Journal
VASCULAR PHARMACOLOGY
Volume 153, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.vph.2023.107215
Keywords
Elastic fiber fragmentation; Marfan syndrome; Fibrillin-1; Aortic aneurysm; MMP; TGF-beta; Elastin; Losartan; Angiotensin receptor blocker (ARB)
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This review summarizes the role of elastic fiber fragmentation in the pathogenesis of Marfan syndrome-associated aortic aneurysms and highlights its clinical significance for targeted interventions and potential therapeutic strategies.
Marfan syndrome (MFS) is an autosomal dominant connective tissue disorder caused by mutations in fibrillin 1 (FBN1) gene. These mutations result in defects in the skeletal, ocular, and cardiovascular systems. Aortic aneurysm is the leading cause of premature mortality in untreated MFS patients. Elastic fiber fragmentation in the aortic vessel wall is a hallmark of MFS-associated aortic aneurysms. FBN1 mutations result in FBN1 fragments that also contribute to elastic fiber fragmentation. Although recent research has advanced our understanding of MFS, the contribution of elastic fiber fragmentation to the pathogenesis of aneurysm formation remains poorly understood. This review provides a comprehensive overview of the molecular mechanisms of elastic fiber fragmentation and its role in the pathogenesis of aortic aneurysm progression. Increased comprehension of elastic fragmentation has significant clinical implications for developing targeted interventions to block aneurysm progression, which would benefit not only individuals with Marfan syndrome but also other patients with aneurysms. Moreover, this review highlights an overlooked connection between inhibiting aneurysm and the restoration of elastic fibers in the vessel wall with various aneurysm inhibitors, including drugs and chemicals. Investigating the underlying molecular mechanisms could uncover innovative therapeutic strategies to inhibit elastin fragmentation and prevent the progression of aneurysms.
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