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Arterial Disease

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https://www.readbyqxmd.com/read/29353319/management-strategies-for-noncardiac-surgery-following-a-coronary-artery-event
#1
REVIEW
Thomas F Whayne, Sibu P Saha
PURPOSE OF REVIEW: Coronary artery event includes acute coronary syndrome (ACS), percutaneous coronary intervention (PCI), and coronary artery bypass graft (CABG) surgery. Following such an event, risk of noncardiac surgery is increased. Of major concern is what can make this surgery safer? RECENT FINDINGS: High functional capacity improves cardiovascular (CV) risk; at least 4.0 metabolic equivalents (METs) on stress test are favorable. Risk scores can suggest need for further evaluation...
January 20, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29353224/coronary-microvascular-dysfunction-may-be-related-to-igf-1-in-acromegalic-patients-and-can-be-restored-by-therapy
#2
Sara Tellatin, Pietro Maffei, Elena Osto, Francesca Dassie, Giulia Famoso, Roberta Montisci, Chiara Martini, Francesco Fallo, Martina Perazzolo Marra, Roberto Mioni, Sabino Iliceto, Roberto Vettor, Francesco Tona
BACKGROUND AND AIMS: Acromegaly increases the risk of cardiovascular mortality. Data on the cardiovascular risk in asymptomatic acromegaly are limited. In particular, data on coronary microvascular abnormalities are lacking. We assessed coronary flow reserve (CFR) as a marker of coronary microvascular function in asymptomatic acromegaly. METHODS: We studied 40 acromegalic patients (23 male, age 52 ± 11 years) without clinical evidence of cardiovascular disease, and 40 control subjects matched for age and sex...
December 24, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29353219/blocking-mitochondrial-cyclophilin-d-ameliorates-tsh-impaired-defensive-barrier-of-artery
#3
Xiaojing Liu, Heng Du, Qiang Chai, Qing Jia, Lu Liu, Meng Zhao, Jun Li, Hui Tang, Wenbin Chen, Lifang Zhao, Li Fang, Ling Gao, Jiajun Zhao
AIMS: Endothelial cells (ECs) constitute the defensive barrier of vasculature, which maintains the vascular homeostasis. Mitochondrial oxidative stress (mitoOS) in ECs significantly affects the initiation and progression of vascular diseases. The higher serum thyroid stimulating hormone (TSH) level is being recognized as a nonconventional risk factor responsible for the increased risk of cardiovascular diseases in subclinical hypothyroidism (SCH). However, effects and underlying mechanisms of elevated TSH on ECs are still ambiguous...
January 9, 2018: Redox Biology
https://www.readbyqxmd.com/read/29353133/maternal-serum-uric-acid-levels-and-blood-pressure-during-pregnancy-a-community-based-cohort-study
#4
Guoli Zhou, Claudia Holzman, Zhehui Luo, Claire Margerison
OBJECTIVE: Studies find both very low and high serum uric acid (UA) levels are related to oxidative stress and to conditions such as cardiovascular diseases and chronic kidney disease in the general population. Pregnancy studies have focused only on high maternal UA. In present study, we tested whether unusually high and low levels of maternal serum UA are associated with increases in blood pressure (BP) during pregnancy. STUDY DESIGN: The Pregnancy Outcomes and Community Health Study enrolled 3019 pregnant women between their 16th-27th week of pregnancy from 52 clinics in 5 Michigan communities (1998-2004)...
January 9, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29352859/is-selective-5-ht1f-receptor-agonism-an-entity-apart-from-that-of-the-triptans-in-antimigraine-therapy
#5
REVIEW
Eloísa Rubio-Beltrán, Alejandro Labastida-Ramírez, Carlos M Villalón, Antoinette MaassenVanDenBrink
Migraine is a neurovascular disorder that involves activation of the trigeminovascular system and cranial vasodilation mediated by release of calcitonin gene-related peptide (CGRP). The gold standard for acute migraine treatment are the triptans, 5-HT1B/1D/(1F) receptor agonists. Their actions are thought to be mediated through activation of: (i) 5-HT1B receptors in cranial blood vessels with subsequent cranial vasoconstriction; (ii) prejunctional 5-HT1D receptors on trigeminal fibers that inhibit trigeminal CGRP release; and (iii) 5-HT1B/1D/1F receptors in central nervous system involved in (anti)nociceptive modulation...
