首页> 外文期刊>Journal of Neuroimmunology: Official Bulletin of the Research Committee on Neuroimmunology of the World Federation of Neurology >Differential effects of transforming growth factor-beta 1 on interleukin-1-induced cellular inflammation and vascular permeability in the rabbit retina.
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Differential effects of transforming growth factor-beta 1 on interleukin-1-induced cellular inflammation and vascular permeability in the rabbit retina.

机译:转化生长因子-β1对白细胞介素1诱导的兔视网膜细胞炎症和血管通透性的差异作用。

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摘要

Intra-vitreal injection of 300 U of interleukin (IL)-1 beta into the rabbit eye induces an inflammation of the retina characterized by hemorrhage, monocyte and neutrophil infiltration, and an increase in vascular permeability that peaks 24 h post-injection. Since the epiretinal vessels involved in this inflammation form part of the blood-retina barrier, we used this model to investigate the effects of the immunosuppressive cytokine TGF beta 1 on inflammation within the context of the central nervous system. We found that intra-vitreal injection of 1 microgram rh TGF beta administered concomitantly with rh IL-1 beta significantly reduced IL-1 beta-induced hemorrhage by 78%, and monocyte and neutrophil infiltration by 53% and 62%, respectively. In contrast, TGF beta did not reduce the IL-1 beta-induced increase in vascular permeability. However, TGF beta by itself caused a statistically significant increase in serum proteins in perfused tissues of the eye, to give a 3.1 +/- 0.4 fold increase in protein content over control values. No cellular inflammation accompanied this alteration in vascular permeability. These data indicate that whereas the local administration of TGF beta may be an effective inhibitor of cellular inflammation in the CNS, the effects on alterations in vascular permeability and accumulation of serum proteins may be more complex.
机译:向兔眼玻璃体内注射300 U白介素(IL)-1β会引起视网膜炎症,其特征在于出血,单核细胞和中性粒细胞浸润,以及血管渗透性增加,其在注射后24小时达到峰值。由于参与此炎症反应的前视网膜血管是血液-视网膜屏障的一部分,因此我们使用该模型研究了免疫抑制性细胞因子TGFβ1对中枢神经系统内炎症的影响。我们发现玻璃体内注射1微克rh TGFβ与rh IL-1β并用可显着减少IL-1β引起的出血78%,单核细胞和中性粒细胞浸润分别减少53%和62%。相反,TGF-β并未降低IL-1-β诱导的血管通透性增加。但是,TGFβ本身会引起眼睛灌注组织中血清蛋白的统计学显着增加,从而使蛋白质含量比对照值增加3.1 +/- 0.4倍。没有细胞炎症伴随血管渗透性的这种改变。这些数据表明,尽管局部施用TGF-β可能是中枢神经系统中细胞炎症的有效抑制剂,但对血管通透性变化和血清蛋白积累的影响可能更为复杂。

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