May Neutrophil-Lymphocyte and Platelet-Lymphocyte Ratios Indicate Disease Activity in Ankylosing Spondylitis?

Objectives: This study aims to evaluate the associations between neutrophil-lymphocyte ratio (NLR), mean platelet volume, and platelet lymphocyte ratio (PLR) with disease activity in ankylosing spondylitis. Patients and methods: The study included 103 patients (63 males, 40 females; mean age 40.7±12.0 years; range 20 to 70 years) with ankylosing spondylitis and 70 healthy controls (43 males, 27 females; mean age 42.7±15.3 years; range 18 to 66 years). All participants’ age, sex, erythrocyte sedimentation rate, C-reactive protein and mean platelet volume levels, total white blood cell, neutrophil, lymphocyte, and platelet counts were recorded while patients’ Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath Ankylosing Spondylitis Functional Index and Bath Ankylosing Spondylitis Metrology Index scores, medication types, duration of disease and medication use were recorded. Patients were divided into three groups: healthy controls (group 1), patients having BASDAI scores