Showing 1-30 of 129 results for "361593"
Sanjeev Krishna et al.
Trends in parasitology, 29(7), 313-317 (2013-04-30)
The definition of artemisinin resistance is becoming one of a prolonged parasite clearance phenotype, although this variable is a complex function of both host and parasite characteristics. We discuss some of the limitations of this definition of artemisinin resistance, particularly...
Olivo Miotto et al.
Nature genetics, 45(6), 648-655 (2013-04-30)
We describe an analysis of genome variation in 825 P. falciparum samples from Asia and Africa that identifies an unusual pattern of parasite population structure at the epicenter of artemisinin resistance in western Cambodia. Within this relatively small geographic area...
Beth P Kangwana et al.
Malaria journal, 12, 81-81 (2013-03-05)
Many patients with suspected malaria in sub-Saharan Africa seek treatment from private providers, but this sector suffers from sub-standard medicine dispensing practices. To improve the quality of care received for presumptive malaria from the highly accessed private retail sector in...
Jian-Qiang Kong et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 48(2), 193-205 (2013-05-16)
Abstract: The first-line drug artemisinin is widely used against malaria. Commercially available artemisinin is extracted from plants. However, the lack of sufficient raw material, artemisinin and the cost associated with the drug's manufacture have limited the supply of ACT to...
Xin Jiang et al.
Cell, 183(1), 258-268 (2020-08-30)
Plasmodium species, the causative agent of malaria, rely on glucose for energy supply during blood stage. Inhibition of glucose uptake thus represents a potential strategy for the development of antimalarial drugs. Here, we present the crystal structures of PfHT1, the...
Hardik Chandasana et al.
Xenobiotica; the fate of foreign compounds in biological systems, 45(6), 530-537 (2015-04-04)
1. S007-867 is a novel antiplatelet agent that shows promising in vitro and in vivo efficacy. For further development and better pharmacological elucidation, we characterized pharmacokinetics and tissue distribution of S007-867 in a mouse model. 2. A sensitive, selective and robust LC-MS/MS...
Vassiliki G Kontogianni et al.
Magnetic resonance in chemistry : MRC, 58(3), 232-244 (2019-11-17)
Artemisia annua is a promising and potent antimalarial herbal drug. This activity has been ascribed to its component artemisinin, a sesquiterpene lactone. The ability to determine artemisinin and its known analogs in plant extracts is an especially difficult task because...
John Suberu et al.
Journal of pharmaceutical and biomedical analysis, 117, 522-531 (2015-10-18)
An improved liquid chromatography-tandem mass spectrometry (LC-MS/MS) protocol for rapid analysis of co-metabolites of A. annua in raw extracts was developed and extensively characterized. The new method was used to analyse metabolic profiles of 13 varieties of A. annua from...
Rick M Fairhurst et al.
The American journal of tropical medicine and hygiene, 87(2), 231-241 (2012-08-03)
Artemisinin-based combination therapies are the most effective drugs to treat Plasmodium falciparum malaria. Reduced sensitivity to artemisinin monotherapy, coupled with the emergence of parasite resistance to all partner drugs, threaten to place millions of patients at risk of inadequate treatment...
Sanna R Rijpma et al.
Malaria journal, 13, 359-359 (2014-09-15)
Therapeutic blood plasma concentrations of anti-malarial drugs are essential for successful treatment. Pharmacokinetics of pharmaceutical compounds are dependent of adsorption, distribution, metabolism, and excretion. ATP binding cassette (ABC) transport proteins are particularly involved in drug deposition, as they are located...
Katarzyna Barbacka et al.
Current pharmaceutical biotechnology, 12(11), 1743-1751 (2011-09-10)
The endoperoxide sesquiterpene lactone artemisinin which is isolated from the plant Artemisia annua, and its semi-synthetic derivatives, are potent, novel, antimalarial drugs. They are effective against multidrug-resistant Plasmodium strains and have become essential components of the so-called Artemisinin-based Combination Therapy...
Andrea Carrà et al.
Food chemistry, 142, 114-120 (2013-09-05)
In many tropical countries malaria is endemic, causing acute illness and killing people, especially children. The availability of recommended malaria medicines is scant, even though these medicines are based on artemisinin, a compound extracted from the Artemisia annua plant that...
Suhasini R Gopal et al.
Proceedings of the National Academy of Sciences of the United States of America, 116(22), 11000-11009 (2019-05-18)
The pathogenic variant c.144T>G (p.N48K) in the clarin1 gene (CLRN1) results in progressive loss of vision and hearing in Usher syndrome IIIA (USH3A) patients. CLRN1 is predicted to be an essential protein in hair bundles, the mechanosensory structure of hair...
Emmanuelle Gros et al.
Chemistry & biodiversity, 12(11), 1725-1733 (2015-11-17)
In our continuing program to isolate new compounds from the Madagascar sponge Biemna laboutei, five new tricyclic guanidine alkaloids, netamines O - S (1-5, resp.), have been identified together with the known compounds netamine E (6) and mirabilin J (7)....
Bénédicta G H Kpadonou Kpoviessi et al.
