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Cysteinyl leukotriene receptor 1 antagonism prevents experimental abdominal aortic aneurysm
Karolinska Inst, Sweden.
Karolinska Inst, Sweden.
Karolinska Inst, Sweden; Tech Univ Munich, Germany.
Karolinska Inst, Sweden.
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2018 (Engelska)Ingår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 115, nr 8, s. 1907-1912Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Cysteinyl-leukotrienes (cys-LTs) are 5-lipoxygenase-derived lipid mediators involved in the pathogenesis and progression of inflammatory disorders, in particular asthma. We have previously found evidence linking these mediators to increased levels of proteolytic enzymes in tissue specimens of human abdominal aortic aneurysm (AAA). Here we show that antagonism of the CysLT1 receptor by montelukast, an established antiasthma drug, protects against a strong aorta dilatation (amp;gt;50% increase = aneurysm) in a mouse model of CaCl2-induced AAA at a dose comparable to human medical practice. Analysis of tissue extracts revealed that montelukast reduces the levels of matrix metalloproteinase-9 (MMP-9) and macrophage inflammatory protein-1 alpha (MIP-1 alpha) in the aortic wall. Furthermore, aneurysm progression was specifically mediated through CysLT1 signaling since a selective CysLT2 antagonist was without effect. A significantly reduced vessel dilatation is also observed when treatment with montelukast is started days after aneurysm induction, suggesting that the drug not only prevents but also stops and possibly reverts an already ongoing degenerative process. Moreover, montelukast reduced the incidence of aortic rupture and attenuated the AAA development in two additional independent models, i.e., angiotensin II- and porcine pancreatic elastase-induced AAA, respectively. Our results indicate that cys-LTs are involved in the pathogenesis of AAA and that antagonism of the CysLT1 receptor is a promising strategy for preventive and therapeutic treatment of this clinically silent and highly lethal disease.

Ort, förlag, år, upplaga, sidor
NATL ACAD SCIENCES , 2018. Vol. 115, nr 8, s. 1907-1912
Nyckelord [en]
abdominal aortic aneurysm; inflammation; leukotriene; montelukast
Nationell ämneskategori
Farmakologi och toxikologi
Identifikatorer
URN: urn:nbn:se:liu:diva-145761DOI: 10.1073/pnas.1717906115ISI: 000425495000074PubMedID: 29432192OAI: oai:DiVA.org:liu-145761DiVA, id: diva2:1192488
Anmärkning

Funding Agencies|Swedish Research Council [10350]; Stockholm County Council [20150517]; Linneus Grant Center of Excellence for Research on Inflammation and Cardiovascular Disease, Novo Nordisk Foundation [NNF15CC0018346, NNF15CC0018486]; Cardiovascular Program (CVP); Swedish Heart Lung Foundation [20120615, 20130664, 20140186, 20150423]; Ragnar Soderberg Foundation [M-14/55]; Karolinska Institutet CVP Career Development Grant; European Research Council (Starting Grant NORVAS); Karolinska Institutet

Tillgänglig från: 2018-03-22 Skapad: 2018-03-22 Senast uppdaterad: 2018-04-13

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