Debrecen, Hungary

Debrecen University
Debrecen, Hungary

The University of Debrecen is a university located in Debrecen, Hungary. It is the oldest continuously operating institution of higher education in Hungary . The university has a well established programme in the English language for international students, particularly in the Medical field, which first established education in English in 1986. There are nearly 4000 international students studying at the university.Until 2014 technical Academy Awards have been awarded to five former students.The university also has a Basic Medicine campus in Geochang County, South Korea. Wikipedia.

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Pal B.,Debrecen University
Frontiers in Cellular Neuroscience | Year: 2015

In the last few decades, knowledge about astrocytic functions has significantly increased. It was demonstrated that astrocytes are not passive elements of the central nervous system (CNS), but active partners of neurons. There is a growing body of knowledge about the calcium excitability of astrocytes, the actions of different gliotransmitters and their release mechanisms, as well as the participation of astrocytes in the regulation of synaptic functions and their contribution to synaptic plasticity. However, astrocytic functions are even more complex than being a partner of the “tripartite synapse,” as they can influence extrasynaptic neuronal currents either by releasing substances or regulating ambient neurotransmitter levels. Several types of currents or changes of membrane potential with different kinetics and via different mechanisms can be elicited by astrocytic activity. Astrocyte-dependent phasic or tonic, inward or outward currents were described in several brain areas. Such currents, together with the synaptic actions of astrocytes, can contribute to neuromodulatory mechanisms, neurosensory and -secretory processes, cortical oscillatory activity, memory, and learning or overall neuronal excitability. This mini-review is an attempt to give a brief summary of astrocyte-dependent extrasynaptic neuronal currents and their possible functional significance. © 2015 Pál.

Bai P.,Debrecen University | Bai P.,Hungarian Academy of Sciences | Canto C.,Nestlé
Cell Metabolism | Year: 2012

While originally described as DNA damage repair agents, recent data suggest a role for poly(ADP-ribose) polymerase (PARP) enzymes in metabolic regulation by influencing mitochondrial function and oxidative metabolism. Here we review how PARP activity has a major metabolic impact and the role of PARP-1 and PARP-2 in diverse metabolic complications. © 2012 Elsevier Inc.

Angeli I.,Debrecen University | Marinova K.P.,Joint Institute for Nuclear Research
Atomic Data and Nuclear Data Tables | Year: 2013

The present table contains experimental root-mean-square (rms) nuclear charge radii R obtained by combined analysis of two types of experimental data: (i) radii changes determined from optical and, to a lesser extent, Kα X-ray isotope shifts and (ii) absolute radii measured by muonic spectra and electronic scattering experiments. The table combines the results of two working groups, using respectively two different methods of evaluation, published in ADNDT earlier. It presents an updated set of rms charge radii for 909 isotopes of 92 elements from 1H to 96Cm together, when available, with the radii changes from optical isotope shifts. Compared with the last published tables of R-values from 2004 (799 ground states), many new data are added due to progress recently achieved by laser spectroscopy up to early 2011. The radii changes in isotopic chains for He, Li, Be, Ne, Sc, Mn, Y, Nb, Bi have been first obtained in the last years and several isotopic sequences have been recently extended to regions far off stability, (e.g., Ar, Mo, Sn, Te, Pb, Po). © 2012 Elsevier Inc.

Bai P.,Lendulet Cellular Metabolism Research Group | Bai P.,Debrecen University
Molecular Cell | Year: 2015

The protein family of poly(ADP-ribose) polymerases (PARPs) or diphtheria toxin-type ADP-ribose transferases (ARTDs) are multidomain proteins originally identified as DNA repair factors. There are 17 PARP enzymes in humans, and it is now evident that PARPs undertake more tasks than DNA repair. The aim of this review is to give a comprehensive view of the biological roles of the PARP family starting from the simplest biochemical reactions to complex regulatory circuits. Special attention will be laid on discussing linkage of PARP enzymes with tumor biology, oxidative stress, inflammatory, and metabolic diseases. A better understanding of PARP-mediated processes and pathologies may help in identifying new pathways and, by these, new targets to combat diseases that affect large populations and seriously shorten life expectancy and the quality of life, such as cancer, metabolic, or inflammatory diseases. © 2015 Elsevier Inc.

Banfalvi G.,Debrecen University
Cancer metastasis reviews | Year: 2012

Parathymic lymph nodes as potential sites of tumor progression have been neglected in humans. We have established a rat renal capsule-parathymic lymph node model to study in vivo metastasis. Epithelial liver carcinoma (HeDe) and mesenchymal mesoblastic nephroma (NeDe) cell lines have been established after inducing chemical carcinogenesis in newborn Fisher 344 inbred rats by N-nitrosodimethylamine. Implanting the exact number of tumor cells (HeDe, NeDe) under the renal capsule allowed the standardization and timing of metastatic development. Tumor cells released from the primary tumor in the peritoneal cavity were drained to the parathymic lymph nodes (PTNs) as sentinel lymph nodes. Similarly, tumor cells injected i.p. were engulfed by macrophages, drained through the transdiaphragmatic channels, and transported to the thoracal lymphatics, primarily to PTNs. Tumor cells after transdiaphragmic drainage can enter both anterior mammary and parathymic sentinel lymph nodes. The potential common origin can shed new light on the metastatic cell progression of PTNs and mammary tumors.

