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Arakawa M, Saiki T, Wada K, Ogawa K, Kadono T, Shirai K, Sawada H, Ishibashi K, Honda R, Sakatani N, Iijima Y, Okamoto C, Yano H, Takagi Y, Hayakawa M, Michel P, Jutzi M, Shimaki Y, Kimura S, Mimasu Y, Toda T, Imamura H, Nakazawa S, Hayakawa H, Sugita S, Morota T, Kameda S, Tatsumi E, Cho Y, Yoshioka K, Yokota Y, Matsuoka M, Yamada M, Kouyama T, Honda C, Tsuda Y, Watanabe S, Yoshikawa M, Tanaka S, Terui F, Kikuchi S, Yamaguchi T, Ogawa N, Ono G, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Takeuchi H, Yamamoto Y, Okada T, Hirose C, Hosoda S, Mori O, Shimada T, Soldini S, Tsukizaki R, Iwata T, Ozaki M, Abe M, Namiki N, Kitazato K, Tachibana S, Ikeda H, Hirata N, Hirata N, Noguchi R, Miura A. An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime. Science 2020; 368:67-71. [PMID: 32193363 DOI: 10.1126/science.aaz1701] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 03/04/2020] [Indexed: 11/02/2022]
Abstract
The Hayabusa2 spacecraft investigated the small asteroid Ryugu, which has a rubble-pile structure. We describe an impact experiment on Ryugu using Hayabusa2's Small Carry-on Impactor. The impact produced an artificial crater with a diameter >10 meters, which has a semicircular shape, an elevated rim, and a central pit. Images of the impact and resulting ejecta were recorded by the Deployable CAMera 3 for >8 minutes, showing the growth of an ejecta curtain (the outer edge of the ejecta) and deposition of ejecta onto the surface. The ejecta curtain was asymmetric and heterogeneous and it never fully detached from the surface. The crater formed in the gravity-dominated regime; in other words, crater growth was limited by gravity not surface strength. We discuss implications for Ryugu's surface age.
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Affiliation(s)
- M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - K Ogawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.,JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Kadono
- Department of Basic Sciences, University of Occupational and Environmental Health, Kitakyusyu 807-8555, Japan
| | - K Shirai
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Ishibashi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - C Okamoto
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Takagi
- Department of Regional Business, Aichi Toho University, Nagoya 465-8515, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - P Michel
- Observatoire de la Côte d'Azur, Université Côte d'Azur, CNRS, Laboratoire Lagrange, CS34229, 06304 Nice Cedex 4, France
| | - M Jutzi
- Physics Institute, University of Bern, National Centre of Competence in Research PlanetS, Gesellschaftsstrasse 6, 3012, Bern, Switzerland
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Kimura
- Department of Electrical Engineering, Tokyo University of Science, Noda 278-8510, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Toda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Imamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Sugita
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Morota
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - S Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - E Tatsumi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, 38205 San Cristóbal de La Laguna, Spain
| | - Y Cho
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Yoshioka
- Department of Complexity Science and Engineering, The University of Tokyo, Kashiwa 277-8561, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - C Honda
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Watanabe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - F Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - C Hirose
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Soldini
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L3 5TQ, UK
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - K Kitazato
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - S Tachibana
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Ikeda
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - N Hirata
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
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Miyagawa T, Kadono T, Masui Y, Saigusa R, Nakamura K, Sakurai N, Sato S. An erythematous raised dermatofibroma-like nodule. Clin Exp Dermatol 2017; 43:477-480. [PMID: 29282750 DOI: 10.1111/ced.13348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2017] [Indexed: 11/30/2022]
Affiliation(s)
- T Miyagawa
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - T Kadono
- Department of Dermatology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Y Masui
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - R Saigusa
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - K Nakamura
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | | | - S Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
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Hau CS, Shimizu T, Tada Y, Takeoka S, Shibata S, Mitsui A, Kamata M, Asano Y, Sugaya M, Kadono T, Sato S, Watanabe S. 023 The vitamin D3 analog, maxacalcitol, ameliorates imiquimod induced murine psoriasiform skin inflammation by inducing regulatory T cells and downregulating Th17 responses. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.036] [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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Takahashi T, Asano Y, Nakamura K, Yamashita T, Saigusa R, Ichimura Y, Toyama T, Taniguchi T, Yoshizaki A, Tamaki Z, Tada Y, Sugaya M, Kadono T, Sato S. A potential contribution of antimicrobial peptide LL-37 to tissue fibrosis and vasculopathy in systemic sclerosis. Br J Dermatol 2016; 175:1195-1203. [PMID: 27105895 DOI: 10.1111/bjd.14699] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2016] [Indexed: 01/03/2023]
Abstract
BACKGROUND LL-37 is an antimicrobial peptide with pleiotropic effects on the immune system, angiogenesis and tissue remodelling. These are cardinal pathological events in systemic sclerosis (SSc). OBJECTIVES To elucidate the potential role of LL-37 in SSc. METHODS The expression of target molecules was evaluated by immunostaining and quantitative reverse-transcription real-time polymerase chain reaction in human and murine skin. The mechanisms regulating LL-37 expression in endothelial cells were examined by gene silencing and chromatin immunoprecipitation. Serum LL-37 levels were determined by enzyme-linked immunosorbent assay. RESULTS In SSc lesional skin, LL-37 expression was increased in dermal fibroblasts, perivascular inflammatory cells, keratinocytes and, particularly, dermal small vessels. Expression positively correlated with interferon-α expression, possibly reflecting LL-37-dependent induction of interferon-α. In SSc animal models, bleomycin-treated skin exhibited the expression pattern of CRAMP, a murine homologue of LL-37, similar to that of LL-37 in SSc lesional skin. Furthermore, Fli1+/- mice showed upregulated expression of CRAMP in dermal small vessels. Fli1 binding to the CAMP (LL-37 gene) promoter and Fli1 deficiency-dependent induction of LL-37 were also confirmed in human dermal microvascular endothelial cells. In the analysis of sera, patients with SSc had serum LL-37 levels significantly higher than in healthy controls. Furthermore, serum LL-37 levels positively correlated with skin score and the activity of alveolitis and were significantly elevated in patients with digital ulcers compared with those without. CONCLUSIONS LL-37 upregulation, induced by Fli1 deficiency at least in endothelial cells, potentially contributes to the development of skin sclerosis, interstitial lung disease and digital ulcers in SSc.
