首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到10条相似文献,搜索用时 171 毫秒
1.
The aim of the study was to investigate the effects of TGP, an active compound extracted from the roots of Paeonia lactiflora Pall, on the activities of synoviocytes in rats with collagen-induced arthritis (CIA) and its possible mechanisms. CIA was induced in male Sprague-Dawley (SD) rats immunized with chicken type II collagen (CII) in Freund's complete adjuvant (FCA). Synoviocytes proliferation was determined by 3-(4, 5-2dimethylthiazal-2yl) 2, 5-diphenyltetrazoliumbromide (MTT) assay. Tumor necrosis factor alpha (TNF-alpha), interleukin-1 (IL-1), prostaglandin E(2) (PGE(2)) and cyclic adenosine monophosphate (cAMP) levels in synoviocytes were measured by radioimmunoassay (RIA). E-prostanoid (EP)(2) and EP(4) receptors were analyzed by Western blot analysis. The results showed that TGP significantly inhibited the proliferation of synoviocytes, decreased the production of IL-1, TNF-alpha and PGE(2) and elevated the levels of cAMP. Further study showed that TGP could up-regulate the expression of EP(2) and EP(4). These results indicated that TGP might exert its anti-inflammatory effects through inhibiting the production of pro-inflammatory mediators in synoviocytes of CIA rats, which might be associated with its ability to regulate cAMP-dependent EP(2)/EP(4)-mediated pathway.  相似文献   

2.

Aim of the study

To investigate the expression of β-arrestins in fibroblast-like synoviocytes (FLS) from collagen-induced arthritis (CIA) rats and the effect of total glucosides of paeony (TGP).

Materials and methods

TGP and glucosides of tripterygium wilfordii (GTW) were intragastriclly administrated to collagen-induced arthritis (CIA) rats after immunization. The secondary inflammatory reaction was evaluated by hind paw swelling, polyarthritis index and histopathological changes. Antibodies to type II collagen (CII) were determined by enzyme-linked immunosorbent assay (ELISA). Synoviocyte proliferations were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl (MTT) assay. The expression of β-arrestins in synoviocytes from CIA rats was measured by western blot.

Results

The administration of TGP (25, 50, 100 mg/kg) depressed hind paw swelling and decreased the arthritis scores of CIA rats. TGP improved the pathologic manifestations of CIA. Serum anti-CII antibodies level increased significantly in CIA rats, while TGP had no effect on it. Fibroblast-like synoviocytes (FLS) proliferation was inhibited by TGP (50, 100 mg/kg). On d14, d28 after immunization, β-arrestins expression greatly up-regulated in synoviocytes from CIA rats and then returned to baseline levels on d42 after immunization. TGP (50, 100 mg/kg) significantly reduced the expression of β-arrestins.

Conclusion

An inflammatory process in vivo induces an up-regulation of β-arrestins in synoviocytes from CIA rats while TGP can inhibit this change, which might be one of the important mechanisms for TGP to produce a marked therapeutic effect on RA.  相似文献   

3.

Ethnopharmacological relevance

To investigate the effect of the Paeoniflorin (Pae), a main active component of total glucosides of paeony (TGP) extracted from the root of Paeonia lactiflora, on regulation of synoviocytes cultured from rats collagen-induced arthritis (CIA) in vitro.

Materials and methods

CIA was induced in male Sprague-Dawley rats immunized with chicken type II collagen (CCII) in Freund's complete adjuvant. The levels of interleukin-1 (IL-1), tumor necrosis factor α (TNF-α), prostaglandin E2 (PGE2) and cyclic adenosine monophosphate (cAMP) were measured by radioimmunoassay. The proliferation responses was determined by the 3-(4,5-2dimethylthiazal-2yl) 2,5-diphenyltetrazoliumbromide (MTT) assay. Expression of E-prostanoid (EP4) receptor was detected by Western blotting technique.

