Neurotransmitters


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Related to Neurotransmitters: serotonin, dopamine

neurotransmitters

A range of small-molecule chemical substances released by EXOCYTOSIS from a nerve ending on the arrival of a nerve impulse. Neurotransmitters are specific to particular neurons. They interacts with receptors on adjacent structures to trigger off a response, either excitatory or inhibitory. The adjacent structure may be another nerve, a muscle fibre or a gland. The main neurotransmitters are acetylcholine, glycine, glutamate, dopamine, noradrenaline, adrenaline, serotonin, histamine and GABA (gamma-amino-butyric acid). With the exception of the adrenalines all the neurotransmitters are AMINO ACIDS or derivatives of amino acids.

Neurotransmitters

Chemicals within the nervous system that transmit information from or between nerve cells.
References in periodicals archive ?
Indeed, Rosin and Martin (1981) reported significant reductions in uptake of biogenic amine neurotransmitters into synaptosomes after exposure to Aroclor mixtures, whereas Mariussen and Fonnum (2001) recently reported that only noncoplanar PCB congeners inhibited uptake of labeled DA into striatal synaptosomes.
Inhibition of reuptae allows buildup of neurotransmitters in the synapse and activation of the auto-receptors, leading to a decrease in firing activity, said Dr Blier.
Serotonin, famed as the target of Prozac and other antidepressants, acts as a neurotransmitter, relaying signals from one brain cell to the next.
In Alzheimer's disease, however, there is a block in the transport system which carries the neurotransmitters to the axon terminals.
The neurotransmitters and hormones are less effective when their circadian pattern is altered.
It was known that during a child's early brain development, exposure to lead during synaptogenesis affects the release of these critical neurotransmitters but the reason was unclear.
Researchers have been missing a key piece of the taste puzzle: the identity of the messenger, known as a neurotransmitter, that sends information from taste buds to the nerve fibers.
Drugs that seem to have efficacy in depression generally enhance levels of monoamine neurotransmitters such as serotonin or norepinephrine.
Amphetamines such as Dexedrine and Ritalin, known for calming hyper children, boost the flow of neurotransmitters.
Chapters by distinguished international basic and clinical scientists in the field of stress and neurotransmitters offer new insights into stress, stress-related disorders, and their future stressor-specific treatment.
The enzyme can be found in higher concentrations in glial cells and monoamine-releasing neurons, where it breaks down the neurotransmitters serotonin, dopamine, and norepinephrine.

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