Institution
Katholieke Universiteit Leuven
Education•Leuven, Belgium•
About: Katholieke Universiteit Leuven is a education organization based out in Leuven, Belgium. It is known for research contribution in the topics: Population & Context (language use). The organization has 61109 authors who have published 176584 publications receiving 6210872 citations.
Topics: Population, Context (language use), Transplantation, Medicine, CMOS
Papers published on a yearly basis
Papers
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TL;DR: Evidence is provided that Optic Atrophy 1 (OPA1), a profusion dynamin-related protein of the inner mitochondrial membrane mutated in dominant optic atrophy, protects from apoptosis by preventing cytochrome c release independently from mitochondrial fusion.
1,444 citations
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TL;DR: The fully integrated functionality and small size of Neuropixels probes allowed large populations of neurons from several brain structures to be recorded in freely moving animals and opens a path towards recording of brain-wide neural activity during behaviour.
Abstract: New silicon probes known as Neuropixels are shown to record from hundreds of neurons simultaneously in awake and freely moving rodents. Sensory, motor and cognitive operations involve the coordinated action of large neuronal populations across multiple brain regions. Existing technologies reliably measure activity from a relatively small number of neurons with high spatial and temporal resolution, or from a large volume of neurons with low resolution. Timothy Harris and colleagues describe the design, fabrication and performance of Neuropixels, a silicon probe that can measure well-isolated neural activity from hundreds of neurons. They integrated these probes into a lightweight system that could record activity simultaneously and with high fidelity from hundreds of neurons in awake and freely moving rodents. Sensory, motor and cognitive operations involve the coordinated action of large neuronal populations across multiple brain regions in both superficial and deep structures1,2. Existing extracellular probes record neural activity with excellent spatial and temporal (sub-millisecond) resolution, but from only a few dozen neurons per shank. Optical Ca2+ imaging3,4,5 offers more coverage but lacks the temporal resolution needed to distinguish individual spikes reliably and does not measure local field potentials. Until now, no technology compatible with use in unrestrained animals has combined high spatiotemporal resolution with large volume coverage. Here we design, fabricate and test a new silicon probe known as Neuropixels to meet this need. Each probe has 384 recording channels that can programmably address 960 complementary metal–oxide–semiconductor (CMOS) processing-compatible low-impedance TiN6 sites that tile a single 10-mm long, 70 × 20-μm cross-section shank. The 6 × 9-mm probe base is fabricated with the shank on a single chip. Voltage signals are filtered, amplified, multiplexed and digitized on the base, allowing the direct transmission of noise-free digital data from the probe. The combination of dense recording sites and high channel count yielded well-isolated spiking activity from hundreds of neurons per probe implanted in mice and rats. Using two probes, more than 700 well-isolated single neurons were recorded simultaneously from five brain structures in an awake mouse. The fully integrated functionality and small size of Neuropixels probes allowed large populations of neurons from several brain structures to be recorded in freely moving animals. This combination of high-performance electrode technology and scalable chip fabrication methods opens a path towards recording of brain-wide neural activity during behaviour.
1,443 citations
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TL;DR: In this article, a meta-analysis of problem-based learning in tertiary education is presented, showing that there is a robust positive effect from PBL on the skills of students and no single study reported negative effects.
1,440 citations
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TL;DR: In this paper, the high thermal gradients occurring during SLM lead to a very fine microstructure with submicron-sized cells, which can be modified to a weak cube texture along the building and scanning directions when a rotation of 90° of the scanning vectors within or between the layers is applied.
1,431 citations
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Queen Mary University of London1, Winthrop-University Hospital2, Karolinska Institutet3, Boston Children's Hospital4, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico5, Harvard University6, University of Colorado Denver7, McMaster University8, University of Auckland9, Katholieke Universiteit Leuven10, University of Tampere11, University of Birmingham12, Pennsylvania State University13, University of Otago14, QIMR Berghofer Medical Research Institute15, Dartmouth College16, Menzies Research Institute17, Medical University of Łódź18, University of Delhi19, Jikei University School of Medicine20
TL;DR: Vitamin D supplementation was safe and it protected against acute respiratory tract infection overall and patients who were very vitamin D deficient and those not receiving bolus doses experienced the most benefit.
Abstract: Objectives To assess the overall effect of vitamin D supplementation on risk of acute respiratory tract infection, and to identify factors modifying this effect. Design Systematic review and meta-analysis of individual participant data (IPD) from randomised controlled trials. Data sources Medline, Embase, the Cochrane Central Register of Controlled Trials, Web of Science, ClinicalTrials.gov, and the International Standard Randomised Controlled Trials Number registry from inception to December 2015. Eligibility criteria for study selection Randomised, double blind, placebo controlled trials of supplementation with vitamin D 3 or vitamin D 2 of any duration were eligible for inclusion if they had been approved by a research ethics committee and if data on incidence of acute respiratory tract infection were collected prospectively and prespecified as an efficacy outcome. Results 25 eligible randomised controlled trials (total 11 321 participants, aged 0 to 95 years) were identified. IPD were obtained for 10 933 (96.6%) participants. Vitamin D supplementation reduced the risk of acute respiratory tract infection among all participants (adjusted odds ratio 0.88, 95% confidence interval 0.81 to 0.96; P for heterogeneity Conclusions Vitamin D supplementation was safe and it protected against acute respiratory tract infection overall. Patients who were very vitamin D deficient and those not receiving bolus doses experienced the most benefit. Systematic review registration PROSPERO CRD42014013953.
1,431 citations
Authors
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Name | H-index | Papers | Citations |
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Eugene Braunwald | 230 | 1711 | 264576 |
Joseph L. Goldstein | 207 | 556 | 149527 |
Rakesh K. Jain | 200 | 1467 | 177727 |
Stefan Schreiber | 178 | 1233 | 138528 |
Masayuki Yamamoto | 171 | 1576 | 123028 |
Jun Wang | 166 | 1093 | 141621 |
David R. Jacobs | 165 | 1262 | 113892 |
Klaus Müllen | 164 | 2125 | 140748 |
Peter Carmeliet | 164 | 844 | 122918 |
Hua Zhang | 163 | 1503 | 116769 |
William J. Sandborn | 162 | 1317 | 108564 |
Elliott M. Antman | 161 | 716 | 179462 |
Tobin J. Marks | 159 | 1621 | 111604 |
Ian A. Wilson | 158 | 971 | 98221 |
Johan Auwerx | 158 | 653 | 95779 |