Expression of phosphorylated-signal transduction and activator of transcription 3(Y705) in adenomyosis and their clinical significances

Objective To investigate the role of phosphorylated-signal transduction and activator of transcription 3( p-STAT3)( Y705) and vascular endothelial growth factor( VEGF) in the development of adenomyosis by detecting the expression of p-STAT3( Y705) and VEGF in normal endometrium and eutopic endometrium of adenomyosis patients.Methods The localization and expression of p-STAT3( Y705) and VEGF in 14 cases of normal endometrium and 14 cases of eutopic endometrium of adenomyosis patients were detected by immunohistochemical SP method. Real-time PCR was performed to understand the expression of signal transduction and activator of transcription 3( STAT3) mRNA in normal endometrium and eutopic endometrium of adenomyosis patients. The protein levels of p-STAT3( Y705),STAT3 and VEGF in normal endometrium and eutopic endometrium of adenomyosis patients were detected by Western blotting. Results In the normal endometrium and eutopic endometrium of adenomyosis,p-STAT3( Y705) was mainly located in the nucleus of the glandular epithelium. p-STAT3( Y705) had higher expression in adenomyosis groups than that in control( P 0. 05). In the normal endometrium and eutopic endometrium of adenomyosis,there was no significant difference in the expression of STAT3 mRNA and protein levels( P > 0. 05). VEGF immunostaining mainly localized in the the glandular epithelial cells. In ectopic endometrium of adenomyosis,the expression of VEGF was significantly higher than the controls( P 0. 05). Conclusion p-STAT3( Y705) may play a role via promoting angiogenesis in the development of the adenomyosis.