Evidence map›Paper›PMID 19230663›Full record

ArticleCurrent biology : CB2009

The GABA(A) receptor RDL acts in peptidergic PDF neurons to promote sleep in Drosophila.

Brian Y Chung, Valerie L Kilman, J Russel Keath, Jena L Pitman, Ravi Allada

Open access · bronzeAbstract read
In one paragraph

Article in Current biology : CB, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed
5.0field-weighted citation impact, top 3% 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

119 citing papers in PubMed, 199 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. iScience · 2026
    Article
  5. Article
  6. Article
  7. Fly into tranquility: GABA's role in Drosophila sleep.Current opinion in insect science · 2024
    Review
  8. A four-oscillator model of seasonally adapted morning and evening activities in Drosophila melanogaster.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2024
    Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Frontiers in neuroscience · 2023
    Article
  15. A phosphorylation-deficient mutant ofFrontiers in neuroscience · 2023
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

59 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Brian Y ChungDepartment of Neurobiology and Physiology, Northwestern University, Evanston, IL 60208, USA.
Valerie L Kilman
J Russel Keath
Jena L Pitman
Ravi Allada
Northwestern University · US

Funding

TRAINING GRANT IN SLEEP RESEARCHT32HL007909 · NHLBI · NORTHWESTERN UNIVERSITY · PI FRED W TUREK, Phyllis C. Zee · 1998 to 2026
$9.2M
Function of Casein Kinase 2 in the Circadian ClockR01MH067870 · NIMH · NORTHWESTERN UNIVERSITY · PI ALLADA, RAVI · 2003 to 2007
$1.7M
Intercellular Signaling in the Circadian ClockR01NS059042 · NINDS · NORTHWESTERN UNIVERSITY · PI ALLADA, RAVI · 2008 to 2012
$1.6M
Function of the Novel Ion Channel narrow abdomen in Daily RhythmsR01NS052903 · NINDS · NORTHWESTERN UNIVERSITY · PI ALLADA, RAVI · 2005 to 2008
$1.3M
The Molecular and Neural Mechanisms of Circadian Clock Function in SleepF31NS062551 · NINDS · NORTHWESTERN UNIVERSITY · PI CHUNG, BRIAN Y · 2008 to 2010
$61k
NHLBI NIH HHS T32 HL007909NHLBI NIH HHS T32HL07909NIMH NIH HHS MH067870NIMH NIH HHS R01 MH067870NINDS NIH HHS F31 NS062551NINDS NIH HHS F31NS062551NINDS NIH HHS R01 NS052903NINDS NIH HHS R01 NS059042
6 · The paper itself

Abstract

Sleep is regulated by a circadian clock that times sleep and wake to specific times of day and a homeostat that drives sleep as a function of prior wakefulness. To analyze the role of the circadian clock, we have used the fruit fly Drosophila. Flies display the core behavioral features of sleep, including relative immobility, elevated arousal thresholds, and homeostatic regulation. We assessed sleep-wake modulation by a core set of circadian pacemaker neurons that express the neuropeptide PDF. We find that disruption of PDF function increases sleep during the late night in light:dark and the first subjective day of constant darkness. Flies deploy genetic and neurotransmitter pathways to regulate sleep that are similar to those of their mammalian counterparts, including GABA. We find that RNA interference-mediated knockdown of the GABA(A) receptor gene, Resistant to dieldrin (Rdl), in PDF neurons reduces sleep, consistent with a role for GABA in inhibiting PDF neuron function. Patch-clamp electrophysiology reveals GABA-activated picrotoxin-sensitive chloride currents on PDF+ neurons. In addition, RDL is detectable most strongly on the large subset of PDF+ pacemaker neurons. These results suggest that GABAergic inhibition of arousal-promoting PDF neurons is an important mode of sleep-wake regulation in vivo.

Indexed as

AnimalsBiological ClocksCircadian RhythmDrosophila melanogasterDrosophila ProteinsGene Knockdown TechniquesNeuropeptidesPatch-Clamp TechniquesReceptors, GABA-ARNA InterferenceSleepDrosophila ProteinsNeuropeptidespdf protein, DrosophilaRdl protein, DrosophilaReceptors, GABA-A

Identifiers

PMID19230663
PMCPMC3209479
OpenAlexW1981225280

What OpenQuestion holds

Textmetadata
LicenceTDM
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.