Abstract：
:Development of outcome measures to assess ongoing nerve regeneration in the living animal that can be translated to human can provide extremely useful tools for monitoring the effects of therapeutic interventions to promote nerve regeneration. Diffusion tensor imaging (DTI), a magnetic resonance based technique, provides image contrast for nerve tracts and can be applied serially on the same subject with potential to monitor nerve fiber content. In this study, we examined the use of ex vivo high-resolution DTI for imaging intact and regenerating peripheral nerves in mice and correlated the MRI findings with electrophysiology and histology. DTI was done on sciatic nerves with crush, without crush, and after complete transection in different mouse strains. DTI measures, including fractional anisotropy (FA), parallel diffusivity, and perpendicular diffusivity were acquired and compared in segments of uninjured and crushed/transected nerves and correlated with morphometry. A comparison of axon regeneration after sciatic nerve crush showed a comparable pattern of regeneration in different mice strains. FA values were significantly lower in completely denervated nerve segments compared to uninjured sciatic nerve and this signal was restored toward normal in regenerating nerve segments (crushed nerves). Histology data indicate that the FA values and the parallel diffusivity showed a positive correlation with the total number of regenerating axons. These studies suggest that DTI is a sensitive measure of axon regeneration in mouse models and provide basis for further development of imaging technology for application to living animals and humans.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Lehmann HC,Zhang J,Mori S,Sheikh KAdoi
10.1016/j.expneurol.2009.10.012subject
Has Abstractpub_date
2010-05-01 00:00:00pages
238-44issue
1eissn
0014-4886issn
1090-2430pii
S0014-4886(09)00429-4journal_volume
223pub_type
杂志文章abstract：:Effects of accumulation of phosphocreatine (P-creatine) on utilization and restoration of high-energy phosphates during anoxia and recovery were studied using thin hippocampal slices from the guinea pig. Incubation of slices with creatine (5 to 30 mM) increased the content of tissue P-creatine, in a linear fashion, an...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/0014-4886(83)90256-x
更新日期：1983-10-01 00:00:00
abstract：:Thalamocortical spike-and-wave discharges characterize the nonconvulsive absence seizures that occur spontaneously in genetic absence epilepsy rats from Strasbourg (GAERS), a selected strain of Wistar rats. GABA is crucial in the generation of absence seizures. The susceptibility to convulsions induced by threshold do...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1999.7302
更新日期：2000-02-01 00:00:00
abstract：:Theoretical and experimental analyses of deep brain stimulation (DBS) in the subthalamic nucleus (STN) show both excitatory and inhibitory effects on the neural elements surrounding the electrode. Given these observations, the mechanism underlying the therapeutic effect of STN DBS on parkinsonian motor signs remains u...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2008.01.032
更新日期：2008-05-01 00:00:00
abstract：:Adult mammalian retinal ganglion cells (RGCs) can regenerate through peripheral nerve (PN) grafts and innervate central nervous system (CNS) targets. Previous studies have demonstrated a basic level of differentiation of such projections. To further assess the specificity and functionality of regenerated CNS connectio...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1997.6495
更新日期：1997-08-01 00:00:00
abstract：:The piriform cortex is recognized to play critical roles in focal ictogenesis, both in animal models and in humans. We review here the contribution of in vitro studies performed on rodent brain tissue that were aimed at understanding the ictogenic properties of the piriform cortex and the contiguous olfactory areas. D...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2019.113014
更新日期：2019-11-01 00:00:00
abstract：:Hyperbaric oxygen preconditioning (HBO-PC) has been demonstrated to attenuate hemorrhagic transformation (HT) after middle cerebral artery occlusion (MCAO) in hyperglycemic rats. However, the mechanisms remain to be illustrated. Recently, HBO-PC has been shown to activate peroxisome proliferator-activated receptor-gam...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.12.016
更新日期：2015-03-01 00:00:00
abstract：:Apolipoprotein E (apoE) is known to bind to at least five receptors, including the low-density lipoprotein (LDL) receptor-related protein (LRP), very low density LDL receptor (VLDL-R), LDL-R, apoE receptor 2 (apoER2), and megalin/gp330. In this context, the main objective of the present study was to better understand ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2001.7684
更新日期：2001-07-01 00:00:00
