Myricitrin (Myricetin 3-O-rhamnoside)

Myricitrin, a flavonoid and Myricetin 3-O-rhamnoside, exhibits potent antioxidant properties by reducing oxidative stress markers. It shows preliminary evidence for blood sugar regulation through increased glycogen content and Glut-4 gene expression.

Origin & History

Myricitrin (myricetin 3-O-rhamnoside) is a flavonoid glycoside derived primarily from plants such as Myrica rubra and Elaeocarpus floribundus (Indian olive tree), occurring naturally in various fruits, vegetables, and teas. It is extracted from plant sources like leaves or bark using standard phytochemical methods including solvent extraction or chromatography.

Historical & Cultural Context

No specific historical or traditional medicinal uses are documented for myricitrin in the available sources. While source plants like Myrica rubra and Elaeocarpus floribundus suggest potential ethnobotanical relevance, traditional applications are not detailed in the research.

Health Benefits

• Antioxidant effects: Reduces oxidative stress markers (MDA) and enhances antioxidant enzyme activity (SOD, CAT) in preclinical hyperglycemia models (preliminary evidence)
• Blood sugar support: Increases glycogen content and Glut-4 gene expression in mouse myoblast cells (in vitro evidence only)
• Cellular protection: Improves cell viability and modulates apoptosis via Bax/Bcl-2 ratio in oxidative stress models (preclinical data)
• Anti-inflammatory potential: Related compound myricetin shows modulation of inflammatory pathways including NF-κB and MAPK (indirect evidence)
• Neuroprotective potential: Parent compound myricetin influences pathways relevant to neurodegeneration (AChE, BrdU/NeuN) in preclinical models

How It Works

Myricitrin exerts antioxidant effects by directly scavenging free radicals and upregulating endogenous antioxidant enzymes such as superoxide dismutase (SOD) and catalase (CAT). In preclinical hyperglycemia models, it reduces malondialdehyde (MDA) levels, indicating decreased lipid peroxidation. Additionally, Myricitrin has been shown to enhance glycogen content and increase Glut-4 gene expression in mouse myoblast cells, suggesting a role in glucose uptake and utilization.

Scientific Research

No human clinical trials, RCTs, or meta-analyses specifically on myricitrin are identified in the available sources, with evidence limited to preclinical studies. In vitro studies used myricitrin at 1-10 μM concentrations in C2C12 mouse myoblast cells, showing antioxidant effects over 48 hours. Reviews emphasize the critical need for comprehensive clinical research to establish human efficacy.

Clinical Summary

Current research on Myricitrin primarily consists of in vitro studies and preclinical animal models. Preliminary evidence from preclinical hyperglycemia models demonstrates Myricitrin's ability to reduce oxidative stress markers like MDA while enhancing antioxidant enzyme activities (SOD, CAT). In vitro studies using mouse myoblast cells indicate increased glycogen content and Glut-4 gene expression, suggesting potential benefits for blood sugar support. Human clinical trials are currently lacking, so these findings are considered preliminary and require further investigation to confirm efficacy and safety in humans.

Nutritional Profile

{"macronutrients": {"fiber": "Not applicable", "protein": "Not applicable"}, "micronutrients": {"vitamins": "Not applicable", "minerals": "Not applicable"}, "bioactive_compounds": {"myricetin": "Present as myricitrin, a glycoside form", "rhamnose": "Present as part of the myricitrin structure"}, "bioavailability_notes": "Myricitrin is a glycoside of myricetin, which may affect its absorption and metabolism. The glycoside form can influence the compound's solubility and stability, potentially impacting its bioavailability."}

Preparation & Dosage

No clinically studied dosage ranges are reported for myricitrin in human trials. Preclinical in vitro studies used 1-10 μM concentrations, but human equivalent doses have not been established. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Myricetin, Quercetin, Resveratrol, Green Tea Extract, Vitamin C

Safety & Interactions

The safety profile of Myricitrin in humans is not well-established due to the limited number of human clinical trials. Based on its classification as a flavonoid, it is generally considered to have a low toxicity potential. However, specific side effects, drug interactions, or contraindications for Myricitrin have not been thoroughly documented. As a precautionary measure, pregnant or breastfeeding individuals and those on medication should consult a healthcare professional before use.