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Malaria Journal

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https://www.readbyqxmd.com/read/28103889/heterogeneity-of-g6pd-deficiency-prevalence-in-mozambique-a-school-based-cross-sectional-survey-in-three-different-regions
#1
Beatriz Galatas, Lurdes Mabote, Wilson Simone, Gloria Matambisso, Lidia Nhamussua, María Del Mar Mañú-Pereira, Clara Menéndez, Francisco Saute, Eusebio Macete, Quique Bassat, Pedro Alonso, Pedro Aide
BACKGROUND: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an X-linked hereditary enzymatic abnormality that affects more than 400 million people worldwide. Most deficient individuals do not manifest any symptoms; however, several precipitant agents-such as fava intake, infections, or several drugs-may trigger acute haemolytic anaemia. Countries should be informed of the prevalence of this enzymatic anomaly within their borders, in order to make safe and appropriate national decisions regarding the use of potentially unsafe drugs for G6PD deficient individuals...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28103883/performance-of-loop-mediated-isothermal-amplification-lamp-for-the-diagnosis-of-malaria-among-malaria-suspected-pregnant-women-in-northwest-ethiopia
#2
Banchamlak Tegegne, Sisay Getie, Wossenseged Lemma, Abu Naser Mohon, Dylan R Pillai
BACKGROUND: Malaria is a major public health problem and an important cause of maternal and infant morbidity in sub-Saharan Africa, including Ethiopia. Early and accurate diagnosis of malaria with effective treatment is the best strategy for prevention and control of complications during pregnancy and infant morbidity and mortality. However, laboratory diagnosis has relied on the identification of malaria parasites and parasite antigens in peripheral blood using Giemsa-stained microscopy or rapid diagnostic tests (RDTs) which lack analytical and clinical sensitivity...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28103875/effects-of-plasmodium-falciparum-infection-on-umbilical-artery-resistance-and-intrafetal-blood-flow-distribution-a-doppler-ultrasound-study-from-papua-new-guinea
#3
Maria Ome-Kaius, Stephan Karl, Regina Alice Wangnapi, John Walpe Bolnga, Glen Mola, Jane Walker, Ivo Mueller, Holger Werner Unger, Stephen John Rogerson
BACKGROUND: Doppler velocimetry studies of umbilical artery (UA) and middle cerebral artery (MCA) flow help to determine the presence and severity of fetal growth restriction. Increased UA resistance and reduced MCA pulsatility may indicate increased placental resistance and intrafetal blood flow redistribution. Malaria causes low birth weight and fetal growth restriction, but few studies have assessed its effects on uteroplacental and fetoplacental blood flow. METHODS: Colour-pulsed Doppler ultrasound was used to assess UA and MCA flow in 396 Papua New Guinean singleton fetuses...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28100237/surveillance-and-response-for-high-risk-populations-what-can-malaria-elimination-programmes-learn-from-the-experience-of-hiv
#4
REVIEW
Jerry O Jacobson, Carmen Cueto, Jennifer L Smith, Jimee Hwang, Roly Gosling, Adam Bennett
To eliminate malaria, malaria programmes need to develop new strategies for surveillance and response appropriate for the changing epidemiology that accompanies transmission decline, in which transmission is increasingly driven by population subgroups whose behaviours place them at increased exposure. Conventional tools of malaria surveillance and response are likely not sufficient in many elimination settings for accessing high-risk population subgroups, such as mobile and migrant populations (MMPs), given their greater likelihood of asymptomatic infections, illegal risk behaviours, limited access to public health facilities, and high mobility including extended periods travelling away from home...
January 18, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28095916/insecticide-treated-net-effectiveness-at-preventing-plasmodium-falciparum-infection-varies-by-age-and-season
#5
Andrea G Buchwald, Jenna E Coalson, Lauren M Cohee, Jenny A Walldorf, Nelson Chimbiya, Andy Bauleni, Kondwani Nkanaunena, Andrew Ngwira, John D Sorkin, Don P Mathanga, Terrie E Taylor, Miriam K Laufer
BACKGROUND: After increasing coverage of malaria interventions, malaria prevalence remains high in Malawi. Previous studies focus on the impact of malaria interventions among children under 5 years old. However, in Malawi, the prevalence of infection is highest in school-aged children (SAC), ages 5 to 15 years. This study examined the interaction between age group and insecticide-treated net (ITN) use for preventing individual and community-level infection in Malawi. METHODS: Six cross-sectional surveys were conducted in the rainy and dry seasons in southern Malawi from 2012 to 2014...
