Characteristic of expression levels of HepPar-1, alpha-fetoprotein, cytokeratin 7 and 20 by the cells of cholangiocellular cancer in trephine biopsy of the liver
DOI:
https://doi.org/10.14739/2310-1210.2014.5.28794Keywords:
Сholangiocellular Carcinoma, Expression, HepPar 1, alpha-Fetoprotein (AFP), Cytokeratin 7, Cytokeratin 20Abstract
Aim. Expression level of immunohistochemical markers such as HepPar-1, AFP, CK7, CK20 and the area of immunopositive cells in cholangiocellular liver cancer, and their differences from hepatocellular carcinoma
Methods and results. Histopathological, histochemical and immunohistochemical research of trephine was determined in the liver in 90 patients with biopsy. Among them 53 patients had hepatocellular, 36 – сholangiocellular liver cancer, 1 patient had mixed hepato-cholangiocellular carcinoma. Level of expression of immunohistochemical markers of tumor cells and the area of immunopositive tumor cells in the tumor was determined by photo-digital morphometry. It was established that expression of α-fetoprotein is determined in 47.22% of patients with cholangiocellular liver carcinoma in tumor cells, when AFP-immunopositive cells represent 17,25 ± 9,67% of the total area of tumor cells. Positive expression of HepPar-1 cells in cholangiocellular liver cancer wasn’t detected (unlike hepatocellular carcinoma, when cytoplasmic expression of HepPar-1 by tumor hepatocytes is determined in 92.45% of cases). Expression of СK7 by cholangiocellular carcinoma cells was observed in 97.22% of patients, and the expression of CK20 – in 45.29% patients, immunopositive cells represent 43,55 ± 9,93% and 50,28 ± 16,35% of the tumor area, respectively. Medium strength correlation was determined between the level of AFP and CK7 expression by tumor cells in cholangiocellular carcinoma. Direct strong bond was determined between level of AFP and CK20 expression. Negative weak correlation was determined between the level of CK7 and CK20.
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