Evidence map›Paper›PMID 30642347›Full record

ArticleMalaria journal2019

MiRNA-146a polymorphism increases the odds of malaria in pregnancy.

Welmoed van Loon, Prabhanjan P Gai, Lutz Hamann, George Bedu-Addo, Frank P Mockenhaupt

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 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 24% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. A Potential Regulatory Network of Selected Human Erythrocytic miRNAs withMicroRNA (Shariqah, United Arab Emirates) · 2025
    Article
  4. Review
  5. Review
  6. MiRNA-146a-A Key Player in Immunity and Diseases.International journal of molecular sciences · 2023
    Review
  7. Non-coding RNAs in malaria infection.Wiley interdisciplinary reviews. RNA · 2022
    Review
  8. MiRNA: Biological Regulator in Host-Parasite Interaction during Malaria Infection.International journal of environmental research and public health · 2022
    Review
  9. Review
  10. Harnessing the Potential of miRNAs in Malaria Diagnostic and Prevention.Frontiers in cellular and infection microbiology · 2021
    Review
  11. Review
  12. Review
  13. Article
  14. MiRNA-146a Polymorphism Was Not Associated with Malaria in Southern India.The American journal of tropical medicine and hygiene · 2020
    Article
  15. Review
  16. Review
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

5 authors at 2 institutions in 2 countries.

Welmoed van LoonInstitute of Tropical Medicine and International Health, Charité-University Medicine Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany. welmoed.vanloon@gmail.com.ORCID http://orcid.org/0000-0003-3331-3997
Prabhanjan P GaiInstitute of Tropical Medicine and International Health, Charité-University Medicine Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
Lutz HamannInstitute of Microbiology and Infection Immunology, Charité-University Medicine Berlin, Hindenburgdamm 30, 12200, Berlin, Germany.
George Bedu-AddoKomfo Anokye Teaching Hospital, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Frank P MockenhauptInstitute of Tropical Medicine and International Health, Charité-University Medicine Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
Charité - Universitätsmedizin Berlin · DEKomfo Anokye Teaching Hospital · GH

Funding

Charité - Universitätsmedizin Berlin 2000-512Charité - Universitätsmedizin Berlin 2001-613Deutsche Forschungsgemeinschaft GRK1673Deutsche Forschungsgemeinschaft GRK2046/C7
6 · The paper itself

Abstract

backgroundPlasmodium falciparum infection during pregnancy is a major cause of poor maternal health, adverse foetal outcome and infant mortality in sub-Saharan Africa. Genetic disposition is involved in susceptibility to malaria in pregnancy and its manifestation. MicroRNAs (miRNAs) influence gene regulation including that of innate immune responses. A miRNA-146a rs2910164 G > C single nucleotide polymorphism (SNP) has been associated with increased risks of several diseases, but no data as to malaria are available.

methodsThe association between miRNA-146a rs2910164 and P. falciparum infection among 509 Ghanaian women attending antenatal care (ANC) and 296 delivering Ghanaian primiparae was investigated. Malaria parasites were diagnosed by microscopy and PCR. Leukocyte-associated hemozoin in placental samples was recorded as well. Proportions were compared between groups by Fisher's exact test, and logistic regression models were used to adjust for possible confounders.

resultsBy PCR, P. falciparum infection was detected in 63% and 67% of ANC attendees and delivering primiparae, respectively. In both groups, two in three women were either heterozygous or homozygous for miRNA-146a rs2910164. Among ANC attendees, homozygosity conferred increased odds of infection (adjusted odds ratio (aOR), 2.3; 95% CI, 1.3-4.0), which was pronounced among primigravidae (aOR, 5.8; 95% CI, 1.6-26) but only marginal in multigravidae. Likewise, homozygosity for miRNA-146a rs2910164 in primiparae increased the odds of past or present placental P. falciparum infection almost six-fold (aOR, 5.9; 95% CI, 2.1-18).

conclusionsThese results indicate that SNP rs2910164 G > C is associated with increased odds for P. falciparum infection in first-time pregnant women who are considered to lack sufficient acquired immune responses against pregnancy-specific strains of P. falciparum. These findings suggest that miRNA-146a is involved in protective malarial immunity, and specifically in the innate component.

Indexed as

Genetic Predisposition to DiseasePolymorphism, Single NucleotideAdaptive ImmunityAdultFemaleGhanaHeterozygoteHumansImmunity, InnateLogistic ModelsMalaria, FalciparumMicroRNAsOdds RatioPlasmodium falciparumPolymerase Chain ReactionPregnancyMicroRNAsMIRN146 microRNA, humanInnate immunityMalariaMiRNA-146aPlasmodium falciparumPolymorphismPregnancy

Identifiers

PMID30642347
PMCPMC6332577
OpenAlexW2915118865

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.