Published: 2015-05-02

Expression of Cold-Inducible RNA-Binding Protein (CIRP) in Pituitary Adenoma and its Relationships with Tumor Recurrence

Mingguang Wang, Huan Zhang, Xueyuan Heng, Qi Pang, Aigang Sun

(Department of Neurosurgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China (mainland))

Med Sci Monit 2015; 21:1256-1260

DOI: 10.12659/MSM.893128

Background: The aim of this study was to detect the expression of cold-inducible RNA-binding protein in pituitary adenoma and to determine its effects on tumor recurrence.
Material and Methods: We collected a total of 60 post-op samples collected from pituitary adenoma patients (including 20 cases of invasive pituitary adenoma, 20 cases of non-invasive adenoma, and 20 cases of non-invasive recurrent adenoma) admitted in our hospital. Both protein and mRNA levels of CIRP in 3 types of pituitary adenoma samples were quantified by Western blotting and real-time PCR, respectively.
Results: Western blotting revealed significantly elevated CIRP expression levels in invasive pituitary adenoma compared to non-invasive tumors, with statistical significance (p<0.05). Recurrent pituitary adenoma expressed significantly higher CIRP levels compared to non-recurrent tumors (p<0.05). Real-time PCR for CIRP mRNA obtained consistent results: transcript levels were significantly higher in invasive pituitary adenoma compared to non-invasive adenoma (p<0.05); recurrent adenoma also had significantly higher CIRP mRNA levels compared to non-recurrent tumors (p<0.05). Among all 3 types of pituitary adenoma, recurrent tumors had the highest levels of CIRP mRNA and protein.
Conclusions: The expression of CIRP in pituitary adenoma is closely related with tumor proliferation and invasion, and its significantly elevated expression level indicates post-op recurrence.

Keywords: ACTH-Secreting Pituitary Adenoma, Neoplasm Invasiveness, RNA-Binding Protein EWS

Published: 2015-05-01

Vitamin E Intake and Pancreatic Cancer Risk: A Meta-Analysis of Observational Studies

Lujian Peng, Xiangde Liu, Qian Lu, Tengqian Tang, Zhanyu Yang

Med Sci Monit 2015; 21:1249-1255

DOI: 10.12659/MSM.893792

Published: 2015-04-30

The Role of Nrf2 in Pathology of Pleomorphic Adenoma in Parotid Gland

Agnieszka Droździk, Robert Kowalczyk, Ewa Jaworowska, Elżbieta Urasińska, Mateusz Kurzawski

Med Sci Monit 2015; 21:1243-1248

DOI: 10.12659/MSM.892674