Functional connectivity alterations in a murine model of optic neuritis

Patrick W. Wright; Angela S. Archambault; Stacey Peek; Adam Q. Bauer; Susan M. Culican; Beau M. Ances; Joseph P. Culver; Gregory F. Wu

doi:10.1016/j.expneurol.2017.05.004

Functional connectivity alterations in a murine model of optic neuritis

Patrick W. Wright, Angela S. Archambault, Stacey Peek, Adam Q. Bauer, Susan M. Culican, Beau M. Ances, Joseph P. Culver, Gregory F. Wu

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The basis for neuronal dysfunction following inflammatory demyelination of the central nervous system (CNS) remains poorly understood. We characterized the network response to white matter injury in the anterior visual pathway using an experimental model of optic neuritis (ON), as ON is often an early manifestation of immune-mediated CNS demyelination in multiple sclerosis (MS). Optical intrinsic signal imaging was performed before and after the induction of ON in mice to measure changes in cortical network functional connectivity. We observed a greater loss of connectivity between homotopic visual cortices in ON mice compared to controls. Further, decreases in homotopic visual cortex connectivity were associated with visual acuity loss in ON mice. These results demonstrate that network connectivity changes resulting from ON can be modeled in an experimental murine system. Future studies will identify the mechanisms that cause neuronal dysfunction due to white matter injury seen in MS.

Original language	English (US)
Pages (from-to)	18-22
Number of pages	5
Journal	Experimental Neurology
Volume	295
DOIs	https://doi.org/10.1016/j.expneurol.2017.05.004
State	Published - Sep 2017
Externally published	Yes

Bibliographical note

Funding Information:
We thank Kenneth Shindler, MD, PhD (The University of Pennsylvania) for input on ON assessment and Grant Baxter at Washington University in St. Louis for technical assistance. Funding: this work was supported by the National Institutes of Health (grant numbers R01NS083678 (GFW), R01NS0836780 (BMA), R01NR014449 (BMA), R01NR012907 (BMA), and R01NR012657 (BMA)).

Publisher Copyright:
© 2017 Elsevier Inc.

Keywords

Demyelination
Functional connectivity
Multiple sclerosis
Optic neuritis
Optical imaging
Visual cortex

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10.1016/j.expneurol.2017.05.004

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5657240

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title = "Functional connectivity alterations in a murine model of optic neuritis",

abstract = "The basis for neuronal dysfunction following inflammatory demyelination of the central nervous system (CNS) remains poorly understood. We characterized the network response to white matter injury in the anterior visual pathway using an experimental model of optic neuritis (ON), as ON is often an early manifestation of immune-mediated CNS demyelination in multiple sclerosis (MS). Optical intrinsic signal imaging was performed before and after the induction of ON in mice to measure changes in cortical network functional connectivity. We observed a greater loss of connectivity between homotopic visual cortices in ON mice compared to controls. Further, decreases in homotopic visual cortex connectivity were associated with visual acuity loss in ON mice. These results demonstrate that network connectivity changes resulting from ON can be modeled in an experimental murine system. Future studies will identify the mechanisms that cause neuronal dysfunction due to white matter injury seen in MS.",

keywords = "Demyelination, Functional connectivity, Multiple sclerosis, Optic neuritis, Optical imaging, Visual cortex",

author = "Wright, {Patrick W.} and Archambault, {Angela S.} and Stacey Peek and Bauer, {Adam Q.} and Culican, {Susan M.} and Ances, {Beau M.} and Culver, {Joseph P.} and Wu, {Gregory F.}",

note = "Funding Information: We thank Kenneth Shindler, MD, PhD (The University of Pennsylvania) for input on ON assessment and Grant Baxter at Washington University in St. Louis for technical assistance. Funding: this work was supported by the National Institutes of Health (grant numbers R01NS083678 (GFW), R01NS0836780 (BMA), R01NR014449 (BMA), R01NR012907 (BMA), and R01NR012657 (BMA)). Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

month = sep,

doi = "10.1016/j.expneurol.2017.05.004",

language = "English (US)",

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AU - Ances, Beau M.

AU - Culver, Joseph P.

AU - Wu, Gregory F.

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PY - 2017/9

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N2 - The basis for neuronal dysfunction following inflammatory demyelination of the central nervous system (CNS) remains poorly understood. We characterized the network response to white matter injury in the anterior visual pathway using an experimental model of optic neuritis (ON), as ON is often an early manifestation of immune-mediated CNS demyelination in multiple sclerosis (MS). Optical intrinsic signal imaging was performed before and after the induction of ON in mice to measure changes in cortical network functional connectivity. We observed a greater loss of connectivity between homotopic visual cortices in ON mice compared to controls. Further, decreases in homotopic visual cortex connectivity were associated with visual acuity loss in ON mice. These results demonstrate that network connectivity changes resulting from ON can be modeled in an experimental murine system. Future studies will identify the mechanisms that cause neuronal dysfunction due to white matter injury seen in MS.

AB - The basis for neuronal dysfunction following inflammatory demyelination of the central nervous system (CNS) remains poorly understood. We characterized the network response to white matter injury in the anterior visual pathway using an experimental model of optic neuritis (ON), as ON is often an early manifestation of immune-mediated CNS demyelination in multiple sclerosis (MS). Optical intrinsic signal imaging was performed before and after the induction of ON in mice to measure changes in cortical network functional connectivity. We observed a greater loss of connectivity between homotopic visual cortices in ON mice compared to controls. Further, decreases in homotopic visual cortex connectivity were associated with visual acuity loss in ON mice. These results demonstrate that network connectivity changes resulting from ON can be modeled in an experimental murine system. Future studies will identify the mechanisms that cause neuronal dysfunction due to white matter injury seen in MS.

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KW - Visual cortex

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Functional connectivity alterations in a murine model of optic neuritis

Abstract

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Keywords

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