The combination effects of chloroquine with Cepharanthin^® or minocycline hydrochloride were evaluated against a blood-induced infection with chloroquine-resistant P. berghei NK 65 in ICR mice. The infected mice in an untreated control group showed a progressively increasing parasitemia leading to mouse death. A two-day dosage of 20 mg base/kg of chloroquine alone produced little effect against P. berghei NK 65 infection, and all mice died from day 13 to 15 with an increasing parasitemia. A four-day dosage of 4 mg/kg of Cepharanthin^® alone produced no antimalarial activity, and all mice died by day 10. A four-day dosage of 50 mg/kg of minocycline hydrochloride alone produced a slight effect, but all mice died by day 18. Furthermore, mice given chloroquine in combination with Cepharanthin^® died from day 14 to 15. Mice given Cepharanthin^® plus minocycline hydrochloride also died from day 15 to 17. On the other hand, infected mice treated with chloroquine plus minocycline hydrochloride survived during the experiment. All mice treated with chloroquine alone, minocycline hydrochloride alone, chloroquine plus Cepharanthin^® or Cepharanthin^® plus minocycline hydrochloride showed low parasitemia levels during drug administration and a few subsequent days, but then malaria parasites re-increased in the bloodstream of the treated mice until death. On the other hand, malaria parasites in the mice given chloroquine plus minocycline hydrochloride decreased on day 6 and then could not be detected by microscopic examination during the observation period. This finding strongly suggests that the combination effects of chloroquine and minocycline hydrochloride are worthy of evaluation in human malaria. The results also clearly demonstrate the necessity and importance of in vivo experiments in estimating the activities of drugs.

We evaluated the anti-tumor activity of fermented grain extracts using a mouse tumor model. An experimental diet containing materials from fermented rice germ, wheat germ, hulled rice, soybean and seaweed (fermented materials, FM) was fed to 4-week-old female C57BL6 mice for 14 days prior to and 21 days following the subcutaneous implantation of B16 melanoma (5×10 ⁵ cells/mouse). FM retarded tumor growth and increased the duration of host survival. We further examined the anti-tumor activity of FM using the B16 metastasis model. An experimental diet containing FM was fed to C57BL6 mice for 14 days prior to and 21 days following B16 tail vein administration (5×10⁴ cells/mouse). The decrease in observed metastasis in the lungs of mice treated with FM was also significant. In order to identify this anti-tumor activity of FM, NK-activity in the FM fed mice was evaluated. However, the values were comparable to the control mice. These results suggest that the fermented grain extracts induce anti tumor activity in vivo, although the mechanism of this activity is not yet clear.

Aims : To clarify any difficulties that pharmacists and nurses may have when prescribing Kampo medicines to newly-admitted patients with a survey questionnaire at a local hospital ward.Methods : Questions for pharmacists on the handling of Kampo herbs, any perceived risks in the preparation of Kampo formulae powder extracts/pills, or in explaining Kampo medicines, based on their experiences. Also questions for nurses on the handling of Kampo medicines, as compared to western medicines, and any perceived risks in their administration at their ward.Result : All 7 pharmacists and 14 out of the 16 nurses surveyed completed their questionnaires. The pharmacists pointed out that Kampo preparation takes more time, although none perceived an increased risk with Kampo medicines, as compared to western medicines. Only 1 pharmacist had ever had experience explaining Kampo medicines to patients. The nurses, on the other hand, felt that Kampo treatments were somewhat more difficult to use, and perceived similar risk in their administration to patients.Conclusion : Both the pharmacists and nurses surveyed believed that the handling of herb medicines was somewhat difficult, but that these difficulties could be overcome with risk management. This suggests that pharmacist, nurse and office personnel education would be useful before Kampo medicines are administered to newly-admitted hospital patients.
Medicine, Kampo ; perceived risk ; seconds ; Therapeutic procedure ; Risk