Persistent and multiclonal malaria parasite dynamics despite extended artemether-lumefantrine treatment in children.


Journal

Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555

Informations de publication

Date de publication:
07 May 2024
Historique:
received: 12 10 2023
accepted: 24 04 2024
medline: 8 5 2024
pubmed: 8 5 2024
entrez: 7 5 2024
Statut: epublish

Résumé

Standard diagnostics used in longitudinal antimalarial studies are unable to characterize the complexity of submicroscopic parasite dynamics, particularly in high transmission settings. We use molecular markers and amplicon sequencing to characterize post-treatment stage-specific malaria parasite dynamics during a 42 day randomized trial of 3- versus 5 day artemether-lumefantrine in 303 children with and without HIV (ClinicalTrials.gov number NCT03453840). The prevalence of parasite-derived 18S rRNA is >70% in children throughout follow-up, and the ring-stage marker SBP1 is detectable in over 15% of children on day 14 despite effective treatment. We find that the extended regimen significantly lowers the risk of recurrent ring-stage parasitemia compared to the standard 3 day regimen, and that higher day 7 lumefantrine concentrations decrease the probability of ring-stage parasites in the early post-treatment period. Longitudinal amplicon sequencing reveals remarkably dynamic patterns of multiclonal infections that include new and persistent clones in both the early post-treatment and later time periods. Our data indicate that post-treatment parasite dynamics are highly complex despite efficacious therapy, findings that will inform strategies to optimize regimens in the face of emerging partial artemisinin resistance in Africa.

Identifiants

pubmed: 38714692
doi: 10.1038/s41467-024-48210-7
pii: 10.1038/s41467-024-48210-7
doi:

Substances chimiques

Artemether, Lumefantrine Drug Combination 0
Antimalarials 0
RNA, Ribosomal, 18S 0
Artemisinins 0

Banques de données

ClinicalTrials.gov
['NCT03453840']

Types de publication

Journal Article Research Support, Non-U.S. Gov't Research Support, N.I.H., Extramural Randomized Controlled Trial

Langues

eng

Sous-ensembles de citation

IM

Pagination

3817

Subventions

Organisme : NICHD NIH HHS
ID : R01 HD068174
Pays : United States
Organisme : NICHD NIH HHS
ID : R21 HD110110
Pays : United States
Organisme : NICHD NIH HHS
ID : F31 HD109060
Pays : United States

Informations de copyright

© 2024. The Author(s).

