Institution
Mahidol University
Education•Bangkok, Nakhon Pathom, Thailand•
About: Mahidol University is a education organization based out in Bangkok, Nakhon Pathom, Thailand. It is known for research contribution in the topics: Population & Malaria. The organization has 23758 authors who have published 39761 publications receiving 878781 citations.
Topics: Population, Malaria, Plasmodium falciparum, Medicine, Plasmodium vivax
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this article, the authors examined the ability of B.1.7 to evade antibody responses elicited by natural SARS-CoV-2 infection or vaccination, and found that B. 1.7 is harder to neutralize than parental virus, compromising neutralization by some members of a major class of public antibodies through light chain contacts with residue 501.
399 citations
••
Pasteur Institute1, Leiden University Medical Center2, University of Tübingen3, International Centre for Diarrhoeal Disease Research, Bangladesh4, University of Ibadan5, Nangarhar University6, Mahidol University7, Papua New Guinea Institute of Medical Research8, Walter and Eliza Hall Institute of Medical Research9, University of Melbourne10, Mbarara University of Science and Technology11, Médecins Sans Frontières12, World Health Organization13, Jiangsu University14, National Institute of Parasitic Diseases15, Pennsylvania State University16, Cheikh Anta Diop University17, University of Lomé18, University of Douala19, Research Institute for Tropical Medicine20, Oswaldo Cruz Foundation21, University of Gondar22, Chinese Academy of Sciences23, Henry M. Jackson Foundation for the Advancement of Military Medicine24, Institut de recherche pour le développement25, University of Antwerp26, University of Kinshasa27, Thammasat University28, University of Bamako29, Medical University of Vienna30, Medicines for Malaria Venture31, Université Félix Houphouët-Boigny32, University of London33, Eijkman Institute for Molecular Biology34, Southwest University of Visual Arts35, Columbia University36, Paris Descartes University37
TL;DR: In this article, the authors analyzed the K13-propeller sequence polymorphism in 14,037 samples collected in 59 countries in which malaria is endemic and identified 108 nonsynonymous K13 mutations, which showed marked geographic disparity in their frequency and distribution.
Abstract: BACKGROUND:
Recent gains in reducing the global burden of malaria are threatened by the emergence of Plasmodium falciparum resistance to artemisinins. The discovery that mutations in portions of a P. falciparum gene encoding kelch (K13)-propeller domains are the major determinant of resistance has provided opportunities for monitoring such resistance on a global scale.
METHODS:
We analyzed the K13-propeller sequence polymorphism in 14,037 samples collected in 59 countries in which malaria is endemic. Most of the samples (84.5%) were obtained from patients who were treated at sentinel sites used for nationwide surveillance of antimalarial resistance. We evaluated the emergence and dissemination of mutations by haplotyping neighboring loci.
RESULTS:
We identified 108 nonsynonymous K13 mutations, which showed marked geographic disparity in their frequency and distribution. In Asia, 36.5% of the K13 mutations were distributed within two areas--one in Cambodia, Vietnam, and Laos and the other in western Thailand, Myanmar, and China--with no overlap. In Africa, we observed a broad array of rare nonsynonymous mutations that were not associated with delayed parasite clearance. The gene-edited Dd2 transgenic line with the A578S mutation, which expresses the most frequently observed African allele, was found to be susceptible to artemisinin in vitro on a ring-stage survival assay.
CONCLUSIONS:
No evidence of artemisinin resistance was found outside Southeast Asia and China, where resistance-associated K13 mutations were confined. The common African A578S allele was not associated with clinical or in vitro resistance to artemisinin, and many African mutations appear to be neutral. (Funded by Institut Pasteur Paris and others.).
398 citations
••
TL;DR: Genetic evidence is provided for a sudden increase in the African malaria parasite population about 10,000 years ago, followed by migration to other regions on the basis of variation in 100 worldwide mitochondrial DNA sequences.
