首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
??Objective    To investigate whether local injection of periodontal ligament cells which were transfected by human β defensin 3 gene and then treated with gold nanoparticles can affect the chronic periodontitis progress in SD rats. Methods    Chronic periodontitis model was established by silk thread ligation. Periodontal ligament cells were cultured by enzyme digestion method and then identified. Cells after transfection and gold nanoparticles treatment were injected into the palatal gingival tissues after ligation. The control groups were injected with normal saline or cells transfected by empty vector adenovirus respectively. After 2 weeks??rats were executed and sampled. Micro-CT and immunohistochemical staining were performed to observe the chronic periodontitis progress in SD rats. Results    In ligation group??the alveolar bone around second molars was obviously absorbed??the gingival epithelial spikes hyperplasia and thickened stratum spinosum could also be observed??so did the inflammatory cell infiltration??altered and broken collagen fibers. Local injection of periodontal ligament cells which were transfected by human β defensin 3 gene and then treated with gold nanoparticles could significantly reduce the absorption of alveolar bone in the ligation area and increase the bone mineral density as well as bone volume fraction. It could also decrease inflammatory cells and epithelial spikes hyperplasia in the gingival epithelium. Furthermore??situation of altered and broken collagen fiber could be improved in those groups. Conclusion    Local injection of periodontal ligament cells transfected by human β defensin 3 gene and treated by gold nanoparticles can alleviate the inflammatory reaction and thus play a protective role in the progress of chronic periodontitis in SD rats.  相似文献   

2.
目的 评价不同程序牙周基础治疗对慢性牙周炎伴继发性咬合创伤牙位龈沟液(GCF)中白细胞介素-1β(IL-1β)、核因子-κb受体活化因子配体(RANKL)-骨保护蛋白(OPG)系统的影响。方法 收集2012年7月至2013年10月在海军总医院口腔科就诊的中、重度慢性牙周炎合并继发性咬合创伤患者21例纳入研究,分层区组随机分为A、B两组。研究结束时18例患者纳入分析:其中A组9例,咬合创伤牙位共计18颗,包括9颗前牙及9颗前磨牙;B组9例,咬合创伤牙位共计18颗,包括7颗前牙及11颗前磨牙。基线时,A组先实施全口龈下刮治术+根面平整(SRP)治疗,B组实施咬合创伤牙位咬合调整治疗;第28天,A组接受咬合创伤牙位咬合调整治疗,B组接受全口SRP治疗。其中,咬合调整治疗在T-ScanⅢ型咬合分析系统指导下完成。采用ELISA法检测两组基线、第28天和第56天咬合创伤牙位GCF中IL-1β、RANKL、OPG水平。两组组内SRP治疗前后、咬合调整前后咬合创伤牙位GCF中IL-1β、RANKL、OPG水平变化比较采用配对t检验;两组咬合创伤牙位GCF中IL-1β水平在第28、56天时比较采用协方差分析。结果 SRP治疗后两组咬合创伤牙位GCF中IL-1β水平降低,RANKL/OPG比值升高,与SRP治疗前相比差异有统计学意义(P<0.05);咬合调整治疗后两组咬合创伤牙位GCF中IL-1β水平、RANKL/OPG比值降低,与咬合调整治疗前相比差异有统计学意义(P<0.05)。结论 咬合调整治疗可降低慢性牙周炎伴继发性咬合创伤牙位GCF中IL-1β水平及RANKL/OPG比值,提示咬合调整治疗可能有助于抑制牙周骨组织破坏。  相似文献   

3.
??Abstract??Objective To discuss the effect of PG0839 of Porphyromonas gingivalis ??P.gingivalis?? on inflammatory cytokine expression?? including interleukin 1β and interleukin 6?? in liver tissues and serum of mice. Methods The study was completed in the central laboratory of School of Stomatology?? China Medical University from Jun. 2013 to Nov. 2013. Group 1 was challenged with P.gingivalis W83 strain at the doses of 1×109 CFU/ml cells. Group 2 was challenged with PG0839-defective mutant at the same dose. All mice in both groups were challenged with subcutaneous injections of 0.1 mL of bacterial suspension at two sites on the dorsal surface. Control group was challenged with 0.1 mL sterile PBS only. After 5 days?? all mice were sacrificed?? and the liver and serum were stored. The levels of IL-1β and IL-6 in mice liver tissue and serum were detected using ELISA. Analyze all result data with statistics software SPSS 13.0. Results IL-1β expression in the liver tissue and serum of mice was lower in group 2 than in group 1 ??P < 0 05??. Compared with the control group?? IL-1β and IL-6 expressions in the liver tissue and serum of mice were significantly increased in group 1 and 2 ??P < 0 05??. Conclusion These results suggest that PG0839 may participate in the process of P.gingivalis inducing systemic inflammation in mice.  相似文献   

