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Horváth E, Szabó A, Erdős CS, Dobi-Ágoston G, Paulik E. Factors influencing obesity among Hungarian school-age children. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Childhood obesity has increased almost 80% worldwide in the last 30 years. According to WHO COSI data, Hungary is ranked 15th in the prevalence of overweight/obesity in 6-9 years children, with national values (27.4%) higher than the average of the participating countries. The aim of the study was to investigate the factors contributing to childhood obesity, along some components of the ecological model, and to identify factors promoting or inhibiting lifestyle changes.
Methods
The survey was conducted in three primary schools of Szeged, involving 9-12 years old children and their parents (N = 459). The questionnaire examined the child's physical activity, dietary habits, mood, postnatal medical history as well as parents' anthropometric, socio-demographic data, attitudes to their child's nutrition, health-related value system, lifestyle knowledge and relevant history of obesity.
Results
The prevalence of overweight/obesity was 22.7% in the sample, with higher proportion of boys than girls (59.6% vs. 40.4%). Overweight/obese children were significantly more dissatisfied with their shape than children with normal BMI (39.8% vs. 8.9%, p < 0.001) and fewer of them participated in out-of-school sports activities (69.1% vs. 79.1 %, p > 0.05;). Obese children were significantly more likely to eat even when they were not hungry (37.2% vs. 26.4%, p < 0.05). Frequency of meals with the family was also the lowest among overweight/obese (60.6%), and three times as many of them ate alone in their room than their nutritionally normal fellows. There was no significant difference in the diet preferences and quality of food of the two groups.
Conclusions
In our study, prevalence of childhood obesity was beyond than global prevalence. Parents' attitudes, and family conventions significantly influenced the success of a child's lifestyle change hence it is high priority to increase the knowledge of the parents.
Funding
The research is supported by the EFOP-3.6.1-16-2016-00008.
Key messages
Childhood obesity is a complex problem, simultaneous, positive modification of the family, community, and social environment is indispensable for effective intervention. Parents’ lifestyle influences the children’s dietary habits, therefore parent’s health education is important in the prevention of childhood obesity.
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Affiliation(s)
- E Horváth
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - A Szabó
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - C s Erdős
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - G Dobi-Ágoston
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - E Paulik
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary
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Pólos M, Benke K, Ágg B, Stengl R, Szabó A, Nagy Á, Ruskó B, Hedberg J, Radovits T, Susánszky É, Merkely B, Székely A, Szabolcs Z. Psychological factors affecting Marfan syndrome patients with or without cardiac surgery. Ann Palliat Med 2020; 9:3007-3017. [PMID: 32819130 DOI: 10.21037/apm-20-546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/01/2020] [Indexed: 11/06/2022]
Abstract
BACKGROUND Marfan syndrome (MFS) is a systemic connective tissue disorder belonging to a group of rare diseases. Several psychologically distressing factors can challenge life for MFS patients. The aim of the present study was, therefore, to assess the psychological and psychosocial aspects of MFS with the goal of identifying a means of improving disease management for patients. METHODS A total of 66 adult patients with MFS were enrolled into the study prospectively and were divided into operated (OP) and non-operated (NOP) subgroups. Multiple questionnaire tests were used to determine the mental and physical state of our patients. Demographic and surgical data were collected. The results of the tests were also compared to the Hungarostudy (HS) population (representing the average Hungarian population) by using a propensity-matched control. RESULTS OP group scores yielded more alcohol consumption (P<0.001), while NOP group showed more sleep disturbances. Scores on the MMSE, BECK, STAI and STAI-T tests showed no significant difference comparing the OP and NOP groups. MFS patients appear to have moderate pain-related disability and mild depressive symptoms and sleep disturbances (P<0.05) compared to the HS group. On 10-point scale, MFS patients were more satisfied with their lives (P<0.001) and considered themselves happier (P<0.001) than the HS population; however, they also spent more days on sick leave and in hospital over the past year. The HS group yielded a higher overall percentage of current smokers and pack-per-year consumption than the MFS patients overall (P=0.003 and P<0.001 respectively). CONCLUSIONS Marfan patients' psychosocial life differs in many ways (including sleep disturbances, healthier lifestyle, pain-related suffering) from the average Hungarian population. Therefore, as part of a multidisciplinary approach during treatment, modern management of MFS should include psychosocial exploration and psychological support in addition to traditional medical options.
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Affiliation(s)
- Miklós Pólos
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Hungarian Marfan Foundation, Budapest, Hungary.
| | - Kálmán Benke
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Hungarian Marfan Foundation, Budapest, Hungary
| | - Bence Ágg
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Hungarian Marfan Foundation, Budapest, Hungary; Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Roland Stengl
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - András Szabó
- Department of Anesthesiology and Intensive Therapy, Budapest, Hungary
| | - Ádám Nagy
- Department of Anesthesiology and Intensive Therapy, Budapest, Hungary
| | - Bernadett Ruskó
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Julianna Hedberg
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Éva Susánszky
- Institute of Behavioural Sciences, Semmelweis University, Budapest, Hungary
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Andrea Székely
- Department of Anesthesiology and Intensive Therapy, Budapest, Hungary
| | - Zoltán Szabolcs
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Hungarian Marfan Foundation, Budapest, Hungary
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53
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Rens EG, Zeegers MT, Rabbers I, Szabó A, Merks RMH. Autocrine inhibition of cell motility can drive epithelial branching morphogenesis in the absence of growth. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190386. [PMID: 32713299 DOI: 10.1098/rstb.2019.0386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Epithelial branching morphogenesis drives the development of organs such as the lung, salivary gland, kidney and the mammary gland. It involves cell proliferation, cell differentiation and cell migration. An elaborate network of chemical and mechanical signals between the epithelium and the surrounding mesenchymal tissues regulates the formation and growth of branching organs. Surprisingly, when cultured in isolation from mesenchymal tissues, many epithelial tissues retain the ability to exhibit branching morphogenesis even in the absence of proliferation. In this work, we propose a simple, experimentally plausible mechanism that can drive branching morphogenesis in the absence of proliferation and cross-talk with the surrounding mesenchymal tissue. The assumptions of our mathematical model derive from in vitro observations of the behaviour of mammary epithelial cells. These data show that autocrine secretion of the growth factor TGF[Formula: see text]1 inhibits the formation of cell protrusions, leading to curvature-dependent inhibition of sprouting. Our hybrid cellular Potts and partial-differential equation model correctly reproduces the experimentally observed tissue-geometry-dependent determination of the sites of branching, and it suffices for the formation of self-avoiding branching structures in the absence and also in the presence of cell proliferation. This article is part of the theme issue 'Multi-scale analysis and modelling of collective migration in biological systems'.
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Affiliation(s)
- Elisabeth G Rens
- Centrum Wiskunde and Informatica, Amsterdam, The Netherlands.,Mathematical Institute, Leiden University, Leiden, The Netherlands
| | - Mathé T Zeegers
- Centrum Wiskunde and Informatica, Amsterdam, The Netherlands
| | - Iraes Rabbers
- Centrum Wiskunde and Informatica, Amsterdam, The Netherlands
| | - András Szabó
- Centrum Wiskunde and Informatica, Amsterdam, The Netherlands
| | - Roeland M H Merks
- Centrum Wiskunde and Informatica, Amsterdam, The Netherlands.,Mathematical Institute, Leiden University, Leiden, The Netherlands
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54
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Szabó A, Nagy PT, Paál G. Numerical simulation of an acoustically excited plane jet in an incompressible framework and comparison with experimental data. J Acoust Soc Am 2020; 147:3429. [PMID: 32486771 DOI: 10.1121/10.0001256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
This paper is concerned with the interaction of a two-dimensional plane jet with transverse plane acoustic waves, which occur, for example, in flue instruments in the vicinity of the nozzle exit. The acoustic excitation is modeled with fluctuating boundary conditions within the framework of an incompressible simulation. This method can be easily implemented in commercial CFD software. The simulations are compared with well-documented measurement data from other authors. It is shown that the model can predict not only the growth rate but also the amplitude of the perturbation, thus it captures the key features of the jet behavior in the receptive and in the linear growth region.
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Affiliation(s)
- András Szabó
- Department of Hydrodynamic Systems, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary
| | - Péter Tamás Nagy
- Department of Hydrodynamic Systems, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary
| | - György Paál
- Department of Hydrodynamic Systems, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary
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55
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Nagy Á, Holndonner-Kirst E, Eke C, Szécsi B, Szabó A, Plamondon MJ, Fazekas L, Polos M, Benke K, Szabolcs Z, Hartyánszky I, Merkely B, Gál J, Székely A. Perioperative Low Tetraiodothyronine Levels and Adverse Outcomes After Heart Transplantation: A Retrospective, Observational Study. J Cardiothorac Vasc Anesth 2020; 34:2648-2654. [PMID: 32389455 DOI: 10.1053/j.jvca.2020.03.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/14/2020] [Accepted: 03/27/2020] [Indexed: 11/11/2022]
Abstract
OBJECTIVES Thyroid dysfunction has been shown to be associated with increased all-cause mortality and severity of chronic heart failure in critical illness and severe cardiac diseases. The present study was conducted to ascertain the relationship between perioperative free triiodothyronine and free tetraiodothyronine (fT4) levels and postoperative adverse outcomes after heart transplantation (HTX). DESIGN Retrospective, observational study. SETTING Single-center study in a quaternary care university clinical center. PARTICIPANTS The study comprised adult patients who underwent HTX between 2015 and 2019 and had at least 1 perioperative thyroid hormone laboratory test on the day of surgery or in the 24 hours before/after the procedure (free triiodothyronine, fT4, and thyroid-stimulating hormone). INTERVENTIONS No interventions were applied. MEASUREMENTS AND MAIN RESULTS The primary outcome was primary graft dysfunction (PGD), defined by the consensus conference of the International Society for Heart and Lung Transplantation. A total of 151 patients were included in the final analyses. Twenty-nine (19.2%) patients had PGD. Fourteen (9.3%) patients had low fT4 levels. An independent association was found between fT4 and PGD (odds ratio 6.49; 95% confidence interval 2.26-18.61; p = 0.001), with adjusted multivariate Cox regression models. CONCLUSION The perioperative fT4 level could be a prognostic marker of adverse outcomes in HTX. The authors suggest appropriate perioperative monitoring of fT4 levels. Additional research is warranted to examine the optimal timing, dosage, and method of replacement.
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Affiliation(s)
- Ádám Nagy
- Department of Anesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary; Semmelweis University, Budapest, Hungary
| | - Enikő Holndonner-Kirst
- Department of Anesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary
| | - Csaba Eke
- Semmelweis University, Budapest, Hungary
| | | | - András Szabó
- Department of Anesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary; Károly Rácz School of PhD Studies, Semmelweis University, Budapest, Hungary
| | - Marie-Jo Plamondon
- Department of Anesthesiology and Pain Medicine, University of Ottawa/Ottawa Hospital, Ottawa, ON, Canada
| | - Levente Fazekas
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Miklós Polos
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Kálmán Benke
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Zoltán Szabolcs
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | | | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - János Gál
- Department of Anesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary
| | - Andrea Székely
- Department of Anesthesiology and Intensive Therapy, Semmelweis University, Budapest, Hungary.
