Evidence map›Paper›PMID 29907825›Full record

ArticleScientific reports2018

Ex vivo biomechanical characterization of syringe-needle ejections for intracerebral cell delivery.

Brendon Wahlberg, Harmanvir Ghuman, Jessie R Liu, Michel Modo

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

32 citing papers in PubMed, 57 citations in OpenAlex.

  1. Review
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  3. OPTRACE: Optical Imaging-Guided Transplantation and Tracking of Cells in the Mouse Brain.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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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.

Brendon WahlbergDepartments of Radiology, University of Pittsburgh, Pittsburgh, USA.
Harmanvir GhumanDepartments of Bioengineering, University of Pittsburgh, Pittsburgh, USA.
Jessie R LiuDepartments of Bioengineering, University of Pittsburgh, Pittsburgh, USA.
Michel ModoDepartments of Radiology, University of Pittsburgh, Pittsburgh, USA. mmm154@pitt.edu.ORCID 0000-0003-4436-735X
University of Pittsburgh · US

Funding

Neurovascular RegenerationR01EB016629 · NIBIB · YALE UNIVERSITY · PI HIRSCHI, KAREN KEMPER · 2014 to 2018
$4.8M
Non-invasive Imaging of the In Situ Restoration of Brain TissueR01NS082226 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI MODO, MICHEL M. · 2014 to 2016
$921k
NIBIB NIH HHS R01 EB016629NINDS NIH HHS R01 NS082226
6 · The paper itself

Abstract

Intracerebral implantation of cell suspensions is finding its clinical translation with encouraging results in patients with stroke. However, the survival of cells in the brain remains poor. Although the biological potential of neural stem cells (NSCs) is widely documented, the biomechanical effects of delivering cells through a syringe-needle remain poorly understood. We here detailed the biomechanical forces (pressure, shear stress) that cells are exposed to during ejection through different sized needles (20G, 26G, 32G) and syringes (10, 50, 250 µL) at relevant flow rates (1, 5, 10 µL/min). A comparison of 3 vehicles, Phosphate Buffered Saline (PBS), Hypothermosol (HTS), and Pluronic, indicated that less viscous vehicles are favorable for suspension with a high cell volume fraction to minimize sedimentation. Higher suspension viscosity was associated with greater shear stress. Higher flow rates with viscous vehicle, such as HTS reduced viability by ~10% and also produced more apoptotic cells (28%). At 5 µL/min ejection using a 26G needle increased neuronal differentiation for PBS and HTS suspensions. These results reveal the biological impact of biomechanical forces in the cell delivery process. Appropriate engineering strategies can be considered to mitigate these effects to ensure the efficacious translation of this promising therapy.

Indexed as

Models, BiologicalNeedlesSyringesCell DifferentiationCell LineHumansNeural Stem CellsStem Cell TransplantationViscosity

Identifiers

PMID29907825
PMCPMC6004017
OpenAlexW2808208433

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.