4.
目的 探讨双氯芬酸钠对脂多糖(LPS)诱导的人牙周膜成纤维细胞(HPDLFs)白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)表达的影响。方法 本研究于2013年3—5月在山西医科大学口腔实验室进行。将复苏培养冻存的HPDLFs进行形态学鉴别后,用10 μg/mL的LPS进行诱导,分别以0.1、1、10、50、100 mg/L的双氯芬酸钠进行干预,酶联免疫吸附试验法(ELISA法)检测HPDLFs表达IL-1β和TNF-α水平的变化。结果 对同一质量浓度LPS诱导的HPDLFs而言,双氯芬酸钠能下调HPDLFs表达IL-1β和TNF-α的水平,并且随着双氯芬酸钠质量浓度的增加,IL-1β和TNF-α的表达量呈逐渐减弱的趋势(P<0.05)。结论 双氯芬酸钠可能对于LPS诱导的HPDLFs IL-1β和TNF-α的表达有重要的抑制作用,这为牙周病的临床治疗提供了新的思路。  相似文献   

5.
目的研究颞下颌关节(TMJ)中β连环蛋白(β-catenin)的表达分布特点以及在TMJ发育中的变化。方法合法收集2005—2006年华西医科大学附属第二医院流产胎儿4个,其中3个月和6个月胚胎各2个。用免疫组化法检测3个月和6个月人胚胎TMJ中β-catenin的表达分布。结果β-catenin在发育中的TMJ髁状突和关节盘软骨细胞中均有表达,在髁状突软骨各层及部分成熟骨细胞的细胞核中均可见阳性表达。结论β-catenin参与TMJ关节软骨与骨的形成,还可能与其他因子共同作用于TMJ发育的各个过程。  相似文献   

6.
目的 通过免疫组化法检测正常和实验性根尖周炎进展过程中根尖周组织整合素β1表达的分布情况及规律,探讨其在根尖周组织炎症进展中的作用。方法 取磨牙牙髓暴露不同时间(0、7、14、21、28 d)的大鼠上颌骨行整合素β1免疫组化染色,观察根尖周组织中整合素β1表达部位与表达程度。结果 整合素β1广泛表达于正常大鼠根尖周组织;牙髓暴露7~21 d,根尖周结缔组织中整合素β1呈阳性至强阳性表达,炎细胞密集区可见深棕色颗粒集聚;牙髓暴露28 d,根尖周结缔组织中整合素β1表达较弱。牙槽骨内的骨细胞、陷窝内血管、成骨细胞、破骨细胞及牙骨质细胞中整合素β1在牙髓暴露0~14 d呈强阳性表达,21 d后表达减弱。结论 整合素β1参与根尖周炎症的进展与根尖周肉芽组织形成炎症早期的骨吸收。  相似文献   

7.
??Objective    To discuss the influence of basic periodontal therapy on the level of IL-8?? IL-10 in serum and gingival crevicular fluid in patients who have chronic periodontitis complicated by coronary heart disease. Methods     A total of 65 cases of patients with chronic periodontitis complicated by coronary heart disease were selected and divided into two groups randomly??Group A of 35 patients who received the basic periodontal therapy and cardiac medical treatment??Group B of 30 patients who received cardiological treatment only. Then??select 25 patient who had developed chronic severe periodontitis with non-systematic disease to establish group C and give them the basic periodontal therapy only. Observe the changes of the IL-8??IL-10 levels in serum and gingival crevicular fluid and the periodontal infection indexes??BI??PD??. Results    The results showed that after three months of basic periodontal therapy the periodontal clinical indices of both group A and group C became better and the IL-8 level obviously reduced??while the IL-10 level obviously increased. There was no obvious difference between group A and group B in each examination index before the therapy. After three months??we found that the periodontal infection index??SBI PD??of group A was obviously better than group B. Compared to group B??the IL-8 level of group A obviously reduced??and the IL-10 level obviously increased. The difference was statistically significant??P < 0.05??. Conclusion    The basic periodontal therapy can effectively improve periodontal conditions of the patients with chronic periodontal diseases??and reduce the risk of breaking the normal cardiovascular function.  相似文献   

