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- 2019
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Tidskriftsartikel (refereegranskat)
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- Weinstein, John N., et al.
(författare)
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The cancer genome atlas pan-cancer analysis project
- 2013
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Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 45:10, s. 1113-1120
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Forskningsöversikt (refereegranskat)abstract
- The Cancer Genome Atlas (TCGA) Research Network has profiled and analyzed large numbers of human tumors to discover molecular aberrations at the DNA, RNA, protein and epigenetic levels. The resulting rich data provide a major opportunity to develop an integrated picture of commonalities, differences and emergent themes across tumor lineages. The Pan-Cancer initiative compares the first 12 tumor types profiled by TCGA. Analysis of the molecular aberrations and their functional roles across tumor types will teach us how to extend therapies effective in one cancer type to others with a similar genomic profile. © 2013 Nature America, Inc. All rights reserved.
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- Eisen, Andrew, et al.
(författare)
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SOD1 gene mutations in ALS patients from British Columbia, Canada : clinical features, neurophysiology and ethical issues in management
- 2008
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Ingår i: Amyotrophic Lateral Sclerosis and other Motor Neuron Disorders. - : Informa UK Limited. - 1466-0822 .- 1743-4483. ; 9:2, s. 108-119
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Tidskriftsartikel (refereegranskat)abstract
- Two hundred and fifty-four ALS patients from British Columbia, Canada were screened for mutations in the gene encoding the enzyme superoxide dismutase type 1 (SOD1). Thirteen patients (5.1%) carried one of six missense mutations (A4V, G72C, D76Y, D90A, C111Y, I113T). Mutations were found both in sporadic and familial ALS cases. Atypical clinical features delayed diagnosis in some cases. The demographic and clinical features of the mutation carrying index cases are summarized, and compared with those of screened patients without mutations. The phenotypic variability between SOD1 mutation carrying patients in this study is dramatic, even among patients with the same mutation This underlines the hypothesis that ALS is a biologically heterogeneous disorder in which genetics, environment and ageing all interrelate to form the final clinical phenotype.
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- Nounu, Aayah, et al.
(författare)
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Salicylic Acid and Risk of Colorectal Cancer : A Two-Sample Mendelian Randomization Study
- 2021
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Ingår i: Nutrients. - : MDPI. - 2072-6643. ; 13:11
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Tidskriftsartikel (refereegranskat)abstract
- Salicylic acid (SA) has observationally been shown to decrease colorectal cancer (CRC) risk. Aspirin (acetylsalicylic acid, that rapidly deacetylates to SA) is an effective primary and secondary chemopreventive agent. Through a Mendelian randomization (MR) approach, we aimed to address whether levels of SA affected CRC risk, stratifying by aspirin use. A two-sample MR analysis was performed using GWAS summary statistics of SA (INTERVAL and EPIC-Norfolk, N = 14,149) and CRC (CCFR, CORECT, GECCO and UK Biobank, 55,168 cases and 65,160 controls). The DACHS study (4410 cases and 3441 controls) was used for replication and stratification of aspirin-use. SNPs proxying SA were selected via three methods: (1) functional SNPs that influence the activity of aspirin-metabolising enzymes; (2) pathway SNPs present in enzymes' coding regions; and (3) genome-wide significant SNPs. We found no association between functional SNPs and SA levels. The pathway and genome-wide SNPs showed no association between SA and CRC risk (OR: 1.03, 95% CI: 0.84-1.27 and OR: 1.08, 95% CI: 0.86-1.34, respectively). Results remained unchanged upon aspirin use stratification. We found little evidence to suggest that an SD increase in genetically predicted SA protects against CRC risk in the general population and upon stratification by aspirin use.
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- Smith, Hillary H., et al.
(författare)
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The grayness of the origin of life
- 2021
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Ingår i: Life. - : MDPI AG. - 2075-1729. ; 11:6
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Tidskriftsartikel (refereegranskat)abstract
- In the search for life beyond Earth, distinguishing the living from the non-living is paramount. However, this distinction is often elusive, as the origin of life is likely a stepwise evolutionary process, not a singular event. Regardless of the favored origin of life model, an inherent “grayness” blurs the theorized threshold defining life. Here, we explore the ambiguities between the biotic and the abiotic at the origin of life. The role of grayness extends into later transitions as well. By recognizing the limitations posed by grayness, life detection researchers will be better able to develop methods sensitive to prebiotic chemical systems and life with alternative biochemistries.
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| 10. |
- Stewart, Heather G, et al.
(författare)
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Corticomotoneuronal dysfunction in ALS patients with different SOD1 mutations.
- 2006
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Ingår i: Clinical Neurophysiology. - : Elsevier BV. - 1388-2457 .- 1872-8952. ; 117:8, s. 1850-1861
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To examine corticomotoneuronal function in amyotrophic lateral sclerosis (ALS) patients carrying superoxide dismutase 1 (SOD1) mutations using peristimulus time histograms (PSTH). METHODS: Six I113T, 3 A4V, one G41D and one G114A patient were studied along with 21 healthy control subjects. Analyses included comparison with previously reported data from 8 D90A homozygous and 12 sporadic ALS (SALS) patients examined by the authors using identical methodology. RESULTS: Cortical threshold was significantly reduced in A4V patients (41.3%) compared to I113T (58%), SALS (57%) and D90A (71%) patients, as well as healthy controls (49.7%). Estimated excitatory postsynaptic potentials (EPSPs) were significantly larger in A4V patients (4.39 mV) compared to healthy controls (2.95 mV), I113T (2.71 mV) and SALS (2.39 mV) patients. Clinical features and PSTH parameters in I113T were similar to SALS, however, PSTH primary peaks (PP) were significantly more dispersed, 9.5 ms compared to 4ms in SALS. PSTHs from single G41D and G114A patients were unremarkable, apart from large EPSP amplitudes in the G114A patient. CONCLUSIONS: ALS patients with A4V and I113T SOD1 mutations have distinctive corticomotoneuronal changes that are different from those in D90A homozygous and SALS patients. SIGNIFICANCE: PSTH studies should be considered for future in vivo studies of SOD1 pathophysiology in ALS.
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