRS parameters showed acute changes to each BH episode in the IBH condition (Total-Hb and ΔOxy-Hb decreased, ΔDeoxy-Hb increased). Accordingly, in the IBH condition, ΔOxy-Hb was lower (P<0.05) and ΔDeoxy-Hb was higher (P<0.05) compared to that in the NB condition, whereas there was no difference in ΔTotal-Hb in the both conditions. BLa levels were greater (P<0.05) in the IBH condition compare to the NB condition. CONCLUSION These results suggest that IBH during moderate-intensity exercise provokes consistent changes in muscle oxygenation, leading to lower tissue oxygenation. Our data also indicate that exercise with IBH induces higher BLa.
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Affiliation(s)
- D Kume
- Department of Health and Sports Science, Kawasaki University of Medical WelfareKurashiki, Japan.
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19
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Yamagata T, Sugie H. [Expert opinion: investigation of drug therapy in children with autistic symptoms]. No To Hattatsu 2013; 45:223-226. [PMID: 23785839] [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: 06/02/2023]
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20
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Nagashima M, Mori M, Monden Y, Yamagata T, Nozaki Y, Fukuda T, Sugie H, Momoi M. [A retrospective study of 18 cases of benign infantile seizures with mild gastroenteritis]. No To Hattatsu 2013; 45:62-63. [PMID: 23593749] [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: 06/02/2023]
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21
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Nagata T, Takami T, Yamagata T, Uda T, Naito K, Ohata K. Significant relationship between local angle at fused segments and C2-7 angle: Average duration of longer than 20 years after anterior cervical discectomy and fusion. J Craniovertebr Junction Spine 2012; 2:62-6. [PMID: 23125490 PMCID: PMC3486001 DOI: 10.4103/0974-8237.100054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background: The authors have focused their attention to the radiological durability of cervical sagittal alignment after anterior cervical discectomy and fusion (ACDF) using autologous bone grafting. Materials and Methods: Among the patients who underwent ACDF with trans-unco-discal (TUD) approach between 1976 and 1997, 22 patients (16 males and 6 females) made return visits for a clinical evaluation. Patients with trauma or previously treated by anterior cervical fusion or by posterior decompression were excluded from the present study. Clinical evaluation included adjacent segment degeneration (ASD), osseous fusion, local angle at the fused segments and C2-7 angle of cervical spine. Results: The duration after ACDF ranged from 13 to 34 years with an average of 21.3 ± 7.0 years. A single level fusion was done on 8 patients, 2 levels on 11 patients, 3 levels on 2 patients, and 4 levels on 1 patient. Imaging studies indicated that 12 of the 22 patients (54.5%) were graded as having symptomatic ASD. Osseous bony fusion at ACDF was recognized in all cases. None of the patients demonstrated kyphotic malalignment of the cervical spine. Average degrees of local angle at the fused segments and the C2-7 angle were 7.06 and 17.6, respectively. Statistical analysis indicated a significant relationship between the local at the fused segments and C2-7 angles. Conclusions: Sagittal alignment of the cervical spine was durable long after ACDF when the local angle at the fused segments was well stabilized.
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Affiliation(s)
- T Nagata
- Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan
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22
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Uda T, Takami T, Sakamoto S, Tsuyuguchi N, Yamagata T, Ohata K. Normal variation of diffusion tensor parameters of the spinal cord in healthy subjects at 3.0-Tesla. J Craniovertebr Junction Spine 2012; 2:77-81. [PMID: 23125493 PMCID: PMC3486000 DOI: 10.4103/0974-8237.100060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AIMS The purposes of the present study were to clarify the normal variation and to determine the normal reference values of diffusion tensor (DT) parameters (mean diffusivity [MD] and fractional anisotropy [FA]) of the spinal cord in single-shot fast spin-echo-based sequence at 3.0-Tesla (3T). MATERIALS AND METHODS Thirty healthy subjects (mean age = 44.2 years, range = 20-72 years) were enrolled for this study. Mean values of MD and FA in six spinal levels (C2/3, C3/4, C4/5, C5/6, C6/7, and C7/Th1) were measured. Mean values, variances, and distributions of the MD and FA in each spinal level were analyzed. Age-dependent change of MD and FA as well as correlation between MD and FA was also analyzed. RESULTS At all spinal levels, the values can be considered to be Gaussian distribution in MD but not in FA. A significant statistical negative correlation was observed between aging and the values of MD (r = 0.429, P = 0.018), but insignificant between the values of FA (P = 0.234). A slight significant statistical negative correlation was observed between the values of MD and FA (r = 0.156, P = 0.037). One way repeated measures analysis of variance indicated the significant difference between the spinal levels in both MD (P = 0.003) and FA (P < 0.0001). CONCLUSIONS The analyzed data in the present study would be helpful for comparison when investigating the spinal condition of spinal disorders.
