Evidence map›Paper›PMID 33674914›Full record

ArticleHandbook of experimental pharmacology2021

Organic Cation Transporter (OCT/OCTN) Expression at Brain Barrier Sites: Focus on CNS Drug Delivery.

Robert D Betterton, Thomas P Davis, Patrick T Ronaldson

Open access · greenAbstract read
In one paragraph

Article in Handbook of experimental pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
23.7field-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

22 citing papers in PubMed, 28 citations in OpenAlex.

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  8. Metabolite transport across central nervous system barriers.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
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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.

Robert D BettertonDepartment of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA.
Thomas P DavisDepartment of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA.
Patrick T RonaldsonDepartment of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, USA. pronald@arizona.edu.
University of Arizona · US

Funding

Targeting Blood-Brain Barrier Transporters to Treat Ischemic StrokeR01NS084941 · NINDS · UNIVERSITY OF ARIZONA · PI RONALDSON, PATRICK THOMAS · 2014 to 2024
$4.4M
Increased CNS Opioid Exposure by an Acetaminophen-Induced Blood-Brain Barrier MechanismR01DA051812 · NIDA · UNIVERSITY OF ARIZONA · PI DAVIS, THOMAS PAUL, RONALDSON, PATRICK THOMAS · 2020 to 2024
$2.8M
NIDA NIH HHS R01 DA051812NINDS NIH HHS R01 NS084941
6 · The paper itself

Abstract

Therapeutic delivery to the central nervous system (CNS) continues to be a considerable challenge in the pharmacological treatment and management of neurological disorders. This is primarily due to the physiological and biochemical characteristics of brain barrier sites (i.e., blood-brain barrier (BBB), blood-cerebrospinal fluid barrier (BCSFB)). Drug uptake into brain tissue is highly restricted by expression of tight junction protein complexes and adherens junctions between brain microvascular endothelial cells and choroid plexus epithelial cells. Additionally, efflux transport proteins expressed at the plasma membrane of these same endothelial and epithelial cells act to limit CNS concentrations of centrally acting drugs. In contrast, facilitated diffusion via transporter proteins allows for substrate-specific flux of molecules across the plasma membrane, directing drug uptake into the CNS. Organic Cation Transporters (OCTs) and Novel Organic Cation Transporters (OCTNs) are two subfamilies of the solute carrier 22 (SLC22) family of proteins that have significant potential to mediate delivery of positively charged, zwitterionic, and uncharged therapeutics. While expression of these transporters has been well characterized in peripheral tissues, the functional expression of OCT and OCTN transporters at CNS barrier sites and their role in delivery of therapeutic drugs to molecular targets in the brain require more detailed analysis. In this chapter, we will review current knowledge on localization, function, and regulation of OCT and OCTN isoforms at the BBB and BCSFB with a particular emphasis on how these transporters can be utilized for CNS delivery of therapeutic agents.

Indexed as

Endothelial CellsPharmaceutical PreparationsBiological TransportBlood-Brain BarrierBrainCationsCationsPharmaceutical PreparationsBlood–Brain Barrier (BBB)Blood–Cerebrospinal Fluid Barrier (BCSFB)Brain parenchymal transportersCNS drug deliveryOrganic cation transport

Identifiers

PMID33674914
PMCPMC8603467
OpenAlexW3135305810

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.