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Barney B, Velasco M, Cooper C, Rashid A, Kyle D, Moon R, Domingo G, Jang IK. Diagnostic Characteristics of Lactate Dehydrogenase on a Multiplex Assay for Malaria Detection Including the Zoonotic Parasite Plasmodium knowlesi. Am J Trop Med Hyg 2021; 106:275-282. [PMID: 34781260 PMCID: PMC8733487 DOI: 10.4269/ajtmh.21-0532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/26/2021] [Indexed: 11/07/2022] Open
Abstract
Plasmodium lactate dehydrogenase (pLDH) is a common target in malaria rapid diagnostic tests (RDTs). These commercial antibody capture assays target either Plasmodium falciparum-specific pLDH (PfLDH), P. vivax-specific pLDH (PvLDH), or a conserved epitope in all human malaria pLDH (PanLDH). However, there are no assays specifically targeting P. ovale, P. malariae or zoonotic parasites such as P. knowlesi and P. cynomolgi. A malaria multiplex array, carrying the specific antibody spots for PfLDH, PvLDH, and PanLDH has been previously developed. This study aimed to assess potential cross-reactivity between pLDH from various Plasmodium species and this array. We tested recombinant pLDH proteins, clinical samples for P. vivax, P. falciparum, P. ovale curtisi, and P. malariae; and in vitro cultured P. knowlesi and P. cynomolgi. P. ovale-specific pLDH (PoLDH) and P. malariae-specific pLDH (PmLDH) cross-reacted with the PfLDH and PanLDH spots. Plasmodium Knowlesi-specific pLDH (PkLDH) and P. cynomolgi-specific pLDH (PcLDH) cross-reacted with the PvLDH spot, but only PkLDH was recognized by the PanLDH spot. Plasmodium ovale and P. malariae can be differentiated from P. falciparum by the concentration ratios of PanLDH/PfLDH, which had mean (range) values of 4.56 (4.07-5.16) and 4.56 (3.43-6.54), respectively, whereas P. falciparum had a lower ratio of 1.12 (0.56-2.61). Plasmodium knowlesi had a similar PanLDH/PvLDH ratio value, with P. vivax having a mean value of 2.24 (1.37-2.79). The cross-reactivity pattern of pLDH can be a useful predictor to differentiate certain Plasmodium species. Cross-reactivity of the pLDH bands in RDTs requires further investigation.
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Affiliation(s)
| | | | | | | | | | - Robert Moon
- London School of Hygiene and Tropical Medicine, London, United Kingdom
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2
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Chishimba S, Mwenda M, Mambwe B, Mulube C, Chalwe V, Moonga H, Hamainza B, Chizema-Kawesha E, Steketee RW, Domingo G, Fraser M, Kahn M, Pal S, Silumbe K, Conner RO, Bennett A, Porter TR, Eisele TP, Miller JM, Bridges DJ. Prevalence of Plasmodium falciparum and Non- falciparum Infections by Photo-Induced Electron Transfer-PCR in a Longitudinal Cohort of Individuals Enrolled in a Mass Drug Administration Trial in Southern Province, Zambia. Am J Trop Med Hyg 2020; 103:82-89. [PMID: 32618252 PMCID: PMC7416980 DOI: 10.4269/ajtmh.19-0668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Malaria burden in Zambia has significantly declined over the last decade because of improved coverage of several key malaria interventions (e.g., vector control, case management, bed net distributions, and enhanced surveillance/responses). Campaign-based mass drug administration (MDA) and focal MDA (fMDA) were assessed in a trial in Southern Province, Zambia, to identify its utility in elimination efforts. As part of the study, a longitudinal cohort was visited and tested (by PCR targeting the 18s rRNA and a Plasmodium falciparum–specific rapid diagnostic test [RDT] from SD Bioline) every month for the trial duration (18 months). Overall, there was high concordance (> 97%) between the PCR and RDT results, using the PCR as the gold standard. The RDTs had high specificity and negative predictive values (98.5% and 98.6%, respectively) but low sensitivity (53.0%) and a low positive predictive value (53.8%). There was evidence for persistent antigenemia affecting the low specificity of the RDT, while false-negative RDTs were associated with a lower parasite density than true positive RDTs. Plasmodium falciparum was the dominant species identified, with 98.3% of all positive samples containing P. falciparum. Of these, 97.5% were mono-infections and 0.8% coinfections with one other species. Plasmodium malariae was found in 1.4% of all positive samples (50% mono-infections and 50% coinfections with P. falciparum), whereas Plasmodium ovale was found in 1.1% of all positive samples (90% mono-infections and 10% coinfections with P. falciparum). Although MDA/fMDA appeared to reduce P. malariae prevalence, P. ovale prevalence appeared unchanged.
