The main concern in modeling weighted networks is the choice of a weighting matrix. For a spatially embedded network like the brain it would generally be appropriate to use some measure of physical distance between nodes as a weighting factor. However, the length of axonal tracts between human brain regions is not yet well-known. An alternative weighting factor, more easily estimated, is a measure of the functional distance between connected regions, e.g., di,j = 1 − wi,j, where wi,j is the wavelet correlation coefficient for regions i and j. See
Axon
They are essential for the proper functioning of the nervous system, enabling communication between different parts of the brain and body.
PubCompare.ai's intelligent algorithms can help researchers identify the optimal protocols and products for their axon-related experiments, streamlining the research process and enhancing reproducibility and accuracy.
Experience the future of scientific discovery with this AI-driven platform that compares data from literature, pre-prints, and patents to locate the best protocols for your axon studies.
Most cited protocols related to «Axon»
The main concern in modeling weighted networks is the choice of a weighting matrix. For a spatially embedded network like the brain it would generally be appropriate to use some measure of physical distance between nodes as a weighting factor. However, the length of axonal tracts between human brain regions is not yet well-known. An alternative weighting factor, more easily estimated, is a measure of the functional distance between connected regions, e.g., di,j = 1 − wi,j, where wi,j is the wavelet correlation coefficient for regions i and j. See
Micropipette fabrication and data acquisition were as described previously for
undiseased donor heart[85] (link). Axopatch 200 amplifiers, Digidata 1200 converters,
and pClamp software were used (Axon Instruments/Molecular Devices). Experiments
were performed at 37°C.
The standard bath solution contained, in mM: NaCl 144,
NaH2PO4 0.33, KCl 4.0, CaCl2 1.8,
MgCl2 0.53, Glucose 5.5, and HEPES 5.0 at pH of 7.4, and pipette
solutions contained K-aspartate 100, KCl 25, K2ATP 5,
MgCl2 1, EGTA 10 and HEPES 5. The pH was adjusted to 7.2 by KOH
(+15−20 mM K+).
For L-type Ca2+ current measurement, the bath solution contained
in mM: tetraethylammonium chloride (TEA-Cl) 157, MgCl2 0.5, HEPES 10,
and 1 mM CaCl2, or BaCl2, or SrCl2 (pH 7.4 with
CsOH). The pipette solution contained (in mM) CsCl 125, TEA-Cl 20, MgATP 5,
creatine phosphate 3.6, EGTA 10, and HEPES 10 (pH 7.2 with CsOH).
For Na+/Ca2+ exchange current measurement, the
bath solution contained, (in mM): NaCl 135, CsCl 10, CaCl2 1, MgCl21, BaCl2 0.2, NaH2PO4 0.33, TEACl 10, HEPES 10,
glucose 10 and (in µM) ouabain 20, nisoldipine 1, lidocaine 50, pH 7.4.
The pipette solution contained (in mM): CsOH 140, aspartic acid 75, TEACl 20,
MgATP 5, HEPES 10, NaCl 20, EGTA 20, CaCl2 10 (pH 7.2 with CsOH).
Most recents protocols related to «Axon»
Example 2
The influence of propionic acid on the relative axonal density, the demyelination of the white matter, and the number of CD3+-cells is shown in
Example 10
To analyze the oligodendrocyte-lineage cells differentiated from oNPCs, detailed immunohistochemistry was conducted with several oligodendrocyte markers. The transplanted oNPCs differentiated into Olig2+ immature and GST-pi+ mature oligodendrocytes (
To evaluate the distribution of myelin after cell transplantation, electron microscopic examination was performed at the lesion epicenter. In the oNPC group, immature myelin sheaths derived from engrafted human cells (nanogold-labeled Stem121+) were frequently observed (
Example 3
Alternatively or in addition to all of the foregoing as it relates to gray matter, the invention further contemplates that white matter fA (fractional anisotropy) can be employed in a manner analogous to the gray matter atrophy as discussed herein in various embodiments.