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Affiliation(s)
- T Uda
- Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka City, Japan
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23
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Saji NH, Goswami BN, Vinayachandran PN, Yamagata T. A dipole mode in the tropical Indian Ocean. Nature 2012; 401:360-3. [PMID: 16862108 DOI: 10.1038/43854] [Citation(s) in RCA: 414] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/1999] [Accepted: 07/27/1999] [Indexed: 11/09/2022]
Abstract
For the tropical Pacific and Atlantic oceans, internal modes of variability that lead to climatic oscillations have been recognized, but in the Indian Ocean region a similar ocean-atmosphere interaction causing interannual climate variability has not yet been found. Here we report an analysis of observational data over the past 40 years, showing a dipole mode in the Indian Ocean: a pattern of internal variability with anomalously low sea surface temperatures off Sumatra and high sea surface temperatures in the western Indian Ocean, with accompanying wind and precipitation anomalies. The spatio-temporal links between sea surface temperatures and winds reveal a strong coupling through the precipitation field and ocean dynamics. This air-sea interaction process is unique and inherent in the Indian Ocean, and is shown to be independent of the El Niño/Southern Oscillation. The discovery of this dipole mode that accounts for about 12% of the sea surface temperature variability in the Indian Ocean--and, in its active years, also causes severe rainfall in eastern Africa and droughts in Indonesia--brightens the prospects for a long-term forecast of rainfall anomalies in the affected countries.
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Affiliation(s)
- N H Saji
- Institute for Global Change Research, SEAVANS N 7F, 1-2-1 Shibaura, Minato-ku, Tokyo 105 6791, Japan
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24
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Iwamoto C, Utsunomiya H, Tamii A, Akimune H, Nakada H, Shima T, Yamagata T, Kawabata T, Fujita Y, Matsubara H, Shimbara Y, Nagashima M, Suzuki T, Fujita H, Sakuda M, Mori T, Izumi T, Okamoto A, Kondo T, Bilgier B, Kozer HC, Lui YW, Hatanaka K. Separation of pygmy dipole and M1 resonances in 90Zr by a high-resolution inelastic proton scattering near 0°. Phys Rev Lett 2012; 108:262501. [PMID: 23004969 DOI: 10.1103/physrevlett.108.262501] [Citation(s) in RCA: 2] [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] [Received: 04/28/2012] [Indexed: 06/01/2023]
Abstract
A high-resolution measurement of inelastic proton scattering off (90)Zr near 0° was performed at 295 MeV with a focus on a pronounced strength previously reported in the low-energy tail of giant dipole resonance. A forest of fine structure was observed in the excitation energy region 7-12 MeV. A multipole decomposition analysis of the angular distribution for the forest was carried out using the ECIS95 distorted-wave Born approximation code with the Hartree-Fock plus random-phase approximation model of E1 and M1 transition densities and inclusion of E1 Coulomb excitation. The analysis separated pygmy dipole and M1 resonances in the forest at E(PDR)=9.15±0.18 MeV with Γ(PDR)=2.91±0.64 MeV and at E(M1)=9.53±0.06 MeV with Γ(M1)=2.70±0.17 MeV in the Lorentzian function, respectively. The B(E1)↑ value for pygmy dipole resonance over 7-11 MeV is 0.75±0.08 e(2)fm(2), which corresponds to 2.1±0.2% of the Thomas-Reiche-Kuhn sum rule.
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Affiliation(s)
- C Iwamoto
- Department of Physics, Konan University, Okamoto 8-9-1, Higashinada, Kobe 658-8501, Japan
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25
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Maeda Y, Hirasawa D, Fujita N, Obana T, Sugawara T, Ohira T, Harada Y, Yamagata T, Suzuki K, Koike Y, Yamamoto Y, Kusaka Z, Noda Y. A pilot study to assess mediastinal emphysema after esophageal endoscopic submucosal dissection with carbon dioxide insufflation. Endoscopy 2012; 44:565-71. [PMID: 22407383 DOI: 10.1055/s-0031-1291664] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Mediastinal emphysema sometimes develops following esophageal endoscopic submucosal dissection (ESD) without perforation because the esophagus has no serosa. Carbon dioxide (CO2) insufflation during esophageal ESD may reduce the incidence of mediastinal emphysema. The aim of the present study was to compare the incidence and severity of post-ESD mediastinal emphysema in patients receiving CO2 insufflation vs. standard air insufflation during esophageal ESD. PATIENTS AND METHODS A total of 27 patients who had undergone esophageal ESD with insufflation of CO2 between July 2009 and March 2010 were enrolled in this study (CO2 group). Another 105 patients who had undergone esophageal ESD with air insufflation between March 2004 and May 2009 were included as historical controls (air group). Multi-detector row computed tomography (MDCT) was carried out immediately after ESD. A conventional chest radiograph was taken the next day. Mediastinal emphysema findings on MDCT and radiography were compared between the groups. RESULTS Mediastinal emphysema detected by chest radiography was 0 % in the CO2 group vs. 6.6 % in the air group (n.s.). Mediastinal emphysema on MDCT was significantly less frequent in the CO2 group compared with the air group (30 % vs. 63 %; P = 0.002). The severity of mediastinal emphysema also tended to be lower in the CO2 group. CONCLUSIONS Whereas mediastinal emphysema detected by radiography is not so common, MDCT immediately after ESD revealed a certain prevalence of post-ESD mediastinal emphysema. Insufflation of CO2 rather than air during esophageal ESD significantly reduced postprocedural mediastinal emphysema. CO2 can be considered as insufflating gas for esophageal ESD.
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Affiliation(s)
- Y Maeda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Miyagi, Japan.
