Research on Acetyl L-Carnitine suggests that its activity may be related to cholinergic neural transmission and its ability to enhance neuronal metabolism in mitochondria. While some researchers attribute Acetyl L-Carnitine's cholinergic effects to the blocking of postsynaptic inhibitory potentials, others propose direct synaptic stimulation. Based on enhanced cellular energy in mitochondria, human studies show that Acetyl L-Carnitine stabilizes cell membrane fluidity through the regulation of sphingomyelin levels and prevents excessive neuronal degeneration by providing a substrate reservoir for cellular energy production.

Acetyl L-Carnitine has also been shown to enhance hippocampal binding of glucocorticoids and nerve growth factor, reduce oxidative stress, and inhibit excitotoxicity in brain tissue and CSF. These effects contribute to preventing cell death and ischemia-induced neuronal damage. Regarding its effects on the peripheral nervous system, the benefits of Acetyl L-Carnitine supplementation in patients with peripheral neuropathy are attributed to its antioxidant, antiapoptotic, and analgesic activity, as well as its role in nerve regeneration and protection.

PUBLICATIONS ON THE SUBJECT:

** Nutrients. 2020 May 12;12(5):1389. doi:10.3390/nu12051389.

Acetyl-L-Carnitine in Dementia and Other Cognitive Disorders: A Critical Update

** Dementia Neurocognitive Disorder. 2017 Mar;16(1):26-31. doi:10.12779/dnd.2017.16.1.26.

Cerebral Perfusion Changes after Acetyl-L-Carnitine Treatment in Early Alzheimer's Disease

** Free Radic Biol Med. 2007 Feb 1;42(3):371-384.

PI3K/PKG/ERK1/2 signaling pathways involvement in acetyl-L-carnitine neuroprotection

** Neurochem Res. 2017 Jun;42(6):1661-1675.

L-Carnitine and Acetyl-L-Carnitine Roles and Neuroprotection in Developing Brain

** PLoS One. 2016 May 19;11(5):e0155694.

Serum Levels of Acyl-Carnitines along the Continuum from Normal to Alzheimer's Dementia