Abstract
The aim of this study was to evaluate the expression of Y-box binding protein-1 (YB-1) in nonneoplastic cervical tissue and cervical cancer tissue and to evaluate its relationship with chemoradiosensitivity in the cases of cervical cancer. We performed immunohistochemical studies to examine YB-1 expression among 59 patients with cervical cancer, 30 with cervical intraepithelial neoplasia (CIN), and 30 with cervicitis. The mean YB-1 histological score(HSCORE)values for cervicitis, cervical CIN, and cervical cancer tissues were 22.3, 39, and 84.4, respectively. The mean YB-1 HSCORE value was 80.0 for cervical cancer patients who showed complete pathological response to chemoradiotherapy and 144.3 for cervical cancer patients who showed partial pathological response. Our data showed that the YB-1 expression was the highest in cervical cancer tissue, followed by cervical CIN tissue, and then cervicitis tissues. High YB-1 expression resulted in a lower pathological response rate in patients of cervical cancer than low YB-1 expression did. Our results implied that YB-1 may play a role in the genesis of cervical cancer and that high YB-1 expression decreases the chemoradiosensitivity of cervical cancers.
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