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Dopamine beta (β)-hydroxylase deficiency is a human medical condition involving inadequate dopamine beta-hydroxylase. It is characterized by increased amounts of serum dopamine and the absence of norepinephrine (NE) and epinephrine. Dopamine is released, as a false neurotransmitter, in place of norepinephrine (aka noradrenaline and ...
Tyrosine hydroxylase deficiency (THD) is a disorder caused by disfunction of tyrosine hydroxylase, an enzyme involved in the biosynthesis of dopamine. This condition is one of the causes of dopa-responsive dystonia .
A dopamine reuptake inhibitor (DRI) is a class of drug which acts as a reuptake inhibitor of the monoamine neurotransmitter dopamine by blocking the action of the dopamine transporter (DAT). Reuptake inhibition is achieved when extracellular dopamine not absorbed by the postsynaptic neuron is blocked from re-entering the presynaptic neuron.
Dopamine is a neurotransmitter involved in the function of many areas of the body, such as digestion, sleep, learning and emotional health, including how one feels pleasure and reward.
Conversely, these levels are decreased and the rewarding properties of BSR are blocked following administration of drugs that antagonize dopamine receptors or reduce the amount of extracellular dopamine, by promoting either degradation or re-uptake of the neurotransmitter. While dopamine is generally considered to be the main neurotransmitter ...
Dopamine released at this site inhibits the secretion of prolactin from anterior pituitary gland lactotrophs by binding to dopamine receptor D2. Some antipsychotic drugs block dopamine in the tuberoinfundibular pathway, which can cause an increase in the amount of prolactin in the blood ( hyperprolactinemia ).
The anticipation of most types of rewards increases the level of dopamine in the brain, [4] and many addictive drugs increase dopamine release or block its reuptake into neurons following release. [5] Other brain dopamine pathways are involved in motor control and in controlling the release of various hormones.
Feeding, social interaction, and sexual activity all release dopamine subject to inhibition of 5-HT 2C. Increased 5-HT 2C expression reduces dopamine release in both the presence and absence of stimuli. Conditions that increase cytokine levels in the human body may have potential to raise 5-HT 2C gene expression in the brain. This could ...