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Gunji YP, Murakami H, Niizato T, Nishiyama Y, Enomoto K, Adamatzky A, Toda M, Moriyama T, Kawai T. Robust Swarm of Soldier Crabs, Mictyris guinotae, Based on Mutual Anticipation. Swarm Intelligence 2020. [DOI: 10.1201/9780429028618-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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2
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Indianto MA, Toda M, Ono T. Development of assembled microchannel resonator as an alternative fabrication method of a microchannel resonator for mass sensing in flowing liquid. Biomicrofluidics 2020; 14:064111. [PMID: 33381251 PMCID: PMC7748827 DOI: 10.1063/5.0032040] [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: 10/06/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
We propose an alternate fabrication technique of microchannel resonators based on an assembly method of three separate parts to form a microchannel resonator on a chip. The capability of the assembled microchannel resonator to detect mass is confirmed by injecting two liquids with different densities. The experimental and theoretical values of the resonator frequency shift are in agreement with each other, which confirms the consistency of the device. The noise level of the device is estimated from the Allan variance plot, so the minimum detectable mass of 230 fg after 16 s of operation is expected. By considering the time of the practical application of 1 ms, it is found that a detectable mass of around 8.51 pg is estimated, which is applicable for detecting flowing microparticles. The sub-pico to a few picogram levels of detection will be applicable for the mass analysis of flowing microparticles such as single cells and will be greatly beneficial for many fields such as chemistry, medicine, biology, and single-cell analysis.
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3
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Okubo R, Aikawa H, Matsumoto S, Noike R, Yabe T, Nakanishi R, Amano H, Toda M, Ikeda T. Clinical usefulness of Lipoprotein(a) for the prevalence and severity of peripheral artery disease among patients with acute coronary syndrome. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Lipoprotein(a) [LP(a)] is known to be a robust lipid marker associated with cardiovascular events. Though coronary artery disease and peripheral artery disease (PAD) are often coexist, little is known about the relationship between LP(a) and PAD among patients with acute coronary syndrome (ACS).
Purpose
The purpose of this study is to examine if LP(a) is of predictive value for PAD among ACS patients in Japanese population.
Methods
Of consecutive 238 ACS patient who received successful primary PCI, a total of 175 patients were enrolled in the current study. We excluded the patients who received hemodialysis (n=10), required multidisciplinary treatment (n=36) and incomplete data (n=17). PAD was diagnosed as ankle brachial index <0.9. Multiple lipid biomarkers [LP(a), low-density lipoprotein (LDL-C), high-density lipoprotein (HDL-C), malondialdehyde-modified LDL (MDA-LDL), docosahexaenoic acid and arachidonic acid] were compared between patients with PAD (n=21) and without PAD (n=154). Further, multivariable logistic regression models were used to assess if LP(a) was associated with PAD. In addition, serum LP(a) level were compared between 3 groups according to pattern of PAD [none (n=154), unilateral (n=10) and bilateral PAD (n=11), respectively].
Results
Compared to patients without PAD, those with PAD were older (74.4 vs. 65.4 years, p=0.003), and had a higher prevalence of chronic kidney disease (CKD) (61.9% vs. 20.1%, p<0.001), diabetes mellitus (DM) (66.7% vs. 27.3%, p<0.001). Serum LP(a) level was significantly higher in patients with PAD (36.4 vs. 18.5 mg/dl, p<0.001), whereas LDL-C and MDA-LDL were significantly lower in PAD (92.0 vs. 109.5 mg/dl, p=0.015 and 98.6 vs. 119.5 mg/dl, p=0.046, respectively). After adjusting for LDL-C and MDA-LDL, LP(a) >30 mg/dl was independently associated with a presence of PAD (OR 5.67, 95% CI 2.09–15.4, p=0.0006). When adjusting for CKD and DM in a different model, LP(a) >30 mg/dl was similarly associated with PAD (OR 4.98, 95% CI 1.66–14.9, p=0.004). Serum LP(a) levels were significantly higher in bilateral PAD group compared to none PAD group (Figure).
Conclusion
LP(a) was a useful lipid biomarker for the prevalence and severity of PAD among patients with ACS in Japanese population.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- R Okubo
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Aikawa
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - S Matsumoto
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - R Noike
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Yabe
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - R Nakanishi
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Amano
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Toda
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Ikeda
- Toho University Faculty of Medicine, The Department of Cardiovascular Medicine, Tokyo, Japan
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Amano H, Noike R, Saito D, Yabe T, Watanabe I, Koizumi M, Okubo R, Toda M, Ikeda T. P5623Plaque characteristics, slow flow during percutaneous coronary intervention, and clinical outcomes of irregular protrusion by optical coherence tomography. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
In pathological studies, penetration of the lipid core into the stent strut is associated with neointimal growth and stent thrombosis. Irregular protrusion on optical coherence tomography (OCT) is associated with clinical events and target lesion revascularization. However, there are few reports about the relationship among irregular protrusion, plaque characteristics, and slow flow during percutaneous coronary intervention. We investigated clinical and procedure characteristics, plaque characteristics, slow flow after stent implantation, and clinical outcomes with irregular protrusion by using OCT.
Methods
Eighty-four lesions in 76 patients undergoing OCT before percutaneous coronary intervention were evaluated. Irregular protrusion was defined as protrusion of material with an irregular surface into the lumen between stent struts with a maximum height of ≥100 μm. Major adverse clinical outcomes were defined as death, acute myocardial infarction, acute coronary syndrome, or target lesion revascularization.
Results
Lesions with irregular protrusion were found in 56% (47/84). Compared with lesions without irregular protrusion, those with irregular protrusion had significantly higher low-density lipoprotein cholesterol (LDL-C) levels (108±31 mg/dL vs. 95±25 mg/dL, P=0.044); a tendency toward decreased use of statins (44% [19/43] vs. 67% [22/33], P=0.065); significantly larger reference vessel diameter (3.12±0.53 mm vs. 2.74±0.63 mm, P=0.004); significantly larger stent diameter (3.23±0.43 mm vs. 3.00±0.49 mm, P=0.025); a tendency toward longer total stent length (29.3±14.2 mm vs. 23.7±11.4 mm, P=0.056); significantly larger maximum balloon diameter (3.56±0.55 mm vs. 3.22±0.63 mm, P=0.010); significantly higher incidence of slow flow after stent implantation (38% [18/47] vs. 11% [4/37], P=0.006); significantly higher ΔTIMI flow from pre-stenting to post-stenting (0.4±0.6 vs. 0.1±0.3, P=0.009); significantly higher incidence of lipid-rich plaque (70% [33/47] vs. 35% [13/37], P=0.002); thin-cap fibroatheromas (TCFAs: 49% [23/47] vs. 5% [2/37], P<0.001); plaque rupture (40% [19/47] vs. 16% [6/37], P=0.018); macrophage accumulation (51% [24/47] vs. 24% [9/37], P=0.015); internal running vasa vasorum (51% [24/47] vs. 11% [4/37], P<0.001); thrombus (32% [15/47] vs. 3% [1/37], P<0.001); and a tendency higher incidence of one-year adverse clinical outcomes (12% [5/43] vs. 0% [0/33], P=0.075: log rank). The multivariable analysis showed that TCFA was an independent predictor of irregular protrusion (odds ratio 9.00, 95% CI 1.32–61.36, P=0.025).
Conclusions
Irregular protrusion on OCT was associated with high plaque vulnerability, higher LDL-C, less frequent use of statin, larger vessel diameter, longer total stent length, slow flow after stent implantation, and one-year adverse clinical outcomes.
