175 results match your criteria Apraxia and Related Syndromes


Clinical and Molecular Diagnosis of Joubert Syndrome and Related Disorders.

Pediatr Neurol 2020 05 4;106:43-49. Epub 2020 Feb 4.

Department of Pediatric Neurology, Rainbow Children Hospital, Hyderabad, India.

Background: Joubert syndrome and related disorders are a group of ciliopathies characterized by mid-hindbrain malformation, developmental delay, hypotonia, oculomotor apraxia, and breathing abnormalities. Molar tooth sign in brain imaging is the hallmark for diagnosis. Joubert syndrome is a clinically and genetically heterogeneous disorder involving mutations in 35 ciliopathy-related genes. Read More

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http://dx.doi.org/10.1016/j.pediatrneurol.2020.01.012DOI Listing

Alien limb in the corticobasal syndrome: phenomenological characteristics and relationship to apraxia.

J Neurol 2020 Apr 9;267(4):1147-1157. Epub 2020 Jan 9.

Department of Clinical Neurosciences, University of Cambridge, Herchel Smith Building, Cambridge, CB2 0SZ, UK.

Alien limb refers to movements that seem purposeful but are independent of patients' reported intentions. Alien limb often co-occurs with apraxia in the corticobasal syndrome, and anatomical and phenomenological comparisons have led to the suggestion that alien limb and apraxia may be causally related as failures of goal-directed movements. Here, we characterised the nature of alien limb symptoms in patients with the corticobasal syndrome (n = 30) and their relationship to limb apraxia. Read More

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http://dx.doi.org/10.1007/s00415-019-09672-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7109196PMC

The molecular genetics of Joubert syndrome and related ciliopathies: The challenges of genetic and phenotypic heterogeneity.

Authors:
Melissa A Parisi

Transl Sci Rare Dis 2019 Jul 4;4(1-2):25-49. Epub 2019 Jul 4.

Chief, Intellectual & Developmental Disabilities Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, USA.

Joubert syndrome (JS; MIM PS213300) is a rare, typically autosomal recessive disorder characterized by cerebellar vermis hypoplasia and a distinctive malformation of the cerebellum and brainstem identified as the "molar tooth sign" on brain MRI. Other universal features include hypotonia with later ataxia and intellectual disability/developmental delay, with additional features consisting of oculomotor apraxia and abnormal respiratory pattern. Notably, other, more variable features include renal cystic disease, typically nephronophthisis, retinal dystrophy, and congenital hepatic fibrosis; skeletal changes such as polydactyly and findings consistent with short-rib skeletal dysplasias are also seen in many subjects. Read More

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http://dx.doi.org/10.3233/TRD-190041DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864416PMC

The NuRD complex and macrocephaly associated neurodevelopmental disorders.

Am J Med Genet C Semin Med Genet 2019 12 18;181(4):548-556. Epub 2019 Nov 18.

School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia.

The nucleosome remodeling and deacetylase (NuRD) complex is a major regulator of gene expression involved in pluripotency, lineage commitment, and corticogenesis. This important complex is composed of seven different proteins, with mutations in CHD3, CHD4, and GATAD2B being associated with neurodevelopmental disorders presenting with macrocephaly and intellectual disability similar to other overgrowth and intellectual disability (OGID) syndromes. Pathogenic variants in CHD3 and CHD4 primarily involve disruption of enzymatic function. Read More

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http://dx.doi.org/10.1002/ajmg.c.31752DOI Listing
December 2019

Zebrafish Deficiency Impairs Retinal Patterning and Oculomotor Function.

J Neurosci 2020 01 4;40(1):143-158. Epub 2019 Nov 4.

Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia 30912,

Down syndrome cell adhesion molecules ( and ) are essential regulators of neural circuit assembly, but their roles in vertebrate neural circuit function are still mostly unexplored. We investigated the functional consequences of deficiency in the larval zebrafish (sexually undifferentiated) oculomotor system, where behavior, circuit function, and neuronal activity can be precisely quantified. Genetic perturbation of resulted in deficits in retinal patterning and light adaptation, consistent with its known roles in mammals. Read More

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http://dx.doi.org/10.1523/JNEUROSCI.1783-19.2019DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6939486PMC
January 2020
1 Read

A case report on crossed aphasia in dextrals: Consideration about clinical features and neural network.

Medicine (Baltimore) 2019 Oct;98(43):e17660

Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Centro Neurolesi Bonino Pulejo, Messina, Italy.

Rationale: The term crossed aphasia in dextrals (CAD) describes aphasia following a right hemisphere lesion in right-handed subjects. The diagnostic criteria for CAD, defined on the basis of clinical cases observed over the years, are aphasia; lesion in right hemisphere; strong preference for right hand use without familial history of left handedness; structural integrity of left hemisphere; and absence of brain damage in childhood. The studies of CAD have mainly been focused on the neurobiological mechanisms underlying the functional neurocognitive lateralization and organization of the brain, such as a dissociation between language and handedness, language and praxis, or other cognitive functions. Read More

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http://dx.doi.org/10.1097/MD.0000000000017660DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6824653PMC
October 2019

Apraxia in children and adults with obstructive sleep apnea syndrome.

