Correlation between matrix metalloproteinase-9 and endometriosis

Area of Science:

• Reproductive Medicine
• Biochemistry
• Oncology

Background:

• Endometriosis (EMS) is primarily caused by endometrial implantation.
• Matrix metalloproteinases (MMPs), particularly MMP-9, are implicated in extracellular matrix degradation and potentially in EMS pathogenesis.

Purpose of the Study:

• To investigate serum and ascites levels of MMP-9 in EMS patients.
• To explore the correlation between MMP-9 expression and EMS occurrence and progression.

Main Methods:

• Recruited 100 EMS patients and control subjects (hysteromyoma patients).
• Collected peripheral blood and ascites samples.
• Quantified MMP-9 levels using gelatin zymogram and ELISA.

Main Results:

• MMP-9 levels were significantly higher in serum and ascites of EMS patients compared to controls.
• Elevated MMP-9 was observed in eutopic endometrium compared to ectopic endometrium.
• MMP-9 levels increased with advanced disease stage and during the proliferative phase.

Conclusions:

• Endometrial implantation site, clinical stage, and proliferative cycle are independent risk factors for EMS.
• Elevated serum and ascites MMP-9 are characteristic of EMS.
• Higher MMP-9 expression is associated with ectopic endometrium, advanced stage, and the proliferative stage in EMS.