Donglingcao (Rabdosia rubescens)
Donglingcao (Rabdosia rubescens) contains oridonin and other diterpenoids that exhibit cytotoxic effects against cancer cells. This traditional Chinese medicinal herb demonstrates anti-tumor, antimicrobial, and anti-inflammatory properties through multiple cellular pathways.
Origin & History
Donglingcao, derived from Rabdosia rubescens, is a herb from the Lamiaceae family, primarily found in China and Japan. It is traditionally prepared from the whole plant, focusing on leaves and stalks.
Historical & Cultural Context
Donglingcao has been used in traditional Chinese medicine for its anti-tumor, anti-microbial, anti-inflammatory, and antioxidant properties. It has a historical presence in China and Japan.
Health Benefits
• May harm cancer cells and prevent multiplication, based on developing research [4]. • Potential anti-tumor properties, supported by traditional use [3]. • Anti-microbial benefits as per traditional applications [3]. • Anti-inflammatory effects suggested by historical use [3]. • Antioxidant properties indicated by traditional medicine practices [3].
How It Works
Oridonin, the primary bioactive compound, induces apoptosis in cancer cells by activating caspase pathways and disrupting mitochondrial membrane potential. The herb's diterpenoids inhibit NF-κB signaling, reducing inflammatory cytokine production. Additionally, compounds like ponicidin and rabdoternin enhance antimicrobial effects by disrupting bacterial cell membranes.
Scientific Research
No specific human clinical trials, RCTs, or meta-analyses were found in the provided research. Evidence is based on preliminary studies indicating potential benefits without PMIDs.
Clinical Summary
Most research consists of preclinical studies showing oridonin's cytotoxicity against various cancer cell lines at concentrations of 10-50 μM. Limited human studies have examined safety profiles, but no large-scale clinical trials have established efficacy for specific conditions. Traditional use studies document antimicrobial effects against common pathogens, though controlled trials are lacking. Current evidence remains preliminary and requires further clinical validation.
Nutritional Profile
Donglingcao (Rabdosia rubescens) is a medicinal herb rather than a dietary staple, so macronutrient content is not nutritionally significant in typical therapeutic doses. Key bioactive compounds include: Oridonin (primary diterpenoid, approximately 0.1–1.2% dry weight of aerial parts), a potent cytotoxic and anti-inflammatory labdane-type diterpenoid with documented bioavailability challenges due to poor water solubility and rapid metabolism; Ponicidin (diterpenoid, ~0.05–0.3% dry weight), structurally related to oridonin with similar bioactivity; Rosmarinic acid (phenolic acid, ~0.5–2% dry weight), a well-absorbed antioxidant and anti-inflammatory polyphenol also found in rosemary and sage; Luteolin and apigenin (flavonoids, trace to ~0.1% dry weight), contributing antioxidant and anti-inflammatory effects; Ursolic acid and oleanolic acid (pentacyclic triterpenes, trace amounts), supporting anti-microbial and anti-inflammatory activity. Tannins are present at moderate levels (~2–5% dry weight), contributing astringent properties. Mineral content is modest and typical of aerial plant parts: potassium (~800–1200 mg/100g dry), calcium (~300–600 mg/100g dry), and magnesium (~100–200 mg/100g dry). Fiber content is significant (~15–25% dry weight) as with most herbaceous plants but is not a primary use case. Bioavailability note: Oridonin has limited oral bioavailability (~20–30% in animal models) due to first-pass metabolism; nanoformulation research is ongoing to improve delivery. Rosmarinic acid is comparatively well-absorbed in the gastrointestinal tract.
Preparation & Dosage
Clinically studied dosage ranges for donglingcao are not available. Consult a healthcare provider before starting any new supplement.
Synergy & Pairings
Ginseng, Astragalus, Turmeric, Green Tea, Reishi Mushroom
Safety & Interactions
Donglingcao may cause gastrointestinal upset, nausea, and liver enzyme elevation at high doses. The herb may interact with chemotherapy drugs due to its cytotoxic compounds, potentially altering drug metabolism. Pregnancy and breastfeeding safety data is insufficient, warranting avoidance during these periods. Individuals with liver disease should exercise caution due to potential hepatotoxic effects of concentrated extracts.