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[摘要]
目的 分析黄芪多糖对实验性牙周炎大鼠模型骨吸收的影响,评估黄芪多糖对牙槽骨炎性吸收的保护作用。方法 SD大鼠随机分为对照组、模型组、黄芪多糖(100、200、500 mg/kg)组。除对照组外,其余各组大鼠采用引菌法制备右上磨牙牙周炎模型,黄芪多糖组分别ig给予黄芪多糖100、200、500 mg/kg,对照组和模型组ig给予等量生理盐水。4周后处死大鼠,测量右上牙槽骨吸收状况及血清中白细胞介素-1β(IL-1β)、IL-6、肿瘤坏死因子-α(TNF-α)、核因子-κB受体活化因子配体(RANKL)、骨保护素(OPG)水平,同时测量血清总抗氧化态(TOS)、总还原态(TAS)水平,并计算氧化应激指数(OSI)。结果 随黄芪多糖剂量的增加,大鼠牙槽骨吸收量、TOS、OSI明显下降,TAS、RANKL、RANKL/OPG明显上升,差异显著(P<0.05);各组IL-1β、IL-6、TNF-α、OPG水平差异无显著性(P>0.05)。结论 黄芪多糖可通过下调OSI及RANKL/OPG抑制牙周炎性骨吸收。
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[Abstract]
Objective To analyze the effect of astragalus polysacharin (APC) on bone resorption in experimental periodontitis, and evaluate its protective function of inflammatory resorption of alveolar bone in periodontits. Methods SD rats were randomly divided into five equal groups:contorol group, model group, and APC low[LD:100 mg/(kg·d)], medium[MD:200 mg/(kg·d)], and high dose[HD:500 mg/(kg·d)] treatment groups. The periodontitis models were established through Porphyromonas gingivalis attracting. APC[LD:100 mg/(kg·d); MD:200 mg/(kg·d); HD:500 mg/(kg·d)] gavage was given to treatment groups, and the same amount of normal saline was given to control and model groups. The rats executed after four weeks, their CEJ-ABC distance (CAD) and expression of IL-1β, IL-6, TNF-α, TOS, TAS, RANKL, OPG in their serum was evaluated, and the oxidative stress index (OSI) was calculated. Results As APC amount increased, CAD, TOS, and OSI levels were declined significantly; While TAS, RANKL, RANKL/OPG levels were improved significantly; There was no significantly change on IL-1β, IL-6, TNF-α, and OPG levesl among groups. Conclusion APC prevents alveolar bone from oxidative stress and inflammatory damage by down-regulating OSI and RANKL/OPG.
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[基金项目]
吉林省中医药科技项目(2018127)