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  • Title: HtrA1 expression associated with the occurrence and development of esophageal cancer.
    Author: Yu Y, Shao W, Hu Y, Zhang J, Song H, Zhu ZH.
    Journal: World J Surg Oncol; 2012 Aug 30; 10():179. PubMed ID: 22935172.
    Abstract:
    BACKGROUND: The purposes of this study were to measure both the mRNA and protein expression levels of high-temperature requirement serine peptidase 1 (HtrA1) in human esophageal cancer tissues and their adjacent, comparatively normal esophageal tissues. METHODS: The expression levels of HtrA1 mRNA and protein in both tissue types were measured by semi-quantitative RT-PCR (reverse transcription-polymerase chain reaction) and Western blotting. The clinical and pathological correlation between HtrA1 expression levels and the occurrence and development of esophageal cancer was analyzed. RESULTS: The expression levels of HtrA1 mRNA and protein in esophageal carcinoma were significantly lower than the levels expressed in their adjacent normal esophageal tissue (p < 0.05). The more highly undifferentiated esophageal tumor cells expressed lower HtrA1 mRNA and protein expression levels (p < 0.05). Patients with tumors in early pathological stages (I-II) had significantly higher HtrA1 mRNA and protein expression levels than did patients with tumors in mid-to-late pathological stages (III-IV) (p < 0.05). Patients with positive lymph node metastasis had significantly lower HtrA1 mRNA and protein expression levels than did patients with lymph node-negative disease (p < 0.05). CONCLUSIONS: HtrA1 expression is associated with the occurrence and development of esophageal cancer.
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