摘要
本文用细胞化学的方法证实了在不加培养基的狗和猴离体血液中,淋巴细胞形志及Acp活力在24小时内仍能保持正常。在上述条件的基础上得出了离体血液丙线200、300、400及600拉德照射后,淋巴细胞Acp活力“4”分型改变与辐射剂量相关的方程。 文中还就离体血液丙线照射后Acp活力测定应用于生物剂量估算、某些抗放药物效价的验证以及照射后淋巴细胞Acp活力改变的机理作了初步讨论。 作者曾在丙线外照射中小剂量诊断指标的研究过程中,观察到家免的外周血液淋巴细胞酸性磷酸酯酶(Acp)活力与受照剂量之间存在线性关系 (顾远锡,1980)。以后又发现具有抗放作用的胰岛素对丙线照射狗的外周血液淋巴细胞Acp活力有一定的保护作用 (顾远锡,1980)。这些结果提示,外周血液淋巴细胞Acp活力的测定有可能作为受照剂量的估算方法,并可用来判断某些抗放药物的效价。后经动物实验证实了上述设想 (顾远锡,1981)。剂量估算方法和药物效价判断的应用,其主要对象是人,但是在人身上是无法进行整体照射情况下淋巴细胞Acp活力的剂量—效应关系的研究。
In the abcence of a routine culture medium, the morphology and ACP activity of dog and monkey blood lymphocytes were proved to be normal cyto-chemically within 24 hour incubation. After in vitro irradiation the blood lymphocyte ACP activity of dog and monkey was determined. The doses used in calibration were 200, 300, 400 and 600 rads respectively. A regression equation was obtained from the correlation between the lymphocyte ACP "4" type and their radiation dosage. In addition, the applicability of ACP activity determination after in vitro irradiation to the biological dosimetry, to the evaluation of the efficacy of certain radioprotectors and the mechanism of ACP activity changes after in vitro irradiation were preliminarily discussed.
作者
顾远锡
Gu Yuan Xi(Institute of Radiation Medicine, Academy of Military Medical Sciences)
