Article1 min read·Published Sep 2025

Exploring Organ-Specific Extracellular Vesicles in Metabolic Improvements Following Bariatric Surgery in Youth With Obesity

Part of Adolescent Bariatric Surgery 39 items

pubmed.ncbi.nlm.nih.gov

Michael Helmrath

Objective: Vertical sleeve gastrectomy (VSG) promotes significant metabolic improvements, though the underlying molecular mechanisms are not fully understood. Emerging evidence suggests that small extracellular vesicles (sEVs) contribute to metabolic improvements post VSG, such as improved fatty liver disease or adipose tissue function; however, it is unclear how different organ-specific sEVs interact with various metabolic parameters. The objective of this study is to establish the role of organ-specific sEVs in the metabolic improvements post VSG. Methods: Demographic and anthropometric data, metabolic parameters, and sEV samples were collected pre VSG and 3-6 months post VSG in youth with obesity. sEV RNA was sequenced for bioinformatics analyses. Results: A significant reduction of the liver-enriched mRNA cargo in sEVs was observed post VSG, whereas adipose-enriched mRNA cargo showed no such reduction. Liver-enriched mRNA cargo correlated with BMI, leptin, and resistin 6 months post VSG. Analysis of delta values (post minus pre surgery) revealed that adipose-enriched mRNA cargo correlated with markers of liver damage, whereas liver-derived mRNA cargo correlated with branched-chain amino acids. Conclusions: Following VSG, significant changes occur in the liver-enriched mRNA cargo of sEVs. Liver-derived sEVs appear to influence adipose metabolism, whereas adipose-derived sEVs are linked with liver function, suggesting dynamic intertissue cross talk that shapes systemic meta

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Article · Sep 2025 · 1 min read

In brief

This study investigates how organ-specific small extracellular vesicles mediate metabolic improvements in adolescents following vertical sleeve gastrectomy. Researchers found significant post-surgical changes in liver-derived vesicle cargo that correlate with metabolic markers, revealing dynamic cross-talk between liver and adipose tissue in driving systemic metabolic benefits.

Written by the GCMD Library team from the article.

Michael Helmrath

Statements in this article

Vertical sleeve gastrectomy promotes significant metabolic improvements in youth with obesity.
EstablishedObjective
Small extracellular vesicles contribute to metabolic improvements post vertical sleeve gastrectomy, including improved fatty liver disease and adipose tissue function.
ResearchObjective
Demographic and anthropometric data, metabolic parameters, and small extracellular vesicle samples were collected pre vertical sleeve gastrectomy and 3-6 months post vertical sleeve gastrectomy in youth with obesity.
ResearchMethods
A significant reduction of liver-enriched mRNA cargo in small extracellular vesicles was observed post vertical sleeve gastrectomy.
ResearchResults
Adipose-enriched mRNA cargo in small extracellular vesicles showed no reduction post vertical sleeve gastrectomy.
ResearchResults
Liver-enriched mRNA cargo correlated with BMI, leptin, and resistin 6 months post vertical sleeve gastrectomy.
ResearchResults
Adipose-enriched mRNA cargo correlated with markers of liver damage when comparing post-surgery to pre-surgery values.
ResearchResults
Liver-derived mRNA cargo correlated with branched-chain amino acids when comparing post-surgery to pre-surgery values.
ResearchResults
Liver-derived small extracellular vesicles appear to influence adipose metabolism following vertical sleeve gastrectomy.
ResearchConclusions
Adipose-derived small extracellular vesicles are linked with liver function following vertical sleeve gastrectomy.
ResearchConclusions