dietary changes

I have a question for people who have stated that they have been helping their RA with dietary changes.  I have seen a lot of info stating that cutting out wheat is helpful, does anyone know what is the protein in the wheat that is suspected? I ask that because it would make a difference as to what grains are substituted.  I was recently started on enbrel because the MTX was not cutting it anymore.  I have also been trying to follow a whole grain vegetarian diet to lessen cardiovascular disease, since I have several other risk factors for that.  When I recently went for blood work my liver enzymes were elevated.  So I want to cut out my cholesterol med, anyway that brings me back to the question, what whole grains can be used if wheat is eliminated.  I can't live on brown rice and oatmeal.  Is spelt acceptable?  how about amaranth or barley?