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Basal O, Szabó A. Physiomorphology of Soybean as Affected by Drought Stress and Nitrogen Application. Scientifica (Cairo) 2020; 2020:6093836. [PMID: 32351758 PMCID: PMC7171675 DOI: 10.1155/2020/6093836] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/14/2020] [Accepted: 03/19/2020] [Indexed: 05/23/2023]
Abstract
Drought periods are predicted to increase in the future, putting the production of sensitive crops under serious hazards. Soybean, as a legume, is capable of partly achieving its nitrogen demands through the N2-fixation process; however, this process is inhibited by drought stress conditions. Moreover, N2-fixation might not fulfill the total N demand for soybean plants, so supplemental N-fertilizer doses might be crucial. A 3-year experiment was carried out in Debrecen, Hungary, to investigate the effects of inoculation and N-fertilizer application on the physiomorphology of soybean (cv. Boglár) under both drought stress and irrigated conditions. Results showed that, regardless of inoculation, drought negatively affected plant height, LAI, SPAD, and, to a smaller extent, NDVI. On average, increasing N-fertilizer enhanced these traits accordingly. Inoculation, on the other hand, resulted in taller plants and higher LAI values, but lower SPAD values. It could be concluded that soybean's physiomorphology is negatively influenced by drought stress and that N-fertilizer application can enhance it whether soybean plants suffer from drought stress conditions or not.
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Affiliation(s)
- Oqba Basal
- Department of Crop Production and Applied Ecology, University of Debrecen, Debrecen, 4032/Böszörményi Road 138/A, Hungary
| | - András Szabó
- Department of Crop Production and Applied Ecology, University of Debrecen, Debrecen, 4032/Böszörményi Road 138/A, Hungary
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Pepó P, Szabó A, Dóka L, Szabó É, Babett Ábrahám É. Assimilation capacity by non-destructive in situ measurements in longterm experiment of maize (Zea mays L.) under different plant density and nitrigen supply in Chernozem. Acta fytotechn zootechn 2020. [DOI: 10.15414/afz.2020.23.01.7-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Toldi V, Szabó A, Sahin-Tóth M. Inactivation of mesotrypsin by chymotrypsin C prevents trypsin inhibitor degradation. J Biol Chem 2020; 295:3447-3455. [PMID: 32014997 DOI: 10.1074/jbc.ra120.012526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Indexed: 01/27/2023] Open
Abstract
Mesotrypsin is an unusual human trypsin isoform with inhibitor resistance and the ability to degrade trypsin inhibitors. Degradation of the protective serine protease inhibitor Kazal type 1 (SPINK1) by mesotrypsin in the pancreas may contribute to the pathogenesis of pancreatitis. Here we tested the hypothesis that the regulatory digestive protease chymotrypsin C (CTRC) mitigates the harmful effects of mesotrypsin by cleaving the autolysis loop. As human trypsins are post-translationally sulfated in the autolysis loop, we also assessed the effect of this modification. We found that mesotrypsin cleaved in the autolysis loop by CTRC exhibited catalytic impairment on short peptides due to a 10-fold increase in Km , it digested β-casein poorly and bound soybean trypsin inhibitor with 10-fold decreased affinity. Importantly, CTRC-cleaved mesotrypsin degraded SPINK1 with markedly reduced efficiency. Sulfation increased mesotrypsin activity but accelerated CTRC-mediated cleavage of the autolysis loop and did not protect against the detrimental effect of CTRC cleavage. The observations indicate that CTRC-mediated cleavage of the autolysis loop in mesotrypsin decreases protease activity and thereby protects the pancreas against unwanted SPINK1 degradation. The findings expand the role of CTRC as a key defense mechanism against pancreatitis through regulation of intrapancreatic trypsin activity.
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Affiliation(s)
- Vanda Toldi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - András Szabó
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; Department of Molecular and Cell Biology, Center for Exocrine Disorders, Boston University, Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02118.
| | - Miklós Sahin-Tóth
- Department of Molecular and Cell Biology, Center for Exocrine Disorders, Boston University, Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02118; Department of Surgery, University of California Los Angeles, Los Angeles, California 90095.
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Menyhárt O, Szabó A, Garami M, Gyõrffy B. [Subgroup-specific genomic alterations and potential prognostic biomarkers in childhood medulloblastomas]. Magy Onkol 2019; 63:331-345. [PMID: 31821388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Despite continuing advances in therapeutic strategies, survival of childhood medulloblastoma (MB) patients has reached a plateau in the past decade. Current clinical approaches divide patients into average- and high-risk treatment categories, although this categorization does not take patient heterogeneity into account. Advanced genomics has initiated an exciting transition that lead to a consensus of four distinct molecular entities within MBs (WNT-activated, SHH-activated, Group 3 MB, and Group 4 MB), each with distinct origins, demographics, molecular alterations and clinical outcomes. Within each of the four primary subgroups additional subtypes started to emerge with distinct biological backgrounds and clinical outcomes. Here we summarize subgroup-specific genomic alterations, affected signaling pathways and potential prognostic biomarkers. The poor prognosis associated with recurrent disease is responsible for the stagnant survival rates. Nevertheless, the mortality is unlikely to change without new biomarkers linked to different mechanisms of pathway activation.
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Affiliation(s)
- Otília Menyhárt
- Lendület Onkológiai Biomarker Kutatócsoport, Természettudományi Kutatóközpont, Budapest, Hungary
| | - András Szabó
- II. Sz. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Budapest, Hungary.
| | - Miklós Garami
- II. Sz. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Budapest, Hungary.
| | - Balázs Gyõrffy
- Lendület Onkológiai Biomarker Kutatócsoport, Természettudományi Kutatóközpont, Budapest, Hungary
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Zentai A, Szeitzné-Szabó M, Mihucz G, Szeli N, Szabó A, Kovács M. Occurrence and Risk Assessment of Fumonisin B 1 and B 2 Mycotoxins in Maize-Based Food Products in Hungary. Toxins (Basel) 2019; 11:E709. [PMID: 31817520 PMCID: PMC6950155 DOI: 10.3390/toxins11120709] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 01/13/2023] Open
Abstract
Fumonisins are toxic secondary metabolites produced mainly by Fusarium verticillioides and Fusarium proliferatum. Their toxicity was evaluated, and health-based guidance values established on the basis of both Joint FAO/WHO Expert Committee on Food Additives (JECFA) and European Food Safety Authority (EFSA) recommendations. This study presents the results of fumonisin analyses in different maize- and rice-based food products in Hungary and the potential health risk arising from their dietary intake. In total, 326 samples were measured in 2017 and 2018 to determine fumonisins B1 and B2 levels. Three-day dietary record data were collected from 4992 consumers, in 2009. For each food category, the average concentration values were multiplied by the relevant individual consumption data, and the results were compared to the reference values. With respect to the maximum limits, one maize flour, two maize grits, and two samples of other maize-based, snack-like products had total fumonisin content minimally exceeding the EU regulatory limit. The mean daily intake for all maize-product consumers was 0.045-0.120 µg/kg bw/day. The high intake (95 percentile) ranged between 0.182 and 0.396 µg/kg bw/day, well below the 1 µg/kg bw/day tolerable daily intake (TDI) established by EFSA. While the intake calculations resulted in comforting results, maize-based products may indeed be contaminated by fumonisins. Therefore, frequent monitoring of fumonisins' levels and evaluation of their intakes using the best available data are recommended.
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Affiliation(s)
- Andrea Zentai
- System Management and Supervision Directorate, National Food Chain Safety Office, 1024 Budapest, Hungary;
| | - Mária Szeitzné-Szabó
- Faculty of Agricultural and Environmental Sciences, University of Kaposvár, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.S.-S.); (G.M.); (N.S.); (M.K.)
| | - Gábor Mihucz
- Faculty of Agricultural and Environmental Sciences, University of Kaposvár, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.S.-S.); (G.M.); (N.S.); (M.K.)
| | - Nóra Szeli
- Faculty of Agricultural and Environmental Sciences, University of Kaposvár, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.S.-S.); (G.M.); (N.S.); (M.K.)
| | - András Szabó
- Faculty of Agricultural and Environmental Sciences, University of Kaposvár, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.S.-S.); (G.M.); (N.S.); (M.K.)
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary
| | - Melinda Kovács
- Faculty of Agricultural and Environmental Sciences, University of Kaposvár, Guba S. u. 40., 7400 Kaposvár, Hungary; (M.S.-S.); (G.M.); (N.S.); (M.K.)
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary
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61
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Ali O, Szabó-Fodor J, Fébel H, Mézes M, Balogh K, Glávits R, Kovács M, Zantomasi A, Szabó A. Porcine Hepatic Response to Fumonisin B 1 in a Short Exposure Period: Fatty Acid Profile and Clinical Investigations. Toxins (Basel) 2019; 11:E655. [PMID: 31717687 PMCID: PMC6891595 DOI: 10.3390/toxins11110655] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 12/13/2022] Open
Abstract
Scarce studies have investigated the impact of fumonisin B1 (FB1) on the hepatic tissue fatty acid (FA) profile, and no study is available on piglets. A 10-day in vivo experiment was performed on seven piglets/group: control and FB1-fed animals (diet was contaminated with fungal culture: 20 mg FB1/kg diet). Independent sample t-test was carried out at p < 0.05 as the significance level. Neither growth, nor feed efficiency, was affected. The hepatic phospholipid (PL) fatty acids (FAs) were more susceptible for FB1, while triglyceride (TG) was less responsive. The impact of FB1 on hepatic PL polyunsaturated fatty acids (PUFAs) was more pronounced than on saturated fatty acids. Among all PUFAs, predominant ones in response were docosapentaenoicacid (DPA) (↓), docosahexaenoic DHA (↓) and arachidonic acids (↑). This led to a higher omega-6:omega-3 ratio, whereas a similar finding was noted in TGs. Neither total saturation (SFA) nor total monousaturation (MUFA) were affected by the FB1 administration. The liver showed an increase in malondialdehyde, as well as antioxidant capacity (reduced glutathione and glutathione peroxidase). The plasma enzymatic assessment revealed an increase in alkaline phosphatase (ALP), while alanine transaminase (ALT), aspartate transaminase (AST), lactate dehydrogenase (LDH), and gamma-glutamyltransferase (GGT) were not influenced. The microscopic sections provided evidence of vacuolar degeneration of the hepatocytes' cytoplasm, but it was not severe. Furthermore, the lung edema was developed, while the kidney was not affected. In conclusion, regarding FB1-mediated hepatotoxicity in piglets, the potential effect of slight hepatotoxicity did not compromise growth performance, at least at the dose and exposure period applied.
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Affiliation(s)
- Omeralfaroug Ali
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, 7400 Kaposvár, Hungary; (M.K.); (A.S.)
| | - Judit Szabó-Fodor
- “MTA-KE Mycotoxins in the Food Chain” Research Group, Hungarian Academy of Sciences, Kaposvár University, 7400 Kaposvár, Hungary;
| | - Hedvig Fébel
- Research Institute for Animal Breeding, Nutrition and Meat Science, National Agricultural Research Center, 2053 Herceghalom, Hungary;
| | - Miklós Mézes
- Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, 2103 Gödöllő, Hungary; (M.M.); (K.B.)
| | - Krisztián Balogh
- Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, 2103 Gödöllő, Hungary; (M.M.); (K.B.)
| | | | - Melinda Kovács
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, 7400 Kaposvár, Hungary; (M.K.); (A.S.)
- “MTA-KE Mycotoxins in the Food Chain” Research Group, Hungarian Academy of Sciences, Kaposvár University, 7400 Kaposvár, Hungary;
| | - Arianna Zantomasi
- Department of Animal Science, University of Padova, Agripolis, Viale dell’Università 16, 35020 Legnaro, Padova, Italy;
| | - András Szabó
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, 7400 Kaposvár, Hungary; (M.K.); (A.S.)
