title: [Intervention of selenium on injured type 1 deiodinase by excessive iodine in mice].
abstract: OBJECTIVE
  To study the mechanism of the damage resulted from iodine excess and to seek suitable selenium intervention dosage.
  
  
  METHODS
  160 BALB/c mice were divided into eight groups, the normal control group, the excessive iodine group (drunk the water containing potassium iodate 3000 microg/L) and six selenium groups (drunk the water containing potassium iodate 3000 microg/L and selenium 0.1, 0.2, 0.3, 0.4, 0.5 and 0.75 mg/L). The type 1 deiodinase (D1) activities and the levels of mRNA in liver, kidney and thyroid were determined by RT-PCR.
  
  
  RESULTS
  The mRNA levels of D1 restored to normal levels in all of the IS groups, while only 0.1-0.4 mg/L selenium supplement groups had normal activities of D1 in liver, kidney and thyroid.
  
  
  CONCLUSIONS
  Decline of D1 activities in liver, kidney and thyroid seems to be one of the reasons of the damage and should be chosen for effective intervention.
authors: Shenzhen Chronic Disease Hospital, Shenzhen 518020, China. anniexu73@126.com
authors: Jian
authors: J
authors: Xu
authors: Xuefeng
authors: X
authors: Yang
authors: Huailan
authors: H
authors: Guo
authors: Xiaoli
authors: X
authors: Liu
mesh_terms: D000818:Animals; D005260:Female; D007453:Iodide Peroxidase / Q000235:genetics / Q000378:metabolism*; D007455:Iodine / Q000008:administration & dosage* / Q000009:adverse effects* / Q000378:metabolism; D008099:Liver / Q000201:enzymology; D051379:Mice; D008807:Mice, Inbred BALB C; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D011897:Random Allocation; D012643:Selenium / Q000008:administration & dosage / Q000494:pharmacology*; D013961:Thyroid Gland / Q000201:enzymology
chemical_list: D012333:RNA, Messenger; D007455:Iodine; C109812:iodothyronine deiodinase type I; D007453:Iodide Peroxidase; D012643:Selenium