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Nigrostriatal pathway information


Nigrostriatal pathway
Nigrostriatal pathway (Left and Right in red).
The nigrostriatal pathway is shown here in solid blue, connecting the substantia nigra with the dorsal striatum.
Anatomical terminology
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The nigrostriatal pathway is a bilateral dopaminergic pathway in the brain that connects the substantia nigra pars compacta (SNc) in the midbrain with the dorsal striatum (i.e., the caudate nucleus and putamen) in the forebrain. It is one of the four major dopamine pathways in the brain, and is critical in the production of movement as part of a system called the basal ganglia motor loop. Dopaminergic neurons of this pathway release dopamine from axon terminals that synapse onto GABAergic medium spiny neurons (MSNs), also known as spiny projection neurons (SPNs),[1][2] located in the striatum.

Degeneration of dopaminergic neurons in the SNc is one of the main pathological features of Parkinson's disease,[3] leading to a marked reduction in dopamine function and the symptomatic motor deficits of Parkinson's disease including hypokinesia, tremors, rigidity, and postural imbalance.

  1. ^ David Smith, A.; Paul Bolam, J. (1990-07-01). "The neural network of the basal ganglia as revealed by the study of synaptic connections of identified neurones". Trends in Neurosciences. 13 (7): 259–265. doi:10.1016/0166-2236(90)90106-K. ISSN 0166-2236. PMID 1695400. S2CID 4018397.
  2. ^ Tritsch, NX; Ding, JB; Sabatini, BL (Oct 2012). "Dopaminergic neurons inhibit striatal output through non-canonical release of GABA". Nature. 490 (7419): 262–6. Bibcode:2012Natur.490..262T. doi:10.1038/nature11466. PMC 3944587. PMID 23034651.
  3. ^ Diaz, Jaime. How Drugs Influence Behavior. Englewood Cliffs: Prentice Hall, 1996.

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Nigrostriatal pathway

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pathway, the mesocortical pathway, the nigrostriatal pathway, and the tuberoinfundibular pathway. The mesolimbic pathway and the mesocortical pathway...

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elderly). Although Parkinson's disease is primarily a disease of the nigrostriatal pathway and not the extrapyramidal system, loss of dopaminergic neurons...

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the trend was toward naming pathways by their origin and termination.[citation needed] For example, the nigrostriatal pathway runs from the substantia nigra...

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Other major dopamine pathways include: mesolimbic pathway nigrostriatal pathway tuberoinfundibular pathway Dopamine Schizophrenia Malenka EJ, Nestler SE,...

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Boireau A, Bloch B, Gross CE (August 2000). "Adaptive changes in the nigrostriatal pathway in response to increased 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced...

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from brainstem regions, including the ventral tegmental area and nigrostriatal pathway. The MFB passes through the lateral hypothalamus and the basal forebrain...

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modulated by various parts of the central nervous system, including the nigrostriatal pathway, the basal ganglia, the cerebellum, the vestibular nuclei, and different...

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striatum. The nigral dopaminergic input to the striatum via the nigrostriatal pathway is intimately linked with the striatum's function. The co-dependence...

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Neuromodulation

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been found to be involved in responding to cues related to the reward pathway, enhancing signal detection and sensory attention, regulating homeostasis...

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Hypokinesia

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each other and with dopamine directly. In the basal ganglia, the nigrostriatal pathway is where GABA and dopamine are housed in the same neurons and released...

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Midbrain tegmentum

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is the substantia nigra which is an important part of the nigrostriatal pathway. This pathway serves to coordinate motor movements and when left unbalanced...

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Akinetic mutism

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of akinetic mutism suggest a possible presynaptic deficit in the nigrostriatal pathway, which transmits dopamine. Some patients with akinetic mutism have...

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Vesicular monoamine transporter 2

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histamine—from cellular cytosol into synaptic vesicles. In nigrostriatal pathway and mesolimbic pathway dopamine-releasing neurons, SLC18A2 function is also...

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Dopamine

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substantia nigra pars compacta to the dorsal striatum, termed the nigrostriatal pathway, plays a significant role in the control of motor function and in...

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Parkinsonism

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resulting in the loss of dopaminergic nerve terminals along the nigrostriatal pathway, similar to idiopathic PD, MSA, PSP, CBD, and DLB. Barrett KE, Barman...

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Tardive dyskinesia

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primarily from neuroleptic-induced dopamine supersensitivity in the nigrostriatal pathway, with the D2 dopamine receptor being most affected. Neuroleptics...

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Dopamine antagonist

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blockers and benzodiazepines Parkinsonism due to effects on the nigrostriatal pathway - includes tremors, bradykinesia and muscle rigidity risk factors...

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Rett syndrome

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on striatal GABAergic medium spiny neurons. Dysregulation of the nigrostriatal pathway is causative from Parkinson disease (PD) in humans. Toxic and/or...

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Euphoria

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neurotransmission in the dopaminergic pathways that project to the striatum (i.e., the mesolimbic pathway and nigrostriatal pathway). Approximately 5% of the population...

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Oxidopamine

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p-quinone can be obtained. Oxidopamine is directly injected into the nigrostriatal pathway, targeting the dopamine transporters (DAT). This can be done through...

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Classical conditioning

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hypothalamus (LH) is involved in the initiation of eating. The nigrostriatal pathway, which includes the substantia nigra, the lateral hypothalamus,...

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Pars compacta

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neurons of the pars compacta project many of their axons along the nigrostriatal pathway to the dorsal striatum, where they release the neurotransmitter...

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Multiple system atrophy

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resulting in the loss of dopaminergic nerve terminals along the nigrostriatal pathway, similar to idiopathic PD, MSA, PSP, CBD, and DLB. Hodos W (2009)...

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