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- Title
Etanercept causes regression of endometriotic implants in a rat model.
- Authors
Yildirim, Gazi; Attar, Rukset; Ficicioglu, Cem; Karateke, Ates; Ozkan, Ferda; Yesildaglar, Narter
- Abstract
Objective: To determine the effects of etanercept (anti-TNF-α) on surgically induced endometriosis in a rat model. Materials and methods: This is a prospective, randomized, controlled, experimental study that was carried out at the Experimental Research Center of Yeditepe University (YUDETAM). Thirty female nonpregnant, nulligravid Wistar-Hannover albino rats were used. The summary of the technique: surgical induction of endometriosis, administration of estrogen for 2 weeks, and laparotomy; administration of etanercept for 2 weeks following the induction of endometriosis and laparotomy; administration of estrogen for 2 weeks and necropsy. The volume and histopathological scores of the endometriotic foci were evaluated. Results: One-hundred twenty uterine horns were implanted in 30 rats. Endometriosis was completely formatted in 112 lesions (93.3%). No rats were lost. In the etanercept group, the lesions' volumes were 83.9 ± 13.1, 47.2 ± 8.4, and 96.7 ± 34.8 mm at the end of the second week (pretreatment stage), at the end of the fourth week (post-treatment stage), and at the end of the sixth week, respectively ( P = 0.007). Histopathologic scores were 2.3 ± 0.2, 1.7 ± 0.2, and 1.9 ± 0.1, respectively ( P = 0.08). The changes in the other groups were not statistically significant. Conclusions: Etanercept, a fusion protein consisting of human recombinant soluble TNF receptor-2, neutralizes TNF activity. Anti-TNF therapy could be a new non-hormonal therapeutic option for the treatment of endometriosis in humans.
- Subjects
ETANERCEPT; DRUG efficacy; ENDOMETRIOSIS; TUMOR necrosis factors; LONGITUDINAL method; HISTOPATHOLOGY; LABORATORY rats; RANDOMIZED controlled trials
- Publication
Archives of Gynecology & Obstetrics, 2011, Vol 283, Issue 6, p1297
- ISSN
0932-0067
- Publication type
Article
- DOI
10.1007/s00404-010-1543-9