“…A significant proportion of depressed patients display altered activity of the HPA axis, and stress generally leads to hypersecretion of corticosteroids, which imposes an increased risk for depression (Carroll et al, 1981;Nemeroff et al, 1984;Strohle and Holsboer, 2003;Brown et al, 2004;de Kloet et al, 2005;Antonijevic, 2006;Hen, 2006, 2004). Chronic treatment of rodents with corticosterone effectively induces multiple anxiety-and depression-like changes in behavior, neurochemistry and brain morphology (Ardayfio and Kim, 2006;Gourley et al, 2008;Murray et al, 2008;David et al, 2009).…”