Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study

Abstract Background Nicotinamide N-methyltransferase (NNMT) has been implicated in the pathogenesis of neuropsychiatric diseases. Bipolar disorder (BD) is associated with metabolic abnormalities and NNMT regulates energy metabolism and may also exert a causal role in metabolic disorders. The present...

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Main Authors: Qing Hu, Farong Liu, Luyin Yang, Zanxi Fang, Jue He, Wenqiang Wang, Pan You
Format: Article
Language:English
Published: BMC 2020-01-01
Series:BMC Psychiatry
Subjects:
Online Access:https://doi.org/10.1186/s12888-020-2461-4
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author Qing Hu
Farong Liu
Luyin Yang
Zanxi Fang
Jue He
Wenqiang Wang
Pan You
author_facet Qing Hu
Farong Liu
Luyin Yang
Zanxi Fang
Jue He
Wenqiang Wang
Pan You
author_sort Qing Hu
collection DOAJ
description Abstract Background Nicotinamide N-methyltransferase (NNMT) has been implicated in the pathogenesis of neuropsychiatric diseases. Bipolar disorder (BD) is associated with metabolic abnormalities and NNMT regulates energy metabolism and may also exert a causal role in metabolic disorders. The present study aimed to determine serum NNMT levels in patients with BD and compared the results with that of healthy controls, to explore the correlation between NNMT and clinical and metabolic characteristics. Methods The NNMT levels of 80 patients having a manic episode of BD and 65 non-psychiatric control individuals were measured using enzyme-linked immunosorbent assay. Metabolic parameters were evaluated using standard laboratory methods. Results The serum NNMT levels of bipolar mania patients were significantly lower than that of non-psychiatric controls. Furthermore, the serum levels of NNMT were found to be negatively correlated with Young Mania Rating Scale (YMRS) scores and the duration of the illness. Moreover, lower NNMT serum levels were found in patients with a history of antipsychotic medication and dyslipidemia. Our results also demonstrated the different patterns of correlation that exist between the study groups. Serum NNMT levels were found to be negatively correlated with triglyceride, cholesterol, and apolipoprotein B levels in the BD group, while the same was found to be negatively associated only with high-density lipoprotein cholesterol in the control group. Conclusions These findings support the suggestion that lower NNMT serum levels are significantly associated with BD and that serum NNMT has the potential to regulate lipid metabolism in BD patients.
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spelling doaj.art-084fcbcca35240fc97937a10c20b3a7c2022-12-21T18:15:30ZengBMCBMC Psychiatry1471-244X2020-01-012011710.1186/s12888-020-2461-4Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional studyQing Hu0Farong Liu1Luyin Yang2Zanxi Fang3Jue He4Wenqiang Wang5Pan You6Xiamen Xianyue HospitalXiamen Xianyue HospitalArts College of Xiamen UniversityZhongshan Hospital, School of Medicine, Xiamen UniversityXiamen Xianyue HospitalXiamen Xianyue HospitalXiamen Xianyue HospitalAbstract Background Nicotinamide N-methyltransferase (NNMT) has been implicated in the pathogenesis of neuropsychiatric diseases. Bipolar disorder (BD) is associated with metabolic abnormalities and NNMT regulates energy metabolism and may also exert a causal role in metabolic disorders. The present study aimed to determine serum NNMT levels in patients with BD and compared the results with that of healthy controls, to explore the correlation between NNMT and clinical and metabolic characteristics. Methods The NNMT levels of 80 patients having a manic episode of BD and 65 non-psychiatric control individuals were measured using enzyme-linked immunosorbent assay. Metabolic parameters were evaluated using standard laboratory methods. Results The serum NNMT levels of bipolar mania patients were significantly lower than that of non-psychiatric controls. Furthermore, the serum levels of NNMT were found to be negatively correlated with Young Mania Rating Scale (YMRS) scores and the duration of the illness. Moreover, lower NNMT serum levels were found in patients with a history of antipsychotic medication and dyslipidemia. Our results also demonstrated the different patterns of correlation that exist between the study groups. Serum NNMT levels were found to be negatively correlated with triglyceride, cholesterol, and apolipoprotein B levels in the BD group, while the same was found to be negatively associated only with high-density lipoprotein cholesterol in the control group. Conclusions These findings support the suggestion that lower NNMT serum levels are significantly associated with BD and that serum NNMT has the potential to regulate lipid metabolism in BD patients.https://doi.org/10.1186/s12888-020-2461-4Nicotinamide-N-methyltransferaseBipolar maniaEnzyme-linked immunosorbent assayLipid metabolismSerum level
spellingShingle Qing Hu
Farong Liu
Luyin Yang
Zanxi Fang
Jue He
Wenqiang Wang
Pan You
Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
BMC Psychiatry
Nicotinamide-N-methyltransferase
Bipolar mania
Enzyme-linked immunosorbent assay
Lipid metabolism
Serum level
title Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
title_full Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
title_fullStr Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
title_full_unstemmed Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
title_short Lower serum nicotinamide N-methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls: a cross-sectional study
title_sort lower serum nicotinamide n methyltransferase levels in patients with bipolar disorder during acute episodes compared to healthy controls a cross sectional study
topic Nicotinamide-N-methyltransferase
Bipolar mania
Enzyme-linked immunosorbent assay
Lipid metabolism
Serum level
url https://doi.org/10.1186/s12888-020-2461-4
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