doi: 10.1038/ncb1787 90 HeX.ZhangH.ZhangY.YeY.WangS.BaiR.et al
Semaglutide is a synthetic analog of the human incretin hormone glucagon-like peptide-1 (GLP-1), sharing roughly 94% sequence homology with native GLP-1 but modified for stability: an alpha-aminoisobutyric acid substitution at position 8 resists DPP-4 degradation and a C18 fatty-diacid chain promotes albumin binding, together extending its half-life to about one week
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Few studies in animals have indicated that GLP-1 RAs may affect the tone of coronary arteries through inhibition of vasospasm or promotion of vasodilatation ( ex vivo rat models, GLP-1 reversed the contraction of excised coronary artery rings induced by a thromboxane receptor agonist ( The vasodilatory effects of GLP-1 RAs can be mediated through GLP-1 receptors or alternative pathways