Phytochemical Pharmacology of Toona Sinensis Extracts

Toona sinensis, a member of the Meliaceae family, has long been valued in East Asian traditional medicine and cuisine. Phytochemical investigations have revealed an extensive array of secondary metabolites, notably triterpenoids (including limonoids and apotirucallane-type derivatives), flavonoids, phenylpropanoids and sterols. These compounds underpin a broad spectrum of pharmacological activities. Extracts of leaves, buds, bark and pericarp exhibit potent antioxidant capacity through scavenging reactive oxygen species and upregulating endogenous enzymes such as superoxide dismutase. Anti-inflammatory effects arise from inhibition of pro-inflammatory mediators via suppression of the NF-κB and MAPK signalling cascades. Anticancer properties have been demonstrated by induction of apoptosis via mitochondrial pathways, cell-cycle arrest and inhibition of metastatic enzymes. Antidiabetic and nephroprotective actions involve modulation of glucose metabolism and attenuation of high-glucose-induced oxidative stress in renal mesangial cells. Additional activities include antiviral inhibition of viral attachment, hepatoprotection, antibacterial efficacy and immunomodulation. These multifaceted effects position T. sinensis extracts as promising leads for nutraceuticals and drug discovery across cardiovascular, metabolic, inflammatory and oncological indications.

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Phytochemical Pharmacology of Toona Sinensis Extracts publication trend

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Technical terms

Triterpenoids: A class of terpenes composed of six isoprene units, often bioactive and structurally diverse.

Limonoids: Oxygenated triterpenoids characterised by a furanolactone core, frequently exhibiting anticancer and insecticidal properties.

Phenylpropanoids: Secondary metabolites derived from phenylalanine, including coumarins and lignans, with antioxidant and anti-inflammatory actions.

Flavonoids: Polyphenolic compounds featuring a 15-carbon skeleton, widely recognised for free-radical scavenging and vascular benefits.

Apotirucallane-type triterpenoids: A subclass of triterpenoids based on the apotirucallane skeleton, notable for antioxidant and cytoprotective activities.

Oxidative stress: A pathological state arising from an imbalance between reactive oxygen species production and antioxidant defence mechanisms.

References

1. Traditional Uses, Chemical Constituents and Pharmacological Activities of the Toona sinensis Plant. Molecules (2024).
2. Research Advances in Toona sinensis, a Traditional Chinese Medicinal Plant and Popular Vegetable in China. Diversity (2022).
3. Antiproliferative activity and apoptosis-inducing mechanism of constituents from Toona sinensis on human cancer cells. Cancer Cell International (2013).
4. Toona sinensis Inhibits LPS‐Induced Inflammation and Migration in Vascular Smooth Muscle Cells via Suppression of Reactive Oxygen Species and NF‐κB Signaling Pathway. Oxidative Medicine and Cellular Longevity (2014).
5. The Effectiveness and Mechanism of Toona sinensis Extract Inhibit Attachment of Pandemic Influenza A (H1N1) Virus. Evidence-based Complementary and Alternative Medicine (2013).
6. Two New Apotirucallane-Type Triterpenoids from the Pericarp of Toona sinensis and Their Ability to Reduce Oxidative Stress in Rat Glomerular Mesangial Cells Cultured under High-Glucose Conditions. Molecules (2020).