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Flow mediated dilation

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https://www.readbyqxmd.com/read/28817706/hiv-infection-antiretroviral-therapy-and-measures-of-endothelial-function-inflammation-metabolism-and-oxidative-stress
#1
Andrew Dysangco, Ziyue Liu, James H Stein, Michael P Dubé, Samir K Gupta
BACKGROUND: HIV-infected patients have an increased risk of cardiovascular disease (CVD). Impaired endothelial function is an early risk factor for CVD in the general population. It is presumed that HIV infection is associated with impaired endothelial function, but results have been inconsistent. OBJECTIVES: Our objectives were to determine the relationships between HIV infection, virologic suppression with antiretroviral therapy (ART), in vivo measures of conduit artery and microvascular endothelial function, and circulating biomarkers of pathways associated with CVD...
2017: PloS One
https://www.readbyqxmd.com/read/28817509/high-intensity-exercise-enhances-conduit-artery-vascular-function-in-older-adults
#2
Erika Iwamoto, Josh M Bock, Darren P Casey
PURPOSE: Modulation of vascular function follows an exercise intensity-dependent pattern in young adults. This study aimed to investigate the potential intensity-dependent effects of an acute bout of exercise on conduit and resistance artery function in healthy older adults. METHODS: Eleven healthy older adults (5 males/6 females, 66±1 years) completed 30 minutes of recumbent cycling at 50-55% (low-intensity) and 75-80% (high-intensity) of their age-predicted maximal heart rate on two separate study visits...
August 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28808694/human-serum-albumin-and-oxidative-stress-in-preeclamptic-women-and-the-mechanism-of-albumin-for-stress-reduction
#3
Hiroyuki Kinoshita, Kazushi Watanabe, Toshiharu Azma, Guo-Gang Feng, Takahiko Akahori, Hisaki Hayashi, Motohiko Sato, Yoshihiro Fujiwara, Akihiko Wakatsuki
AIMS: The present study to address one of the mechanisms in preeclampsia, examined whether levels of oxidative stress, human serum albumin, and endothelial function correlate in pregnant women and whether human serum albumin reduces levels of superoxide produced by NADPH oxidase activation in the human vascular smooth muscle cells. MATERIALS AND METHODS: Pregnant women with (Preeclampsia group, n = 33) and without preeclampsia (Normal group, n = 37) were recruited to determine levels of reactive oxygen species (serum diacron-reactive oxygen metabolite [d-ROM]), and the flow-mediated dilation (FMD)...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28808069/endothelial-function-is-impaired-in-patients-receiving-antihypertensive-drug-treatment-regardless-of-blood-pressure-level-fmd-j-study-flow-mediated-dilation-japan
#4
Tatsuya Maruhashi, Junko Soga, Noritaka Fujimura, Naomi Idei, Shinsuke Mikami, Yumiko Iwamoto, Akimichi Iwamoto, Masato Kajikawa, Takeshi Matsumoto, Nozomu Oda, Shinji Kishimoto, Shogo Matsui, Haruki Hashimoto, Yoshiki Aibara, Farina Binti Mohamad Yusoff, Takayuki Hidaka, Yasuki Kihara, Kazuaki Chayama, Kensuke Noma, Ayumu Nakashima, Chikara Goto, Hirofumi Tomiyama, Bonpei Takase, Takahide Kohro, Toru Suzuki, Tomoko Ishizu, Shinichiro Ueda, Tsutomu Yamazaki, Tomoo Furumoto, Kazuomi Kario, Teruo Inoue, Shinji Koba, Kentaro Watanabe, Yasuhiko Takemoto, Takuzo Hano, Masataka Sata, Yutaka Ishibashi, Koichi Node, Koji Maemura, Yusuke Ohya, Taiji Furukawa, Hiroshi Ito, Hisao Ikeda, Akira Yamashina, Yukihito Higashi
Hypertension is associated with endothelial dysfunction. Blood pressure significantly correlates with endothelial function in antihypertensive drug-naive subjects. The purpose of this study was to determine whether treatment status affects the relationship between blood pressure and endothelial function. We measured flow-mediated vasodilation (FMD) in 2297 subjects, including 1822 antihypertensive drug-naive subjects and 475 treated hypertensive patients. FMD significantly decreased in relation to increase in systolic blood pressure (8...