Sleep 2019 12;42(12)

Division of Orthodontics, University of California San Francisco School of Dentistry, CA.

Study Objectives: Early in life impairment of orofacial growth leads to sleep-disordered breathing (SDB). Normal lingual gnosis and praxis are part of this early development related to the normal sensorimotor development of the tongue and surrounding oral musculature. The aim of this retrospective study was to explore if lingual praxia is impaired in both SDB children and adults and if there is an association to craniofacial morphology. Read More

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http://dx.doi.org/10.1093/sleep/zsz168DOI Listing
December 2019
5 Reads

Vertical and Radial Attentional Neglect in Corticobasal Syndrome.

Cogn Behav Neurol 2019 09;32(3):208-213

Division of Cognitive and Behavioral Neurology, Department of Neurology, University of Florida College of Medicine.

Corticobasal degeneration (CBD), a tau-related neurodegenerative disease, is characterized by limb rigidity, dystonia, myoclonus, apraxia, and cognitive deficits. We report a patient with probable corticobasal syndrome, a major phenotype of CBD, who revealed both lower vertical and proximal radial attentional neglect on line bisection tests. Brain imaging revealed bilateral parietal atrophy with hypometabolism in the bilateral parietal, dorsolateral prefrontal, and premotor cortices. Read More

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http://dx.doi.org/10.1097/WNN.0000000000000204DOI Listing
September 2019
2 Reads

Genetic and phenotypic features of patients with childhood ataxias diagnosed by next-generation sequencing gene panel.

Brain Dev 2020 Jan 4;42(1):6-18. Epub 2019 Sep 4.

Hacettepe University, School of Medicine, Department of Child Neurology, Ankara, Turkey.

Background: The purpose of this prospective study was to identify the characteristics of pediatric recessive ataxias and the mutations leading to them.

Methods: Eighty-four pediatric patients aged 0-18 years presenting to our clinic, evaluated by means of imaging, metabolic or pathological investigation, or single-gene test, in whom Friedreich's ataxia was excluded, and predicted to carry the progressive autosomal recessive ataxia gene were included in the study. Patients' demographic, clinical, laboratory, and radiological characteristics were recorded. Read More

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http://dx.doi.org/10.1016/j.braindev.2019.08.004DOI Listing
January 2020
2 Reads

Speech, language, and feeding phenotypes of SATB2-associated syndrome.

Clin Genet 2019 12 12;96(6):485-492. Epub 2019 Aug 12.

Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, Arkansas.

SATB2-associated syndrome (SAS) is a recently identified disorder characterized by neurodevelopmental deficits and craniofacial anomalies. Assessments of speech, language, and feeding-related issues were conducted among 61 individuals with SAS (median age = 86 months, range = 26 months to 29 years of age). Individuals with SAS were mostly non-verbal communicators (72. Read More

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http://dx.doi.org/10.1111/cge.13619DOI Listing
December 2019
4 Reads

Aprosodia and prosoplegia with right frontal neurodegeneration.

Neurocase 2019 10 23;25(5):187-194. Epub 2019 Jul 23.

Behavioral Neurology Section, Department of Neurology, University of Colorado School of Medicine; Rocky Mountain Alzheimer's Disease Center , Aurora , CO , USA.

Affective prosody and facial expression are essential components of human communication. Aprosodic syndromes are associated with focal right cerebral lesions that impair the affective-prosodic aspects of language, but are rarely identified because affective prosody is not routinely assessed by clinicians. Inability to produce emotional faces (affective prosoplegia) is a related and important aspect of affective communication has overlapping neuroanatomic substrates with affective prosody. Read More

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http://dx.doi.org/10.1080/13554794.2019.1646291DOI Listing
October 2019
1 Read

Finger-counting observation interferes with number processing.

Neuropsychologia 2019 08 8;131:275-284. Epub 2019 Jun 8.

Dept. of Psychology, University of Milano-Bicocca, Milan, Italy; Neuro-Mi Center for Neuroscience, University of Milano-Bicocca, Milan, Italy.

Aim of this study was to investigate the association between finger and number representation in a task in which students had to perform arithmetic calculations and decide whether the provided solution was correct or incorrect, while a pair of task-irrelevant hands gesturally expressed the same or a different number. In particular we aimed at investigating whether irrelevant finger-counting might interfere with arithmetic computing, thus showing the existence of a strict neural association between the two processes. 20 volunteers took part to the investigation and EEG/ERPs were recorded from 128 scalp sites. Read More

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http://dx.doi.org/10.1016/j.neuropsychologia.2019.06.001DOI Listing
August 2019
16 Reads

Bi-allelic Mutations in FAM149B1 Cause Abnormal Primary Cilium and a Range of Ciliopathy Phenotypes in Humans.

