The specialized book "New Mechanisms of Pathogenesis in Inflammatory Bowel Diseases" offers a comprehensive analysis of the pathophysiological mechanisms that lead to inflammatory diseases of the intestine. It particularly highlights the role of the integrity of the intestinal barrier system and its significance for the onset and recurrence of these diseases. The author Ljudmila Ostapchenko, along with Shandor Sabo and Anna Tolstanova, presents both a critical literature review and original research findings that emphasize current insights into the barrier-forming functions of the endothelium and specific endothelium-related factors in the pathogenesis of inflammatory bowel diseases. This book is aimed at professionals in the fields of medicine and nursing who are involved in the diagnosis and treatment of bowel diseases.