癌变·畸变·突变 ›› 1999, Vol. 11 ›› Issue (4): 165-167.doi: 10.3969/j.issn.1004-616x.1999.04.003

• 论著 • 上一篇    下一篇

胆碱受体拮抗剂在小鼠骨髓细胞中的C- 有丝分裂效应研究

和智君 李晓琼 汪 旭   

  1. 云南师范大学 生命科学系 昆明 650092
  • 收稿日期:1998-11-20 修回日期:1999-03-17 出版日期:1999-07-30 发布日期:1999-07-30

C - MITOSIS INDUCTION BY ANTAGONISTS TO CHOLINERGIC RECEPTOR IN MOUSE BONE MARROW CELLS

He Zhijun , Li Xiaoqiong , Wang Xu   

  1. Department of L if e Sciences , Y unnan Normal University , Kunming  650092
  • Received:1998-11-20 Revised:1999-03-17 Online:1999-07-30 Published:1999-07-30

摘要: 本文分别对毒蕈碱型、烟碱型乙酰胆碱受体拮抗剂阿托品和筒箭毒碱在小鼠骨髓细胞中的C - 有丝分裂效应做了初步探讨,从而为该类化合物诱发非整倍体的可性和途径机制研究提供初步实验资料。实验用阿托品和筒箭毒碱,最高剂量为70 %LD50。结果发现,阿托品在最高剂量组(5. 2mg/ kg) 分别导致小鼠骨髓细胞有丝分裂指数和C - 有丝分裂频率显著升高( P < 0.001 , P < 0.05) 、有丝分裂后期细胞频率显著下降( P <0 .001) 。在受试剂量范围内,未发现筒箭毒碱具有类似效应(0.063 - 0. 125mg/ kg) 。毒蕈碱型乙酰胆碱受体拮抗剂阿托品在小鼠骨髓细胞中的C - 有丝分裂效应提示乙酰胆碱受体的正常功能与细胞有丝分裂的真实、准确性有一定关系,胆碱受体功能的异常可能为非整倍体产生的机制之一。

关键词: 乙酰胆碱爱体拮抗剂, C - 有丝分裂, 非整倍体, 小鼠骨髓细胞

Abstract: The study investigated the C - mitotic effect s in mouse bone marrow cells induced by at ropine and dtubocurarine , which are antagonist s to muscarinic and nicotinic receptors , respectively. The doses used in the experiment s were 70 % LD50. The result s showed that the at ropine (highest dose , 5. 2mg/ kg) significantly induced increases of mitotic index(MI) and colchicine2mitotic frequency ( P < 0. 001 , P < 0. 05) , the f requency of anaphase was decreased ( P < 0. 001) . It is reqsonable to hypothesize that acetylcholine and it s receptor take part in the regulation of mitosis in mouse bone marrow cells. As C2mitotic effect s is a kind of sign for aneuploidy induction.

Key words: Antagonist s to acetylcholine receptor, C-mitosis, aneuploidy, mouse bone marrow cells