Search results for "ATHEROSCLEROSIS"
showing 10 items of 499 documents
Advances in detection and characterization of atherosclerosis using contrast agents targeting the macrophage
2006
With advances in imaging technology and our understanding of the role of inflammation in atherosclerosis, the macrophage appears to be an excellent target for imaging the progression of disease. In addition to imaging the macrophage with only 1 modality, contrast agents can be created that can be imaged with multiple modalities. This seems extremely attractive, as lesion morphology and characteristics can be determined with modalities that provide high picture resolution, such as CT or MRI, whereas macrophage quantity can be accurately determined through the creation of a radiolabeled contrast agent such as FDG via PET. Although this combination of imaging technologies may yield clinically …
Coronary plaque imaging with multislice computed tomography: technique and clinical applications.
2006
The composition of an atherosclerotic lesion, rather than solely the degree of stenosis, is considered to be an important determinant of acute coronary events. Whereas until recently only invasive techniques have been able to provide clues about plaque composition with consistent reproducibility, several recent studies have revealed the potential of multislice computed tomography (MSCT) for noninvasive plaque imaging. Coronary MSCT has the potential to detect coronary plaques and to characterize their composition based on the X-ray attenuating features of each structure. MSCT may also reveal the total plaque burden (calcified and noncalcified components) for individual patients with coronar…
Protrhombotic Effects of Contraceptives
2010
The use of oral contraceptives first became widespread some 40 years ago, and reports of an excess risk of cardiovascular disease among women who used these agents soon followed. Few drugs have been the object of such intensive epidemiological research, the outcome of which has provided clinicians with detailed information about risks not only of specific thrombotic diseases but also important non-contraceptive benefits from the pill. Recently, oral contraceptives have been classified by some according to "generation" (first, second, third, and most recently, fourth generation): first-generation formulations containing lynestrenol or norethindrone, second-generation formulations containing …
Constitutive androstane receptor activation stimulates faecal bile acid excretion and reverse cholesterol transport in mice.
2010
The constitutive androstane receptor (CAR) is a nuclear receptor expressed in the liver and involved in xenobiotic metabolism. The aim of this study was to assess whether pharmacological CAR activation could affect neutral sterol and bile acid elimination under conditions of cholesterol overload.Wild type, Car-/-, ApoE-/-, and low-density lipoprotein receptor (Ldlr)-/- mice fed a western-type diet were treated with the CAR agonist TCPOBOP.CAR activation was associated with a decrease in faecal cholesterol output related to the repression of the Abcg5/g8 cholesterol transporters. In contrast, TCPOBOP treatment induced a marked increase (up to three fold, p0.01) in the elimination of faecal b…
POLYPHENOLS FROM RED WINE MODULATE IMMUNE RESPONSIVENESS: BIOLOGICAL AND CLINICAL SIGNIFICANCE.
2008
Many studies have been conducted on the effects of red wine polyphenols on certain diseases, primarily, coronary heart disease (CHD) and, in this respect, evidence has been demonstrated that intake of red wine is associated with a reduction of CHD symptomatology. In this framework, the purpose of this review is to illustrate the effects of polyphenols on immune cells from human healthy peripheral blood. Data will show that polyphenols are able to stimulate both innate and adaptive immune responses. In particular, the release of cytokines such as interleukin (IL)-12, interferon (IFN)-gamma, and IL-10 as well as immunoglobulins may be important for host protection in different immune related …
European guidelines on chronic mesenteric ischaemia - joint United European Gastroenterology, European Association for Gastroenterology, Endoscopy an…
2020
Chronic mesenteric ischaemia is a severe and incapacitating disease, causing complaints of post-prandial pain, fear of eating and weight loss. Even though chronic mesenteric ischaemia may progress to acute mesenteric ischaemia, chronic mesenteric ischaemia remains an underappreciated and undertreated disease entity. Probable explanations are the lack of knowledge and awareness among physicians and the lack of a gold standard diagnostic test. The underappreciation of this disease results in diagnostic delays, underdiagnosis and undertreating of patients with chronic mesenteric ischaemia, potentially resulting in fatal acute mesenteric ischaemia. This guideline provides a comprehensive overvi…
Effect of Bariatric Surgery on Intima Media Thickness: A Systematic Review and Meta-Analysis
2022
Background: Obesity, and in particular extreme obesity, as a global health problem is an important risk factor for many diseases, including atherosclerotic cardiovascular disease (ACVD). Bariatric surgery might stop or slow atherogenesis by decreasing excessive weight in the early stages of atherogenesis, by suppressing low-grade systemic inflammation as well as by inhibiting oxidative stress and endothelial dysfunction. The aim of this meta-analysis was to provide an answer to whether bariatric surgery has a significant effect on intima-media thickness (IMT) which is a surrogate marker of early atherosclerosis and has a good correlation with atherosclerotic coronary heart disease. Methods:…
Atherosclerosis: risk assessment and the role of aiming for optimal glycaemic control in young patients with type 1 diabetes
2023
Wprowadzenie: Dzieci z cukrzycą typu 1 (type 1 diabetes mellitus – DM1) mają w porównaniu ze zdrowymi rówieśnikami podwyższone ryzyko rozwoju zaawansowanej miażdżycy oraz choroby sercowo-naczyniowej (cardiovascular disease – CVD), a niedostateczna kontrola glikemii jest najważniejszym modyfikowalnym czynnikiem ryzyka CVD w DM1. Aktualne metody oceny kontroli glikemii to ocena hemoglobiny glikowanej (HbA1c), samokontrola glikemii za pomocą glukometru (SMBG), a także stosowanie systemów ciągłego monitorowania glukozy (CGM). Do pośredniej oceny ryzyka rozwoju CVD mogą służyć badania rozszerzenia tętnicy w odpowiedzi na niedokrwienie (flow-mediated dilatation – FMD) i prędkości fali tętna (PWV)…
Czy należy rutynowo wykonywać endoskopię górnego odcinka przewodu pokarmowego przed naczyniowymi zabiegami rekonstrukcyjnymi?
2001
Badaniu poddano dwie grupy chorych z niedokrwieniem kończyn kwalifikowanych do leczenia rekonstrukcyjnego. W grupie pierwszej (300 chorych) u wszystkich pacjentów wykonano rutynową przedoperacyjną endoskopię górnego odcinka przewodu pokarmowego. W grupie drugiej (300 chorych) badanie endoskopowe wykonywano u chorych objawowych. Nadżerki lub też owrzodzenia w żołądku lub dwunastnicy stwierdzono u 81 chorych (27%) z grupy pierwszej — w 56 przypadkach bez jakichkolwiek klinicznych objawów choroby. U chorych niepoddanych badaniu endoskopowemu w okresie pooperacyjnym u 8 wystąpiło krwawienie z przewodu pokarmowego powodowane czynnym owrzodzeniem trawiennym. Dodatkowo u 4 chorych zmarłych z innyc…
An update on the relationships between rheumatoid arthritis and atherosclerosis
2010
Rheumatoid arthritis is a chronic inflammatory disease. Cardiovascular events are the most important cause of mortality and morbidity in patients with rheumatoid arthritis. Beyond the traditional cardiovascular risk factors, chronic systemic inflammation has been shown to be a crucial factor in atherosclerosis development and progression from endothelial dysfunction to plaque rupture and thrombosis. Many studies have shown that atherosclerosis is not a passive event like accumulation of lipids in the vessel walls; by contrast, it represents an active inflammation of the vessels. Inflammatory cells such as macrophages, monocytes and T cells play important roles in the development of both rhe…