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Affiliation(s)
- T Takahashi
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Asano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Nakamura
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Yamashita
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - R Saigusa
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Ichimura
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Toyama
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Taniguchi
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - A Yoshizaki
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Z Tamaki
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Tada
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - M Sugaya
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Kadono
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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Takahashi T, Asano Y, Noda S, Aozasa N, Akamata K, Taniguchi T, Ichimura Y, Toyama T, Sumida H, Kuwano Y, Tada Y, Sugaya M, Kadono T, Sato S. A possible contribution of lipocalin-2 to the development of dermal fibrosis, pulmonary vascular involvement and renal dysfunction in systemic sclerosis. Br J Dermatol 2015; 173:681-9. [PMID: 25781362 DOI: 10.1111/bjd.13779] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND Lipocalin-2 is an adipocytokine implicated in apoptosis, innate immunity, angiogenesis, and the development of chronic kidney disease. OBJECTIVES To investigate the role of lipocalin-2 in systemic sclerosis (SSc). MATERIALS AND METHODS Serum lipocalin-2 levels were determined by enzyme-linked immunosorbent assay in 50 patients with SSc and 19 healthy subjects. Lipocalin-2 expression was evaluated in the skin of patients with SSc and bleomycin (BLM)-treated mice and in Fli1-deficient endothelial cells by reverse transcriptase-real time polymerase chain reaction, immunoblotting and/or immunohistochemistry. RESULTS Although serum lipocalin-2 levels were comparable between patients with SSc and healthy controls, the prevalence of scleroderma renal crisis was significantly higher in patients with SSc with elevated serum lipocalin-2 levels than in those with normal levels. Furthermore, serum lipocalin-2 levels inversely correlated with estimated glomerular filtration rate in patients with SSc with renal dysfunction. Among patients with SSc with normal renal function, serum lipocalin-2 levels positively correlated with skin score in patients with diffuse cutaneous SSc with disease duration of < 3 years and inversely correlated with estimated right ventricular systolic pressure in total patients with SSc. Importantly, in SSc lesional skin, lipocalin-2 expression was increased in dermal fibroblasts and endothelial cells. In BLM-treated mice, lipocalin-2 was highly expressed in dermal fibroblasts, but not in endothelial cells. On the other hand, the deficiency of transcription factor Fli1, which is implicated in SSc vasculopathy, induced lipocalin-2 expression in cultivated endothelial cells. CONCLUSIONS Lipocalin-2 may be involved in renal dysfunction and dermal fibrosis of SSc. Dysregulated matrix metalloproteinase-9/lipocalin-2-dependent angiogenesis due to Fli1 deficiency may contribute to the development of pulmonary arterial hypertension associated with SSc.
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Affiliation(s)
- T Takahashi
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Asano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Noda
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - N Aozasa
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Akamata
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Taniguchi
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Ichimura
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Toyama
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - H Sumida
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Kuwano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Tada
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - M Sugaya
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Kadono
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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Mitsui A, Tada Y, Takahashi T, Shibata S, Kamata M, Miyagaki T, Fujita H, Sugaya M, Kadono T, Sato S, Asano Y. Serum IL-33 levels are increased in patients with psoriasis. Clin Exp Dermatol 2015; 41:183-9. [PMID: 25976154 DOI: 10.1111/ced.12670] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND Interleukin (IL)-33 is a recently identified cytokine, which is a member of the IL-1 family and binds to a heterodimeric receptor comprising ST2 (suppression of tumorigenicity 2) and IL-1 receptor accessory protein. Serum levels of IL-33 have been reported to be upregulated in various T helper (Th)1/Th17-mediated diseases, such as rheumatoid arthritis and inflammatory bowel disease. IL-33 expression is increased in lesional skin in patients with psoriasis, but serum levels in patients with psoriasis have not yet been studied. AIM To study serum IL-33 levels in patients with psoriasis, a Th1/Th17-mediated skin disease, before and after anti-tumour necrosis factor (TNF)-α therapy. METHODS Serum IL-33 levels were measured in patients with psoriasis vulgaris (PV), psoriatic arthritis (PsA) or pustular psoriasis (PP), and compared with those of healthy controls. Associations between serum IL-33 levels and serum TNF-α, IL-6, vascular endothelial growth factor and C-reactive protein levels were also studied. In addition, the effect of IL-33 stimulation on IL-6, IL-8, TNF-α and VEGF secretion by human keratinocyte was analysed. RESULTS Serum IL-33 levels in patients with PV, PsA and PP were significantly higher than those in healthy controls. Serum IL-33 levels correlated with serum TNF-α levels in patients with psoriasis, and decreased after anti-TNF-α therapy. IL-33 stimulated IL-6 and IL-8 secretion by human keratinocytes. CONCLUSIONS These results suggest that serum IL-33 levels generally reflect increased inflammation in patients with psoriasis.
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Affiliation(s)
- A Mitsui
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Y Tada
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - T Takahashi
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - S Shibata
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - M Kamata
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - T Miyagaki
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - H Fujita
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - M Sugaya
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - T Kadono
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - S Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Y Asano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
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Fujisawa Y, Yoshino K, Kadono T, Miyagawa T, Nakamura Y, Fujimoto M. Chemoradiotherapy with taxane is superior to conventional surgery and radiotherapy in the management of cutaneous angiosarcoma: a multicentre, retrospective study. Br J Dermatol 2014; 171:1493-500. [DOI: 10.1111/bjd.13110] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2014] [Indexed: 12/21/2022]
Affiliation(s)
- Y. Fujisawa
- Department of Dermatology; University of Tsukuba; 1-1-1 Tennodai Tsukuba Ibaraki 305-8575 Japan
| | - K. Yoshino
- Department of Dermatology; Tokyo Metropolitan Cancer and Infectious disease Center Komagome Hospital; Tokyo Japan
| | - T. Kadono
- Department of Dermatology; University of Tokyo; Tokyo Japan
| | - T. Miyagawa
- Department of Dermatology; University of Tokyo; Tokyo Japan
| | - Y. Nakamura
- Department of Dermatology; University of Tsukuba; 1-1-1 Tennodai Tsukuba Ibaraki 305-8575 Japan
| | - M. Fujimoto
- Department of Dermatology; University of Tsukuba; 1-1-1 Tennodai Tsukuba Ibaraki 305-8575 Japan
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Fujisawa Y, Yoshino K, Ohara K, Kadono T, Takenouchi T, Hatta N, Uhara H, Kiyohara Y, Murata Y, Matsushita S, Hayashi T. The Role of Sentinel Lymph Node Biopsy in the Management of Invasive Extramammary Paget'S Disease: Multi-Center, Retrospective Study of 151 Patients. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu344.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sugai I, Oyaizu M, Takeda Y, Kawakami H, Kawasaki K, Hattori T, Kadono T. Sputtering angle effects by Kr mixing in N+ ion beam on the lifetime of nitrided carbon stripper foils. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-013-2665-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Kamata M, Tada Y, Tatsuta A, Kawashima T, Shibata S, Mitsui H, Asano Y, Sugaya M, Kadono T, Kanda N, Watanabe S, Sato S. Ciclosporin A inhibits production of interleukin-12/23p40 and interleukin-23 by the human monocyte cell line, THP-1. Clin Exp Dermatol 2013; 38:545-8. [DOI: 10.1111/ced.12110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2012] [Indexed: 01/03/2023]
Affiliation(s)
- M. Kamata
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - Y. Tada
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - A. Tatsuta
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - T. Kawashima
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - S. Shibata
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - H. Mitsui
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - Y. Asano
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - M. Sugaya
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - T. Kadono
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - N. Kanda
- Department of Dermatology; Teikyo University School of Medicine; Tokyo; Japan
| | - S. Watanabe
- Department of Dermatology; Teikyo University School of Medicine; Tokyo; Japan
| | - S. Sato
- Department of Dermatology; Faculty of Medicine; University of Tokyo; Tokyo; Japan
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Noda S, Asano Y, Takahashi T, Akamata K, Aozasa N, Taniguchi T, Ichimura Y, Toyama T, Sumida H, Kuwano Y, Yanaba K, Tada Y, Sugaya M, Kadono T, Sato S. Decreased cathepsin V expression due to Fli1 deficiency contributes to the development of dermal fibrosis and proliferative vasculopathy in systemic sclerosis. Rheumatology (Oxford) 2013; 52:790-9. [DOI: 10.1093/rheumatology/kes379] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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12
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Kadono T, Sakaiya T, Hironaka Y, Nagatomo H, Sano T, Watari T, Otani K, Fujiwara T, Mochiyama T, Fujioka S, Shigemori K, Yabuta H, Kondo T, Arakawa M, Nakamura A, Kurosawa K, Sugita S, Ohno S, Matsui T. Flyer acceleration experiments using high-power laser. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135919002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Shigemori K, Sakaiya T, Asakura Y, Kondo T, Shimizu K, Kadono T, Hironaka Y, Azechi H. Sound velocity measurements by x-ray shadowgraph technique for melting phenomena at ultrahigh-pressure regime. Rev Sci Instrum 2012; 83:10E529. [PMID: 23127036 DOI: 10.1063/1.4739055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Developments in measuring sound velocity of matter under ultrahigh pressure are described. We employed a time-resolved x-ray shadowgraph technique to measure the sound velocity of shock-compressed diamond and iron foils at around melt. The sound velocity significantly dropped at melting, a behavior that has been difficult to clarify by conventional measurements by subtracting particle velocity from shock velocity (u(s) - u(p)). In addition to sound velocity, other important parameters were also obtained simultaneously.
