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Topic: Nigrostriatal pathway

Related Topics

Tuberoinfundibular pathway

Mesolimbic pathway

Mesocortical pathway

Dopamine

Substantia nigra

Basal ganglia

Antipsychotic

Striatum

Arvid Carlsson

Nucleus accumbens

Functional MRI

Brain

Methylphenidate

Executive function

Antidepressant

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	nigrostriatal pathway,nigrostriatal pathway definition,about nigrostriatal pathway
		Nigrostriatal pathway is the efferent connection between the susbtantia nigra and corpus striatum.
		Nigrostriatal pathway is one of the major dopamine pathways in the brain.
		Nigrostriatal pathway is also implicated in producing tardive dyskinesia, one of the side effects of antipsychotic drugs.
	parkinsonindia.org /nigrostriatalpathway.htm (182 words)

	MedFriendly.com: Nigrostriatal pathway
		A pathway in the brain that connects the substantia nigra with the striatum.
		Dopamine travels along the nigrostriatal pathway as well as other pathways known as the mesocortical, mesolimbic, and tuberoinfundibular pathways.
		Nigrostriatal comes from the Latin word "niger" meaning "fl," (because the substantia nigra appears fl) and the Latin word "stria" meaning "striped"(because the striatum appears striped).
	www.medfriendly.com /nigrostriatalpathway.html (175 words)

	Mesolimbic pathway - Wikipedia, the free encyclopedia
		The mesolimbic pathway is thought to be involved in producing pleasurable feeling, and is often associated with feelings of reward and desire, particularly because of the connection to the nucleus accumbens, which is also associated with these states.
		Because of this, this pathway is heavily implicated in neurobiological theories of addiction.
		Dopamine neurons are lost in the mesolimbic pathway in Parkinson's Disease; however, they are lost far more quickly in the nigrostriatal pathway, and, because deficits do not become apparent until a reduction of 80-90% in the numbers of neurons, their loss here is asymptomatic.
	en.wikipedia.org /wiki/Mesolimbic_pathway (444 words)

	Nigrostriatal pathway (via CobWeb/3.1 planetlab2.tamu.edu) (Site not responding. Last check: 2007-11-06)
		The nigrostriatal pathway is a neural pathway which connects the substantia nigra with the striatum.
		It is one of the major dopamine pathways in the brain, and is particularly involved in the production of movement, as part of a system called the basal ganglia motor loop.
		This pathway is also implicated in producing tardive dyskinesia, one of the side effects of antipsychotic drugs.
	publicliterature.org.cob-web.org:8888 /en/wikipedia/n/ni/nigrostriatal_pathway.html (236 words)

	THE BRAIN FROM TOP TO BOTTOM
		The third, nigrostriatal pathway projects axons from the substantia nigra to the striatum (caudate nucleus and putamen), which is involved in motor control.
		Degeneration of the neurons in this pathway is associated with the trembling and muscular rigidity symptomatic of Parkinson’s disease.
		A fourth dopaminergic pathway worth mentioning is the tuberoinfundibular pathway, which connects the hypothalamus to the pituitary gland, where it influences the secretion of hormones such as prolactin.
	thebrain.mcgill.ca /flash/a/a_03/a_03_cl/a_03_cl_que/a_03_cl_que.html (222 words)

	Neural pathway
		A neural pathway is a neural tract connecting one part of the nervous system with another, usually consisting of bundles of elongated, myelin insultated neurons, known collectively as white matter.
		The first named pathways were evident even in a poorly-preserved gross brain, and were named by the great anatomists of the Renaissance using cadaver material.
		For example, the nigrostriatal pathway, which is degenerated in Parkinson's disease, runs from the substantia nigra (Latin, "fl substance") to the corpus striatum (Latin, "striped body").
	www.mrsci.com /Nervous-System/Neural_pathway.php (430 words)

	Dopamine and substantia nigra
		As brain mesolimbic dopamine pathways have been proposed to be associated with the pathophysiology of psychotic disorders, we thought it would be of interest to examine whether these animals present disturbances in the mesolimbic dopamine system.
		On the contrary, the nigrostriatal pathway did not show any significant alteration in heterozygous reeler mice with regards to the dopaminergic markers examined in substantia nigra cell bodies and dorsal striatum dopamine terminal fields.
		The nigrostriatal dopaminergic neurons of the substantia nigra pars compacta (SNc) and the nondopaminergic neurons of the substantia nigra pars reticulata (SNr) receive a dense synaptic input from the serotonergic neurons of the raphe nuclei.
	lansbury.bwh.harvard.edu /da_and_substantia_nigra.htm (17143 words)

