Dopamine is derived from an amino acid, phenylalanine, which must be obtained through
the diet. Dopamine, known primarily to be a neurotransmitter involved in almost any higher …

The dopaminergic and opiodergic reward pathways of the brain are critical for survival since
they provide the pleasure drives for eating, love and reproduction; these are called 'natural …

Human personality traits which can be reliably measured by any of a number of rating
scales, show a considerable heritable component1, 2. The tridimensional personality …

Twin and adoption studies suggest that 30 to 60% of the variance in many personality traits
is due to inherited factors. However, there is little knowledge of the number or identity of the …

Conceptual and technological advances in cognitive neuroscience and molecular genetics
have the potential to identify the pathogenesis of psychiatric disorders. This article reviews …

Brain dopamine receptors are the primary targets in the medical treatment of schizophret~
Parkinson's di~, a~ e H=~ aSto~'s chorea.~ ptor ant~,, or~(or neuroleptics) such as halope …

Associations have been reported of the seven-repeat (7R) allele of the human dopamine
receptor D4 (DRD4) gene with both attention-deficit/hyperactivity disorder and the …

The dopamine D4 receptor gene (DRD4) has an expressed polymorphism in the third exon
that may have functional relevance. The polymorphism exists at two levels. At the higher …

Dopamine is an important neurotransmitter involved in motor control, endocrine function,
reward, cognition and emotion. Dopamine receptors belong to the superfamily of G protein …

Drug dependence is a chronic, relapsing disorder in which compulsive drug-seeking and
drug-taking behaviours persist despite serious negative consequences. Addictive …