初步探讨过敏性紫癜兔模型的构建
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Preliminary study about Establishment of rabbit model of allergic purpura
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    摘要:

    目的 通过构建过敏性紫癜动物模型,为该病治疗方法的评价和新药研发提供帮助。方法 通过热性药物的喂饮、腹腔注射卵白蛋白和弗氏完全佐剂生理盐水的混合液,持续抗原刺激后,耳缘静脉和背部皮内注射卵白蛋白生理盐水,激发过敏反应来构建过敏性紫癜模型。实验过程中分别进行一般症状观察;平均每天饮食,饮水量、体温、血常规、尿常规、便潜血等测量;皮肤、肾脏等脏器病理检测,并与人类疾病患者症状、实验室检查及病理改变相比较。结果 与对照组相比,模型组兔表现为皮肤瘀斑;每天进食减少、饮水增多(P<0.01),体温升高(P<0.05);血WBC增多(P<0.01),RBC减少(P<0.01),HGB、MCHC均降低(P<0.01),NEU,NEU%,EOS,EOS%均升高(P<0.01);67%尿蛋白、尿红细胞阳性,70%便潜血阳性;病理表现为皮下血管扩张充血、出血,真皮水肿,炎细胞浸润;肾小球局灶性慢性肾炎,囊腔蛋白渗出,血管扩张充血,系膜基质增多,系膜增厚,红细胞管型,炎细胞浸润等;关节腔淤血,结缔组织坏死,炎细胞浸润等;皮肤、肾IgA免疫球蛋白大量沉积等;胃粘膜出血,坏死脱落;小肠绒毛血管扩张充血,上皮细胞脱落;肺淤血,肥大细胞似有脱颗粒现象;肝灶性炎细胞浸润等,这些改变与人过敏性紫癜患者病变基本相似。结论 大耳白兔通过热性药物的喂饮,连续抗原刺激,静脉和皮内抗原冲击后,其症状、病理改变和实验室检查结果与人类过敏性紫癜病变基本相似,有望构建良好的过敏性紫癜兔模型。

    Abstract:

    Objective The allergic purpura animal model was successfully established, which will provide reference for evaluation of disease treatment and development of new drugs. Methods The model rabbits received oral thermal drug and intraperitoneal injection of ovalbumin and Freund’s complete adjuvant saline mixture, then ear marginal vein injection and subcutaneous injection of ovalbumin saline to stimulate allergic reactions; the rabbits in the control group received equivalent of normal saline in the same way. During the experimental process, several evaluations were performed: the observation of general symptom; the average amount measurement of daily diet, drinking water and body temperature; the detection of blood routine(BRT), urine routine(URT), Feces Occult Blood(FOB) test; the pathological examination of skin and kidney. Then, we compared the above indicators of rabbit models with clinical patients in the parts of symptom, laboratory examination and pathological changes. Results After the test, Compared with the control group , the rabbits in the model group performed skin ecchymosis; Less eating, more drinking (p<0.01); Increased temperature (p<0.05); the number of WBC increased and RBC decreased (p<0.01), the content of HGB, MCHC reduce (p<0.01) and NEU, NEU%,EOS,EOS% increased (p<0.05); URT test showed 67 percent rabbits of model group exist urine protein ( PRO), urine erythrocyte and 70 percent of them appear Feces Occult Blood (FOB); Pathological manifestation displayed subcutaneous vascular dilatation and congestion, hemorrhage, dermal edema, inflammatory cell infiltration; glomerular focal chronic nephritis, sac protein exudation, vascular dilatation and congestion, mesangial matrix increased, mesangial thickening, red blood cell tube type, infiltration of inflammatory cell; joint cavity extravasated blood, connective tissue necrosis, inflammatory cell infiltration; skin and renal IgA immunoglobulin deposit; gastric mucosal hemorrhage, necrosis and exfoliation; small intestinal villus vascular dilatation and congestion, and shedding of epithelial cells; Lung congestion, mast cells degranulation; hepatic focal inflammatory cells infiltration etc. The above results are similar to human disease. Conclusions Through the establishment of heat syndrome body in rabbits, with continuous antigenic stimulation, vein and intradermal antigen impact, we found that their symptom, pathology and auxiliary examination results are similar to human allergic purpura lesions. As a result, a more appropriate rabbit model of allergic purpura. is expected to be established in the future study.

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李彦红.初步探讨过敏性紫癜兔模型的构建[J].中国实验动物学报,2013,21(5).

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  • 收稿日期:2013-03-06
  • 最后修改日期:2013-05-20
  • 在线发布日期: 2013-10-18
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