August 14, 2017: Hypertension
https://www.readbyqxmd.com/read/28806532/the-impact-of-an-acute-oral-phosphate-load-on-endothelium-dependent-and-independent-brachial-artery-vasodilation-in-healthy-males
#5
Brendan M Levac, Michael A Adams, Kyra E Pyke
Serum phosphate levels are associated with cardiovascular morbidity and mortality in the general population and endothelial dysfunction may be mechanistically involved. The purpose of this study was to investigate the effects of acute phosphate supplementation on endothelial-dependent (Flow mediated dilation (FMD)) and -independent (Glyceryl trinitrate (GTN)) vasodilation in young, healthy males. 17 healthy male participants (23±3 years old) were exposed to an oral load of phosphate (PHOS; (liquid supplement containing 1200 mg of phosphorous) and placebo (PLAC) over two experimental days...
August 14, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28804951/allometric-scaling-of-flow-mediated-dilation-is-it-always-helpful
#6
K M McLay, J P Nederveen, J J Koval, D H Paterson, J M Murias
Flow-mediated dilation (FMD) is calculated as the greatest percent change in arterial diameter following an ischaemic challenge. This Traditional %FMD calculation is thought to have statistical bias towards baseline diameter (Dbase ), which is reduced by allometric scaling. This study examined whether allometric scaling FMD influenced the difference between a group of healthy young and older adults compared to the Traditional %FMD, and to determine whether a New (allometric) scaling %FMD improved the ability to obtain individually scaled FMD...
August 13, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28804234/nitric-oxide-link-between-inflammation-and-endothelial-dysfunction-in-rheumatoid-arthritis
#7
Nidhi Garg, Ashit Syngle, Pawan Krishan
Nitric oxide (NO) plays an important role in inflammatory joint disease and endothelial function. Endothelial dysfunction has been attributed to a reduction in NO bioactivity in rheumatoid arthritis (RA). However, the relationship of NO with inflammation and endothelial dysfunction in RA has not yet been investigated. To investigate the relationship of nitrite with inflammation and endothelial dysfunction in RA. Total 28 patients satisfying 2010 Rheumatoid Arthritis Classification Criteria were recruited for the study...
September 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28802571/omega-3-polyunsaturated-fatty-acids-improve-endothelial-function-in-humans-at-risk-for-atherosclerosis-a-review
#8
REVIEW
Kayla R Zehr, Mary K Walker
Epidemiology studies and clinical trials show that omega-3 polyunsaturated fatty acids (n-3 PUFAs) can prevent atherosclerotic morbidity and evidence suggests this may be mediated by improving endothelial dysfunction. Endothelial dysfunction is characterized by reduced vasodilation and a pro-inflammatory, pro-thrombotic state, and is an early pathological event in the development of atherosclerosis. Flow-mediated dilation (FMD), a gold standard for assessing endothelial dysfunction, is a predictor of future cardiovascular events and coronary heart disease risk...
August 9, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28796934/predictors-of-candesartan-s-effect-on-vascular-reactivity-in-patients-with-coronary-artery-disease
#9
So-Ryoung Lee, In-Ho Chae, Hack-Lyoung Kim, Do-Yoon Kang, Sang-Hyun Kim, Hyo-Soo Kim
INTRODUCTION AND AIMS: Endothelial dysfunction and arterial stiffness have a prognostic value on adverse long-term outcomes in coronary artery disease (CAD) patients. We evaluated the efficacy on vascular reactivity of candesartan and analyzed predictors to control the candesartan's effect on vascular reactivity in CAD patients. METHOD: Patients were prospectively enrolled and prescribed candesartan for 6 months. The effect on vascular reactivity was evaluated by the change in flow-mediated dilation (FMD) and pulse wave velocity (PWV)...
August 10, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28794213/brachial-and-cerebrovascular-functions-are-enhanced-in-postmenopausal-women-after-ingestion-of-chocolate-with-a-high-concentration-of-cocoa
#10
Channa E Marsh, Howard H Carter, Kym J Guelfi, Kurt J Smith, Kerryn E Pike, Louise H Naylor, Daniel J Green
Background: Cocoa contains polyphenols that are thought to be beneficial for vascular health.Objective: We assessed the impact of chocolate containing distinct concentrations of cocoa on cerebrovascular function and cognition.Methods: Using a counterbalanced within-subject design, we compared the acute impact of consumption of energy-matched chocolate containing 80%, 35%, and 0% single-origin cacao on vascular endothelial function, cognition, and cerebrovascular function in 12 healthy postmenopausal women (mean ± SD age: 57...
