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https://www.readbyqxmd.com/read/28438204/evidence-on-anti-malarial-and-diagnostic-markets-in-cambodia-to-guide-malaria-elimination-strategies-and-policies
#1
Sochea Phok, Dysoley Lek
BACKGROUND: Understanding Cambodia's anti-malarial and diagnostic landscape in 2015 is critical for informing and monitoring strategies and policies as Cambodia moves forward with national efforts to eliminate malaria. The aim of this paper is to present timely and key findings on the public and private sector anti-malarial and diagnostic landscape in Cambodia. This evidence can serve as a baseline benchmark for guiding implementation of national strategies as well as other regional initiatives to address malaria elimination activities...
April 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28438197/anti-malarial-landscape-in-myanmar-results-from-a-nationally-representative-survey-among-community-health-workers-and-the-private-sector-outlets-in-2015-2016
#2
Si Thu Thein, Hnin Su Su Khin, Aung Thi
BACKGROUND: In 2015/2016, an ACTwatch outlet survey was implemented to assess the anti-malarial and malaria testing landscape in Myanmar across four domains (Eastern, Central, Coastal, Western regions). Indicators provide an important benchmark to guide Myanmar's new National Strategic Plan to eliminate malaria by 2030. METHODS: This was a cross-sectional survey, which employed stratified cluster-random sampling across four regions in Myanmar. A census of community health workers (CHWs) and private outlets with potential to distribute malaria testing and/or treatment was conducted...
April 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28438169/ivermectin-and-malaria-control
#3
Satoshi Ōmura, Andy Crump
As the world begins to realize the very real prospect of eliminating malaria as a public health problem globally, the scientific community is acutely aware that novel and innovative new tools will be required if that lofty goal is to be accomplished. Moreover, the need for comprehensive, integrated products and interventions is being recognized in order for the critical 'final steps' toward elimination to be taken successfully. Failure to take these crucial last steps have dogged all past global disease elimination programmes, except for smallpox...
April 24, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28438159/prevalence-of-plasmodium-falciparum-and-non-p-falciparum-infections-in-a-highland-district-in-ghana-and-the-influence-of-hiv-and-sickle-cell-disease
#4
Ewurama D A Owusu, Charles A Brown, Martin P Grobusch, Petra Mens
BACKGROUND: In the past two decades, there has been a reported decline in malaria in Ghana and the rest of the world; yet it remains the number one cause of mortality and morbidity. Human immuno-deficiency virus (HIV) and sickle cell disease (SCD) share a common geographical space with malaria in sub-Saharan Africa and an interaction between these three conditions has been suggested. This study determined the Plasmodium falciparum and non-P. falciparum status of symptomatic and non-symptomatic residents of Mpraeso in the highlands of Kwahu-South district of Ghana based on evidence of current national decline...
April 24, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28438155/the-malaria-testing-and-treatment-landscape-in-the-southern-lao-people-s-democratic-republic-pdr
#5
Saysana Phanalasy
BACKGROUND: In the context of national and regional goals to eliminate malaria by 2030, the Center for Malaria Parasitology and Entomology in the Lao PDR is implementing strategies to ensure all malaria cases are detected and appropriately treated with first-line artemisinin combination therapy, artemether-lumefantrine (AL). Timely and relevant evidence to inform policies and strategies is needed to ensure the most effective and efficient use of resources, and to accelerate progress towards elimination goals...
April 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28438145/insights-into-the-availability-and-distribution-of-oral-artemisinin-monotherapy-in-myanmar-evidence-from-a-nationally-representative-outlet-survey
#6
Si Thu Thein, Hnin Su Su Khin, Aung Thi
BACKGROUND: The containment of artemisinin resistance in Myanmar, historically an important probable origin and route of anti-malarial resistance to the India sub-continent and beyond, is crucial to global malaria control and elimination. This paper describes what is currently known about the sale and distribution of oral artemisinin monotherapy (AMT) across Myanmar, where this medicine is commonly found. METHODS: A nationally representative 2015 outlet survey was conducted in the private sector, and among community health workers across four geographical domains...