Am J Hum Genet 2019 04 21;104(4):731-737. Epub 2019 Mar 21.

Department of Genetics, King Faisal Specialist Hospital and Research Center, PO Box 3354, Riyadh 11211, Saudi Arabia; Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh 12371, Saudi Arabia; Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia. Electronic address:

Ciliopathies are clinical disorders of the primary cilium with widely recognized phenotypic and genetic heterogeneity. In two Arab consanguineous families, we mapped a ciliopathy phenotype that most closely matches Joubert syndrome (hypotonia, developmental delay, typical facies, oculomotor apraxia, polydactyly, and subtle posterior fossa abnormalities) to a single locus in which a founder homozygous truncating variant in FAM149B1 was identified by exome sequencing. We subsequently identified a third Arab consanguineous multiplex family in which the phenotype of Joubert syndrome/oral-facial-digital syndrome (OFD VI) was found to co-segregate with the same founder variant in FAM149B1. Read More

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http://dx.doi.org/10.1016/j.ajhg.2019.02.018DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6451727PMC
April 2019
39 Reads

Basal ganglia involvement in patients: The reason for patients very specific grasping?

Neuroimage Clin 2018 5;19:454-465. Epub 2018 Apr 5.

Psychiatric Neuroimaging Program, Department of Psychiatry, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA.

The () gene was identified in 2002 as responsible for XLAG syndrome, a lissencephaly characterized by an almost complete absence of cortical GABAergic interneurons, and for milder forms of X-linked Intellectual Disability (ID) without apparent brain abnormalities. The most frequent mutation found in the gene, a duplication of 24 base pairs (c.429_452dup24) in exon 2, results in a recognizable syndrome in which patients present ID without primary motor impairment, but with a very specific upper limb distal motor apraxia associated with a pathognomonic hand-grip, described as developmental Limb Kinetic Apraxia (LKA). Read More

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http://dx.doi.org/10.1016/j.nicl.2018.04.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6029499PMC
January 2019
54 Reads

A progressive breakdown of the body in space.

Neurocase 2018 06 8;24(3):133-139. Epub 2018 Jun 8.

a Neuropsychology and Language Disorders Unit, Department of Neurology , School of Medicine, National and Kapodistrian University of Athens , Greece.

A 74 year-old woman (MD), free of previous neurological history, presented with difficulty in handling cutlery, clothes, writing with what was initially described as an atypical apraxia in acts related to space. Initial neurological evaluation revealed mixed, asymmetric pyramidal, and extrapyramidal semiology. Νeuropsychological testing revealed dressing and constructional deficits, ideomotor apraxia and signs of executive dysfunction in absence of memory, language, and visual perception pathology. Read More

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http://dx.doi.org/10.1080/13554794.2018.1482356DOI Listing
June 2018
22 Reads

Extra-Thoracic Supra-aortic Bypass Surgery Is Safe in Thoracic Endovascular Aortic Repair and Arterial Occlusive Disease Treatment.

Eur J Vasc Endovasc Surg 2018 06 22;55(6):861-866. Epub 2018 Apr 22.

European Vascular Centre Aachen-Maastricht, Department of Vascular Surgery, University Hospital RWTH Aachen, Aachen, Germany.

Objective: The safety and feasibility of supra-aortic debranching as part of endovascular aortic surgery or as a treatment option for arterial occlusive disease (AOD) remains controversial. The aim of this study was to assess the clinical outcome of this surgery.

Methods: This single centre, retrospective study included 107 patients (mean age 69. Read More

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http://dx.doi.org/10.1016/j.ejvs.2018.03.020DOI Listing
June 2018
49 Reads

Oculomotor apraxia and disrupted sleep with nocturnal ballistic bouts in ADCY5-related disease.

Parkinsonism Relat Disord 2018 09 10;54:103-106. Epub 2018 Apr 10.

Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, Queen Square, London, UK. Electronic address:

Objective: To characterise the distinctive eye movement disorder and the sleep-related dyskinesia in Adenylate cyclase 5 (ADCY5) related disease.

Methods: Formal eye movement examination and video-polysomnography in a cohort of patients with ADCY5 mutations.

Results: All three patients had an eye movement disorder characterised by oculomotor apraxia with gaze limitation most prominently in the vertical plane. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S13538020183015
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http://dx.doi.org/10.1016/j.parkreldis.2018.04.011DOI Listing
September 2018
17 Reads

Phenotypic Spectrum of Children with Nephronophthisis and Related Ciliopathies.

Clin J Am Soc Nephrol 2017 Dec 16;12(12):1974-1983. Epub 2017 Nov 16.

Due to the number of contributing authors, the affiliations are provided in the Supplemental Material.

Background And Objectives: Genetic heterogeneity and phenotypic variability are major challenges in familial nephronophthisis and related ciliopathies. To date, mutations in 20 different genes ( to ) have been identified causing either isolated kidney disease or complex multiorgan disorders. In this study, we provide a comprehensive and detailed characterization of 152 children with a special focus on extrarenal organ involvement and the long-term development of ESRD. Read More

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http://dx.doi.org/10.2215/CJN.01280217DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5718263PMC
December 2017
69 Reads

FDG-PET in Creutzfeldt-Jakob disease: Analysis of clinical-PET correlation.

