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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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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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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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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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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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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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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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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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11
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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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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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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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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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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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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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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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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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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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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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21
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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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22
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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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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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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, 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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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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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)
| | | | | | | | | | | | | | | | | | | | - M. Ichinose
- 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, 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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Arai Y, Arai H, Aoyagi A, Yamagata T, Mitani K, Kubota K, Kawamata H, Imai Y. A solid tumor of donor cell-origin after allogeneic peripheral blood stem cell transplantation. Am J Transplant 2006; 6:3042-3. [PMID: 17061988 DOI: 10.1111/j.1600-6143.2006.01581.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Hirano T, Yamagata T, Gohda M, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Inhibition of reactive nitrogen species production in COPD airways: comparison of inhaled corticosteroid and oral theophylline. Thorax 2006; 61:761-6. [PMID: 16936236 PMCID: PMC2117093 DOI: 10.1136/thx.200x.058156] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Reactive nitrogen species (RNS) are thought to be one of the important factors in the pathogenesis of chronic obstructive pulmonary disease (COPD). A study was undertaken to examine the effects of theophylline and fluticasone propionate (FP) on RNS production in subjects with COPD. METHODS Sixteen COPD subjects participated in the study. Theophylline (400 mg/day orally) or FP (400 mug/day inhalation) were administered for 4 weeks in a randomised crossover manner with a washout period of 4 weeks. Induced sputum was collected at the beginning and end of each treatment period. 3-nitrotyrosine (3-NT), which is a footprint of RNS, was quantified by high performance liquid chromatography with an electrochemical detection method as well as by immunohistochemical staining. RESULTS Theophylline significantly reduced the level of 3-NT in the sputum supernatant as well as the number of 3-NT positive cells (both p<0.01). FP also reduced 3-NT formation, but the effect was smaller than that of theophylline. Theophylline also significantly reduced the neutrophil cell counts in the sputum (p<0.01), while FP treatment had no effect on the number of inflammatory cells in the sputum, except eosinophils. CONCLUSIONS Theophylline reduces nitrative stress and neutrophil infiltration in COPD airways to a larger extent than inhaled corticosteroid.
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Affiliation(s)
- T Hirano
- Third Department of Internal Medicine, Wakayama Medical University School of Medicine, Wakayama, Japan
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Funauchi M, Shimadzu H, Tamaki C, Yamagata T, Nozaki Y, Sugiyama M, Ikoma S, Kinoshita K. Survival study by organ disorders in 306 Japanese patients with systemic lupus erythematosus: results from a single center. Rheumatol Int 2006; 27:243-9. [PMID: 16944153 DOI: 10.1007/s00296-006-0201-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2006] [Accepted: 08/06/2006] [Indexed: 10/24/2022]
Abstract
Survival rate and causes of death according to the period of diagnosis and four accompanying organ disorders were analyzed in 306 Japanese patients with systemic lupus erythematosus. The survival rate was gradually improved, and the survival rate during 5- and 10-year periods of the patients diagnosed in 1990-2004 was 94 and 92%, 20-year period of those in 1980-1989 was 77%, 30-year period of those in 1975-1979 was 71%, respectively. Survival rate of those with serositis, pulmonary hypertension, and positive family history tended to be reduced, while that of the cases with neuropsychiatric disorder and renal disorder was significantly reduced. Overlapping of these organ disorders was an important factor for a poor prognosis. Bronchopneumonia and cerebrovascular accidents were frequent causes of death, and treatment for anti-phospholipid antibody syndrome and life-style diseases such as hypertension and arteriosclerosis was thought to be important for a good outcome.
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Affiliation(s)
- M Funauchi
- Department of Nephrology and Rheumatology, Kinki University School of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka, 589-8511, Japan.
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Hirano T, Yamagata T, Gohda M, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Inhibition of reactive nitrogen species production in COPD airways: comparison of inhaled corticosteroid and oral theophylline. Thorax 2006. [DOI: 10.1136/thx.2005.058156] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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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Goko S, Utsunomiya H, Goriely S, Makinaga A, Kaihori T, Hohara S, Akimune H, Yamagata T, Lui YW, Toyokawa H, Koning AJ, Hilaire S. Partial photoneutron cross sections for the isomeric state 180Tam. Phys Rev Lett 2006; 96:192501. [PMID: 16803099 DOI: 10.1103/physrevlett.96.192501] [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: 12/20/2005] [Indexed: 05/10/2023]
Abstract
Photoneutron cross sections for (181)Ta(y, n) (180)Ta(m) were determined from simultaneous measurements of total cross sections (sigma(tot) and ground-state cross sections (sigma(gs)) for (180)Ta in photodisintegration of with laser Compton-backscattered rays. Techniques of direct neutron counting and photoactivation were used for the measurement of sigma(tot) and sigma(gs), respectively. The partial cross sections for the isomeric state serves as a novel probe of the nuclear level density of (180)Ta. Implications for the p- and s-process nucleosynthesis of (180)Ta(m) are given.
