Taschenbuch der Drogenkunde

Hoppe, Heinz A.

doi:10.1515/9783110844962

Cited by 14 publications

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“…Prunus spinosa L. (blackthorn or sloe) flower is a traditional herbal medicine valued in Central and Eastern Europe for its vasoprotective, anti-inflammatory, diuretic, detoxifying (blood purifying) and spasmolytic properties, and is recommended, among others, in the treatment of intestinal and respiratory tract disorders, as well as various CVDs, such as atherosclerosis, myocarditis and cardiac neurosis [ 14 , 15 , 16 , 17 ]. The results of our previous phytochemical and in vitro studies demonstrated that P. spinosa flowers are a rich source of natural polyphenols with strong antioxidant and anti-inflammatory activity [ 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Prunus spinosa L. Flower Extracts, Model Polyphenols and Phenolic Metabolites on Oxidative/Nitrative Modifications of Human Plasma Components with Particular Emphasis on Fibrinogen In Vitro

et al. 2021

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Oxidative post-translational modifications of fibrinogen (a multifunctional blood plasma protein essential for hemostasis) are associated with the pathogenesis of cardiovascular disorders (CVDs). Prunus spinosa flower is a herbal medicine used in an adjuvant treatment of CVDs and rich in polyphenolic antioxidants. In the present study, phytochemically standardized P. spinosa flower extracts, their primary native polyphenols and potential phenolic metabolites were evaluated in vitro for their protective effects on fibrinogen (isolated and in the human plasma matrix) using a panel of complementary methods (SDS-PAGE, western blot, C-ELISA, fluorometry, FRAP, TBARS). The results revealed that the tested analytes at in vivo relevant levels (1–5 µg/mL) considerably reduced the structural changes in the fibrinogen molecule under the oxidative stress conditions induced by peroxynitrite. In particular, they diminished the oxidation and/or nitration of amino acid residues, including tyrosine and tryptophan, as well as the formation of high molecular weight aggregates. The decrease in the levels of 3-nitrotyrosine was about 13.5–33.0% and 58.3–97.1% at 1 µg/mL and 50 µg/mL, respectively. The study indicated that low molecular weight polyphenols were crucial for the protective activity of the extracts toward fibrinogen and other human plasma components. The investigated model compounds effectively protected total plasma proteins and lipids against oxidative damage (by reducing the levels of 3-nitrotyrosine and thiobarbituric acid-reactive substances and normalizing/enhancing the non-enzymatic antioxidant capacity of plasma). The work provides insight into the role of native and metabolized polyphenols as contributory factors to the systemic activity of blackthorn flower extracts within the circulatory system.

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