DigoxinLike Immunoreactivity in Chinese Medicine

Autor: Fushimi, Ryo, Koh, Taichin, Iyama, Shigeru, Yasuhara, Masayoshi, Tachi, Junko, Kohda, Kazuma, Amino, Nobuyuki, Miyai, Kiyoshi
Zdroj: Therapeutic Drug Monitoring; May 1990, Vol. 12 Issue: 3 p242-245, 4p
Abstrakt: 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 digoxinlike immunoreactivity equivalent to 1.9, 1.5, and 72μg 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 μg/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: Supplemental Index