Références

WHO. World Malaria Report. https://www.who.int/teams/global-malaria-programme/reports/world-malaria-report-2023 (2023).
WHO. WHO Guidelines for Malaria https://www.who.int/publications/i/item/guidelines-for-malaria (2023).
Ashley, E. A. et al. Spread of artemisinin resistance in plasmodium falciparum malaria. N. Engl. J. Med. 371, 411–423 (2014).
pubmed: 25075834 pmcid: 4143591 doi: 10.1056/NEJMoa1314981
Uwimana, A. et al. Emergence and clonal expansion of in vitro artemisinin-resistant plasmodium falciparum kelch13 R561H mutant parasites in Rwanda. Nat. Med. 26, 1602–1608 (2020).
pubmed: 32747827 pmcid: 7541349 doi: 10.1038/s41591-020-1005-2
Balikagala, B. et al. Evidence of artemisinin-resistant malaria in Africa. N. Engl. J. Med. 385, 1163–1171 (2021).
pubmed: 34551228 doi: 10.1056/NEJMoa2101746
Mihreteab, S. et al. Increasing prevalence of artemisinin-resistant HRP2-negative malaria in eritrea. N. Engl. J. Med. 389, 1191–1202 (2023).
pubmed: 37754284 pmcid: 10539021 doi: 10.1056/NEJMoa2210956
Uwimana, A. et al. Association of plasmodium falciparum kelch13 R561H genotypes with delayed parasite clearance in rwanda: an open-label, single-arm, multicentre, therapeutic efficacy study. Lancet Infect. Dis. 21, 1120–1128 (2021).
pubmed: 33864801 pmcid: 10202849 doi: 10.1016/S1473-3099(21)00142-0
de Roode, J. C. et al. Virulence and competitive ability in genetically diverse malaria infections. Proc. Natl Acad. Sci. USA 102, 7624–7628 (2005).
pubmed: 15894623 pmcid: 1140419 doi: 10.1073/pnas.0500078102
Jaki, T., Parry, A., Winter, K. & Hastings, I. Analysing malaria drug trials on a per-individual or per-clone basis: a comparison of methods. Stat. Med. 32, 3020–3038 (2013).
pubmed: 23258694 doi: 10.1002/sim.5706
Eldh, M. et al. Multiplicity of asymptomatic plasmodium falciparum infections and risk of clinical malaria: a systematic review and pooled analysis of individual participant data. J. Infect. Dis. 221, 775–785 (2020).
pubmed: 31585009 doi: 10.1093/infdis/jiz510
Tusting, L. S., Bousema, T., Smith, D. L. & Drakeley, C. Measuring changes in plasmodium falciparum transmission: precision, accuracy and costs of metrics. Adv. Parasitol. 84, 151–208 (2014).
pubmed: 24480314 pmcid: 4847140 doi: 10.1016/B978-0-12-800099-1.00003-X
Pacheco, M. A. et al. Malaria in venezuela: changes in the complexity of infection reflects the increment in transmission intensity. Malar. J. 19, 176 (2020).
pubmed: 32380999 pmcid: 7206825 doi: 10.1186/s12936-020-03247-z
Sondo, P. et al. Determinants of Plasmodium falciparum multiplicity of infection and genetic diversity in Burkina Faso. Parasit. Vectors 13, 427 (2020).
pubmed: 32819420 pmcid: 7441709 doi: 10.1186/s13071-020-04302-z
Jones, S. et al. Should deep-sequenced amplicons become the new gold standard for analyzing malaria drug clinical trials? Antimicrob. Agents Chemother. 65, e0043721 (2021).
pubmed: 34252299 doi: 10.1128/AAC.00437-21
Aydemir, O. et al. Drug-resistance and population structure of plasmodium falciparum across the democratic republic of congo using high-throughput molecular inversion probes. J. Infect. Dis. 218, 946–955 (2018).
pubmed: 29718283 pmcid: 6093412 doi: 10.1093/infdis/jiy223
Carrasquilla, M. et al. Barcoding genetically distinct plasmodium falciparum strains for comparative assessment of fitness and antimalarial drug resistance. mBio 13, e0093722 (2022).
pubmed: 35972144 doi: 10.1128/mbio.00937-22
Daniels, R. et al. A general SNP-based molecular barcode for plasmodium falciparum identification and tracking. Malar. J. 7, 223 (2008).
pubmed: 18959790 pmcid: 2584654 doi: 10.1186/1475-2875-7-223
Lerch, A. et al. Longitudinal tracking and quantification of individual plasmodium falciparum clones in complex infections. Sci. Rep. 9, 3333 (2019).
