title: Muramyl dipeptide induces acute joint inflammation in the mouse.
abstract: Acute joint inflammation was produced in BALB/c mice by a single intravenous injection of synthetic muramyl dipeptide (MDP), its stereoisomers and 6-O-acyl derivatives of MDP. Four adjuvant-active, but not five adjuvant-inactive MDP analogs induced acute swelling and erythema of the ankles and wrists which were detected around 6-10 hr, reached the maximum severity by 18-24 hr and subsided by days 3 to 4 after injection. Introduction of the stearoyl group, but not the alpha-branched long chain fatty acid group into the C-9 hydroxyl group of MDP enhanced and prolonged the joint lesions compared with MDP.
mesh_terms: D000119:Acetylmuramyl-Alanyl-Isoglutamine / Q000008:administration & dosage* / Q000031:analogs & derivatives*; D000818:Animals; D001168:Arthritis / Q000473:pathology*; D001169:Arthritis, Experimental / Q000473:pathology*; D005260:Female; D007249:Inflammation; D007596:Joints / Q000473:pathology*; D051379:Mice; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D000119:Acetylmuramyl-Alanyl-Isoglutamine