8.
??Objective    To investigate the expression level of human β-defensin -1??-2 and -3 in OSCC and its relationship with clinical TNM staging. Methods    Immunohistochemical staining was adopted to test the expression of hBDs in OSCC tissues. The stain grades were evaluated to represent the expression levels. The correlations between the staining grades of hBD-1??-2 and -3 were statistically analyzed and the correlations between the staining grades of hBDs and the TNM stages of OSCC were further analyzed. Results    There was a significantly positive correlation between the staining grade of hBD-1 and that of hBD-3 ??P < 0.01??. There was a significantly negative correlation between the staining grades of hBD-3 and the TNM stages ??P < 0.05??. Conclusion    The expression levels of human β-defensin -1??-2 and -3 in OSCC influence each other??suggesting that the expression livel of hBD-3 is related to the clinical staging of OSCC. The expression level of hBD-3 in OSCC could decrease along with the increasing TNM stage.  相似文献   

9.
牙周状况、血清白细胞介素-1β水平与妊娠关系初探   总被引:3,自引:0,他引:3  
目的探讨牙周状况、血清白细胞介素- 1β(IL- 1β)水平与妊娠间的关系。方法以40例先兆早产孕妇(TPL组)和40例正常孕妇(Non- TPL组)为研究对象,检查全口牙齿的牙周状况,记录菌斑指数(PLI)、探诊深度、临床附着丧失和出血指数(BI),并计算牙周炎位点率。酶联免疫吸附试验检测血清IL- 1β水平。对各项检查指标进行统计分析。结果①TPL组40例孕妇中26例足月产(TPL- TB小组),14例早产(TPL- PB小组);Non- TPL组40例孕妇皆足月产。TPL组和Non- TPL组、TPL- TB小组和TPL- PB小组的分娩孕周、新生儿出生体重、PLI、牙周炎位点率和血清IL- 1β水平间的差异均有统计学意义(P<0.05)。②分娩孕周和牙周炎位点率、BI、IL- 1β水平呈负相关(P<0.05),IL- 1β水平与牙周炎位点率和BI呈正相关(P<0.05)。结论牙周感染可能是早产的原因之一。  相似文献   

10.
目的探讨核转录因子一KB(NF—KB)/抑制因子KB(IKB)信号通路在调控牙龈卟啉单胞菌(Pgingivalis)感染诱导血管内皮细胞细胞间黏附分子-1(ICAM-1)高表达过程中的作用。方法本研究于2008年3月至2011年1月在中国医科大学中心实验室及中国医科大学口腔医学院中心实验室进行。已知P.gingivalis感染血管内皮细胞可诱导其ICAM-1基因和蛋白表达增高。采用Real-timePCR和Westernblot法检测P.gingivalis感染后血管内皮细胞ICAM-1mRNA和蛋白表达;应用5、10、20μmol/L的蛋白酶体抑制剂MGl32分别预处理血管内皮细胞15、30、60min,再将细胞与P.gingivalis共同培养8h,观察细胞ICAM-1mRNA和蛋白表达的变化,分析NF—KB/IKB信号通路对ICAM-1表达的调控作用。结果10txmol/LMGl32预处理30rain,Pgirtgivalis感染的血管内皮细胞ICAM—lmRNA表达具有下降趋势;20p~mol/LMGl32预处理15min,P.gingivalis感染的血管内皮细胞ICAM-1表达即开始下降,预处理时间延长至30、60min,ICAM-1表达下降更趋明显。结论阻断NF—KB/IKB信号通路可抑制P.gingivalis感染诱导的血管内皮细胞ICAM-1表达。  相似文献   