pubmed: 30833657 pmcid: 6399284 doi: 10.1038/s41598-019-39656-7
Lerch, A. et al. Development of amplicon deep sequencing markers and data analysis pipeline for genotyping multi-clonal malaria infections. BMC Genomics 18, 864 (2017).
pubmed: 29132317 pmcid: 5682641 doi: 10.1186/s12864-017-4260-y
Mensah, B. A. et al. Antimalarial drug resistance profiling of plasmodium falciparum infections in ghana using molecular inversion probes and next-generation sequencing. Antimicrob. Agents Chemother. 64, e01423-19 (2020).
Moser, K. A. et al. Describing the current status of plasmodium falciparum population structure and drug resistance within mainland tanzania using molecular inversion probes. Mol. Ecol. 30, 100–113 (2021).
pubmed: 33107096 doi: 10.1111/mec.15706
Talundzic E. et al. Next-generation sequencing and bioinformatics protocol for malaria drug resistance marker surveillance. Antimicrob. Agents Chemother. 62, e02474-17 (2018).
Felger, I., Snounou, G., Hastings, I., Moehrle, J. J. & Beck, H. P. PCR correction strategies for malaria drug trials: updates and clarifications. Lancet Infect. Dis. 20, e20–e25 (2020).
pubmed: 31540841 doi: 10.1016/S1473-3099(19)30426-8
Organization W. H. Methods and Techniques for Clinical Trials on Antimalarial Drug Efficacy: Genotyping to Identify Parasite Populations. https://www.who.int/publications/i/item/9789241596305 (2007).
Murphy, S. C. et al. Malaria diagnostics in clinical trials. Am. J. Trop. Med Hyg. 89, 824–839 (2013).
pubmed: 24062484 pmcid: 3820323 doi: 10.4269/ajtmh.12-0675
White, M. T. et al. Plasmodium vivax and plasmodium falciparum infection dynamics: re-infections, recrudescences and relapses. Malar. J. 17, 170 (2018).
pubmed: 29665803 pmcid: 5905131 doi: 10.1186/s12936-018-2318-1
Goncalves, B. P. et al. Examining the human infectious reservoir for plasmodium falciparum malaria in areas of differing transmission intensity. Nat. Commun. 8, 1133 (2017).
pubmed: 29074880 pmcid: 5658399 doi: 10.1038/s41467-017-01270-4
Katrak, S. et al. Clinical consequences of submicroscopic malaria parasitaemia in Uganda. Malar. J. 17, 67 (2018).
pubmed: 29402282 pmcid: 5800031 doi: 10.1186/s12936-018-2221-9
Nyunt, M. H. et al. Molecular evidence of drug resistance in asymptomatic malaria infections, Myanmar, 2015. Emerg. Infect. Dis. 23, 517–520 (2017).
pubmed: 28221121 pmcid: 5382746 doi: 10.3201/eid2303.161363
Ouedraogo, A. L. et al. Dynamics of the human infectious reservoir for malaria determined by mosquito feeding assays and ultrasensitive malaria diagnosis in Burkina Faso. J. Infect. Dis. 213, 90–99 (2016).
pubmed: 26142435 doi: 10.1093/infdis/jiv370
Kamau, E. et al. Development of a highly sensitive genus-specific quantitative reverse transcriptase real-time PCR assay for detection and quantitation of plasmodium by amplifying RNA and DNA of the 18S rRNA genes. J. Clin. Microbiol. 49, 2946–2953 (2011).
pubmed: 21653767 pmcid: 3147742 doi: 10.1128/JCM.00276-11
Adams, M. et al. An ultrasensitive reverse transcription polymerase chain reaction assay to detect asymptomatic low-density plasmodium falciparum and plasmodium vivax infections in small volume blood samples. Malar. J. 14, 520 (2015).
pubmed: 26701778 pmcid: 4690410 doi: 10.1186/s12936-015-1038-z
Hofmann, N. et al. Ultra-sensitive detection of plasmodium falciparum by amplification of multi-copy subtelomeric targets. PLoS Med. 12, e1001788 (2015).
pubmed: 25734259 pmcid: 4348198 doi: 10.1371/journal.pmed.1001788
Zainabadi, K. et al. A novel method for extracting nucleic acids from dried blood spots for ultrasensitive detection of low-density plasmodium falciparum and plasmodium vivax infections. Malar. J. 16, 377 (2017).
