Objective:To explore the effect of Cassia fistula on collagenⅡ-induced arthritis in rats.Methods:The effect of 250 and 500 mg/kg chloroform and hydroalcoholic extract of Cassia fistula leaf on collagenⅡ-induced arth...Objective:To explore the effect of Cassia fistula on collagenⅡ-induced arthritis in rats.Methods:The effect of 250 and 500 mg/kg chloroform and hydroalcoholic extract of Cassia fistula leaf on collagenⅡ-induced arthritis was investigated by evaluating paw volume,arthritis index,spleen index,and biochemical parameters.Histopathological analysis and docking study were also performed.Results:A dose-dependent reduction in paw volume,arthritic index,and spleen index was observed following oral administration of the chloroform and hydroalcoholic extracts.Treatment with Cassia fistula extracts reduced tumor necrosis factor-α,interleukin(IL)-1β,IL-6,prostaglandin E_(2),aspartate aminotransferase,alanine aminotransferase,total leucocyte count,and erythrocyte sedimentation rate while increasing IL-10 level.In addition,Cassia fistula extracts improved joint architecture,and prevented cartilage and bone destruction.Docking analysis demonstrated that the physcion,1-octacosanol,5,3’,4’-trihydroxy-6-methoxy-7-O-α-Lrhamnopyranosyl-(1,2)-O-β-D-galactopyranoside and scopoletin may be responsible for the anti-arthritic effect of Cassia fistula.Conclusions:Cassia fistula suppresses the progression of collagenⅡ-induced arthritis by lowering the inflammatory factors,decreasing paw volume and arthritic index,and alleviating joint architecture.However,further studies are required to confirm the bioactive molecule responsible for the anti-arthritic potential of Cassia fistula.展开更多
Objective To investigate the expression of discoidin domain receptor 2 (DDR2) of fibroblast-like synovial cells in im- proved adjuvant-induced animal (AIA) model for rheumatoid arthritis (RA) and to provide evidence f...Objective To investigate the expression of discoidin domain receptor 2 (DDR2) of fibroblast-like synovial cells in im- proved adjuvant-induced animal (AIA) model for rheumatoid arthritis (RA) and to provide evidence for DDR2’s antagonist use clinically. Methods AIA was modified by administrating 0.1 mL of complete Freund’s adjuvant (CFA, mixed with 5 mg Bacillus Calmette-Guerin vaccine/mL) into rats’ right hind paws and 0.125 mL tumor necrosis factor-α (2 U/mL) into right ankles and subpatellar fatty tissue. The expression of DDR2 in fibroblast-like synovial cells was assessed using immunohistochemistry, immunofluorescence histochemistry, and in situ hybridization methods. Levels of anti-collagen II antibody were measured using enzyme-linked immunosorbent assay. Results Given the terms mentioned above, we found a more practical rat model, apparently decreasing immunization time (average 3-5 days). DDR2 can be detected upon the 15th day of immunization; expression gradually increased with time going on, and reaching a peak 35 days after immunization before gradually decreasing. Serum anti-collagen II antibody showed similar expression patterns as DDR2, but reached peak later than DDR2, about 40 days after immunization. Conclusion Regular expression of DDR2 in animal models infers its important role in the pathological process of RA.展开更多
目的建立血清抗Ⅱ型胶原蛋白抗体的ELISA法,探讨其在类风湿关节炎(RA)患者中的应用价值。方法以自提可溶性鸡Ⅱ型胶原蛋白(soluble chicken collagen type Ⅱ,SCCⅡ)作为包被抗原,优化实验条件,建立抗Ⅱ型胶原蛋白抗体间接ELISA法。对12...目的建立血清抗Ⅱ型胶原蛋白抗体的ELISA法,探讨其在类风湿关节炎(RA)患者中的应用价值。方法以自提可溶性鸡Ⅱ型胶原蛋白(soluble chicken collagen type Ⅱ,SCCⅡ)作为包被抗原,优化实验条件,建立抗Ⅱ型胶原蛋白抗体间接ELISA法。对124例RA病人和54例健康人血清抗Ⅱ型胶原蛋白抗体进行检测。结果血清抗Ⅱ型胶原蛋白抗体的检测条件为:SCCⅡ包被浓度为20μg/ml;以含10%羊血清的缓冲液进行封闭、稀释血清和酶标抗体;采用双波长(450nm/630nm)进行测定。RA患者和健康人血清抗Ⅱ型胶原蛋白抗体阳性率分别为19.35%(24/124)和1.85%(1/54),两组有明显的统计学差异(P<0.01)。结论以SCCⅡ为包被抗原检测抗Ⅱ型胶原蛋白抗体可作为判断RA患者病情的一个辅助诊断指标。展开更多
