Abstract:
:The current functional model of the basal ganglia suggests that dyskinesia results from abnormally low activity at the output of the system. This view appears incomplete. The recent literature suggests other factors. Thus, dyskinesia may result from disturbance of surround inhibition: a physiologic mechanism to select neuronal responses. A major criterion for selection in the basal ganglia is prediction of reward, materialized by release of dopamine. However, much of this release is independent of impulse flow, and controlled presynaptically, at a myriad of terminals, whose presence is then essential. Thus, levodopa in parkinsonism is likely to exaggerate imbalance between regions of the basal ganglia more or less deprived of dopaminergic terminals. The cortex and thalamus may be viewed as equally important afferents to the basal ganglia. Each of them appears to influence preponderantly its own half of striatal projection neurons. Those of the indirect pathway would be part of a mainly transcortical loop, specialized for the precise weighing, and selection of cortical information. Those of the direct pathway would be part of a predominantly subcortical loop, more likely concerned by changes in alertness and attention. Dyskinesia could thus result from imbalance between cortical and thalamic functions, between selection and attention.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Filion Mkeywords:
subject
Has Abstractpub_date
2000-04-01 00:00:00pages
S35-40; discussion S40-1issue
4 Suppl 1eissn
0364-5134issn
1531-8249journal_volume
47pub_type
杂志文章,评审abstract::Fifteen drug-free patients with early to midstage Huntington's disease were evaluated with quantitative neurological examinations, scales for functional capacity, computed tomographic (CT) scans, and positron emission tomographic (PET) scans of 18F-2-fluoro-2-deoxyglucose (18F-FDG) uptake. All patients had abnormal in...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410200305
更新日期:1986-09-01 00:00:00
abstract::Guillain-Barré syndrome (GBS) is an immune-mediated neuropathy, in which leukocytes and humoral components of the immune system proposedly initiate localized inflammation. An important pathogenic role for anti-GM1 ganglioside antibodies has been suggested. Therefore, we evaluated anti-GM1 IgG antibody-induced leukocyt...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10503
更新日期:2003-05-01 00:00:00
abstract::Charcot-Marie-Tooth (CMT) neuropathies are inherited neuromuscular disorders caused by a length-dependent neurodegeneration of peripheral nerves. More than 900 mutations in 60 different genes are causative of the neuropathy. Despite significant progress in therapeutic strategies, the disease remains incurable. The inc...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.23987
更新日期:2013-09-01 00:00:00
abstract::Cerebral blood flow velocity (CBF-V) measured by transcranial doppler was assessed in 628 elderly individuals who had cerebral magnetic resonance imaging performed as part of a population-based study on vascular aging. Cerebral white matter hyperintensities (WMHs) were associated with low CBF-V, such as the adjusted o...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract:OBJECTIVE:Oral anticoagulation treatment (OAT) resumption is a therapeutic dilemma in intracerebral hemorrhage (ICH) care, particularly for lobar hemorrhages related to amyloid angiopathy. We sought to determine whether OAT resumption after ICH is associated with long-term outcome, accounting for ICH location (ie, loba...
