Abstract：
:We hypothesized that re-entry into the cell cycle may be associated with reactive gliosis surrounding neural prostheses, and that administration of a cell cycle inhibitor (flavopiridol) at the time of surgery would reduce this effect. We investigated the effects of flavopiridol on recording quality and impedance over a 28-day time period and conducted histology at 3 and 28 days post-implantation. Flavopiridol reduced the expression of a cell cycle protein (cyclin D1) in microglia surrounding probes at the 3-day time point. Impedance at 1 kHz was decreased by drug administration across the study period compared to vehicle controls. Correlations between recording (SNR, units) and impedance metrics revealed a small, but statistically significant, inverse relationship between these variables. However, the relationship between impedance and recording quality was not sufficiently strong for flavopiridol to result in an improvement in SNR or the number of units detected. Our data indicate that flavopiridol is an effective, easily administered treatment for reducing impedance in vivo, potentially through inhibiting microglial encapsulation of implanted devices. This strategy may be useful in stimulation applications, where reduced impedance is desirable for achieving activation thresholds and prolonging the lifetime of the implanted power supply. While improvements in recording quality were not observed, a combination of flavopiridol with a second strategy which enhances neuronal signal detection may enhance these results in future studies.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Purcell EK,Thompson DE,Ludwig KA,Kipke DRdoi
10.1016/j.jneumeth.2009.06.026subject
Has Abstractpub_date
2009-10-15 00:00:00pages
149-57issue
2eissn
0165-0270issn
1872-678Xpii
S0165-0270(09)00344-6journal_volume
183pub_type
杂志文章abstract：:We have developed a new method for culturing cells that maintains their health and sterility for many months. Using conventional techniques, primary neuron cultures seldom survive more than 2 months. Increases in the osmotic strength of media due to evaporation are a large and underappreciated contributor to the gradu...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(01)00412-5
更新日期：2001-09-30 00:00:00
abstract：:Nitric oxide (NO) is a gas messenger with diverse physiological roles in the nervous system, from modulation of synaptic plasticity and neurogenesis to the mediation of neuronal death. NO production in the brain is catalyzed by three isoforms of NO synthase (NOS) including neuronal NOS (nNOS), inducible NOS and endoth...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.02.006
更新日期：2009-05-15 00:00:00
abstract：:Detecting brain structural changes from magnetic resonance (MR) images can facilitate early diagnosis and treatment of neurological and psychiatric diseases. Many existing methods require an accurate deformation registration, which is difficult to achieve and therefore prevents them from obtaining high accuracy. We de...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.09.001
更新日期：2014-01-15 00:00:00
abstract：:A biotinylated lectin from Ricinus communis (RCA-I) and avidin-biotin-horseradish peroxidase complex (ABC) were used to identify microglial cells in 3-microns-thick sections of formalin-fixed paraffin-embedded brains of adult mice required for quantitative cell kinetic studies. In 3-microns-thick sections of the mouse...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90034-o
更新日期：1993-12-01 00:00:00
abstract：BACKGROUND:Microelectrode arrays have been used successfully for neuronal stimulation both in vivo and in vitro. However, in most instances currents required to activate the neurons have been in un-physiological ranges resulting in neuronal damage and cell death. There is a need to develop electrodes which require less...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.03.024
更新日期：2015-06-15 00:00:00
abstract：:The human movement analysis panel (HMAP) measures separable components of arm motion and simple and complex finger coordination. HMAP testing takes 30min to administer. In separate experiments we have validated the HMAP against the standard grooved pegboard and measures of gait speed, and demonstrated important learni...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.06.015
更新日期：2007-09-30 00:00:00
abstract：:Diffusion-weighted MRI is the forerunner of the rapidly developed microstructure MRI (μMRI) aimed at in vivo evaluation of the cellular tissue architecture. This brief review focuses on the spatiotemporal scales of the microstructure that are accessible using different diffusion MRI techniques and the need to weight t...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/j.jneumeth.2020.108910
更新日期：2021-01-01 00:00:00