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Affiliation(s)
- S Goko
- Department of Physics, Konan University, Higashinada, Kobe, Japan
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Funauchi M, Tamaki C, Yamagata T, Nozaki Y, Sugiyama M, Ikoma S, Kinoshita K. A case of autoimmune polyglandular syndrome type III with a slowly progressive form of type-1 diabetes mellitus that manifested in the course of autoimmune diseases. Scand J Rheumatol 2006; 35:81-2. [PMID: 16467052 DOI: 10.1080/03009740510026742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yamagata T, Hoshida K, Nagata M, Mashima K, Tani K. Structure of hydrido(carboxylato)Ir(III) complexes and catalytic symmetric hydrogenation of imines. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305087155] [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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Tajiri M, Yamamoto T, Yamagata T, Nakayama H. P-925 Video-assisted thoracic surgery (VATS) for non-small cell lung cancer (NSCLC): An assessment of the long-term prognosis. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81418-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nozaki Y, Yamagata T, Yoo BS, Sugiyama M, Ikoma S, Kinoshita K, Funauchi M, Kanamaru A. The beneficial effects of treatment with all-trans-retinoic acid plus corticosteroid on autoimmune nephritis in NZB/WF mice. Clin Exp Immunol 2005; 139:74-83. [PMID: 15606616 PMCID: PMC1809273 DOI: 10.1111/j.1365-2249.2005.02654.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [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: 11/28/2022] Open
Abstract
Corticosteroids are highly effective anti-inflammatory or immunosuppressive drugs used commonly to treat human systemic lupus erythematosus (SLE). All-trans-retinoic acid (ATRA), which belongs to a class of retinoids that exert immunomodulatory and anti-inflammatory functions, can also suppress the development of lupus nephritis in an animal model. However, both agents can inflict serious adverse effects. Here, we have asked whether ATRA can serve as a steroid-sparing drug in the treatment of lupus nephritis. To examine the efficacy of combining predonisolone (PSL) with ATRA, we treated intraperitoneally New Zealand black/white F1 (NZB/W F1) mice with PSL, ATRA or both agents. Survival rate and proteinuria were determined once a month. Cytokine and anti-DNA antibody production were determined by enzyme-linked immunosorbent assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR). Renal histopathology was observed by haematoxylin and periodic acid Schiff (PAS), immunoperoxidase and immunohistochemical assay. Survival rate and proteinuria were improved in all experimental groups, and were much improved in the mice receiving the combination of ATRA and PSL (P <0.05). A single administration of ATRA reduced the Th1 [interleukin (IL)-2, interferon (IFN)-gamma and IL-12], and a Th2 (IL-4) cytokine level, as effectively as administration of PSL. ATRA also suppressed the expression of inducible nitric oxide synthetase (iNOS) and monocyte chemoattractant protein-1 (MCP-1) in the kidney. The combination of PSL and ATRA significantly reduced IgG2 (especially IgG2b)-specific anti-DNA antibody levels in comparison with administration of either agent alone. These data suggest that ATRA might have the potential to act as a new therapeutic and steroid-sparing drug against lupus nephritis.
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Affiliation(s)
- Y Nozaki
- Department of Hematology, Nephrology and Rheumatology, Kinki University School of Medicine, Osaka, Japan.
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Tajiri M, Yamamoto T, Yamagata T, Uekusa T. [New forceps for thoracoscopic needle biopsy]. Kyobu Geka 2005; 58:210-4. [PMID: 15776739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
INTRODUCTION When the diagnosis cannot be established preoperatively but malignant lung tumor is suspected, we frequently perform thoracoscopic wedge resection in order to perform rapid histodiagnosis on the specimen. If the diagnosis is malignancy, we extend the surgery to lobectomy for complete resection in many cases. However, cartridges of linear endoscopic staplers used for wedge resection are useless in such cases. This economic loss is expensive. Thoracoscopic needle biopsy is economic, but the technique is difficult and there is a risk of damage to important blood vessels when the needle penetrates deeper than is needed. Therefore, we developed forceps for thoracoscopic needle biopsy. METHOD We changed the tip shape of endoscopic grasping forceps, fixed a guide for inserting a biopsy needle and prevented the biopsy needle from going through the grasping extension for safety. We made 3 types of forceps, small, middle, and large sized forceps that could adapt the various sizes of tumors. RESULT We used the small forceps for 23 cases: the middle forceps for 13 cases; the large forceps for 7 cases; for a total of 43 cases, and succeeded in diagnosing 35 cases. The reason for failure in 6 cases using the small forceps was the exceeding softness of the lesion in 1 case, failure of rapid histodiagnosis in 1 case, and mal-adaptation between the forceps and tumor size in the remaining cases. The reason for failure in 2 cases using middle forceps was failure of rapid histodiagnosis in both cases. There was no complication due to biopsy. All bleeding after the puncture was quickly stopped. There was no dissemination or recurrence in the thoracic lumen. CONCLUSION During surgery for palpable visible lung tumors with an uncertain histological diagnosis, thoracoscopic needle biopsy is very easy and economic. It is also useful for avoiding unnecessary lung lobectomy, and is a minimally invasive method, contributing to medical economy.
