Evidence map›Paper›PMID 26863287›Full record

ArticleJournal of visualized experiments : JoVE2016

Implantation of Miniosmotic Pumps and Delivery of Tract Tracers to Study Brain Reorganization in Pathophysiological Conditions.

Eduardo H Sanchez-Mendoza, Jeismar Carballo, Marines Longart, Dirk M Hermann, Thorsten R Doeppner

Open access · greenAbstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.6field-weighted citation impact, top 27% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Article
  3. Reduced Oligodendrocyte Precursor Cell Impairs Astrocytic Development in Early Life Stress.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021
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  8. 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

5 authors at 3 institutions in 3 countries.

Eduardo H Sanchez-MendozaDepartment of Neurology, University of Duisburg-Essen; Eduardo.Sanchez-Mendoza@uk-essen.de.
Jeismar CarballoDepartment of Neurology, University of Duisburg-Essen; Neuroscience Unit, Institute for Advanced Studies (IDEA); Department of Cell Biology, Simon Bolivar University.
Marines LongartNeuroscience Unit, Institute for Advanced Studies (IDEA).
Dirk M HermannDepartment of Neurology, University of Duisburg-Essen.
Thorsten R DoeppnerDepartment of Neurology, University of Duisburg-Essen; Thorsten.Doeppner@uk-essen.de.
University of Duisburg-Essen · DEEarthTech International (United States) · USUniversidad Simón Bolívar · CO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pharmacological treatment in animal models of cerebral disease imposes the problem of repeated injection protocols that may induce stress in animals and result in impermanent tissue levels of the drug. Additionally, drug delivery to the brain is delicate due to the blood brain barrier (BBB), thus significantly reducing intracerebral concentrations of selective drugs after systemic administration. Therefore, a system that allows both constant drug delivery without peak levels and circumvention of the BBB is in order to achieve sufficiently high intracerebral concentrations of drugs that are impermeable to the BBB. In this context, miniosmotic pumps represent an ideal system for constant drug delivery at a fixed known rate that eludes the problem of daily injection stress in animals and that may also be used for direct brain delivery of drugs. Here, we describe a method for miniosmotic pump implantation and post operatory care that should be given to animals in order to successfully apply this technique. We embed the aforementioned experimental paradigm in standard procedures that are used for studying neuroplasticity within the brain of C57BL6 mice. Thus, we exposed animals to 30 min brain infarct and implanted with miniosmotic pumps connected to the skull via a cannula in order to deliver a pro-plasticity drug. Behavioral testing was done during 30 days of treatment. After removal the animals received injections of anterograde tract tracers to analyze neuronal plasticity in the chronic phase of recovery. Results indicated that neuroprotection by the delivered drug was accompanied with increase in motor fibers crossing the midline of the brain at target structures. The results affirm the value of these techniques for drug administration and brain plasticity studies in modern neuroscience.

Indexed as

Infusion Pumps, ImplantableAnimalsBiotinBrainBrain DiseasesBrain InfarctionDextransDrug Delivery SystemsFluorescent DyesMiceMice, Inbred C57BLMotor CortexNeuronal PlasticityStilbamidines2-hydroxy-4,4'-diamidinostilbene, methanesulfonate saltBiotinbiotinylated dextran amineDextransFluorescent DyesStilbamidines

Identifiers

PMID26863287
PMCPMC4781651
OpenAlexW2267499428

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.