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Malaria Journal

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https://www.readbyqxmd.com/read/27919257/global-priorities-for-research-and-the-relative-importance-of-different-research-outcomes-an-international-delphi-survey-of-malaria-research-experts
#1
Jo-Ann Mulligan, Lesong Conteh
BACKGROUND: As global research investment increases, attention inevitably turns to assessing and measuring the outcomes and impact from research programmes. Research can have many different outcomes such as producing advances in scientific knowledge, building research capacity and, ultimately, health and broader societal benefits. The aim of this study was to test the use of a Delphi methodology as a way of gathering views from malaria research experts on research priorities and eliciting relative valuations of the different types of health research impact...
December 6, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27919256/the-return-of-chloroquine-susceptible-plasmodium-falciparum-malaria-in-zambia
#2
Sydney Mwanza, Sudhaunshu Joshi, Michael Nambozi, Justin Chileshe, Phidelis Malunga, Jean-Bertin Bukasa Kabuya, Sebastian Hachizovu, Christine Manyando, Modest Mulenga, Miriam Laufer
BACKGROUND: Plasmodium falciparum resistance to anti-malarial drugs remains a major obstacle to malaria control and elimination. The parasite has developed resistance to every anti-malarial drug introduced for wide-scale treatment. However, the spread of resistance may be reversible. Malawi was the first country to discontinue chloroquine use due to widespread resistance. Within a decade of the removal of drug pressure, the molecular marker of chloroquine-resistant malaria had disappeared and the drug was shown to have excellent clinical efficacy...
December 5, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27912758/emerging-polymorphisms-in-falciparum-kelch-13-gene-in-northeastern-region-of-india
#3
Neelima Mishra, Ram Suresh Bharti, Prashant Mallick, Om Prakash Singh, Bina Srivastava, Roma Rana, Sobhan Phookan, Hardev Prasad Gupta, Pascal Ringwald, Neena Valecha
BACKGROUND: Recent reports of emergence and spread of artemisinin resistance in the Southeast Asia region, including Myanmar, pose a greater threat to malaria control and elimination in India. Whole genome sequencing studies have associated mutations in the K13 propeller gene (k13), PF3D7_1343700 with artemisinin resistance both in vitro and in vivo. The aim of the present study was to find the k13 gene polymorphisms in Plasmodium falciparum parasites from the three sites in the Northeast region of India, bordering Bangladesh and Myanmar...
December 3, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27905928/perceptions-on-the-effect-of-small-electric-fans-on-comfort-inside-bed-nets-in-southern-ghana-a-qualitative-study
#4
Mulako S Jaeger, Olivier J T Briët, Joseph Keating, Collins K Ahorlu, Joshua O Yukich, Samuel Oppong, Peter Nardini, Constanze Pfeiffer
BACKGROUND: Long-lasting insecticidal nets (LLINs) are known to be highly effective in reducing malaria transmission, morbidity and mortality. However, among those owning an LLIN, use rates are often suboptimal. A reported barrier to bed net use is discomfort due to heat. This qualitative study was part of a larger evaluation conducted in communities without electricity in rural Ghana to assess whether 0.8 W solar powered net fans can increase net use. METHODS: Twenty-three key informant interviews with household heads in the study communities in Shai-Osudoku District, southern Ghana, were conducted from July to August 2015...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27905921/systematic-review-of-the-role-of-angiopoietin-1-and-angiopoietin-2-in-plasmodium-species-infections-biomarkers-or-therapeutic-targets
#5
Gerdie M de Jong, Jasper J Slager, Annelies Verbon, Jaap J van Hellemond, Perry J J van Genderen
BACKGROUND: Levels of both angiopoietin-1 (Ang-1) and angiopoietin-2 (Ang-2) correlate with malaria disease severity and are proposed as biomarkers and possible therapeutic targets. To establish their role in malaria, a systematic review was performed of the literature on Ang-1 and Ang-2 with regard to their potential as biomarkers in malaria and discuss their possible place in adjuvant treatment regimens. METHODS: Ten electronic databases were systematically searched to identify studies investigating Ang-1 and Ang-2 in human and murine malaria in both clinical and experimental settings...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27905919/susceptibility-of-anopheles-gambiae-to-insecticides-used-for-malaria-vector-control-in-rwanda
#6
Emmanuel Hakizimana, Corine Karema, Dunia Munyakanage, Gad Iranzi, John Githure, Jon Eric Tongren, Willem Takken, Agnes Binagwaho, Constantianus J M Koenraadt
