Article (Scientific journals)
The leaf extract of Ribes nigrum L. is a potent stimulator of the endothelial formation of NO in cultured endothelial cells and porcine coronary artery rings
Tabart, Jessica; Schini-Kerth, Valérie; PINCEMAIL, Joël et al.
2016In Journal of Berry Research, 6, p. 277-289
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Keywords :
Endothelial nitric oxide; endothelium-dependent relaxation; antioxidant; NO synthase; Ribes nigrum; blackcurrant
Abstract :
[en] BACKGROUND: Endothelial dysfunction is a major hallmark of most types of cardiovascular diseases. Numerous plant extracts have been shown to cause endothelium-dependent relaxations by increasing the endothelial formation of the potent vasoprotective factor, nitric oxide (NO). OBJECTIVE: The ability of different Ribes nigrum L. extracts (Grossulariaceae) to induce endothelium-dependent relaxation by stimulating the endothelial formation of NO was assesssed. METHODS: Ribes nigrum extracts were prepared from buds, berries and leaves by extraction (Acetone:H2O:Acetic Acid; 70/28/2 (v/v/v)) and lyophilized after acetone evaporation. The ability of the extracts to stimulate the endothelial formation of NO was assessed using cultured endothelial cells and isolated porcine coronary artery rings. RESULTS: The Ribes nigrum leaf extract increased to a greater extent than the bud and the berry extracts the formation of NO, and up-regulated eNOS mRNA expression in cultured endothelial cells (the stimulatory effects amounted to 197 ± 9 %, 134 ± 6 % and 118 ± 5 %, respectively). The leaf extract induced greater relaxations of isolated coronary arteries with endothelium than the bud and the berry extracts whereas no such effects were observed in rings without endothelium. Relaxations to the leaf extract were minimally affected by indomethacin and by inhibitors of endothelium-dependent hyperpolarization response, and markedly reduced by NG-nitro-L-arginine. CONCLUSIONS: The present findings indicate that the Ribes nigrum leaf extract is a more potent inducer of the endothelial formation of NO than the bud and the berry extracts.
Disciplines :
Food science
Author, co-author :
Tabart, Jessica ;  ULg + CEDEVIT
Schini-Kerth, Valérie;  University of Strasbourg
PINCEMAIL, Joël ;  Centre Hospitalier Universitaire de Liège - CHU > Service de chirurgie cardio-vasculaire et thoracique
Kevers, Claire ;  Université de Liège > Département des sciences de la vie > Département des sciences de la vie
Pirotte, Bernard ;  Université de Liège > Département de pharmacie > Chimie pharmaceutique
Defraigne, Jean-Olivier ;  Université de Liège > Département des sciences cliniques > Chirurgie cardio-vasculaire et thoracique
Dommes, Jacques ;  Université de Liège > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales
Language :
English
Title :
The leaf extract of Ribes nigrum L. is a potent stimulator of the endothelial formation of NO in cultured endothelial cells and porcine coronary artery rings
Publication date :
2016
Journal title :
Journal of Berry Research
ISSN :
1878-5093
eISSN :
1878-5123
Publisher :
IOS Press, Amsterdam, Netherlands
Volume :
6
Pages :
277-289
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 September 2016

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