11.
??Objective    To discuss the influence of glycogen synthase kinase-3β??GSK-3β??on osteogenesis of jaw bone marrow mesenchymal stem cells??JBMMSCs?? in inflammatory microenvironment. Methods    Use shRNA to knock down the expression of GSK-3β in JBMMSCs. IL-1β and TNF-α were used to mimic inflammatory microenvironment. After osteogenesis??Western Blot was used to detect osteogenesis-related protein expression and Alizarin Staining was used to detect the efficiency of osteogenesis in different groups. Results    Expression of osteogenesis-related protein and efficiency of osteogenesis was highly up-regulated after knocking-down of GSK-3β in JBMMSCs. Inflammatory microenvironment could significantly down-regulate the expression of osteogenesis-related protein and efficiency of osteogenesis in ordinary JBMMSCs??while knocking-down GSK-3β could attenuate this effect. Conclusion    Knocking-down of GSK-3β in JBMMSCs can both increase the efficiency of osteogenesis and resist the adverse effect of inflammatory microenvironment on osteogenesis??thus GSK-3β is a potential target for improving the regeneration in inflammatory microenvironment.  相似文献   

12.
目的    通过免疫组化法检测正常和实验性根尖周炎进展过程中根尖周组织整合素β1表达的分布情况及规律,探讨其在根尖周组织炎症进展中的作用。方法    取磨牙牙髓暴露不同时间(0、7、14、21、28 d)的大鼠上颌骨行整合素β1免疫组化染色,观察根尖周组织中整合素β1表达部位与表达程度。结果    整合素β1广泛表达于正常大鼠根尖周组织;牙髓暴露7 ~ 21 d,根尖周结缔组织中整合素β1呈阳性至强阳性表达,炎细胞密集区可见深棕色颗粒集聚;牙髓暴露28 d,根尖周结缔组织中整合素β1表达较弱。牙槽骨内的骨细胞、陷窝内血管、成骨细胞、破骨细胞及牙骨质细胞中整合素β1在牙髓暴露0 ~ 14 d 呈强阳性表达,21 d后表达减弱。结论    整合素β1参与根尖周炎症的进展与根尖周肉芽组织形成炎症早期的骨吸收。  相似文献   

13.
目的观察老年颌面外科手术患者全身麻醉后术后谵妄(PD)的患病率,研究血浆β淀粉样蛋白1-40(Aβ1-40)与PD的关系。方法选择50例颌面外科手术患者,按照年龄分为T组(30例,年龄62~78岁)和C组(20例,年龄20~60岁),2组均采用静吸复合麻醉,以谵妄评定量表1998年修订版(DRS-R-98)来诊断和评估PD发生状况,记录术前(T0),术后24 h(T1)、48 h(T2)、72 h(T3)、96 h(T4)的DRS-R-98评分;并测定Aβ1-40质量浓度。结果T组患者PD的患病率为20.0%。T组Aβ1-40质量浓度在T0、T1、T2、T3时段明显高于C组(P<0.01),T组和C组Aβ1-40质量浓度在T1和T2时段明显高于同组T0时段(P<0.05)。T组在T3和T4时段的DRS-R-98评分明显高于同组T1时段和C组(P<0.01)。结论Aβ1-40在全身麻醉后持续升高可能是老年患者发生PD的重要原因之一。  相似文献   

14.
目的 探讨双氯芬酸钠对脂多糖(LPS)诱导的人牙周膜成纤维细胞(HPDLFs)白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)表达的影响。方法 本研究于2013年3—5月在山西医科大学口腔实验室进行。将复苏培养冻存的HPDLFs进行形态学鉴别后,用10 μg/mL的LPS进行诱导,分别以0.1、1、10、50、100 mg/L的双氯芬酸钠进行干预,酶联免疫吸附试验法(ELISA法)检测HPDLFs表达IL-1β和TNF-α水平的变化。结果 对同一质量浓度LPS诱导的HPDLFs而言,双氯芬酸钠能下调HPDLFs表达IL-1β和TNF-α的水平,并且随着双氯芬酸钠质量浓度的增加,IL-1β和TNF-α的表达量呈逐渐减弱的趋势(P<0.05)。结论 双氯芬酸钠可能对于LPS诱导的HPDLFs IL-1β和TNF-α的表达有重要的抑制作用,这为牙周病的临床治疗提供了新的思路。  相似文献   

