Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Moalli, P.A. et al.

Regulation of matrix metalloproteinase expression by estrogen in fibroblasts that are derived from the pelvic floor.

OBJECTIVE: The purpose of this study was to determine whether estrogen suppresses matrix metalloproteinase-2 and -9 proenzyme expression by fibroblasts that are derived from the supportive connective tissue of the pelvic floor. STUDY DESIGN: A primary fibroblast culture that was developed from a biopsy specimen of the arcus tendineus was treated with interleukin-1 beta (10-15 ng/mL), transforming growth factor-beta 1 (5-15 ng/mL), 17 beta-estradiol (10(-9)-10(-7) mol/L), and Imperial Chemical Industries (ICI) 182 780 (10(-8)-10(-6) mol/L). Cellular and extracellular protein were analyzed by Western blotting and substrate zymography, respectively, for the effect of each treatment on the amount of pro-matrix metalloproteinase-2 and -9 and the membrane type 1 matrix metalloproteinase protein. RESULTS: Both cellular and extracellular pro-matrix metalloproteinase-2 protein were increased by transforming growth factor-beta1 (P =.01) and decreased by estradiol (P <.001) and ICI 182 780 (P =.02 and.002, respectively). Membrane type 1 matrix metalloproteinase was not affected by estradiol, ICI 182 780, interleukin-1 beta, or transforming growth factor-beta 1. Extracellular pro-matrix metalloproteinase-9 was increased by the cytokines interleukin-1 beta (P <.001) and transforming growth factor-beta1 (P <.001) and decreased by estradiol (P <.001) and ICI 182 780 (P <.001). CONCLUSION: The proenzymes of the tissue-degrading matrix metalloproteinases -2 and -9 are decreased by 17-beta estradiol and ICI 182 780.[1]

References

Regulation of matrix metalloproteinase expression by estrogen in fibroblasts that are derived from the pelvic floor. Moalli, P.A., Klingensmith, W.L., Meyn, L.A., Zyczynski, H.M. Am. J. Obstet. Gynecol. (2002) [Pubmed]

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