Document Detail


A new isosorbide dinitrate extended-release formulation: pharmacokinetic and clinical parameters in patients with stable angina pectoris.
MedLine Citation:
PMID:  7875187     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a double-blind, cross-over study the acute clinical efficacy and pharmacokinetic profile of a newly developed isosorbide dinitrate extended-release (ISDN-ER) formulation (10 mg immediate release and 60 mg slow release) were examined in eight angina patients. Exercise tests were done 1 h before and 1, 6 and 10 h after acute ISDN or placebo; similar testing was repeated after 14 days of open-labelled treatment. At 1, 6 and 10 h after administration, ISDN-ER significantly reduced the mean ST depression at highest comparable workload (HCWL) by 0.8, 0.6, and 0.6 mm, respectively. Total exercise duration increased significantly by 46, 42 and 72 s. The rate-pressure product at HCWL was not reduced significantly at any time, while digital plethysmography demonstrated a significant effect on arterial pulse curves throughout the 10 h. After 14 days of once-daily treatment, similar or somewhat attenuated clinical effects were observed. Pharmacokinetic measurements showed a first peak of ISDN at 1-2 h and a second peak at 4-5 h. The 5-isosorbide mononitrate (5-ISMN) metabolite peaked at 5-8 h and remained high at 10 h. After 14 days of treatment, the mean plasma concentrations of ISDN and 5-ISMN before drug were 0 and 69 ng.ml-1, respectively. Thus, satisfactory acute clinical efficacy and low nitrate levels during the night were observed. However, long-term clinical efficacy needs to be established in larger, placebo-controlled trials.
Authors:
T O Klemsdal; H H Mundal; N Rudberg; K Gjesdal
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of clinical pharmacology     Volume:  47     ISSN:  0031-6970     ISO Abbreviation:  Eur. J. Clin. Pharmacol.     Publication Date:  1994  
Date Detail:
Created Date:  1995-04-06     Completed Date:  1995-04-06     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  1256165     Medline TA:  Eur J Clin Pharmacol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  351-4     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Ullevål University Hospital, Oslo, Norway.
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MeSH Terms
Descriptor/Qualifier:
Aged
Angina Pectoris / drug therapy*
Delayed-Action Preparations
Exercise Test
Formularies as Topic
Humans
Isosorbide Dinitrate / pharmacokinetics*,  pharmacology,  therapeutic use*
Male
Middle Aged
Photoplethysmography
Chemical
Reg. No./Substance:
0/Delayed-Action Preparations; 87-33-2/Isosorbide Dinitrate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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