化学因素诱发的多发性抽动症动物模型的比较研究

目的 通过对化学因素诱发的4种多发性抽动症(TS)模型效度的比较,为TS动物模型的选择应用提供理论和实验依据.方法 采用不同化学造模剂建立4种TS模型-AMP模型、APO模型、IDPN模型、DOI模型,通过自主活动次数、爬杆时间、脑纹状体单胺类递质检测,分别从模型的表面效度、预测效度、结构效度方面比较评价4种TS动物模型.结果 AMP模型组与空白组比较,自主活动次数增加(t=4.746,P=0.000),脑纹状体DOPAC含量升高[(0.99±0.18)ng/mg,P=0.029],NE含量下降[(0.11±0.033)ng/mg,P=0.012];APO模型组与空白组比较,爬杆时间延长(t=3.353,P=0.004),脑纹状体DA、5-HT含量升高[分别为(10.19±1.23)ng/mg,(0.54±0.08)ng/mg,P=0.019,P=0.002],DOPAC、HVA含量降低[分别为(0.63±0.11)ng/mg,(0.45±0.04)ng/mg,均P＜0.01];DOI模型组与空白组比较,脑纹状体DA、DOPAC、HVA含量下降[分别为(13.66±1.55)ng/mg,(0.80±0.11)ng/mg,(1.04±0.14)ng/mg,P=0.029,P=0.001,P=0.004];IDPN300组与空白组比较,脑纹状体5-HT含量升高[(0.77±0.09)ng/mg,P=0.031].结论 AMP模型表面效度短暂,IDPN模型表面效度稳定、持久,AMP模型、APO模型、DOI模型具有预测效度,AMP模型、APO模型、DOI模型、IDPN模型具有成为结构效度模型的潜能.

Comparative study of Tourette' s syndrome animal models induced by chemical factors

Objective To provide theoretical and experimental proof for selecting and implying Tourette's syndrome(TS) animal models, validities of four TS models induced by chemical factors were compared. Methods Four TS models,namely AMP model,APO model,DO1 model and IDPN model were built up by using different chemical modeling agents. Through detecting spontaneous movement, climbing time and monoamine transmitters levels in striatum, four TS animal models were compared and evaluated from three levels of validities-face, prediction,construct. Results Compared with control group, spontaneous movement times raised ( t = 4. 746, P =0. 000) and level of DOPAC ( (0.99 ± 0. 177 ) ng/mg) in striatum increased (P = 0.029 ), and level of NE in striatum decreased in AMP model group( (0.11 ± 0.033 )ng/mg, P = 0.012). Compared with control group, climbing time prolonged (P = 0. 004) and levels of DA ( ( 10. 19 ± 1.23 ) ng/mg), 5-HT ( ( 0. 54 ± 0.08 ) ng/mg) in striatum raised(P=0. 019, P=0. 002),at the same time ,levels of DOPAC( (0.63 ±0.11 )ng/mg),HVA ((0.45 ±0.04 ) ng/mg) in striatum reduced (P ＜ 0.01 ) in APO model group; Compared with control group, levels of DA ( ( 13.66 ± 1.55 ) ng/mg), DOPAC( (0.80 ±0. 11 ) ng/mg), HVA( ( 1.04 ± 0.14) ng/mg) grew downwards in striatum of DOI model mice(P=0.029,P=0.001, P= 0.004). Compared with control group, level of 5-HT in striatum increased in IDPN300 group ( (0.77 ± 0.09) ng/mg, P = 0.031 ). Conclusion Face validity of AMP model is temporal and that of IDPN model is steady and persistent. AMP model,APO model and DOI model possess predictive validity. AMP model,APO model,DOI model and IDPN model have potentiality of becoming construct validity model.