Findings References Humans FMR1 Patients with fragile X syndrome often display autistic traits Levitas et al. [133 ] Brown et al. [134 ] NRL4X/NRL3 Point mutations in NRL4X and NRL3 associated with X-linked autism Jamain et al. [135 ] Point mutations in NRL4X in nonsyndromic autism Laumonnier et al. [136 ] SHANK3 Mutations in SHANK3 in nonsyndromic autism Durand et al. [137 ] Gauthier et al. [138 ] Moessner et al. [139 ] SHANK2 Mutations in SHANK2 in nonsyndromic autism Berkel et al. [140 ] NRXN1 Mutations in NRXN1 nonsyndromic autism Szatmari et al. [141 ] Kim et al. [142 ] GAD65/67
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levels of GAD65/67 in cortexFatemi et al. [143 ] Dlx1/2 Polymorphisms in Dlx1/2 with increased susceptibility to autism Liu et al. [144 ] 15q11-13 Maternal duplications in 15q11-13 in nonsyndromic autism Baker et al. [145 ] including GABRA5 , GABRG3 , GABRB3 (GABAA R subunits) Hogart et al. [146 ] MECP2 Mutations in MECP2 explain the majority of Rett syndrome. Amir et al. [147 ] Patients display autistic behaviors. Buyse et al. [148 ] MET Polymorphisms in MET promoter associated with autism Jackson et al. [149 ] Susceptibility locus for autism at 7q31 includes MET gene. Campbell et al. [150 ] Mice Fmr1 Fmr1 k/o: behavioral anomalies improve with glutamatergic antagonistsDolen et al. [151 ] Bear et al. [152 , 153 ] Neuroligins/ neurexins NRL1/2 expression in nonneuronal cells trigger synapse formation in presynaptic cells Scheiffele et al. [154 ] NL-1 overexpression in hippocampal neurons promotes assembly of excitatory and inhibitory synapses and knock-down results in loss of inhibitory > excitatory synapses Chih [155 ] Presynaptic β -neurexin induces GABA and glutamate synapse differentiation in postcell Graf et al. [156 ] NRL1,3,4 localise at glutamatergic synapses, NRL2 at both excitatory and inhibitory Graf et al. [156 ] MecP2 Binds methylated CPG islands and exerts epigenetic control of UBE3A and GABR3 Samaco et al. [157 ] Interneuron selective loss of MecP2 recapitulates the Rett-like behavioral aN in mice Chao et al. [158 ] uPAR, HGF, MET uPAR−/− displays 50% loss of IN in cortex and seizure susceptibilityPowell et al. [11 ] uPAR is required for the processing of HGF (an interneuron motogen), Powell et al. [159 ] HGF, through its receptor MET, can rescue the phenotype of uPAR−/− mice Bae et al. [160 ] Interneuron selective MET ablation:
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PV cortex,
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striatal PV cells, disrupts reversal learning Martins et al. [161 ]