Assessment of the proliferation index in gastric carcinomas with the monoclonal antibody MIB 1

被引:12
作者
Broll, R [1 ]
Mahlke, C [1 ]
Best, R [1 ]
Schimmelpenning, H [1 ]
Strik, MW [1 ]
Schiedeck, T [1 ]
Bruch, HP [1 ]
Duchrow, M [1 ]
机构
[1] Univ Lubeck, Surg Clin, D-23538 Lubeck, Germany
关键词
proliferation index; gastric carcinoma; immunohistochemistry; monoclonal antibody MIB 1;
D O I
10.1007/s004320050133
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Our study aimed to reveal whether the proliferation index of tumor cells, calculated with the monoclonal antibody (mAb) MIB1, is of prognostic relevance in patients with a gastric carcinoma and shows any correlation to well-known clinicopathological factors (TNM categories, stage, grade, Lauren type). We examined formalin-fixed, paraffin-embedded tissue blocks of samples from 94 patients, who underwent surgery for an adenocarcinoma of the stomach between 1988 and 1991. Specimens were immunohistochemically stained using the mAb MIB1 in combination with the alkaline-phosphatase/anti-(alkaline phosphatase) technique. The proliferation index (PI) was estimated in various areas of interest (tumor center and periphery and in lymph node metastases of compartments I and II), by always counting 200 tumor cells in three different high-power fields per specimen, and calculated as the percentage of MIB1-positive tumor cell nuclei relative to all tumor cell nuclei in the area examined. The total PI in the primary tumor was 47.2% and slightly higher in the center (49.1%) compared to the periphery (44.7%). Surprisingly in lymph node metastases the PI was lower than in the primary tumor (compartment I: 39.5%, compartment II: 33.6%). Tumors with distant metastases revealed a higher proliferative activity (55.1%) than tumors without (44.3%). The PI increased significantly from well to poorly differentiated carcinomas (P < 0.01), whereas the intestinal Lauren type showed a lower PI than the diffuse type. No difference in survival was found between patients with a median PI or less and those with a PI above the median (47.2%). Our results show that the proliferation index in gastric carcinomas has no prognostic relevance and therefore is of low clinical value.
引用
收藏
页码:49 / 54
页数:6
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