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Affiliation(s)
- K Shigemori
- Institute of Laser Engineering, Osaka University, Suita, Osaka, Japan
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14
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Noda S, Asano Y, Akamata K, Aozasa N, Taniguchi T, Takahashi T, Ichimura Y, Toyama T, Sumida H, Yanaba K, Tada Y, Sugaya M, Kadono T, Sato S. Constitutive activation of c-Abl/protein kinase C-δ/Fli1 pathway in dermal fibroblasts derived from patients with localized scleroderma. Br J Dermatol 2012; 167:1098-105. [PMID: 22591006 DOI: 10.1111/j.1365-2133.2012.11055.x] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND A noncanonical pathway of transforming growth factor-β signalling, the c-Abl/protein kinase C-δ (PKC-δ)/Friend leukemia virus integration 1 (Fli1) axis, is a powerful regulator of collagen synthesis in dermal fibroblasts. OBJECTIVES To investigate the significance of the c-Abl/PKC-δ/Fli1 pathway for the establishment of the profibrotic phenotype in lesional dermal fibroblasts from patients with localized scleroderma (LSc). METHODS The activation status of the c-Abl/PKC-δ/Fli1 pathway was evaluated by immunoblotting and chromatin immunoprecipitation using cultured dermal fibroblasts from patients with LSc and closely matched healthy controls and by immunostaining on skin sections. The effects of a platelet-derived growth factor receptor inhibitor AG1296 and gene silencing of c-Abl on the expression levels of type I collagen were evaluated by immunoblotting. RESULTS The phosphorylation levels of Fli1 at threonine 312 were increased, while the total Fli1 levels and the binding of Fli1 to the COL1A2 promoter were decreased, in cultured LSc fibroblasts compared with cultured normal fibroblasts. Furthermore, in cultured LSc fibroblasts, the expression levels of c-Abl were elevated compared with cultured normal fibroblasts and PKC-δ was preferentially localized in the nucleus. These findings were also confirmed in vivo by immunohistochemistry using skin sections. Moreover, gene silencing of c-Abl, but not AG1296, significantly suppressed the expression of type I collagen in cultured LSc fibroblasts. CONCLUSIONS Constitutive activation of the c-Abl/PKC-δ/Fli1 pathway at least partially contributes to the establishment of the profibrotic phenotype in LSc dermal fibroblasts, which provides a novel molecular basis to explain the efficacy of imatinib against skin sclerosis in a certain subset of LSc.
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Affiliation(s)
- S Noda
- Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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15
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Yanaba K, Asano Y, Noda S, Akamata K, Aozasa N, Taniguchi T, Takahashi T, Ichimura Y, Toyama T, Sumida H, Kuwano Y, Tada Y, Sugaya M, Kadono T, Sato S. Augmented production of soluble CD93 in patients with systemic sclerosis and clinical association with severity of skin sclerosis. Br J Dermatol 2012; 167:542-7. [PMID: 22540233 DOI: 10.1111/j.1365-2133.2012.11020.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND The cell surface protein CD93, expressed on endothelial and myeloid cells, mediates phagocytosis, inflammation and cell adhesion. A soluble form of CD93 (sCD93) is released during inflammation. OBJECTIVES To determine the serum sCD93 level and its association with clinical parameters in patients with systemic sclerosis (SSc). METHODS Serum sCD93 levels were examined by enzyme-linked immunosorbent assay in 59 patients with SSc, 24 patients with systemic lupus erythematosus and 47 healthy individuals. The expression of CD93 in skin tissues was examined immunohistochemically. In a retrospective longitudinal study, sera from 11 patients with SSc were analysed. RESULTS Serum sCD93 levels were increased in patients with SSc compared with healthy individuals (P<0·001). Patients with diffuse cutaneous SSc showed greater levels of sCD93 than those with limited cutaneous SSc (P<0·01) or systemic lupus erythematosus (P<0·01). Serum sCD93 levels correlated positively with the severity of skin sclerosis. Strong CD93 immunostaining was observed on endothelial cells in lesional skin tissues. In the longitudinal study, sCD93 levels decreased in parallel with improvement in skin sclerosis. CONCLUSIONS Serum sCD93 levels are increased in patients with SSc and correlate with the severity and activity of skin sclerosis. CD93 may contribute to the development of skin fibrosis in SSc.