January 17, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28095873/physical-integrity-and-residual-bio-efficacy-of-used-llins-in-three-cities-of-the-south-west-region-of-cameroon-4%C3%A2-years-after-the-first-national-mass-distribution-campaign
#6
Stravensky T Boussougou-Sambe, Parfait Awono-Ambene, Geraud C T Tasse, Josiane Etang, Jerome A Binyang, Lynda D Nouage, Gaston Wamba, Peter Enyong, Eric B Fokam
BACKGROUND: Long-lasting insecticidal nets (LLINs) are effective tools at reducing malaria transmission. In Cameroon, following the first national mass distribution campaign in 2011, there has been no follow up on the efficacy of LLINs distributed. The aim of this report is to assess the physical integrity and insecticidal potency of LLINs distributed in three cities with contrasting socio economic status (SES) and to evaluate the use and care for bed nets owned by individuals. METHODS: The study was conducted in Limbe, Tiko and Buea three localities in the Fako division of the South West Region of Cameroon...
January 17, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086874/new-developments-in-anti-malarial-target-candidate-and-product-profiles
#7
REVIEW
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
A decade of discovery and development of new anti-malarial medicines has led to a renewed focus on malaria elimination and eradication. Changes in the way new anti-malarial drugs are discovered and developed have led to a dramatic increase in the number and diversity of new molecules presently in pre-clinical and early clinical development. The twin challenges faced can be summarized by multi-drug resistant malaria from the Greater Mekong Sub-region, and the need to provide simplified medicines. This review lists changes in anti-malarial target candidate and target product profiles over the last 4 years...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086789/detection-of-plasmodium-knowlesi-plasmodium-falciparum-and-plasmodium-vivax-using-loop-mediated-isothermal-amplification-lamp-in-a-co-endemic-area-in-malaysia
#8
Kim A Piera, Ammar Aziz, Timothy William, David Bell, Iveth J González, Bridget E Barber, Nicholas M Anstey, Matthew J Grigg
BACKGROUND: Plasmodium knowlesi is the most common cause of malaria in Malaysia. However, microscopic diagnosis is inaccurate and rapid diagnostic tests (RDTs) are insufficiently sensitive. PCR is sensitive and specific but not feasible at a district level. Loop-mediated isothermal amplification (LAMP) shows potential with only basic requirements. A commercially available LAMP assay, the Eiken Loopamp™ MALARIA Pan Detection kit, is sensitive for Plasmodium falciparum and Plasmodium vivax, but has not previously been evaluated for P...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086782/in-vivo-antiplasmodial-activity-and-toxicological-assessment-of-hydroethanolic-crude-extract-of-ajuga-remota
#9
Aschalew Nardos, Eyasu Makonnen
BACKGROUND: Malaria is one of the most life-threatening health problems worldwide and treatment has been compromised by drug resistance. Identifying lead molecules from natural products might help to find better anti-malarial drugs, since those obtained from natural sources are still effective against malarial parasites. This study aimed at investigating the in vivo antiplasmodial activity of crude extract of the leaves of Ajuga remota together with its safety in mice models. METHODS: In vivo parasite growth inhibitory effect of crude extract was assessed in mice inoculated with Plasmodium berghei (ANKA strain)...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086777/profile-of-molecular-mutations-in-pfdhfr-pfdhps-pfmdr1-and-pfcrt-genes-of-plasmodium-falciparum-related-to-resistance-to-different-anti-malarial-drugs-in-the-bata-district-equatorial-guinea
#10
Pedro Berzosa, Andrés Esteban-Cantos, Luz García, Vicenta González, Marisa Navarro, Taiomara Fernández, María Romay-Barja, Zaida Herrador, José Miguel Rubio, Policarpo Ncogo, María Santana-Morales, Basilio Valladares, Matilde Riloha, Agustín Benito
BACKGROUND: The emergence of drug resistance in Plasmodium falciparum has been a major contributor to the global burden of malaria. Drug resistance complicates treatment, and it is one of the most important problems in malaria control. This study assessed the level of mutations in P. falciparum genes, pfdhfr, pfdhps, pfmdr1, and pfcrt, related to resistance to different anti-malarial drugs, in the Continental Region of Equatorial Guinea, after 8 years of implementing artesunate combination therapies as the first-line treatment...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086776/comparison-of-two-adult-mosquito-sampling-methods-with-human-landing-catches-in-south-central-ethiopia
