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https://www.readbyqxmd.com/read/28344738/adherence-to-exercise-prescription-and-improvements-in-the-clinical-and-vascular-health-of-african-americans
#1
Dianne M Babbitt, Amanda M Perkins, Keith M Diaz, Deborah L Feairheller, Kathleen M Sturgeon, Praveen Veerabhadrappa, Sheara T Williamson, Jan Kretzschmar, Chenyi Ling, Hojun Lee, Heather Grim, Michael D Brown
Improvements in indices of vascular health and endothelial function have been inversely associated with hypertension, a risk factor for cardiovascular disease (e.g., myocardial infarction, stroke, and heart failure), renal failure, and mortality. Aerobic exercise training (AEXT) has been positively associated with improvements in clinical health values, as well as vascular health biomarkers, and endothelial function. The purpose of this study was to evaluate whether measures of exercise adherence were related to clinical outcome measures and indices of vascular health subsequent to a 6-month AEXT intervention in a middle-to-older aged African American cohort...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28343986/the-hemodynamic-signal-as-a-first-order-low-pass-temporal-filter-evidence-and-implications-for-neuroimaging-studies
#2
Antoine Sauvage, Guillaume Hubert, Jonathan Touboul, Jérôme Ribot
Neuronal activation triggers local changes in blood flow and hemoglobin oxygenation. These hemodynamic signals can be recorded through functional magnetic resonance imaging or intrinsic optical imaging, and allows inferring neural activity in response to stimuli. These techniques are widely used to uncover functional brain architectures. However, their accuracy suffers from distortions inherent to hemodynamic responses and noise. The analysis of these signals currently relies on models of impulse hemodynamic responses to brief stimuli...
March 23, 2017: NeuroImage
https://www.readbyqxmd.com/read/28342890/vasodilatory-effect-of-nitroglycerin-in-japanese-subjects-with-different-aldehyde-dehydrogenase-2-aldh2-genotypes
#3
Takeshi Miura, Toru Nishinaka, Tomoyuki Terada, Kazuya Yonezawa
The functional genetic polymorphism of aldehyde dehydrogenase 2 (ALDH2) influences the enzymatic activities of its wild type (Glu504 encoded by ALDH2*1) and mutant type (Lys504 encoded by ALDH2*2) proteins. The enzymatic activities of mutant-type ALDH2 are limited compared with those of the wild type. ALDH2 has been suggested as a critical factor for nitroglycerin-mediated vasodilation by some human studies and in vitro studies. Currently, there is no research on direct observations of the vasodilatory effect of nitroglycerin sublingual tablets, which is the generally used dosage form...
March 23, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28332508/prolactin-as-a-predictor-of-endothelial-dysfunction-and-arterial-stiffness-progression-in-menopause
#4
G Georgiopoulos, I Lambrinoudaki, F Athanasouli, E Armeni, A Koliviras, A Augoulea, D Rizos, C Papamichael, A Protogerou, K Stellos, K Stamatelopoulos
Postmenopausal women are at increased risk for progression of arteriosclerosis and hypertension. Recent cross-sectional evidence suggests that high normal circulating prolactin levels may accelerate vascular ageing in menopause. Postmenopausal women (n=201) were consecutively recruited from a Menopause Clinic and re-evaluated in at least one follow-up visit within the next 3 years. Baseline circulating prolactin levels were measured while both baseline and follow-up vascular and biochemical measurements were performed...
March 23, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28330425/taxane-derived-compounds-protect-sk-n-sh-cells-against-oxidative-stress-injury-induced-by-h2o2
#5
Ruisheng Duan, Xing Xing, Yachao Qi, Nan Yin, Hongyu Hao, Hongshan Chu, Ya Gao, Weiping Wang, Peiyuan Lv
OBJECTIVE: Discussed the protection of taxane-derived compounds, 7-deacetyl-taxine B and 5-cinnamoyloxy-taxin B, against oxidative stress injury. METHODS: SK-N-SH cells were pretreated with 7-deacetyl-taxine B, 5-cinnamoyloxy-taxin B or DMSO (control) and then incubated with H2O2 for another 24 h. Cell viability was measured by MTT colorimetric assay. Apoptosis rate, reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) were detected using flow cytometry assay...
