Abstract：
BACKGROUND:MRI-histology correlation studies of the ex vivo brain mostly employ fresh, extracted (ex situ) specimens, aldehyde fixed by immersion, which has several disadvantages for MRI scanning (e.g. deformation of the organ). A minority of studies are done ex vivo-in situ (unfixed brain), requiring an MRI scanner readily available within a few hours of the time of death. NEW METHOD:We propose a new technique, exploited by anatomists, for scanning the ex vivo brain: fixation by whole body perfusion, which implies fixation of the brain in situ. This allows scanning the brain surrounded by fluids, meninges, and skull, preserving the structural relationships of the brain in vivo. To evaluate the proposed method, five heads perfused-fixed with a saturated sodium chloride solution were employed. Three sequences were acquired on a 1.5 T MRI scanner: T1weighted, T2weighted-FLAIR, and Gradient-echo. Histology analysis included immunofluorescence for myelin basic protein and neuronal nuclei. RESULTS:All MRIs were successfully processed through a validated pipeline used with in vivo MRIs. All cases exhibited positive antigenicity for myelin and neuronal nuclei. COMPARISON WITH EXISTING METHODS:All scans registered to a standard neuroanatomical template in pseudo-Talairach space more accurately than an ex vivo-ex situ scan. The time interval to scan the ex vivo brain in situ was increased to at least 10 months. CONCLUSIONS:MRI and histology study of the ex vivo-in situ brain fixed by perfusion is an alternative approach that has important procedural and practical advantages over the two standard methods to study the ex vivo brain.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Maranzano J,Dadar M,Bertrand-Grenier A,Frigon EM,Pellerin J,Plante S,Duchesne S,Tardif CL,Boire D,Bronchti Gdoi
10.1016/j.jneumeth.2020.108903subject
Has Abstractpub_date
2020-11-01 00:00:00pages
108903eissn
0165-0270issn
1872-678Xpii
S0165-0270(20)30326-5journal_volume
345pub_type
杂志文章abstract：:Both extracellular and intracellular stimulation of single motoneurons were shown to be similarly effective and consistent in eliciting contractile responses in single lateral rectus muscle motor units. The whole muscle was activated by stimulating the sixth nerve in the brain stem. Both whole muscle and motor unit co...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(97)00141-6
更新日期：1997-12-30 00:00:00
abstract：:The social interaction test in rats provides a method for detecting anxiolytic activity that does not use food or water deprivation, or electric shock, and therefore obviates difficulties of interpretation that might arise from drug-induced changes in motivation. Since social interaction is measured under more than on...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(80)90012-6
更新日期：1980-06-01 00:00:00
abstract：:Intra-cranial electroencephalographic recordings are increasingly employed in mice because of the availability of genetically manipulated mouse models. Currently, dental acrylic and anchoring screws are used to cement implanted electrodes. This technique works well for adult animals but often encounters difficulty whe...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.03.001
更新日期：2008-06-15 00:00:00
abstract：:Corticomuscular coherence (CMC) estimation is a frequency domain method used to detect a linear coupling between rhythmic activity recorded from sensorimotor cortex (EEG or MEG) and the electromyogram (EMG) of active muscles. In motor neuroscience, rectification of the surface EMG is a common pre-processing step prior...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.11.001
更新日期：2012-03-30 00:00:00
abstract：:A microfluidic chip for culturing neurons and spatially isolating axons from somas is presented for use with visually guided whole-cell electrophysiological measurements. A modular design consisting of detachable and re-sealable layers is used to satisfy the requirements of both long-term neuron culturing as well as e...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.10.013
更新日期：2013-01-30 00:00:00
abstract：:In rats with unilateral 6-hydroxydopamine lesions of the substantia nigra apomorphine reliably induces a response of contralateral rotation. The present study shows that this response can readily be conditioned to a test environment which the rats are briefly exposed to during the onset of the apomorphine-induced rota...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(88)90046-5
更新日期：1988-01-01 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：:In order to identify novel genes involved in appetite and body weight regulation we have developed a microarray based method suitable for detecting small changes in gene expression in discrete groups of hypothalamic neurons. The method is based on a combination of stereological sampling, laser capture microdissection ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.09.024
更新日期：2009-02-15 00:00:00
abstract：:We have attempted to demonstrate the technical requirements and performance of a microscopical assay using a densitometric application of image analysis to measure immunohistochemical stain intensity. Not surprisingly, the techniques required were more demanding than those used for the quantification of field and obje...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(92)90048-i
更新日期：1992-10-01 00:00:00
abstract：BACKGROUND:Stereotaxic procedures in rats are frequently used in neurological research. The commonly used rat brain stereotaxic atlases areThe Rat Brain in Stereotaxic Coordinates, the second most cited book in science, and Stereotaxic Atlas of Rat Brain (in Chinese) which based on Wistar rats of 290 g and SD rats of 2...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.06.026
更新日期：2018-09-01 00:00:00
abstract：BACKGROUND:Electroencephalogram (EEG) signals are often corrupted with unintended artifacts which need to be removed for extracting meaningful clinical information from them. Typically a priori knowledge of the nature of the artifacts is needed for such purpose. Artifact contamination of EEG is even more prominent for ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2016.04.006
更新日期：2016-07-15 00:00:00
abstract：BACKGROUND:Intracranial electrical recordings (iEEG) and brain stimulation (iEBS) are invaluable human neuroscience methodologies. However, the value of such data is often unrealized as many laboratories lack tools for localizing electrodes relative to anatomy. To remedy this, we have developed a MATLAB toolbox for int...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.01.022
更新日期：2017-04-01 00:00:00
abstract：BACKGROUND:Recent advances in genetically engineered calcium and membrane potential indicators provide the potential to estimate the activation dynamics of individual neurons within larger, mesoscale networks (100s-1000+neurons). However, a fully integrated automated workflow for the analysis and visualization of neura...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.01.020
