Results 51 to 60 of about 1,311,722 (333)

Resonance in the Mouse Ventral Tegmental Area Dopaminergic Network Induced by Regular and Poisson Distributed Optogenetic Stimulation in-vitro

open access: yesFrontiers in Computational Neuroscience, 2020
Neurons in many brain regions exhibit spontaneous, intrinsic rhythmic firing activity. This rhythmic firing activity may determine the way in which these neurons respond to extrinsic synaptic inputs. We hypothesized that neurons should be most responsive
Luuk van der Velden   +2 more
doaj   +1 more source

An analysis of overall network architecture reveals an infinite-period bifurcation underlying oscillation arrest in the segmentation clock

open access: yes, 2012
Unveiling the mechanisms through which the somitogenesis regulatory network exerts spatiotemporal control of the somitic patterning has required a combination of experimental and mathematical modeling strategies.
Santillán, Moisés, Zavala, Eder
core   +1 more source

A framework for quantification and physical modeling of cell mixing applied to oscillator synchronization in vertebrate somitogenesis [PDF]

open access: yes, 2017
In development and disease, cells move as they exchange signals. One example is found in vertebrate development, during which the timing of segment formation is set by a ‘segmentation clock’, in which oscillating gene expression is synchronized across a ...
Bhavna, Rajasekaran   +3 more
core   +4 more sources

Collective cell migration of Dictyostelium without cAMP oscillations at multicellular stages

open access: yesCommunications Biology, 2019
In Dictyostelium discoideum, a model organism for the study of collective cell migration, extracellular cyclic adenosine 3’,5’-monophosphate (cAMP) acts as a diffusible chemical guidance cue for cell aggregation, which has been thought to be important in
Hidenori Hashimura   +3 more
semanticscholar   +1 more source

Local and global spontaneous calcium events regulate neurite outgrowth and onset of GABAergic phenotype during neural precursor differentiation [PDF]

open access: yes, 2003
Neural stem cells can generate in vitro progenitors of the three main cell lineages found in the CNS. The signaling pathways underlying the acquisition of differentiated phenotypes in these cells are poorly understood.
Berridge, Michael J.   +5 more
core   +1 more source

It takes two to tango: NAD+ and sirtuins in aging/longevity control [PDF]

open access: yes, 2016
The coupling of nicotinamide adenine dinucleotide (NAD+) breakdown and protein deacylation is a unique feature of the family of proteins called ‘sirtuins.’ This intimate connection between NAD+ and sirtuins has an ancient origin and provides a ...
Guarente, Leonard, Imai, Shin-ichiro
core   +2 more sources

Experimental Design for Stochastic Models of Nonlinear Signaling Pathways Using an Interval-Wise Linear Noise Approximation and State Estimation. [PDF]

open access: yesPLoS ONE, 2016
BACKGROUND:Computational modeling is a key technique for analyzing models in systems biology. There are well established methods for the estimation of the kinetic parameters in models of ordinary differential equations (ODE).
Christoph Zimmer
doaj   +1 more source

IP3-Dependent Ca2+ Oscillations Switch into a Dual Oscillator Mechanism in the Presence of PLC-Linked Hormones

open access: yesiScience, 2020
Summary: Ca2+ oscillations that depend on inositol-1,4,5-trisphosphate (IP3) have been ascribed to biphasic Ca2+ regulation of the IP3 receptor (IP3R) or feedback mechanisms controlling IP3 levels in different cell types.
Paula J. Bartlett   +3 more
doaj   +1 more source

Stimulation of electro-olfactogram responses in the main olfactory epithelia by airflow depends on the type 3 adenylyl cyclase [PDF]

open access: yes, 2012
Cilia of olfactory sensory neurons are the primary sensory organelles for olfaction. The detection of odorants by the main olfactory epithelium (MOE) depends on coupling of odorant receptors to the type 3 adenylyl cyclase (AC3) in olfactory cilia.
Chen, Xuanmao   +2 more
core   +2 more sources

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Home - About - Disclaimer - Privacy