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Affiliation(s)
- K Yanaba
- Department of Dermatology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Ohmatsu H, Sugaya M, Miyagaki T, Suga H, Fujita H, Asano Y, Tada Y, Kadono T, Sato S. BAFF levels are increased in lesional skin and sera in patients with cutaneous T-cell lymphoma. Br J Dermatol 2012; 167:359-67. [DOI: 10.1111/j.1365-2133.2012.10998.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Taniguchi T, Asano Y, Akamata K, Aozasa N, Noda S, Takahashi T, Ichimura Y, Toyama T, Sumida H, Kuwano Y, Yanaba K, Tada Y, Sugaya M, Kadono T, Sato S. Serum levels of ADAM12-S: possible association with the initiation and progression of dermal fibrosis and interstitial lung disease in patients with systemic sclerosis. J Eur Acad Dermatol Venereol 2012; 27:747-53. [DOI: 10.1111/j.1468-3083.2012.04558.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [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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18
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Miyagaki T, Sugaya M, Kamata M, Suga H, Morimura S, Tatsuta A, Uwajima Y, Yamamoto M, Shibata S, Fujita H, Asano Y, Kadono T, Sato S, Tada Y. Serum angiogenin levels are decreased in patients with psoriasis. Clin Exp Dermatol 2012; 37:792-3. [PMID: 22439842 DOI: 10.1111/j.1365-2230.2012.04345.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Miyagaki T, Sugaya M, Suga H, Ohmatsu H, Fujita H, Asano Y, Tada Y, Kadono T, Sato S. Increased CCL18 expression in patients with cutaneous T-cell lymphoma: association with disease severity and prognosis. J Eur Acad Dermatol Venereol 2012; 27:e60-7. [PMID: 22404649 DOI: 10.1111/j.1468-3083.2012.04495.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND CC chemokine ligand (CCL) 18 is expressed by monocytes and dendritic cells (DCs), and has potent chemotactic activity for T cells, B cells and DCs. CCL18 expression is up-regulated in lesional skin of atopic dermatitis and bullous pemphigoid, suggesting its important roles in the development of these skin diseases. OBJECTIVE To investigate roles of CCL18 in cutaneous T-cell lymphoma (CTCL). METHODS The CCL18 messenger RNA (mRNA) expression in CTCL skin (n = 21) and in normal skin (n = 7) was examined by quantitative RT-PCR. CCL18 expression was also examined by immunohistochemistry. Serum CCL18 levels were measured in 38 patients with CTCL and 20 healthy controls by enzyme-linked immunosorbent assay. We also analysed correlation between serum CCL18 levels and other clinical and laboratory data. RESULTS The CTCL lesional skin contained higher levels of CCL18 mRNA than normal skin. CCL18 was expressed by dermal macrophages and DCs in CTCL skin. Serum CCL18 levels in patients with CTCL were significantly higher than those of healthy controls and correlated with types of skin lesions. They also significantly correlated with modified severity-weighted assessment scores, serum sIL-2R, LDH, IL-4, IL-10, IL-31, CCL17 and CCL26 levels. Patients with high serum levels of CCL18 showed significantly poor prognosis compared with those with low CCL18 levels. CONCLUSION CCL18 mRNA is up-regulated in CTCL lesional skin, and serum CCL18 levels are significantly increased and correlated with the severity of CTCL. These results suggest that CCL18 may be associated with the development of CTCL.
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Affiliation(s)
- T Miyagaki
- Department of Dermatology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
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20
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Kamata M, Tada Y, Tatsuta A, Kawashima T, Shibata S, Mitsui H, Asano Y, Sugaya M, Kadono T, Kanda N, Watanabe S, Sato S. Serum lipocalin-2 levels are increased in patients with psoriasis. Clin Exp Dermatol 2012; 37:296-9. [DOI: 10.1111/j.1365-2230.2011.04265.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [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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21
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Toyama T, Asano Y, Takahashi T, Aozasa N, Akamata K, Noda S, Taniguchi T, Ichimura Y, Sumida H, Tamaki Z, Masui Y, Tada Y, Sugaya M, Sato S, Kadono T. Clinical significance of serum retinol binding protein-4 levels in patients with systemic sclerosis. J Eur Acad Dermatol Venereol 2011; 27:337-44. [PMID: 22211766 DOI: 10.1111/j.1468-3083.2011.04413.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Retinol binding protein-4 (RBP-4) is a member of adipocytokines, which is potentially associated with fibrosis, vasodilation, and angiogenesis in addition to insulin resistance. OBJECTIVE To investigate the clinical significance of serum RBP4 levels in patients with systemic sclerosis (SSc), which is a systemic autoimmune disease characterized by fibrosis and vasculopathy. METHODS Serum RBP4 levels were determined by enzyme-linked immunosorbent assay in 62 SSc patients and 19 healthy controls. RESULTS Similar to patients with chronic kidney disease, serum RBP4 levels inversely correlated with estimated glomerular filtration rate in SSc patients with renal dysfunction. Therefore, analyses were carried out by excluding SSc patients with estimated glomerular filtration rate <60 mL/min/1.73 m(2) . Serum RBP4 levels were significantly lower in diffuse cutaneous SSc (dcSSc) than in control subjects [median (25-75 percentile); 25.8 μg/mL (19.6-47.0) vs. 43.1 μg/mL (31.7-53.4), P < 0.05], while there was no significant difference between limited cutaneous SSc (lcSSc) [28.0 μg/mL (25.4-43.3)] and control subjects. In both of dcSSc and lcSSc, patients with Raynaud's phenomenon had RBP4 levels significantly lower than those without. Furthermore, serum RBP4 levels inversely correlated with pulmonary function test results in dcSSc and with right ventricular systolic pressure in lcSSc. CONCLUSION Decreased RBP4 levels are associated with the prevalence of Raynaud's phenomenon in dcSSc and lcSSc, with the severity of interstitial lung disease in dcSSc, and with the degree of pulmonary vascular involvement in lcSSc, suggesting the possible contribution of RBP4 to the pathological events in this disorder.
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Affiliation(s)
- T Toyama
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
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22
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Aozasa N, Asano Y, Akamata K, Noda S, Masui Y, Yamada D, Tamaki Z, Tada Y, Sugaya M, Kadono T, Sato S. Serum apelin levels: clinical association with vascular involvements in patients with systemic sclerosis. J Eur Acad Dermatol Venereol 2011; 27:37-42. [PMID: 22112232 DOI: 10.1111/j.1468-3083.2011.04354.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Apelin is a bioactive peptide exerting its pro-angiogenic and pro-fibrotic effects in a context-dependent manner through the activation of its receptor APJ, which is ubiquitously expressed on the surface of various cell types. The activation of apelin/APJ signalling appears to be involved in the pathological process of fibrotic disorders, including liver cirrhosis. OBJECTIVE As an initial step to clarify the role of apelin/APJ signalling in the pathogenesis of systemic sclerosis (SSc), we investigated serum apelin levels and their clinical association in patients with SSc. METHODS Serum apelin levels were determined by a specific enzyme-linked immunosorbent assay in 56 SSc patients and 18 healthy controls. RESULTS Serum apelin levels were comparable among three groups, including diffuse cutaneous SSc, limited cutaneous SSc and control subjects (1.77 ± 1.48, 1.63 ± 1.51 and 1.61 ± 0.44 ng/mL, respectively). When we classified SSc patients into three groups according to disease duration, serum apelin levels were elevated in early SSc (<3 years) compared with mid-stage SSc (3-10 years) (1.74 ± 1.26 vs. 1.02 ± 0.52 ng/mL, P < 0.05). Importantly, in late stage SSc (>10 years), the prevalence of severe vascular involvements, including intractable skin ulcers, scleroderma renal crisis and pulmonary arterial hypertension, was significantly higher in patients with elevated serum apelin levels than in those without (100% vs. 20%, P < 0.05). CONCLUSION Apelin may be associated with altered and activated angiogenesis prior to fibrotic responses in early SSc and with the development of proliferative vasculopathy in late stage SSc.