abstract：:The clinical outcome of peripheral nerve injuries requiring surgical repair is usually poor and efficient therapies do not exist. Recent work has suggested that low-frequency electrical stimulation of the severed nerve which produces repeated discharges of the parent motoneuron perikarya positively influences axonal r...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2007.08.005
更新日期：2007-11-01 00:00:00
abstract：:This paper focuses on transient boundaries of glia and glycoconjugates during development of the mouse central nervous system (CNS). Lectin-bound glycoconjugates, glial fibrillary acidic protein, and the J1/tenascin glycoprotein are distributed coextensively within boundaries around developing substructural arrangemen...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/s0014-4886(05)80007-x
更新日期：1990-07-01 00:00:00
abstract：:Fibroblast and epidermal growth factors (FGF-2 and EGF) are powerful mitogens for neural precursor cells isolated from the developing striatum and grown as neurospheres. However, questions remain as to the exact role of each of these molecules, and how the proteoglycan heparin may modify their behavior. Here, we show ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2004.05.007
更新日期：2004-08-01 00:00:00
abstract：:In the cerebellum of adult-aging Ts65Dn mice, a murine model of Down syndrome, Purkinje cells undergo degeneration. Searching for the cause of Purkinje cell degeneration, we have studied the ubiquitin-proteasome system (UPS) in the cerebellum of aging Ts65Dn mice. Inhibition of UPS is sufficient to induce neuron degen...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2011.08.009
更新日期：2011-12-01 00:00:00
abstract：:Focal limbic seizures often impair consciousness/awareness with major negative impact on quality of life. Recent work has shown that limbic seizures depress brainstem arousal systems, including reduced action potential firing in a key node: cholinergic neurons of the pedunculopontine tegmental nucleus (PPT). In vivo w...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2018.11.008
更新日期：2019-04-01 00:00:00
abstract：:The role of interferon-gamma (IFN-gamma) in the pathogenesis of multiple sclerosis and experimental autoimmune encephalomyelitis (EAE) is still controversial. We have studied the function of IFN-gamma and its receptor in the EAE model using two different IFN-gamma receptor knockout (IFN-gamma R(-/-)) mouse types: C57B...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2001.7815
更新日期：2001-12-01 00:00:00
abstract：:The cascade of events leading to post-traumatic epilepsy (PTE) after traumatic brain injury (TBI) remains unclear. Altered inhibition in the hippocampal formation and dentate gyrus is a hallmark of several neurological disorders, including TBI and PTE. Inhibitory synaptic signaling in the hippocampus is predominately ...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2016.03.022
更新日期：2016-06-01 00:00:00
abstract：BACKGROUND:Novel strategies to improve hand function after stroke are needed. Electromyography-triggered functional neuromuscular stimulation (EMG-FNMS) and repetitive transcranial magnetic stimulation (rTMS) are promising techniques to facilitate recovery of sensory-motor hand dysfunction after stroke. OBJECTIVE:To i...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2011.04.010
更新日期：2011-07-01 00:00:00
abstract：:Urethane-induced cortical slow wave activity (SWA) spreads into the basal ganglia in dopamine (DA)-depleted rat models of Parkinson's disease (PD). During physiological sleep, SWA is powerfully expressed at the beginning of night and progressively reduced during sleep-time reflecting the sleep need. However, its under...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2017.12.004
更新日期：2018-03-01 00:00:00
abstract：:Overt behavioral symptoms of Parkinson's disease (PD) do not occur until over 80% of the striatal dopamine content has been lost. Diagnosis of the disorder relies on identifying clinical symptoms including akinesia, resting tremor, and rigidity. In retrospect, behavioral deficits are observed several years prior to di...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2002.8021
更新日期：2002-11-01 00:00:00
abstract：BACKGROUND:Cognitive impairment in humans with Alzheimer's disease (AD) and in animal models of Aβ-pathology can be ameliorated by treatments with the nuclear receptor peroxisome proliferator-activated receptor-gamma (PPARγ) agonists, such as rosiglitazone (RSG). Previously, we demonstrated that in the Tg2576 animal mo...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2017.05.005
更新日期：2017-09-01 00:00:00
abstract：:The members of the tenascin family are involved in a number of developmental processes, mainly by their ability to regulate cell adhesion. We have here studied the distribution of mRNAs for tenascin-X, -C, and -R and the closely related molecule tenascin/J1 in the olfactory system and spinal cord. The olfactory bulb a...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2000.7543