August 9, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28794106/flow-mediated-dilation-and-peripheral-arterial-tonometry-are-disturbed-in-pre-eclampsia-and-reflect-different-aspects-of-endothelial-function
#11
Dominique Mannaerts, Ellen Faes, Inge Goovaerts, Tibor Stoop, Jerome Cornette, Wilfried Jozef Gyselaers, Marc E A Spaanderman, Emeline M Van Craenenbroeck, Yves Jacquemyn
BACKGROUND: Endothelial function and arterial stiffness are known to be altered in pre-eclamptic pregnancies. Previous studies have shown conflicting results regarding the best technique for assessing vascular function in pregnancy. In this study, we made a comprehensive evaluation of in vivo vascular function (including flow-mediated dilatation (FMD), peripheral arterial tonometry (PAT), and arterial stiffness) in pre-eclamptic patients and compared them to normal pregnancies. In addition, we assessed the relation between vascular function and systemic inflammation...
August 9, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28780342/e-selectin-and-sicam-1-biomarkers-of-endothelial-function-predict-recurrence-of-venous-thromboembolism
#12
Olga Dzikowska-Diduch, Justyna Domienik-Karłowicz, Elżbieta Górska, Urszula Demkow, Piotr Pruszczyk, Maciej Kostrubiec
BACKGROUND: Risk factors for atherosclerosis and venous thromboembolism (VTE) overlap and are mostly associated with endothelial dysfunction (ED). We hypothesized that ED is present in patients after the first episode of acute pulmonary embolism (APE) and predicts the risk of VTE recurrence. DESIGN AND METHODS: Patients, at least 6months after the first episode of symptomatic, confirmed APE were included in this case-control study. The exclusion criteria were risk factors for cardiovascular diseases and other conditions associated with endothelial dysfunction...
July 26, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28770654/effects-of-intermittent-pneumatic-compression-on-leg-vascular-function-in-people-with-spinal-cord-injury-a-pilot-study
#13
Daniel P Credeur, Lena M Vana, Edward T Kelley, Lee Stoner, David R Dolbow
Objective The purpose of this pilot study was to determine whether 60 mins of intermittent pneumatic compression therapy (IPC) could acutely increase leg blood flow-induced shear stress and enhance vascular endothelial function in persons with spinal cord injury (SCI). Design Pretest with multiple posttests, within subject randomized control design. Setting University of Southern Mississippi, Spinal Cord Injury Research Program within the School of Kinesiology, recruiting from the local community in Hattiesburg, Jackson, and Gulfport, MS...
August 3, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28760408/relationship-between-serum-inflammatory-markers-and-vascular-function-in-a-cohort-of-adolescents-with-type-1-diabetes
#14
Etienne Sochett, Damien Noone, Michael Grattan, Cameron Slorach, Rahim Moineddin, Yesmino Elia, Farid H Mahmud, David B Dunger, Neil Dalton, David Cherney, James Scholey, Heather Reich, John Deanfield
OBJECTIVE: The contribution of inflammation to endothelial/vascular dysfunction in early Type I Diabetes (T1D) is not well understood. The objective of this study was to examine the interaction between systemic inflammation and vascular function in adolescent's with and without-T1D. METHODS: 51 subjects from our observational cohort of adolescents with T1D (JDRF-CCTN), and 59 healthy controls (HC) were studied. Serum cytokines-chemokines were quantified using Human 41-Plex Array, and vascular function was measured by Flow Mediated Dilatation (FMD), Pulse Wave Velocity (PWV) and Blood Pressure (BP)...
July 28, 2017: Cytokine
https://www.readbyqxmd.com/read/28760353/evaluation-of-endothelial-dysfunction-in-patients-with-nonalcoholic-fatty-liver-disease-association-of-selenoprotein-p-with-carotid-intima-media-thickness-and-endothelium-dependent-vasodilation
#15
Ibrahim Cetindağlı, Muammer Kara, Alpaslan Tanoglu, Veysel Ozalper, Serkan Aribal, Yusuf Hancerli, Mehmet Unal, Onur Ozarı, Serdar Hira, Mustafa Kaplan, Yusuf Yazgan
BACKGROUND: In patients with NAFLD, there is an increased risk of cardiovascular disease (CVD). Selenoprotein P (SelP), a hepatokine, is associated with insulin resistance (IR) and serum SelP was found to be elevated in patients with NAFLD. AIM: This study aimed to determine the risk of CVD in NAFLD patients and the association of serum SelP levels with this NAFLD related CVD risk. METHODS: Ninety-three patients with NAFLD and 37 healthy controls were included in the study...
