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Intimal thickness

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https://www.readbyqxmd.com/read/29241989/similar-degree-of-intimal-hyperplasia-in-surgically-detected-stenotic-and-nonstenotic-arteriovenous-fistula-segments-a-preliminary-report
#1
Juan C Duque, Marwan Tabbara, Laisel Martinez, Angela Paez, Guillermo Selman, Loay H Salman, Omaida C Velazquez, Roberto I Vazquez-Padron
BACKGROUND: Intimal hyperplasia has been historically associated with improper venous remodeling and stenosis after creation of an arteriovenous fistula. Recently, however, we showed that intimal hyperplasia by itself does not explain the failure of maturation of 2-stage arteriovenous fistulas. We seek to evaluate whether intimal hyperplasia plays a role in the development of focal stenosis of an arteriovenous fistula. METHODS: This study compares intimal hyperplasia lesions in stenotic and nearby nonstenotic segments collected from the same arteriovenous fistula...
December 11, 2017: Surgery
https://www.readbyqxmd.com/read/29227169/descriptive-study-of-the-relationship-between-the-subclinical-carotid-disease-and-biomarkers-carotid-femoral-pulse-wave-velocity-in-patients-with-hypertension
#2
XiaoXiao Zhao, Liujin Bo, Hongwei Zhao, Lihong Li, Yingyan Zhou, Hongyu Wang
BACKGROUND: Carotid intima-media thickness (cIMT) is a significant early prediction signal for preclinical atherosclerosis. Plasma homocysteine (Hcy) level is an independent risk factor for cardiovascular diseases. Pulse wave velocity (PWV), an index of arterial stiffness (AS), has showed its value in the evaluation of AS in vascular-related diseases. The data regarding the relationships between cIMT and other indices of vascular damage are limited and partly controversial. We aim to investigate the relationships between cIMT and other indices of vascular damage such as Hcy and carotid femoral PWV (CF-PWV)...
December 11, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29214807/self-assembled-core-shell-cdte-poly-3-hexylthiophene-nanoensembles-as-novel-donor-acceptor-light-harvesting-systems
#3
Emin Istif, Antonia Kagkoura, Javier Hernández-Ferrer, Anastasios Stergiou, Theodosis Skaltsas, Raul Arenal, Ana M Benito, Wolfgang K Maser, Nikos Tagmatarchis
The self-assembly of novel core-shell nanoensembles consisting of regioregular poly(3-hexylthiophene) nanoparticles (P3HTNPs) of 100 nm as core and semiconducting CdTe quantum dots (CdTeQDs) as shell with a thickness of a few tens of nanometers was accomplished by employing a re-precipitation approach. The structure, morphology and composition of P3HTNPs/CdTeQDs nanoensembles were confirmed by high-resolution scanning transmission microscopy and dynamic light scattering studies. Intimate interface contact between the CdTeQDs shell and the P3HTNPs core leads to the stabilization of the P3HTNPs/CdTeQDs nanoensemble as probed by steady-state absorption spectroscopy...
December 7, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29194769/intravascular-ultrasound-of-the-proximal-left-anterior-descending-artery-is-sufficient-to-detect-early-cardiac-allograft-vasculopathy
#4
Vincent Floré, Adam J Brown, Stephen J Pettit, Nick Ej West, Clive Lewis, Jayan Parameshwar, Stephen P Hoole
MAIN PROBLEM: Cardiac allograft vasculopathy (CAV) can be detected early with intravascular ultrasound (IVUS) but there is limited information on the most efficient imaging protocol. METHODS: Coronary angiography and IVUS of the 3 coronary arteries were performed. Volumetric IVUS analysis was performed and a Stanford grade determined for each vessel. RESULTS: 18 patients were included 18 (range 12-24) months after transplantation. Angiographic CAV severity ranged from none (CAV0) to mild (CAV1) whereas IVUS CAV severity ranged from none (Stanford grade I) to severe (grade IV)...
November 30, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/29184167/effect-of-nebivolol-or-atenolol-vs-placebo-on-cardiovascular-health-in-subjects-with-borderline-blood-pressure-the-evidence-study
#5
Daniel A Duprez, Natalia Florea, Sue Duval, Catherine Koukol, Jay N Cohn
Pharmacotherapy to protect the arteries may be appropriate for individuals with high-normal blood pressure who are at risk for future cardiovascular disease (CVD). Nebivolol (NEB) in contrast to atenolol (ATE) may have a beneficial effect on endothelial function and may be more effective than ATE in preventing CVD. Sixty subjects with preHTN or borderline BP and abnormal small artery elasticity (SAE) underwent evaluation with 10 tests, including large and small artery elasticity, resting and treadmill exercise BP, carotid intimal-media thickness, retinal vascular photography, micro-albuminuria, electrocardiography, echocardiography, and plasma B-type natriuretic peptide level...
