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https://www.readbyqxmd.com/read/28227224/cfd-analysis-of-strut-influence-on-blood-flow-in-stent-implanted-left-main-coronary-artery-bifurcation
#1
Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Takahiro Tsukahara, Yuya Yamada, Yusuke Fujino, Masahiro Motosuke
We numerically studied blood flows in a simulated branching pipe of coronary artery bifurcation, which is affected by stent implantation. We found that stent struts provide effects as guide vanes and blockages on the flow into circumflex branch. The former effect increases the flow rate and shear stress on the arteriosclerosis-prone site. The blockage effect may overwhelm the guide effect depending on a strut position against the inflow.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226997/development-of-an-earlobe-crease-identification-system-to-support-diagnosis-of-arteriosclerosis
#2
Harutoyo Hirano, Ryosuke Katsumata, Masato Futagawa, Toshio Tsuji, Shinji Kishimoto, Nozomu Oda, Masato Kajikawa, Tatsuya Maruhashi, Yukihito Higashi, Harutoyo Hirano, Ryosuke Katsumata, Masato Futagawa, Toshio Tsuji, Shinji Kishimoto, Nozomu Oda, Masato Kajikawa, Tatsuya Maruhashi, Yukihito Higashi, Tatsuya Maruhashi, Toshio Tsuji, Shinji Kishimoto, Masato Kajikawa, Ryosuke Katsumata, Yukihito Higashi, Masato Futagawa, Harutoyo Hirano, Nozomu Oda
It is well known that an earlobe crease (ELC) is related with cardiovascular disease. However evaluation of ELC has been carried out subjectively. We propose a novel system for objective and quantitative evaluation of ELC characteristics. The outline of earlobe was detected using the Canny edge detector. The number of ELCs and the ratio of the ELC length for the lobule from photographs of bilateral earlobes were calculated from the extracted outline of earlobes. Our system's validity for ELCs detection was compared with doctors' diagnosis using sensitivity and specificity analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28217013/contributions-to-the-study-of-blood-brain-flux-using-radioactive-tracers
#3
Ioan Mureşan, Ioan Cosma
In this paper, we present an original radiocirculographic method for investigates of cerebral blood flow, which has proven to be very useful, simple, and efficient for studies of brain hemodynamics. Physical considerations on injected radioactive tracer in cardiovascular system, allowed us to state a relationship for the blood flux, F, valued as the amount of fluid-blood that traverses a vascular segment in unit time. All these theoretical facts, along with a host of remarkable clinical results, are presented in a doctoral thesis entitled "The cerebral Hemodynamics in Essential Hypertension and Arteriosclerosis" of the eminent doctor Ioan Mures,an, who died in 1984, at only 50 years old...
January 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28203023/-randomized-controlled-trial-to-superficial-femoral-artery-recanalization-for-lower-extremity-arteriosclerosis-obliterans
#4
J M Zhuang, X Li, T R Li, J Zhao, J Y Luan, C M Wang
OBJECTIVE: To evaluate the safety and effectiveness of neglecting superficial femoral artery (SFA) recanalization for chronic lower extremity arteriosclerosis obliterans (ASO). METHODS: Thirty-six cases treated for severe stenosis or occlusion of superficial femoral artery resulted from ASO were randomly divided into 2 groups. Twenty of them were treated by endovascular reconstruction of superficial femoral artery and the other 16 cases were not treated with their superficial femoral artery, but were only treated with the accompanied iliac and/or profunda femoral artery lesion...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202829/-treatment-strategy-and-results-of-carotid-endarterectomy-in-chronic-renal-failure-patients
#5
Takeo Murahashi, Kenji Kamiyama, Toshiaki Osato, Toshiichi Watanabe, Tatsuya Ogino, Hironori Sugio, Hideki Endo, Kazuki Takahira, Koichiro Shindo, Shuhei Takahashi, Hirohiko Nakamura
INTRODUCTION: The number of patients receiving chronic dialysis treatment in Japan currently exceeds 300,000 people. Few reports have described carotid endarterectomy(CEA)for chronic renal failure patients because of the unacceptable rate of perioperative stroke and other morbidities. A strategy for and treatment results of CEA for chronic renal failure patients in our hospital are described herein. METHODS: The present study included 6 patients who underwent CEA while receiving dialysis treatment between April 2011 and November 2014...
