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https://www.readbyqxmd.com/read/28207427/progression-and-characterization-of-the-accelerated-atherosclerosis-in-iliac-artery-of-new-zealand-white-rabbits-effect-of-simvastatin
#1
Jitendra S Kanshana, Vivek Khanna, Vishal Singh, Manish Jain, Ankita Misra, Sachin Kumar, Mariya Farooqui, Manoj K Barthwal, Madhu Dikshit
OBJECTIVE: Although atherosclerosis is described in New Zealand White rabbit's iliac artery, yet details of time-dependent atherosclerosis progression are not well known. Further, a well characterized accelerated model of atherosclerosis is also required for the screening of candidate drugs to target specific steps of atherosclerosis development. The present study extensively characterizes the time-dependent plaque composition and functional responses of the atherosclerosis in rabbit iliac artery and its modification by simvastatin...
February 14, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28199358/association-between-carotid-atherosclerosis-and-different-subtypes-of-hypertension-in-adult-populations-a-multiethnic-study-in-xinjiang-china
#2
Yun Wu, Fen Liu, Dilare Adi, Yi-Ning Yang, Xiang Xie, Xiao-Mei Li, Xiang Ma, Zhen-Yan Fu, Ying Huang, Bang-Dang Chen, Chun-Fang Shan, Yi-Tong Ma
BACKGROUND: Ethnic differences in non-invasive measurements of carotid atherosclerosis are being increasingly reported, but the association between carotid atherosclerosis and different subtypes of hypertension in adult populations is not fully understood in different ethnicities. We aimed to investigate the association of carotid atherosclerosis with different subtypes of hypertension in different ethnicities in Xinjiang, a northwestern province in China. METHODS: A total of 14,618 participants (5,757 Hans, 4,767 Uygurs, and 4,094 Kazakhs) from 26 villages of seven cities in Xinjiang were randomly selected from the Cardiovascular Risk Survey conducted during 2007 and 2010...
2017: PloS One
https://www.readbyqxmd.com/read/28196336/regression-of-atherosclerosis-with-apple-procyanidins-by-activating-the-atp-binding-cassette-subfamily-a-member-1-in-a-rabbit-model
#3
Liang Wang, Toshio Fumoto, Saeko Masumoto, Toshihiko Shoji, Tomisato Miura, Masato Naraoka, Naoya Matsuda, Tadaatsu Imaizumi, Hiroki Ohkuma
BACKGROUND AND AIMS: Apple polyphenol contains abundant procyanidins, which have been associated with an anti-atherosclerosis and cholesterol-lowering effect. The aim of this study was to investigate whether apple procyanidins (APCs) feature therapeutic efficacy in terms of regressing atherosclerosis and whether this efficacy is due to mechanisms other than a cholesterol-lowering effect. METHODS: After eight weeks on an atherogenic diet, rabbits were given a normal diet for another eight weeks to normalize the increased serum lipids level...
January 27, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28191713/tissue-characterization-and-phenotype-classification-in-patients-presenting-with-acute-myocardial-infarction-insights-from-the-iwonder-study
#4
Cristiano F Souza, Akiko Maehara, Gary S Mintz, Mitsuaki Matsumura, Claudia M R Alves, Antonio Carlos Carvalho, Adriano Caixeta
OBJECTIVES: We sought to assess a new modality of radiofrequency intravascular ultrasound (IVUS) called iMAP-IVUS (Boston Scientific, Santa Clara, California) during the evaluation of patients presenting with high-risk acute coronary syndromes. BACKGROUND: There are limited data on plaque tissue characterization and phenotype classification using iMAP-IVUS. METHODS: In the iWonder study patients presenting with ST-elevation myocardial infarction (STEMI) or non-STEMI underwent three-vessel grayscale IVUS and iMAP-IVUS tissue characterization prior to percutaneous intervention...
February 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28146147/self-surface-charge-exfoliation-and-electrostatically-coordinated-2d-hetero-layered-hybrids
#5
Min-Quan Yang, Yi-Jun Xu, Wanheng Lu, Kaiyang Zeng, Hai Zhu, Qing-Hua Xu, Ghim Wei Ho
At present, the technological groundwork of atomically thin two-dimensional (2D) hetero-layered structures realized by successive thin film epitaxial growth is in principle constrained by lattice matching prerequisite as well as low yield and expensive production. Here, we artificially coordinate ultrathin 2D hetero-layered metal chalcogenides via a highly scalable self-surface charge exfoliation and electrostatic coupling approach. Specifically, bulk metal chalcogenides are spontaneously exfoliated into ultrathin layers in a surfactant/intercalator-free medium, followed by unconstrained electrostatic coupling with a dissimilar transition metal dichalcogenide, MoSe2, into scalable hetero-layered hybrids...
