Searchable abstracts of presentations at key conferences in endocrinology

ea0070yi2 | Young Investigators | ECE2020

Transcriptomic response of mouse thyroid to iodine by upregulating Nrf2-dependent and independent pathways

Chartoumpekis Dionysios , Ziros Panos , Habeos Ioannis , Kyriazopoulou Venetsana , Smith Adam , Marques Ana Claudia , Sykiotis Gerasimos

Introduction: Nrf2 (Nfe2l2) is a transcription factor that regulates a series of cytoprotective and antioxidant enzymes. Upon exposure to oxidative or electrophilic stress, Nrf2 enters the nucleus and induces its target genes expression. Follicular thyroid cells have physiologically high levels of reactive oxygen species as oxidation of iodine is essential for iodination of thyroglobulin and thyroid hormones synthesis. We have shown previously that Nrf2 pathway is active in th...

ea0070aep291 | Diabetes, Obesity, Metabolism and Nutrition | ECE2020

Nesfatin-1, an appetite-suppressing and anti-obesogenic neuropeptide, is decreased in the human brainstem of obese subjects.

Psilopanagioti Aristea , Makrygianni Maria , Nikou Sofia , Logotheti Souzana , Chartoumpekis Dionysios , Papadaki Helen

Background/Aims: Food intake is orchestrated by complex neuronal networksresiding in the forebrain, hypothalamus, and brainstem, via orexigenic and anorexigenic neuropeptides. Nesfatin-1, the amino-terminal fragment of nucleobindin 2, is a potent anorexigenic and anti-obesogenic neuropeptide, with widespread central distribution in rodents. In obese humans, our research group has recently reported reduced nesfatin-1 protein expression in the lateral hypothalamic area, a brain ...

ea0070aep965 | Thyroid | ECE2020

Constitutive activation of Nrf2 antioxidant pathway leads to age-dependent goiter and compensated hypothyroidism in mice

Chartoumpekis Dionysios , Ziros Panos , Renaud Cédric , Bongiovanni Massimo , Habeos Ioannis , Liao Xiao-Hui , Refetoff Samuel , Kopp Peter , Brix Klaudia , Sykiotis Gerasimos

Background: KEAP1 gene (Kelch-like ECH-associated protein 1) that encodes the main inhibitor of nuclear factor erythroid 2-related transcription factor 2 (Nrf2), a central mediator of antioxidant responses, has been found to be one of the mutated genes that lead to familial multinodular goiter (MNG). The proposed association of KEAP1 with familial MNG is based on only two loss-of-function mutations in respective Japanese families. To date, there is no experim...