Results

Treatment of Pae (2.5, 12.5, 62.5 μg/ml) significantly decreased the production of IL-1 and TNF-α. Recombinant interleukin-1 (rIL-1α) (10 ng/ml) apparently stimulated synoviocyte, thymocyte and splenocyte proliferation, and Pae (12.5, 62.5 μg/ml) inhibited abnormal proliferation responses stimulated by rIL-1α. Moreover, rIL-1α time- and concentration-dependently increased production of PGE2. The production of PGE2 produced by synoviocytes from CIA rats significantly inhibited by administration of Pae (12.5, 62.5 μg/ml). rIL-1α (10 ng/ml) decreased cAMP of synoviocytes cells treated for 24 h. Similarly rIL-1α (0.1, 1, 10 ng/ml) induced a concentration-dependent decrease in the production of cAMP at 24 h. Pae (12.5, 62.5 μg/ml) increased the production of cAMP in synoviocytes. The immunoblot, Pae (12.5, 62.5 μg/ml) apparently increased the expression of EP4 receptor in synoviocytes stimulated by rIL-1α (10 ng/ml).

Conclusions

The present study indicates that Pae might exert its anti-inflammatory effects through suppressing synoviocytes function and regulating immune cells responses in CIA rats, which might be associated with its ability to up-regulate the E-prostanoid (EP4) receptor protein expression and modulate intracellular cAMP level.  相似文献   

4.
AIM: To investigate the therapeutic effects and mechanisms of total flavonoids of Turpinia Arguta Seen (TFS) on adjuvant arthritis in rats. METHODS: The model of adjuvant arthritis was induced by injection of Freund's Complete Adjuvant (FCA). Secondary paw swelling of AA rats was measured with volume meter and polyarthritis index were scored. The splenocyte proliferation, (interleukin-1) IL-1 and interleukin-2 (IL-2) production were assayed by cell proliferation assay. Prostaglandin E(2) (PGE(2)) production was determined by radioimmunoassay. RESULTS: TFS (80, 160, 320 mg/kg, i.g.) could significantly inhibit secondary inflammatory reaction (secondary swelling, multiple arthritis, pathologic change of ankle arthritis) in AA rats. The results in vivo showed that the low response of splenocytes to concanavalin A (Con A) and lipopolysaccharide (LPS) and the decreased IL-2 synthesis were restored in AA rats treated with TFS (160, 320 mg/kg, i.g.), while the elevated IL-1 and PGE(2) released from peritoneal macrophages (PMphi) were also reduced. CONCLUSION: TFS has significant therapeutic effect on AA rats, which might be relate to its immunoregulatory actions.  相似文献   

5.
通痹灵对大鼠佐剂性关节炎滑膜细胞功能的影响   总被引:21,自引:0,他引:21  
目的:研究通痹灵(TBL)对佐剂性关节炎(AA)大鼠滑膜成纤维增殖及滑膜细胞分泌白细胞介素1(IL-1),肿瘤坏死因子α(TNF-α)和前列腺素E2(PGE2)的影响。  相似文献   

6.
目的比较雷公藤、白芍总苷、苦杏仁水煎剂对佐剂性关节炎(AA)大鼠模型抗炎作用效果及机制差异,为类风湿关节炎的防治提供理论依据。方法建立AA大鼠模型,比较雷公藤、白芍总苷、苦杏仁水煎剂对AA大鼠足踝关节组织病理及血清中促炎因子肿瘤坏死因子α(TNF-α)、免疫细胞间黏附分子(sICAM-1)水平的影响。结果雷公藤、白芍总苷、苦杏仁水煎剂均能有效抑制关节肿胀,减轻炎症的发展,并降低AA大鼠血清中TNF-α、sICAM-1的水平。与雷公藤相比,白芍总苷、苦杏仁水煎剂更能降低血清中TNF-α的水平。结论雷公藤、白芍总苷、苦杏仁水煎剂均可起到抗类风湿关节炎作用,白芍总苷、苦杏仁水煎剂可有效降低血清中TNF-α的水平。  相似文献   

7.
研究中药白头翁有效成分白头翁皂苷(pulchinenoside,PULC)对佐剂性关节炎(adjuvant arthritis,AA)大鼠Frizzled(FZD)表达的影响。采用足跖注射完全弗氏佐剂制备AA大鼠,原代培养AA大鼠滑膜成纤维样滑膜细胞(fibroblast-like synoviocytes,FLS),Real-time qPCR检测PULC灌胃治疗对AA大鼠FLS FZD8表达的影响,MTT,ELISA检测FZD8敲除对FLS增殖和IL-1,IL-6,IL-8表达的影响,Real-time qPCR检测miR-375在FZD8异常表达中的作用。检测发现经PULC灌胃治疗后,AA大鼠FLS中FZD8表达明显降低,FZD8敲除后FLS增殖明显减弱,IL-1,IL-6,IL-8表达明显减少,PULC灌胃治疗后miR-375表达明显升高,上调表达的miR-375能够抑制FZD8的表达。PULC可能通过上调miR-375表达抑制FZD8的表达。  相似文献   