	Dopaminergic pathways - Wikipedia, the free encyclopedia
		The mesocortical pathway transmits dopamine from the VTA to the frontal cortex.
		The nigrostriatal pathway transmits dopamine from the substantia nigra to the striatum.
		The tuberoinfundibular pathway transmits dopamine from the hypothalamus to the pituitary gland.
	en.wikipedia.org /wiki/Dopaminergic_pathways (279 words)

	Other Pathways in the Brain (Site not responding. Last check: 2007-11-06)
		Brain pathways are made up of interconnected neurons along which signals are transmitted from one brain region to another.
		Dopamine is the neurotransmitter used by the reward pathway (also called the mesolimbic pathway, which is closely associated with the mesocortical pathway).
		But there are two other important pathways in the brain that utilize dopamine: the nigrostriatal pathway and the tuberoinfundibular pathway.
	learn.genetics.utah.edu /units/addiction/reward/pathways.cfm (360 words)

	Electrophysiological and Morphological Evidence for a GABAergic Nigrostriatal Pathway -- Rodríguez and ...
		Electrophysiological and Morphological Evidence for a GABAergic Nigrostriatal Pathway -- Rodríguez and González-Hernández 19 (11): 4682 -- Journal of Neuroscience
		Electrophysiological and Morphological Evidence for a GABAergic Nigrostriatal Pathway
		response to the degeneration of dopaminergic nigrostriatal (DA)
	www.jneurosci.org /cgi/content/abstract/19/11/4682 (318 words)

	Dopamine and tyrosine hydroxylase
		We found that Arix is constitutively phosphorylated in vivo at the basal level and that the phosphorylation level is substantially decreased upon stimulation of the PKA pathway.
		In rats with hemi-parkinsonism induced by unilateral lesion of dopaminergic nigrostriatal neurons with 6-hydroxydopamine, D2 antagonists inhibit contralateral turning induced by D2 agonists and augment the levels of neurotensin mRNA in dopaminergically intact striatum.
		Spared nigrostriatal fibers thus may convert L-dopa to dopamine and store and release dopamine in a more physiologically relevant manner in the denervated striatum to mediate better striatal output-dependent motor function.
	lansbury.bwh.harvard.edu /dopamine_and_tyrosine_hydroxylase.htm (18152 words)

	UBEP 2003 Tenth Annual Undergraduate Research Poster Symposium (Site not responding. Last check: 2007-11-06)
		It is a well-established fact that the unilateral electrical stimulation of the nigrostriatal bundle in the rat brain elicits rotational behavior contraversive to the stimulated side.
		The purpose of this study is to develop a correlation between rotational behavior and extracellular dopamine evoked by electrical stimulation using in-vivo microdialysis, a technique that allows simultaneous measures of behavior and dopamine overflow.
		During electrical stimulation of the nigrostriatal pathway, rotational behavior was measured and microdialysis samples were collected.
	lifesciences.asu.edu /ubep2003/participants/amene (255 words)

	Wikinfo \| Dopamine (Site not responding. Last check: 2007-11-06)
		As a member of the catecholamine family, dopamine is a precurser to epinephrine (adrenaline) and norepinephrine (noradrenaline) in the biosynthetic pathways for these neurotransmitters.
		Thus, shortage of dopamine, particularly the death of dopamine neurons in the nigrostriatal pathway, is a cause of Parkinson's disease, in which a person loses the ability to execute smooth, controlled movements.
		Certainly dopamine is released (particularly in areas such as the nucleus accumbens and striatum) by naturally rewarding experiences such as food, sex, drugs of abuse and neutral stimuli that become associated with them.
	www.wikinfo.org /wiki.php?title=Dopamine (750 words)