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Affiliation(s)
- Sandra Chishimba
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Mulenga Mwenda
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Brenda Mambwe
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Conceptor Mulube
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Victor Chalwe
- Zambia Ministry of Health Provincial Medical Office, Mansa, Zambia
| | - Hawela Moonga
- National Malaria Elimination Centre, Zambia Ministry of Health, Lusaka, Zambia
| | - Busiku Hamainza
- National Malaria Elimination Centre, Zambia Ministry of Health, Lusaka, Zambia
| | | | - Richard W Steketee
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Gonzalo Domingo
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Maya Fraser
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Maria Kahn
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Sampa Pal
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Kafula Silumbe
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Ruben O Conner
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Seattle, Washington
| | - Adam Bennett
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco, San Francisco, California
| | - Travis R Porter
- Department of Tropical Medicine, Center for Applied Malaria Research and Evaluation, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
| | - Thomas P Eisele
- Department of Tropical Medicine, Center for Applied Malaria Research and Evaluation, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
| | - John M Miller
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
| | - Daniel J Bridges
- PATH Malaria Control and Elimination Partnership in Africa (MACEPA), Lusaka, Zambia
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3
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Raez L, Usher J, Sumarriva D, Danenberg K, Hunis B, Jaimes Y, Domingo G, Danenberg P. PD2.01 PD-L1 and Other Potential Predictive Biomarkers Measured in Plasma by RT-PCR in cfRNA and cfDNA to Monitor Clinical Responses in Metastatic Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.09.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Raez L, Usher J, Danenberg K, Sumarriva D, Hunis B, Domingo G, Jaimes Y, Danenberg P, Rabizadeh S. P1.01-68 Monitoring Clinical Responses Measuring PD-L1 in cfRNA in Plasma of Non-Small Cell Lung Cancer Patients Undergoing Systemic Therapy. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Slater HC, Ross A, Felger I, Hofmann NE, Robinson L, Cook J, Gonçalves BP, Björkman A, Ouedraogo AL, Morris U, Msellem M, Koepfli C, Mueller I, Tadesse F, Gadisa E, Das S, Domingo G, Kapulu M, Midega J, Owusu-Agyei S, Nabet C, Piarroux R, Doumbo O, Doumbo SN, Koram K, Lucchi N, Udhayakumar V, Mosha J, Tiono A, Chandramohan D, Gosling R, Mwingira F, Sauerwein R, Paul R, Riley EM, White NJ, Nosten F, Imwong M, Bousema T, Drakeley C, Okell LC. The temporal dynamics and infectiousness of subpatent Plasmodium falciparum infections in relation to parasite density. Nat Commun 2019; 10:1433. [PMID: 30926893 PMCID: PMC6440965 DOI: 10.1038/s41467-019-09441-1] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 03/07/2019] [Indexed: 02/08/2023] Open
Abstract
Malaria infections occurring below the limit of detection of standard diagnostics are common in all endemic settings. However, key questions remain surrounding their contribution to sustaining transmission and whether they need to be detected and targeted to achieve malaria elimination. In this study we analyse a range of malaria datasets to quantify the density, detectability, course of infection and infectiousness of subpatent infections. Asymptomatically infected individuals have lower parasite densities on average in low transmission settings compared to individuals in higher transmission settings. In cohort studies, subpatent infections are found to be predictive of future periods of patent infection and in membrane feeding studies, individuals infected with subpatent asexual parasite densities are found to be approximately a third as infectious to mosquitoes as individuals with patent (asexual parasite) infection. These results indicate that subpatent infections contribute to the infectious reservoir, may be long lasting, and require more sensitive diagnostics to detect them in lower transmission settings. The role of subpatent infections for malaria transmission and elimination is unclear. Here, Slater et al. analyse several malaria datasets to quantify the density, detectability, course of infection and infectiousness of subpatent infections.
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Affiliation(s)
- Hannah C Slater
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, W2 1PG, UK.
| | - Amanda Ross
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, 4002, Switzerland.,University of Basel, Basel, 4001, Switzerland
| | - Ingrid Felger
- University of Basel, Basel, 4001, Switzerland.,Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, 4002, Switzerland
| | - Natalie E Hofmann
- University of Basel, Basel, 4001, Switzerland.,Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, 4002, Switzerland
| | - Leanne Robinson
- Vector-borne Diseases Unit, Papua New Guinea Institute for Medical Research, Madang, Papua New Guinea.,Division of Population Health and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia.,Medical Biology, University of Melbourne, Melbourne, 3010, VIC, Australia.,Disease Elimination, Burnet Institute, Melbourne, 3004, VIC, Australia
| | - Jackie Cook
- MRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - Bronner P Gonçalves
- Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - Anders Björkman
- Malaria Research, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Andre Lin Ouedraogo
- Département de Sciences Biomédicales, Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, 01 BP 2208, Burkina Faso.,Institute for Disease Modeling, Intellectual Ventures, Bellevue, 98005, Washington, USA
