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

The effects of candesartan on human AT1 receptor-expressing Chinese hamster ovary cells.

Chinese hamster ovary cells expressing the cloned human angiotensin II receptor of the AT1 subtype (CHO-AT1 cells) were used as an 'in vitro" model system to investigate the action mechanism of the nonpeptide AT1 receptor blocker candesartan. In the presence of 10 mM LiCl, angiotensin II causes a long-lasting increase in the production of inositol phosphates in these cells. This effect is dose-dependent with half-maximal stimulation (EC50) at 3 nM angiotensin II. Pre-incubation of the cells for 30 min at 37 degrees C with candesartan decreases the maximal response to angiotensin II by up to 90%, with a half-maximal decrease at 0.5 nM candesartan. At this concentration, candesartan only produces a slight rightward shift of the angiotensin II dose-response curve. Recovery experiments on CHO-AT1 cells reveal that the inhibitory effect of candesartan is only slowly reversed after removal of the blocker. The insurmountable effect of candesartan can therefore be ascribed to its long-lasting inhibition of the AT1 receptor.[1]

References

  1. The effects of candesartan on human AT1 receptor-expressing Chinese hamster ovary cells. Vauquelin, G., Fierens, F.L., De Backer, J.P., Vanderheyden, P.M. J. Am. Soc. Nephrol. (1999) [Pubmed]
 
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