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Characterization of gut microbiota in mouse models of aging and sarcopenia

Authors
Lee, Seung YunKim, Jong HyukLee, Da YoungHur, Sun Jin
Issue Date
Oct-2023
Publisher
Elsevier GmbH
Keywords
Aging; Alistipes; Gut microbiome; ICR mice; Sarcopenia
Citation
Microbiological Research, v.275
Indexed
SCIE
SCOPUS
Journal Title
Microbiological Research
Volume
275
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/68745
DOI
10.1016/j.micres.2023.127462
ISSN
0944-5013
1618-0623
Abstract
Gut microbiota play vital roles in the maintenance of human health and in various diseases. We aimed to investigate the association of gut microbiota with aging and sarcopenia. This study contained two experimental designs using the ICR mouse model for 1) determining the association between aging and gut microbiota (by analyzing murine fecal samples) and 2) determining the association between sarcopenia and gut microbiota in mice treated with microorganisms or dexamethasone. The composition of the gut microbiota was determined by next-generation sequencing. Marginally significant differences were observed in taxon composition of the gut microbiota depending on age; particularly, the abundance of the genus Alistipes increased with increasing age. In addition, the abundance of the class Bacteroidia decreased with increasing age, whereas that of the genus Oscillibacter increased. The microbiome composition differed between young mice and aging mice with sarcopenia. Moreover, the gut microbiota in aging and sarcopenia showed altered abundances of Alistipes, Lachnospiraceae, and Bacteroides. Although the sample size was small, these results point to similarities in the gut microbiota between aging and sarcopenia and to differences between young and old individuals. The results on gut microbiota obtained in this study form a basis for studying the development of sarcopenia in geriatric animal models in the future. © 2023 Elsevier GmbH
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