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Affiliation(s)
- N Aozasa
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan
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Miyagaki T, Sugaya M, Suga H, Morimura S, Kamata M, Ohmatsu H, Fujita H, Asano Y, Tada Y, Kadono T, Sato S. Serum soluble CD26 levels: diagnostic efficiency for atopic dermatitis, cutaneous T-cell lymphoma and psoriasis in combination with serum thymus and activation-regulated chemokine levels. J Eur Acad Dermatol Venereol 2011; 27:19-24. [DOI: 10.1111/j.1468-3083.2011.04340.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Tsuchiyama A, Uesugi M, Matsushima T, Michikami T, Kadono T, Nakamura T, Uesugi K, Nakano T, Sandford SA, Noguchi R, Matsumoto T, Matsuno J, Nagano T, Imai Y, Takeuchi A, Suzuki Y, Ogami T, Katagiri J, Ebihara M, Ireland TR, Kitajima F, Nagao K, Naraoka H, Noguchi T, Okazaki R, Yurimoto H, Zolensky ME, Mukai T, Abe M, Yada T, Fujimura A, Yoshikawa M, Kawaguchi J. Three-Dimensional Structure of Hayabusa Samples: Origin and Evolution of Itokawa Regolith. Science 2011; 333:1125-8. [DOI: 10.1126/science.1207807] [Citation(s) in RCA: 207] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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25
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Morimura S, Sugaya M, Kai H, Kato T, Miyagaki T, Ohmatsu H, Kagami S, Asano Y, Mitsui H, Tada Y, Kadono T, Sato S. High levels of LIGHT and low levels of soluble herpesvirus entry mediator in sera of patients with atopic dermatitis. Clin Exp Dermatol 2011; 37:181-2. [DOI: 10.1111/j.1365-2230.2011.04079.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Masui Y, Asano Y, Shibata S, Noda S, Aozasa N, Akamata K, Yamada D, Tamaki Z, Tada Y, Sugaya M, Sato S, Kadono T. Serum adiponectin levels inversely correlate with the activity of progressive skin sclerosis in patients with diffuse cutaneous systemic sclerosis. J Eur Acad Dermatol Venereol 2011; 26:354-60. [DOI: 10.1111/j.1468-3083.2011.04077.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Noda S, Asano Y, Aozasa N, Akamata K, Yamada D, Masui Y, Tamaki Z, Kadono T, Sato S. Serum Tie2 levels: clinical association with microangiopathies in patients with systemic sclerosis. J Eur Acad Dermatol Venereol 2011; 25:1476-9. [DOI: 10.1111/j.1468-3083.2011.04012.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Shibata S, Tada Y, Hau C, Tatsuta A, Yamamoto M, Kamata M, Karakawa M, Asano Y, Mitsui H, Sugaya M, Kadono T, Saeki H, Kanda N, Sato S. Adiponectin as an anti-inflammatory factor in the pathogenesis of psoriasis: induction of elevated serum adiponectin levels following therapy. Br J Dermatol 2011; 164:667-70. [PMID: 21062267 DOI: 10.1111/j.1365-2133.2010.10123.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Nakagami G, Sanada H, Iizaka S, Kadono T, Higashino T, Koyanagi H, Haga N. Predicting delayed pressure ulcer healing using thermography: a prospective cohort study. J Wound Care 2011; 19:465-6, 468, 470 passim. [PMID: 21135794 DOI: 10.12968/jowc.2010.19.11.79695] [Citation(s) in RCA: 66] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To investigate whether thermography can be used to detect latent inflammation in pressure ulcers and predict pressure ulcer prognosis in a clinical setting. METHOD For this cohort study, we recruited 35 patients with stage II-IV pressure ulcers on the torso, who underwent thermographic assessment on discovery of their pressure ulcer. The patients were followed up for at least 3 weeks. Thermography was performed immediately after dressing removal. Pressure ulcers were classified into two groups depending on whether or not the wound site temperature was lower or higher than the periwound skin: the low temperature group and the high temperature group respectively. A generalised estimation equation was used to estimate the relative risk of delayed healing of pressure ulcers, comparing wounds with high temperatures and low temperatures. RESULTS Of the 35 patients, 21 had 'low temperature' wounds and 14 had 'high temperature' wounds at baseline. Two patients in the high temperature group presented with overt infection, and were excluded from further analysis. Twenty-two pressure ulcers were considered to heal 'normally' (that is, the wound area reduced by 30% or more within 3 weeks) and 16 did not heal. The baseline DESIGN score (a measure of gross wound status) did not differ in any subscales between the high and low temperature groups. The relative risk for delayed healing in high temperature cases was 2.25 (95% confidence intervals; 1.13-4.47, p=0.021). Sensitivity was 0.56, specificity was 0.82, positive predictive value was 0.75, and negative predictive value was 0.67. CONCLUSION Our results indicate that using thermography to classify pressure ulcers according to temperature could be a useful predictor of healing at 3 weeks, even though wound appearances may not differ at the point of thermographical assessment. The higher temperature in the wound site, when compared with periwound skin, may imply the presence of critical colonisation, or other factors which disturb the wound healing.
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Affiliation(s)
- G Nakagami
- Department of Gerontological Nursing / Wound Care, the University of Tokyo, Tokyo, Japan
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Kagenishi T, Yokawa K, Kadono T, Uezu K, Kawano T. Copper-Binding Peptides from Human Prion Protein and Newly Designed Peroxidative Biocatalysts. Z NATURFORSCH C 2011. [DOI: 10.5560/znc.2011.66c0182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Kimura A, Krasovskii EE, Nishimura R, Miyamoto K, Kadono T, Kanomaru K, Chulkov EV, Bihlmayer G, Shimada K, Namatame H, Taniguchi M. Strong rashba-type spin polarization of the photocurrent from bulk continuum States: experiment and theory for Bi(111). Phys Rev Lett 2010; 105:076804. [PMID: 20868068 DOI: 10.1103/physrevlett.105.076804] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Indexed: 05/29/2023]
Abstract
Strong spin polarization of the photocurrent from bulk continuum states of Bi(111) is experimentally observed. On the basis of ab initio one-step photoemission theory the effect is shown to originate from the strong polarization of the initial states at the surface and to be the result of the surface sensitivity of photoemission. Final state effects cause deviations of the k{∥} dependence of polarization from strictly antisymmetric relative to Γ.
