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PAD AND blood pressure

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https://www.readbyqxmd.com/read/29156107/hemodynamic-force-triggers-rapid-netosis-within-sterile-thrombotic-occlusions
#1
X Yu, J Tan, S L Diamond
BACKGROUND: Neutrophil extracellular traps (NETs) are released when neutrophils encounter infectious pathogens, especially during sepsis. Additionally, NETosis occurs during venous and arterial thrombosis, disseminated intravascular coagulation, and trauma. OBJECTIVE: We tested if hemodynamic forces trigger NETosis during sterile thrombosis. METHODS: NETs were imaged with Sytox-green during microfluidic perfusion of Factor XIIa-inhibited or thrombin-inhibited human whole blood over fibrillar collagen (± tissue factor)...
November 20, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29131007/proteinase-activated-receptor-2-sensitivity-of-amplified-trpa1-activity-in-skeletal-muscle-afferent-nerves-and-exercise-pressor-reflex-in-rats-with-femoral-artery-occlusion
#2
Jihong Xing, Jianhua Li
BACKGROUND/AIMS: Limb ischemia occurs in peripheral artery disease (PAD). Sympathetic nerve activity (SNA) that regulates blood flow directed to the ischemic limb is exaggerated during exercise in this disease, and transient receptor potential channel A1 (TRPA1) in thin-fiber muscle afferents contributes to the amplified sympathetic response. The purpose of the present study was to determine the role of proteinase-activated receptor-2 (PAR2) in regulating abnormal TRPA1 function and the TRPA1-mediated sympathetic component of the exercise pressor reflex...
November 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29124943/simultaneous-inter-arm-and-inter-leg-systolic-blood-pressure-differences-to-diagnose-peripheral-artery-disease-a-diagnostic-accuracy-study
#3
Ángel Herráiz-Adillo, Alba Soriano-Cano, José Alberto Martínez-Hortelano, Miriam Garrido-Miguel, Julián Ángel Mariana-Herráiz, Vicente Martínez-Vizcaíno, Blanca Notario-Pacheco
PURPOSE: Inter-arm systolic blood pressure differences (IASBPD) and inter-leg systolic blood pressure differences (ILSBPD) have arisen as potential tools to detect peripheral artery disease (PAD) and individuals at high cardiovascular risk. This study aims to evaluate the diagnostic accuracy of IASBPD and ILSBPD to detect PAD, and whether IASBPD or ILSBPD improves diagnostic accuracy of the oscillometric ankle-brachial index (ABI). MATERIALS AND METHODS: In this prospective study, eligible for inclusion were consecutive adults, with at least one of the following cardiovascular risk factors: diabetes, dyslipidemia, hypertension, smoking habit or age ≥65...
November 10, 2017: Blood Pressure
https://www.readbyqxmd.com/read/29073236/prevalence-of-peripheral-artery-disease-pad-and-factors-associated-an-epidemiological-analysis-from-the-population-based-screening-pre-diabetes-and-type-2-diabetes-spredia-2-study
#4
V Cornejo Del Río, J Mostaza, C Lahoz, V Sánchez-Arroyo, C Sabín, S López, P Patrón, P Fernández-García, B Fernández-Puntero, D Vicent, L Montesano-Sánchez, F García-Iglesias, T González-Alegre, E Estirado, F Laguna, C de Burgos-Lunar, P Gómez-Campelo, J C Abanades-Herranz, J M de Miguel-Yanes, M A Salinero-Fort
AIM: To describe the prevalence of Peripheral Artery Disease (PAD) in a random population sample and to evaluate its relationship with Mediterranean diet and with other potential cardiovascular risk factors such as serum uric acid and pulse pressure in individuals ranged 45 to 74 years. METHODS: Cross-sectional analysis of 1568 subjects (mean age 6.5 years, 43% males), randomly selected from the population. A fasting blood sample was obtained to determine glucose, lipids, and HbA1C levels...
2017: PloS One
https://www.readbyqxmd.com/read/29054973/chronic-femoral-artery-ligation-exaggerates-the-pressor-and-sympathetic-nerve-responses-during-dynamic-skeletal-muscle-stretch-in-decerebrate-rats
#5
Evan A Kempf, Korynne S Rollins, Tyler D Hopkins, Alec L Butenas, Joseph M Santin, Joshua R Smith, Steven W Copp
Mechanical and metabolic signals arising during skeletal muscle contraction reflexly increase sympathetic nerve activity and blood pressure (i.e., the exercise pressor reflex). In a rat model of simulated peripheral artery disease (PAD) in which a femoral artery is chronically (~72 hours) ligated, the mechanically-sensitive component of the exercise pressor reflex during 1 Hz dynamic contraction is exaggerated compared to that found in normal rats. Whether this is due to an enhanced acute sensitization of mechanoreceptors by metabolites produced during contraction or involves a chronic sensitization of mechanoreceptors is unknown...
