Abstract:
BACKGROUND:Morpholinosydnonimine, a nitric oxide (NO) donor, has been reported to inhibit insulin release in isolated pancreatic islets. We studied whether transdermal application of nitroglycerin, another NO donor widely used for angina prophylaxis, influenced glucose-stimulated insulin release in healthy, young, male volunteers. METHODS AND RESULTS:Oral glucose tolerance tests [(OGTT) 75 g glucose in 200 mL of water) were performed in the presence of placebo patches or nitroglycerin-releasing 'active' patches (approx. 0.4 mg hour-1 nitroglycerin) in the same patients with a 2-week intertest interval. Venous blood samples were taken before and 15, 30, 60, 90, 120 and 180 min after the glucose load and evaluated for plasma glucose level and immunoreactive insulin responses (radioimmunoassay). Glucose-stimulated maximum increase in plasma insulin immunoreactivity were 36.3 +/- 5 and 78.8 +/- 6.1 mU mL-1 (P < 0.05) in the presence of active and placebo patches, respectively. Nevertheless, both fasting and postload blood glucose levels were the same at either patch. Active patches significantly decreased blood pressure with a marginal increase in heart rate. CONCLUSION:We conclude that inhibition of glucose-stimulated insulin release by transdermal nitroglycerin without causing hyperglycaemia may serve as a novel component of the antianginal mechanism of action of nitrates.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Kovacs P,Szilvassy Z,Hegyi P,Nemeth J,Ferdinandy P,Tosaki Adoi
10.1046/j.1365-2362.2000.00588.xkeywords:
subject
Has Abstractpub_date
2000-01-01 00:00:00pages
41-4issue
1eissn
0014-2972issn
1365-2362pii
eci588journal_volume
30pub_type
临床试验,杂志文章,随机对照试验abstract:BACKGROUND:Low blood levels of antioxidants are associated with an increased risk of developing coronary artery disease. Lipophilic antioxidants are transported in lipoproteins, and hypolipidaemic therapy may therefore alter their blood concentrations. METHODS:The present randomized, placebo-controlled cross-over stud...
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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