Prion 2017 11 13;11(6):440-453. Epub 2017 Nov 13.

b Department of Nuclear Medicine , Nîmes University Hospital , Nîmes , France.

Objective: To assess the relationship between clinical pattern and cerebral glucose metabolism on [18F]fluoro-2-deoxy-D-glucose positron emission tomography (FDG-PET) in Creutzfeldt-Jakob disease (CJD).

Methods: Predefined clinical signs (ataxia, visual, pyramidal, myoclonus, limb apraxia, limb dystonia, sensory, parkinsonism, and corticobasal syndrome [CBS]) and FDG-PET data were assessed in consecutive CJD patients. Two types of statistical parametric mapping (SPM) analyses, using stringent level of significance p < 0. Read More

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http://dx.doi.org/10.1080/19336896.2017.1387348DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786355PMC
November 2017
60 Reads

Defective ciliogenesis in INPP5E-related Joubert syndrome.

Am J Med Genet A 2017 Dec 20;173(12):3231-3237. Epub 2017 Oct 20.

NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland.

Joubert syndrome is a neurodevelopmental disorder, characterized by malformation of the mid and hindbrain leading to the pathognomonic molar tooth appearance of the brainstem and cerebellum on axial MRI. Core clinical manifestations include hypotonia, tachypnea/apnea, ataxia, ocular motor apraxia, and developmental delay of varying degrees. In addition, a subset of patients has retinal dystrophy, chorioretinal colobomas, hepatorenal fibrocystic disease, and polydactyly. Read More

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http://dx.doi.org/10.1002/ajmg.a.38376DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5685896PMC
December 2017
52 Reads

Acquired epileptic opercular syndrome related to a heterozygous deleterious substitution in GRIN2A.

Epileptic Disord 2017 Sep;19(3):345-350

Laboratoire de Cartographie Fonctionnelle du Cerveau, Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Department of Pediatric Neurology, Centre Hospitalier Universitaire d'Angers, Angers, France.

Epileptic encephalopathies with continuous spike-and-waves during sleep (CSWS) are characterized by cognitive or language impairment, and are occasionally associated with pathogenic variants of the GRIN2A gene. In these disorders, speech dysfunction could be either related to cerebral dysfunction caused by the GRIN2A deleterious variant or intense interictal epileptic activity. Here, we present a patient with apraxia of speech, clearly linked to severity of epilepsy, carrying a GRIN2A variant. Read More

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http://dx.doi.org/10.1684/epd.2017.0931DOI Listing
September 2017
34 Reads

Identification of 2 Potentially Relevant Gene Mutations Involved in Strabismus Using Whole-Exome Sequencing.

Med Sci Monit 2017 Apr 9;23:1719-1724. Epub 2017 Apr 9.

Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).

BACKGROUND The etiology of strabismus has a genetic component. Our study aimed to localize the candidate causative gene mutant in a Chinese family with strabismus and to describe its underlying etiology. MATERIAL AND METHODS Genomic DNA was extracted from the affected individual and his parents in a Chinese pedigree with strabismus. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5395132PMC
http://dx.doi.org/10.12659/msm.902823DOI Listing
April 2017
54 Reads

ZC4H2 deletions can cause severe phenotype in female carriers.

Am J Med Genet A 2017 May 27;173(5):1358-1363. Epub 2017 Mar 27.

Developmental Neurology Unit, Department of Pediatric Neurosciences, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.

ZC4H2 is involved in human brain development, and, if mutated, can be responsible for a rare X-linked disorder, originally presented in literature as Wieacker-Wolff syndrome and Miles-Carpenter syndrome. In males, severe intellectual disability is associated with variable symptoms of central and peripheral nervous system involvement, such as spasticity, hyperreflexia, muscle weakness, and arthrogryposis. Female carriers are usually described as asymptomatic or only mildly affected. Read More

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http://dx.doi.org/10.1002/ajmg.a.38155DOI Listing
May 2017
70 Reads

XRCC1 mutation is associated with PARP1 hyperactivation and cerebellar ataxia.

Nature 2017 01 21;541(7635):87-91. Epub 2016 Dec 21.

Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9RH, UK.

XRCC1 is a molecular scaffold protein that assembles multi-protein complexes involved in DNA single-strand break repair. Here we show that biallelic mutations in the human XRCC1 gene are associated with ocular motor apraxia, axonal neuropathy, and progressive cerebellar ataxia. Cells from a patient with mutations in XRCC1 exhibited not only reduced rates of single-strand break repair but also elevated levels of protein ADP-ribosylation. Read More

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http://dx.doi.org/10.1038/nature20790DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5218588PMC
January 2017
79 Reads

Joubert syndrome in a neonate: case report with literature review.