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26
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Ohkubo M, Nakagawa Y, Yamagata T, Fujisawa N. Quantitative visualization of temperature field in non-luminous flame by flame reaction technique. J Vis (Tokyo) 2011. [DOI: 10.1007/s12650-011-0109-7] [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: 11/30/2022]
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27
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Higashimoto Y, Yamagata T, Honda N, Satoh R, Sano H, Iwanaga T, Miyhara T, Muraki M, Tomita K, Tohda Y, Fukuda K. Clinical and inflammatory factors associated with body mass index in elderly patients with chronic obstructive pulmonary disease. Geriatr Gerontol Int 2011; 11:32-8. [PMID: 20609004 DOI: 10.1111/j.1447-0594.2010.00629.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM Body mass index (BMI) is closely associated with mortality in chronic obstructive pulmonary disease (COPD). Systemic inflammation has been suggested as one of the mechanisms of malnutrition in COPD. This study investigated the relationships of clinical variables and inflammatory biomarkers with BMI in COPD in an aging population. METHODS Baseline levels of serum biomarkers were determined for 69 patients with stable male COPD. Multivariate logistic regression was used to evaluate associations between clinical variables, including emphysema scores, and biomarkers with BMI. RESULTS Twenty eight patients were categorized as low BMI (<20 kg/m2). BMI was inversely correlated with serum α1-antitrypsin (α1-AT) concentration and emphysema scores, and was positively correlated with forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1). Multivariate logistic regression analysis showed that α1-AT was independently associated with BMI. CONCLUSION Low BMI was associated with the severity of emphysema and systemic inflammation reflected by elevated α1-AT level.
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Affiliation(s)
- Yuji Higashimoto
- Department of Rehabilitation Medicine, Kinki University School of Medicine, Osaka, Japan.
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28
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Higashimoto Y, Honda N, Yamagata T, Matsuoka T, Maeda K, Satoh R, Nishiyama O, Sano H, Iwanaga T, Miyara T, Muraki M, Tomita K, Kume H, Miyai I, Tohda Y, Fukuda K. Activation of the Prefrontal Cortex Is Associated with Exertional Dyspnea in Chronic Obstructive Pulmonary Disease. Respiration 2011; 82:492-500. [DOI: 10.1159/000324571] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2010] [Accepted: 01/25/2011] [Indexed: 11/19/2022] Open
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Sakai T, Koyanagi M, Nakata K, Fujisaki H, Yamagata T, Hidaka K, Suzuki Y, Nakamura N. Posterior shear force and posterior tibial displacement using a sling bridge in patients with posterior cruciate ligament insufficiency. Br J Sports Med 2011. [DOI: 10.1136/bjsm.2011.084038.169] [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: 11/04/2022]
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30
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Montecillo ME, Yoshidome T, Yamagata T, Yamasaki T, Mitsushio M, Sarno BJ, Higo M. Concentration Determination of Individual Components in Methanol–Raffinose Mixtures Using Diffusion through Agar Membrane Attached to a Surface Plasmon Resonance Sensor. BCSJ 2010. [DOI: 10.1246/bcsj.20100176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Fujita E, Dai H, Tanabe Y, Zhiling Y, Yamagata T, Miyakawa T, Tanokura M, Momoi MY, Momoi T. Autism spectrum disorder is related to endoplasmic reticulum stress induced by mutations in the synaptic cell adhesion molecule, CADM1. Cell Death Dis 2010; 1:e47. [PMID: 21364653 PMCID: PMC3032316 DOI: 10.1038/cddis.2010.23] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with an unknown molecular pathogenesis. A recent molecular focus has been the mutated neuroligin 3, neuroligin 3(R451C), in gain-of-function studies and for its role in induced impairment of synaptic function, but endoplasmic reticulum (ER) stress induced by mutated molecules also deserves investigation. We previously found two missense mutations, H246N and Y251S, in the gene-encoding synaptic cell adhesion molecule-1 (CADM1) in ASD patients, including cleavage of the mutated CADM1 and its intracellular accumulation. In this study, we found that the mutated CADM1 showed slightly reduced homophilic interactions in vitro but that most of its interactions persist. The mutated CADM1 also showed morphological abnormalities, including shorter dendrites, and impaired synaptogenesis in neurons. Wild-type CADM1 was partly localized to the ER of C2C5 cells, whereas mutated CADM1 mainly accumulated in the ER despite different sensitivities toward 4-phenyl butyric acid with chemical chaperone activity and rapamycin with promotion activity for degradation of the aggregated protein. Modeling analysis suggested a direct relationship between the mutations and the conformation alteration. Both mutated CADM1 and neuroligin 3(R451C) induced upregulation of C/EBP-homologous protein (CHOP), an ER stress marker, suggesting that in addition to the trafficking impairment, this CHOP upregulation may also be involved in ASD pathogenesis.
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Affiliation(s)
- E Fujita
- Division of Differentiation and Development, National Institute of Neuroscience, Kodaira, Tokyo, Japan
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Syuto T, Fujisawa N, Takasugi T, Yamagata T. Flow visualization and scanning PIV measurement of three-dimensional structure in near field of strongly buoyant jet. J Vis (Tokyo) 2010. [DOI: 10.1007/s12650-010-0027-0] [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: 10/19/2022]
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Sato R, Tomita K, Sano H, Ichihashi H, Yamagata S, Sano A, Yamagata T, Miyara T, Iwanaga T, Muraki M, Tohda Y. The strategy for predicting future exacerbation of asthma using a combination of the Asthma Control Test and lung function test. J Asthma 2009; 46:677-82. [PMID: 19728204 DOI: 10.1080/02770900902972160] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Various factors have been reported to be useful for predicting future exacerbations. OBJECTIVE This study was intended to determine a usefulness of a combination of a patient-based questionnaire, such as the Asthma Control Test (ACT) score with objective assessments, such as forced expiratory volume in 1 second (FEV(1)) and/or exhaled nitric oxide (FE(NO)), for predicting future exacerbations in adult asthmatics. METHODS We therefore enrolled 78 subjects with mild to moderate asthma, who were clinically stable for 3 months who all had been regularly receiving inhaled steroid treatment. All subjects underwent a routine assessment of asthma control including the ACT score, spirometry, and FE(NO), and then were followed up until a severe exacerbation occurred. The predictors of an increased risk of severe exacerbation were identified and validated using decision trees based on a classification and regression tree (CART) analysis. The properties of the developed models were the evaluated with the area under the ROC curve (AUC) (95% confidence interval [CI]). RESULTS The CART analysis automatically selected the variables and cut-off points, the ACT score <or=23 and FEV(1) <or= 91.8%, with the greatest capacity for discriminating future exacerbations within one year or not. When the probability was calculated by the likelihood ratio of a positive test (LP), the ACT score <or=23 was identified with a 60.3% probability, calculated by 1.82 of LP, whereas the combined ACT score <or=23 and the percentage of predicted FEV(1) <or= 91.8% were identified with an 85.0% probability, calculated by an LP score of 5.43, for predicting future exacerbation. CONCLUSION These results demonstrated that combining the ACT score and percentage of predicted FEV(1), but not FE(NO,) can sufficiently stratify the risk for future exacerbations within one year.
