Bioactive Compounds in Cyclocarya Paliurus Extracts

Extracts of Cyclocarya paliurus leaves contain a rich array of bioactive constituents, principally flavonoids, triterpenoids and polysaccharides, that underpin its role in traditional herbal remedies and emerging nutraceutical applications. Advanced chromatographic and spectroscopic techniques have characterised quercetin- and kaempferol-based glycosides, chlorogenic acid derivatives and diverse dammarane and pentacyclic triterpenoid saponins. These compounds exert antidiabetic and antihyperlipidaemic effects through inhibition of key digestive enzymes, enhancement of insulin-stimulated glucose uptake in adipocytes, protection of pancreatic β cells from apoptosis and modulation of insulin signalling cascades such as PI3K–Akt and MAPK. Complementary antioxidant and anti-inflammatory activities further contribute to improvement of dyslipidaemia and metabolic inflammation. Standardisation of extract composition, elucidation of pharmacokinetics and optimisation of dosage are critical next steps to translate these findings into dietary therapeutics and functional foods with global impact.

Research from Nature Portfolio

Recent studies have demonstrated that leaf extract of C. paliurus significantly preserves pancreatic β cells and improves metabolic parameters in diet-induced diabetic mouse models. Treatment reduces hyperglycaemia and body weight loss while raising circulating insulin levels. Mechanistic investigations reveal inhibition of β-cell apoptosis through suppression of caspase-8, caspase-9 and cleaved caspase-3, reduction of the Bax/Bcl-2 ratio and attenuation of MAPK pathway phosphorylation (p38, ERK and JNK), together with activation of Akt signalling. Additionally, extract administration alleviates hepatic steatosis, nephropathy and cardiac hypertrophy, underscoring its systemic protective effects in glucolipotoxic conditions.

Bioactive Compounds in Cyclocarya Paliurus Extracts publication trend

The graph below shows the total number of articles in bioactive compounds in cyclocarya paliurus extracts across all publications each year (not limited to Nature Index journals).

Technical terms

Flavonoids: Polyphenolic secondary metabolites with a C6–C3–C6 framework, noted for antioxidant and enzyme-modulating properties.

Triterpenoids: Isoprenoid compounds composed of six isoprene units, often occurring as bioactive glycosides.

Saponins: Glycosylated triterpenoids or steroids that form stable foams in water and exhibit diverse pharmacological activities.

α-Glucosidase: Enzyme that cleaves terminal α-glucosidic bonds in oligosaccharides, its inhibition delays carbohydrate digestion.

Pancreatic lipase: Enzyme responsible for hydrolysis of dietary triglycerides into absorbable free fatty acids and monoglycerides.

3T3-L1 adipocytes: Differentiated murine cell line widely used as an in vitro model of white adipose tissue and insulin responsiveness.

Apoptosis: Programmed cell death mediated by caspases and Bcl-2 family proteins, essential for tissue homeostasis.

PI3K–Akt pathway: Intracellular signalling cascade activated by insulin receptor engagement, promoting glucose uptake and cell survival.

MAPK pathway: Mitogen-activated protein kinase cascade that transduces extracellular stimuli into cellular responses, including proliferation, stress response and apoptosis regulation.

References

1. Potential hypoglycemic and hypolipidemic bioactive constituents in Cyclocarya paliurus leaves explored by affinity ultrafiltration with α‐glucosidase and pancreatic lipase. eFood (2023).
2. Triterpenoids from the Leaves of Cyclocarya paliurus and Their Glucose Uptake Activity in 3T3-L1 Adipocytes. Molecules (2023).
3. Cyclocarya paliurus tea leaves enhances pancreatic β cell preservation through inhibition of apoptosis. Scientific Reports (2017).
4. Potential Role of Natural Plant Medicine Cyclocarya paliurus in the Treatment of Type 2 Diabetes Mellitus. Journal of Diabetes Research (2021).