Sudan J Paediatr 2016 ;16(1):53-7

Surgical Department, Radiology Division, Hadhramout University College of Medicine , Hadhramout Governorate , Yemen.

Joubert syndrome is a rare autosomal recessive disorder. It is characterized by congenital ataxia, hypotonia, developmental delay and at least one of the following features: neonatal respiratory disturbances and abnormal eye movements; including nystagmus and oculomotor apraxia. Molar tooth appearance is an essential finding for the diagnosis of Joubert syndrome. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025933PMC
September 2016
38 Reads

Mild Developmental Foreign Accent Syndrome and Psychiatric Comorbidity: Altered White Matter Integrity in Speech and Emotion Regulation Networks.

Front Hum Neurosci 2016 9;10:399. Epub 2016 Aug 9.

Cognitive Neurology and Aphasia Unit and Cathedra ARPA of Aphasia, Centro de Investigaciones Médico-Sanitarias, Instituto de Investigación Biomédica de Málaga (IBIMA), University of MalagaMalaga, Spain; Department of Psychobiology and Methodology of Behavioural Sciences, Faculty of Psychology, University of MalagaMalaga, Spain.

Foreign accent syndrome (FAS) is a speech disorder that is defined by the emergence of a peculiar manner of articulation and intonation which is perceived as foreign. In most cases of acquired FAS (AFAS) the new accent is secondary to small focal lesions involving components of the bilaterally distributed neural network for speech production. In the past few years FAS has also been described in different psychiatric conditions (conversion disorder, bipolar disorder, and schizophrenia) as well as in developmental disorders (specific language impairment, apraxia of speech). Read More

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http://dx.doi.org/10.3389/fnhum.2016.00399DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977429PMC
August 2016
49 Reads

More Than Ataxia: Hyperkinetic Movement Disorders in Childhood Autosomal Recessive Ataxia Syndromes.

Authors:
Toni S Pearson

Tremor Other Hyperkinet Mov (N Y) 2016 16;6:368. Epub 2016 Jul 16.

Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA.

Background: The autosomal recessive ataxias are a heterogeneous group of disorders that are characterized by complex neurological features in addition to progressive ataxia. Hyperkinetic movement disorders occur in a significant proportion of patients, and may sometimes be the presenting motor symptom. Presentations with involuntary movements rather than ataxia are diagnostically challenging, and are likely under-recognized. Read More

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http://dx.doi.org/10.7916/D8H70FSSDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950223PMC
August 2016
55 Reads

PSP-CBS with Dopamine Deficiency in a Female with a FMR1 Premutation.

Cerebellum 2016 10;15(5):636-40

Department of Neurology and Clinical Neuroscience, Karolinska University Hospital and Karolinska Institutet, 141 86, Stockholm, Sweden.

Premutations in the fragile X mental retardation 1 (FMR1) gene cause fragile X-associated tremor/ataxia syndrome (FXTAS) and FMR1-related primary ovarian insufficiency (POI). Female FMR1 premutation carriers rarely develop motor features. Dual pathology is an emerging phenomenon among FMR1 premutation carriers. Read More

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http://dx.doi.org/10.1007/s12311-016-0793-xDOI Listing
October 2016
64 Reads
1 Citation
2.864 Impact Factor

Brain Perfusion in Corticobasal Syndrome with Progressive Aphasia.

Dement Geriatr Cogn Dis Extra 2016 Jan-Apr;6(1):133-41. Epub 2016 Apr 15.

Department of Neurology, Faculty of Medicine, Oita University, Yufu, Japan.

Background: Brain perfusion may differ between patients with corticobasal syndrome (CBS) with and without aphasia.

Methods: Twenty-six (9 males and 17 females; mean age 76 ± 5.3 years) patients with CBS were enrolled in the study. Read More

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http://dx.doi.org/10.1159/000443329DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4868931PMC
May 2016
45 Reads

Oculomotor apraxia and dilated cardiomyopathy with ataxia syndrome: A case report.

Ophthalmic Genet 2017 Jan-Feb;38(1):88-90. Epub 2016 Apr 7.

a Department of Ophthalmology and Visual Sciences , University of Alberta , Edmonton , Alberta , Canada.

Dilated cardiomyopathy with ataxia syndrome (DCMA) is a rare mitochondrial condition associated with early onset cardiomyopathy and non-progressive ataxia. The cardiac manifestations may be progressive and often severe, resulting in significant morbidity and mortality. While optic nerve atrophy has been described in patients with DCMA, to our knowledge, there have been no reports of additional ocular phenotypes. Read More

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http://dx.doi.org/10.3109/13816810.2015.1137327DOI Listing
November 2017
59 Reads

Developmental Foreign Accent Syndrome: Report of a New Case.

Front Hum Neurosci 2016 10;10:65. Epub 2016 Mar 10.

Department of Language and Communication Science, City University LondonLondon, UK; Computational Linguistics and Psycholinguistics Research Center, Universiteit AntwerpenAntwerp, Belgium.

