Cāng zhú

Cāng zhú (苍术 or 蒼术 or 蒼朮), also known as black atractylodes rhizome or Rhizoma Atractylodes, is a Chinese herbal medicine. It is the dried rhizome of Atractylodes lancea (Thunb.) DC., Atractylodes chinensis (DC.) Koidz, or certain other local species including Atractylodes japonica Koidz.[1] (One study suggested that A. chinensis is a subspecies of A. lancea, and A. chinensis var. liaotungensis is a subspecies of A. coreana[2]) The medicine is distinguished from bái zhú (白术 or 白朮, white atractylodes rhizome from Atractylodes macrocephala), which is typically cultivated, whereas cāng zhú more often tends to be collected from the wild.[3] It is believed that the distinction between cāng zhú and bái zhú emerged in relatively modern times; a single drug "zhú" described in the Shen nong ben cao jing probably included many Atractylodes species.[4]

Production

Cultivation

Harvesting

The rhizome is dug up in the spring. After cleaning, it can be sliced and stir baked to a yellow brown color.[1]

Traditional attributes

In traditional Chinese medicine the herb is described as spicy or pungent, bitter, warm, and aromatic, acting on the spleen and stomach meridians.

A number of effects of the herb are described as ways of "drying dampness":[1][5]

It is also used:[1][5]

Contraindications

"Yin deficiency, deficiency of essence, and external asthenia and sweating" (due to Wei Qi deficiency) are traditional contraindications. It has been noted to interfere with drugs for diabetes.[1] It can cause allergic reactions in those who are allergic to ragweed, marigolds, daisies, or related herbs (Asteraceae). It should not be used by pregnant women or women who are breastfeeding.[6]

Biochemical analysis

There has been relatively little scientific study of cāng zhú. The popular medical site WebMD states that there is "insufficient evidence" for use of Atractylodes against "indigestion, stomach ache, bloating, edema, diarrhea, loss of appetite, rheumatism, and other conditions," and also not sufficient evidence of the herb's safety.[6] A small number of reports in the primary scientific literature support the possibility of several medical uses, but pending confirmation they must be evaluated cautiously.

Atractylodes rhizomes showed possible hepatoprotective activity in an in vitro assay of a hepatocyte cell line treated with carbon tetrachloride or galactosamine, with significant hepatoprotective activity from the isolated sesquiterpenoid components atractylon, beta-eudesmol, and hinesol.[7] One review stated that the volatile oil contains the important chemical components, and that beta-eudesmol and hinesol are its active ingredients.[8]

Compounds isolated from a hexane extract of A. lancea included atractylochromene, a potent inhibitor of 5-lipoxygenase (IC50 3.3 micromolar) and cyclooxygenase (IC50 0.6 micromolar); 2-[(2E)-3,7-dimethyl-2,6-octadienyl]-6-methyl-2,5-cyclohexadiene-1,4-dione, a selective inhibitor of lipoxygenase (IC50 0.2 micromolar); atractylon and osthol, weak inhibitors of lipoxygenase, and atractylenolides I, II, and III.[9] Atractylenolide I from bai zhú was reported to help with cachexia (a side effect of stomach cancer) and alter cytokine levels in a small non-blinded study.[10] It was found to bind competitively with lipopolysaccharide for cell surface receptors with IC50 values of 5 to 7 micromolar for inhibiting TNF-alpha, IL-1beta, and nitric oxide production.[11]

A few sources have reported antimicrobial activity for the herb when burned as an incense:[12] one coil of antiseptic atractylodes incense per 45 cubic meters of space significantly reduced the transmission of viruses and microbes, with an effect similar to formalin or ultraviolet light exposure. A study of the phototoxicity of Chinese herbal medicines found that in mice treated with UVA ultraviolet radiation, A. japonica increased sunburn edema and formation of sunburn cells, and decreased local immune responses by decreasing epidermal Lagerhans cells and contact hypersensitivity; but it also exerted its phototoxic effects on Candida albicans, a potential therapeutic use.[13]

A prenylated dihydrobenzofuran derivative isolated from A. lancea, trans-2-hydroxyisoxypropyl-3-hydroxy-7-isopentene-2,3-dihydrobenzofuran-5-carboxylic acid, was found to be cytotoxic to two cancer cell lines tested.[14]

Other components of the rhizome include:

References

  1. 1 2 3 4 5 6 Joseph P. Hou and Youyu Jin (2005-04-25). The healing power of Chinese herbs and medicinal recipes. Routledge. ISBN 978-0-7890-2202-8.
  2. ↑ Zou, X. X.; Huang, L. Q.; Cui, G. H.; Yuan, Q. J.; Peng, Y.; Liu, Y.; Xiao, P. G. (2009). "Genetic relationships of Atractylodes plants". Yao xue xue bao = Acta pharmaceutica Sinica 44 (6): 680–686. PMID 19806903.
  3. ↑ "Medicinal herbs fact sheet" (PDF). New Mexico State University.
  4. ↑ Peng, H. S.; Wang, D. Q. (2007). "The history and differentiation of raw Atractylodes commodity in successive ages". Zhonghua yi shi za zhi (Beijing, China : 1980) 37 (1): 15–18. PMID 17580746.
  5. 1 2 "Cang Zhu (Black Atractylodes Rhizone)". Sacred Lotus Arts.
  6. 1 2 "ATRACTYLODES".
  7. ↑ Kiso, Y.; Tohkin, M.; Hikino, H. (1983). "Antihepatotoxic principles of Atractylodes rhizomes". Journal of Natural Products 46 (5): 651–654. doi:10.1021/np50029a010. PMID 6418860.
  8. ↑ Fu, M.; Zhu, D.; Fang, J.; Song, H.; Yang, B.; Xiong, Y. (2009). "Advances in chemistry, molecular biology and pharmacological of Cangzhu". Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica 34 (20): 2669–2672. PMID 20069912.
  9. ↑ Marion Resch, Alois Steigel, Zhong-liang Chen, and Rudolf Bauer (1998). "5-lipoxygenase and cyclooxygenase-1 inhibitory active compounds from atractylodes lancea". J. Nat. Prod. 61 (3): 347–350. doi:10.1021/np970430b. PMID 9544564.
  10. ↑ Yi Liu; et al. (September 2008). "A Randomized Pilot Study of Atractylenolide I on Gastric Cancer Cachexia Patients". Evid Based Complement Alternat Med. 5 (3): 337–344. doi:10.1093/ecam/nem031. PMC 2529387. PMID 18830451.
  11. ↑ Wang, C.; He, L.; Wang, N.; Liu, F. (2009). "Screening anti-inflammatory components from Chinese traditional medicines using a peritoneal macrophage/cell membrane chromatography-offline-GC/MS method". Journal of Chromatography B 877 (27): 3019–3024. doi:10.1016/j.jchromb.2009.07.022. PMID 19664972.
  12. ↑ Jiang Su New Medical College. Encyclopedia of Chinese Materia Medica Shanghai: Shanghai Science and Technology Press; Wang, J. H. (ed.) 1994 Xin Bian Chang Yong Zhong Yao Shou Ce Beijing: Jin Dun Press; Wang, Y. S. 1983 Pharmacology and Applications of Chinese Materia Medica Beijing: People's Health Publisher; Dong, K. S. et al. 1998 Xian Dai Lin Chuang Zhong Yao Xue Beijing: Zhong Guo Zhong Yi Yao Press cited in Hou and Jin
  13. ↑ Bark, K. M.; Heo, E. P.; Han, K. D.; Kim, M. B.; Lee, S. T.; Gil, E. M.; Kim, T. H. (2010). "Evaluation of the phototoxic potential of plants used in oriental medicine". Journal of Ethnopharmacology 127 (1): 11–18. doi:10.1016/j.jep.2009.09.058. PMID 19818392.
  14. 1 2 3 4 5 6 7 Duan, J. A.; Wang, L.; Qian, S.; Su, S.; Tang, Y. (2008). "A new cytotoxic prenylated dihydrobenzofuran derivative and other chemical constituents from the rhizomes of Atractylodes lancea DC". Archives of Pharmacal Research 31 (8): 965–969. doi:10.1007/s12272-001-1252-z. PMID 18787781.
  15. ↑ Tanaka, K.; Ina, A. (2009). "Structure elucidation of acylsucrose derivatives from Atractylodes lanceae rhizome and Atractylodes rhizome". Natural product communications 4 (8): 1095–1098. PMID 19768991.
  16. ↑ Wang, H. X.; Liu, C. M.; Liu, Q.; Gao, K. (2008). "Three types of sesquiterpenes from rhizomes of Atractylodes lancea". Phytochemistry 69 (10): 2088–2094. doi:10.1016/j.phytochem.2008.04.008. PMID 18511090.

See also

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