Abstract:
:1. Nitric oxide is recognised as an important biological mediator, which is thought to be involved in cardiovascular homeostasis. The purpose of this study was to investigate the effects of basal nitric oxide synthesis on cardiac function in man, by blocking nitric oxide synthesis with NG-monomethyl-L-arginine (L-NMMA). 2. Eight normal volunteers were studied on two separate occasions. Measurements of heart rate, blood pressure and echocardiographic indices of left ventricular systolic and diastolic function were made at baseline on each day and every 20 min during incremental infusion of L-NMMA (0.1, 0.2, 0.5, 1.0 and 2.0 mg kg-1 h-1) or placebo. 3. A trend towards reduction in heart rate was observed with L-NMMA infusion although this did not reach statistical significance, whereas significant increases in both systolic blood pressure (at 2.0 mg kg-1 h-1) and systemic vascular resistance index (at 0.5 mg kg-1 h-1) were seen. 4. L-NMMA infusion caused significant reductions in stroke distance and cardiac index, although there was no change in the ratio of end systolic wall stress/end systolic volume index (an afterload independent index of left ventricular systolic performance). 5. The isovolumic relaxation time significantly increased with L-NMMA infusion, together with a significant reduction in the 'E' wave flow velocity integral. Reductions in both peak E/A ratio and E/A flow velocity integral ratio were also seen, although these failed to reach statistical significance. 6. In conclusion, the basal generation of nitric oxide in man appears to maintain a vasodilated state, and modifies left ventricular diastolic filling parameters.
journal_name
Br J Clin Pharmacoljournal_title
British journal of clinical pharmacologyauthors
Clarkson PB,Lim PO,MacDonald TMdoi
10.1111/j.1365-2125.1995.tb04550.xsubject
Has Abstractpub_date
1995-10-01 00:00:00pages
299-305issue
4eissn
0306-5251issn
1365-2125journal_volume
40pub_type
临床试验,杂志文章,随机对照试验abstract::We define a me-too drug as a pharmacologically active compound that is structurally related to a first-in-class compound, regarded as belonging to the same therapeutic class as the original compound, and used for the same therapeutic purposes, but which may differ in some respects, such as specificity of pharmacologic...
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abstract::Responses of human bronchial strip preparations to contractile and relaxant agonists were measured in preparations from non-diseased and from asthmatic lung obtained 3-15 h post-mortem. The potencies of carbachol and histamine were approximately two times less in asthmatic than in non-diseased bronchi. This was statis...
journal_title:British journal of clinical pharmacology
pub_type: 杂志文章
doi:10.1111/j.1365-2125.1986.tb02956.x
更新日期:1986-12-01 00:00:00
abstract:AIMS:Using human liver microsomes from donors of the CYP2D6 poor and extensive metabolizer genotypes, the role of individual cytochromes P-450 in the oxidative metabolism of dihydrocodeine was investigated. METHODS:The kinetics of formation of N- and O-demethylated metabolites, nordihydrocodeine and dihydromorphine, w...
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pub_type: 杂志文章
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更新日期:1997-12-01 00:00:00
abstract:WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT:The dominant health economic units upon which new treatment funding decisions are made are the incremental cost per life year gained (LYG) or the cost per quality-adjusted life year (QALY) gained. Neither of these units modifies the amount of health gained, by the amount of heal...
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abstract:AIMS:A systematic review of the literature published in English over 10 years was undertaken in order to describe the use of electronic healthcare data in the identification of potential adverse drug reactions (ADRs) in children. METHODS:MEDLINE and EMBASE were searched using MESH headings and text words. Titles, keyw...
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journal_title:British journal of clinical pharmacology
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doi:10.1111/j.1365-2125.1984.tb02584.x
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journal_title:British journal of clinical pharmacology
pub_type: 杂志文章
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journal_title:British journal of clinical pharmacology
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doi:10.1046/j.1365-2125.1998.00048.x
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pub_type: 临床试验,杂志文章
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journal_title:British journal of clinical pharmacology
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journal_title:British journal of clinical pharmacology
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doi:10.1111/j.1365-2125.1984.tb02385.x
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journal_title:British journal of clinical pharmacology
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1999-03-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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journal_title:British journal of clinical pharmacology
pub_type: 杂志文章
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更新日期:2013-03-01 00:00:00
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abstract::1. Oral micronized progesterone (P) is proposed for the treatment of certain endocrine gynaecological disorders. To examine the effects of P on performance and mood, a randomized, placebo-controlled study of 24 healthy females ages 18-24 years on low-dose oral contraceptives was conducted. 2. Subjects were admitted to...
journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1992-03-01 00:00:00
abstract::Imagine a medicine that is expected to have very limited effects based upon knowledge of its pharmacology and (patho)physiology and that is studied in the wrong population, with low-quality studies that use a surrogate end-point that relates to the clinical end-point in a partial manner at most. Such a medicine would ...
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pub_type: 杂志文章,评审
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更新日期:2013-06-01 00:00:00
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2125.1983.tb01553.x
更新日期:1983-06-01 00:00:00
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1996-01-01 00:00:00
abstract:AIMS:The aim of this study was to use data from an experimental induced blood stage malaria clinical trial to characterize the antimalarial activity of the new compound Actelion-451840 using pharmacokinetic/pharmacodynamic (PK/PD) modelling. Then, using simulations from the model, the dose and dosing regimen necessary ...
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pub_type: 杂志文章,meta分析,评审
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更新日期:2016-09-01 00:00:00
abstract::1. The effects of heart failure due to chronic myocardial infarction on the responsiveness to injected angiotensin I and ACE inhibition by intravenous cilazapril (1 mg kg-1) were evaluated. 2. For this purpose one group of 17 rats with a 4-week old myocardial infarction was compared with a group of 10 sham operated ra...
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