Background Rheumatoid arthritis (RA) is one of the most common form of inflammatory arthritis. It is characterized by being chronic, progressive with systemic inflammation. Patients with RA are at an increased risk of osteoporosis (OP) and consequentaly osteoporotic fractures (OFs). Interleukin-17 (IL-17) is a cytokine expressed in inflammatory and autoimmune diseases. It plays an important role in the pathogenesis of RA and OP. Fracture Risk Assessment Tool (FRAX)is a computer-based algorithm used to measure the 10-year probability of a major osteoporotic fractures and the 10-year probability of hip fracture. Current studies focus on better assessment of risk factors of OFs in RA patients aiming to prevent them and their subsequent complications.
Objectives To study the correlation between serum IL-17 level and FRAX index scores in pre-menopausal RA patients.
Methods This study included 25 premenopausal RA patients and 20 healthy controls. Serum IL-17 level was measured by using ELISA technique, bone mineral density (BMD) measured using DEXA scan and FRAX index was calculated by using online FRAX calculator (Femoral neck BMD was used to enhance fracture risk prediction).
Results Serum IL-17 level among RA patients was significantly higher than healthy controls, (5.99 ± 1.22pg/ml), (3.73 ± 2.15pg/ml) respectively with a p<0.001. Serum IL-17 levels showed a positive significant correlation with the FRAX index scores in RA patients.
Conclusions IL-17 is highly suspected to be implicated in the pathogenesis of OP in RA patients which may spotlight that the emergence of IL 17 blockade as a future therapy in RA is to be highlighted.
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Acknowledgement Deep thanks to my professors, parents and my husband
Disclosure of Interest None declared