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Affiliation(s)
- H Amano
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - R Noike
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - D Saito
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Yabe
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - I Watanabe
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Koizumi
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - R Okubo
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Toda
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Ikeda
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
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Sakai K, Inoue M, Nishimura H, Mikami S, Kuwabara Y, Kojima A, Toda M, Kobayashi Y, Kikuchi S, Hirata Y, Kyoyama H, Moriyama G, Gemma A, Uematsu K. P2.06-31 Inhibition of Heat Shock Protein 70 Function Suppresses Proliferation in Mesothelioma Cells. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1286] [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: 10/28/2022]
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Hara M, Yano Y, Kajita M, Nishino H, Ibata Y, Toda M, Hara S, Kasamatsu A, Ito H, Ono T, Ido T. Microwave oscillator using piezoelectric thin-film resonator aiming for ultraminiaturization of atomic clock. Rev Sci Instrum 2018; 89:105002. [PMID: 30399742 DOI: 10.1063/1.5048633] [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: 07/16/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
We developed a microwave oscillator and a micro electromechanical systems-based rubidium cell for the miniaturization of atomic clocks. A thin-film bulk acoustic resonator (FBAR) having a resonant frequency of the fundamental mode in the 3.5 GHz band was employed instead of a crystal resonator. It delivers a clock transition frequency of Rb atoms of 3.417 GHz without the need for a complicated frequency multiplication using a phase-locked loop. This topology considerably reduces the system scale and power consumption. For downsizing the atomic clock system toward the chip level as well as mass production, a microfabricated gas cell containing Rb and N2 gases was also developed. These microcomponents were incorporated into an atomic clock test bench, resulting in a clock operation with a short-term frequency instability of 2.1 × 10-11 at 1 s. To the best of our knowledge, this is the first report of a coherent population trapping clock operation using an FBAR-based microwave oscillator as well as a microfabricated gas cell.
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Affiliation(s)
- M Hara
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
| | - Y Yano
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
| | - M Kajita
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
| | - H Nishino
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Y Ibata
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - M Toda
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - S Hara
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
| | - A Kasamatsu
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
| | - H Ito
- Laboratory for Future Interdisciplinary Research of Science and Technology (FIRST), Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - T Ono
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - T Ido
- National Institute of Information and Communications Technology, Tokyo 184-8795, Japan
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7
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Sasaki T, Moritani T, Belay A, Capizzano AA, Sato SP, Sato Y, Kirby P, Ishitoya S, Oya A, Toda M, Takahashi K. Role of the Apparent Diffusion Coefficient as a Predictor of Tumor Progression in Patients with Chordoma. AJNR Am J Neuroradiol 2018; 39:1316-1321. [PMID: 29724767 DOI: 10.3174/ajnr.a5664] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 03/10/2018] [Indexed: 01/15/2023]
Abstract
BACKGROUND AND PURPOSE Diffusion-weighted imaging may aid in distinguishing aggressive chordoma from nonaggressive chordoma. This study explores the prognostic role of the apparent diffusion coefficient in chordomas. MATERIALS AND METHODS Sixteen patients with residual or recurrent chordoma were divided postoperatively into those with an aggressive tumor, defined as a growing tumor having a doubling time of <1 year, and those with a nonaggressive tumor on follow-up MR images. The ability of the ADC to predict an aggressive tumor phenotype was investigated by receiver operating characteristic analysis. The prognostic role of ADC was assessed using a Kaplan-Meier curve with a log-rank test. RESULTS Seven patients died during a median follow-up of 48 months (range, 4-126 months). Five of these 7 patients were in the aggressive tumor group, and 2 were in the nonaggressive tumor group. The mean ADC was significantly lower in the aggressive tumor group than in the nonaggressive tumor group (P = .002). Receiver operating characteristic analysis showed that a cutoff ADC value of 1.494 × 10-3 × mm2/s could be used to diagnose aggressive tumors with an area under the curve of 0.983 (95% CI, 0.911-1.000), a sensitivity of 1.000 (95% CI, 0.541-1.000), and a specificity of 0.900 (95% CI, 0.555-0.998). Furthermore, a cutoff ADC of ≤1.494 × 10-3 × mm2/s was associated with a significantly worse prognosis (P = .006). CONCLUSIONS Lower ADC values could predict tumor progression in postoperative chordomas.
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Affiliation(s)
- T Sasaki
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
- Asahikawa Medical University (T.S., S.I., A.O., M.T., K.T.), Asahikawa, Hokkaido, Japan
| | - T Moritani
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
- Department of Radiology (T.M.), University of Michigan, Ann Arbor, Michigan
| | - A Belay
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
| | - A A Capizzano
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
| | - S P Sato
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
| | - Y Sato
- From the Departments of Radiology (T.S., T.M., A.B., A.A.C., S.P.S., Y.S.)
| | - P Kirby
- Pathology (P.K.), University of Iowa, Iowa City, Iowa
| | - S Ishitoya
- Asahikawa Medical University (T.S., S.I., A.O., M.T., K.T.), Asahikawa, Hokkaido, Japan
| | - A Oya
- Asahikawa Medical University (T.S., S.I., A.O., M.T., K.T.), Asahikawa, Hokkaido, Japan
| | - M Toda
- Asahikawa Medical University (T.S., S.I., A.O., M.T., K.T.), Asahikawa, Hokkaido, Japan
| | - K Takahashi
- Asahikawa Medical University (T.S., S.I., A.O., M.T., K.T.), Asahikawa, Hokkaido, Japan
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8
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Affiliation(s)
- S Scheurer
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany.
| | - M Toda
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
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9
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Hara K, Izumi N, Tsukioka T, Chung K, Komatsu H, Toda M, Miyamoto H, Kimura T, Suzuki S, Yoshida A, Higashiyama S, Kawabe J, Nishiyama N. P3.16-032 Prediction of Postoperative Lung Function in Patients with Lung Cancer by Lung Lobe. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1838] [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: 10/18/2022]
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10
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Tsukioka T, Izumi N, Chung K, Komatsu H, Toda M, Hara K, Miyamoto H, Nishiyama N. PUB062 Sarcopenia Is a Novel Predictor of Poor Prognosis in Male Patients with Pathological Stage I Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1925] [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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11
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Nishiyama N, Izumi N, Tsukioka T, Tei K, Komatsu H, Toda M, Hara K, Miyamoto H. P2.16-003 Diagnostic Lobectomy for Indeterminate Pulmonary Tumor. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Amano H, Saito D, Yabe T, Watanabe I, Koizumi M, Okubo R, Toda M, Ikeda T. P2332Association between internal running vasa vasorum in optical coherence tomography and slow flow during percutaneous coronary intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2332] [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: 11/14/2022] Open
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13
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Okubo R, Toda M, Nakanishi R, Amano H, Saitou D, Ikeda T. P499Usefulness of the SYNTAX Score II in predicting adverse cardiovascular outcomes compared to the SYNTAX Score among patients undergoing percutaneous coronary intervention for chronic total occlusion. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p499] [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: 11/14/2022] Open
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14
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Kim SW, Hasegawa T, Muto M, Toda A, Kaneko T, Sugimoto K, Uematsu K, Ishigaki T, Toda K, Sato M, Koide J, Toda M, Kudo Y. Improvement of luminescence properties of rubidium vanadate, RbVO3, phosphors by erbium doping in the crystal lattice. NEW J CHEM 2017. [DOI: 10.1039/c6nj03823a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermal quenching effect of RbVO3 phosphor was effectively improved by Er3+ doping into the lattice, as a result, the emission intensity of the phosphor was successfully enhanced.
