Mast cells, cytokines, and metalloproteinases at the rheumatoid lesion: dual immunolocalisation studies.

Mast cells, cytokines, and metalloproteinases at the rheumatoid lesion: dual immunolocalisation studies.
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类风湿病变处的肥大细胞、细胞因子和金属蛋白酶:双重免疫定位研究。

DOI:
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发表时间:
1995
影响因子:
27.4
通讯作者:
D. Woolley
D. Woolley
中科院分区:
医学1区
文献类型:
--
作者:
L. Tetlow;D. Woolley

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目的--检查肥大细胞(MC)在类风湿性病变(软骨-血管翳连接处显示软骨侵蚀)中的分布和活化,并确定其组织分布是否与肿瘤坏死因子α(TNF α)、白细胞介素-1(IL-1)、基质溶解素-1和胶原酶相关。方法--MC-类胰蛋白酶的免疫定位用于鉴定35例软骨血管翳连接处标本中的MC及其脱颗粒状态。使用碱性磷酸酶和过氧化物酶结合抗体的双重免疫定位技术用于比较MC与促炎细胞因子TNF α和IL-1以及软骨或基质降解酶基质溶解素-1和胶原酶的分布。结果:基质溶解素-1,TNF α和IL-1 β在软骨-血管翳交界处尤为突出,尽管呈斑片状分布。细胞外MC类胰蛋白酶(指示MC活化/脱粒)通常在软骨侵蚀部位观察到,并且通常与TNF α、IL-1 β、基质溶解素-1和胶原酶的微环境表达相关。这些观察结果通常与局部组织水肿和间质破坏相关。结论--MC活化经常与邻近细胞的促炎细胞因子和金属蛋白酶表达相关,从而提示MC在介导类风湿性病变微病灶内基质降解和水肿变化中起重要作用。
OBJECTIVES--To examine the distribution and activation of mast cells (MCs) in the rheumatoid lesion (cartilage-pannus junctions demonstrating cartilage erosion), and to determine whether or not their tissue distribution is related to that for tumour necrosis factor alpha (TNF alpha), interleukin-1 (IL-1), stromelysin-1, and collagenase. METHODS--Immunolocalisation of MC-tryptase was used to identify MCs and their states of degranulation in 35 specimens of cartilage-pannus junctions. Dual immunolocalisation techniques using alkaline phosphatase and peroxidase conjugated antibodies were used to compare the distributions of MCs with the proinflammatory cytokines TNF alpha and IL-1, and the cartilage or matrix degrading enzymes stromelysin-1 and collagenase. RESULTS--Stromelysin-1, TNF alpha, and IL-1 beta were especially prominent at the cartilage-pannus junctions, albeit with patchy distributions. Extracellular MC tryptase, indicative of MC activation/degranulation, was commonly observed at sites of cartilage erosion, and was often associated with the microenvironmental expression of TNF alpha, IL-1 beta, stromelysin-1, and collagenase. Such observations were often associated with localised sites of tissue oedema and stromal disruption. CONCLUSION--MC activation was frequently associated with proinflammatory cytokine and metalloproteinase expression by neighbouring cells, thereby suggesting an important contributory role for the MC in mediating matrix degradation and oedematous changes within microfoci of the rheumatoid lesion.
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影响因子: --
作者:
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期刊: The New England journal of medicine
影响因子: --
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DOI: --
发表时间: 1992
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Murphy,M;Friend,DS;Pike-Nobile,L;Epstein,LB
通讯作者: Epstein,LB
大鼠肥大细胞蛋白酶 I 和 II 激活基质金属蛋白酶 1(间质胶原酶)和 3(基质溶解素)的前体。
DOI: 10.1042/bj3050301
发表时间: 1995
期刊: The Biochemical journal
影响因子: --
作者:
Suzuki,K;Lees,M;Newlands,GF;Nagase,H;Woolley,DE
通讯作者: Woolley,DE