Eurycoma longifolia, locally known as 'Tongkat Ali' is a popular local medicinal plant that possess a lot of medicinal properties as claimed traditionally, especially in the treatment of malaria. The claims have been proven scientifically on isolated compounds from the plant. The present study is to investigate the anti malaria properties of Eurycoma longifolia standardized extract (root) (TA164) alone and in combination with artemisinin in vivo. Combination treatment of the standardized extract (TA164) with artemisinin suppressed P. yoelii infection in the experimental mice. The 4 day suppressive test showed that TA164 suppressed the parasitemia of P. yoelii-infected mice as dose dependent manner (10, 30 and 60 mg/kg BW) by oral and subcutaneous treatment. By oral administration, combination of TA164 at 10, 30 and 60 mg/kg BW each with artemisinin respectively showed a significant increase in the parasitemia suppression to 63, 67 and 80 percent as compared to artemisinin single treatment (31%). Using subcutaneous administration, at 10 mg/kg BW of TA164 in combination with 1.7 mg/kg BW of artemisinin gave a suppression of 80% of infection. This study showed that combination treatment of TA164 with artemisinin gives a promising potential anti malaria candidate using both oral and subcutaneous route, the later being the most potent.
artemisinine ; therapeutic aspects ; Psychological suppression ; Laboratory mice ; Subcutaneous

I will illustrate our research, which elucidate the efficacy of Kampo medicines for “Ki”.In order to compare hangekobokuto with kososan, we assessed them by binocular infrared video pupillography. The results revealed that sympathetic nerve activity was inhibited by taking hangekobokuto in the patients belonging to sympathetic dominant group, while it was stimulated by taking kososan in the patients belonging to parasympathetic dominant group.Administration of hangekobokuto has decreased the value of brachial-ankle pulse wave velocity. This result suggests that hangekobokuto ameliorates the elasticity of vascular wall, which is closely related to autonomic nervous system.The gastric emptying rate, which was evaluated by ultrasonographic method in FD patients, showed its significant increase after administration of hangekobokuto.Global gene expression analysis using a DNA chip has shown the pharmacological actions of kososan.In the animal study using depression-like model mice, we have found that kososan decreased the suppression of neurogenesis.
Medicine, Kampo ; experience (practice) ; Clinical Research ; Cancer patients and suicide and depression ; Psychological suppression