November 28, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29175120/urinary-mirna-377-and-mirna-216a-as-biomarkers-of-nephropathy-and-subclinical-atherosclerotic-risk-in-pediatric-patients-with-type-1-diabetes
#6
Mona Hussein El-Samahy, A A Adly, Yasmine Ibrahim Elhenawy, E A Ismail, Shaimaa Abdelmalik Pessar, Mohamed El-Sayed Mowafy, Mohammed Salah Saad, Hossam Hassan Mohammed
BACKGROUND: Urinary microRNAs (miRNAs) play a role in the pathogenesis of chronic kidney disease (CKD). AIM: To identify the expression of urinary miR-377 and miR-216a in 50 children and adolescents with type 1 diabetes (T1DM) compared with 50 healthy controls and assess their relation to the degree of albuminuria, glycemic control and carotid intimal thickness (CIMT) as an index of atherosclerosis. METHODS: Diabetic subjects were divided into normoalbuminuric and microalbuminuric groups according to urinary albumin creatinine ration (UACR)...
November 7, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29130662/-the-role-of-bone-morphogenic-protein-4-in-the-progression-of-vein-graft-hyperplastic-remodeling-under-hyperglycemic-condition
#7
Deng-Feng Fang, Hong-Wei Zhang, Jun Gu, Kang-Jun Fan, Huai-Min Liang, Jia-Yu Shen, Er-Yong Zhang, Jia Hu
OBJECTIVE: This study was designed to assess the vessel wall characteristics and the expression levels of bone morphogenic protein4(BMP4) and proliferating cell antigen Ki67 in vein grafts harvested from diabetic rats,and to investigate the role of BMP4 in progression of vein graft hyperplastic remodeling under hyperglycemic condition. METHODS: 48 male SpragueDawky rats [body mass (194±16) g] aged 8 weeks were randomly divided into diabetes mellitus (DM) group ( n=24) and nondiabetes mellitus (NDM) group ( n=24)...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29098987/fabrication-of-highly-ordered-2d-metallic-arrays-with-disc-in-hole-binary-nanostructures-via-a-newly-developed-nanosphere-lithography
#8
Xi Yang, Wei Guo, Xixi Wang, Mingdun Liao, Pingqi Gao, Jichun Ye
2D metallic arrays with binary nanostructures derived from a nanosphere lithography (NSL) method have been rarely reported. Here, we demonstrate a novel NSL strategy to fabricate highly ordered 2D gold arrays with disc-in-hole binary (DIHB) nanostructures in large scale by employing a sacrificing layer combined with a three-step lift-off process. The structural parameters of the resultant DIHB arrays, such as periodicity, hole diameter, disc diameter and thicknesses can be facilely controlled by tuning the nanospheres size, etching condition, deposition angle and duration, respectively...
November 24, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29076814/effects-of-rivaroxaban-on-intimal-hyperplasia-and-smooth-muscle-cell-proliferation-at-the-carotid-artery-anastomosis-site-in-rabbits
#9
Gökmen Akkaya, Çağatay Bilen, Tuğra Gençpınar, Pınar Akokay, Baran Uğurlu
OBJECTIVE: This study aimed to assess the effect of new generation oral, direct factor Xa inhibitor rivaroxaban on intimal hyperplasia and smooth muscle cell proliferation at the carotid artery anastomosis site of rabbits. METHODS: In total, 14 New Zealand male rabbits weighing 3-3.5 kg were randomized into two groups. Group A (7 rabbits) served as the control group and received no medication. Rivaroxaban was perorally administered to group B (7 rabbits) mg/kg/day for 28 days...
October 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29075042/imatinib-alters-agonists-mediated-cytoskeletal-biomechanics-in-lung-endothelium
#10
X Wang, R Bleher, L Wang, J G N Garcia, S M Dudek, G S Shekhawat, V P Dravid
The endothelium serves as a size-selective barrier and tightly controls the fluid exchange from the circulation to the surrounding tissues. In this study, a multiplexed microscopy characterization is developed to study the spatio-temporal effects of Abl kinases on endothelial cytoskeletal structure using AFM, SEM, and immunofluorescence. Sphingosine 1-phosphate (S1P) produces significant endothelial barrier enhancement by means of peripheral actin rearrangement. However, Abl kinase inhibition by imatinib reduces rapid redistribution of the important cytoskeletal proteins to the periphery and their association with the cortical actin ring...
