http://www.healthcanal.com/digestive-system/irritable-bowel-syndrome/65182-selfish-bacteria-link-ibd-and-gut-microbiota-changes.html
Good find. Another piece of the puzzle, been saying for years excess mucinase/protease is part of the problem.
Here is the whole paper.
Old Mike
http://www.nature.com/ncomms/2015/150708/ncomms8624/full/ncomms8624.html