Results 61 to 70 of about 147,933 (225)

Caffeine increases striatal dopamine D2/D3 receptor availability in the human brain

open access: yesTranslational Psychiatry, 2015
Caffeine, the most widely consumed psychoactive substance in the world, is used to promote wakefulness and enhance alertness. Like other wake-promoting drugs (stimulants and modafinil), caffeine enhances dopamine (DA) signaling in the brain, which it ...
N. Volkow   +9 more
semanticscholar   +1 more source

Cocaine Effects on Dopaminergic Transmission Depend on a Balance between Sigma-1 and Sigma-2 Receptor Expression. [PDF]

open access: yes, 2018
gma σ1 and σ2 receptors are targets of cocaine. Despite sharing a similar name, the two receptors are structurally unrelated and their physiological role is unknown. Cocaine increases the level of dopamine, a key neurotransmitter in CNS motor control and
Aguinaga Andrés, David   +6 more
core   +1 more source

Identification of dopamine receptors across the extant avian family tree and analysis with other clades uncovers a polyploid expansion among vertebrates

open access: yesFrontiers in Neuroscience, 2015
Dopamine is an important central nervous system transmitter that functions through two classes of receptors (D1 and D2) to influence a diverse range of biological processes in vertebrates.
Asher eHaug-Baltzell   +8 more
doaj   +1 more source

The effects of an adenosine A(2A) agonist as an adjunctive treatment to alleviate sensorimotor gating deficits in a rodent model of schizophrenia [PDF]

open access: yes, 2020
The adenosine system has become a promising target for the treatment of schizophrenia due to its unique relationship with dopamine D2 receptors. Dopamine D2 receptors display heightened sensitivity in schizophrenia, and inhibition of these receptors has ...
Rauhuff, Hannah
core   +1 more source

Central interaction of ascorbic acid and D2 dopamine receptors on spatial learning and memory in adult male rats [PDF]

open access: yesThe Iranian Journal of Veterinary Science and Technology, 2014
Previous studies had reported that extracellular levels of ascorbic acid have modulatory effects on dopamine receptors. Both ascorbic acid and dopamine receptor have an important role in learning and memory processes.
Sima Nasri   +4 more
doaj   +1 more source

Dopamine elevates and lowers astroglial Ca(2+) through distinct pathways depending on local synaptic circuitry [PDF]

open access: yes, 2016
Whilst astrocytes in culture invariably respond to dopamine with cytosolic Ca(2+) rises, the dopamine sensitivity of astroglia in situ and its physiological roles remain unknown. To minimize effects of experimental manipulations on astroglial physiology,
Bard, L   +6 more
core   +1 more source

Distinct roles of presynaptic dopamine receptors in the differential modulation of the intrinsic synapses of medium-spiny neurons in the nucleus accumbens

open access: yesBMC Neuroscience, 2007
Background In both schizophrenia and addiction, pathological changes in dopamine release appear to induce alterations in the circuitry of the nucleus accumbens that affect coordinated thought and motivation. Dopamine acts principally on medium-spiny GABA
Schmauss Claudia   +2 more
doaj   +1 more source

Amphetamine Promotes Cortical Up State in Part Via Dopamine Receptors

open access: yesFrontiers in Pharmacology, 2021
Cortical neurons oscillate between Up and Down states during slow wave sleep and general anesthesia. Recent studies show that Up/Down oscillations also occur during quiet wakefulness.
Guofang Shen, Wei-Xing Shi, Wei-Xing Shi
doaj   +1 more source

Striatal Dopamine D2/D3 Receptors Mediate Response Inhibition and Related Activity in Frontostriatal Neural Circuitry in Humans

open access: yesJournal of Neuroscience, 2012
Impulsive behavior is thought to reflect a traitlike characteristic that can have broad consequences for an individual's success and well-being, but its neurobiological basis remains elusive.
D. Ghahremani   +11 more
semanticscholar   +1 more source

The role of intracerebral dopamine D1 and D2 receptors in sleep‐wake cycles and general anesthesia

open access: yesIbrain, 2022
Dopamine (DA), a monoamine neurotransmitter, is synthesized and released mainly by neurons in the ventral tegmental area and the substantia nigra (SN) pars compacta of the midbrain.
Jie Zhang   +5 more
doaj   +1 more source

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