Mixed
Mitochondrial dysfunction during aging leads to the release of mitochondrial DAMPs (specifically cell-free mtDNA and TFAM), which trigger sterile inflammation via TLR, NLRP3, and cGAS-STING pathways, thereby driving 'inflamm-aging'.
Focus on maintaining mitochondrial health through regular physical activity, particularly resistance and endurance training, which supports mitochondrial biogenesis and quality control. This helps reduce the release of inflammatory mitochondrial DNA fragments into the bloodstream, potentially lowering chronic age-related inflammation.
One of the consequences of age-related failing MQC and oxidative stress is the release of mitochondria-derived damage-associated molecular patterns (DAMPs). Through their bacterial ancestry, these molecules contribute to mounting an inflammatory response by interacting with receptors similar to those involved in pathogen-associated responses.
Why this rating
Review paper citing multiple primary studies and established pathways; high mechanistic plausibility.
Source
Fueling Inflamm-Aging through Mitochondrial Dysfunction: Mechanisms and Molecular Targets
Anna Picca et al. · International Journal of Molecular Sciences · 2017
DOI 10.3390/ijms18050933
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