#11
Oljira Kenea, Meshesha Balkew, Habte Tekie, Teshome Gebre-Michael, Wakgari Deressa, Eskindir Loha, Bernt Lindtjørn, Hans J Overgaard
BACKGROUND: The human landing catch (HLC) is the standard reference method for measuring human exposure to mosquito bites. However, HLC is labour-intensive, exposes collectors to infectious mosquito bites and is subjected to collector bias. These necessitate local calibration and application of alternative methods. This study was undertaken to determine the relative sampling efficiency (RSE) of light traps with or without yeast-produced carbon dioxide bait vs. HLC in south-central Ethiopia...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28086775/rapid-decline-in-the-susceptibility-of-plasmodium-falciparum-to-dihydroartemisinin-piperaquine-in-the-south-of-vietnam
#12
Ngo Viet Thanh, Nguyen Thuy-Nhien, Nguyen Thi Kim Tuyen, Nguyen Thanh Tong, Nguyen Thuy Nha-Ca, Le Thanh Dong, Huynh Hong Quang, Jeremy Farrar, Guy Thwaites, Nicholas J White, Marcel Wolbers, Tran Tinh Hien
BACKGROUND: Artemisinin resistant Plasmodium falciparum has emerged in the countries of the Greater Mekong sub-region posing a serious threat to global malaria elimination efforts. The relationship of artemisinin resistance to treatment failure has been unclear. METHODS: In annual studies conducted in three malaria endemic provinces in the south of Vietnam (Binh Phuoc, Ninh Thuan and Gia Lai) between 2011 and 2015, 489 patients with uncomplicated P. falciparum malaria were enrolled in detailed clinical, parasitological and molecular therapeutic response assessments with 42 days follow up...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28077149/plasmodium-falciparum-malaria-co-infection-with-tick-borne-relapsing-fever-in-dakar
#13
Mamadou A Diallo, Baidy S Kane, Mouhamadou Ndiaye, Mouhamed Dieng, Khadim Diongue, Aida S Badiane, Mame Cheikh Seck, Daouda Ndiaye
BACKGROUND: West African tick-borne relapsing fever (TBRF) due to Borrelia crocidurae and malaria are co-endemics in Senegal. Although expected to be high, co-infections are rarely reported. A case of falciparum malaria and B. crocidurae co-infection in a patient from Velingara (South of Senegal) is discussed. CASE: A 28 year-old-male patient presented to Aristide Le Dantec Hospital for recurrent fever. He initially presented to a local post health of Pikine (sub-urban of Dakar) and was diagnosed for malaria on the basis of positive malaria rapid diagnostic test (RDT) specific to Plamodium falciparum...
January 11, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28069024/efficient-method-for-establishing-f1-progeny-from-wild-populations-of-anopheles-mosquitoes
#14
Thiery N Nepomichene, Lala Andrianaivolambo, Sébastien Boyer, Catherine Bourgouin
BACKGROUND: The changing malaria situation in Madagascar requires additional knowledge on the physiology and behaviour of local mosquito vectors. However, the absence of established colonies for several anopheline species present in Madagascar constitutes a limiting factor. To avoid labour intensive work and uncertainty for success of establishing Anopheles colonies from Malagasy species, field collections of blood-fed females and in-tube forced oviposition were combined to reliably produce large numbers of F1 progeny...
January 9, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28068997/absence-of-in-vivo-selection-for-k13-mutations-after-artemether-lumefantrine-treatment-in-uganda
#15
Betty Balikagala, Toshihiro Mita, Mie Ikeda, Miki Sakurai, Shouki Yatsushiro, Nobuyuki Takahashi, Shin-Ichiro Tachibana, Mary Auma, Edward H Ntege, Daisuke Ito, Eizo Takashima, Nirianne Marie Q Palacpac, Thomas G Egwang, Joseph Okello Onen, Masatoshi Kataoka, Eisaku Kimura, Toshihiro Horii, Takafumi Tsuboi
BACKGROUND: Individual drug treatment may select resistant parasites in the human body, a process termed in vivo selection. Some single nucleotide polymorphisms in Plasmodium falciparum chloroquine-resistance transporter (pfcrt) and multidrug resistance gene 1 (pfmdr1) genes have been reportedly selected after artemether-lumefantrine treatment. However, there is a paucity of data regarding in vivo selection of P. falciparum Kelch propeller domain (pfkelch13) polymorphisms, responsible for artemisinin-resistance in Asia, and six putative background mutations for artemisinin resistance; D193Y in ferredoxin, T484I in multiple resistance protein 2, V127M in apicoplast ribosomal protein S10, I356T in pfcrt, V1157L in protein phosphatase and C1484F in phosphoinositide-binding protein...
