Beta Electroencephalographic Oscillation Is a Potential GABAergic Biomarker of Chronic Peripheral Neuropathic Pain

Teixeira, Micael; Mancini, Christian; Wicht, Corentin Aurèle; Maestretti, Gianluca; Kuntzer, Thierry; Cazzoli, Dario; Mouthon, Michael; Annoni, Jean-Marie; Chabwine, Joelle Nsimire (2021). Beta Electroencephalographic Oscillation Is a Potential GABAergic Biomarker of Chronic Peripheral Neuropathic Pain. Frontiers in neuroscience, 15, p. 594536. Frontiers Research Foundation 10.3389/fnins.2021.594536

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This preliminary investigation aimed to assess beta (β) oscillation, a marker of the brain GABAergic signaling, as a potential objective pain marker, hence contributing at the same time to the mechanistic approach of pain management. This case-control observational study measured β electroencephalographic (EEG) oscillation in 12 right-handed adult male with chronic neuropathic pain and 10 matched controls (∼55 years). Participants were submitted to clinical evaluation (pain visual analog scale, Hospital Anxiety, and Depression scale) and a 24-min high-density EEG recording (BIOSEMI). Data were analyzed using the EEGlab toolbox (MATLAB), SPSS, and R. The global power spectrum computed within the low (Lβ, 13-20 Hz) and the high (Hβ, 20-30 Hz) β frequency sub-bands was significantly lower in patients than in controls, and accordingly, Lβ was negatively correlated to the pain visual analog scale (R = -0.931, p = 0.007), whereas Hβ correlation was at the edge of significance (R = -0.805; p = 0.053). Patients' anxiety was correlated to pain intensity (R = 0.755; p = 0.003). Normalization of the low and high β global power spectrum (GPS) to the GPS of the full frequency range, while confirming the significant Lβ power decrease in chronic neuropathic pain patients, vanished the significance of the Hβ decrease, as well as the correlation between Lβ power and pain intensity. Our results suggest that the GABAergic Lβ EEG oscillation is affected by chronic neuropathic pain. Confirming the Lβ GPS decrease and the correlation with pain intensity in larger studies would open new opportunities for the clinical application of gamma-aminobutyric acid-modifying therapies.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation

UniBE Contributor:

Cazzoli, Dario

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

1662-4548

Publisher:

Frontiers Research Foundation

Language:

English

Submitter:

Angela Amira Botros

Date Deposited:

11 May 2021 09:42

Last Modified:

16 May 2021 03:02

Publisher DOI:

10.3389/fnins.2021.594536

PubMed ID:

33716642

BORIS DOI:

10.48350/155513

URI:

https://boris.unibe.ch/id/eprint/155513

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