title: Effect of caffeic acid phenethyl ester on cartilage in experimental osteoarthritis.
abstract: Activation of nuclear factor kappa B (NF-kappaBeta) in synovial cells is seen in RA and OA patients. Caffeic acid phenethyl ester (CAPE) is a specific and potent inhibitor of NF-kappaBeta. We aimed to determine the in vivo effects of intra-articular injections of CAPE on cartilage in an experimental rabbit osteoarthritis (OA) model. Two groups of six New Zealand white rabbits underwent unilateral anterior cruciate ligament transection (ACLT). Four weeks after ACLT, the test group was injected with 150 micro g/kg CAPE in 0.5% ethanol once daily for 2 weeks and the control group was injected the same amount of 0.5% ethanol intra-articularly. All rabbits were killed 2 weeks after the last injection, and cartilage tissue was evaluated morphologically. A histological score totaling 7 points was determined for each knee. The CAPE group showed significantly decreased cartilage destruction and reduced loss of matrix proteoglycans. The histological score for cartilage tissue was significantly better in the CAPE group than in the control group (3.0+/-0.25 vs 5.3+/-0.55, P=0.005). This study suggests that intra-articular injection of CAPE may protect cartilage against the development of experimentally induced OA.
authors.affiliation: Department of Orthopaedics and Traumatology, Inönü University Medical Faculty, Malatya, Turkey. nelmali@hotmail.com
authors.forename: Nurzat
authors.initials: N
authors.lastname: Elmali
authors.forename: Irfan
authors.initials: I
authors.lastname: Ayan
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Türköz
authors.forename: Bülent
authors.initials: B
authors.lastname: Mizrak
authors.forename: Burak
authors.initials: B
authors.lastname: Germen
authors.forename: Arslan
authors.initials: A
authors.lastname: Bora
mesh_terms: D000818:Animals; D016118:Anterior Cruciate Ligament / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D002109:Caffeic Acids / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use*; D002358:Cartilage, Articular / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D004195:Disease Models, Animal; D018450:Disease Progression; D005109:Extracellular Matrix / Q000187:drug effects / Q000378:metabolism; D006614:Hindlimb; D007270:Injections, Intra-Articular; D016328:NF-kappa B / Q000037:antagonists & inhibitors*; D020370:Osteoarthritis, Knee / Q000209:etiology / Q000473:pathology / Q000517:prevention & control*; D010626:Phenylethyl Alcohol / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000627:therapeutic use*; D011509:Proteoglycans / Q000378:metabolism; D011817:Rabbits
chemical_list: D002109:Caffeic Acids; D016328:NF-kappa B; D011509:Proteoglycans; C055494:caffeic acid phenethyl ester; D010626:Phenylethyl Alcohol