hrp0089fc4.2 | GH & IGFs | ESPE2018

Effects of IGF-1R Nuclear Localization in Glioblastoma Cells

Martin Ayelen , Clement Florencia , Venara Marcela , Bergada Ignacio , Gutierrez Mariana , Pennisi Patricia

Background: CNS tumors are the most frequent solid tumors in pediatric population. The IGF system of ligands and receptors are known to play an important role in both normal and neoplastic growth. Recently, we have shown that in paediatric gliomas, IGF-1R nuclear localization was significantly associated with both high grade tumours and increased risk of death, suggesting that nuclear IGF-1R localization may contribute to an aggressive behaviour of these tumours.<p class="...

hrp0082fc5.5 | Neuroendocrinology | ESPE2014

Characterization of IGFI Receptor Expression and Localization in Paediatric Gliomas Upon Diagnosis According to WHO 2007 Grading

Clement Florencia , Venara Marcela , Maglio Silvana , Martin Ayelen , Matho Cecilia , Petre Cesar , Lombardi Mercedes Garcia , Bergada Ignacio , Pennisi Patricia

Background: Gliomas are the most common subgroup of CNS tumours in children. Histologic grading is a means of predicting the biological behavior of these tumours and survival is strongly correlated with tumour gradation. The IGF system of ligands and receptors are known to play an important role in both normal and neoplastic growth. Recently, nuclear translocation of the type 1 IGF1R has been demonstrated in tumour tissues. Although the IGF1R expression has been described in C...

hrp0094p2-261 | Growth hormone and IGFs | ESPE2021

Increased height and IGF1 serum levels in children with non-neurofibromatosis type 1 gliomas

Clement Florencia , Castro Sebastian , Dech Gaston , Martin Ayelen , Celia Fernandez Maria , Gabriela Ropelato Maria , Bergada Ignacio , Gabriela Ballerini Maria , Pennisi Patricia ,

Introduction: Gliomas are the most common solid tumours during childhood. In children with neurofibromatosis Type 1 (NF1) and optic pathway glioma (OPG), growth hormone excess has been described. However, this phenomenon has not been reported in children with OPG without NF1. We aimed to describe the growth and IGFs/IGFBP3 levels in a large cohort of paediatric patients with non-NF1- associated central nervous system (CNS) tumours.Method...