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Amino acid metabolism dysregulation associated with inflammation and insulin resistance in HIV-infected individuals with metabolic disorders

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Abstract

Amino acid metabolic profile, particularly its association with clinical characteristics, remains unclear in patients with human immunodeficiency virus (HIV) infection and acquired immune deficiency syndrome (AIDS) combined with metabolic disorders. In this study, we performed targeted metabolomic analyses on 64 patients with HIV/AIDS and 21 healthy controls. Twenty-four amino acids and selected intermediate metabolites in the serum were quantitatively detected using high-performance liquid chromatography–tandem mass spectrometry, and characteristic changes and metabolic pathways were analyzed in HIV-infected patients with different degrees of abnormal glucose and lipid metabolism. Spearman’s partial correlation was used to analyze the association between amino acids, biochemical parameters, and inflammatory cytokines. The results showed that the main metabolic pathways of the eighteen differential metabolites involved were arginine biosynthesis and metabolism, methionine cycle, and tryptophan metabolism. Fourteen differential amino acid metabolites were positively correlated with nine inflammatory cytokines, including TNF-α, C-reactive protein, IL-1β, and galectin-3 (FDR < 0.1). Kynurenine, ornithine, and homocysteine were positively correlated with fasting blood glucose and insulin resistance index (FDR < 0.1). Our study revealed a multi-pathway imbalance in amino acid metabolism in patients with HIV/AIDS, which was significantly correlated with inflammation and insulin resistance.

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The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors acknowledge the financial support of the National Key Research and Development Program of China (2022YFC2304800), the National Natural Science Foundation of China (82072265), the Science and Technology Project of Guangzhou (20220020285, 20220020276, 202201010874 and 2023A03J0813), the Project of Health Science and Technology of Guangzhou (20191A011039), the Medical Science and Technology Foundation of Guangdong (A2023219), the YIWEN Talent Project of The Third Affiliated Hospital of Guangzhou Medical University (2021#9) and the Medical Key Discipline Program of Guangzhou-Viral Infectious Diseases (2021–2023).

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Conceptualization: SZ, ZY, JZ. Methodology: ZY, JZ, YC. Formal analysis and investigation: JZ, YC, MW, LZ, ZY. Writing—original draft preparation: JZ, YC. Writing—review and editing: LL, ZY, SZ. Funding acquisition: LL, ZY, JZ, YC. Resources: LL. Supervision: SZ.

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Correspondence to Linghua Li, Zhongwen Yuan or Shangrong Zou.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Ethical approval

This study was approved by the Ethics Commission of Guangzhou Eighth People’s Hospital, Guangzhou Medical University (ref. no. 201913126), and written informed consent was obtained from all the subjects.

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Handling editor: S. Broeer.

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Zhang, J., Chen, Y., Wang, M. et al. Amino acid metabolism dysregulation associated with inflammation and insulin resistance in HIV-infected individuals with metabolic disorders. Amino Acids 55, 1545–1555 (2023). https://doi.org/10.1007/s00726-023-03325-x

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  • DOI: https://doi.org/10.1007/s00726-023-03325-x

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