journal_title:Annals of neurology
pub_type: 杂志文章,meta分析,多中心研究
doi:10.1002/ana.25079
更新日期:2017-11-01 00:00:00
abstract::Patients with multiple sclerosis (MS) frequently have selective depletion of the CD45R+CD4+ T-cell subset during active phases of disease. To study the relationship between changes in this subset and the onset of objective clinical exacerbations of disease, a longitudinal study was undertaken. Two CD4+ T-cell subsets ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410240204
更新日期:1988-08-01 00:00:00
abstract::We report the clinical and neuropathological findings in an immunocompetent 19-year-old patient with a fatal acute Epstein-Barr virus (EBV) meningoencephalitis and a lymphoma-like B-lymphocyte response. Our results suggest that an immunotoxic rather than direct viral neuronal invasion mediates brain damage in EBV ence...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/1531-8249(199905)45:5<659::aid-ana16>3.0.c
更新日期:1999-05-01 00:00:00
abstract::Recently, the mutation causing early-onset generalized torsion dystonia has been identified as a GAG deletion in the gene for an adenosine triphosphate-binding protein named torsinA. We describe a German family with 5 clinically affected individuals carrying this mutation. In at least 4 of the 5 patients, the disease ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410440119
更新日期:1998-07-01 00:00:00
abstract::Infection by the human immunodeficiency virus type 1 (HIV-1) often results in neurological dysfunction including HIV dementia (HIVD). Alterations in cytokine and redox balance are thought to play important roles in the pathogenesis of HIVD, but the specific mechanisms underlying neuronal dysfunction and death are unkn...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10828
更新日期:2004-02-01 00:00:00
abstract:OBJECTIVE:Accumulation of mitochondrial DNA (mtDNA) damage has been associated with aging and abnormal oxidative metabolism. We hypothesized that in human immunodeficiency virus-associated sensory neuropathy (HIV-SN), damaged mtDNA accumulates in distal nerve segments, and that a spatial pattern of mitochondrial dysfun...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.22150
更新日期:2011-01-01 00:00:00
abstract::Although genome-wide association studies (GWAS) have proven remarkably effective at identifying reliably associated genetic variants, the biology underlying these discoveries is rarely immediately apparent and in most cases seems bound to require extensive fine mapping and functional analysis before it is revealed. In...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.23613
更新日期:2012-10-01 00:00:00
abstract::Powerful new methods for imaging both brain anatomy and brain function are appearing at an increasing rate. The modern era of minimally invasive, highly informative, neurological diagnostic imaging methods began with the introduction of x-ray computed tomography in the 1970s. More recently, positron emission tomograph...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.410320316
更新日期:1992-09-01 00:00:00
abstract::Despite many years of intensive research, multiple sclerosis (MS) defies understanding and treatment remains suboptimal. The prevailing hypothesis is that MS is immune mediated and that experimental allergic encephalomyelitis (EAE) is a suitable model to elucidate pathogenesis and devise therapy. This review examines ...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.20743
更新日期:2005-12-01 00:00:00
abstract::The genetic architecture of common epilepsies is largely unknown. HCNs are excellent epilepsy candidate genes because of their fundamental neurophysiological roles. Screening in subjects with febrile seizures and genetic epilepsy with febrile seizures plus revealed that 2.4% carried a common triple proline deletion (d...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21909
更新日期:2010-04-01 00:00:00
abstract::Progressive multifocal leukoencephalopathy (PML) complicating the acquired immunodeficiency syndrome (AIDS) is typically inexorably progressive with death usually occurring within 6 months of symptom onset. Occasional patients have been observed to survive longer than 1 year, often with remission of clinical features....
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410440309
更新日期:1998-09-01 00:00:00
abstract::Two principal features of Alzheimer's disease (AD) are (1) the occurrence of neurofibrillary tangles (NFTs) and senile plaques, and (2) the loss of cortical cholinergic activity because of dysfunction of neurons in the basal forebrain cholinergic system. The relationship of these two abnormalities is an unresolved iss...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410200407
更新日期:1986-10-01 00:00:00
abstract::Serological evidence of either acute cytomegalovirus (CMV) or Epstein-Barr virus (EBV) infection was sought in a large series of patients with Guillain-Barré syndrome (GBS) and control subjects. Using an indirect immunofluorescent technique, IgM antibody directed against CMV was found in the serum of 33 of 220 GBS pat...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410090709
更新日期:1981-01-01 00:00:00
abstract::Benign familial neonatal convulsions (BFNC) is a rare dominantly inherited epileptic syndrome characterized by frequent brief seizures within the first days of life. The disease is caused by mutations in one of two recently identified voltage-gated potassium channel genes, KCNQ2 or KCNQ3. Here, we describe a four-gene...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/1531-8249(199909)46:3<305::aid-ana5>3.0.co
更新日期:1999-09-01 00:00:00
abstract:OBJECTIVE:We examined the association of nutrient intake with microstructural white matter integrity, and the role of white matter integrity in the association between nutrient consumption and cognition. METHODS:This cross-sectional analysis included 239 elderly (age ≥ 65 years) participants of a multiethnic cohort. W...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24674
更新日期:2016-06-01 00:00:00
abstract::Patients are understandably anxious if seizures occur immediately after temporal lobectomy. Such "neighborhood" seizures are commonly regarded as irrelevant to seizure outcome and discounted in outcome measurement. We conducted an in-depth examination of early postoperative seizures (<28 days) and outcome. The risk of...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20372
更新日期:2005-02-01 00:00:00
abstract::Ten patients developed a subacute lower motor neuron syndrome as a remote effect of Hodgkin's disease or other lymphoma. The illness usually followed a benign course independent of the activity of the underlying neoplasm. Seven of the patients improved spontaneously, and 3 became neurologically normal. Two patients di...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410050310
更新日期:1979-03-01 00:00:00
abstract:OBJECTIVE:The primary imaging modalities used to select patients for endovascular thrombectomy (EVT) are noncontrast computed tomography (CT) and CT perfusion (CTP). However, their relative utility is uncertain. We prospectively assessed CT and CTP concordance/discordance and correlated the imaging profiles on both wit...
