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Titel: Aortic Regurgitation Is Associated With Ascending Aortic Remodeling in the Nondilated Aorta
VerfasserIn: Balint, Brittany
Federspiel, Jan M.
Schwab, Tanja
Ehrlich, Tristan
Ramsthaler, Frank
Schäfers, Hans-Joachim
Sprache: Englisch
Titel: Arteriosclerosis, Thrombosis, and Vascular Biology
Bandnummer: 41
Heft: 3
Seiten: 1179-1190
Verlag/Plattform: American Heart Association
Erscheinungsjahr: 2021
Freie Schlagwörter: aortic stenosis
aortic valve disease
apoptosis
extracellular matrix
fibrillin
DDC-Sachgruppe: 610 Medizin, Gesundheit
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Objective: The probability of aortic complications in patients with bicuspid aortic valve is higher in association with aortic regurgitation (AR) compared with aortic stenosis (AS) or normally functioning valves. The objective of this study was to determine whether this is related to the specific characteristics of aneurysmatic dilatation that includes AR or whether AR itself has a negative impact on the aortic wall, independent of aneurysmatic dilatation. Approach and Results: Nondilated aortic specimens were harvested intraoperatively from individuals with tricuspid aortic valves and either AS (n=10) or AR (n=16). For controls, nondilated aortas were harvested during autopsies from individuals with tricuspid aortic valves and no evidence of aortic valve disease (n=10). Histological and immunohistochemical analyses revealed that compared with control aortas, overall medial degeneration was more severe in AR-aortas (P=0.005) but not AS-aortas (P=0.23). This pathological remodeling included mucoid extracellular matrix accumulation (P=0.005), elastin loss (P=0.003), elastin fragmentation (P=0.008), and decreased expression of fibrillin (P=0.003) and collagen (P=0.008). Furthermore, eNOS (endothelial nitric oxide synthase) expression was decreased in the intima (P=0.0008) and in vasa vasorum (P=0.004) of AR-aortas but not AS-aortas (all P>0.05). Likewise, subendothelial apoptosis was increased in AR-aortas (P=0.03) but not AS-aortas (P=0.50). Conclusions: AR has a negative effect on the nondilated ascending aortic wall. Accordingly, our results support the need for more detailed studies of the aortic wall in relation to aortic valve disease and may ultimately lead to more aggressive clinical monitoring and/or surgical criteria for patients with relevant AR.
DOI der Erstveröffentlichung: 10.1161/ATVBAHA.120.315739
URL der Erstveröffentlichung: https://doi.org/10.1161/ATVBAHA.120.315739
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-385628
hdl:20.500.11880/34754
http://dx.doi.org/10.22028/D291-38562
ISSN: 1524-4636
1079-5642
Datum des Eintrags: 13-Dez-2022
Bezeichnung des in Beziehung stehenden Objekts: Supplemental data
In Beziehung stehendes Objekt: https://www.ahajournals.org/doi/suppl/10.1161/ATVBAHA.120.315739/suppl_file/ATVB_ATVB-2020-315739D_supp1.pdf
Fakultät: M - Medizinische Fakultät
Fachrichtung: M - Chirurgie
M - Rechtsmedizin
Professur: M - Prof. Dr. Hans Joachim Schäfers
M - Keiner Professur zugeordnet
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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