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Adv Ther. 1995 Nov-Dec;12(6):361-6.
The impact of 5-alpha-reductase inhibitors on the number of prostatectomies for benign prostatic hyperplasia.

Agha AH, Roy JB, Culkin DJ, Lyon K.

Department of Urology, University of Oklahoma College of Medicine, Oklahoma City, USA.

To determine the impact of a 5-alpha-reductase inhibitor on the need for surgical treatment of symptomatic benign prostatic hyperplasia (BPH) in clinical urologic practice, we retrospectively reviewed records of 794 patients treated with pharmacotherapy or surgery (or both). The number of transurethral resections of the prostate (TURPs) performed during the 30 months since introduction of finasteride was compared with the number performed during the 30 months before finasteride became available. The alpha-blockers doxazosin and prazosin were used during both times for the treatment of BPH. Of the 619 patients treated with drugs, 88.5% received finasteride for a mean of 249.6 days. The alpha-blockers, either alone or combined with finasteride, were prescribed for 11.5% of patients for a mean of 179 days. In the 30 months after the introduction of finasteride, 65 patients underwent TURP: 28 of these men had initially received drug therapy. In contrast, 138 TURPs were performed in the 30 months prior to the availability of finasteride. The use of a 5-alpha-reductase inhibitor as primary medical therapy for symptomatic BPH decreased the number of prostatectomies by 52.9% (65 vs 138). This observation warrants corroboration through additional prospective studies.

online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10163332&dopt=Abstract

surrey.ac.uk

The Triumph project aims to document the current management of lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) in general practice and to assess the effectiveness of the initial treatment options used. The first phase of the project will consider existing data sources in primary care. A patient's medical record will contain most, if not all, clinically relevant information, and databases combining the records from a network of computerised general practices can provide longitudinal data for complete populations, linking prescribing records to clinical information on disease progression and outcomes for individual patients. Database research can provide rapid information and offers the ability to conduct studies on a scale that would previously have been prohibited by both time and expense. Within the Triumph project, the THALES, General Practice Research Database (GPRD) and Integrated Primary Care Information (IPCI) databases are, or will be, used to examine the current management of LUTS/BPH in France, the UK and the Netherlands respectively. Preliminary results from the UK General Practice Research Database (GPRD) showed that LUTS/BPH incidence increased linearly from the ages of 45 to 85 years (r(2) = 0.992) and prevalence increased from 3.5% to 35% for men in their late 40s and 80s respectively. With treatment failure defined as a change to another medical therapy, catheterisation or prostatic surgery, and accounting for age and year variation, patients receiving the older alpha(1)-blockers (indoramin and prazosin) appeared to fail significantly earlier than those receiving finasteride. There was no significant difference between finasteride and the newer alpha(1)-blockers (tamsulosin, alfuzosin, terazosin and doxazosin). Patterns of changes between products from the THALES database in France were broadly similar to those seen in the UK. Copyright 2001 S. Karger AG, Basel

online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11275742&dopt=Abstract

med.teikyo-u.ac.jp

Oxidized low-density lipoprotein (ox-LDL) is well known to play an important role in atherogenesis through the recruitment of monocytes into vessel walls and the deposition of cholesterol ester in the macrophages, which leads to the formation of lipid-rich plaque. It was assumed that only trace amounts of ox-LDL were present in plasma because the half-life of ox-LDL was only a few minutes. Recently, through the use of a monoclonal antibody against ox-LDL, a quantitative method to measure serum ox-LDL concentration has been developed. Metabolites of doxazosin, an alpha1-adrenergic antihypertensive agent, have been reported to inhibit oxidation of LDL in vitro. In this study, we investigated the in vivo effect of doxazosin on LDL oxidation using this new method to measure serum ox-LDL concentration. After the administration of doxazosin for 1 to 2 months, serum concentration of ox-LDL decreased significantly (P < .05). Although the reduction of ox-LDL concentration does not strictly indicate doxazosin's antiatherosclerotic effect, it may constitute one of doxazosin's additional weapons beside lowering blood pressure and serum lipid values in the prevention of atherosclerosis.

online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11281239&dopt=Abstract













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