BACKGROUND: The widespread emergence of resistance to pyrethroids is a major threat to the gains made in malaria control. To monitor the presence and possible emergence of resistance against a variety of insecticides used for malaria control in Rwanda, nationwide insecticide resistance surveys were conducted in 2011 and 2013. METHODS: Larvae of Anopheles gambiae sensu lato mosquitoes were collected in 12 sentinel sites throughout Rwanda. These were reared to adults and analysed for knock-down and mortality using WHO insecticide test papers with standard diagnostic doses of the recommended insecticides...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27903292/evaluation-of-long-lasting-microbial-larvicide-for-malaria-vector-control-in-kenya
#7
Yaw A Afrane, Nixon G Mweresa, Christine L Wanjala, Thomas M Gilbreath Iii, Guofa Zhou, Ming-Chieh Lee, Andrew K Githeko, Guiyun Yan
BACKGROUND: Outdoor malaria transmission is becoming an increasingly important problem in malaria control in Africa. Larval control is a promising intervention as it can target both indoor and outdoor biting mosquitoes. However, the currently available biolarvicide formulations have a short effective duration, and consequently larval control incurs a high operational expense due to the requirement for frequent re-treatment of larval habitats. Formulations of biolarvicides with long-lasting effects is highly desired...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27903279/in-vitro-and-in-vivo-anti-malarial-activity-of-novel-harmine-analog-heat-shock-protein-90-inhibitors-a-possible-partner-for-artemisinin
#8
Abebe Genetu Bayih, Asongna Folefoc, Abu Naser Mohon, Scott Eagon, Marc Anderson, Dylan R Pillai
BACKGROUND: The emergence of artemisinin-resistant Plasmodium falciparum strains poses a serious challenge to the control of malaria. This necessitates the development of new anti-malarial drugs. Previous studies have shown that the natural beta-carboline alkaloid harmine is a promising anti-malarial agent targeting the P. falciparum heat-shock protein 90 (PfHsp90). The aim of this study was to test the anti-malarial activity of harmine analogues. METHODS: Forty-two harmine analogues were synthesized and the binding of these analogues to P...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27903266/environmental-determinants-of-malaria-transmission-in-african-villages
#9
Noriko Endo, Elfatih A B Eltahir
BACKGROUND: Malaria transmission is complex, involving a range of hydroclimatological, biological, and environmental processes. The high degree of non-linearity in these processes makes it difficult to predict and intervene against malaria. This study seeks both to define a minimal number of malaria transmission determinants, and to provide a theoretical basis for sustainable environmental manipulation to prevent malaria transmission. METHODS: Using a field-tested mechanistic malaria model, HYDREMATS, a theoretical study was conducted under hypothetical conditions...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27899115/characterizing-the-impact-of-sustained-sulfadoxine-pyrimethamine-use-upon-the-plasmodium-falciparum-population-in-malawi
#10
Matt Ravenhall, Ernest Diez Benavente, Mwapatsa Mipando, Anja T R Jensen, Colin J Sutherland, Cally Roper, Nuno Sepúlveda, Dominic P Kwiatkowski, Jacqui Montgomery, Kamija S Phiri, Anja Terlouw, Alister Craig, Susana Campino, Harold Ocholla, Taane G Clark
BACKGROUND: Malawi experienced prolonged use of sulfadoxine/pyrimethamine (SP) as the front-line anti-malarial drug, with early replacement of chloroquine and delayed introduction of artemisinin-based combination therapy. Extended use of SP, and its continued application in pregnancy is impacting the genomic variation of the Plasmodium falciparum population. METHODS: Whole genome sequence data of P. falciparum isolates covering 2 years of transmission within Malawi, alongside global datasets, were used...
November 29, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27899111/plasmodium-malariae-in-the-colombian-amazon-region-you-don-t-diagnose-what-you-don-t-suspect
#11
Carlos Hernando Niño, Juan Ricardo Cubides, Paola Andrea Camargo-Ayala, Carlos Arturo Rodríguez-Celis, Teódulo Quiñones, Moisés Tomás Cortés-Castillo, Lizeth Sánchez-Suárez, Ricardo Sánchez, Manuel Elkin Patarroyo, Manuel Alfonso Patarroyo
BACKGROUND: Malaria is a worldwide public health problem; parasites from the genus Plasmodium spp. are the aetiological agent of this disease. The parasite is mainly diagnosed by microscope-based techniques. However, these have limited sensitivity. Many asymptomatic infections are sub-microscopic and can only be detected by molecular methods. This study was aimed at comparing nested PCR results to those obtained by microscope for diagnosing malaria and to present epidemiological data regarding malaria in Colombia's Amazon department...
