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Search: WFRF:(Calvo Andrea) > (2015-2019)

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1.
  • Kehoe, Laura, et al. (author)
  • Make EU trade with Brazil sustainable
  • 2019
  • In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 364:6438, s. 341-
  • Journal article (other academic/artistic)
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2.
  • Nicolas, Aude, et al. (author)
  • Genome-wide Analyses Identify KIF5A as a Novel ALS Gene
  • 2018
  • In: Neuron. - : Cell Press. - 0896-6273 .- 1097-4199. ; 97:6, s. 1268-1283.e6
  • Journal article (peer-reviewed)abstract
    • To identify novel genes associated with ALS, we undertook two lines of investigation. We carried out a genome-wide association study comparing 20,806 ALS cases and 59,804 controls. Independently, we performed a rare variant burden analysis comparing 1,138 index familial ALS cases and 19,494 controls. Through both approaches, we identified kinesin family member 5A (KIF5A) as a novel gene associated with ALS. Interestingly, mutations predominantly in the N-terminal motor domain of KIF5A are causative for two neurodegenerative diseases: hereditary spastic paraplegia (SPG10) and Charcot-Marie-Tooth type 2 (CMT2). In contrast, ALS-associated mutations are primarily located at the C-terminal cargo-binding tail domain and patients harboring loss-of-function mutations displayed an extended survival relative to typical ALS cases. Taken together, these results broaden the phenotype spectrum resulting from mutations in KIF5A and strengthen the role of cytoskeletal defects in the pathogenesis of ALS.
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3.
  • van Rheenen, Wouter, et al. (author)
  • Genome-wide association analyses identify new risk variants and the genetic architecture of amyotrophic lateral sclerosis
  • 2016
  • In: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 48:9, s. 1043-1048
  • Journal article (peer-reviewed)abstract
    • To elucidate the genetic architecture of amyotrophic lateral sclerosis (ALS) and find associated loci, we assembled a custom imputation reference panel from whole-genome-sequenced patients with ALS and matched controls (n = 1,861). Through imputation and mixed-model association analysis in 12,577 cases and 23,475 controls, combined with 2,579 cases and 2,767 controls in an independent replication cohort, we fine-mapped a new risk locus on chromosome 21 and identified C21orf2 as a gene associated with ALS risk. In addition, we identified MOBP and SCFD1 as new associated risk loci. We established evidence of ALS being a complex genetic trait with a polygenic architecture. Furthermore, we estimated the SNP-based heritability at 8.5%, with a distinct and important role for low-frequency variants (frequency 1-10%). This study motivates the interrogation of larger samples with full genome coverage to identify rare causal variants that underpin ALS risk.
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4.
  • Canosa, Antonio, et al. (author)
  • A novel p.Ser108LeufsTer15 SOD1 mutation leading to the formation of a premature stop codon in an apparently sporadic ALS patient : insights into the underlying pathomechanisms
  • 2018
  • In: Neurobiology of Aging. - : Elsevier. - 0197-4580 .- 1558-1497. ; 72
  • Journal article (peer-reviewed)abstract
    • We report an apparently sporadic amyotrophic lateral sclerosis patient carrying a heterozygous novel frameshift SOD1 mutation (p.Ser108LeufsTer15), predicted to cause a premature protein truncation. RTPCR analysis of SOD1 mRNA and SDS-PAGE/Western blot analysis of PBMC demonstrated that mRNA from the mutant allele is expressed at levels similar to those of the wild-type allele, but the truncated protein is undetectable also in the insoluble fraction and after proteasome inhibition. Accordingly, the dismutation activity in erythrocytes is halved. Thus, the pathogenic mechanism associated with this mutation might be based on an insufficient activity of SOD1 that would make motor neurons more vulnerable to oxidative injury. However, it cannot be excluded that p.Ser108LeufsTer15 SOD1 is present in the nervous tissue and, being less charged and hence having less repulsive forces than the wild-type protein, may trigger toxic mechanisms as a consequence of its propensity to aggregate. 
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5.
  • Kenna, Kevin P., et al. (author)
  • NEK1 variants confer susceptibility to amyotrophic lateral sclerosis
  • 2016
  • In: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 48:9, s. 1037-1042
  • Journal article (peer-reviewed)abstract
    • To identify genetic factors contributing to amyotrophic lateral sclerosis (ALS), we conducted whole-exome analyses of 1,022 index familial ALS (FALS) cases and 7,315 controls. In a new screening strategy, we performed gene-burden analyses trained with established ALS genes and identified a significant association between loss-of-function (LOF) NEK1 variants and FALS risk. Independently, autozygosity mapping for an isolated community in the Netherlands identified a NEK1 p.Arg261 His variant as a candidate risk factor. Replication analyses of sporadic ALS (SALS) cases and independent control cohorts confirmed significant disease association for both p.Arg261 His (10,589 samples analyzed) and NEK1 LOF variants (3,362 samples analyzed). In total, we observed NEK1 risk variants in nearly 3% of ALS cases. NEK1 has been linked to several cellular functions, including cilia formation, DNA-damage response, microtubule stability, neuronal morphology and axonal polarity. Our results provide new and important insights into ALS etiopathogenesis and genetic etiology.