Diffusion Tensor Imaging (DTI) assesses white matter, specifically white matter tract integrity. A decrease in fA can occur with either demyelination or with axonal damage or both. One can assess white matter substructures including optic nerve and cervical spinal cord.
MRIs of brain including high cervical spinal cord to be done at month 6, 1 year, and 2 years. If a decrease in fA of 10% is observed in fA of 2 tracts, treat with estriol to halt this decrease. Alternatively if fA is decreased by 10% in only one tract but that tract is associated with clinical deterioration of the disability served by that tract, treat with estriol. Poorer scores in low contrast visual acuity would correlate with decreased fA of optic nerve, while poorer motor function would correlate with decreased fA in motor tracts in cervical spinal cord.
subject to the constraint that the starting and ending positions were the tracked positions of the base and tip of the DF. Using the centerline curves for each DF at each time point, we then calculated the absolute tip displacement, DF length, and mean tip fluorescence intensity and were able to extract the following metrics: average filopodial tip speed calculated as the average of the instantaneous speeds (absolute tip displacement per 5 s interval) between successive timepoints; percent motile, percent of total DF population with average tip speeds greater than 0.0128 µm/s (motile; one pixel displacement or greater per 5 s interval) or less than 0.0128 µm/s (non-motile); percent time motile, the percent of time per DF in which instantaneous speed was greater than 0.0128 µm/s; average length, the distance from base to tip along the centerline curve, median protrusion or retraction rate, the positive or negative change in length between successive timepoints, when instantaneous change in length was greater than ±0.0128 µm/s (motile); mean fluorescence intensity for a circular area of 384 nm radius surrounding the distal DF tip with non-cell background omitted; fluorescence intensity variance, a measure of the spread of intensity values compared to the mean. Fluorescence intensity values were normalized for expression by the minimum local intensity during the duration of imaging. For defining motile versus non-motile filopodia, or substantiative protrusion/retraction rates, a threshold of 0.0128 µm/s was chosen as it represents one pixel (effective size at 100X = 0.064 µm) displacement per 5-s interval and undistinguishable from tracking error. Neurite morphology was measured using the ImageJ plug-in Simple Neurite Tracer (Longair et al., 2011 (link)). Tracings were used to determine the number and length of primary and higher order neurites, and length of the axon (the longest Tau-positive process). Protrusion and spine density was determined by counting proturbences or dendritic spines along a length of dendrite. PSD95 foci analysis was performed by generating a binary mask of foci, and using the automated 2D tracking module in NIS-Elements (Nikon) to follow their trajectories.
Top products related to «Axon»
More about "Axon"
These slender structures are responsible for transmitting electrical signals from the cell body to other cells, enabling communication throughout the brain and body.
The study of axons is essential for understanding the complexities of neural networks and their various applications.
Researchers can leverage advanced tools and software to enhance their axon-related experiments.
The PClamp 10 software, for instance, provides a comprehensive suite of electrophysiology tools for recording and analyzing neuronal signals, including those from axons.
The Axopatch 200B amplifier, paired with the Clampfit 10 analysis software, offers a powerful platform for studying the electrical properties of axons.
Additionally, the Digidata 1440A and Multiclamp 700B amplifier systems are widely used in axon research, allowing for precise data acquisition and signal processing.
The GenePix Pro 6.0 software, on the other hand, can be utilized for high-throughput analysis of gene expression patterns related to axon development and function.
To further optimize the research process, the AI-driven platform PubCompare.ai can be a valuable resource.
By comparing data from literature, preprints, and patents, PubCompare.ai's intelligent algorithms can help researchers identify the best protocols and products for their axon-related studies, streamlining the research process and enhancing reproducibility and accuracy.
Whether you're investigating the role of axons in neural communication, exploring their developmental mechanisms, or seeking to harness their potential in therapeutic applications, the tools and resources mentioned above can greatly contribute to your scientific discovery.
Experiecnce the future of axon research with PubCompare.ai and the suite of electrophysiology software and hardware.