Institution
Lund University
Education•Lund, Sweden•
About: Lund University is a education organization based out in Lund, Sweden. It is known for research contribution in the topics: Population & Cancer. The organization has 42345 authors who have published 124676 publications receiving 5016438 citations. The organization is also known as: Lunds Universitet & University of Lund.
Topics: Population, Cancer, Breast cancer, Insulin, Transplantation
Papers published on a yearly basis
Papers
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TL;DR: A reaction scheme where electrophilic activation of carbon dioxide plays an important role in the hydration reaction is presented and the protonized oxygen of the bicarbonate is forced upon the zinc ion, thereby facilitating cleavage of the carbon-oxygen bond.
490 citations
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TL;DR: It is proposed that the basal ganglia-thalamocortical motor circuits through the putamen are likely to play a key role in stuttered, and the core dysfunction in stuttering is suggested to be impaired ability of the basal Ganglia to produce timing cues for the initiation of the next motor segment in speech.
490 citations
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TL;DR: The role of coherence in determining the efficiency of charge separation in the plant photosystem II reaction centre is elucidated by comprehensively combining experiment (two-dimensional electronic spectroscopy) and theory (Redfield theory) and it is proposed that this coherent mechanism will inspire the development of new energy technologies.
Abstract: The crucial step in the conversion of solar to chemical energy in photosynthesis takes place in the reaction centre, where the absorbed excitation energy is converted into a stable charge-separated state by ultrafast electron transfer events. However, the fundamental mechanism responsible for the near-unity quantum efficiency of this process is unknown. Here we elucidate the role of coherence in determining the efficiency of charge separation in the plant photosystem II reaction centre by comprehensively combining experiment (two-dimensional electronic spectroscopy) and theory (Redfield theory). We reveal the presence of electronic coherence between excitons as well as between exciton and charge-transfer states that we argue to be maintained by vibrational modes. Furthermore, we present evidence for the strong correlation between the degree of electronic coherence and efficient and ultrafast charge separation. We propose that this coherent mechanism will inspire the development of new energy technologies.
489 citations
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TL;DR: It is suggested that children born after IVF have an increased risk of developing neurological problems, especially cerebral palsy, largely due to the high frequency of twin pregnancies, low birthweight, and prematurity among babies born afterIVF.
489 citations
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TL;DR: This work describes a framework, using quantitative kinetic assays and global fitting, to determine and to verify a molecular mechanism for aggregation reactions that is compatible with experimental kinetic data and provides an online platform that enables robust global analysis of kinetic data without the need for extensive programming or detailed mathematical knowledge.
Abstract: The elucidation of the molecular mechanisms by which soluble proteins convert into their amyloid forms is a fundamental prerequisite for understanding and controlling disorders that are linked to protein aggregation, such as Alzheimer's and Parkinson's diseases. However, because of the complexity associated with aggregation reaction networks, the analysis of kinetic data of protein aggregation to obtain the underlying mechanisms represents a complex task. Here we describe a framework, using quantitative kinetic assays and global fitting, to determine and to verify a molecular mechanism for aggregation reactions that is compatible with experimental kinetic data. We implement this approach in a web-based software, AmyloFit. Our procedure starts from the results of kinetic experiments that measure the concentration of aggregate mass as a function of time. We illustrate the approach with results from the aggregation of the β-amyloid (Aβ) peptides measured using thioflavin T, but the method is suitable for data from any similar kinetic experiment measuring the accumulation of aggregate mass as a function of time; the input data are in the form of a tab-separated text file. We also outline general experimental strategies and practical considerations for obtaining kinetic data of sufficient quality to draw detailed mechanistic conclusions, and the procedure starts with instructions for extensive data quality control. For the core part of the analysis, we provide an online platform (http://www.amylofit.ch.cam.ac.uk) that enables robust global analysis of kinetic data without the need for extensive programming or detailed mathematical knowledge. The software automates repetitive tasks and guides users through the key steps of kinetic analysis: determination of constraints to be placed on the aggregation mechanism based on the concentration dependence of the aggregation reaction, choosing from several fundamental models describing assembly into linear aggregates and fitting the chosen models using an advanced minimization algorithm to yield the reaction orders and rate constants. Finally, we outline how to use this approach to investigate which targets potential inhibitors of amyloid formation bind to and where in the reaction mechanism they act. The protocol, from processing data to determining mechanisms, can be completed in <1 d.
489 citations
Authors
Showing all 42777 results
Name | H-index | Papers | Citations |
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Yi Chen | 217 | 4342 | 293080 |
Fred H. Gage | 216 | 967 | 185732 |
Kari Stefansson | 206 | 794 | 174819 |
Mark I. McCarthy | 200 | 1028 | 187898 |
Ruedi Aebersold | 182 | 879 | 141881 |
Jie Zhang | 178 | 4857 | 221720 |
Feng Zhang | 172 | 1278 | 181865 |
Martin G. Larson | 171 | 620 | 117708 |
Michael Snyder | 169 | 840 | 130225 |
Unnur Thorsteinsdottir | 167 | 444 | 121009 |
Anders Björklund | 165 | 769 | 84268 |
Carl W. Cotman | 165 | 809 | 105323 |
Dennis R. Burton | 164 | 683 | 90959 |
Jaakko Kaprio | 163 | 1532 | 126320 |
Panos Deloukas | 162 | 410 | 154018 |