This paper presents the case of a 17-year-old right-handed Belgian boy with developmental FAS and comorbid developmental apraxia of speech (DAS). Extensive neuropsychological and neurolinguistic investigations demonstrated a normal IQ but impaired planning (visuo-constructional dyspraxia). A Tc-99m-ECD SPECT revealed a significant hypoperfusion in the prefrontal and medial frontal regions, as well as in the lateral temporal regions. Read More

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http://dx.doi.org/10.3389/fnhum.2016.00065DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4785140PMC
March 2016
56 Reads

A de novo CTNNB1 nonsense mutation associated with syndromic atypical hyperekplexia, microcephaly and intellectual disability: a case report.

BMC Neurol 2016 Mar 12;16:35. Epub 2016 Mar 12.

Department of Genetics, King Faisal Hospital and Research Centre, Riyadh, Saudi Arabia.

Background: In addition to its role in cell adhesion and gene expression in the canonical Wingless/integrated Wnt signaling pathway, β-catenin also regulates genes that underlie the transmission of nerve impulses. Mutations of CTNNB1 (β-catenin) have recently been described in patients with a wide range of neurodevelopmental disorders (intellectual disability, microcephaly and other syndromic features). We for the first time associate CTNNB1 mutation with hyperekplexia identifying it as an additional candidate for consideration in patients with startle syndrome. Read More

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http://dx.doi.org/10.1186/s12883-016-0554-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4788907PMC
March 2016
162 Reads

Gait dyspraxia as a clinical marker of cognitive decline in Down syndrome: A review of theory and proposed mechanisms.

Brain Cogn 2016 Apr 27;104:48-57. Epub 2016 Feb 27.

University of Florida College of Medicine, Department of Neurology, Room L3-100, McKnight Brain Institute, 1149 Newell Drive, Gainesville, FL 32611, United States. Electronic address:

Down syndrome (DS) is the most common genetic cause of intellectual disability in children. With aging, DS is associated with an increased risk for Alzheimer's disease (AD). The development of AD neuropathology in individuals with DS can result in further disturbances in cognition and behavior and may significantly exacerbate caregiver burden. Read More

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http://dx.doi.org/10.1016/j.bandc.2016.02.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4801771PMC
April 2016
64 Reads

Role of reverse phenotyping in interpretation of next generation sequencing data and a review of INPP5E related disorders.

Eur J Paediatr Neurol 2016 Mar 18;20(2):286-295. Epub 2015 Dec 18.

Manchester Centre for Genomic Medicine, St. Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Manchester Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK. Electronic address:

Introduction: Next Generation Sequencing (NGS) is a useful tool in diagnosis of rare disorders but the interpretation of data can be challenging in clinical settings. We present results of extended studies on a family of multiple members with global developmental delay and learning disability, where another research group postulated the underlying cause to be a homozygous RABL6 missense variant.

Methods And Results: Using data from the Exome Variant Server, we show that missense RABL6 variants are unlikely to cause early onset rare developmental disorder. Read More

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http://dx.doi.org/10.1016/j.ejpn.2015.11.012DOI Listing
March 2016
71 Reads

Two insular regions are differentially involved in behavioral variant FTD and nonfluent/agrammatic variant PPA.

Cortex 2016 Jan 14;74:149-57. Epub 2015 Nov 14.

Department of Neurology, Memory and Aging Center, University of California San Francisco, San Francisco, CA, United States.

The non-fluent/agrammatic variant of primary progressive aphasia (nfvPPA) and the behavioral variant frontotemporal dementia (bvFTD) are focal neurodegenerative disorders belonging to the FTD-spectrum clinical syndromes. NfvPPA is characterized by effortful speech and/or agrammatism and left frontal atrophy, while bvFTD is characterized by social-emotional dysfunction often accompanied by right-lateralized frontal damage. Despite their contrasting clinical presentations, both disorders show prominent left anterior insula atrophy. Read More

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http://dx.doi.org/10.1016/j.cortex.2015.10.012DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4755480PMC
January 2016
92 Reads

Supplementary Motor Complex and Disturbed Motor Control - a Retrospective Clinical and Lesion Analysis of Patients after Anterior Cerebral Artery Stroke.

Front Neurol 2015 12;6:209. Epub 2015 Oct 12.

Klinik für Neurologie, Kantonsspital St. Gallen , St. Gallen , Switzerland.

Background: Both the supplementary motor complex (SMC), consisting of the supplementary motor area (SMA) proper, the pre-SMA, and the supplementary eye field, and the rostral cingulate cortex are supplied by the anterior cerebral artery (ACA) and are involved in higher motor control. The Bereitschaftspotential (BP) originates from the SMC and reflects cognitive preparation processes before volitional movements. ACA strokes may lead to impaired motor control in the absence of limb weakness and evoke an alien hand syndrome (AHS) in its extreme form. Read More

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http://journal.frontiersin.org/Article/10.3389/fneur.2015.00
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http://dx.doi.org/10.3389/fneur.2015.00209DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4600920PMC
November 2015
78 Reads

The complexity of the relationship between neuropsychological deficits and impairment in everyday tasks after stroke.

