Abstract：
:There is increasing evidence that oxidative stress plays an important role in the pathogenesis of many neurodegenerative diseases including Parkinson's disease (PD). In particular there is support for the participation of oxidized catecholamines in PD. Catecholamines are highly reactive and are readily oxidized to aminochromes. While aminochromes have been shown to be toxic, their formation in oxidative stress and subsequent participation in disease has yet to be confirmed. We propose that the characterization of aminochromes, specifically dopaminochrome, is important in clarifying the role that oxidized catecholamines play in PD. We have developed a novel method for the separation and quantification of aminochromes using high-pressure liquid chromatography with electrochemical detection (HPLC-ED). Our method utilizes the separation principles employed in measuring catecholamines by HPLC except that the electrochemical detection of aminochromes is achieved by reversing the detector's electrode. We have used this method to separate and quantify aminochrome standards, prepared by oxidizing catecholamines with sodium periodate (NaIO(4)) and we have also shown that aminochromes can be measured in plasma and cell lysates. Furthermore, we have characterized aminochromes to facilitate forthcoming studies on aminochromes and the role oxidized catecholamines may play in neurodegenerative disease.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Ochs SD,Westfall TC,Macarthur Hdoi
10.1016/j.jneumeth.2004.08.010subject
Has Abstractpub_date
2005-03-30 00:00:00pages
201-8issue
2eissn
0165-0270issn
1872-678Xpii
S0165-0270(04)00308-5journal_volume
142pub_type
杂志文章abstract：:A technique has been developed for recording single unit afferent activity from mesenteric nerves in isolated segments of rat distal ileum in vitro. The preparation consists of a 3-cm segment of ileum, containing a single neurovascular bundle, held horizontally in an organ bath. One end of the segment is attached to a...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(86)90047-6
更新日期：1986-04-01 00:00:00
abstract：BACKGROUND:Photothrombosis is a minimally invasive method for induction of cortical ischemia. However, different ways of applying some methods to assess photothrombosis-induced damage need to be developed. NEW METHODS:We applied the tongue protrusion test and H&E staining of brain sections to detect ischemic damage af...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108457
更新日期：2020-01-01 00:00:00
abstract：:The EPC-9 patch-clamp amplifier is a digitally controlled analog device for recording currents in membrane patches and in small cells. It has neither front-panel controls nor internal trim adjustments; instead all gain, range-changing, transient cancellation, calibration and other functions are computer controlled. No...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
abstract：:An encephalomyosynangiosis (EMS) is a temporal muscle graft that is placed onto the surface of the brain to serve as a source for collateral vessel growth for brain revascularization in patients with Moyamoya Disease (MMD). To facilitate an EMS in patients with occlusive cerebrovascular diseases other than MMD, the tr...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.07.011
更新日期：2011-09-30 00:00:00
abstract：:The technique named detrended fluctuation analysis (DFA) has been used to reveal the presence of long-range temporal correlations (LRTC) and scaling behavior (SB) in electroencephalographic (EEG) recordings. The occurrence of these phenomena seems to be a salient characteristic of the healthy human brain and alteratio...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.01.010
更新日期：2008-05-30 00:00:00
abstract：:Vertex analysis defines dichotomous networks in terms of the relative frequencies of pendant (Vp) and nodal (Vd) vertices. Va, Vb and Vc comprise the 3 classes of Vd which connect 2, 1 and 0 Vp respectively. The vertex ratio (VR) of Va/Vb may be used to define topology since Va and Vc approach equality in large networ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(86)90118-4
更新日期：1986-10-01 00:00:00
abstract：:A current source for neural stimulation is presented which converts arbitrary voltage signals to current-controlled signals while regulating the offset-voltage across the stimulation electrodes in order to keep the electrodes in an electrochemical state that allows for injecting a maximum charge. The offset-voltage ca...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.03.016
更新日期：2008-06-30 00:00:00
abstract：:An increasing number of neuroscience experiments are using virtual reality to provide a more immersive and less artificial experimental environment. This is particularly useful to navigation and three-dimensional scene perception experiments. Such experiments require accurate real-time tracking of the observer's head ...
