51
|
Müller HP, Unrath A, Riecker A, Ludolph AC, Kassubek J. DTI data analysis: application of fiber tracking to group averaged data sets. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
52
|
Unrath A, Mueller HP, Lulé D, Riecker A, Ludolph AC, Kassubek J. Multiparametric MRI analysis of patients with amyotrophic lateral sclerosis compared to controls. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
53
|
Gdynia HJ, Kassubek J, Ludolph AC, Sechtem U, Yilmaz A. Cardiovascular magnetic resonance imaging based comparison of myocardial involvement in a patient with LGMD 2C and a patient with Becker muscular dystrophy. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
54
|
Uttner I, Kirchheiner J, Tumani H, Mottaghy FM, Lebedeva E, Ozer E, Ludolph AC, Huber R, von Arnim CAF. A novel presenilin1 mutation (Q223R) associated with early onset Alzheimer's disease, dysarthria and spastic paraparesis and decreased Abeta levels in CSF. Eur J Neurol 2009; 17:631-3. [PMID: 19912322 DOI: 10.1111/j.1468-1331.2009.02810.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE A novel presenilin1 (PSEN1) mutation associated with dementia and spastic paraplegia in a family with five affected individuals is described. The index patient was a 35-year-old man presenting with cognitive decline, behavioural symptoms, dysarthria, and gait disorder due to spasticity. METHODS AND RESULTS Genetic analysis revealed a missense mutation Gln223Arg in exon 7. Initial CSF analysis revealed drastically decreased Abeta42 level despite marginally decreased FDG metabolism. CONCLUSION Cerebrospinal fluid biomarker analysis might point towards genetic analysis of PSEN1 in patients with positive family history and age of onset below 60 years.
Collapse
|
55
|
Tedeschi W, Müller HP, Ludolph A, Kraft H, de Araujo D, Neves U, Baffa O, Erné S. A NEW METHOD FOR THE ANALYSIS OF FUNCTIONAL MAGNETIC RESONANCE IMAGING DATA: MUTUAL INFORMATION TESTS. ACTA ACUST UNITED AC 2009. [DOI: 10.1515/bmte.2003.48.s1.102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
56
|
Grosskreutz J, Kassubek J, Dengler R, Ludolph AC, Witte OW, Heinze HJ, Peschel T. Entwicklung der Hirnpathologie bei Patienten mit amyotropher Lateralsklerose in computergestützten MRI-Analysen. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
57
|
Sperfeld AD, Müller HP, Unrath A, Jüngling F, Uttner I, Schreiber H, Ludolph AC, Kassubek J. Die zentralvervöse Beteiligung der spinobulbären Muskelatrophie Typ Kennedy: ganzhirnbasierte multiparametrische MRT-Untersuchungen und neuropsychologische Befunde. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
58
|
Kassubek J, Müller HP, Sperfeld AD, Ludolph AC, Unrath A. Ausgedehnte Veränderungen der weißen und grauen Substanz bei primärer Lateralsklerose: eine Ganzhirn-basierte multiparametrische MRT-Studie. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
59
|
Huber R, Knauer K, Ludolph AC, Müller S. MR-negative zerebral-ischämische Insulte. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
60
|
Knauer C, Weber Y, Steinwald V, Knauer K, Ludolph AC, Huber R. Palataler Myoklonus nach ischämischem Thalamusinsult. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
61
|
Süssmuth SD, Sperfeld AD, Ludolph AC, Tumani H. Erhöhung des Liquor/Serum-Albuminquotienten bei neurodegenerativen Erkrankungen: die Hyperkapnie als relevanter Einflussfaktor am Beispiel der Amyotrophen Lateralsklerose. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
62
|
Pinkhardt EH, Jürgens R, Becker W, Ludolph AC, Kassubek J. Alterations of eye movements in Parkinson's disease with high frequency subthalamic nucleus deep brain stimulation. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
63
|
Wallnöfer M, Gdynia HJ, Gattermann J, Ludolph AC, Kassubek J, Sperfeld AD. Neuromuskuläre Beteiligung bei FSME-Infektion – ein Fallbericht. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
64
|
Brettschneider J, Fang L, Schattauer D, Teuchert M, Huber-Abel F, Hendrich C, Dorst J, Wlaschek M, Scharffetter-Kochanek K, Tumani H, Ludolph A. Linking neuron and skin: matrix metalloproteinases in amyotrophic lateral sclerosis. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
