Abstract：
:The time course of dipeptidase activity and the effect of p-mercuribenzoate (PCMB) on the subestimation of the fluorometric determination of angiotensin-converting enzyme (ACE, EC 3.4.15.1) during development was studied. ACE and dipeptidase activities were measured fluorometrically in homogenates of the developing chick retina using Hip-His-Leu and His-Leu as substrates, respectively, both either in the presence or in the absence of 1 mM PCMB. ACE activity was inhibited by captopril (IC50 1.7 nM), MK 422 (IC50 4.8 nM), BPP9a (IC50 0.25 microM) and BPP5a (IC50 1.2 microM), thus suggesting that avian retinal ACE catalytically resembles the mammalian enzyme. Dipeptidase activity varied 3.4-fold throughout development, leading to a large and variable (28-83%) subestimation of ACE activity during chick retina ontogenesis. PCMB (1 mM) inhibited 67-94% dipeptidase activity during development, thus greatly reducing any subestimation of ACE activity determination during the development of the chick retina.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Nunes-Mamede ML,De Mello FG,Martins ARdoi
10.1016/0165-0270(90)90003-xsubject
Has Abstractpub_date
1990-01-01 00:00:00pages
7-11issue
1eissn
0165-0270issn
1872-678Xpii
0165-0270(90)90003-Xjournal_volume
31pub_type
杂志文章abstract：:A variety of materials has been applied to neuronal cell culture substrates to improve the efficiency of the culture and to provide pertinent cell growth environment. Here we report the application of Parafilm(®) M ('Parafilm') as a novel substrate for neuronal culture and patterning. Cell culture results show that el...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.10.023
更新日期：2012-02-15 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：BACKGROUND:Operant training systems make use of water or food restriction and make it necessary to weigh animals to ensure compliance with experimental endpoints. In other applications periodic weighing is necessary to assess drug side-effects, or as an endpoint in feeding experiments. Periodic weighing while essential...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.05.002
更新日期：2017-06-15 00:00:00
abstract：:Interactions among receptor neurons, glial cells and neurons intrinsic to the antennal lobe of the moth underlie the formation of olfactory glomeruli. To isolate these interactions, as well as to understand the effect of a variety of humoral agents on differentiation of the neurons and glia, we generate primary cultur...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/S0165-0270(96)00025-8
更新日期：1996-10-21 00:00:00
abstract：:We present an effective technique for culture and expansion of Schwann cells (SC) from adult peripheral nerves. Cultures from adult mouse sciatic nerves (one to six nerves per culture) in defined medium showed markedly higher purity and density of SC when the nerve was predegenerated in vivo for 7 days than when it wa...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(00)00221-1
更新日期：2000-06-30 00:00:00
abstract：BACKGROUND:Providing weight support facilitates locomotion in spinal cord injured animals. To control weight support, robotic systems have been developed for treadmill stepping and more recently for overground walking. NEW METHOD:We developed a novel device, the body weight supported ambulatory rodent trainer (i.e. BA...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.03.015
更新日期：2015-05-15 00:00:00
abstract：:Unlike certain other brain areas, notably the hippocampal formation, synaptic transmission in the cerebellum, a 3-dimensional anatomical structure, is no ideally studied in a 2-dimensional slice preparation. We describe a method for cutting a cerebellar slice that incorporates two planes of section: one sagittal (in t...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(95)00133-6
更新日期：1996-02-01 00:00:00
abstract：:Using the novel mathematical technique known as wavelet analysis, a new method (WSC) is presented to sort spikes according to a decomposition of neural signals in the time-frequency space. The WSC method is implemented by a pyramidal algorithm that acts upon neural signals as a bank of quadrature mirror filters. This ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(00)00250-8
更新日期：2000-09-15 00:00:00
abstract：:The biological and clinical relevance of axonal transport has driven the development of a variety of new approaches to its study, including the generation of fluorescence or brightfield movies of moving cargoes within axons. Kymograph analysis is a simple and effective tool used to analyze axonal transport in neurons....