February 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28202749/endothelial-cell-oligodendrocyte-interactions-in-small-vessel-disease-and-aging
#6
REVIEW
Rikesh M Rajani, Anna Williams
Cerebral small vessel disease (SVD) is a prevalent, neurological disease that significantly increases the risk of stroke and dementia. The main pathological changes are vascular, in the form of lipohyalinosis and arteriosclerosis, and in the white matter (WM), in the form of WM lesions. Despite this, it is unclear to what extent the key cell types involved-the endothelial cells (ECs) of the vasculature and the oligodendrocytes of the WM-interact. Here, we describe the work that has so far been carried out suggesting an interaction between ECs and oligodendrocytes in SVD...
March 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28185675/-consensus-document-on-the-management-of-the-atherogenic-dyslipidaemia-of-the-spanish-society-of-arteriosclerosis
#7
Juan F Ascaso, Jesús Millán, Antonio Hernández-Mijares, Mariano Blasco, Ángel Brea, Ángel Díaz, Teresa Mantilla, Juan Pedro-Botet, Xavier Pintó
Positioning document and summary of recommendations recently published by the Working Group on Atherogenic Dyslipemia of the Spanish Society of Arteriosclerosis and by the European Society of Arteriosclerosis.
February 6, 2017: Clínica e Investigación en Arteriosclerosis
https://www.readbyqxmd.com/read/28177092/-newer-anti-diabetic-therapies-and-chronic-kidney-disease
#8
Luca Di Lullo, Claudio Ronco, Vincenzo Barbera, Mario Cozzolino, Francesca Santoboni, Annalisa Villani, Antonio De Pascalis, Antonio Bellasi
Worldwide, an estimated 200 million people have chronic kidney disease (CKD), whose most common causes include hypertension, arteriosclerosis, and diabetes. About 40% of patients with diabetes develop CKD. Intensive blood glucose control through pharmacological intervention can delay CKD progression. Standard therapies for the treatment of type 2 diabetes include metformin, sulfonylureas, meglitinides, thiazolidinediones and insulin. While these drugs have an important role in the management of type 2 diabetes, only the thiazolidinedione pioglitazone can be used across the spectrum of CKD (stages 25) and without dose adjustment...
January 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28163269/successful-endovascular-treatment-of-aortoiliac-bifurcation-stenosis-using-an-empirically-based-t-and-protrude-stenting-with-self-and-balloon-expandable-stents
#9
Ken-Ichiro Sasaki, Hidetoshi Chibana, Takafumi Ueno, Naoki Itaya, Masahiro Sasaki, Yoshihiro Fukumoto
A 73-year-old woman with arteriosclerosis obliterans (ASO) was underwent a crossover stenting for an aortoiliac bifurcation from the right common iliac artery (CIA) with a self-expandable bare-metal stent (SE-BMS); however, a new stenosis later occurred just behind the bifurcation of the left CIA. An ex vivo experiment demonstrated that culotte-stenting by additional implantation of a balloon-expandable bare-metal stent (BE-BMS) through stent struts of the SE-BMS would be empirically infeasible. Although we had initially planned a T-stenting for the additional implantation of a BE-BMS in the left CIA, we finally deployed the stent in the CIA with the proximal end protruding into the previously-implanted SE-BMS through the stent struts to avoid incomplete coverage of the stenosis by reference to the ex vivo experiments...
February 6, 2017: Kurume Medical Journal
https://www.readbyqxmd.com/read/28155616/crosstalk-between-oxidative-and-nitrosative-stress-and-arterial-stiffness
#10
Ioana Mozos, Constantin Tudor Luca
Arterial stiffness, the expression of reduced arterial elasticity, is an effective predictor of cardiovascular disorders. Oxidative stress is an imbalance between exposure to toxic reactive oxygen species (ROS) and antioxidant systems. The increase in reactive nitrogen species (RNS) is termed nitrosative stress. We review the main mechanisms and products linking arterial stiffness with oxidative and nitrosative stress in several disorders, focusing on recent experimental and clinical data, and the mechanisms explaining benefits of antioxidant therapy...
