[Objectives]The paper was to investigate the protective effect of Fufang Yatongding on experimental periodontitis in rats.[Methods]Experimental periodontitis rats were randomly divided into blank group(5 rats),model g...[Objectives]The paper was to investigate the protective effect of Fufang Yatongding on experimental periodontitis in rats.[Methods]Experimental periodontitis rats were randomly divided into blank group(5 rats),model group,control group and experimental group,with 8 rats in each group.The rats in the blank group were fed with normal diet,and those in the model group,control group and experimental group were administered intragastrically with normal saline,minocycline hydrochloride solution and Fufang Yatongding solution,respectively.After 4 weeks,alveolar bone resorption was measured.Serum matrix metalloproteinases(MMPs)and inflammatory factors were detected by ELISA,and the changes in gingival tissue were observed by HE staining.[Results]Compared with the control group,the distance from enamel cementum to alveolar crest in the experimental group was decreased(P<0.05).Compared with the control group,the levels of serum MMPs and inflammatory factors in the experimental group were decreased(P<0.05).The results of HE staining showed that the cells in the gingival tissue of rats in the blank group were normal in morphology and intact in structure,and the cells in the gingival tissue of rats in the model group were damaged and out of order,while the cells in the control group were slightly intact and arranged orderly,and the pathological damage of rats in the experimental group was less than that in the control group.[Conclusions]Fufang Yatongding has protective effect on experimental periodontitis in rats by inhibiting the release of MMPs and inflammatory factors.展开更多
Objective:To review treatment methods using natural extracts applied in rat models of periodontitis to establish a direction for the design of future experiments.Methods:An electronic search of PubMed was carried out ...Objective:To review treatment methods using natural extracts applied in rat models of periodontitis to establish a direction for the design of future experiments.Methods:An electronic search of PubMed was carried out using the keywords“periodontitis,”“natural”,“extracts”,“herb*”,“plants”and“rats.”Articles were screened against inclusion and exclusion criteria by two independent researchers.Data describing the characteristics of rats,method of periodontitis inducement,extract administration,and outcome measures were extracted and analyzed by more than two authors manually.Results:Of the 864 articles identified,33 studies were included.The use of SpragueeDawley rats(51.2%)and male rats(90.9%)was preferred.The most common experimental methods were ligature placement(72.7%)and oral administration(66.7%).Alveolar bone loss was evaluated mainly by photography(51.5%)and micro-computed tomography(39.4%).Factors related to bone remodeling and inflammatory processes,such as interleukin-1b,tumor necrosis factor-a,receptor activator of nuclear factor-kB,and osteoprotegerin,were also measured.Conclusion:Many diverse experimental periodontitis models have been used.However,few articles observed bone formation,immune responses,antibacterial effects,and toxicity.Future studies to assess natural extracts for the treatment of periodontitis should be robust and well-designed.展开更多
背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察F...背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察Foxp3在粪肠球菌感染的大鼠难治性根尖周炎病变中的表达情况。方法:6周龄SD大鼠32只,随机各挑选16只分成未封菌组和封菌组。将32只大鼠在无痛条件下行双侧下颌第1磨牙中央窝开髓,未封菌组放入PBS小棉球,封菌组放入粪肠球菌混悬液小棉球,随后在双侧内髓腔放置流动树脂后光固化。常规水食室温饲养,于1,2,3,4周两组各随机选取4只大鼠取下颌骨组织;并以0周大鼠未做开髓处理为空白对照组。用苏木精-伊红染色观察大鼠根尖周部位的炎症组织病理变化;RT-PCR和免疫组织化学检测根尖周组织Foxp3的表达变化。结果与结论:①苏木精-伊红染色显示:未封菌组、封菌组大鼠根尖周炎的动物模型均建立成功,根尖周围组织区域均可见到明显的炎性细胞的浸润;②RT-PCR结果显示:Foxp3在未封菌组根尖周组织区域的mRNA表达水平呈现1-4周逐步递增;封菌组根尖区组织Foxp3的mRNA表达水平在3周达到高峰后下降,在2,4周与未封菌组比较,差异有显著性意义(P<0.05);③免疫组织化学结果显示:未封菌组中Foxp3的阳性细胞表达量随着时间递增,封菌组在第3周表达高峰后第4周下降,与RT-PCR的结果一致(P<0.05);④结论:Foxp3参与慢性根尖周炎和难治性根尖周炎的进展过程;在炎症慢性期,Foxp3在难治性根尖周炎中表达明显降低,提示其可能与粪肠球菌有一定的关系。展开更多