January 17, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29352769/resolvin-e1-resolvin-d1-and-resolvin-d2-inhibit-constriction-of-rat-thoracic-aorta-and-human-pulmonary-artery-induced-by-the-thromboxane-mimetic-u46619
#6
Melanie Jannaway, Christopher Torrens, Jane A Warner, Anthony P Sampson
BACKGROUND AND PURPOSE: Omega-6 fatty acid-derived lipid mediators such as prostanoids, thromboxane and leukotrienes have well-established roles in regulating both inflammation and smooth muscle contractility. Resolvins are derived from omega-3 fatty acids and have important roles in promoting the resolution of inflammation, but their activity on smooth muscle contractility is unknown. We investigated whether resolvin E1 (RvE1), resolvin D1 (RvD1) and resolvin D2 (RvD2) can modulate contractions of isolated segments of rat thoracic aorta (RTA) or human pulmonary artery (HPA) induced by the α1 -adrenoceptor agonist phenylephrine or the stable thromboxane A2 mimetic U46619...
January 20, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352760/endothelial-function-estimated-by-digital-reactive-hyperemia-in-patients-with-atherosclerotic-risk-factors-or-coronary-artery-disease
#7
Jeehoon Kang, Hack-Lyoung Kim, Jae-Bin Seo, Jin-Yong Lee, Min-Kyong Moon, Woo-Young Chung
Due to the complex profile of atherosclerotic risk factors, an integrated analysis of a specific individual is difficult. Endothelial function reflects a composite of various risk factors, and may be used as an optimal tool to estimate the overall atherosclerotic risk. In this study, we investigated the value of digital Reactive Hyperemia Index (RHI) in an actual population with multiple atherosclerotic risk factors or coronary artery disease (CAD). A total of 417 patients from the Seoul National University Boramae Medical Center RHI registry were enrolled in this study...
January 19, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29352651/catheter-injected-bone-marrow-mesenchymal-stem-cells-induce-efficacious-occlusion-of-arteriovenous-nidus-in-a-swine-model
#8
Joseph Touma, Jianping Dai, Andre Gaston, Marianne Gervais, Eric Allaire
OBJECTIVES: Arteriovenous malformations (AVMs) are complex vascular lesions. Surgical excision is the treatment of choice, but is often not achievable. Embolo-sclerotherapy alone is associated with high recurrence rates. This study tested the hypothesis that seeding hydrogel conditioned bone marrow derived mesenchymatous stem cells (BM-MSCs) in an AVM nidus model induces solid microvascular occlusion through endoluminal tissue growth. METHODS: AVMs were modelled as arteriovenous microvascular nidus, using swine rete mirabile, a plexiform intracranial structure composed of arterial microvessels that extensively anastomose...
January 15, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29352570/the-nlrp3-inflammasome-and-the-emerging-role-of-colchicine-to-inhibit-atherosclerosis-associated-inflammation
#9
REVIEW
Gonzalo J Martínez, David S Celermajer, Sanjay Patel
Atherosclerosis is considered a chronic inflammatory disease of the arterial wall. Recently, compelling evidence has arisen for the role of monocytes and neutrophils and a particular protein complex that resides within these cells - the NLRP3 inflammasome - in atherosclerosis-associated inflammation. It is now also known that cholesterol crystals are present through all stages of atherosclerosis and can activate the NLRP3 inflammasome within these inflammatory cells to produce interleukin 1β and interleukin 18 - key mediators in the inflammatory cascade that drive plaque progression and instability...
December 25, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29352381/myocardial-perfusion-in-patients-with-suspected-coronary-artery-disease-comparison-between-320-mdct-and-rubidium-82-pet
#10
Roberto Nery Dantas, Antonildes Nascimento Assuncao, Ismar Aguiar Marques, Mateus Guimaraes Fahel, Cesar Higa Nomura, Luiz Francisco Rodrigues Avila, Maria Clementina Pinto Giorgi, Jose Soares, Jose Claudio Meneghetti, Jose Rodrigues Parga
OBJECTIVES: Despite advances in non-invasive myocardial perfusion imaging (MPI) evaluation, computed tomography (CT) multiphase MPI protocols have not yet been compared with the highly accurate rubidium-82 positron emission tomography (82RbPET) MPI. Thus, this study aimed to evaluate agreement between 82RbPET and 320-detector row CT (320-CT) MPI using a multiphase protocol in suspected CAD patients. METHODS: Forty-four patients referred for MPI evaluation were prospectively enrolled and underwent dipyridamole stress 82RbPET and multiphase 320-CT MPI (five consecutive volumetric acquisitions during stress)...