October 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29063904/study-of-carotid-intimal-medial-thickness-in-essential-hypertension-with-or-without-left-ventricular-hypertrophy
#11
Himanshu Khutan, Simmi Aggarwal, K S Kajal, Ravinder Garg, Rupinderjeet Kaur, Amanpreet Kaur
INTRODUCTION: Hypertension and atherosclerosis though separate entities, are interrelated as hypertension plays an important role in the pathogenesis of atherosclerosis. This study was undertaken to study the association of carotid intimal medial thickness with left ventricular hypertrophy (LVH) in hypertensive patients. MATERIALS AND METHODS: Hundred hypertensives (JNC-7, Stage 1 and 2) between 30 and 55 years were enrolled in this prospective observational study conducted at a tertiary care teaching institute of Punjab, India...
October 2017: Annals of African Medicine
https://www.readbyqxmd.com/read/29046624/designing-thin-ultrastretchable-electronics-with-stacked-circuits-and-elastomeric-encapsulation-materials
#12
Renxiao Xu, Jung Woo Lee, Taisong Pan, Siyi Ma, Jiayi Wang, June Hyun Han, Yinji Ma, John A Rogers, Yonggang Huang
Many recently developed soft, skin-like electronics with high performance circuits and low modulus encapsulation materials can accommodate large bending, stretching, and twisting deformations. Their compliant mechanics also allows for intimate, nonintrusive integration to the curvilinear surfaces of soft biological tissues. By introducing a stacked circuit construct, the functional density of these systems can be greatly improved, yet their desirable mechanics may be compromised due to the increased overall thickness...
January 26, 2017: Advanced Functional Materials
https://www.readbyqxmd.com/read/29022136/aortic-carotid-intima-media-thickness-and-flow-mediated-dilation-as-markers-of-early-atherosclerosis-in-a-cohort-of-pediatric-patients-with-rheumatic-diseases
#13
Emanuela Del Giudice, Anna Dilillo, Luciana Tromba, Giuseppe La Torre, Sara Blasi, Fabrizio Conti, Franca Viola, Salvatore Cucchiara, Marzia Duse
The aims of this study were to identify the presence of endothelial dysfunction as a marker of early atherosclerosis by measuring aortic and carotid intimal-medial thickness (aIMT and cIMT) and flow-mediated dilation (FMD) and their correlation with traditional and no traditional risk factors for atherosclerosis in children with rheumatic diseases. Thirty-nine patients (mean age 15.3 ± 5.7 years), 23 juvenile idiopathic arthritis, 9 juvenile spondyloarthropathies, 7 connective tissue diseases (mean disease duration and onset respectively 5 ± 3...
October 12, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29016810/mir-30c-5p-regulates-macrophage-mediated-inflammation-and-pro-atherosclerosis-pathways
#14
Giulio Ceolotto, Alessandra Giannella, Mattia Albiero, Maniselvan Kuppusamy, Claudia Radu, Paolo Simioni, Katia Garlaschelli, Andrea Baragetti, Alberico Luigi Catapano, Elisabetta Iori, Gian Paolo Fadini, Angelo Avogaro, Saula Vigili de Kreutzenberg
Aims: Atherosclerosis is an inflammatory disease wherein cholesterol-loaded macrophages play a major role. MicroRNAs and microparticles propagate inflammatory pathways and are involved in cardiovascular disease. We aimed to screen and validate circulating microRNAs correlated with atherosclerosis development in humans, and to dissect the molecular mechanisms associated with atherogenesis using in vitro and in vivo approaches. Methods and results: A panel of 179 secreted microRNAs was screened in plasma samples of patients with and without atherosclerosis, and validated cross-sectionally and prospectively in patients followed for up to 11 years...