February 1, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28146208/intima-media-thickness-in-the-carotid-and-femoral-arteries-for-detection-of-arteriosclerosis-in-human-immunodeficiency-virus-positive-individuals
#11
Emmanuelle Tenório Albuquerque Madruga Godoi, Carlos Teixeira Brandt, Heloisa Ramos Lacerda, Jocelene Tenório Albuquerque Madruga Godoi, Dinaldo Cavalcanti de Oliveira, Gabriela Farias Araujo Sousa Costa, Gerson Gomes Dos Santos Junior, Kaliene Maria Estevão Leite, Juannicelle Tenório Albuquerque Madruga Godoi, Adriana Ferraz de Vasconcelos
BACKGROUND: The prevalence of atherosclerosis is higher in HIV-positive people, who also experience it earlier than the general population. OBJECTIVES: To assess and compare the prevalence of atherosclerosis evaluated by the intima-media thickness of carotid and femoral arteries, and by the ankle-brachial pressure index (ABPI) in HIV patients treated or not treated with protease inhibitors (PIs) and controls. METHODS: Eighty HIV+ subjects (40 using PIs and 40 not using PIs) and 65 controls were included in the study...
January 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28144581/tourniquets-do-not-increase-the-total-blood-loss-or-re-amputation-risk-in-transtibial-amputations
#12
Christian Wied, Peter T Tengberg, Gitte Holm, Thomas Kallemose, Nicolai B Foss, Anders Troelsen, Morten T Kristensen
AIM: To investigate the total blood loss (TBL) and the safety with respect to the re-amputation rate after transtibial amputation (TTA) conducted with and without a tourniquet. METHODS: The study was a single-centre retrospective cohort study of patients with a primary TTA admitted between January 2013 and April 2015. All patients with a primary TTA were assessed for inclusion if the amputation was performed because of arteriosclerosis or diabetic complications...
January 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28135700/the-association-between-polymorphism-of-card8-rs2043211-and-susceptibility-to-arteriosclerosis-obliterans-in-chinese-han-male-population
#13
Kun Zhang, Wei Song, Dalin Li, Jingqiang Yan, Yunhui Chen, Haoshan Qi, Xing Jin, Juncheng Zhao
BACKGROUND AND AIMS: Cholesterol crystals have been shown to cause inflammation. As a response to cholesterol crystal accumulation, the NLRP3 inflammasome is activated to produce IL-1β which eventually leads to atherosclerotic lesions. As a part of innate immunity, CARD8 is involved in the modulation of above mentioned inflammatory activities. The primary objective of this study was to investigate the association between polymorphism of CARD8 rs2043211 and susceptibility to arteriosclerosis obliterans (ASO) in Chinese Han male population...
January 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28115412/commonalities-between-vasculature-and-bone-an-osseocentric-view-of-arteriosclerosis
#14
Dwight A Towler
No abstract text is available yet for this article.
January 24, 2017: Circulation
https://www.readbyqxmd.com/read/28114196/early-gains-in-renal-function-following-implantation-of-heartmate-ii-left-ventricular-assist-devices-may-not-persist-to-one-year
#15
Tal Hasin, Avishay Grupper, John J Dillon, Joseph J Maleszewski, Zhuo Li, Yan Topilsky, Robert P Frantz, Brooks S Edwards, Naveen L Pereira, Simon Maltais, John M Stulak, Lyle Joyce, Richard Daly, Soon J Park, Sudhir S Kushwaha
Renal function improves early after left ventricular assist device (LVAD) implantation but later decline has been observed. We sought to determine the occurrence and evaluate possible causes for this decline. In 62 consecutive patients with HeartMateII LVAD with available calculated glomerular filtration rate (GFR, ml/min/1.73m) one year after implant, GFR was assessed repeatedly and possible predictors for decline from 3 to 12 months were investigated. Post-mortem renal specimens for patients supported with an LVAD were evaluated...
January 19, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28108160/exposure-to-endosulfan-increases-endothelial-permeability-by-transcellular-and-paracellular-pathways-in-relation-to-cardiovascular-diseases
#16
Dan Xu, Tong Liu, Limei Lin, Shuai Li, Xiaoming Hang, Yeqing Sun
Exposure to environmental pollutants results in out-of-balance of vascular homeostasis. Endothelial dysfunction leads to a disruption of the endothelial permeability characteristics, associated with cardiovascular diseases. We previously reported that endosulfan could cause endothelial dysfunction, but the role of endosulfan in permeability of endothelial cells has been unexplored. To elucidate molecular mechanism of endosulfan-induced changes in endothelial permeability, human umbilical vein endothelial cells (HUVECs) were exposed to endosulfan, followed by endothelial permeability analysis...
