Abstract:
:The seemingly unpredictable response to levodopa in patients with Parkinson's disease can be understood as an interaction between several distinct pharmacological effects of levodopa. The most important are a short-duration response with a half-life of minutes to hours and a long-duration response with a half-life of days, superimposed on diurnal motor variation. A negative response characterized by brief worsening before and after the short-duration response and dyskinesia accentuate the short-duration response. These various responses are modified by disease progression and long-term levodopa therapy. Pharmacodynamic modeling of the short-duration response indicates that with time, the response becomes less graded and small changes in levodopa concentrations can produce big changes in response. In this setting, unpredictability arises from the variation in absorption and distribution of levodopa.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Nutt JG,Holford NHdoi
10.1002/ana.410390504subject
Has Abstractpub_date
1996-05-01 00:00:00pages
561-73issue
5eissn
0364-5134issn
1531-8249journal_volume
39pub_type
杂志文章,评审abstract:OBJECTIVE:Low vitamin D status at birth may be associated with risk of adult onset multiple sclerosis, but this link has not been studied directly. We assessed the relation between neonatal vitamin D concentrations, measured in stored blood samples, and risk of multiple sclerosis. METHODS:This was a population-based c...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24210
更新日期:2014-09-01 00:00:00
abstract::Multiple sclerosis (MS) has been associated with HLA-DR2 for more than 20 years, and a large number of studies have addressed the relation between MS and the HLA class II genes, which are our major immune-response genes. This has produced a complex and confusing picture that is difficult to interpret. With the advent ...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.410360706
更新日期:1994-01-01 00:00:00
abstract::The prevalence and titer of serum antibodies to several Epstein-Barr virus (EBV) antigens were compared among patients with multiple sclerosis, healthy siblings of multiple sclerosis patients, patients with other neurological diseases, and healthy non-blood-related subjects. Serum-cerebrospinal fluid (serum-CSF) pairs...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410170412
更新日期:1985-04-01 00:00:00
abstract::Focal cortical myoclonus is rare. Obvious causes include tumor or atrophy involving the motor strip, but in some cases no cause is apparent. We present 4 patients who started to have focal myoclonus in childhood. All had focal motor seizures as well, and one had recurrent focal motor status epilepticus. All 4 had a mi...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410230402
更新日期:1988-04-01 00:00:00
abstract::Intraneural perineuriomas are benign peripheral nerve sheath tumors that cause progressive debilitating focal extremity weakness. The etiology of perineuriomas is largely unknown. We utilized whole exome sequencing, copy number algorithm evaluation, and high-resolution whole genome microarray to investigate for a gene...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24854
更新日期:2017-02-01 00:00:00
abstract:OBJECTIVE:Antiepileptic drugs (AEDs) are important for the treatment of epilepsy, psychiatric diseases, and pain syndromes. Small studies have suggested that AED treatment reduces serum levels of folate and vitamin B12. METHODS:This prospective monocenter study aimed at testing the hypothesis that AED treatment is ass...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.22229
更新日期:2011-02-01 00:00:00
abstract:OBJECTIVE:A study was undertaken to examine the association between overall cardiovascular health as recently defined by the American Heart Association in young adulthood to middle age and cognitive function in midlife. Overall ideal cardiovascular health incorporates 7 metrics, including the avoidance of overweight or...
journal_title:Annals of neurology
pub_type: 杂志文章,多中心研究
doi:10.1002/ana.23836
更新日期:2013-02-01 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::Autopsy examination confirmed the diagnosis of subacute necrotizing encephalomyelopathy (SNE) in a 7-month-old male infant who underwent several metabolic studies before death. Intermittent lactic acidemia and fumaric aciduria, an extreme hyperglycemic response to an intravenous bolus of alanine, and an elevated total...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410060605
更新日期:1979-12-01 00:00:00
abstract::The aim of this study was to evaluate the use of functional magnetic resonance imaging as an alternative to intraoperative electrocortical stimulation mapping for the localization of critical language areas in the temporoparietal region. We investigated several requirements that functional magnetic resonance imaging m...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10117
更新日期:2002-03-01 00:00:00
abstract::The mucopolysaccharidoses are caused by inherited deficiencies of lysosomal enzymes involved in the degradative pathway of glycosaminoglycans. Lysosomal storage leads to cellular and organ dysfunction, including mental retardation. Storage lesions are found throughout the diseased brain, but little is known about the ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10373
更新日期:2002-12-01 00:00:00
abstract::Nineteen patients aged 4 to 44 years with generalized epilepsy and generalized 3 Hz spike-and-wave activity, were monitored for 24 or 36 hours on one to nine occasions to determine the time distribution of ictal and interictal electroencephalographic discharges and the consistency of the time patterns observed. Two pa...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410080506
更新日期:1980-11-01 00:00:00
abstract::Posterior choroidal artery (PChA) territory infarcts remain the least well-known type of thalamic infarcts. Our study of 10 personal cases, selected from 2,925 stroke patients admitted consecutively to a community-based primary care center, and 10 published cases of unilateral PChA territory infarct suggests that they...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410390614
更新日期:1996-06-01 00:00:00
abstract::It has been known for some time that patients with Parkinson's disease (PD) have difficulty executing simultaneous motor acts, yet the pathophysiology underlying this impairment remains uncertain. We examined the possibility that these dual-task deficits stem from defective sensorimotor mechanisms producing interferen...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410310110
更新日期:1992-01-01 00:00:00
