TJP2 and endometriosis: A significant number of Gram-negative bacteria are translocated and infiltrated outside the intestinal cavity as a result of the altered composition of the intestinal microbiota induced by endometriosis, which results in the destruction of intestinal tight junctions and the reduction of tight junction protein 2 (ZO-2) expression [197], resulting in the infiltration of a significant amount of Gram-negative bacteria outside the intestine [198].