Patients with MCI and N400 or P600 abnormalities are at very high risk for conversion to dementia.

Abstract:

OBJECTIVE:We sought cognitive event-related potential (ERP) biomarkers of disease progression and subsequent conversion to dementia in mild cognitive impairment (MCI). BACKGROUND:Two ERP components, the P600 and N400, are sensitive to abnormal episodic/declarative memory and semantic processing. When congruous category-exemplars are repeated, smaller P600s (relative to initial presentation) are normally elicited. Repetitions of semantically incongruous words yield smaller N400 amplitude. In mild Alzheimer disease (AD), abnormalities of both the N400 and P600 repetition effects are present, suggesting a widespread failure of synaptic plasticity. METHODS:Patients with amnestic MCI (n = 32) were longitudinally studied annually with an ERP paradigm in which semantically congruous (50%) and incongruous target words are repeated 10 to 140 seconds after initial presentation. ERP data were analyzed to contrast MCI-to-AD converters (within 3 years) vs nonconverters, using split-plot analyses of variance. RESULTS:A statistically significant P600 congruous word repetition effect was found only in the nonconverter group (F = 9.9, p = 0.005 vs MCI converters). This effect correlated with verbal memory measures. Repetition of incongruous words produced a significant N400 amplitude attenuation (across right-hemisphere sites) in nonconverters, but not in converters. Patients with MCI with abnormal/reduced N400 or P600 word repetition effects had an 87 to 88% likelihood of dementia within 3 years while those with normal/spared N400 and P600 repetition effects had only an 11 to 27% likelihood. CONCLUSIONS:Abnormalities of the P600 or N400 in mild cognitive impairment are associated with an increased risk of subsequent conversion to Alzheimer disease (AD). These event-related potential components may offer useful biomarkers for the detection and staging of very early AD.

journal_name

Neurology

journal_title

Neurology

authors

Olichney JM,Taylor JR,Gatherwright J,Salmon DP,Bressler AJ,Kutas M,Iragui-Madoz VJ

doi

10.1212/01.wnl.0000281689.28759.ab

subject

Has Abstract

pub_date

2008-05-06 00:00:00

pages

1763-70

issue

19 Pt 2

eissn

0028-3878

issn

1526-632X

pii

01.wnl.0000281689.28759.ab

journal_volume

70

pub_type

杂志文章
  • Regulatory and reimbursement issues in treating patients with immune-mediated neuropathies.

    abstract::Neurologists are prescribing intravenous immunoglobulin (IVIg) with increasing frequency to treat many neurologic conditions that have a proven or presumed autoimmune or inflammatory pathogenesis. Although IVIg is not FDA approved for any neurologic condition, physicians can safely prescribe it for several disorders w...

    journal_title:Neurology

    pub_type: 杂志文章,评审

    doi:10.1212/wnl.59.12_suppl_6.s41

    authors: Donofrio PD,Busis NA

    更新日期:2002-12-24 00:00:00

  • Long-term experience with selegiline and levodopa in Parkinson's disease.

    abstract::Between 1982 and 1989, 197 patients with Parkinson's disease were treated with selegiline and levodopa for at least 0.3 years. Two groups of patients were included: a group of 65 patients (stage 2 or 3 on the Hoehn and Yahr Scale) who recently had been started on levodopa and were not experiencing response fluctuation...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:

    authors: Lieberman A

    更新日期:1992-04-01 00:00:00

  • Phenytoin elimination in childhood: effect of concentration-dependent kinetics.

    abstract::The effect of phenytoin (PHT) concentration on the elimination rate of PHT was evaluated in infants, children, and young adults ranging in age from 1 day to 22 years. As PHT concentration increased, the effective half-life (t50%) increased. In eight children, age 7 months to 4.83 years with initial concentrations betw...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.30.2.196

    authors: Dodson WE

    更新日期:1980-02-01 00:00:00

  • Mevalonate kinase deficiency: Evidence for a phenotypic continuum.

