2024
Noninvasive in vivo photoacoustic detection of malaria with Cytophone in Cameroon
Yadem A, Armstrong J, Sarimollaoglu M, Kiki Massa C, Ndifo J, Menyaev Y, Mbe A, Richards K, Wade M, Zeng Y, Chen R, Zhou Q, Meten E, Ntone R, Tchuedji Y, Ullah S, Galanzha E, Eteki L, Gonsu H, Biris A, Suen J, Boum Y, Zharov V, Parikh S. Noninvasive in vivo photoacoustic detection of malaria with Cytophone in Cameroon. Nature Communications 2024, 15: 9228. PMID: 39455558, PMCID: PMC11511992, DOI: 10.1038/s41467-024-53243-z.Peer-Reviewed Original ResearchConceptsClearance of parasitemiaDetection of malariaMalaria-infected red blood cellsDiagnosed symptomatic casesCross-sectional cohortUncomplicated malariaMalaria diagnosticsMalaria infectionRed blood cellsSymptomatic casesTarget antigenAsymptomatic reservoirCameroonian adultsFlow cytometer platformBlood samplesReservoir of infectionBlood cellsLack sensitivityLongitudinal cohortMolecular assaysMalariaIRBCPoint-of-careCohortQuantitative PCRPersistent and multiclonal malaria parasite dynamics despite extended artemether-lumefantrine treatment in children
Goodwin J, Kajubi R, Wang K, Li F, Wade M, Orukan F, Huang L, Whalen M, Aweeka F, Mwebaza N, Parikh S. Persistent and multiclonal malaria parasite dynamics despite extended artemether-lumefantrine treatment in children. Nature Communications 2024, 15: 3817. PMID: 38714692, PMCID: PMC11076639, DOI: 10.1038/s41467-024-48210-7.Peer-Reviewed Original ResearchConceptsDay 7 lumefantrine concentrationsArtemether-lumefantrine treatmentRing-stage parasitesEarly post-treatmentEarly post-treatment periodArtemether-lumefantrineArtemisinin resistanceDay regimenMulticlonal infectionsEfficacious therapyFollow-upRandomized trialsPersistent clonesTransmission settingsEffective treatmentPost-treatment periodRegimensAntimalarial studiesStandard diagnosticsStandard 3DaysPost-treatmentChildrenTreatmentTherapy
2022
Impact of Drug Exposure on Resistance Selection Following Artemether‐Lumefantrine Treatment for Malaria in Children With and Without HIV in Uganda
Kay K, Goodwin J, Ehrlich H, Ou J, Freeman T, Wang K, Li F, Wade M, French J, Huang L, Aweeka F, Mwebaza N, Kajubi R, Riggs M, Ruiz‐Garcia A, Parikh S. Impact of Drug Exposure on Resistance Selection Following Artemether‐Lumefantrine Treatment for Malaria in Children With and Without HIV in Uganda. Clinical Pharmacology & Therapeutics 2022, 113: 660-669. PMID: 36260349, PMCID: PMC9981240, DOI: 10.1002/cpt.2768.Peer-Reviewed Original ResearchConceptsLopinavir-ritonavirLumefantrine concentrationsSensitive parasitesRecurrence riskPopulation PK/PD modelArtemether-lumefantrine treatmentTrimethoprim-sulfamethoxazole prophylaxisPK/PD modelPopulation PK modelFirst-order absorptionHigh transmission regionsAntiretroviral regimensLumefantrine exposureLumefantrine susceptibilityPfcrt K76Pfmdr1 N86Suboptimal dosingArtemether-lumefantrineTwo-compartment modelHIV statusRecurrent infectionsCombination therapyDrug exposurePrimary treatmentArtemisinin resistanceClinical characteristics of Plasmodium falciparum infection among symptomatic patients presenting to a major urban military hospital in Cameroon
Hodson DZ, Mbarga Etoundi Y, Mbatou Nghokeng N, Mohamadou Poulibe R, Magne Djoko S, Goodwin J, Cheteug Nguesta G, Nganso T, Armstrong JN, Andrews JJ, Zhang E, Wade M, Eboumbou Moukoko CE, Boum Y, Parikh S. Clinical characteristics of Plasmodium falciparum infection among symptomatic patients presenting to a major urban military hospital in Cameroon. Malaria Journal 2022, 21: 298. PMID: 36273147, PMCID: PMC9588226, DOI: 10.1186/s12936-022-04315-2.Peer-Reviewed Original ResearchConceptsP. falciparum infectionPopulation attributable risk percentFalciparum infectionPlasmodium falciparum infectionYears of ageClinical characteristicsUrban hospitalMilitary HospitalAttributable risk percentHigher positivity rateLikelihood ratioRapid diagnostic testsMajor urban hospitalRural African settingConclusionsThe prevalenceHigh feverSymptomatic patientsHemoglobin levelsAnemia prevalenceSevere anemiaEmergency departmentVenous samplesClinical surveyPositivity rateWHO definition