| | - Ulrika Morris
- Malaria Research, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Mwinyi Msellem
- Department of Training and Research, Mnazi Mmoja Hospital, Zanzibar, Tanzania
| | - Cristian Koepfli
- Population Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, 3052, Victoria, Australia.,Department of Biological Sciences, University of Notre Dame, Indiana, 46556, USA
| | - Ivo Mueller
- Division of Population Health and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia.,Department of Parasites and Insect Vectors, Institut Pasteur, Paris, 75015, France.,Medical Biology, University of Melbourne, Melbourne, 3010, VIC, Australia
| | - Fitsum Tadesse
- Radboud Institute for Health Sciences, Radboud University Medical Centre, Nijmegen, 6525, The Netherlands.,Armauer Hansen Research Institute, Addis Ababa, Ethiopia.,Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
| | | | - Smita Das
- Diagnostics Program, PATH, Seattle, Washington, 98121, United States of America
| | - Gonzalo Domingo
- Diagnostics Program, PATH, Seattle, Washington, 98121, United States of America
| | - Melissa Kapulu
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.,KEMRI-Wellcome Trust Research Programme, Centre for Geographic Medicine Research-Coast, Kilifi, Kenya, Centre for Genomics and Global Health, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Janet Midega
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.,KEMRI-Wellcome Trust Research Programme, Centre for Geographic Medicine Research-Coast, Kilifi, Kenya, Centre for Genomics and Global Health, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Seth Owusu-Agyei
- Institute of Health, University of Health and Allied Sciences, Hohoe, PMB 31, Ghana
| | - Cécile Nabet
- Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP- HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, 75646, France
| | - Renaud Piarroux
- Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP- HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Parasitologie-Mycologie, Paris, 75646, France
| | - Ogobara Doumbo
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Safiatou Niare Doumbo
- Malaria Research and Training Centre, Parasitic Diseases Epidemiology Department, UMI 3189, University of Sciences, Technique and Technology, Bamako, Mali
| | - Kwadwo Koram
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
| | - Naomi Lucchi
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Global Health, Centers for Disease Control and Prevention, Atlanta, 30030, GA, United States of America
| | - Venkatachalam Udhayakumar
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Global Health, Centers for Disease Control and Prevention, Atlanta, 30030, GA, United States of America
| | - Jacklin Mosha
- National Institute for Medical Research, Mwanza Medical Research Centre, Mwanza, Tanzania
| | - Alfred Tiono
- Department of Biomedical Sciences, Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, 01 BP 2208, Burkina Faso
| | - Daniel Chandramohan
- Department of Disease Control, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Roly Gosling
- Malaria Elimination Initiative, Global Health Group, University of California, San Francisco, San Francisco, 94158, CA, United States
| | - Felista Mwingira
- Biological Sciences Department, Dar es Salaam University College of Education, P. O. Box 2329, Dar es Salaam, Tanzania
| | - Robert Sauerwein
- Radboud Institute for Health Sciences, Radboud University Medical Centre, Nijmegen, 6525, The Netherlands
| | - Richard Paul
- Institut Pasteur de Dakar, Laboratoire d'Entomologie Médicale, Dakar, Senegal
| | - Eleanor M Riley
- Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.,The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Nicholas J White
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7FZ, UK.,Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Francois Nosten
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7FZ, UK.,Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, 63110, Thailand
| | - Mallika Imwong
- Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand.,Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Teun Bousema
- Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.,Radboud Institute for Health Sciences, Radboud University Medical Centre, Nijmegen, 6525, The Netherlands
| | - Chris Drakeley
- Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - Lucy C Okell
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, W2 1PG, UK
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6
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Greenhouse B, Daily J, Guinovart C, Goncalves B, Beeson J, Bell D, Chang MA, Cohen JM, Ding X, Domingo G, Eisele TP, Lammie PJ, Mayor A, Merienne N, Monteiro W, Painter J, Rodriguez I, White M, Drakeley C, Mueller I. Priority use cases for antibody-detecting assays of recent malaria exposure as tools to achieve and sustain malaria elimination. Gates Open Res 2019; 3:131. [PMID: 31172051 PMCID: PMC6545519 DOI: 10.12688/gatesopenres.12897.1] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2019] [Indexed: 01/12/2023] Open
Abstract
Measurement of malaria specific antibody responses represents a practical and informative method for malaria control programs to assess recent exposure to infection. Technical advances in recombinant antigen production, serological screening platforms, and analytical methods have enabled the identification of several target antigens for laboratory based and point-of-contact tests. Questions remain as to how these serological assays can best be integrated into malaria surveillance activities to inform programmatic decision-making. This report synthesizes discussions from a convening at Institut Pasteur in Paris in June 2017 aimed at defining practical and informative use cases for serology applications and highlights five programmatic uses for serological assays including: documenting the absence of transmission; stratification of transmission; measuring the effect of interventions; informing a decentralized immediate response; and testing and treating P. vivax hypnozoite carriers.
