Search results for "arteriosclerosi"
showing 10 items of 131 documents
Hemostatic Alterations in Peripheral Arteriopathies
1985
The most common cause of obliterative disease in limb arteries is slowly progressive arteriosclerosis which is eventually superimposed by thrombosis.
Possible protective role for C-reactive protein in atherogenesis: complement activation by modified lipoproteins halts before detrimental terminal se…
2004
Background—Previous work indicated that enzymatically remodeled LDL (E-LDL) might activate complement in atherosclerotic lesions via a C-reactive protein (CRP)–dependent and CRP-independent pathway. We sought to substantiate this contention and determine whether both pathways drive the sequence to completion.Methods and Results—E-LDL was prepared by sequential treatment of LDL with a protease and cholesteryl esterase. Trypsin, proteinase K, cathepsin H, or plasmin was used with similar results. Functional tests were used to assess total complement hemolytic activity, and immunoassays were used to demonstrate C3 cleavage and to quantify C3a, C4a, C5a, and C5b-9. E-LDL preparations activated …
RELATIONSHIP BETWEEN SERUM URIC ACID AND AORTIC STIFFNESS IN UNTREATED HYPERTENSIVE SUBJECTS
2013
Recent studies have reported an association between serum uric acid (SUA) and reduced arterial elasticity. However, in these studies arterial elastic properties have been assessed chiefly by measuring brachial-ankle pulse wave velocity (PWV) or peripheral PWV and only sometimes by using aortic PWV. Moreover, the relationships between SUA and arterial stiffness have never been statistically adjusted for albuminuria. Furthermore, the studies exploring the influence of uric acid on aortic distensibility in subjects with arterial hypertension yielded conflicting results. The aim of our study was to evaluate the relationships between SUA and aortic stiffness in a group of essential hypertensive …
ASSOCIATION OF RENAL RESISTIVE INDEX WITH AORTIC PULSE WAVE VELOCITY IN HYPERTENSIVE PATIENTS.
2013
The assessment of renal hemodynamic parameters by duplex Doppler sonography has been used for many years as a diagnostic tool in the daily work-up of kidney diseases. Recent data suggest that these parameters, especially the intrarenal resistive index (RI) may be also associated with systemic vascular changes and with an enhanced cardiovascular risk. However, conflicting data exist in literature about the independent association of aortic stiffness with RI. The aim of this study was to evaluate the relationship between RI and arterial stiffness, assessed by aortic pulse wave velocity (PWV), in the hypertensive subjects consecutively attending our hypertension centre. We enrolled 264 subject…
PLASMA ENDOTHELIN-1 IS ASSOCIATED WITH AORTIC STIFFNESS IN ESSENTIAL HYPERTENSION
2011
Background: Experimental studies documented that endothelin-1 (ET-1) contributes to arterial stiffness and recently, in patients with chronic kidney diseases, it has been observed that selective endothelin-A receptor antagonism reduces arterial stiffness, in part independently of blood pressure lowering. Little is known about the relationships between ET-1 plasma levels and aortic distensibility in subjects with essential hypertension. Objective: The aim of our study was to analyse the relationships between plasma concentrations of ET-1 and carotid-femoral pulse wave velocity (c-f PWV), as an index of aortic stiffness, in a group of hypertensive patients without overt renal insufficiency [e…
EARLY VASCULAR AGING IN NORMOTENSIVE SUBJECTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS. COMPARISON WITH YOUNG HYPERTENSIVE PATIENTS
2015
Introduction: It is well known that connective tissue diseases, like Systemic Lupus Erythematosus, are associated with early and accelerated atherosclerosis. During the last year, it has well established the concept of ‘‘Early vascular aging’’ (EVA), whose the aortic stiffness represents one of the most important markers. Aim: To evaluate early vascular aging, assessed by measuring Aortic pulse wave velocity (aPWV), as an arterial stiffness index, in a group of normotensive patients with SLE and to compare these subjects with a group of young essential hypertensive (EH) individuals.Methods: In this cross-sectional study we have enrolled 50 normotensive SLE subjects (45 women and 5 men) with…
Estudio de marcadores de inflamación en ayuno y situación postprandial en la hipercolesterolemia primaria
2017
La aterosclerosis es el resultado de un proceso inflamatorio crónico de la pared arterial en cuya patogénesis intervienen numerosas células y mediadores histoquímicos que inician, perpetúan y complican la placa de ateroma. La inflamación está presente en todo el proceso aterosclerótico, iniciándose con la secreción de moléculas de adhesión y quimiotaxis leucocitarias en respuesta a diferentes estímulos. Por otra parte, la lipemia postprandial podría constituir un factor de riesgo para la enfermedad cardiovascular. Sus mecanismos aterogénicos podrían ser a través de efectos directos mediados por lipoproteínas o bien induciendo la secreción de citoquinas proinflamatorias relacionadas con el d…
Práctica 2. Valoración clínico-funcional en afecciones cardíacas
2011
La exploración clínico-funcional aporta las claves para el diagnóstico de las afecciones cardíacas. Si bien la Anamnesis es el procedimiento diagnóstico primario, se precisan exploraciones complementarias para realizar un correcto diagnóstico diferencial. En este sentido, son necesarios los tres elementos de la exploración física cardiovascular (inspección, palpación y auscultación) y pruebas complementarias como: el registro electrocardiográfico, la toma de la tensión arterial, la radiografía de tórax, el estudio ecocardiográfico, el cateterismo cardíaco, etc. L’exploració clínico-funcional aporta les claus per al diagnòstic de les afeccions cardíaques. A més de l’Anamnesi o procediment di…
Práctica 4. Exploración clínica arterial
2011
La exploración clínico-funcional aporta las claves para el diagnóstico de la patología vascular periférica. La Anamnesis detallada y la exploración física completa constituyen los pilares básicos en su detección. A esto se le deben sumar exploraciones complementarias que permitirán establecer el diagnóstico definitivo, así como la localización exacta de la lesión. L’exploració clínico-funcional aporta les claus per al diagnòstic de la patologia vascular perifèrica. L’Anamnesi detallada i l’exploració física completa constitueixen els pilars bàsics en la seua detecció. A més, cal afegir exploracions complementàries que perpetran establir el diagnòstic definitiu, així com la localització exac…
Enzymatically modified, nonoxidized LDL induces selective adhesion and transmigration of monocytes and T-lymphocytes through human endothelial cell m…
1999
Abstract —Circulating monocytes and T lymphocytes extravasate through the endothelium at sites of developing atheromatous lesions, where they tend to accumulate and mediate the progression of the disease. We have previously demonstrated the presence of an enzymatically degraded, nonoxidized form of LDL (E-LDL) in early human fatty streaks, which possesses major biological properties of an atherogenic lipoprotein. The effects of E-LDL on human endothelial cells have now been studied with respect to adhesion and transmigration of monocytes and T lymphocytes. E-LDL induced a rapid and dose-dependent selective adhesion of monocytes and T lymphocytes to endothelial cell monolayers within 30 min…