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Plasma leptin level mirrors metabolome alterations in young adults

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Abstract

Introduction

Leptin is known to regulate pathways of energy metabolism, reproduction, and control appetite. Whether plasma leptin levels reflect changes in metabolites of these pathways is unknown.

Objectives

We aimed to find whether there is an association between leptin levels and levels of metabolites of energy and hormone metabolism.

Methods

We performed an untargeted metabolomics analysis of plasma from 110 healthy adults (men: women = 1:1; aged 18–40 years), using liquid chromatography-tandem mass spectrometry. Blood samples were collected from all the study subjects in the fasting state. Clinical features and markers of obesity and Type 2 diabetes mellitus (T2DM) were assessed in all. The association between levels of metabolites and clinical and biochemical parameters was identified using the multivariable-adjusted linear regression model and PLS-DA analysis.

Results

The leptin level was found to have a significant association with a substantial number of metabolites in women and men. Leptin level was positively associated with glycocholic acid and arachidic acid, metabolites related to energy metabolisms, pregnanediol-3-glucuronide, a metabolite of progesterone metabolism, and quercetin 3′-sulfate, a diet-derived metabolite. Leptin level was negatively associated with ponasteroside A and barringtogenol C levels. Leptin level was positively correlated with adiponectin and negatively with total calorie intake and levels of triglyceride and very-low-density lipoprotein. Leptin levels were associated with lipid and sex hormone metabolism in women, while metabolites involved in amino acid metabolism were correlated to leptin in men.

Conclusion

Our study indicates that leptin level reflects metabolome alterations and hence could be a useful marker to detect early changes in energy and hormone metabolisms.

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Data availability

The metabolomics data is available at MetaboLights (Study ID: MTBLS743).

Abbreviations

T2DM:

Type 2 diabetes mellitus

WAT:

White adipose tissue

RPLC:

Reversed-phase liquid chromatography

HILIC:

Hydrophilic interaction chromatography

QC-RLSC:

Quality control-robust loess signal correction

KNN:

K-nearest neighbor

VLSFA:

Very long-chain saturated fatty acid

PAI-1:

Plasminogen activator inhibitor-1

GLP-1:

Glucagon like polypeptide-1

HOMA-IR:

Homeostasis model of insulin resistance

References

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Acknowledgements

The authors wish to thank our participants in this study. This work was supported by Department of Biotechnology, Government of India.

Funding

Funding was provided by Department of Biotechnology, Ministry of Science and Technology (Grant No. BT/PR8444/MED/30/1021/2013).

Author information

Authors and Affiliations

Authors

Contributions

AKA conducted the experiments and wrote the manuscript. AKA and GS analyzed the data. MCVR performed the metabolomics experiments. PRP performed Bio-Plex Pro Human Diabetes Assay. GV and CCK designed the study. VRK performed statistical analysis. CCK revised and finalized the manuscript. AJ is the principal investigator, designed this study and has full access to all data.

Corresponding author

Correspondence to Abdul Jaleel.

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Conflict of interest

The authors declare and certify that they have no conflict of interest.

Ethical approval

All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Kumar, A.A., Satheesh, G., Vijayakumar, G. et al. Plasma leptin level mirrors metabolome alterations in young adults. Metabolomics 16, 87 (2020). https://doi.org/10.1007/s11306-020-01708-9

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  • DOI: https://doi.org/10.1007/s11306-020-01708-9

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