April 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28427418/immunity-as-a-predictor-of-anti-malarial-treatment-failure-a-systematic-review
#7
Katherine O'Flaherty, Julia Maguire, Julie A Simpson, Freya J I Fowkes
BACKGROUND: Naturally acquired immunity can reduce parasitaemia and potentially influence anti-malarial treatment outcomes; however, evidence for this in the current literature provides conflicted results. The available evidence was synthesized to determine and quantify the association between host immunity and anti-malarial treatment failure. METHODS: Four databases were searched to identify studies investigating malaria antibody levels in patients receiving anti-malarial treatment for symptomatic malaria with treatment failure recorded according to the World Health Organization classification...
April 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28427365/association-between-fc%C3%AE-receptor-iia-iiia-and-iiib-genetic-polymorphisms-and-susceptibility-to-severe-malaria-anemia-in-children-in-western-kenya
#8
Elly O Munde, Winnie A Okeyo, Evans Raballah, Samuel B Anyona, Tom Were, John M Ong'echa, Douglas J Perkins, Collins Ouma
BACKGROUND: Naturally-acquired immunity to Plasmodium falciparum malaria develops after several episodes of infection. Fc gamma receptors (FcγRs) bind to immunoglobulin G (IgG) antibodies and mediate phagocytosis of opsonized microbes, thereby, linking humoral and cellular immunity. FcγR polymorphisms influence binding affinity to IgGs and consequently, can influence clinical malaria outcomes. Specifically, variations in FcγRIIA -131Arg/His, FcγRIIIA-176F/V and FcγRIIIB-NA1/NA2 modulate immune responses through altered binding preferences to IgGs and immune complexes...
April 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28427357/haplotype-of-non-synonymous-mutations-within-il-23r-is-associated-with-susceptibility-to-severe-malaria-anemia-in-a-p-falciparum-holoendemic-transmission-area-of-kenya
#9
Elly O Munde, Evans Raballah, Winnie A Okeyo, John M Ong'echa, Douglas J Perkins, Collins Ouma
BACKGROUND: Improved understanding of the molecular mechanisms involved in pediatric severe malarial anemia (SMA) pathogenesis is a crucial step in the design of novel therapeutics. Identification of host genetic susceptibility factors in immune regulatory genes offers an important tool for deciphering malaria pathogenesis. The IL-23/IL-17 immune pathway is important for both immunity and erythropoiesis via its effects through IL-23 receptors (IL-23R). However, the impact of IL-23R variants on SMA has not been fully elucidated...
April 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28426727/cd4-t-cell-expression-of-ifn-%C3%AE-and-il-17-in-pediatric-malarial-anemia
#10
Evans Raballah, Prakasha Kempaiah, Zachary Karim, George O Orinda, Michael F Otieno, Douglas J Perkins, John Michael Ong'echa
In Plasmodium falciparum holoendemic transmission regions of western Kenya, life-threatening pediatric malaria manifests primarily as severe malarial anemia (SMA, Hb≤6.0 g/dL with any density parasitemia). To determine the role that CD4+ T-cell-driven inflammatory responses have in the pathogenesis of SMA, peripheral CD4+ T-cell populations and their intracellular production of pro-inflammatory cytokines (IFN-γ and IL-17) were characterized in children aged 12-36 months of age stratified into two groups: non-severe malarial anemia (non-SMA, Hb≥6...
2017: PloS One
https://www.readbyqxmd.com/read/28422980/genetic-and-epigenetic-changes-in-host-abcb1-influences-malaria-susceptibility-to-plasmodium-falciparum
#11
Himanshu Gupta, Sima Chaudhari, Ayushi Rai, Smitha Bhat, Pratima K Sahu, Manjunath H Hande, Sydney C D'Souza, Umakanth Shashikiran, Kapaettu Satyamoorthy
Multiple mechanisms such as genetic and epigenetic variations within a key gene may play a role in malarial susceptibility and response to anti-malarial drugs in the population. ABCB1 is one of the well-studied membrane transporter genes that code for the P-glycoprotein (an efflux protein) and whose effect on malaria disease predisposition and susceptibility to drugs remains to be understood. We studied the association of single nucleotide variations in human ABCB1 that influences its function in subjects with uncomplicated and complicated malaria caused by Plasmodium falciparum (Pf)...
