Objectives: To investigate the regulation of the proteins ADAM-15 and ADAM-17 in intrauterine adhesions (IUA).
Study Design: 68 patients were found to have IUA in a study performed at our Department of Gynecology, and 18 control volunteer participants were recruited in the study. The patients with IUA were assigned to three groups according to the classification of March et al.: IUA-I (n=28), IUA-II (n=22), and IUA-III (n=18). All the volunteers were assigned to the control group (Con, n=18). The expression of ADAM-15 and ADAM-17 in the adhesive band tissue in patients and the endometrium in volunteers was detected by western blot, real-time PCR, and immunohistochemistry.
Results: The expression of ADAM-15 and ADAM-17 was significantly upregulated in both protein level and transcript level in IUA patients compared to that in controls. ADAM-15 expression was significantly higher in IUA-III (4.59±0.15) compared to IUA-II (3.18±0.12) and IUA-I (2.11±0.17; P<0.01). ADAM-17 expression was also significantly higher in IUA-III (3.25±0.11) compared to IUA-II (2.21±0.15) and IUA-I (1.78±0.21; P<0.01). The transcript levels of ADAM-15 and ADAM-17 showed similar patterns, and were markedly higher in grade III IUA patients compared to grade II and grade I. The severity of IUA was positively correlated to the protein and transcript expression level of ADAM-15 and ADAM-17 in uterine tissue.
Conclusions: The development of IUA is associated with regulation of ADAM15 and ADAM-17, which may be potential biological markers for evaluating the severity of intrauterine adhesions.
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