abstract：:Glass plates coated with transparent thin film conductors of indium-tin oxide (ITO), 100 nm thick and 10 microns wide, have been successfully used to record spike potentials from neuronal monolayer cultures. The material is non-toxic to mammalian spinal neurons and is stable under warm culture medium. Laser-deinsulate...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90105-0
更新日期：1985-11-01 00:00:00
abstract：BACKGROUND:Application of functional Near InfraRed Spectroscopy (fNIRS) in neurology is still limited as a good optical coupling and optimized optode coverage of specific brain regions remains challenging, notably for prolonged monitoring. METHODS:We propose to evaluate a new procedure allowing accurate investigation ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.08.006
更新日期：2018-11-01 00:00:00
abstract：:A method for the simultaneous visualization of neurotransmitter receptor binding sites and immunohistochemically characterized cells is described using in vitro sections of rat striatum. The striatum provides a rich neurochemical environment in which to examine muscarinic acetylcholine receptor relations to peptide-re...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90061-5
更新日期：1985-10-01 00:00:00
abstract：:We present a numerical method which provides the ability to analyze digitized microscope images of retinal explants and quantify neurite outgrowth. Few parameters are required as input and limited user interaction is necessary to process an entire experiment of images. This eliminates fatigue related errors and user-r...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(03)00017-7
更新日期：2003-04-15 00:00:00
abstract：:A video-based 2D eye-tracking system (EyeLink version 2.04, SR Research Ltd/SMI) was compared with the scleral search coil technique for its performance on recording the properties of fixations and saccadic eye movements. Fixation positions and saccadic properties (amplitude, duration, and peak velocity) were calculat...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(01)00527-1
更新日期：2002-03-15 00:00:00
abstract：:Atomic force microscopy (AFM) provides the possibility to map the 3D structure of viewed objects with a nanometric resolution, which cannot be achieved with other imaging methods such as conventional video imaging and confocal fluorescent microscopy. Video imaging with CCD cameras can provide an analysis of biological...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.09.034
更新日期：2009-02-15 00:00:00
abstract：:The use of paper impregnated with Bromphenol blue for recording normal rat footprints is described. Because paper provides a better grip than X-ray film for the paws of the rats, the resulting tracks make manual scoring easier and more accurate. In addition, the cost of this technique is considerably lower. ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(88)90173-2
更新日期：1988-07-01 00:00:00
abstract：:Cobalamin (Cbl) utilization as a cofactor for methionine synthase and methylmalonyl-CoA mutase is dependent on the transport of Cbl through lysosomes and its subsequent delivery to the cytosol and mitochondria. We speculated that neuropathological conditions that impair lysosomal function (e.g., age-related lipofuscin...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.04.008
更新日期：2013-07-15 00:00:00
abstract：:A method is described for the production of an electrode capable of monitoring and modulating the input-output relationship of thalamic neurons. Tungsten-in-glass electrodes were manufactured with the ability to simultaneously record lateral geniculate nucleus action potentials and associated, retinally evoked S-poten...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90126-c
更新日期：1993-09-01 00:00:00
abstract：:The Barnes maze is a visuo-spatial learning and memory test originally designed for use with rats, and later adapted for use with mice. The Barnes maze design and test procedure vary across studies using mice, but the effects of variation in Barnes maze design and test procedure on learning and memory in mice have not...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.09.027
更新日期：2012-01-30 00:00:00
abstract：:Light emitting diodes (LEDs) are extensively used as light sources to investigate visual and visually related function and dysfunction. Here, we describe the design of a compact, low-cost, stand-alone LED-based system that enables the configuration, storage and presentation of elaborate visual stimulation paradigms. T...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.02.004
更新日期：2011-04-15 00:00:00
abstract：:Following bilateral injection of manganese (Mn) into the rat's motor cortex, electrical stimulation of the cortex is shown to increase the transport, uptake and accumulation of Mn in the corticospinal tract (CST), as assessed by manganese-enhanced magnetic resonance imaging (MEI). T(1)-weighted gradient echo images we...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.02.001
