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目的研究吗啡对CD8+ T细胞功能的影响以及对小鼠黑色素瘤肿瘤生长和PD-1抗体免疫治疗效果的影响。方法体外激活CD8+ T细胞，并给予不同浓度的吗啡刺激，流式细胞术分析CD8+ T细胞激活和分泌IFN+的情况；雌性C57小鼠接种小鼠黑色素瘤肿瘤细胞，接种第7天开始腹腔注射中等剂量的吗啡，检测肿瘤体积的变化，观察小鼠黑色素瘤生长曲线和小鼠生存曲线；雌性C57/BL6小鼠接种小鼠黑色素瘤肿瘤细胞，连续腹腔注射给予PD-1抗体3次，同时腹腔注射中等剂量的吗啡，检测肿瘤体积的变化和小鼠生存曲线。结果与对照组相比，中、高剂量吗啡可以显著抑制CD8+ T细胞的激活和IFN+的分泌（P P P + T细胞的激活和功能有关。

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