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Table 1 Expression of HIF-1α, MRP1 and MDR1 in chordoma tissue and nucleus pulposus tissue

From: Expression of MDR1, HIF-1α and MRP1 in sacral chordoma and chordoma cell line CM-319

 

positive

negative

positive rate

χ 2

P

HIF-1α(n)

chordoma

40

10

80%

18.55

<0.005

nucleus pulposus

3

12

20%

  

MRP1 (n)

chordoma

37

13

74%

11.10

<0.005

nucleus pulposus

4

11

26.7%

  

MDR1 (n)

chordoma

5

45

10%

0.343

>0.5

nucleus pulposus

3

12

20%