Archives of neurology最新文献

{"title":"Effects of growth hormone–releasing hormone on cognitive function in adults with mild cognitive impairment and healthy older adults: results of a controlled trial.","authors":"Laura D Baker,&nbsp;Suzanne M Barsness,&nbsp;Soo Borson,&nbsp;George R Merriam,&nbsp;Seth D Friedman,&nbsp;Suzanne Craft,&nbsp;Michael V Vitiello","doi":"10.1001/archneurol.2012.1970","DOIUrl":"https://doi.org/10.1001/archneurol.2012.1970","url":null,"abstract":"<p><strong>Background: </strong>Growth hormone–releasing hormone(GHRH), growth hormone, and insulin like growth factor 1 have potent effects on brain function, their levels decrease with advancing age, and they likely play a role in the pathogenesis of Alzheimer disease. Previously, we reported favorable cognitive effects of short-term GHRH administration in healthy older adults and provided preliminary evidence to suggest a similar benefit in adults with mild cognitive impairment (MCI).</p><p><strong>Objective: </strong>To examine the effects of GHRH on cognitive function in healthy older adults and in adults with MCI.</p><p><strong>Design: </strong>Randomized,double-blind,placebo-controlled trial.</p><p><strong>Setting: </strong>Clinical Research Center, University of Washington School of Medicine in Seattle.</p><p><strong>Participants: </strong>A total of 152 adults (66 with MCI) ranging in age from 55 to 87 years (mean age, 68 years); 137 adults (76 healthy participants and 61 participants with MCI) successfully completed the study.</p><p><strong>Intervention: </strong>Participants self-administered daily subcutaneous injections of tesamorelin (Theratechnologies Inc),a stabilized analog of human GHRH (1 mg/d), or placebo 30 minutes before bedtime for 20 weeks. At baseline, at weeks 10 and 20 of treatment, and after a 10-week washout(week 30), blood samples were collected, and parallel versions of a cognitive battery were administered. Before and after the 20-week intervention, participants completed an oral glucose tolerance test and a dual-energy x-ray absorptiometry scan to measure body composition.</p><p><strong>Main outcome measures: </strong>Primary cognitive outcomes were analyzed using analysis of variance and included 3 composites reflecting executive function, verbal memory, and visual memory. Executive function was assessed with Stroop Color-Word Interference,Task Switching, the Self-Ordered Pointing Test, and Word Fluency, verbal memory was assessed with Story Recall and the Hopkins Verbal Learning Test,and visual memory was assessed with the Visual-Spatial Learning Test and Delayed Match-to-Sample.</p><p><strong>Results: </strong>The intent-to-treat analysis indicated a favorable effect of GHRH on cognition (P=.03), which was comparable in adults with MCI and healthy older adults.The completer analysis showed a similar pattern, with a more robust GHRH effect (P=.002). Subsequent analyses indicated a positive GHRH effect on executive function (P=.005) and a trend showing a similar treatment-related benefit in verbal memory(P=.08). Treatment with GHRH increased insulin like growth factor 1 levels by 117 %(P.001), which remained within the physiological range, and reduced percent body fat by 7.4%(P.001). Treatment with GHRH increased fasting insulin levels within the normal range by 35%in adults with MCI (P.001) but not in healthy adults. Adverse events were mild and were reported by 68%of GHRH treated adults and 36% of those who rec","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.1970","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30816430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Memoriam: Robert J. Joynt, MD, PhD (1925-2012).","authors":"Ira Shoulson","doi":"10.1001/archneurol.2012.2265","DOIUrl":"https://doi.org/10.1001/archneurol.2012.2265","url":null,"abstract":"O n his way to neurology grand rounds, Robert (Bob) Joynt, MD, PhD, died suddenly on April 13, 2012, at the age of 86 years in Rochester, New York. He is survived by his wife, Margaret; their 6 children Robert, Patricia, Mary, Anne, Thomas, and Kathleen and their spouses; and 9 grandchildren. Joynt was chief editor of the Archives of Neurology (1982-1997); a trifecta president of the American Academy of Neurology (1977-1979), American Board of Psychiatry and Neurology (1979), and the American Neurological Association (1987-1988); and dean of the School of Medicine and Dentistry and the first vice president and vice provost of the University of Rochester (UR) Medical Center (1985-1994). He was also elected a member of the Institute of Medicine of the National Academy of Sciences (1989) and was honored by the UR as a Distinguished University Professor (1997) and the