更新日期：2006-09-30 00:00:00
abstract：:Digital image analysis of quantitative autoradiographic (QAR) films is widely used in neuroscience applications. Unless proper precautions are taken when autoradiographic images are converted to digital form they can be inadvertently modified by improper application of the sampling process. This type of modification i...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(91)90156-t
更新日期：1991-06-01 00:00:00
abstract：:Hydraulically coupled volume microejection (HCVM) was employed to overcome known drawbacks of conventional pressure ejection of drugs in isolated brain slices and other tissues. For HCVM, a solution-filled glass micropipette is connected to a motor-driven, liquid-filled syringe by low-compliance, liquid-filled tubing,...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.01.007
更新日期：2006-09-15 00:00:00
abstract：BACKGROUND:(1)H magnetic resonance spectroscopy (MRS) has documented an increased Cho/Cr ratio in the dorsolateral prefrontal cortex (DLPFC) in major depressive disorder (MDD). The aim of this study was to investigate neurochemical alterations in the left DLPFC, considered a main area of pathogenesis in depression, usi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.05.022
更新日期：2007-09-15 00:00:00
abstract：:Display systems based on conventional computer graphics cards are capable of generating images with about 8-bit luminance resolution. However, most vision experiments require more than 12 bits of luminance resolution. Pelli and Zhang [Spatial Vis. 10 (1997) 443] described a video attenuator for generating high luminan...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(03)00174-2
更新日期：2003-11-30 00:00:00
abstract：:A new method to study the reactions to unexpected mechanical perturbations during human walking on a treadmill is presented. Perturbations consisted of an obstruction of the forward swinging foot during the early swing phase. These were caused by obstacles which were dropped on the treadmill in front of the subject. T...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(95)00149-2
更新日期：1996-07-01 00:00:00
abstract：:A simple method is described for achieving a salt bridge within a patch pipette. The tip of the pipette is filled with a Cl(-)-free solution that bathes the membrane patch. Above this is a Cl(-)-containing solution that surrounds the recording Ag/AgCl wire electrode. Addition of 0.07% (w/v) agarose to the solution in ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90136-f
更新日期：1993-01-01 00:00:00
abstract：BACKGROUND:Tinnitus, head and ear noise, is due to maladaptive plastic changes in auditory and associated neural networks. Tinnitus has been traditionally managed through the use of sound to passively mask or facilitate habituation to tinnitus, a process that may take 6-12 months. NEW METHOD:A game-based perceptual tr...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.04.002
更新日期：2015-07-15 00:00:00
abstract：:A new video path analyzer, described herein, monitors travel distance, rearing, stereotypic movement, rotation, and speed of rats simultaneously. The video path analyzer was equipped with a cage (black background, 50 cm long x 50 cm wide x 50 cm high), camera, television screen, computer, and printer. A detailed descr...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/S0165-0270(96)00101-X
更新日期：1996-12-01 00:00:00
abstract：:Several neuronal tracing substances were applied to the cut ends of leech cephalic nerves and the resulting backfills into the subesophageal ganglion (sbEG) were mapped. A 12 h incubation in 3 kDa dextrans conjugated either to a fluorochrome or to biotin (subsequently tagged with peroxidase) was satisfactory. In separ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：
更新日期：1996-08-01 00:00:00
abstract：:The ability to detect and sort overlapping spike waveforms in extracellular recordings is key to studies of neural coding at high spatial and temporal resolution. Most spike-sorting algorithms are based on initial spike detection (e.g. by a voltage threshold) and subsequent waveform classification. Much effort has bee...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.06.011
更新日期：2008-09-15 00:00:00
abstract：:Behavioral recovery is the major goal of neuroscience research on the peripheral nervous system. However, behavioral methods of assessing peripheral nerve regeneration are still lacking. In the present work we used the median nerve and finger flexors as the experimental model. After resection or crush injury of the me...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)00169-h
更新日期：1995-05-01 00:00:00
