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71.
Hironobu Shibata Masahiro Abe Kenji Hiura Javier Wilde Keiji Moriyama Toshiaki Sano Ken-Ichi Kitazoe Toshihiro Hashimoto Shuji Ozaki Shingo Wakatsuki Shinsuke Kido Daisuke Inoue Toshio Matsumoto 《Clinical cancer research》2005,11(17):6109-6115
PURPOSE: Receptor activator of nuclear factor-kappaB ligand (RANKL) is a key mediator of osteoclastogenesis. Because certain types of tumor cells aberrantly express RANKL, and because bone destruction also develops in B-cell lymphomas of bone origin, we investigated RANKL expression and the mechanisms of osteoclastogenesis in B-lymphoid neoplasms. EXPERIMENTAL DESIGN AND RESULTS: Immunohistochemistry of bone specimens resected from patients with primary B-cell lymphoma of bone with bone destruction revealed that lymphoma cells express RANKL as well as vascular endothelial cell growth factor (VEGF). The tumor cells isolated from the bone specimens enhanced osteoclastogenesis in vitro. In contrast, B-cell lymphoma infiltrating to the bone marrow without bone destruction did not express RANKL. Both RANKL and VEGF were expressed by a portion of B-lymphoid cell lines, including Daudi and IM-9. These RANKL-expressing tumor cells enhanced osteoclastogenesis from RAW264.7 cells and human monocyte-derived preosteoclasts in the absence of stromal cells/osteoblasts in a RANKL-dependent manner. Furthermore, conditioned media from Daudi cells enhanced transmigration of preosteoclasts that was inhibited by anti-VEGF antibody, suggesting that tumor cell-derived VEGF mediates recruitment of osteoclast precursors. Moreover, cocultures of B-lymphoid cell lines with osteoclasts enhanced the growth of B-lymphoid cells. CONCLUSIONS: Some malignant B cells aberrantly express functional RANKL as well as VEGF to enhance osteoclastogenesis. The coexpression of RANKL and VEGF may also contribute to the close cellular interactions with osteoclastic cells, thereby forming a vicious cycle between osteoclastic bone destruction and tumor expansion in bone. 相似文献
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Waardenburg syndrome type IIE in a Japanese patient caused by a novel non‐frame‐shift duplication mutation in the SOX10 gene 下载免费PDF全文
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Yu Seri Norio Hanata Yasuo Nagafuchi Shuji Sumitomo Keishi Fujio 《Modern rheumatology / the Japan Rheumatism Association》2017,27(4):696-698
A 59-year-old man who presented with continuous fever, livedo reticularis, and left leg ischemia with multiple tibial artery stenosis and renal artery aneurysm, as demonstrated by arteriography, was diagnosed with polyarteritis nodosa (PAN) 6 years ago. Although he frequently relapsed in spite of intensive immunosuppressive therapies, the disease activity of PAN was controlled with repeated rituximab (RTX) therapies and steroid doses were tapered safely. Peripheral CD19+ B-cells disappeared soon after the 1st administration of RTX. Although CD19+ B-cells remained absent, 3.1% of CD3+CD20+ T-cells were observed in the peripheral blood prior to the 2nd administration of RTX. Recent studies have suggested the pathogenic role of CD3+CD20+ T-cells in autoimmune diseases in the context of RTX therapy; therefore, their roles in the pathogenesis of PAN also need to be considered. 相似文献
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Periodontal disease and pneumonia mortality in haemodialysis patients: A 7‐year cohort study 下载免费PDF全文
Masanori Iwasaki George W. Taylor Shuji Awano Akihiro Yoshida Shota Kataoka Toshihiro Ansai Hidetoshi Nakamura 《Journal of clinical periodontology》2018,45(1):38-45