Experimental Study on Effect of Compound Biejia Ruangan Prescription (复方鳖甲软肝方) on High Resolution Computerized Tomographic Images in Bleomycin Induced Pulmonary Fibrosis Rats

Objective: To study the therapeutic effect of Com pound Biejia Ruangan prescription (CBRP) on rat model with pulmonary fibrosis in duced by bleomycin. Methods: Fifty four male Sprague Dawley rats were rando mly divided into 6 groups (9 rats in each group). From the first day to the 28th day of the experiment, except to those in the sham model control group that were treated with normal saline, the same amount of bleomycin injection as the n ormal saline given to the control group was given through endotracheal instillat ion to all the rats in all the other groups. From the 29th day of the modeling, CBRP solution of different dosages was respectively injected into the rats in th e high, moderate and low CBRP dose group, while equal volume of normal saline w as given to those in the sham model control group and the model control group , and an equal volume of prednisone solution was given to rats in the prednisone group. On the 80th day, the high resolution computerized tomographic (HRCT) images were observed on an equal footing, and HRCT pathology was correlativel y studied. Results: Different HRCT pathological changes were shown in th e rats with pulmonary fibrosis, such as lung consolidation, thickening of interl obular septum and interlobular mesenchyma as well as lobular deformation, nodule shadow, abnormal brochiovascular tract, thickened pleura with irregular junctio n and polished glass like dense shadows. Honeycomb lung was observed in some cases. Pathological sections showed fibrotic proliferation of lung tissues and noticeable pulmonary interstitial fibrosis. CBRP could improve HRCT images of rats with pulmonary fibrosis, and lower fibrotic p roliferation of the lung tissue.Conclusion: CBRP plays its therapeutic role possibly through its effect on the structure of the lung in rats with pulmonary fibrosis.

复方鳖甲软肝方防治肺纤维化大鼠自由基损伤作用的实验研究

目的研究复方鳖甲软肝方防治肺纤维化大鼠自由基损伤的作用和机制。方法SD雄性大鼠随机分为正常组、假手术组、模型组、强的松(0.56 m g/kg)组、复方鳖甲软肝方高、中、低剂量(1.4、0.7、0.35 g/kg)组,每组10只。除正常组、假手术组外,其余各组大鼠气管滴注盐酸博莱霉素制备大鼠肺纤维化模型。造模后第2天,各组分别ig给药,连续给药4周。测定各组大鼠肺组织中超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(G SH-Px)、诱导型一氧化氮合酶(iNO S)活性和丙二醛(M DA)水平;采用W estern b lotting实验研究肺组织蛋白中核因子κB(NF-κB)和核因子κB抑制剂(IκBα)的表达。结果复方鳖甲软肝方能提高肺纤维化大鼠体内的G SP-Px和SOD活性,降低M DA水平和iNO S活性,减弱肺纤维化大鼠肺组织核蛋白中NF-κB表达,增强胞浆蛋白中IκBα的表达。结论复方鳖甲软肝方能调节肺纤维化大鼠体内自由基水平,减轻自由基对肺组织结构的氧化损伤,调节肺组织蛋白IκBα的表达,进而抑制NF-κB表达,是该方防治肺纤维化的作用机制。

复方鳖甲软肝方对肺纤维化大鼠细胞外基质的影响

目的 :研究复方鳖甲软肝方对博莱霉素诱导大鼠肺纤维化细胞外基质的影响。方法 :SD雄性大鼠 54只 ,分为假手术对照组、模型对照组、复方鳖甲软肝方高剂量组、中、低剂量组、强的松组 ,每组 9只。除假手术对照组外其余各组大鼠气管内一次性滴注盐酸博莱霉素 ,假手术对照组大鼠气管内一次性滴注等体积的生理盐水。 2 8d后给药 ,复方鳖甲软肝方高、中、低剂量组 ,强的松组分别灌服复方鳖甲软肝方 1.4,0 .7,0 .3 5g·kg- 1及强的松 0 .56mg·kg- 1,假手术对照组、模型对照组分别灌服等体积的生理盐水。观察 80d时大鼠肺组织羟脯氨酸和血清中Ⅲ (Ⅲ C) ,Ⅳ (Ⅳ C)胶原及层粘连蛋白 (LN)和透明质酸 (HA)的含量 ,同时取肺组织行HE ,Masson染色。结果 :复方鳖甲软肝方可降低肺纤维化大鼠Ⅰ ,Ⅲ胶原 ,层粘连蛋白及透明质酸含量 ,减轻肺组织纤维性增生。结论

