Evidence map›Paper›PMID 35488144›Full record

ArticlePharmaceutical research2022

Regional Differences in the Absolute Abundance of Transporters, Receptors and Tight Junction Molecules at the Blood-Arachnoid Barrier and Blood-Spinal Cord Barrier among Cervical, Thoracic and Lumbar Spines in Dogs.

Hina Takeuchi, Masayoshi Suzuki, Ryohei Goto, Kenta Tezuka, Holger Fuchs, Naoki Ishiguro, Tetsuya Terasaki, Clemens Braun, Yasuo Uchida

Abstract read
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Article in Pharmaceutical research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

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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

9 authors at 3 institutions in 2 countries.

Hina TakeuchiDivision of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
Masayoshi SuzukiDivision of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
Ryohei GotoFaculty of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
Kenta TezukaDivision of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
Holger FuchsBoehringer Ingelheim Pharma GmbH & Co. KG, Cardio-Metabolic Diseases, Biberach, Germany.
Naoki IshiguroNippon Boehringer Ingelheim. Co. Ltd, Kobe, Japan.
Tetsuya TerasakiDivision of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
Clemens BraunBoehringer Ingelheim Pharma GmbH & Co. KG, Drug Discovery Sciences, Biberach, Germany. clemens.braun@boehringer-ingelheim.com.
Yasuo UchidaDivision of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan. yasuo.uchida.c8@tohoku.ac.jp.ORCID http://orcid.org/0000-0001-9860-1979
Tohoku University · JPBoehringer Ingelheim (Germany) · DEBoehringer Ingelheim (Japan) · JP

Funding

Japan Science and Technology Agency JPMJCR17H1Japan Society for the Promotion of Science KAKENHI: 18KK0446Japan Society for the Promotion of Science KAKENHI: 20H03399Ministry of Education, Culture, Sports, Science and Technology KAKENHI: 20H04690Ministry of Education, Culture, Sports, Science and Technology KAKENHI: 20H05495Ministry of Education, Culture, Sports, Science and Technology KAKENHI: 22H04798
6 · The paper itself

Abstract

purposeThe purpose of the present study was to quantitatively determine the expression of transporters, receptors and tight junction molecules at the blood-arachnoid barrier (BAB) and blood-spinal cord barrier (BSCB) in cervical, thoracic and lumbar spines from dogs.

methodsThe expression levels of 31 transporters, 3 receptors, 1 tight junction protein, and 3 marker proteins in leptomeninges and capillaries isolated from spines (3 male and 2 female dogs) were determined by quantitative Targeted Absolute Proteomics (qTAP). The units were converted from fmol/μg protein to pmol/cm (absolute abundance at the BAB and the BSCB in a 1 cm section of spine).

resultsThe expression of MDR1 and BCRP were greater at the BSCB compared to the BAB (especially in the cervical cord), and the expressions at the lumbar BSCB were lower than that for the cervical BSCB. Among the organic anionic and cationic drug transporters, OAT1, OAT3, MRP1, OCT2 and MATE1/2 were detected only in the BAB, and not at the BSCB). The expression of these transporters was higher in the order: lumbar > thoracic > cervical BAB. The expressions of GLUT1, 4F2hc, EAAT1, 2, PEPT2, CTL1, and MCT1 at the BSCB of the cervical cord were higher than the corresponding values for the cervical BAB, and these values decreased in going down the spinal cord.

conclusionThese results provide a better understanding of the molecular mechanisms underlying the concentration gradients of drugs and endogenous substances in the cerebrospinal fluid and parenchyma of the spinal cord.

Indexed as

Blood-Brain BarrierTight JunctionsAnimalsArachnoidATP Binding Cassette Transporter, Subfamily G, Member 2DogsFemaleMaleMembrane Transport ProteinsNeoplasm ProteinsSpinal CordATP Binding Cassette Transporter, Subfamily G, Member 2Membrane Transport ProteinsNeoplasm Proteinsblood-arachnoid barrierblood-spinal cord barrierpmol/cmquantitative Targeted Absolute Proteomicstransporters

Identifiers

PMID35488144
OpenAlexW4225160143

What OpenQuestion holds

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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.