pubmed: 28923054 pmcid: 5604154 doi: 10.1186/s12936-017-2025-3
Beshir, K. B. et al. Residual Plasmodium falciparum parasitemia in Kenyan children after artemisinin-combination therapy is associated with increased transmission to mosquitoes and parasite recurrence. J. Infect. Dis. 208, 2017–2024 (2013).
pubmed: 23945376 pmcid: 3836468 doi: 10.1093/infdis/jit431
Chang, H. H. et al. Persistence of plasmodium falciparum parasitemia after artemisinin combination therapy: evidence from a randomized trial in Uganda. Sci. Rep. 6, 26330 (2016).
pubmed: 27197604 pmcid: 4873826 doi: 10.1038/srep26330
Tadesse, F. G. et al. Molecular markers for sensitive detection of plasmodium falciparum asexual stage parasites and their application in a malaria clinical trial. Am. J. Trop. Med Hyg. 97, 188–198 (2017).
pubmed: 28719294 pmcid: 5508903 doi: 10.4269/ajtmh.16-0893
Mahamar, A. et al. Persistence of mRNA indicative of plasmodium falciparum ring-stage parasites 42 days after artemisinin and non-artemisinin combination therapy in naturally infected Malians. Malar. J. 20, 34 (2021).
pubmed: 33422068 pmcid: 7797096 doi: 10.1186/s12936-020-03576-z
Beshir, K. B. et al. Persistent submicroscopic plasmodium falciparum parasitemia 72 hours after treatment with artemether-lumefantrine predicts 42-day treatment failure in Mali and Burkina Faso. Antimicrob. Agents Chemother. 65, e0087321 (2021).
pubmed: 34060901 doi: 10.1128/AAC.00873-21
Peatey, C. et al. Dormant plasmodium falciparum parasites in human infections following artesunate therapy. J. Infect. Dis. 223, 1631–1638 (2021).
pubmed: 32901248 doi: 10.1093/infdis/jiaa562
Witkowski, B. et al. Increased tolerance to artemisinin in plasmodium falciparum is mediated by a quiescence mechanism. Antimicrob. Agents Chemother. 54, 1872–1877 (2010).
pubmed: 20160056 pmcid: 2863624 doi: 10.1128/AAC.01636-09
Whalen, M. E. et al. The impact of extended treatment with artemether-iumefantrine on antimalarial exposure and reinfection risks in Ugandan children with uncomplicated malaria: a randomized controlled trial. Clin. Infect. Dis. 76, 443–452 (2023).
pubmed: 36130191 doi: 10.1093/cid/ciac783
WorldWide Antimalarial Resistance Network Lumefantrine PKPDSG. Artemether-lumefantrine treatment of uncomplicated plasmodium falciparum malaria: a systematic review and meta-analysis of day 7 lumefantrine concentrations and therapeutic response using individual patient data. BMC Med. 13, 227 (2015).
doi: 10.1186/s12916-015-0456-7
Chavtur, C. et al. Plasmodium 18S ribosomal RNA biomarker clearance after food and drug administration-approved antimalarial treatment in controlled human malaria infection trials. Open Forum Infect. Dis. 10, ofad202 (2023).
pubmed: 37265668 pmcid: 10230565 doi: 10.1093/ofid/ofad202
Tun, K. M. et al. Effectiveness and safety of 3 and 5 day courses of artemether-lumefantrine for the treatment of uncomplicated falciparum malaria in an area of emerging artemisinin resistance in Myanmar. Malar. J. 17, 258 (2018).
pubmed: 29996844 pmcid: 6042398 doi: 10.1186/s12936-018-2404-4
Beshir, K. B. et al. Measuring the efficacy of anti-malarial drugs in vivo: quantitative PCR measurement of parasite clearance. Malar. J. 9, 312 (2010).
pubmed: 21054863 pmcid: 2992070 doi: 10.1186/1475-2875-9-312
Jarra, W. & Snounou, G. Only viable parasites are detected by PCR following clearance of rodent malarial infections by drug treatment or immune responses. Infect. Immun. 66, 3783–3787 (1998).
pubmed: 9673262 pmcid: 108417 doi: 10.1128/IAI.66.8.3783-3787.1998
Prina, E., Roux, E., Mattei, D. & Milon, G. Leishmania DNA is rapidly degraded following parasite death: an analysis by microscopy and real-time PCR. Microbes Infect. 9, 1307–1315 (2007).
pubmed: 17890124 doi: 10.1016/j.micinf.2007.06.005
