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Sökning: WFRF:(Mints Miriam) > (2005-2009)

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  • Ha, Chunfang, et al. (författare)
  • Adrenomedullin and its receptor, calcitonin receptor-like receptor, are aberrantly expressed in women with idiopathic menorrhagia
  • 2009
  • Ingår i: Molecular Medicine Reports. - 1791-2997. ; 2:1, s. 7-11
  • Tidskriftsartikel (refereegranskat)abstract
    • The human endometrium undergoes a unique process of benign angiogenesis under the control of ovarian steroids during reproductive life. Aberrant angiogenesis has been implicated in idiopathic menorrhagia, a common gynaecological complaint. One of the key factors involved in endometrial angiogenesis is adrenomedullin (AM), a multifunctional 52-amino acid peptide. AM mediates the activities of endometrial angiogenesis via calcitonin receptor-like receptor (CLR). The objective of the present study was to compare the endometrial expression of AM and CRL in women with and without idiopathic menorrhagia. Endometrial biopsies were obtained from 9 women with menorrhagia (>= 80 ml per menstruation) and 12 women with normal blood loss (<80 ml per menstruation). Protein and mRNA expression levels of AM and CLR were determined using immunohistochemistry and real-time PCR. Compared to the controls, patients with menorrhagia exhibited low immunostaining intensity of AM, while high CLR staining was observed in the epithelium (p<0.05). No difference in mRNA expression was observed between the groups. These data suggest that an imbalance in the AM/CLR system might alter endometrial angiogenesis in menorrhagia.
  • Hildenbrand, Anna, et al. (författare)
  • Aquaporin 1 is expressed in the human endometrium during normal cycle and increases after mifepristone treatment.
  • 2008
  • Ingår i: International Journal of Molecular Medicine. - 1107-3756 .- 1791-244X. ; 22:1, s. 49-53
  • Tidskriftsartikel (refereegranskat)abstract
    • Aquaporin-1 (AQP1) is involved in the angiogenesis and structural modifications of microvessels and possibly also in the pathogenesis of idiopathic menhorrhagia, where a reduced AQP1 expression is seen in the endometrium. Mifepristone treatment induces reduced menstrual bleeding and amenorrhea and also has a direct effect on endometrial arterioles. Administered with gestagen-only contraceptive methods, antiprogestins improve the bleeding pattern. The objective of this study was to evaluate the AQP1 expression in endometrial blood vessels during normal cycle and after mifepristone treatment. Localization and expression of AQP1 was determined using immunohistochemistry and reverse transcriptase chain reaction (RT-PCR) in 43 biopsies from human endometrium taken during a normal cycle and after mifepristone treatment. AQP1 expression in human endometrial vessels is not cycle dependent and is stronger in capillaries and arteries than in veins. After mifepristone treatment the staining intensity was increased, but not the number of stained vessels. The presence of AQP1 was also confirmed using RT-PCR. The changes in AQP1 expression could contribute to the reduced bleeding seen following mifepristone treatment and could be an effect of either antagonizing progesterone or cortisol.
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