中国免疫学杂志2024，Vol.40Issue(6)：1131-1136,6.DOI:10.3969/j.issn.1000-484X.2024.06.003
大豆异黄酮抑制Slit2/MAPK信号通路对牙周炎大鼠牙槽骨吸收和炎症反应的影响
Impacts of soy isoflavones inhibiting Slit2/MAPK signaling pathway on alveolar bone resorption and inflammatory response in periodontitis rats
摘要
Abstract
Objective:To investigate impacts of soy isoflavones(SIF)on alveolar bone resorption and inflammatory response in periodontitis rats based on Slit homologue 2(Slit2)/P38 mitogen-activated protein kinase(MAPK)signaling pathway.Methods:Rats were separated into Control group,Model group,SIF low-dose group(L-SIF,25 mg/kg)and SIF high-dose group(H-SIF,75 mg/kg),with 10 rats per group,and periodontitis model was established by ligating necks of maxillary first molars of rats with silk thread except for control group.Rats in L-SIF group and H-SIF group were given corresponding doses of SIF by gavage,Control group and Model group were given same amount of normal saline by gavage,once a day,for 4 consecutive weeks.After administration,serum Slit2,TNF-α,IL-6 and IL-1β levels were detected by ELISA;Micro-CT scan was performed to detect distance between cemen-tumenamel junction and alveolar ridge crest(CEJ-ABC),bone mineral density(BMD),bone volume fraction(BV/TV),and alveolar bone loss was evaluated;HE staining and tartrate-resistant acid phosphatase(TRAP)staining were performed to evaluate tissue inflam-mation,bone resorption and osteoclast activity;expressions of osteoprotegerin(OPG)and receptor activator of nuclear factor κB ligand(RANKL)in periodontal tissues were detected by immunohistochemistry(IHC);Western blot was performed to detect protein expressions of Slit2,P38 MAPK and p-P38 MAPK in periodontal tissues.Results:Compared with Control group,serum levels of Slit2,TNF-α,IL-1β,IL-6,CEJ-ABC distance,periodontal histopathological damage score,osteoclast number,positive expression of RANKL,protein level of Slit2 and p-P38 MAPK/P38 MAPK were greatly increased in Model group,BMD,BV/TV and positive ex-pression of periodontal tissues OPG were greatly decreased(all P<0.05);compared with Model group,serum levels of Slit2,TNF-α,IL-1β,IL-6,CEJ-ABC distance,periodontal histopathological damage score,osteoclast number,positive expression of RANKL,pro-tein levels of Slit2 and p-P38 MAPK/P38 MAPK were greatly decreased,BMD,BV/TV and OPG positive expression of periodontal tissues were greatly increased in L-SIF group and H-SIF group(P<0.05),the above indicators in H-SIF group changed greatly better than L-SIF group(P<0.05).Conclusion:SIF can inhibit alveolar bone resorption and inflammatory response in periodontitis rats and improve periodontitis,whose mechanism may be related to inhibition of Slit2/P38 MAPK signaling pathway.关键词
大豆异黄酮/牙周炎/牙槽骨吸收/Slit同源物2/P38丝裂原活化蛋白激酶Key words
Soy isoflavones/Periodontitis/Alveolar bone resorption/Slit homolog 2/P38 mitogen-activated protein kinase分类
医药卫生引用本文复制引用
代喆颖,郭怡,刘阳,李汶嘉,周辉..大豆异黄酮抑制Slit2/MAPK信号通路对牙周炎大鼠牙槽骨吸收和炎症反应的影响[J].中国免疫学杂志,2024,40(6):1131-1136,6.基金项目
武汉市卫生和计划生育委员会科研项目(WX18C06). （WX18C06）