journal_title：Journal of neuroscience methods
pub_type： 临床试验,杂志文章
doi：10.1016/j.jneumeth.2005.12.013
更新日期：2006-06-30 00:00:00
abstract：BACKGROUND:Delivering solutes to a particular region of the brain is currently achieved by iontophoresis for very small volumes and by diffusion from a microdialysis probe for larger volumes. There is a need to deliver solutes to particular areas with more control than is possible with existing methods. NEW METHOD:Ele...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.10.005
更新日期：2019-01-01 00:00:00
abstract：:Some basic methodological issues concerning the use of the fluorescent tracers Fast blue (FB) and Diamidino yellow (DY) were studied using the projections of the red nucleus to the nucleus interpositus anterior (NIA) of the cerebellum of the cat. On standard Nissl-stained sections, it was possible to delineate 4 disti...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(87)90100-2
更新日期：1987-09-01 00:00:00
abstract：:Accurate estimates of the total number of neurons located in the wall of the gut are essential for studies of the enteric nervous system (ENS). Though several stains and antibodies are used routinely as pan-neuronal markers, controversies of relative sensitivity and completeness have been difficult to resolve, at leas...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2003.10.004
更新日期：2004-02-15 00:00:00
abstract：:Experiments based on neuronal cell-transistor couplings were made from some groups during the last years. Pioneering work in this field was carried out by Fromherz and his group (Fromherz, 2003; Schmidtner and Fromherz, 2006). We were interested of the interaction of nerve cells to serine hydrolase inhibitor diisoprop...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.02.018
更新日期：2012-01-01 00:00:00
abstract：:The silanization of glass, particularly Pyrex, was studied using reaction conditions that might be applied in the fabrication of ion-sensitive microelectrodes of the liquid-membrane type. The efficacy was tested by measuring the hydrophobicity (contact angle) or electrical resistivity of the treated surface. Aminosila...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(83)90037-7
更新日期：1983-07-01 00:00:00
abstract：:Mutant protein aggregates are an important biomarker in Huntington's and other neurodegenerative diseases however their quantification has typically relied on manual imaging and counting, or cell-free assays, which do not allow for concurrent analysis of cell viability. Here we describe four automated high throughput ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.02.007
更新日期：2008-06-15 00:00:00
abstract：:We investigated whether conscious rats exhibit hyperalgesia to noxious mechanical stimuli during tail reperfusion following transient tail ischaemia. Mechanical stimuli were delivered by three mechanical algometers, differing in contact area, geometry and rate of application. Tail ischaemia was induced by applying a p...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(00)00313-7
更新日期：2000-11-30 00:00:00
abstract：BACKGROUND:Transcranial magnetic stimulation (TMS) can evaluate cortical excitability and integrity of motor pathways via TMS-induced responses. The responses are affected by the orientation of the stimulated neurons with respect to the direction of the TMS-induced electric field. Therefore, besides being a functional ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.08.028
更新日期：2015-12-30 00:00:00
abstract：:The concentration of free calcium within the lumen of the endoplasmic reticulum ([Ca2+]L) fluctuates between 100 and 1000 microM. High [Ca2+]L provides an electro-driving force for Ca2+ release and supports high Ca2+ diffusion rate within the endoplasmic reticulum lumen. Fluctuations in [Ca2+]L also regulate numerous ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/s0165-0270(02)00300-x
更新日期：2002-12-31 00:00:00
abstract：:Intracranial self-stimulation (ICSS) in the rat is a useful tool for studying the importance of various brain monoamines in positive reinforcement. The effects of compounds interacting with dopaminergic neurotransmission is measurable by studying the changes of reward thresholds. By computerisation of the analysis of ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90084-5
更新日期：1993-05-01 00:00:00
abstract：:We address three problems concerning the quantitative analysis of nerve cell distribution in the cerebral cortex: (i) preparatory tissue deformation (shrinkage); (ii) difficulties in differentiating between small neurons and astroglia; and (iii) the bias introduced by the counting method. We found that staining with R...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(96)00119-7