基金supported by the Institute of Pharmaceutical Sciences,Kurukshetra University,Kurukshetra,Haryana,India,and Govt.College of Pharmacy,Rohru,District Shimla,Himachal Pradesh,India。
文摘Objective:To explore the effect of Cassia fistula on collagenⅡ-induced arthritis in rats.Methods:The effect of 250 and 500 mg/kg chloroform and hydroalcoholic extract of Cassia fistula leaf on collagenⅡ-induced arthritis was investigated by evaluating paw volume,arthritis index,spleen index,and biochemical parameters.Histopathological analysis and docking study were also performed.Results:A dose-dependent reduction in paw volume,arthritic index,and spleen index was observed following oral administration of the chloroform and hydroalcoholic extracts.Treatment with Cassia fistula extracts reduced tumor necrosis factor-α,interleukin(IL)-1β,IL-6,prostaglandin E_(2),aspartate aminotransferase,alanine aminotransferase,total leucocyte count,and erythrocyte sedimentation rate while increasing IL-10 level.In addition,Cassia fistula extracts improved joint architecture,and prevented cartilage and bone destruction.Docking analysis demonstrated that the physcion,1-octacosanol,5,3’,4’-trihydroxy-6-methoxy-7-O-α-Lrhamnopyranosyl-(1,2)-O-β-D-galactopyranoside and scopoletin may be responsible for the anti-arthritic effect of Cassia fistula.Conclusions:Cassia fistula suppresses the progression of collagenⅡ-induced arthritis by lowering the inflammatory factors,decreasing paw volume and arthritic index,and alleviating joint architecture.However,further studies are required to confirm the bioactive molecule responsible for the anti-arthritic potential of Cassia fistula.
基金Supported by the 973 key research finance of the state(2002CB 513000-07 ).
文摘Objective To investigate the expression of discoidin domain receptor 2 (DDR2) of fibroblast-like synovial cells in im- proved adjuvant-induced animal (AIA) model for rheumatoid arthritis (RA) and to provide evidence for DDR2’s antagonist use clinically. Methods AIA was modified by administrating 0.1 mL of complete Freund’s adjuvant (CFA, mixed with 5 mg Bacillus Calmette-Guerin vaccine/mL) into rats’ right hind paws and 0.125 mL tumor necrosis factor-α (2 U/mL) into right ankles and subpatellar fatty tissue. The expression of DDR2 in fibroblast-like synovial cells was assessed using immunohistochemistry, immunofluorescence histochemistry, and in situ hybridization methods. Levels of anti-collagen II antibody were measured using enzyme-linked immunosorbent assay. Results Given the terms mentioned above, we found a more practical rat model, apparently decreasing immunization time (average 3-5 days). DDR2 can be detected upon the 15th day of immunization; expression gradually increased with time going on, and reaching a peak 35 days after immunization before gradually decreasing. Serum anti-collagen II antibody showed similar expression patterns as DDR2, but reached peak later than DDR2, about 40 days after immunization. Conclusion Regular expression of DDR2 in animal models infers its important role in the pathological process of RA.
文摘目的建立血清抗Ⅱ型胶原蛋白抗体的ELISA法,探讨其在类风湿关节炎(RA)患者中的应用价值。方法以自提可溶性鸡Ⅱ型胶原蛋白(soluble chicken collagen type Ⅱ,SCCⅡ)作为包被抗原,优化实验条件,建立抗Ⅱ型胶原蛋白抗体间接ELISA法。对124例RA病人和54例健康人血清抗Ⅱ型胶原蛋白抗体进行检测。结果血清抗Ⅱ型胶原蛋白抗体的检测条件为:SCCⅡ包被浓度为20μg/ml;以含10%羊血清的缓冲液进行封闭、稀释血清和酶标抗体;采用双波长(450nm/630nm)进行测定。RA患者和健康人血清抗Ⅱ型胶原蛋白抗体阳性率分别为19.35%(24/124)和1.85%(1/54),两组有明显的统计学差异(P<0.01)。结论以SCCⅡ为包被抗原检测抗Ⅱ型胶原蛋白抗体可作为判断RA患者病情的一个辅助诊断指标。
