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ABSTRACT: Objective
Transcranial magnetic stimulation (TMS) studies showed that patients with cognitive dysfunction and fatigue after COVID-19 exhibit impaired cortical GABAB-ergic activity, as revealed by reduced long-interval intracortical inhibition (LICI). Aim of this study was to test the effects of co-ultramicronized palmitoylethanolamide/luteolin (PEA-LUT), an endocannabinoid-like mediator able to enhance GABA-ergic transmission and to reduce neuroinflammation, on LICI.Methods
Thirty-nine patients (26 females, mean age 49.9 ± 11.4 years, mean time from infection 296.7 ± 112.3 days) suffering from persistent cognitive difficulties and fatigue after mild COVID-19 were randomly assigned to receive either PEA-LUT 700 mg + 70 mg or PLACEBO, administered orally bid for eight weeks. The day before (PRE) and at the end of the treatment (POST), they underwent TMS protocols to assess LICI. We further evaluate short-latency afferent inhibition (SAI) and long-term potentiation (LTP)-like cortical plasticity.Results
Patients treated with PEA-LUT but not with PLACEBO showed a significant increase of LICI and LTP-like cortical plasticity. SAI remained unaffected.Conclusions
Eight weeks of treatment with PEA-LUT restore GABAB activity and cortical plasticity in long Covid patients.Significance
This study confirms altered physiology of the motor cortex in long COVID-19 syndrome and indicates PEA-LUT as a candidate for the treatment of this post-viral condition.
SUBMITTER: Versace V
PROVIDER: S-EPMC9650483 | biostudies-literature | 2023 Jan
REPOSITORIES: biostudies-literature
Versace Viviana V Ortelli Paola P Dezi Sabrina S Ferrazzoli Davide D Alibardi Alessia A Bonini Ilenia I Engl Michael M Maestri Roberto R Assogna Martina M Ajello Valentina V Pucks-Faes Elke E Saltuari Leopold L Sebastianelli Luca L Kofler Markus M Koch Giacomo G
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 20221111
<h4>Objective</h4>Transcranial magnetic stimulation (TMS) studies showed that patients with cognitive dysfunction and fatigue after COVID-19 exhibit impaired cortical GABA<sub>B-</sub>ergic activity, as revealed by reduced long-interval intracortical inhibition (LICI). Aim of this study was to test the effects of co-ultramicronized palmitoylethanolamide/luteolin (PEA-LUT), an endocannabinoid-like mediator able to enhance GABA-ergic transmission and to reduce neuroinflammation, on LICI.<h4>Method ...[more]