[Correlation between the expression of aquaporin 1 and the micro-angiogenesis in laryngeal carcinoma].

OBJECTIVE

To confirm the expression and distribution of aquaporin 1 in laryngeal carcinoma, and analyze the correlation to micro angiogenesis in the development of laryngeal carcinoma.

METHOD

The expression and distribution of aquaporin 1 were examined by immunohistochemical technique in laryngeal carcinoma. New vessels were labelled using CD105 monoclonal antibody. Systematic analysis had been done on IMVD and data of clinical pathology.

RESULT

Positive AQP1 cells and IMVD in primary carcinoma were higher than that in normal laryngeal mucosa. The expression of AQP1 was gradually increased with the decrease of differentiation grade of laryngeal carcinoma. The expression of AQP1 in lymphatic metastasis groups was higher than that of controls.

CONCLUSION

The expression of AQP1 in tumor cells and IMVD of primary laryngeal carcinoma are higher than normal. Not only is increased expression of AQP1 positive relevant to IMVD, but to lymphatic metastasis and malignant cell grading from laryngeal carcinoma. The increased AQP1 expression in epithelial cells of carcinoma and vascular endothelial cells may play a considerable role in growing, infiltrating, metastasis of malignant tumor by promoting vascular permeability.