"Idiopathic" mental retardation and new chromosomal abnormalities

<p>Abstract</p> <p>Mental retardation is a heterogeneous condition, affecting 1-3% of general population. In the last few years, several emerging clinical entities have been described, due to the advent of newest genetic techniques, such as array Comparative Genomic Hybridization....

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Main Authors: El-Malhany Nadia, Lo-Castro Adriana, Galasso Cinzia, Curatolo Paolo
Format: Article
Language:English
Published: BMC 2010-02-01
Series:Italian Journal of Pediatrics
Online Access:http://www.ijponline.net/content/36/1/17
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author El-Malhany Nadia
Lo-Castro Adriana
Galasso Cinzia
Curatolo Paolo
author_facet El-Malhany Nadia
Lo-Castro Adriana
Galasso Cinzia
Curatolo Paolo
author_sort El-Malhany Nadia
collection DOAJ
description <p>Abstract</p> <p>Mental retardation is a heterogeneous condition, affecting 1-3% of general population. In the last few years, several emerging clinical entities have been described, due to the advent of newest genetic techniques, such as array Comparative Genomic Hybridization. The detection of cryptic microdeletion/microduplication abnormalities has allowed genotype-phenotype correlations, delineating recognizable syndromic conditions that are herein reviewed. With the aim to provide to Paediatricians a combined clinical and genetic approach to the child with cognitive impairment, a practical diagnostic algorithm is also illustrated. The use of microarray platforms has further reduced the percentage of "idiopathic" forms of mental retardation, previously accounted for about half of total cases. We discussed the putative pathways at the basis of remaining "pure idiopathic" forms of mental retardation, highlighting possible environmental and epigenetic mechanisms as causes of altered cognition.</p>
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spelling doaj.art-0ff8ecb13edf4613b228e1516aa545ac2022-12-21T21:20:52ZengBMCItalian Journal of Pediatrics1720-84241824-72882010-02-013611710.1186/1824-7288-36-17"Idiopathic" mental retardation and new chromosomal abnormalitiesEl-Malhany NadiaLo-Castro AdrianaGalasso CinziaCuratolo Paolo<p>Abstract</p> <p>Mental retardation is a heterogeneous condition, affecting 1-3% of general population. In the last few years, several emerging clinical entities have been described, due to the advent of newest genetic techniques, such as array Comparative Genomic Hybridization. The detection of cryptic microdeletion/microduplication abnormalities has allowed genotype-phenotype correlations, delineating recognizable syndromic conditions that are herein reviewed. With the aim to provide to Paediatricians a combined clinical and genetic approach to the child with cognitive impairment, a practical diagnostic algorithm is also illustrated. The use of microarray platforms has further reduced the percentage of "idiopathic" forms of mental retardation, previously accounted for about half of total cases. We discussed the putative pathways at the basis of remaining "pure idiopathic" forms of mental retardation, highlighting possible environmental and epigenetic mechanisms as causes of altered cognition.</p>http://www.ijponline.net/content/36/1/17
spellingShingle El-Malhany Nadia
Lo-Castro Adriana
Galasso Cinzia
Curatolo Paolo
"Idiopathic" mental retardation and new chromosomal abnormalities
Italian Journal of Pediatrics
title "Idiopathic" mental retardation and new chromosomal abnormalities
title_full "Idiopathic" mental retardation and new chromosomal abnormalities
title_fullStr "Idiopathic" mental retardation and new chromosomal abnormalities
title_full_unstemmed "Idiopathic" mental retardation and new chromosomal abnormalities
title_short "Idiopathic" mental retardation and new chromosomal abnormalities
title_sort idiopathic mental retardation and new chromosomal abnormalities
url http://www.ijponline.net/content/36/1/17
work_keys_str_mv AT elmalhanynadia idiopathicmentalretardationandnewchromosomalabnormalities
AT locastroadriana idiopathicmentalretardationandnewchromosomalabnormalities
AT galassocinzia idiopathicmentalretardationandnewchromosomalabnormalities
AT curatolopaolo idiopathicmentalretardationandnewchromosomalabnormalities