April 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28108129/cardiovascular-impact-in-patients-undergoing-maintenance-hemodialysis-clinical-management-considerations
#17
REVIEW
Srisakul Chirakarnjanakorn, Sankar D Navaneethan, Gary S Francis, W H Wilson Tang
Patients undergoing maintenance hemodialysis develop both structural and functional cardiovascular abnormalities. Despite improvement of dialysis technology, cardiovascular mortality of this population remains high. The pathophysiological mechanisms of these changes are complex and not well understood. It has been postulated that several non-traditional, uremic-related risk factors, especially the long-term uremic state, which may affect the cardiovascular system. There are many cardiovascular changes that occur in chronic kidney disease including left ventricular hypertrophy, myocardial fibrosis, microvascular disease, accelerated atherosclerosis and arteriosclerosis...
January 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28100919/preventive-effect-of-eucommia-leaf-extract-on-aortic-media-hypertrophy-in-wistar-kyoto-rats-fed-a-high-fat-diet
#18
Shingo Hosoo, Masahiro Koyama, Akira Watanabe, Ryuya Ishida, Tetsuya Hirata, Yasuyo Yamaguchi, Hiroo Yamasaki, Keiji Wada, Yukihito Higashi, Kozo Nakamura
Eucommia ulmoides Oliver leaf extract (ELE) has been shown to have anti-hypertensive and anti-obesity effects in rats that are fed a high-fat diet (HFD). To explore the effects of chronic administration of ELE on body weight, blood pressure and aortic media thickness, 7-week-old male Wistar-Kyoto (WKY) rats were orally administered a normal diet, a 30% HFD, or a 5% ELE plus HFD ad libitum for 10 weeks. The HFD treatment caused mild obesity and hypertension in the normotensive rats, while rats receiving both ELE and the HFD had significantly lower body weights, less visceral and perirenal fat, lower blood pressure and thinner aortic media than the control rats receiving the HFD only...
January 19, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28099511/extracellular-fluid-intracellular-fluid-volume-ratio-as-a-novel-risk-indicator-for-all-cause-mortality-and-cardiovascular-disease-in-hemodialysis-patients
#19
Eun-Jung Kim, Myung-Jin Choi, Jeoung-Hwan Lee, Ji-Eun Oh, Jang-Won Seo, Young-Ki Lee, Jong-Woo Yoon, Hyung-Jik Kim, Jung-Woo Noh, Ja-Ryong Koo
BACKGROUND: In hemodialysis patients, fluid overload and malnutrition are accompanied by extracellular fluid (ECF) expansion and intracellular fluid (ICF) depletion, respectively. We investigated the relationship between ECF/ICF ratio (as an integrated marker reflecting both fluid overload and malnutrition) and survival and cardiovascular disease (CVD) in the context of malnutrition-inflammation-arteriosclerosis (MIA) complex. METHODS: Seventy-seven patients from a single hemodialysis unit were prospectively enrolled...
2017: PloS One
https://www.readbyqxmd.com/read/28089458/impact-of-interaction-of-diabetes-mellitus-and-impaired-renal-function-on-prognosis-and-the-incidence-of-acute-kidney-injury-in-patients-undergoing-transcatheter-aortic-valve-replacement-tavr
#20
Dimitry Schewel, Milad Zavareh, Jury Schewel, Thomas Thielsen, Tobias Schmidt, Ulrich Schäfer, Karl-Heinz Kuck, Christian Frerker
BACKGROUND: In high-risk patients with severe aortic stenosis undergoing transcatheter aortic valve replacement (TAVR) diabetes mellitus (DM) is a common comorbidity. It is known to increase the risk of arteriosclerosis and adversely affect morbidity, mortality for all types of cardiovascular disease, and post-procedural outcome after percutaneous and surgical procedures. Moreover, DM is known to facilitate the genesis of renal failure (RF). Pre-existing RF seems to increase the rate of acute kidney injury (AKI), which is a powerful short- and midterm predictor of mortality in patients undergoing TAVR...
April 1, 2017: International Journal of Cardiology
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