Active clinical trials for "Malaria, Falciparum"

There are worrying signs that parasitological responses to the artemisinin drugs for uncomplicated falciparum malaria are slower than elsewhere in the world.If responses to artesunate are poor it is essential to have characterised the blood concentration profile as well as the parasitological response to differentiate resistance from abnormal pharmacokinetics. The primary objective of the study is to assess the level of resistance to artemisinin derivatives in Western Cambodia. A detailed evaluation of 2 different artesunate containing regimens in patients with uncomplicated malaria will be performed. Patients will be randomised to receive either a) Artesunate 2mg/kg/day for 7 days or b) Artesunate 4mg/kg/day for 3 days plus mefloquine 15mg/kg on day 3 and 10mg/kg on day 4 The effect on parasite clearance and cure will be assessed in relation to blood concentrations of the antimalarial drugs ('PK-PD').

This study will assess the safety and efficacy of co-artemether in the treatment of acute uncomplicated P. falciparum malaria in returning non-immune travellers THIS STUDY IS NOT ENROLLING PATIENTS IN THE UNITED STATES

The purpose of this study is to determine whether artemether + lumefantrine is as effective as chloroquine + sulfadoxine pyrimethamine in the treatment of uncomplicated Plasmodium falciparum malaria

To compare Azithromycin plus Chloroquine versus Mefloquine to treat uncomplicated plasmodium falciparum malaria.

Treatment of uncomplicated P.falciparum malaria with sulfadoxine-pyrimethamine (SP) is followed by a marked increase in the density of gametocytes. To determine whether treatment with SP enhances gametocyte carriage, we randomized asymptomatic carriers of P.falciparum to receive SP alone, SP with a single dose of artesunate, or placebo, and followed them for 56 days to record gametocyte presence and density.

Acute falciparum malaria is associated with low plasma arginine and impaired nitric oxide (NO) production. Both are associated with poor outcome. This study will examine the safety and effect of escalating doses of arginine in falciparum malaria. It will determine whether arginine can increase NO production and have an effect on NO-dependent physiological measurements. The hypothesis is that arginine: will be safe in falciparum malaria; will return plasma arginine concentration to normal/supranormal levels; will increase systemic and exhaled NO; reduces oxidant stress; and improves a number of NO-dependent physiological measures of relevance to malaria.

The purpose of this study is to examine the safety, tolerability, and efficacy of adjunctive rosiglitazone in the treatment of uncomplicated P.falciparum malaria.

Chloroquine resistant falciparum malaria in Pakistan is prevalent in every malarious area examined. Resistance to the favoured second-line treatment, sulphadoxine-pyrimethamine S/P is rising fast. To avert a repetition of the resistance catastrophe that occurred in SE Asia it is critical to preserve the effective life of SP by using it in combination with artesunate. Efficacy of ACT with artesunate in combination with chloroquine, SP or amodiaquine for treatment of malaria (falciparum or vivax) will be examined in malaria patients in Pakistan.

This is a single-centre, open-label, Phase Ib study designed to assess if intravenous injection of approximately 3200 P. falciparum (NF54 strain) sporozoites can be safely administered to achieve blood-stage parasitaemia with a kinetics/PCR profile that will allow for the future characterisation of antimalarial blood-stage activity of new chemical entities in a relatively small number of participants during early drug development. Healthy, malaria-naïve adults, aged 18-55 years, will be enrolled in a maximum of 2 cohorts. Enrolment into the cohorts will proceed sequentially, with two target levels of parasitaemia, i.e., 5000 parasites/mL blood in Cohort 1 and 10000 parasites/mL blood in Cohort 2. (Based on observed levels of parasitaemia in Cohort 1, the target threshold for treatment in Cohort 2 was maintained at 5,000 p/mL (vs 10,000 p/mL in the protocol)). The 3-day antimalarial therapy regimen will be further administered and monitored until parasite clearance. Safety and tolerability will be monitored during the whole study duration.

The purpose of this study is to compare the gametocytocidal and transmission reducing activity of artemether-lumefantrine (AL) with and without a single dose of 0.25mg/kg primaquine (PQ) and sulfadoxine-pyrimethamine with amodiaquine (SPAQ) with and without single dose of 1.66mg/kg tafenoquine (TQ). Outcome measures will include infectivity to mosquitoes at 2, 5 and 7 days after treatment, gametocyte density throughout follow-up, and safety measures including haemoglobin density and the frequency of adverse events.