Cited by 133Coagulation, Bradykinin, Polyphosphates, and AngioedemaRenin-Angiotensin System StudiesEicosanoids and Hypertension Pharmacology

Effect of bradykinin metabolism inhibitors on evoked hypotension in rats: rank efficacy of enzymes associated with bradykinin-mediated angioedema

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Fryer, R M, Segreti, J, Banfor, P N, Widomski, D L, Backes, B J, Lin, C W, Ballaron, S J, Cox, B F +3 more·2008·British Journal of Pharmacology

Abstract

Background and purpose: Inhibition of bradykinin metabolizing enzymes (BMEs) can cause acute angioedema, as demonstrated in a recent clinical trial in patients administered the antihypertensive, omapatrilat. However, the relative contribution of specific BMEs to this effect is unclear and confounded by the lack of a predictive pre‐clinical model of angioedema. Experimental approach: Rats were instrumented to record blood pressure and heart rate; inhibitors were infused for 35 min and bradykinin was infused during the last 5 min to elicit hypotension, as a functional marker of circulating bradykinin and relative angioedema risk. Key results: In the presence of omapatrilat bradykinin produced dose‐dependent hypotension, an effect abolished by B 2 blockade. In the presence of lisinopril (ACE inhibitor), but not candoxatril (NEP inhibitor) or apstatin (APP inhibitor), bradykinin also elicited hypotension. Lisinopril‐mediated hypotension was unchanged with concomitant blockade of NEP or NEP/DPPIV (candoxatril+A‐899301). However, hypotension was enhanced upon concomitant blockade of APP and further intensified in the presence of NEP inhibition to values not different from omapatrilat alone. Conclusions and implications: We demonstrated that bradykinin is degraded in vivo with an enzyme rank‐efficacy of ACE>APP≫NEP or DPPIV. These results suggest the effects of omapatrilat are mediated by inhibition of three BMEs, ACE/APP/NEP. However, dual inhibition of ACE/NEP or ACE/NEP/DPPIV elicits no increased risk of angioedema compared to ACE inhibition alone. Thus, novel BME inhibitors must display no activity against APP to avoid angioedema risk due to high prevalence of ACE inhibitor therapy in patients with diabetes and cardiovascular disease. British Journal of Pharmacology (2008) 153 , 947–955; doi: 10.1038/sj.bjp.0707641 ; published online 17 December 2007

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Authors
Fryer, R. M., Segreti, J., Banfor, P. N., Widomski, D. L., Backes, B. J., Lin, C. W., Ballaron, S. J., Cox, B. F., Trevillyan, J. M., Reinhart, G. A., & von Geldern, T. W.
Affiliations
Abbott (United States) (US)
Corresponding author
Fryer, R M
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2008-03
Volume
153
Issue
5
Pages
947-955
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W1560143001
Cited by
130
References
59
Citations by year
2026: 2 · 2025: 5 · 2024: 5 · 2023: 3 · 2022: 4 · 2021: 3 · 2020: 7 · 2019: 5 · 2018: 12 · 2017: 7 · 2016: 18 · 2015: 14 · 2014: 6 · 2013: 14 · 2012: 8
FWCI
1.30
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Genetics › Coagulation, Bradykinin, Polyphosphates, and Angioedema
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
angioedema, omapatrilat, lisinopril, ACE inhibitors, aprotinin, neprilysin, dipeptidyl peptidase IV, bradykinin degradation, drug safety
MeSH terms
Aminopeptidases, Angioedema, Angiotensin-Converting Enzyme Inhibitors, Animals, Bradykinin, Dose-Response Relationship, Drug, Drug Evaluation, Preclinical, Enzyme Inhibitors, Hypotension, Indans, Male, Peptides, Propionates, Pyridines, Thiazepines, Neprilysin, Rats, Sprague-Dawley, Lisinopril, Rats

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