    abstract::Both mevalonic aciduria, characterized by psychomotor retardation, cerebellar ataxia, recurrent fever attacks, and death in early childhood, and hyper-immunoglobulin D (hyper-IgD) syndrome, with recurrent fever attacks without neurologic symptoms, are caused by a functional deficiency of mevalonate kinase. In a system...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000115390.33405.f7

    authors: Simon A,Kremer HP,Wevers RA,Scheffer H,De Jong JG,Van Der Meer JW,Drenth JP

    更新日期:2004-03-23 00:00:00

  • Etiology of aseptic meningitis and encephalitis in an adult population.

    abstract:OBJECTIVE:To investigate the etiology of aseptic meningitis and encephalitis in an adult population using modern microbiologic methods. METHODS:Consecutive patients (ages > or =16) with aseptic meningitis or encephalitis treated in Turku University Hospital, Finland, during 1999 to 2003 were included in the study. Mic...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000191407.81333.00

    authors: Kupila L,Vuorinen T,Vainionpää R,Hukkanen V,Marttila RJ,Kotilainen P

    更新日期:2006-01-10 00:00:00

  • Lapse of consciousness and automatisms in temporal lobe epilepsy: a videotape analysis.

    abstract::Videotape analysis of 76 attacks in 14 epileptics showed two electro-clinical types of psychomotor attacks. The first and most common type had three clinical phases, consisting of an initial motionless stare, stereotyped movements, and reactive automatisms during impaired consciousness. The second and less common type...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.27.2.144

    authors: Escueta AV,Kunze U,Waddell G,Boxley J,Nadel A

    更新日期:1977-02-01 00:00:00

  • Reversibility of Parinaud syndrome in thalamic hemorrhage.

    abstract::Parinaud syndrome, associated with a left thalamic hemorrhage, disappeared completely in a 57-year-old woman after ventriculoperitoneal shunt. The syndrome may be attributed to increased intracranial pressure owing to mass effect on the pretectal region and tectum, or to tightness in the incisura causing hydrocephalus...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.29.3.407

    authors: Waga S,Okada M,Yamamoto Y

    更新日期:1979-03-01 00:00:00

  • Abdominal wall weakness due to thoracic syringomyelia.

    abstract::We describe a patient who presented with unilateral abdominal herniation due to weakness of abdominal musculature, associated with extensive syringomyelia. Electromyographic evidence of focal denervation and reinnervation was present in the weak muscles consistent with anterior horn cell loss. We compare these unusual...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.41.10.1689

    authors: Coleman RJ,Ingram DA

    更新日期:1991-10-01 00:00:00

  • Neurologic abnormalities in murderers.

    abstract::Thirty-one individuals awaiting trial or sentencing for murder or undergoing an appeal process requested a neurologic examination through legal counsel. We attempted in each instance to obtain EEG, MRI or CT, and neuropsychological testing. Neurologic examination revealed evidence of "frontal" dysfunction in 20 (64.5%...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.45.9.1641

    authors: Blake PY,Pincus JH,Buckner C

    更新日期:1995-09-01 00:00:00

  • Summary of evidence-based guideline: complementary and alternative medicine in multiple sclerosis: report of the guideline development subcommittee of the American Academy of Neurology.

    abstract:OBJECTIVE:To develop evidence-based recommendations for complementary and alternative medicine (CAM) in multiple sclerosis (MS). METHODS:We searched the literature (1970-March 2011; March 2011-September 2013 MEDLINE search), classified articles, and linked recommendations to evidence. RESULTS AND RECOMMENDATIONS:Clin...

    journal_title:Neurology

    pub_type: 杂志文章,meta分析

    doi:10.1212/WNL.0000000000000250

    authors: Yadav V,Bever C Jr,Bowen J,Bowling A,Weinstock-Guttman B,Cameron M,Bourdette D,Gronseth GS,Narayanaswami P

    更新日期:2014-03-25 00:00:00

  • Lambert-Eaton syndrome IgG inhibits transmitter release via P/Q Ca2+ channels.

