Abstract:
:Falls are a major source of hospitalization, long-term institutionalization, and death in older adults and patients with Parkinson's disease (PD). Limited attentional resources are a major risk factor for falls. In this review, we specify cognitive-behavioral mechanisms that produce falls and map these mechanisms onto a model of multi-system degeneration. Results from PET studies in PD fallers and findings from a recently developed animal model support the hypothesis that falls result from interactions between loss of basal forebrain cholinergic projections to the cortex and striatal dopamine loss. Striatal dopamine loss produces inefficient, low-vigor gait, posture control, and movement. Cortical cholinergic deafferentation impairs a wide range of attentional processes, including monitoring of gait, posture and complex movements. Cholinergic cell loss reveals the full impact of striatal dopamine loss on motor performance, reflecting loss of compensatory attentional supervision of movement. Dysregulation of dorsomedial striatal circuitry is an essential, albeit not exclusive, mediator of falls in this dual-system model. Because cholinergic neuromodulatory activity influences cortical circuitry primarily via stimulation of α4β2* nicotinic acetylcholine receptors, and because agonists at these receptors are known to benefit attentional processes in animals and humans, treating PD fallers with such agonists, as an adjunct to dopaminergic treatment, is predicted to reduce falls. Falls are an informative behavioral endpoint to study attentional-motor integration by striatal circuitry.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Sarter M,Albin RL,Kucinski A,Lustig Cdoi
10.1016/j.expneurol.2014.04.032subject
Has Abstractpub_date
2014-07-01 00:00:00pages
120-9eissn
0014-4886issn
1090-2430pii
S0014-4886(14)00134-4journal_volume
257pub_type
杂志文章,评审abstract::Four lectins (Abrus precatorius (APA), Maackia amurensis (MAA), Momordica charantia (MCA) and Sambucus nigra (SNA)) have been used to identify glycohistochemically the microglial cells (MGC) activation in autoptic brain samples from Alzheimer's disease (AD) subjects. Three of these lectins (APA, MAA and MCA) have util...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1998.6862
更新日期:1998-09-01 00:00:00
abstract::In this study, the effects of testosterone propionate (TP) on recovery from facial paralysis following crush axotomy of the facial nerve in male hamsters were examined. In the first experiment, TP (5 mg/ml sesame oil; 0.1 ml) was injected subcutaneously and on alternate days in one-half of the animals subjected to cru...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(89)90174-x
更新日期:1989-07-01 00:00:00
abstract::With the use of four independent cell markers and Brd-U birthdating we have charted the earliest stages of neuronal differentiation and migration in the developing rat central nervous system, including the cortex, spinal cord, and retina. One of the markers, the monoclonal antibody 2G12, labeled a large subpopulation ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1995.1031
更新日期:1995-07-01 00:00:00
abstract::The behavioral effects of augmenting dopamine D1 receptor expression in the brain were investigated in mice incorporating additional copies of the mouse D1 receptor gene. Two transgenic lines showed increases in brain D1 receptor binding sites, which were greatest in extrastriatal regions. The full D1 agonist SKF 8129...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1999.7037
更新日期:1999-05-01 00:00:00
abstract::Frequency information of the environment is an important feature for sensory perception. It has been demonstrated that cortical and thalamic neurons exhibited frequency-specific responses to peripheral stimulation. In the present study, we investigated the effects of 1-100 Hz peripheral electrical stimulations on vari...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2005.07.019
更新日期:2005-11-01 00:00:00
abstract::Physiological/anatomical studies of rat frontal cortex in vitro have distinguished subpopulations of gamma-aminobutyric acid (GABA)-expressing inhibitory interneurons defined by expression of the calcium-binding proteins, parvalbumin (PV) and calbindin (CA). Using a novel 2DG/immunostaining technique to double-label h...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1997.6426
更新日期:1997-05-01 00:00:00
abstract::Therapeutic hypothermia is a potential protective strategy after stroke. The present study evaluated the neurovascular protective potential of pharmacological hypothermia induced by the neurotensin receptor 1 agonist HPI-201 after severe ischemic stroke. Adult C57BL/6 mice were subjected to filament insertion-induced ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2019.113133