更新日期：2015-03-30 00:00:00
abstract：BACKGROUND:Cytokines are key signaling molecules within the immune system that regulate a host's response to pathogens and neuronal damage. Aberrant cytokine signaling has been implicated in many neurological diseases. Therefore, accurately measuring cytokine concentrations within the brain is crucial. NEW METHOD:This...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.108601
更新日期：2020-01-22 00:00:00
abstract：:Recombinant proteins are routinely expressed in heterologous expression systems such as human embryonic kidney 293 (HEK 293) cells. The efficiency of the expression is critical when the expressed protein must be characterized at the single-cell level. Here we describe a simple method by which the protein expression ef...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.09.009
更新日期：2005-03-15 00:00:00
abstract：:We report an original method for implanting bone marrow stem cells within the spinal cord parenchyma. This method was used for the experimental treatment of patients diagnosed with amyotrophic lateral sclerosis. The methodology is reproducible and devoid of major complications even in patients showing significant spin...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2010.06.014
更新日期：2010-08-30 00:00:00
abstract：:The assumptions upon which a correct interpretation of the t-test depends are rarely fulfilled by data from the neurosciences. This applies to both independent and correlated samples. The Mann-Whitney U-test is suggested as an alternative for the t-test for independent samples. The way in which significant results fro...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/0165-0270(83)90058-4
更新日期：1983-12-01 00:00:00
abstract：BACKGROUND:This manuscript describes a new, multidimensional and data-driven approach to identify outlying datapoints from a first-level fMRI dataset. NEW METHOD:Using three different indicators of data corruption (the fast variance component of DVARS [Δ%D-var], scan-to-scan total displacement [STS], and each scan's o...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.02.008
更新日期：2019-04-15 00:00:00
abstract：BACKGROUND:Demyelination is the end product of numerous pathological processes, and also is one of the main causes of neurological disability in Multiple sclerosis (MS). Research into the pathogenesis of MS is hampered by the conventional rodent models' inability to produce stable demyelination. NEW METHOD:Focal demye...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.05.024
更新日期：2018-09-01 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：:In the method of in situ hybridization autoradiography, quantitative comparisons among multiple mRNA signals have proven difficult for many reasons, attributable both to technical factors (e.g. different probe specific activities) as well as to large differences in the patterns and levels of expression of different ge...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(99)00015-1
更新日期：1999-04-01 00:00:00
abstract：:Microdialysis coupled to liquid chromatography (LC) has proven to be a valuable in vivo sampling technique for studying neurotransmitter changes in normal and ischaemic brain. However, few analytical methods have described the simultaneous determination of amino acids, relevant in stroke research, together with the ni...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.10.013
更新日期：2005-05-15 00:00:00
abstract：:The last decade has seen a surge in the study of nonlinear dynamical behavior in physiologic systems. In this paper, some of the computational techniques most commonly used to investigate the nonlinear dynamics of these systems are described. Applications to eye movement analysis are included, including the validation...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/s0165-0270(98)00062-4
更新日期：1998-08-31 00:00:00
abstract：:An important factor in reducing variability in mouse test outcomes has been to develop assays that can be used for continuous automated home cage assessment. Our experience has shown that this has been most evidenced in long-term assessment of wheel-running activity in mice. Historically, wheel-running in mice and oth...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.04.014
更新日期：2018-04-15 00:00:00
abstract：:Inefficiency in primary neural stem cell transfection is a major obstacle in gene expression research aimed at determining the mechanisms underlying brain development. Following our initial finding that liposome-mediated transfection procedures are fairly toxic to neural stem cells, we further examined whether transfe...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(02)00090-0
更新日期：2002-06-30 00:00:00
abstract：BACKGROUND:Glucose hypermetabolism in denervated skeletal muscle suggests the potential for developing a diagnostic tool for peripheral nerve injuries. Herein, we investigated the characteristics and molecular mechanism of this phenomenon. NEW METHOD:Temporal course of glucose hypermetabolism and development of abnorm...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.01.014
更新日期：2019-04-01 00:00:00
abstract：BACKGROUND:Zebrafish (Danio rerio) are growing in popularity as a vertebrate model organism for the study of spinal neurocircuitry and locomotion. While many studies have used the zebrafish model system for electrophysiological analyses in embryonic and larval stages, there is a growing interest in studying spinal circ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.04.011
更新日期：2019-07-01 00:00:00
abstract：BACKGROUND:Sholl analysis has been used to analyze neuronal morphometry and dendritic branching and complexity for many years. While the process has become semi-automated in recent years, existing software packages are still dependent on user tracing and hence are subject to observer bias, variability, and increased us...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108529
更新日期：2020-02-01 00:00:00
abstract：:Two-photon laser scan microscopy carries many advantages for work on brain slices and bulk tissue. However, it has very low signal levels compared to conventional fluorescence microscopy. This is disadvantageous in fast imaging applications when photon shot noise is limiting. Working on brain slices with excitation po...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(99)00103-x
更新日期：1999-10-15 00:00:00
abstract：:A discontinuous gradient of Percoll has been used to prepare a subcellular fraction (fraction III) from fish brain which is greatly enriched in synaptic nerve endings (synaptosomes). Synaptosomes display well-preserved morphology, good functional performance as assessed by ability to release preloaded neurotransmitter...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(96)00137-9
更新日期：1997-02-01 00:00:00
