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

Contributions of vasopressin and other pressor systems to DOC-salt hypertension in rats.

The roles of arginine vasopressin ( AVP), the sympathetic nervous system, and the renin-angiotensin system in maintaining elevated blood pressure in established DOC-salt hypertension in rats were studied by injection of specific antagonists of these systems. The specific AVP antagonist dPVDAVP decreased blood pressure by 19 +/- 3 mm Hg in hypertensive rats and 6 +/- 2 mm Hg in control rats. In a different group of rats ganglionic blockade with chlorisondamine also caused a greater decrease in blood pressure in DOC-salt rats compared to controls (99 +/- 6 vs 58 +/- 4 mm Hg, respectively). In rats with autonomic ganglia blocked subsequent vasopressin antagonism decreased blood pressure 29 +/- 4 mm Hg in DOC-salt rats and 14 +/- 2 mm Hg in control rats. Converting enzyme inhibition with captopril in rats with autonomic ganglia blocked caused a lesser decrease in blood pressure in DOC-salt rats than in controls (8 +/- 2 vs 14 +/- 2 mm Hg, respectively). These results indicate that both AVP and the sympathetic nervous system contribute to the maintenance of DOC-salt hypertension. The renin-angiotension system appears to be relatively less important.[1]

References

  1. Contributions of vasopressin and other pressor systems to DOC-salt hypertension in rats. Mento, P.F., Wang, H.H., Sawyer, W.H. Proc. Soc. Exp. Biol. Med. (1984) [Pubmed]
 
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