Evidence map›Paper›PMID 24486877›Full record

ArticleJournal of neuroscience methods2014

Implementation of a chronic unilateral intraparenchymal drug delivery system in a swine model.

Inyong Kim, Seungleal Paek, Brian D Nelson, Emily J Knight, Michael P Marsh, Allan J Bieber, Kevin E Bennet, Kendall H Lee

Abstract read
In one paragraph

Article in Journal of neuroscience methods, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

4 citing papers in PubMed, 7 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. 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

8 authors at 3 institutions in 1 country.

Inyong KimDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: kim.inyong@mayo.edu.
Seungleal PaekDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: paek.seungleal@mayo.edu.
Brian D NelsonMedtronic Neuromodulation, 7000 Central Avenue NE, Mail Stop RCE470, Minneapolis, MN 55432, USA. Electronic address: brian.d.nelson@medtronic.com.
Emily J KnightDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: knight.emily@mayo.edu.
Michael P MarshDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: marsh.michael@mayo.edu.
Allan J BieberDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA; Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: bieber.allan@mayo.edu.
Kevin E BennetDivision of Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: kbennet@mayo.edu.
Kendall H LeeDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: lee.kendall@mayo.edu.
Mayo Clinic in Florida · USMayo Clinic · USMedtronic (United States) · US

Funding

Medical Scientist Traning Program at Mayo ClinicT32GM065841 · NIGMS · MAYO CLINIC ROCHESTER · PI KAUFMANN, SCOTT H, SCHIMMENTI, LISA A · 2003 to 2022
$5.8M
NIGMS NIH HHS T32 GM065841
6 · The paper itself

Abstract

backgroundSystemic delivery of pharmacologic agents has led to many significant advances in the treatment of neurologic and psychiatric conditions. However, this approach has several limitations, including difficulty penetrating the blood-brain barrier and enzymatic degradation prior to reaching its intended target. Here, we describe the testing of a system allowing intraparenchymal (IPa) infusion of therapeutic agents directly to the appropriate anatomical targets, in a swine model. NEW

methodFive male pigs underwent 3.0T magnetic resonance (MR) guided placement of an IPa catheter into the dorso-medial putamen, using a combined system of the Leksell stereotactic arc, a Mayo-developed MRI-compatible pig head frame, and a custom-designed Fred Haer Company (FHC) delivery system.

resultsOur results show hemi-lateral coverage of the pig putamen is achievable from a single infusion point and that the volume of the bolus detected in each animal is uniform (1544±420mm(3)). COMPARISON WITH EXISTING

methodThe IPa infusion system is designed to isolate the intracranial catheter from bodily-induced forces while delivering drugs and molecules into the brain tissue by convection-enhanced delivery, with minimal-to-no catheter track backflow.

conclusionThis study presents an innovative IPa drug delivery system, which includes a sophisticated catheter and implantable pump designed to deliver drugs and various molecules in a precise and controlled manner with limited backflow. It also demonstrates the efficacy of the delivery system, which has the potential to radically impact the treatment of a wide range of neurologic conditions. Lastly, the swine model used here has certain advantages for translation into clinical applications.

Indexed as

Functional LateralityInfusion Pumps, ImplantableAnimalsConvectionDrug Delivery SystemsGadolinium DTPAImaging, Three-DimensionalMagnetic Resonance ImagingMaleModels, AnimalPutamenSwineTime FactorsGadolinium DTPABlood brain barrierCentral nervous systemChronic drug delivery systemIntraparenchymal catheterSwine model

Identifiers

PMID24486877
PMCPMC4564994
OpenAlexW2051969958

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.