Phosphatidylcholine and carnitine
Phosphatidylcholine (PC) is the main component of the lipid bilayer structure of cell membranes and an important part of lipoproteins. Phosphatidylcholine is hydrolyzed into choline, glycerophospholipids and fatty acids in the body. Choline enters the brain with the blood circulation system and combines with acetic acid to convert into acetylcholine. When its content increases, the speed of information transmission between brain nerve cells will increase, the memory function will be enhanced, and the brain vitality will also increase significantly. Conversely, as we age, the content of choline in the blood and brain will decrease, causing the body to move slowly, decrease intelligence, decline memory, and gradually develop symptoms of dementia.
Carnitine has two stereoisomers：biologically active L-carnitine and non-biologically active D-carnitine. Carnitine is synthesized from lysine and methionine in the liver and kidney, and then released into the blood. Acetyltransferase synthesizes acetyl-L-carnitine and controls the storage or release of acetyl groups. Carnitine is a factor that delays brain aging. When brain cell metabolism slows to the point where it cannot support its basic cell functions, brain cells will not function well or even die. When the energy metabolism of the brain changes, carnitine can inhibit the increase of ADP, AMP, pyruvate and lactic acid. In addition, carnitine can also promote the transfer of acetyl groups from brain cell mitochondria to form acetylcholine with choline in the cell fluid, thereby increasing the speed of information transmission of brain nerve cells.