journal_title:Annals of neurology
pub_type: 杂志文章,多中心研究
doi:10.1002/ana.25669
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVE:To evaluate the outcomes 1 year and longer following stereotactic laser amygdalohippocampotomy for mesial temporal lobe epilepsy in a large series of patients treated over a 5-year period since introduction of this novel technique. METHODS:Surgical outcomes of a consecutive series of 58 patients with mesial ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.25180
更新日期:2018-03-01 00:00:00
abstract::We compared epilepsy phenotypes with genotypes of Angelman syndrome (AS), including chromosome 15q11-13 deletions (class I), uniparental disomy (class II), methylation imprinting abnormalities (class III), and mutation in the UBE3A gene (class IV). Twenty patients were prospectively selected based on clinical cytogene...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410430412
更新日期:1998-04-01 00:00:00
abstract::Immunohistochemical examination of 20 Down's syndrome brains, using antibodies to alpha-, beta-, and gamma-synuclein, demonstrated many alpha-synuclein-positive Lewy bodies and dystrophic neurites in 50% of amygdala samples from Down's syndrome brains with Alzheimer's disease. Similar lesions were less common in other...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/1531-8249(199903)45:3<353::aid-ana11>3.0.c
更新日期:1999-03-01 00:00:00
abstract:OBJECTIVE:To determine whether brain activation changes in clinically and neurocognitively normal human immunodeficiency virus (HIV)-infected and in HIV-seronegative control (SN) participants over a 1-year period. METHODS:Functional magnetic resonance imaging (fMRI) was performed in 32 SN and 31 HIV patients (all with...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21594
更新日期:2009-03-01 00:00:00
abstract::An in vitro preparation has been developed in which epileptogenesis in mammalian central nervous system tissue may be studied. Addition of sodium penicillin to the medium bathing slices of guinea pig hippocampus induced epileptiform activity similar to that seen in hippocampal penicillin foci in vivo. Epileptiform eve...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410010510
更新日期:1977-05-01 00:00:00
abstract::As more small peptidergic components of the central nervous system are isolated, their role in disease states is being investigated. Several of these neuropeptides, especially the opioidlike peptides, adrenocorticotropic hormone, and some hypothalamic releasing factors, have been found to alter neuronal excitability. ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410160707
更新日期:1984-01-01 00:00:00
abstract:OBJECTIVE:Ischemic injury of axons is a feature of periventricular leukomalacia, a pathological correlate of cerebral palsy. Recent evidence suggests that axons are damaged before they receive the first layer of compact myelin. Here we examine the cellular mechanisms underlying ischemic-type injury of premyelinated cen...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21767
更新日期:2009-11-01 00:00:00
abstract::Astrocytic necrosis is a prominent pathological feature of neuromyelitis optica (NMO) lesions and is clinically relevant. We report 5 NMO-related cases, all with longitudinally extensive lesions in the upper cervical cord, who underwent cervical cord (1) H-magnetic resonance spectroscopy. Lower myo-inositol/creatine v...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.23909
更新日期:2013-08-01 00:00:00