Hyperoside: Effects, Sources and Medical Use
Hyperoside is a naturally occurring flavonoid glycoside found in many medicinal plants, known for its antioxidant and anti-inflammatory properties.
Things worth knowing about "Hyperoside"
Hyperoside is a naturally occurring flavonoid glycoside found in many medicinal plants, known for its antioxidant and anti-inflammatory properties.
What is Hyperoside?
Hyperoside (also referred to as Hyperosid) is a flavonoid glycoside belonging to the flavonol subclass. It consists of the aglycone quercetin linked to the sugar galactose. Hyperoside occurs naturally in a wide range of medicinal and herbal plants, including hawthorn (Crataegus spp.), St. John's Wort (Hypericum perforatum), Ginkgo biloba, and various species of the genus Hypericum. It is the subject of extensive phytochemical and pharmacological research.
Natural Sources
Hyperoside is found in numerous plants and is a characteristic component of many herbal extracts and phytopharmaceuticals. Key natural sources include:
- Hawthorn (Crataegus monogyna, C. laevigata): high hyperoside content in leaves and flowers
- St. John's Wort (Hypericum perforatum): hyperoside is a major active compound alongside hypericin and hyperforin
- Ginkgo biloba: leaf extracts contain relevant amounts of hyperoside
- Birch (Betula spp.): leaves are a characteristic source of hyperoside
- Passionflower (Passiflora incarnata): hyperoside is part of the flavonoid complex
Mechanism of Action
Hyperoside exerts its biological effects through several cellular and molecular mechanisms:
Antioxidant Activity
As a polyphenolic flavonoid, hyperoside is an effective free radical scavenger. It neutralizes reactive oxygen species (ROS) and protects cells from oxidative stress -- a mechanism relevant to the protection of blood vessels, nerve cells, and other tissues.
Anti-Inflammatory Effects
Hyperoside inhibits the activity of pro-inflammatory enzymes such as cyclooxygenase (COX) and lipoxygenase (LOX), as well as the release of inflammatory mediators including interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α), thereby modulating the inflammatory response.
Cardioprotective Effects
Pharmacological studies have demonstrated cardioprotective properties of hyperoside, including improved myocardial blood flow, reduced coronary vascular resistance, and a positive inotropic effect when combined with other flavonoids found in hawthorn extracts.
Neuroprotective Effects
Hyperoside protects nerve cells from apoptotic cell death induced by oxidative stress or glutamate toxicity. Preclinical studies indicate potential applications in neurodegenerative diseases, though further clinical evidence is needed.
Antimicrobial and Antiviral Activity
Laboratory studies have reported antimicrobial properties against certain bacteria and antiviral activity against selected viruses. These effects are primarily demonstrated in vitro and require further clinical validation.
Medical Applications
Hyperoside is generally not used as an isolated active ingredient, but rather as a component of standardized herbal extracts and phytopharmaceuticals. Key therapeutic areas include:
- Cardiovascular disorders: Hawthorn extracts with defined hyperoside content are used in mild heart failure (NYHA classes I-II) and declining cardiac performance.
- Mood disorders and depression: As a component of St. John's Wort extracts, hyperoside contributes to the antidepressant effect.
- Anxiety and inner restlessness: In passionflower preparations, hyperoside supports anxiolytic effects.
- Inflammatory conditions: Herbal preparations containing hyperoside-rich extracts are used as complementary treatments for inflammatory complaints.
Dosage and Safety
Hyperoside is typically administered via standardized plant extracts, with dosage depending on the specific extract and product formulation. Isolated hyperoside preparations are less common. Within the recommended dosage ranges of approved herbal medicines, hyperoside is considered well tolerated. Adverse effects are rare when used as directed. Interactions with anticoagulants or other medications cannot be excluded and should be discussed with a physician or pharmacist.
References
- Hosseinzadeh H, Nassiri-Asl M. - Pharmacological Effects of Hypericum perforatum and Its Constituents. - Phytotherapy Research, 2014.
- European Medicines Agency (EMA) - Community herbal monograph on Crataegus spp. - EMA/HMPC, 2016. Available at: www.ema.europa.eu
- Nawrot-Hadzik I et al. - Quercetin and Its Glycosides in the Treatment of Inflammations. - Frontiers in Pharmacology, 2022.
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