Circulatory levels of lysophosphatidylcholine species in obese adolescents: Findings from cross-sectional and prospective lipidomics analyses

Sapna Sharma, Yalamanchili Venkata Subrahmanyam, Harish Ranjani, Sidra Sidra, Dharmeshkumar Parmar, Sangeetha Vadivel, Shanthini Kannan, Harald Grallert, Dandamudi Usharani, Ranjit Mohan Anjana, Muthuswamy Balasubramanyam, Viswanathan Mohan, Adamski Jerzy, Venkateswarlu Panchagnula, Kuppan Gokulakrishnan

Research output: Contribution to journalArticlepeer-review

Abstract

Background and aims: Obesity has reached epidemic proportions, emphasizing the importance of reliable biomarkers for detecting early metabolic alterations and enabling early preventative interventions. However, our understanding of the molecular mechanisms and specific lipid species associated with childhood obesity remains limited. Therefore, the aim of this study was to investigate plasma lipidomic signatures as potential biomarkers for adolescent obesity. Methods and results: A total of 103 individuals comprising overweight/obese (n = 46) and normal weight (n = 57) were randomly chosen from the baseline ORANGE (Obesity Reduction and Noncommunicable Disease Awareness through Group Education) cohort, having been followed up for a median of 7.1 years. Plasma lipidomic profiling was performed using the UHPLC-HRMS method. We used three different models adjusted for clinical covariates to analyze the data. Clustering methods were used to define metabotypes, which allowed for the stratification of subjects into subgroups with similar clinical and metabolic profiles. We observed that lysophosphatidylcholine (LPC) species like LPC.16.0, LPC.18.3, LPC.18.1, and LPC.20.3 were significantly (p < 0.05) associated with baseline and follow-up BMI in adolescent obesity. The association of LPC species with BMI remained consistently significant even after adjusting for potential confounders. Moreover, applying metabotyping using hierarchical clustering provided insights into the metabolic heterogeneity within the normal and obese groups, distinguishing metabolically healthy individuals from those with unhealthy metabolic profiles. Conclusion: The specific LPC levels were found to be altered and increased in childhood obesity, particularly during the follow-up. These findings suggest that LPC species hold promise as potential biomarkers of obesity in adolescents, including healthy and unhealthy metabolic profiles.

Original languageEnglish
Pages (from-to)1807-1816
Number of pages10
JournalNutrition, Metabolism and Cardiovascular Diseases
Volume34
Issue number7
DOIs
StatePublished - Jul 2024
Externally publishedYes

Keywords

  • Adolescent obesity
  • Asian Indians
  • Biomarker
  • Lipidomics
  • Lysophosphatidylcholine

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