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Université de Fribourg

Effects of the poly(ADP-ribose) polymerase inhibitor olaparib in cerulein-induced pancreatitis

Ahmad, Akbar ; Haas De Mello, Aline ; Szczesny, Bartosz ; Törö, Gábor ; Marcatti, Michela ; Druzhyna, Nadiya ; Liaudet, Lucas ; Tarantini, Stefano ; Salomao, Reinaldo ; Garcia Soriano, Francisco ; Szabo, Csaba

In: Shock, 2020, vol. 53, no. 5, p. 653–665

Objective: Activation of the constitutive nuclear and mitochondrial enzyme poly (ADP- ribose) polymerase (PARP) has been implicated in the pathogenesis of cell dysfunction, inflammation, and organ failure in various forms of critical illness. The objective of our study was to evaluate the efficacy and safety of the clinically approved PARP inhibitor olaparib in an experimental model of...

Université de Fribourg

The woody planet : from past triumph to manmade decline

Fazan, Laurence ; Song, Yi-Gang ; Kozlowski, Gregor

In: Plants, 2020, vol. 9, no. 11, p. 1593

Woodiness evolved in land plants approximately 400 Mya, and very soon after this evolutionary invention, enormous terrestrial surfaces on Earth were covered by dense and luxurious forests. Forests store close to 80% of the biosphere’s biomass, and more than 60% of the global biomass is made of wood (trunks, branches and roots). Among the total number of ca. 374,000 plant species worldwide,...

Université de Fribourg

Methyl-branched lipids promote the membrane adsorption of α-synuclein by enhancing shallow lipid-packing defects

Garten, Matthias ; Prévost, Coline ; Cadart, Clotilde ; Gautier, Romain ; Bousset, Luc ; Melki, Ronald ; Bassereau, Patricia ; Vanni, Stefano

In: Physical Chemistry Chemical Physics, 2015, vol. 17, no. 24, p. 15589–15597

Alpha-synuclein (AS) is a synaptic protein that is directly involved in Parkinson's disease due to its tendency to form protein aggregates. Since AS aggregation can be dependent on the interactions between the protein and the cell plasma membrane, elucidating the membrane binding properties of AS is of crucial importance to establish the molecular basis of AS aggregation into toxic fibrils....

Université de Fribourg

Absence of parvalbumin increases mitochondria volume and branching of dendrites in inhibitory Pvalb neurons in vivo: a point of convergence of autism spectrum disorder (ASD) risk gene phenotypes

Janickova, Lucia ; Rechberger, Karin Farah ; Wey, Lucas ; Schwaller, Beat

In: Molecular Autism, 2020, vol. 11, no. 1, p. 47

In fast firing, parvalbumin (PV)-expressing (Pvalb) interneurons, PV acts as an intracellular Ca2+ signal modulator with slow-onset kinetics. In Purkinje cells of PV−/− mice, adaptive/homeostatic mechanisms lead to an increase in mitochondria, organelles equally capable of delayed Ca2+ sequestering/buffering. An inverse regulation of PV and mitochondria likewise operates in cell model...

Université de Fribourg

Anatomic analysis of the internal and external aspects of the pterion

Uz, Aysun ; Korkmaz, Ali Can ; Filgueira, Luis ; Guner, Mehmet Ali ; Tubbs, Richard Shane ; Demirciler, Ayse Karatas

In: World Neurosurgery, 2020, vol. 137, p. 84–88

Objective: The pterion is an H-shaped suture complex. This study's goal was to determine the location of its external and internal surfaces and extension and emphasize and discuss its surgical importance.Methods: Fifty dried adult human skulls were obtained from the Department of Anatomy. A 2-mm drill bit was placed externally over the pterion, and the pterion was drilled through the bone...

Université de Fribourg

3-Mercaptopyruvate sulfurtransferase supports endothelial cell angiogenesis and bioenergetics

Abdollahi Govar, Armita ; Törő, Gábor ; Szaniszlo, Peter ; Pavlidou, Athanasia ; Bibli, Sofia‐Iris ; Thanki, Ketan ; Resto, Vicente A. ; Chao, Celia ; Hellmich, Mark R. ; Szabo, Csaba ; Papapetropoulos, Andreas ; Módis, Katalin

In: British Journal of Pharmacology, 2020, vol. 177, no. 4, p. 866–883

During angiogenesis, quiescent endothelial cells (ECs) are activated by various stimuli to form new blood vessels from pre‐existing ones in physiological and pathological conditions. Many research groups have shown that hydrogen sulfide (H2S), the newest member of the gasotransmitter family, acts as a proangiogenic factor. To date, very little is known about the regulatory role of...