    abstract:OBJECTIVE:To determine whether immunoglobulin G (IgG) from patients with Lambert-Eaton myasthenic syndrome (LEMS) decreases action potential–evoked synaptic vesicle exocytosis,and whether the effect is mediated by P/Q-type voltage-gated calcium channels (VGCCs). METHODS:IgG was obtained from 4 patients with LEMS (3 ma...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/WNL.0000000000001225

    authors: Spillane J,Ermolyuk Y,Cano-Jaimez M,Lang B,Vincent A,Volynski KE,Kullmann DM

    更新日期:2015-02-10 00:00:00

  • Melioidosis and bilateral third-nerve palsies.

    abstract::Central nervous system involvement in melioidosis is unusual. We describe a 34-year-old man who developed a Pseudomonas pseudomallei meningitis, manifested as bilateral third-nerve palsies, 13 years after having been in southeast Asia. Diagnosis was established by a fourfold rise in the serum antibody titer for the ba...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.34.1.105

    authors: Beck RW,Janssen RS,Smiley ML,Schatz NJ,Savino PJ,Rubin DH

    更新日期:1984-01-01 00:00:00

  • A randomized crossover study of bee sting therapy for multiple sclerosis.

    abstract:BACKGROUND:Bee sting therapy is increasingly used to treat patients with multiple sclerosis (MS) in the belief that it can stabilize or ameliorate the disease. However, there are no clinical studies to justify its use. METHODS:In a randomized, crossover study, we assigned 26 patients with relapsing-remitting or relaps...

    journal_title:Neurology

    pub_type: 杂志文章,随机对照试验

    doi:10.1212/01.wnl.0000184442.02551.4b

    authors: Wesselius T,Heersema DJ,Mostert JP,Heerings M,Admiraal-Behloul F,Talebian A,van Buchem MA,De Keyser J

    更新日期:2005-12-13 00:00:00

  • Depressive symptoms and white matter dysfunction in retired NFL players with concussion history.

    abstract:OBJECTIVE:To determine whether correlates of white matter integrity can provide general as well as specific insight into the chronic effects of head injury coupled with depression symptom expression in professional football players. METHOD:We studied 26 retired National Football League (NFL) athletes who underwent dif...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/WNL.0b013e318299ccf8

    authors: Strain J,Didehbani N,Cullum CM,Mansinghani S,Conover H,Kraut MA,Hart J Jr,Womack KB

    更新日期:2013-07-02 00:00:00

  • Correlations of nuclear magnetic resonance imaging, computerized tomography, and clinical profiles in multiple sclerosis.

    abstract::Nuclear magnetic resonance (NMR) imaging was superior to CT for imaging the brain lesions of 27 patients with MS. The incidence of abnormal examinations was 78% by NMR and 63% by CT. In cases in which both studies were abnormal, NMR usually demonstrated many more lesions and more extensive involvement than CT. The app...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.36.1.27

    authors: Jacobs L,Kinkel WR,Polachini I,Kinkel RP

    更新日期:1986-01-01 00:00:00

  • Significance of circadian rhythms in severely brain-injured patients: A clue to consciousness?

    abstract:OBJECTIVE:To investigate the relationship between the presence of a circadian body temperature rhythm and behaviorally assessed consciousness levels in patients with disorders of consciousness (DOC; i.e., vegetative state/unresponsive wakefulness syndrome or minimally conscious state). METHODS:In a cross-sectional stu...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/WNL.0000000000003942

    authors: Blume C,Lechinger J,Santhi N,del Giudice R,Gnjezda MT,Pichler G,Scarpatetti M,Donis J,Michitsch G,Schabus M

    更新日期:2017-05-16 00:00:00

  • Obstacles in the diagnosis and treatment of syphilitic amyotrophy.

    abstract::The authors describe a case of syphilitic amyotrophy in a 37-year-old man presenting with subacute progressive painless weakness in the right arm. Syphilitic amyotrophy is still an existing differential diagnosis of painless and progressive weakness. The authors explore potential obstacles in the diagnostic workup and...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000046584.72672.d3

    authors: Etgen T,Bischoff C,Resch M,Winbeck K,Conrad B,Sander D

    更新日期:2003-02-11 00:00:00

  • Changes in the ascertainment of multiple sclerosis.