- “MTA-KE Mycotoxins in the Food Chain” Research Group, Hungarian Academy of Sciences, Kaposvár University, 7400 Kaposvár, Hungary;
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Till Á, Zima J, Fekete A, Bene J, Czakó M, Szabó A, Melegh B, Hadzsiev K. Mutation spectrum of the SCN1A gene in a Hungarian population with epilepsy. Seizure 2019; 74:8-13. [PMID: 31765958 DOI: 10.1016/j.seizure.2019.10.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/30/2019] [Accepted: 10/29/2019] [Indexed: 01/05/2023] Open
Abstract
PURPOSE The vast majority of mutations responsible for epilepsy syndromes such as genetic epilepsy with febrile seizures plus (GEFS+) and Dravet syndrome (DS) occur in the gene encoding the type 1 alpha subunit of neuronal voltage-gated sodium channel (SCN1A). METHODS 63 individuals presenting with either DS or GEFS + syndrome phenotype were screened for SCN1A gene mutation using Sanger sequencing and multiplex ligation-dependent probe amplification (MLPA). RESULTS Our research study identified 15 novel pathogen mutations in the SCN1A gene of which 12 appeared to be missense mutations with addition of two frameshift-deletions and one in-frame deletion. The distribution of clinical phenotypes in patients carrying SCN1A mutations was as follows: twelve patients had classical DS, three patients had GEFS + syndrome and two relatives of DS patients were suffering from febrile seizures. CONCLUSIONS Our study highlights the phenotypic and genotypic heterogeneities of DS and GEFS + with the important aim of gaining a deeper understanding of SCN1A-related disorders. This study also represents the first genetic analysis of the SCN1A gene in a Hungarian cohort with the DS and GEFS + syndrome phenotype.
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Affiliation(s)
- Ágnes Till
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary
| | - Judith Zima
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary
| | - Anett Fekete
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary
| | - Judit Bene
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary; Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Márta Czakó
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary; Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - András Szabó
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary; Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Béla Melegh
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary; Szentágothai Research Center, University of Pécs, Pécs, Hungary.
| | - Kinga Hadzsiev
- Department of Medical Genetics, Medical School, Clinical Center, University of Pécs, Pécs, Hungary; Szentágothai Research Center, University of Pécs, Pécs, Hungary
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63
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Nagy A, Szécsi B, Lendvai M, Eke C, Holndonner-Kirst E, Szabó A, Czobor N, Gál J, Merkely B, Székely A. Perioperative thyroid dysfunction and outcome after heart transplantation. J Cardiothorac Vasc Anesth 2019. [DOI: 10.1053/j.jvca.2019.07.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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64
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Szabó A, Fébel H, Ali O, Kovács M. Fumonisin B 1 induced compositional modifications of the renal and hepatic membrane lipids in rats - Dose and exposure time dependence. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1722-1739. [PMID: 31437116 DOI: 10.1080/19440049.2019.1652772] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Male Wistar rats were intraperitoneally dosed with fumonisin B1 (FB1; 0, 20, 50 and 100 mg kg-1 dietary dose equivalent) for 5 & 10 days to assess dose- and time-dependent effects on renal and hepatic phosphatidylcholine (PC), phosphatidylinositol (PI) and phosphatidylethanolamine (PE) fatty acid (FA) profiles. Renal PC showed increasing FA saturation (SAT) after 5 days; after 10 days polyunsaturation (PUFA) decreased markedly (Σ n3 (total n3), Σ n6, PUFA, unsaturation index (UI) and average FA chain length (ACL)), mostly with linear dose response. In the PI FAs similar changes were observed, decreasing monounsaturated FA, PUFA, UI and ACL (5 & 10 days), while the PE fraction was responsive in Σ n6 (↓) and SAT (↑), but only after 5 days (without dose response for both PI & PE). Liver PC exhibited increasing saturation (C16:0), decreasing polyunsaturation (C20:3 n6 [dihomo-γ-linolenic acid, DGLA]; C20:3 n3); the PI FA profile showed similar alterations after 5 days. PC & PI FA failed to respond in a dose-dependent manner to FB1. In PE FA profile DGLA decreased, with a decrease of the total n6 FA proportion and dose-dependent increase of n3 FAs. Results revealed expressed renal sensitivity, supporting our earlier published results in terms of oxidative stress and histopathological modifications.
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Affiliation(s)
- András Szabó
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Kaposvár, Hungary.,Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Hedvig Fébel
- National Agricultural Research and Innovation Centre, Research Institute for Animal Breeding, Nutrition and Meat Science, Herceghalom, Hungary
| | - Omeralfaroug Ali
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Melinda Kovács
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Kaposvár, Hungary.,Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
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65
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66
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Hafner D, Tuboly T, Mézes M, Bloch-Bodnár Z, Balogh K, Vántus V, Bóta B, Szabó-Fodor J, Matics Z, Szabó A, Kovács M. Effect of feedingBacillus cereusvar.toyoiand/or mannan oligosaccharide (MOS) on blood clinical chemistry, oxidative stress, immune response and genotoxicity in T-2 toxin exposed rabbits. Italian Journal of Animal Science 2019. [DOI: 10.1080/1828051x.2019.1641165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Dóra Hafner
- Agrár- és Környezettudományi Kar, Kaposvár University, Kaposvár, Hungary
| | - Tamás Tuboly
- Járványtani és Mikrobiológiai Tanszék, University of Veterinary Medicine, Budapest, Hungary
| | - Miklós Mézes
- Mezőgazdaság- és Környezettudományi Kar, Szent István University, Gödöllő, Hungary
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
| | | | - Krisztián Balogh
- Mezőgazdaság- és Környezettudományi Kar, Szent István University, Gödöllő, Hungary
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
| | - Viola Vántus
- Agrár- és Környezettudományi Kar, Kaposvár University, Kaposvár, Hungary
| | - Brigitta Bóta
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
| | - Judit Szabó-Fodor
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
| | - Zsolt Matics
- Agrár- és Környezettudományi Kar, Kaposvár University, Kaposvár, Hungary
| | - András Szabó
- Agrár- és Környezettudományi Kar, Kaposvár University, Kaposvár, Hungary
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
| | - Melinda Kovács
- Agrár- és Környezettudományi Kar, Kaposvár University, Kaposvár, Hungary
- MTA-KE-SZIE Mikotoxinok az Élelmiszerláncban Kutatócsoport, Kaposvár, Hungary
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67
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Esteghamat F, Broughton JS, Smith E, Cardone R, Tyagi T, Guerra M, Szabó A, Ugwu N, Mani MV, Azari B, Kayingo G, Chung S, Fathzadeh M, Weiss E, Bender J, Mane S, Lifton RP, Adeniran A, Nathanson MH, Gorelick FS, Hwa J, Sahin-Tóth M, Belfort-DeAguiar R, Kibbey RG, Mani A. CELA2A mutations predispose to early-onset atherosclerosis and metabolic syndrome and affect plasma insulin and platelet activation. Nat Genet 2019; 51:1233-1243. [PMID: 31358993 PMCID: PMC6675645 DOI: 10.1038/s41588-019-0470-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 06/20/2019] [Indexed: 12/12/2022]
Abstract
Factors that underlie the clustering of metabolic syndrome traits are not fully known. We performed whole exome sequence analysis in kindreds with extreme phenotypes of early-onset atherosclerosis and metabolic syndrome and identified novel loss-of-function mutations in the gene encoding the pancreatic elastase CELA2A. We further show that CELA2A is a circulating enzyme that reduces platelet hyperactivation, triggers both insulin secretion and degradation, and increases insulin sensitivity. CELA2A plasma levels rise postprandially and parallel insulin levels in humans. Loss of these functions by the mutant proteins provides insight into disease mechanisms and suggests that CELA2A could be an attractive therapeutic target. Exome sequencing identifies loss-of-function CELA2A mutations in families with early-onset atherosclerosis and metabolic syndrome. Functional studies show that CELA2A is a circulating enzyme that reduces platelet activation, triggers insulin secretion and degradation, and increases insulin sensitivity.
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Affiliation(s)
| | - James S Broughton
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Emily Smith
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Rebecca Cardone
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Tarun Tyagi
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Mateus Guerra
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - András Szabó
- Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - Nelson Ugwu
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Mitra V Mani
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Bani Azari
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Gerald Kayingo
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Sunny Chung
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Mohsen Fathzadeh
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Ephraim Weiss
- Department of Medicine, NYU Medical Center, New York, NY, USA
| | - Jeffrey Bender
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Shrikant Mane
- Department of Genetics, Yale School of Medicine, New Haven, CT, USA
| | - Richard P Lifton
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | | | - Michael H Nathanson
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Fred S Gorelick
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - John Hwa
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Miklós Sahin-Tóth
- Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | | | - Richard G Kibbey
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Arya Mani
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA. .,Department of Genetics, Yale School of Medicine, New Haven, CT, USA.
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68
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Abstract
Neural crest cells are a transient embryonic cell population that migrate collectively to various locations throughout the embryo to contribute a number of cell types to several organs. After induction, the neural crest delaminates and undergoes an epithelial-to-mesenchymal transition before migrating through intricate yet characteristic paths. The neural crest exhibits a variety of migratory behaviors ranging from sheet-like mass migration in the cephalic regions to chain migration in the trunk. During their journey, neural crest cells rely on a range of signals both from their environment and within the migrating population for navigating through the embryo as a collective. Here we review these interactions and mechanisms, including chemotactic cues of neural crest cells' migration.
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Affiliation(s)
- András Szabó
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, United Kingdom;
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, United Kingdom;
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69
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Affiliation(s)
- Orsolya Juhász
- 2nd Department of Pediatrics, Semmelweis University, Hungary
| | - Zsuzsanna Jakab
- 2nd Department of Pediatrics; National Childhood Cancer Registry, Semmelweis University, Hungary
| | - András Szabó
- 2nd Department of Pediatrics, Semmelweis University, Hungary
| | - Miklós Garami
- 2nd Department of Pediatrics, Semmelweis University, Hungary
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70
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Szuróczki S, Khayer B, Spröer C, Toumi M, Szabó A, Felföldi T, Schumann P, Tóth E. Arundinibacter roseus gen. nov., sp. nov., a new member of the family Cytophagaceae. Int J Syst Evol Microbiol 2019; 69:2076-2081. [PMID: 31099731 DOI: 10.1099/ijsem.0.003436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three Gram-stain-negative, aerobic, non-motile, oxidase- and catalase positive, rod-shaped, pink-coloured bacterial strains, DMA-K-7aT, DMA-K-1 and DMG-N-1, were isolated from water sampled at Lake Fertő/Neusiedler See (Hungary). Phylogenetic analysis based on the 16S rRNA gene sequences revealed that the strains form a distinct linage within the family Cytophagaceae of the phylum Bacteroidetes, and their closest relatives are Rhabdobacter roseus R49T (95.66 %) and Dyadobacter sediminis Z12T (95.38 %). The assembled genome of strain DMA-K-7aT had a total length of 5.8 Mb and a DNA G+C content of 45.7 mol%. The major isoprenoid quinone was menaquinone-7 (MK-7). The major cellular fatty acids were C16 : 1 ω7c, iso-C15 : 0, C16 : 1 ω5c, C16 : 0 and iso-C17 : 0 3-OH. The polar lipid profile contained phosphatidylethanolamine, phosphatidylserine, an unknown aminolipid, an unknown glycolipid and five unknown lipids. Flexirubin-type pigments were absent. Strain DMA-K-7aT (=DSM 106737T=NCAIM B.02641T) is proposed as the type strain of a new genus and species in the family Cytophagaceae, for which the name Arundinibacter roseus gen. nov., sp. nov. is proposed.
