Abstract:
:Marijuana is the most abused recreational drug in the United States. Cannabinoids, the active ingredients of marijuana, affect multiple organ systems in the human body. The pharmacologic effects of marijuana, based on stimulation of cannabinoid receptors CB1 and CB2, which are widely distributed in the cardiovascular system, have been well described. Activation of these receptors modulates the function of various cellular elements of the vessel wall, and may contribute to the pathogenesis of atherosclerosis. Clinically, there are reports linking marijuana smoking to the precipitation of angina and acute coronary syndromes. Recently, large published clinical trials with CB1 antagonist rimonabant did not show any significant benefit of this agent in preventing progression of atherosclerosis. In light of these findings and emerging data on multiple pathways linking cannabinoids to atherosclerosis, we discuss the literature on the role of cannabinoids in the pathophysiology of atherosclerosis. We also propose a marijuana paradox, which implies that inhalation of marijuana may be linked to precipitation of acute coronary syndromes, but modulation of the endocannabinoid system by a noninhalation route may have a salutary effect on the development of atherosclerosis.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Singla S,Sachdeva R,Mehta JLdoi
10.1002/clc.21962subject
Has Abstractpub_date
2012-06-01 00:00:00pages
329-35issue
6eissn
0160-9289issn
1932-8737journal_volume
35pub_type
杂志文章,评审abstract:BACKGROUND:Radiation-treated head and neck cancer (HNC) patients are at high risk for developing radiation vasculopathy, as evidenced by an increased stroke risk. The benefits of screening and assessing the cardiovascular (CV) risk of HNC patients using carotid intima-media thickness (CIMT) ultrasound are not known. Ou...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22389
更新日期:2015-05-01 00:00:00
abstract::Paravalvular regurgitation (PVR) remains one of the drawbacks of transcatheter aortic valve implantation (TAVI). Details of percutaneous closure (PCC) of PVR after TAVI remain obscure. We aimed to explore the patient characteristics, procedural details, closure devices used, and outcomes of PCC after TAVI. A systemati...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.22569
更新日期:2016-10-01 00:00:00
abstract::Thirty-eight patients treated by atrial pacing were divided into three groups (Group I, patients with neither coronary stenosis nor anginal pain during pacing; Group II, patients with no coronary stenosis but having anginal pain during pacing; Group III, patients with coronary stenosis). The concentrations of adenosin...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960120203
更新日期:1989-02-01 00:00:00
abstract::Subaortic stenosis has been described with increasing frequency as an ominous feature of atrioventricular septal defect (AVSD), especially following surgical correction of the anomaly in non-Down's syndrome patients. In order to study the surgical anatomy of the left ventricular outflow tract in this malformation, 48 ...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960140611
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:There is increasing evidence that chronic atrial fibrillation (AF) is associated with a prothrombotic or hypercoagulable state. HYPOTHESIS:This study was undertaken to determine whether short-term exercise in patients with chronic AF would shift the overall hemostatic balance toward a more prothrombotic sta...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960240512
更新日期:2001-05-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960160503
更新日期:1993-05-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1002/clc.20885
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:Insulin resistance is clearly associated with coronary artery disease (CAD) in diabetics. Insulin resistance may also be present in normoglycemic individuals, and some of these patients can be diagnosed as having metabolic syndrome (MS) according to various definitions. However, the relationship between hype...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20379
更新日期:2009-01-01 00:00:00
abstract::An unusual case of metastatic disease of the right ventricle is described in a 74-year-old woman who had presented with a malignant fibrous histiocytoma of the right thigh previously treated with surgery and radiotherapy. Two years later she presented with signs and symptoms of tricuspid regurgitation and right ventri...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960140216
更新日期:1991-02-01 00:00:00
abstract::In 10 men with stable exertional angina, the changes in exercise capacity, hemodynamics, and left ventricular (LV) function were measured after 20 mg sublingual nifedipine (N) and again after adding 100 mg oral metoprolol (M). Nifedipine alone did not significantly improve exercise workloads (+18%) and duration (+21%)...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960080405
更新日期:1985-04-01 00:00:00
abstract:BACKGROUND:Left ventricular ejection fraction (LVEF) has shown to predict outcomes in patients with heart failure (HF). Left ventricular recovery (LVR) has shown to improve prognosis. HYPOTHESIS:Guideline-directed medical therapy will predict LVR in patients with HF and reduced LVEF. METHODS:We studied 244 patients w...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22937
更新日期:2018-06-01 00:00:00
abstract::This work attempted to study the segmental wall motion on left ventriculograms, in terms of segmental shortening, velocity of segmental shortening, and temporal sequences of various events in systole as well as in diastole. The ability of such a method to characterize patterns of normal regional wall motion and to det...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960090201
更新日期:1986-02-01 00:00:00
abstract:BACKGROUND:Currently, there is no clear consensus regarding the optimal waiting period before permanent pacemaker implantation in patients with conduction disorders following an inferior myocardial infarction. HYPOTHESIS:We aimed to elucidate the contemporary practice pattern of pacing, especially the timing of pacema...
journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究
doi:10.1002/clc.23210
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Pulmonary capillary wedge pressure (PCWP) is a useful index of preload and an important determinant of cardiac function. HYPOTHESIS:We postulated that the rate of blood propagating into the left atrium (LAIF-PR) would be a useful measure of PCWP in critically ill patients. METHODS:Fifty-two critically ill ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960260412
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND AND HYPOTHESIS:ST-segment depression during acute myocardial infarction (AMI) is known to herald serious hemodynamic complications. Since the mechanism of this dependence is not clear, we reinvestigated the old concept of papillary muscle infarction (PMI) as a cause of marked ST depression. METHODS:Autopsie...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960190514
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:In addition to the well-investigated proinflammatory cytokine expression, there is an ever increasing interest in the field of anti-inflammatory response to cardiopulmonary bypass (CPB). Evidence suggests that myocardium serves as an important source of cytokines during reperfusion and application of CPB. Th...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960290708
更新日期:2006-07-01 00:00:00
abstract::Tissue-type plasminogen activator (t-PA) derived from a melanoma cell line was first used in patients with acute myocardial infarction in the early 1980s. Recombinant DNA technology then allowed production of large amounts of t-PA. The TIMI-I trial used a two-chain recombinant (rt-PA) product. A predominantly single-c...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/clc.4960160404
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:There is limited data on electrocardiographic (ECG) abnormalities and their prognostic significance in women with peripartum cardiomyopathy (PPCM). We sought to characterize ECG findings in PPCM and explore the association of ECG findings with myocardial recovery and clinical outcomes. HYPOTHESIS:We hypothe...
journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究
doi:10.1002/clc.23171
更新日期:2019-05-01 00:00:00
abstract:BACKGROUND:Cibenzoline, a class Ia antiarrhythmic drug, can be used to relieve left ventricular (LV) outflow obstruction in hypertrophic obstructive cardiomyopathy (HOCM). However, the mechanism of this agent in HOCM has been controversial. HYPOTHESIS:This study was designed to investigate the effect of cibenzoline on...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960230911
更新日期:2000-09-01 00:00:00
abstract::Several classifications of antiarrhythmic drugs have appeared and all suffer considerable limitations. Recently a Task Force of the Working Group on Arrhythmias of the European Society of Cardiology proposed a novel classification of antiarrhythmic drugs (the so-called Sicilian Gambit) based on their action on the mos...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960170307
更新日期:1994-03-01 00:00:00
abstract::We report a case of competitive blood flow in the left coronary circulation after saphenous vein bypass grafting that resulted in the apparent progression of a proximal stenosis to total occlusion at coronary angiography. Repeat angiography with careful attention to catheter position and adequate injection of contrast...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960070309
更新日期:1984-03-01 00:00:00
abstract::This report describes the case of a patient who developed postinfarction left ventricular free wall rupture and cardiac tamponade. He was managed conservatively, made a successful recovery, and is alive and asymptomatic 10 months after the index episode. Only 17 cases in which the patients survived subacute rupture of...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960220317
更新日期:1999-03-01 00:00:00
abstract::The importance of a history of angina pectoris on long-term timolol treatment after myocardial infarction was studied with respect to mortality and reinfarction. The analyses were performed retrospectively using cohorts from the Norwegian timolol multicenter study. In patients without angina pectoris prior to the infa...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960080205
更新日期:1985-02-01 00:00:00
abstract:BACKGROUND:Oxidized low-density lipoprotein (oxLDL) not only plays an important role in plaque formation, but also impairs the endothelium-dependent relaxation. Constrictive remodeling rather than intimal hyperplasia mainly contributes to restenosis after balloon angioplasty. Probucol (powerful antioxidant) reduced res...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960260107
更新日期:2003-01-01 00:00:00
abstract::Hyperkalemia was associated with complete heart block in one patient that resolved by first showing right anterior hemiblock). Then the right bundle branch block resolved, leaving the marked left axis deviation that was present before the hyperkalemic episode. Another patient with hyperkalemia had right bundle branch ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960040110
更新日期:1981-01-01 00:00:00
abstract::Left ventricular wall motion abnormalities, aneurysm formation, and progression to global hypokinesis have been described in patients with myocarditis and in patients with hypertrophic cardiomyopathy. We document a case of reversible aneurysm formation, cardiogenic shock, and complete recovery in a patient with myocar...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960160317
更新日期:1993-03-01 00:00:00
abstract::Patients with coronary artery disease have a variety of treatment options available to them. These include medications to control anginal episodes and, when appropriate, revascularization interventions in the form of coronary artery bypass graft and angioplasty. Despite advances in the treatment of angina, a substanti...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960251407
更新日期:2002-12-01 00:00:00
abstract::Several studies have investigated the role of physical fitness in atrial fibrillation (AF), but the results remain controversial. We aimed to estimate the association between physical fitness and risk of AF. We comprehensively retrieved data from the Cochrane Library, PubMed, and Embase databases until February 29, 20...
journal_title:Clinical cardiology
pub_type: 杂志文章,meta分析,评审
doi:10.1002/clc.22552
更新日期:2016-07-01 00:00:00
abstract::We investigated the potential benefit of a preferential pulmonary vasodilatory effect of nifedipine in 4 patients with Eisenmenger syndrome complicating ventricular septal defect. First-pass radionuclide scan was performed at rest to measure intracardiac shunting before and after nifedipine. Two hours after 20 mg subl...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960141205
更新日期:1991-12-01 00:00:00
abstract::The treatment of hypertension continues to be challenging due to the lack of understanding regarding underlying modulators of blood pressure as well as co-existing conditions such as atherosclerosis and diabetes. This has led to uncertainty regarding treatment strategy and intensity. The INternational VErapamil SR/tra...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960241705
更新日期:2001-11-01 00:00:00