March 22, 2017: Neurological Research
https://www.readbyqxmd.com/read/28325072/aortic-assessment-of-bicuspid-aortic-valve-patients-and-their-first-degree-relatives
#6
Pablo Straneo, Gabriel Parma, Natalia Lluberas, Alvaro Marichal, Gerardo Soca, Leandro Cura, Juan J Paganini, Daniel Brusich, Lucia Florio, Victor Dayan
Background Bicuspid aortic valve patients have an increased risk of aortic dilatation. A deficit of nitric oxide synthase has been proposed as the causative factor. No correlation between flow-mediated dilation and aortic diameter has been performed in patients with bicuspid aortic valves and normal aortic diameters. Being a hereditary disease, we compared echocardiographic features and endothelial function in these patients and their first-degree relatives. Methods Comprehensive physical examinations, routine laboratory tests, transthoracic echocardiography, and measurements of endothelium-dependent and non-dependent flow-mediated vasodilatation were performed in 18 bicuspid aortic valve patients (14 type 1 and 4 type 2) and 19 of their first-degree relatives...
March 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28302709/acute-impact-of-conventional-and-eccentric-cycling-on-platelet-and-vascular-function-in-patients-with-chronic-heart-failure
#7
Andrew Haynes, Matthew D Linden, Lauren C Chasland, Kazunori Nosaka, Andrew J Maiorana, Ellen Adele Dawson, Lawrence Dembo, Louise H Naylor, Daniel J Green
Evidence-based guidelines recommend exercise therapy for patients with chronic heart failure (CHF). Such patients have increased atherothrombotic risk. Exercise can transiently increase platelet activation and reactivity and decrease vascular function in healthy participants, although data in CHF is scant. Eccentric (ECC) cycling is a novel exercise modality which may be particularly suited to patients with CHF, but the acute impacts of ECC on platelet and vascular function are currently unknown. Our null hypothesis was that ECC and concentric (CON) cycling, performed at matched external workloads, would not induce changes in platelet or vascular function in patients with CHF...
March 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28298332/impact-of-lifelong-exercise-training-on-endothelial-ischemia-reperfusion-and-ischemic-preconditioning-in-humans
#8
Martijn F H Maessen, Anke Ccm van Mil, Yaïra Straathof, Niels P Riksen, Gerard A P J M Rongen, Maria T E Hopman, Thijs M H Eijsvogels, Dick H J Thijssen
Reperfusion is essential for ischemic tissue survival, but causes additional damage to the endothelium (i.e. ischemia-reperfusion [IR] injury). Ischemic preconditioning (IPC) refers to short repetitive episodes of ischemia that can protect against IR. However, IPC efficacy attenuates with older age. Whether physical inactivity contributes to the attenuated efficacy of IPC to protect against IR injury in older humans is unclear. We tested the hypotheses that lifelong exercise training relates to 1) attenuated endothelial IR and 2) maintained IPC efficacy that protects veteran athletes against endothelial IR...
March 15, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28289530/consumption-of-energy-beverage-is-associated-with-attenuation-of-arterial-endothelial-flow-mediated-dilatation
#9
John P Higgins, Benjamin Yang, Nikki E Herrin, Santi Yarlagadda, George T Le, Brandon L Ortiz, Asif Ali, Stephen C Infanger
AIM: To investigate whether consumption of an energy drink will acutely impair endothelial function in young healthy adults. METHODS: Energy drinks are being consumed more and more worldwide, and have been associated with some deaths in adolescents and young adults, especially when consumed while exercising. After fasting and not smoking for at least 8 h prior, eleven medical students (9 males) received an electrocardiogram, blood pressure and pulse check, and underwent baseline testing (BL) of endothelial function using the technique of endothelium-dependent flow mediated dilatation (FMD) with high-resolution ultrasound (according to recommended guidelines of the University of Wisconsin Atherosclerosis Imaging Research Program Core Laboratory)...
February 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28288972/interleukin-6-inhibition-and-coronary-artery-disease-in-a-high-risk-population-a-prospective-community-based-clinical-study
#10
Bruno Cesar Bacchiega, Ana Beatriz Bacchiega, Magali Justina Gomez Usnayo, Ricardo Bedirian, Gurkirpal Singh, Geraldo da Rocha Castelar Pinheiro
BACKGROUND: Atherosclerosis is a chronic inflammatory disease, with interleukin 6 (IL-6) as a major player in inflammation cascade. IL-6 blockade may reduce cardiovascular risk, but current treatments to block IL-6 also induce dyslipidemia, a finding with an uncertain prognosis. METHODS AND RESULTS: We aimed to determine the endothelial function responses to the IL-6-blocking agent tocilizumab, anti-tumor necrosis factor α, and synthetic disease-modifying antirheumatic drug therapies in patients with rheumatoid arthritis in a 16-week prospective study...
