Drugs online research references
Int J Radiat Oncol Biol Phys. 1994 Mar 1;28(4):985-90.
Treatment-related symptoms during the first year following transperineal 125I prostate implantation.
Kleinberg L, Wallner K, Roy J, Zelefsky M, Arterbery VE, Fuks Z, Harrison L.
Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.
PURPOSE: To summarize the urinary, rectal, and sexual symptoms occurring during the first 12 months following 125I prostatic implantation. METHODS AND MATERIALS: Thirty-one patients with Stage T1 or T2 prostatic carcinoma were evaluated for morbidity following computed tomography-guided transperineal 125I implants from 1988 to 1991. The median total activity used was 47 mCi (range 35-73 mCi). Toxicity was evaluated using a modification of the Radiation Therapy Oncology Group grading system. RESULTS: Nocturia was the most common treatment-related symptom, reported by 80% of patients within 2 months after implantation, and persisted at 12 months in 45% of the patients. Mild dysuria developed in 48% of patients within 2 months of implantation; two patients needed analgesics for their dysuria. Terazosin hydrochloride (2-10 mg qd) provided subjective improvement of urinary symptoms in seven of eight patients in whom it was tried. Rectal urgency, soft stools, and increased frequency of bowel movements was reported by 25% of the patients within 1-2 months after implantation. The incidence of asymptomatic rectal bleeding or ulceration occurring at any time after implantation was 47%, but resolved in all patients with expectant treatment. Self-limited ulceration of the rectal mucosal occurred in 16%, but only one patient developed a prostato-rectal fistula, managed with an ileal conduit. Five of the 18 potent patients experienced discomfort on erection or ejaculation, beginning within several weeks of their implant. The discomfort resolved within 6 months in three of the patients, but persisted for 18 and 24 months in the other two. CONCLUSION: 125I implantation, as performed in this series, is generally associated with only mild-moderate genitourinary and rectal symptoms that may persist 6 months or more after implantation. Prostatic carcinoma, Brachytherapy, Morbidity.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8138452&dopt=Abstract
Mol Pharmacol. 1994 Apr;45(4):703-8.
The alpha 1-adrenergic receptor that mediates smooth muscle contraction in human prostate has the pharmacological properties of the cloned human alpha 1c subtype.
Forray C, Bard JA, Wetzel JM, Chiu G, Shapiro E, Tang R, Lepor H, Hartig PR, Weinshank RL, Branchek TA, et al.
Synaptic Pharmaceutical Corporation, Paramus, New Jersey 07652.
Molecular cloning studies have revealed the existence of three subtypes of alpha 1-adrenergic receptors. However, the link between any individual subtype and its functional role in the body has remained elusive. In an effort to bridge the gap between molecular biology and pathophysiology, we have chosen a model smooth muscle system, the human prostate, and investigated the role of alpha 1 subtypes in this tissue. To determine which alpha 1-adrenergic receptor subtype mediates the contractile response of the human prostate, we first studied the pharmacological properties of three cloned human alpha 1 subtypes (alpha 1a/d, alpha 1b, and alpha 1c). Prazosin, terazosin, doxazosin, alfuzosin, and abanoquil showed no selectivity for the human alpha 1 subtypes. WB-4101 and 5-methylurapidil showed a rank order of potency of alpha 1c > alpha 1a/d >> alpha 1b. Indoramin and (+)-niguldipine were selective for the alpha 1c-adrenergic receptor, with at least 10-fold lower affinity at either alpha 1a/d or alpha 1b subtypes. SK&F104856 was found to be 6-fold more potent at the alpha 1a/d receptor subtype than at alpha 1b- or alpha 1c-adrenergic receptors. We next determined the potency of these antagonists to inhibit the phenylephrine-induced contraction of human prostatic tissue in vitro. The potencies of indoramin, 5-methylurapidil, and SK&F104856 to inhibit the contractile response and to displace [3H]prazosin from the cloned human alpha 1c subtype were similar. Our data suggest that the alpha 1 receptor that mediates the contraction of human prostate smooth muscle has the pharmacological properties of the cloned human alpha 1c-adrenergic receptor. The findings of the present study suggest that selective alpha 1c-adrenergic receptor antagonists may be clinically more efficacious and better tolerated agents for the treatment of symptomatic benign prostatic hyperplasia.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8183249&dopt=Abstract
Clin Auton Res. 1993 Dec;3(6):363-8.
Effect of antihypertensive formulation on health service expenditures.
Sclar DA, Skaer TL, Robison LM, Chin A, Okamoto MP, Nakahiro RK, Gill MA.
College of Pharmacy, Washington State University, Pullman 99164-6510.
A major barrier to the management of hypertension is the extent to which patients comply with the treatment regimen. Herein we report the findings of a retrospective analysis designed to discern the relationship between antihypertensive formulation, regimen compliance and the utilization of health care services. Data for this analysis were derived from the state of South Carolina's Medicaid computer archive. The study population consisted of 1,000 randomly selected beneficiaries initially prescribed one of the following antihypertensive regimens as monotherapy: atenolol (daily); captopril (twice daily); oral clonidine (twice daily); transdermal clonidine (once a week); diltiazem (twice daily); enalapril (twice daily); metoprolol (twice daily); prazosin (twice daily); terazosin (daily); and verapamil-SR (daily). Multivariate regression analysis was used to determine the incremental influence of selected demographic characteristics, utilization of medical services prior to diagnosis for hypertension, initial antihypertensive medication, medication possession ratio for antihypertensive therapy, and the number of maintenance medications for disease state processes other than hypertension on post-period health care expenditure. Results indicate that patients initially prescribed antihypertensive medication requiring daily or weekly administration experience infrequent changes in their therapeutic regimen, far less use of concomitant therapy for blood pressure control, an increased utilization of antihypertensive medication, and a decrease in the use and cost of physician, hospital and laboratory services.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8193522&dopt=Abstract
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