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Affiliation(s)
- S Szuróczki
- 1Department of Microbiology, Faculty of Science, Eötvös Loránd University, Pázmány Péter stny., 1/C, H-1117 Budapest, Hungary
| | - B Khayer
- 2Department of Water Hygiene, National Public Health Center, Albert Flórián út 2-6. H-1097 Budapest, Hungary
| | - C Spröer
- 3Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, D-38124, Braunschweig, Germany
| | - M Toumi
- 1Department of Microbiology, Faculty of Science, Eötvös Loránd University, Pázmány Péter stny., 1/C, H-1117 Budapest, Hungary
| | - A Szabó
- 1Department of Microbiology, Faculty of Science, Eötvös Loránd University, Pázmány Péter stny., 1/C, H-1117 Budapest, Hungary
| | - T Felföldi
- 1Department of Microbiology, Faculty of Science, Eötvös Loránd University, Pázmány Péter stny., 1/C, H-1117 Budapest, Hungary
| | - P Schumann
- 3Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, D-38124, Braunschweig, Germany
| | - E Tóth
- 1Department of Microbiology, Faculty of Science, Eötvös Loránd University, Pázmány Péter stny., 1/C, H-1117 Budapest, Hungary
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71
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Nagy J, Szabó A, Donkó T, Bokor J, Romvári R, Repa I, Horn P, Fébel H. Body composition and venison quality of farmed red deer ( Cervus elaphus) hinds reared on grass, papilionaceous or mixed pasture paddocks. Arch Anim Breed 2019; 62:227-239. [PMID: 31807633 PMCID: PMC6852854 DOI: 10.5194/aab-62-227-2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 04/05/2019] [Indexed: 12/03/2022] Open
Abstract
Red deer (Cervus elaphus) hinds (n=3×10) of identical initial body
weight (BW, ca. 68 kg) were reared on a monocotyledonous grass (G group), on a
grass–papilionaceous (GP group) or on pure papilionaceous pasture each of 2 ha (P group) for
219 d. At the end of the experiment carcass tissue composition
was assessed by means of computer tomography, slaughter value and meat
quality were characterized and tissue – longissimus thoracis et lumborum (LTL), thigh and liver – samples were
taken for fatty acid composition analysis. The primary aim was to assess
nutrition-driven differences. Hinds of group P provided higher final BW (101 kg vs. 90 and 91.9 kg in groups G
and GP, respectively) and higher BW gain (32.6 kg during the total period vs. 22.4 and
22.1 kg). The carcass weight exceeded those of the other groups
significantly (68.8 kg vs. 59.3 and 63.2 kg), while there was no difference
among groups in the perirenal fat weight and red color tone (a*) of the LTL.
Groups G and P differed significantly in the LTL weight (highest in P), its
dripping loss (lowest in G), lightness (L; highest in P) and yellow color
tone (b*). In the thigh muscle, LTL and liver the highest proportion of fatty acid CLA9c11t was
reached on the G pasture, and the same trend was true for docosahexaenoic
acid (DHA , C22:6 n3) in the muscles. The n6 / n3 fatty acid ratio was the
highest on the P pasture in the liver and both muscles. The liver
incorporated the highest proportion of linoleic acid (C18:2 n6) and
converted it rather effectively to arachidonic acid (C20:4 n6), coupled with
the lowest α-linolenic acid presence. In conclusion, concerning muscle mass production, group P proved to be the most
advantageous pasture; meanwhile LTL meat quality factors (dripping loss,
DHA proportion, pH, color) were more favorable on the G pasture.
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Affiliation(s)
- János Nagy
- Kaposvár University, Faculty of Agricultural and Environmental Sciences, Bőszénfa Game Management Landscape Center, 3. Malom str., Bőszénfa, 7475, Hungary
| | - András Szabó
- Kaposvár University, of Agricultural and Environmental Sciences, "Mycotoxins in the Food Chain" Research Group, Guba S. u. 40, 7400, Kaposvár, Hungary.,Somogy County Moritz Kaposi Teaching Hospital, Dr. József Baka Diagnostical, Oncoradiological, Research and Educational Center, Guba S. u. 40, 7400, Kaposvár, Hungary
| | - Tamás Donkó
- Somogy County Moritz Kaposi Teaching Hospital, Dr. József Baka Diagnostical, Oncoradiological, Research and Educational Center, Guba S. u. 40, 7400, Kaposvár, Hungary.,Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. u. 40, Kaposvár, Hungary
| | - Julianna Bokor
- Kaposvár University, Faculty of Agricultural and Environmental Sciences, Bőszénfa Game Management Landscape Center, 3. Malom str., Bőszénfa, 7475, Hungary
| | - Róbert Romvári
- Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. u. 40, Kaposvár, Hungary
| | - Imre Repa
- Somogy County Moritz Kaposi Teaching Hospital, Dr. József Baka Diagnostical, Oncoradiological, Research and Educational Center, Guba S. u. 40, 7400, Kaposvár, Hungary
| | - Péter Horn
- Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. u. 40, Kaposvár, Hungary
| | - Hedvig Fébel
- National Agricultural Research and Innovation Centre, Research Institute for Animal Breeding, Nutrition and Meat Science, Gesztenyés str. 1, 2053, Herceghalom, Hungary
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72
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Szabó A, Theveneau E, Turan M, Mayor R. Neural crest streaming as an emergent property of tissue interactions during morphogenesis. PLoS Comput Biol 2019; 15:e1007002. [PMID: 31009457 PMCID: PMC6497294 DOI: 10.1371/journal.pcbi.1007002] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/02/2019] [Accepted: 04/03/2019] [Indexed: 12/05/2022] Open
Abstract
A fundamental question in embryo morphogenesis is how a complex pattern is established in seemingly uniform tissues. During vertebrate development, neural crest cells differentiate as a continuous mass of tissue along the neural tube and subsequently split into spatially distinct migratory streams to invade the rest of the embryo. How these streams are established is not well understood. Inhibitory signals surrounding the migratory streams led to the idea that position and size of streams are determined by a pre-pattern of such signals. While clear evidence for a pre-pattern in the cranial region is still lacking, all computational models of neural crest migration published so far have assumed a pre-pattern of negative signals that channel the neural crest into streams. Here we test the hypothesis that instead of following a pre-existing pattern, the cranial neural crest creates their own migratory pathway by interacting with the surrounding tissue. By combining theoretical modeling with experimentation, we show that streams emerge from the interaction of the hindbrain neural crest and the neighboring epibranchial placodal tissues, without the need for a pre-existing guidance cue. Our model suggests that the initial collective neural crest invasion is based on short-range repulsion and asymmetric attraction between neighboring tissues. The model provides a coherent explanation for the formation of cranial neural crest streams in concert with previously reported findings and our new in vivo observations. Our results point to a general mechanism of inducing collective invasion patterns.
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Affiliation(s)
- András Szabó
- Research Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Eric Theveneau
- Research Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Melissa Turan
- Research Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Roberto Mayor
- Research Department of Cell and Developmental Biology, University College London, London, United Kingdom
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73
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Szabó A. [Visitation to the royal labour room. Labour and doctors of Geraldine, Queen of Albania]. Orv Hetil 2019; 160:396-398. [PMID: 30829062 DOI: 10.1556/650.2019.ho2620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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74
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Pápa Z, Kecsenovity E, Csontos J, Szabó A, Toth Z, Budai J. Ellipsometric Analysis of Aligned Carbon Nanotubes for Designing Catalytic Support Systems. J Nanosci Nanotechnol 2019; 19:395-399. [PMID: 30327047 DOI: 10.1166/jnn.2019.15788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vertically aligned CNT carpets combined with inorganic semiconductors are expected good prospect in practical applications, especially in photocatalysis. If these devices are in production, a fast and non-invasive characterization method will be required. Ellipsometry is widely used in industry as an in-line monitoring tool, so in this study the applicability of ellipsometry for characterizing CNT carpets is investigated. It is shown that ellipsometric evaluation can provide information about the density and the optical properties of the nanotubes; however, the properties of the individual nanotubes (diameter, wall number) can not be taken into account during ellipsometric modeling. To overcome these limitations, numerical simulations are also presented.
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Affiliation(s)
- Z Pápa
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, 6720, Hungary
| | - E Kecsenovity
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, 6720, Hungary
| | - J Csontos
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, 6720, Hungary
| | - A Szabó
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, 6720, Hungary
| | - Z Toth
- Department of Oral Biology and Experimental Dental Research, University of Szeged, Szeged, 6720, Hungary
| | - J Budai
- Department of Optics and Quantum Electronics, University of Szeged, Szeged, 6720, Hungary
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75
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Shellard A, Szabó A, Trepat X, Mayor R. Supracellular contraction at the rear of neural crest cell groups drives collective chemotaxis. Science 2018; 362:339-343. [PMID: 30337409 DOI: 10.1126/science.aau3301] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 09/10/2018] [Indexed: 12/13/2022]
Abstract
Collective cell chemotaxis, the directed migration of cell groups along gradients of soluble chemical cues, underlies various developmental and pathological processes. We use neural crest cells, a migratory embryonic stem cell population whose behavior has been likened to malignant invasion, to study collective chemotaxis in vivo. Studying Xenopus and zebrafish, we have shown that the neural crest exhibits a tensile actomyosin ring at the edge of the migratory cell group that contracts in a supracellular fashion. This contractility is polarized during collective cell chemotaxis: It is inhibited at the front but persists at the rear of the cell cluster. The differential contractility drives directed collective cell migration ex vivo and in vivo through the intercalation of rear cells. Thus, in neural crest cells, collective chemotaxis works by rear-wheel drive.
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Affiliation(s)
- Adam Shellard
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - András Szabó
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - Xavier Trepat
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina, Barcelona 08028, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK.
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Szabó A, Szabó-Fodor J, Kachlek M, Mézes M, Balogh K, Glávits R, Ali O, Zeebone YY, Kovács M. Dose and Exposure Time-Dependent Renal and Hepatic Effects of Intraperitoneally Administered Fumonisin B₁ in Rats. Toxins (Basel) 2018; 10:E465. [PMID: 30424021 PMCID: PMC6265755 DOI: 10.3390/toxins10110465] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/02/2018] [Accepted: 11/07/2018] [Indexed: 01/09/2023] Open
Abstract
Male Wistar rats were treated intraperitoneally (i.p.) with fumonisin B₁ (FB₁; 0, 20, 50 and 100 mg/kg dietary dose equivalent) for 5 and 10 days (n = 24⁻24 in each setting) to gain dose- and time-dependent effects on antioxidant status and oxidative stress response, clinical chemical endpoints and liver, kidney and lung histopathology and lymphocyte damage (genotoxicity). FB₁ decreased feed intake, body weight gain and absolute liver weight, irrespective of the toxin dose. Relative kidney weight increased in the 10-day setting. Linear dose response was found for plasma aspartate aminotransferase, alanine aminotransferase, total cholesterol, urea and creatinine, and exposure time-dependence for plasma creatinine level. The latter was coupled with renal histopathological findings, tubular degeneration and necrosis and the detachment of tubular epithelial cells. The pronounced antioxidant response (reduced glutathione accretion, increasing glutathione peroxidase activity) referred to renal cortical response (5⁻10 days exposure at 50⁻100 ppm FB₁). Hepatic alterations were moderate, referring to initial phase lipid peroxidation (exposure time dependent difference of conjugated diene and triene concentrations), and slight functional disturbance (↑ total cholesterol). Lymphocyte DNA damage was moderate, supporting a mild genotoxic effect of FB₁.
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Affiliation(s)
- András Szabó
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary.
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., 7400 Kaposvár, Hungary.
- Somogy County Kaposi Mór Teaching Hospital, Dr. József Baka Diagnostical, Oncoradiological, Research and Educational Center, Guba S. u. 40., 7400 Kaposvár, Hungary.
| | - Judit Szabó-Fodor
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary.
| | - Mariam Kachlek
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., 7400 Kaposvár, Hungary.
| | - Miklós Mézes
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary.