installation of the Robert J. Joynt Professorship in Experimental Therapeutics in Neurology (2011). The title of Distinguished University Professor is conferred only to a handful of individuals who have made substantial and varied contributions to their own scholarly field and to the university during the course of many years. Joynt was born the youngest of 4 children in Le Mars, Iowa. His father was a dentist and an active Democrat in an overwhelmingly Republican area. After high school, Joynt served as a staff sergeant and radio operator in the US Army Signal Corps, tracking troop movements in India (1946). He graduated from Westmar College (1949) and went on to receive his medical degree from the University of Iowa (1952), where he was first in his class. He interned at the Royal Victoria Hospital in Montreal (1952-1953) and was a Fulbright Scholar at Cambridge University (1953-1954), where he developed an interest in hypothalamic neurophysiology before returning to the University of Iowa to complete a neurology residency (1957). In 1953, Joynt married the extraordinary Margaret McGivern, who would become a gifted and devoted family attorney and judge. This remarkable duo parented 6 children, who have also enjoyed successful careers and remarkable achievements. Joynt’s nascent interests in neurology and research at the University of Iowa were inspired by his teachers Adolph Sahs, a distinguished neurologist, and Arthur Benton, an innovative neuropsychologist. Both Sahs and Benton recognized Joynt’s skills, encouraged his graduate work on hypothalamic water regulation and the osmoreceptor, and served as research mentors and coauthors of early scholarly publications (eg, Neurology.1956;6:791-803 and Arch Neurol.1960;3:205221). He received his PhD in anatomy in 1963 from the University of Iowa. Word began to spread through academic neurology circles about the talented rookie who had farranging expertise from electroencephalography to meningitis and interests from osmoreceptors to public policy. George Engel, the father of the biopsychosocial model of medicine and chair of the neurology ","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.2265","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31588886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Awaji criteria for the diagnosis of amyotrophic lateral sclerosis:a systematic review.","authors":"João Costa,&nbsp;Michael Swash,&nbsp;Mamede de Carvalho","doi":"10.1001/archneurol.2012.254","DOIUrl":"https://doi.org/10.1001/archneurol.2012.254","url":null,"abstract":"<p><strong>Objective: </strong>To estimate the potential diagnostic added value of the Awaji criteria for diagnosis of a myotrophiclateral sclerosis (ALS), which have been compared with the previously accepted gold standard the revised El Escorial criteria in several studies.</p><p><strong>Data sources: </strong>MEDLINE and Web of Science (until October2011).</p><p><strong>Study selection: </strong>We searched for studies testing the diagnostic accuracy of the Awaji criteria vs the revised El Escorial criteria in patients referred with suspected ALS.</p><p><strong>Data extraction: </strong>Evaluation and data extraction of identified studies were done independently. The Quality Assessment of Diagnostic Accuracy Studies list was used to assess study quality. We determined the proportion of patients classified as having probable/definite ALS and derived indices of diagnostic performance(sensitivity, specificity, and diagnostic odds ratio). Quantitative data synthesis was accomplished through random-effects meta-analysis, and heterogeneity was assessed with the I2 test.</p><p><strong>Data synthesis: </strong>Eight studies were included (3 prospective and 5 retrospective) enrolling 1187 patients. Application of Awaji criteria led to a 23% (95% CI, 12% to 33%; I2=84%) increase in the proportion of patients classified as having probable/definite ALS. Diagnostic performance of the Awaji criteria was higher than the revised El Escorial criteria (pooled sensitivity: 81.1% [95%CI, 72.2% to 90.0%; I2=91%] vs 62.2% [95% CI, 49.4%to 75.1%; I2=93%]; pooled diagnostic odds ratio, 35.8[95% CI, 15.2 to 84.7; I2=3%] vs 8.7 [95% CI, 2.2 to 35.6;I2=50%]). Diagnostic accuracy of Awaji criteria was higher in bulbar- than in limb-onset cases.</p><p><strong>Conclusion: </strong>The Awaji criteria have a significant clinical impact allowing earlier diagnosis and clinical trial entry in ALS.