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Does body mass index predict response to intravenous ketamine treatment in adults with major depressive and bipolar disorder? Results from the Canadian Rapid Treatment Center of Excellence

Published online by Cambridge University Press:  03 December 2020

Orly Lipsitz Open the ORCID record for Orly Lipsitz [Opens in a new window] ,
Roger S. McIntyre Open the ORCID record for Roger S. McIntyre [Opens in a new window] ,
Nelson B. Rodrigues ,
Yena Lee ,
Hartej Gill ,
Mehala Subramaniapillai ,
Kevin Kratiuk ,
Flora Nasri ,
Rodrigo B. Mansur  and
Joshua D. Rosenblat
Orly Lipsitz
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada
Roger S. McIntyre*
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada Brain and Cognition Discovery Foundation, Toronto, Ontario, Canada Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
Nelson B. Rodrigues
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada
Yena Lee
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada
Hartej Gill
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada
Mehala Subramaniapillai
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada
Kevin Kratiuk
Affiliation:
Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada Department of Clinical Immunology, Poznan University of Medical Sciences
Flora Nasri
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada
Rodrigo B. Mansur
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
Joshua D. Rosenblat
Affiliation:
Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Ontario, Canada Canadian Rapid Treatment Center of Excellence, Mississauga, Ontario, Canada Brain and Cognition Discovery Foundation, Toronto, Ontario, Canada Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
*
*Author for correspondence: Roger S. McIntyre Email: roger.mcintyre@uhn.ca
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Abstract

Background

Higher body mass index (BMI) has been found to predict greater antidepressant response to intravenous (IV) ketamine treatment. We evaluated the association between BMI and response to repeat-dose IV ketamine in patients with treatment-resistant depression (TRD).

Methods

Adults (N = 230) with TRD received four infusions of IV ketamine at a community-based clinic. Changes in symptoms of depression (ie, Quick Inventory for Depressive Symptomatology-Self-Report 16; QIDS-SR16), suicidal ideation (SI; ie, QIDS-SR16 SI item), anxiety (ie, Generalized Anxiety Disorder-7 Scale), anhedonic severity (ie, Snaith–Hamilton Pleasure Scale), and functioning (ie, Sheehan Disability Scale) following infusions were evaluated. Participants were stratified by BMI as normal (18.0-24.9 kg/m2; n = 72), overweight (25-29.9 kg/m2; n = 76), obese I (30-34.9 kg/m2; n = 47), or obese II (≥35.0 kg/m2; n = 35).

Results

Similar antidepressant effects with repeat-dose ketamine were reported between BMI groups (P = .261). In addition, categorical partial response (P = .149), response (P = .526), and remission (P = .232) rates were similar between the four BMI groups.

Conclusions

The findings are limited by the observational, open-label design of this retrospective analysis. Pretreatment BMI did not predict response to IV ketamine, which was effective regardless of BMI.

Keywords

Adiposityesketamineglutamateobesityoverweight
Type
Original Research
Information
CNS Spectrums , Volume 27 , Issue 3 , June 2022 , pp. 322 - 330
Copyright
© The Author(s), 2020. Published by Cambridge University Press

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