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.05.013
更新日期：2011-08-15 00:00:00
abstract：:Synaptic connections between retinal cells were studied by recording simultaneously from pre- and postsynaptic cells in the retinal slice preparation. The time course and waveform of the pre- and postsynaptic light responses were monitored, and the postsynaptic voltage responses to presynaptic current injection were m...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(87)90046-x
更新日期：1987-06-01 00:00:00
abstract：:Epoxy-insulated tungsten microelectrodes can be used once or twice in our lab before the impedance becomes too low. Dipping the electrodes in epoxy followed by curing restores their initial high impedance which is associated with good isolation of single neurons. It is a cost effective and simple procedure. ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(02)00365-5
更新日期：2003-03-15 00:00:00
abstract：:Computerized control of a bar-press feeding task initiated by a monkey's vocalization was designed to study the motivational roles of brain regions in feeding behavior. In this paradigm, the monkey was required to vocalize in order to initiate the task and then press the bar 30 times to obtain the reward. A microcompu...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90076-7
更新日期：1985-05-01 00:00:00
abstract：:Ferrets have been extensively used to unravel the neural mechanisms of coding and processing of visual information, and also to identify the developmental mechanisms underlying the emergence of such a complex and fine-tuned neural system. In recent years numerous tools have been generated that allow studying neural sy...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.11.016
更新日期：2010-02-15 00:00:00
abstract：:This paper describes a new protocol that addresses the question of whether, in human experiments, modulatory effects of remote nociceptive conditioning stimuli on reflex responses are mediated by the stress induced by the conditioning stimuli. The protocol has been illustrated by a study into the effect of a remote no...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.01.002
更新日期：2005-06-30 00:00:00
abstract：:Using a specific rat monoclonal anti-idiotypic antibody we have examined the subcellular distribution of -opioid receptors in various neuronal subtypes of the rat spinal cord. The immunofluorescence was detected with a confocal microscope and in some cases serial images were processed for a three-dimensional (3-D) rec...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(98)00149-6
更新日期：1999-02-01 00:00:00
abstract：:Subunit B of cholera toxin was used as a tracer substance in the central nervous system after being injected into various brain regions, mainly somatosensory relay structures. The tracer was localized with an immunoperoxidase technique, using monoclonal antibodies raised in mouse hybridomas. This method, which is appl...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(88)90167-7
更新日期：1988-07-01 00:00:00
abstract：:Formaldehyde vapor levels were evaluated in a histological fixative laboratory and environments where anatomical pieces treated with this fixative are stored or handled. Formaldehyde concentration in the air may reach values up to 9 times higher than that established (0.3 ppm) by the international official surveillanc...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(96)00158-6
更新日期：1997-03-01 00:00:00
abstract：:We investigated the usefulness of YFP-H transgenic mice [Neuron 28 (2000) 41] which express yellow fluorescent protein (YFP) in a restricted subset of neurons to study Wallerian degeneration in the PNS. Quantification of YFP positive axons and myelin basic protein (MBP) immunocytochemistry revealed that YFP was random...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2003.10.016
更新日期：2004-03-15 00:00:00
abstract：:Exceptionally clear Golgi-Nissl sections of 300 micron thickness have been morphometrically studied by light microscopy using oil immersion objectives. The clarity results from a new variation of a staining procedure that combines Golgi and Nissl images in one section. A viewing technique has been developed that permi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(81)90045-5
更新日期：1981-08-01 00:00:00
abstract：:Previous neuroimaging studies of the cortical representation of gustatory and olfactory stimuli have often delivered tastants to the mouth in very small quantities or stimulated olfaction orthonasally. In studies of retro-nasal olfaction, swallowing was generally delayed to reduce head motion artefacts. The present fM...
journal_title：Journal of neuroscience methods
pub_type： 临床试验,杂志文章
doi：10.1016/j.jneumeth.2006.05.035
更新日期：2006-12-15 00:00:00
abstract：:Superpositioning of multiple 3-dimensional digital volumes is essential to extending neuroimaging capabilities from single-subject analysis to group evaluation. In this study, 6 rat heads were cryoplaned and digital images of the specimen blockface were organized into data volumes. The midline plane of each brain guid...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90007-e
更新日期：1993-11-01 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：:A light microscopical, non-fluorescent, retrograde double-labeling technique is described. Cholera toxin B-subunit (CTb) and a conjugate of wheatgerm agglutinin and bovine serum albumin coupled to 10 nm gold particles (gold-lectin) are both excellent retrograde tracers and, when visualized by means of immunohistochemi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)00034-e
更新日期：1995-09-01 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：BACKGROUND:The assessment of directed functional connectivity from neuronal data is increasingly common in neuroscience by applying measures based in the Granger causality (GC) framework. Although initially these consisted in simple analyses based on directionality strengths, current methods aim to discriminate causal ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.02.013
更新日期：2015-04-30 00:00:00
abstract：:Experimental animal epilepsy research got a big boost since the discovery that daily mild and short (seconds) tetanic stimulations in selected brain regions led to seizures with increasing duration and severity. This model that was developed by Goddard (1967) became known as the kindling model for epileptogenesis and ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/j.jneumeth.2015.03.025
更新日期：2016-02-15 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 technique, "serial block face scanning electron microscopy" (SBFSEM), allows for automatic sectioning and imaging of biological tissue with a scanning electron microscope. Image stacks generated with this technology have a resolution sufficient to distinguish different cellular compartments, including synaptic s...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.07.021
更新日期：2008-01-30 00:00:00
abstract：:Griffanti et al. (2017) provide a rich set of expert-consensus guidelines for how to label components derived from ICA as either belonging to signal of interest or noise to be filtered from fMRI data. These general hypotheses concerning procedures for "hand" classification of components are a good starting point that ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.07.007
更新日期：2017-10-01 00:00:00
abstract：:Cerebrocortical neurons that store and release zinc synaptically are widely recognized as critical in maintenance of cortical excitability and in certain forms of brain injury and disease. Through the last 20 years, this synaptic release has been observed directly or indirectly and reported in more than a score of pub...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.11.014
更新日期：2006-06-30 00:00:00
