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Aortic pathology

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https://www.readbyqxmd.com/read/29053451/spatially-resolved-mr-compatible-doppler-ultrasound-proof-of-concept-for-triggering-of-diagnostic-quality-cardiovascular-mri-for-function-and-flow-quantification-at-3t
#1
Lindsey A Crowe, Gibran Manasseh, Aneta Chmielewski, Anne-Lise Hachulla, Daniel Speicher, Andreas Greiser, Hajo Muller, Thomas De Perrot, Jean-Paul Vallee, Rares Salomir
OBJECTIVES: We demonstrate the use of a Magnetic-Resonance (MR)-compatible ultrasound (US) imaging probe using spatially-resolved Doppler for diagnostic quality cardiovascular MR imaging as an initial step towards hybrid US/MR fetal imaging. METHODS: A newly developed technology for a dedicated MR-compatible phased array ultrasound-imaging probe acquired pulsed color Doppler carotid images, which were converted in near-real time to a trigger signal for cardiac cine and flow quantification MRI...
October 17, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29051139/mining-the-stiffness-sensitive-transcriptome-in-human-vascular-smooth-muscle-cells-identifies-long-noncoding-rna-stiffness-regulators
#2
Christopher Yu, Tina Xu, Richard Assoian, Daniel J Rader
OBJECTIVE: Vascular extracellular matrix stiffening is a risk factor for aortic and coronary artery disease. How matrix stiffening regulates the transcriptome profile of human aortic and coronary vascular smooth muscle cells (VSMCs) is not well understood. Furthermore, the role of long noncoding RNAs (lncRNAs) in the cellular response to stiffening has never been explored. This study characterizes the stiffness-sensitive (SS) transcriptome of human aortic and coronary VSMCs and identifies potential key lncRNA regulators of stiffness-dependent VSMC functions...
October 19, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29047330/deletion-of-the-nr4a-nuclear-receptor-nor1-in-hematopoietic-stem-cells-reduces-inflammation-but-not-abdominal-aortic-aneurysm-formation
#3
Hua Qing, Karrie L Jones, Elizabeth B Heywood, Hong Lu, Alan Daugherty, Dennis Bruemmer
BACKGROUND: The NR4A3 orphan nuclear hormone receptor, NOR1, functions as a constitutively active transcription factor to regulate inflammation, proliferation, and cell survival during pathological vascular remodeling. Inflammatory processes represent key mechanisms leading to abdominal aortic aneurysm (AAA) formation. However, a role of NOR1 in AAA formation has not been investigated previously. METHODS: Inflammatory gene expression was analyzed in bone marrow-derived macrophages isolated from NOR1-deficient mice...
October 18, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29046727/elevated-circulating-fasting-glucagon-like-peptide-1-in-surgical-patients-with-aortic-valve-disease-and-diabetes
#4
Camilla Krizhanovskii, Stelia Ntika, Christian Olsson, Per Eriksson, Anders Franco-Cereceda
BACKGROUND: Diabetes is a risk factor for peripheral, coronary, and cerebrovascular disease. In contrast, results also indicate that patients with diabetes have reduced prevalence of aortic aneurysms, although the mechanisms remain largely unknown. We hypothesize that altered endogenous secretion of the intestinal hormone glucagon-like peptide-1 (GLP-1)-previously shown to protect from aneurysm formation, and governing many of the mechanisms thought to be involved in aneurysm formation-may provide insights into the mechanisms underlying the inverse relationship of diabetes and aneurysm...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29045943/reference-ranges-for-fetal-atrioventricular-and-ventriculoatrial-time-intervals-and-their-ratios-during-normal-pregnancy
#5
Beatrice Mosimann, Georgios Arampatzis, Sofia Amylidi-Mohr, Anice Bessire, Marialuigia Spinelli, Petros Koumoutsakos, Daniel Surbek, Luigi Raio
BACKGROUND: The diagnostic assessment of fetal arrhythmias relies on the measurements of atrioventricular (AV) and ventriculoatrial (VA) time intervals. Pulsed Doppler over in- and outflow of the left ventricle and tissue Doppler imaging are well-described methods, while Doppler measurements between the left brachiocephalic vein and the aortic arch are less investigated. The aim of this study was to compare these methods of measurement, to find influencing factors on AV and VA times and their ratio, and to create reference ranges...
