不同镉离子浓度诱导饲养对参环毛蚓体腔细胞溶酶体膜的影响  

Effects of induced breeding with various ion concentrations of cadmium on the lysosomal membrane of coelomocytes in Pheretima aspergillum

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作  者:吴波[1] 李薇[3] 喻良文[3] 付玉梅[2] 

机构地区:[1]广州医学院药学系,510182 [2]广州医学院荔湾医院检验科 [3]广州中医药大学中药学院

出  处:《中华生物医学工程杂志》2010年第5期468-470,共3页Chinese Journal of Biomedical Engineering

基  金:国家自然科学基金(30772741);广东省自然科学基金(8151018201000043);广州市教育局科研基金(08A057)

摘  要:目的 观察不同浓度镉离子诱导饲养对参环毛蚓体腔细胞溶酶体膜的毒性效应.方法 选取健康参环毛蚓70只,按照饲养土壤镉离子浓度的不同随机分为7组,每组10只.各组土壤镉离子浓度分别为0.28(对照组)、3.28、6.28、12.28、18.28、24.28和30.28 mg/kg,采用不同浓度镉离子诱导参环毛蚓染毒并饲养14 d.诱导饲养7 d和14 d时观察参环毛蚓体腔细胞的形态变化,测定其体腔细胞溶酶体中性红保留时间.结果 高浓度镉离子诱导参环毛蚓体腔细胞溶酶体的损害明显.诱导饲养7 d,对照组、3.28、6.28、12.28、18.28、24.28和30.28 mg/kg镉离子浓度组参环毛蚓体腔细胞溶酶体中性红保留时间随着镉离子浓度的增加而逐渐缩短,分别为(71.3±2.4)、(60.5±1.6)、(55.1±2.9)、(51.9±3.6)、(46.0±2.5)、(38.8±1.8)、(34.2±2.0)min.与对照组比较,诱导饲养7 d、14d时各实验组参环毛蚓溶酶体中性红保留时间明显缩短(均P<0.05).结论 体腔细胞溶酶体中性红保留时间可用于评价土壤中重金属镉对参环毛蚓的毒性效应.Objective To investigate the toxicity effects of induced breeding with various ion concentrations of cadmium on the lysosomal membrane of coelomocytes in Pheretima aspergillum. Methods Seventy healthy Pheretima aspergilla were selected and randomized into 7 groups (n=10 each) according to different levels of cadmium ion in the soils [0.28 mg/kg (control group) , 3.28 mg/kg, 6.28 mg/kg, 12.28 mg/kg, 18.28 mg/kg, 24.28 mg/kg and 30.28 mg/kg, respectively] and were bred with the contaminating cadmium ions for 14 days. On day 7 and day 14, the morphological changes in coelomocytes were studied and neutral red retention time (NRRT) of coelomocyte lysosome was determined in Pheretima aspergilla.Results High levels of cadmium ion were associated with apparent damages to the coelomocyte lysosome in Pheretima asperillum. NRRT decreased along with increasing levels of cadmium ion by (71.3±2.4) min ,(60.5±1.6) min, (55.1±2.9) min, (51.9±3.6) min, (46.0±2.5) min, (38.8±1.8) min and (34.2±2.0) min in the groups containing 0.28 mg/kg (control group), 3.28 mg/kg, 6.28 mg/kg, 12.28 mg/kg, 18.28 mg/kg,24.28 mg/kg and 30.28 mg/kg cadmium on day 7. Compared with the control group, NRRT of other groups was significantly shorter on day 7 and day 14 (all P〈0.05). Conclusion NRRT can be used to evaluate the toxicity effects in Pheretima asperillum exposed to soils contaminated by metal cadmium.

关 键 词:参环毛蚓  溶酶体 土壤污染物 中性红保留时间 

分 类 号:X53[环境科学与工程—环境工程]

 

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