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Affiliation(s)
- Bryan Greenhouse
- Department of Medicine,, University of California San Francisco, San Francisco, CA, USA
| | | | - Caterina Guinovart
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- PATH, Seattle, WA, USA
| | | | | | - David Bell
- Intellectual Ventures, Bellevue, WA, USA
| | | | | | | | | | - Thomas P. Eisele
- Center for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, LA, USA
| | | | - Alfredo Mayor
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | | | - Wuelto Monteiro
- Tropical Medicine Foundation Dr. Heitor Viera Dourado, Manaus, Amazonas, Brazil
| | - John Painter
- Centers of Disease Control and Prevention, Atlanta, GA, USA
| | - Isabel Rodriguez
- Department of Medicine,, University of California San Francisco, San Francisco, CA, USA
| | | | - Chris Drakeley
- London School of Tropical Medicine & Hygiene, London, UK
| | - Ivo Mueller
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - The Malaria Serology Convening
- Department of Medicine,, University of California San Francisco, San Francisco, CA, USA
- Consultant to UNITAID, Denver, CO, USA
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- PATH, Seattle, WA, USA
- London School of Tropical Medicine & Hygiene, London, UK
- The Burnet Institute, Melbourne, Australia
- Intellectual Ventures, Bellevue, WA, USA
- Centers of Disease Control and Prevention, Atlanta, GA, USA
- Clinton Health Access Initiative (CHAI), Boston, MA, USA
- FIND, Geneva, Switzerland
- Center for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, LA, USA
- Institut Pasteur, Paris, France
- Tropical Medicine Foundation Dr. Heitor Viera Dourado, Manaus, Amazonas, Brazil
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
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7
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Thriemer K, Bobogare A, Ley B, Gudo CS, Alam MS, Anstey NM, Ashley E, Baird JK, Gryseels C, Jambert E, Lacerda M, Laihad F, Marfurt J, Pasaribu AP, Poespoprodjo JR, Sutanto I, Taylor WR, van den Boogaard C, Battle KE, Dysoley L, Ghimire P, Hawley B, Hwang J, Khan WA, Mudin RNB, Sumiwi ME, Ahmed R, Aktaruzzaman MM, Awasthi KR, Bardaji A, Bell D, Boaz L, Burdam FH, Chandramohan D, Cheng Q, Chindawongsa K, Culpepper J, Das S, Deray R, Desai M, Domingo G, Duoquan W, Duparc S, Floranita R, Gerth-Guyette E, Howes RE, Hugo C, Jagoe G, Sariwati E, Jhora ST, Jinwei W, Karunajeewa H, Kenangalem E, Lal BK, Landuwulang C, Le Perru E, Lee SE, Makita LS, McCarthy J, Mekuria A, Mishra N, Naket E, Nambanya S, Nausien J, Duc TN, Thi TN, Noviyanti R, Pfeffer D, Qi G, Rahmalia A, Rogerson S, Samad I, Sattabongkot J, Satyagraha A, Shanks D, Sharma SN, Sibley CH, Sungkar A, Syafruddin D, Talukdar A, Tarning J, ter Kuile F, Thapa S, Theodora M, Huy TT, Waramin E, Waramori G, Woyessa A, Wongsrichanalai C, Xa NX, Yeom JS, Hermawan L, Devine A, Nowak S, Jaya I, Supargiyono S, Grietens KP, Price RN. Quantifying primaquine effectiveness and improving adherence: a round table discussion of the APMEN Vivax Working Group. Malar J 2018; 17:241. [PMID: 29925430 PMCID: PMC6011582 DOI: 10.1186/s12936-018-2380-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 06/08/2018] [Indexed: 01/13/2023] Open
Abstract
The goal to eliminate malaria from the Asia-Pacific by 2030 will require the safe and widespread delivery of effective radical cure of malaria. In October 2017, the Asia Pacific Malaria Elimination Network Vivax Working Group met to discuss the impediments to primaquine (PQ) radical cure, how these can be overcome and the methodological difficulties in assessing clinical effectiveness of radical cure. The salient discussions of this meeting which involved 110 representatives from 18 partner countries and 21 institutional partner organizations are reported. Context specific strategies to improve adherence are needed to increase understanding and awareness of PQ within affected communities; these must include education and health promotion programs. Lessons learned from other disease programs highlight that a package of approaches has the greatest potential to change patient and prescriber habits, however optimizing the components of this approach and quantifying their effectiveness is challenging. In a trial setting, the reactivity of participants results in patients altering their behaviour and creates inherent bias. Although bias can be reduced by integrating data collection into the routine health care and surveillance systems, this comes at a cost of decreasing the detection of clinical outcomes. Measuring adherence and the factors that relate to it, also requires an in-depth understanding of the context and the underlying sociocultural logic that supports it. Reaching the elimination goal will require innovative approaches to improve radical cure for vivax malaria, as well as the methods to evaluate its effectiveness.
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Affiliation(s)
- Kamala Thriemer
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia
| | - Albino Bobogare
- Ministry of Health and Medical Services, National Vector-Borne Disease Control Programme, Honiara, Solomon Islands
| | - Benedikt Ley
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia
| | | | - Mohammad Shafiul Alam
- 0000 0004 0600 7174grid.414142.6International Center for Diarrheal Diseases (ICDDR,B), Dhaka, Bangladesh
| | - Nick M. Anstey
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia
| | - Elizabeth Ashley
- Myanmar-Oxford Clinical Research Unit, Yangon, Myanmar ,0000 0004 1936 8948grid.4991.5Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK
| | - J. Kevin Baird
