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

Ramiprilat increases bradykinin outflow from isolated hearts of rat.

To establish that bradykinin is formed in the heart we measured bradykinin in the venous effluent from rat isolated hearts perfused with Krebs-Henseleit buffer. In addition, we examined the effect on bradykinin outflow of the angiotensin converting enzyme (ACE) inhibitor, ramiprilat. From rat isolated normoxic hearts a bradykinin outflow of 0.85 +/- 0.1 ng ml-1 perfusate g-1 wet weight was measured. Perfusion with ramiprilat increased the bradykinin concentration to 2.8 +/- 0.3 ng ml-1 perfusate g-1 wet weight. During ischaemia bradykinin outflow maximally increased 8.2 fold to 7.0 +/- 0.5 ng ml-1 perfusate g-1, and in ramiprilat-perfused hearts 5.8 fold to 16.0 +/- 1.8 ng ml-1 perfusate g-1. In the reperfusion period bradykinin outflow normalized to values measured in the respective pre-ischaemic period. The presents data show that bradykinin is continuously formed in the rat isolated heart. Ischaemia increases bradykinin outflow from the heart. Presumably by inhibiting degradation of kinins, ACE inhibition significantly increased the bradykinin concentration during normoxia, ischaemia and reperfusion.[1]


  1. Ramiprilat increases bradykinin outflow from isolated hearts of rat. Baumgarten, C.R., Linz, W., Kunkel, G., Schölkens, B.A., Wiemer, G. Br. J. Pharmacol. (1993) [Pubmed]
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