As inflammation was found to be associated with CA1 dendritic atrophy, we investigated the levels of the synaptic proteins PSD95 (postsynaptic), synaptophilin (postsynaptic spines) and synaptophysin (presynaptic vesicles) in the hippocampus of blast-exposed and control rats (13 months post-exposure). This evidence concerns the gene SYP and Atrophy.