- 0000 0004 1936 8948grid.4991.5Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK ,0000 0004 1795 0993grid.418754.bEijkman-Oxford Clinical Research Unit, Jakarta, Indonesia
| | - Charlotte Gryseels
- 0000 0001 2153 5088grid.11505.30Institute of Tropical Medicine Antwerp, Antwerp, Belgium
| | - Elodie Jambert
- 0000 0004 0432 5267grid.452605.0Medicines for Malaria Venture (MMV), Geneva, Switzerland
| | - Marcus Lacerda
- Instituto Leônidas & Maria Deane (Fiocruz), Manaus, Amazonas Brazil ,0000 0004 0486 0972grid.418153.aFundação de Medicina Tropical Dr, Heitor Vieira Dourado, Manaus, Amazonas Brazil
| | - Ferdinand Laihad
- National Forum on Indonesia RBM/National Forum on Gebrak Malaria, Jakarta, Indonesia
| | - Jutta Marfurt
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia
| | | | | | - Inge Sutanto
- 0000000120191471grid.9581.5University of Indonesia, Jakarta, Indonesia
| | - Walter R. Taylor
- 0000 0004 1936 8948grid.4991.5Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK ,Mahidol Oxford Clinical Research Unit (MORU), Bangkok, Thailand
| | - Christel van den Boogaard
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia
| | - Katherine E. Battle
- 0000 0004 1936 8948grid.4991.5Malaria Atlas Project (MAP), Big Data Institute, University of Oxford, Oxford, UK
| | - Lek Dysoley
- grid.452707.3National Center for Parasitology, Entomology and Malaria Control, Phnom Penh, Cambodia ,grid.436334.5School of Public Health, National Institute of Public Health, Phnom Penh, Cambodia
| | - Prakash Ghimire
- 0000 0001 2114 6728grid.80817.36Microbiology Department, Tribhuvan University, Kathmandu, Nepal
| | - Bill Hawley
- 0000 0001 2163 0069grid.416738.fEntomology Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, USA
| | - Jimee Hwang
- 0000 0001 2163 0069grid.416738.fPresident’s Malaria Initiative, Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, USA ,0000 0001 2297 6811grid.266102.1Global Health Group, University of California San Francisco, San Francisco, USA
| | - Wasif Ali Khan
- 0000 0004 0600 7174grid.414142.6International Center for Diarrheal Diseases (ICDDR,B), Dhaka, Bangladesh
| | - Rose Nani Binti Mudin
- 0000 0001 0690 5255grid.415759.bDisease Control Division, Ministry of Health, Putrajaya, Malaysia
| | | | - Rukhsana Ahmed
- 0000 0004 1936 9764grid.48004.38Liverpool School of Tropical Medicine, Liverpool, UK
| | - M. M. Aktaruzzaman
- grid.466907.aDirectorate General of Health Services, Ministry of Health & Family Welfare Government of the People’s Republic of Bangladesh, Dhaka, Bangladesh
| | | | - Azucena Bardaji
- 0000 0000 9635 9413grid.410458.cISGlobal, Hospital Clínic-Universitat de Barcelona, Barcelona, Spain
| | - David Bell
- 0000 0004 0406 7608grid.471104.7Intellectual Ventures Global Good Fund, Bellevue, USA
| | - Leonard Boaz
- Ministry of Health and Medical Services, National Vector-Borne Disease Control Programme, Honiara, Solomon Islands
| | | | - Daniel Chandramohan
- 0000 0004 0425 469Xgrid.8991.9The London School of Hygiene & Tropical Medicine (LSHTM), London, UK
| | - Qin Cheng
- Australian Defence Force Malaria and Infectious Disease Institute, Enoggera, Australia
| | | | - Janice Culpepper
- 0000 0000 8990 8592grid.418309.7Bill & Melinda Gates Foundation, Seattle, USA
| | - Santasabuj Das
- 0000 0004 1767 225Xgrid.19096.37Indian Council of Medical Research, New Delhi, India
| | - Raffy Deray
- Department of Health, National Centre for Disease Control & Prevention, Manila, Philippines
| | - Meghna Desai
- 0000 0001 2163 0069grid.416738.fMalaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, USA
| | | | - Wang Duoquan
- 0000 0000 8803 2373grid.198530.6National Institute of Parasitic Diseases, China CDC, Shanghai, China
| | - Stephan Duparc
- 0000 0004 0432 5267grid.452605.0Medicines for Malaria Venture (MMV), Geneva, Switzerland
| | | | | | - Rosalind E. Howes
- 0000 0004 1936 8948grid.4991.5Malaria Atlas Project (MAP), Big Data Institute, University of Oxford, Oxford, UK
| | | | - George Jagoe
- 0000 0004 0432 5267grid.452605.0Medicines for Malaria Venture (MMV), Geneva, Switzerland
| | - Elvieda Sariwati
- 0000 0004 0470 8161grid.415709.eMinistry of Health, National Malaria Control Program, Jakarta, Indonesia
| | - Sanya Tahmina Jhora
- grid.466907.aDirectorate General of Health Services, Ministry of Health & Family Welfare Government of the People’s Republic of Bangladesh, Dhaka, Bangladesh
| | - Wu Jinwei
- Tengchong Center for Disease Control and Prevention, Tengchong, China
| | - Harin Karunajeewa
- grid.1042.7Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Enny Kenangalem
- Yayasan Pengembangan Kesehatan dan Masyarakat, Papua (YPKMP), Papua, Indonesia
| | - Bibek Kumar Lal
- Epidemiology & Disease Control Division, Department of Health Services, Ministry of Health and Population, Kathmandu, Nepal
| | | | | | - Sang-Eun Lee
- 0000 0004 1763 8617grid.418967.5Division of Vectors and Parasitic Diseases, Korea Centers for Disease Control and Prevention, Seoul, South Korea
| | - Leo Sora Makita
- Ministry of Health, National Malaria Control Programme, Port Mosby, Papua New Guinea
| | - James McCarthy
- 0000 0001 2294 1395grid.1049.cQIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Asrat Mekuria
- 0000 0001 1250 5688grid.7123.7School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Neelima Mishra
- 0000 0004 1767 225Xgrid.19096.37Indian Council of Medical Research, New Delhi, India
| | - Esau Naket
- Ministry of Health, Malaria and Other Vector-Borne Diseases Control Program (MOVBDCP), Port Vila, Vanuatu
| | - Simone Nambanya
- Center of Malariology, Parasitology and Entomology, Communicable Diseases Control, Vientiane, Lao PDR
| | - Johnny Nausien
- Ministry of Health, Malaria and Other Vector-Borne Diseases Control Program (MOVBDCP), Port Vila, Vanuatu
| | - Thang Ngo Duc
- grid.452658.8National Institute of Malariology, Parasitology and Entomology (NIMPE), Hanoi, Vietnam
