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作 者:周德俊[1] Robert Zhong
机构地区:[1]天津医科大学肿瘤医院内镜室,天津300060 [2]Department of Surgery,The University of Western Ontario
出 处:《天津医科大学学报》2009年第4期671-674,共4页Journal of Tianjin Medical University
摘 要:目的:检测LF15-0195联合环胞霉素A(CsA)治疗的相互作用。方法:在C57BL/6对BALB/c小鼠同种异位心脏移植模型中检测:(1)剂量相关作用对移植物存活的影响。(2)对长期存活的小鼠进行供体和第三方皮肤移植物移植用以评价其免疫耐受的状态。(3)LF联合应用CsA检测它们对移植物存活的相互作用。结果:单独应用高剂量LF(>2mg/kg)可以诱导特种供体的手术免疫耐受。同时应用高剂量CsA(15mg/kg)可以阻止由LF(2mg/kg)诱导的免疫耐受。相反,短期应用LF(1mg/kg)并联合应用低剂量CsA(5mg/kg)可成功诱导BALB/c小鼠心脏移植物长期存活(>100days)。结论:单独应用高剂量LF(>2mg/kg)可以诱导特种供体的手术免疫耐受。同时应用高剂量CsA可以阻止由LF诱导的免疫耐受,短期应用LF明显地减少了对CsA的需求量以防止免疫排斥。Objective: To determine LF 15-0195 interaction with Cyclosporine A (CsA). Methods: A C57BL/6 to BALB/c heterotopic heart allograft model was utilized to determine: (1) dose response. (2) tolerance induction using donor and third party skin grafts into long-term survivors. (3) efficacy of LF when combined with CsA therapy. Results: High dose of LF (〉2 mg/kg) induced donor specific tolerance. Simultaneous administration of high dose CsA (15 mg/kg) with LF therapy had a detrimental effect on graft survival compared to 2 mg/kg LF therapy alone (41.5±5.9 days vs 〉100 days). In contrast, subtherapeutic CsA (5 mg/kg) which did not prolong survival if given alone (MST 10±3 days) produced indefinite survival (〉100 days) if given after LF therapy (1 mg/kg). Conclusion: High dose of LF (〉2 mg/kg) induces donor specific tolerance. High dose of CsA inhibits tolerance induced by LF. A short course of LF followed by subtherapeutic dose of CsA achieves indefinite survival and decreases dose of CsA to prevents rejection.
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