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Salehi M A, Nilsson IA, Figueira J, Thornton LM, Abdulkarim I, Pålsson E, Bulik CM, Landén M. Serum profiling of anorexia nervosa: A 1H NMR-based metabolomics study. Eur Neuropsychopharmacol 2021; 49:1-10. [PMID: 33743376 DOI: 10.1016/j.euroneuro.2021.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/28/2021] [Accepted: 02/20/2021] [Indexed: 11/26/2022]
Abstract
Our understanding of pathophysiological mechanisms underlying anorexia nervosa (AN) is incomplete. The aim was to conduct a metabolomics profiling of serum samples from women with AN (n = 65), women who have recovered from AN (AN-REC, n = 65), and age-matched healthy female controls (HC, n = 65). Serum concentrations of 21 metabolites were measured using proton nuclear magnetic resonance (1H NMR). We used orthogonal partial least-squares discriminant analysis (OPLS-DA) modeling to assign group classification based on the metabolites. Analysis of variance (ANOVA) was used to test for metabolite concentration differences across groups. The OPLS-DA model could distinguish between the AN and HC groups (p = 9.05 × 10-11 R2Y = 0.36, Q2 = 0.37) and between the AN-REC and HC groups (p = 8.47 × 10-6, R2Y = 0.36, Q2 = 0.24,), but not between the AN and AN-REC groups (p = 0.63). Lower methanol concentration in the AN and AN-REC group explained most of the variance. Likewise, the strongest finding in the univariate analyses was lower serum methanol concentration in both AN and AN-REC compared with HC, which withstood adjustment for body mass index (BMI). We report for the first time lower serum concentrations of methanol in AN. The fact that low methanol was also found in recovered AN suggests that low serum concentration of methanol could either be trait marker or a scar effect of AN.
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Affiliation(s)
- Alireza Salehi M
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
| | - Ida Ak Nilsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden; Centre for Eating Disorders Innovation, Karolinska Institutet, Stockholm, Sweden
| | - João Figueira
- Department of Chemistry, SciLifeLab, Umeå University, Sweden
| | - Laura M Thornton
- Department of Psychiatry, University of North Carolina at Chapel Hill, NC, United States
| | - Israa Abdulkarim
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Erik Pålsson
- Institute of Neuroscience and Physiology, Department of Psychiatry, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Cynthia M Bulik
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Psychiatry, University of North Carolina at Chapel Hill, NC, United States; Department of Nutrition, University of North Carolina at Chapel Hill, NC, United States
| | - Mikael Landén
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Institute of Neuroscience and Physiology, Department of Psychiatry, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
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