复方鳖甲软肝方防治阿霉素肾病模型大鼠作用机制的实验研究

目的:探讨复方鳖甲软肝方防治阿霉素肾病模型大鼠肾小球硬化的作用机制。方法:将45只Wistar雄性大鼠,适应性喂养1周,测尿蛋白阴性后,随机分为正常组、假手术组、模型组、苯钠普利组、复方鳖甲软肝方组,每周测大鼠体重,每2周1次收集大鼠24h尿量,测24h尿蛋白定量,10周后处死大鼠,分离血清观察血尿素氮(BUN)、肌酐(SCr)、胆固醇(Cho)、三酰甘油(TG)、总蛋白(TP)和清蛋白(Alb),应用HE、六胺银染色及Mallory染色,观察肾组织病理学改变,数据用SPSS11.0进行统计学处理。结果:复方鳖甲软肝方能够减轻阿霉素肾病模型大鼠肾组织病理损害,增加阿霉素肾病模型大鼠体重,减少尿蛋白排泄,提高血TP和Alb水平,降低BUN和SCr,改善肾功能。结论:复方鳖甲软肝方能减轻阿霉素肾病模型大鼠的肾脏病理损害,对阿霉素肾病模型大鼠肾小球硬化有一定的保护作用。

蒿鳖养阴软坚方对四氯化碳复合因素所致肝纤维化的预防作用

目的:探讨蒿鳖养阴软坚方对CCl4复合因素所致大鼠肝纤维化的预防作用及可能的作用机制。方法:将大鼠随机分为正常对照组,模型组,蒿鳖养阴软坚方高、中、低剂量组(8.20,2.59,0.82 g.kg-1),复方鳖甲软肝片组(0.54 g.kg-1),秋水仙碱组(1×10-4g.kg-1)。第1次sc CCl45 mL.kg-1,从第2次开始每隔3 d sc 40%CCl4花生油3 mL.kg-1至第12次;模型组和治疗组隔日ig 30%乙醇(1 mL/只),各治疗组每日给药1次,正常组和模型组均给予相应体积的蒸馏水,每周6d(停药1 d),共6周。观测肝组织形态和胶原蛋白,测定血清肝功能丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST);放免法测定血清透明质酸(HA)、IV型胶原(IV-C)、III型前胶原(PCIII),层黏连蛋白(LN)水平;紫外-可见分光光度法测定血清丙二醛(MDA)水平;检测肝组织中羟脯氨酸,胶原蛋白及白蛋白含量。结果:模型组大鼠肝组织内肝细胞广泛变性及坏死,大量炎性细胞浸润,类假小叶形成,大量胶原纤维形成;蒿鳖养阴软坚方高剂量组的肝脏病理变化程度较模型组明显减轻且无类假小叶形成;模型组的ALT,AST,HA及PCIII含量均高于正常对照组(P<0.01,P<0.05);各蒿鳖养阴软坚方给药组ALT,AST,HA及PCIII高剂量组显著低于模型组(P<0.05);MDA及胶原蛋白的含量均低于模型组(P<0.01),各蒿鳖养阴软坚方给药组白蛋白均高于模型组(P<0.01)。结论:蒿鳖养阴软坚方对四氯化碳复合因素诱导的大鼠肝纤维化有预防作用;其作用机制可能与抗脂质过氧化损伤,抗炎,抑制胶原蛋白的合成等有关。