ISSN 1662-4009 (online)

ey0019.3-1 | Mechanism of the year | ESPEYB19

3.1. Neonatal thyroxine activation modifies epigenetic programming of the liver

TL Fonseca , T Garcia , GW Fernandes , TM Nair , AC Bianco

Nat Commun. 2021 Jul 21;12(1):4446. doi: 10.1038/s41467-021-24748-8. PMID: 34290257Brief Summary: Jaundice is a major clinical sign of congenital hypothyroidism. LT4 treatment in hypothyroid neonates normalizes jaundice rapidly by inducing hepatocyte maturation. This mouse model study investigated the molecular mechanisms of thyroid hormone induced hepatocyte differentiation. A postnatal a...

ey0018.3-11 | New Genes | ESPEYB18

3.11. Human type 1 Iodothyronine deiodinase (DIO1) mutations cause abnormal thyroid hormone metabolism

MM Franca , A German , GW Fernandes , XH Liao , AC Bianco , S Refetoff , AM Dumitrescu

Thyroid. 2021;31:202–207. doi: 10.1089/thy.2020.0253.This study describes a new genetic thyroid disease that might be unnoticeable in individuals with normal thyroid synthetic capacity, but may cause harm in all patients who are dependent on levothyroxine substitution such as congenital hypothyroidism, acquired hypothyroidism, or post-thyroidectomy.Three iodothyro...