TY - BOOK AU - Shaymaa Ahmed Ramadan Ahmed AU - Alaa Eldin Amin Afifi , AU - Osama Mohammad Ahmed , TI - Effect of sildenafil citrate on rat model of acetic acid induced acute and chronic colitis / PY - 2012/// CY - Cairo : PB - Shaymaa Ahmed Ramadan Ahmed , KW - Calmoduline KW - Glutathione peroxidase KW - Tetrahydrobiopterin N1 - Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Physiology; Issued also as CD N2 - The results of biochemical, histopathological, oxidative stree and antioxidant defense system markers revealed that acetic acid induced an inflammatory ulcerative colitis indicated by elevated serum TNF-Ü and IL-1Ý. The antioxidant defense system parameters in both colon and rectum tissues (GSH, SOD and Px) are decreased as a result of acetic acid administration ER -