以舌为靶点的寒冷诱导血瘀证研究

目的:观察在寒冷刺激为主的多种方法诱导下出现血瘀证病理状态时模型动物舌象变化特征,探讨舌象作为血瘀证证候靶点和药物治疗靶点的证据。方法:主要采用反复冰水冷冻法诱导血瘀证模型,以数码相机采集实验动物舌象,观察血瘀证模型大鼠舌象的变化,以及舌质灰度值和舌部微血管超微结构对不同治法药物反应的差异。结果:血瘀证模型大鼠舌质紫暗;冰水冷冻组大鼠的舌质紫暗的稳定期为7d,冷冻后3d的舌质灰度值与正常组的差异最显著(P<0.01);冰水冷冻组大鼠舌质灰度值高于正常组(P<0.01)。给药实验参附组和血塞通组舌质灰度值低于模型组(P<0.01);电镜下,冰水冷冻组大鼠舌部微血管管腔狭窄皱缩,血管内皮细胞核增大,内皮细胞向管腔侧有微绒毛伸出,正常组、参附组和血塞通组无明显上述改变。结论:舌质紫暗程度和舌质灰度值可作为机体病理状态(血瘀证)轻重程度的预测指标,可能是药物治疗的新靶点。

Study on Blood-stasis Syndrome Induced by Cold:Target on the Tongue

Objectives:To observe the changes of the tongues in rats with blood-stasis syndrome induced mainly by cold. To explore the evidence that tongues were the target of blood stasis syndrome and the target of medication. Methods: Rats with blood-stasis syndrome induced by cold (BSC group) were dipped into ice water (0 ℃) for 5 minutes every day and lasted 20d individually. Different drugs were given orally after the model establishment. And then we took photos of tongues of all rats by digital camera, analyzed the gray scale value of all rats' tongues using image analysis software, and observed the capillaries in tongues by electron microscope. Results: The tongues of rats which had been frozen in ice water for 20 d (once a day) were dark purple, the same as that of models induced by chemical materials .While as for the normal rats, the tongues were lustrous and ruddy. The changes of color of the tongues persisted about 1 week and were great obvious at the 3rd day after the model establishment among different time-points. After given different drugs, the degree of dark purple tongue degraded, showed significant difference (P < 0.01) from that of model rats. The capillary stegnosis and nucleus turgescence of vascular endothelial cell were observed in tongues in BSC group by using electron microscope. After medication, the above changes recovered. Conclusion: The degree of dark purple tongue indicates the degree of diseases with blood-stasis syndrome. The tongue probably is a target of drug treatment.