Expression patterns of AMOG in developing human cortex and malformations of cortical development

Epilepsy Research
K BoerEleonora Aronica

Abstract

Adhesion molecule on glia (AMOG) mediates neuronal migration during development and ion homeostasis. Recently, AMOG has been identified as a regulator of the Pi3K-mTOR signaling pathway. In the present study, we investigated the expression pattern of AMOG in human cortex during development and in focal malformations of cortical development. In the developing human cortex, AMOG expression was detected in the cortical plate at 13 gestational weeks and increased in later gestational ages. In adult human control cortex, a diffuse immunoreactivity pattern was observed for AMOG in the grey matter. In the white matter, AMOG was expressed in perivascular astrocytes. In focal cortical dysplasia (n=6) and cortical tubers (n=6), the diffuse AMOG expression pattern was reduced in the grey matter. However, AMOG immunoreactivity was observed in reactive astrocytes and strong perisomatic staining was detected in balloon and giant cells. Double-labeling showed co-localization of AMOG with the precursor cell marker CD34 and phosphorylated S6, used as a marker of mTOR activation. The AMOG expression pattern, with altered cellular distribution, observed in malformations of cortical development suggests that AMOG might contribute to the abnormal c...Continue Reading

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Citations

Jun 15, 2012·The Journal of Biological Chemistry·Elmira TokhtaevaOlga Vagin
Jul 19, 2013·Pediatric Neurology·John N Gaitanis, John Donahue
Apr 14, 2012·Brain Pathology·Eleonora AronicaRoberto Spreafico
Jun 4, 2016·Neuropathology and Applied Neurobiology·M KielbinskiZ Soltys
Apr 16, 2019·Urologia·Mauro RagoneseEmilio Sacco

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