Evidence map›Paper›PMID 32781954›Full record

ArticleProceedings. Biological sciences2020

Host circadian clocks do not set the schedule for the within-host replication of malaria parasites.

Aidan J O'Donnell, Kimberley F Prior, Sarah E Reece

Open access · hybridAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

17 citing papers in PubMed, 27 citations in OpenAlex.

  1. Circadian considerations in antimicrobials.European journal of clinical pharmacology · 2026
    Review
  2. Article
  3. Review
  4. Phenotypic and fitness consequences of plasticity in the rhythmic replication of malaria parasites.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  5. Circadian rhythms: pervasive, and often times evasive.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  6. Immune regulation of host energy metabolism and periodicity of malaria parasites.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  7. Melatonin as a Circadian Marker forInternational journal of molecular sciences · 2024
    Review
  8. Article
  9. Article
  10. The parasite intraerythrocytic cycle and human circadian cycle are coupled during malaria infection.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  11. Review
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  13. Article
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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

3 authors at 1 institution in 1 country.

Aidan J O'DonnellInstitute of Evolutionary Biology, and Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
Kimberley F PriorInstitute of Evolutionary Biology, and Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
Sarah E ReeceInstitute of Evolutionary Biology, and Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
Centre for Immunity, Infection and Evolution · GB

Funding

Wellcome TrustWellcome Trust 202769/Z/16/ZWellcome Trust 204511/Z/16/Z
6 · The paper itself

Abstract

Circadian clocks coordinate organisms' activities with daily cycles in their environment. Parasites are subject to daily rhythms in the within-host environment, resulting from clock-control of host activities, including immune responses. Parasites also exhibit rhythms in their activities: the timing of within-host replication by malaria parasites is coordinated to host feeding rhythms. Precisely which host feeding-related rhythm(s) parasites align with and how this is achieved are unknown. Understanding rhythmic replication in malaria parasites matters because it underpins disease symptoms and fuels transmission investment. We test if rhythmicity in parasite replication is coordinated with the host's feeding-related rhythms and/or rhythms driven by the host's canonical circadian clock. We find that parasite rhythms coordinate with the time of day that hosts feed in both wild-type and clock-mutant hosts, whereas parasite rhythms become dampened in clock-mutant hosts that eat continuously. Our results hold whether infections are initiated with synchronous or with desynchronized parasites. We conclude that malaria parasite replication is coordinated to rhythmic host processes that are independent of the core-clock proteins PERIOD 1 and 2; most likely, a periodic nutrient made available when the host digests food. Thus, novel interventions could disrupt parasite rhythms to reduce their fitness, without interference by host clock-controlled homeostasis.

Indexed as

Circadian ClocksAnimalsCircadian RhythmHomeostasisHost-Parasite InteractionsMalariaParasitesPeriod Circadian ProteinsPlasmodium chabaudiPeriod Circadian Proteinscircadian rhythmclock mutantperiodicityPlasmodiumtranscriptional–translational feedback loop

Identifiers

PMID32781954
PMCPMC7575513
OpenAlexW3048787997

What OpenQuestion holds

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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.