Clinical trial NCT00330213: Effects of Red Wine and Cognac on Coronary Circulation
Official title: Effects of Red Wine and Cognac on Coronary Circulation
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Healthy
Keywords: transthoracic
echocardiography
red wine
cognac
coronary reactivity
Lead sponsor: University of Turku
Sponsor class: OTHER
Collaborators: name: Tampere University
First posted: 2006-05-26
Enrollment: 25
Sex: MALE
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: Red wine consumption is associated with reduced cardiovascular disease mortality, and the cardioprotective properties may be partly related to its ability to improve endothelial function. The purpose of this study was to determine whether moderate doses of red wine, de-alcoholized red wine and cognac improve coronary flow reserve.

Detailed description: Moderate consumption of red wine is associated with reduced coronary artery disease mortality. Cardioprotective effects of red wine may be partly related to its ability to improve endothelial function. Red wine increases endothelium-dependent flow-mediated dilatation of the brachial artery acutely after ingestion. Moreover, a heavy dose of red wine (ethanol 1.0 g/kg) has been shown to increase coronary flow reserve (CFR) as measured with transthoracic Doppler echocardiography. CFR depicts the relative increase of coronary blood flow in response to maximal myocardial hyperemia induced by adenosine. It is reduced in atherosclerosis and various conditions associated with the dysfunction of coronary microcirculation, such as diabetes and hypercholesterolemia.

Both ethanol and antioxidative polyphenols have been implicated in beneficial endothelial effects of red wine. However, their relative contributions remain uncertain in vivo. It has been suggested that red wine has stronger vasoactive properties than other alcohol beverages, and even de-alcoholized red wine may be sufficient to improve flow-mediated dilatation of the brachial artery. Cognac is also known to contain polyphenols, but its effects on coronary circulation have not been evaluated.

The purpose of this randomized controlled cross-over study was to determine with transthoracic echocardiography whether moderate doses of red wine improve CFR in response to adenosine in healthy humans. We also studied contributions of ethanol and antioxidants by comparing the effects of equal doses of alcoholic and de-alcoholized red wine, and cognac on the plasma antioxidant capacity and CFR.

Eligibility criteria: Inclusion Criteria:

* healthy males

Exclusion Criteria:

* smoking, medication of any kind

Primary outcomes:
measure: coronary flow reserve
measure: plasma antioxidant capacity
Secondary outcomes:
Other outcomes:
Locations:
city: Turku
country: Finland
facility: Dept. Clinical Physiology and Nuclear Medicine, Turku University Hospital
Study officials:
affiliation: Dept. Clinical Physiology and Nuclear Medicine, Turku University Hospital
name: Tuomas O Kiviniemi, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Kiviniemi TO, Saraste M, Koskenvuo JW, Airaksinen KE, Toikka JO, Saraste A, Parkka JP, Hartiala JJ. Coronary artery diameter can be assessed reliably with transthoracic echocardiography. Am J Physiol Heart Circ Physiol. 2004 Apr;286(4):H1515-20. doi: 10.1152/ajpheart.00819.2003. Epub 2003 Dec 4.
citation: Kiviniemi TO, Saraste A, Toikka JO, Saraste M, Raitakari OT, Parkka JP, Lehtimaki T, Hartiala JJ, Viikari J, Koskenvuo JW. Effects of cognac on coronary flow reserve and plasma antioxidant status in healthy young men. Cardiovasc Ultrasound. 2008 Jun 3;6:25. doi: 10.1186/1476-7120-6-25.