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Metabolomic Signature Between Metabolically Healthy Overweight/Obese and Metabolically Unhealthy Overweight/Obese: A Systematic Review

Authors Cheng D, Zhao X, Yang S, Cui H, Wang G

Received 3 December 2020

Accepted for publication 28 January 2021

Published 4 March 2021 Volume 2021:14 Pages 991—1010


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Juei-Tang Cheng

Dihe Cheng, Xue Zhao, Shuo Yang, Haiying Cui, Guixia Wang

Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, People’s Republic of China

Correspondence: Guixia Wang
Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, People’s Republic of China
Tel +15843081103
Email [email protected]

Abstract: The clinical manifestations of overweight/obesity are heterogeneous and complex. In contrast to metabolically unhealthy overweight/obese (MUO), a particular sub-group of obese patients who are considered as metabolically healthy overweight/obese (MHO), display favorable metabolic profiles characterized by high levels of insulin sensitivity, normal blood pressure, as well as favorable lipid, inflammation, hormone, liver enzyme, and immune profiles. While only a few available studies focused on the metabolic files underlying the obese phenotypes, the current review aimed to perform a systematic review of available studies focusing on describing the metabolomic signature between MUO and MHO. We did the systematic search for literature on MEDLINE (PubMed), the Cochrane Library, EMBASE, and searched for the references of relevant manuscripts from inception to 29 May 2020. After critical selection, 20 studies were eligible for this systematic review and evaluated by using QUADOMICS for quality assessment. Eventually, 12 of 20 studies were classified as “high quality”. Branched-chain amino acids (isoleucine, leucine, and valine), aromatic amino acids (phenylalanine and tyrosine), lipids (palmitic acid, palmitoleic acid, oleic acid, eicosapentaenoic acid, and docosahexaenoic acid), and acylcarnitines (propionyl carnitine) levels might be elevated in MUO. The current results suggested that MHO showed a favorable trend in the overall metabolic signature. More longitudinal studies are needed to elaborate deeply on the metabolic pathway and the relationship between metabolic patterns and the occurrence of the disease.

Keywords: metabolically unhealthy overweight/obese, metabolically healthy overweight/obese, metabolomics, amino acid, lipid

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