更新日期：1996-12-28 00:00:00
abstract：:We report on the modulation of respiratory sinus arrhythmia in rats with central pattern generator (CPG) hardware made of silicon neurons. The neurons are made to compete through mutually inhibitory synapses to provide timed electrical oscillations that stimulate the peripheral end of vagus nerve at specific points of...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.09.024
更新日期：2013-01-15 00:00:00
abstract：:An understanding of how the brain processes information requires knowledge of its underlying wiring diagrams, as well as insights into the relationship between circuit architecture and physiological function. Notably, rabies virus based single-cell genetic manipulations that can facilitate an experimental link between...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/j.jneumeth.2019.108365
更新日期：2019-09-01 00:00:00
abstract：:There are many reasons why novel therapeutics fail in clinical trials but these failures are often attributed to lacking quality of preclinical data. These problems are not limited to any specific therapeutic area, academic or industrial research and are due in large part to several generic factors influencing researc...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.10.018
更新日期：2018-04-15 00:00:00
abstract：:Depression is characterized by a lack of "motivation" rather than a lack of "physical space" to move around. This study was designed to evaluate predictivity of an open space swimming test for antidepressant activity of various antidepressants in rats. Without drug treatment, rats showed a significant reduction in the...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(03)00068-2
更新日期：2003-06-15 00:00:00
abstract：:Currently there is no reliable retrograde tracing technique for visualization of dendritic morphologies of projection neurons. Here we describe a simple and efficient method that can be used to label neurons in Golgi-like fashion. The approach relies on activity-dependent uptake of tracer. For this purpose we inject t...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90055-v
更新日期：1993-10-01 00:00:00
abstract：:A technique for the preparation and recording of mammalian supraoptic nucleus neurosecretory neurons maintained in vitro through perfusion of the anterior cerebral artery is described. A slice of basal diencephalon measuring approximately 8 X 8 X 2 mm that includes the pituitary stalk and medial preoptic-anterior peri...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(83)90002-x
更新日期：1983-03-01 00:00:00
abstract：:The advantages of utilizing a microprocessor design kit as a central element in custom laboratory instrumentation are demonstrated in the design of a real-time, multiple point, tissue displacement monitor. The tissue sample to be monitored is submerged in a saline bath, through which perpendicular electric fields are ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(84)90066-9
更新日期：1984-02-01 00:00:00
abstract：:We describe a family of 6 computer programs that measure, analyse and create graphic displays of complex motor patterns. The programs create lists of times at which successive bursts of impulses in different nerves started and stopped, and use these lists to calculate the periods and durations of these bursts and to c...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(87)90020-3
更新日期：1987-01-01 00:00:00
abstract：:Stress has long been known to affect grooming in rodent species, altering both its activity measures and behavioural microstructure. Since stress disturbs a general pattern of self-grooming uninterrupted cephalocaudal progression, the grooming analysis algorithm (Kalueff and Tuohimaa, Brain Res. Protocols, 2004; 15: 1...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.10.001
更新日期：2005-04-30 00:00:00
abstract：:The electrochemical technique of differential pulse voltammetry (DPV) with micro-biosensors has been used for a number of years to monitor in vivo and in situ changes in the extracellular concentration of cerebral ascorbic acid, as well as that of the metabolites of dopamine (DA) and serotonin (5-HT). We have recently...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(92)90094-t
更新日期：1992-05-01 00:00:00
abstract：:We characterised the dynamics in the oscillatory potentials (OPs) of the rat electroretinogram (ERG) using a continuous complex Morlet wavelet transform. Dark-adapted (>12h) full field ERG responses were recorded from five anaesthetized (ketamine:xylazine, 60:5mg/kg) adult Long-Evans rats (10-12weeks). Five responses ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.12.007
更新日期：2008-03-30 00:00:00