65
|
Gdynia HJ, Sperfeld AD, Unrath A, Ludolph AC, Kassubek J. Myopathische Veränderungen bei idiopathischem Parkinson-Syndrom und „Dropped head“/„Bent spine“-Syndrom: histologische Daten von 21 Patienten. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
66
|
Habisch HJ, Fiedler J, Ludolph AC, Storch A, Brenner RE. Altered migration and adhesion potential of pro-neurally converted human bone marrow stromal cells. Cytotherapy 2009; 10:824-33. [PMID: 19016370 DOI: 10.1080/14653240802474331] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Bone marrow (BM)-derived mesenchymal stromal cells (MSC) are promising candidate cells for the development of neuroregenerative therapies. We have previously introduced the pro-neural conversion of human MSC to neural stem cell-like cells (m-NSC) by culturing them in suspension culture under serum-free conditions. METHODS In the present study, we used a modified Boyden chamber assay to study the influence of various chemoattractants and extracellular matrix components on MSC and m-NSC migration in vitro. The underlying mechanisms were investigated further by applying real-time reverse transcriptase (RT)-polymerase chain reaction (PCR) and flow cytometry. RESULTS The basal migration of m-NSC was significantly reduced compared with MSC (six versus 27 out of 10,000 cells migrated within 6 h). We evaluated the effects of bone morphogenic protein 2 (BMP2), insulin-like growth factor 1 (IGF1), platelet-derived growth factor bb (PDGFbb), vascular endothelial growth factor (VEGFa), and stromal cell-derived factor 1 (SDF1) on the migration potential of both cell types and PDGFbb proved to be the most potent stimulant of migration (235 versus 198 m-NSC or MSC migrated). Adhesion of m-NSC to the filter membrane was delayed and not affected by IGF1 or PDGFbb: 90% of MSC, but only 20% of m-NSC, adhered within 1 h, with 90% of m-NSC adhering within 3 h. However, real-time RT-PCR and flow cytometry revealed an up-regulation of the PDGF receptor B following conversion. Coating the membranes with collagen type I or hyaluronan also significantly influenced cell migration. DISCUSSION We could identify major chemoattractive factors for m-NSC and gained partial insight into the complex processes involved in migration of neurally converted cells.
Collapse
|
67
|
Ludolph AC, Kassubek J, Landwehrmeyer BG, Mandelkow E, Mandelkow EM, Burn DJ, Caparros-Lefebvre D, Frey KA, de Yebenes JG, Gasser T, Heutink P, Höglinger G, Jamrozik Z, Jellinger KA, Kazantsev A, Kretzschmar H, Lang AE, Litvan I, Lucas JJ, McGeer PL, Melquist S, Oertel W, Otto M, Paviour D, Reum T, Saint-Raymond A, Steele JC, Tolnay M, Tumani H, van Swieten JC, Vanier MT, Vonsattel JP, Wagner S, Wszolek ZK. Tauopathies with parkinsonism: clinical spectrum, neuropathologic basis, biological markers, and treatment options. Eur J Neurol 2009; 16:297-309. [PMID: 19364361 DOI: 10.1111/j.1468-1331.2008.02513.x] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tauopathies with parkinsonism represent a spectrum of disease entities unified by the pathologic accumulation of hyperphosphorylated tau protein fragments within the central nervous system. These pathologic characteristics suggest shared pathogenetic pathways and possible molecular targets for disease-modifying therapeutic interventions. Natural history studies, for instance, in progressive supranuclear palsy, frontotemporal dementia with parkinsonism linked to chromosome 17, corticobasal degeneration, and Niemann-Pick disease type C as well as in amyotrophic lateral sclerosis/Parkinson-dementia complex permit clinical characterization of the disease phenotypes and are crucial to the development and validation of biological markers for differential diagnostics and disease monitoring, for example, by use of neuroimaging or proteomic approaches. The wide pathologic and clinical spectrum of the tauopathies with parkinsonism is reviewed in this article, and perspectives on future advances in the understanding of the pathogenesis are given, together with potential therapeutic strategies.
