{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T16:30:01Z","timestamp":1759336201092,"version":"3.41.2"},"reference-count":20,"publisher":"Portland Press Ltd.","issue":"5","license":[{"start":{"date-parts":[[2019,9,19]],"date-time":"2019-09-19T00:00:00Z","timestamp":1568851200000},"content-version":"vor","delay-in-days":141,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["portlandpress.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,5,31]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Angiotensin (Ang) A is formed by the decarboxylation of the N terminal residue of AngII. The present study determined whether this one amino acid change impacted effects of AngII on abdominal aortic aneurysm (AAA) formation in mice. Computational analyses implicated that AngA had comparable binding affinity to both AngII type 1 and 2 receptors as AngII. To compare effects of these two octapeptides in vivo, male low-density lipoprotein receptor (Ldlr) or apolipoprotein E (Apoe) deficient mice were infused with either AngII or AngA (1 \u03bcg\/kg\/min) for 4 weeks. While AngII infusion induced AAA consistently in both mouse strains, the equivalent infusion rate of AngA did not lead to AAA formation. We also determined whether co-infusion of AngA would influence AngII-induced aortic aneurysm formation in male Apoe\u2212\/\u2212 mice. Co-infusion of the same infusion rate of AngII and AngA did not change AngII-induced AAA formation. Since it was reported that a 10-fold higher concentration of AngA elicited comparable vasoconstrictive responses as AngII, we compared a 10-fold higher rate (10 \u03bcg\/kg\/min) of AngA infusion into male Apoe\u2212\/\u2212 mice with AngII (1 \u03bcg\/kg\/min). This rate of AngA led to abdominal aortic dilation in three of ten mice, but no aortic rupture, whereas the 10-fold lower rate of AngII infusion led to abdominal aortic dilation or rupture in eight of ten mice. In conclusion, AngA, despite only being one amino acid different from AngII, has diminished effects on aortic aneurysmal formation, implicating that the first amino acid of AngII has important pathophysiological functions.<\/jats:p>","DOI":"10.1042\/bsr20182055","type":"journal-article","created":{"date-parts":[[2019,4,3]],"date-time":"2019-04-03T21:56:27Z","timestamp":1554328587000},"update-policy":"https:\/\/doi.org\/10.1042\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["One amino acid change of Angiotensin II diminishes its effects on abdominal aortic aneurysm"],"prefix":"10.1042","volume":"39","author":[{"given":"Ya","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Cardiology, The Second Affiliated Hospital, Cardiovascular Key Laboratory of Zhejiang Province, College of Medicine, Zhejiang University Hangzhou, Zhejiang, 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Cardiovascular Key Laboratory of Zhejiang Province, College of Medicine, Zhejiang University Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinliang","family":"Nan","sequence":"additional","affiliation":[{"name":"Department of Cardiology, The Second Affiliated Hospital, Cardiovascular Key Laboratory of Zhejiang Province, College of Medicine, Zhejiang University Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinghai","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Cardiology, The Second Affiliated Hospital, Cardiovascular Key Laboratory of Zhejiang Province, College of Medicine, Zhejiang University Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hong","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Cardiology, The Second Affiliated Hospital, Cardiovascular Key Laboratory of Zhejiang Province, College 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