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Background: Panic disorder is common (5% prevalence) and females are twice as likely to be affected as males. The heritable component of panic disorder is estimated at 48%. Glutamic acid dehydrogenase GAD1, the key enzyme for the synthesis of the inhibitory and anxiolytic neurotransmitter GABA, is supposed to influence various mental disorders, including mood and anxiety disorders. In a recent association study in depression, which is highly comorbid with panic disorder, GAD1 risk allele associations were restricted to females.
Methodology/Principal Findings: Nineteen single nucleotide polymorphisms (SNPs) tagging the common variation in GAD1 were genotyped in two independent gender and age matched case-control samples (discovery sample n = 478; replication sample n = 584). Thirteen SNPs passed quality control and were examined for gender-specific enrichment of risk alleles associated with panic disorder by using logistic regression including a genotype×gender interaction term. The latter was found to be nominally significant for four SNPs (rs1978340, rs3762555, rs3749034, rs2241165) in the discovery sample; of note, the respective minor/risk alleles were associated with panic disorder only in females. These findings were not confirmed in the replication sample; however, the genotype×gender interaction of rs3749034 remained significant in the combined sample. Furthermore, this polymorphism showed a nominally significant association with the Agoraphobic Cognitions Questionnaire sum score.
Conclusions/Significance: The present study represents the first systematic evaluation of gender-specific enrichment of risk alleles of the common SNP variation in the panic disorder candidate gene GAD1. Our tentative results provide a possible explanation for the higher susceptibility of females to panic disorder.
Cell-free expression represents an attractive method to produce large quantities of selectively labeled protein for NMR applications. Here, cell-free expression was used to label specific regions of the growth hormone secretagogue receptor (GHSR) with NMR-active isotopes. The GHSR is a member of the class A family of G protein-coupled receptors. A cell-free expression system was established to produce the GHSR in the precipitated form. The solubilized receptor was refolded in vitro and reconstituted into DMPC lipid membranes. Methionines, arginines, and histidines were chosen for 13C-labeling as they are representative for the transmembrane domains, the loops and flanking regions of the transmembrane α-helices, and the C-terminus of the receptor, respectively. The dynamics of the isotopically labeled residues was characterized by solid-state NMR measuring motionally averaged 1H-13C dipolar couplings, which were converted into molecular order parameters. Separated local field DIPSHIFT experiments under magic-angle spinning conditions using either varying cross polarization contact times or direct excitation provided order parameters for these residues showing that the C-terminus was the segment with the highest motional amplitude. The loop regions and helix ends as well as the transmembrane regions of the GHSR represent relatively rigid segments in the overall very flexible receptor molecule. Although no site resolution could be achieved in the experiments, the previously reported highly dynamic character of the receptor concluded from uniformly 13C labeled receptor samples could be further specified by this segmental labeling approach, leading to a more diversified understanding. of the receptor dynamics under equilibrium conditions
In 2010, the Conference of the Parties of the Convention on Biological Diversity agreedon the Strategic Plan for Biodiversity 2011–2020 in Aichi Prefecture, Japan. As this planapproaches its end, we discussed whether marine biodiversity and prediction studieswere nearing the Aichi Targets during the 4th World Conference on Marine Biodiversityheld in Montreal, Canada in June 2018. This article summarises the outcome of a five-day group discussion on how global marine biodiversity studies should be focusedfurther to better understand the patterns of biodiversity. We discussed and reviewedseven fundamental biodiversity priorities related to nine Aichi Targets focusing onglobal biodiversity discovery and predictions to improve and enhance biodiversitydata standards (quantity and quality), tools and techniques, spatial and temporal scaleframing, and stewardship and dissemination. We discuss how identifying biodiversityknowledge gaps and promoting efforts have and will reduce such gaps, including via theuse of new databases, tools and technology, and how these resources could be improvedin the future. The group recognised significant progress toward Target 19 in relationto scientific knowledge, but negligible progress with regard to Targets 6 to 13 whichaimed to safeguard and reduce human impacts on biodiversity.
Gastric cancer is one of the most common malignancies and a leading cause of cancer death worldwide. The prognosis of stomach cancer is generally poor as this cancer is not very sensitive to commonly used chemotherapies. Epigenetic modifications play a key role in gastric cancer and contribute to the development and progression of this malignancy. In order to explore new treatment options in this target area we have screened a library of epigenetic inhibitors against gastric cancer cell lines and identified inhibitors for the BET family of bromodomains as potent inhibitors of gastric cancer cell proliferations. Here we show that both the pan-BET inhibitor (+)-JQ1 as well as a newly developed specific isoxazole inhibitor, PNZ5, showed potent inhibition of gastric cancer cell growth. Intriguingly, we found differences in the antiproliferative response between gastric cancer cells tested derived from Brazilian patients as compared to those from Asian patients, the latter being largely resistant to BET inhibition. As BET inhibitors are entering clinical trials these findings provide the first starting point for future therapies targeting gastric cancer.
On 20th January 1964, at the Colito Army Barracks just outside Dar es salaam, 15 officers of the Tanganyika Army that was inherited from the colonial state led a mutiny against the independent Tanganyika government. One group went to the State House with the intention of forcing President Julius Nyerere to accept their demands. What would have happened if they had succeeded in entering the State House and if President Nyerere had refused to accept their demands, as he most likely would have done? Anything could have happened and in the worst case scenario Tanzanias history and indeed the history of the whole of Africa would have been seriously affected. This book is about the courage and quick thinking of Peter Bwimbo, the then head of the Presidential Protection Unit and Nyereres Chief Body Guard who, alone, planned and executed an ingenious and successful evacuation of President Nyerere and Vice President Rashid Kawawa, whisking them away from the State House before the mutineers got there. By a clever ruse he convinced the ferry operators on duty before dawn to ferry them across the Kigamboni Creek. From there they walked several miles to a hiding place in a house that was offered by an ordinary citizen and where they stayed until the situation was normalised several days later.
12 hepatics and 32 mosses are reported new to Uganda, 1 moss being also new to Africa, and 1 liverwort new to mainland Africa. Ectropothecium plumigerum (Broth.) Hedenäs is a new combination (basionym: Isopterygium plumigerum Broth.) with a new synonym Taxicaulis plumirameus Müll.Hal. nom. nud., and Taxiphyllum maniae (Renauld & Paris) M. Fleisch. is a new synonym of Taxiphyllum taxirameum (Mitt.) M.Fleisch. Three mosses are removed from the Uganda list.