2017: PloS One
https://www.readbyqxmd.com/read/28420422/high-resolution-melting-a-useful-field-deployable-method-to-measure-dhfr-and-dhps-drug-resistance-in-both-highly-and-lowly-endemic-plasmodium-populations
#12
Yaye Dié Ndiaye, Cyrille K Diédhiou, Amy K Bei, Baba Dieye, Aminata Mbaye, Nasserdine Papa Mze, Rachel F Daniels, Ibrahima M Ndiaye, Awa B Déme, Amy Gaye, Mouhamad Sy, Tolla Ndiaye, Aida S Badiane, Mouhamadou Ndiaye, Zul Premji, Dyann F Wirth, Souleymane Mboup, Donald Krogstad, Sarah K Volkman, Ambroise D Ahouidi, Daouda Ndiaye
BACKGROUND: Emergence and spread of drug resistance to every anti-malarial used to date, creates an urgent need for development of sensitive, specific and field-deployable molecular tools for detection and surveillance of validated drug resistance markers. Such tools would allow early detection of mutations in resistance loci. The aim of this study was to compare common population signatures and drug resistance marker frequencies between two populations with different levels of malaria endemicity and history of anti-malarial drug use: Tanzania and Sénégal...
April 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28420403/molecular-surveillance-of-plasmodium-falciparum-drug-resistance-in-the-republic-of-congo-four-and-nine-years-after-the-introduction-of-artemisinin-based-combination-therapy
#13
Felix Koukouikila-Koussounda, Sankarganesh Jeyaraj, Christian N Nguetse, Charles Nchotebah Nkonganyi, Kossiwa Clarisse Kokou, Mandingha K Etoka-Beka, Francine Ntoumi, Thirumalaisamy P Velavan
BACKGROUND: Resistance to anti-malarial drugs hinders efforts on malaria elimination and eradication. Following the global spread of chloroquine-resistant parasites, the Republic of Congo adopted artemisinin-based combination therapy (ACT) in 2006 as a first-line treatment for uncomplicated malaria. To assess the impacts after implementation of ACT, a molecular surveillance for anti-malarial drug resistance was conducted in Congo 4 and 9 years after the introduction of ACT. METHODS: Blood samples of 431 febrile children aged 1-10 years were utilized from two previous studies conducted in 2010 (N = 311) and 2015 (N = 120)...
April 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28420400/erratum-to-new-developments-in-anti-malarial-target-candidate-and-product-profiles
#14
Jeremy N Burrows, Stephan Duparc, Winston E Gutteridge, Rob Hooft van Huijsduijnen, Wiweka Kaszubska, Fiona Macintyre, Sébastien Mazzuri, Jörg J Möhrle, Timothy N C Wells
No abstract text is available yet for this article.
April 18, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28420389/assessment-of-copy-number-variation-in-genes-related-to-drug-resistance-in-plasmodium-vivax-and-plasmodium-falciparum-isolates-from-the-brazilian-amazon-and-a-systematic-review-of-the-literature
#15
Gabriel Luíz Costa, Lara Cotta Amaral, Cor Jesus Fernandes Fontes, Luzia Helena Carvalho, Cristiana Ferreira Alves de Brito, Taís Nóbrega de Sousa
BACKGROUND: Parasite resistance to anti-malarials represents a great obstacle for malaria elimination. The majority of studies have investigated the association between single-nucleotide polymorphisms (SNPs) and drug resistance; however, it is becoming clear that the copy number variation (CNV) is also associated with this parasite phenotype. To provide a baseline for molecular surveillance of anti-malarial drug resistance in the Brazilian Amazon, the present study characterized the genetic profile of both markers in the most common genes associated with drug resistance in Plasmodium falciparum and Plasmodium vivax isolates...
