摘要
目的目前认为心房利钠因子或多肽(atrialnatriureticfactor,ANF)mRNA的表达水平可作为心脏疾病严重程度的诊断标准,研究2,3,7,8-四氯二苯并二噁英(2,3,7,8-tetrachlorodibenzo-p-dioxin,TCDD)作用下SD大鼠胎鼠及乳鼠心肌组织ANFmRNA表达变化特点,探讨TCDD是否对心脏功能产生一定影响。方法将实验动物分为0.05、0.5、5、10μg/kg4个实验组,采用RT-PCR半定量法,检测对照组及TCDD实验组胎鼠及乳鼠心肌组织ANFmRNA表达的变化。结果与对照组比较,实验组心脏组织中ANFmRNA的表达出现不同程度的增加。结论TCDD染毒可以使胎鼠及乳鼠心脏组织ANFmRNA表达升高,从而推测TCDD可能对心脏功能产生一定的损伤。
Objective To investigate the changes of ANF mRNA expression in the myocardial tissues of rat embryo and neonate induced by 2, 3, 7, 8-TCDD so as to determine if TCDD can cause injuries of cardiac functions. Methods SD rat embryos were divided into 4 groups respectively exposed to TCDD at the dose of 0. 05,0. 5, 5, 10 μg/kg. The mRNA expression of ANF/ANP in the myocardial tissues of rat embryos of day 15, 19 and suckling rats aged 5 days were detected by semiquantitative RT-PCR analysis. Results TCDD could up-regulate ANF mRNA expression in the myocardialtissues of rat embryos and suckling rats, as compared with control group. Conclusion TCDD can up-regulate ANF mRNA expression in myocardial tissues,suggesting that TCDD may cause injuries of cardiac functions of rat embryos and suckling rats.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2006年第16期1698-1700,共3页
Journal of Third Military Medical University