Mosquito-transmitted parasites cause millions of people worldwide to suffer malaria every year. Drug-resistant parasites and insecticide-resistant mosquitoes make malaria hard to control. Thus, the next generation of antimalarial drugs that inhibit malaria infection and transmission are needed. We screened our Global Fungal Extract Library (GFEL) and obtained a candidate that completely inhibited transmission to . The candidate fungal strain was determined as . The bioactive compound was purified and identified as asperaculane B. The concentration of 50% inhibition on transmission (IC) is 7.89 µM. Notably, asperaculane B also inhibited the development of asexual with IC of 3 µM, and it is nontoxic to human cells. Therefore, asperaculane B is a new dual-functional antimalarial lead that has the potential to treat malaria and block malaria transmission.
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http://dx.doi.org/10.3390/molecules25133018 | DOI Listing |
Am J Trop Med Hyg
January 2025
Australian Defence Force Malaria and Infectious Disease Institute, Enoggera, Australia.
Allied prisoners of war (POWs) working on the Imperial Japanese Army's railroad from Thailand to Burma during 1943-1945 devised a blood transfusion service to rescue severely ill fellow prisoners who were otherwise unlikely to survive the war. Extant transfusion records (1,251 recipients, 1,189 donors) in ledger books held by the United Kingdom National Archives at Kew were accessed and analyzed. Survival to the end of the war in 1945 was determined from Commonwealth War Graves Commission records.
View Article and Find Full Text PDFJ Vector Borne Dis
October 2024
Department of Biological Sciences, King AbdulAziz University, Jeddah, Makkah, Saudi Arabia.
Background Objectives: In malaria infection, quantifying blood parasitemia is a critical step for evaluating the severity of the disease. This has generally been conducted manually, and thus, its accuracy depends on the expertise of technicians. There is an urgent need for an automated technique to overcome manual errors.
View Article and Find Full Text PDFPLoS Pathog
January 2025
LPHI, UMR 5294 CNRS/UM-UA15 Inserm, Université de Montpellier, Montpellier, France.
A sustained blood-stage infection of the human malaria parasite P. falciparum relies on the active exit of merozoites from their host erythrocytes. During this process, named egress, the infected red blood cell undergoes sequential morphological events: the rounding-up of the surrounding parasitophorous vacuole, the disruption of the vacuole membrane and finally the rupture of the red blood cell membrane.
View Article and Find Full Text PDFACS Infect Dis
January 2025
Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia 30602, United States.
Half the world's population is at risk of developing a malaria infection, which is caused by parasites of the genus . Currently, resistance has been identified to all clinically available antimalarials, highlighting an urgent need to develop novel compounds and better understand common mechanisms of resistance. We previously identified a novel tetrahydro-β-carboline compound, PRC1590, which potently kills the malaria parasite.
View Article and Find Full Text PDFMicrobiol Mol Biol Rev
January 2025
Department of Microbiology and Immunology, Weill Cornell Medical College, New York, New York, USA.
SUMMARYThe human malaria parasite is known for its ability to maintain lengthy infections that can extend for over a year. This property is derived from the parasite's capacity to continuously alter the antigens expressed on the surface of the infected red blood cell, thereby avoiding antibody recognition and immune destruction. The primary target of the immune system is an antigen called PfEMP1 that serves as a cell surface receptor and enables infected cells to adhere to the vascular endothelium and thus avoid filtration by the spleen.
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