October 20, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28986360/exaggerated-cardiovascular-responses-to-treadmill-running-in-rats-with-peripheral-arterial-insufficiency
#6
J Matthew Kuczmarski, Kellee Unrath, Gail D Thomas
Patients with atherosclerotic peripheral artery disease (PAD) have an augmented pressor response to treadmill walking, but the underlying mechanisms remain poorly understood and difficult to isolate due to the confounding presence of numerous cardiovascular risk factors. In this study, we tested the hypothesis that a chronic deficit in muscle blood flow capacity would be sufficient to trigger an exaggerated pressor response to dynamic exercise. Sprague Dawley rats (5 male, 5 female) were instrumented with radiotelemetery devices in order to measure the cardiovascular responses to treadmill running before and after bilateral femoral artery ligation, which has been shown previously to reduce the blood flow capacity of the distal hindlimb muscles by >60%...
October 6, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28984399/characterization-of-a-novel-capsaicin-heat-ongoing-pain-model
#7
R C Price, W Gandhi, C Nadeau, R Tarnavskiy, A Qu, E Fahey, L Stone, P Schweinhardt
BACKGROUND: Human experimental pain models provide an important translational link between pre-clinical models and clinical pain. Using topical capsaicin and continuous heat application, the novel capsaicin/heat ongoing pain (CHOP) model induces long-lasting experimental pain of which the perceived intensity can be individually adjusted. METHODS: In the CHOP model, capsaicin or control cream is applied to a 10 × 10 cm skin area and a heating pad is applied over the area after cream removal...
October 6, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28935419/red-near-infrared-light-stimulates-release-of-an-endothelium-dependent-vasodilator-and-rescues-vascular-dysfunction-in-a-diabetes-model
#8
Agnes Keszler, Brian Lindemer, Dorothee Weihrauch, Deron Jones, Neil Hogg, Nicole L Lohr
Peripheral artery disease (PAD) is a morbid condition whereby ischemic peripheral muscle causes pain and tissue breakdown. Interestingly, PAD risk factors, e.g. diabetes mellitus, cause endothelial dysfunction secondary to decreased nitric oxide (NO) levels, which could explain treatment failures. Previously, we demonstrated 670nm light (R/NIR) increased NO from nitrosyl-heme stores, therefore we hypothesized R/NIR can stimulate vasodilation in healthy and diabetic blood vessels. Vasodilation was tested by ex vivo pressure myography in wild type C57Bl/6, endothelial nitric oxide synthase (eNOS) knockout, and db/db mice (10mW/cm(2) for 5min with 10min dark period)...
September 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28930746/early-assessment-of-the-risk-factors-for-diabetic-retinopathy-can-reduce-the-risk-of-peripheral-arterial-and-cardiovascular-diseases-in-type-2-diabetes
#9
Juan Tang, Tao Li, Pinhong Li, Yuefei Ma, Momo Liu, Qiaoyun Shan, Fengqi Guo, Ting Zhou, Qianping Wei
BACKGROUNDS: There is still a lack of consensus about how to assess the risk of peripheral arterial disease (PAD) and cardiovascular disease (CVD) in patients with diabetic retinopathy (DR). AIMS: We investigated the risk factors for DR and their association with PAD and CVD in patients with type 2 diabetes (T2D). METHODS: A total of 1,421 patients diagnosed with T2D participated in this study. DR stages were classified as non-DR, nonproliferative DR (NPDR), or proliferative DR (PDR)...
September 21, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28923990/twenty-year-predictors-of-peripheral-arterial-disease-compared-with-coronary-heart-disease-in-the-scottish-heart-health-extended-cohort-shhec
#10
Hugh Tunstall-Pedoe, Sanne A E Peters, Mark Woodward, Allan D Struthers, Jill J F Belch
BACKGROUND: Coronary heart disease and peripheral arterial disease (PAD) affect different vascular territories. Supplementing baseline findings with assays from stored serum, we compared their 20-year predictors. METHODS AND RESULTS: We randomly recruited 15 737 disease-free men and women aged 30 to 75 years across Scotland between 1984 and 1995 and followed them through 2009 for death and hospital diagnoses. Of these, 3098 developed coronary heart disease (19...