Haanshuus, C. G. & Morch, K. Detection of remaining plasmodium DNA and gametocytes during follow up after curative malaria treatment among returned travellers in Norway. Malar. J. 19, 296 (2020).
pubmed: 32814587 pmcid: 7436973 doi: 10.1186/s12936-020-03367-6
Vafa Homann, M. et al. Detection of malaria parasites after treatment in travelers: a 12 months longitudinal study and statistical modelling analysis. EBioMedicine 25, 66–72 (2017).
pubmed: 29050948 pmcid: 5704054 doi: 10.1016/j.ebiom.2017.10.003
Teuscher, F. et al. Artemisinin-induced dormancy in plasmodium falciparum: duration, recovery rates, and implications in treatment failure. J. Infect. Dis. 202, 1362–1368 (2010).
pubmed: 20863228 doi: 10.1086/656476
Farnert, A., Snounou, G., Rooth, I. & Bjorkman, A. Daily dynamics of plasmodium falciparum subpopulations in asymptomatic children in a holoendemic area. Am. J. Trop. Med Hyg. 56, 538–547 (1997).
pubmed: 9180605 doi: 10.4269/ajtmh.1997.56.538
Nkhoma, S. C., Banda, R. L., Khoswe, S., Dzoole-Mwale, T. J. & Ward, S. A. Intra-host dynamics of co-infecting parasite genotypes in asymptomatic malaria patients. Infect. Genet Evol. 65, 414–424 (2018).
pubmed: 30145390 pmcid: 6219893 doi: 10.1016/j.meegid.2018.08.018
Barry, A. et al. Improved detectability of plasmodium falciparum clones with repeated sampling in incident and chronic infections in Burkina Faso. Am. J. Trop. Med Hyg. 106, 664–666 (2021).
pubmed: 34724629 pmcid: 8832917 doi: 10.4269/ajtmh.21-0493
Greenhouse, B., Dokomajilar, C., Hubbard, A., Rosenthal, P. J. & Dorsey, G. Impact of transmission intensity on the accuracy of genotyping to distinguish recrudescence from new infection in antimalarial clinical trials. Antimicrob. Agents Chemother. 51, 3096–3103 (2007).
pubmed: 17591848 pmcid: 2043236 doi: 10.1128/AAC.00159-07
Juliano, J. J., Gadalla, N., Sutherland, C. J. & Meshnick, S. R. The perils of PCR: can we accurately ‘correct’ antimalarial trials? Trends Parasitol. 26, 119–124 (2010).
pubmed: 20083436 pmcid: 2844636 doi: 10.1016/j.pt.2009.12.007
Messerli, C., Hofmann, N. E., Beck, H. P. & Felger, I. Critical evaluation of molecular monitoring in malaria drug efficacy trials and pitfalls of length-polymorphic markers. Antimicrob Agents Chemother. 61, e01500-16 (2016).
Gruenberg, M., Lerch, A., Beck, H. P. & Felger, I. Amplicon deep sequencing improves Plasmodium falciparum genotyping in clinical trials of antimalarial drugs. Sci. Rep. 9, 17790 (2019).
pubmed: 31780741 pmcid: 6883076 doi: 10.1038/s41598-019-54203-0
Kay, K. et al. Impact of drug exposure on resistance selection following artemether-lumefantrine treatment for malaria in children with and without HIV in Uganda. Clin. Pharm. Ther. 113, 660–669 (2023).
doi: 10.1002/cpt.2768
Laurens, M. B. et al. Revisiting co-trimoxazole prophylaxis for African adults in the era of antiretroviral therapy: a randomized controlled clinical trial. Clin. Infect. Dis. 73, 1058–1065 (2021).
pubmed: 33744963 pmcid: 8442771 doi: 10.1093/cid/ciab252
Manyando, C., Njunju, E. M., D’Alessandro, U. & Van Geertruyden, J. P. Safety and efficacy of co-trimoxazole for treatment and prevention of plasmodium falciparum malaria: a systematic review. PLoS One 8, e56916 (2013).
pubmed: 23451110 pmcid: 3579948 doi: 10.1371/journal.pone.0056916
Asua, V. et al. Changing prevalence of potential mediators of aminoquinoline, antifolate, and artemisinin resistance across Uganda. J. Infect. Dis. 223, 985–994 (2021).
pubmed: 33146722 doi: 10.1093/infdis/jiaa687
Conrad, M. D. et al. Evolution of partial resistance to artemisinins in malaria parasites in Uganda. N. Engl. J. Med 389, 722–732 (2023).
pubmed: 37611122 pmcid: 10513755 doi: 10.1056/NEJMoa2211803