February 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28123095/nature-s-technical-ceramic-the-avian-eggshell
#6
Eric N Hahn, Vincent R Sherman, Andrei Pissarenko, Samuel D Rohrbach, Daniel J Fernandes, Marc A Meyers
Avian eggshells may break easily when impacted at a localized point; however, they exhibit impressive resistance when subjected to a well-distributed compressive load. For example, a common demonstration of material strength is firmly squeezing a chicken egg along its major axis between one's hands without breaking it. This research provides insight into the underlying mechanics by evaluating both macroscopic and microstructural features. Eggs of different size, varying from quail (30 mm) to ostrich (150 mm), are investigated...
January 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28115116/the-voltage-sensitive-dye-rh421-detects-a-na-k-atpase-conformational-change-at-the-membrane-surface
#7
Alvaro Garcia, Promod R Pratap, Christian Lüpfert, Flemming Cornelius, Denis Jacquemin, Bogdan Lev, Toby W Allen, Ronald J Clarke
RH421 is a voltage-sensitive fluorescent styrylpyridinium dye which has often been used to probe the kinetics of Na(+),K(+)-ATPase partial reactions. The origin of the dye's response has up to now been unclear. Here we show that RH421 responds to phosphorylation of the Na(+),K(+)-ATPase by inorganic phosphate with a fluorescence increase. Analysis of the kinetics of the fluorescence response indicates that the probe is not detecting phosphorylation itself but rather a shift in the protein's E1/E2 conformational equilibrium induced by preferential phosphate binding to and phosphorylation of enzyme in the E2 conformation...
January 20, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28104120/percutaneous-coronary-intervention-and-coronary-artery-bypass-grafting-in-heart-transplant-recipients-with-transplant-coronary-arterial-vasculopathy
#8
K Kuroda, H Sunami, Y Matsumoto, S Nakajima, T Sato, O Seguchi, H Hata, M Yanase, T Fujita, J Kobayashi, N Fukushima
BACKGROUND: Transplant coronary arterial vasculopathy (TCAV) is a major cause of death after heart transplantation (HTx). Palliative coronary revascularization has been attempted in patients with severe TCAV; however, the outcome has not been fully elucidated. METHODS: Ninety-six patients who were treated after HTx at our institute between 1999 and 2015 were screened for TCAV. TCAV was defined as >70% stenosis on coronary angiography (CAG) or a maximal intimal thickness of >0...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28072480/free-fatty-acids-induce-autophagy-and-lox-1-upregulation-in-cultured-aortic-vascular-smooth-muscle-cells
#9
Cheng-I Cheng, Yueh-Hong Lee, Po-Han Chen, Yu-Chun Lin, Ming-Huei Chou, Ying-Hsien Kao
Elevation of free fatty acids (FFAs) is known to affect microvascular function and contribute to obesity-associated insulin resistance, hypertension, and microangiopathy. Proliferative and synthetic vascular smooth muscle cells (VSMCs) increase intimal thickness and destabilize atheromatous plaques. This study aimed to investigate whether saturated palmitic acid (PA) and monounsaturated oleic acid (OA) modulate autophagy activity, cell proliferation, and vascular tissue remodeling in an aortic VSMC cell line...
