Journal of Jilin University(Medicine Edition) ›› 2020, Vol. 46 ›› Issue (04): 733-738.doi: 10.13481/j.1671-587x.20200411

• Research in basic medicine • Previous Articles    

Effect of probiotics on expression of IL-17 in periodontal tissue of estrogen-deficient mice induced by ovariectomy and its significance

HUANG Jiangyong1, LI Chanxiu2, ZHENG Zhichao1, WANG Hongjuan3, GUO Lyuhua1, WU Zhe1, LUO Tao1   

  1. 1. Department of Prosthodontics, Affiliated Stomatology Hospital, Guangzhou Medical University, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Guangzhou 510140, China;
    2. Department of Stomatology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510055, China;
    3. Shenzhen Health Time Gene Company, Shenzhen 518000, China
  • Received:2020-02-25 Published:2020-08-20

Abstract: Objective: To explore the effect of probiotic feeding on the interleukin-17 (IL-17) expression in periodontal tissue of the estrogen-deficient mice, and to elucidate the possible mechanism of the correlation between estrogen deficiency and the periodontitis susceptibility. Methods: A total of 15 female C57BL/J6 mice(8-week-old) were randomly divided into sham operation group, ovariectomy group and probiotics group (probiotics feeding after ovariectomy) (n=5). The bone mineral densities(BMD) of the mice in various groups before and after experiment were measured by mean bone density measurement technique and the IL-17 mRNA expression levels in bone marrow cells and gingiva tissus of the mice were determined by RT-qPCR. The percentages of Th17 cells in CD4+TCRβ+ B cells in bone marrow of the mice were measured by flow cytometry. Results: Compared with sham operation group, the BMD of femur of the mice in OVX group was significantly decreased (P<0.01), the expression levels of IL-17 mRNA in bone marrow cells and gingiva tissue were increased (P<0.01), and the percentage of CD4+TCRβ+Th17 cells in the bone marrow was increased(P<0.05).Compared with OVX group, the BMD of femur of the mice in probiotics group was significantly increased (P<0.01), the expression levels of IL-17 mRNA in bone marrow cells and gingiva tissue were decreased (P<0.01), and the percentage of CD4+TCRβ+Th17 cells in the bone marrow was decreased(P<0.05).Compared with sham operation group, the BMD of femur, the expression levels of IL-17 mRNA in bone marrow cells and gingiva tissue, and the percentage of CD4+TCRβ+Th17 cells in the bone marrow in probiotics group had no significant differences (P>0.05). Conclusion: Probiotics feeding can inhibit the upregulation of IL-17 mRNA level of the mice induced by estrogen deficiency, and has the preventive effect on the estrogen deficiency-induced periodontitis.

Key words: estrogen deficiency, probiotic, interleukin-17, T helper cell 17, periodontitis

CLC Number: 

  • R781.4