Brain Behav 2015 Oct 16;5(10):e00371. Epub 2015 Sep 16.

Department of Sport and Health Sciences Institute of Human Movement Science Technische Universität München München Germany.

Background And Purpose: A large body of research reports that stroke patients are debilitated in terms of daily independence after dismissal from the hospital unit. Patients struggle with the use of daily objects or performing complex actions. Differences between individual deficits of patients are often associated with the site of the brain damage. Read More

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http://dx.doi.org/10.1002/brb3.371DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4614052PMC
October 2015
63 Reads

Cognitive-motor dysfunction after severe traumatic brain injury: A cerebral interhemispheric disconnection syndrome.

J Clin Exp Neuropsychol 2015 4;37(10):1062-73. Epub 2015 Sep 4.

a Brain Rehabilitation Research Center of the Malcom Randall VAMC , Gainesville , FL , USA.

Background/objectives: In most right-handed people, the left hemisphere is dominant for programming the temporal and spatial "how" (praxis) aspects of purposeful skilled movements, and the right hemisphere is dominant for control of the intentional "when" aspects of actions that mediate initiation, persistence, termination, and inhibition. Since the interhemispheric axons of the corpus callosum are especially susceptible to shearing from torsional forces during traumatic brain injury (TBI), the goal of this study was to learn whether participants with a history of severe traumatic brain injury demonstrate three types of cognitive-motor impairments that may result from callosal injury: ideomotor apraxia of the left hand, limb kinetic apraxia of the left hand, and hypokinesia of the right hand in response to left hemispatial stimuli.

Method: Nine participants with severe TBI and nine healthy control participants were studied for the presence of ideomotor apraxia, limb kinetic apraxia, and hypokinesia. Read More

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http://dx.doi.org/10.1080/13803395.2015.1077930DOI Listing
June 2016
57 Reads

Visual processing during recovery from vegetative state to consciousness: comparing behavioral indices to brain responses.

Neurophysiol Clin 2014 Nov 10;44(5):457-69. Epub 2014 Sep 10.

Tilburg University, Department of Psychology, Tilburg, The Netherlands.

Background: Auditory stimulation is often used to evoke responses in unresponsive patients who have suffered severe brain injury. In order to investigate visual responses, we examined visual evoked potentials (VEPs) and behavioral responses to visual stimuli in vegetative patients during recovery to consciousness.

Methods: Behavioral responses to visual stimuli (visual localization, comprehension of written commands, and object manipulation) and flash VEPs were repeatedly examined in eleven vegetative patients every two weeks for an average period of 2. Read More

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http://www.beatricedegelder.com/documents/Wijnen_2014.pdf
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http://linkinghub.elsevier.com/retrieve/pii/S098770531400068
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http://dx.doi.org/10.1016/j.neucli.2014.08.008DOI Listing
November 2014
67 Reads

Cerebellum and apraxia.

Cerebellum 2015 Feb;14(1):39-42

Clinical and Experimental Neurolinguistics, CLIN, Vrije Universiteit Brussel, Brussels, Belgium,

As early as the beginning of the nineteenth century, a variety of nonmotor cognitive and affective impairments associated with cerebellar pathology were occasionally documented. A causal link between cerebellar disease and nonmotor cognitive and affective disorders has, however, been dismissed for almost two centuries. During the past decades, the prevailing view of the cerebellum as a mere coordinator of autonomic and somatic motor function has changed fundamentally. Read More

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http://dx.doi.org/10.1007/s12311-014-0620-1DOI Listing
February 2015
60 Reads

Neuropsychological and brain volume differences in patients with left- and right-beginning corticobasal syndrome.

PLoS One 2014 30;9(10):e110326. Epub 2014 Oct 30.

Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Jülich, Germany.

Background: Corticobasal Syndrome (CBS) is a rare neurodegenerative syndrome characterized by unilaterally beginning frontoparietal and basal ganglia atrophy. The study aimed to prove the hypothesis that there are differences in hemispheric susceptibility to disease-related changes.

Methods: Two groups of CBS patients with symptoms starting either on the left or right body side were investigated. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0110326PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4214821PMC
June 2015
29 Reads

Corticobasal syndrome: Five new things.

Neurol Clin Pract 2014 Aug;4(4):304-312

Department of Neurology (LMC, MG, RGG), University of Pennsylvania, Philadelphia; Department of Neurology (TR), University of Chicago, IL; and Department of Internal Medicine and Pathology (JJR), American University of Beirut, Lebanon.

Corticobasal syndrome (CBS) is characterized by asymmetric involuntary movements including rigidity, tremor, dystonia, and myoclonus, and often associated with apraxia, cortical sensory deficits, and alien limb phenomena. Additionally, there are various nonmotor (cognitive and language) deficits. CBS is associated with several distinct histopathologies, including corticobasal degeneration, other forms of tau-related frontotemporal lobar degeneration such as progressive supranuclear palsy, and Alzheimer disease. Read More

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http://dx.doi.org/10.1212/CPJ.0000000000000026DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4160446PMC
August 2014
93 Reads

Treatment of frontotemporal dementia.