基金Supported by Science and Technology Project of Ji’an City(2020-075)。
文摘[Objectives]The paper was to investigate the protective effect of Fufang Yatongding on experimental periodontitis in rats.[Methods]Experimental periodontitis rats were randomly divided into blank group(5 rats),model group,control group and experimental group,with 8 rats in each group.The rats in the blank group were fed with normal diet,and those in the model group,control group and experimental group were administered intragastrically with normal saline,minocycline hydrochloride solution and Fufang Yatongding solution,respectively.After 4 weeks,alveolar bone resorption was measured.Serum matrix metalloproteinases(MMPs)and inflammatory factors were detected by ELISA,and the changes in gingival tissue were observed by HE staining.[Results]Compared with the control group,the distance from enamel cementum to alveolar crest in the experimental group was decreased(P<0.05).Compared with the control group,the levels of serum MMPs and inflammatory factors in the experimental group were decreased(P<0.05).The results of HE staining showed that the cells in the gingival tissue of rats in the blank group were normal in morphology and intact in structure,and the cells in the gingival tissue of rats in the model group were damaged and out of order,while the cells in the control group were slightly intact and arranged orderly,and the pathological damage of rats in the experimental group was less than that in the control group.[Conclusions]Fufang Yatongding has protective effect on experimental periodontitis in rats by inhibiting the release of MMPs and inflammatory factors.
基金supported by Kyung Hee University(Seoul,Republic of Korea)in 2018(KHU-20180922).
文摘Objective:To review treatment methods using natural extracts applied in rat models of periodontitis to establish a direction for the design of future experiments.Methods:An electronic search of PubMed was carried out using the keywords“periodontitis,”“natural”,“extracts”,“herb*”,“plants”and“rats.”Articles were screened against inclusion and exclusion criteria by two independent researchers.Data describing the characteristics of rats,method of periodontitis inducement,extract administration,and outcome measures were extracted and analyzed by more than two authors manually.Results:Of the 864 articles identified,33 studies were included.The use of SpragueeDawley rats(51.2%)and male rats(90.9%)was preferred.The most common experimental methods were ligature placement(72.7%)and oral administration(66.7%).Alveolar bone loss was evaluated mainly by photography(51.5%)and micro-computed tomography(39.4%).Factors related to bone remodeling and inflammatory processes,such as interleukin-1b,tumor necrosis factor-a,receptor activator of nuclear factor-kB,and osteoprotegerin,were also measured.Conclusion:Many diverse experimental periodontitis models have been used.However,few articles observed bone formation,immune responses,antibacterial effects,and toxicity.Future studies to assess natural extracts for the treatment of periodontitis should be robust and well-designed.
文摘背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察Foxp3在粪肠球菌感染的大鼠难治性根尖周炎病变中的表达情况。方法:6周龄SD大鼠32只,随机各挑选16只分成未封菌组和封菌组。将32只大鼠在无痛条件下行双侧下颌第1磨牙中央窝开髓,未封菌组放入PBS小棉球,封菌组放入粪肠球菌混悬液小棉球,随后在双侧内髓腔放置流动树脂后光固化。常规水食室温饲养,于1,2,3,4周两组各随机选取4只大鼠取下颌骨组织;并以0周大鼠未做开髓处理为空白对照组。用苏木精-伊红染色观察大鼠根尖周部位的炎症组织病理变化;RT-PCR和免疫组织化学检测根尖周组织Foxp3的表达变化。结果与结论:①苏木精-伊红染色显示:未封菌组、封菌组大鼠根尖周炎的动物模型均建立成功,根尖周围组织区域均可见到明显的炎性细胞的浸润;②RT-PCR结果显示:Foxp3在未封菌组根尖周组织区域的mRNA表达水平呈现1-4周逐步递增;封菌组根尖区组织Foxp3的mRNA表达水平在3周达到高峰后下降,在2,4周与未封菌组比较,差异有显著性意义(P<0.05);③免疫组织化学结果显示:未封菌组中Foxp3的阳性细胞表达量随着时间递增,封菌组在第3周表达高峰后第4周下降,与RT-PCR的结果一致(P<0.05);④结论:Foxp3参与慢性根尖周炎和难治性根尖周炎的进展过程;在炎症慢性期,Foxp3在难治性根尖周炎中表达明显降低,提示其可能与粪肠球菌有一定的关系。
