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  • Title: Estrogen and progesterone receptor content of GnRH analogue pretreated and untreated uterine leiomyomata.
    Author: Regidor PA, Schmidt M, Callies R, Kato K, Schindler AE.
    Journal: Eur J Obstet Gynecol Reprod Biol; 1995 Nov; 63(1):69-73. PubMed ID: 8674569.
    Abstract:
    OBJECTIVES: The steroid receptor concentration and the histological morphology of uterine leiomyomata in premenopausal patients undergoing myomectomy therapy with and without a preoperative GnRH analogue, was analysed to evaluate whether the GnRH analogue therapy leads to important hormonal receptor changes, histomorphological changes and a significant shrinkage of the leiomyomata. STUDY DESIGN: Sixty-one GnRH analogue pretreated leiomyomata and 28 untreated leiomyomata were analysed. To determine the estrogen and progesterone receptor concentrations, immunohistochemical techniques were used and quantified with the immuno-reactive score (IRS-score). The leiomyomata were divided into cellular rich, normal, hyaline or cystic degenerated and necrotic according to their histology. RESULTS: The GnRH analogue pretreated leiomyomata group showed higher levels of estrogen and progesterone receptors than the untreated group (37.7% of the GnRH analogue group had a high positive and 29.5% a moderate positive estrogen receptor status whereas high levels of estrogen receptor could be found in only 14.3% of the untreated group). The leiomyomata of both groups with the exception of the necrotic ones, were estrogen and progesterone receptor positive. CONCLUSIONS: Our study suggests that pretreatment of uterine leiomyomata leads to a significant increase in the hormonal receptor concentration of these benign tumors. If pretreated leiomyomata are not removed surgically immediately after the therapy, a rapid regrowth can occur and again cause clinical symptoms.
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