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15
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Morita T, Toda M, Inoue K. Is necessary mouse carcinogenicity study for safety assessment of pesticide? Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Urawa M, Kobayashi T, D'Alessandro-Gabazza CN, Fujimoto H, Toda M, Roeen Z, Hinneh JA, Yasuma T, Takei Y, Taguchi O, Gabazza EC. Protein S is protective in pulmonary fibrosis. J Thromb Haemost 2016; 14:1588-99. [PMID: 27172994 DOI: 10.1111/jth.13362] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Indexed: 01/10/2023]
Abstract
UNLABELLED Essentials Epithelial cell apoptosis is critical in the pathogenesis of idiopathic pulmonary fibrosis. Protein S, a circulating anticoagulant, inhibited apoptosis of lung epithelial cells. Overexpression of protein S in lung cells reduced bleomycin-induced pulmonary fibrosis. Intranasal therapy with exogenous protein S ameliorated bleomycin-induced pulmonary fibrosis. SUMMARY Background Pulmonary fibrosis is the terminal stage of interstitial lung diseases, some of them being incurable and of unknown etiology. Apoptosis plays a critical role in lung fibrogenesis. Protein S is a plasma anticoagulant with potent antiapoptotic activity. The role of protein S in pulmonary fibrosis is unknown. Objectives To evaluate the clinical relevance of protein S and its protective role in pulmonary fibrosis. Methods and Results The circulating level of protein S was measured in patients with pulmonary fibrosis and controls by the use of enzyme immunoassays. Pulmonary fibrosis was induced with bleomycin in transgenic mice overexpressing human protein S and wild-type mice, and exogenous protein S or vehicle was administered to wild-type mice; fibrosis was then compared in both models. Patients with pulmonary fibrosis had reduced circulating levels of protein S as compared with controls. Inflammatory changes, the levels of profibrotic cytokines, fibrosis score, hydroxyproline content in the lungs and oxygen desaturation were significantly reduced in protein S-transgenic mice as compared with wild-type mice. Wild-type mice treated with exogenous protein S showed significant decreases in the levels of inflammatory and profibrotic markers and fibrosis in the lungs as compared with untreated control mice. After bleomycin infusion, mice overexpressing human protein S showed significantly low caspase-3 activity, enhanced expression of antiapoptotic molecules and enhanced Akt and Axl kinase phosphorylation as compared with wild-type counterparts. Protein S also inhibited apoptosis of alveolar epithelial cells in vitro. Conclusions These observations suggest clinical relevance and a protective role of protein S in pulmonary fibrosis.
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Affiliation(s)
- M Urawa
- Department of Pulmonary and Critical Care Medicine, Tsu, Mie, Japan
- Department of Immunology, Tsu, Mie, Japan
| | - T Kobayashi
- Department of Pulmonary and Critical Care Medicine, Tsu, Mie, Japan
| | | | - H Fujimoto
- Department of Pulmonary and Critical Care Medicine, Tsu, Mie, Japan
| | - M Toda
- Department of Immunology, Tsu, Mie, Japan
| | - Z Roeen
- Department of Immunology, Tsu, Mie, Japan
| | - J A Hinneh
- Department of Immunology, Tsu, Mie, Japan
| | - T Yasuma
- Department of Immunology, Tsu, Mie, Japan
| | - Y Takei
- Department of Pulmonary and Critical Care Medicine, Tsu, Mie, Japan
- Department of Gastroenterology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - O Taguchi
- Department of Pulmonary and Critical Care Medicine, Tsu, Mie, Japan
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Toda M, Sakaguchi Y, Morimoto K. Correlation between Serum IgE and Salivary Cortisol Levels in Subjects with Type I Allergic Disorders. Int J Immunopathol Pharmacol 2016; 20:203-5. [PMID: 17346446 DOI: 10.1177/039463200702000125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study compares the relationship between serum IgE and salivary Cortisol levels in 42 normal and in 18 type I allergic subjects. Levels of serum total IgE and salivary Cortisol were determined with the UniCAP system and ELISA respectively. In the type I allergic subjects, there was a significant correlation between serum IgE and salivary Cortisol levels ( p < 0.01). In the normal subjects, on the other hand, no correlation was found. These findings suggest that there may be an association between stress and allergic disorders.
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18
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Toda M, Njeru I, Zurovac D, O-Tipo S, Kareko D, Mwau M, Morita K. The impact of a SMS-based disease outbreak alert system (mSOS) in Kenya. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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19
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Siebeneicher S, Reuter S, Wangorsch A, Krause M, Foetisch K, Heinz A, Naito S, Reuter A, Taube C, Vieths S, Scheurer S, Toda M. Epicutaneous immunotherapy with a hypoallergenic Bet v 1 suppresses allergic asthma in a murine model. Allergy 2015; 70:1559-68. [PMID: 26304061 DOI: 10.1111/all.12732] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND Due to reduced allergic potency, hypoallergenic variants have been suggested as safer and potentially more efficacious alternative to the corresponding wild-type allergens in allergen-specific immunotherapy. Here, we aimed at investigating the efficacy of recombinant Bet v 1B2, a hypoallergenic folding variant of Bet v 1, in epicutaneous immunotherapy to suppress asthmatic features using a murine model of birch pollen allergy. METHODS AND RESULTS Before, or after sensitization with rBet v 1 plus ALUMW and intranasal challenges with birch pollen extract, BALB/c mice received epicutaneous immunization (EPI) with rBet v 1, or rBet v 1B2 on their depilated back. Prophylactic EPI with rBet v 1B2, but not with rBet v 1, suppressed serum levels of Bet v 1-specific IgE antibodies and reduced the number of eosinophils and the concentrations of Th2 cytokines in bronchoalveolar lavage. In an established allergic condition, serum levels of Bet v 1-specific IgE antibodies were similar between PBS-treated control mice and EPI-treated mice. However, therapeutic EPI with rBet v 1B2, but not with rBet v 1, significantly suppressed the development of airway inflammation and lung function impairment. CONCLUSION This study is the first to show the effect of therapeutic EPI with a recombinant form of a hypoallergenic folding variant on the suppression of asthmatic features. Our results suggest that rBet v 1B2 along with its reduced IgE-binding capacity could be a preferred therapeutic allergen than wild-type rBet v 1 in epicutaneous immunotherapy of birch pollen-induced allergic asthma, in particular due to a lower risk of allergic side effect.