- Faculty of Agricultural and Environmental Sciences, Department of Nutrition, Szent István University, Páter K. u. 1., 2013 Gödöllő, Hungary.
| | - Krisztián Balogh
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary.
- Faculty of Agricultural and Environmental Sciences, Department of Nutrition, Szent István University, Páter K. u. 1., 2013 Gödöllő, Hungary.
| | | | - Omeralfaroug Ali
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., 7400 Kaposvár, Hungary.
| | - Yarsmin Yunus Zeebone
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., 7400 Kaposvár, Hungary.
| | - Melinda Kovács
- MTA-KE-SZIE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40., 7400 Kaposvár, Hungary.
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., 7400 Kaposvár, Hungary.
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77
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Horváth E, Hernádi HJ, Szabó A, Lukács A, Molnár R, Paulik E. Willingness towards health behavior change and wellbeing among high school students in Hungary. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky214.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E Horváth
- Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - HJ Hernádi
- Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - A Szabó
- Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - A Lukács
- Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - R Molnár
- Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - E Paulik
- Faculty of Medicine, University of Szeged, Szeged, Hungary
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78
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Szabó-Fodor J, Szabó A, Kócsó D, Marosi K, Bóta B, Kachlek M, Mézes M, Balogh K, Kövér G, Nagy I, Glávits R, Kovács M. Interaction between the three frequently co-occurring Fusarium mycotoxins in rats. J Anim Physiol Anim Nutr (Berl) 2018; 103:370-382. [PMID: 30362174 DOI: 10.1111/jpn.13013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/13/2018] [Accepted: 09/26/2018] [Indexed: 12/19/2022]
Abstract
To test the complex, acute biochemical effects of combined, naturally co-occurring fusariotoxins, a 5-day rat study was performed. Mycotoxin treatment was invented by intraperitoneal injection: FB1 (F): 9 µg/animal/day (approx. 30 µg/kg bw/day), DON (D): 16.5 µg/animal/day (approx. 55 µg/kg bw/day) and ZEN (Z): 12.75 µg/animal/day (approx. 42.5 µg/kg bw/day). The binary groups (FB1 and DON [FD], FB1 and ZEN [FZ] and DON and ZEN [DZ]) as well as the ternary (FB1 , DON and ZEN [FDZ]) group were dosed at the same combined level as the individual mycotoxins. Body weight, feed intake and mortality were not affected by any of the treatments. FB1 and DON in combination (FD) increased the plasma aspartate aminotransferase activity synergistically (compared to the individual FB1 and DON). In the liver, both the total glutathione (GSH) and the glutathione peroxidase (GPx) activity were increased (p < 0.05) by the binary FB1 and ZEN (FZ) and the DON and ZEN (DZ) groups as well as the ternary FB1 , DON and ZEA group (FDZ) compared to the control. The GSH level of the ternary group was significantly increased compared to the FB1 group, whereas the GPx activity of the ternary group was significantly increased compared to all three the individual mycotoxin groups. The Bliss independence method revealed synergism between DON and ZEN (DZ), as well as FB1 and DON (FD) on liver GPx activity. None of the toxins alone or in combination exerted strong genotoxicity on lymphocytes, neither on the gross histopathological characteristics. However, even at these low levels acute exposure of more than one of these mycotoxins (FB1 , DON and ZEN) affected metabolic and detoxification changes.
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Affiliation(s)
- Judit Szabó-Fodor
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - András Szabó
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary.,Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Dániel Kócsó
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Kinga Marosi
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Brigitta Bóta
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Mariam Kachlek
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Miklós Mézes
- Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - Krisztián Balogh
- Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - György Kövér
- Faculty of Economic Sciences, Kaposvár University, Kaposvár, Hungary
| | - István Nagy
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | | | - Melinda Kovács
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary.,Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
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79
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Kócsó DJ, Szabó-Fodor J, Mézes M, Balogh K, Ferenczi S, Szabó A, Bóta B, Kovács M. Fumonisin B 1 exposure increases Hsp70 expression in the lung and kidney of rats without inducing significant oxidative stress. Acta Vet Hung 2018; 66:394-407. [PMID: 30264617 DOI: 10.1556/004.2018.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The objective of this experiment was to determine whether fumonisin B1 (FB1) added to the diet of rats in a dose of 50 mg/kg changes the production of heat shock protein 70 (Hsp70) in the lungs and kidney of rats. We also studied the effect of this mycotoxin on the antioxidant system of the body. Mature (8 weeks old) male Wistar Crl:WI BR rats (n = 6/group) were fed the toxin-containing diet for 5 days. FB1 resulted in a 7% body weight reduction without significantly changing the feed intake. Western blot analysis of the lungs and kidney demonstrated a substantial (1.4-fold and 1.8-fold, respectively) increase in Hsp70 expression. Alterations could not be detected in the clinical chemical parameters (total protein, albumin, total cholesterol, glucose, creatinine and urea concentrations, and aspartate aminotransferase activity). There was no statistically significant change in malondialdehyde concentrations and the measured antioxidant parameters (the amount of reduced glutathione, GSH and glutathione peroxidase activity, GPx) in the blood plasma, lung and kidney tissue. Thus, it can be concluded that FB1 did not induce oxidative stress in the lungs and kidney, but increased Hsp70 production.
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Affiliation(s)
- Dániel J. Kócsó
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
| | - Judit Szabó-Fodor
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
| | - Miklós Mézes
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
- 2 Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - Krisztián Balogh
- 2 Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - Szilamér Ferenczi
- 3 Institute of Experimental Medicine of the Hungarian Academy of Sciences, Budapest, Hungary
| | - András Szabó
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
- 2 Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - Brigitta Bóta
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
| | - Melinda Kovács
- 1 MTA-KE Mycotoxins in the Food Chain Research Group, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
- 4 Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
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80
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Donkó T, Tischler A, Csóka Á, Kovács G, Emri M, Petneházy Ö, Szabó A, Halas V, Tossenberger J, Garamvölgyi R, Bajzik G. Estimation of bone mineral density and breaking strength of laying hens based on scans of computed tomography for body composition analysis. Br Poult Sci 2018; 59:365-370. [DOI: 10.1080/00071668.2018.1471662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- T. Donkó
- Institute of Diagnostic Imaging and Radiation Oncology, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - A. Tischler
- Institute of Nutrition and Product Development Sciences, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - Á. Csóka
- Health Center, Kaposvár University, Kaposvár, Hungary
| | - G. Kovács
- Analytical Minds Ltd., Debrecen, Hungary
| | - M. Emri
- Research Department, Medicopus Nonprofit Ltd, Kaposvár, Hungary
- Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ö. Petneházy
- Institute of Diagnostic Imaging and Radiation Oncology, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - A. Szabó
- Institute of Diagnostic Imaging and Radiation Oncology, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
- “MTA-KE Mycotoxins in the Food Chain” Research Group, Hungarian Academy of Sciences – Kaposvár University, Kaposvár, Hungary
| | - V. Halas
- Institute of Nutrition and Product Development Sciences, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - J. Tossenberger
- Institute of Nutrition and Product Development Sciences, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - R. Garamvölgyi
- Institute of Diagnostic Imaging and Radiation Oncology, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - G. Bajzik
- Institute of Diagnostic Imaging and Radiation Oncology, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
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81
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Roycroft A, Szabó A, Bahm I, Daly L, Charras G, Parsons M, Mayor R. Redistribution of Adhesive Forces through Src/FAK Drives Contact Inhibition of Locomotion in Neural Crest. Dev Cell 2018; 45:565-579.e3. [PMID: 29870718 PMCID: PMC5988567 DOI: 10.1016/j.devcel.2018.05.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 03/19/2018] [Accepted: 05/02/2018] [Indexed: 01/01/2023]
Abstract
Contact inhibition of locomotion is defined as the behavior of cells to cease migrating in their former direction after colliding with another cell. It has been implicated in multiple developmental processes and its absence has been linked to cancer invasion. Cellular forces are thought to govern this process; however, the exact role of traction through cell-matrix adhesions and tension through cell-cell adhesions during contact inhibition of locomotion remains unknown. Here we use neural crest cells to address this and show that cell-matrix adhesions are rapidly disassembled at the contact between two cells upon collision. This disassembly is dependent upon the formation of N-cadherin-based cell-cell adhesions and driven by Src and FAK activity. We demonstrate that the loss of cell-matrix adhesions near the contact leads to a buildup of tension across the cell-cell contact, a step that is essential to drive cell-cell separation after collision. Focal adhesions disassemble at cell-cell contacts in contact inhibition of locomotion FA disassembly at the cell contact during CIL requires N-cadherin/Src/FAK signaling Cell separation during CIL involves a buildup of tension across the cell contact
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Affiliation(s)
- Alice Roycroft
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - András Szabó
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Isabel Bahm
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Liam Daly
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Guillaume Charras
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK; London Centre for Nanotechnology, UCL, London WC1H 0AH, UK; Institute for the Physics of Living Systems, UCL, London WC1E 6BT, UK
| | - Maddy Parsons
- Randall Division of Cell and Molecular Biophysics, Kings College London, London SE11UL, UK
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.
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82
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Harami-Papp H, Pongor LS, Munkácsy G, Horváth G, Nagy ÁM, Ambrus A, Hauser P, Szabó A, Tretter L, Győrffy B. TP53 mutation hits energy metabolism and increases glycolysis in breast cancer. Oncotarget 2018; 7:67183-67195. [PMID: 27582538 PMCID: PMC5341867 DOI: 10.18632/oncotarget.11594] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/13/2016] [Indexed: 12/22/2022] Open
Abstract
Promising new hallmarks of cancer is alteration of energy metabolism that involves molecular mechanisms shifting cancer cells to aerobe glycolysis. Our goal was to evaluate the correlation between mutation in the commonly mutated tumor suppressor gene TP53 and metabolism. We established a database comprising mutation and RNA-seq expression data of the TCGA repository and performed receiver operating characteristics (ROC) analysis to compare expression of each gene between TP53 mutated and wild type samples. All together 762 breast cancer samples were evaluated of which 215 had TP53 mutation. Top up-regulated metabolic genes include glycolytic enzymes (e.g. HK3, GPI, GAPDH, PGK1, ENO1), glycolysis regulator (PDK1) and pentose phosphate pathway enzymes (PGD, TKT, RPIA). Gluconeogenesis enzymes (G6PC3, FBP1) were down-regulated. Oxygen consumption and extracellular acidification rates were measured in TP53 wild type and mutant breast cell lines with a microfluorimetric analyzer. Applying metabolic inhibitors in the presence and absence of D-glucose and L-glutamine in cell culture experiments resulted in higher glycolytic and mitochondrial activity in TP53 mutant breast cancer cell lines. In summary, TP53 mutation influences energy metabolism at multiple levels. Our results provide evidence for the synergistic activation of multiple hallmarks linking to these the mutation status of a key driver gene.
