PCNAmRNA和Survivin mRNA在不同大肠肿瘤性病变腺管开口组织中表达关系的研究

目的探讨腺瘤癌变过程中其表面腺管开口变化与PCNA、survivin mRNA在各型腺管开口中表达关系的研究。方法标本分别以腺管开口类型及病理组织学分为6组。采用RT—PCR法检测组织中PCNA mRNA及survivin mRNA的表达。结果PCNAmRNA在大肠黏膜腺管开口Ⅰ型、Ⅱ型、ⅢL型、Ⅳ型、Ⅴ1型、ⅤN型6组中阳性表达率分别为0％（0／13）、12．5％（1／8）、38．9％（7／18）、66．7％（12／18）、75．0％（3／4）、100．0％（9／9），survivin mRNA为0％（0／13）、12．5％（1／8）、22．2％（4／18）、44．4％（8／18）、50．0％（2／4）、77．8％（7／9）。PCNA mRNA阳性表达率在正常大肠黏膜、炎性息肉、管状腺瘤、绒毛状腺瘤、腺瘤伴不典型增生及癌6组中分别为0％（0／10）、16．7％（2／12）、35．3％（6／17）、63．6％（7／11）、75．0％（6／8）、91．7％（11／12），survivin mRNA为0％（0／10）、8．3％（1／12）、23．5％（4／17）、45．5％（5／11）、50．0％（4／8）、和66．7％（8／12），均呈逐渐升高趋势。结论PCNA mRNA及survivin mRNA在腺管开口类型分组其表达强度变化，能较客观反映肿瘤细胞的增殖活性及凋亡状态，并且与病理类型分组得出相同的结果，能即刻将形态学与分子生物学联系起来。

Study on the pit patterns of colorectal neoplastic lesions with the expression of PCNA and survivin mRNA

Objective To study the relationship of pit pattern in the progress of colorectal and the expression of PCNA and survivin in pit pattern. Methods Chromoendoscopy observation results were recorded according to the pit pattern classification proposed by Kudo. These results were divided into 6 groups according to the pit pattern and the results of histophathology. Expression of PCNA and surviving mRNA was detected by RT-PCR. Statistical analysis was performed using χ2 test , Fisher's exact test or Spearman rank correlation with SPSS 12.0 software package. Results In 6 groups classified according to the pit patterns, the expression rate of PCNA mRNA in type Ⅰ, Ⅱ, Ⅲ L, Ⅳ, V 1 and VN were 0% (0/13), 12.5% (1/8), 38.9% (7/18), 66.7% (12/18), 75.0% (3/4) and 100.0% (9/9), the expression rate of survivin mRNA in type Ⅰ,Ⅱ, Ⅲ L, Ⅳ, V 1 and V N were 0%, (0/13), 12.5% (1/8), 22.2% (4/18), 44.4% (8/18), 50.0% (2/4) and 77.8% (7/9), respectively. Conclusions The expression of survivin and PCNA mRNA had positive correlation in the coloree-tal lesions classified whether by the pit patterns or histophathology. Study of the two genes simultaneously could complement each other and reflect the biological characteristics of colorectal cancer more accurately.