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Acetylcholine is the primary neurotransmitter of the parasympathetic nervous system. [2] [3] In the brain, acetylcholine functions as a neurotransmitter and as a neuromodulator. The brain contains a number of cholinergic areas, each with distinct functions; such as playing an important role in arousal, attention, memory and motivation. [4]
Acetylcholine also operates in many regions of the brain as a neuromodulatory, but using different types of receptors, including nicotinic and muscarinic receptors. [26] Dopamine has a number of important functions in the brain.
Acetylcholinesterase (HGNC symbol ACHE; EC 3.1.1.7; systematic name acetylcholine acetylhydrolase), also known as AChE, AChase or acetylhydrolase, is the primary cholinesterase in the body. It is an enzyme that catalyzes the breakdown of acetylcholine and some other choline esters that function as neurotransmitters :
Choline acetyltransferase was first described by David Nachmansohn and A. L. Machado in 1943. [6] A German biochemist, Nachmansohn had been studying the process of nerve impulse conduction and utilization of energy-yielding chemical reactions in cells, expanding upon the works of Nobel laureates Otto Warburg and Otto Meyerhof on fermentation, glycolysis, and muscle contraction.
However, α3β2 receptors synthesized in different locations of the brain may have differing regulatory properties. this is due to the cytoplasmic region in which the receptor is being formulated. Even though, there have been theories, how the increase in the receptors and uptaking of acetylcholine because of smoking nicotine can cause ...
A cholinergic neuron is a nerve cell which mainly uses the neurotransmitter acetylcholine (ACh) to send its messages. Many neurological systems are cholinergic.Cholinergic neurons provide the primary source of acetylcholine to the cerebral cortex, and promote cortical activation during both wakefulness and rapid eye movement sleep. [1]
Acetylcholine is known to promote wakefulness in the basal forebrain. Stimulating the basal forebrain gives rise to acetylcholine release, which induces wakefulness and REM sleep, whereas inhibition of acetylcholine release in the basal forebrain by adenosine causes slow wave sleep.
Acetylcholine is synthesized in the cytoplasm of the neuron from choline and acetyl-CoA. Choline acetyltransferase is the enzyme that synthesizes acetylcholine and is often used as a marker in research relating to acetylcholine production. Neurons that utilize acetylcholine are called cholinergic neurons and they are very important in muscle ...