March 13, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28287891/associations-of-resting-heart-rate-with-endothelium-dependent-vasodilation-and-shear-rate
#11
Jitanan Laosiripisan, Kristin L Parkhurst, Hirofumi Tanaka
Heart rate is an independent risk factor for cardiovascular disease and a hemodynamic factor that can modulate blood flow as it affects the frequency of shear stimuli acting on the arterial wall. However, the association between heart rate and endothelium-dependent vasodilation remains highly controversial. We determined the association between heart rate at rest and endothelium-dependent vasodilation in 98 apparently healthy adults (18-63 years). The mild and positive association between heart rate and flow-mediated dilation (FMD) was no longer significant when age and sex or baseline diameter were controlled for...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28285093/associations-of-central-aortic-pressure-and-brachial-blood-pressure-with-flow-mediated-dilatation-in-apparently-healthy-japanese-men-the-circulatory-risk-in-communities-study-circs
#12
Keyang Liu, Renzhe Cui, Ehab S Eshak, Meishan Cui, Jia-Yi Dong, Masahiko Kiyama, Takeo Okada, Akihiko Kitamura, Mitsumasa Umesawa, Kazumasa Yamagishi, Hironori Imano, Tetsuya Ohira, Hiroyasu Iso
BACKGROUND AND AIMS: Endothelial dysfunction is considered the first stage in the development of atherosclerosis and cardiovascular disease, and brachial flow-mediated dilation (FMD) is a measure of endothelial function. It is uncertain which of central systolic aortic pressure (CAP) or brachial systolic blood pressure (SBP) is more strongly associated with FMD. Therefore, we examined the correlations of CAP and SBP with FMD in Japanese men. METHODS: The study subjects comprised 507 male volunteers aged 30-79 years that were residents in two communities under the Circulatory Risk in Communities Study (CIRCS) between 2013 and 2015...
February 27, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28274927/endothelial-dysfunction-correlates-with-exaggerated-exercise-pressor-response-during-whole-body-maximal-exercise-in-chronic-kidney-disease
#13
Ryan M Downey, Peizhou Liao, Erin C Millson, Arshed A Quyyumi, Salman Sher, Jeanie Park
Chronic kidney disease (CKD) patients have exercise intolerance associated with increased cardiovascular mortality. Previous studies demonstrate that blood pressure (BP) and sympathetic nerve responses to handgrip exercise are exaggerated in CKD. These patients also have decreased nitric oxide (NO) bioavailability and endothelial dysfunction which could potentially lead to an impaired ability to vasodilate during exercise. We hypothesized that CKD patients have exaggerated BP responses during maximal whole body exercise and that endothelial dysfunction correlates with greater exercise pressor responses in these patients...
March 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28272770/sex-differences-in-vascular-dysfunction-and-cardiovascular-outcomes-the-cardiac-endothelial-function-and-arterial-stiffness-in-esrd-ceres-study
#14
Isabella Guajardo, Amrita Ayer, Alexander D Johnson, Peter Ganz, Claire Mills, Catherine Donovan, Rebecca Scherzer, Sanjiv J Shah, Carmen A Peralta, Ruth F Dubin
INTRODUCTION: Recent studies suggest that women with end-stage renal disease (ESRD) may have higher rates of mortality than men, but it is unknown whether sex differences in vascular function explain this disparity. The cardiac, endothelial function, and arterial stiffness in ESRD (CERES) study is an ongoing, prospective observational study designed to investigate vascular function, myocardial injury, and cardiovascular outcomes in ESRD. METHODS: Among 200 CERES participants (34% women), we evaluated arterial wave reflections as augmentation index normalized to a heart rate of 75 (AIx75), arterial stiffness as pulse wave velocity, and macro- and microvascular endothelial dysfunction as flow-mediated dilation and velocity time integral (VTI)...
March 8, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28271589/clustering-of-cardio-metabolic-risk-factors-in-parents-of-adolescents-with-type-1-diabetes-and-microalbuminuria
#15
M Loredana Marcovecchio, Päivi H Tossavainen, Katharine Owen, Catherine Fullah, Paul Benitez-Aguirre, Stefano Masi, Ken Ong, Helen Nguyen, Scott T Chiesa, R Neil Dalton, John Deanfield, David B Dunger
OBJECTIVE: To evaluate the association between a clustering of cardio-metabolic risk factors in parents and the development of microalbuminuria (MA) in their offspring with childhood-onset type 1 diabetes (T1D). METHODS: The study population comprised 53 parents (mean age [±SD]: 56.7±6.2 years) of 35 T1D young people with MA (MA+) and 86 parents (age: 56.1±6.3 years) of 50 matched offspring with normoalbuminuria (MA-), who underwent clinical, biochemical and cardiovascular imaging assessments...