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.254","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30833553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative pilomotor axon reflex test: a novel test of pilomotor function.","authors":"Timo Siepmann,&nbsp;Christopher H Gibbons,&nbsp;Ben M Illigens,&nbsp;Jacob A Lafo,&nbsp;Christopher M Brown,&nbsp;Roy Freeman","doi":"10.1001/archneurol.2012.1092","DOIUrl":"https://doi.org/10.1001/archneurol.2012.1092","url":null,"abstract":"<p><strong>Background: </strong>Cutaneous autonomic function can be quantified by the assessment of sudomotor and vasomotor responses. Although piloerector muscles are innervated by the sympathetic nervous system, there are at present no methods to quantify pilomotor function.</p><p><strong>Objective: </strong>To quantify piloerection using phenylephrine hydrochloride in humans.</p><p><strong>Design: </strong>Pilot study.</p><p><strong>Setting: </strong>Hospital-based study.</p><p><strong>Participants: </strong>Twenty-two healthy volunteers (18 males,4 females) aged 24 to 48 years participated in 6 studies.</p><p><strong>Interventions: </strong>Piloerection was stimulated by iontophoresis of 1% phenylephrine. Silicone impressions of piloerection were quantified by number and area. The direct and indirect responses to phenylephrine iontophoresis were compared on both forearms after pre treatment to topical and subcutaneous lidocaine and iontophoresis of normal saline.</p><p><strong>Results: </strong>Iontophoresis of phenylephrine induced piloerection in both the direct and axon reflex–mediated regions, with similar responses in both arms. Topical lidocaine blocked axon reflex–mediated piloerection post-iontophoresis (mean [SD], 66.6 [19.2] for control impressions vs 7.2 [4.3] for lidocaine impressions;P.001). Subcutaneous lidocaine completely blocked piloerection.The area of axon reflex–mediated piloerection was also attenuated in the lidocaine-treated region postiontophoresis (mean [SD], 46.2 [16.1]cm2 vs 7.2 [3.9]cm2; P.001). Piloerection was delayed in the axon reflex region compared with the direct region. Normal saline did not cause piloerection.</p><p><strong>Conclusions: </strong>Phenylephrine provoked piloerection directly and indirectly through an axon reflex–mediated response that is attenuated by lidocaine. Piloerection is not stimulated by iontophoresis of normal saline alone.The quantitative pilomotor axon reflex test (QPART) may complement other measures of cutaneous autonomic nerve fiber function.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.1092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30815924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acute unilateral hearing loss as an early symptom of lateral cerebral sinus venous thrombosis.","authors":"Thomas Gattringer,&nbsp;Christian Enzinger,&nbsp;Armin Birner,&nbsp;Gerit Wünsch,&nbsp;Kurt Niederkorn,&nbsp;Christian Walch,&nbsp;Franz Fazekas","doi":"10.1001/archneurol.2012.346","DOIUrl":"https://doi.org/10.1001/archneurol.2012.346","url":null,"abstract":"<p><strong>Background: </strong>Increasing availability of neuroimaging has facilitated the diagnosis of cerebral sinus venous thrombosis(CSVT). However, CSVT may also present with unspecific or atypical symptoms, resulting in diagnostic delay.Single reports suggested otologic symptoms as such pitfalls.</p><p><strong>Objective: </strong>To screen patients with CSVT for otologic symptoms.</p><p><strong>Design: </strong>Ten-year retrospective case series.</p><p><strong>Setting: </strong>Primary and tertiary care university clinic.</p><p><strong>Patients: </strong>Thirty-eight patients with CSVT.</p><p><strong>Results: </strong>Of 38 patients with CSVT, 3 individuals hadacute unilateral hearing loss, 2 of which also had concomitant tinnitus and headache, and were initially treated at the ear, nose, and throat department. Magnetic resonance imaging after hospital discharge showed ipsilateral thrombosis of the lateral venous sinus. Two female patients took oral contraceptives, 1 of whom also had a heterozygous factor V Leiden mutation.</p><p><strong>Conclusions: </strong>Cerebral sinus venous thrombosis may present with unspecific symptoms such as acute unilateral hearing loss. If in conjunction with headache or risk factors for venous thrombosis, the suspicion of ipsilateral lateral CSVT should prompt rapid imaging including venography.