Malaria remains a critical global health issue, particularly in tropical and subtropical regions. The disease, caused by parasites, is transmitted by mosquitoes and can lead to severe complications and death if untreated. The emergence of drug-resistant strains highlights the urgent need for new antimalarial agents. , a plant native to Southeast Asia, has shown promise due to its rich bioactive compounds. This study aims to evaluate the suppressive, curative, and prophylactic antimalarial potential of leaf extract (GGE) against in mice. GGE was prepared using a combination of hot water extraction and microwave-assisted heating. Acute toxicity tests revealed no significant adverse effects at a dose of 3000 mg/kg. The doses of 100, 200, and 400 mg/kg were selected based on preliminary toxicity assessments to systematically investigate the dose-dependent antimalarial efficacy of the extract. Suppressive tests showed that GGE at doses of 100, 200, and 400 mg/kg significantly reduced parasitemia levels, with the highest dose achieving a 63.97% inhibition. In these tests, GGE also increased the mean survival time (MST) of treated mice compared to untreated controls. However, GGE did not exhibit significant curative effects, as parasitemia levels in the treated groups were similar to the untreated control group. Prophylactic tests indicated that GGE pretreatment did not significantly reduce parasitemia levels or improve MST compared to controls, unlike chloroquine (CQ), which demonstrated potent prophylactic efficacy with a significant increase in MST. These findings suggest that while GGE has notable suppressive antimalarial activity, it does not exhibit strong curative or prophylactic effects at the tested doses. This study contributes to the understanding of plant-based antimalarial agents and underscores the importance of continued exploration of natural products for malaria treatment.
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http://dx.doi.org/10.1155/jotm/3471083 | DOI Listing |
Parasitol Int
January 2025
Infectious Diseases Division, Fundación Jiménez Díaz University Hospital, Madrid, Spain.
Sci Rep
January 2025
Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel St, London, WC1E 7HT, UK.
The significance of multiplication rate variation in malaria parasites needs to be determined, particularly for Plasmodium falciparum, the species that causes most virulent infections. To investigate this, parasites from cases presenting to hospital in The Gambia and from local community infections were culture-established and then tested under exponential growth conditions in a standardised six-day multiplication rate assay. The multiplication rate distribution was lower than seen previously in clinical isolates from another area in West Africa where infection is more highly endemic.
View Article and Find Full Text PDFIran J Parasitol
January 2024
Department of Pre-Clinical, Faculty of Medicine and Defence Health, National Defence University of Malaysia, Kuala Lumpur, Malaysia.
Background: The interplay of OGG1, 8-Oxoguanine, and oxidative stress triggers the exaggerated release of cytokines during malaria, which worsens the outcome of the disease. We aimed to investigate the involvement of OGG1 in malaria and assess the effect of modulating its activity on the cytokine environment and anemia during malaria in mice.
Methods: infection in ICR mice was used as a malaria model.
Cell Stress Chaperones
December 2024
Service d'Immunologie, Faculté de Médecine, de Pharmacie et d'Odontostomatologie, Université Cheikh Anta DIOP, Avenue Cheikh Anta DIOP, BP: 5005, Dakar, Senegal.
Malaria caused by Plasmodium spp., is a major public health issue in sub-Saharan Africa. The fight against malaria has stalled due to increasing resistance to treatments and insecticides.
View Article and Find Full Text PDFDev Comp Immunol
December 2024
Zoology and Ryan Institute, School of Natural Sciences, University of Galway, Galway, H91 TK33, Ireland. Electronic address:
Parasitic dinoflagellates, namely Hematodinium spp., infect a growing number of decapod crustacean species worldwide. These parasites represent a longstanding concern for fisheries in Europe and North America, and an emerging concern for aqua/polyculture systems in Asia.
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