October 19, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/29045589/standardization-of-adult-transthoracic-echocardiography-reporting-in-agreement-with-recent-chamber-quantification-diastolic-function-and-heart-valve-disease-recommendations-an-expert-consensus-document-of-the-european-association-of-cardiovascular-imaging
#6
Maurizio Galderisi, Bernard Cosyns, Thor Edvardsen, Nuno Cardim, Victoria Delgado, Giovanni Di Salvo, Erwan Donal, Leyla Elif Sade, Laura Ernande, Madalina Garbi, Julia Grapsa, Andreas Hagendorff, Otto Kamp, Julien Magne, Ciro Santoro, Alexandros Stefanidis, Patrizio Lancellotti, Bogdan Popescu, Gilbert Habib
Aims: This European Association Cardiovascular Imaging (EACVI) Expert Consensus document aims at defining the main quantitative information on cardiac structure and function that needs to be included in standard echocardiographic report following recent ASE/EACVI chamber quantification, diastolic function, and heart valve disease recommendations. The document focuses on general reporting and specific pathological conditions such as heart failure, coronary artery and valvular heart disease, cardiomyopathies, and systemic diseases...
October 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29045289/genetic-origins-of-tetralogy-of-fallot
#7
Ari Morgenthau, William H Frishman
Due to improved survival and clinical outcomes, congenital heart disease is an area of growing importance within the medical community. As these patients reach adulthood and have children, there has been a growing appreciation for the increased risk of CHD among their offspring, strongly implying a genetic element. Given the growing wealth of genetic data available and these clinical implications, this review serves to re-examine the role of genetics within CHD, using Tetralogy of Fallot as a model pathology...
October 17, 2017: Cardiology in Review
https://www.readbyqxmd.com/read/29042101/machine-learning-phenotypic-classification-of-bicuspid-aortopathy
#8
Charles M Wojnarski, Eric E Roselli, Jay J Idrees, Yuanjia Zhu, Theresa A Carnes, Ashley M Lowry, Patrick H Collier, Brian Griffin, John Ehrlinger, Eugene H Blackstone, Lars G Svensson, Bruce W Lytle
BACKGROUND: Bicuspid aortic valves (BAV) are associated with incompletely characterized aortopathy. Our objectives were to identify distinct patterns of aortopathy using machine-learning methods and characterize their association with valve morphology and patient characteristics. METHODS: We analyzed preoperative 3-dimensional computed tomography reconstructions for 656 patients with BAV undergoing ascending aorta surgery between January 2002 and January 2014. Unsupervised partitioning around medoids was used to cluster aortic dimensions...
September 14, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29040313/premature-aortic-smooth-muscle-cell-differentiation-contributes-to-matrix-dysregulation-in-marfan-syndrome
#9
Matthew Dale, Matthew P Fitzgerald, Zhibo Liu, Trevor Meisinger, Andrew Karpisek, Laura N Purcell, Jeffrey S Carson, Paul Harding, Haili Lang, Panagiotis Koutakis, Rishi Batra, Constance J Mietus, George Casale, Iraklis Pipinos, B Timothy Baxter, Wanfen Xiong
Thoracic aortic aneurysm and dissection are life-threatening complications of Marfan syndrome (MFS). Studies of human and mouse aortic samples from late stage MFS demonstrate increased TGF-β activation/signaling and diffuse matrix changes. However, the role of the aortic smooth muscle cell (SMC) phenotype in early aneurysm formation in MFS has yet to be fully elucidated. As our objective, we investigated whether an altered aortic SMC phenotype plays a role in aneurysm formation in MFS. We describe previously unrecognized concordant findings in the aortas of a murine model of MFS, mgR, during a critical and dynamic phase of early development...