| | - Thuan Nguyen Thi
- grid.452658.8National Institute of Malariology, Parasitology and Entomology (NIMPE), Hanoi, Vietnam
| | - Rinitis Noviyanti
- 0000 0004 1795 0993grid.418754.bEijkman Institute for Molecular Biology, Jakarta, Indonesia
| | - Daniel Pfeffer
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia ,0000 0004 1936 8948grid.4991.5Malaria Atlas Project (MAP), Big Data Institute, University of Oxford, Oxford, UK
| | - Gao Qi
- grid.452515.2Jiangsu Institute of Parasitic Diseases, Wuxi, China ,WHO Collaborative Centre for Research and Training of Malaria Elimination, Wuxi, China
| | - Annisa Rahmalia
- 0000 0004 1796 1481grid.11553.33Tuberculosis-HIV Research Center Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia ,0000000122931605grid.5590.9Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Stephen Rogerson
- 0000 0001 2179 088Xgrid.1008.9Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
| | - Iriani Samad
- 0000 0004 0470 8161grid.415709.eMinistry of Health, National Malaria Control Program, Jakarta, Indonesia
| | - Jetsumon Sattabongkot
- 0000 0004 1937 0490grid.10223.32Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Bangok, Thailand
| | - Ari Satyagraha
- 0000 0004 1795 0993grid.418754.bEijkman Institute for Molecular Biology, Jakarta, Indonesia
| | - Dennis Shanks
- Australian Defence Force Malaria and Infectious Disease Institute, Enoggera, Australia
| | - Surender Nath Sharma
- grid.415820.aNational Vector Borne Disease Control Programme Directorate General of Health Services Ministry of Health & Family Welfare, New Delhi, India
| | - Carol Hopkins Sibley
- WorldWide Antimalarial Resistance Network (WWARN), Oxford, UK ,0000000122986657grid.34477.33University of Washington, Seattle, WA USA
| | - Ali Sungkar
- 0000 0004 0470 8161grid.415709.eFamily Health Directorate, Ministry of Health, Jakarta, Indonesia
| | - Din Syafruddin
- 0000 0004 1795 0993grid.418754.bEijkman Institute for Molecular Biology, Jakarta, Indonesia
| | - Arunansu Talukdar
- 0000 0004 1768 2335grid.413204.0Medicine Department, Medical College Kolkata, Kolkata, India
| | - Joel Tarning
- Mahidol Oxford Clinical Research Unit (MORU), Bangkok, Thailand
| | - Feiko ter Kuile
- 0000 0004 1936 9764grid.48004.38Liverpool School of Tropical Medicine, Liverpool, UK ,0000 0001 0155 5938grid.33058.3dKenya Medical Research Institute (KEMRI) Centre for Global Health Research, Kisumu, Kenya
| | | | - Minerva Theodora
- 0000 0004 0470 8161grid.415709.eMinistry of Health, National Malaria Control Program, Jakarta, Indonesia
| | - Tho Tran Huy
- grid.452658.8National Institute of Malariology, Parasitology and Entomology (NIMPE), Hanoi, Vietnam
| | - Edward Waramin
- Family Health Services, Ministry of Health, Port Mosby, Papua New Guinea
| | | | - Adugna Woyessa
- grid.452387.fEthiopian Public Health Institute (EPHI), Addis Ababa, Ethiopia
| | | | - Nguyen Xuan Xa
- grid.452658.8National Institute of Malariology, Parasitology and Entomology (NIMPE), Hanoi, Vietnam
| | - Joon Sup Yeom
- 0000 0004 0470 5454grid.15444.30Yonsei University College of Medicine, Seoul, South Korea
| | - Lukas Hermawan
- 0000 0004 0470 8161grid.415709.eFamily Health Directorate, Ministry of Health, Jakarta, Indonesia
| | - Angela Devine
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia ,0000 0004 1936 8948grid.4991.5Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK ,Mahidol Oxford Clinical Research Unit (MORU), Bangkok, Thailand
| | - Spike Nowak
- 0000 0000 8940 7771grid.415269.dPATH, Seattle, USA
| | - Indra Jaya
- Program and Information Department, Directorate General of Disease Prevention and Control, Jakarta, Indonesia
| | | | - Koen Peeters Grietens
- 0000 0001 2153 5088grid.11505.30Institute of Tropical Medicine Antwerp, Antwerp, Belgium
| | - Ric N. Price
- 0000 0000 8523 7955grid.271089.5Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, Darwin, Darwin, NT 0810 Australia ,0000 0004 1936 8948grid.4991.5Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK
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8
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Huang S, Abe K, Bennett S, Liang T, Ladd PD, Yokobe L, Anderson CE, Shah K, Bishop J, Purfield M, Kauffman PC, Paul S, Welch AE, Strelitz B, Follmer K, Pullar K, Sanchez-Erebia L, Gerth-Guyette E, Domingo G, Klein E, Englund JA, Fu E, Yager P. Disposable Autonomous Device for Swab-to-Result Diagnosis of Influenza. Anal Chem 2017; 89:5776-5783. [PMID: 28445636 DOI: 10.1021/acs.analchem.6b04801] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A prototype of a self-contained, automated, disposable device for chemically amplified protein-based detection of influenza virus from nasal swab specimens was developed and evaluated in a clinical setting. The device required only simple specimen manipulation without any dedicated instrumentation or specialized training by the operator for interpretation. The device was based on a sandwich immunoassay for influenza virus nucleoprotein; it used an enzyme-labeled antibody and a chromogenic substrate to provide an amplified visible signal, in a two-dimensional paper network format. All reagents were stored within the device. Device performance was assessed at Seattle Children's Hospital; clinical staff collected nasal swab samples from 25 patients and then operated test devices on site to detect influenza A and B in those specimens. The total test time from device initiation to result was approximately 35 min. Device performance for influenza A detection was ∼70% accurate using in-house qRT-PCR influenza A as a gold-standard comparison. The ratio of valid to total completed device runs yielded a success rate of 92%, and the negative predictive value for both the influenza A and B assay was 81%. The ability to diagnose respiratory infections rapidly and close to the patient was well received by hospital staff, inspiring further optimization of device function.