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Affiliation(s)
- Ryuji Sato
- Department of Respiratory Medicine and Allergology, Kinki University School of Medicine, Osaka-Sayama, Osaka, Japan
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Sugiyama M, Funauchi M, Yamagata T, Nozaki Y, Yoo BS, Ikoma S, Kinoshita K, Kanamaru A. Predominant inhibition of Th1 cytokines in New Zealand black/white F1 mice treated with FK506. Scand J Rheumatol 2009; 33:108-14. [PMID: 15163112 DOI: 10.1080/03009740310004351] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The T-helper 1/T-helper 2 (Th1/Th2) cell balance was examined in 6-month-old New Zealand black/white F1 (B/WF1) mice treated with an immunosuppressive agent, FK506. The survival rate of mice treated with 10 mg/kg/day of FK506 was 7/8, while that of those treated with 2.5 mg/kg/day was 5/8, and 4/8 after treatment for 8 weeks with placebo. Proteinuria, which was already positive in all mice before the treatment, in the seven of eight mice treated with 10 mg/kg/day remained mildly positive (< or = 1+), while seven of eight mice treated with 2.5 mg/kg/day and six of eight mice treated with the placebo showed severe proteinuria (> or = 2+). Pathological changes in the kidneys of mice treated with 10 mg/kg/day of FK506 were less severe than in mice treated with the placebo or 2.5 mg/kg/day of FK506. Expression of mRNA was unchanged for all cytokines determined in the groups treated with 2.5 mg/kg/day of FK506 or placebo. In contrast, expression of mRNA for interleukin (IL)-2, and interferon (IFN)-gamma was suppressed, while that for IL-4 and IL-10 was not suppressed in the group treated with 10 mg/kg of FK506. The serum levels of IgG-class anti-DNA antibodies, which had been elevated before the treatment, were suppressed--especially in the IgG2a subclass--and the deposition of IgG2a and IgG2b in the glomeruli was reduced in the group treated with 10 mg/kg/day of FK506 compared with the other groups. These findings suggest that an improvement in the lupus nephritis of 6-month-old B/WF1 mice induced by FK506 might be associated with a predominant inhibition of Th1 cytokine.
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Affiliation(s)
- M Sugiyama
- Division of Haematology, Nephrology, and Rheumatology, Kinki University School of Medicine, Osaka, Japan.
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Abstract
The prevalence of chronic obstructive pulmonary disease (COPD) has been increasing. However, COPD is often underdiagnosed. The objective of this study was to determine how many outpatients had persistent airflow limitation and could be diagnosed as COPD by post-bronchodilator spirometry. We also evaluated whether the newly diagnosed patients had any symptoms. All outpatients with liver or general diseases over 40 years old who regularly visited to our hospital were tested for pulmonary function by spirometry. Patients with airflow limitation by the first screening spirometry had further examinations including post-bronchodilator spirometry and chest radiograph by pulmonary specialists. A total of 288 patients accepted a first spirometry. The most common chronic diseases of these patients were chronic hepatitis (33.7%), fatty liver (26.4%), liver cirrhosis (8.3%), diabetes (3.5%) and hypertension (3.1%). Approximately half of the patients had a smoking history. 44 of 288 patients (15.3%) showed airflow limitation by pre-bronchodilator spirometry. Of these, 8 patients did not show airflow limitation by a repeat pre-bronchodilator spirometry nor did 5 patients by post-bronchodilator spirometry. The rest were diagnosed as COPD (80.6%), asthma (16.1%) and bronchiectasis (3.2%). The prevalence of COPD was 8.7%. Approximately half of the patients (13/25, 52.0%) diagnosed as COPD had never complained of any respiratory symptoms. Because symptoms such as dyspnea on exertion, cough and sputum are less sensitive for the diagnosis of COPD, the propagation of spirometry in a general practice/setting should be recommended for establishing the diagnosis rate of COPD rather than relying on the presence of respiratory symptoms.
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Affiliation(s)
- Keiichiro Akamatsu
- Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan Wakayama, Japan.