	Anxiety Zone - Dopamine
		Shortage of dopamine, particularly the death of dopamine neurons in the nigrostriatal pathway, causes Parkinson's disease, in which a person loses the ability to execute smooth, controlled movements.
		Certainly dopamine is released (particularly in areas such as the nucleus accumbens and striatum) by naturally rewarding experiences such as food, sex, use of certain drugs and neutral stimuli that become associated with them.
		This is partly due to the discovery of a class of drugs called the phenothiazines (which block D2 dopamine receptors) that can reduce psychotic symptoms, and partly due to the finding that drugs such as amphetamine and cocaine (which are known to greatly increase dopamine levels) can cause psychosis.
	www.anxietyzone.com /glossary/dopamine.html (919 words)

	Neurobiology of schizophrenia
		The general view for some time has been that the positive symptoms are related to overactivity of the mesolimbic dopamine pathway, whereas the negative symptoms are related to alterations in the dorsolateral prefrontal cortex and other neurotransmitter systems.
		mesocortical pathway, which projects from the brainstem (midbrain) areas to the cortex, particularly the prefrontal cortex which is involved in the temporal organization of behavior, in motivation, planning, attention and social behavior.
		Thus, the behavioral effects of PCP may be due in part to its ability to enhance DA release in the mesolimbic pathway while blocking DA release in the mesocortical pathway.
	www.sci.sdsu.edu /classes/psychology/psy760/schizo.htm (3825 words)

	Exam 2
		D. Two of the above The caudate nucleus- A. has an anterior bulge into the body of the lateral ventricle B. has a tail that borders on the inferior horn C. terminates inferiorly as the amygdala D. A and B are correct.
		A. The nigrostriatal pathway projects to the substantia nigra B. Afferents from the cerebral cortex are excitatory C. Some excitatory afferent pathways utilized dopamine as a neurotransmitter.
		D. Thalamostriate pathway projects mainly to the putamen E. None of the above are incorrect.
	www.csus.edu /org/nrg/carter/course/bio123/exam/123exam3.htm (226 words)

	Untitled
		receptors in the dopamine pathways in the brain, so the normal effect of dopamine release in the relevant synapses is reduced.
		receptors in the mesolimbic pathway of the brain which is thought to produce the intended antipsychotic effect.
		Typical antipsychotics are not particularly selective and also block the same receptors in the mesocortical pathway, tuberoinfundibular pathway and the nigrostriatal pathway.
	www.justblogme.com /kwlovesjcloveskw (304 words)

	Effects of Alpha-2 Adrenoceptor Agonists and Antagonists on Circling Behavior in Rats with Unilateral 6-Hydroxydopamine ...
		To assess the extent of the nigrostriatal dopaminergic
		6-OHDA lesion of the nigrostriatal dopaminergic pathway (Ungerstedt,
		nigrostriatal dopamine pathway, the locus ceruleus and the noradrenergic
	jpet.aspetjournals.org /cgi/content/full/288/2/798 (5134 words)

	AANS.org \| Education and Meetings \| AANS Scientific Journals \| Neurosurgical Focus
		The cells were exposed to glial cell line--derived neurotrophic factor (GDNF) prior to transplantation into rats with unilateral 6-hydroxydopamine lesions of the dopaminergic nigrostriatal pathway.
		Photomicrographs displaying representative TH-immunostained coronal sections of the striatum in a rat with a unilateral 6-OHDA lesion of the nigrostriatal dopaminergic pathway that was transplanted with ventral mesencephalic dopaminergic cells.
		Following lesioning of the right nigrostriatal dopaminergic pathway, there was a consistent dropoff in left forelimb scores at the 1-minute and the 15-minute time points.
	aans.org /education/journal/neurosurgical/sept99/7-3-4.asp?... (5048 words)

	Dopaminergic Mechanisms in Depression and Mania
		However, this focus on a specific pathway, which contains a relatively small proportion of forebrain DA neurons, creates a very real risk that changes in DA activity relevant to affective psychopathology could be obscured, in studies that employ global measures of brain DA function, or apply anatomically nonspecific interventions.
		The major non-dopaminergic afferent projections to the nucleus accumbens, which represent the major output pathways of the limbic system, are from amygdala, hippocampus and prefrontal cortex.
		Each of these three structures is itself innervated by the mesocorticolimbic DA system, and their projections to the nucleus accumbens overlap with one another, and with the mesoaccumbens DA afferents [118; Mesocorticolimbic Dopaminergic Neurons: Functional and Regulatory Roles, this volume [Le Moal].
	www.acnp.org /g4/GN401000093/CH.html (7064 words)

