Evidence map›Paper›PMID 29526461›Full record

ArticleCell2018

A Circadian Clock in the Blood-Brain Barrier Regulates Xenobiotic Efflux.

Shirley L Zhang, Zhifeng Yue, Denice M Arnold, Gregory Artiushin, Amita Sehgal

Open access · bronzeAbstract read
In one paragraph

Article in Cell, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 141 papers.

0numbers the graph read from it
0cells of the map it votes in
141citing papers in PubMed
12.6field-weighted citation impact, top 1% 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

141 citing papers in PubMed, 248 citations in OpenAlex.

  1. Review
  2. Circadian Rhythms Time Seizure Severity inJournal of biological rhythms · 2026
    Article
  3. Article
  4. Review
  5. Temporal and Cell-Specific Regulation of Synaptic Homeostasis by the Chromatin Remodeler Chd1.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Endocytosis at the mouse blood brain barrier is elevated during sleep.bioRxiv : the preprint server for biology · 2026
    Article
  10. Article
  11. Regulation of Metabolic Rhythms by Glial Clocks.Journal of biological rhythms · 2026
    Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Review
  19. Review
  20. Review

81 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.

Shirley L ZhangCenter for Sleep and Circadian Neurobiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA; Chronobiology Program at Penn and Howard Hughes Medical Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Zhifeng YueChronobiology Program at Penn and Howard Hughes Medical Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Denice M ArnoldChronobiology Program at Penn and Howard Hughes Medical Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Gregory ArtiushinChronobiology Program at Penn and Howard Hughes Medical Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Amita SehgalCenter for Sleep and Circadian Neurobiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA; Chronobiology Program at Penn and Howard Hughes Medical Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address: amita@pennmedicine.upenn.edu.
Howard Hughes Medical Institute · US

Funding

TRAINING PROGRAM/RESPIRATORY NEUROBIOLOGY AND SLEEPT32HL007713 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI PACK, ALLAN I · 1992 to 2022
$11.9M
Clinical research scholars programs in psychiatryR25MH060490 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI EVANS, DWIGHT L. · 1999 to 2013
$3.5M
Cycling in a circadian circuitR37NS048471 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SEHGAL, AMITA · 2015 to 2021
$2.7M
Howard Hughes Medical InstituteNHLBI NIH HHS T32 HL007713NIMH NIH HHS R25 MH060490NINDS NIH HHS R37 NS048471
6 · The paper itself

Abstract

Endogenous circadian rhythms are thought to modulate responses to external factors, but mechanisms that confer time-of-day differences in organismal responses to environmental insults/therapeutic treatments are poorly understood. Using a xenobiotic, we find that permeability of the Drosophila "blood"-brain barrier (BBB) is higher at night. The permeability rhythm is driven by circadian regulation of efflux and depends on a molecular clock in the perineurial glia of the BBB, although efflux transporters are restricted to subperineurial glia (SPG). We show that transmission of circadian signals across the layers requires cyclically expressed gap junctions. Specifically, during nighttime, gap junctions reduce intracellular magnesium ([Mg

Indexed as

Circadian ClocksAnimalsATP Binding Cassette Transporter, Subfamily B, Member 1Blood-Brain BarrierBrainConnexinsDrosophilaDrosophila ProteinsFemaleGap JunctionsMagnesiumNeurogliaPhenytoinRhodaminesSeizuresXenobioticsATP Binding Cassette Transporter, Subfamily B, Member 1ConnexinsDrosophila Proteinsinx2 protein, DrosophilaMagnesiumPhenytoinrhodamine BRhodaminesXenobioticsblood-brain barriercircadian rhythmDrosophilagap junctionperineurial gliasubperineurial gliaxenobiotic efflux

Identifiers

PMID29526461
PMCPMC5866247
OpenAlexW2790594012

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.