Stephania tetrandra is a herbaceous perennial vine of the family Menispermaceae native to China and Taiwan. It grows from a short, woody caudex, climbing to a height of around three meters. The leaves are arranged spirally on the stem, and are peltate, i.e. with the leaf petiole attached near the centre of the leaf.[1] Its root is used in traditional Chinese medicine (TCM).
| Stephania tetrandra | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Ranunculales |
| Family: | Menispermaceae |
| Genus: | Stephania |
| Species: | S. tetrandra
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| Binomial name | |
| Stephania tetrandra | |
Distribution and habitat
editStephania tetrandra occurs in shrublands at village margins, open fields, and roadsides in South Central and East China in Anhui, Fujian, Guangdong, Guangxi, Hainan, Hubei, Hunan, Jiangxi, and Zhejiang provinces, and in Taiwan.[1]
Etymology in Chinese medicine
editStephania tetrandra is among the 50 fundamental herbs used in TCM. The standard pinyin according to the Chinese [Herbal] Pharmacopia of the People's Republic of China (Chinese: 中华人民共和国药典; pinyin: Zhonghua Renmin Gongheguo Yao Dian) is: fen fang ji (Chinese: 粉防己; pinyin: fěn fáng jǐ), but it is more commonly known as Han Fang ji (Chinese: 漢防己; pinyin: hàn fáng jǐ).
Traditional medicine
editFen fang ji is used in traditional Chinese medicine to dispel wind and dampness to relieve pain and to promote diuresis.[citation needed] It is classified as acrid, bitter and cold. The part used is the root.
Chemistry
editStephania contains tetrandrine, a potent smooth muscle relaxant.[2][3][4] Stephania alkaloids have curare-like action, and can selectively inhibit T-cell-dependent immune reactions. The root contains many isoquinoline alkaloids: tetrandrine (0.6-0.9%), fangchinoline (0.5%), cyclanoline (0.1%) and dimethyltetrandrine iodide (muscle relaxant). The root also contains flavanoids. The main active alkaloids are: tetrandrine (12 to 23 grams/kg) and fangchinoline (0.3–3 mg/kg). Also present are: dimethyltetradine iodide, cyclanoline, menisine, menisidine, oxofangchirine, stephenanthrine, stepholidine and bisbenzylisoquinoline.[5][6] Fenfangjines F, G, H, and I.[7]
Other herbs sometimes used as Fang Ji
editOther plants named fang ji (Chinese: 防己, roughly "snakebite remedy") are sometimes substituted for it. Notable among these is guang fang ji (Chinese: 廣防己; pinyin: guǎng fáng jǐ), Aristolochia fanchi, whose main toxic component is aristolochic acid, a potent carcinogen and nephrotoxin. Other herbs sometimes used as Fang Ji include Cocculus trilobus, C. orbiculatus, Aristolochia fangchi, and Sinomenium acutum (Japanese Han Fang Ji or Qinfengteng).
Warnings, contraindications for substituted herbs
editWhen Aristolochia fanghi is substituted for Stephania tetrandra, the resultant guang fang ji preparations can contain toxic amounts of aristolochic acid Ingestion can lead to renal failure and even death; Aristolochia is used in TCM only with great caution. In May, 2000, the FDA began detaining any plants or medicines suspected of containing aristolochic acid, unless laboratory testing indicated they were negative for aristolochic acid.[8] The traditional route of ingestion of guang fang ji is via water decoction. Since aristolochic acid has low water solubility, water decoction is believed to be a safer route than taking guang fang ji as an uncooked powder.[9]
References
edit- ^ a b Qiming Hu, Xianrui Luo, Tao Chen & Michael G. Gilbert. "Stephania tetrandra". Flora of China. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. Retrieved 24 August 2015.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ Xu, Wei; Debeb, Bisrat G.; Lacerda, Lara; Li, Jessica; Woodward, Wendy A. (2011). "Tetrandrine, a Compound Common in Chinese Traditional Medicine, Preferentially Kills Breast Cancer Tumor Initiating Cells (TICs) in Vitro". Cancers. 3 (2): 2274–85. doi:10.3390/cancers3022274. PMC 3757417. PMID 24212809.
- ^ Ng, LT; Chiang, LC; Lin, YT; Lin, CC (2006). "Antiproliferative and apoptotic effects of tetrandrine on different human hepatoma cell lines" (PDF). The American Journal of Chinese Medicine. 34 (1): 125–35. doi:10.1142/s0192415x06003692. PMID 16437745.
- ^ Chen, YJ (2002). "Potential role of tetrandrine in cancer therapy". Acta Pharmacologica Sinica. 23 (12): 1102–6. PMID 12466047.
- ^ Choi, HS; Kim, HS; Min, KR; Kim, Y; Lim, HK; Chang, YK; Chung, MW (2000). "Anti-inflammatory effects of fangchinoline and tetrandrine". Journal of Ethnopharmacology. 69 (2): 173–9. doi:10.1016/S0378-8741(99)00141-5. PMID 10687873.
- ^ Ma, W; Nomura, M; Takahashi-Nishioka, T; Kobayashi, S (2007). "Combined effects of fangchinoline from Stephania tetrandra Radix and formononetin and calycosin from Astragalus membranaceus Radix on hyperglycemia and hypoinsulinemia in streptozotocin-diabetic mice". Biological and Pharmaceutical Bulletin. 30 (11): 2079–83. doi:10.1248/bpb.30.2079. PMID 17978479.
- ^ Ogino, Tatsunori; Katsuhara, Takao; Sato, Toshitsugu; Sasaki, Hiroshi; Okada, Minoru; Maruno, Masao (1998). "New Alkaloids from the Root of Stephania tetrandra (Fen-Fang-Ji)". Heterocycles. 48 (2): 311. doi:10.3987/COM-97-8028. ISSN 0385-5414.
- ^ "A Success Story on Aristolochic Acid". July 2001.
- ^ Chen JK, Chen TT (2004). Chinese Medical Herbology and Pharmacology. City of Industry, CA: Art of Medicine Press. ISBN 978-0-9740635-0-8.