PubMed · 6001271
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A L Mikhnev, V G Zhdanenko, V A Pilipenko. 1966. [On rheumatic coronaritis].. https://pubmed.ncbi.nlm.nih.gov/6001271/
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Clinical data show that a 1% increase in serum concentrations of high-density lipoprotein cholesterol (HDL-C) can decrease cardiovascular risk by 2% to 3%. Therefore, mechanisms affecting the level and functionality of high-density lipoprotein (HDL) and its constituents are being investigated as targets for the rational development of drugs to prevent or treat cardiovascular disease. High-density lipoprotein-related research may also increase our understanding of the link between atherosclerosis and metabolic disorders. This report and update of the HDL Working Group discusses HDL metabolism and reverse cholesterol transport, impaired HDL as a marker and a cause of proatherogenic states, and experimental and current approaches to HDL-related therapy.
BACKGROUND: The CAPRIE study showed the superiority of clopidogrel over acetylsalicylic acid (ASA) for reducing the combined risk of major atherothrombotic events in patients with recent myocardial infarction (MI), recent ischaemic stroke (IS) or established peripheral arterial disease. The benefit of clopidogrel over ASA is amplified in high-risk patients. Proof of concept for the benefit of clopidogrel in addition to ASA in patients with coronary manifestations of atherothrombosis was provided by the CURE trial. METHODS: MATCH is a randomized, double-blind, placebo-controlled trial that compares clopidogrel and ASA versus clopidogrel alone in high-risk patients with recently symptomatic cerebrovascular disease. Eligible patients have experienced a transient ischaemic attack (TIA) or IS within the last 3 months and have evidence of at least 1 additional risk factor within the last 3 years (prior IS, MI, stable or unstable angina pectoris, diabetes or symptomatic peripheral arterial disease). Patients were randomized to receive ASA 75 mg once daily or placebo, with both groups receiving clopidogrel 75 mg once daily as part of standard therapy. The primary end point is the composite of IS, MI, vascular death and rehospitalization for an acute ischaemic event. The duration of treatment and follow-up is 18 months for each patient. RESULTS: Enrollment was completed in April 2002, with 7,599 patients randomized to receive the study medication. The mean age at randomization was 66 years, and the qualifying event was IS in 78.9% of patients and TIA in 21.1%. The baseline features of the study cohort indicate a population that is at a high risk for atherothrombotic recurrence. CONCLUSION: MATCH is a major ongoing trial that will provide important data on the benefit of clopidogrel and ASA compared with clopidogrel alone for reduction of vascular ischaemic events in patients with recent TIA or IS who are at high risk of atherothrombotic event recurrence.
The factor VII activating protease (FSAP) is a serine-protease present in human plasma that serves to activate single-chain plasminogen activators, as well as coagulation factor VII. FSAP was localized within atherosclerotic lesions, and a genetic polymorphism in FSAP is associated with carotid stenosis. Hence, this study was conducted to gain broader insights into the cellular effects of FSAP on vascular smooth muscle cells (VSMC). DNA synthesis and cell proliferation assays revealed an inhibitory action of FSAP on platelet-derived growth factor BB (PDGF-BB)-mediated proliferation of VSMC. FSAP also inhibited PDGF-BB-induced migration of VSMC. These cellular effects of FSAP could be neutralized by an anti-FSAP mAb as well as by protease inhibitors such as aprotinin or a chloromethylketone inhibitor. Moreover, unfractionated heparin promoted the antiproliferative effect of FSAP on VSMC and was essential for the inhibition of VSMC migration. FSAP inhibited PDGF-BB binding to human VSMC and concomitantly blocked PDGF-BB-dependent phosphorylation of mitogen activated protein kinase p42/p44 and tyrosine phosphorylation of other proteins. These results unravel a new function of FSAP as an inhibitor of the proatherogenic phenotype of vascular smooth muscle.