Molecular targets of caffeine in the central nervous system.
Level 5 - mechanism / opinion, no new human data
Narrative review summarizing molecular mechanisms and broad health effects without systematic search methodology or primary data.
PubMed 39168558 · doi:10.1016/bs.pbr.2024.06.012
What was done
This narrative review chapter summarizes the molecular targets, neurochemical mechanisms, and potential therapeutic and adverse effects associated with caffeine consumption in the central nervous system.
What was found
The abstract reports no quantitative metrics or effect sizes. It qualitatively describes caffeine's primary mechanisms, including antagonism of adenosine receptors, stimulation of dopamine expression, modulation of calcium influx, inhibition of phosphodiesterases, and inhibition of acetylcholinesterase. It further notes associations with reduced amyloid-beta accumulation, decreased tau protein phosphorylation, antioxidant and antiapoptotic activity, and potential risk modulation for conditions such as Alzheimer's and Huntington's disease, counterbalanced by adverse effects of excess intake such as sleep disturbances, hypertension, and hallucinations.
Why it matters
The paper provides a high-level overview of the biochemical and cellular pathways through which caffeine acts as a neuromodulator and nutraceutical.
Limits
The abstract describes a broad narrative overview without systematic review methods, meta-analytic data, or original experimental results. Specific effect sizes, dose thresholds, study populations, and causal evidence are not provided.
Cited by
- supports Caffeine exerts its physiological effects by acting on adenosine receptors.