Project description:The aim of this study was to assess the relative gene expression in human AAA and AOD. Genome-wide expression analysis of abdominal aortic aneurysm (AAA) and aortic occlusive disease (AOD) specimens obtained from 20 patients with small AAA (mean maximum aortic diameter=54.3±2.3 mm), 29 patients with large AAA (mean maximum aortic diameter=68.4±14.3 mm), and 9 AOD patients (mean maximum aortic diameter=19.6±2.6 mm). Relative aortic gene expression was compared with that of 10 control aortic specimen of organ donors.
Project description:In this study we used microarrays to examine relative genes expression within the aorta of ApoE-/- infused with angiotensin II in relation to aneurysm formation. Infusion of angiotensin II induces aortic dilatation particularly of the suprarenal aorta in ApoE-/- mice. Based on studies carried out in our and other laboratories the response to angiotensin II is variable, with some mice developing large aneurysms but other animals appearing resistant to aneurysm formation with aortic diameters similar to that of saline controls. We compared RNA expression from whole aortas of 17 week old male ApoE-/- mice exposed to angiotensin II (1.44 µg/kg/min) for 4 weeks where there was clear evidence of aortic aneurysm formation (n=5) with that of mice failing to develop aneurysms (n=7) and those exposed to saline infusion (n=6). AAA was defined as diameter of suprarenal aorta greated than 1.5mm measured on photographs of aortas at necroscopy. Keywords: Disease state analysis 18 samples analysed, AAA (n=5), no AAA (n=7), saline (n=6). AAA - abdominal aortic aneurysm
Project description:Abdominal aortic aneurysm (AAA) is a permanent segmental dilatation of the abdominal aorta, contributing to a high mortality once rupture. We performed RNA-sequencing analysis of abdominal aorta tissues from 14 participants, including seven patients with AAA and seven control individuals.
Project description:Inflammation is still a crucial factor in the development of abdominal aortic aneurysm (AAA). The CD45+ cell population of elastase-induced murine AAA was deconstructed at the single-cell level using the single-cell RNA (scRNA) transcriptomic technique.
Project description:We report the transcriptomic analysis of RNA-seq of abdominal aortas isolated from ApoE-/- and ApoE-/-Nur77-/- mice mice exposed to Ang II to uncover the mechanisms underlying the undefined role of Nur77 in abdominal aortic aneurysm (AAA)
Project description:An abdominal aortic aneurysm (AAA) is a pathological dilatation of the aortic wall and it is a life-threatening disease due to the risk of rupture. Currently, surgical intervention remains the only definitive treatment recommended for large or rapidly expanding aneurysms. No pharmacological therapy is currently available to prevent AAA progression, as no drug has been proven effective. Diabetes is a major risk factor for cardiovascular disease in general. However, many studies over the last decade show that type 2 diabetes patients have a lower incidence of AAA and a slower aneurysm growth rate, which has been correlated with metformin use. We performed a proteomics analysis on resected aortic tissue from controls, non-diabetic (ND) and diabetic (D) AAA patients.
Project description:We report the transcriptomic analysis of RNA-seq of abdominal aortas isolated from WT and PSGL-1-/- mice exposed to deoxycorticosterone acetate (DOCA) plus salt to uncover the mechanisms underlying the undefined role of PSGL-1 in abdominal aortic aneurysm (AAA)
Project description:The ApoE -/- mice model of abdominal aortic aneurysm (AAA) involves introducing Angiotensin II subcutaneously to 14 week old male mice for 4 weeks by osmotic pump. A significant number of mice will develop aneurysm-like dilations in the suprarenal section of the abdominal aorta (SRA) that have a number of similarities to the human condition and make this a useful model of AAA. The mouse infrarenal aorta is very resistant to aneurysm formation while in humans AAA predominately occurs in the infrarenal section of the aorta (IRA). There have been a number of theories proposed to explain the site selctivity of aneurysm formation in AAA and this mice model. This study was designed to ascertain differences between SRA and IRA that may explain this site selectivity. Keywords: tissue type comparison