Université de Fribourg

Parvalbumin expression in oligodendrocyte-like CG4 cells causes a reduction in mitochondrial volume, attenuation in reactive oxygen species production and a decrease in cell processes’ length and branching

Lichvarova, Lucia ; Blum, Walter ; Schwaller, Beat ; Szabolcsi, Viktoria

In: Scientific Reports, 2019, vol. 9, no. 1, p. 10603

Forebrain glial cells - ependymal cells and astrocytes -acquire upon injury- a “reactive” phenotype associated with parvalbumin (PV) upregulation. Since free radicals, e.g. reactive oxygen species (ROS) play a role in the pathogenesis of multiple sclerosis, and that PV-upregulation in glial cells is inversely correlated with the level of oxidative stress, we hypothesized that...

Université de Fribourg

H2S, a Bacterial Defense Mechanism against the Host Immune Response

Toliver-Kinsky, Tracy ; Cui, Weihua ; Törö, Gabor ; Lee, Seung-Jin ; Shatalin, Konstantin ; Nudler, Evgeny ; Szabo, Csaba

In: Infection and Immunity, 2019, vol. 87, no. 1, p. e00272-18

The biological mediator hydrogen sulfide (H2S) is produced by bacteria and has been shown to be cytoprotective against oxidative stress and to increase the sensitivity of various bacteria to a range of antibiotic drugs. Here we evaluated whether bacterial H2S provides resistance against the immune response, using two bacterial species that are common sources of nosocomial infections,...

Università della Svizzera italiana

Human IFN-γ immunity to mycobacteria is governed by both IL-12 and IL-23

Markle, Janet G. ; Martínez-Barricarte, Rubén ; Ma, Cindy S. ; Deenick, Elissa K. ; Ramírez-Alejo, Noé ; Mele, Federico ; Latorre, Daniela ; Mahdaviani, Seyed Alireza ; Aytekin, Caner ; Mansouri, Davood ; Bryant, Vanessa L. ; Jabot-Hanin, Fabienne ; Deswarte, Caroline ; Nieto-Patlán, Alejandro ; Surace, Laura ; Kerner, Gaspard ; Itan, Yuval ; Jovic, Sandra ; Avery, Danielle T. ; Wong, Natalie ; Rao, Geetha ; Patin, Etienne ; Okada, Satoshi ; Bigio, Benedetta ; Boisson, Bertrand ; Rapaport, Franck ; Seeleuthner, Yoann ; Schmidt, Monika ; Ikinciogullari, Aydan ; Dogu, Figen ; Tanir, Gonul ; Tabarsi, Payam ; Bloursaz, Mohammed Reza ; Joseph, Julia K. ; Heer, Avneet ; Kong, Xiao-Fei ; Migaud, Mélanie ; Lazarov, Tomi ; Geissmann, Frédéric ; Fleckenstein, Bernhard ; Lindestam Arlehamn, Cecilia ; Sette, Alessandro ; Puel, Anne ; Emile, Jean-François ; Vosse, Esther van de ; Quintana-Murci, Lluis ; Di Santo, James P. ; Abel, Laurent ; Boisson-Dupuis, Stéphanie ; Bustamante, Jacinta ; Tangye, Stuart G. ; Sallusto, Federica ; Casanova, Jean-Laurent

In: Science Immunology, 2018, vol. 3, no. 30, p. eaau6759

Hundreds of patients with autosomal recessive, complete IL-12p40 or IL-12Rß1 deficiency have been diagnosed over the last 20 years. They typically suffer from invasive mycobacteriosis and, occasionally, from mucocutaneous candidiasis. Susceptibility to these infections is thought to be due to impairments of IL- 12–dependent IFN-? immunity and IL-23–dependent IL-17A/IL-17F immunity,...

Consortium of Swiss Academic Libraries

Fast PRISM: Branch and Bound Hough Transform for Object Class Detection

Lehmann, Alain ; Leibe, Bastian ; Van Gool, Luc

In: International Journal of Computer Vision, 2011, vol. 94, no. 2, p. 175-197