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Affiliation(s)
- S. Siebeneicher
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
| | - S. Reuter
- The III Medical Department; University Medical Centre; Mainz Germany
- Experimental Asthma Research; Research Center Borstel; Leibniz-Center for Medicine and Biosciences; Borstel Germany
| | - A. Wangorsch
- Vice President's Research Group ‘Molecular Allergology’; Paul-Ehrlich-Institut; Langen Germany
| | - M. Krause
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
- Vice President's Research Group ‘Molecular Allergology’; Paul-Ehrlich-Institut; Langen Germany
| | - K. Foetisch
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - A. Heinz
- The III Medical Department; University Medical Centre; Mainz Germany
| | - S. Naito
- Department of Quality Assurance and Radiological Protection; The National Institute of Infectious Diseases; Tokyo Japan
| | - A. Reuter
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - C. Taube
- Department of Pulmonology; Leiden University Medical Center; Leiden the Netherlands
| | - S. Vieths
- Vice President's Research Group ‘Molecular Allergology’; Paul-Ehrlich-Institut; Langen Germany
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - S. Scheurer
- Vice President's Research Group ‘Molecular Allergology’; Paul-Ehrlich-Institut; Langen Germany
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - M. Toda
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
- Vice President's Research Group ‘Molecular Allergology’; Paul-Ehrlich-Institut; Langen Germany
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Affiliation(s)
- S. Scheurer
- Molecular Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - M. Toda
- Molecular Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - S. Vieths
- Molecular Allergology; Paul-Ehrlich-Institut; Langen Germany
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21
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Chelakkot-Govindalayathil AL, Mifuji-Moroka R, D'Alessandro-Gabazza CN, Toda M, Matsuda Y, Gil-Bernabe P, Roeen Z, Yasuma T, Yano Y, Gabazza EC, Iwasa M, Takei Y. Protein S exacerbates alcoholic hepatitis by stimulating liver natural killer T cells. J Thromb Haemost 2015; 13:142-54. [PMID: 25399514 DOI: 10.1111/jth.12789] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/05/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND Alcohol consumption is a major cause of liver injury but the mechanisms are not completely understood. Protein S (PS) is an anticoagulant glycoprotein with multiple functions. The role of PS in liver injury is unknown. OBJECTIVES This study investigated the role of PS in acute alcoholic hepatitis. METHODS A mouse overexpressing human PS (hPS-TG) was generated in which acute hepatitis was induced by intraperitoneal injection of ethanol. RESULTS The levels of serum liver enzymes and liver tissue inflammatory cytokines and the degree of hepatic steatosis were significantly increased in hPS-TG mice treated with ethanol compared with ethanol-treated wild type (WT) mice. Cell expansion, activation and inhibition of apoptosis were significantly augmented in natural killer T (NKT) cells from hPS-TG mice compared with WT mice. Liver mononuclear cells from hPS-TG mice express higher levels of inflammatory cytokines than those from WT mice after stimulation with a specific stimulant of NKT cells in vitro. In a co-culture system of hepatocytes and NKT cells, the effects of PS on ethanol-mediated cell injury were suppressed by a CD1d neutralizing antibody. Alcoholic liver injury was significantly improved in mice pre-treated with PS siRNA and anti-protein S antibody compared with control mice. Patients with alcoholic hepatitis showed significantly increased plasma PS levels and enhanced liver expression of PS and CD1d compared with controls. CONCLUSIONS The results of this study suggest that PS exacerbates acute alcoholic hepatitis by inhibiting apoptosis of activated NKT cells.
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MESH Headings
- Animals
- Antibodies, Neutralizing/pharmacology
- Antigens, CD1d/immunology
- Antigens, CD1d/metabolism
- Apoptosis
- Blood Proteins/genetics
- Blood Proteins/metabolism
- Case-Control Studies
- Cells, Cultured
- Coculture Techniques
- Disease Models, Animal
- Ethanol
- Fatty Liver, Alcoholic/immunology
- Fatty Liver, Alcoholic/metabolism
- Fatty Liver, Alcoholic/pathology
- Hepatitis, Alcoholic/genetics
- Hepatitis, Alcoholic/immunology
- Hepatitis, Alcoholic/metabolism
- Hepatitis, Alcoholic/pathology
- Hepatitis, Alcoholic/prevention & control
- Hepatocytes/immunology
- Hepatocytes/metabolism
- Hepatocytes/pathology
- Humans
- Inflammation Mediators/immunology
- Inflammation Mediators/metabolism
- Liver/immunology
- Liver/metabolism
- Liver/pathology
- Lymphocyte Activation
- Male
- Mice, Inbred C57BL
- Mice, Transgenic
- Natural Killer T-Cells/immunology
- Natural Killer T-Cells/metabolism
- Protein S/genetics
- Protein S/metabolism
- RNAi Therapeutics
- Severity of Illness Index
- Signal Transduction
- Up-Regulation
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22
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Arai M, Ito S, Kosaka Y, Toda M, Kuroiwa M, Okamoto H. 0597. The relation between intestinal intramucosal ph and stress hormones in pig hemorrhagic shock model. Intensive Care Med Exp 2014. [PMCID: PMC4798586 DOI: 10.1186/2197-425x-2-s1-p40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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23
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Sasaki H, Hirose Y, Yazaki T, Kimura T, Fujiwara H, Kitamura Y, Katayama M, Toda M, Ohira T, Yoshida K. MOLECULAR-GUIDED NEOADJUVANT APPROACH FOR CHEMOSENSITIVE GLIOMAS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou209.32] [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: 11/14/2022] Open
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24
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Hamid BR, Tomio R, Toda M, Schick U, Kawase T, Yoshida K. The Safety of Kawase Triangle as an Anatomical Landmark for Anterior Petrosectomy in Petroclival Meningiomas. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Ichimura S, Yoshida K, Orii M, Kagami H, Inaba M, Toda M. Epidural Anterior Petrosectomy with Subdural Visualization of Sphenobasal Vein via the Anterior Transpetrosal Approach. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Borghei-Razavi H, Tomio R, Toda M, Schick U, Kawase T, Yoshida K. Tumor-Induced Surgical Anatomical Variations of Cranial Nerves in Anterior Petrosectomy for Petroclival Tumors. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Shibao S, Toda M, Horiguchi T, Yohida K. Venous Preservation in the Anterior Transpetrosal Approach. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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28
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Kishimoto H, Nishiyama S, Yoshinaga Y, Aita T, Ohashi K, Miyawaki S, Miyoshi S, Yoshihara Y, Toda M, Tsuno M. SAT0470 Matrix Metalloproteinase-3 (MMP-3) Correlates with Low Bone Mineral Density (BMD) at the Lumbar Spine, but not at the Femoral Neck in Patients with Systematic Lupus Erythematosus (SLE). Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2923] [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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29
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Muto J, Prevedello D, Fiho L, Kerr E, Jamshidi A, Toda M, Kawase T, Yoshida K. Comprehensive Approach to Meckel's Cave. J Neurol Surg A Cent Eur Neurosurg 2014. [DOI: 10.1055/s-0034-1382196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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30
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Siebeneicher S, Reuter S, Krause M, Wangorsch A, Maxeiner J, Wolfheimer S, Schülke S, Naito S, Heinz A, Taube C, Vieths S, Scheurer S, Toda M. Epicutaneous immune modulation with Bet v 1 plus R848 suppresses allergic asthma in a murine model. Allergy 2014; 69:328-37. [PMID: 24329861 DOI: 10.1111/all.12326] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [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: 10/20/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Combining allergen(s) with an adjuvant is a strategy to improve the efficacy and safety of allergen-specific immunotherapy. Here, we aimed at investigating the adjuvant effects of polyadenylic-polyuridylic acid (poly(A:U)), a TLR3 agonist, and R848 (resiquimod), a TLR7 agonist, in epicutaneous immunotherapy with Bet v 1, the major birch pollen allergen, to intervene in birch pollen allergy. METHODS AND RESULTS BALB/c mice received epicutaneous immunization (EPI) with recombinant Bet v 1 (rBet v 1) alone, or plus poly(A:U), or R848 on their depilated back using patches. Among the groups, EPI with rBet v 1 and R848 induced detectable levels of IFN-γ-producing CD4(+) T cells in lymph nodes and Bet v 1-specific IgG2a antibodies in the sera of mice. Before or after EPI, mice were sensitized with rBet v 1 plus aluminium hydroxide adjuvant and intranasally challenged with birch pollen extract. Prophylactic EPI with rBet v 1 plus R848 inhibited the production of biologically active Bet v 1-specific IgE antibodies in sensitization. Prophylactic and therapeutic EPI with rBet v 1 plus R848 suppressed lung inflammation upon challenges. Remarkably, only rBet v 1 plus R848 reduced the development of enhanced pause (PenH), a substituted parameter for airway hyper-reactivity, in challenged mice. In contrast to R848, poly(A:U) did not present adjuvant effect on the suppression of asthmatic features. CONCLUSION Epicutaneous immunization with rBet v 1 plus R848 induced predominant Bet v 1-specific Th1 responses and efficiently suppressed asthmatic features elicited by birch pollen. R848 could be a promising adjuvant in epicutaneous immunotherapy for birch pollen-induced allergic asthma.