January 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29352380/integrated-prediction-of-lesion-specific-ischaemia-from-quantitative-coronary-ct-angiography-using-machine-learning-a-multicentre-study
#11
Damini Dey, Sara Gaur, Kristian A Ovrehus, Piotr J Slomka, Julian Betancur, Markus Goeller, Michaela M Hell, Heidi Gransar, Daniel S Berman, Stephan Achenbach, Hans Erik Botker, Jesper Moller Jensen, Jens Flensted Lassen, Bjarne Linde Norgaard
OBJECTIVES: We aimed to investigate if lesion-specific ischaemia by invasive fractional flow reserve (FFR) can be predicted by an integrated machine learning (ML) ischaemia risk score from quantitative plaque measures from coronary computed tomography angiography (CTA). METHODS: In a multicentre trial of 254 patients, CTA and invasive coronary angiography were performed, with FFR in 484 vessels. CTA data sets were analysed by semi-automated software to quantify stenosis and non-calcified (NCP), low-density NCP (LD-NCP, < 30 HU), calcified and total plaque volumes, contrast density difference (CDD, maximum difference in luminal attenuation per unit area) and plaque length...
January 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29352195/association-between-modified-cha2ds2-vasc-score-with-ankle-brachial-index%C3%A2-%C3%A2-0-9
#12
Po-Chao Hsu, Wen-Hsien Lee, Hsiang-Chun Lee, Wei-Chung Tsai, Chun-Yuan Chu, Ying-Chih Chen, Chee-Siong Lee, Tsung-Hsien Lin, Wen-Chol Voon, Sheng-Hsiung Sheu, Ho-Ming Su
The ankle-brachial index (ABI) is a reliable diagnostic examination for peripheral arterial occlusive disease (PAOD). We previously reported CHADS2 score was significantly correlated with PAOD. However, the association between CHA2DS2-VASc score and ABI < 0.9 is not evaluated in the literature. The aim of the present study was to investigate whether CHA2DS2-VASc score has a strong association with PAOD. We enrolled 1482 patients in this study. PAOD was defined as ABI < 0.9 in either leg. Vascular disease in CHA2DS2-VASc score was modified as vascular disease except PAOD...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352073/right-ventricular-myofilament-functional-differences-in-humans-with-systemic-sclerosis-associated-versus-idiopathic-pulmonary-arterial-hypertension
#13
Steven Hsu, Kristen M Kokkonen-Simon, Jonathan A Kirk, Todd M Kolb, Rachel L Damico, Stephen C Mathai, Monica Mukherjee, Ami A Shah, Fredrick M Wigley, Kenneth B Margulies, Paul M Hassoun, Marc K Halushka, Ryan J Tedford, David A Kass
Background -Patients with systemic sclerosis-associated pulmonary arterial hypertension (SSc-PAH) have a far worse prognosis than those with idiopathic PAH (IPAH). In the intact heart, SSc-PAH exhibits depressed rest and reserve right ventricular (RV) contractility as compared to IPAH. We tested whether this disparity involves underlying differences in myofilament function. Methods -Cardiac myocytes were isolated from RV septal endomyocardial biopsies from patients with SSc-PAH, IPAH, or SSc with exertional dyspnea but no resting PAH (SSc-d); control RV septal tissue was obtained from non-diseased donor hearts (6-7/group)...
January 19, 2018: Circulation
https://www.readbyqxmd.com/read/29351959/diagnosis-and-significance-of-pulmonary-microvascular-disease-in-diabetes
#14
Timothy J Roberts, Andrew T Burns, Richard J MacIsaac, Andrew I MacIsaac, David L Prior, André La Gerche
OBJECTIVE: To determine whether pulmonary microvascular disease is detectable in subjects with diabetes and associated with diminished exercise capacity using a novel echocardiographic marker quantifying the pulmonary transit of agitated contrast bubbles (PTAC). RESEARCH DESIGN AND METHODS: Sixty participants (40 with diabetes and 20 control subjects) performed cardiopulmonary (maximal oxygen consumption [VO2peak]) and semisupine bicycle echocardiography exercise tests within a 1-week period...