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Affiliation(s)
- M Tajiri
- Department of Thoracic Surgery, Kanto Rosai Hospital, Kawasaki, Japan
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Tajiri M, Wu T, Yamagata T. [Traumatic lung cyst]. Kyobu Geka 2005; 58:113-8. [PMID: 15724472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
INTRODUCTION Traumatic lung cysts have been reported to be comparatively rare. However, we diagnosed 11 cases to have traumatic lung cyst over the past 6 years. We mainly present the most characteristic 3 cases and also discuss our findings for the 11 cases of traumatic lung cyst. CASE 1: A 17-year-old male, who was injured on his left chest after falling from a height of 7 m. He presented in a state of shock and was immediately resected the left lung because of massive bleeding from a damage of pulmonary vein. However, he finally died due to disseminated intravascular clotting (DIC). We recognized a large traumatic lung cyst, which went from the upper lobe to lower lobe thoroughly the resected lung. CASE 2 : A 19-year-old male, who was injured on his left chest in traffic accident. We recognized a wide contusion, cysts and hemorrhage in the left upper lobe on computed tomography (CT) findings. We performed an emergency left upper lobectomy because of the intrabronchial bleeding. CASE 3: An 11-year-old boy, suffered trauma on his right chest when he fell while walking. We recognized minor redness and subcutaneous emphysema in the injured are, in addition to a contusion and cyst in the right lower lobe on CT findings. He was conservatively observed, and both the cyst and contusion gradually contracted. CONCLUSION Regarding traumatic lung cysts, a quick diagnosis and timely selection of the optimal treatment are important. When a pulmonary injury is serious, then quick surgical treatment is necessary, and a close follow-up is necessary in case undergoing conservative treatment.
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Affiliation(s)
- Michihiko Tajiri
- Department of Thoracic Surgery, Kanto Rosai Hospital, Kawasaki, Japan
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Mitani K, Maki K, Yamagata T, Hirai H. O-30 Dysplastic definitive hematopoiesis in AML1/Evi-1 knock-in embryos. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80029-3] [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: 11/16/2022]
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Yamagata T, Nakamura Y, Yamagata Y, Nakanishi M, Matsunaga K, Nakanishi H, Nishimoto T, Minakata Y, Mune M, Yukawa S. The pilot trial of the prevention of the increase in electrical taste thresholds by zinc containing fluid infusion during chemotherapy to treat primary lung cancer. J Exp Clin Cancer Res 2003; 22:557-63. [PMID: 15053297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
It is well known that there are various adverse effects during chemotherapy for cancer treatment. A taste disorder is also seen in 35-70% of patients. It has been reported that a zinc deficiency is associated with the development of these alterations in taste sensation. The purpose of this pilot study was to determine whether the zinc including infusion had the effect on taste disorder in patients with lung cancer. Taste disorder was evaluated as the increase in electrical taste thresholds using an electrogustometer. The plasma zinc concentration was also measured. Although there was no significant correlation, the increase in taste thresholds was detected in many patients who had a low zinc concentration even before receiving chemotherapy. Moreover, after 2 weeks of chemotherapy, almost all patients who did not have a zinc containing infusion showed development of taste disorder (5/5, 100% at chorda tympani area; 4/5, 80% at glossopharyngeal area), whereas no development of taste disorder was observed in those patients receiving a zinc containing infusion. These results suggest the possibility that the administration of zinc during chemotherapy could be a useful supportive therapy for preventing taste disorder and to help maintain a better quality of life.
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Affiliation(s)
- T Yamagata
- Third Dept. of Internal Medicine, Division of Clinical Oncology and Palliative Medicine, Wakayama Medical University, Wakayama-City, Wakayama, Japan.
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Abstract
Hemophagocytic syndrome (HPS) is a life-threatening disorder characterized by pancytopenia and activation of macrophages. Recently, corticosteroid incorporated in lipid microspheres (liposteroid) has been reported to be taken up by macrophages and to suppress their functions. Here we present a case of systemic lupus erythematosus complicated by HPS that was successfully treated with liposteroid in addition to an oral corticosteroid and intravenous high-dose cyclophosphamide therapy. The serum levels of tumor necrosis factor-alpha and ferritin that have been reported to be associated with activity of macrophages remarkably reduced after liposteroid administration. This case suggests that liposteroid is useful for the treatment of HPS.
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Affiliation(s)
- M Funauchi
- Department of Hematology, Nephrology and Rheumatology, Kinki University School of Medicine, Osaka-Sayama, Osaka, Japan.
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