September 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28893061/factors-affecting-the-validity-of-the-oscillometric-ankle-brachial-index-to-detect-peripheral-arterial-disease
#11
Ángel Herráiz-Adillo, Iván Cavero-Redondo, Celia Álvarez-Bueno, Vicente Martínez-Vizcaíno, Diana P Pozuelo-Carrascosa, Blanca Notario-Pacheco
BACKGROUND: The use of oscillometric ankle brachial index (ABI) to diagnose peripheral arterial disease (PAD) has raised concern, especially due to a lack of agreement and sensitivity. This study aimed to evaluate those factors affecting the validity of oscillometric ABI in comparison to Doppler ABI to detect PAD. METHODS: Through univariate and multivariate linear regression, we studied those factors affecting the differences between oscillometric and Doppler ABI; through univariate and multivariate logistic regression we analyzed the false negative rate of oscillometric ABI to detect PAD...
September 8, 2017: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/28819005/blood-pressure-and-leg-deoxygenation-are-exaggerated-during-treadmill-walking-in-patients-with-peripheral-artery-disease
#12
Amanda J Miller, J Carter Luck, Danielle Jin-Kwang Kim, Urs A Leuenberger, David N Proctor, Lawrence I Sinoway, Matthew D Muller
The purpose of this study was to investigate blood pressure (BP) and leg skeletal muscle oxygen saturation (SmO2) during treadmill walking in patients with peripheral artery disease (PAD) and healthy subjects. Eight PAD patients (66 ± 3 years, 1 female) and eight healthy subjects (65 ± 2 years, 1 female) walked on a treadmill at 2 miles/hour. The incline increased by 2% every 2 minutes from 0% to 15% or until maximal discomfort. BP was measured every 2 min with an auscultatory cuff. Heart rate (HR) was recorded continuously with an electrocardiogram...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28746520/relationship-between-cardiometabolic-parameters-and-elevated-resting-and-effort-heart-rate-in-schoolchildren
#13
Cristiane Fernanda da Silva, Miria Suzana Burgos, Priscila Tatiana da Silva, Leandro Tibiriçá Burgos, Letícia Welser, Ana Paula Sehn, Jorge André Horta, Elza Daniel de Mello, Cézane Priscila Reuter
Background: Little has been studied on heart rate and its relationship with metabolic disorders. Objective: To identify possible association between heart rate (HR) and metabolic disorders in children and adolescents. Methods: This cross-sectional study evaluated 2.098 subjects, aged between 7 and 17 years. The variables evaluated were: HR, systolic (SBP) and diastolic blood pressure (DBP), pulse pressure (PP), double-product (DP), myocardial oxygen consumption (mVO2), lipids, glucose and uric acid levels, body mass index (BMI) and waist circumference (WC)...
September 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28715234/is-cardiovascular-disease-in-patients-with-diabetes-associated-with-serum-levels-of-mmp-2-lox-and-the-elastin-degradation-products-elm-and-elm-2
#14
Simone Andrea Rørdam Preil, Anne-Sofie Faarvang Thorsen, Anne Lindegaard Christiansen, Mikael Kjær Poulsen, Morten Asser Karsdal, Diana Julie Leeming, Lars Melholt Rasmussen
BACKGROUND: Diabetes mellitus type 2 (T2DM) is a significant risk factor for the development of cardiovascular diseases (CVDs). In a previous microarray study of internal mammary arteries from patients with and without T2DM, we observed several elastin-related genes with altered mRNA-expression in diabetic patients, namely matrix metalloproteinase 2 (MMP-2), lysyl oxidase (LOX) and elastin itself. In this study we investigate whether the serum concentrations of elastin-related proteins correlate to signs of CVD in patients with T2DM...
July 17, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28684012/-high-blood-pressure-during-the-autonomic-crises-in-children-in-intensive-care-unit-etiologic-circumstances-and-modality-therapeutic
#15
D D Batouche, M Benatta, R Okbani, N F Benatta
The dysautonomic (DC) or neurovegetative crisis remains an imperfectly known entity; it associates in a paroxysmal manner a reaction of sympathetic hyperreactivity that can lead to the prognosis. Our objective is to specify the etiological circumstances (DC) and their modality of treatment in pediatric intensive care unit. MATERIALS-METHODS: Descriptive study on files of children admitted in the intensive care unit of 2010-2015 who presented a DC acquired during their hospitalization...
