• Fatih Yıldız and Onur Gökmen.
• Department of Rheumatology, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey.
• Int. J. Clin. Pract. 2021 Mar 1; 75 (3): e13992.

BackgroundThe present study was conducted to investigate the association between haematologic indices, neutrophil/lymphocyte ratio (NLR), mean platelet volume (MPV), platelet/lymphocyte ratio (PLR), disease activation, organ involvement, and inflammatory markers in the SS.MethodsThe study was conducted with newly diagnosed and treatment-naive 41 primary SS patients who met ACR-2012 criteria and 96 healthy volunteers. Blood tests obtained before treatment were evaluated. Lymphocyte, neutrophil and platelet counts, mean corpuscular volume (MCV), platelet distribution width (PDW), plateletcrit (PCT), haematocrit (HCT), MPV, white blood cell count (WBC) values were harvested from CBC of the subjects and NLR, PLR were calculated over these values. The values were compared between groups and correlation with EULAR SS disease activity index (ESSDAI) was evaluated.ResultsThe study included a total of 41 patients with a mean age of 40.73 ± 12.0 years and 96 healthy subjects with a mean age of 40.0 ± 9.2 years. In inter-group comparisons, lymphocyte, platelet counts, and MPV values were significantly lower in the SS group compared with the control group (P < .01), and NLR was significantly higher in the SS group (P = .026). The mean ESSDAI scores in SS patients were 5.65 ± 0.86 SE. These scores were significantly higher in patients with neurological involvement. There was a positive correlation between ESSDAI and PLR.ConclusionNLR, PLR, and MPV may be used as indicators or with activity index in SS. ESSDAI scores were found to be high in patients with neurological involvement, and it was also found to be correlated with PLR.© 2021 John Wiley & Sons Ltd.

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