Evidence map›Paper›PMID 26927659›Full record

ArticleMolecular neurobiology2017

Exendin-4 Reverses Biochemical and Functional Alterations in the Blood-Brain and Blood-CSF Barriers in Diabetic Rats.

Caroline Zanotto, Fabrício Simão, Manuela Sangalli Gasparin, Regina Biasibetti, Lucas Silva Tortorelli, Patrícia Nardin, Carlos-Alberto Gonçalves

Abstract read
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In one paragraph

Article in Molecular neurobiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

29 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
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  7. Genetic and molecular mechanisms of hydrocephalus.Frontiers in molecular neuroscience · 2024
    Review
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  9. Systemic inflammation, neuroinflammation and perioperative neurocognitive disorders.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Review
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  12. Article
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  17. Transcellular routes of blood-brain barrier disruption.Experimental biology and medicine (Maywood, N.J.) · 2022
    Article
  18. Article
  19. Article
  20. Review
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

7 authors at 2 institutions in 2 countries.

Caroline ZanottoBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Fabrício SimãoResearch Division, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA.
Manuela Sangalli GasparinBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Regina BiasibettiBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Lucas Silva TortorelliBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Patrícia NardinBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. patricianardin@gmail.com.ORCID 0000-0003-0719-9369
Carlos-Alberto GonçalvesBiochemistry Department, Basic Sciences Institute of Health, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Universidade Federal do Rio Grande do Sul · BRJoslin Diabetes Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Diabetes mellitus (DM) is a metabolic disorder associated with micro- and macrovascular alterations that contribute to the cognitive impairment observed in diabetic patients. Signs of breakdown of the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB) have been found in patients and animal models of DM. Breakdown of the BBB and BCSFB can lead to disruptions in cerebral homeostasis and eventually neural dysfunction and degeneration. However, our understanding of the biochemistry underlying barrier protein modifications is incomplete. Herein, we evaluated changes in the levels of specific proteins in the BBB (occludin, claudin-5, ZO-1, and aquaporin-4) and BCSFB (claudin-2 and aquaporin-1) in the hippocampus of diabetic rats, and we also investigated the functional alterations in these barriers. In addition, we evaluated the ability of exendin-4 (EX-4), a glucagon-like peptide-1 agonist that can cross the BBB to reverse the functional and biochemical modifications observed in these animals. We observed a decrease in BBB proteins (except ZO-1) in diabetic rats, whereas the EX-4 treatment recovered the occludin and aquaporin-4 levels. Similarly, we observed a decrease in BCSFB proteins in diabetic rats, whereas EX-4 reversed such changes. EX-4 also reversed alterations in the permeability of the BBB and BCSFB in diabetic rats. Additionally, altered cognitive parameters in diabetic rats were improved by EX-4. These data further our understanding of the alterations in the central nervous system caused by DM, particularly changes in the proteins and permeability of the brain barriers, as well as cognitive dysfunction. Furthermore, these data suggest a role for EX-4 in therapeutic strategies for cognitive dysfunction in DM.

Indexed as

AnimalsAquaporin 4Biological TransportBlood-Brain BarrierBrainDiabetes Mellitus, ExperimentalExenatideMalePeptidesRatsTight JunctionsVenomsAqp4 protein, ratAquaporin 4ExenatidePeptidesVenomsBlood–brain barrierBlood–cerebrospinal fluid barrierCognitive impairmentDiabetes mellitusGLP-1 agonist

Identifiers

PMID26927659
OpenAlexW2288888153

What OpenQuestion holds

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Registered trials

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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.