    abstract:OBJECTIVE:With diagnostic criteria alterations, increased MRI availability, and awareness of therapies, temporal changes in incidence and prevalence rates may occur, with an increase in the proportion of mildly affected persons diagnosed with multiple sclerosis (MS). The authors assessed temporal trends in the delay fr...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000178891.20579.64

    authors: Marrie RA,Cutter G,Tyry T,Hadjimichael O,Campagnolo D,Vollmer T

    更新日期:2005-10-11 00:00:00

  • Undetermined stroke genesis and hidden cardiomyopathies determined by cardiac magnetic resonance.

    abstract:OBJECTIVE:To determine whether cardiac magnetic resonance imaging (CMR) could be useful in identifying previously undiagnosed cardiomyopathies in a cohort of patients with ischemic stroke who underwent standard etiologic investigation and to describe the type and frequency of these cardiomyopathies. METHODS:We perform...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/WNL.0000000000008698

    authors: Fonseca AC,Marto JP,Pimenta D,Guimarães T,Alves PN,Inácio N,Viana-Baptista M,Pinho E Melo T,Pinto FJ,Ferro JM,Almeida AG

    更新日期:2020-01-07 00:00:00

  • Manganese intoxication in the rhesus monkey: a clinical, imaging, pathologic, and biochemical study.

    abstract::We gave three adult rhesus monkeys seven IV injections of manganese chloride at approximately 1-week intervals. We evaluated neurologic status by serial clinical examinations and performed a levodopa test if the animal developed features of basal ganglia dysfunction. After the animals were killed, we performed neuropa...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.46.2.492

    authors: Olanow CW,Good PF,Shinotoh H,Hewitt KA,Vingerhoets F,Snow BJ,Beal MF,Calne DB,Perl DP

    更新日期:1996-02-01 00:00:00

  • Primary lateral sclerosis as a phenotypic manifestation of familial ALS.

    abstract::Primary lateral sclerosis (PLS) is a diagnosis of exclusion in patients with progressive spinobulbar spasticity and could be part of the clinical spectrum of ALS. Unlike ALS, which is familial in 5 to 10% of the cases, PLS has been described as a sporadic disorder in adults. The authors report two patients with PLS fr...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.WNL.0000162033.47893.F7

    authors: Brugman F,Wokke JH,Vianney de Jong JM,Franssen H,Faber CG,Van den Berg LH

    更新日期:2005-05-24 00:00:00

  • Temporal lobe central benzodiazepine binding in unilateral mesial temporal lobe epilepsy.

    abstract::PET-demonstrated decreases in [11C]flumazenil binding occur in anterior mesial temporal structures on the side of epileptogenesis in unilateral mesial temporal lobe epilepsy. We performed quantitative autoradiography on anterior mesial and lateral temporal specimens from 11 subjects with unilateral mesial temporal lob...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.45.5.934

    authors: Burdette DE,Sakurai SY,Henry TR,Ross DA,Pennell PB,Frey KA,Sackellares JC,Albin RL

    更新日期:1995-05-01 00:00:00

  • EEG predicts surgical outcome in lesional frontal lobe epilepsy.

    abstract:BACKGROUND:Because of the relatively poor results of frontal lobe epilepsy (FLE) surgery, identification of prognostic factors for surgical outcome is of great importance. METHODS:To identify predictive factors for FLE surgery, we analyzed the data of 61 patients (mean age at surgery 19.2) who had undergone presurgica...

    journal_title:Neurology

    pub_type: 临床试验,杂志文章

    doi:10.1212/wnl.54.7.1470

    authors: Janszky J,Jokeit H,Schulz R,Hoppe M,Ebner A

    更新日期:2000-04-11 00:00:00

  • Clinical features and pathogenesis of intracerebral hemorrhage after rt-PA and heparin therapy for acute myocardial infarction: the Thrombolysis in Myocardial Infarction (TIMI) II Pilot and Randomized Clinical Trial combined experience.

    abstract::Parenchymatous intracerebral hemorrhage (ICH) is a serious, infrequent complication of thrombolytic therapy for acute myocardial infarction. We studied the clinical and radiologic features, manner of presentation, associated factors, and temporal course in 23 patients with ICH associated with 150 mg or 100 mg recombin...