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Affiliation(s)
- S. Siebeneicher
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
| | - S. Reuter
- The III Medical Department; University Hospital Mainz; Mainz Germany
| | - M. Krause
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
| | - A. Wangorsch
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - J. Maxeiner
- The III Medical Department; University Hospital Mainz; Mainz Germany
- Asthma Core Facility; The Research Centre Immunology (FZI); University Hospital Mainz; Mainz Germany
| | - S. Wolfheimer
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - S. Schülke
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - S. Naito
- Division of Quality Assurance; The National Institute of Infectious Diseases; Tokyo Japan
| | - A. Heinz
- The III Medical Department; University Hospital Mainz; Mainz Germany
| | - C. Taube
- Department of Pulmonology; Leiden University Medical Center; Leiden the Netherlands
| | - S. Vieths
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - S. Scheurer
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - M. Toda
- Junior Research Group 1 ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen Germany
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31
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Miyake Y, D'Alessandro-Gabazza CN, Takagi T, Naito M, Hataji O, Nakahara H, Yuda H, Fujimoto H, Kobayashi H, Yasuma T, Toda M, Kobayashi T, Yano Y, Morser J, Taguchi O, Gabazza EC. Dose-dependent differential effects of thrombin in allergic bronchial asthma. J Thromb Haemost 2013; 11:1903-15. [PMID: 23964923 DOI: 10.1111/jth.12392] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 08/04/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Apart from its role in the coagulation system, thrombin plays an important role in the inflammatory response through its protease-activated receptors (PARs). However, the role of thrombin in the immune response is not clear. OBJECTIVE To evaluate whether thrombin has a modulatory role in allergic bronchial asthma. METHODS Bronchial asthma was induced in mice by intraperitoneal sensitization and inhalation challenge with ovalbumin. Thrombin or its inhibitors were administered by inhalation before each allergen challenge. RESULTS Mice with low but sustained coagulation activation had reduced allergic inflammation, and allergic asthma was inhibited by low doses of thrombin but worsened by high doses. Allergic asthma was worsened by antithrombin, argatroban, hirudin, and anti-thrombomodulin antibody. Mice with a higher level of an inhibitor of both thrombin and activated protein C had worse disease. Heterozygous PAR-1 mice had less allergic inflammation, but PAR-1 agonist worsened it. Allergic bronchial inflammation was worsened in mice that received adoptive transfer of PAR-1 agonist-treated Th2 cells as compared with controls. Low levels of thrombin suppressed the maturation and secretion of cytokines in dendritic cells, but high levels enhanced this. CONCLUSIONS The effects of thrombin on allergic asthma are dose-dependent, with detrimental effects at high doses and protective effects at low doses. These data demonstrate that thrombin modulates the outcome in allergic bronchial asthma.
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Affiliation(s)
- Y Miyake
- Department of Immunology, Mie University Graduate School of Medicine, Tsu, Japan
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Bohnen C, Wangorsch A, Schülke S, Nakajima-Adachi H, Hachimura S, Burggraf M, Süzer Y, Schwantes A, Sutter G, Waibler Z, Reese G, Toda M, Scheurer S, Vieths S. Vaccination with recombinant modified vaccinia virus Ankara prevents the onset of intestinal allergy in mice. Allergy 2013; 68:1021-8. [PMID: 23909913 DOI: 10.1111/all.12192] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 04/24/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND Modified vaccinia virus Ankara (MVA)-encoding antigens are considered as safe vaccine candidates for various infectious diseases in humans. Here, we investigated the immune-modulating properties of MVA-encoding ovalbumin (MVA-OVA) on the allergen-specific immune response. METHODS The immune-modulating properties of MVA-OVA were investigated using GM-CSF-differentiated BMDCs from C57BL/6 mice. OVA expression upon MVA-OVA infection of BMDCs was monitored. Activation and maturation markers on viable MVA-OVA-infected mDCs were analyzed by flow cytometry. Secretion of INF-γ, IL-2, and IL-10 was determined in a co-culture of BMDCs infected with wtMVA or MVA-OVA and OVA-specific OT-I CD8(+) and OT-II CD4(+ ) T cells. BALB/c mice were vaccinated with wtMVA, MVA-OVA, or PBS, sensitized to OVA/alum and challenged with a diet containing chicken egg white. OVA-specific IgE, IgG1, and IgG2a and cytokine secretion from mesenteric lymph node (MLN) cells were analyzed. Body weight, body temperature, food uptake, intestinal inflammation, and health condition of mice were monitored. RESULTS Infection with wtMVA and MVA-OVA induced comparable activation of mDCs. MVA-OVA-infected BMDCs expressed OVA and induced enhanced IFN-γ and IL-2 secretion from OVA-specific CD8(+ ) T cells in comparison with OVA, wtMVA, or OVA plus wtMVA. Prophylactic vaccination with MVA-OVA significantly repressed OVA-specific IgE, whereas OVA-specific IgG2a was induced. MVA-OVA vaccination suppressed TH 2 cytokine production in MLN cells and prevented the onset of allergic symptoms and inflammation in a mouse model of OVA-induced intestinal allergy. CONCLUSION Modified vaccinia virus Ankara-ovalbumin (MVA-OVA) vaccination induces a strong OVA-specific TH 1- immune response, likely mediated by the induction of IFN-γ and IgG2a. Finally, MVA-based vaccines need to be evaluated for their therapeutic potential in established allergy models.
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Affiliation(s)
- C. Bohnen
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
| | - A. Wangorsch
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
| | - S. Schülke
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
| | - H. Nakajima-Adachi
- Research Center for Food Safety; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo; Japan
| | - S. Hachimura
- Research Center for Food Safety; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo; Japan
| | - M. Burggraf
- Junior Research Group ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen; Germany
| | - Y. Süzer
- President's Research Group ‘Recombinant Measles Virus and Vaccines’; Paul-Ehrlich-Institut; Langen; Germany
| | - A. Schwantes
- President's Research Group ‘Recombinant Measles Virus and Vaccines’; Paul-Ehrlich-Institut; Langen; Germany
| | - G. Sutter
- Institute for Infectious Diseases and Zoonoses; Ludwig-Maximilians-Universität; München; Germany
| | - Z. Waibler
- Junior Research Group ‘Novel vaccination strategies and early immune responses’; Paul-Ehrlich-Institut; Langen; Germany
| | - G. Reese
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
| | - M. Toda
- Junior Research Group ‘Experimental Allergy Models’; Paul-Ehrlich-Institut; Langen; Germany
| | - S. Scheurer
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
| | - S. Vieths
- Division of Allergology; Paul-Ehrlich-Institut; Langen; Germany
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Abe Y, Komatsubara M, Saito M, Toda M, Shinozaki H, Tamura T, Kasahara Y, Sedakata H, Minegishi T. Activin A is stimulated by tumor necrosis factor-alpha and modulates collagen gene expression in human amniotic cells. J Endocrinol Invest 2013; 36:515-20. [PMID: 23385491 DOI: 10.3275/8816] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Accumulating evidence supports the idea of activin A as a modulator of inflammation. In human pregnancy, elevated activin A concentrations in amniotic fluid are reported in women with intra-amniotic infection and inflammation- induced pre-term birth. AIM To test the hypothesis that activin A was involved in the pathophysiology of amnionitis, we evaluated the effects of tumor necrosis factor-α and lipopolysaccharide on activin A production in human amniotic epithelial cells, and the effects of activin A on the expression of collagen mRNA in amniotic mesenchymal cells. MATERIALS AND METHODS Amniotic membranes were obtained from patients without systemic disease, signs of premature delivery or fetal complications, during elective cesarean sections at term. Amniotic epithelial cells and mesenchymal cells were separately obtained by enzymatic digestion and cultured. Activin A was measured by enzyme-linked immunosorbent assay and collagen mRNA levels were assessed by quantitative PCR. RESULTS Amniotic epithelial cells produced activin A in a cell density- and time-dependent manner. Tumor necrosis factor- α enhanced activin A production in a time-dependent (48-120 h) and dose-dependent (10-300 ng/ml) manner in amniotic epithelial cells. Lipopolysaccharide also stimulated activin A production, but the effect was less prominent. In amniotic mesenchymal cells, the effect of activin A on the expression of type I and type III collagen mRNA was suppressive. CONCLUSIONS Tumor necrosis factor-α and lipopolysaccharide stimulated activin A production in amniotic epithelial cells, and activin A modulated expression of collagen mRNA in amniotic mesenchymal cells. These results support the idea that activin A is involved in the pathophysiology of amnionitis.
