2026-06-01T10:35:07Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/356702026-02-03T11:07:32Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Henn, Dominic author Bandner-Risch, Doris author Perttunen, Hilja author Schmied, Wolfram author Porras-Martín, Carlos author Rodríguez-Losada, Noela author Schäfers, Hans-Joachim author 2013 Hypertension and congenital aortic valve malformations are frequent causes of ascending aortic aneurysms. The molecular mechanisms of aneurysm formation under these circumstances are not well understood. Reference genes for gene activity studies in aortic tissue that are not influenced by aortic valve morphology and its hemodynamic consequences, aortic dilatation, hypertension, or antihypertensive medication are not available so far. This study determines genes in ascending aortic tissue that are independent of these parameters. Tissue specimens from dilated and undilated ascending aortas were obtained from 60 patients (age #70 years) with different morphologies of the aortic valve (tricuspid undilated n = 24, dilated n = 11; bicuspid undilated n = 6, dilated n = 15; unicuspid dilated n = 4). Of the studied individuals, 36 had hypertension, and 31 received ACE inhibitors or AT1 receptor antagonists. The specimens were obtained intraoperatively from the wall of the ascending aorta. We analyzed the expression levels of 32 candidate reference genes by quantitative RTPCR (RT-qPCR). Differential expression levels were assessed by parametric statistics. The expression analysis of these 32 genes by RT-qPCR showed that EIF2B1, ELF1, and PPIA remained constant in their expression levels in the different specimen groups, thus being insensitive to aortic valve morphology, aortic dilatation, hypertension, and medication with ACE inhibitors or AT1 receptor antagonists. Unlike many other commonly used reference genes, the genes EIF2B1, ELF1, and PPIA are neither confounded by aortic comorbidities nor by antihypertensive medication and therefore are most suitable for gene expression analysis of ascending aortic tissue. https://hdl.handle.net/10630/35670 10.1371/journal.pone.0054132 Aneurismas aórticos Identification of Reference Genes for Quantitative RT-PCR in Ascending Aortic Aneurysms.