Evidence map›Paper›PMID 30208928›Full record

ArticleFluids and barriers of the CNS2018

Sex-specific differences in organic anion transporting polypeptide 1a4 (Oatp1a4) functional expression at the blood-brain barrier in Sprague-Dawley rats.

Hrvoje Brzica, Wazir Abdullahi, Bianca G Reilly, Patrick T Ronaldson

Open access · goldAbstract read
In one paragraph

Article in Fluids and barriers of the CNS, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.8field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
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  10. Regulation of Blood-Brain Barrier Transporters by Transforming Growth Factor-Drug metabolism and disposition: the biological fate of chemicals · 2022
    Article
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  17. Sexual differences in mitochondrial and related proteins in rat cerebral microvessels: A proteomic approach.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
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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

4 authors at 1 institution in 1 country.

Hrvoje BrzicaDepartment of Pharmacology, College of Medicine, University of Arizona, P.O. Box 245050, 1501 N. Campbell Avenue, Tucson, AZ, 85724-5050, USA.
Wazir AbdullahiDepartment of Pharmacology, College of Medicine, University of Arizona, P.O. Box 245050, 1501 N. Campbell Avenue, Tucson, AZ, 85724-5050, USA.
Bianca G ReillyDepartment of Pharmacology, College of Medicine, University of Arizona, P.O. Box 245050, 1501 N. Campbell Avenue, Tucson, AZ, 85724-5050, USA.
Patrick T RonaldsonDepartment of Pharmacology, College of Medicine, University of Arizona, P.O. Box 245050, 1501 N. Campbell Avenue, Tucson, AZ, 85724-5050, USA. pronald@email.arizona.edu.ORCID http://orcid.org/0000-0001-9877-5370
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
Arizona Biomedical Research Commission ADHS16-162406National Institute of Neurological Disorders and Stroke NS084941NINDS NIH HHS R01 NS084941
6 · The paper itself

Abstract

backgroundTargeting endogenous blood-brain barrier (BBB) transporters such as organic anion transporting polypeptide 1a4 (Oatp1a4) can facilitate drug delivery for treatment of neurological diseases. Advancement of Oatp targeting for optimization of CNS drug delivery requires characterization of sex-specific differences in BBB expression and/or activity of this transporter.

methodsIn this study, we investigated sex differences in Oatp1a4 functional expression at the BBB in adult and prepubertal (i.e., 6-week-old) Sprague-Dawley rats. We also performed castration or ovariectomy surgeries to assess the role of gonadal hormones on Oatp1a4 protein expression and transport activity at the BBB. Slco1a4 (i.e., the gene encoding Oatp1a4) mRNA expression and Oatp1a4 protein expression in brain microvessels was determined using quantitative real-time PCR and western blot analysis, respectively. Oatp transport function at the BBB was determined via in situ brain perfusion using [

resultsOur results showed increased brain microvascular Slco1a4 mRNA and Oatp1a4 protein expression as well as increased brain uptake of [

conclusionsThese novel data confirm sex-specific differences in BBB Oatp1a4 functional expression, findings that have profound implications for treatment of CNS diseases. Studies are ongoing to fully characterize molecular pathways that regulate sex differences in Oatp1a4 expression and activity.

Indexed as

Sex CharacteristicsAnimalsAtorvastatinBlood-Brain BarrierFemaleGonadal Steroid HormonesMaleMicrovesselsOrganic Anion TransportersRats, Sprague-DawleyRNA, MessengerTaurocholic AcidAtorvastatinGonadal Steroid HormonesOrganic Anion TransportersRNA, MessengerSlco1a4 protein, ratTaurocholic AcidBlood–brain barrierDrug deliveryOrganic anion transporting polypeptidesSex differencesTransporters

Identifiers

PMID30208928
PMCPMC6136214
OpenAlexW2889015341

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.