更新日期:2020-03-01 00:00:00
abstract::Diabetes mellitus is a common metabolic disease in human beings with characteristic symptoms of hyperglycemia, chronic inflammation and insulin resistance. One of the most common complications of early-onset diabetes mellitus is peripheral diabetic neuropathy, which is manifested either by loss of nociception or by al...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2015.06.022
更新日期:2015-09-01 00:00:00
abstract::In this study, we show that removal of entorhinal cortex (ERC) afferents to hippocampus reduces levels of presenilin 1 (PS1) in the dentate gyrus of APPswe/PS1DeltaE9 transgenic (Tg) mice. PS1 immunoreactivity on the deafferented dentate gyrus decreases by approximately 25% and 50%, 2 and 4 weeks post-lesion compared ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2003.08.018
更新日期:2003-12-01 00:00:00
abstract::Acute exposure of peripheral axons to the free radical Nitric Oxide (NO) may trigger conduction block and, if prolonged, Wallerian degeneration. It was hypothesized that this neurotoxic effect of NO may be due primarily to energy restriction by inhibition of mitochondrial respiration. We compared the neurotoxic effect...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2008.03.022
更新日期:2008-07-01 00:00:00
abstract::Paired-pulse potentiation was studied in the CA1 region of rats exposed prenatally to alcohol. Pregnant rats were fed a liquid diet containing 35% ethanol-derived calories on days 3 to 21 of gestation. Control animals were fed liquid diets without ethanol. When the pups of both groups were 40 to 60 days old, hippocamp...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(86)90203-7
更新日期:1986-08-01 00:00:00
abstract::Patients with inflammatory bowel disease (IBD) or irritable bowel syndrome (IBS) often experience increased sensory responsiveness in the urinary bladder reflecting neurogenic bladder overactivity. Here we demonstrate that colitis-induced up-regulation of the phospholipase C gamma (PLCγ) pathway downstream of brain-de...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2015.12.006
更新日期:2016-11-01 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::There is compelling evidence that excessive exposure to manganese (Mn) produces neurotoxicity, especially in the basal ganglia, resulting in a dystonic Parkinsonian disorder. Several experimental or clinical observations suggest that Mn neurotoxicity could involve impairment of energy metabolism. We examined the neuro...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1993.1042
更新日期:1993-03-01 00:00:00
abstract::Thyroid hormones and spermidine, a motor neuron trophic polyamine (PA), have been shown to enhance peripheral motor nerve regeneration; however, the mechanism by which these treatment modalities exert their effect is unknown. Similarities in treatment outcome suggest that these molecules may be working via a common me...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2004.05.024
更新日期:2004-09-01 00:00:00
abstract::Estrogens and N-methyl-D-aspartate (NMDA) receptors regulate multiple aspects of morphological and functional plasticity in young animals. For example, estrogens increase spine density in the hippocampus, and NMDA antagonists block these effects. Few studies have examined the effects of age, postovariectomy interval, ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2001.7716
更新日期:2001-08-01 00:00:00
abstract::Anterograde transneuronal degeneration is caused by the loss of afferent input to the nerve cells and may occur in a number of neuronal systems. Transection of the adult spinal cord, causing anterograde transneuronal degeneration in ventral horn neurons, distal to the lesion, has been reported by some authors, while o...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:
更新日期:1997-11-01 00:00:00
abstract::The role of type IIA receptor protein tyrosine phosphatases (RPTPs), which includes LAR, RPTPσ and RPTPδ, in the nervous system is becoming increasingly recognized. Evidence supports a significant role for these RPTPs during the development of the nervous system as well as after injury, and mutations in RPTPs are asso...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2014.02.007
更新日期:2014-05-01 00:00:00
abstract::GAP-43 is a neuronal protein whose synthesis is elevated during developmental and regenerative axon growth. We propose that one consequence of this increased synthesis may be the delivery of calmodulin-like proteins to the distal portions of the growing axon at an increased velocity; this is because calmodulin, which ...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1016/0014-4886(92)90243-j
