Abstract
Objective To investigate the role of leptin and leptin receptor in carcinogensis and development of esophageal carcinoma. Methods The expression of leptin and leptin receptor was detected in 52 cases of esophageal carcinoma tissues and 49 cases of normal esophageal tissues by immunohistochemistry. The correlation between their expression and clinicopathological parameters was also analysized. Results The expression rate of leptin and leptin receptor in esophageal carcinoma was 78. 8% (41/52) and 82.7% (43/52) respectively, and the rate in normal esophagus was 58.3% (28/49) and 59.2% (29/49) respectively. The expression rate of leptin and leptin receptor both had statistically significantly differences between esophageal carcinoma and normal esophagus tissues (P ＜ 0. 05). The expression rate of leptin was associated with position, tumor size, differentiation, lymphatic metastasis and TNM stage (P ＜ 0. 05 ). Conclusion Leptin and leptin receptor were dually expressed in esophageal carcinoma.They played important roles in the process of carcinogensis and development of esophageal carcinoma. Key words: Esophageal carcinoma; Leptin; Leptin receptor
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