Expression of p57kip2, Rb protein and PCNA and their relationships with clinicopathology in human pancreatic cancer

Table 1 Expression of p57^kip2 protein in pancreatic cancer tissues

Characteristics	p57kip2 protein expression
	-	+	++	+++	Rate (%)
Tumor tissues	17	11	3	1	46.9a
Adjacent tissues	8	13	6	5	75.0a
Well-differentiated	7	9	2	1	63.2b
Moderate or low-differentiated	10	2	1	0	23.1b
Lymph node metastasis	9	2	1	0	25.0c
Non- lymph node metastasis	8	9	2	1	60.0c

^aP < 0.05,

^bP < 0.05,

^cP > 0.05.

Table 2 Expression of Rb protein in pancreatic cancer tissues

Characteristics	Rb protein expression
	-	+	++	+++	Rate (%)
Tumor tissues	16	10	2	4	50.0a
Adjacent tissues	7	12	8	5	78.1a
Well differentiated	9	4	2	4	52.6b
Moderate or low-differentiated	7	6	0	0	46.2b
Lymph node metastasis	8	3	1	0	33.3c
Non- lymph node metastasis	8	7	1	4	60.0c

^aP < 0.05,

^bP > 0.05,

^cP > 0.05.

Table 3 Expression of PCNA protein in pancreatic cancer tissues

Characteristics	PCNA protein expression
	-	+	Rate (%)
Tumor tissue	9	23	71.9a
Adjacent tissue	18	14	43.8a
Well-differentiation	8	11	57.9b
Moderate or low-differentiation	1	12	92.3b
Lymph node metastasis	0	12	100.0c
Non- Lymph node metastasis	9	11	55.0c

^aP < 0.05,

^bP < 0.05,

^cP < 0.05.

Table 4 Relationships between p57^kip2 and Rb protein in pancreatic cancer

p57kip2	Rb -expression
	-	+	++	+++	Rate (%)
-	9	6	0	2	47.1
+	6	3	1	1	53.3
++	1	1	0	1
+++		0	0	1	0