Evidence map›Paper›PMID 22702955›Full record

ArticleTissue engineering. Part A2012

Microtissue engineered constructs with living axons for targeted nervous system reconstruction.

D Kacy Cullen, Min D Tang-Schomer, Laura A Struzyna, Ankur R Patel, Victoria E Johnson, John A Wolf, Douglas H Smith

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering. Part A, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

47 citing papers in PubMed, 73 citations in OpenAlex.

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  12. New Targets and New Technologies in the Treatment of Parkinson's Disease: A Narrative Review.International journal of environmental research and public health · 2022
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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

7 authors at 1 institution in 1 country.

D Kacy CullenDepartment of Neurosurgery, School of Medicine, Center for Brain Injury and Repair, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Min D Tang-Schomer
Laura A Struzyna
Ankur R Patel
Victoria E Johnson
John A Wolf
Douglas H Smith
University of Pennsylvania · US

Funding

TBI: Uncovering Mechanisms of AD-like pathologyR01NS038104 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SMITH, DOUGLAS HAMILTON · 1999 to 2020
$7.6M
NeuroimagingP01NS056202 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI LEVIN, HARVEY · 2008 to 2012
$6.6M
BRIAN INJURY TRAINING GRANTT32NS043126 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI Douglas Hamilton Smith · 2003 to 2026
$5.9M
Spinal cord repair with nerve constructsR01NS048949 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SMITH, DOUGLAS HAMILTON · 2006 to 2009
$1.4M
NINDS NIH HHS NS038104NINDS NIH HHS NS043126NINDS NIH HHS NS048949NINDS NIH HHS NS056202
6 · The paper itself

Abstract

As a common feature of many neurological diseases and injury, the loss of axon pathways can have devastating effects on function. Here, we demonstrate a new strategy to restore damaged axon pathways using transplantable miniature constructs consisting of living neurons and axonal tracts internalized within hydrogel tubes. These hydrogel microconduits were developed through an iterative process to support neuronal survival and directed axon growth. The design included hollow agarose tubes providing a relatively stiff outer casing to direct constrained unidirectional outgrowth of axons through a central soft collagen matrix, with overall dimensions of 250 μm inner diameter ×500 μm outer diameter and extending up to several centimeters. The outer casing was also designed to provide structural support of neuronal/axonal cultures during transplantation of the construct. Using neuron culture conditions optimized for the microconduits, dissociated dorsal root ganglia neurons were seeded in the collagen at one end of the conduits. Over the following week, high-resolution confocal microscopy demonstrated that the neurons survived and the somata remained in a tight cluster at the original seeding site. In addition, robust outgrowth of axons from the neurons was found, with axon fascicles constrained in a longitudinal projection along the internal collagen canal and extending over 5 mm in length. Notably, this general geometry recapitulates the anatomy of axon tracts. As such, these constructs may be useful to repair damaged axon projections by providing a transplantable bridge of living axons. Moreover, the small size of the construct permits follow-on studies of minimally invasive transplantation into potentially sensitive regions of the nervous system.

Indexed as

AnimalsAxonsCell PolarityCell ProliferationCell SurvivalCollagenNerve RegenerationNeuritesNeurogliaRatsRats, Sprague-DawleyRegenerative MedicineReproducibility of ResultsSepharoseTissue EngineeringTissue ScaffoldsCollagenSepharose

Identifiers

PMID22702955
PMCPMC3482875
OpenAlexW1997846279

What OpenQuestion holds

Textmetadata
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.