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Disease Markers
Volume 2017, Article ID 4962137, 5 pages
https://doi.org/10.1155/2017/4962137
Research Article

Elevated Concentrations of SERPINE2/Protease Nexin-1 and Secretory Leukocyte Protease Inhibitor in the Serum of Patients with Papillary Thyroid Cancer

1Clinic of Endocrinological and General Surgery, Chair of Endocrinology, Medical University of Lodz, Pabianicka 62, 93-513 Lodz, Poland
2Department of Immunoendocrinology, Chair of Endocrinology, Medical University of Lodz, Sterlinga 3, 91-425 Lodz, Poland
3Clinic of Endocrinology, Chair of Endocrinology, Medical University of Lodz, Sterlinga 3, 91-425 Lodz, Poland

Correspondence should be addressed to Hanna Ławnicka; lp.zdol.demu@akcinwal.annah

Received 16 November 2016; Revised 2 January 2017; Accepted 16 January 2017; Published 31 January 2017

Academic Editor: Tomás Sobrino

Copyright © 2017 Tomasz Stępień et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. SERPINE2 and secretory leukocyte protease inhibitor (SLPI) are proteins with anticoagulant properties which could promote solid tumor growth. However, their role in the pathogenesis of thyroid cancer has not been determined. Materials and Methods. The aim of this study was to assess serum SERPINE2 and SLPI concentrations in a group of 36 patients with papillary thyroid cancer (PTC) and a group of 19 subjects with multinodular nontoxic goiter (MNG). The control group (CG) consisted of 20 healthy volunteers. Blood samples were collected one day before surgery. Serum SERPINE2 and SLPI concentrations were measured using specific ELISA methods. Results. Significantly higher concentrations of SERPINE2 and SLPI were found in patients with PTC as compared with MNG and controls. Positive correlation was found between SERPINE2 and SLPI concentrations in PTC patients. The levels of SERPINE2 and SLPI did not differ significantly between MNG and healthy controls. Conclusions. Our results indicate that SERPINE2 and SLPI play a significant role in the development of papillary thyroid cancer and imply that the evaluation of serum concentrations of both anticoagulant molecules may be considered as additional marker for the differentiation of malignancies during the preoperative diagnosis of patients with thyroid gland tumors.