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Yanagisawa S, Sugiura H, Yokoyama T, Yamagata T, Ichikawa T, Akamatsu K, Koarai A, Hirano T, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. The Possible Role of Hematopoietic Cell Kinase in the Pathophysiology of COPD. Chest 2009; 135:94-101. [DOI: 10.1378/chest.07-3020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Valdez MB, Mizutani M, Kinoshita K, Fujiwara A, Yazawa H, Yamagata T, Shimada K, Namikawa T. 112. DIFFERENTIAL DEVELOPMENT OF SEX-RELATED CHARACTERS OF THE GSP AND PNP/DO CHICKENS AFTER LEFT-OVARIECTOMY. Reprod Fertil Dev 2009. [DOI: 10.1071/srb09abs112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
To elucidate the strain difference in the sex reversal of genetic female to phenotypic male, GSP and PNP/DO females were left ovariectomized (ovx) between one day to three days after hatching and the degree of masculinization based on sex-related characters, histological analysis of the right gonad and hormone assay were assessed at one year of age. The GSP and PNP/DO inbred lines were both derived from the Fayoumi breed and are only differentiated based on red blood cell antigens type carried by each of the inbred line. Comb and wattles were found to be significantly bigger (P < 0.05) in the GSP ovx compared to the PNP/DO ovx, although male plumage pattern were more pronounced in the PNP/DO ovx. Spurs were observed both in the GSP and PNP/DO ovx with no significant difference (P > 0.05) in length to the respective male controls and body weight were not significantly different (P > 0.05) to the female controls. The size of the right gonad were significantly bigger (P < 0.05) in the GSP ovx than the PNP/DO ovx. Positive correlations were found in the sex related characters as well as plasma testosterone level and the right gonad weight both in the GSP and PNP/DO ovx except for the spur length which resulted into a negative correlation in the PNP/DO ovx. Histological analysis revealed that the right gonad of PNP/DO ovx are morphologically developed compared to GSP ovx showing more advance stages of spermatogenesis. It could be inferred that PNP/DO females which exhibit hereditary persistent right oviduct, are more responsive to the masculinizing effect of ovariectomy compared to GSP females, suggesting that genetic background may have a possible contribution on the degree of masculinization and subsequent development of sex related characters.
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Yamagata T, Yamagata Y, Nishimoto T, Hirano T, Nakanishi M, Minakata Y, Ichinose M, Dagenais A, Berthiaume Y. The regulation of amiloride-sensitive epithelial sodium channels by tumor necrosis factor-alpha in injured lungs and alveolar type II cells. Respir Physiol Neurobiol 2008; 166:16-23. [PMID: 19150416 DOI: 10.1016/j.resp.2008.12.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Revised: 11/21/2008] [Accepted: 12/12/2008] [Indexed: 01/11/2023]
Abstract
Alveolar liquid clearance, which mainly depends on sodium transport in alveolar epithelial cells, is an important mechanism by which excess water in the alveoli is reabsorbed during the resolution of pulmonary edema. In this study, we examined the regulation of epithelial sodium channel (ENaC), the main contributor to sodium transport, during acute lung injury and the direct impact of tumor necrosis factor-alpha (TNF-alpha), one of the important cytokines in acute lung injury, on the ENaC regulation. During the development of pulmonary edema, the increases in the number of neutrophils and the levels of TNF-alpha in blood and bronchoalveolar lavage were seen. In parallel, the mRNA expression of the alpha-, beta- and gamma-ENaC subunits in the whole lung tissue was inhibited to 72.0, 47.8 and 53.9%, respectively. The direct exposure of rat alveolar type II cells to TNF-alpha inhibited the mRNA expression of alpha- and gamma-ENaC to 64.0 and 78.0%, but not that of the beta-ENaC. TNF-alpha also inhibited the ENaC function as indicated by the reduction of amiloride-sensitive current (control 4.4, TNF-alpha 1.9 microA/cm(2)). These data suggest that TNF-alpha may affect the pathophysiology of acute lung injury and pulmonary edema through the inhibition of alveolar liquid clearance and sodium transport.
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Affiliation(s)
- Toshiyuki Yamagata
- Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1, Kimiidera, Wakayama 641-8509, Japan.
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Yamagata T, Maeda Y, Miyake H, Kataoka Y, Tani K. Synthesis, structure, and reactivity of ruthenium–zinc trinuclear hydrides with phosphine ligands. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308087072] [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: 11/10/2022] Open
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Kawayama T, Minakata Y, Matsunaga K, Yamagata T, Tsuda T, Kinoshita M, Iwanaga T, Ichinose M, Aizawa H. Validation of symptom-based COPD questionnaires in Japanese subjects. Respirology 2008; 13:420-6. [PMID: 18399866 DOI: 10.1111/j.1440-1843.2008.01241.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVE Symptom-based questionnaires may be helpful in diagnosing patients with COPD. The aim of this study was to determine whether two COPD questionnaires designed in Western countries were applicable to Japanese and other Asian patients. METHODS The participants were Japanese people aged 40 years and over. Each subject answered questions on demographics and symptoms and underwent spirometry before and after administration of a bronchodilator. Questionnaire A was designed to identify previously undiagnosed COPD and questionnaire B was designed to differentiate between COPD and asthma. RESULTS The numbers of COPD patients who answered questionnaires A and B were 33 of 169 (19.5%) and 112 of 168 (66.7%), respectively. Comparison of the COPD group with the non-COPD group revealed a significant difference in total score in both questionnaire A and questionnaire B (both P < 0.001). The area under the receiver operating characteristic curve (AUC-ROC) for questionnaire A was 0.791. With a cut-off value of 16.5 points, the sensitivity and specificity were 0.939 and 0.404, and with a 19.5-point cut-off, sensitivity and specificity were 0.848 and 0.647, respectively. The AUC-ROC for questionnaire B was 0.765. With cut-off values of 18.5 and 24.5 points, the respective sensitivities and specificities were 0.946 and 0.393, and 0.741 and 0.607. CONCLUSIONS A simple self-administered questionnaire can help to diagnose COPD in Japanese subjects. When these questionnaires are used in Japan, cut-off values should be set somewhat higher than in Western countries.
