RT Journal Article T1 Osteoarticular Expression of Musashi-1 in an Experimental Model of Arthritis. A1 O'Valle, Francisco A1 Peregrina, Magdalena A1 Crespo-Lora, Vicente A1 Galindo-Moreno, Pablo A1 Roman, Maria A1 Padial-Molina, Miguel A1 Mesa, Francisco A1 Aneiros-Fernandez, Jose A1 Aguilar, David A1 Gonzalez-Rey, Elena A1 Delgado, Mario A1 Hernandez-Cortes, Pedro K1 Modelos teóricos K1 Artritis experimental K1 Colágeno tipo II K1 Ratones K1 Células madre adultas K1 Inmunización K1 Inmunoglobulina g K1 Articulaciones K1 Animales K1 Masculino K1 Factor de necrosis tumoral alfa K1 Receptores del factor de necrosis tumoral AB Background. Collagen-induced arthritis (CIA), a murine experimental disease model induced by immunization with type II collagen (CII), is used to evaluate novel therapeutic strategies for rheumatoid arthritis. Adult stem cell marker Musashi-1 (Msi1) plays an important role in regulating the maintenance and differentiation of stem/precursor cells. The objectives of this investigation were to perform a morphological study of the experimental CIA model, evaluate the effect of TNFα-blocker (etanercept) treatment, and determine the immunohistochemical expression of Msi1 protein. Methods. CIA was induced in 50 male DBA1/J mice for analyses of tissue and serum cytokine; clinical and morphological lesions in limbs; and immunohistochemical expression of Msi1. Results. Clinically, TNFα-blocker treatment attenuated CIA on day 32 after immunization (P < 0.001). Msi1 protein expression was significantly higher in joints damaged by CIA than in those with no lesions (P < 0.0001) and was related to the severity of the lesions (Spearman's rho = 0.775, P = 0.0001). Conclusions. Treatment with etanercept attenuates osteoarticular lesions in the murine CIA model. Osteoarticular expression of Msi1 protein is increased in joints with CIA-induced lesion and absent in nonlesioned joints, suggesting that this protein is expressed when the lesion is produced in order to favor tissue repair. PB Hindawi Publishing Corporation YR 2015 FD 2015 LK http://hdl.handle.net/10668/2097 UL http://hdl.handle.net/10668/2097 LA en NO O'Valle F, Peregrina M, Crespo-Lora V, Galindo-Moreno P, Roman M, Padial-Molina M, et al. Osteoarticular Expression of Musashi-1 in an Experimental Model of Arthritis. Biomed Res Int. 2015:681456 NO Journal Article; DS RISalud RD Apr 6, 2025