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Affiliation(s)
- Y Abe
- Department of Laboratory Sciences, Graduate School of Health Sciences, Gunma University, 3-39-22 Showa, Maebashi, Gunma 371-8514, Japan.
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Iwata T, Chung K, Toda M, Hiraoka A, Hagiwara H, Hanada S, Yokota T, Inoue K, Miura T. Malignant esophagobronchial fistula with severe esophageal stenosis, successfully treated by transbronchial occlusion with cyanoacrylate glue. Endoscopy 2013; 44 Suppl 2 UCTN:E317-8. [PMID: 23011999 DOI: 10.1055/s-0032-1309849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- T Iwata
- Department of Thoracic and Cardiovascular Surgery, Kansai Rosai Hospital, Japan.
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35
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Soma H, Murai N, Tanaka K, Oguro T, Kokuba H, Yoshihama I, Fujita K, Mineo S, Toda M, Uchida S, Mogoe T. Review: Exploration of placentation from human beings to ocean-living species. Placenta 2013; 34 Suppl:S17-23. [PMID: 23332416 DOI: 10.1016/j.placenta.2012.11.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 11/17/2012] [Accepted: 11/21/2012] [Indexed: 10/27/2022]
Abstract
This review covers four topics. 1) Placental pathology in Himalayan mountain people. To determine morphological changes of the placenta at high altitude, pathological examination was made of 1000 Himalayan placentas obtained in Nepal and Tibet and the results compared with Japanese placentas delivered at sea level. Characteristic findings in the placental villi of the Himalayan group included high incidences of villous chorangiosis and chorangioma. These processes were clarified by ultrastructural observation. 2) Placentation in Sirenians. The giant Takikawa sea cow, which lived 5 million years ago, was discovered on Hokkaido, Japan. It was an ancestor of the dugong as well as the manatees. Sirenia, the sea cow group, shares a common ancestor with Proboscidea, the elephants, even though they now inhabit quite different environments. A comparison was made of their zonary endothelial type of placentation. 3) Placentation in sharks and rays. The remarkable placentation of hammerhead sharks and manta rays is described. 4) Placentation in the Antarctic minke whale. Placental tissue samples of this whale were obtained from the Japan Institute of Cetacean Research. In an ultrastructural study of the utero-placental junction, microfilamental processes of the allantochorionic zone and crypt formation were visualized.
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Affiliation(s)
- H Soma
- Department of Obstetrics & Gynecology,Saitama Medical School, Japan.
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Bohnen C, Wangorsch A, Schülke S, Burggraf M, Suezer Y, Schwantes A, Sutter G, Waibler Z, Reese G, Toda M, Scheurer S, Vieths S. Vaccination with recombinant modified vaccinia virus Ankara prevents the onset of intestinal allergy in mice. Clin Transl Allergy 2013. [PMCID: PMC3723519 DOI: 10.1186/2045-7022-3-s3-o24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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37
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Toda M, Morimoto K, Nakamura S, Umeda T, Nakaji S, Sugawara K. The unique correlation between anti-mutagenicity of human saliva and change in body weight. Environ Health Prev Med 2012; 6:82-7. [PMID: 21432241 DOI: 10.1007/bf02897950] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2000] [Accepted: 01/06/2001] [Indexed: 11/30/2022] Open
Abstract
The purpose of this study was to investigate the effect of weight reduction on the anti-mutagenicity of human saliva. Subjects were 16 male college judo players. The anti-mutagenicity of the saliva was measured using the umu test. There was an inhibiting effect of the saliva on the mutagenicity of AF-2. However, a modifying effect of the saliva on Trp-P-1 was not observed. On the day before a competition and 7 days after the competition, the inhibiting capacity of the saliva for the mutagenicity of AF-2 decreased and increased in two non-weight reduction and two weight reduction groups, respectively.However, on the day before the competition, the changed body weights (r=-0.77, p<0.01) and BMI (r=-0.77, p<0.01) were significantly correlated with that of the inhibiting capacity of the saliva for the mutagenicity of AF-2. In addition, the BMI at 20 days before the competition was not significantly but markedly correlated with it (r=0.50, p=0.057). At 7 days after the competition, however, these correlations were not found.These findings suggest a unique correlation between the anti-mutagenicity of human saliva and body weight or BMI.
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Affiliation(s)
- M Toda
- Department of Social and Environmental Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-Oka, 565-0871, Suita, Osaka, Japan
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Toda M, Matsui M, Nishida M, Ota H. Genetic Divergence among Southeast and East Asian Populations of Rana limnocharis (Amphibia: Anura), with Special Reference to Sympatric Cryptic Species in Java. Zoolog Sci 2012; 15:607-13. [PMID: 18462044 DOI: 10.2108/0289-0003(1998)15[607:gdasae]2.0.co;2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/1998] [Accepted: 04/10/1998] [Indexed: 11/17/2022]
Abstract
An electrophoretic survey was conducted for the Southeast and East Asian populations of Rana limnocharis. Results indicated that specimens from a single locality in Java derived from two genodemes showing complete allelic displacement at eight out of 25 presumptive loci examined. Within each of these genodemes, genotype frequencies at all polymorphic loci were well concordant with the Hardy-Weinberg expectation. These results strongly suggest that those specimens actually represent two biological species. Comprehensive distance analyses suggested that one of the two species from Java is genetically most divergent among all samples examined, whereas the other is most similar to the Laos sample and then to a group consisting of samples from Hongkong, western China, and the southern Ryukyus. Large values of genetic distances obtained for each combination of allopatric samples imply the presence of additional cryptic species in this nominal species.