8.
目的:探讨白芍总苷(total glucosides of paeonia:TGP)对佐剂关节炎大鼠足爪组织中基质金属蛋白酶-9(MMP-9)蛋白表达的抑制作用和对大鼠足爪组织病理改变的影响及血清中血管内皮生长因子(VEGF)和白介素-1β(IL-1β)含量的影响。方法:建立Ⅱ型胶原诱导的佐剂关节炎大鼠模型,用免疫组化染色法检测足爪组织中MMP-9蛋白的表达,病理切片观察不同剂量的TGP对佐剂关节炎大鼠的治疗效果,用ELISA法检测佐剂关节炎大鼠血清中VEGF和IL-1β的含量。结果:白芍总苷中(50 mg/kg)、大(100 mg/kg)剂量组的胞浆内MMP-9的阳性表达比模型对照组明显降低,TGP中、大剂量治疗组与地塞米松组能明显改变佐剂关节炎大鼠皮下组织细胞排列、炎性细胞浸润及血管增生现象,TGP 25 mg/kg组对改善佐剂关节炎大鼠足部皮肤的病理状况无明显作用。中、大剂量的TGP组和地塞米松组血清VEGF和IL-1β的含量明显降低。结论:TGP对佐剂关节炎大鼠炎症的抑制作用,可能与其下调MMP-9蛋白的表达,抑制炎性细胞浸润及血管增生,降低炎性细胞因子VEGF和IL-1β的产生有关。  相似文献   

9.
 目的研究鹿瓜多肽口服液(lugua polypeptide solution,LGPS)对大鼠佐剂性关节炎(adjuvant arthritis,AA)的治疗作用,并探讨其可能的作用机制。方法复制大鼠AA模型后第8天,LGPS按3.5,7和14mg·kg-1给大鼠灌胃治疗,每天1次,连续16d。于给药第4,7,10,13,16及18天测定大鼠左、右足跖容积,计算肿胀率。治疗后第19天测定大鼠腹腔巨噬细胞吞噬功能,关节渗出液中PGE2含量,血液流变学,血清SOD活性及MDA、NO、IL-1β、TNF-α和IL-6含量。结果LGPS能明显降低AA大鼠右后关节的原发性肿胀和左后关节的继发性肿胀(P<0.05~P<0.001),可使腹腔巨噬细胞吞噬功能,全血低(5/s)、中(80/s)、高切(160/s)黏度,血沉,血清MDA、NO、IL-1β、TNF-α及IL-6含量明显降低,血清SOD活性明显提高(P<0.05或P<0.01),对关节渗出液中PGE2含量则无明显影响(P>0.05)。结论LGPS对大鼠AA有明显治疗作用,可能与其抑制巨噬细胞活化,降低血清中IL-1、TNF-α和IL-6含量,提高机体对氧自由基的清除力及改善血液流变性有关。  相似文献   

10.
白芍总苷对大鼠胶原性关节炎及其免疫功能的影响   总被引:11,自引:0,他引:11  
朱蕾  魏伟 《中国药学杂志》2007,42(20):1547-1550
 目的研究白芍总苷(TGP)对大鼠胶原性关节炎(CIA)及其免疫功能的影响。方法采用鸡Ⅱ型胶原诱导大鼠CIA模型,关节评分法检测关节炎发生情况,ELSIA法检测大鼠血清中抗CⅡ抗体的水平,MTT法检测T细胞和B细胞增殖反应,IL-1、IL-2活性的测定采用小鼠淋巴细胞增殖法。结果大鼠于致炎后第14天开始出现多发性关节炎症状,体重减轻,血清中抗CⅡ抗体水平升高,TGPig给药,连续14d,能够明显抑制CIA大鼠的AI,促进大鼠体重的恢复,降低血清中抗CⅡ抗体水平。进一步研究表明,TGP体内、外给药均能抑制CIA大鼠增高的T、B淋巴细胞增殖反应,还能显著降低刀豆蛋白A(ConA)诱导的CIA大鼠脾淋巴细胞产生IL-2的能力以及脂多糖(LPS)诱导的腹腔巨噬细胞产生IL-1的能力。结论TGP对CIA大鼠具有治疗作用,其机制可能与其调节CIA大鼠异常的免疫功能,平衡细胞因子的产生有关。  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