更新日期:1992-01-01 00:00:00
abstract::The GluN2 subunits that compose N-methyl-d-aspartate receptors (NMDARs) are attractive drug targets for therapeutic intervention in several diseases, in particular Parkinson's disease (PD). The precise roles and possible dysfunctions of NMDARs attributed to specific GluN2 subunits are however unresolved. Through the u...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2014.03.001
更新日期:2014-05-01 00:00:00
abstract::Downregulation in the astroglial glutamate transporter EAAT2 in amyotrophic lateral sclerosis (ALS) patients and mutant SOD1 mouse models of ALS is believed to contribute to the death of motor neurons by excitotoxicity. We previously reported that caspase-3 cleaves EAAT2 at a unique cleavage consensus site located in ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2017.03.014
更新日期:2017-06-01 00:00:00
abstract::Huntington's disease (HD) is a progressive neurodegenerative disorder characterized by chorea, psychiatric disturbances, and dementia. It is caused by a polyglutamine repeat expansion in the huntingtin protein. The striatum is a major site of neuronal loss in HD, but the mechanisms underlying the neurodegenerative pro...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2000.7434
更新日期:2000-09-01 00:00:00
abstract::Impaired olfaction is an early symptom of Alzheimer disease (AD). This likely to reflect neurodegenerative processes taking place in basal telencephalic structures that mediate olfactory processing, including the anterior olfactory nucleus. Betaeta-amyloid (Abeta) accumulation in AD brain may relate to decline in soma...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2009.06.010
更新日期:2010-06-01 00:00:00
abstract::Neurogenesis continues in various regions of the central nervous system (CNS) throughout life. As the mitogen basic fibroblast growth factor (bFGF) can proliferate neuronal precursors of CNS neurons in culture, and is also upregulated within adult dorsal root ganglia following axotomy, it is possible that the postnata...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2001.7761
更新日期:2001-11-01 00:00:00
abstract::The extensive period of retinal ganglion cell (RGC) neurogenesis in the rat is associated with a protracted sequence of arrival of their axons into central targets such as the superior colliculus (SC) (Dallimore et al., 2002). Using in utero 5-bromo-2'-deoxyrudine (BrdU) injections to label early (embryonic day (E) 15...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2010.07.007
更新日期:2010-10-01 00:00:00
abstract::Abnormal corticostriatal plasticity is a key mechanism of L-DOPA-induced dyskinesia (LID) in Parkinson's disease (PD). Antagonists at glutamatergic α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors, such as IEM 1460, reduce induction and expression of dyskinesia in rat and non-human primate models ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2013.01.019
更新日期:2013-09-01 00:00:00
abstract::Spasticity is a condition that can include increased muscle tone, clonus, spasms, and hyperreflexia. In this study, we report the effect of manually stimulating the dorsal lumbosacral skin on spontaneous locomotor-like activity and on a variety of reflex responses in 5 decerebrate chronic spinal cats treated with clon...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2012.03.013
更新日期:2012-06-01 00:00:00
abstract::This study describes the short-term effects of intracaudate microinjections of carbachol in temporarily isolated and restrained Java monkeys. The monkeys were found to display a series of motor disturbances including blepharoptosis, facial twitches, tongue protrusions, ear flattening, torticollis, and compulsive alter...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(85)90133-5
更新日期:1985-01-01 00:00:00
abstract::Posttraumatic inflammation has been implicated in secondary tissue damage after spinal cord injury (SCI). Tumor necrosis factor-alpha (TNF-alpha) is a key inflammatory mediator that is increasingly expressed after SCI. The effect of TNF-alpha is mediated through its receptors TNFR1 (p55) and TNFR2 (p75). However, whet...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/s0014-4886(03)00135-3
更新日期:2003-10-01 00:00:00
abstract::A single fourth lumbar dorsal rootlet was transected at the entry point into the spinal cord. The nerve fibres were labelled with biotin dextran injected into the rootlet. An endogenous matrix containing olfactory-ensheathing cells (OECs) labelled with green fluorescent protein was applied to the opposing cut surfaces...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2004.04.021
更新日期:2004-08-01 00:00:00