Curr Treat Options Neurol 2014 Nov;16(11):319

Department of Neurology, University of California San Francisco, 675 Nelson Rising Lane, Suite 190, San Francisco, CA, 94115, USA,

Opinion Statement: Frontotemporal dementia (FTD) encompasses a spectrum of neurodegenerative diseases with heterogeneous clinical presentations and two predominant types of underlying neuropathology. FTD typically comprises three distinct clinical syndromes: behavioral variant frontotemporal dementia (bvFTD), semantic variant primary progressive aphasia (svPPA), and nonfluent variant primary progressive aphasia (nfvPPA). FTD also frequently overlaps both clinically and neuropathologically with three other neurodegenerative syndromes: corticobasal syndrome (CBS), progressive supranuclear palsy (PSP), and amyotrophic lateral sclerosis (ALS). Read More

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http://dx.doi.org/10.1007/s11940-014-0319-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4920050PMC
November 2014
89 Reads

The evolution of primary progressive apraxia of speech.

Brain 2014 Oct 11;137(Pt 10):2783-95. Epub 2014 Aug 11.

6 Department of Radiology (Neuroradiology), Mayo Clinic, Rochester, MN 55905, USA.

Primary progressive apraxia of speech is a recently described neurodegenerative disorder in which patients present with an isolated apraxia of speech and show focal degeneration of superior premotor cortex. Little is known about how these individuals progress over time, making it difficult to provide prognostic estimates. Thirteen subjects with primary progressive apraxia of speech underwent two serial comprehensive clinical and neuroimaging evaluations 2. Read More

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http://dx.doi.org/10.1093/brain/awu223DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4229741PMC
October 2014
67 Reads
21 Citations
9.200 Impact Factor

Genetic bases and clinical manifestations of coenzyme Q10 (CoQ 10) deficiency.

J Inherit Metab Dis 2015 Jan 5;38(1):145-56. Epub 2014 Aug 5.

Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, Via Giustiniani 3, Padova, 35128, Italy.

Coenzyme Q(10) is a remarkable lipid involved in many cellular processes such as energy production through the mitochondrial respiratory chain (RC), beta-oxidation of fatty acids, and pyrimidine biosynthesis, but it is also one of the main cellular antioxidants. Its biosynthesis is still incompletely characterized and requires at least 15 genes. Mutations in eight of them (PDSS1, PDSS2, COQ2, COQ4, COQ6, ADCK3, ADCK4, and COQ9) cause primary CoQ(10) deficiency, a heterogeneous group of disorders with variable age of onset (from birth to the seventh decade) and associated clinical phenotypes, ranging from a fatal multisystem disease to isolated steroid resistant nephrotic syndrome (SRNS) or isolated central nervous system disease. Read More

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http://dx.doi.org/10.1007/s10545-014-9749-9DOI Listing
January 2015
72 Reads

A case of pathology-proven neuromyelitis optica spectrum disorder with Sjögren syndrome manifesting aphasia and apraxia due to a localized cerebral white matter lesion.

Mult Scler 2014 Sep 1;20(10):1413-6. Epub 2014 Jul 1.

Division of Neurology, Asahikawa Medical University, Japan.

A woman with Sjögren syndrome manifesting as aphasia with a left deep cerebral white matter lesion tested positive for anti-aquaporin 4 (AQP4) antibody. Open biopsy of the lesion revealed active demyelination with edematous changes and the preservation of most axons, indicating a non-necrotic demyelinating lesion. Immunostaining for AQP4 was diffusely lost, whereas the loss of glial fibrillary acidic protein immunostaining was limited but with highly degenerated astrocytic foot processes in perivascular areas. Read More

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http://dx.doi.org/10.1177/1352458514540834DOI Listing
September 2014
47 Reads

Resistance to thyroid hormone caused by a mutation in thyroid hormone receptor (TR)α1 and TRα2: clinical, biochemical, and genetic analyses of three related patients.

Lancet Diabetes Endocrinol 2014 Aug 23;2(8):619-26. Epub 2014 Jun 23.

University of Cambridge Metabolic Research Laboratories, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, UK. Electronic address:

Background: The thyroid hormone receptor α gene (THRA) transcript is alternatively spliced to generate either thyroid hormone receptor (TR)α1 or a non-hormone-binding variant protein, TRα2, the function of which is unknown. Here, we describe the first patients identified with a mutation in THRA that affects both TRα1 and TRα2, and compare them with patients who have resistance to thyroid hormone owing to a mutation affecting only TRα1, to delineate the relative roles of TRα1 and TRα2.

Methods: We did clinical, biochemical, and genetic analyses of an index case and her two sons. Read More

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http://dx.doi.org/10.1016/S2213-8587(14)70111-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5989926PMC
August 2014
65 Reads