Results 41 to 50 of about 549,266 (339)

Neuroprotective and Neuromodulatory Effects Induced by Cannabidiol and Cannabigerol in Rat Hypo-E22 cells and Isolated Hypothalamus

open access: yesAntioxidants, 2020
Background: Cannabidiol (CBD) and cannabigerol (CBG) are non-psychotropic terpenophenols isolated from Cannabis sativa, which, besides their anti-inflammatory/antioxidant effects, are able to inhibit, the first, and to stimulate, the second, the appetite
Viviana di Giacomo   +10 more
doaj   +1 more source

Influence of intra-abomasal administration of L-DOPA on circulating catecholamines and feed intake in cattle

open access: yesFrontiers in Animal Science, 2023
Dopamine has multiple physiological functions including feed intake control in which it can act as an anorectic or orexigenic agent. This study had the objective to evaluate intra-abomasal administration of L-DOPA (levodopa; L-3,4-dihydroxyphenylalanine)
Eriton E. L. Valente   +5 more
doaj   +1 more source

Developmental Neurotransmitters? [PDF]

open access: yesNeuron, 2002
Previous studies support an early role for neurotransmitter signaling before synaptogenesis, but puzzlingly, a neurological phenotype is absent in embryonic mice that lack vesicular release. Demarque et al. (in this issue of Neuron) now report that early release of transmitter is unconventional in not requiring action potentials, Ca(2+) entry, or ...
Owens, David F., Kriegstein, Arnold R.
openaire   +2 more sources

A receptor-based analysis of local ecosystems in the human brain. [PDF]

open access: yes, 2017
BackgroundAs a complex system, the brain is a self-organizing entity that depends on local interactions among cells. Its regions (anatomically defined nuclei and areas) can be conceptualized as cellular ecosystems, but the similarity of their functional ...
Janušonis, Skirmantas
core   +1 more source

Amyloid pathology induces dysfunction of systemic neurotransmission in aged APPswe/PS2 mice

open access: yesFrontiers in Neuroscience, 2022
This study aimed to investigate how amyloid pathology affects the functional aspects of neurotransmitter systems in Alzheimer’s disease. APPswe/PS2 mice (21 months of age) and wild-type (WT) mice underwent positron emission tomography (PET) and magnetic ...
Se Jong Oh   +8 more
doaj   +1 more source

Inactivation of presenilins causes pre-synaptic impairment prior to post-synaptic dysfunction [PDF]

open access: yes, 2010
Synaptic dysfunction is widely thought to be a pathogenic precursor to neurodegeneration in Alzheimer’s disease (AD), and the extent of synaptic loss provides the best correlate for the severity of dementia in AD patients.
Ho, Angela   +5 more
core   +1 more source

An in vivo biosensor for neurotransmitter release and in situ receptor activity. [PDF]

open access: yes, 2010
Tools from molecular biology, combined with in vivo optical imaging techniques, provide new mechanisms for noninvasively observing brain processes. Current approaches primarily probe cell-based variables, such as cytosolic calcium or membrane potential ...
Griesbeck, Oliver   +6 more
core   +2 more sources

Striatonigrostriatal Spirals in Addiction

open access: yesFrontiers in Neural Circuits, 2021
A biological reward system is integral to all animal life and humans are no exception. For millennia individuals have investigated this system and its influences on human behavior.
Andy Sivils   +2 more
doaj   +1 more source

The role of fibroblast growth factors in cell and cancer metabolism

open access: yesFEBS Letters, EarlyView.
Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley   +1 more source

A Mathematical Model of Tripartite Synapse: Astrocyte Induced Synaptic Plasticity

open access: yes, 2012
In this paper we present a biologically detailed mathematical model of tripartite synapses, where astrocytes modulate short-term synaptic plasticity. The model consists of a pre-synaptic bouton, a post-synaptic dendritic spine-head, a synaptic cleft and ...
Majumdar, Kaushik, Tewari, Shivendra
core   +1 more source

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