Collapse
|
68
|
Gdynia HJ, Müller HP, Ludolph AC, Köninger H, Huber R. Quantitative muscle ultrasound in neuromuscular disorders using the parameters 'intensity', 'entropy', and 'fractal dimension'. Eur J Neurol 2009; 16:1151-8. [PMID: 19486136 DOI: 10.1111/j.1468-1331.2009.02663.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE Ultrasound is a useful non-invasive instrument in visualizing physiological and pathological morphology in skeletal muscle. Here, we evaluate the possibility that quantitative muscle ultrasound using the parameters 'intensity', 'entropy', and 'fractal dimension' is a feasible method to distinguish between dystrophic myopathies (DM), inflammatory myopathies (IM), and motor neuron disorders. METHODS Seven patients with IM, 12 patients with DM, nine patients with motor neuron diseases, and 24 healthy subjects underwent an identical ultrasound examination protocol, applied on gastrocnemius and tibialis anterior muscle. Analysis parameters were applied on grey scale images as well as on gradient images. RESULTS Statistical evaluation revealed no significant differences in the evaluated parameters for differentiation of the distinct disease groups. Compared with healthy controls however we found statistically significant differences between almost of all the investigated parameters, even in disease cases with clinically unaffected distal musculature. CONCLUSION The parameters are able to distinguish between healthy and affected musculature but not between distinct disease entities. Studies are needed to establish whether or not the parameters are helpful to monitor muscle involvement and disease progression in neuromuscular diseases.
Collapse
|
69
|
Ludolph AC, Kassubek J, Landwehrmeyer BG, Mandelkow E, Mandelkow EM, Burn DJ, Caparros-Lefebvre D, Frey KA, de Yebenes JG, Gasser T, Heutink P, Höglinger G, Jamrozik Z, Jellinger KA, Kazantsev A, Kretzschmar H, Lang AE, Litvan I, Lucas JJ, McGeer PL, Melquist S, Oertel W, Otto M, Paviour D, Reum T, Saint-Raymond A, Steele JC, Tolnay M, Tumani H, van Swieten JC, Vanier MT, Vonsattel JP, Wagner S, Wszolek ZK. Tauopathies with parkinsonism: clinical spectrum, neuropathologic basis, biological markers, and treatment options. Eur J Neurol 2009. [PMID: 19364361 DOI: 10.1111/j.l468-1331.2008.02513.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Tauopathies with parkinsonism represent a spectrum of disease entities unified by the pathologic accumulation of hyperphosphorylated tau protein fragments within the central nervous system. These pathologic characteristics suggest shared pathogenetic pathways and possible molecular targets for disease-modifying therapeutic interventions. Natural history studies, for instance, in progressive supranuclear palsy, frontotemporal dementia with parkinsonism linked to chromosome 17, corticobasal degeneration, and Niemann-Pick disease type C as well as in amyotrophic lateral sclerosis/Parkinson-dementia complex permit clinical characterization of the disease phenotypes and are crucial to the development and validation of biological markers for differential diagnostics and disease monitoring, for example, by use of neuroimaging or proteomic approaches. The wide pathologic and clinical spectrum of the tauopathies with parkinsonism is reviewed in this article, and perspectives on future advances in the understanding of the pathogenesis are given, together with potential therapeutic strategies.
