Evidence map›Paper›PMID 28764709›Full record

ArticleMalaria journal2017

Antibody responses to two new Lactococcus lactis-produced recombinant Pfs48/45 and Pfs230 proteins increase with age in malaria patients living in the Central Region of Ghana.

Festus K Acquah, Evans K Obboh, Kwame Asare, Johnson N Boampong, Samuel Victor Nuvor, Susheel K Singh, Michael Theisen, Kim C Williamson, Linda Eva Amoah

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
  2. Magnitude and durability of ProC6C-AlOH/Matrix-MHuman vaccines & immunotherapeutics · 2025
    Trial
  3. Article
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  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Parasite epidemiology and control · 2023
    Article
  13. Article
  14. Article
  15. Review
  16. Cloning and Recombinant Protein Expression in Lactococcus lactis.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 3 countries.

Festus K AcquahNoguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana.
Evans K ObbohSchool of Medical Sciences, University of Cape Coast, Cape Coast, Ghana.
Kwame AsareDepartment of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana.
Johnson N BoampongDepartment of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana.
Samuel Victor NuvorDepartment of Microbiology and Immunology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana.
Susheel K SinghDepartment for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark.
Michael TheisenDepartment for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark.
Kim C WilliamsonLoyola University Chicago, Chicago, IL, USA.
Linda Eva AmoahNoguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana. lamoah@noguchi.ug.edu.gh.
University of Cape Coast · GHUniversity of Copenhagen · DKNoguchi Memorial Institute for Medical Research · GHUniformed Services University of the Health Sciences · USUniversity of Ghana · GH

Funding

Plasmodium falciparum gametocytogenesisR01AI069314 · NIAID · LOYOLA UNIVERSITY OF CHICAGO · PI WILLIAMSON, KIM C · 2007 to 2017
$2.8M
Contribution of Pfs48/45 to Malaria Transmission-Blocking ImmunityR03AI103638 · NIAID · LOYOLA UNIVERSITY OF CHICAGO · PI WILLIAMSON, KIM C · 2013 to 2014
$134k
NIAID NIH HHS R01 AI069314NIAID NIH HHS R03 AI103638
6 · The paper itself

Abstract

backgroundRecent advances in malaria control efforts have led to an increased number of national malaria control programmes implementing pre-elimination measures and demonstrated the need to develop new tools to track and control malaria transmission. Key to understanding transmission is monitoring the prevalence and immune response against the sexual stages of the parasite, known as gametocytes, which are responsible for transmission. Sexual-stage specific antigens, Pfs230 and Pfs48/45, have been identified and shown to be targets for transmission blocking antibodies, but they have been difficult to produce recombinantly in the absence of a fusion partner.

methodsRegions of Pfs48/45 and Pfs230 known to contain transmission blocking epitopes, 6C and C0, respectively, were produced in a Lactococcus lactis expression system and used in enzyme linked immunosorbent assays to determine the seroreactivity of 95 malaria patients living in the Central Region of Ghana.

resultsPfs48/45.6C and Pfs230.C0 were successfully produced in L. lactis in the absence of a fusion partner using a simplified purification scheme. Seroprevalence for L. lactis-produced Pfs48/45.6C and Pfs230.C0 in the study population was 74.7 and 72.8%, respectively.

conclusionsA significant age-dependent increase in antibody titers was observed, which suggests a vaccine targeting these antigens could be boosted during a natural infection in the field.

Indexed as

AdolescentAdultAge FactorsAntigens, BacterialChildChild, PreschoolFemaleGhanaHumansInfantLactococcus lactisMalaria, FalciparumMalaria VaccinesMaleMiddle AgedPlasmodium falciparumAntigens, BacterialMalaria VaccinesProtozoan ProteinsRecombinant ProteinsLactococcus lactisMalariaPfs230Pfs48/45SeropositiveTransmission-blocking

Identifiers

PMID28764709
PMCPMC5540549
OpenAlexW2740657077

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.