November 5, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28060941/computed-tomographic-distinction-of-intimal-and-medial-calcification-in-the-intracranial-internal-carotid-artery
#10
Remko Kockelkoren, Annelotte Vos, Wim Van Hecke, Aryan Vink, Ronald L A W Bleys, Daphne Verdoorn, Willem P Th M Mali, Jeroen Hendrikse, Huiberdina L Koek, Pim A de Jong, Jill B De Vis
BACKGROUND: Intracranial internal carotid artery (iICA) calcification is associated with stroke and is often seen as a proxy of atherosclerosis of the intima. However, it was recently shown that these calcifications are predominantly located in the tunica media and internal elastic lamina (medial calcification). Intimal and medial calcifications are thought to have a different pathogenesis and clinical consequences and can only be distinguished through ex vivo histological analysis. Therefore, our aim was to develop CT scoring method to distinguish intimal and medial iICA calcification in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28057247/clinical-implications-of-focal-intimal-disruption-in-patients-with-type%C3%A2-b%C3%A2-intramural-hematoma
#11
Sergio Moral, Hug Cuéllar, Gustavo Avegliano, Esther Ballesteros, Maria Teresa Salcedo, Ignacio Ferreira-González, David García-Dorado, Arturo Evangelista
BACKGROUND: Focal intimal disruption (FID) has been described in >20% of type B intramural hematomas (IMH), with unclear prognosis and management. OBJECTIVES: This study aimed to evaluate the short- and long-term evolution of medically treated patients with type B IMH with and without FID. METHODS: There were 107 consecutive patients with acute type B IMH were included prospectively in a multicenter protocol of clinical and imaging follow-up...
January 3, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28028403/assessment-of-increase-in-aortic-and-carotid-intimal-medial-thickness-in-type-1-diabetic-patients
#12
Soha M Abd El Dayem, Ahmed A Battah, Abo El Magd El Bohy
AIM: To assess aortic and carotid intima-media thickness (aIMT and cIMT) in diabetic patients. PATIENTS AND METHODS: The study included 75 type 1 diabetic patients and 30 age and sex matched healthy volunteer. A blood sample was taken for analysis of HbA1 and lipid profile and the urine sample was taken for analysis of albumin/creatinine ratio. aIMT and cIMT via ultrasound were also done. RESULTS: cIMT & aIMT were significantly higher in diabetics...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28025048/tropoelastin-inhibits-intimal-hyperplasia-of-mouse-bioresorbable-arterial-vascular-grafts
#13
Tadahisa Sugiura, Riddhima Agarwal, Shuhei Tara, Tai Yi, Yong-Ung Lee, Christopher K Breuer, Anthony S Weiss, Toshiharu Shinoka
: Neointimal hyperplasia, which results from the activation, proliferation and migration of vascular smooth muscle cells (SMCs), is a detrimental condition for vascular stents or vascular grafts that leads to stenosis. Preventing neointimal hyperplasia of vascular grafts is critically important for the success of arterial vascular grafts. We hypothesized that tropoelastin seeding onto the luminal surface of the graft would prevent neointimal hyperplasia through suppressing neointimal smooth muscle cell proliferation...
December 23, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27973329/a-novel-constrained-paclitaxel-coated-angioplasty-balloon-catheter
#14
Bodo Cremers, Gary Binyamin, Yvonne P Clever, Paul Seifert, Eitan Konstantino, Bettina Kelsch, Stephanie Bienek, Ulrich Speck, Bruno Scheller
AIMS: The study assessed drug adherence, transfer to the vessel wall, tolerance and efficacy of a constrained angioplasty balloon (Chocolate™) coated with an excipient enhanced paclitaxel coating (CCB) in the porcine model. METHODS AND RESULTS: Drug adherence was investigated in vitro. Drug transfer was evaluated in porcine arteries. A stent overstretch model was chosen to provoke intimal thickening in the efficacy and tolerance study. Conventional uncoated balloons were used as controls...
December 15, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27924992/p-n-depleted-bulk-biobr-%C3%AE-fe2o3-heterojunctions-applied-for-unbiased-solar-water-splitting
#15
Hua-Yan Si, Chen-Jing Mao, Ya-Meng Xie, Xiu-Guo Sun, Jin-Jin Zhao, Na Zhou, Jian-Qiang Wang, Wen-Jie Feng, Yan-Ting Li
P-N depleted bulk BiOBr/α-Fe2O3 heterojunction (DBH) nanostructures with the growth of (001) BiOBr facets were prepared via a simple hydrothermal method. BiOBr possesses an average thickness of around 50 nm and shows preferential exposure of the (001) facets. α-Fe2O3 nanoparticles, with an average diameter of 5 nm, are attached on the surface of BiOBr as 20-50 nm clusters with an intimate contact interface. Such DBH nanostructures show high hydrogen evolution, and 193 mmol g(-1) of H2 is produced with DBH containing 1 wt% Pt, which is 6...
