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Periodontitis aggravates renal inflammatory response in a mouse model of renal fibrosis
Chao Bi1, Xiao-Lan Han1, Xue-Zhu Li2
1Department of Stomatology, First Affiliated Hospital, Anhui Medical University, Hefei, China.
Objectives:
To assess the effects of periodontitis on renal interstitial fibrosis in a mouse model.
Materials And Methods:
Thirty C57BL/6 male mice were divided into control, periodontitis (PD), unilateral ureteral ligation (UUO) and PD+UUO groups. Unilateral ureteral ligation was performed 6 days after periodontitis. After 2 weeks, all mice were sacrificed, and samples were collected for the assessment of gene expression, immune cells, biochemical indicators and renal pathology.
Results:
Expression of tumour necrosis factor-α, interleukin-1β, and Ly6G in the kidneys in the PD+UUO group was significantly greater than in the UUO group. The percentage of CD11b+ Ly6G+ cells was significantly higher in the PD+UUO than in the UUO group. Fibrotic areas in the kidneys in the PD+UUO group were slightly, but not significantly, greater than those in the UUO group. Kidneys from the PD+UUO group showed markedly higher gene expression of matrix metalloproteinase-9, but not α-smooth muscle actin or collagen I, than those in the UUO group. There were no significant differences in blood urea nitrogen, serum creatinine and uric acid between the PD+UUO and UUO groups.
Conclusions:
Periodontitis increases the renal inflammatory response without showing a significant influence on renal interstitial fibrosis or renal function in the UUO mouse model.