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Affiliation(s)
| | - Lőrinc S Pongor
- MTA TTK Lendület Cancer Biomarker Research Group, H-1117, Budapest, Hungary.,Semmelweis University, 2nd Department of Pediatrics, H-1094, Budapest, Hungary
| | - Gyöngyi Munkácsy
- MTA TTK Lendület Cancer Biomarker Research Group, H-1117, Budapest, Hungary
| | - Gergő Horváth
- Semmelweis University, Department of Medical Biochemistry, H-1094, Budapest, Hungary
| | - Ádám M Nagy
- Semmelweis University, Department of Medical Biochemistry, H-1094, Budapest, Hungary
| | - Attila Ambrus
- Semmelweis University, Department of Medical Biochemistry, H-1094, Budapest, Hungary
| | - Péter Hauser
- Semmelweis University, 2nd Department of Pediatrics, H-1094, Budapest, Hungary
| | - András Szabó
- Semmelweis University, 2nd Department of Pediatrics, H-1094, Budapest, Hungary
| | - László Tretter
- Semmelweis University, Department of Medical Biochemistry, H-1094, Budapest, Hungary
| | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, H-1117, Budapest, Hungary
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83
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Szász AM, Lánczky A, Nagy Á, Förster S, Hark K, Green JE, Boussioutas A, Busuttil R, Szabó A, Győrffy B. Cross-validation of survival associated biomarkers in gastric cancer using transcriptomic data of 1,065 patients. Oncotarget 2018; 7:49322-49333. [PMID: 27384994 PMCID: PMC5226511 DOI: 10.18632/oncotarget.10337] [Citation(s) in RCA: 725] [Impact Index Per Article: 120.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 06/13/2016] [Indexed: 02/07/2023] Open
Abstract
Introduction Multiple gene expression based prognostic biomarkers have been repeatedly identified in gastric carcinoma. However, without confirmation in an independent validation study, their clinical utility is limited. Our goal was to establish a robust database enabling the swift validation of previous and future gastric cancer survival biomarker candidates. Results The entire database incorporates 1,065 gastric carcinoma samples, gene expression data. Out of 29 established markers, higher expression of BECN1 (HR = 0.68, p = 1.5E-05), CASP3 (HR = 0.5, p = 6E-14), COX2 (HR = 0.72, p = 0.0013), CTGF (HR = 0.72, p = 0.00051), CTNNB1 (HR = 0.47, p = 4.3E-15), MET (HR = 0.63, p = 1.3E-05), and SIRT1 (HR = 0.64, p = 2.2E-07) correlated to longer OS. Higher expression of BIRC5 (HR = 1.45, p = 1E-04), CNTN1 (HR = 1.44, p = 3.5E- 05), EGFR (HR = 1.86, p = 8.5E-11), ERCC1 (HR = 1.36, p = 0.0012), HER2 (HR = 1.41, p = 0.00011), MMP2 (HR = 1.78, p = 2.6E-09), PFKB4 (HR = 1.56, p = 3.2E-07), SPHK1 (HR = 1.61, p = 3.1E-06), SP1 (HR = 1.45, p = 1.6E-05), TIMP1 (HR = 1.92, p = 2.2E- 10) and VEGF (HR = 1.53, p = 5.7E-06) were predictive for poor OS. MATERIALS AND METHODS We integrated samples of three major cancer research centers (Berlin, Bethesda and Melbourne datasets) and publicly available datasets with available follow-up data to form a single integrated database. Subsequently, we performed a literature search for prognostic markers in gastric carcinomas (PubMed, 2012–2015) and re-validated their findings predicting first progression (FP) and overall survival (OS) using uni- and multivariate Cox proportional hazards regression analysis. Conclusions The major advantage of our analysis is that we evaluated all genes in the same set of patients thereby making direct comparison of the markers feasible. The best performing genes include BIRC5, CASP3, CTNNB1, TIMP-1, MMP-2, SIRT, and VEGF.
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Affiliation(s)
- A Marcell Szász
- MTA-TTK Lendület Cancer Biomarker Research Group, Budapest, Hungary.,2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - András Lánczky
- MTA-TTK Lendület Cancer Biomarker Research Group, Budapest, Hungary
| | - Ádám Nagy
- MTA-TTK Lendület Cancer Biomarker Research Group, Budapest, Hungary
| | - Susann Förster
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Kim Hark
- Transgenic Oncogenesis and Genomics Section, Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, Maryland, USA
| | - Jeffrey E Green
- Transgenic Oncogenesis and Genomics Section, Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, Maryland, USA
| | - Alex Boussioutas
- Cancer Genetics and Genomics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia.,Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia
| | - Rita Busuttil
- Cancer Genetics and Genomics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia.,Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia
| | - András Szabó
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Balázs Győrffy
- MTA-TTK Lendület Cancer Biomarker Research Group, Budapest, Hungary.,2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
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84
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Ács OD, Péterfia B, Hollósi P, Haltrich I, Sallai Á, Luczay A, Buiting K, Horsthemke B, Török D, Szabó A, Fekete G. [Rapid first-tier genetic diagnosis in patients with Prader-Willi syndrome]. Orv Hetil 2018; 159:64-69. [PMID: 29307221 DOI: 10.1556/650.2018.30918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION According to the international literature, DNA methylation analysis of the promoter region of SNRPN locus is the most efficient way to start genetic investigation in patients with suspected Prader-Willi syndrome. AIM Our aim was to develop a simple, reliable first-tier diagnosis to confirm Prader-Willi syndrome, therefore to compare our self-designed simple, cost-efficient high-resolution melting analysis and the most commonly used methylation-specific multiplex ligation-dependent probe amplification to confirm Prader-Willi syndrome. METHOD We studied 17 clinically suspected Prader-Willi syndrome children and their DNA samples. With self-designed primers, bisulfite-sensitive polymerase chain reaction, high-resolution melting analysis and, as a control, methylation-specific multiplex ligation-dependent probe amplification were performed. RESULTS Prader-Willi syndrome was genetically confirmed in 6 out of 17 clinically suspected Prader-Willi syndrome patients. The results of high-resolution melting analysis and methylation-specific multiplex ligation-dependent probe amplification were equivalent in each case. CONCLUSION Using our self-designed primers and altered bisulfite-specific PCR conditions, high-resolution melting analysis appears to be a simple, fast, reliable and effective method for primarily proving or excluding clinically suspected Prade-Willi syndrome cases. Orv Hetil. 2018; 159(2): 64-69.
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Affiliation(s)
- Orsolya Dóra Ács
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - Bálint Péterfia
- I. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest
| | - Péter Hollósi
- I. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest.,Daganatprogresszió Kutatócsoport, Magyar Tudományos Akadémia Budapest
| | - Irén Haltrich
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - Ágnes Sallai
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - Andrea Luczay
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - Karin Buiting
- Institut für Humangenetik, Universität Duisburg-Essen Essen, Germany
| | | | - Dóra Török
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - András Szabó
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
| | - György Fekete
- II. Gyermekgyógyászati Klinika, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 7-9., 1094
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85
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Szabó A, Czakó M, Hadzsiev K, Duga B, Bánfai Z, Komlósi K, Melegh B. Small supernumerary marker chromosome 15 and a ring chromosome 15 associated with a 15q26.3 deletion excluding the
IGF1R
gene. Am J Med Genet A 2017; 176:443-449. [DOI: 10.1002/ajmg.a.38566] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 10/04/2017] [Accepted: 11/13/2017] [Indexed: 11/06/2022]
Affiliation(s)
- András Szabó
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Márta Czakó
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Kinga Hadzsiev
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Balázs Duga
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Zsolt Bánfai
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Katalin Komlósi
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
| | - Béla Melegh
- Department of Medical Genetics University of PécsPécsHungary
- Szentágothai Research CentrePécsHungary
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86
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Csupor D, Kiss T, Oszlánczi G, Lukács A, Tímár Z, Tiszlavicz L, Szabó A. Safety issues concerning common ragweed. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- D Csupor
- University of Szeged, Faculty of Pharmacy, Department of Pharmacognosy, Szeged, Hungary
- University of Szeged, Interdisciplinary Centre for Natural Products, Szeged, Hungary
| | - T Kiss
- University of Szeged, Faculty of Pharmacy, Department of Pharmacognosy, Szeged, Hungary
- University of Szeged, Interdisciplinary Centre for Natural Products, Szeged, Hungary
| | - G Oszlánczi
- University of Szeged, Faculty of Medicine, Department of Public Health, Szeged, Hungary
| | - A Lukács
- University of Szeged, Faculty of Medicine, Department of Public Health, Szeged, Hungary
| | - Z Tímár
- SOLVO Biotechnology, Szeged, Hungary
| | - L Tiszlavicz
- University of Szeged, Faculty of Medicine, Department of Pathology, Szeged, Hungary
| | - A Szabó
- University of Szeged, Interdisciplinary Centre for Natural Products, Szeged, Hungary
- University of Szeged, Faculty of Medicine, Department of Public Health, Szeged, Hungary
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87
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Menyhart O, Budczies J, Munkácsy G, Esteva FJ, Szabó A, Miquel TP, Győrffy B. DUSP4 is associated with increased resistance against anti-HER2 therapy in breast cancer. Oncotarget 2017; 8:77207-77218. [PMID: 29100381 PMCID: PMC5652774 DOI: 10.18632/oncotarget.20430] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/27/2017] [Indexed: 01/02/2023] Open
Abstract
The majority of patients develop resistance against suppression of HER2-signaling mediated by trastuzumab in HER2 positive breast cancer (BC). HER2 overexpression activates multiple signaling pathways, including the mitogen-activated protein kinase (MAPK) cascade. MAPK phosphatases (MKPs) are essential regulators of MAPKs and participate in many facets of cellular regulation, including proliferation and apoptosis. We aimed to identify whether differential MKPs are associated with resistance to targeted therapy in patients previously treated with trastuzumab. Using gene chip data of 88 HER2-positive, trastuzumab treated BC patients, candidate MKPs were identified by Receiver Operator Characteristics analysis performed in R. Genes were ranked using their achieved area under the curve (AUC) values and were further restricted to markers significantly associated with worse survival. Functional significance of the two strongest predictive markers was evaluated in vitro by gene silencing in HER2 overexpressing, trastuzumab resistant BC cell lines SKTR and JIMT-1. The strongest predictive MKPs were DUSP4/MKP-2 (AUC=0.75, p=0.0096) and DUSP6/MKP-3 (AUC=0.77, p=5.29E-05). Higher expression for these correlated to worse survival (DUSP4: HR=2.05, p=0.009 and DUSP6: HR=2, p=0.0015). Silencing of DUSP4 had significant sensitization effects – viability of DUSP4 siRNA transfected, trastuzumab treated cells decreased significantly compared to scramble-siRNA transfected controls (SKTR: p=0.016; JIMT-1: p=0.016). In contrast, simultaneous treatment with DUSP6 siRNA and trastuzumab did not alter cell proliferation. Our findings suggest that DUSP4 may represent a new potential target to overcome trastuzumab resistance.
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Affiliation(s)
- Otília Menyhart
- Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Jan Budczies
- Institute of Pathology, Charité University Hospital, Berlin, Germany
| | - Gyöngyi Munkácsy
- Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | | | - András Szabó
- Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Teresa Puig Miquel
- New Terapeutics Targets Laboratory (TargetsLab), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Balázs Győrffy
- Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary.,MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Budapest, Hungary
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88
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Szabó A, Merks RMH. Blood vessel tortuosity selects against evolution of aggressive tumor cells in confined tissue environments: A modeling approach. PLoS Comput Biol 2017; 13:e1005635. [PMID: 28715420 PMCID: PMC5536454 DOI: 10.1371/journal.pcbi.1005635] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 07/31/2017] [Accepted: 06/13/2017] [Indexed: 12/11/2022] Open
Abstract
Cancer is a disease of cellular regulation, often initiated by genetic mutation within cells, and leading to a heterogeneous cell population within tissues. In the competition for nutrients and growth space within the tumors the phenotype of each cell determines its success. Selection in this process is imposed by both the microenvironment (neighboring cells, extracellular matrix, and diffusing substances), and the whole of the organism through for example the blood supply. In this view, the development of tumor cells is in close interaction with their increasingly changing environment: the more cells can change, the more their environment will change. Furthermore, instabilities are also introduced on the organism level: blood supply can be blocked by increased tissue pressure or the tortuosity of the tumor-neovascular vessels. This coupling between cell, microenvironment, and organism results in behavior that is hard to predict. Here we introduce a cell-based computational model to study the effect of blood flow obstruction on the micro-evolution of cells within a cancerous tissue. We demonstrate that stages of tumor development emerge naturally, without the need for sequential mutation of specific genes. Secondly, we show that instabilities in blood supply can impact the overall development of tumors and lead to the extinction of the dominant aggressive phenotype, showing a clear distinction between the fitness at the cell level and survival of the population. This provides new insights into potential side effects of recent tumor vasculature normalization approaches.