15.
目的 探讨牙龈卟啉单胞菌(Porphyromonas gingivalis,P.gingivalis)PG0839基因对小鼠肝细胞和血清中炎症因子白细胞介素1β(IL-1β)与白细胞介素6(IL-6)表达的影响,以期为进一步明确该基因的功能提供实验依据。方法 本研究于2013年6—12月在中国医科大学口腔医学院中心实验室完成。选择18~22 g SPF级昆明小鼠18只,适应性喂养1周后,随机分为3组,每组6只。组1为接种P.gingivalis W83菌株组,组2为接种P.gingivalis PG0839基因突变菌株组,组3为对照组。在组1、组2的每只小鼠背部皮下2个位点各注射浓度为1×109 CFU/mL的细菌悬液0.1 mL,组3的每只小鼠注射等量无菌PBS缓冲液。在细菌接种后5 d处死各组小鼠,留存肝组织及血清。使用双抗体夹心酶联免疫吸附(ELISA)法检测各组小鼠肝组织和血清中IL-1β与IL-6水平。应用SPSS 13.0统计软件对结果数据进行分析。结果 组2小鼠肝组织和血清中的IL-1β与IL-6表达显著低于组1小鼠(P<0.05);与组3小鼠相比,组1和组2小鼠肝组织和血清中IL-1β与IL-6表达均显著增加( P < 0. 05)。结论 PG0839基因可能参与P.gingivalis引发小鼠全身炎症的过程。  相似文献   

16.
目的探讨氟涂层与β-磷酸三钙(β-TCP)涂层对AZ31B镁合金降解行为的影响,并进行比较。方法本研究于2008年6月至2009年3月在中国医科大学完成。将采用化学法进行氟涂层的AZ31B镁合金(氟涂层组)与采用低温化学沉积法进行β-TCP涂层的AZ31B镁合金(β-TCP涂层组)及无涂层AZ31B镁合金(对照组)分别浸泡于骨细胞培养基DMEM溶液,观察浸泡1、3、5、7、14d时各组DMEM溶液pH值的变化。并采用扫描电镜观察各组材料浸泡前和浸泡7d后的表面形貌。结果 (1)各组不同浸泡时间DMEM溶液pH值的变化:对照组pH值持续升高;氟涂层组无明显变化;β-TCP涂层组浸泡3d内,pH值无明显变化,之后pH值明显升高。(2)表面形貌:浸泡前,对照组材料表面相对光滑;氟涂层组材料表面致密、光滑,有一些同向的纹理;β-TCP涂层组材料表面为团块状结晶,粗糙度比涂层前明显增大。浸泡7d后,对照组材料表面呈龟裂状;氟涂层组材料表面无明显改变,可见散在腐蚀凹陷;β-TCP涂层组材料表面块状晶体逐渐发生球化,部分晶体有溶解迹象呈团状。结论氟涂层和β-TCP涂层可以在一定程度上控制AZ31B镁合金初期降解速度,其中氟涂层比β-TCP涂层更加有效。  相似文献   

17.
目的探讨盐酸小檗碱对大鼠实验性牙周炎模型牙周组织中白细胞介素- 1β(IL- 1β)和肿瘤坏死因子- α(TNF- α)表达的影响。方法在成功建立大鼠实验性牙周炎模型的基础上,实验动物在分别灌服盐酸小檗碱后第1、2、3、4周处死,取牙周组织标本作切片,行常规苏木精- 伊红染色,观察牙周组织病理变化状况,并采用免疫组织化学SABC法检测IL- 1β、TNF- α水平变化。结果牙周炎组牙周组织中IL- 1β、TNF- α表达明显高于正常组(P<0.05);各时间段牙周炎治疗组牙周组织中IL- 1β、TNF- α表达明显低于牙周炎组(P<0.05),但牙周炎治疗组各时间段之间IL- 1β、TNF- α表达无显著差异。结论大鼠实验性牙周炎模型牙周组织中TNF- α、IL- 1β表达水平较正常对照组明显升高,应用盐酸小檗碱能抑制实验性牙周炎模型牙周组织中TNF- α、IL- 1β的表达。  相似文献   

