Evidence map›Paper›PMID 30044494›Full record

ArticleThe Journal of physiology2018

Insulin transport across the blood-brain barrier can occur independently of the insulin receptor.

Elizabeth M Rhea, Christian Rask-Madsen, William A Banks

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed
5.5field-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

87 citing papers in PubMed, 142 citations in OpenAlex.

  1. Journal of traditional and complementary medicine · 2026
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  9. Expanding the understanding of insulin resistance in brain and periphery.Trends in endocrinology and metabolism: TEM · 2026
    Review
  10. Transport Across the Blood-Brain Barrier.Advances in experimental medicine and biology · 2026
    Review
  11. Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
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27 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

3 authors at 2 institutions in 1 country.

Elizabeth M RheaResearch and Development, VA Puget Sound, Seattle, WA, USA.ORCID 0000-0001-8118-120X
Christian Rask-MadsenJoslin Diabetes Centre and Harvard Medical School, Boston, MA, USA.ORCID 0000-0002-8548-466X
William A BanksResearch and Development, VA Puget Sound, Seattle, WA, USA.
University of Puget Sound · USJoslin Diabetes Center · US

Funding

SPECIFICITY OF OXYGEN DNA DAMAGE AND MUTAGENESISP01AG001751 · NIA · UNIVERSITY OF WASHINGTON · PI PRUSKY, GLEN THOMAS · 1985 to 2021
$29.6M
GENETIC APPROACHES TO AGING RESEARCHT32AG000057 · NIA · UNIVERSITY OF WASHINGTON · PI RABINOVITCH, PETER S · 1985 to 2019
$14.2M
Intranasal Insulin in a Mouse Model of Alzheimer's DiseaseR01AG046619 · NIA · SEATTLE INST FOR BIOMEDICAL/CLINICAL RES · PI BANKS, WILLIAM A · 2014 to 2018
$2.4M
Endothelial cell insulin and increased intestinal tumor formation in obesityR21CA185196 · NCI · JOSLIN DIABETES CENTER · PI RASK-MADSEN, CHRISTIAN · 2014 to 2015
$396k
NIA NIH HHS P01 AG001751NIA NIH HHS R01 AG046619NIA NIH HHS T32 AG000057NIH HHS R21CA185196NIH HHS RO1AG046619NIH HHS T32AG000057
6 · The paper itself

Abstract

key pointsInsulin enters the brain from the blood via a saturable transport system. It is unclear how insulin is transported across the blood-brain barrier (BBB). Using two models of the signalling-related insulin receptor loss or inhibition, we show insulin transport can occur in vivo without the signalling-related insulin receptor. Insulin in the brain has multiple roles including acting as a metabolic regulator and improving memory. Understanding how insulin is transported across the BBB will aid in developing therapeutics to further increase CNS concentrations. ABSTRACT: A saturable system transports insulin from blood across the blood-brain barrier (BBB) and into the central nervous system. Whether or not the classic or signalling-related insulin receptor plays a role in mediating this transport in vivo is controversial. Here, we employed kinetics methods that distinguish between transport across the brain endothelial cell and reversible luminal surface receptor binding. Using a previously established line of mice with endothelial-specific loss of the signalling-related insulin receptor (EndoIRKO) or inhibiting the insulin receptor with the selective antagonist S961, we show insulin transport across the BBB is maintained. Rates of insulin transport were similar in all groups and transport was still saturable. Unlike transport, binding of insulin to the brain endothelial cell was decreased with the loss or inhibition of the signalling-related insulin receptor. These findings demonstrate that the signalling-related insulin receptor is not required for insulin transport across the BBB.

Indexed as

AnimalsBiological TransportBlood-Brain BarrierBrainCell Membrane PermeabilityEndothelial CellsInsulinMaleMiceMice, KnockoutPeptidesReceptor, InsulinInsulinPeptidesReceptor, InsulinS961 peptideblood-brain barrierinsulin receptorinsulin transport

Identifiers

PMID30044494
PMCPMC6166047
OpenAlexW2889923390

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.