June 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28679623/high-but-not-low-exercise-volume-shifts-the-balance-of-renin-angiotensin-system-toward-ace2-mas-receptor-axis-in-skeletal-muscle-in-obese-rats
#16
Eliete Dalla Corte Frantz, Isabele Gomes Giori, Marcus Vinícius Machado, D'Angelo Carlo Magliano, Fernanda Marques Freitas, Mariana Sodré Boêta Andrade, Aline Bomfim Vieira, Antonio Claudio Lucas Nóbrega, Eduardo Tibiriçá
Metabolic syndrome is a cluster of metabolic risk factors that is linked to central obesity, elevated blood pressure, insulin resistance (IR), and dyslipidemia, where the renin-angiotensin system (RAS) may provide a link among them. This study aimed to evaluate volume exercise effects comparing low vs. high volume of chronic aerobic exercise on RAS axes in skeletal muscle in a diet-induced obesity (DIO) rat model. For this, male Wistar-Kyoto rats were fed a standard chow (SC) diet or a high-fat (HF) diet for 32 wk...
October 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28607554/lower-extremity-peripheral-arterial-disease-is-an-independent-predictor-of-coronary-heart-disease-and-stroke-risks-in-patients-with-type-2-diabetes-mellitus-in-china
#17
Xiao-Hong Pang, Jue Han, Wan-Lan Ye, Xue Sun, Yue Ding, Wen-Juan Huang, Yi-Ming Zhao, Han-Yu Lou, Li-Zhen Shan, Ying-Xiu Kang, Xiao-Xiao Song, Song-Zhao Zhang, Wei Gu, Peng-Fei Shan
We aimed to determine the relationship between lower extremity peripheral arterial disease (PAD), 10-year coronary heart disease (CHD), and stroke risks in patients with type 2 diabetes (T2DM) using the UKPDS risk engine. We enrolled 1178 hospitalized T2DM patients. The patients were divided into a lower extremity PAD group (ankle-brachial index ≤ 0.9 or >1.4; 88 patients, 7.5%) and a non-PAD group (ankle-brachial index > 0.9 and ≤1.4; 1090 patients, 92.5%). Age; duration of diabetes; systolic blood pressure; the hypertension rate; the use of hypertension drugs, ACEI /ARB, statins; CHD risk; fatal CHD risk; stroke risk; and fatal stroke risk were significantly higher in the PAD group than in the non-PAD group (P < 0...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28593118/ideal-cardiovascular-health-and-peripheral-artery-disease-in-african-americans-results-from-the-jackson-heart-study
#18
Tracie C Collins, David P Slovut, Robert Newton, William D Johnson, Sandra Larrivee, Jeremy Patterson, Judy A Johnston, Adolfo Correa
We sought to determine the association of Life's Simple Seven (LSS) with peripheral artery disease (PAD) in African Americans. We performed a cross-sectional analysis of baseline data (2000-2004) from subjects participating in the Jackson Heart Study. African American men and women (N = 4403) age 35-84 years participated in the study. PAD was defined by an ankle-brachial index (ABI) of < 0.9. We assessed frequency of LSS (body mass index [BMI], blood pressure, total cholesterol, glucose, dietary habits, physical activity, and smoking) among participants with and without PAD...
September 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28591174/the-acute-effects-of-lower-limb-intermittent-negative-pressure-on-foot-macro-and-microcirculation-in-patients-with-peripheral-arterial-disease
#19
Øyvind Heiberg Sundby, Lars Øivind Høiseth, Iacob Mathiesen, Harald Weedon-Fekjær, Jon O Sundhagen, Jonny Hisdal
BACKGROUND: Intermittent negative pressure (INP) applied to the lower leg and foot increases foot perfusion in healthy volunteers. The aim of the present study was to describe the effects of INP to the lower leg and foot on foot macro- and microcirculation in patients with lower extremity peripheral arterial disease (PAD). METHODS: In this experimental study, we analyzed foot circulation during INP in 20 patients [median (range): 75 (63-84yrs)] with PAD. One leg was placed inside an air-tight vacuum chamber connected to an INP-generator...
2017: PloS One
https://www.readbyqxmd.com/read/28575088/effect-of-blood-pressure-lowering-medications-on-leg-ischemia-in-peripheral-artery-disease-patients-a-meta-analysis-of-randomised-controlled-trials
#20
Diana Thomas Manapurathe, Smriti Murali Krishna, Brittany Dewdney, Joseph Vaughan Moxon, Erik Biros, Jonathan Golledge
BACKGROUND: It has been suggested that anti-hypertensive medications may worsen leg ischemia in peripheral artery disease (PAD) patients. We undertook a meta-analysis to assess the effect of anti-hypertensive medications on measures of leg ischemia including maximum walking distance (MWD), pain free walking distance (PFWD) and ankle brachial pressure index (ABPI). A meta-regression was performed to evaluate whether the effect of the anti-hypertensive medications on mean arterial pressure (MAP) was associated with changes in ABPI, MWD or PFWD...
2017: PloS One
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