arterolane and Parasitemia

arterolane has been researched along with Parasitemia* in 2 studies

Other Studies

2 other study(ies) available for arterolane and Parasitemia

Article	Year
In vitro and in vivo interaction of synthetic peroxide RBx11160 (OZ277) with piperaquine in Plasmodium models. Experimental parasitology, 2007, Volume: 115, Issue:3 RBx11160 (OZ277) is a promising antimalarial drug candidate that Ranbaxy Laboratories Limited and Medicines for Malaria Venture (MMV) are currently developing as a fixed combination with piperaquine. Here, we describe the in vitro (Plasmodium falciparum) and in vivo (Plasmodium berghei) activities of piperaquine in combination with RBx11160 and artemether. In vitro, both combinations demonstrated a slight tendency towards antagonism with mean sums of fractional inhibitory concentrations (mean Sigma FICs) of 1.5. In vivo, piperaquine and artemether were borderline antagonistic (mean Sigma FIC of 1.4). However, an additive in vivo interaction of piperaquine and RBx11160 (mean Sigma FIC of 1.1) was identified, suggesting that a RBx11160-piperaquine combination therapy in humans should allow each molecule to exert its full antimalarial effect. Topics: Animals; Antimalarials; Artemether; Artemisinins; Atovaquone; Disease Models, Animal; Drug Interactions; Drug Therapy, Combination; Erythrocytes; Female; Heterocyclic Compounds, 1-Ring; Humans; Malaria; Mice; Parasitemia; Parasitic Sensitivity Tests; Peroxides; Plasmodium berghei; Plasmodium falciparum; Pyrimethamine; Quinolines; Spiro Compounds	2007
Plasmodium vivax: in vitro susceptibility of blood stages to synthetic trioxolane compounds and the diamidine DB75. Experimental parasitology, 2006, Volume: 113, Issue:3 Plasmodium vivax is an important human pathogen causing malaria in more temperate climates of the world. Similar to Plasmodium falciparum, the causative agent for malaria tropica, drug resistance is beginning to emerge for this parasite species and this hampers adequate treatment of infection. We have used a short-term ex vivo drug assay to monitor activity of OZ277 (RBx-11160), a fully synthetic anti-malarial peroxide, and the diamidine DB75 against P. vivax. For both compounds as well as the anti-malarial reference compounds artesunate, artemether, and chloroquine, the in vitro IC(50) values were determined in one-cycle hypoxanthine incorporation assays. Results from such assays were found to be very similar compared to IC(50) values obtained from one-cycle P. falciparum hypoxanthine assays. We demonstrate the anti-parasite activity of OZ277 and the reference compounds to be faster than that of DB75. These data warrant clinical testing of OZ277 against P. vivax malaria and support recent data on clinical activity against P. vivax for DB75. Topics: Animals; Antimalarials; Aotidae; Artemether; Artemisinins; Artesunate; Benzamidines; Chloroquine; Drug Resistance; Heterocyclic Compounds, 1-Ring; Inhibitory Concentration 50; Malaria, Vivax; Parasitemia; Peroxides; Plasmodium falciparum; Plasmodium vivax; Sesquiterpenes; Spiro Compounds; Time Factors	2006

Article

Year

In vitro and in vivo interaction of synthetic peroxide RBx11160 (OZ277) with piperaquine in Plasmodium models.

Experimental parasitology, 2007, Volume: 115, Issue:3

RBx11160 (OZ277) is a promising antimalarial drug candidate that Ranbaxy Laboratories Limited and Medicines for Malaria Venture (MMV) are currently developing as a fixed combination with piperaquine. Here, we describe the in vitro (Plasmodium falciparum) and in vivo (Plasmodium berghei) activities of piperaquine in combination with RBx11160 and artemether. In vitro, both combinations demonstrated a slight tendency towards antagonism with mean sums of fractional inhibitory concentrations (mean Sigma FICs) of 1.5. In vivo, piperaquine and artemether were borderline antagonistic (mean Sigma FIC of 1.4). However, an additive in vivo interaction of piperaquine and RBx11160 (mean Sigma FIC of 1.1) was identified, suggesting that a RBx11160-piperaquine combination therapy in humans should allow each molecule to exert its full antimalarial effect.

Topics: Animals; Antimalarials; Artemether; Artemisinins; Atovaquone; Disease Models, Animal; Drug Interactions; Drug Therapy, Combination; Erythrocytes; Female; Heterocyclic Compounds, 1-Ring; Humans; Malaria; Mice; Parasitemia; Parasitic Sensitivity Tests; Peroxides; Plasmodium berghei; Plasmodium falciparum; Pyrimethamine; Quinolines; Spiro Compounds

2007

Plasmodium vivax: in vitro susceptibility of blood stages to synthetic trioxolane compounds and the diamidine DB75.

Experimental parasitology, 2006, Volume: 113, Issue:3

Plasmodium vivax is an important human pathogen causing malaria in more temperate climates of the world. Similar to Plasmodium falciparum, the causative agent for malaria tropica, drug resistance is beginning to emerge for this parasite species and this hampers adequate treatment of infection. We have used a short-term ex vivo drug assay to monitor activity of OZ277 (RBx-11160), a fully synthetic anti-malarial peroxide, and the diamidine DB75 against P. vivax. For both compounds as well as the anti-malarial reference compounds artesunate, artemether, and chloroquine, the in vitro IC(50) values were determined in one-cycle hypoxanthine incorporation assays. Results from such assays were found to be very similar compared to IC(50) values obtained from one-cycle P. falciparum hypoxanthine assays. We demonstrate the anti-parasite activity of OZ277 and the reference compounds to be faster than that of DB75. These data warrant clinical testing of OZ277 against P. vivax malaria and support recent data on clinical activity against P. vivax for DB75.

Topics: Animals; Antimalarials; Aotidae; Artemether; Artemisinins; Artesunate; Benzamidines; Chloroquine; Drug Resistance; Heterocyclic Compounds, 1-Ring; Inhibitory Concentration 50; Malaria, Vivax; Parasitemia; Peroxides; Plasmodium falciparum; Plasmodium vivax; Sesquiterpenes; Spiro Compounds; Time Factors

2006