研究论文
孟紫强,桑楠,张波,孟光萌.二氧化硫体内衍生物诱发小鼠骨髓嗜多染红细胞微核的效应[J].环境科学学报,2000,20(2):239-243
二氧化硫体内衍生物诱发小鼠骨髓嗜多染红细胞微核的效应
- Micronuclei induced by SO2 derivatives in mouse bone marrow in vivo
- 基金项目:国家自然科学基金(No.39770634);山西省自然科学基金
- 孟紫强
- 山西大学生命科学系, 环境医学与毒理学研究所, 太原 030006
- 桑楠
- 山西大学生命科学系, 环境医学与毒理学研究所, 太原 030006
- 张波
- 山西大学生命科学系, 环境医学与毒理学研究所, 太原 030006
- 孟光萌
- 山西大学生命科学系, 环境医学与毒理学研究所, 太原 030006
- 摘要::通过微核试验证明,给小鼠腹腔注射SO2体内衍生物———亚硫酸钠和亚硫酸氢钠混合液(摩尔比:3∶1)可诱发小鼠骨髓嗜多染红细胞(PEC)微核形成,导致微核细胞率显著升高,且呈明确的剂量效应关系,从整体水平证明了SO2是染色体断裂剂和基因毒性因子.结果也指出,SO2衍生物对丝裂霉素C(MMC)诱发PCE微核有促进作用,而对环磷酰胺(CP)诱发微核有抑制效应,表明SO2对阳性致突变剂的影响是复杂的.
- Abstract:Micronuclei (MN) induced in the polychromatophilic erythroblasts (PCE) of mouse bone marrow by SO2 derivatives the mixture of sodium sulfite and bisulfite (3∶1mol/mol) were studied in vivo.It showed that the chemicals caused an increase of MN frequaencies in the PCE cells in a dose-dependent manner.The results also indicated that SO2 derivatives (Na2SO3 and NaHSO3) singnificantly inhibited mutagen cyclophosphamide (CP)-induced MN formation in the PCE cells of mouse bone marrow; however,the chemicals enhanced mutagen Mitomycin C (MMC) -induced MN formation in mouse PCE cells.These results imply that SO2 is a clastogenic and genotoxic agent,but the effects on mutagenesis of different mutagens are various.
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