Evidence map›Paper›PMID 31570113›Full record

ArticleMalaria journal2019

Human exposure to Anopheles farauti bites in the Solomon Islands is not associated with IgG antibody response to the gSG6 salivary protein of Anopheles gambiae.

Edgar J M Pollard, Catriona Patterson, Tanya L Russell, Alan Apairamo, Jance Oscar, Bruno Arcà, Chris Drakeley, Thomas R Burkot

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
3.3field-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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. eLife · 2021
    Pooled it
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  5. Review
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  11. Article
  12. IgG Antibody Responses to theFrontiers in cellular and infection microbiology · 2020
    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

8 authors at 3 institutions in 3 countries.

Edgar J M PollardAustralian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, 4870, Australia.
Catriona PattersonDepartment of Infection Biology, London School of Hygiene & Tropical Medicine, London, UK.
Tanya L RussellAustralian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, 4870, Australia.
Alan ApairamoNational Vector Borne Disease Control Program, Ministry of Health and Medical Services, Honiara, Solomon Islands.
Jance OscarNational Vector Borne Disease Control Program, Ministry of Health and Medical Services, Honiara, Solomon Islands.
Bruno ArcàDepartment of Public Health and Infectious Diseases, Division of Parasitology, Sapienza Università Di Roma, Rome, Italy.
Chris DrakeleyDepartment of Infection Biology, London School of Hygiene & Tropical Medicine, London, UK.
Thomas R BurkotAustralian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, 4870, Australia. tom.burkot@jcu.edu.au.ORCID http://orcid.org/0000-0002-8994-6729
Australian Institute of Tropical Health and Medicine · AULondon School of Hygiene & Tropical Medicine · GBSapienza University of Rome · IT

Funding

Australian Institute of Tropical Health and Medicine 15032Bill and Melinda Gates Foundation 45114National Institute of Allergy and Infectious Diseases, National Institutes of Health a U19AI08986
6 · The paper itself

Abstract

backgroundMosquito saliva elicits immune responses in humans following mosquito blood feeding. Detection of human antibodies recognizing the Anopheles gambiae salivary gland protein 6 (gSG6) or the gSG6-P1 peptide in residents of Africa, South America and Southeast Asia suggested the potential for these antibodies to serve as a universal marker to estimate human biting rates. Validating the utility of this approach requires concurrent comparisons of anopheline biting rates with antibodies to the gSG6 protein to determine the sensitivity and specificity of the assay for monitoring changes in vector populations. This study investigated whether seroprevalence of anti-gSG6 antibodies in humans reflected the relative exposure to Anopheles farauti bites in the Solomon Islands as estimated from sympatric human landing catches.

methodsHuman biting rates by An. farauti were estimated by landing catches at 10 sampling sites in each of 4 villages during the wet and dry seasons. Human serum samples from these same villages were also collected during the wet and dry seasons and analysed for antibody recognition of the gSG6 antigen by the Luminex xMAP

resultsIn this study in the Solomon Islands only 11% of people had very high anti-gSG6 antibody titres, while other individuals did not recognize gSG6 despite nightly exposures of up to 190 bites by An. farauti. Despite clear spatial differences in the human biting rates within and among villages, associations between anti-gSG6 antibody titres and biting rates were not found.

conclusionsFew studies to date have concurrently measured anopheline biting rates and the prevalence of human antibodies to gSG6. The lack of association between anti-gSG6 antibody titres and concurrently measured human biting rates suggests that the assay for human anti-gSG6 antibodies lacks sufficient sensitivity to be a biomarker of An. farauti exposure at an epidemiologically relevant scale. These findings imply that an improvement in the sensitivity of serology to monitor changes in anopheline biting exposure may require the use of saliva antigens from local anophelines, and this may be especially true for species more distantly related to the African malaria vector An. gambiae.

Indexed as

AnophelesAnimalsBiomarkersFemaleHumansImmunoglobulin GInsect Bites and StingsInsect ProteinsMelanesiaMosquito VectorsSalivaSalivary Proteins and PeptidesSeasonsSeroepidemiologic StudiesBiomarkersgSG6-P1 peptide, Anopheles gambiaeImmunoglobulin GInsect ProteinsSalivary Proteins and PeptidesAnopheles farautigSG6Human biting rateSaliva antigens

Identifiers

PMID31570113
PMCPMC6771112
OpenAlexW2979102564

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.