2017
Evaluation of the Deki Reader™, an automated RDT reader and data management device, in a household survey setting in low malaria endemic southwestern Uganda
Oyet C, Roh ME, Kiwanuka GN, Orikiriza P, Wade M, Parikh S, Mwanga-Amumpaire J, Boum Y. Evaluation of the Deki Reader™, an automated RDT reader and data management device, in a household survey setting in low malaria endemic southwestern Uganda. Malaria Journal 2017, 16: 449. PMID: 29115991, PMCID: PMC5678817, DOI: 10.1186/s12936-017-2094-3.Peer-Reviewed Original ResearchConceptsRapid diagnostic testsDeki ReaderCross-sectional surveySouthwestern UgandaPlasmodium falciparum casesEffective malaria control toolsHealth center settingMalaria transmission intensityOverall percent agreementMalaria control toolsGold standard microscopyResource-constrained settingsFalciparum casesBackgroundEarly diagnosisAdequate battery lifeMalaria casesBlood samplesMalaria diagnosisSectional surveyResultsThe sensitivityPercent agreementDiagnostic testsCenter settingDiagnostic performanceConclusionsThe findings
2016
Screening for Glucose-6-Phosphate Dehydrogenase Deficiency Using Three Detection Methods: A Cross-Sectional Survey in Southwestern Uganda.
Roh ME, Oyet C, Orikiriza P, Wade M, Mwanga-Amumpaire J, Boum Y, Kiwanuka GN, Parikh S. Screening for Glucose-6-Phosphate Dehydrogenase Deficiency Using Three Detection Methods: A Cross-Sectional Survey in Southwestern Uganda. American Journal Of Tropical Medicine And Hygiene 2016, 95: 1094-1099. PMID: 27672207, PMCID: PMC5094223, DOI: 10.4269/ajtmh.16-0552.Peer-Reviewed Original ResearchMeSH KeywordsChild, PreschoolCross-Sectional StudiesDiagnostic Tests, RoutineFemaleGene FrequencyGlucosephosphate DehydrogenaseGlucosephosphate Dehydrogenase DeficiencyHumansInfantMalariaMalaria, FalciparumMalaria, VivaxMalePoint-of-Care SystemsPrevalencePrimaquineRural PopulationSensitivity and SpecificityUgandaUrban PopulationConceptsG6PDd prevalenceGlucose-6-phosphate dehydrogenase deficiencyDehydrogenase deficiencySingle-dose primaquinePlasmodium falciparum transmissionSouthwestern UgandaPlasmodium ovale infectionNegative predictive valueMonths of ageCross-sectional surveyViable screening testOvale infectionsDiagnostic modalitiesStandard quantitative assayLow prevalenceRadical curePlasmodium vivaxPredictive valueSectional surveyCare testScreening testPrevalenceSevere deficiencyPrimaquineEnzyme activityAsymptomatic Plasmodium Infections in Children in Low Malaria Transmission Setting, Southwestern Uganda - Volume 22, Number 8—August 2016 - Emerging Infectious Diseases journal - CDC
Roh ME, Oyet C, Orikiriza P, Wade M, Kiwanuka GN, Mwanga-Amumpaire J, Parikh S, Boum Y. Asymptomatic Plasmodium Infections in Children in Low Malaria Transmission Setting, Southwestern Uganda - Volume 22, Number 8—August 2016 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 2016, 22: 1494-1498. PMID: 27434741, PMCID: PMC4982177, DOI: 10.3201/eid2208.160619.Peer-Reviewed Original ResearchConceptsMicroscopy-positive samplesLow malaria transmission settingsInfectious Diseases journal - CDCAsymptomatic Plasmodium infectionsMalaria transmission settingsRapid diagnostic testsP. falciparum parasitesRoutine diagnostic testingP. ovale parasitesAsymptomatic childrenPlasmodium infectionPlasmodium malariaeP. malariaeTransmission settingsFalciparum parasitesDiagnostic testingDiagnostic testsMalariaeChildrenParasitesInfection