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6.
  • Lill, Christina M., et al. (author)
  • The role of TREM2 R47H as a risk factor for Alzheimer's disease, frontotemporal lobar degeneration, amyotrophic lateral sclerosis, and Parkinson's disease
  • 2015
  • In: Alzheimer's & Dementia. - : Wiley. - 1552-5260 .- 1552-5279. ; 11:12, s. 1407-1416
  • Journal article (peer-reviewed)abstract
    • A rare variant in TREM2 (p.R47H, rs75932628) was recently reported to increase the risk of Alzheimer's disease (AD) and, subsequently, other neurodegenerative diseases, i.e. frontotemporal lobar degeneration (FTLD), amyotrophic lateral sclerosis (ALS), and Parkinson's disease (PD). Here we comprehensively assessed TREM2 rs75932628 for association with these diseases in a total of 19,940 previously untyped subjects of European descent. These data were combined with those from 28 published data sets by meta-analysis. Furthermore, we tested whether rs75932628 shows association with amyloid beta (Ab42) and total-tau protein levels in the cerebrospinal fluid (CSF) of 828 individuals with AD or mild cognitive impairment. Our data show that rs75932628 is highly significantly associated with the risk of AD across 24,086 AD cases and 148,993 controls of European descent (odds ratio or OR = 2.71, P = 4.67 x 10(-25)). No consistent evidence for association was found between this marker and the risk of FTLD (OR = 2.24, P = .0113 across 2673 cases/9283 controls), PD (OR 5 1.36, P = .0767 across 8311 cases/79,938 controls) and ALS (OR 5 1.41, P = .198 across 5544 cases/7072 controls). Furthermore, carriers of the rs75932628 risk allele showed significantly increased levels of CSF-total-tau (P = .0110) but not Ab42 suggesting that TREM2's role in AD may involve tau dysfunction. (C) 2015 The Alzheimer's Association.
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7.
  • Neumayr, Andreas, et al. (author)
  • Sentinel surveillance of imported dengue via travellers to Europe 2012 to 2014 : TropNet data from the DengueTools Research Initiative
  • 2017
  • In: Eurosurveillance. - : European Centre for Disease Prevention and Control (ECDC). - 1025-496X .- 1560-7917. ; 22:1, s. 39-47
  • Journal article (peer-reviewed)abstract
    • We describe the epidemiological pattern and genetic characteristics of 242 acute dengue infections imported to Europe by returning travellers from 2012 to 2014. The overall geographical pattern of imported dengue (South-east Asia > Americas > western Pacific region > Africa) remained stable compared with 1999 to 2010. We isolated the majority of dengue virus genotypes and epidemic lineages causing outbreaks and epidemics in Asia, America and Africa during the study period. Travellers acted as sentinels for four unusual dengue outbreaks (Madeira, 2012-13; Luanda, 2013; Dar es Salaam, 2014; Tokyo, 2014). We were able to characterise dengue viruses imported from regions where currently no virological surveillance data are available. Up to 36% of travellers infected with dengue while travelling returned during the acute phase of the infection (up to 7 days after symptom onset) or became symptomatic after returning to Europe, and 58% of the patients with acute dengue infection were viraemic when seeking medical care. Epidemiological and virological data from dengue-infected international travellers can add an important layer to global surveillance efforts. A considerable number of dengue-infected travellers are viraemic after arrival back home, which poses a risk for dengue introduction and autochthonous transmission in European regions where suitable mosquito vectors are prevalent.
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8.