Collapse
|
70
|
Stienen A, Weinzierl M, Ludolph A, Tibussek D, Häusler M. Obstruction of cerebral venous sinus secondary to idiopathic intracranial hypertension. Eur J Neurol 2009; 15:1416-8. [PMID: 19049565 DOI: 10.1111/j.1468-1331.2008.02340.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Whether cerebral venous sinus obstruction is a cause or consequence of idiopathic intracranial hypertension (IIH) is uncertain. METHODS AND RESULTS Among the nine children with IIH, five showed stenosis (n = 5) and occlusion (n = 1) of cerebral venous sinus on cranial magnetic resonance imaging (n = 4) or conventional angiography (n = 1), respectively. Follow-up magnetic resonance imaging performed in four children showed complete regression of the venous pathology in one and partial regression in two of them. CONCLUSIONS Our data demonstrate that cerebral venous sinus obstruction is frequent and frequently transient in pediatric IIH and suggest that stenoses may result from elevated intracranial pressure.
Collapse
|
71
|
Diener H, Hartung H, Bien C, Hacke W, Ringelstein E, Ludolph A, Deuschl G, Wiltfang J, Weller M, Steinhausen K, Stemper B, Klatt J, Drepper J, Griewing B, Meier U, Herschel M, Hummel K, Paar W, Dintsios C, Schade-Brittinger C, Weber R, Weimar C. Klinische Studien in der Neurologie in Deutschland 2008. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0028-1090145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
72
|
Gdynia HJ, Osterfeld N, Dorst J, Ludolph AC, von Arnim CA, Sperfeld AD. Granulomatous myositis mimicking slowly progressive lower motor neuron disease. Eur J Med Res 2008; 13:330-331. [PMID: 18700190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
Here we illustrate a 74-year-old patient presenting with clinical signs of slowly progressive motor neuron disease. After electromyography demonstrated myopathic changes, a skeletal muscle biopsy was performed showing histological signs of granulomatous myositis. In extensive diagnostic workup underlying primary granulomas forming diseases were excluded and corticoid therapy was initiated, but without clinical effect. We want to point out that granulomatous myositis should be considered in the differential diagnosis of slowly progressive motor neuron diseases, especially in atypical clinical presentations.
Collapse
|
73
|
Pinkhardt EH, Sperfeld AD, Bretschneider V, Unrath A, Ludolph AC, Kassubek J. Is spinal epidural lipomatosis an MRI-based diagnosis with clinical implications? A retrospective analysis. Acta Neurol Scand 2008; 117:409-14. [PMID: 18081912 DOI: 10.1111/j.1600-0404.2007.00964.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Magnetic resonance imaging (MRI) is considered the most sensitive modality for evaluating spinal epidural lipomatosis (SEL) in vivo. The aim of this study was to compare the existing MRI classifications of SEL and to reevaluate the clinico-radiological correlation of SEL as a pathological entity. MATERIALS AND METHODS Measurements of the cervical, thoracic and lumbar spine were performed in a retrospective setting within 1406 data sets from the digital MRI archives. RESULTS It could be shown that the existing MRI classifications developed for different spinal regions complemented each other. However, there was no distinct correlation of these MRI findings with clinical symptoms because other morphological changes existed that probably caused the patients' complaints. CONCLUSION Existing SEL classifications developed either for the lumbar or the thoracic spine were found to be applicable to both regions, but the very vague association with clinical symptoms should caution against premature conclusions with respect to the clinical significance of SEL.
Collapse
|
74
|
Kühnlein P, Sperfeld AD, Endruhn S, Varon R, Ludolph AC, Hübner C. Sporadic ALS with early-onset respiratory failure is not associated with IGHMBP2 gene mutations. J Neurol Neurosurg Psychiatry 2008; 79:737-8. [PMID: 18187479 DOI: 10.1136/jnnp.2007.139006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
75
|
Lambrechts D, Poesen K, Fernandez-Santiago R, Al-Chalabi A, Del Bo R, Van Vught PWJ, Khan S, Marklund SL, Brockington A, van Marion I, Anneser J, Shaw C, Ludolph AC, Leigh NP, Comi GP, Gasser T, Shaw PJ, Morrison KE, Andersen PM, Van den Berg LH, Thijs V, Siddique T, Robberecht W, Carmeliet P. Meta-analysis of vascular endothelial growth factor variations in amyotrophic lateral sclerosis: increased susceptibility in male carriers of the -2578AA genotype. J Med Genet 2008; 46:840-6. [DOI: 10.1136/jmg.2008.058222] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|