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Affiliation(s)
- A Kimura
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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Kadono T, Sakaiya T, Hironaka Y, Otani K, Sano T, Fujiwara T, Mochiyama T, Kurosawa K, Sugita S, Sekine Y, Nishikanbara W, Matsui T, Ohno S, Shiroshita A, Miyanishi K, Ozaki N, Kodama R, Nakamura AM, Arakawa M, Fujioka S, Shigemori K. Impact experiments with a new technique for acceleration of projectiles to velocities higher than Earth's escape velocity of 11.2 km/s. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009je003385] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yabunaka K, Iizaka S, Nakagami G, Aoi N, Kadono T, Koyanagi H, Uno M, Ohue M, Sanada S, Sanada H. Can ultrasonographic evaluation of subcutaneous fat predict pressure ulceration? J Wound Care 2009; 18:192, 194, 196 passim. [DOI: 10.12968/jowc.2009.18.5.42173] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- K. Yabunaka
- Department of Radiology, Katsuragi Hospital, Kishiwada City, Osaka, Japan
| | - S. Iizaka
- Department of Gerontological Nursing/Wound Care Management, Division of Health Sciences and Nursing, University of Tokyo
| | - G. Nakagami
- Department of Gerontological Nursing/Wound Care Management, Division of Health Sciences and Nursing, University of Tokyo
| | - N. Aoi
- University of Tokyo Hospital
| | | | | | - M. Uno
- University of Tokyo Hospital
| | - M. Ohue
- Department of Orthopedics, Katsuragi Hospital, Kishwada City, Osaka, Japan
| | - S. Sanada
- Graduate School of Health Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan
| | - H. Sanada
- Department of Gerontological Nursing/Wound Care Management, Division of Health Sciences and Nursing, University of Tokyo
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Kadono T, Shigemori K, Fujioka S, Otani K, Sano T, Sakawa Y, Azechi H, Ozaki N, Kimura T, Miyanishi K, Endo T, Arakawa M, Nakamura AM, Sugita S, Matsui T. Impact vaporization of rocks using a high-power laser. ACTA ACUST UNITED AC 2008. [DOI: 10.1088/1742-6596/112/4/042014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Accidental whole-body overexposure of radiation occurs very rarely. Radiation exposure causes DNA breaks in the cells and shows various clinical features, which are time dependent, dose dependent and tissue dependent. Neutron rays are more destructive than gamma rays but their actual effect on humans have been under-reported. We observed the time-dependent and the dose-dependent dermatological changes in a patient who was severely irradiated by neutron and gamma rays, with the aim of clarifying the clinicopathological features of severely irradiated skin. The detection of DNA breaks in keratinocytes was performed by the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labelling technique. The degenerative changes of the skin and the re-epithelialization varied in a time dependent and dose dependent manner. DNA breaks were significantly higher in irradiated keratinocytes. Neutron rays caused depth-dependent degeneration of the skin. Evaluation of DNA breaks in the skin cells might be a clue to estimate local dosimetry.
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Affiliation(s)
- T Hoashi
- Department of Dermatology, Faculty of Medicine, University of Tokyo, and Kanto Central Hospital, Japan.
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Hoashi T, Okochi H, Kadono T, Tamaki K, Nishida M, Futami S, Maekawa K. A case of acute radiation syndrome from the dermatological aspect. Br J Dermatol 2008. [DOI: 10.1111/j.0007-0963.2007.08306.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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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Hoashi T, Okochi H, Kadono T, Tamaki K, Nishida M, Futami S, Maekawa K. A case of acute radiation syndrome from the dermatological aspect. Br J Dermatol 2007. [DOI: 10.1111/j.1365-2133.2007.08306.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ishida H, Higashijima N, Takahari Y, Egchi Y, Kadono T, Goto S. A novel real-time in vivo 3d confocal imaging system captures thrombus formation in mouse testicular artery. J Mol Cell Cardiol 2007. [DOI: 10.1016/j.yjmcc.2007.03.717] [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: 11/24/2022]
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40
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Minkov D, Yamada H, Toyosugi N, Yamaguchi T, Kadono T, Morita M. Theory and characteristics of transition radiation emitted by low-energy storage-ring synchrotrons for use in X-ray lithography. J Synchrotron Radiat 2006; 13:336-42. [PMID: 16799225 DOI: 10.1107/s0909049506015226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Accepted: 04/26/2006] [Indexed: 05/10/2023]
Abstract
Existing theory is developed further for description of transition radiation (TR) emitted by low-energy storage-ring synchrotrons. It takes into account the fact that the dielectric constant of the TR target material is a complex function, introduces an expression for the number of passes of an injected electron through the target, and accounts more precisely for the absorption of TR. It is shown that the consideration of the complexity of the dielectric constant results in notable changes of the TR spectrum for emitted photons with energies close to the ionization energies of the target material. Since such TR is used mostly for performing X-ray lithography (XRL), the sensitivity of the photoresist used in XRL is formulated. Maximization of this resist sensitivity can be used for designing optimum targets for XRL. Study of the transmission of TR through a commonly used XRL mask, and its partial absorption in a common photoresist, illustrates that TR emission with E = [490, 1860] eV is most useful for performing such XRL, while E approximately equal to 1 keV is best. It is shown that, for a particular target material, a target consisting of only one foil emits the most TR energy. Optimization of an Al target, based on maximization of the resist sensitivity, indicates that a target containing one Al foil with a thickness of about 200 nm would be best for performing XRL by our low-energy storage-ring synchrotron MIRRORCLE-20SX.
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Affiliation(s)
- D Minkov
- 21st Century COE SLLS, 1-1-1 Nojihigashi, Kusatsu-shi, Shiga 525-8577, Japan.
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41
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Saeki H, Tamada Y, Watanabe D, Akita Y, Matsumoto Y, Imai C, Kadono T, Maekawa T, Hattori N, Watanabe A, Torii H, Tamaki K. Analysis of gene mutations in four cases of dermatofibrosarcoma protuberans. Clin Exp Dermatol 2006; 31:441-4. [PMID: 16681596 DOI: 10.1111/j.1365-2230.2006.02097.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/30/2022]
Abstract
Fusion of the collagen type I alpha 1 (COL1A1) gene with the platelet-derived growth factor B-chain (PDGFB) gene has been described in dermatofibrosarcoma protuberans (DFSP). Various exons of the COL1A1 gene have been shown to be involved in the fusion with exon 2 of the PDGFB gene. We examined the breakpoints of the COL1A1 gene using the tumour specimens from four patients with DFSP. The COL1A1-PDGFB fusion transcripts were detected from the cultured tumour cells by reverse transcriptase polymerase chain reaction. Sequence analysis revealed that the ends of exons 23, 25, 26 and 36 in the COL1A1 gene were fused with the start of exon 2 in the PDGFB. This study identified three novel COL1A1 breakpoints: exons 23, 26 and 36 of the COL1A1 gene. In one case, the tumour was composed of two areas that differed in cytological atypia, cellularity and mitotic activity, indicating the dedifferentiation of the tumour. In tumour cells from two different areas the same aberrant fusion transcripts were identified. These results suggest that the dedifferentiation of tumour cells has nothing to do with the specific breakpoints of the COL1A1 gene, but depends on other unknown factors.
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Affiliation(s)
- H Saeki
- Aichi Medical University, Aichi, Japan.
