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Serum biomarker analysis in patients with recurrent spontaneous abortion

Serum biomarker analysis in patients with recurrent spontaneous abortion

Molecular Medicine Reports 16(3): 2367-2378

Recurrent spontaneous abortion (RSA) occurs in 1‑5% of parturients. The sustained therapy and research for RSA is expensive, which is a serious issue faced by both patients and doctors. The aim of the present study was to detect protein expression profiles in the serum of RSA patients and healthy controls, and to identify potential biomarkers for this disease. A 1,000‑protein microarray consisting of a combination of Human L‑507 and L‑493 was used. The microarray data revealed that eight serum protein expression levels were significantly upregulated and 143 proteins were downregulated in RSA patients compared with the healthy controls. ELISA individually validated 5 of these 151 proteins in a larger cohort of patients and control samples, demonstrating a significant decrease in insulin‑like growth factor‑binding protein‑related protein 1 (IFGBP‑rp1)/IGFBP‑7, Dickkopf‑related protein 3 (Dkk3), receptor for advanced glycation end products (RAGE) and angiopoietin‑2 levels in patients with RSA. Sensitivity and specificity analyses were calculated by a receiver operating characteristics curve, and were revealed to be 0.881, 0.823, 0.79 and 0.814, with diagnostic cut‑off points of 95.44 ng/ml for IFGBP‑rp1, 32.84 ng/ml for Dkk3, 147.27 ng/ml for RAGE and 441.40 ng/ml for angiopoietin‑2. The present study indicated that these four proteins were downregulated in RSA samples and may be useful as biomarkers for the prediction and diagnosis of RSA. Subsequent studies in larger‑scale cohorts are required to further validate the diagnostic value of these markers.

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Accession: 060239851

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PMID: 28677727

DOI: 10.3892/mmr.2017.6890

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