Evidence map›Paper›PMID 26124142›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Drosophila circadian rhythms in seminatural environments: Summer afternoon component is not an artifact and requires TrpA1 channels.

Edward W Green, Emma K O'Callaghan, Celia N Hansen, Stefano Bastianello, Supriya Bhutani, Stefano Vanin, James Douglas Armstrong, Rodolfo Costa, Charalambos P Kyriacou

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. The physiological role of TRP channels in sleep and circadian rhythm.Journal of cellular and molecular medicine · 2024
    Review
  7. Article
  8. Article
  9. Frontiers in neuroscience · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Frontiers in physiology · 2022
    Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Biology · 2020
    Article
  19. The Summer Is Coming:Frontiers in physiology · 2020
    Article
  20. Model and Non-model Insects in Chronobiology.Frontiers in behavioral neuroscience · 2020
    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

9 authors.

Edward W GreenDepartment of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom;
Emma K O'CallaghanActual Analytics, Edinburgh EH8 9LE, United Kingdom;
Celia N HansenDepartment of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom;
Stefano BastianelloVenetian Institute of Molecular Medicine, 35129 Padova, Italy;
Supriya BhutaniDepartment of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom;
Stefano VaninDepartment of Biology, University of Padova, Padova 35131, Italy.
James Douglas ArmstrongActual Analytics, Edinburgh EH8 9LE, United Kingdom;
Rodolfo CostaDepartment of Biology, University of Padova, Padova 35131, Italy.
Charalambos P KyriacouDepartment of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom; cpk@leicester.ac.uk.

Funding

Biotechnology and Biological Sciences Research Council BB/J005169/1National Centre for the Replacement, Refinement and Reduction of Animals in Research NC/C012201/1
6 · The paper itself

Abstract

Under standard laboratory conditions of rectangular light/dark cycles and constant warm temperature, Drosophila melanogaster show bursts of morning (M) and evening (E) locomotor activity and a "siesta" in the middle of the day. These M and E components have been critical for developing the neuronal dual oscillator model in which clock gene expression in key cells generates the circadian phenotype. However, under natural European summer conditions of cycling temperature and light intensity, an additional prominent afternoon (A) component that replaces the siesta is observed. This component has been described as an "artifact" of the TriKinetics locomotor monitoring system that is used by many circadian laboratories world wide. Using video recordings, we show that the A component is not an artifact, neither in the glass tubes used in TriKinetics monitors nor in open-field arenas. By studying various mutants in the visual and peripheral and internal thermo-sensitive pathways, we reveal that the M component is predominantly dependent on visual input, whereas the A component requires the internal thermo-sensitive channel transient receptor potential A1 (TrpA1). Knockdown of TrpA1 in different neuronal groups reveals that the reported expression of TrpA1 in clock neurons is unlikely to be involved in generating the summer locomotor profile, suggesting that other TrpA1 neurons are responsible for the A component. Studies of circadian rhythms under seminatural conditions therefore provide additional insights into the molecular basis of circadian entrainment that would otherwise be lost under the usual standard laboratory protocols.

Indexed as

Circadian RhythmAnimalsDrosophilaDrosophila ProteinsIon ChannelsNeuronsTRPA1 Cation ChannelTRPC Cation ChannelsDrosophila ProteinsIon ChannelsTRPA1 Cation ChannelTrpA1 protein, DrosophilaTRPC Cation ChannelsafternoonbehaviorcircadianDrosophilalocomotor

Identifiers

PMID26124142
PMCPMC4507215

What OpenQuestion holds

Textmetadata
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.