Expressions of matrix metalloproteinase-9 and interleukin-8 in nasopharyngeal carcinoma and association with Epstein-Barr virus latent membrane protein-1 / 临床耳鼻咽喉头颈外科杂志

ABSTRACT

OBJECTIVE@#To investigate the expressions of matrix metalloproteinase-9 (MMP-9) and interleukin-8 (IL-8) in nasopharyngeal carcinoma and their association with Epstein-Barr virus latent membrane protein-1 (LMP-1).@*METHOD@#The expressions of MMP-9, IL-8 and LMP-1 were immunohistochemical studied in 53 nasopharyngeal carcinoma sections. We statistically analyzed the correlation of these data and also the relationship between the clinical features and the experimental data of these patients.@*RESULT@#The positive expression rate of MMP-9, IL-8 and LMP-1 were all 66.04% (35/53) and their average expression score were (33.19 +/- 29.73)%, (33.46 +/- 30.23)%, (35.49 +/- 29.63)% respectively. The expressions of MMP-9 and IL-8 both showed positive correlation with the expression of LMP-1 (r = 0.792, 0.786 respectively). The expressions of MMP-9, IL-8 and LMP-1 showed significant relationship with lymph nodes metastasis (P < 0.05), but no-significant association with age, gender, pathological classification, and clinical stage.@*CONCLUSION@#The expressions of MMP-9, IL-8 and LMP-1 were significantly associated with neck lymph nodes metastasis in nasopharyngeal carcinoma. The correlation between LMP-1 and MMP-9, IL-8 showed LMP-1 might enhance neck lymph nodes metastasis by up-regulating the expressions of MMP-9 and IL-8.