title: Efficacy of gonadotropin-releasing hormone agonist and an extended-interval dosing regimen in the treatment of patients with adenomyosis and endometriosis.
abstract: OBJECTIVE
  To determine the effects of gonadotropin-releasing hormone agonist (GnRH-a) and an extended-interval dosing regimen in the treatment of patients with adenomyosis and endometriosis.
  
  
  METHODS
  This was a prospective observational study in the setting of a hospital outpatient clinic. Seventy women suffering from adenomyosis and endometriosis were randomly divided into 2 groups: extended-interval dosing (experimental group) and conventional dosing (control group).
  
  
  METHODS
  Patients in the experimental group received a 4-dose regimen (triptorelin 3.75 mg by intramuscular injection every 6 weeks for a total of 4 doses). The patients in the control group received a conventional regimen (1 injection every 4 weeks for a total of 6 doses). The main outcome measures were relief and recurrence of dysmenorrhea and related climacteric symptoms, reduction of uterine volume, and serum levels of 17-beta-oestradiol (E(2)), luteinizing hormone (LH), and follicle-stimulating hormone (FSH).
  
  
  RESULTS
  The reliving rate of dysmenorrhea was 100% in patients treated with both the new regimen and the convention regimen after 6 months. The uterine volume was reduced 37.6% and 39.2%, respectively. And the levels of LH, FSH and E(2) were decreased significantly (p < 0.001). The E(2 )levels were reduced to the postmenopausal level. The hormone profile of the experimental group was similar to that of the control group (p > 0.05).
  
  
  CONCLUSIONS
  The use of the extended-interval dosing regimen of triptorelin depot in patients with adenomyosis or endometriosis results in a consistent hypo-oestrogenised state, which is similar to that achieved by the conventional regimen. The new regimen reduces the cost of treatment.
authors.affiliation: Department of Obstetrics and Gynecology, First Municipal Hospital Affiliated to Guangzhou Medical College, Panfu Road 1, Yuexiu, Guangzhou, PR China.
authors.forename: Jia-li
authors.initials: JL
authors.lastname: Kang
authors.forename: Xiao-xia
authors.initials: XX
authors.lastname: Wang
authors.forename: Miao-ling
authors.initials: ML
authors.lastname: Nie
authors.forename: Xiao-hui
authors.initials: XH
authors.lastname: Huang
mesh_terms: D000328:Adult; D003692:Delayed-Action Preparations; D004334:Drug Administration Schedule; D004412:Dysmenorrhea / Q000097:blood / Q000188:drug therapy*; D004715:Endometriosis / Q000097:blood / Q000188:drug therapy*; D004958:Estradiol / Q000097:blood; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists*; D006801:Humans; D007273:Injections, Intramuscular; D007986:Luteinizing Hormone / Q000097:blood; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D017329:Triptorelin Pamoate / Q000008:administration & dosage*; D014599:Uterus / Q000033:anatomy & histology / Q000187:drug effects; D055815:Young Adult
chemical_list: D003692:Delayed-Action Preparations; D017329:Triptorelin Pamoate; D007987:Gonadotropin-Releasing Hormone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone