The bacterial redox signaller pyocyanin as an antiplasmodial agent: comparisons with its thioanalog methylene blue (Publications)
cavity of the enzyme. Like MB, also PYO was also found to be active against blood schizonts of the malaria parasite P. falciparum in vitro. Furthermore, both compounds were active against the disease transmitting [...] PYO, is well tolerated and represents a promising agent for MB-based combination therapies against malaria. Current and future clinical studies can be guided by the comparisons between MB and PYO reported [...] reported here. Additionally, it is of interest to study if and to what...
Spatial effects of mosquito bednets on child mortality (Publications)
Insecticide treated nets (ITN) have been proven to be an effective tool in reducing the burden of malaria. Few randomized clinical trials examined the spatial effect of ITNs on child mortality at a high [...] coverage. We analyzed for the first time data from a large follow-up study in an area of high perennial malaria transmission in southern Tanzania to describe the spatial effects of bednets on all-cause child mortality [...] with insecticide, and (2) the relative homogeneity of coverage with...
Estimating the duration of Plasmodium falciparum infection from trials of indoor residual spraying (Publications)
cross-sectional survey data collected from three historical trials of indoor residual spraying against malaria: one from two contiguous districts in Tanzania-Kenya (Pare Taveta) carried out in 1954, the others [...] showed considerable variation but no general age trend. There was also no clear relationship between malaria endemicity and infection duration. Analyses of successive sampling from the same individuals with [...] areas. Periods of several years may be required to evaluate long-term...
The influence of zinc supplementation on morbidity due to <em>Plasmodium falciparum</em>: a randomized trial in preschool children in Papua New Guinea (Publications)
determine the influence of zinc on malaria morbidity we conducted a randomized placebo-controlled trial of daily zinc supplementation in children residing in a malaria endemic region of Papua New Guinea [...] mg elemental zinc (n = 136) or placebo (n = 138) for 6 days a week for 46 weeks. Slide-confirmed malaria episodes were detected by surveillance of cases self-reporting to a local health center. Cross-sectional
High proportions of asymptomatic and submicroscopic <em>Plasmodium vivax </em>infections in a peri-urban area of low transmission in the Brazilian... (Publications)
regional elimination, it is important to investigate the role of this asymptomatic reservoir in malaria transmission in peri-urban areas. This study aimed to estimate the prevalence of Plasmodium spp. [...] conducted including all inhabitants in a peri-urban area of Manaus, western Amazonas State, Brazil. Malaria parasites were detected by light microscopy (LM) and qPCR. Sexual stages of Plasmodium spp. were [...] carried gametocytes and presented low asexual parasitemia. This reservoir actively...
Case studies in public-private-partnership in health with the focus of enhancing the accessibility of health interventions (Publications)
level NGO consortium with a focus on malaria and the second one is an international advocacy group with an overarching goal of protecting children against malaria through an innovative mechanism. The case [...] case study approach is used to analyze why the PPP approach was used to address malaria control and how it was implemented. Both PPPs demonstrated that relationships between the public and private sector
Synthesis and pharmacological evaluation of fluorescent and photoactivatable analogues of antiplasmodial naphthylisoquinolines (Publications)
antiplasmodial activities in vitro and in vivo, even against chloroquine-resistant strains of the malaria pathogen. For the directed optimization of these activities, an investigation of the mode of action [...] their pharmacological potential as a valuable lead structure against the widespread tropical disease malaria
Prodrugs of reverse fosmidomycin analogues (Publications)
biosynthesis that is essential in Plasmodium falciparum. The drug has been used successfully to treat malaria patients in clinical studies, thus validating IspC as an antimalarial target. However, improvement [...] compounds were also tested for their cytotoxicity toward HeLa cells and in vivo in a Plasmodium berghei malaria model as well as in the SCID mouse P. falciparum model
Imaging of <em>Plasmodium</em> liver stages to drive next-generation antimalarial drug discovery (Publications)
Most malaria drug development focuses on parasite stages detected in red blood cells, even though to achieve eradication, next-generation drugs active against both erythrocytic and exo-erythrocytic forms [...] imidazolopiperazine confers complete causal prophylactic protection (15 mg/kg) in rodent models of malaria and shows potent in vivo blood-stage therapeutic activity. The open source chemical tools resulting
The epidemiology of multiple <em>Plasmodium falciparum</em> infections. 7. Dynamics of multiple <em>Plasmodium falciparum </em>infections in infants... (Publications)
The force of infection and recovery rate for malaria in infants in a highly endemic area of Tanzania were analysed using polymerase chain reaction-restriction fragment length polymorphism genotyping of [...] recovery rates were in children under 4 months of age. The higher susceptibility of infants to clinical malaria in comparison with older children, in areas of very high transmission, may be largely a consequence