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Affiliation(s)
- Shichu Huang
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Koji Abe
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Steven Bennett
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Tinny Liang
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Paula D Ladd
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | | | - Caitlin E Anderson
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Kamal Shah
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Josh Bishop
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Mike Purfield
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Peter C Kauffman
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Sai Paul
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - AnneMarie E Welch
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Bonnie Strelitz
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | - Kristin Follmer
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | - Kelsey Pullar
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | - Luis Sanchez-Erebia
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | | | | | - Eileen Klein
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | - Janet A Englund
- Center for Clinical and Translational Research, Seattle Children's Hospital , Seattle, Washington 98105, United States
| | - Elain Fu
- Chemical, Biological, and Environmental Engineering, Oregon State University , Corvallis, Oregon 97331, United States
| | - Paul Yager
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
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Domingo G, Iglesias A, Monserrat L, Sanchez L, Cantalapiedra J, Lorenzo JM. Effect of crossbreeding with Limousine, Rubia Gallega and Belgium Blue on meat quality and fatty acid profile of Holstein calves. Anim Sci J 2015; 86:913-21. [DOI: 10.1111/asj.12373] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 11/18/2014] [Indexed: 11/30/2022]
Affiliation(s)
| | - Antonio Iglesias
- Departamento de Anatomía y Producción Animal; Universidad de Santiago de Compostela; Lugo Spain
| | | | | | | | - Jose Manuel Lorenzo
- Centro Tecnológico de la Carne de Galicia; Parque Tecnológico de Galicia; Ourense Spain
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von Seidlein L, Auburn S, Espino F, Shanks D, Cheng Q, McCarthy J, Baird K, Moyes C, Howes R, Ménard D, Bancone G, Winasti-Satyahraha A, Vestergaard LS, Green J, Domingo G, Yeung S, Price R. Review of key knowledge gaps in glucose-6-phosphate dehydrogenase deficiency detection with regard to the safe clinical deployment of 8-aminoquinoline treatment regimens: a workshop report. Malar J 2013; 12:112. [PMID: 23537118 PMCID: PMC3616837 DOI: 10.1186/1475-2875-12-112] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 03/14/2013] [Indexed: 01/24/2023] Open
Abstract
The diagnosis and management of glucose-6-phosphate dehydrogenase (G6PD) deficiency is a crucial aspect in the current phases of malaria control and elimination, which will require the wider use of 8-aminoquinolines for both reducing Plasmodium falciparum transmission and achieving the radical cure of Plasmodium vivax. 8-aminoquinolines, such as primaquine, can induce severe haemolysis in G6PD-deficient individuals, potentially creating significant morbidity and undermining confidence in 8-aminoquinoline prescription. On the other hand, erring on the side of safety and excluding large numbers of people with unconfirmed G6PD deficiency from treatment with 8-aminoquinolines will diminish the impact of these drugs. Estimating the remaining G6PD enzyme activity is the most direct, accessible, and reliable assessment of the phenotype and remains the gold standard for the diagnosis of patients who could be harmed by the administration of primaquine. Genotyping seems an unambiguous technique, but its use is limited by cost and the large range of recognized G6PD genotypes. A number of enzyme activity assays diagnose G6PD deficiency, but they require a cold chain, specialized equipment, and laboratory skills. These assays are impractical for care delivery where most patients with malaria live. Improvements to the diagnosis of G6PD deficiency are required for the broader and safer use of 8-aminoquinolines to kill hypnozoites, while lower doses of primaquine may be safely used to kill gametocytes without testing. The discussions and conclusions of a workshop conducted in Incheon, Korea in May 2012 to review key knowledge gaps in G6PD deficiency are reported here.
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Affiliation(s)
- Lorenz von Seidlein
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
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Abramson S, Ackermann DM, Akins R, Anders R, Andersen PJ, Anderson JM, Ankrum JA, Anseth KS, Antonucci J, Atzet S, Badylak SF, Baura GD, Bellamkonda RV, Best SM, Bhumiratana S, Bianco RW, Bokros JC, Borovetz HS, Boskey AL, Brown JL, Brown BN, Brown SA, Brunski JB, Cahn F, Ritchie AC, Caplan AI, Carpenedo RL, Chilkoti A, Chung S, Cimetta E, Cleary G, Clements IP, Colas A, Coleman KP, Conway DE, Cooper SL, Costerton B, Coury AJ, Cunanan C, Curtis J, D’Amore A, DeMeo P, Desai TA, Dickens S, Domingo G, Duncan E, Eskin SG, Feigal DW, Ferreira L, Fuller J, Gallegos RP, Gawalt E, Ghosh K, Ghosn B, Gilbert TW, Glaser DE, Godier-Furnemont A, Gombotz WR, Grainger DW, Grunkemeier GL, Hacking SA, Hallab NJ, Hall-Stoodley L, Hanson SR, Haubold AD, Hauch KD, Hawkins KR, Heath DE, Helm DL, Hench LL, Hensten A, Hill RT, Hobson C, Hoerstrup SP, Hoffman AS, Horbett TA, Hubbell JA, Humayun MS, Ideker R, Ingber DE, Jain R, Jacob J, Jacobs JJ, Jacobsen N, Jin R, Johnson RJ, Karp JM, Kasper FK, Kathju S, Khademhosseini A, Kim S, King MW, Kleiner LW, Kohn J, Koschwanez HE, Kumbar SG, Kuo CK, LaFleur L, Lahti MT, Lambert B, Langer R, Laurencin CT, Lee-Parritz D, Lemons JE, Levin M, Levy RJ, Lewerenz GM, Li WJ, Lin CC, Liu F, Lowrie WG, Lu Y, Lysaght MJ, Maidhof R, Mansbridge J, Cristina M, Martins L, Martin J, Mayesh JP, McDevitt TC, McIntire LV, Merrit K, Migliaresi C, Mikos AG, Misch CE, Mitchell RN, More RB, Moss CW, Munson JM, Navarro M, Nerem RM, Ogawa R, Orgill BD, Orgill DP, Padera RF, Pandit A, Park K, Patel AS, Peck RB, Peckham PH, Peppas NA, Pereira MN, Planell J, Popat KC, Prestwich GD, Pun SH, Rabolt J, Rainbow RS, Rajab T, Ratner BD, Reichert WM, Rivard AL, Rowley AP, Ruan G, Sacks M, Sarkar D, Schaefer S, Schmidt CE, Schoen FJ, Schutte SC, Sefton MV, Shalaby SW, Shirtliff M, Simon MA, Singh M, Slack SM, Spelman FA, Starr A, Stayton PS, Steinert R, Stoodley P, Suri S, Swi Chang TM, Tandon N, Tanguay AR, Taylor MS, Teo GS, Thodeti CK, Tolkoff J, Treiser M, Tuan RS, Tucker EI, Venugopalan R, Vicari AR, Viney C, Voight JM, Vunjak-Novakovic G, Wagner WR, Wang L, Wasiluk KR, Watts DC, Weigl BH, Weiland JD, Whalen JJ, Williams DF, Williams RL, Wilson JT, Wilson CG, Winter J, Wolf MF, Wright JC, Yager P, Zhao W. Contributors. Biomater Sci 2013. [DOI: 10.1016/b978-0-08-087780-8.00150-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Carnes J, Schnaufer A, McDermott SM, Domingo G, Proff R, Steinberg AG, Kurtz I, Stuart K. Mutational analysis of Trypanosoma brucei editosome proteins KREPB4 and KREPB5 reveals domains critical for function. RNA 2012; 18:1897-1909. [PMID: 22919050 PMCID: PMC3446712 DOI: 10.1261/rna.035048.112] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 07/16/2012] [Indexed: 05/29/2023]
Abstract
The transcriptome of kinetoplastid mitochondria undergoes extensive RNA editing that inserts and deletes uridine residues (U's) to produce mature mRNAs. The editosome is a multiprotein complex that provides endonuclease, TUTase, exonuclease, and ligase activities required for RNA editing. The editosome's KREPB4 and KREPB5 proteins are essential for editosome integrity and parasite viability and contain semi-conserved motifs corresponding to zinc finger, RNase III, and PUF domains, but to date no functional analysis of these domains has been reported. We show here that various point mutations to KREPB4 and KREPB5 identify essential domains, and suggest that these proteins do not themselves perform RNase III catalysis. The zinc finger of KREPB4 but not KREPB5 is essential for editosome integrity and parasite viability, and mutation of the RNase III signature motif in KREPB5 prevents integration into editosomes, which is lethal. Isolated TAP-tagged KREPB4 and KREPB5 complexes preferentially associate with components of the deletion subcomplex, providing additional insights into editosome architecture. A new alignment of editosome RNase III sequences from several kinetoplastid species implies that KREPB4 and KREPB5 lack catalytic activity and reveals that the PUF motif is present in the editing endonucleases KREN1, KREN2, and KREN3. The data presented here are consistent with the hypothesis that KREPB4 and KREPB5 form intermolecular heterodimers with the catalytically active editing endonucleases, which is unprecedented among known RNase III proteins.
