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Abstract

Serum markers reflect a bone cell activity that regulate bone remodeling, bone alkaline phosphatase (PAO), Total Intact Procollagen Type I Nterminal propeptide (TP1NP) for training and tartrate-resistant acid phosphatase (TRAPB5), carboxy-terminal collagen crosslinks (Cross Laps) for bone resorption. These markers are sensitive and early tools, Elevated serum levels of these markers is a very good prognostic factor of primary bone tumors as well as monitoring and evaluation tools. We investigated whether biomarkers of bone formation (PAO, P1NP) and bone resorption (CTX and TRAPb5) were modified by chemotherapy. The aim of this study was to evaluate the impact of treatment on serum PAO and TP1NP and TP1NP and TRAPB5. Result: We found a significant correlation between serum levels of training biomarkers (PAO and TP1NP in the group of patients (p = 0.0042) and a strong correlation between PAO and TP1NP In the sick and control groups (p = 0.00027) and a strong correlation between TP1NP and TRAP5b in the groups of patients and controls (p = 0.033). Bone markers can be used in therapeutic monitoring of experimental bone disorders and to assess remodeling during chemotherapy for primary tumors. Recently, the isolation and characterization of several compounds of the bone matrix have enabled the development of new biochemical markers of bone remodeling 6. They use either the measurement of enzyme activity related to the