abstract::We previously reported that the monoclonal antibody Alz-50 recognizes a protein (A68) with an apparent molecular weight of 68,000 daltons in the brains of patients who died with Alzheimer's disease, but not in brain tissue from individuals free of neurological disease. We now report that substantial quantities of this...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410220412
更新日期:1987-10-01 00:00:00
abstract::The in vivo demyelinating capacity of sera from 27 patients with Guillain-Barré syndrome (GBS) and 47 other individuals was studied by intraneural injection into rat sciatic nerves. The morphological features of the nerves in cross section taken just proximal to the site of needle insertion was assessed 48 hours after...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410110112
更新日期:1982-01-01 00:00:00
abstract::Two patients with biopsy-proved progressive multifocal leukoencephalopathy (PML) were treated with near-maximal doses of adenine arabinoside (Ara-A), 18.6 and 20 mg per kilogram of body weight per day for 14 days. In both patients, clinical progression of the disease was correlated with an increase in the size of low-...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410010509
更新日期:1977-05-01 00:00:00
abstract::To investigate the potential role of drug therapy in preventing or exacerbating seizure-related brain injury in the prepubescent brain, we administered kainic acid to rats at postnatal day 35. Therapy with daily phenobarbital was started directly before or 1 day after kainic acid was administered, and was continued th...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410360314
更新日期:1994-09-01 00:00:00
abstract::We measured neurotransmitter markers in autopsied brain of infants with glycine encephalopathy (GE). Because patients with GE develop intractable seizures, special attention was devoted to those neurotransmitter systems implicated in human epilepsy. Mean levels of glycine in the frontal cortex of GE patients were thre...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410240319
更新日期:1988-09-01 00:00:00
abstract::We recently reported that systemic administration of a proteasome inhibitor induced a progressive levodopa-responsive, bradykinetic syndrome in rats with imaging, pathological, and biochemical features that strikingly resemble what is found in PD. This model has the potential to be a useful tool for studying the mecha...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20936
更新日期:2006-08-01 00:00:00
abstract::N-acetylaspartate (NAA) contributes to the most prominent signal in proton magnetic resonance spectroscopy (1H-MRS) of the adult human brain. We report the absence of NAA in the brain of a 3-year-old child with neurodevelopmental retardation and moderately delayed myelination. Since normal concentration of NAA in body...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:
更新日期:2001-04-01 00:00:00
abstract:OBJECTIVE:We tested the premise that cholinesterase inhibitor therapy should target butyrylcholinesterase (BuChE) in Alzheimer's disease (AD), not acetylcholinesterase (AChE) alone, because both enzymes hydrolyze acetylcholine, and BuChE is increased in AD cerebral cortex. METHODS:To examine this issue in vivo, we qua...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20672
更新日期:2006-01-01 00:00:00
abstract:OBJECTIVE:This study was untaken to investigate the association of micro brain infarcts (MBIs) with antemortem global cognitive function (CF), and whether brain weight (BW) and Alzheimer lesions (neurofibrillary tangles [NFTs] or neuritic plaques [NPs]) mediate the association. METHODS:Subjects were 436 well-character...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.22520
更新日期:2011-11-01 00:00:00
abstract::Analysis of the pathophysiology of hypokalemic paralysis, as it occurs in barium poisoning, chronic potassium deficiency, and thyrotoxicosis, suggests that these disorders may have a similar mechanism. An increased ratio of muscle sodium permeability to potassium permeability reduces the ionic diffusion potential, whi...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410110602
更新日期:1982-06-01 00:00:00
abstract::To understand the pathogenesis of human immunodeficiency virus-induced neuropathology, it is critical to know the dynamics of viral replication in the central nervous system. Viral decay kinetics were mathematically analyzed from multiple serial specimens of ventricular cerebrospinal fluid and plasma during antiretrov...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Dopa-responsive dystonia (DRD) is one form of childhood-onset idiopathic torsion dystonia. Adult-onset parkinsonism has appeared in several previously unaffected members in families with DRD suggesting that this may be an additional phenotypical expression of the disease. We report a family with DRD in which 2 women a...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410320502
更新日期:1992-11-01 00:00:00
abstract::A recent observation has shown that a common polymorphism in the alpha1-antichymotrypsin (ACT) gene modifies the apolipoprotein E (ApoE) epsilon4-associated Alzheimer's disease (AD) risk identifying the combination of the ACT/AA and ApoE epsilon4/epsilon4 genotypes as a potential susceptibility marker for AD. We analy...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410400420
更新日期:1996-10-01 00:00:00
abstract::A young woman with Kearns-Sayre syndrome and progressive central nervous system deterioration over 15 years had decreased plasma and cerebrospinal fluid folate levels while receiving phenytoin for a seizure disorder. A muscle biopsy showed a "ragged red fiber" myopathy with reduced muscle carnitine and mitochondrial e...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410130620
更新日期:1983-06-01 00:00:00
abstract::Ten patients with sporadic olivopontocerebellar atrophy and autonomic failure were studied with positron emission tomography. Subjects underwent both an [11C]diprenorphine and an [18F]fluorodopa scan. The mean caudate-occipital uptake ratio for [11C]diprenorphine was significantly reduced to 88% and the putamen-occipi...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410370505
更新日期:1995-05-01 00:00:00
abstract::Changes in endoneurial fluid pressure (EFP) and morphology were studied in rat sciatic nerves frozen for 60 seconds with a cryoprobe designed for human cryoanalgesia. The onset of increased EFP was rapid, and a peak of 23 cm H2O was reached within 90 minutes after injury. EFP levels returned to normal 32 days after fr...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410100512
更新日期:1981-11-01 00:00:00