J Endod:尖周损伤的环氧化酶2和肿瘤坏死因子α的检测

2019-01-19 lishiting MedSci原创

这篇研究的目的是为了评估根尖周肉芽肿(PG)和根尖周囊肿(RC)样本中环氧化酶2(COX-2)和肿瘤坏死因子α (TNF-α)的表达以及其与损伤类型、炎症浸润的程度和上皮层厚度之间的关系。

这篇研究的目的是为了评估根尖周肉芽肿(PG)和根尖周囊肿(RC)样本中环氧化酶2(COX-2)和肿瘤坏死因子α (TNF-α)的表达以及其与损伤类型、炎症浸润的程度和上皮层厚度之间的关系。

研究对51例根尖周损伤的病例(25 PGs and 26 RCs)进行形态学观察和免疫组织化学分析。采用anti-COX-2和anti-TNF-α抗体进行过氧化物免疫酶标记。数据通过Mann-Whitney检验, Pearson chi-square检验, Fisher exact检验和Spearman correlation进行统计学评估。

炎症浸润结果分析显示,与RCs的19%相比,PGs炎症浸润程度为80% (P < .001)。对RCs上皮厚度的形态学分析显示,73%的病例存在上皮萎缩。大多数PGs的COX-2免疫表达评分为1 (n = 14, 54%),TNF-α的表达为2 (n = 16, 64%),而RCs病例中COX-2和TNF-α的表达更多的为1 (n = 17, 65%)。尖周损伤中COX-2和TNF-α的表达评分具有显著性差异(P < .001)。

结论:基于以上结果,RCs和PGs中炎症因子(COX-2 and TNF-α)具有相似的表达,尽管PGs中巨噬细胞分泌的TNF-α和多细胞分泌的COX-2更高些。结果表明,在这些损伤中存在着较强的炎症反应。

原始出处:

Álvares PR, de Arruda JAA, et al. Immunohistochemical Analysis of Cyclooxygenase-2 and Tumor Necrosis Factor Alpha in Periapical Lesions. J Endod. 2018 Dec;44(12):1783-1787. doi: 10.1016/j.joen.2018.09.002.

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    2019-04-04 贪吃蛇大王

    好好学习天天向上

    0

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    2019-01-25 jyzxjiangqin

    尖周损伤的环氧化酶。

    0

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    2019-01-21 millore
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    2019-01-20 jyzxjiangqin

    尖周损伤的环氧化酶。

    0

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    2019-01-20 yjs木玉

    好好好好好好好好

    0

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本研究旨在探讨脐带间充质干细胞(UC-MSC)移植对胶原诱导性关节炎(CIA)小鼠关节损伤和骨质疏松症的影响,并探讨UC-MSCs调节成骨分化的机制。 将CIA小鼠分为以下处理组:UC-MSC移植组,抗肿瘤坏死因子(TNF-α)组和唑来膦酸(ZA)组。使用微型计算机断层扫描(micro-CT)分析骨形态学参数。测定处理的CIA小鼠的成骨分化。在体外使用TNF-α处理来自CIA小鼠的骨髓间充质干细胞

J Periodontol:患牙龈炎的肥胖儿童龈沟液、唾液抵抗素和肿瘤坏死因子-α水平的研究

本研究旨在评估患牙龈炎的肥胖儿童龈沟液(GCF)和唾液中抵抗素和肿瘤坏死因子-α(TNF-α)的水平。

J Periodontal Res:肿瘤坏死因子-α通过激活核因子-kappaB信号通路下调EphB 4信号通路抑制成骨细胞成骨分化

大多数实验表明肿瘤坏死因子-α(TNF-α)通过激活核因子-κB(NF-κB)信号传导抑制间充质干细胞和前成骨细胞的成骨分化。然而,NF-κB信号抑制成骨分化的潜在机制尚不完全清楚。本研究的目的是调查EphB4信号抑制是否介导TNF-α激活的NF-κB信号传导对成骨细胞成骨分化的影响。