Abstract：
:We describe a much simplified high-performance liquid chromatography (HPLC) method for the measurement of caffeine in plasma and brain. A particularly attractive feature of this method is that a simple methanol/water (60:40) mobile phase can be used both for plasma and brain samples. In addition, the method is compatible with solid-phase extraction for plasma samples and conventional brain tissue preparation for biogenic amine analysis with HPLC. Using this method to measure the concentrations of caffeine in plasma and brain of rats which received 10 or 50 mg/kg caffeine injections, we found substantial concentration differences between cortical and subcortical brain tissue. Specifically, at the 10 mg/kg dose, a nearly 2-fold difference between cortex and striatum caffeine concentrations was observed. A shortcoming of many neurobehavioral studies of caffeine effects is the absence of caffeine concentration measurements. The simplicity of the present method for the measurement of caffeine in plasma and brain tissue makes it a practical and feasible procedure to incorporate into neurobehavioral studies designed to elucidate the CNS actions of caffeine.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Carey RJ,DePalma Gdoi
10.1016/0165-0270(94)90139-2subject
Has Abstractpub_date
1994-07-01 00:00:00pages
19-22issue
1eissn
0165-0270issn
1872-678Xpii
0165-0270(94)90139-2journal_volume
53pub_type
杂志文章abstract：:Presented in this short communication are design principles for the construction of a positioning apparatus for biological specimens in magnetically sensitive environments. An apparatus with 3 degrees of freedom was built and found to provide position accuracy to within +/- 0.25 mm throughout a cubic volume measuring ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(92)90112-q
更新日期：1992-08-01 00:00:00
abstract：:The effect of acute ethanol on adenosine content in four motor areas of the male Sprague-Dawley rat brain was investigated using HPLC-fluorescence detection. Since basal adenosine levels are difficult to assess due to extremely rapid turnover of adenosine, four different methods of sacrifice were also evaluated for ad...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(88)90139-2
更新日期：1988-10-01 00:00:00
abstract：BACKGROUND:Events that instigate disease may involve biochemical events distinct from changes in the steady-state levels of proteins. Even chronic degenerative disorders appear to involve changes such as post-translational modifications. NEW METHOD:We have begun a series of proteomics analyses on proteins that have be...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.11.005
更新日期：2019-05-01 00:00:00
abstract：BACKGROUND:To increase power when analyzing fMRI data, researchers often define functional regions of interest (fROIs). It is crucial that this fROI is defined with an optimal balance between both false positives and false negatives to ensure maximal spatial accuracy and to avoid potentially biased results in the main ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108417
更新日期：2020-01-15 00:00:00
abstract：:The most common behavioural disorder seen in children and adolescents born extremely prematurely is attention deficit hyperactivity disorder (ADHD). The hyperactive/impulsive sub-type of ADHD or the inattentive sub-type or the hyperactive/impulsive/inattentive sub-type can be evident. These sub-types of ADHD can persi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.01.010
更新日期：2007-11-30 00:00:00
abstract：:Information concerning the location and distribution of presynaptic neurotransmitter release sites within anatomically labeled axons would be of value for a large number of studies in functional anatomy, development, and plasticity. Here we report a method for localizing presynaptic sites within identified arbors of i...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(99)00145-4
更新日期：2000-01-15 00:00:00
abstract：:Analysis of the antigenic components of synaptic membranes presents several problems caused by detergents required to solubilize the proteins. These problems involve detection of the reaction between antibodies and proteins in the detergent extract as well as characterization of the individual antigens after further p...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(80)90058-8
更新日期：1980-04-01 00:00:00
abstract：:Research into therapeutics for neuropsychiatric disorders is increasingly focusing on drugs with new mechanisms of action, and such agents are often assessed in preclinical studies using nonhuman primates. However, researchers lack a standardised method to compare different drugs for common adverse effects on the nerv...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.02.004
更新日期：2013-04-30 00:00:00
abstract：:The present study describes the use of nose-poke habituation as a memory task and demonstrates that it is sensitive to hypo- and hypermnestic pharmacological treatments administered post-trial. Habituation of nose-poke behavior of rats was defined as a reduction in number of nose-pokes compared to baseline. It was mea...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)00143-5
更新日期：1995-03-01 00:00:00
abstract：BACKGROUND:For reasons of cost and ethical concerns, models of neurodegenerative disorders such as Huntington disease (HD) are currently being developed in farm animals, as an alternative to non-human primates. Developing reliable methods of testing cognitive function is essential to determining the usefulness of such ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.08.025
更新日期：2016-05-30 00:00:00
abstract：:We have built a high speed, sensitive camera system capable of capturing sequences of low-light level images synchronized with recordings of membrane potential. The camera system is based on a cooled, scientific grade CCD camera controlled by a PC/AT computer. It can take 100 frames/sec of 18 X 18 element images and 4...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(91)90051-z
更新日期：1991-02-01 00:00:00
abstract：BACKGROUND:In clinical practice, small myelinated sensory fibers, Aδ-fibers, conveying mainly pain and temperature sensations, cannot be examined with available nerve conduction study techniques. Currently, these fibers can only be examined with experimental or very specialized and not commonly available nerve conducti...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.109045
更新日期：2020-12-24 00:00:00
abstract：BACKGROUND:Cortico-Cortical Evoked Potentials (CCEPs) are a novel low frequency stimulation method used for brain mapping during intracranial epilepsy investigations. Only a handful of metrics have been applied to CCEP data to infer connectivity, and no comparison as to which is best has been performed. NEW METHOD:We ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108559
更新日期：2020-01-09 00:00:00