    journal_title:Neurology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1212/wnl.45.4.649

    authors: Sloan MA,Price TR,Petito CK,Randall AM,Solomon RE,Terrin ML,Gore J,Collen D,Kleiman N,Feit F

    更新日期:1995-04-01 00:00:00

  • Functional paralysis of horizontal gaze.

    abstract::A 52-year-old steelworker displayed a consistent defect in leftward voluntary gaze across the midline. Both fast (saccadic) and slow (pursuit) eye movements were affected. Neuro-ophthalmologic evaluation revealed no additional neurologic or ophthalmologic deficit. Pupilary miosis occurred during leftward gaze attempt,...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.29.1.82

    authors: Troost BT,Troost EG

    更新日期:1979-01-01 00:00:00

  • Effects of 3-OM-dopa on monoamine metabolism in rat brain.

    abstract::We studied the effects of 3-methoxy, 4-hydroxy-phenylalanine (3-OM-dopa) on monoamine turnover, L-3-4-dihydroxy-phenylalanine (L-dopa) reversal of catecholamine depletion induced by alpha-methyl-paratyrosine (alpha-MT), and the passage of L-dopa across the blood-brain barrier of the rat brain. 3-OM-dopa did not affect...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/wnl.33.3.278

    authors: Gervas JJ,Muradás V,Bazán E,Aguado EG,de Yébenes JG

    更新日期:1983-03-01 00:00:00

  • Treatment of sporadic inclusion body myositis with bimagrumab.

    abstract:OBJECTIVE:To study activin signaling and its blockade in sporadic inclusion body myositis (sIBM) through translational studies and a randomized controlled trial. METHODS:We measured transforming growth factor β signaling by SMAD2/3 phosphorylation in muscle biopsies of 50 patients with neuromuscular disease (17 with s...

    journal_title:Neurology

    pub_type: 杂志文章,随机对照试验

    doi:10.1212/WNL.0000000000001070

    authors: Amato AA,Sivakumar K,Goyal N,David WS,Salajegheh M,Praestgaard J,Lach-Trifilieff E,Trendelenburg AU,Laurent D,Glass DJ,Roubenoff R,Tseng BS,Greenberg SA

    更新日期:2014-12-09 00:00:00

  • Parkinsonian signs in subjects with mild cognitive impairment.

    abstract:BACKGROUND:Parkinsonian signs such as gait disturbance, rigidity, bradykinesia, and tremor are common among individuals with dementia and are associated with negative outcomes, but little is known about parkinsonian signs among individuals with mild cognitive impairment (MCI). OBJECTIVE:To examine the extent to which ...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000188878.81385.73

    authors: Boyle PA,Wilson RS,Aggarwal NT,Arvanitakis Z,Kelly J,Bienias JL,Bennett DA

    更新日期:2005-12-27 00:00:00

  • Verbal and visuospatial deficits in dementia with Lewy bodies.

    abstract:OBJECTIVE:To investigate the cognitive decline in dementia with Lewy bodies (DLBs) and characterize the contribution of Lewy bodies (LBs) to cognitive impairment in the presence of concurrent Alzheimer disease (AD). METHODS:Cognitive deficits and rates of progression attributable to DLB and AD neuropathology were inve...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/01.wnl.0000180964.60708.c2

    authors: Johnson DK,Morris JC,Galvin JE

    更新日期:2005-10-25 00:00:00

  • Computerized visual field defects in posterior cortical atrophy.

    abstract:BACKGROUND AND OBJECTIVE:Posterior cortical atrophy (PCA) is a progressive neurodegenerative syndrome that presents with cortical visual dysfunction and relatively preserved memory. Although higher cortical visual syndromes are well known in PCA, visual field defects detected by computerized visual field (CVF) perimetr...

    journal_title:Neurology

    pub_type: 杂志文章

    doi:10.1212/WNL.0b013e31823e9f2a

    authors: Pelak VS,Smyth SF,Boyer PJ,Filley CM

    更新日期:2011-12-13 00:00:00