	A new protective protein against Parkinson's disease
		Parkinson's disease is characterized by the progressive degeneration of dopaminergic neurons projecting to a well-defined structure in the brain named the striatum.
		The resulting failure of the nigrostriatal pathway leads to profound dopamine deficiency, causing bradykinesia, tremor and rigidity.
		Since the deficit in striatal dopamine is the main cause of PD symptoms, it appears critical to preserve axon terminals to ensure healthy functioning of the nigrostriatal system.
	www.eurekalert.org /pub_releases/2004-02/cp-anp021004.php (355 words)

	Grant Abstract (Site not responding. Last check: 2007-11-06)
		Denver, Co In Parkinson's disease, the neurocircuitry, called the nigrostriatal pathway, is lost.
		The advantage of the polymer over the neural tissue co-grafts is that the polymer is bio-absorbable, meaning that while the neural fibers are reaching their destination, the polymer is being reabsorbed, eventually leaving only a pure neurocircuit between the substanti nigra and striatum.
		The insight gained by studying the reconstruction of the nigrostriatal pathway for Parkinson's disease carries potential for other neurodegenerative disorders including Huntington's disease, stroke, and spinal cord research.
	www.michaeljfox.org /research/abstract.php?id=90 (403 words)

	Grants for Gene Therapy: National Institute of Neurological Disorders and Stroke (NINDS)
		We have also tested lentiviral delivery of GDNF into the nigrostriatal system of normal aged rhesus and we observed that this factor is able to reverse the age-related degeneration by increasing the levels of DA and its metabolites in the target areas.
		A second issue pertinent to the development of PD gene therapy is to direct different therapeutic genes to each compartment of the diseased nigrostriatal pathway: dopamine neurons and target striatum.
		In the proposed studies, regulated viral vectors will be injected into the lesioned nigrostriatal pathway of rodents with experimental Parkinson's disease in order to induce transgene expression of several neurotrophic factors that have a history of providing potent neurotrophic support for dopamine neurons.
	www.ninds.nih.gov /funding/research/parkinsonsweb/2002gene.htm (4533 words)

	Negative Feedback Regulation of Nigrostriatal Dopamine Release: Mediation by Striatal D1 Receptors -- Saklayen et al. ...
		Gerfen CR, Keefe KA, and Gauda EB (1995) D1 and D2 dopamine receptor function in the striatum: coactivation of D1- and D2-dopamine receptors on separate populations of neurons results in potentiated immediate early gene response in D1-containing neurons.
		Santiago M and Westerink BH (1991) The regulation of dopamine release from nigrostriatal neurons in conscious rats: the role of somatodendritic autoreceptors.
		Trevitt JT, Carlson BB, Correa M, Keene A, Morales M, and Salamone JD (2002) Interactions between dopamine D1 receptors and gamma-aminobutyric acid mechanisms in substantia nigra pars reticulata of the rat: neurochemical and behavioral studies.
	jpet.aspetjournals.org /cgi/content/full/311/1/342 (4659 words)

	Cardozo Neurodegeneration Grant
		Abstract: The objective of this proposal is to define the role that age-dependent accumulation oxidative damage to DNA has in dictating the neuronal loss associated with aging.
		To determine the status of DNA oxidation/DNA repair and stability of the nigrostriatal pathway of wild-type and mOggl knockout mice during aging.
		To evaluate age-dependent effects in the antioxidant defenses of the nigrostriatal system and determine whether the lack of mOggl alters age-dependent changes in antioxidant systems.
	www.umt.edu /cehs/CardozoGrant.htm (311 words)

	The L-dopa response in vascular parkinsonism -- Zijlmans et al. 75 (4): 545 -- Journal of Neurology, Neurosurgery, and ...
		or absence of a macroscopic lesion in the nigrostriatal pathway,
		VP is related to the presence of lesions in or nearby the nigrostriatal
		The nigrostriatal dopaminergic system assessed in vivo by positron emission tomography in healthy volunteer subjects and patients with Parkinson’s disease.
	jnnp.bmjjournals.com /cgi/content/full/75/4/545 (2099 words)

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