Journal
GROWTH FACTORS
Volume 28, Issue 6, Pages 452-460Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/08977194.2010.511619
Keywords
Nerve growth factor; NGF receptor p75; NGF-specific tyrosine kinase receptor-A (TrkA); immunohistochemistry; adenomyosis
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Funding
- Yonsei University College of Medicine [6-2008-0112]
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The levonorgestrel-releasing intrauterine system (LNG-IUS) is effective in the treatment of dysmenorrhea associated with adenomyosis However, the mechanism of pain relief of LNG-IUS in patients with adenomyosis is unclear We aimed to investigate the effects of LNG-IUS on the expression of nerve growth factor (NGF) and its receptors, NGFR p75 and TrkA in patients with adenomyosis Endometrial and myometrial tissues were prepared from 17 LNG-IUS-treated patients and 15 hormonally untreated patients who had undergone hysterectomies for adenomyosis Immunohistochemistry with antibodies against NGF, NGFR p75, and TrkA, was performed The expression of NGF, NGFR p75, and TrkA in endometrium and myometrium of LNG-IUS-treated patients was significantly decreased compared to those of hormonally untreated patients Our findings may indicate that the suppression of NGF and its receptors by LNG-IUS is another possible mechanism of relieving pain in patients with adenomyosis
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