Accelerated Aging Induced by an Unhealthy High-Fat Diet: Initial Evidence for the Role of Nrf2 Deficiency and Impaired Stress Resilience in Cellular Senescence.
ageing
endothelial cells
high-fat diet
obesity
prediabetes
senescence
stress resistance
unhealthy diet
Journal
Nutrients
ISSN: 2072-6643
Titre abrégé: Nutrients
Pays: Switzerland
ID NLM: 101521595
Informations de publication
Date de publication:
26 Mar 2024
26 Mar 2024
Historique:
received:
22
11
2023
revised:
18
03
2024
accepted:
21
03
2024
medline:
13
4
2024
pubmed:
13
4
2024
entrez:
13
4
2024
Statut:
epublish
Résumé
High-fat diets (HFDs) have pervaded modern dietary habits, characterized by their excessive saturated fat content and low nutritional value. Epidemiological studies have compellingly linked HFD consumption to obesity and the development of type 2 diabetes mellitus. Moreover, the synergistic interplay of HFD, obesity, and diabetes expedites the aging process and prematurely fosters age-related diseases. However, the underlying mechanisms driving these associations remain enigmatic. One of the most conspicuous hallmarks of aging is the accumulation of highly inflammatory senescent cells, with mounting evidence implicating increased cellular senescence in the pathogenesis of age-related diseases. Our hypothesis posits that HFD consumption amplifies senescence burden across multiple organs. To scrutinize this hypothesis, we subjected mice to a 6-month HFD regimen, assessing senescence biomarker expression in the liver, white adipose tissue, and the brain. Aging is intrinsically linked to impaired cellular stress resilience, driven by dysfunction in Nrf2-mediated cytoprotective pathways that safeguard cells against oxidative stress-induced senescence. To ascertain whether Nrf2-mediated pathways shield against senescence induction in response to HFD consumption, we explored senescence burden in a novel model of aging: Nrf2-deficient (Nrf2
Identifiants
pubmed: 38612986
pii: nu16070952
doi: 10.3390/nu16070952
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIH HHS
ID : RF1AG072295
Pays : United States
Organisme : NIH HHS
ID : R01AG055395
Pays : United States
Organisme : NIH HHS
ID : R01AG068295
Pays : United States
Organisme : NIH HHS
ID : R01AG070915
Pays : United States
Organisme : NIH HHS
ID : R03AG070479
Pays : United States
Organisme : NIH HHS
ID : K01AG073613
Pays : United States
Organisme : NIH HHS
ID : K01AG073614
Pays : United States
Organisme : NCI NIH HHS
ID : R01CA255840
Pays : United States
Organisme : NINDS NIH HHS
ID : R01NS100782
Pays : United States