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Gil-Bernabe P, D'Alessandro-Gabazza CN, Toda M, Boveda Ruiz D, Miyake Y, Suzuki T, Onishi Y, Morser J, Gabazza EC, Takei Y, Yano Y. Exogenous activated protein C inhibits the progression of diabetic nephropathy. J Thromb Haemost 2012; 10:337-46. [PMID: 22236035 DOI: 10.1111/j.1538-7836.2012.04621.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Activated protein C (APC) can regulate immune and inflammatory responses and apoptosis. Protein C transgenic mice develop less diabetic nephropathy but whether exogenous administration of APC suppresses established diabetic nephropathy is unknown. OBJECTIVES We investigated the therapeutic potential of APC in mice with streptozotocin-induced diabetic nephropathy. METHODS Diabetes was induced in unilaterally nephrectomized C57/Bl6 mice using intraperitoneal (i.p.) injection of streptozotocin. Four weeks later, the mice were treated with i.p. exogenous APC every other day for 1 month. RESULTS APC-treated mice had a significantly improved blood nitrogen urea-to-creatinine ratio, urine total protein to creatinine ratio and proteinuria, and had significantly less renal fibrosis as measured by the levels of collagen and hydroxyproline. The renal tissue concentration of monocyte chemoattractant protein-1 (MCP-1), vascular endothelial growth factor (VEGF) and the RNA expression of platelet-derived growth factor (PDGF), transforming growth factor-β1 and connective tissue growth factor (CTGF) were significantly lower in APC-treated mice than in untreated animals. The percentage of apoptotic cells was reduced and the expression of podocin, nephrin and WT-1 in the glomeruli was significantly improved in mice treated with APC compared with untreated mice. The levels of coagulation markers were not affected by APC treatment. CONCLUSION Exogenous APC improves renal function and mitigates pathological changes in mice with diabetic nephropathy by suppressing the expression of fibrogenic cytokines, growth factors and apoptosis, suggesting its potential usefulness for the therapy of this disease.
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Affiliation(s)
- P Gil-Bernabe
- Department of Diabetes and Metabolism, Mie University Graduate School of Medicine, Tsu City, Mie Prefecture, Japan
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Uchida K, Adachi H, An T, Ota T, Toda M, Hillebrands B, Maekawa S, Saitoh E. Long-range spin Seebeck effect and acoustic spin pumping. Nat Mater 2011; 10:737-741. [PMID: 21857673 DOI: 10.1038/nmat3099] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Accepted: 07/13/2011] [Indexed: 05/31/2023]
Abstract
Imagine that a metallic wire is attached to a part of a large insulator, which itself exhibits no magnetization. It seems impossible for electrons in the wire to register where the wire is positioned on the insulator. Here we found that, using a Ni₈₁Fe₁₉/Pt bilayer wire on an insulating sapphire plate, electrons in the wire recognize their position on the sapphire. Under a temperature gradient in the sapphire, surprisingly, the voltage generated in the Pt layer is shown to reflect the wire position, although the wire is isolated both electrically and magnetically. This non-local voltage is due to the coupling of spins and phonons: the only possible carrier of information in this system. We demonstrate this coupling by directly injecting sound waves, which realizes the acoustic spin pumping. Our finding provides a persuasive answer to the long-range nature of the spin Seebeck effect, and it opens the door to 'acoustic spintronics' in which sound waves are exploited for constructing spin-based devices.
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Takagi T, Onishi M, Urawa M, Naito M, Fujiwara A, Kobayashi T, Kobayashi H, Toda M, Boveda D, Gil-Bernabe P. Protective Effect of Thrombomodulin in a Murine Model of Allergen-Induced Asthma. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.266] [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: 10/18/2022]
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Beppu T, Gil-Bernabe P, Boveda-Ruiz D, D'Alessandro-Gabazza C, Matsuda Y, Toda M, Miyake Y, Shiraki K, Murata M, Murata T, Yano Y, Morser J, Gabazza EC, Takei Y. High incidence of tumors in diabetic thrombin activatable fibrinolysis inhibitor and apolipoprotein E double-deficient mice. J Thromb Haemost 2010; 8:2514-22. [PMID: 20723031 DOI: 10.1111/j.1538-7836.2010.04023.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Activation of the complement system has been implicated in tumor growth. The antifibrinolytic protein, activated thrombin-activatable fibrinolysis inhibitor (TAFIa), can modulate the activation of the complement system by inactivating the anaphylatoxins C3a and C5a. The apolipoprotein-E (ApoE) genotype has been associated with carcinogenesis. OBJECTIVE The aim of this study was to evaluate whether TAFIa can affect the development of cancer in the ApoE-deficient mouse model. METHODS TAFI and ApoE double-knockout mice were generated. A group of mice was treated with the diabetogenic and carcinogenic compound streptozotocin (stz). Mice treated with saline, single knockout mice and wild-type (wt) mice served as controls. RESULTS Six months after treatment with stz, mice were sacrificed. Hepatic tumors were found in male double-knockout mice treated with stz but none was found in control animals that were not treated with stz or in single knockout of ApoE or wt animals. There was no significant difference in coagulation system activation between the groups of mice. The plasma concentrations of C5a, factor D and transforming growth factor-β1 were increased in TAFI/ApoE double-deficient mice treated with stz compared with the mice of the same genotype treated with saline. CONCLUSION Apo-E deficiency alone was not associated with tumors but the lack of TAFI appears to make the mice permissive for tumor formation in ApoE mice.
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Affiliation(s)
- T Beppu
- Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
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Ohta S, Kawakami Y, Okano H, Toda M. P45. Functional analysis of macrophage migration inhibitory factor (MIF) in the mouse neural stem/progenitor cells. Differentiation 2010. [DOI: 10.1016/j.diff.2010.09.051] [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: 10/18/2022]
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Kaburaki Y, Fujimura T, Kurata K, Masuda K, Toda M, Yasueda H, Chida K, Kawarai S, Sakaguchi M. Induction of Th1 immune responses to Japanese cedar pollen allergen (Cry j 1) in mice immunized with Cry j 1 conjugated with CpG oligodeoxynucleotide. Comp Immunol Microbiol Infect Dis 2010; 34:157-61. [PMID: 20638725 DOI: 10.1016/j.cimid.2010.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Accepted: 06/22/2010] [Indexed: 11/18/2022]
Abstract
We determined whether a major Japanese cedar pollen allergen (Cry j 1) conjugated with CpG oligodeoxynucleotide would enhance allergen-specific Th1 responses in mice. Cry j 1 conjugated with CpG (Cry j 1-CpG) induced IL-12 in the spleen cells of naïve mice. Cry j 1-CpG immunization of BALB/c mice suppressed anti-Cry j 1 IgE response and enhanced anti-Cry j 1 IgG(2a) to subsequent Cry j 1 and alum adjuvant injection. CD4(+)T cells isolated from the spleens in mice immunized with Cry j 1-CpG produced higher IFN-γ levels than did CD4(+)T cells obtained from mice as negative controls. Our results suggested that Cry j 1-CpG immunization can induce Cry j 1-specific Th1 immune responses, thereby inhibiting IgE response to the pollen allergen.
