Evidence map›Paper›PMID 36103781›Full record

ArticleBiomaterials2022

In vivo spatiotemporal dynamics of astrocyte reactivity following neural electrode implantation.

Sajishnu P Savya, Fan Li, Stephanie Lam, Steven M Wellman, Kevin C Stieger, Keying Chen, James R Eles, Takashi D Y Kozai

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
4.2field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 44 citations in OpenAlex.

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  20. Short-Term Effects of Gamma Stimulation on Neuroinflammation at the Tissue-Electrode Interface in Motor Cortex.Neuromodulation : journal of the International Neuromodulation Society · 2024
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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

8 authors at 2 institutions in 1 country.

Sajishnu P SavyaDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Northwestern University, USA.
Fan LiDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA; Computational Modeling & Simulation PhD Program, University of Pittsburgh, Pittsburgh, PA, USA.
Stephanie LamDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA.
Steven M WellmanDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA.
Kevin C StiegerDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA.
Keying ChenDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA.
James R ElesDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA.
Takashi D Y KozaiDepartment of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA; Center for Neuroscience, University of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; NeuroTech Center, University of Pittsburgh Brain Institute, Pittsburgh, PA, USA. Electronic address: tk.kozai@pitt.edu.
University of Pittsburgh · USNorthwestern University · US

Funding

Using Electrical Stimulation to Modulation Microglia and the Conversion of Microglia PhenotypesR01NS115707 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KOZAI, TAKASHI DANIEL YOSHIDA · 2020 to 2024
$3.2M
Subcellular Wireless Axons for in vivo Localized Neuronal ExcitationR01NS105691 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Takashi Daniel Yoshida Kozai, Wen Li · 2020 to 2026
$3.1M
Mechanisms behind Electrode Induced BBB damage's impact on neural recordingR01NS094396 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KOZAI, TAKASHI DANIEL YOSHIDA · 2015 to 2019
$2.2M
Exploring the role of Oligodendrocytes and progenitors on chronic brain implantsR21NS108098 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KOZAI, TAKASHI DANIEL YOSHIDA · 2018 to 2019
$387k
Elucidating Structural and Functional Alterations of CNS Pericytes on Chronic Brain ImplantsF99NS124186 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WELLMAN, STEVEN · 2021 to 2022
$82k
NINDS NIH HHS F99 NS124186NINDS NIH HHS R01 NS094396NINDS NIH HHS R01 NS105691NINDS NIH HHS R01 NS115707NINDS NIH HHS R21 NS108098
6 · The paper itself

Abstract

Brain computer interfaces (BCIs), including penetrating microelectrode arrays, enable both recording and stimulation of neural cells. However, device implantation inevitably causes injury to brain tissue and induces a foreign body response, leading to reduced recording performance and stimulation efficacy. Astrocytes in the healthy brain play multiple roles including regulating energy metabolism, homeostatic balance, transmission of neural signals, and neurovascular coupling. Following an insult to the brain, they are activated and gather around the site of injury. These reactive astrocytes have been regarded as one of the main contributors to the formation of a glial scar which affects the performance of microelectrode arrays. This study investigates the dynamics of astrocytes within the first 2 weeks after implantation of an intracortical microelectrode into the mouse brain using two-photon microscopy. From our observation astrocytes are highly dynamic during this period, exhibiting patterns of process extension, soma migration, morphological activation, and device encapsulation that are spatiotemporally distinct from other glial cells, such as microglia or oligodendrocyte precursor cells. This detailed characterization of astrocyte reactivity will help to better understand the tissue response to intracortical devices and lead to the development of more effective intervention strategies to improve the functional performance of neural interfacing technology.

Indexed as

AstrocytesGliosisAnimalsElectrodes, ImplantedMiceMicroelectrodesMicrogliaNeurogliaAstrogliosisForeign body responseIntracortical microelectrodeNeurovascular coupling

Identifiers

PMID36103781
PMCPMC10231871
OpenAlexW4294147087

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.