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

Estrogen inhibits the vascular injury response in estrogen receptor alpha-deficient mice.

The atheroprotective effects of estrogen in women are well recognized, but the underlying mechanisms responsible are not well understood. Blood vessel cells express the classic estrogen receptor, ER alpha (ref. 2-6), and are directly affected by estrogen, which inhibits the development of atherosclerotic and injury-induced vascular lesions. We have generated mice in which the ER alpha gene is disrupted and have used a mouse model of carotid arterial injury to compare the effects of estrogen on wild-type and estrogen receptor-deficient mice. Increases in vascular medial area and smooth muscle cell proliferation were quantified following vascular injury in ovariectomized mice treated with vehicle or with physiologic levels of 17 beta-estradiol. Surprisingly, in both wild-type and estrogen receptor-deficient mice, 17 beta-estradiol markedly inhibited to the same degree all measures of vascular injury. These data demonstrate that estrogen inhibits vascular by a novel mechanism that is independent of the classic estrogen receptor, ER alpha.[1]

References

  1. Estrogen inhibits the vascular injury response in estrogen receptor alpha-deficient mice. Iafrati, M.D., Karas, R.H., Aronovitz, M., Kim, S., Sullivan, T.R., Lubahn, D.B., O'Donnell, T.F., Korach, K.S., Mendelsohn, M.E. Nat. Med. (1997) [Pubmed]
 
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