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Affiliation(s)
- Tomotaka Kawayama
- Division of Respirology, Neurology and Rheumatology, Kurume University School of Medicine, Kurume, Japan
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Yamagata T, Urano H, Weeber E, Nelson D, Nishijima I. Impaired hippocampal synaptic function in secretin deficient mice. Neuroscience 2008; 154:1417-22. [DOI: 10.1016/j.neuroscience.2008.04.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2007] [Revised: 04/09/2008] [Accepted: 04/10/2008] [Indexed: 10/22/2022]
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Utsunomiya H, Goriely S, Kondo T, Kaihori T, Makinaga A, Goko S, Akimune H, Yamagata T, Toyokawa H, Matsumoto T, Harano H, Hohara S, Lui YW, Hilaire S, Péru S, Koning AJ. M1 gamma strength for zirconium nuclei in the photoneutron channel. Phys Rev Lett 2008; 100:162502. [PMID: 18518192 DOI: 10.1103/physrevlett.100.162502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Indexed: 05/26/2023]
Abstract
Photoneutron cross sections were measured for 91Zr, 92Zr, and 94Zr near the neutron separation energy with quasimonochromatic gamma rays. The data exhibit some extra components around the neutron threshold. A coherent analysis of the photoneutron data for 92Zr together with the neutron capture on 91Zr based on the microscopic Hartree-Fock-Bogoliubov plus quasiparticle random-phase approximation model for the E1 strength has revealed the presence of an M1 resonance at 9 MeV. The microscopic approach systematically shows the same M1 strength in the photoneutron cross section for 91Zr and 94Zr. The total M1 strength is about 75% larger than the strength predicted by the systematics, being qualitatively consistent with the giant M1 resonance observed in the inelastic proton scattering.
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Affiliation(s)
- H Utsunomiya
- Department of Physics, Konan University, Okamoto 8-9-1, Higashinada, Kobe 658-8501, Japan
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Minakata Y, Sugiura H, Yamagata T, Yanagisawa S, Ichikawa T, Koarai A, Akamatsu K, Hirano T, Matsunaga K, Ichinose M. Prevalence of COPD in primary care clinics: correlation with non-respiratory diseases. Intern Med 2008; 47:77-82. [PMID: 18195495 DOI: 10.2169/internalmedicine.47.0489] [Citation(s) in RCA: 15] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Various extrapulmonary effects and comorbidities have been noted to contribute to the burden of chronic obstructive pulmonary disease (COPD). However, the relationship between the prevalence of COPD and non-respiratory diseases has not been well investigated. The aim of the present study was to determine whether or not COPD is different among patients already suffering from other diseases. METHODS Spirometry was performed by patients aged >or=40 years old with non-respiratory diseases who visited primary care clinics. Four hundred eighty-one patients performed spirometry and 7 patients were excluded because of poor spirometry maneuvers, resulting in 474 patients that were eligible for the current study. In subjects showing abnormalities in their spirograms, precise diagnoses were made using a questionnaire and chest X-ray examination. RESULTS Among the 474 patients, airflow limitation (FEV(1)/FVC<70%) was observed in 53 patients (11.2%). Forty-nine patients (10.3%) were diagnosed as COPD and 4 patients (0.8%) as bronchial asthma. Among the various diseases, the prevalence of COPD was significantly higher only in the patients with liver diseases, which was 18.8% (12 of 64 patients). The odds ratio adjusted by both the amount of smoking and age was 2.66 (95%CI 1.06-6.63, p=0.037). CONCLUSIONS The prevalence of COPD was different according to the type of disease, and patients with liver diseases had a higher prevalence of COPD.
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Affiliation(s)
- Yoshiaki Minakata
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan
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Akamatsu K, Yamagata T, Takahashi T, Miura K, Maeda S, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Hirano T, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Improvement of pulmonary function and dyspnea by tiotropium in COPD patients using a transdermal β2-agonist. Pulm Pharmacol Ther 2007; 20:701-7. [PMID: 17049894 DOI: 10.1016/j.pupt.2006.08.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Revised: 08/21/2006] [Accepted: 08/29/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND A combination of bronchodilators may be effective in the treatment of chronic obstructive pulmonary disease (COPD). We examined the effect of adding a long-acting anti-cholinergic agent (tiotropium) to a transdermal-type beta(2)-agonist (tulobuterol) on dyspnea as well as pulmonary function. METHODS In a multicentre, randomized, parallel design study, 60 COPD patients treated with the transdermal beta(2)-agonist tulobuterol were divided into a tiotropium added group (Tulo+Tio group, n=40) or transdermal beta(2)-agonist tulobuterol alone group (Tulo group, n=20), and then treated for 4 weeks after a 2 week run-in period. Pulmonary function and a dyspnea (Medical Research Council (MRC)) scale were assessed before and after the treatment. Daily peak expiratory flow (PEF) monitoring was also performed. RESULTS After 4 weeks, the Tulo+Tio group showed a significant increase in pulmonary function compared with the Tulo group; DeltaFVC (0.31+/-0.06 L vs. 0.06+/-0.05 L, p< 0.01), DeltaFEV(1) (0.15+/-0.03 L vs. -0.02+/-0.02 L, p<0.0001), and DeltaPEF (41.0+/-5.1 L/min vs. 0.5+/-3.5 L/min, p<0.0001). The MRC dyspnea scale was also significantly improved in Tulo+Tio, but not in Tulo group. CONCLUSION These results suggest that tiotropium caused a significant improvement in both pulmonary function and dyspnea in COPD patients already treated with the transdermal beta(2)-agonist tulobuterol.
