中国实用口腔科杂志

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牙龈卟啉单胞菌PG0839基因对小鼠肝细胞和血清中IL-1β与IL-6表达影响研究

刘静波a林莉a张冬梅a李琛a潘亚萍a郭艳b   

  1. 作者单位:中国医科大学口腔医学院a牙周科,b中心实验室,辽宁省口腔医学研究所,沈阳110002
  • 出版日期:2014-12-15 发布日期:2015-01-04
  • 通讯作者: 潘亚萍
  • 基金资助:

    国家自然科学基金(81271153);辽宁省自然科学基金(2013021030)

Effect of PG0839 gene of Porphyromonas gingivalis on IL-1β and IL-6 in liver tissues and serum of mice.

LIU Jing-bo**, LIN LiZHANG Dong-meiLI ChenPAN Ya-pingGUO Yan   

  1. *Department of Periodontology,School of Stomatology,China Medical University & Liaoning Institute of Dental Research,Shenyang 110002,China
  • Online:2014-12-15 Published:2015-01-04

摘要:

目的 探讨牙龈卟啉单胞菌(Porphyromonas gingivalis,P.gingivalis)PG0839基因对小鼠肝细胞和血清中炎症因子白细胞介素1β(IL-1β)与白细胞介素6(IL-6)表达的影响,以期为进一步明确该基因的功能提供实验依据。方法 本研究于2013年6—12月在中国医科大学口腔医学院中心实验室完成。选择18~22 g SPF级昆明小鼠18只,适应性喂养1周后,随机分为3组,每组6只。组1为接种P.gingivalis W83菌株组,组2为接种P.gingivalis PG0839基因突变菌株组,组3为对照组。在组1、组2的每只小鼠背部皮下2个位点各注射浓度为1×109 CFU/mL的细菌悬液0.1 mL,组3的每只小鼠注射等量无菌PBS缓冲液。在细菌接种后5 d处死各组小鼠,留存肝组织及血清。使用双抗体夹心酶联免疫吸附(ELISA)法检测各组小鼠肝组织和血清中IL-1β与IL-6水平。应用SPSS 13.0统计软件对结果数据进行分析。结果 组2小鼠肝组织和血清中的IL-1β与IL-6表达显著低于组1小鼠(P<0.05);与组3小鼠相比,组1和组2小鼠肝组织和血清中IL-1β与IL-6表达均显著增加( P < 0. 05)。结论 PG0839基因可能参与P.gingivalis引发小鼠全身炎症的过程。

关键词: 牙龈卟啉单胞菌, 毒力岛, 白细胞介素1&beta, 白细胞介素6

Abstract:

Abstract:Objective To discuss the effect of PG0839 of Porphyromonas gingivalis (P.gingivalis) on inflammatory cytokine expression, including interleukin 1β and interleukin 6, in liver tissues and serum of mice. Methods The study was completed in the central laboratory of School of Stomatology, China Medical University from Jun. 2013 to Nov. 2013. Group 1 was challenged with P.gingivalis W83 strain at the doses of 1×109 CFU/ml cells. Group 2 was challenged with PG0839-defective mutant at the same dose. All mice in both groups were challenged with subcutaneous injections of 0.1 mL of bacterial suspension at two sites on the dorsal surface. Control group was challenged with 0.1 mL sterile PBS only. After 5 days, all mice were sacrificed, and the liver and serum were stored. The levels of IL-1β and IL-6 in mice liver tissue and serum were detected using ELISA. Analyze all result data with statistics software SPSS 13.0. Results IL-1β expression in the liver tissue and serum of mice was lower in group 2 than in group 1 (P < 0 05). Compared with the control group, IL-1β and IL-6 expressions in the liver tissue and serum of mice were significantly increased in group 1 and 2 (P < 0 05). Conclusion These results suggest that PG0839 may participate in the process of P.gingivalis inducing systemic inflammation in mice.

Key words: Porphyromonas gingivalis; pathogenicity islands;interleukin-1&beta, ;interleukin-6

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