@Article{Łuczyńska2013,
journal="Polish Journal of Pathology",
issn="1233-9687",
volume="64",
number="1",
year="2013",
title="Microvessel density and expression of vascular endothelial growth factor in clinically localized prostate cancer",
abstract="Identifying biological differences between benign lesions and malignant prostatic cancer (PC) may facilitate precise indication for more aggressive post-operative treatment. Therefore, we examined immunohistochemically histological specimens from 140 PC patients treated with radical surgery. The mean age of the patients was 62.9 ±6.2 (range 49.0-77.0) years. There were 13 (9.3%) at pTNM stage 1, 78 (55.7%) at stage 2, 40 (28.6%) at stage 3 and 9 (6.4%) at stage 4. In the analysed group there were 75 (53.6%) well-differentiated, 53 (37.8 %) moderately differentiated and 12 (8.6%) poorly differentiated tumours.   The mean pre-operative prostate-specific antigen (PSA) level was 9.9 ±0.5 ng/ml. Concentration of serum PSA was significantly increased with pTNM stage (p = 0.011), Gleason score (p = 0.011) and tumour grade (p = 0.003). In 34 (24.3%) tumours vascular endothelial growth factor (VEGF) expression was not shown. In the analysed group of tumours the mean percentage of positive VEGF cells was 14.8 ±1.4% and was not correlated with tumour grade (p = 0.648) or Gleason score (p = 0.697). However, significantly higher values for the protein were observed in pTNM 3 (p = 0.035) and pTNM 4 (P = 0.037) than in pTNM stage 1. In the whole series of tumours the mean microvessel density (MVD) was 97.5 ±2.4 /mm 2 . A non-significant decrease in the number of microvessels was observed in the highest pathological tumour volume (P = 0.631), Gleason score (p = 0.368) and tumour grade (p = 0.233). Prostate-specific antigen level was not associated statistically with either MVD (p = 0.466) or VEGF expression (p = 0.188). There was also no correlation between the immunohistochemical expression of VEGF and MVD (p = 0.925).",
author="Łuczyńska, Elżbieta
and Gasińska, Anna
and Wilk, Wacław",
pages="33--38",
doi="10.5114/pjp.2013.34601",
url="http://dx.doi.org/10.5114/pjp.2013.34601"
}