Young microbiome transplantation enhances recovery after myocardial infarction
Journal
Aging
Journal Volume
17
Journal Issue
7
Start Page
1852
End Page
1867
ISSN
1945-4589
Date Issued
2025-07-15
Author(s)
You, Min-Yi
Tang, Tony W H
Novita, Suminani
Liu, Yen-Wen
Chang, Kuan-Cheng
Chao, Yu-Kai
Ruan, Shu-Chian
Lin, Po-Ju
Chen, Hung-Chih
Hsieh, Patrick C H
Abstract
Background: The relationship between aging, gut microbiota, and cardiac repair after myocardial infarction (MI) remains unclear. Understanding this interaction may provide novel strategies for improving cardiovascular outcomes in the elderly. Methods: Aged mice were treated with antibiotics followed by fecal microbiota transplantation (FMT) from young or aged donors prior to MI. Cardiac function, gut integrity, immune signaling, and metabolism were evaluated. Gut microbiota and plasma metabolites were also profiled in ST-elevation myocardial infarction (STEMI) patients across age groups. Results: Young FMT improved post-MI cardiac function and reduced infarct size in aged mice. It preserved intestinal barrier integrity, reduced IL-17A–positive immune cells, and attenuated age-related intestinal shortening. Aging was associated with decreased microbial diversity, loss of beneficial taxa such as Akkermansia, and enrichment of inflammatory pathways. Cardiac metabolomics revealed reduced oxidative metabolism and increased lipid reliance in aged mice. In STEMI patients, aging correlated with lower microbiota diversity, altered taxonomic profiles, and shifts in lipid and amino acid metabolism. Conclusions: This study highlights the role of gut microbiota in cardiovascular health and aging. Microbiota transplantation improved cardiac recovery, suggesting its therapeutic potential and offering new insights into the gut–heart axis for future treatments in age-related cardiovascular disease.
Subjects
aging
cardiac repair
gut microbiota
metabolites
myocardial infarction
SDGs
Publisher
Impact Journals LLC
Type
journal article