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Query: UMLS:C0220723 (PCA)
 4,687 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The use of magnesium in the treatment of acute myocardial infarction remains controversial despite preliminary experimental evidence that magnesium plays a beneficial role as a regulator of thrombosis. This study examines whether oral magnesium treatment inhibits platelet-dependent thrombosis (PDT) in patients with coronary artery disease (CAD). In a randomized prospective, double-blind, crossover, and placebo-controlled study, 42 patients with CAD (37 men, 5 women, mean age 68 +/- 9 years) on aspirin received either magnesium oxide tablets (800 to 1,200 mg/day) or placebo for 3 months (phase 1) followed by a 4-week wash-out period, and the crossover treatment for 3 months (phase 2). PDT, platelet aggregation, platelet P-selectin flow cytometry, monocyte tissue factor procoagulant activity (TF-PCA), and adhesion molecule density were assessed before and after each phase. PDT was evaluated by an ex vivo perfusion model using the Badimon chamber. Median PDT was significantly reduced by 35% in patients who received magnesium versus placebo (delta change from baseline -24 vs 26 mm2/mm; p = 0.02, respectively). There was no significant effect of magnesium treatment on platelet aggregation, P-selectin expression, monocyte TF-PCA, or adhesion molecules. Oral magnesium treatment inhibited PDT in patients with stable CAD. This effect appears to be independent of platelet aggregation or P-selectin expression, and is evident despite aspirin therapy. These findings suggest a potential mechanism whereby magnesium may beneficially alter outcomes in patients with CAD.
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PMID:Oral magnesium supplementation inhibits platelet-dependent thrombosis in patients with coronary artery disease. 1042 31

The use of magnesium in the treatment of acute myocardial infarction remains controversial despite preliminary experimental evidence that magnesium plays a beneficial role as a regulator of thrombosis. The aim of our study was to determine whether oral magnesium treatment inhibits platelet-dependent thrombosis (PDT) in stable patients with coronary artery disease (CAD). In a randomized prospective, double-blind, cross-over and placebo controlled study, 42 patients with stable CAD (37 men, 5 women, mean age 68 +/- 9 years) on aspirin received either magnesium oxide tablets (800-1,200 mg/day) or placebo for 3 months (Phase 1) followed by a 4-week washout period, and the cross-over treatment for 3 months (Phase 2). PDT, platelet aggregation, platelet P-selectin flow-cytometry, monocyte tissue factor procoagulant activity (TF-PCA) and adhesion molecules density were assessed before and after each phase. PDT was evaluated by an ex-vivo perfusion model using the Badimon chamber. Median PDT was significantly reduced by 35 percent in patients who received magnesium versus placebo (D change from baseline: -24 vs. 26 microm2/mm; p = 0.02, respectively). There was no significant effect of magnesium treatment on platelet aggregation, P-selectin expression, monocyte TF-PCA or adhesion molecules. Oral magnesium treatment inhibits PDT in patients with stable CAD. This effect appears to be independent of platelet aggregation or P-selectin expression, and is evident despite aspirin therapy. These findings suggest a potential mechanism whereby magnesium may beneficially alter outcomes in patients with CAD.
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PMID:Beneficial antithrombotic effects of the association of pharmacological oral magnesium therapy with aspirin in coronary heart disease patients. 1115 97

Prostatic cancer (PC) is a frequent finding in aged men. In fact, 3% of males have the chance to die of PC. Radical prostatectomy by the retropubic approach with pelvic lymphadenectomy was made in 97 males. The treatment was performed in the urological department of the MSMSU urological chair from 1995 to 2001. 69 patients followed up for 3-64 months after the operation were eligible for analysis of the outcomes. The patients had the following PC stages: T1--11 patients, T2--44 patients, T3--14 patients. Prostate-specific antibodies ranged within 2.9-67.8 ng/ml (the mean level 16.7 ng/ml). The results of the treatment were satisfactory in 65 (94.2%) of 69 patients. The operation did not take more than 2.5 hours, mean blood loss was under 870 ml. Adequate urination after the catheter was removed resumed in 41 (59.4%) of 69 patients. Active urinary incontinence was observed within one year after the operation in 25 (36.2%) patients, total incontinence--in 3 (4.3%) patients. 51% patients retained the erectile function after nerve-sparing operation. Most of the patients had an unevenful postoperative period. During the follow-up 3 patients died of acute myocardial infarction (n = 1), intestinal cancer (n = 1) and distant PC metastases (n = 1). A postoperative fall in the PSA level under 0.3 ng/ml occurred in 49 (71%) patients, under 2 ng/ml in 7 patients (10%). In 19% of patients with pT2-3 the PCA rose over 2.0 ng/ml. Radical prostatectomy is indicated for patients with local prostatic cancer (stage T1 or T2) and probable survival from 10 to 15 years and longer. A nerve-sparing, sphincter-sparing and ablastic variant of this operation is widely used world-wide and is a method of choice for therapy of patients with retropubic prostatic cancer.
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PMID:[Radical prostatectomy: surgical techniques and preliminary results]. 1281 17