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001-es BibID:BIBFORM082378
035-os BibID:(cikkazonosító)5 (WoS)000455320300001 (Scopus)85059798236
Első szerző:Ashton, Nicholas J.
Cím:Increased plasma neurofilament light chain concentration correlates with severity of post-mortem neurofibrillary tangle pathology and neurodegeneration / Nicholas J. Ashton, Antoine Leuzy, Yau Mun Lim, Claire Troakes, Tibor Hortobágyi, Kina Höglund, Dag Aarsland, Simon Lovestone, Michael Schöll, Kaj Blennow, Henrik Zetterberg, Abdul Hye
Dátum:2019
ISSN:2051-5960
Megjegyzések:Alzheimer's disease (AD) is pathologically characterized by the accumulation of amyloid- (A) plaques, neurofibrillary tangles and widespread neuronal loss in the brain. In recent years, blood biomarkers have emerged as a realistic prospect to highlight accumulating pathology for secondary prevention trials. Neurofilament light chain (NfL), a marker of axonal degeneration, is robustly elevated in the blood of many neurological and neurodegenerative conditions, including AD. A strong relationship with cerebrospinal fluid (CSF) NfL suggests that these biomarker modalities reflect the same pathological process. Yet, the connection between blood NfL and brain tissue pathology has not been directly compared. In this study, longitudinal plasma NfL from cognitively healthy controls (n=12) and AD participants (n=57) were quantified by the Simoa platform. On reaching post-mortem, neuropathological assessment was performed on all participants, with additional frozen and paraffin-embedded tissue acquired from 26 participants for further biochemical (A(1-42), A(1-40), tau) and histological (NfL) evaluation. Plasma NfL concentrations were significantly increased in AD and correlated with cognitive decline, independent of age. Retrospective stratification based on Braak staging revealed that baseline plasma NfL concentrations were associated with higher neurofibrillary tangle pathology at post-mortem. Longitudinal increases in plasma NfL were observed in all Braak groupings; a significant negative association, however, was found between plasma NfL at time point 1 and both its rate of change and annual percentage increase. Immunohistochemical evaluation of NfL in the medial temporal gyrus (MTG) demonstrated an inverse relationship between Braak stages and NfL staining. Importantly, a significant negative correlation was found between the plasma NfL measurement closest to death and the level of NfL staining in the MTG at post-mortem. For the first time, we demonstrate that plasma NfL associates with the severity of neurofibrillary tangle pathology and neurodegeneration in the post-mortem brain.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Acta Neuropathologica Communications. - 7 : 1 (2019), p. 1-11. -
További szerzők:Leuzy, Antoine Lim, Yau Mun Troakes, Claire Hortobágyi Tibor (1965-) (patológus) Höglund, Kina Aarsland, Dag Lovestone, Simon Schöll, Michael Blennow, Kaj Zetterberg, Henrik Hye, Abdul
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001-es BibID:BIBFORM051632
035-os BibID:PMID: 22692064
Első szerző:Smith, Bradley
Cím:The C9ORF72 expansion mutation is a common cause of ALS+/-FTD in Europe and has a single founder / Bradley N. Smith, Stephen Newhouse, Aleksey Shatunov, Caroline Vance, Simon Topp, Lauren Johnson, Jack Miller, Younbok Lee, Claire Troakes, Kirsten M. Scott, Ashley Jones, Ian Gray, Jamie Wright, Tibor Hortobágyi, Safa Al-Sarraj, Boris Rogelj, John Powell, Michelle Lupton, Simon Lovestone, Peter C. Sapp, Markus Weber, Peter J. Nestor, Helenius J. Schelhaas, Anneloor ALM ten Asbroek, Vincenzo Silani, Cinzia Gellera, Franco Taroni, Nicola Ticozzi, Leonard Van den Berg, Jan Veldink, Phillip Van Damme, Wim Robberecht, Pamela J. Shaw, Janine Kirby, Hardev Pall, Karen E. Morrison, Alex Morris, Jacqueline de Belleroche, J. M. B. Vianney de Jong, Frank Baas, Peter M. Andersen, John Landers, Robert H. Brown Jr., Michael E. Weale, Ammar Al-Chalabi, Christopher E. Shaw
Dátum:2013
ISSN:1018-4813
Megjegyzések:A massive hexanucleotide repeat expansion mutation (HREM) in C9ORF72 has recently been linked to amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Here we describe the frequency, origin and stability of this mutation in ALS+/-FTD from five European cohorts (total n=1347). Single-nucleotide polymorphisms defining the risk haplotype in linked kindreds were genotyped in cases (n=434) and controls (n=856). Haplotypes were analysed using PLINK and aged using DMLE+. In a London clinic cohort, the HREM was the most common mutation in familial ALS+/-FTD: C9ORF72 29/112 (26%), SOD1 27/112 (24%), TARDBP 1/112 (1%) and FUS 4/112 (4%) and detected in 13/216 (6%) of unselected sporadic ALS cases but was rare in controls (3/856, 0.3%). HREM prevalence was high for familial ALS+/-FTD throughout Europe: Belgium 19/22 (86%), Sweden 30/41 (73%), the Netherlands 10/27 (37%) and Italy 4/20 (20%). The HREM did not affect the age at onset or survival of ALS patients. Haplotype analysis identified a common founder in all 137 HREM carriers that arose around 6300 years ago. The haplotype from which the HREM arose is intrinsically unstable with an increased number of repeats (average 8, compared with 2 for controls, P<10(-8)). We conclude that the HREM has a single founder and is the most common mutation in familial and sporadic ALS in Europe.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:European Journal of Human Genetics. - 21 : 1 (2013), p. 102-108. -
További szerzők:Newhouse, Stephen Shatunov, Aleksey Vance, Caroline Topp, Simon Johnson, Lauren Miller, Jack Lee, Younbok Troakes, Claire Scott, Kirsten M. Jones, Ashley Gray, Ian Wright, Jamie Hortobágyi Tibor (1965-) (patológus) Al-Sarraj, Safa Rogelj, Boris Powell, John Lupton, Michelle Lovestone, Simon Sapp, Peter C. Weber, Markus Nestor, Peter J. Schelhaas, Helenius J. Asbroek, Anneloor ALM ten Silani, Vincenzo Gellera, Cinzia Taroni, Franco Ticozzi, Nicola Van den Berg, Leonard H. Veldink, Jan H. Van Damme, Phillip Robberecht, Wim Shaw, Pamela J. Kirby, Janine Pall, Hardev Morrison, Karen E. Morris, Alex de Belleroche, Jacqueline Vianney de Jong, J. M. B. Baas, Frank Andersen, Peter M. Landers, John Brown, Robert H. (Jr.) Weale, Michael E. Al-Chalabi, Ammar Shaw, Christopher E.
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