Endometrial patterns during danazol and buserelin therapy for endometriosis: comparative structural and...

Area of Science:

• Reproductive Medicine
• Endocrinology
• Gynecologic Pathology

Background:

• Endometriosis is a condition characterized by endometrial tissue outside the uterus.
• Hormonal therapies are commonly used to manage endometriosis symptoms.
• Understanding the endometrial response to these therapies is crucial for treatment optimization.

Purpose of the Study:

• To compare the effects of danazol and intranasal buserelin on endometrial structure and ultrastructure in patients with endometriosis.
• To evaluate the temporal changes in endometrial morphology during 6 months of treatment.
• To assess the potential for similar effects on ectopic endometrial tissue.

Main Methods:

• Serial endometrial biopsy specimens were collected from patients with endometriosis before and at 3 and 6 months of treatment.
• Histological, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used for ultrastructural analysis.
• Six morphometric indices were evaluated to quantify endometrial changes.

Main Results:

• Danazol induced a progestational effect on endometrial glands and stroma, leading to significant mucosal hypotrophy.
• Buserelin treatment resulted in weakly proliferative or inactive endometrium.
• Both treatments induced noncyclicity and endometrial hypotrophy, albeit through different mechanisms.

Conclusions:

• Danazol and buserelin exhibit distinct mechanisms but similar overall effects of endometrial hypotrophy and noncyclicity.
• The earlier onset of the atrophic effect with danazol suggests its potential utility in short-term endometriosis therapy.
• These findings may inform the management of ectopic endometrial implants.