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

1A-779 attenuates angiotensin-(1-7) depressor response in salt-induced hypertensive rats.

Chronic infusion of angiotensin-(1-7) [Ang-(1-7)] lowers blood pressure in salt-induced and spontaneously hypertensive (SHR) rats. In the present study, we have examined the acute effect of Ang-(1-7) in salt-induced hypertension using Dahl salt-sensitive rats placed on low (0.3%) or high (8.0% NaCl) salt diets for 2 weeks. Rats fed a high salt diet showed a greater rise in BP than those fed a low salt diet. Ang-(1-7) (24 microg/kg) reduced mean arterial pressure (MAP), enhanced the release of prostacyclin and nitric oxide, and suppressed thromboxane A(2) levels. A-779 (48 microg/kg, i.v), a selective Ang-(1-7) antagonist, partially blocked these effects of Ang-(1-7). The Ang-(1-7)-induced depressor response observed in these animals was related to an increase in vasodilatory prostanoids, a decrease in the constrictor prostanoid thromboxane A(2), and an increase in nitric oxide levels in both plasma and isolated aortic rings.[1]


  1. 1A-779 attenuates angiotensin-(1-7) depressor response in salt-induced hypertensive rats. Bayorh, M.A., Eatman, D., Walton, M., Socci, R.R., Thierry-Palmer, M., Emmett, N. Peptides (2002) [Pubmed]
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