BGLAP and diabetes mellitus: The reason for the stronger correlation between Ruminococcus gnavus and OCN-expressing immature EPCs in diabetic than non-diabetic patients was unclear; however, a recent study indicated that strain-specific differences in fucosidases in Ruminococcus gnavus might be contributory to the pathogenesis of diabetes mellitus, suggesting that the potential difference in the inflammatory process is caused by the microbial difference between diabetic and non-diabetic patients [38].