Digoxin-like immunoreactivity in Chinese medicine

Autor: J Tachi, M Yasuhara, Kiyoshi Miyai, Shigeru Iyama, Taichin Koh, Fushimi R, Kazuma Kohda, Nobuyuki Amino
Rok vydání: 1990
Předmět:
Zdroj: Therapeutic drug monitoring. 12(3)
ISSN: 0163-4356
Popis: Immunoreactive digoxin-like activity was observed in Chinese medicine, KYUSHIN tablet, taken popularly in Japan without prescription. The antibodies used in the assays of digoxin reacted with Chan-su, the major effective component of KYUSHIN, which contained cardiotonic steroids with similar chemical structure as digoxin. One tablet of KYUSHIN had digoxin-like immunoreactivity equivalent to 1.9, 1.5, and 72 micrograms of digoxin measured by three different commercial kits. These different equivalences may be attributed to differences in cross-reactivity of the antibody used in the immunoassays. Two healthy volunteers took two KYUSHIN tablets three times a day, a typical dose, and digoxin-like immunoreactivity reached almost 0.4 micrograms/L in 0.5 day. Therapeutic drug monitoring should be interpreted carefully in patients taking Chinese medicines, many of which contain the Chan-su component.
Databáze: OpenAIRE