雷公藤多苷片和雷公藤片对CIA模型大鼠干预的量毒效比较研究

Comparative study on dose-toxicity-effect of Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets on CIA model rats

从量-效-毒角度观察并比较雷公藤多苷片和雷公藤片口服后对Ⅱ型胶原诱导性关节炎(collagen-induced arthritis,CIA)大鼠的干预作用。将SD大鼠随机分为8组:正常组,模型组,雷公藤多苷片给药组(1倍等效剂量0.009 g?kg^-1,4倍等效剂量0.036 g?kg^-1,16倍等效剂量0.144 g?kg^-1)和雷公藤片给药组(1倍等效剂量0.007 5 mg?kg^-1,4倍等效剂量0.030 mg?kg^-1,16倍等效剂量0.120 mg?kg^-1)。首次免疫后当天开始灌胃给药,每天1次。二次免疫后观察大鼠关节红肿和畸形症状,评价关节炎临床积分,分别在第21,42天取材并进行相关观察:HE和Masson染色法检查关节组织病理学变化;ELISA法检测血清中抗Ⅱ型胶原抗体IgG的表达量;常规检测血液成分;血清酶学方法检测血清中碱性磷酸酶(ALP)、丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、谷氨酰转移酶(GGT)、总胆红素(TBiL)、肌酐(CRE)和尿素(UREA)含量;光镜评估附睾中精子畸形率,HE染色法分析睾丸及卵巢组织的损伤程度。结果显示,雷公藤多苷片和雷公藤片高、中、低剂量均能不同程度改善CIA模型大鼠炎症关节的红、肿和畸形症状,降低临床积分,抑制关节滑膜炎症、血管翳、软骨侵蚀和骨破坏的病理变化,降低血清IgG含量,且有一定的剂量依赖关系,其中同倍剂量组相比,4倍雷公藤多苷片的效果明显优于雷公藤片(P<0.05),16倍更显著(P<0.01)。雷公藤多苷片和雷公藤片高剂量能明显升高CIA大鼠肝和脾脏的脏器系数(P<0.01)并降低RBC和HGB,严重者可致死亡,其中雷公藤多苷片比雷公藤片作用更显著(P<0.01);2种制剂高、中、低剂量给药均未见大鼠胃黏膜损伤以及肝肾形态学变化,但4倍和16倍能明显升高血清ALT和GGT并降低CRE水平(P<0.05或P<0.01);2种制剂均可不同程度造成CIA雄性大鼠精子畸形率并损伤睾丸曲细精管,其严重度随剂量和时间增加而增加,其中16倍雷公藤多苷片比同倍量雷公藤片作用更显著。雷公藤多苷片和雷公藤片口服均能有效延缓CIA大鼠发病并降低疾病严重度,但同时也能造成雄性生殖损伤,高剂量尚影响造血功能,极高剂量可致死,2种制剂均具有量-效-毒依赖关系,其中,雷公藤多苷片抗类风湿关节炎药效更好,高剂量毒性反应也更明显。相关结论为雷公藤制剂的临床合理用药提供实验参考,也有待进一步的临床研究去证实。

The aim of this paper was to compare the properties of Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets from dose-effect-toxicity on type Ⅱ collagen-induced arthritis( CIA) in rats. SD rats were randomly divided into eight groups,including normal group,model group,Tripterygium Glycosides Tablets groups( 1 times equivalent dose 0.009 g·kg-1,4 times equivalent dose 0.036 g·kg-1,16 times equivalent dose 0.144 g·kg-1),Tripterygium wilfordii Tablets groups( 1 times equivalent dose 0.007 5 mg·kg-1,4 times equivalent dose 0.030 mg·kg-1,16 times equivalent dose 0.120 mg·kg-1). Beginning on the first immunization,Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets administered intraperitoneally once a day. After the second immunization,the symptoms such as redness and swelling of joints were observed,and the clinical score and incidence of arthritis were evaluated. HE and Masson staining were used to examine the histopathological changes of joints. The expression level of anti-type Ⅱ collagen antibody Ig G in serum was detected by ELISA,routine testing of blood components,the concentration of ALP( alkaline phosphatase),ALT( alanine aminotransferase),AST( aspartate aminotransferase),GGT( gamma-glutamyltransferase),TBi L( total bilirubin),CRE( creatinine) and UREA( urea) in serum were detected by enzymatic assay. The rate of sperm deformity in the epididymis was evaluated under light microscope. The extent of damage to the testis and ovarian tissue was assessed by HE staining. Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets attenuated the inflammation,redness,swelling and deformity of joints and reduced the clinical score and incidence of arthritis in CIA rats. Meanwhile,it also exhibited obvious reduction in all pathological features such as joint synovitis,pannus,cartilage erosion and bone destruction. Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets reduced Ig G in a dose-dependent manner,and Tripterygium Glycosides Tablets is better than Tripterygium wilfordii Tablets( P<0.05 or P<0.01). The high doses of Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets could significantly increase the organ coefficient of liver and spleen and reduced RBC and HGB in CIA rats( P<0.01),and severity leading to death. Gastric mucosal injury and morphological changes of liver and kidney were not observed in CIA rats of Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets treatment group. The 4 and 16 times doses of Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets could significantly increase serum ALT,GGT and decrease CRE( P<0.05 or P<0.01). Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets could increase the sperm deformity rate and damage the testicular seminiferous tubules of CIA male rats. Severity increased with dose and time increasing. The effect of Tripterygium Glycosides Tablets( 16 times) is more significant than Tripterygium wilfordii Tablets( 16 times). Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets significantly delayed onset of arthritis and inhibited the paw edema and arthritic score. Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets also caused male reproductive damage,high dose affected hematopoiesis,and maximum dose leading to death. Tripterygium Glycosides Tablets and Tripterygium wilfordii Tablets all depended on dose-effect-toxicity manner. Anti-arthritis effect of Tripterygium Glycosides Tablets is better than Tripterygium wilfordii Tablets,but the toxicity of Tripterygium Glycosides Tablets maximum dose is more obvious. The relevant conclusions of our study will provide experimental references for clinical rational use of drugs,and further clinical studies are needed to confirm our conclusions.