title: Calprotectin is a potential prognostic marker for polycystic ovary syndrome.
abstract: Background Calprotectin is an antimicrobial, calcium and zinc-binding heterocomplex protein and has been proposed as a marker to rule out inflammatory conditions. The aim of this study was to evaluate the role of calprotectin in the diagnosis of polycystic ovary syndrome and to investigate the association between calprotectin and insulin resistance. Methods A total of 41 females with polycystic ovary syndrome and 54 age-matched without polycystic ovary syndrome were eligible for the study. Serum concentration of calprotectin was determined using enzyme-linked immunosorbent assay. Clinical characteristics, hormone and metabolic parameters were evaluated in each subject. The predictive value of serum calprotectin was assessed using receiver operating characteristic curves. Correlations between the serum calprotectin concentrations and insulin resistance were examined using Spearman's correlation. Results We found that the serum calprotectin concentrations were significantly higher in polycystic ovary syndrome compared with the non-polycystic ovary syndrome group ( P < 0.001). The area under the receiver operating characteristic curve assay yielded a satisfactory result of 0.88 (95% confidence interval 0.81-0.95; P < 0.001). The optimum cut-off was 2.4  µg/mL with a 85.2% specificity and 75.6% sensitivity for polycystic ovary syndrome diagnosis. A significant positive correlation was found between the serum calprotectin and insulin resistance. Conclusions These results suggest that calprotectin might be a useful adjunct in the diagnosis of polycystic ovary syndrome, especially those with insulin resistance.
authors.affiliation: 1 Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China.
authors.forename: Shouzhen
authors.initials: S
authors.lastname: Chen
authors.affiliation: 2 Jingmen No.2 People's Hospital of Hubei Province, Jingmen, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Jiang
authors.affiliation: 2 Jingmen No.2 People's Hospital of Hubei Province, Jingmen, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Ding
authors.affiliation: 2 Jingmen No.2 People's Hospital of Hubei Province, Jingmen, China.
authors.forename: Junmei
authors.initials: J
authors.lastname: Wang
authors.affiliation: 2 Jingmen No.2 People's Hospital of Hubei Province, Jingmen, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Long
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers / Q000097:blood; D016022:Case-Control Studies; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007333:Insulin Resistance; D039841:Leukocyte L1 Antigen Complex / Q000097:blood*; D007986:Luteinizing Hormone / Q000097:blood; D008875:Middle Aged; D010053:Ovary / Q000378:metabolism / Q000473:pathology; D011085:Polycystic Ovary Syndrome / Q000097:blood* / Q000175:diagnosis* / Q000473:pathology; D011237:Predictive Value of Tests; D012372:ROC Curve; D012738:Sex Hormone-Binding Globulin / Q000378:metabolism
chemical_list: D015415:Biomarkers; D039841:Leukocyte L1 Antigen Complex; D012738:Sex Hormone-Binding Globulin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone
keywords: Calprotectin; insulin resistance; polycystic ovary syndrome; serum