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Affiliation(s)
- Y Kaburaki
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
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Qin L, D'Alessandro-Gabazza CN, Aoki S, Gil-Bernabe P, Yano Y, Takagi T, Boveda-Ruiz D, Ramirez Marmol AY, San Martin Montenegro VT, Toda M, Miyake Y, Taguchi O, Takei Y, Morser J, Gabazza EC. Pulmonary hypertension is ameliorated in mice deficient in thrombin-activatable fibrinolysis inhibitor. J Thromb Haemost 2010; 8:808-16. [PMID: 20088932 DOI: 10.1111/j.1538-7836.2010.03751.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The fibrinolytic system has been implicated in the pathogenesis of pulmonary hypertension (PH). Thrombin-activatable fibrinolysis inhibitor (TAFI) inhibits fibrinolysis and therefore its absence would be expected to increase fibrinolysis and ameliorate PH. OBJECTIVE The objective of the present study was to evaluate the effect of TAFI deficiency on pulmonary hypertension in the mouse. METHODS AND RESULTS PH was induced in C57/Bl6 wild-type (WT) or TAFI-deficient (KO) mice by weekly subcutaneous treatment with 600 mg kg(-1) monocrotaline (MCT) for 8 weeks. PH was inferred from right heart hypertrophy measured using the ratio of right ventricle-to-left ventricle-plus-septum weight [RV/(LV+S)]. Pulmonary vascular remodeling was analyzed by morphometry. TAFI-deficient MCT-treated and wild-type MCT-treated mice suffered similar weight loss. TAFI-deficient MCT-treated mice had reduced levels of total protein and tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), transforming growth factor-beta (TGF-beta) and monocyte chemoattractant protein-1 (MCP-1) in bronchial alveolar lavage compared with wild-type MCT-treated mice. The ratio of RV to (LV+S) weight was significantly higher in WT/MCT than in KO/MCT mice. The pulmonary artery wall area and vascular stenosis were both greater in MCT-treated WT mice compared with MCT-treated TAFI-deficient mice. CONCLUSIONS TAFI-deficient MCT-treated mice had less pulmonary hypertension, vascular remodeling and reduced levels of cytokines compared with MCT-treated WT animals, possibly as a result of reduced coagulation activation.
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MESH Headings
- Animals
- Biomarkers/metabolism
- Bronchoalveolar Lavage Fluid/immunology
- Capillary Permeability
- Carboxypeptidase B2/deficiency
- Carboxypeptidase B2/genetics
- Chemokine CCL2/metabolism
- Disease Models, Animal
- Fibrinolysis/genetics
- Hypertension, Pulmonary/blood
- Hypertension, Pulmonary/chemically induced
- Hypertension, Pulmonary/genetics
- Hypertension, Pulmonary/immunology
- Hypertension, Pulmonary/pathology
- Hypertension, Pulmonary/prevention & control
- Hypertrophy, Right Ventricular/blood
- Hypertrophy, Right Ventricular/prevention & control
- Inflammation Mediators/metabolism
- Interleukin-6/metabolism
- Lung/blood supply
- Lung/immunology
- Lung/metabolism
- Lung/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Monocrotaline
- Platelet-Derived Growth Factor/metabolism
- Pulmonary Artery/metabolism
- Pulmonary Artery/pathology
- Transforming Growth Factor beta1/metabolism
- Tumor Necrosis Factor-alpha/metabolism
- Weight Loss
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Affiliation(s)
- L Qin
- Department of Immunology, Mie University School of Medicine, Edobashi 2-174, Tsu city, Mie 514-8507, Japan
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Abstract
The reaction kinetics for phenol biodegradation at low substrate concentrations can be estimated based on the analysis of changes in the dissolved oxygen concentration in the bulk liquid during biodegradation. The measured oxygen concentration changes with an interesting behavior as biodegradation proceeds. The oxygen concentration in the bulk liquid decreases rapidly in the early stages of degradation and subsequently decreases linearly and then rapidly recovers to the initial saturated level. Taking into account the oxygen transfer rate between gas and liquid phases and oxygen consumption rate by microbes, the change in the dissolved oxygen concentration can be simulated with an unsteady state mass balance equation and three kinetic models for the rate of phenol metabolism: a substrate-inhibited model; a zero-order model; and a combined model. In the combined model, it is assumed that, at phenol concentrations above 10 mg/L, the degradation rate is expressed by a substrate-inhibited model; whereas at concentrations below 10 mg/L the zero-order model is applied. It was found that the characteristics of the change in the dissolved oxygen concentration, especially the rapid increase at the end of degradation, can only be described by the combined kinetic model. This result suggests that conventional Haldane-type kinetics would be unsuitable for estimating the phenol consumption rate at low phenol concentrations, in particular, at concentrations less than 10 mg/L.
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Affiliation(s)
- M Shishido
- Department of Materials Science and Engineering, Yamagata University, 3-16 Jonan 4-chome, Yonezawa 992, Japan
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Takagi T, Taguchi O, Aoki S, Toda M, Yamaguchi A, Fujimoto H, Boveda-Ruiz D, Gil-Bernabe P, Ramirez AY, Naito M, Yano Y, D'Alessandro-Gabazza CN, Fujiwara A, Takei Y, Morser J, Gabazza EC. Direct effects of protein S in ameliorating acute lung injury. J Thromb Haemost 2009; 7:2053-63. [PMID: 19817989 DOI: 10.1111/j.1538-7836.2009.03642.x] [Citation(s) in RCA: 20] [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] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Protein S may exert an anticoagulant activity by enhancing the anticoagulant activity of activated protein C and/or by directly inhibiting the prothrombinase complex. Protein S itself may also directly regulate inflammatory responses and apoptosis. The role of protein S in acute lung injury (ALI) was unknown. This study evaluated the effect of protein S on ALI in the mouse. METHODS Animal ALI was induced in C57/BL6 mice by intratracheal instillation of lipopolysaccharide (LPS). Mice were treated with protein S or saline by intraperitoneal injection 1 h before LPS instillation. RESULTS Activated protein or protein S alone and combined activated protein C + protein S therapy decreased inflammatory markers and cytokines in mice with acute lung injury. In LPS-treated mice compared with controls ALI was induced as shown by significantly increased levels of total protein, tumor necrosis factor-alpha, interleukin-6 and monocyte chemoattractant protein-1 in the bronchoalveolar lavage fluid. Mice with ALI treated with protein S had significantly decreased concentrations of tumor necrosis factor-alpha and interleukin-6 in the lung compared with untreated animals. Thrombin-antithrombin III, a marker of the activity of the coagulation cascade, was unchanged. Protein S inhibited the expression of cytokines in vitro and increased activation of the Axl tyrosine kinase pathway in A549 epithelial cells. CONCLUSION Protein S protects against LPS-induced ALI, possibly by directly inhibiting the local expression of inflammatory cytokines without affecting coagulation.
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Affiliation(s)
- T Takagi
- Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu City, Mie Prefecture, Japan
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Toda M. Excitation of acoustic waves from cylindrical polyvinylidene fluoride (PVDF) film confined in a concentric wall. IEEE Trans Ultrason Ferroelectr Freq Control 2008; 55:1653-1659. [PMID: 18986955 DOI: 10.1109/tuffc.2008.841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This paper investigates acoustic wave radiation from cylindrical polyvinylidene fluoride (PVDF) film mounted inside a concentric wall with a small air gap. In such a structure, propagation is allowed only in the gap between the film and the wall surface, and the wave propagates in the axial direction of the cylinder. The radiation impedance of the cylindrical transducer inside the concentric wall has been calculated using a one-dimensional propagation model. After calculating the mechanical impedance of the cylindrical PVDF film, the generated acoustic wave has been calculated as a function of frequency with various air gaps between the PVDF film and the wall. It has been found that the excited acoustic wave becomes stronger for a narrower air gap and shows a maximum at a specific air gap. This phenomenon has been explained as the match between the transducer impedance and the radiation impedance of the air gap. When the gap is too small, the radiation impedance exceeds the transducer's mechanical impedance, the acoustic wave radiation decreases with the decreasing gap, and the resonance frequency increases due to loading by the imaginary part of the excessive radiation impedance. All these theoretical results have been experimentally confirmed.
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Affiliation(s)
- M Toda
- Meas. Specialties Inc., Wayne, PA, USA.
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Toda M. The need for a science of civilization. Ciba Found Symp 2008; 1:191-204. [PMID: 5212136 DOI: 10.1002/9780470719848.ch13] [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] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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