BACKGROUND: The aim of this study was to evaluate the effect of 25-hydroxyvitamin D [25(OH)D] and cathelicidin levels on pelvic inflammatory disease [PID] in reproductive aged women.
METHODS: A total of 81 reproductive aged women, 43 with PID and 38 without PID, were included in the study. Five millilitres of venous blood were collected from subjects and controls for complete hemogram and serum for CRP, IL-6, 25(OH)D and cathelicidin.
RESULTS: There were significant differences between the study group and the control group for 25(OH)D (study group, 47.3 ± 2.01 ng/mL, control group, 28.38 ± 1.35 ng/mL, p = 0.001), for cathelicidin (study group, 165.56 ± 65.92 ng/mL, control group, 10.34 ± 6.48 ng/mL, p = 0.001). There was a positive correlation between 25(OH)D, cathelicidin, and other markers (WBC, CRP, and IL-6). Receiver operator curve analysis showed that the best cutoff value for 25(OH)D was 34.25 ng/mL, sensitivity 88%, and specificity 89%, and for cathelicidin 15 ng/mL, sensitivity 91%, specificity 90%.
CONCLUSIONS: 25(OH)D and cathelicidin can be used as acute phase reactants like conventional markers in PID. Future studies are needed to understand the roles of these molecules in both diagnosis and follow-up of infectious situations.