Table 2

 Relationship between clinicopathological features and neutrophil gelatinase-associated lipocalin expression level in oesophageal squamous cell carcinoma by western blot

ParametersNGAL expression level(ng/100 μg, mean (SD))p Value
ESCC, oesophageal squamous cell carcinoma; NGAL, neutrophil gelatinase-associated lipocalin.
Mean age, years (range)
    <570.990 (1.036) (n = 37)0.364
    >570.775 (0.973) (n = 36)
Gender
    Male0.931 (1.039) (n = 62)0.345
    Female0.618 (0.765) (n = 11)
Primary tumour
    T1/T20.571 (0.669) (n = 19)0.126
    T3/T40.981 (1.081) (n = 54)
Regional lymph node
    N00.938 (1.806) (n = 36)0.593
    N10.812 (0.930) (n = 37)
Distant metastasis
    M00.906 (1.013) (n = 69)0.436
    M10.500 (0.867) (n = 4)
Stage
    I/IIA/IIB0.793 (0.955) (n = 33)0.486
    III/IV0.959 (1.049) (n = 40)
Histopathology
    Normal tissue0.549 (0.918) (n = 73)0.030
    ESCC tissue0.874 (1.002) (n = 73)
    Well differentiated (G1)1.504 (1.209) (n = 14)p1/2 = 0.017
    Moderately differentiated (G2)0.751 (0.934) (n = 46)p2/3 = 0.677
    Poorly differentiated (G3)0.632 (0.766) (n = 13)p1/3 = 0.036