Abstract:
BACKGROUND:Bleeding time has been reported to increase during gaseous nitric oxide (NO) inhalation in healthy volunteers and patients, and it has been speculated that inhaled NO inhibits platelet function. However, results have not been unanimous, and we have been unable to document any effects of inhaled NO on circulating platelets. MATERIALS AND METHODS:We performed a double-blind, placebo controlled cross-over study in which healthy volunteers (n = 15) inhaled NO (30 ppm, 30 min) or control gas. Aspirin (640 mg x 1 orally) was used as positive control on the third occasion (n = 14). Bleeding time was measured, and platelet function was determined flow cytometrically by measuring the expression of P-selectin on circulating platelets and locally activated platelets in wound blood. Skin perfusion close to the site for bleeding time incisions was assessed by laser Doppler flowmetry. RESULTS:Bleeding time was unaffected by NO, as there were slight increases during both NO and control inhalation (+20% and +14% respectively, P = 0.9). Similarly, NO inhalation had no effect on platelet P-selectin expression in either systemic or wound blood, or on skin perfusion. Aspirin pretreatment, on the other hand, prolonged bleeding time (P < 0.001) and decreased P-selectin expression of platelets in wound blood (P = 0.03). CONCLUSIONS:This first placebo-controlled study indicates that inhaled NO does not influence either bleeding time, platelet activity or skin perfusion. Thus, it is unlikely that treatment of critically ill patients with inhaled NO will aggravate haemostatic disturbances, which has previously been feared, by influencing platelet function.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Albert J,Norman M,Wallén NH,Frostell C,Hjemdahl Pdoi
10.1046/j.1365-2362.1999.00560.xkeywords:
subject
Has Abstractpub_date
1999-11-01 00:00:00pages
953-9issue
11eissn
0014-2972issn
1365-2362pii
eci560journal_volume
29pub_type
临床试验,杂志文章abstract:BACKGROUND:Both inflammation and oxidative stress may contribute to pathogenesis of metabolic syndrome (MetS). The C242T polymorphism (rs4673) in the CYBA gene, as the main components of NAD (P) H oxidase, causes inter-individual variability in the enzyme activity. We aimed to investigate the association between this p...
journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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abstract::In this study the muscarinic receptor antagonist atropine and the cholecystokinin (CCK)-A receptor antagonist loxiglumide were used to investigate the relative importance of cholinergic and CCK-mediated regulation of intestinal phase antro-pyloro-duodenal motility. Plasma levels of gastrointestinal hormones [pancreati...
journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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更新日期:2002-04-01 00:00:00