<prompt> True regarding endothelin-l are all exceptBronchodilationVasoconstrictionDecreased GFRHas inotropic effect  <response>: Bronchodilatation ET, is primarily a paracrine regulator. It causes vasoconstriction, Bronchoconstriction, cardiac stimulation ionotropic action, a release of aldosterone and ANP, and a decrease in GFR due to contraction of mesangial cells of the kidney. 