  • Ritacco, A., et al. (author)
  • NIKA 150 GHz polarization observations of the Crab nebula and its spectral energy distribution
  • 2018
  • In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 616
  • Journal article (peer-reviewed)abstract
    • The Crab nebula is a supernova remnant exhibiting a highly polarized synchrotron radiation at radio and millimetre wavelengths. It is the brightest source in the microwave sky with an extension of 7 by 5 arcmin, and is commonly used as a standard candle for any experiment which aims to measure the polarization of the sky. Though its spectral energy distribution has been well characterized in total intensity, polarization data are still lacking at millimetre wavelengths. We report in this paper high resolution observations (18 00 FWHM) of the Crab nebula in total intensity and linear polarization at 150 GHz with the NIKA camera. NIKA, operated at the IRAM 30 m telescope from 2012 to 2015, is a camera made of Lumped Element Kinetic Inductance Detectors (LEKIDs) observing the sky at 150 and 260 GHz. From these observations we are able to reconstruct the spatial distribution of the polarization degree and angle of the Crab nebula, which is found to be compatible with previous observations at lower and higher frequencies. Averaging across the source and using other existing data sets we find that the Crab nebula polarization angle is consistent with being constant over a wide range of frequencies with a value of -87.7 degrees +/- 0.3 in Galactic coordinates. We also present the first estimation of the Crab nebula spectral energy distribution polarized flux in a wide frequency range: 30-353 GHz. Assuming a single power law emission model we find that the polarization spectral index beta(pol) = -0.347 +/- 0.026 is compatible with the intensity spectral index beta = -0.323 +/- 0.001.
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9.
  • Simone, Roberto, et al. (author)
  • G-quadruplex-binding small molecules ameliorate C9orf72 FTD/ALS pathology invitro and invivo.
  • 2018
  • In: EMBO molecular medicine. - : EMBO. - 1757-4684 .- 1757-4676. ; 10:1, s. 22-31
  • Journal article (peer-reviewed)abstract
    • Intronic GGGGCC repeat expansions in C9orf72 are the most common known cause of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), which are characterised by degeneration of cortical and motor neurons, respectively. Repeat expansions have been proposed to cause disease by both the repeat RNA forming foci that sequester RNA-binding proteins and through toxic dipeptide repeat proteins generated by repeat-associated non-ATG translation. GGGGCC repeat RNA folds into a G-quadruplex secondary structure, and we investigated whether targeting this structure is a potential therapeutic strategy. We performed a screen that identified three structurally related small molecules that specifically stabilise GGGGCC repeat G-quadruplex RNA We investigated their effect in C9orf72 patient iPSC-derived motor and cortical neurons and show that they significantly reduce RNA foci burden and the levels of dipeptide repeat proteins. Furthermore, they also reduce dipeptide repeat proteins and improve survival invivo, in GGGGCC repeat-expressing Drosophila Therefore, small molecules that target GGGGCC repeat G-quadruplexes can ameliorate the two key pathologies associated with C9orf72 FTD/ALS These data provide proof of principle thattargeting GGGGCC repeat G-quadruplexes has therapeutic potential.
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10.
  • Aad, G, et al. (author)
  • 2015
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  • Result 1-10 of 10
Type of publication
journal article (9)
Type of content
peer-reviewed (8)
other academic/artistic (1)
Author/Editor
Calvo, Andrea (6)
Al-Chalabi, Ammar (4)
Shatunov, Aleksey (4)
Silani, Vincenzo (4)
Veldink, Jan H. (4)
van den Berg, Leonar ... (4)
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Shaw, Christopher E. (4)
Shaw, Pamela J. (4)
Morrison, Karen E. (4)
van Rheenen, Wouter (4)
Chio, Adriano (4)
Andersen, Peter M. (3)
D'Alfonso, Sandra (3)
Fogh, Isabella (3)
Hardiman, Orla (3)
Ticozzi, Nicola (3)
Landers, John E. (3)
Glass, Jonathan D. (3)
Ratti, Antonia (3)
Meitinger, Thomas (3)
Ludolph, Albert C. (3)
Weishaupt, Jochen H. (3)
Robberecht, Wim (3)
Mora, Gabriele (3)
van Es, Michael A (3)
McLaughlin, Russell ... (3)
Cereda, Cristina (3)
Jones, Ashley R. (2)
van Damme, Philip (2)
Corcia, Philippe (2)
de Carvalho, Mamede (2)
Weber, Markus (2)
Taroni, Franco (2)
van Blitterswijk, Ma ... (2)
Talbot, Kevin (2)
Rouleau, Guy A. (2)
Rademakers, Rosa (2)
Al-Sarraj, Safa (2)
King, Andrew (2)
Hardy, John (2)
Moglia, Cristina (2)
Trojanowski, John Q (2)
Corrado, Lucia (2)
Troakes, Claire (2)
Strom, Tim M. (2)
Malaspina, Andrea (2)
Turner, Martin R (2)
Casale, Federico (2)
Diekstra, Frank P (2)
Sapp, Peter C (2)
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University
Umeå University (6)
University of Gothenburg (2)
Royal Institute of Technology (2)
Stockholm University (1)
Linköping University (1)
Lund University (1)
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Mid Sweden University (1)
Chalmers University of Technology (1)
Swedish University of Agricultural Sciences (1)
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Language
English (10)
Research subject (UKÄ/SCB)
Medical and Health Sciences (7)
Natural sciences (2)
Engineering and Technology (1)
Social Sciences (1)

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