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Affiliation(s)
- Jason Carnes
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
| | - Achim Schnaufer
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
| | | | - Gonzalo Domingo
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
| | - Rose Proff
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
| | | | - Irina Kurtz
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
| | - Kenneth Stuart
- Seattle Biomedical Research Institute, Seattle, Washington 98109, USA
- Department of Global Health, University of Washington, Seattle, Washington 98195, USA
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Espinoza H, Sequeira M, Domingo G, Amador JJ, Quintanilla M, de los Santos T. Management of the HIV epidemic in Nicaragua: the need to improve information systems and access to affordable diagnostics. Bull World Health Organ 2012; 89:619-20. [PMID: 21836761 DOI: 10.2471/blt.11.086124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 05/20/2011] [Accepted: 05/27/2011] [Indexed: 11/27/2022] Open
Affiliation(s)
- Henry Espinoza
- PATH Nicaragua Office, Semáforos de Enitel Villa Fontana, 1 cuadra arriba, 1 cuadra al lago, Edificio OPUS II (tercer piso), Managua, Nicaragua
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15
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Vannini C, Domingo G, Marsoni M, Bracale M, Sestili S, Ficcadenti N, Speranza A, Crinelli R, Carloni E, Scoccianti V. Proteomic changes and molecular effects associated with Cr(III) and Cr(VI) treatments on germinating kiwifruit pollen. Phytochemistry 2011; 72:1786-1795. [PMID: 21708391 DOI: 10.1016/j.phytochem.2011.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/25/2011] [Accepted: 06/02/2011] [Indexed: 05/31/2023]
Abstract
The present study is aimed at identifying molecular changes elicited by Cr(III) and Cr(VI) on germinating kiwifruit pollen. To address this question, comparative proteomic and DNA laddering analyses were performed. While no genotoxic effect was detected, a number of proteins whose accumulation levels were altered by treatments were identified. In particular, the upregulation of some proteins involved in the scavenging response, cell redox homeostasis and lipid synthesis could be interpreted as an oxidative stress response induced by Cr treatment. The strong reduction of two proteins involved in mitochondrial oxidative phosphorylation and a decline in ATP levels were also observed. The decrease of pollen energy availability could be one of the causes of the severe inhibition of the pollen germination observed upon exposure to both Cr(III) and Cr(VI). Finally, proteomic and biochemical data indicate proteasome impairment: the consequential accumulation of misfolded/damaged proteins could be an important molecular mechanism of Cr(III) toxicity in pollen.
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Affiliation(s)
- C Vannini
- Dipartimento Ambiente, Salute, Sicurezza, Università degli Studi dell'Insubria, Via G.B. Vico 46, 21100 Varese, Italy
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16
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Vijande J, Ballester F, Domingo G, Ouhib Z, Pujades M, Pérez-Calatayud J. 686 poster DOSIMETRY COMPARISON BETWEEN TG-43 AND MONTE CARLO CALCULATIONS USING THE FREIBURG FLAP FOR SKIN HDR BRACHYTHERAPY. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70808-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Pasayan M, Cosca K, Domingo G, Saniel M. PP-037 Infective endocarditis due to Burkholderia cepacia in a patient with a permanent pacemaker. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60105-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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18
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Abstract
In many health care settings, it is uneconomical, impractical, or unaffordable to maintain and access a fully equipped diagnostics laboratory. Examples include home health care, developing-country health care, and emergency situations in which first responders are dealing with pandemics or biowarfare agent release. In those settings, fully disposable diagnostic devices that require no instrument support, reagent, or significant training are well suited. Although the only such technology to have found widespread adoption so far is the immunochromatographic rapid assay strip test, microfluidics holds promise to expand the range of assay technologies that can be performed in formats similar to that of a strip test. In this paper, we review progress toward development of disposable, low-cost, easy-to-use microfluidics-based diagnostics that require no instrument at all. We also present examples of microfluidic functional elements--including mixers, separators, and detectors--as well as complete microfluidic devices that function entirely without any moving parts and external power sources.
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Affiliation(s)
- Bernhard Weigl
- Diagnostic Development Group, PATH, 1455 NW Leary Way, Seattle, WA 98107, USA.
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19
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