Journal of ethnopharmacology, 155(3), 1417-1423 (2014-07-25)
Different parts of Ocimum gratissimum Linn are largely used in folk medicine for the treatment of many diseases, some of which related to parasitical infections as fevers and headaches. In order to validate their use and to clarify the plant...
Debashish Das et al.
Malaria journal, 12, 125-125 (2013-04-23)
Parasitaemia on Day 3 has been proposed as a useful alert of potential artemisinin resistance, however, the normal variation of parasite clearance observed in artemisinin-based combination therapy clinical trials is poorly documented. The trends in early parasitological response following treatment...
Neha Singhal et al.
The Biochemical journal, 461(2), 189-203 (2014-08-07)
Malaria parasites must respond to stresses and environmental signals to perpetuate efficiently during their multistage development in diverse environments. To gain insights into the parasite's stress response mechanisms, we investigated a conserved Plasmodium protein, which we have named plasmoDJ1 on...
Benetode Konziase
Journal of ethnopharmacology, 172, 214-218 (2015-07-02)
Garcinia kola is a medicinal plant traditionally used for malaria therapy in Central Africa. To evaluate the antimalarial potencies in vitro and in vivo of pure biflavanones from G. kola. The pure biflavanones were obtained by bioassay-guided fractionation of a...
Gaurav Sharma et al.
Journal of the American Mosquito Control Association, 28(4), 317-319 (2013-02-12)
Using in vitro bioassays, we evaluated the crude methanol, ethanol, chloroform, and acetone leaf extracts of Artemisia annua as well as pure artemisinin against late 3rd and early 4th instars of Culex quinquefasciatus and Cx. tritaeniorhynchus. Based on the lethal...
Anais Laleve et al.
Biochimica et biophysica acta. Molecular cell research, 1867(5), 118661-118661 (2020-01-29)
Artemisinin and its derivatives kill malaria parasites and inhibit the proliferation of cancer cells. In both processes, heme was shown to play a key role in artemisinin bioactivation. We found that artemisinin and clinical artemisinin derivatives are able to compensate...
Mi Hye Kim et al.
PloS one, 9(7), e101486-e101486 (2014-07-06)
Artemisia annua L. (also called qinghao) has been well known as a source of antimalarial drug artemisinins. In addition, the herb was reported to have in vitro antioxidative activity. The present study investigated the protective effect of aqueous ethanol extract...
Amy E Mercer et al.
Expert opinion on drug metabolism & toxicology, 7(4), 427-439 (2011-02-16)
The use of artemisinin combination therapies to treat uncomplicated malaria is growing and, therefore, so is the number of children exposed to these agents. As a result, there is a huge drive to develop paediatric formulations. However, relatively limited data...
Moran Farhi et al.
Biotechnology & genetic engineering reviews, 29, 135-148 (2014-02-27)
Artemisinin, a natural compound from Artemisia annua, is highly effective in treating drug-resistant malaria. Because chemical synthesis of this natural terpenoid is not economically feasible, its only source remains as the native plant which produces only small quantities of it...
Vector control to eliminate artemisinin resistant malaria in the Greater Mekong subregion.
Jan Kolaczinski et al.
The Lancet. Infectious diseases, 14(1), 9-11 (2013-12-21)
Nicholas J White et al.
Lancet (London, England), 383(9918), 723-735 (2013-08-21)
Although global morbidity and mortality have decreased substantially, malaria, a parasite infection of red blood cells, still kills roughly 2000 people per day, most of whom are children in Africa. Two factors largely account for these decreases; increased deployment of...
Nehal Ibrahim et al.
International journal of pharmaceutics, 495(2), 671-679 (2015-09-19)
More than 40 years after its discovery, artemisinin has become the most promising antimalarial agent. However, no intravenous formulation is available due to its poor aqueous solubility. Here, we report the preparation, characterization, and in vitro and in vivo biological...
Esra Küpeli Akkol et al.
Journal of ethnopharmacology, 126(2), 314-319 (2009-08-26)
Thymbra spicata is a member of the Lamiaceae family; leaves of this plant have recently gained much popularity as a remedy to combat hypercholesterolaemia. To evaluate the antihypercholesterolaemic, antioxidant and anti-steatohepatitic activities of the diethyl ether (DEE), ethyl acetate (EtOAc)...
Nicholas M Njuguna et al.
Expert opinion on therapeutic patents, 22(10), 1179-1203 (2012-09-14)
The isolation of artemisinin from an ancient Chinese remedy in the early 1970s heralded the beginning of a new era in antimalarial drug therapy culminating in artemisinin-based combination therapies currently being the mainstay of malaria treatment worldwide. Ongoing research on...
Ildiko R Dunay et al.
Antimicrobial agents and chemotherapy, 53(10), 4450-4456 (2009-07-29)
Immunocompromised patients are at risk of developing toxoplasmosis, and although chemotherapy is available, standard treatments are often complicated by severe side effects. Artemisinin is a new highly potent antimalarial drug that has activity against Toxoplasma gondii in vitro. However, artemisinin...
The multifunctional autophagy pathway in the human malaria parasite, Plasmodium falciparum
Cervantes S, et al.
Autophagy, 10(1), 80-92 (2014)

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