General anaesthesia during infancy reduces white matter micro-organisation in developing rhesus monkeys.


Journal

British journal of anaesthesia
ISSN: 1471-6771
Titre abrégé: Br J Anaesth
Pays: England
ID NLM: 0372541

Informations de publication

Date de publication:
04 2021
Historique:
received: 24 03 2020
revised: 04 12 2020
accepted: 24 12 2020
pubmed: 8 2 2021
medline: 1 4 2021
entrez: 7 2 2021
Statut: ppublish

Résumé

Non-human primates are commonly used in neuroimaging research for which general anaesthesia or sedation is typically required for data acquisition. In this analysis, the cumulative effects of exposure to ketamine, Telazol® (tiletamine and zolazepam), and the inhaled anaesthetic isoflurane on early brain development were evaluated in two independent cohorts of typically developing rhesus macaques. Diffusion MRI scans were analysed from 43 rhesus macaques (20 females and 23 males) at either 12 or 18 months of age from two separate primate colonies. Significant, widespread reductions in fractional anisotropy with corresponding increased axial, mean, and radial diffusivity were observed across the brain as a result of repeated anaesthesia exposures. These effects were dose dependent and remained after accounting for age and sex at time of exposure in a generalised linear model. Decreases of up to 40% in fractional anisotropy were detected in some brain regions. Multiple exposures to commonly used anaesthetics were associated with marked changes in white matter microstructure. This study is amongst the first to examine clinically relevant anaesthesia exposures on the developing primate brain. It will be important to examine if, or to what degree, the maturing brain can recover from these white matter changes.

Sections du résumé

BACKGROUND
Non-human primates are commonly used in neuroimaging research for which general anaesthesia or sedation is typically required for data acquisition. In this analysis, the cumulative effects of exposure to ketamine, Telazol® (tiletamine and zolazepam), and the inhaled anaesthetic isoflurane on early brain development were evaluated in two independent cohorts of typically developing rhesus macaques.
METHODS
Diffusion MRI scans were analysed from 43 rhesus macaques (20 females and 23 males) at either 12 or 18 months of age from two separate primate colonies.
RESULTS
Significant, widespread reductions in fractional anisotropy with corresponding increased axial, mean, and radial diffusivity were observed across the brain as a result of repeated anaesthesia exposures. These effects were dose dependent and remained after accounting for age and sex at time of exposure in a generalised linear model. Decreases of up to 40% in fractional anisotropy were detected in some brain regions.
CONCLUSIONS
Multiple exposures to commonly used anaesthetics were associated with marked changes in white matter microstructure. This study is amongst the first to examine clinically relevant anaesthesia exposures on the developing primate brain. It will be important to examine if, or to what degree, the maturing brain can recover from these white matter changes.

Identifiants

pubmed: 33549320
pii: S0007-0912(20)31051-5
doi: 10.1016/j.bja.2020.12.029
pmc: PMC8132881
pii:
doi:

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

845-853

Subventions

Organisme : NICHD NIH HHS
ID : U54 HD079124
Pays : United States
Organisme : NIH HHS
ID : P51 OD011132
Pays : United States
Organisme : NICHD NIH HHS
ID : P50 HD103573
Pays : United States
Organisme : NIMH NIH HHS
ID : R01 MH086633
Pays : United States
Organisme : NIMH NIH HHS
ID : P50 MH064065
Pays : United States
Organisme : NIMH NIH HHS
ID : R01 MH070890
Pays : United States
Organisme : NICHD NIH HHS
ID : R01 HD053000
Pays : United States
Organisme : NIMH NIH HHS
ID : P50 MH100031
Pays : United States
Organisme : NICHD NIH HHS
ID : R21 HD055255
Pays : United States
Organisme : NIMH NIH HHS
ID : P50 MH078105
Pays : United States
Organisme : NICHD NIH HHS
ID : P30 HD003110
Pays : United States
Organisme : NIBIB NIH HHS
ID : U54 EB005149
Pays : United States
Organisme : NICHD NIH HHS
ID : P30 HD003352
Pays : United States

Commentaires et corrections

Type : CommentIn

Informations de copyright

Copyright © 2021 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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Auteurs

Jeffrey T Young (JT)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Roza M Vlasova (RM)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. Electronic address: roza_vlasova@med.unc.edu.

Brittany R Howell (BR)

Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.

Rebecca C Knickmeyer (RC)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Elyse Morin (E)

Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.

Kaela I Kuitchoua (KI)

Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.

Gabriele R Lubach (GR)

Harlow Center for Biological Psychology, University of Wisconsin-Madison, Madison, WI, USA.

Jean Noel (J)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Xiaoping Hu (X)

Department of Bioengineering, University of California, Riverside, CA, USA.

Yundi Shi (Y)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Gibson Caudill (G)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Andrew L Alexander (AL)

Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, WI, USA.

Marc Niethammer (M)

Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Merle G Paule (MG)

Division of Neurotoxicology, National Center for Toxicological Research, US Food & Drug Administration, Jefferson, AR, USA.

Christopher L Coe (CL)

Harlow Center for Biological Psychology, University of Wisconsin-Madison, Madison, WI, USA.

Mar Sanchez (M)

Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA; Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA.

Martin Styner (M)

Department of Psychiatry University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

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Classifications MeSH