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30816447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psychogenic nonepileptic seizures: time to abandon the term pseudoseizures.","authors":"Shane O'Hanlon,&nbsp;Richard Liston,&nbsp;Norman Delanty","doi":"10.1001/archneurol.2012.829","DOIUrl":"https://doi.org/10.1001/archneurol.2012.829","url":null,"abstract":"","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.829","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30960393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Slowly progressive ataxia, neuropathy, and oculomotor dysfunction.","authors":"Justin T Jordan, Gincy Samuel, Steven Vernino, Srikanth Muppidi","doi":"10.1001/archneurol.2012.2356","DOIUrl":"10.1001/archneurol.2012.2356","url":null,"abstract":"<p><p>A 54-year-old white man presented with slowly progressive incoordination and weakness. He had normal motor development until, at 16 years of age, he noted difficulty walking and difficulty reading despite normal visual acuity. By the fourth decade of life, he developed poor coordination and balance, as well as inability to walk. In subsequent years, he developed progressive, painless sensory loss, weakness, and atrophy in his distal arms and legs. His vision problems progressed and he also developed dysarthria without dysphagia. Family history was negative except for an uncle who was described as \"clumsy.\" Results of an oculomotor examination were notable for increased square-wave jerks, persistent bilateral gaze-evoked nystagmus with saccadic pursuit, intact vestibulo-ocular reflex, and saccadic dysmetria. He had a mixed dysarthria with flaccid and ataxic characteristics and severe weakness and atrophy in the distal limb muscles. Sensation was diminished to the midforearms and midthighs in all modalities. Deep tendon reflexes were absent throughout, with no response to plantar stimulation. He had marked appendicular ataxia with mild axial ataxia. Magnetic resonance imaging of the brain revealed severe cerebellar atrophy. Results of an electrodiagnostic study suggested a severe axonal sensorimotor polyneuropathy with active and chronic denervation. The differential diagnosis in a patient with ataxia, neuropathy, and oculomotor features is discussed; a methodical approach to the diagnostic workup is suggested; and the final diagnosis is revealed.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.2356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30960395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive search for Alzheimer disease susceptibility loci in the APOE region.","authors":"Gyungah Jun,&nbsp;Badri N Vardarajan,&nbsp;Jacqueline Buros,&nbsp;Chang-En Yu,&nbsp;Michele V Hawk,&nbsp;Beth A Dombroski,&nbsp;Paul K Crane,&nbsp;Eric B Larson,&nbsp;Richard Mayeux,&nbsp;Jonathan L Haines,&nbsp;Kathryn L Lunetta,&nbsp;Margaret A Pericak-Vance,&nbsp;Gerard D Schellenberg,&nbsp;Lindsay A Farrer","doi":"10.1001/archneurol.2012.2052","DOIUrl":"https://doi.org/10.1001/archneurol.2012.2052","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the association of risk and age at onset (AAO) of Alzheimer disease (AD) with single-nucleotide polymorphisms (SNPs) in the chromosome 19 region including apolipoprotein E (APOE) and a repeat-length polymorphism in TOMM40 (poly-T, rs10524523).</p><p><strong>Design: </strong>Conditional logistic regression models and survival analysis.</p><p><strong>Setting: </strong>Fifteen genome-wide association study data sets assembled by the Alzheimer's Disease Genetics Consortium.</p><p><strong>Participants: </strong>Eleven thousand eight hundred forty AD cases and 10 931 cognitively normal elderly controls.</p><p><strong>Main outcome measures: </strong>Association of AD risk and AAO with genotyped and imputed SNPs located in an 800-Mb region including APOE in the entire Alzheimer's Disease Genetics Consortium data set and with the TOMM40 poly-T marker genotyped in a subset of 1256 cases and 1605 controls.</p><p><strong>Results: </strong>In models adjusting for APOE ε4, no SNPs in the entire region were significantly associated with AAO at P.001. Rs10524523 was not significantly associated with AD or AAO in models adjusting for APOE genotype or within the subset of ε3/ε3 subjects.</p><p><strong>Conclusions: </strong>APOE alleles ε2, ε3, and ε4 account for essentially all the inherited risk of AD associated with this region. Other variants including a poly-T track in TOMM40 are not independent risk or AAO loci.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.2052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9977474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fingolimod impedes Schwann cell-mediated myelination: implications for the treatment of immune neuropathies?","authors":"Angelika Köhne,&nbsp;Mark Stettner,&nbsp;Parastoo Jangouk,&nbsp;Thomas Dehmel,&nbsp;Hans-Peter Hartung,&nbsp;Helmar C Lehmann,&nbsp;Bernd C Kieseier","doi":"10.1001/archneurol.2012.394","DOIUrl":"https://doi.org/10.1001/archneurol.2012.394","url":null,"abstract":"<p><strong>Background: </strong>Fingolimod (FTY720), a first-in-class sphingosine-1-phosphate (S1P) receptor agonist, is a recently approved drug for treating relapsing multiple sclerosis. Experimental evidence suggests that FTY720 not only exhibits anti-inflammatory properties but also promotes myelination in the central nervous system by direct interaction with oligodendrocytes.