H OH metabolites OH Review Metabolomics Studies in Psoriatic Disease: A Review John Koussiouris 1,2 , Nikita Looby 1, Melanie Anderson 3, Vathany Kulasingam 2,4 and Vinod Chandran 1,2,5,6,7,* 1 Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, ON M5T 0S8, Canada;
[email protected] (J.K.);
[email protected] (N.L.) 2 Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5T 0S8, Canada;
[email protected] 3 Library and Information Services, University Health Network, Toronto, ON M5T 0S8, Canada;
[email protected] 4 Division of Clinical Biochemistry, Laboratory Medicine Program, University Health Network, Toronto, ON M5T 0S8, Canada 5 Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada 6 Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada 7 Department of Medicine, Memorial University, St. John’s, NL A1B 3V6, Canada * Correspondence:
[email protected] Abstract: Metabolomics investigates a broad range of small molecules, allowing researchers to understand disease-related changes downstream of the genome and proteome in response to external environmental stimuli. It is an emerging technology that holds promise in identifying biomarkers and informing the practice of precision medicine. In this review, we summarize the studies that have examined endogenous metabolites in patients with psoriasis and/or psoriatic arthritis using nuclear magnetic resonance (NMR) or mass spectrometry (MS) and were published through 26 January 2021. A standardized protocol was used for extracting data from full-text articles identified by searching OVID Medline ALL, OVID Embase, OVID Cochrane Central Register of Controlled Trials and BIOSIS Citation: Koussiouris, J.; Looby, N.; Citation Index in Web of Science.