华西口腔医学杂志

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伴放线放线杆菌对2型糖尿病患者多形核白细胞分泌白细胞介素-6和凋亡的影响

郑义1 马宁1 胡小燕2 张莉3   

  1. 1.吉林大学口腔医院牙周病科, 长春130021;2.山东大学医学院生物化学研究所, 济南250012;3.吉林大学口腔医院急诊科, 长春130021
  • 收稿日期:2011-06-25 修回日期:2011-06-25 出版日期:2011-06-20 发布日期:2011-06-20
  • 通讯作者: 马宁,Tel:0431-88796039
  • 作者简介:郑义(1983—),男,山东人,硕士
  • 基金资助:

    吉林省科技厅基金资助项目(20090437)

Effect of Actinobacillus actinomycetem on the secretion of interleukin-6 and apoptosis rate of polymorphonuclear leukocyte in type 2 diabetes patients

ZHENG Yi1, MA Ning1, HU Xiao-yan2, ZHANG Li3   

  1. 1. Dept. of Periodontology, Hospital of Stomatology, Jilin University, Changchun 130021, China; 2. Institute of Biochemistry, College of Medicine, Shandong University,Jinan 250012,China; 3. Dept. of Emergency, Hospital of Stomatology, Jilin University, Changchun 130021, China
  • Received:2011-06-25 Revised:2011-06-25 Online:2011-06-20 Published:2011-06-20
  • Contact: MA Ning,Tel:0431-88796039

摘要:

目的研究2型糖尿病患者多形核白细胞(PMN)分泌功能和凋亡情况以及伴放线放线杆菌(A.actinomycetem)对其的影响。方法Percoll不连续梯度离心法分离非糖尿病者和2型糖尿病患者外周血中的PMN,实验组的PMN加入A.actinomycetem的超声滤液刺激,对照组为PMN的PBS悬浮液。培养20、40、60 min后定量酶联免疫吸附试验(ELISA)检测其白细胞介素-6(IL-6)的分泌水平;另外在培养6、12 h后使用流式细胞分析仪检测各组PMN的凋亡率。结果糖尿病患者的PMN无论是否受到A.actinomycetem超声滤液刺激,在实验各个时段的IL-6分泌水平均高于非糖尿病者,且细胞凋亡率明显降低(P<0.001)。结论2型糖尿病患者的PMN具有过度炎症反应特征,在受到牙周致病菌刺激后,凋亡推迟,分泌炎症介质,从而造成严重的牙周组织破坏。

关键词: 2型糖尿病, 多形核白细胞, 白细胞介素-6, 细胞凋亡

Abstract:

Objective To study the effect of Actinobacillus actinomycetem(A.actinomycetem) on the secretion and apoptosis rate of polymorphonuclear leukocytes(PMN) in type 2 diabetes patients. Methods Peripheral PMN from healths and type 2 diabetes patients were isolated by Percoll gradient centrifugation. The PMN were stimulated with filtrate of ultrasonic pulverization from  .actinomycetem as the experiment group. As the control group, PMN suspension was incubated with PBS. The release of interleukin-6(IL-6) was measured at 20, 40, 60 min by enzymelinked immune sorbent assay(ELISA) technique. The apoptosis rate of PMN was tested at 6 and 12 hours by flow cytometry. Results Incubated with filtrate of ultrasonic pulverization from A.actinomycetem, the PMN of type 2 diabetes patients released  significantly higher levels of IL-6 compared with the healthy subjects(P<0.001). The apoptosis rate of PMN from the healthy subjects was higher than that from type 2 diabetes patients(P<0.001). Regardless of body condition, interaction with filtrate of ultrasonic pulverization from A.actinomycetem could induce the seretion of IL-6 and reduce the apoptosis rate. Conclusion The PMN of type 2 diabetes patients may possess hyper-reactive inflammatory response trait.

Key words: type 2 diabetes, polymorphonuclear leukocyte, interleukin-6, cell apoptosis