18.
目的 研究不同浓度的转化生长因子β1(transforming growth factor-β1,TGF-β1)对人牙髓干细胞(human dental pulp stem cells,hDPSCs)成骨分化的影响。方法 采用酶消化法提取hDPSCs,通过流式细胞术鉴定干细胞的表面标记物。实验组利用含有不同浓度TGF-β1(1、5、10、20 ng/mL)的α-MEM培养细胞,对照组以不含TGF-β1的α-MEM培养细胞,分别在第7天和14天时,采用实时荧光定量PCR(qRT-PCR)方法检测成骨相关因子的表达情况。在第21天时,通过茜素红染色观察矿化结节形成情况。结果  显微镜下可见hDPSCs呈长梭形,形态类似成纤维细胞。流式细胞术检测结果显示细胞呈CD73和CD90阳性表达,CD31、CD34和CD45阴性表达,具有典型的干细胞表面标记物。qRT-PCR结果表明,含有TGF-β1的各实验组均能明显促进成骨相关因子Runt 相关转录因子2(Runx-2)、骨涎蛋白(BSP)和骨钙素(OCN)mRNA的表达。第7天时,TGF-β1浓度为1 ng/mL 组的Runx-2、BSP和OCN的表达水平分别为对照组的11.3倍、8.7倍和11.7倍,明显高于其他各浓度组(P < 0.05);第14天时,1 ng/mL组的Runx-2、BSP和OCN表达水平分别为对照组的5.08倍、7.17倍和3.03倍(P < 0.05),20 ng/mL组BSP表达水平与对照组差异无统计学意义(P > 0.05)。茜素红染色显示各浓度的TGF-β1均能促进hDPSCs矿化结节形成。结论 TGF-β1可以促进hDPSCs的成骨分化。  相似文献   

19.
目的  探讨正畸牙受力后龈沟液内白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)水平的动态变化及其生物学意义。方法  选择15例正畸患者为研究对象,将每位患者的4颗尖牙按左右侧随机分入实验组和对照组。实验组用橡皮链加力拉尖牙向远中,对照组尖牙不加力。分别在戴矫治器前,戴矫治器后1、24、48、72和168 h时收集两组尖牙远中颊面龈沟液,应用放射免疫法测定龈沟液内IL-1β和TNF-α的含量。结果  实验组在加力24 h后IL-1β和TNF-α水平开始升高,72 h达到最高,168 h基本恢复至基线水平;对照组在整个实验过程中IL-1β和TNF-α含量均保持在基线水平。48 h和72 h实验组IL-1β和TNF-α含量与对照组相比有显著性差异(P<0.05)。24 h实验组 TNF-α含量与对照组有显著性差异(P<0.05),而IL-1β含量与对照组相比无显著性差异(P>0.05)。结论  牙齿正畸过程中受机械力的作用龈沟液内IL-1β和TNF-α水平发生动态变化,表明这两种生物活性因子早期即参与牙齿移动和牙槽骨重建过程。  相似文献   

20.
目的分析重组人白细胞介素-1β(rhIL-1β)诱导前后牙髓细胞蛋白质的差异,鉴定2组间差异表达的蛋白质。方法采用双向凝胶电泳技术分离牙髓细胞全蛋白,获得对照组和诱导组牙髓细胞蛋白质图谱,Image Master2D Elit 5.0软件分析确认差异表达蛋白。通过基质辅助的激光解吸飞行时间质谱对差异表达的蛋白质点进行质谱鉴定,得到肽质量指纹图谱。结果比较对照组和诱导组蛋白质图谱,发现了39个蛋白质点差异明显。其中15个蛋白质点在诱导组高表达,新增13个蛋白质点,7个蛋白质点低表达,4个蛋白质点仅在对照组中表达;质谱鉴定后,10个蛋白得到确认。结论牙髓细胞对rhIL-1β的应答反应是一个非常复杂的过程,多种蛋白质分子涉及其中。鉴定了牙髓细胞中与rhIL-1β作用密切相关的2个差异蛋白,为探索早期牙髓炎的应答机制提供了新的线索和思路。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号