2017: PloS One
https://www.readbyqxmd.com/read/29034225/the-perception-of-a-three-dimensional-printed-heart-model-from-the-perspective-of-different-stakeholders-a-complex-case-of-truncus-arteriosus
#10
Giovanni Biglino, Sarah Moharem-Elgamal, Matthew Lee, Robert Tulloh, Massimo Caputo
The case of an 11-year-old male patient with truncus arteriosus is presented. The patient has a right aortic arch, a repaired truncus arteriosus, pulmonary artery stenosis, as well as conduit stenosis, with a complex surgical plan being discussed. In order to gather additional insight into the patient's anatomy prior to the surgery and to facilitate communication with the patient's parents, a three-dimensional (3D) model of his heart and main vessels was created from computed tomography data. Feedback was collected from different stakeholders...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29034042/description-of-the-surgical-strategy-used-for-the-treatment-of-a-complex-disease-report-of-a-case
#11
Kazuki Kihara, Miwa Tashiro, Kohei Miyashita, Masaki Yamamoto, Hironobu Hirose, Takashi Fukutomi, Hideaki Nishimori, Kazumasa Orihashi
We report a rare case in which a patient required three surgeries with competing priorities. In a 68-year-old man diagnosed with an abdominal aortic aneurysm (AAA), computed tomography (CT) revealed an infrarenal AAA, unusual thickening of the sigmoid colon that suggested cancer, and a filling defect in the left atrium. We considered the disease stage, which affects prognosis, and the risk of complications that could interfere with the treatment of the other pathologies and developed a three-stage surgical strategy: (i) endovascular aortic repair, (ii) sigmoid colectomy, and (iii) resection of the left atrial mass...
June 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29034041/successful-endovascular-repair-of-mycotic-aortic-pseudoaneurysm-followed-by-aortoesophageal-fistula
#12
Seiichi Yamaguchi, Hideki Ueda, Hisanori Fujita, Shigeyasu Takeuchi
Mycotic aneurysm of the aorta is a rare, but life-threatening pathology. In recent years, endovascular stent graft placement has been introduced as an effective alternative for treating infected aortic aneurysms. A 64-year-old woman with a history of paraplegia due to spinal cord injury was referred to our institute with fever and blood-tinged sputum. Computed tomography (CT) scan showed an 11-cm pseudoaneurysm arising from the proximal descending aorta, which was normal 1 month ago at the previous CT scan...
June 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29034019/hybrid-repair-of-an-abdominal-aortic-aneurysm-debranching-with-endovascular-aneurysm-repair-in-a-patient-with-horseshoe-kidney
#13
Keiwa Kin, Hiroshi Takano, Takaya Nakagawa, Yukitoshi Shirakawa
Abdominal aortic aneurysm (AAA) with associated horseshoe kidney (HSK) poses a technical challenge when performing conventional open surgical repair because of possible complications including renal infarction, neuralgia, and collecting system disruption. Endovascular aortic repair (EVAR) is considered the first-line treatment for this pathology, allowing for aneurysm repair without isthmus bisection. However, whether to sacrifice commonly presenting aberrant renal arteries during EVAR is a point of controversy...
March 24, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29033732/double-aortic-arch-presenting-with-respiratory-distress-a-case-report-and-review-of-the-literature
#14
Abdelhafid Houba, Mustapha Bensghir, Redouane Ahtil, Badr Slioui, Hicham Balkhi, Salim Jaafar Lalaoui
Tracheal compression by vascular structures in infants is uncommon and may be masked by nonspecific respiratory symptoms. Double aortic arch (DAA) is the most common vascular ring. We describe a case of a 9-month-old male infant presented with respiratory distress and found to have a DAA. In this report, the authors emphasize the consideration of this pathology-induced respiratory distress and discuss its anesthetic management.
