Search results for "REDUCTASE"
showing 10 items of 798 documents
Rational for statin use in psoriatic patients
2013
Psoriasis represents a common skin disease which is clinically manifested by chronic cutaneous lesions. It has been observed that psoriasis is associated with an increased risk of cardiovascular diseases, which is contributed to the inappropriate lipid metabolism. Statins are commonly used in clinical practice to lower cholesterol concentration and, accordingly, decrease the individual risk of developing a cardiovascular episode. There have been reports that statin administration could also result in better management of psoriasis. The observed beneficial effects are contributed to the effects on lipid metabolism, including that in skin, as well as anti-inflammatory and immunomodulatory pro…
High-Sensitivity C-Reactive Protein and Statin Initiation
2014
The assessment of cardiovascular risk and treatment of cardiovascular diseases are major public health issues worldwide. Inflammation is now recognized as a key regulatory process that links multiple risk factors for atherosclerosis. The substantial number of patients having cardiovascular events lack commonly established risk factors. The utility of high-sensitivity C-reactive protein (hsCRP), a circulating biomarker related to inflammation, may provide additional information in risk prediction. This review will consider the impact of hsCRP level on initiation of statin therapy.
A systematic review and meta-analysis of the effect of statins on plasma asymmetric dimethylarginine concentrations.
2015
AbstractThe impact of statin therapy on plasma asymmetric dimethylarginine (ADMA) levels has not been conclusively studied. Therefore the aim of the meta-analysis was to assess the effect of statins on circulating ADMA levels. We searched selected databases (up to August 2014) to identify randomized controlled trials (RCTs) that investigate the effect of statins on plasma ADMA concentrations. A weighted meta-regression (WMD) using unrestricted maximum likelihood model was performed to assess the impact of statin dose, duration of statin therapy and baseline ADMA concentrations as potential variables on the WMD between statin and placebo group. In total, 1134 participants in 9 selected RCTs …
A meta-analysis of the role of statins on renal outcomes in patients with chronic kidney disease. Is the duration of therapy important?
2013
article i nfo Introduction: The efficacy of statin treatment in chronic kidney disease (CKD) patients remains controversial. Therefore, we performed a meta-analysis to investigate whether statins modulate renal function in patients with CKD. Methods: Data from Scopus, PubMed, Web of Science, and the Cochrane Central Register of randomized controlled trials for years 1966-December 2012 were searched for appropriate studies. Results: Twenty trials with 6452 CKD subjects randomized to receive either statin or placebo were included. Statin therapy significantly influenced high sensitivity C-reactive protein levels in patients on or off dialysis (−0.28 mg/dl, 95%CI: −0.93 to −0.37; p b 0.05 and …
Increased susceptibility to lipid peroxidation in skeletal muscles of dystrophic hamsters.
1989
The results showed that the total content of lipids, which could be peroxidized with Fe(2 +)/ascorbate stimulation in vitro, was 45.4% and 53.7% higher than normal in the dystrophic hamster muscle at the age of 1 and 3 months, respectively. Correspondingly, the susceptibility to lipid peroxidation (stimulated by ADP-chelated iron at 37 degrees C) was 38.6-74.3% higher in dystrophic muscles. The increases were not related to necrotic lesions and inflammation observed. The activities of glucose-6-phosphate dehydrogenase, glutathione reductase, thioredoxin reductase and catalase were increased in dystrophic muscles but those of superoxide dismutases and glutathione peroxidase were unaffected.
Progestogens reduce thromboxane production by cultured human endothelial cells.
2011
Objectives Progestogens have been poorly studied concerning their roles in endothelial physiology. Prostanoids are vasoactive compounds, such as thromboxane A2, a potent vasoconstrictor, and prostacyclin, a vasodilator. We examined the effects of two progestogens used clinically, progesterone and medroxyprogesterone acetate, on thromboxane A2 production by cultured human umbilical vein endothelial cells (HUVEC) and investigated the role of progesterone receptors and the enzymes involved in production of thromboxane A2 and prostacyclin. Methods Cells were exposed to 1‐100 nmol/l of either progesterone or medroxyprogesterone acetate, and thromboxane A2 production was measured in culture mediu…
Hyperhomocysteinemia and the methylene tetrahydrofolate reductase C677T mutation in splanchnic vein thrombosis
2010
Introduction: The role that hyperhomocysteinemia (HH) and the C677T mutation in 5,10-methylenetetrahydrofolate reductase (MTHFR) play in splanchnic vein thrombosis (SVT) remains unclear due to this unusual thrombotic location. Objective: To analyse the possible association of HH with the C677T mutation in the MTHFR gene in SVT. Material and methods: We determined homocysteine levels and the C677T MTHFR mutation, along with classical cardiovascular risk factors, in 48 patients with SVT (18 Budd-Chiari syndrome, 11 mesenteric vein thrombosis, 19 portal vein thrombosis) and 84 controls. Results: In the univariate analysis, patients with SVT showed statistically higher homocysteine levels (P = …
Role of the cyclic AMP-dependent pathway in free radical-induced cholesterol accumulation in vascular smooth muscle cells.
2000
We have previously reported that free radical-treated vascular smooth muscle cells (SMC) lead to cholesterol accumulation in vitro. In the current study, we investigated the effects of oxidative stress on cyclic AMP concentration and cAMP-dependent enzymes involved in cholesterol homeostasis in A7r5 cells. Under our conditions of a mild oxidative stress, namely with no change in cell viability, we found that free radicals, initiated using azobis-amidinopropane dihydrochloride (AAPH), resulted in a dose-dependent decrease in cellular cAMP which was opposed by vitamin E preincubation. Although the addition of adenylate cyclase activators (carbacyclin and forskolin) increased cAMP levels it di…
Vasoactive intestinal peptide stimulation of cyclic guanosine monophosphate formation: further evidence for a role of nitric oxide synthase and cytos…
1993
In the rat pineal gland vasoactive intestinal peptide (VIP) and beta-adrenergic agonists stimulate cyclic guanosine monophosphate (cGMP) formation and their action is amplified by alpha 1-adrenergic agonists. Since beta-adrenergic stimulation of cGMP is suggested to involve activation of nitric oxide (NO) synthase and NO-mediated activation of cytosolic guanylate cyclase (GC), we investigated the effects of the NO synthase inhibitor N-monomethyl-L-arginine (L-NMMA) and of the cytosolic GC inhibitor methylene blue (MB) on VIP receptor-stimulated cGMP formation. Both L-NMMA and MB depressed VIP-induced cGMP formation as well as alpha 1-adrenergic potentiation of VIP-stimulated cGMP formation …
Statins and diabetes.
2005
Lipid abnormalities play an important part in raising the cardiovascular risk in diabetic subjects. The main components of diabetic dyslipidemia are increased plasma triglycerides, low concentration of high-density lipoprotein cholesterol, preponderance of small, dense low-density lipoprotein, and excessive postprandial lipemia. Small, dense low-density lipoprotein, the elevation in remnant triglyceride-rich lipoprotein particles, and the low high-density lipoprotein are the most powerful atherogenic components. The coexistence of these three factors strongly aggravates the lipid accumulation in the arterial wall and the formation of atherosclerotic plaques. The position of diabetes in card…