November 29, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27894353/provider-and-user-acceptability-of-intermittent-screening-and-treatment-for-the-control-of-malaria-in-pregnancy-in-malawi
#12
Deborah Almond, Mwayi Madanitsa, Victor Mwapasa, Linda Kalilani-Phiri, Jayne Webster, Feiko Ter Kuile, Lucy Paintain
BACKGROUND: Malaria in pregnancy is a major cause of adverse maternal and fetal outcomes. Intermittent preventive treatment with sulfadoxine-pyrimethamine (IPTp-SP) is one of the control strategies promoted by WHO. In response to mounting resistance to SP, intermittent screening and treatment (ISTp) has been proposed as an alternative. The objective of this study was to explore the acceptability of ISTp for health workers and pregnant women. METHODS: Semi-structured interviews of ten health workers and five focus group discussions of 38 women enrolled in an ongoing trial comparing IPTp-SP and ISTp with dihydroartemisinin-piperaquine (DP) were conducted at two antenatal clinics in rural Malawi...
November 28, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27894320/successful-malaria-elimination-in-the-ecuador-peru-border-region-epidemiology-and-lessons-learned
#13
Lyndsay K Krisher, Jesse Krisher, Mariano Ambuludi, Ana Arichabala, Efrain Beltrán-Ayala, Patricia Navarrete, Tania Ordoñez, Mark E Polhemus, Fernando Quintana, Rosemary Rochford, Mercy Silva, Juan Bazo, Anna M Stewart-Ibarra
BACKGROUND: In recent years, malaria (Plasmodium vivax and Plasmodium falciparum) has been successfully controlled in the Ecuador-Peru coastal border region. The aim of this study was to document this control effort and to identify the best practices and lessons learned that are applicable to malaria control and to other vector-borne diseases. A proximal outcome evaluation was conducted of the robust elimination programme in El Oro Province, Ecuador, and the Tumbes Region, Peru. Data collection efforts included a series of workshops with local public health experts who played central roles in the elimination effort, review of epidemiological records from Ministries of Health, and a review of national policy documents...
November 28, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27887614/insight-into-k13-propeller-gene-polymorphism-and-ex-vivo-dha-response-profiles-from-cameroonian-isolates
#14
Sandie Menard, Joëlle Njila Tchoufack, Christelle Ngou Maffo, Sandrine E Nsango, Xavier Iriart, Luc Abate, Majoline Tchioffo Tsapi, Parfait H Awono-Ambéné, Francis A Abega Mekongo, Isabelle Morlais, Antoine Berry
BACKGROUND: The spread of Plasmodium falciparum resistance to artemisinin derivatives in Southeast Asia is a major source of concern and the emergence of resistance in Africa would have dramatic consequences, by increasing malaria mortality and morbidity. It is therefore urgent to implement regular monitoring in sentinel sites in sub-Saharan Africa using robust and easy-to-implement tools. The prevalence of k13-propeller mutations and the phenotypic profiles are poorly known in sub-Saharan Africa...
November 26, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27887652/limitations-of-malaria-reactive-case-detection-in-an-area-of-low-and-unstable-transmission-on-the-myanmar-thailand-border
#15
Daniel M Parker, Jordi Landier, Lorenz von Seidlein, Arjen Dondorp, Lisa White, Borimas Hanboonkunupakarn, Richard J Maude, François H Nosten
BACKGROUND: Reactive case detection is an approach that has been proposed as a tool for malaria elimination in low-transmission settings. It is an intuitively justified approach based on the concept of space-time clustering of malaria cases. When an index malaria clinical case is detected, it triggers reactive screening and treatment in the index house and neighbouring houses. However, the efficacy of this approach at varying screening radii and malaria prevalence remains ill defined...
November 25, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27887647/the-hide-and-seek-of-plasmodium-vivax-in-west-africa-report-from-a-large-scale-study-in-beninese-asymptomatic-subjects
#16
Philippe Poirier, Cécile Doderer-Lang, Pascal S Atchade, Jean-Philippe Lemoine, Marie-Louise Coquelin de l'Isle, Ahmed Abou-Bacar, Alexander W Pfaff, Julie Brunet, Lydia Arnoux, Elodie Haar, Denis Filisetti, Sylvie Perrotey, Nicodeme W Chabi, Casimir D Akpovi, Ludovic Anani, André Bigot, Ambaliou Sanni, Ermanno Candolfi
BACKGROUND: Plasmodium vivax is considered to be absent from western Africa, where the prevalence of Duffy-negative red blood cell phenotype proves to be high. Several studies have, however, detected P. vivax infection cases in this part of Africa, raising the question of what is the actual prevalence of P. vivax in local populations. METHODS: The presence of P. vivax was investigated in a large population of healthy blood donors in Benin using microscopy, serology and molecular detection...
