نتایج جستجو برای: antimalarial

تعداد نتایج: 6488  

2017
MEHUL ZAVERI NEHA KAWATHEKAR

Objective: Current therapies to treat P. falciparum malaria are heavily reliant on artemisinin-based combinations. However, resistance to artemisinin has recently been identified, and resistance to key artemisinin partner drugs is already widespread. Therefore, there is an urgent need for new antimalarial drugs with improved attributes over older therapies. The objective of this research work i...

2012
Laura M. Sanz Benigno Crespo Cristina De-Cózar Xavier C. Ding Jose L. Llergo Jeremy N. Burrows Jose F. García-Bustos Francisco-Javier Gamo

Chemotherapy is still the cornerstone for malaria control. Developing drugs against Plasmodium parasites and monitoring their efficacy requires methods to accurately determine the parasite killing rate in response to treatment. Commonly used techniques essentially measure metabolic activity as a proxy for parasite viability. However, these approaches are susceptible to artefacts, as viability a...

2013
Maria Rebelo Claudia Sousa Howard M. Shapiro Maria M. Mota Martin P. Grobusch Thomas Hänscheid

Resistance of Plasmodium falciparum to almost all antimalarial drugs, including the first-line treatment with artemisinins, has been described, representing an obvious threat to malaria control. In vitro antimalarial sensitivity testing is crucial to detect and monitor drug resistance. Current assays have been successfully used to detect drug effects on parasites. However, they have some limita...

Journal: :Molecules 2016
Samuel Egieyeh James Syce Alan Christoffels Sarel F Malan

In light of current resistance to antimalarial drugs, there is a need to discover new classes of antimalarial agents with unique mechanisms of action. Identification of unique scaffolds from natural products with in vitro antiplasmodial activities may be the starting point for such new classes of antimalarial agents. We therefore conducted scaffold diversity and comparison analysis of natural p...

Journal: :Molecules 2016
Birgit Viira Thibault Gendron Don Antoine Lanfranchi Sandrine Cojean Dragos Horvath Gilles Marcou Alexandre Varnek Louis Maes Uko Maran Philippe M Loiseau Elisabeth Davioud-Charvet

Malaria is a parasitic tropical disease that kills around 600,000 patients every year. The emergence of resistant Plasmodium falciparum parasites to artemisinin-based combination therapies (ACTs) represents a significant public health threat, indicating the urgent need for new effective compounds to reverse ACT resistance and cure the disease. For this, extensive curation and homogenization of ...

Journal: :The Southeast Asian journal of tropical medicine and public health 2003
C Saiin R Rattanajak S Kamchonwongpaisan K Ingkaninan K Sukontason A Baramee B Sirithunyalug

The in vitro antimalarial activities against Plasmodium falciparum K1 of four extracts from the stembark of Picrasma javanica B1; ie water, methanol, chloroform and hexane extracts were studied using a modification of the [3H]hypoxanthine incorporation method. It was found that the hexane extract showed in vitro antimalarial activity with IC50 of 3.3 microg/ml. The extract was further fractiona...

2016
Mithun Rudrapal Dipak Chetia

Malaria disease continues to be a major health problem worldwide due to the emergence of multidrug-resistant strains of Plasmodium falciparum. In recent days, artemisinin (ART)-based drugs and combination therapies remain the drugs of choice for resistant P. falciparum malaria. However, resistance to ART-based drugs has begun to appear in some parts of the world. Endoperoxide compounds (natural...

2010
Johanna M Porter-Kelley Joann Cofie Sophonie Jean Mark E Brooks Mia Lassiter DC Ghislaine Mayer

Malaria, a disease of poverty and high morbidity and mortality in the tropical world, has led to a worldwide search for control measures. To that end, good antimalarial chemotherapies have been difficult to find in the global market and those that seem to be most effective are rapidly becoming ineffective due to the emergence and spread of drug resistance. Artemisinin, a very effective yet expe...

Journal: :The Journal of experimental biology 2003
Christopher V Plowe

Most countries in resource-poor, malaria-endemic areas lack current and comprehensive information on antimalarial drug efficacy, resulting in sub-optimal antimalarial treatment policies. Many African countries continue to use chloroquine despite very high rates of resistance, and others have changed policies based on limited data, with mixed success. Methods for measuring antimalarial drug effi...

Journal: :International Journal of Tropical Disease & Health 2023

India contributes significantly to the global Plasmodium vivax burden. Treatment of malaria is more challenging than before owing rise antimalarial drug resistance. The commonly used drugs for treatment are chloroquine, antifolates like sulfadoxine-pyrimethamine, and artemisinin-based derivatives. Antimalarial resistance studied by in vitro vivo methods. Study on mutations targets parasite a wi...

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