January 9, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28068989/long-lasting-insecticidal-net-llin-ownership-use-and-cost-of-implementation-after-a-mass-distribution-campaign-in-kasa%C3%A3-occidental-province-democratic-republic-of-congo
#16
Henry Maggi Ntuku, Laura Ruckstuhl, Jean-Emmanuel Julo-Réminiac, Solange E Umesumbu, Alain Bokota, Antoinette Kitoto Tshefu, Christian Lengeler
BACKGROUND: Long-lasting insecticidal nets (LLIN) are a highly effective means for preventing malaria infection and reducing associated morbidity and mortality. Mass free distribution campaigns have been shown to rapidly increase LLIN ownership and use. Around 3.5 million LLINs were distributed free of charge in the Kasaï Occidental Province in the Democratic Republic of Congo (DRC) in September-October 2014, using two different approaches, a fixed delivery strategy and a door-to-door strategy including hang-up activities...
January 9, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28061871/lamp-kit-for-diagnosis-of-non-falciparum-malaria-in-plasmodium-ovale-infected-patients
#17
Juan Cuadros, Alexandra Martin Ramírez, Iveth J González, Xavier C Ding, Ramon Perez Tanoira, Gerardo Rojo-Marcos, Peña Gómez-Herruz, Jose Miguel Rubio
BACKGROUND: Microscopy and rapid diagnosis tests have a limited sensitivity in diagnosis of malaria by Plasmodium ovale. The LAMP kit (LoopAMP®) can be used in the field without special equipment and could have an important role in malaria control programmes in endemic areas and for malaria diagnosis in returned travellers. The performance of the Pan primer of the kit in detecting malaria by P. ovale was compared with the results of standard nPCR in samples of patients returning from P...
January 7, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28061851/the-perception-of-parents-and-teachers-about-intermittent-preventive-treatment-for-malaria-in-school-children-in-a-semi-rural-area-of-kinshasa-in-the-democratic-republic-of-congo
#18
Junior R Matangila, Jessica Fraeyman, Marie-Louise Mbula Kambulu, Alain Mpanya, Raquel Inocêncio da Luz, Pascal Lutumba, Jean-Pierre Van Geertruyden, Hilde Bastiaens
BACKGROUND: Intermittent preventive treatment (IPT) is likely to be the most promising therapeutic strategy to prevent malaria and its related adverse outcomes in schoolchildren. However, its successful implementation will depend on acceptability to key stakeholders such as parents and teachers. METHODS: A qualitative research was conducted, following a clinical trial assessing the effectiveness of IPT in schoolchildren (IPTsc), to understand the perceptions and experiences of parents and teachers with IPTsc, in two schools of Mokali, in Kinshasa, Democratic Republic of the Congo...
January 7, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28061908/community-perceptions-of-targeted-anti-malarial-mass-drug-administrations-in-two-provinces-in-vietnam-a-quantitative-survey
#19
Thuy-Nhien Nguyen, Pham N Huong Thu, Ngo Trong Hung, Do Hung Son, Nguyen Thanh Tien, Nguyen Van Dung, Huynh Hong Quang, Lorenz von Seidlein, Phaik Yeong Cheah, Arjen M Dondorp, Nicholas P J Day, Nicholas J White, Tran Tinh Hien
BACKGROUND: As part of a targeted malaria elimination project, mass drug administrations (MDAs) were conducted in Vietnam. The impact of MDAs on malaria transmission depends largely on the efficacy of the anti-malarial drug regimen, the malaria epidemiology in the site and the population coverage. To explore why some people participate in MDAs and others do not, a quantitative survey of the villagers' perceptions was undertaken in Vietnam. METHODS: In 2013/2014 MDAs were conducted in a village in Binh Phuoc province and a village in Ninh Thuan province...
January 6, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28061853/location-location-location-environmental-factors-better-predict-malaria-positive-individuals-during-reactive-case-detection-than-index-case-demographics-in-southern-province-zambia
#20
David A Larsen, Tokozile Ngwenya-Kangombe, Sanford Cheelo, Busiku Hamainza, John Miller, Anna Winters, Daniel J Bridges
BACKGROUND: Decreasing malaria transmission leads to increasing heterogeneity with increased risk in both hot spots (locations) and hot pops (certain demographics). In Southern Province, Zambia, reactive case detection has formed a part of malaria surveillance and elimination efforts since 2011. Various factors may be associated with finding malaria infections during case investigations, including the demographics of the incident case and environmental characteristics of the location of the incident case...
January 6, 2017: Malaria Journal
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