November 25, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27884146/demographic-and-clinical-profiles-of-plasmodium-falciparum-and-plasmodium-vivax-patients-at-a-tertiary-care-centre-in-southwestern-india
#17
Laura Chery, Jennifer N Maki, Anjali Mascarenhas, Jayashri T Walke, Pooja Gawas, Anvily Almeida, Mezia Fernandes, Marina Vaz, Rakesh Ramanan, Diksha Shirodkar, Maria Bernabeu, Suresh Kumar Manoharan, Ligia Pereira, Rashmi Dash, Ambika Sharma, Riaz Basha Shaik, Rimi Chakrabarti, Prasad Babar, John White, Devaraja G Mudeppa, Shiva Kumar, Wenyun Zuo, Kristen M Skillman, Usheer Kanjee, Caeul Lim, Kathryn Shaw-Saliba, Ashwani Kumar, Neena Valecha, V N Jindal, Anar Khandeparkar, Pradeep Naik, Sunanda Amonkar, Manoj T Duraisingh, Shripad Tuljapurkar, Joseph D Smith, Nagesh Dubhashi, Roque G W Pinto, Maria Silveria, Edwin Gomes, Pradipsinh K Rathod
BACKGROUND: Malaria remains an important cause of morbidity and mortality in India. Though many comprehensive studies have been carried out in Africa and Southeast Asia to characterize and examine determinants of Plasmodium falciparum and Plasmodium vivax malaria pathogenesis, fewer have been conducted in India. METHODS: A prospective study of malaria-positive individuals was conducted at Goa Medical College and Hospital (GMC) from 2012 to 2015 to identify demographic, diagnostic and clinical indicators associated with P...
November 25, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27881136/community-health-workers-adherence-to-referral-guidelines-evidence-from-studies-introducing-rdts-in-two-malaria-transmission-settings-in-uganda
#18
Sham Lal, Richard Ndyomugenyi, Lucy Paintain, Neal D Alexander, Kristian S Hansen, Pascal Magnussen, Daniel Chandramohan, Siân E Clarke
BACKGROUND: Many malaria-endemic countries have implemented national community health worker (CHW) programmes to serve remote populations that have poor access to malaria diagnosis and treatment. Despite mounting evidence of CHWs' ability to adhere to malaria rapid diagnostic tests (RDTs) and treatment guidelines, there is limited evidence whether CHWs adhere to the referral guidelines and refer severely ill children for further management. In southwest Uganda, this study examined whether CHWs referred children according to training guidelines and described factors associated with adherence to the referral guideline...
November 24, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27881122/using-wechat-official-accounts-to-improve-malaria-health-literacy-among-chinese-expatriates-in-niger-an-intervention-study
#19
Wei Li, Le Qiang Han, Yan Jun Guo, Jing Sun
BACKGROUND: Malaria is the main health risk for Chinese expatriates working in Niger. Health education is a recommended intervention for prevention of malaria among non-immune travellers and expatriate workers. It is urgent to develop an effective and feasible way for these populations to obtain information about the prevention and treatment of malaria. METHODS: An individually randomized, unblinded, controlled trial was used to evaluate the effectiveness of using WeChat official accounts for health education to improve malaria health literacy among Chinese expatriates in Niger...
November 24, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27876050/studies-on-mosquito-biting-risk-among-migratory-rice-farmers-in-rural-south-eastern-tanzania-and-development-of-a-portable-mosquito-proof-hut
#20
Johnson K Swai, Marceline F Finda, Edith P Madumla, Godfrey F Lingamba, Irene R Moshi, Mohamed Y Rafiq, Silas Majambere, Fredros O Okumu
BACKGROUND: Subsistence rice farmers in south-eastern Tanzania are often migratory, spending weeks or months tending to crops in distant fields along the river valleys and living in improvised structures known as Shamba huts, not fully protected from mosquitoes. These farmers also experience poor access to organized preventive and curative services due to long distances. Mosquito biting exposure in these rice fields, relative to main village residences was assessed, then a portable mosquito-proof hut was developed and tested for protecting these migratory farmers...
November 22, 2016: Malaria Journal
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