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42
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Sugita S, Ootsubo T, Kadono T, Honda M, Sako S, Miyata T, Sakon I, Yamashita T, Kawakita H, Fujiwara H, Fujiyoshi T, Takato N, Fuse T, Watanabe J, Furusho R, Hasegawa S, Kasuga T, Sekiguchi T, Kinoshita D, Meech KJ, Wooden DH, Ip WH, A'Hearn MF. Subaru Telescope Observations of Deep Impact. Science 2005; 310:274-8. [PMID: 16166476 DOI: 10.1126/science.1119091] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The impact cratering process on a comet is controversial but holds the key for interpreting observations of the Deep Impact collision with comet 9P/Tempel 1. Mid-infrared data from the Cooled Mid-Infrared Camera and Spectrometer (COMICS) of the Subaru Telescope indicate that the large-scale dust plume ejected by the impact contained a large mass (approximately 10(6) kilograms) of dust and formed two wings approximately +/-45 degrees from the symmetric center, both consistent with gravity as the primary control on the impact and its immediate aftermath. The dust distribution in the inner part of the plume, however, is inconsistent with a pure gravity control and implies that evaporation and expansion of volatiles accelerated dust.
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Affiliation(s)
- S Sugita
- Department of Complexity Science and Engineering, University of Tokyo, Kashiwa, Chiba, Japan.
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Meech KJ, Ageorges N, A'Hearn MF, Arpigny C, Ates A, Aycock J, Bagnulo S, Bailey J, Barber R, Barrera L, Barrena R, Bauer JM, Belton MJS, Bensch F, Bhattacharya B, Biver N, Blake G, Bockelée-Morvan D, Boehnhardt H, Bonev BP, Bonev T, Buie MW, Burton MG, Butner HM, Cabanac R, Campbell R, Campins H, Capria MT, Carroll T, Chaffee F, Charnley SB, Cleis R, Coates A, Cochran A, Colom P, Conrad A, Coulson IM, Crovisier J, deBuizer J, Dekany R, de Léon J, Dello Russo N, Delsanti A, DiSanti M, Drummond J, Dundon L, Etzel PB, Farnham TL, Feldman P, Fernández YR, Filipovic MD, Fisher S, Fitzsimmons A, Fong D, Fugate R, Fujiwara H, Fujiyoshi T, Furusho R, Fuse T, Gibb E, Groussin O, Gulkis S, Gurwell M, Hadamcik E, Hainaut O, Harker D, Harrington D, Harwit M, Hasegawa S, Hergenrother CW, Hirst P, Hodapp K, Honda M, Howell ES, Hutsemékers D, Iono D, Ip WH, Jackson W, Jehin E, Jiang ZJ, Jones GH, Jones PA, Kadono T, Kamath UW, Käufl HU, Kasuga T, Kawakita H, Kelley MS, Kerber F, Kidger M, Kinoshita D, Knight M, Lara L, Larson SM, Lederer S, Lee CF, Levasseur-Regourd AC, Li JY, Li QS, Licandro J, Lin ZY, Lisse CM, LoCurto G, Lovell AJ, Lowry SC, Lyke J, Lynch D, Ma J, Magee-Sauer K, Maheswar G, Manfroid J, Marco O, Martin P, Melnick G, Miller S, Miyata T, Moriarty-Schieven GH, Moskovitz N, Mueller BEA, Mumma MJ, Muneer S, Neufeld DA, Ootsubo T, Osip D, Pandea SK, Pantin E, Paterno-Mahler R, Patten B, Penprase BE, Peck A, Petitas G, Pinilla-Alonso N, Pittichova J, Pompei E, Prabhu TP, Qi C, Rao R, Rauer H, Reitsema H, Rodgers SD, Rodriguez P, Ruane R, Ruch G, Rujopakarn W, Sahu DK, Sako S, Sakon I, Samarasinha N, Sarkissian JM, Saviane I, Schirmer M, Schultz P, Schulz R, Seitzer P, Sekiguchi T, Selman F, Serra-Ricart M, Sharp R, Snell RL, Snodgrass C, Stallard T, Stecklein G, Sterken C, Stüwe JA, Sugita S, Sumner M, Suntzeff N, Swaters R, Takakuwa S, Takato N, Thomas-Osip J, Thompson E, Tokunaga AT, Tozzi GP, Tran H, Troy M, Trujillo C, Van Cleve J, Vasundhara R, Vazquez R, Vilas F, Villanueva G, von Braun K, Vora P, Wainscoat RJ, Walsh K, Watanabe J, Weaver HA, Weaver W, Weiler M, Weissman PR, Welsh WF, Wilner D, Wolk S, Womack M, Wooden D, Woodney LM, Woodward C, Wu ZY, Wu JH, Yamashita T, Yang B, Yang YB, Yokogawa S, Zook AC, Zauderer A, Zhao X, Zhou X, Zucconi JM. Deep Impact: observations from a worldwide Earth-based campaign. Science 2005; 310:265-9. [PMID: 16150977 DOI: 10.1126/science.1118978] [Citation(s) in RCA: 158] [Impact Index Per Article: 8.3] [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: 11/02/2022]
Abstract
On 4 July 2005, many observatories around the world and in space observed the collision of Deep Impact with comet 9P/Tempel 1 or its aftermath. This was an unprecedented coordinated observational campaign. These data show that (i) there was new material after impact that was compositionally different from that seen before impact; (ii) the ratio of dust mass to gas mass in the ejecta was much larger than before impact; (iii) the new activity did not last more than a few days, and by 9 July the comet's behavior was indistinguishable from its pre-impact behavior; and (iv) there were interesting transient phenomena that may be correlated with cratering physics.
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Affiliation(s)
- K J Meech
- Institute for Astronomy, University of Hawaii at Manoa, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
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Kadono T, Sugiyama H, Hoshiai M, Osada M, Tan T, Naitoh A, Watanabe M, Koizumi K, Nakazawa S. Endothelial function evaluated by flow-mediated dilatation in pediatric vascular disease. Pediatr Cardiol 2005; 26:385-90. [PMID: 15633046 DOI: 10.1007/s00246-004-0755-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The endothelial function of children with and without vascular disease, consisting of 41 controls, 24 with Kawasaki disease (KD), and 46 with diabetes mellitus (DM), was examined. Age at examination ranged from 3 to 23 years (mean, 12.0 +/- 4.7). The flow-mediated dilatation (FMD) and intima-media complex in the common carotid artery were measured. In controls age at examination was not associated with FMD or intima-media complex. FMD significantly decreased in children with KD and DM compared with the control group (control vs KD or DM: 11.7 +/- 14.7 vs 3.0 +/- 11.0 or 6.4 +/- 8.5%, respectively; p < 0.05). However, there was no significant difference for intima-media complex among the groups. Furthermore, FMD in KD patients with coronary arterial aneurysm was lower than that in KD patients without aneurysm (-0.5 +/- 9.2 vs 8.3 +/- 9.1%, p < 0.05). In DM patients, FMD in the high HbA1c group (HbA1c = 7%) was lower than that in the normal HbA1c group (HbA1c < 7%) (4.8 +/- 8.1 vs 11.4 +/- 7.8%, p < 0.05). In conclusion, FMD detected endothelial impairment in children with KD or type 1 DM regardless of overt vascular complications, and FMD impairment occurs prior to intima-media complex thickening. By measuring both FMD and intima-media complex, useful information for predicting vascular complications may be obtained.