July 28, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28754435/children-with-type-1-diabetes-have-delayed-flow-mediated-dilation
#16
Sarveshinee Pillay, Jemma Anderson, Jennifer Couper, Oana Maftei, Roger Gent, Alexia Sophie Peña
OBJECTIVES: Children with type 1 diabetes have accelerated atherosclerosis with early endothelial dysfunction as measured by reduced flow-mediated dilation (FMD) at 60 seconds postischemic stress (early FMD). Delayed dilation may also occur in the presence of cardiovascular risk factors and may be a more sensitive marker. No data exist that evaluate FMD beyond 60 seconds (delayed FMD) in children with type 1 diabetes. We aimed to compare early and delayed FMD in children with type 1 diabetes and in healthy children...
July 25, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/28747175/cd133-cells-are-associated-with-adipocytokines-and-endothelial-dysfunction-in-hemodialysis-patients
#17
Abdullah Ozkok, Riza Atas, Suzan Adin Cinar, Akar Yilmaz, Esin Aktas, Gunnur Deniz, Alaattin Yildiz
BACKGROUND: Hemodialysis (HD) patients have increased risk of cardiovascular disease (CVD). Impaired stem cell health and adipocytokine metabolism may play important roles in the complex pathophysiological mechanisms of CVD in this patient population. We aimed to investigate the relationships between CD133+ cell counts, adipocytokines and parameters of endothelial dysfunction and atherosclerosis in HD patients. METHODS: In 58 chronic HD patients (male/female:28/30, mean age:58 ± 14 years), serum levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), leptin, adiponectin and resistin were measured by ELISA...
July 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28745354/soybean-isoflavones-ameliorate-ischemic-cardiomyopathy-by-activating-nrf2-mediated-antioxidant-responses
#18
Yang Li, Haiyan Zhang
Ischemic cardiomyopathy (IC) is the major cause of heart failure. Conventional medicine has been proved ineffective with adverse effects. Soybean presents exciting adjunctive therapies and shows protective benefits for IC. However, the molecular mechanisms remain unclear. Isoflavones are the main bioactive components of soybean and may be protective against heart disease. Isoflavones were extracted by using an acidic-ethanol method and analyzed by HPLC. All patients with ischemic stroke were randomly and evenly assigned to two groups: the isoflavone group (80 mg day(-1), n = 100) and control group (80 mg day(-1) placebo, n = 100), and the whole period of the experiment was 24 weeks...
August 1, 2017: Food & Function
https://www.readbyqxmd.com/read/28735679/soluble-endoglin-as-a-prognostic-factor-of-the-claudication-distance-improvement-in-patients-with-peripheral-artery-disease-undergoing-supervised-treadmill-training-program
#19
Rafał Januszek, Piotr Mika, Roman Nowobilski, Witold Nowak, Anna Kusienicka, Damian Klóska, Paweł Maga, Rafał Niżankowski
Conservative therapy after complete revascularization is increasing in popularity in patients with peripheral artery disease (PAD). The aim of the present study was to find determinants of the improvement of walking abilities and endothelial function in patients with PAD undergoing supervised treadmill training program (STTP). The presented study enclosed 66 patients in the mean age 65.4 ± 7.7 years with PAD who underwent a 3-month length STTP. We assessed the effect of following factors on the change of the flow-mediated dilatation value (ΔFMD), maximal walking time (ΔMWT), and pain-free walking time (ΔPFWT)...
June 28, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28724057/impaired-flow-mediated-dilation-response-and-carotid-intima-media-thickness-in-patients-with-type-1-diabetes-mellitus-with-a-mean-disease-duration-of-4-1-years
#20
Lúcia Helena Bonalume Tacito, Antonio Carlos Pires, Juan Carlos Yugar-Toledo
Objective: This study aimed at assessing the endothelial function in patients with Type 1 diabetes (T1DM) using flow-mediated dilation (FMD) response and carotid artery intima-media thickness (CIMT). Materials and methods: This study enrolled 32 T1DM patients (mean disease duration 4.1 years) and 28 age-matched controls (CTL Group). Endothelial function and CIMT were assessed with high-resolution ultrasound using standardized offline measurements. Results: FMD was significantly lower in patients in the T1DM Group (8...
July 13, 2017: Archives of Endocrinology and Metabolism
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