Institution
University of Mainz
Education•Mainz, Rheinland-Pfalz, Germany•
About: University of Mainz is a education organization based out in Mainz, Rheinland-Pfalz, Germany. It is known for research contribution in the topics: Population & Immune system. The organization has 37673 authors who have published 71163 publications receiving 2497880 citations. The organization is also known as: Johannes Gutenberg-Universität Mainz & Universität Mainz.
Topics: Population, Immune system, Antigen, Cancer, Large Hadron Collider
Papers published on a yearly basis
Papers
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TL;DR: Visual color difference thresholds can serve as a quality control tool to guide the selection of esthetic dental materials, evaluate clinical performance, and interpret visual and instrumental findings in clinical dentistry, dental research, and subsequent standardization.
Abstract: Purpose
The aim of this prospective multicenter study was to determine 50:50% perceptibility threshold (PT) and 50:50% acceptability threshold (AT) of dental ceramic under simulated clinical settings.
Materials and Methods
The spectral radiance of 63 monochromatic ceramic specimens was determined using a non-contact spectroradiometer. A total of 60 specimen pairs, divided into 3 sets of 20 specimen pairs (medium to light shades, medium to dark shades, and dark shades), were selected for psychophysical experiment. The coordinating center and seven research sites obtained the Institutional Review Board (IRB) approvals prior the beginning of the experiment. Each research site had 25 observers, divided into five groups of five observers: dentists—D, dental students—S, dental auxiliaries—A, dental technicians—T, and lay persons—L. There were 35 observers per group (five observers per group at each site ×7 sites), for a total of 175 observers. Visual color comparisons were performed using a viewing booth. Takagi–Sugeno–Kang (TSK) fuzzy approximation was used for fitting the data points. The 50:50% PT and 50:50% AT were determined in CIELAB and CIEDE2000. The t-test was used to evaluate the statistical significance in thresholds differences.
Results
The CIELAB 50:50% PT was ΔEab = 1.2, whereas 50:50% AT was ΔEab = 2.7. Corresponding CIEDE2000 (ΔE00) values were 0.8 and 1.8, respectively. 50:50% PT by the observer group revealed differences among groups D, A, T, and L as compared with 50:50% PT for all observers. The 50:50% AT for all observers was statistically different than 50:50% AT in groups T and L.
Conclusion
A 50:50% perceptibility and ATs were significantly different. The same is true for differences between two color difference formulas ΔE00/ΔEab. Observer groups and sites showed high level of statistical difference in all thresholds.
Clinical Significance
Visual color difference thresholds can serve as a quality control tool to guide the selection of esthetic dental materials, evaluate clinical performance, and interpret visual and instrumental findings in clinical dentistry, dental research, and subsequent standardization. The importance of quality control in dentistry is reinforced by increased esthetic demands of patients and dental professionals.
627 citations
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University of California, Santa Cruz1, deCODE genetics2, National Institutes of Health3, University of Helsinki4, VU University Amsterdam5, Erasmus University Medical Center6, Estonian Biocentre7, University of Tartu8, King's College London9, University of Oxford10, Wellcome Trust Centre for Human Genetics11, University of Leicester12, Radboud University Nijmegen Medical Centre13, Wellcome Trust Sanger Institute14, Leipzig University15, VU University Medical Center16, University of Mainz17, Washington University in St. Louis18, University of Oulu19, Finnish Institute of Occupational Health20, European Bioinformatics Institute21, University of Leeds22, University of Otago23, University of Iceland24, University of Zaragoza25, University of Copenhagen26, University of Colorado Denver27, Colorado School of Public Health28, QIMR Berghofer Medical Research Institute29, Ludwig Maximilian University of Munich30
TL;DR: The authors conducted genome-wide association meta-analyses for the number of cigarettes smoked per day (CPD) in smokers and smoking initiation (n = 46,481) using samples from the ENGAGE Consortium.
Abstract: Smoking is a common risk factor for many diseases. We conducted genome-wide association meta-analyses for the number of cigarettes smoked per day (CPD) in smokers (n = 31,266) and smoking initiation (n = 46,481) using samples from the ENGAGE Consortium. In a second stage, we tested selected SNPs with in silico replication in the Tobacco and Genetics (TAG) and Glaxo Smith Kline (Ox-GSK) consortia cohorts (n = 45,691 smokers) and assessed some of those in a third sample of European ancestry (n = 9,040). Variants in three genomic regions associated with CPD (P < 5 x 10(-8)), including previously identified SNPs at 15q25 represented by rs1051730[A] (effect size = 0.80 CPD, P = 2.4 x 10(-69)), and SNPs at 19q13 and 8p11, represented by rs4105144[C] (effect size = 0.39 CPD, P = 2.2 x 10(-12)) and rs6474412-T (effect size = 0.29 CPD, P = 1.4 x 10(-8)), respectively. Among the genes at the two newly associated loci are genes encoding nicotine-metabolizing enzymes (CYP2A6 and CYP2B6) and nicotinic acetylcholine receptor subunits (CHRNB3 and CHRNA6), all of which have been highlighted in previous studies of smoking and nicotine dependence. Nominal associations with lung cancer were observed at both 8p11 (rs6474412[T], odds ratio (OR) = 1.09, P = 0.04) and 19q13 (rs4105144[C], OR = 1.12, P = 0.0006).
