[Biological significance of expression of calcyclin in human pancreatic carcinoma: a tissue microarray-based study].

Objective: To investigate the expression of calcyclin in pancreatic carcinoma and its relation to the patients' prognosis.
Methods: Human pancreatic carcinoma tissue microarray was constructed, which contained 63 cores of 3 normal adult pancreas tissues, 6 chronic pancreatitis tissues, 51 pancreatic carcinoma tissues and 3 islet cell carcinoma tissues. Immunohistochemistry was performed to detect the expression of calcyclin in these tissues, and the relationship between calcyclin and the clinicopatholoical features of pancreatic carcinoma was analyzed.
Results: The positivity rate of calcyclin in the pancreatic carcinoma tissue was 76.5% (39/51), and calcyclin staining was more intense in the malignant cells than in the benign cells (P=0.007), suggesting a correlation between calcyclin expression and pancreatic carcinoma. No evidence was found for an association of calcyclin expression with the variables including the patients' gender, age at surgery, and tumor grade. Weak staining for calcyclin was noted in chronic pancreatitis tissues.
Conclusion: Calcyclin expression is related to the pancreatic carcinomas and up-regulation of calcyclin expression is possibly an early event in pancreatic and pragression of development cancer.