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时间:2019-03-06
《丙硫氧嘧啶对大鼠甲状腺tpo、tg mrna表达的影响》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、四川大学学报(医学版)2O10JSi;41(3):428—431chuanUniv(MedSciEdi)。。一,。‘、。-丙硫氧嘧啶对大鼠甲状腺TPO、TgmRNA表达的影响商维维,罗建,程薇波△,黄芹。,王文冬1.四川大学华西公共卫生学院病理学教研室(成都610041);2.四川大学华西第二医院病理科(成都610041)【摘要】目的探讨甲状腺干扰物丙硫氧嘧啶(propylthiouracil,PTU)对大鼠甲状腺功能影响的作用机理及代偿进程。方法雄性SD成年大鼠140只,PTU~5.0mg/(kg·d
2、)3灌胃染毒,分别设染毒3d、6d、9d、12d、15d、l8d、21d染毒组和同期对照组,每组1O只大鼠,在染毒期满后处死动物,采用RT-PCR检测甲状腺过氧化物酶(TPO)和甲状腺球蛋白(Tg)mRNA的表达,电化学发光法检测血清甲状腺激素水平。结果与对照组相比,各染毒组TPOmRNA的表达增强,TgmRNA的表达减弱(P均3、状腺的干扰机制,可能涉及抑制的转录。TSH水平增高对TPO基因的转录刺激作用,不能起到充分的代偿作用。【关键词】丙硫氧嘧啶甲状腺过氧化物酶甲状腺球蛋白【中图分类号】R114EffectofPTUontheExpressionofThyroidTPO,TgmRNAinRatsSHANGWei-wei,LUOJian,CHENGw一60,HUANGQin。,WANGwe—dong.1.DepartmentofPatholgy,W。“ChinaSchoolofPublicHealth,SichuanUnive4、rsity,Chengdu610041,China;2.DepartmentofPatholgy,肌时ChinaSecondHospital,SichuanUniversity,Chengdu610041,China△Correspondingauthor,E-mail:marychong@126.com[Abstract]ObjectiveToexplorethemechanismandthecompensationproceedingofthyroidhyperplasiacausedbyPTU.M5、ethodsPTUwasadministeredtoratsbygavageatadoseof5.0mg/kgB.Wfor3,6,9,12,15,18,21daysrespectively.A1lanimalsweresacrificedafterthelastdosage,andtheexpressionofTPOandinthyroidwasdetectedbyRT-PCR.Theserumthyroidhormonesweremeasuredbyehemoluminescenee.ResnltsC6、omparedwiththecontrolgroup,theTPOmRNAlevelsofPTUgroupswereincreased,whiletheYgmRNAlevelsweredecreasedsignificantly.SerumTT3,TT4inratstreatedwithPTUdemonstratedadescendingtrend,whileserumTSHshowedanascendingtrend,andthesignificantdifferenceswereobservedaf7、ter6daystreatingwithPTU.ConclusionTheinterferenceofPTUonthyroidmayrelatetoinhibitonofTggenetranscription.TheenhancementofTPOgenetranscriptioncan’tcompensatethethyroidfunctionsufficiently.[Keywords]PTUThyroidperoxidase(TPO)Thyroglobulin(Tg)丙硫氧嘧啶(propylthi8、ouracil,PTU)是通过引过信号转导途径促进TP0、等基因的转录而具起血清甲状腺激素水平下降,TSH反馈性增高,从有代偿意义[4],但目前尚无其代偿的强度和代偿而导致甲状腺肿形成的甲状腺激素干扰物n]。对于进程的研究报道。张素才等嘲曾以PTU5.0mg/PTU引起甲状腺激素水平下降,国内外学者通常认(kg·d)染毒大鼠12d,成功建立甲状腺增生的动为,主要与PTU抑制甲状腺过氧化酶(thyroid物模型,鉴于此,本次实验仍以该剂量染毒
3、状腺的干扰机制,可能涉及抑制的转录。TSH水平增高对TPO基因的转录刺激作用,不能起到充分的代偿作用。【关键词】丙硫氧嘧啶甲状腺过氧化物酶甲状腺球蛋白【中图分类号】R114EffectofPTUontheExpressionofThyroidTPO,TgmRNAinRatsSHANGWei-wei,LUOJian,CHENGw一60,HUANGQin。,WANGwe—dong.1.DepartmentofPatholgy,W。“ChinaSchoolofPublicHealth,SichuanUnive
4、rsity,Chengdu610041,China;2.DepartmentofPatholgy,肌时ChinaSecondHospital,SichuanUniversity,Chengdu610041,China△Correspondingauthor,E-mail:marychong@126.com[Abstract]ObjectiveToexplorethemechanismandthecompensationproceedingofthyroidhyperplasiacausedbyPTU.M
5、ethodsPTUwasadministeredtoratsbygavageatadoseof5.0mg/kgB.Wfor3,6,9,12,15,18,21daysrespectively.A1lanimalsweresacrificedafterthelastdosage,andtheexpressionofTPOandinthyroidwasdetectedbyRT-PCR.Theserumthyroidhormonesweremeasuredbyehemoluminescenee.ResnltsC
6、omparedwiththecontrolgroup,theTPOmRNAlevelsofPTUgroupswereincreased,whiletheYgmRNAlevelsweredecreasedsignificantly.SerumTT3,TT4inratstreatedwithPTUdemonstratedadescendingtrend,whileserumTSHshowedanascendingtrend,andthesignificantdifferenceswereobservedaf
7、ter6daystreatingwithPTU.ConclusionTheinterferenceofPTUonthyroidmayrelatetoinhibitonofTggenetranscription.TheenhancementofTPOgenetranscriptioncan’tcompensatethethyroidfunctionsufficiently.[Keywords]PTUThyroidperoxidase(TPO)Thyroglobulin(Tg)丙硫氧嘧啶(propylthi
8、ouracil,PTU)是通过引过信号转导途径促进TP0、等基因的转录而具起血清甲状腺激素水平下降,TSH反馈性增高,从有代偿意义[4],但目前尚无其代偿的强度和代偿而导致甲状腺肿形成的甲状腺激素干扰物n]。对于进程的研究报道。张素才等嘲曾以PTU5.0mg/PTU引起甲状腺激素水平下降,国内外学者通常认(kg·d)染毒大鼠12d,成功建立甲状腺增生的动为,主要与PTU抑制甲状腺过氧化酶(thyroid物模型,鉴于此,本次实验仍以该剂量染毒
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