November 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29016632/radial-artery-neointimal-hyperplasia-after-transradial-pci-serial-optical-coherence-tomography-volumetric-study
#15
Petr Kala, Jan Kanovsky, Tereza Novakova, Roman Miklik, Otakar Bocek, Martin Poloczek, Petr Jerabek, Lenka Prymkova, Tomas Ondrus, Jiri Jarkovsky, Milan Blaha, Gary S Mintz
AIMS: Transradial catheterization (TRC) is a dominant access site for coronary catheterization and percutaneous coronary interventions (PCI) in many centers. Previous studies reported higher intimal thickness of the radial artery (RA) wall in patients with a previous history of TRC. In this investigation the aim was to assess the intimal changes of RA using the optical coherence tomography (OCT) intravascular imaging in a serial manner. METHODS AND RESULTS: 100 patients with the diagnosis of non-ST-elevation myocardial infarction (nSTEMI) treated by PCI were enrolled (6 patients were excluded from this analysis because of occluded RA at follow-up [2 patients] and insufficient quality of OCT images [4 patients])...
2017: PloS One
https://www.readbyqxmd.com/read/28987961/the-effect-of-genetic-variants-affecting-nk-cell-function-on-cardiovascular-health-and-the-burden-of-cmv
#16
Shelley Waters, Silvia Lee, Jacquita S Affandi, Ashley Irish, Patricia Price
Renal transplant recipients (RTR) display high burdens of cytomegalovirus (CMV) and accelerated cardiovascular change. NK cells can control CMV and may contribute to vascular pathologies. Polymorphisms in genes encoding the inhibitory receptor LILRB1 and its ligand HLA-G, and the activating receptor NKG2C may illuminate the role of NK cells in vascular health and CMV immunity. We assessed 81 healthy adults and 82 RTR >2 years after transplantation. RTR had higher humoral and T-cell responses to CMV, and impaired vascular health...
October 5, 2017: Human Immunology
https://www.readbyqxmd.com/read/28987784/peritoneal-pre-conditioning-reduces-macrophage-marker-expression-in-collagen-containing-engineered-vascular-grafts
#17
Mozhgan Shojaee, Kristin B Wood, Lisa K Moore, Chris A Bashur
Engineered vascular grafts have shown promise as arteriovenous shunts, but they have not yet progressed to clinical trials for coronary arteries <4 mm in diameter such as the coronary arteries. Control over initial biomaterial properties and remodeling are necessary to generate viable grafts. In this study, we blended collagen with a synthetic material, poly(ε-caprolactone), to modulate the post-grafting inflammatory response while avoiding aneurysmal-like dilation and failure that can occur with pure collagen grafts...
December 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28953214/clinical-trials-in-menopause
#18
Kathryn I Marko, James A Simon
OBJECTIVE: Clinical trials in menopause have undergone much scrutiny over the years. This has led to significant shifts in the treatment of symptomatic menopause and a substantial impact on women. We aim to delineate the key studies contributing to this controversy and highlight new directions specifically related to menopausal hormone therapy (HT) and vascular disease risk. METHODS: We performed a search of sentinel studies delineating the risks and benefits of HT in otherwise healthy postmenopausal women...
September 25, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28950870/per-os-colchicine-administration-in-cholesterol-fed-rabbits-triglycerides-lowering-effects-without-affecting-atherosclerosis-progress
#19
Vaios Vasileios Kaminiotis, George Agrogiannis, Panagiotis Konstantopoulos, Vasiliki Androutsopoulou, Laskarina Maria Korou, Ioannis S Vlachos, Ismene A Dontas, Despina Perrea, Dimitrios C Iliopoulos
BACKGROUND: Atherosclerosis is a chronic inflammatory disease that is promoted, among others, by pro-inflammatory cytokines such as IL-1β and IL-18 produced by NLRP 3 inflammasome. Development of atherosclerotic lesions is also affected by leptin. Furthermore, inflammasome's action is interfered with other inflammatory diseases, like diabetes. On the other hand, colchicine is reported to act as anti-inflammatory agent inhibiting inflammasome's action and stabilizing atherosclerotic lesions...
September 26, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28937379/nasal-angiomyolipoma-report-of-two-cases-of-an-extremely-rare-entity
#20
Mohammed Abdul Aleem, Ather Fatima, P Kumudachalam, Ramya Priyadarshini
Nasal angiomyolipoma (AML) are extremely rare tumors and so far <15 cases have been reported in the literature, and this is the first instance that Nasal AML is reported from India. We report two cases of AML arising in the nasal cavity described in 60-year-old male and 50-year-old female patient. Grossly, they were well circumscribed, lobulated masses, and microscopically, they were composed of an intimate mixture of mature fat, smooth muscle cells, and thick-walled varying sized blood vessels. Immunoexpression pattern and histopathology were characteristic...
July 2017: Indian Journal of Pathology & Microbiology
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