April 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28411684/in-vivo-antimalarial-activity-of-synthetic-hepcidin-against-plasmodium-berghei-in-mice
#16
Ya-Qun Fang, Chuan-Bin Shen, Ning Luan, Hui-Min Yao, Chen-Bo Long, Ren Lai, Xiu-Wen Yan
The present study was designed to investigate the antimalarial activity of synthetic hepcidin and its effect on cytokine secretion in mice infected with Plasmodium berghei. The mice were infected with P. berghei intravenously and treated with hepcidin according to 4-day suppression test and Rane's test. The serum levels of interleukins (IL-1β, IL-2, IL-6, IL-10, IL-12p70, and IL-17A), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) in the experimental mice were determined using a cytometric bead array (CBA) kit...
March 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28407772/the-end-of-a-dogma-the-safety-of-doxycycline-use-in-young-children-for-malaria-treatment
#17
REVIEW
Tiphaine Gaillard, Sébastien Briolant, Marylin Madamet, Bruno Pradines
Anti-malarial drug resistance to chloroquine and sulfadoxine-pyrimethamine has spread from Southeast Asia to Africa. Furthermore, the recent emergence of resistance to artemisinin-based combination therapy (ACT) in Southeast Asia highlights the need to identify new anti-malarial drugs. Doxycycline is recommended for malaria chemoprophylaxis for travel in endemic areas, or in combination with the use of quinine for malaria treatment when ACT is unavailable or when the treatment of severe malaria with artesunate fails...
April 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28407766/novel-lead-structures-with-both-plasmodium-falciparum-gametocytocidal-and-asexual-blood-stage-activity-identified-from-high-throughput-compound-screening
#18
Wei Sun, Xiuli Huang, Hao Li, Gregory Tawa, Ethan Fisher, Takeshi Q Tanaka, Paul Shinn, Wenwei Huang, Kim C Williamson, Wei Zheng
BACKGROUND: Blocking malaria transmission is an important step in eradicating malaria. In the field, transmission requires the production of sexual stage Plasmodium parasites, called gametocytes, which are not effectively killed by the commonly used anti-malarials allowing individuals to remain infectious after clearance of asexual parasites. METHODS: To identify new gametocytocidal compounds, a library of 45,056 compounds with diverse structures was screened using a high throughput gametocyte viability assay...
April 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28406330/precarity-and-preparedness-non-adherence-as-institutional-work-in-diagnosing-and-treating-malaria-in-uganda
#19
René Umlauf
Access to anti-malarial drugs is increasingly governed by novel regulation technologies like Rapid Diagnostic Tests (RDTs). However, high-rates of non-adherence particularly to negative RDT results have been reported, threatening the cost-effectiveness of the two interrelated goals of improving diagnosis and reducing the over-prescription of expensive anti-malarial drugs. Below I set out to reconstruct prior treatment forms like presumptive treatment of malaria by paying particular attention to their institutional groundings...
April 13, 2017: Medical Anthropology
https://www.readbyqxmd.com/read/28404504/burden-of-asymptomatic-malaria-among-a-tribal-population-in-a-forested-village-of-central-india-a%C3%A2-hidden-challenge-for-malaria-control-in-india
#20
M K Chourasia, K Raghavendra, R M Bhatt, D K Swain, N Valecha, I Kleinschmidt
OBJECTIVE: Chhattisgarh in India is a malaria-endemic state with seven southern districts that contributes approximately 50-60% of the reported malaria cases in the state every year. The problem is further complicated due to asymptomatic malaria cases which are largely responsible for persistent transmission. This study was undertaken in one of the forested villages of the Keshkal subdistrict in Kondagaon district to ascertain the proportion of the population harbouring subclinical malarial infections...
March 21, 2017: Public Health
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