Can ulcerative colitis, lialda (mesalamine), and omeprazole cause erectile dysfunction?

Complicated question: Inflammatory bowel disease, such as ulcerative colitis & Crohn's disease, is a complicated illness linked to many other conditions eg erectile dysfunction. It's unclear if IBD or its treatment/complications causes ED. ED is a rare side effect of omeprazole (http://www.drugs.com/sfx/omeprazole-side-effects.html) but I couldn't find any link w/Lialda http://www.drugs.com/sfx/lialda-side-effects.html