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Extent of spontaneous apoptosis in gastric cancer: relation to proliferative index, p53 expression, CD 34 expression and histopathological features.

Abstract：

:Gastric cancer, characterized by poor prognosis, remains a global health problem. Thus, it is important to describe the biological factors which can affect the prognosis in this disorder. The aim of our study was the determination of the relationship between apoptotic index (AI) and other clinicopathological features (Ki67 labeling index = Ki-67 LI, neovascularity defined as CD-34 immunoreactivity - intratumoral microvessel density = IMVD, p53 immunopositivity, grade of malignancy, histological type, depth of tumour invasion, lymph node status) in 49 cases of gastric carcinoma. Recognition of apoptotic cells was performed applying the terminal deoxynucleotydil transferase mediated dUTP-digoxigenin nick end labeling technique (TUNEL). Among the tumours, 30 were intestinal type and 19 were diffuse type, including 17 cases of well and moderately differentiated tumours (G1 and G2) and 32 poorly differentiated tumours (G3). Apoptotic index was determined in all the examined tumours, and the mean value of AI was 5.8% +/- 4.7%. We found a significant relationship between AI, grade of malignancy and Ki-67 LI. Significantly higher AI -8.1% +/- 5.7% was observed in G1-G2 tumours in comparison to 4.7 +/- 3.8% (p<0.05) in G3 tumours. In tumours with high proliferative potential (above mean value of Ki-67 LI -29.77% +/- 24.9%) we observed higher apoptotic index, mean value 7.9% +/- 5.7%, and in tumours with low proliferation (Ki-67 LI below 29%) mean AI was 4.4% +/- 3.7% (p<0.05). The p53 positive immunoreactivity was found in 30 out of 49 cases (mean AI = 6.75% +/- 4.8%). No apparent correlation between AI, histopathological type of gastric cancer, lymph node status and p-53 and CD-34 immunoreactivity was found.

journal_name

J Exp Clin Cancer Res

journal_title

Journal of experimental & clinical cancer research : CR

authors

Jesionek-Kupnicka D,Tenderenda M,Rutkowski P

keywords:

subject

Has Abstract

pub_date

2002-09-01 00:00:00

pages

371-5

issue

eissn

0392-9078

issn

1756-9966

journal_volume

pub_type

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Extent of spontaneous apoptosis in gastric cancer: relation to proliferative index, p53 expression, CD 34 expression and histopathological features.