Abstract
目的 观察方格星虫提取物对y射线损伤雄性小鼠免疫器官及生殖器官的保护作用.方法 将50只雄性小鼠随机分为正常对照组、模型组及低[0.5g/(kg·d)]、中[1.0g/(kg·d)]、高[2.0g/(kg·d)]3个剂量方格星虫提取物组,每天灌胃给药1次,给药剂量为2.0 mL/kg,灌胃2周后,除正常对照组外,各组均以剂量率为0.83 Gy/h的60Co γ射线进行1次全身照射,照射剂量为5 Gy.于辐照前1 d,辐照后第3天、第14天测定小鼠体重、外周血白细胞数,辐照后第14天测定小鼠胸腺指数、脾指数、骨髓有核细胞计数、睾丸重量指数、精子总数及精子畸形率.结果 方格星虫提取物可使辐照后第3天3个剂量组小鼠外周血白细胞数明显高于模型组(P＜0.05),辐照后第14天3个剂量组小鼠的胸腺指数及脾指数明显高于模型组(P＜0.05),低、中剂量组小鼠的骨髓有核细胞数显著高于模型组(P＜0.05),高剂量组小鼠骨髓有核细胞数显著高于模型组(P＜0.01),中、高剂量组睾丸重量指数、精子总数明显高于模型组(P＜0.05),中、高剂量组的精子畸形率显著低于模型组(P＜0.01).结论 方格星虫提取物对辐射损伤小鼠的免疫器官及生殖器官具有一定的保护作用。
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