包头医学院学报
包頭醫學院學報
포두의학원학보
JOURNAL OF BAOTOU MEDICAL COLLEGE
2014年
4期
9-11
,共3页
杨飞玉%王丽%高艳荣%米亚柯%张永明
楊飛玉%王麗%高豔榮%米亞柯%張永明
양비옥%왕려%고염영%미아가%장영명
氯化镧%微核%遗传毒性%氧化损伤
氯化鑭%微覈%遺傳毒性%氧化損傷
록화란%미핵%유전독성%양화손상
Lanthanum chloride%Micronucleus%Genetic toXicity%OXidatiVe damage
目的:研究氯化镧短期重复染毒对ICR小鼠产生的遗传毒性和氧化损伤;方法:ICR小鼠随机分为对照组、低剂量组和高剂量组,分别给予0 mg/kg、20 mg/kg、200 mg/kg氯化镧,连续灌胃7 d,测定外周血淋巴细胞微核,取脏器分别测定丙二醛( malondiadehyde,MDA)、谷胱甘肽( glutathione,GSH)、超氧化物歧化酶( SuperoXide dismutase,SOD)的含量。结果:高剂量组微核率显著高于对照组( P <0.05);镧元素在心脏、肝脏、脾脏和肾脏的蓄积量,高剂量组与低剂量组和对照组相比差异均有统计学意义( P <0.05);高剂量组小鼠脾脏、肾脏组织中MDA含量高于对照组( P <0.05);高剂量组小鼠脾脏、肾脏中 GSH、T -SOD 含量低于低剂量组和对照组( P <0.05)。结论:氯化镧经口染毒剂量在200 mg/kg时可在各脏器中蓄积,且可引起小鼠脏器发生氧化损伤和骨髓微核率的增加,提示200 mg/kg氯化镧对小鼠有一定的遗传毒性,氧化损伤可能是其引起遗传毒性的机制之一。
目的:研究氯化鑭短期重複染毒對ICR小鼠產生的遺傳毒性和氧化損傷;方法:ICR小鼠隨機分為對照組、低劑量組和高劑量組,分彆給予0 mg/kg、20 mg/kg、200 mg/kg氯化鑭,連續灌胃7 d,測定外週血淋巴細胞微覈,取髒器分彆測定丙二醛( malondiadehyde,MDA)、穀胱甘肽( glutathione,GSH)、超氧化物歧化酶( SuperoXide dismutase,SOD)的含量。結果:高劑量組微覈率顯著高于對照組( P <0.05);鑭元素在心髒、肝髒、脾髒和腎髒的蓄積量,高劑量組與低劑量組和對照組相比差異均有統計學意義( P <0.05);高劑量組小鼠脾髒、腎髒組織中MDA含量高于對照組( P <0.05);高劑量組小鼠脾髒、腎髒中 GSH、T -SOD 含量低于低劑量組和對照組( P <0.05)。結論:氯化鑭經口染毒劑量在200 mg/kg時可在各髒器中蓄積,且可引起小鼠髒器髮生氧化損傷和骨髓微覈率的增加,提示200 mg/kg氯化鑭對小鼠有一定的遺傳毒性,氧化損傷可能是其引起遺傳毒性的機製之一。
목적:연구록화란단기중복염독대ICR소서산생적유전독성화양화손상;방법:ICR소서수궤분위대조조、저제량조화고제량조,분별급여0 mg/kg、20 mg/kg、200 mg/kg록화란,련속관위7 d,측정외주혈림파세포미핵,취장기분별측정병이철( malondiadehyde,MDA)、곡광감태( glutathione,GSH)、초양화물기화매( SuperoXide dismutase,SOD)적함량。결과:고제량조미핵솔현저고우대조조( P <0.05);란원소재심장、간장、비장화신장적축적량,고제량조여저제량조화대조조상비차이균유통계학의의( P <0.05);고제량조소서비장、신장조직중MDA함량고우대조조( P <0.05);고제량조소서비장、신장중 GSH、T -SOD 함량저우저제량조화대조조( P <0.05)。결론:록화란경구염독제량재200 mg/kg시가재각장기중축적,차가인기소서장기발생양화손상화골수미핵솔적증가,제시200 mg/kg록화란대소서유일정적유전독성,양화손상가능시기인기유전독성적궤제지일。
ObjectiVe:To inVestigate the genetic toXicity and oXidatiVe damage caused by short-term-repeated eXposure to lanthanum chloride in ICR mice. Methods:ICR mice were randomly diVided into the control group,the low-dose lanthanum chloride group and the high dose- lanthanum chloride group. The mice in the three groups were then giVen by gaVage 0 mg/kg, 20 mg/kg,and 200 mg/kg of lanthanum chloride,respectiVely,for 7 days consecutiVely. Micronucleus frequency in the periph-eral lymphocytes,as well as MDA,GSH and SOD in the tissues was determined. ResuIts:Micronucleus frequency in the high-dose group was significantly higher than that in the control group( P <0. 05). There was statistically significant difference in the stock Volume of lanthanum in the heart,liVer,spleen and kidney among high-dose,low-dose group and the control group (P < 0· 05). MDA content in the spleen and kidney of the mice in the high-dose group was also significantly higher than that in the control group( P <0. 05),while GSH and T-SOD contents in the spleen and kidney of the mice in the high- dose of lanthanum chloride were lower,compared with the low-dose group and the control group( P <0. 05). ConcIusion:Lanthanum chloride may deposit in eVery organ when it reaches the amount of 200 mg/kg per os,resulting in oXidatiVe damage to mice organs and increases in micronucleus rate. There is a hint that 200 mg / kg of lanthanum chloride could bring about genetic toXicity to certain degree on mice,and oXidatiVe damage may be one of the mechanisms causing genetic toXicity.