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Affiliation(s)
- András Szabó
- Centrum Wiskunde & Informatica, Amsterdam, The Netherlands
| | - Roeland M. H. Merks
- Centrum Wiskunde & Informatica, Amsterdam, The Netherlands
- Mathematical Institute, Leiden University, Leiden, The Netherlands
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89
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Shellard A, Turan M, Szabó A, Singleton R, Mayor R. The front and back of collective chemotaxis. Mech Dev 2017. [DOI: 10.1016/j.mod.2017.04.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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90
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Szabó A, Szabó-Fodor J, Fébel H, Mézes M, Bajzik G, Kovács M. Oral administration of fumonisin B 1 and T-2 individually and in combination affects hepatic total and mitochondrial membrane lipid profile of rabbits. Physiol Int 2017; 103:321-333. [PMID: 28229635 DOI: 10.1556/2060.103.2016.3.5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Weaned rabbits were fed diets contaminated with 2 mg/kg diet T-2 toxin alone, or 10 mg/kg diet fumonisin B1 (FB1) alone, and both toxins in combination (2 + 10 mg/kg, respectively) compared to a toxin-free control diet. Samplings were performed after 4 weeks (blood and liver). Bodyweight of T-2-fed group was lower after 4 weeks; the liver weight was increased dramatically (threefold of control). Liver total phospholipids (PLs) provided slight alterations in the fatty acid (FA) composition; all three toxin-treated groups showed a decrease in palmitoleic acid (C16:1 n7) proportion. In the liver mitochondrial PL FA composition, margaric acid (C17:0) proportion decreased in the separated toxin treatments compared to the combined setting. Oleic acid (C18:1 n9) proportion was increased and arachidonic acid (C20:4 n6) was decreased in the FB1-treated group, while docosapentaenoic acid (C22:5 n3) was decreased in the separated treatments. The total monounsaturation was significantly higher in the FB1 group's mitochondrial PL FA profile. After 4 weeks, all toxin treatments decreased the blood plasma reduced glutathione and glutathione peroxidase activity, and FB1 increased the plasma sphinganine/sphingosine ratio. Both mycotoxins seem to cross the hepatocellular and the hepatic mitochondrial membrane, without drastic membrane disruption, as assessed from the PL FA composition, but inducing detectable lipid peroxidation.
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Affiliation(s)
- A Szabó
- 1 Institute of Diagnostic Imaging and Radiation Oncology, Kaposvár University , Kaposvár, Hungary.,2 "MTA-KE Mycotoxins in the Food Chain" Research Group, Hungarian Academy of Sciences, Kaposvár University , Kaposvár, Hungary
| | - J Szabó-Fodor
- 2 "MTA-KE Mycotoxins in the Food Chain" Research Group, Hungarian Academy of Sciences, Kaposvár University , Kaposvár, Hungary
| | - H Fébel
- 3 Research Institute for Animal Breeding, Nutrition and Meat Science, National Agricultural Research Center , Herceghalom, Hungary
| | - M Mézes
- 4 Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University , Gödöllő, Hungary
| | - G Bajzik
- 1 Institute of Diagnostic Imaging and Radiation Oncology, Kaposvár University , Kaposvár, Hungary
| | - M Kovács
- 2 "MTA-KE Mycotoxins in the Food Chain" Research Group, Hungarian Academy of Sciences, Kaposvár University , Kaposvár, Hungary
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91
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Tóth AZ, Szabó A, Hegyi E, Hegyi P, Sahin-Tóth M. Detection of human elastase isoforms by the ScheBo Pancreatic Elastase 1 Test. Am J Physiol Gastrointest Liver Physiol 2017; 312:G606-G614. [PMID: 28360028 PMCID: PMC5495912 DOI: 10.1152/ajpgi.00060.2017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/28/2017] [Accepted: 03/28/2017] [Indexed: 01/31/2023]
Abstract
Determination of fecal pancreatic elastase content by ELISA is a reliable, noninvasive clinical test for assessing exocrine pancreatic function. Despite the widespread use of commercial tests, their exact molecular targets remain poorly characterized. This study was undertaken to clarify which human pancreatic elastase isoforms are detected by the ScheBo Pancreatic Elastase 1 Stool Test and whether naturally occurring genetic variants influence the performance of this test. Using recombinantly expressed and purified human pancreatic proteinases, we found that the test specifically measured chymotrypsin-like elastases (CELA) 3A and 3B (CELA3A and CELA3B), while CELA2A was not detected. Inactive proelastases, active elastases, and autolyzed forms were detected with identical efficiency. CELA3B elicited approximately four times higher ELISA signal than CELA3A, and we identified Glu154 in CELA3B as the critical determinant of detection. Common genetic variants of CELA3A and CELA3B had no effect on test performance, with the exception of the CELA3B variant W79R, which increased detection by 1.4-fold. Finally, none of the human trypsin and chymotrypsin isoforms were detected. We conclude that the ScheBo Pancreatic Elastase 1 Stool Test is specific for human CELA3A and CELA3B, with most of the ELISA signal attributable to CELA3B.NEW & NOTEWORTHY The ScheBo Pancreatic Elastase 1 Stool Test is widely used to assess pancreatic exocrine function, yet its molecular targets have been poorly defined. We demonstrate that, among the human pancreatic proteinases, the test measures the elastase isoform CELA3B and, to a lesser extent, CELA3A. Genetic variants of the human CELA3 isoforms have no significant effect on test performance.
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Affiliation(s)
- Anna Zsófia Tóth
- 1Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts; ,2Hungarian Academy of Sciences Momentum Gastroenterology Multidisciplinary Research Group, University of Szeged, Szeged, Hungary; and
| | - András Szabó
- 1Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts;
| | - Eszter Hegyi
- 1Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts;
| | - Péter Hegyi
- 2Hungarian Academy of Sciences Momentum Gastroenterology Multidisciplinary Research Group, University of Szeged, Szeged, Hungary; and ,3Institute for Translational Medicine and First Department of Medicine, University of Pécs, Pécs, Hungary
| | - Miklós Sahin-Tóth
- Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts;
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92
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Oláh J, Szénási T, Szunyogh S, Szabó A, Lehotzky A, Ovádi J. Further evidence for microtubule-independent dimerization of TPPP/p25. Sci Rep 2017; 7:40594. [PMID: 28074911 PMCID: PMC5225419 DOI: 10.1038/srep40594] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 12/07/2016] [Indexed: 02/08/2023] Open
Abstract
Tubulin Polymerization Promoting Protein (TPPP/p25) is a brain-specific disordered protein that modulates the dynamics and stability of the microtubule network by its assembly promoting, cross-linking and acetylation enhancing activities. In normal brain it is expressed primarily in differentiated oligodendrocytes; however, at pathological conditions it is enriched in inclusions of both neurons and oligodendrocytes characteristic for Parkinson’s disease and multiple system atrophy, respectively. The objective of this paper is to highlight a critical point of a recently published Skoufias’s paper in which the crucial role of the microtubules in TPPP/p25 dimerization leading to microtubule bundling was suggested. However, our previous and present data provide evidence for the microtubule-independent dimerization of TPPP/p25 and its stabilization by disulphide bridges. In addition, our bimolecular fluorescence complementation experiments revealed the dimerization ability of both the full length and the terminal-free (CORE) TPPP/p25 forms, however, while TPPP/p25 aligned along the bundled microtubule network, the associated CORE segments distributed mostly homogeneously within the cytosol. Now, we identified a molecular model from the possible ones suggested in the Skoufias’s paper that could be responsible for stabilization of the microtubule network in the course of the oligodendrocyte differentiation, consequently in the constitution of the myelin sheath.
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Affiliation(s)
- J Oláh
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - T Szénási
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - S Szunyogh
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - A Szabó
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - A Lehotzky
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - J Ovádi
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
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93
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Boros E, Szabó A, Zboray K, Héja D, Pál G, Sahin-Tóth M. Overlapping Specificity of Duplicated Human Pancreatic Elastase 3 Isoforms and Archetypal Porcine Elastase 1 Provides Clues to Evolution of Digestive Enzymes. J Biol Chem 2017; 292:2690-2702. [PMID: 28062577 DOI: 10.1074/jbc.m116.770560] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/01/2017] [Indexed: 11/06/2022] Open
Abstract
Chymotrypsin-like elastases (CELAs) are pancreatic serine proteinases that digest dietary proteins. CELAs are typically expressed in multiple isoforms that can vary among different species. The human pancreas does not express CELA1 but secretes two CELA3 isoforms, CELA3A and CELA3B. The reasons for the CELA3 duplication and the substrate preferences of the duplicated isoforms are unclear. Here, we tested whether CELA3A and CELA3B evolved unique substrate specificities to compensate for the loss of CELA1. We constructed a phage library displaying variants of the substrate-like Schistocerca gregaria proteinase inhibitor 2 (SGPI-2) to select reversible high affinity inhibitors of human CELA3A, CELA3B, and porcine CELA1. Based on the reactive loop sequences of the phage display-selected inhibitors, we recombinantly expressed and purified 12 SGPI-2 variants and determined their binding affinities. We found that the primary specificity of CELA3A, CELA3B, and CELA1 was similar; all preferred aliphatic side chains at the so-called P1 position, the amino acid residue located directly N-terminal to the scissile peptide bond. P1 Met was an interesting exception that was preferred by CELA1 but weakly recognized by the CELA3 isoforms. The extended substrate specificity of CELA3A and CELA3B was comparable, whereas CELA1 exhibited unique interactions at several subsites. These observations indicated that the CELA1 and CELA3 paralogs have some different but also overlapping specificities and that the duplicated CELA3A and CELA3B isoforms did not evolve distinct substrate preferences. Thus, increased gene dosage rather than specificity divergence of the CELA3 isoforms may compensate for the loss of CELA1 digestive activity in the human pancreas.
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Affiliation(s)
- Eszter Boros
- From the Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary and.,Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02118
| | - András Szabó
- Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02118
| | - Katalin Zboray
- From the Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary and
| | - Dávid Héja
- From the Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary and
| | - Gábor Pál
- From the Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary and
| | - Miklós Sahin-Tóth
- Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02118 .,the Center for Exocrine Disorders
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94
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Ács O, Péterfia B, Hollósi P, Luczay A, Török D, Szabó A. Methylation Status of CYP27B1 and IGF2 Correlate to BMI SDS in Children with Obesity. Obes Facts 2017; 10:353-362. [PMID: 28787727 PMCID: PMC5644970 DOI: 10.1159/000477462] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 05/02/2017] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Worldwide increasing childhood obesity is due to interactions between environmental and genetic factors, linked together by epigenetic mechanisms such as DNA methylation. METHODS 82 obese children (>95th BMI percentile , age: 3-18 years) were included. Anthropometric data, metabolic parameters, 25-OH vitamin D (25OHD), and pubertal status were recorded, 24-hour blood pressure monitoring was performed. BMI standard deviation score (SDS) was calculated. Using candidate gene approach, obesity- (insulin-like growth factor 2 (IGF2), proopiomelanocortin (POMC)) and vitamin D metabolism-related genes (1-alfa-hydroxylase (CYP27B1), VDR) regulated by DNA methylation were selected. After isolating DNA from peripheral blood, bisulfite conversion, bisulfite specific polymerase chain reaction (BS-PCR), and pyrosequencing were carried out. RESULTS No significant correlation between 25-OHD and metabolic parameters and DNA methylation status, but a tendency of positive correlation between VDR methylation status and 25-OHD (r = 0.2053,p = 0.066) were observed. Significant positive correlations between BMI SDS and CYP27B1 hypermethylation (r = 0.2371,p = 0.0342) and a significant negative correlation between IGF2 hypomethylation and BMI SDS (r = -0.305,p = 0.0059) were found. Conclusions Rate of obesity shows correlation with DNA methylation. Hypomethylation of IGF2 and hypermethylation of CYP27B1 genes might positively influence the rate of BMI observed in obese children.