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Affiliation(s)
- K Akamatsu
- Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan
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Zegers RGT, Adachi T, Akimune H, Austin SM, van den Berg AM, Brown BA, Fujita Y, Fujiwara M, Galès S, Guess CJ, Harakeh MN, Hashimoto H, Hatanaka K, Hayami R, Hitt GW, Howard ME, Itoh M, Kawabata T, Kawase K, Kinoshita M, Matsubara M, Nakanishi K, Nakayama S, Okumura S, Ohta T, Sakemi Y, Shimbara Y, Shimizu Y, Scholl C, Simenel C, Tameshige Y, Tamii A, Uchida M, Yamagata T, Yosoi M. Extraction of weak transition strengths via the (3He, t) reaction at 420 MeV. Phys Rev Lett 2007; 99:202501. [PMID: 18233136 DOI: 10.1103/physrevlett.99.202501] [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] [Received: 07/18/2007] [Indexed: 05/25/2023]
Abstract
Differential cross sections for transitions of known weak strength were measured with the (3He, t) reaction at 420 MeV on targets of 12C, 13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 120Sn, and 208Pb. Using these data, it is shown that the proportionalities between strengths and cross sections for this probe follow simple trends as a function of mass number. These trends can be used to confidently determine Gamow-Teller strength distributions in nuclei for which the proportionality cannot be calibrated via beta-decay strengths. Although theoretical calculations in the distorted-wave Born approximation overestimate the data, they allow one to understand the main experimental features and to predict deviations from the simple trends observed in some of the transitions.
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Affiliation(s)
- R G T Zegers
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
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Ichikawa T, Matsunaga K, Minakata Y, Yanagisawa S, Ueshima K, Akamatsu K, Hirano T, Nakanishi M, Sugiura H, Yamagata T, Ichinose M. Possible Impact of Salivary Influence on Cytokine Analysis in Exhaled Breath Condensate. Anal Chem�Insights 2007. [DOI: 10.4137/117739010700200007] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background Exhaled breath condensate (EBC) is thought to contain substances of the lower airway epithelial lining fluid (ELF) aerosolized by turbulent flow. However, contamination by saliva may affect the EBC when collected orally. Objective The purpose of this study was to compare the cytokine expression levels in EBC with those in saliva, and to clarify the influence of saliva on cytokine measurements of EBC. Methods EBC and saliva samples were obtained from 10 adult subjects with stable asthma. To estimate differences in the contents of substances between EBC and saliva, the total protein concentration of each sample was measured. Further, we also measured the total protein concentration of ELF obtained from another patient group with suspected lung cancer using a micro sampling probe during bronchoscopic examination and roughly estimated the dilution of EBC by comparing the total protein concentration of EBC and ELF from those two patient groups. The cytokine expression levels of EBC and saliva from asthmatic group were assessed by a cytokine protein array. Results The mean total protein concentrations in EBC, saliva and ELF were 4.6 μg/ml, 2,398 μg/ml and 14,111 μg/ml, respectively. The dilution of EBC could be estimated as 1:3000. Forty cytokines were analyzed by a cytokine protein array and each cytokine expression level of EBC was found to be different from that of saliva. Corrected by the total protein concentration, all cytokine expression levels of EBC were significantly higher than those of saliva. Conclusion These results suggest that the salivary influence on the cytokine assessment in EBC may be negligible.
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Affiliation(s)
- T. Ichikawa
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Matsunaga
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - Y. Minakata
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - S. Yanagisawa
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Ueshima
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Akamatsu
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - T. Hirano
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - M. Nakanishi
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - H. Sugiura
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - T. Yamagata
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - M. Ichinose
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
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Ichikawa T, Matsunaga K, Minakata Y, Yanagisawa S, Ueshima K, Akamatsu K, Hirano T, Nakanishi M, Sugiura H, Yamagata T, Ichinose M. Possible impact of salivary influence on cytokine analysis in exhaled breath condensate. Anal Chem Insights 2007; 2:85-92. [PMID: 19662182 PMCID: PMC2716811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Exhaled breath condensate (EBC) is thought to contain substances of the lower airway epithelial lining fluid (ELF) aerosolized by turbulent flow. However, contamination by saliva may affect the EBC when collected orally. OBJECTIVE The purpose of this study was to compare the cytokine expression levels in EBC with those in saliva, and to clarify the influence of saliva on cytokine measurements of EBC. METHODS EBC and saliva samples were obtained from 10 adult subjects with stable asthma. To estimate differences in the contents of substances between EBC and saliva, the total protein concentration of each sample was measured. Further, we also measured the total protein concentration of ELF obtained from another patient group with suspected lung cancer using a micro sampling probe during bronchoscopic examination and roughly estimated the dilution of EBC by comparing the total protein concentration of EBC and ELF from those two patient groups. The cytokine expression levels of EBC and saliva from asthmatic group were assessed by a cytokine protein array. RESULTS The mean total protein concentrations in EBC, saliva and ELF were 4.6 microg/ml, 2,398 microg/ml and 14,111 microg/ml, respectively. The dilution of EBC could be estimated as 1:3000. Forty cytokines were analyzed by a cytokine protein array and each cytokine expression level of EBC was found to be different from that of saliva. Corrected by the total protein concentration, all cytokine expression levels of EBC were significantly higher than those of saliva. CONCLUSION These results suggest that the salivary influence on the cytokine assessment in EBC may be negligible.
