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Impact of elevated body mass index (BMI) on cognitive functioning and inflammation in persons with post-COVID-19 condition: a secondary analysis

Published online by Cambridge University Press:  12 April 2024

Gia Han Le
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Angela T.H. Kwan
Affiliation:
Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada Department of Psychiatry, University of Toronto, Toronto, ON, Canada
Ziji Guo
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada Department of Psychiatry, University of Toronto, Toronto, ON, Canada
Sabrina Wong
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
Sebastian Badulescu
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Hartej Gill
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Kayla M. Teopiz
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Shakila Meshkat
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Felicia Ceban
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada Michael G. DeGroote School of Medicine. McMaster University, Hamilton, ON, Canada
Lee Phan
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada
Mehala Subramaniapillai
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada
Joshua D. Di Vincenzo
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Joshua D. Rosenblat
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada Department of Psychiatry, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
Rodrigo B. Mansur
Affiliation:
Institute of Medical Science, University of Toronto, Toronto, ON, Canada Brain and Cognition Discovery Foundation, Toronto, ON, Canada
Giacomo d’Andrea
Affiliation:
Department of Neuroscience, Imaging and Clinical Sciences University “G d’Annunzio”, Chieti, Italy
Roger Ho
Affiliation:
Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore Institute for Health Innovation and Technology (iHealthtech), National University of Singapore, Singapore, Singapore
Taeho Greg Rhee
Affiliation:
Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA Department of Public Health Sciences, University of Connecticut School of Medicine, Farmington, CT, USA
Roger S. McIntyre*
Affiliation:
Brain and Cognition Discovery Foundation, Toronto, ON, Canada Department of Psychiatry, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
*
Corresponding author: Roger S. McIntyre; Email: roger.mcintyre@bcdf.org

Abstract

Background:

Individuals who have recovered from the acute stage of SARS-CoV-2 infection may be at risk of developing post-COVID-19 condition (PCC), characterised by a spectrum of persisting, non-specific, and functionally impairing symptoms across multiple organ systems. Obesity has been implicated as a risk factor for PCC, mediated by chronic systemic inflammation. The foregoing has also been separately reported to mediate cognitive dysfunction in PCC.

Methods:

This is a post-hoc analysis of a randomised, double-blinded, placebo-controlled clinical trial evaluating vortioxetine treatment for cognitive impairments in persons with PCC who received vortioxetine or placebo for eight weeks. This analysis comprises baseline data, examining the impact of BMI on cognitive functioning measured by the Digit Symbol Substitution Test (DSST) and Trails Making Tests (TMT)-A/B, as well as inflammation, via serum c-reactive protein (CRP) and erythrocyte sedimentation rate (ESR).

Results:

Complete data from 70 participants were statistically analysed and adjusted for age and sex. BMI was negatively correlated with performance on the DSST (β = −0.003, p = 0.047), TMT-A (β = −0.006, p = 0.025), and TMT-B (β = −0.006, p = 0.002). BMI was positively correlated with serum CRP (unstandardized β = 0.193, standardized β = 0.612, p < 0.001) and ESR (β = 0.039, p < 0.001) levels.

Conclusion:

We observed a significant negative correlation between BMI and cognitive functioning, and a significant positive correlation between BMI and inflammation in persons with PCC, suggesting a bidirectional interplay between BMI, PCC, and cognitive function; individuals with an elevated BMI may be at a greater risk of developing PCC and/or presenting with greater cognitive deficits mediated by chronic systemic inflammation.

Type
Original Article
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of Scandinavian College of Neuropsychopharmacology

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