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首页> 外文期刊>Journal of Cellular Physiology >Amelioration of inflammation, angiogenesis and CTGF expression in an arthritis model by a TSP1-derived peptide treatment.
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Amelioration of inflammation, angiogenesis and CTGF expression in an arthritis model by a TSP1-derived peptide treatment.

机译:改善炎症,血管生成和CTGF表达在关节炎模型TSP1-derived肽治疗。

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OBJECTIVE: To evaluate the effect of a thrombospondin 1 (TSP1)-derived peptide on inflammation and angiogenesis in an animal model of erosive arthritis and to assess the relationship between TSP1 and connective tissue growth factor (CTGF) in the pathophysiology of rheumatoid arthritis. METHODS: Erosive arthritis in Lewis rats was induced by peptidoglycan-polysaccharide (PG-PS). Animals were divided into four groups: (1) negative control and groups receiving, (2) no treatment, (3) treatment with a TSP1-derived peptide, and (4) treatment with a scrambled peptide. Samples obtained from ankle joint, spleen and liver were studied using histology, histomorphometry, immunohistochemistry and RT-PCR. RESULTS: Histological data indicated that the TSP1-derived peptide treatment decreased neovascularization, leukocyte infiltration and thickening of the synovial lining of the joint, and reduced granuloma formation in the spleen and liver when compared to control groups. Higher concentrations of CTGF and TSP1 proteins were observed in the affected areas of animals which did not receive TSP1-derived peptide treatment. Also, immunofluorescence and RT-PCR analyses showed an increase in CTGF protein expression and regulation, respectively, in the tissues of untreated animals when compared to the TSP1-derived peptide treated animals. By immunofluorescence, TSP1 expression was decreased in the TSP1-derived peptide treated animals. Moreover, macrophage/monocyte-specific staining revealed a decrease in cell infiltration in the articular tissue of the TSP1-derived peptide treated animals. CONCLUSION: Both inflammation and angiogenesis were decreased after TSP1-derived peptide treatment indicating a potential pathway by which TSP1 interaction with neutrophils induces CTGF in RA affected tissues.
机译:摘要目的:评价的影响血小板反应蛋白1(常会)衍生肽炎症和血管生成在动物模型腐蚀性的关节炎和评估常会和结缔组织之间的关系生长因子(CTGF)的病理生理学类风湿性关节炎。在刘易斯老鼠被诱导peptidoglycan-polysaccharide (PG-PS)。被分成四组:(1)负的控制和组接收,(2)不治疗,(3)治疗TSP1-derived肽,(4)炒肽治疗。从踝关节、脾脏和肝脏研究利用组织学、histomorphometry免疫组织化学和rt - pcr。组织数据显示,TSP1-derived肽治疗减少新血管形成,白细胞浸润和增厚关节滑膜衬里,减少在脾脏和肝脏肉芽肿形成与对照组相比。CTGF和常会蛋白质被观察到受影响地区的动物没有收到TSP1-derived肽治疗。免疫荧光和rt - pcr分析显示增加CTGF蛋白表达分别监管的组织未经处理的动物相比TSP1-derived肽治疗的动物。免疫荧光,常会表达减少在TSP1-derived肽治疗的动物。此外,巨噬细胞/ monocyte-specific染色揭示了细胞浸润减少TSP1-derived肽的关节组织对待动物。和血管生成减少表明TSP1-derived肽治疗常会交互的潜在途径中性粒细胞诱导CTGF在RA影响组织。

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