January 19, 2018: Diabetes Care
https://www.readbyqxmd.com/read/29351856/high-density-lipoprotein-with-apolipoprotein-c-iii-is-associated-with-carotid-intima-media-thickness-among-generally-healthy-individuals
#15
Rain Yamamoto, Frank M Sacks, Frank B Hu, Bernard Rosner, Jeremy D Furtado, Sarah A Aroner, Ele Ferrannini, Simona Baldi, Michaela Kozakova, Beverley Balkau, Andrea Natali, Majken K Jensen
BACKGROUND AND AIMS: About 6-7% of high density lipoprotein (HDL) has a protein called apolipoprotein (apo) C-III that regulates lipoprotein metabolism and can provoke an inflammatory response. HDL without apoC-III is inversely associated with coronary heart disease (CHD), whereas HDL with apoC-III is directly associated with CHD. We investigated how the presence of apoC-III affects the association between HDL and early stages of atherosclerosis measured as carotid intima-media thickness (cIMT)...
January 2, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29351744/risk-factors-for-first-time-acute-myocardial-infarction-patients-in-trinidad
#16
M Bahall, T Seemungal, G Legall
BACKGROUND: The relative importance of coronary artery disease (CAD) risk varies globally. The aim of this study was to determine CAD risk factors for acute myocardial infarction (AMI) among patients in public health care institutions in Trinidad using a case-control type study design. METHODS: The sample comprised 251 AMI patients hospitalized between March 1, 2011 and April 30, 2012 and 464 age- and sex-matched non-AMI patients with no terminal or life-threatening illness and who did not undergo treatment for CAD...
January 19, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29351739/a-study-of-the-association-of-rs12040273-with-susceptibility-and-severity-of-coronary-artery-disease-in-a-chinese-han-population
#17
Bo Yang, Shan Yan, Jianjun Yan, Yafei Li, Mohammad Reeaze Khurwolah, Liansheng Wang, Zhong Chen
BACKGROUND: The single nucleotide polymorphism (SNP) rs12040273, a variant of UDP-N-acetylgalactosamine, polypeptide GalNAc-transferase 2, has recently been reported to be significantly associated with development of carotid artery intima-media thickness (IMT) in a Chinese population based on a genome-wide association study. Because IMT is a potent marker of coronary artery disease (CAD), the aim of this study was to evaluate the relation of rs12040273 to susceptibility and severity of CAD in a Chinese Han population...
January 19, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29351695/reasons-for-failure-of-systemic-to-pulmonary-artery-shunts-in-neonates
#18
Keti Vitanova, Cornelius Leopold, Jelena Pabst von Ohain, Cordula Wolf, Elisabeth Beran, Rüdiger Lange, Julie Cleuziou
BACKGROUND:  Systemic-to-pulmonary artery shunt placement is an established palliative procedure for congenital heart disease. Although it is thought to be a simple operation, it is associated with significant morbidity and mortality. METHODS:  Data for all neonates who underwent surgery for a systemic-to-pulmonary artery shunt between 2000 and 2016 were reviewed. The study endpoints were shunt failure and shunt-related mortality. Shunt failure was defined as a shunt dysfunction because of thrombosis or stenosis requiring intervention or reoperation; shunt mortality was defined as death because of a shunt dysfunction...
January 19, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/29351682/radial-artery-fascial-flow-through-free-flap-for-combined-revascularization-in-moyamoya-disease
#19
Jonathan Russin, Joseph Carey
BACKGROUND: Free flaps are commonly used by other surgical subspecialties for soft tissue reconstruction and revascularization. Cranial applications of these flaps have been limited to only a single case report. OBJECTIVE: To present a new technique for combined revascularization in moyamoya disease using a flow-through free flap. METHODS: Data were obtained from an Institutional Review Board-approved, prospectively maintained database with informed consent from the patient...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351598/smooth-muscle-cells-of-intracranial-vessels-from-development-to-disease
#20
Juhana Frösen, Anne Joutel
Cerebrovascular diseases that cause ischemic or hemorrhagic stroke with subsequent loss of life or functional capacity due to damage of the brain tissue are among the leading causes of human suffering and economic burden inflicted by diseases in the developed world. Diseases affecting intracranial vessels are significant contributors to ischemic and hemorrhagic strokes. Brain arteriovenous malformations (bAVM), which are a collection of abnormal blood vessels connecting arteries to veins, are the most common cause of intracranial hemorrhage in children and young adults...
January 16, 2018: Cardiovascular Research
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