Abstract: The emergence of virulent Plasmodium falciparum in Africa within the past 6000 years as a result of a cascade of changes in human behavior and mosquito transmission has recently been hypothesized. Here, we provide genetic evidence for a sudden increase in the African malaria parasite population about 10,000 years ago, followed by migration to other regions on the basis of variation in 100 worldwide mitochondrial DNA sequences. However, both the world and some regional populations appear to be older (50,000 to 100,000 years old), suggesting an earlier wave of migration out of Africa, perhaps during the Pleistocene migration of human beings.
396 citations
••
TL;DR: Transmission of Plasmodium knowlesiy for malaria therapy, from human to human was by blood passage, and it was uncertain whether natural infection could take place and, thus, whether this could be a zoonosis.
Abstract: In 1932, when Knowles and Das Gupta [ 1 ] succeeded in transmitting to humans the monkey malaria they had discovered, it appeared that a new agent for malaria therapy had been discovered. Since the Nobel Prize-winning research of Julius WagnerJauregg, malaria therapy had become widely used for the treatment of general paralysis of the insane (neurosyphilis), one of the main reasons for admission to psychiatric institutions. But it soon became apparent that this infection could rapidly become uncontrollable, and after several fatalities, its use was largely discontinued in favor of the less virulent human parasite Plasmodium vivax. Malaria parasites are generally rather choosy, both about their mammalian, avian, or reptilian hosts and their respective mosquito vectors. Transmission of Plasmodium knowlesiy for malaria therapy, from human to human was by blood passage. So initially, it was uncertain whether natural infection could take place and, thus, whether this could be a zoonosis. In 1960, Eyles et al. [2] demonstrated the first experimental mosquito transmission of a
396 citations
••
TL;DR: Undiluted oils of Cymbopogon nardus (citronella), Pogostemon cablin (patchuli), Syzygium aromaticum (clove) and Zanthoxylum limonella (Thai name: makaen) were the most effective and provided 2 h of complete repellency.
Abstract: The mosquito repellent activity of 38 essential oils from plants at three concentrations was screened against the mosquito Aedes aegypti under laboratory conditions using human subjects. On a volunteer's forearm, 0.1 mL of oil was applied per 30 cm2 of exposed skin. When the tested oils were applied at a 10% or 50% concentration, none of them prevented mosquito bites for as long as 2 h, but the undiluted oils of Cymbopogon nardus (citronella), Pogostemon cablin (patchuli), Syzygium aromaticum (clove) and Zanthoxylum limonella (Thai name: makaen) were the most effective and provided 2 h of complete repellency.
From these initial results, three concentrations (10%, 50% and undiluted) of citronella, patchouli, clove and makaen were selected for repellency tests against Culex quinquefasciatus and Anopheles dirus. As expected, the undiluted oil showed the highest protection in each case. Clove oil gave the longest duration of 100% repellency (2–4 h) against all three species of mosquito. Copyright © 2005 John Wiley & Sons, Ltd.
395 citations
Authors
Showing all 23819 results
Name | H-index | Papers | Citations |
---|---|---|---|
Nicholas J. White | 161 | 1352 | 104539 |
Pete Smith | 156 | 2464 | 138819 |
Randal J. Kaufman | 140 | 491 | 79527 |
Kevin Marsh | 128 | 567 | 55356 |
Barry M. Trost | 124 | 1635 | 79501 |
John R. Perfect | 119 | 573 | 52325 |
Jon Clardy | 116 | 983 | 56617 |
François Nosten | 114 | 777 | 50823 |
Paul Turner | 114 | 1099 | 61390 |
Paul Kubes | 109 | 393 | 41022 |
Ian M. Adcock | 107 | 660 | 42380 |
Peter H. Verburg | 107 | 464 | 34254 |
Guozhong Cao | 104 | 694 | 41625 |
Carol L. Shields | 102 | 1424 | 46800 |
Nicholas P. J. Day | 102 | 708 | 50588 |