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Affiliation(s)
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- Correspondence: Masakazu Ichinose, M.D., Ph.D., Professor and Chairman, Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan. Tel: +81-73-441-0619; Fax: +81-73-446-2877;
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Sakurai T, Yamagata T, Uchino K, Sezutsu H, Tamura T, Kanzaki R. 2.P2. Molecular cloning and expression pattern of elav-like genes from silkmoth, Bombyx mori. Comp Biochem Physiol A Mol Integr Physiol 2007. [DOI: 10.1016/j.cbpa.2007.06.023] [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: 10/23/2022]
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Yamagata T, Sugiura H, Yokoyama T, Yanagisawa S, Ichikawa T, Ueshima K, Akamatsu K, Hirano T, Nakanishi M, Yamagata Y, Matsunaga K, Minakata Y, Ichinose M. Overexpression of CD-11b and CXCR1 on circulating neutrophils: its possible role in COPD. Chest 2007; 132:890-9. [PMID: 17573488 DOI: 10.1378/chest.07-0569] [Citation(s) in RCA: 26] [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: 11/01/2022] Open
Abstract
BACKGROUND It has been shown that the beta2-integrin molecule is up-regulated in circulating neutrophils in COPD subjects. However, little has been reported about the expression of the cell surface molecules in such patients and their relationship with pulmonary function. The aim of the present study was to investigate the surface expression of molecules in circulating neutrophils and to clarify their possible role in the airflow limitation of COPD. METHODS The surface expression of Mac-1 cells (ie, CD-11b and CD-18 cells) and CXC chemokine receptor (CXCR) 1 and CXCR2 of circulating neutrophils obtained from COPD patients and healthy subjects (HSs) was measured by flow cytometry analysis. The serum levels of interleukin (IL)-8 were measured by enzyme-linked immunosorbent assay. RESULTS Both CD-11b and CXCR1 expression were significantly higher in COPD patients than in HSs (mean [+/- SE] CD-11b concentration: HSs, 9.7 +/- 1.0; COPD patients, 14.2 +/- 1.8 [p < 0.05]; mean CXCR1 concentration: HSs, 9.6 +/- 0.5; COPD patients, 11.9 +/- 0.4 [p < 0.01]). Although aging was positively correlated with the expression of CXCR1 (r = 0.440; p < 0.01), none of the other background factors, including smoking and body mass index, showed a correlation with the expression of the molecules. Although serum IL-8 levels were higher in patients with COPD than in HSs, no significant correlation between serum IL-8 levels and the expression of any molecule was seen. The expression of CD-11b (r = -0.317) and CXCR1 (r = -0.383) showed a significant negative correlation with the severity of airflow limitation (both p < 0.05). CONCLUSIONS The overexpression of CD-11b and CXCR1 in circulating neutrophils may be associated with the development of airflow limitation in COPD patients.
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Affiliation(s)
- Toshiyuki Yamagata
- Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan
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Yamagata T, Hirano T, Sugiura H, Yanagisawa S, Ichikawa T, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Comparison of bronchodilatory properties of transdermal and inhaled long-acting beta 2-agonists. Pulm Pharmacol Ther 2007; 21:160-5. [PMID: 17632023 DOI: 10.1016/j.pupt.2007.05.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Revised: 05/16/2007] [Accepted: 05/18/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND Regular use of long-acting bronchodilators is recommended for symptomatic COPD patients. A transdermal type of beta 2-agonist, tulobuterol, was recently developed. This agent shows the pharmacokinetic property of a sustained serum concentration for 24h. However, little has been reported about the bronchodilatory properties of this agent. OBJECTIVES The aim of the present study was to compare the bronchodilatory action of transdermal beta 2-agonist tulobuterol with that of inhaled long-acting beta 2-agonist salmeterol. METHODS An open-label, randomized crossover study was performed. Eleven patients with stable COPD were enrolled in the study. Tulobuterol (2mg/day) or salmeterol (50 microg, twice daily) was administered in a randomized, crossover manner. Forced expiratory volume in 1s (FEV1), forced vital capacity (FVC) and inspiratory capacity (IC) were measured before administration, every 2h from 12 to 24h, and at 36 h after the initial administration. RESULTS Transdermal beta 2-agonist tulobuterol showed an improvement in FEV1, FVC and IC after dosing compared with those at baseline. Salmeterol also improved all parameters of FEV1, FVC and IC, and showed a greater improvement compared with the transdermal beta 2-agonist tulobuterol (p<0.05). The values of the area under the curve (AUC) of FEV1, FVC and IC during the administration of tulobuterol were 2.98+/-1.05, 1.81+/-0.98, 0.75+/-0.85 L h, respectively, and during the administration of salmeterol they were 6.39+/-1.12, 6.61+/-1.34, 4.28+/-0.91 L h, respectively. CONCLUSION The transdermal beta 2-agonist tulobuterol showed bronchodilatory action for at least 24h by once daily administration. However, its bronchodilatory potency was about three times less than that of the inhaled beta 2-agonist salmeterol.
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Affiliation(s)
- T Yamagata
- Third Department of Internal Medicine, Wakayama Medical University School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan
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