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Affiliation(s)
- T Kadono
- Department of Pediatrics, Faculty of Medicine, University of Yamanashi, 1110, Shimokato, 409-3898, Tamaho, Japan
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Mitsui H, Watanabe T, Jinnin M, Kadono T, Idezuki T, Tamaki K. Mucinous carcinoma of the skin could have either an eccrine or an apocrine origin. Br J Dermatol 2005; 151:1285-6. [PMID: 15606541 DOI: 10.1111/j.1365-2133.2004.06297.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kadono T, Kawano T, Hosoya H, Kosaka T. Flow cytometric studies of the host-regulated cell cycle in algae symbiotic with green paramecium. Protoplasma 2004; 223:133-141. [PMID: 15221518 DOI: 10.1007/s00709-004-0046-6] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Received: 09/05/2003] [Accepted: 01/26/2004] [Indexed: 05/24/2023]
Abstract
Paramecium bursaria (green paramecium) possesses endosymbiotically growing chlorella-like green algae. An aposymbiotic cell line of P. bursaria (MBw-1) was prepared from the green MB-1 strain with the herbicide paraquat. The SA-2 clone of symbiotic algae was employed to reinfect MBw-1 cells and thus a regreened cell line (MBr-1) was obtained. The regreened paramecia were used to study the impact of the host's growth status on the life cycle of the symbiotic algae. Firstly, the relationship between the timing of algal propagation and the host cell division was investigated by counting the algal cells in single host cells during and after the host cell division and also in the stationary phase. Secondly, the changes in the endogenous chlorophyll level, DNA content, and cell size in the symbiotic algae were monitored by flow cytometry and fluorescence microscopy. The number of algae was shown to be doubled prior to or during the host cell division and the algal population in the two daughter cells is maintained at constant level until the host cell cycle reenters the cytokinesis, suggesting that algal propagation and cell cycle are dependent on the host's cell cycle. During the host's stationary growth, unicellular algal vegetatives with low chlorophyll content were dominant. In contrast, complexes of algal cells called sporangia (containing 1-4 autospores) were present in the logarithmically growing hosts, indicating that algal cell division leading to the formation of sporangia with multiple autospores is active in the dividing paramecia.
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Affiliation(s)
- T Kadono
- Graduate School of Environmental Engineering, University of Kitakyushu, Wakamatsu-ku, 808-0135 Kitakyushu, Japan
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Sugiyama H, Komai T, Hoshiai M, Tan T, Kadono T, Suzuki S, Yoshii S, Nakazawa S. Mid-term outcome after partial left ventriculectomy in pediatric patients. Pediatr Cardiol 2003; 24:54-9. [PMID: 12399901 DOI: 10.1007/s00246-002-0126-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2001] [Accepted: 03/24/2002] [Indexed: 10/27/2022]
Abstract
From May 1998 to April 2000, we performed partial left ventriculectomy (PLV) in 3 pediatric patients with dilated cardiomyopathy (DCM). At the time of the surgery, their age ranged from eight months to three years. The first patient eventually had to receive a heart transplant, but all patients treated with PLV are alive to this day. Patient #1 was diagnosed with DCM at the age of five months, PLV was done on a semi-urgent basis at the age of eight months, when medium dose IV catecholamine therapy and mechanical ventilation were required. Fraction shortening (FS) as shown by echocardiography increased postoperatively from 8% to 15% along with marked clinical improvement. Her heart failure deteriorated three months after the surgery, and received a heart transplant in the United States when she was one year and two months old. Patient #2 developed severe heart failure two months after correction of a ventricular septal defect. Aggressive medical therapy failed to improve his condition, therefore PLV was done on an elective basis at the age of three years and five months. [The patient was initially hospitalized and underwent low dose catecholamine.] Postoperative course was well. The ventriculography one year after surgery showed an improvement of the left ventricular FS from 12% to 27% after PLV. He was still doing well at his most recent check up. Patient #3 was diagnosed with DCM as a neonate. PLV was done on an elective basis at the age of two years and five months. Her postoperative course was generally well. FS on echocardiography increased postoperatively from 10% to 25% along with marked clinical improvement. The timing of performing PLV is the most essential factor for postoperative course in our experiences. We consider that the best timing is when aggressive catecholamine infusion or mechanical ventilation is required. The mid-term outcome of PLV of pediatric patients is considered to be acceptable. We believe that PLV should be considered as a viable option for severe DCM patients.
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Affiliation(s)
- H Sugiyama
- Department of Pediatric, Yamanashi Medical University, 1,110, Shimokato, Tamaho, Nakakoma, Yamanashi, 409-3898, Japan
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Watanabe C, Inaoka T, Kadono T, Nagano M, Nakamura S, Ushijima K, Murayama N, Miyazaki K, Ohtsuka R. Males in rural Bangladeshi communities are more susceptible to chronic arsenic poisoning than females: analyses based on urinary arsenic. Environ Health Perspect 2001; 109:1265-70. [PMID: 11748034 PMCID: PMC1240509 DOI: 10.1289/ehp.011091265] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Spot urine samples were collected from the inhabitants of two rural communities in northwestern Bangladesh. We compared arsenic levels in the urine samples ([As](u); n = 346) with those in water from tube wells ([As](tw); range < 1-535 microg/L; n = 86) on an individual basis. The small variation of [As](u) within subjects and highly positive correlation with [As](tw) indicate that [As](u) is a useful indicator of exposure. Analyses of [As](u) showed that creatinine correction was necessary, that [As](u) only reflected recent exposure, and that there were substantial interindividual differences for a given [As](tw) level. To evaluate the toxic effects of arsenic exposure, we constructed a system for rating skin manifestations, which revealed distinct sex-related differences. Comparison of males and females in the same households confirmed that skin manifestations were more severe in the males, and in the males of one community a dose-response relationship between [As](u) and the degree of skin manifestation was evident. The results of this study indicate that [As](u) in spot urine samples can be used as an exposure indicator for As. They suggest that there might be sex-related, and perhaps community-related, differences in the relationship between [As](u) and skin manifestations, although several confounding factors, including sunlight exposure and smoking habits, might contribute to the observed sex difference. The existence of such differences should be further confirmed and examined in other populations to identify the subpopulations sensitive to chronic arsenic toxicity.
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Affiliation(s)
- C Watanabe
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
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Yoshii S, Suzuki S, Hosaka S, Osawa H, Takahashi W, Takizawa K, Abraham SJ, Tada Y, Sugiyama H, Tan T, Kadono T. A case of Uhl anomaly treated with one and a half ventricle repair combined with partial right ventriculectomy in infancy. J Thorac Cardiovasc Surg 2001; 122:1026-8. [PMID: 11689812 DOI: 10.1067/mtc.2001.116319] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- S Yoshii
- Department of Surgery, Yamanashi Medical University, Yamanashi, Japan.
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