Endocrine responses to long-term administration of the antiprogesterone RU486 in patients with pelvic endometriosis

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This study investigated the endocrine effects of prolonged RU486 administration in patients diagnosed with pelvic endometriosis.

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Abstract

OBJECTIVE: To examine endocrine and clinical responses to long-term administration of RU486 in patients with endometriosis. DESIGN: Prospective open trial. SETTING: Faculty practice of the authors. PATIENTS, PARTICIPANTS: Six normally cycling women with endometriosis were recruited. INTERVENTIONS: Subjects received RU486 100 mg/d for 3 months. MAIN OUTCOME MEASURE(S): Hormonal changes during RU486 were compared with control data obtained in the preceding cycle during the early follicular phase. Clinical responses were determined by patient assessment and second-look laparoscopy. RESULTS: All women became amenorrheic, and daily urinary levels of ovarian steroid metabolites remained acyclic. Mean luteinizing hormone (LH) (P less than 0.02) and LH pulse amplitude (P less than 0.05) were increased without changes in LH pulse frequency. An antiglucocorticoid effect was demonstrated by an increase in serum cortisol (P less than 0.01) and adrenocorticotropic hormone (P less than 0.05) levels. Treatment resulted in an improvement in pelvic pain in all subjects without significant change in the extent of disease as evaluated by follow-up laparoscopy. CONCLUSIONS: Daily administration of RU486 results in acyclic ovarian function and improvement in the subjective painful symptoms of endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Endocrine Glands Endometriosis Mifepristone Pelvic Neoplasms Progesterone Adolescent Adolescent Adrenocorticotropic Hormone Adrenocorticotropic Hormone Adrenocorticotropic Hormone Adult Adult Amenorrhea Amenorrhea Amenorrhea Endocrine Glands Endocrine Glands Endometriosis Endometriosis Endometriosis

Citation neighborhood (2-hop)

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. Outer rings show 2-hop neighbours — papers reached through the immediate citers/citees. [ collapse to 1-hop ]

References (29)

Cited by (50)

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europepmc
last seen: 2026-10-14T06:08:39.101224+00:00
openalex
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pubmed
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