Mechanistic description
Astrocyte-Neuron Lactate Shuttle Enhancement via Pharmacological Activation of Monocarboxylate Transporters
Evidence for (4)
Metabolomic profiling of AD vs. control prefrontal cortex reveals significantly elevated lactate/creatine ratio in affected regions
Conditional MCT4 knockout in astrocytes reduces neuronal viability under metabolic stress
Lactate administration rescues memory deficits in rodent AD models through NMDAR signaling mechanisms
Human PET studies confirm reduced cerebral glucose metabolism precedes measurable cognitive decline by 5-10 years
Evidence against (4)
The ANLS hypothesis remains contested - lactate as primary neuronal energy substrate under normal conditions lacks consensus
MCT4 conditional knockout does not impair baseline brain function - loss of astrocytic MCT4 in adult mice shows minimal behavioral phenotypes
Direct neuronal glucose oxidation is sufficient for function - neurons maintain robust oxidative metabolism without astrocyte-derived lactate
Lactate accumulation may drive neuroinflammation through M2 microglial polarization
Bayesian persona consensus
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