October 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/29029397/tsp1-promotes-alveolar-stem-cell-proliferation-and-its-down-regulation-relates-to-lung-inflammation-in-intralobar-pulmonary-sequestration
#15
Kuan Li, Qi Wu, Xin Sun, Yan Geng, Dong Leng, Hongwei Li, Subei Zhang, Qiaoxing Wang, Junping Wu, Long Xu, Xue Li, Yu Li, Qiuyang Zhang, Adrianne Kurkciyan, Jiurong Liang, Dianhua Jiang, Huaiyong Chen
An aberrant systemic artery supply results in recurrent infections in the abnormal lung lobe of intralobar pulmonary sequestration (ILS). The mechanisms underlying such persistent inflammation are unknown. Here, we hypothesize that alteration of an endothelial cell niche for alveolar epithelial cells results in the impaired proliferation potential of alveolar progenitor cells, leading to the defective defense mechanism in intralobar pulmonary sequestration. Paraffin sections of lung tissues from patients with intralobar pulmonary sequestration or from healthy controls were collected for analysis of alveolar epithelial alterations in intralobar pulmonary sequestration by quantitative RT-PCR or immunofluorescent staining...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29022854/single-center-mid-term-experience-with-chimney-graft-technique-for-the-preservation-of-flow-to-the-supra-aortic-branches
#16
Robert Shahverdyan, Spyridon Mylonas, Michael Gawenda, Jan Brunkwall
Objectives To investigate the feasibility and the mid-term outcomes of the chimney-graft technique for the revascularization of supra-aortic branches in patients with thoracic aortic pathologies involving the aortic arch. Methods A retrospective analysis of a prospectively maintained database between January 2010 and July 2016 was performed. Primary endpoints were 30-day and overall mortality. Secondary endpoints were technical success, target vessel patency, stroke/transitory ischemic attack and type I/III endoleak rate...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/29022822/a-late-presentation-of-loeys-dietz-syndrome-associated-with-an-aortic-root-aneurysm
#17
A Harky, M Garner, N Roberts
Loeys-Dietz syndrome (LDS) is characterised by a mutation in the transforming growth factor beta receptor, and is strongly associated with aortic aneurysms and rupture. Most cases of LDS present in the second decade of life, with the average life expectancy being 37 years. We report a case of suspected LDS (owing to significant family history of the disorder) that presented in the seventh decade of life. Our patient had aortic root dilation and was initially believed to have Marfan syndrome. However, subsequent tests were negative...
February 13, 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29019011/a-systematic-review-and-meta-analysis-of-mechanical-vs-biological-composite-aortic-root-replacement-early-and-1-year-results
#18
Mohamad Bashir, Amer Harky, Saied Froghi, Benjamin Adams, Megan Garner, Prity Gupta, Aung Oo, Rakesh Uppal
OBJECTIVE: Composite aortic root replacement is a standard procedure for various aortic root pathologies. This systematic review was set to identify the postoperative outcomes for composite mechanical root replacement (mCRR) compared to composite biological root replacement (bCRR). METHODS: We systematically reviewed four major databases for all papers assessing outcomes in composite root replacement. Articles selected were chosen by two reviewers. Amongst our inclusion and exclusion criteria, all pediatric populations were excluded as were studies with a cohort less than 50 patients...
October 10, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29017630/poor-perinatal-growth-impairs-baboon-aortic-windkessel-function
#19
A H Kuo, J Li, C Li, H F Huber, P W Nathanielsz, G D Clarke
The ability of the aorta to buffer blood flow and provide diastolic perfusion (Windkessel function) is a determinant of cardiovascular health. We have reported cardiac dysfunction indicating downstream vascular abnormalities in young adult baboons who were intrauterine growth restricted (IUGR) at birth as a result of moderate maternal nutrient reduction. Using 3 T MRI, we examined IUGR offspring (eight male, eight female; 5.7 years; human equivalent 25 years) and age-matched controls (eight male, eight female; 5...
October 11, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29016735/lncrna-tug1-sponges-mir-204-5p-to-promote-osteoblast-differentiation-through-upregulating-runx2-in-aortic-valve-calcification
#20
Cong Yu, Lifu Li, Fei Xie, Shichao Guo, Fayuan Liu, Nianguo Dong, Yongjun Wang
Aims: Emerging evidence indicates that long non-coding RNAs (lncRNAs) play a vital role in cardiovascular physiology and pathology. Although the lncRNA TUG1 is implicated in atherosclerosis, its function in calcific aortic valve disease (CAVD) remains unknown. Methods and Results: In this study, we found that TUG1 was highly expressed in human aortic valves and primary valve interstitial cells (VICs). Moreover, TUG1 knockdown induced inhibition of osteoblast differentiation in CAVD both in vitro and in vivo ...
September 4, 2017: Cardiovascular Research
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