Ehrlich, H. Y., Bei, A. K., Weinberger, D. M., Warren, J. L. & Parikh, S. Mapping partner drug resistance to guide antimalarial combination therapy policies in sub-saharan Africa. Proc. Natl Acad. Sci. USA 118, e2100685118 (2021).
Alegana, V. A. et al. Plasmodium falciparum parasite prevalence in East Africa: updating data for malaria stratification. PLoS Glob. Public Health 1, e0000014 (2021).
pubmed: 35211700 pmcid: 7612417 doi: 10.1371/journal.pgph.0000014
Nankabirwa, J. I. et al. Measures of malaria transmission, infection, and disease in an area bordering two districts with and without sustained indoor residual spraying of insecticide in Uganda. PLoS One 17, e0279464 (2022).
pubmed: 36584122 pmcid: 9803187 doi: 10.1371/journal.pone.0279464
Joice, R. et al. Inferring developmental stage composition from gene expression in human malaria. PLoS Comput Biol. 9, e1003392 (2013).
pubmed: 24348235 pmcid: 3861035 doi: 10.1371/journal.pcbi.1003392
Mideo, N. et al. A deep sequencing tool for partitioning clearance rates following antimalarial treatment in polyclonal infections. Evol. Med Public Health 2016, 21–36 (2016).
pubmed: 26817485 pmcid: 4753362 doi: 10.1093/emph/eov036
Miller, R. H. et al. A deep sequencing approach to estimate plasmodium falciparum complexity of infection (COI) and explore apical membrane antigen 1 diversity. Malar. J. 16, 490 (2017).
pubmed: 29246158 pmcid: 5732508 doi: 10.1186/s12936-017-2137-9
Callahan, B. J. et al. DADA2: High-resolution sample inference from Illumina amplicon data. Nat. Methods 13, 581–583 (2016).
pubmed: 27214047 pmcid: 4927377 doi: 10.1038/nmeth.3869
Early, A. M. et al. Detection of low-density plasmodium falciparum infections using amplicon deep sequencing. Malar. J. 18, 219 (2019).
pubmed: 31262308 pmcid: 6604269 doi: 10.1186/s12936-019-2856-1
Nabet, C. et al. Genetic diversity of plasmodium falciparum in human malaria cases in Mali. Malar. J. 15, 353 (2016).
pubmed: 27401016 pmcid: 4940954 doi: 10.1186/s12936-016-1397-0
Huang, L., Olson, A., Gingrich, D. & Aweeka, F. T. Determination of artemether and dihydroartemisinin in human plasma with a new hydrogen peroxide stabilization method. Bioanalysis 5, 1501–1506 (2013).
pubmed: 23795928 doi: 10.4155/bio.13.91
Huang, L., Li, X., Marzan, F., Lizak, P. S. & Aweeka, F. T. Determination of lumefantrine in small-volume human plasma by LC-MS/MS: using a deuterated lumefantrine to overcome matrix effect and ionization saturation. Bioanalysis 4, 157–166 (2012).
pubmed: 22250798 doi: 10.4155/bio.11.303

Auteurs

Justin Goodwin (J)

Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA.
Yale School of Medicine, New Haven, CT, USA.

Richard Kajubi (R)

Infectious Disease Research Collaboration, Kampala, Uganda.

Kaicheng Wang (K)

Yale Center for Analytical Sciences, Yale School of Public Health, New Haven, CT, USA.

Fangyong Li (F)

Yale Center for Analytical Sciences, Yale School of Public Health, New Haven, CT, USA.

Martina Wade (M)

Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA.

Francis Orukan (F)

Infectious Disease Research Collaboration, Kampala, Uganda.

Liusheng Huang (L)

University of California, San Francisco, San Francisco, CA, USA.

Meghan Whalen (M)

University of California, San Francisco, San Francisco, CA, USA.

Francesca T Aweeka (FT)

University of California, San Francisco, San Francisco, CA, USA.

Norah Mwebaza (N)

Infectious Disease Research Collaboration, Kampala, Uganda.
Department of Pharmacology and Therapeutics, Makerere University College of Health Sciences, Kampala, Uganda.

Sunil Parikh (S)

Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA. sunil.parikh@yale.edu.
Yale School of Medicine, New Haven, CT, USA. sunil.parikh@yale.edu.

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