Molecular forms of trefoil factor 1 in normal gastric mucosa and its expression in normal and abnormal gastric tissues

Table 1 Expression of TFF1 in gastric carcinoma and pathological changes prior to carcinogenesis (mean ± SD)

Classification	n	Averagepositive A
Normal	35	0.44 ± 0.06
Low-differentiated gastric carcinoma	27	None
Middle and highly differentiated gastric carcinoma	11	0.41 ± 0.07a
Peripheral tissues of gastric carcinoma	38	0.51 ± 0.07b
Atypical hyperplasia	36	0.57 ± 0.03b
Intestinalization	35	None
Peripheral tissues of intestinalized mucosa	35	0.45 ± 0.07a
Esophageal carcinoma	20	None
Peripheral tissues of esophageal carcinoma	20	None

^aP > 0.05 vs normal mucosa;

^bP < 0.001 vs normal mucosa.