December 20, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27893612/the-influence-of-timing-and-frequency-of-adipose-derived-mesenchymal-stem-cell-therapy-on-immunomodulation-outcomes-after-vascularized-composite-allotransplantation
#16
Jan A Plock, Jonas T Schnider, Riccardo Schweizer, Wensheng Zhang, Wakako Tsuji, Matthias Waldner, Mario G Solari, Kacey G Marra, J Peter Rubin, Vijay S Gorantla
BACKGROUND: Cellular therapies for immunomodulation in vascularized composite allotransplantation (VCA) have gained importance due to their potential for minimization of immunosuppression. Adipose-derived (AD) mesenchymal stem cells (MSCs) especially have shown encouraging potential. We investigated the influence of timing and frequency of AD-MSC treatment on immunologic and graft survival as well as graft vasculopathy outcomes after VCA. METHODS: Lewis rats received full-mismatched Brown Norway rat hindlimb transplants...
January 2017: Transplantation
https://www.readbyqxmd.com/read/27881351/-role-of-can-nfatc3-pathway-in-abdominal-aorta-restenosis-following-ballon-dilatation-in-rats
#17
Xiao-Yun Li, Long-Gen Xiong, De-En Li, Lu-Ning Zhao, Qi Dong
OBJECTIVE: To investegate the role of calcineurin (CaN) and its downstream nuclear factor of activated T-cells (NFATc3) in abdominal aorta restenosis following balloon dilatation in rats. METHODS: SD rats were randomly divided into sham-operated group, balloon group and cyclosporine A (CsA) group. The rats in the latter two groups were subjected to abdominal aorta injury with balloon dilatation, and those in CsA group were treated with CsA at the daily dose of 12...
November 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27812055/carotid-intima-media-thickness-evaluation-by-ultrasound-comparison-amongst-healthy-diabetic-and-hypertensive-pakistani-patients
#18
Waseem Mirza, Mubashir Arain, Arif Ali, Vaqar Bari, Mirza Kazim, Kainat Fatima, Zafar Sajjad, Aziz Jiwani, Nadeem Ahmad
OBJECTIVE: To compare carotid Intima media thickness and atherosclerosis burden amongst healthy, diabetic and hypertensive Pakistani patients. METHODS: A cross-sectional study was carried out at the Department of radiology and family medicine, Aga Khan University Hospital Karachi from April 2014 to July 2015. Bilateral carotid ultrasound was done in 133 healthy adults, 65 hypertensive, 31 type-2 diabetic and 37 hypertensive with type-2 diabetes patients. Normal adults were matched for age and gender...
November 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27808365/apoptosis-proliferation-and-morphology-during-vein-graft-remodeling-in-rabbits
#19
L Wan, S H Dai, S Q Lai, L Q Liu, Q Wang, H Xu, W J Wang, J C Liu
Neo-intima development and atherosclerosis limit the long-term use of vein grafts for revascularization of ischemic tissues. Recently, studies have confirmed that proliferating cell nuclear antigen (PCNA) plays an important role in cell proliferation. Our research confirmed that 28 days after vein transplantation, PCNA expression increases significantly. Using rabbits, rather than rodents, for a more representative model of human vein grafts, we aimed to establish a time course of changes in cell proliferation and apoptosis using morphometric and immunohistochemical analyses, western blot, terminal deoxynucleotidyl transferase dUTP nick end labeling, and transmission electron microscopy (TEM)...
October 5, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27805778/precisely-size-tunable-monodisperse-hairy-plasmonic-nanoparticles-via-amphiphilic-star-like-block-copolymers
#20
Yihuang Chen, Young Jun Yoon, Xinchang Pang, Yanjie He, Jaehan Jung, Chaowei Feng, Guangzhao Zhang, Zhiqun Lin
In situ precision synthesis of monodisperse hairy plasmonic nanoparticles with tailored dimensions and compositions by capitalizing on amphiphilic star-like diblock copolymers as nanoreactors are reported. Such hairy plasmonic nanoparticles comprise uniform noble metal nanoparticles intimately and perpetually capped by hydrophobic polymer chains (i.e., "hairs") with even length. Interestingly, amphiphilic star-like diblock copolymer nanoreactors retain the spherical shape under reaction conditions, and the diameter of the resulting plasmonic nanoparticles and the thickness of polymer chains situated on the surface of the nanoparticle can be readily and precisely tailored...
December 2016: Small
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