626 citations
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TL;DR: In cerebrovascular stroke, neuronal NOS I and cytokine‐inducible NOS II play a key role in neurodegeneration, whereas endothelial NOS III is important for maintaining cerebral blood flow and preventing neuronal injury.
Abstract: Nitric oxide (NO) is synthesized by at least three distinct isoforms of NO synthase (NOS). Their substrate and cofactor requirements are very similar. All three isoforms have some implications, physiological or pathophysiological, in the cardiovascular system. The endothelial NOS III is physiologically important for vascular homeostasis, keeping the vasculature dilated, protecting the intima from platelet aggregates and leukocyte adhesion, and preventing smooth muscle proliferation. Central and peripheral neuronal NOS I may also contribute to blood pressure regulation. Vascular disease associated with hypercholesterolaemia, diabetes, and hypertension is characterized by endothelial dysfunction and reduced endothelium-mediated vasodilation. Oxidative stress and the inactivation of NO by superoxide anions play an important role in these disease states. Supplementation of the NOS substrate L-arginine can improve endothelial dysfunction in animals and man. Also, the addition of the NOS cofactor (6R)-5,6,7, 8-tetrahydrobiopterin improves endothelium-mediated vasodilation in certain disease states. In cerebrovascular stroke, neuronal NOS I and cytokine-inducible NOS II play a key role in neurodegeneration, whereas endothelial NOS III is important for maintaining cerebral blood flow and preventing neuronal injury. In sepsis, NOS II is induced in the vascular wall by bacterial endotoxin and/or cytokines. NOS II produces large amounts of NO, which is an important mediator of endotoxin-induced arteriolar vasodilatation, hypotension, and shock.
625 citations
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TL;DR: The results suggest that microRNAs can function as signaling molecules and identify TLR7 as an essential element in a pathway that contributes to the spread of CNS damage.
Abstract: Activation of innate immune receptors by host-derived factors exacerbates CNS damage, but the identity of these factors remains elusive. We uncovered an unconventional role for the microRNA let-7, a highly abundant regulator of gene expression in the CNS, in which extracellular let-7 activates the RNA-sensing Toll-like receptor (TLR) 7 and induces neurodegeneration through neuronal TLR7. Cerebrospinal fluid (CSF) from individuals with Alzheimer’s disease contains increased amounts of let-7b, and extracellular introduction of let-7b into the CSF of wild-type mice by intrathecal injection resulted in neurodegeneration. Mice lacking TLR7 were resistant to this neurodegenerative effect, but this susceptibility to let-7 was restored in neurons transfected with TLR7 by intrauterine electroporation of Tlr7(−/−) fetuses. Our results suggest that microRNAs can function as signaling molecules and identify TLR7 as an essential element in a pathway that contributes to the spread of CNS damage.
625 citations
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TL;DR: Macrophage inflammatory protein (MIP)-1alpha was identified 15 years ago as the first of now four members of the MIP-1 CC chemokine subfamily, which are best known for their chemotactic and proinflammatory effects but can also promote homoeostasis.
624 citations
Authors
Showing all 38009 results
Name | H-index | Papers | Citations |
---|---|---|---|
Patrick W. Serruys | 186 | 2427 | 173210 |
Michael Kramer | 167 | 1713 | 127224 |
Marc Weber | 167 | 2716 | 153502 |
Klaus Müllen | 164 | 2125 | 140748 |
J. E. Brau | 162 | 1949 | 157675 |
Wolfgang Wagner | 156 | 2342 | 123391 |
Thomas Meitinger | 155 | 716 | 108491 |
Florian Holsboer | 151 | 929 | 86351 |
Jongmin Lee | 150 | 2257 | 134772 |
György Buzsáki | 150 | 446 | 96433 |
Galen D. Stucky | 144 | 958 | 101796 |
Yi Yang | 143 | 2456 | 92268 |
Brajesh C Choudhary | 143 | 1618 | 108058 |
Tim Adye | 143 | 1898 | 109010 |
Karl Jakobs | 138 | 1379 | 97670 |