and Malignant Tumors of the Digestive Tract: A Mechanistic Overview.

() is an oral anaerobe that plays a role in several oral diseases. However, is also found in other tissues of the digestive tract, and several studies have recently reported that the level of is significantly elevated in malignant tumors of the digestive tract. is proposed as one of the risk factors in the initiation and progression of digestive tract malignant tumors. In this review, we summarize recent reports on and its role in digestive tract cancers and evaluate the mechanisms underlying the action of in digestive tract cancers.