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. 2015 Jan 8;8:447. doi: 10.3389/fncel.2014.00447

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Copyright © 2015 Megahed, Hattiangady, Shuai and Shetty.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Exposure to Gulf war illness related (GWIR) chemicals and stress leads to diminished neurogenesis in the hippocampus. Panels (A1) and (B1) illustrate the distribution of doublecortin-positive (DCX+) interneurons in the subgranular zone-granule cell layer (SGZ-GCL) of the DG from an age-matched naive control rat (A1) and a rat that was exposed to Gulf War illness related (GWIR) chemicals and stress 3 months earlier (B1). The panels (A2) and (B2) are magnified views of marked regions from (A1) and (B1) showing the morphology of DCX+ newly born neurons. Scale bar (A1) and (B1) = 100 μm; (A2) and (B2) = 50 μm. DH, dentate hilus; ML, molecular layer. The bar chart (C) compares numbers of newly born (DCX+) neurons in the DG between naive control rats and rats exposed to GWIR-chemicals and stress. *p < 0.05.