AAS ›› 2014, Vol. 45 ›› Issue (5): 675-681.doi: 10.3969/j.issn.0529-1356.2014.05.016

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Expression of fibroblast growth factor-2 and fibroblast growth factor receptor-4 in human papillary thyroid carcinoma and their significances

LI Qian 1,2 LI Li3 GUO Shu-qin 2* ZHANG Yun-liang2 KONG Fan-qiang4 LI Fei2 KANG Jun-peng2 WU Jing-fang3 GAO Fu-lu3   

  1. 1. Department of Postgraduate of Chengde Medical College,Hebei Chengde 067000, China; 2. Department of Endocrine,the First Central Hospital of Baoding,Hebei Baoding 071000, China; 3. Laboratory of College of Life Science, Hebei Normal University,Hebei Shijiazhuang 050000, China; 4.Department of Radiology,the First Hospital Affiliated to Chengde Medical University,Hebei Chengde 067000, China

  • Received:2014-01-09 Revised:2014-04-21 Online:2014-10-06 Published:2013-10-06
  • Contact: GUO Shu-qin E-mail:gsq2011@163.com

Abstract:

Objective To investigate the expression of fibroblast growth factor-2 (FGF-2) and fibroblast growth factor receptor-4(FGFR-4) in the papillary thyroid carcinomas(PTC)and clinical significance. Methods Immunohistochemistry and Western blotting for the expression of FGF-2 and FGFR-4 were performed in 89 cases of PTC and 30 cases of normal thyroid tissues (NTT) adjacent to the tumors. Results Immunohistochemistry results showed that, FGF-2 and FGFR-4 expressions were high in thyroid carcinoma (P<0.01,P<0.01)in contrast to that in the normal thyroid tissues, and the difference was statistically significant;There was a positive linear correlation between expressions of FGF-2 and FGFR-4 and lymph node metastasis (χ2=14.798,P<0.01;χ2=7.27,P<0.01)and differentiation degree (χ2=13.824,P<0.01;χ2=16.921, P<0.01) in papillary thyroid carcinoma,while there was no difference in gender,age and tumor size(P>0.05). Analyzed by Western blotting technique,FGF-2 and FGFR-4 expressions in thyroid carcinoma were significantly higher than that in normal tissue,with decrease of cancer degree of tissue differentiation and significantly up regulated expression (P< 0.05). Expressions of FGF-2 and FGFR-4 were in a positive linear correlation in the disease(rs=0.434,P<0.01). Conclusion The expressions of FGF-2 and FGFR-4 are correlated with papillary thyroid cancer and they participated in the process of invasion and metastasis, both of which have a positive synergistic effect. The degree of malignancy and biological behavior are meaningful and comprehensive indicators,which provide a theoretical basis for the subsequent experimental studies of cellular and molecular biology.

Key words: Fibroblast growth factor-2, Fibroblast growth factor receptor-4, Invasion, Metastasis, Papillary thyroid carcinoma, Western blotting, Human