NEW YORK (Reuters Health)—An adherent-invasive E. coli pathotype present in the bowel may contribute to the development of Crohn’s disease-associated spondyloarthritis, researchers say. “Clinical symptoms, including extra-intestinal manifestations, in Crohn’s disease offer a portal into the microbial, immune, and genetic mechanisms underlying disease pathogenesis,” Dr. Randy S. Longman from Weill Cornell Medical College in New…