BACKGROUND: Estrogen acutely activates endothelial nitric oxide synthase (eNOS). However, the identity of the receptors involved in this rapid response remains unclear. METHODS AND RESULTS: We detected an estrogen receptor alpha (ERalpha) transcript in human endothelial cells that encodes a truncated 46-kDa ERalpha (Delta1a-hERalpha-46). A corresponding 46-kDa ERalpha protein was identified in endothelial cell lysates. Transfection of cDNAs encoding the full-length ERalpha (ERalpha-66) and D...Expand abstract
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Truncated estrogen receptor alpha 46-kDa isoform in human endothelial cells: relationship to acute activation of nitric oxide synthase.
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