Szabo A.,Debrecen University
Frontiers in Immunology | Year: 2015

Classical psychedelics are psychoactive substances, which, besides their psychopharmacological activity, have also been shown to exert significant modulatory effects on immune responses by altering signaling pathways involved in inflammation, cellular proliferation and cell survival via activating NF-κB and MAPKs. Recently, several neurotransmitter receptors involved in the pharmacology of psychedelics, such as serotonin and sigma-1 receptors, have also been shown to play crucial roles in numerous immunological processes. This emerging field also offers promising treatment modalities in the therapy of various diseases including autoimmune and chronic inflammatory conditions, infections, and cancer. However, the scarcity of available review literature renders the topic unclear and obscure, mostly posing psychedelics as illicit drugs of abuse and not as physiologically relevant molecules or as possible agents of future pharmacotherapies. In this paper, the immunomodulatory potential of classical serotonergic psychedelics, including N, N dimethyltryptamine (DMT), 5-methoxy-N, N-dimethyltryptamine (5-MeO-DMT), lysergic acid diethylamide (LSD), 2,5-dimethoxy-4-iodoamphetamine (DOI) and 3,4-methylenedioxy-methamphetamine (MDMA) will be discussed from a perspective of molecular immunology and pharmacology. Special attention will be given to the functional interaction of serotonin and sigma-1 receptors and their cross-talk with Toll-like and RIG-I like pattern recognition receptor-mediated signaling. Furthermore, novel approaches will be suggested feasible for the treatment of diseases with chronic inflammatory etiology and pathology, such as atherosclerosis, rheumatoid arthritis, multiple sclerosis, schizophrenia, depression and Alzheimer's disease. © 2015 Szabo.

Banfalvi G.,Debrecen University
Cancer and Metastasis Reviews | Year: 2012

The ancient view regarding breast cancer as a metastasis has not been supported so far by experimental evidence. We have implanted nephroblastoma tumor cells resulting in a rat metastatic kidney capsule-parathymic lymph node (PTN) model. India ink implantation confirmed the lymphatic connection between the primary tumor of the kidney and PTNs. 18F-FDG glucose analog distribution provided further evidence that the first metastatic sites of distant tumor progression are PTNs. Tumor invasion caused disruptions in the tissue of the primary renal tumor, releasing cancer cells into the peritoneal cavity. Colloidal particles, among them bacteria and India ink, crossed transdiaphragmatic channels drained from the peritonel cavity to the thoracic lymphatics and entered not only in the parathymic lymph nodes but also in the anterior mammary lymph nodes. The kidney capsule-PTN complex is reflecting a so far unknown mechanism of tumor development and suggests a similar tumor progression directed towards mammary lymph nodes. The mammalian tumor model provides a reasonable explanation for breast cancer development viewed as a metastasis, rather than a primary tumor. © 2012 Springer Science+Business Media, LLC.

Netea M.G.,Radboud University Nijmegen | Marodi L.,Debrecen University
Trends in Immunology | Year: 2010

Candida species are major causes of infections affecting either body surfaces or the deep tissues. Candida is a complex pathogen and the immune system uses various cells, cell surface receptors and signalling pathways to trigger an efficient host defence. Host- Candida interaction can result either in rapid elimination of the pathogen or the persistence of the pathogen in immunocompromised patients, leading to either chronic mucocutanous candidiasis or invasive candidiasis. Here, we discuss the molecular basis of receptor-mediated recognition and uptake of non-opsonized Candida and we describe the relative role of these receptors in initiating inflammation. In addition, the consequence of genetic defects in dectin-1 and dectin-1-mediated signalling and the role of Th17-dependent mechanisms for the mucosal antifungal defence are discussed. © 2010 Elsevier Ltd.

Somsak L.,Debrecen University
Comptes Rendus Chimie | Year: 2011

Design, synthesis, and structure-activity relationships of glucose analogue inhibitors of glycogen phosphorylase are surveyed. © 2010 Académie des sciences.

Barta Z.,Debrecen University
Philosophical Transactions of the Royal Society B: Biological Sciences | Year: 2016

Life on Earth has two remarkable properties. The first is variation: even apart from the vast number of extant species, there are considerable differences between individuals within a single species. The second property is cooperation. It is surprising that until recently the interactions between these two properties have rarely been addressed from an evolutionary point of view. Here, I concentrate on how inter-individual differences influence the evolution of cooperation. First, I deal with cases where individuality is maintained by random processes like mutation or phenotypic noise. Second, I examine when differences in state cause differences in behaviour. Finally, I investigate the effects of individual role specialization. Variation can be important in several ways. Increased random variation can change the expectation about cooperativeness of future partners, altering behaviour in a current relationship. Differences in state may serve as a book-keeping mechanism that is necessary for the evolution of reciprocity. If the cost of cooperation can depend on state then strategic regulation of state makes it possible to coerce partners to cooperate. If conditions force individuals to specialize, cooperation becomes more valuable. My review of theoretical models suggests that variation plays an important role in the evolution of cooperation. © 2016 The Author(s) Published by the Royal Society. All rights reserved.

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