</p><p><strong>Objective: </strong>To assess the effects of FTY720 on Schwann cells (SCs) and peripheral nerve myelination.</p><p><strong>Design: </strong>Receptor expression studies and myelination were investigated in primary rat SCs and rat neuronal/SC cocultures. Cells were treated with physiologically relevant concentrations of the active phosphorylated form of FTY720 (FTY720P). In addition, S1P receptor expression was corroborated in human and rat peripheral nerve tissue sections.</p><p><strong>Results: </strong>Schwann cells express all known S1P receptors on the RNA level, not altered by FTY720P. In the myelination model, treatment with FTY720P resulted in a significant reduction of quantitative myelin formation. FTY720P induced reactive oxygen species in SCs associated with apoptosis of these cells, as demonstrated by the detection of cysteine aspartic acid–specific protease 3 and 7, as well as terminal deoxynucleotidyl transferase dUTP nick-end labeling. This effect was dependent of S1P signaling because the blocking of S1P receptors ameliorated reactive oxygen species production, SC apoptosis, and myelin loss.</p><p><strong>Conclusions: </strong>FTY720P at greater concentrations induces apoptosis in SCs and may interfere with peripheral nerve myelination.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.394","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30732821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Results of phase 2 safety and feasibility study of treatment with levetiracetam for prevention of posttraumatic epilepsy.","authors":"Pavel Klein,&nbsp;Daniel Herr,&nbsp;Phillip L Pearl,&nbsp;JoAnne Natale,&nbsp;Zachary Levine,&nbsp;Claude Nogay,&nbsp;Fabian Sandoval,&nbsp;Stacey Trzcinski,&nbsp;Shireen M Atabaki,&nbsp;Tammy Tsuchida,&nbsp;John van den Anker,&nbsp;Steven J Soldin,&nbsp;Jianping He,&nbsp;Robert McCarter","doi":"10.1001/archneurol.2012.445","DOIUrl":"https://doi.org/10.1001/archneurol.2012.445","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the safety and tolerability of treatment with levetiracetam and determine the trough levels of levetiracetam in patients with traumatic brain injury (TBI) who are at high risk for posttraumatic epilepsy (PTE).</p><p><strong>Design: </strong>Open-label, nonrandomized phase 2 study with 2 arms comparing levetiracetam treatment vs observation.</p><p><strong>Setting: </strong>Two level 1 trauma centers.</p><p><strong>Patients: </strong>A total of 422 participants 6 years or older with TBI who have a 20% risk for PTE were screened. Of these participants, 205 (48.6%) were eligible. A total of 126 participants were enrolled: 86 adults and 40 children. A total of 66 participants were in the treatment group (46 adults and 20 children), and a total of 60 participants were in the observation group (40 adults and 20 children). Participants presenting within 8 hours after TBI received treatment, and those presenting more than 8 to 24 hours after TBI did not.</p><p><strong>Intervention: </strong>Treatment with levetiracetam (55 mg/kg/d) for 30 days starting within 8 hours after injury.</p><p><strong>Main outcome measures: </strong>Number of adverse events, mood score, number of infections, trough level of levetiracetam, and PTE.</p><p><strong>Results: </strong>Of the 66 participants treated with levetiracetam, 2 (3%) stopped treatment owing to toxicity (somnolence). The most common adverse events were fatigue, headache, and somnolence. Mood scores and number of infections did not differ between the treatment and observation groups. Mean trough levels of levetiracetam on days 2 to 30 ranged from 19.6 to 26.7 μg/mL. At 2 years, 13 of 86 adults (15.1%) and 1 of 40 children (2.5%) developed PTE. At 2 years, 5 of 46 treated adults (10.9%) and 8 of 40 untreated adults (20.0%) developed PTE (relative risk, 0.47; P=.18).</p><p><strong>Conclusion: </strong>Treatment with 55 mg/kg/d of levetiracetam (a dose with an antiepileptogenic effect on animals) for patients with TBI at risk for PTE is safe and well tolerated, with plasma levels similar to those in animal studies. The findings support further evaluation of levetiracetam treatment for the prevention of PTE.</p><p><strong>Trial registration: </strong>clinicaltrials.gov Identifier: NCT01463033.</p>","PeriodicalId":8321,"journal":{"name":"Archives of neurology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1001/archneurol.2012.445","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30748879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}