henry copeland:

Men and women have opposite genetic alterations in depression: A study examines the sex-specific molecular changes in major depressive disorder -- ScienceDaily

Most of the genes that had altered expression were changed in only men or only women. However, genes that were altered in both men and women were changed in opposite directions. Women had increased expression of genes affecting synapse function, whereas men had decreased expression of the same genes. Women had decreases in genes affecting immune function, whereas men had increased expression of these genes. Additionally, the researchers applied their methods to data from a different set of subjects and replicated the opposing changes.
- www.sciencedaily.com