madness mechanism

a paper in this week's pnas describes a possible mechanism for why fluoxetine (of prozac fame) effectively combats depression. in particular, the dudes find neurogenesis among a certain class of progenitor cells, as opposed to dentate gyral cells, using a mouse reporter strain. see nice lay coverage in new scientist.

i usually steer clear of hype-generating, easily-accepted-by-major-journals, stem cell papers since they're often just observational, but SSRIs are of personal interest...