Results 41 to 50 of about 116,827 (301)

Punishment Prediction by Dopaminergic Neurons in Drosophila [PDF]

open access: yesCurrent Biology, 2005
The temporal pairing of a neutral stimulus with a reinforcer (reward or punishment) can lead to classical conditioning, a simple form of learning in which the animal assigns a value (positive or negative) to the formerly neutral stimulus. Olfactory classical conditioning in Drosophila is a prime model for the analysis of the molecular and neuronal ...
Riemensperger, Thomas   +4 more
openaire   +2 more sources

Suppressed microRNA-96 inhibits iNOS expression and dopaminergic neuron apoptosis through inactivating the MAPK signaling pathway by targeting CACNG5 in mice with Parkinson’s disease

open access: yesMolecular Medicine, 2018
Background There have been a number of reports implicating the association of microRNAs (miRs) and the MAPK signaling pathway with the dopaminergic neuron, which is involved in the development of Parkinson’s disease (PD).
Yue Dong, Li-Li Han, Zhong-Xin Xu
doaj   +1 more source

Attenuated dopamine signaling after aversive learning is restored by ketamine to rescue escape actions

open access: yeseLife, 2021
Escaping aversive stimuli is essential for complex organisms, but prolonged exposure to stress leads to maladaptive learning. Stress alters neuronal activity and neuromodulatory signaling in distributed networks, modifying behavior.
Mingzheng Wu   +5 more
doaj   +1 more source

Task-load-dependent activation of dopaminergic midbrain areas in the absence of reward [PDF]

open access: yes, 2011
Dopamine release in cortical and subcortical structures plays a central role in reward-related neural processes. Within this context, dopaminergic inputs are commonly assumed to play an activating role, facilitating behavioral and cognitive operations ...
Böhler, Nico   +6 more
core   +2 more sources

Discovery of nigral dopaminergic neurogenesis in adult mice

open access: yesNeural Regeneration Research, 2016
Parkinson′s disease is characterized by the loss of dopaminergic neurons in the substantia nigra. As a result, intensive efforts have focused upon mechanisms that facilitate the death of mature dopaminergic neurons. Unfortunately, these efforts have been
Brad E Morrison
doaj   +1 more source

Dopaminergic Neurons Intrinsic to the Primate Striatum [PDF]

open access: yesThe Journal of Neuroscience, 1997
Intrinsic, striatal tyrosine hydroxylase-immunoreactive (TH-i) cells have received little consideration. In this study we have characterized these neurons and their regulatory response to nigrostriatal dopaminergic deafferentation. TH-i cells were observed in the striatum of both control and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated ...
R, Betarbet   +7 more
openaire   +2 more sources

Acquisition of the Midbrain Dopaminergic Neuronal Identity [PDF]

open access: yesInternational Journal of Molecular Sciences, 2020
The mesodiencephalic dopaminergic (mdDA) group of neurons comprises molecularly distinct subgroups, of which the substantia nigra (SN) and ventral tegmental area (VTA) are the best known, due to the selective degeneration of the SN during Parkinson’s disease.
Simone Mesman, Marten P. Smidt
openaire   +3 more sources

TDP-43 is a potential marker of dopaminergic neuronal damage caused by atrazine exposure

open access: yesEcotoxicology and Environmental Safety, 2023
Atrazine (ATR) is one of the herbicides widely used worldwide. Meanwhile, it is an environmental endocrine disruptor that can cross the blood-brain barrier and cause damage to the endocrine-nervous system, especially by affecting the normal secretion of ...
Guoliang Li   +5 more
doaj   +1 more source

The Sources of Reactive Oxygen Species and Its Possible Role in the Pathogenesis of Parkinson’s Disease

open access: yesParkinson's Disease, 2018
Parkinson’s disease (PD) is the second most common neurodegenerative disorder characterized by progressive loss of dopaminergic neurons in the substantia nigra.
Minrui Weng   +5 more
doaj   +1 more source

HIV-1 gp120 neurotoxicity proximally and at a distance from the point of exposure: Protection by rSV40 delivery of antioxidant enzymes

open access: yesNeurobiology of Disease, 2009
Toxicity of HIV-1 envelope glycoprotein (gp120) for substantia nigra (SN) neurons may contribute to the Parkinsonian manifestations often seen in HIV-1-associated dementia (HAD).
Jean-Pierre Louboutin   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy