Endothelium-derived relaxing factor, nitric oxide: effects on and production by mesangial cells and the glomerulus.
The endothelium-derived relaxing factor nitric oxide (EDRF/NO) is a labile, endogenous vasodilator that is important in the control of systemic vascular tone. This review focuses on the effects of EDRF/NO on glomerular mesangial cells in vitro and on the role of EDRF/NO in mesangial and glomerular physiology and pathophysiology in vivo. It was concluded that EDRF/NO can stimulate increases in cGMP, inhibit mesangial cell contraction, and inhibit growth factor-induced proliferation of mesangial cells in culture. Furthermore, incubation with endotoxin or cytokines stimulates mesangial cells to produce EDRF/NO, via an inducible NO synthase enzyme. Therefore, it is likely that NO could play a role in the inflammatory response within the glomerulus. Finally, recent studies providing evidence that EDRF/NO is functional within the glomerulus in vivo, especially during endotoxemia and inflammation are also reviewed.
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Raij
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Shultz
D000818:Animals; D006152:Cyclic GMP / Q000378:metabolism; D005920:Glomerular Mesangium / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques; D007678:Kidney Glomerulus / Q000502:physiology*; D009569:Nitric Oxide / Q000378:metabolism / Q000502:physiology*
D009569:Nitric Oxide; D006152:Cyclic GMP