更新日期：2000-12-01 00:00:00
abstract：:A central role for noradrenergic dysregulation in the pathophysiology of post-traumatic stress disorder (PTSD) is increasingly suggested by both clinical and basic neuroscience research. Here, we integrate recent findings from clinical and animal research with the earlier literature. We first review the evidence for n...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2016.05.014
更新日期：2016-10-01 00:00:00
abstract：:The distribution and relative intrafascicular contribution of myelin fibers derived from spinal segments L-4 to L-6 were analyzed in adult rat sciatic nerve and its main branches, using 200-kDa neurofilament subunit immunodetection in previously injured nerve sections in the L-4 or L-5 spinal branch or both. These bra...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.2001.7806
更新日期：2002-02-01 00:00:00
abstract：:Bax, a member of the Bcl-2 gene family, is known to promote apoptosis in many cases but to block cell death under certain conditions. To investigate the potential role of Bax in 6-hydroxydopamine (6-OHDA)-induced cell death, we first established and characterized a dopaminergic neuronal cell line (MN9D) stably overexp...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1998.6923
更新日期：1998-11-01 00:00:00
abstract：:Stroke causes CNS injury associated with strong fast microglial activation as part of the inflammatory response. In rat models of stroke, sulphonylurea receptor blockade with glibenclamide reduced cerebral edema and infarct volume. We postulated that glibenclamide administered during the early stages of stroke might f...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2012.02.010
更新日期：2012-05-01 00:00:00
abstract：:In the neocortex, the effectiveness of potential transplantation therapy for diseases involving neuronal loss may depend upon whether donor neurons can reestablish the precise long-distance projections that form the basis of sensory, motor, and cognitive function. During corticogenesis, the formation of these connecti...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1996.0088
更新日期：1996-05-01 00:00:00
abstract：:Chemotherapy-related cognitive deficits are a major neurological problem, but the underlying mechanisms are unclear. The death of neural stem/precursor cell (NSC) by cisplatin has been reported as a potential cause, but this requires high doses of chemotherapeutic agents. Cisplatin is frequently used in modern oncolog...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2014.02.020
更新日期：2014-05-01 00:00:00
abstract：:Noninvasive, targeted drug delivery to the brain can be achieved using transcranial focused ultrasound (FUS), which transiently increases the permeability of the blood-brain barrier (BBB) for localized delivery of therapeutics from the blood to the brain. Previously, we have demonstrated that FUS can deliver intraveno...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2013.05.008
更新日期：2013-10-01 00:00:00
abstract：:Diffuse and neuritic plaques are sites of accumulation of beta-amyloid peptides (A beta) in the brains of Alzheimer's disease (AD) patients. Although amyloid fibrils are formed from A beta, the contribution of other plaque-associated proteins and peptides to the pathogenesis of AD amyloidosis is unknown. To pursue thi...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1006/exnr.1994.1209
更新日期：1994-12-01 00:00:00
abstract：:No current therapy for Parkinson disease has been shown to slow or reverse the progressive course of the disease. As a departure from traditional treatments, gene therapy approaches provide a new hope for realizing this long-sought goal; but before they can be widely employed for use in patients, they must first be su...
journal_title：Experimental neurology
pub_type： 杂志文章,评审
doi：10.1016/j.expneurol.2007.08.012
更新日期：2008-01-01 00:00:00
abstract：:Systematic protein expression studies in the brain of exercising and sedentary animals have not been carried out so far and it was therefore decided to determine differences in metabolic protein levels in rat hippocampus of sedentary, voluntary and involuntary exercising rats by a proteomic approach. Aged, male Spragu...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/j.expneurol.2008.03.014
更新日期：2008-07-01 00:00:00
abstract：:The regional, cellular, and subcellular localization of phosphorylated p38 MAPK (pp38) was examined by immunocytochemistry, immuofluorescent multiple labeling, and immunoblotting of extracts as well as immunoprecipitates of human postmortem tissue from control and Alzheimer's disease (AD) cases at different Braak stag...
journal_title：Experimental neurology
pub_type： 杂志文章
doi：10.1016/s0014-4886(03)00180-8
更新日期：2003-10-01 00:00:00
