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Farnesyl diphosphate synthase/geranylgeranyl diphosphate synthase (FPPS/GGPPS) is a key enzyme in the synthesis of isoprenic chains. Risedronate, a bisphosphonate containing nitrogen (N-BP), is a potent inhibitor of blood stage Plasmodium. Here, we show that P. falciparum parasites overexpressing FPPS/GGPPS are more resistant to risedronate, suggesting that this enzyme is an important target, and bisphosphonate analogues can be used as potential antimalarial drugs.
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http://dx.doi.org/10.1590/0074-02760180174 | DOI Listing |
J Pathol
September 2025
Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo (ICB/USP), São Paulo, Brazil.
We hypothesized that variants in inflammasome-related genes could influence susceptibility to gestational malaria (GM). To test this, we conducted an association study in a cohort of pregnant women from a malaria-endemic region in northern Brazil, assessing whether specific functional single nucleotide variants (SNVs) in inflammasome genes affect (1) the response to Plasmodium infection and (2) the development of placental malaria. Our findings revealed that the NLRP1 p.
View Article and Find Full Text PDFTurkiye Parazitol Derg
September 2025
Manisa Celal Bayar University Faculty of Medicine, Department of Medical Parasitology, Manisa, Türkiye.
Objective: () (common juniper) is a plant that has been used for medicinal purposes for centuries. This study aims to evaluate the antiparasitic effects of ethanol, methanol, chloroform, and water extracts of fruits against , , , and
Methods: The antiparasitic activities of fruit extracts prepared at room temperature using the shaking maceration method were tested against using the ring stage survival test, and against , , and using the broth microdilution method.
Results: The chloroform extract of fruits was found to be effective on , , , and parasites at concentrations of 15, 10, 30 and 30 µg/mL, respectively.
ACS Infect Dis
September 2025
Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States.
Malaria treatments are compromised by drug resistance, creating an urgent need to discover new drugs. We used a phenotypic high-throughput screening (HTS) platform to identify new antimalarials, uncovering three related pyrrole-, indole-, and indoline-based series with a shared α-azacyclic acetamide core. These compounds showed fast-killing activity on asexual blood-stage parasites, were not cytotoxic, and disrupted parasite intracellular pH and Na regulation similarly to cipargamin (KAE609), a clinically advanced inhibitor of the Na pump (ATP4).
View Article and Find Full Text PDFJ Med Chem
September 2025
Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany.
New treatment strategies are required to combat the spread of drug-resistant malaria. The synthesis and preclinical evaluation of novel 3-hydroxy-propanamidines (HPAs), with modifications of the phenanthrene and the 4-fluorobenzamidine moieties, has yielded several analogs exhibiting excellent in vitro growth inhibition of drug-sensitive or resistant fresh clinical isolates and culture-adapted strains. No cytotoxicity in the human HepG2 cell line was observed, demonstrating notable parasite selectivity.
View Article and Find Full Text PDFChem Biodivers
September 2025
Institute of Chemistry, Federal University of Catalão, Catalão, Brazil.
Strategies have been employed to address antimalarial drug resistance, including the exploration of new therapeutic targets. In this study, the stem bark of Dalbergia miscolobium was investigated using in vitro assays against Plasmodium falciparum and pyruvate kinase II (PyrKII), an essential enzyme for parasite development. Compounds were dereplicated from ethanolic extract (IC = 9 µg/mL) using LC-HRMS, revealing active constituents: procyanidin A1 (2), biochanin (5) and formononetin (7).
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