I'm not sure how old this interview is, but Prof Thomas Borody is treating Crohn's Disease with long-term antibiotics in Sydney. Crohn's is still widely considered to be an auto-immune disease (as is IC/PBS). Crohn's treatment has traditionally involved managing inflammation, not the cause of the inflammation (bacteria). Sound familiar?
Prof Borody explains the disease is caused by an intracellular bacteria which is linked to Johne's disease in cattle and sheep and can be acquired by human's through sheep meat and cow's milk. The body's immune response sends white blood cells to deal with the foreign invader, which causes an inflammatory response. Again, sound familiar?
This particular intracellular bacteria divides very slowly and can only be killed by antibiotics when it's active. Therefore, long-term antibiotics is what's needed.
Prof Barry Marshall will be familiar with Prof Borody's work, as he was once part of the h.pylori team. It would be interesting to hear if he thinks there are any similarities with these diseases.
http://healthprofessionalradio.com.au/2016/03/09/health-service-hospital-management-segment-map-us/