abstract：:This study examined the effect of two dissection techniques on the quality of human brain specimens. Frozen cerebellar samples were obtained from postmortem brains of 10 subjects free from neurological and psychiatric disease. These tissues were tested for RNA and DNA concentration and quality after being dissected wi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.12.027
更新日期：2009-04-30 00:00:00
abstract：BACKGROUND:The construction of multichannel micro-electrode arrays (MEA) generally requires complex and expensive procedures. Here we describe a simple, cheap, flexible method of linear MEA construction. NEW METHOD:Our method allows manufacture of linear MEA (cross section ∼ 375 × 250 μm with 12 electrodes) of any des...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.109011
更新日期：2021-01-15 00:00:00
abstract：:We present an efficient algorithm for solving the one-dimensional cable equation in the Laplace (frequency) domain for an arbitrary linear membrane. This method, a reformulation and extension of the geometrical calculus developed by Butz and Cowan (1974), solves for the transfer impedance between any two points in a b...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90015-9
更新日期：1985-02-01 00:00:00
abstract：:Promising therapeutic strategies for neurodegenerative diseases such as Parkinson's disease include replacement of lost striatal dopaminergic neurons by grafting of embryonic mesencephalic cells. However, the poor survival of the transplanted tissue still limits transplantation of these cells into the human brain in a...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.11.032
更新日期：2008-03-30 00:00:00
abstract：BACKGROUND:Saccades are rapid eye movements used to gather information about a scene which requires both action and perception. These are usually studied separately, so that how perception influences action is not well understood. In a dual task, where the subject looks at a target and reports a decision, subtle change...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2014.05.010
更新日期：2014-07-30 00:00:00
abstract：:The relationship between the levels of cytochrome oxidase and gamma-aminobutyric acid (GABA) was investigated within single neurons by double labeling the 2 markers in the same section. Double staining was equally effective when immunogold-silver staining of GABA was followed by indirect immunoperoxidase labeling of c...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(89)90129-5
更新日期：1989-12-01 00:00:00
abstract：:The present study describes a method for improving the precision and accuracy of clot placement within the middle cerebral artery (MCA) of rats, utilizing a micro-catheter and laser Doppler flowmetry. This technique reduces the size of clot needed to achieve stable occlusion with no failed embolizations and a low perc...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.12.026
更新日期：2006-06-30 00:00:00
abstract：:The effects of the microwave antigen-retrieval method were investigated for five antibodies commonly used in neurosciences, i.e., Parvalbumin, Calbindin D28-K, MAP-2, MAP-5 and SMI-32. Immunocytochemical stainings were performed on free-floating vibratome sections of tissue which had been stored in fixative for as lon...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)90208-9
更新日期：1994-12-01 00:00:00
abstract：:Research findings on human motor skills may not necessarily hold in everyday life, since laboratory and everyday scenarios typically differ with respect to the subjects' attention to the skill, their motivation to perform at their best, the goals they try to achieve, and the mode of movement initiation - extrinsic ver...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2010.08.005
更新日期：2010-10-30 00:00:00
abstract：:Cell transplantation therapy has raised a great interest in the perspective of its employment for nerve tissue repair. Among the various cell populations proposed, olfactory ensheathing glial cells have raised great interest over recent years, especially in the perspective of their employment for neural repair because...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.09.021
更新日期：2009-12-15 00:00:00
abstract：:Serial sectioning for 3-D reconstruction requires a highly skilled and experienced individual to collect ribbons of ultrathin sections on formvar-coated grids, and to handle the grids after section collection. A simple method is described for placing ribbons in an orderly serial fashion on formvar-coated grids, by a m...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(89)90057-5
更新日期：1989-11-01 00:00:00
abstract：:The increasing use of WGA-HRP as a neuroanatomical tracer has led us to examine two aspects of its uptake and transport. Microelectrophoretic deposits of WGA-HRP were centered in lamina A of the LGd to determine whether or not there is a discrepancy between the size of the deposit site and the effective uptake zone. F...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(84)90026-8
更新日期：1984-06-01 00:00:00
abstract：:Immunodetection techniques are dependent on enzyme-protein conjugates for the visualisation of antigen-antibody complexes. One of the most widely used is the avidin-biotin-peroxidase complex (ABC) method. The present study demonstrates that direct treatment of goldfish and salamander retinal sections with ABC, followe...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(97)00114-3
更新日期：1997-11-07 00:00:00
abstract：:The objective of the present work was to examine fronto-central spindle frequency. A previously validated spindle detector, providing an electroencephalographic (EEG) amplitude independent spindle detection, was used to detect bilateral sleep spindles from sleep EEG recordings of ten healthy subjects with a time resol...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.03.019
更新日期：2008-07-15 00:00:00
abstract：:The development of high-resolution retinal prostheses fabricated from silicon wafers presents an interesting problem: how to electrically bridge the space between the flat silicon wafer and the curved retinal surface. One potential "bridge" is a microwire glass electrode. In this paper we present our results in evalua...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.02.035
更新日期：2004-08-30 00:00:00
abstract：:Neuronal activity causes substantial Na+ transients in fine cellular processes such as dendrites and spines. The physiological consequences of such Na+ transients are still largely unknown. High-resolution Na+ imaging is pivotal to study these questions, and, up to now, two-photon imaging with the fluorescent Na+ indi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.01.009
更新日期：2006-09-15 00:00:00
abstract：:We have developed a novel, low-cost device designed to monitor and modulate locomotor activity in murine subjects. This technology has immediate application to the study of effects of physical exercise on various neurobiological endpoints, and will also likely be useful in the study of psychomotor sensitization and dr...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.10.020
更新日期：2013-01-30 00:00:00
