2005
DOI: 10.1007/s00228-005-0056-0
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Alteration of thyroid hormone homeostasis by antiepileptic drugs in humans: involvement of glucuronosyltransferase induction

Abstract: Concerning the antiepileptic drugs which alter thyroid hormone homeostasis, it is highly probable that the mechanism of induction of uridine diphosphate glucuronosyltransferases (UGT) is involved, at least partially, in such an alteration. However, it is not possible to estimate the relative contribution of the UGT induction by these drugs on the total alteration observed in thyroid hormone levels, as other mechanisms not investigated, or not examined in the present article, could contribute.

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Cited by 72 publications
(68 citation statements)
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“…Despite low levels of T4 glucuronide in serum, the role of T4 glucuronidation in vivo is supported by alteration of thyroid hormone homeostasis in antiepileptic drug-treated patients [52]. (iii) UGTs such as UGT1A1 and UGT2B7 appear to be involved in homeostasis and further metabobolism of estradiol in endometrium [53].…”
Section: Bilirubin Ugt Polymorphism Ugt1a1*28mentioning
confidence: 99%
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“…Despite low levels of T4 glucuronide in serum, the role of T4 glucuronidation in vivo is supported by alteration of thyroid hormone homeostasis in antiepileptic drug-treated patients [52]. (iii) UGTs such as UGT1A1 and UGT2B7 appear to be involved in homeostasis and further metabobolism of estradiol in endometrium [53].…”
Section: Bilirubin Ugt Polymorphism Ugt1a1*28mentioning
confidence: 99%
“…T4 sulfate is very unstable because sulfation accelerates inner ring deiodination by approximately 200-fold [51]. T4 glucuronidation (carried out by UGT1A1 and 1A3) leads to a stable T4 glucuronide which may serve as a mechanism of delivery of T4 into intracellular compartments, as discussed in chapter 5.1 [51,52]. However, the postulated uptake of circulating T4 glucuronide into target cells and its hydrolysis by cellular β-glucuronidases needs to be further studied.…”
Section: Role Of Er-localized β-Glucuronidase In Glucuronide Dispositionmentioning
confidence: 99%
“…Essas alterações nos níveis dos hormônios tireoidianos sem mudanças nos níveis de TSH sugerem alteração central associada e não são totalmente compreendidas. Alguns estudos sugerem que elas poderiam ser causadas pelo efeito inibitório das drogas ao TRH, o qual já foi demonstrado em animais, porém ainda não comprovado em humanos (43). Além do efeito hepático, as DAE podem afetar a homeostase tireoideana por outros mecanismos.…”
Section: Dae E Função Tireoideanaunclassified
“…Levetiracetam, tiagabine, lamotrigina e vigabatrina não afetam (ou modificam minimamente) os níveis de T3 e T4. Há poucos dados disponíveis na literatura sobre potenciais interações do topiramato, gabapentina, felbamato, pregabalina e zonisamida sobre a produção, liberação e metabolismo dos hormônios tireoideanos (43). Em dois estudos clínicos, o uso de carbamazepina e oxcarbazepina associou-se à redução nos níveis de hormônios tireoideanos, que foram reversíveis com a suspensão das medicações (45,46).…”
Section: Dae E Função Tireoideanaunclassified
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