Results 31 to 40 of about 234,379 (321)
Biological clocks in the duodenum and the diurnal regulation of duodenal and plasma serotonin. [PDF]
PLoS ONE, 2013 Serotonin in blood plasma is primarily synthesized in the duodenum, as brain derived serotonin does not cross the blood-brain barrier. Because serotonin in the brain and retina is synthesized under the control of a circadian clock, we sought to determine
Elizabeth Ebert-Zavos +3 more
doaj +1 more source
Molecules, 2021 Serotonin is a neurotransmitter that plays a crucial role in the regulation of several behavioral and cognitive functions by binding to a number of different serotonin receptors present on the cell surface.
Parijat Sarkar +5 more
doaj +1 more source
Serotonergic and noradrenergic contributions to human motor cortical and spinal motoneuronal excitability [PDF]
arXiv, 2023 Animal models indicate that motor behaviour is shaped by monoamine neurotransmitters released diffusely throughout the brain and spinal cord. We present strong evidence that human motor pathways are equally affected by neuromodulation through noradrenergic and serotonergic projections arising from the brainstem.
arxiv
Neuroreceptor Activation by Vibration-Assisted Tunneling [PDF]
Scientific Reports 5, Article number: 9990 Published 2015, 2015 G protein-coupled receptors (GPCRs) constitute a large family of receptor proteins that sense molecular signals on the exterior of a cell and activate signal transduction pathways within the cell. Modeling how an agonist activates such a receptor is fundamental for an understanding of a wide variety of physiological processes and it is of tremendous ...
arxiv +1 more source
Autism Research, Volume 15, Issue 12, Page 2250-2264, December 2022., 2022 Abstract A growing body of research suggests that locus coeruleus‐norepinephrine (LC‐NE) system may function differently in individuals with autism spectrum disorder (ASD). Understanding the dynamics of both tonic (resting pupil diameter) and phasic (pupil dilation response [PDR] and event‐related potential [ERP]) indices may provide meaningful ...
Yesol Kim +3 more
wiley +1 more source
Theoretical Analysis of Divalent Cation Effects on Aptamer Recognition of Neurotransmitter Targets [PDF]
arXiv, 2023 Aptamer-based sensing of small molecules such as dopamine and serotonin in the brain, requires characterization of the specific aptamer sequences in solutions mimicking the in vivo environment with physiological ionic concentrations. In particular, divalent cations (Mg2+ and Ca2+) present in brain fluid, have been shown to affect the conformational ...
arxiv
Role of serotonin on pituitary-thyroid functions and antioxidants in diabetic male rats
Kufa Journal for Veterinary Medical Sciences, 2023 Diabetes mellitus causes an increase in oxidative stress. Serotonin is a hormone its level in circulation reduced in diabetes; recently, it has been found to possess antioxidant qualities.
Sumayah Faruq Kasim, Fouad Ziedan Hamzah
doaj +1 more source
Reward and adversity processing circuits, their competition and interactions with dopamine and serotonin signaling [PDF]
, 2013 We propose that dACC, AI and caudolateral OFC(clOFC) project to lateral habenula (LHb) and D2 loop of ventral striatum (VS), forming a functional adversity processing circuit, directed towards inhibitory avoidance and self-control. This circuit learns what is bad or harmful to us and predicts risks, to stop us from going/moving for bad or suboptimal ...
arxiv +1 more source
Children's health in the digital age [PDF]
International Journal of Environmental Research and Public Health,
2020, 17(9), 3240, 2020 Environmental studies, metabolic research, and state of the art in neurobiology point towards the reduced amount of natural day and sunlight exposure of the developing childs organism, as a consequence of increasingly long hours spent indoors online, as the single unifying source of a whole set of health risks identified worldwide, as is made clear in ...
arxiv +1 more source
Neuron, 2003 Rhythmic whisker movements, called "whisking," are produced by a brainstem central pattern generator (CPG) that uses serotonin to induce periodic firing in facial motorneurons. During active touch, motor cortex could regulate whisking frequency by controlling the rate of firing of the serotonergic neurons.
openaire +3 more sources