Comparisons of P2X3 protein levels among different endometrial tissues.

A. Western blot showed a specific band (55 kDa) for P2X3 in ectopic, eutopic and control endometrium. B. The levels of P2X3 protein expression in the eutopic and ectopic endometrium of women with endometriosis were both significantly higher as compared with control endometrium from women without endometriosis. C. Both in ectopic and eutopic endometrium, the levels of P2X3 protein expression significantly increased from endometriosis patients with pain than those without pain. D. There was a positive correlation between P2X3 expression levels in ectopic or eutopic endometrium which were isolated from the same patient. As an endogenous control protein, GAPDH protein expression levels showed similar among ectopic, eutopic or control endometrium. (Ec), Ectopic endometrium; (Eu), Eutopic endometrium; (Con), Control endometrium. (*P<0.05. **P<0.01.)