March 8, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28264923/blood-pressure-in-healthy-humans-is-regulated-by-neuronal-no-synthase
#16
Husain Shabeeh, Sitara Khan, Benyu Jiang, Sally Brett, Narbeh Melikian, Barbara Casadei, Philip J Chowienczyk, Ajay M Shah
NO is physiologically generated by endothelial and neuronal NO synthase (nNOS) isoforms. Although nNOS was first identified in brain, it is expressed in other tissues, including perivascular nerves, cardiac and skeletal muscle. Increasing experimental evidence suggests that nNOS has important effects on cardiovascular function, but its composite effects on systemic hemodynamics in humans are unknown. We undertook the first human study to assess the physiological effects of systemic nNOS inhibition on basal hemodynamics...
March 6, 2017: Hypertension
https://www.readbyqxmd.com/read/28264657/-non-alcoholic-fatty-liver-disease-and-enos-dysfunction-in-humans
#17
Marcello Persico, Mario Masarone, Antonio Damato, Mariateresa Ambrosio, Alessandro Federico, Valerio Rosato, Tommaso Bucci, Albino Carrizzo, Carmine Vecchione
BACKGROUND: NAFLD is associated to Insulin Resistance (IR). IR is responsible for Endothelial Dysfunction (ED) through the impairment of eNOS function. Although eNOS derangement has been demonstrated in experimental models, no studies have directly shown that eNOS dysfunction is associated with NAFLD in humans. The aim of this study is to investigate eNOS function in NAFLD patients. METHODS: Fifty-four NAFLD patients were consecutively enrolled. All patients underwent clinical and laboratory evaluation and liver biopsy...
March 7, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28255214/endothelial-progenitor-cells-as-a-marker-of-endothelial-dysfunction-and-atherosclerosis-in-ankylosing-spondylitis-a-cross-sectional-study
#18
Inderjeet Verma, Ashit Syngle, Pawan Krishan, Nidhi Garg
Endothelial progenitor cells (EPCs) have reparative potential in overcoming the endothelial dysfunction and reducing cardiovascular risk. EPC depletion has been demonstrated in the setting of established atherosclerotic diseases. We evaluated whether reduced EPCs population are associated with endothelial dysfunction, subclinical atherosclerosis, and inflammatory markers in ankylosing spondylitis (AS) patients without any known traditional cardiovascular risk factor. We performed a cross-sectional study of 30 consecutive AS patients and 25 age- and sex-matched healthy controls...
March 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28245208/patients-with-obstructive-sleep-apnea-display-decreased-flow-mediated-dilatation-evidence-from-a-meta-analysis
#19
Yuyu Wang, Huajun Xu, Yingjun Qian, Jian Guan, Hongliang Yi, Shankai Yin
BACKGROUND Endothelial dysfunction, which can be measured by flow-mediated dilatation (FMD), is an early clinical marker of atherosclerosis, which is considered to be the main cause of the observed cardiovascular complications in obstructive sleep apnea (OSA) patients. The association between OSA and endothelial dysfunction has been reported in a number of studies; however, the findings are not entirely consistent. Our aim was to meta-analytically synthesize the existing evidence to explore the association between OSA and endothelial dysfunction...
February 28, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28237909/the-relationship-between-smoking-intensity-and-subclinical-cardiovascular-injury-the-multi-ethnic-study-of-atherosclerosis-mesa
#20
Mahmoud Al Rifai, Andrew P DeFillippis, John W McEvoy, Michael E Hall, Ana Navas Acien, Miranda R Jones, Rachel Keith, Hoda S Magid, Carlos J Rodriguez, Graham R Barr, Emelia J Benjamin, Rose Marie Robertson, Aruni Bhatnagar, Michael J Blaha
BACKGROUND AND AIMS: Modern tobacco regulatory science requires an understanding of which biomarkers of cardiovascular injury are most sensitive to cigarette smoking exposure. METHODS: We studied self-reported current smokers from the Multi-Ethnic Study of Atherosclerosis. Smoking intensity was defined by number of cigarettes/day and urinary cotinine levels. Subclinical cardiovascular injury was assessed using markers of inflammation [high-sensitivity C-reactive protein (hsCRP), interleukin 6 & 2 (IL-2 & IL-6), tumor necrosis factor alpha (TNF-α)], thrombosis (fibrinogen, D-dimer, homocysteine), myocardial injury (troponin T; TnT), endothelial damage (albumin: creatinine ratio), and vascular function [aortic & carotid distensibility, flow-mediated dilation (FMD)]...
March 2017: Atherosclerosis
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