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Affiliation(s)
- Orsolya Ács
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
- *Orsolya Dóra Ács, MD, 2nd Department of Pediatrics, Semmelweis University, 1094 Budapest, Tűzoltó utca 7–9, Hungary,
| | - Bálint Péterfia
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Péter Hollósi
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
- Tumor Progression Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Andrea Luczay
- 1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Dóra Török
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - András Szabó
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
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95
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Abstract
Adult male Wistar rats were enrolled in a study to test the acute hepatic effects of 50 mg/kg fumonisin B1 in feed for 5 days. Fumonisin B1 depressed growth and feed intake, and absolute and relative liver weight showed a significant increase. The proportions of C17:0, C18:3 n3, C22:5 n3 and C22:6 n3 fatty acids decreased in the hepatic phospholipid fraction. All proportional decreases modified the hepatocellular membrane lipids into a more rigid state. The fatty acid profile modifications were partly compensated for by endogenous glutathione (preventing the formation of conjugated dienes and trienes as initial phase lipid peroxidation indicators), while the enzymatic antioxidant defence system (glutathione peroxidase) was unaltered. In contrast, hepatic malondialdehyde, the cytotoxic product of end-phase lipid peroxidation showed a concentration increase even after 5 days of feeding. The results indicate a rather strong and rapid hepatic effect of FB1, immediately impairing membrane phospholipids, even before the enzymatic antioxidant defence is activated.
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Affiliation(s)
- András Szabó
- 1Institute of Diagnostic Imaging and Radiation Oncology, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
- 2 Hungarian Academy of Sciences — Kaposvár University ‘MTA-KE Mycotoxins in the Food Chain’ Research Group, Kaposvár, Hungary
| | - Judit Szabó-Fodor
- 2 Hungarian Academy of Sciences — Kaposvár University ‘MTA-KE Mycotoxins in the Food Chain’ Research Group, Kaposvár, Hungary
| | - Hedvig Fébel
- 3Research Institute for Animal Breeding, Nutrition and Meat Science, National Agricultural Research Centre, Herceghalom, Hungary
| | - Miklós Mézes
- 4Department of Nutrition, Faculty of Agricultural and Environmental Sciences, Szent István University, Gödöllő, Hungary
| | - Imre Repa
- 1Institute of Diagnostic Imaging and Radiation Oncology, Kaposvár University, Guba S. u. 40, H-7400 Kaposvár, Hungary
| | - Melinda Kovács
- 2 Hungarian Academy of Sciences — Kaposvár University ‘MTA-KE Mycotoxins in the Food Chain’ Research Group, Kaposvár, Hungary
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96
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Nagy Á, Pongor LS, Szabó A, Santarpia M, Győrffy B. KRAS driven expression signature has prognostic power superior to mutation status in non-small cell lung cancer. Int J Cancer 2016; 140:930-937. [PMID: 27859136 PMCID: PMC5299512 DOI: 10.1002/ijc.30509] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 10/22/2016] [Accepted: 10/28/2016] [Indexed: 01/22/2023]
Abstract
KRAS is the most frequently mutated oncogene in non‐small cell lung cancer (NSCLC). However, the prognostic role of KRAS mutation status in NSCLC still remains controversial. We hypothesize that the expression changes of genes affected by KRAS mutation status will have the most prominent effect and could be used as a prognostic signature in lung cancer. We divided NSCLC patients with mutation and RNA‐seq data into KRAS mutated and wild type groups. Mann‐Whitney test was used to identify genes showing altered expression between these cohorts. Mean expression of the top five genes was designated as a “transcriptomic fingerprint” of the mutation. We evaluated the effect of this signature on clinical outcome in 2,437 NSCLC patients using univariate and multivariate Cox regression analysis. Mutation of KRAS was most common in adenocarcinoma. Mutation status and KRAS expression were not correlated to prognosis. The transcriptomic fingerprint of KRAS include FOXRED2, KRAS, TOP1, PEX3 and ABL2. The KRAS signature had a high prognostic power. Similar results were achieved when using the second and third set of strongest genes. Moreover, all cutoff values delivered significant prognostic power (p < 0.01). The KRAS signature also remained significant (p < 0.01) in a multivariate analysis including age, gender, smoking history and tumor stage. We generated a “surrogate signature” of KRAS mutation status in NSCLC patients by computationally linking genotype and gene expression. We show that secondary effects of a mutation can have a higher prognostic relevance than the primary genetic alteration itself. What's new? As many as one‐quarter of patients with lung adenocarcinoma (AC), a form of non‐small cell lung cancer (NSCLC), exhibit tumor‐associated mutations in KRAS. Whether KRAS mutation status and expression are correlated to prognosis, however, remains unclear. In this study, a surrogate signature of KRAS mutation status was generated for NSCLC by relating genotype to gene‐expression signature. The approach led to the identification of a significant correlation between overall survival in lung AC and the transcriptomic fingerprint of somatic KRAS mutations. Three genes strongly influenced by KRAS mutation may be relevant to the search for novel NSCLC drug targets.
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Affiliation(s)
- Ádám Nagy
- MTA TTK Lendület Cancer Biomarker Research Group, Budapest, Magyar, Hungary.,Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Lőrinc Sándor Pongor
- MTA TTK Lendület Cancer Biomarker Research Group, Budapest, Magyar, Hungary.,Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - András Szabó
- Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Mariacarmela Santarpia
- Medical Oncology Unit, Department of Human Pathology 'G. Barresi', University of Messina, Italy
| | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, Budapest, Magyar, Hungary.,Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
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97
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Hafner D, Szabó A, D’Costa L, Szabó-Fodor J, Tornyos G, Blochné Bodnár Z, Ölbeiné Horvatovich K, Baloghné Zándoki E, Bóta B, Kovács M. Individual and combined effects of feed artificially contaminated with with fumonisin B1 and T-2 toxin in weaned rabbits. WORLD MYCOTOXIN J 2016. [DOI: 10.3920/wmj2016.2067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Co-contamination of feed and feed raw materials with two or more mycotoxins is frequently reported, however, only a few studies have investigated the combined effects of low doses of multiple mycotoxins. In the present study the individual and combined effects of 10 mg/kg fumonisin B1 and 2 mg/kg T-2 toxin (n=12/group) were investigated in weaned rabbits. Mycotoxin contaminated feed was produced by adding fungal cultures of Fusarium verticillioides and Fusarium sporotrichioides, and fed to 40 days old rabbits during 28 days. Feed intake and body weight were measured weekly, serum biochemistry and antioxidant parameters on day 0, 14 and 28, while histopathological examination and comet assay were performed at the end of the experiment. T-2 exposure both alone and in combination resulted in 15-18% less final body weight compared to the control and FB1 treatment. There was a significant increase in the concentration of plasma total protein, albumin, fructosamine and creatinine in the group treated with FB1 compared to the control. The liver and the kidney of most animals treated with T-2 toxin, FB1 and their combination showed pathological changes, occurring more frequent in animals exposed to both toxins. T-2 resulted in depletion of lymphocytes in the spleen. FB1 and T-2 exerted synergistic effect on the antioxidant/oxidative parameters after 2 weeks of exposure, manifesting in less glutathione and glutathione peroxidase, while more malondialdehyde was produced. Both toxins caused DNA damage in the lymphocytes, which was more pronounced in the group fed T-2 toxin and T-2 combined with FB1, without additive or synergistic effects.
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Affiliation(s)
- D. Hafner
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - A. Szabó
- Institute of Diagnostic Imaging and Radiation Oncology, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - L. D’Costa
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - J. Szabó-Fodor
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - G. Tornyos
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - Zs. Blochné Bodnár
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - K. Ölbeiné Horvatovich
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - E. Baloghné Zándoki
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - B. Bóta
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
| | - M. Kovács
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
- MTA-KE Mycotoxins in the Food Chain Research Group, Faculty of Agricultural and Environmental Sciences, Kaposvár University, Guba S. 40., Kaposvár 7400, Hungary
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98
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Lánczky A, Nagy Á, Bottai G, Munkácsy G, Szabó A, Santarpia L, Győrffy B. miRpower: a web-tool to validate survival-associated miRNAs utilizing expression data from 2178 breast cancer patients. Breast Cancer Res Treat 2016; 160:439-446. [PMID: 27744485 DOI: 10.1007/s10549-016-4013-7] [Citation(s) in RCA: 563] [Impact Index Per Article: 70.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/08/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE The proper validation of prognostic biomarkers is an important clinical issue in breast cancer research. MicroRNAs (miRNAs) have emerged as a new class of promising breast cancer biomarkers. In the present work, we developed an integrated online bioinformatic tool to validate the prognostic relevance of miRNAs in breast cancer. METHODS A database was set up by searching the GEO, EGA, TCGA, and PubMed repositories to identify datasets with published miRNA expression and clinical data. Kaplan-Meier survival analysis was performed to validate the prognostic value of a set of 41 previously published survival-associated miRNAs. RESULTS All together 2178 samples from four independent datasets were integrated into the system including the expression of 1052 distinct human miRNAs. In addition, the web-tool allows for the selection of patients, which can be filtered by receptors status, lymph node involvement, histological grade, and treatments. The complete analysis tool can be accessed online at: www.kmplot.com/mirpower . We used this tool to analyze a large number of deregulated miRNAs associated with breast cancer features and outcome, and confirmed the prognostic value of 26 miRNAs. A significant correlation in three out of four datasets was validated only for miR-29c and miR-101. CONCLUSIONS In summary, we established an integrated platform capable to mine all available miRNA data to perform a survival analysis for the identification and validation of prognostic miRNA markers in breast cancer.
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Affiliation(s)
- András Lánczky
- MTA TTK Lendület Cancer Biomarker Research Group, Magyar Tudósok körútja 2, Budapest, 1117, Hungary
| | - Ádám Nagy
- MTA TTK Lendület Cancer Biomarker Research Group, Magyar Tudósok körútja 2, Budapest, 1117, Hungary
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Giulia Bottai
- Oncology Experimental Therapeutics Unit, Humanitas Clinical and Research Institute, Via Manzoni 113, 20089, Rozzano-Milan, Italy
| | - Gyöngyi Munkácsy
- MTA TTK Lendület Cancer Biomarker Research Group, Magyar Tudósok körútja 2, Budapest, 1117, Hungary
- MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - András Szabó
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Libero Santarpia
- Oncology Experimental Therapeutics Unit, Humanitas Clinical and Research Institute, Via Manzoni 113, 20089, Rozzano-Milan, Italy.
| | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, Magyar Tudósok körútja 2, Budapest, 1117, Hungary.
- Department of Pediatrics, Semmelweis University, Budapest, Hungary.
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99
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Abstract
Collective cell migration has emerged in the recent decade as an important phenomenon in cell and developmental biology and can be defined as the coordinated and cooperative movement of groups of cells. Most studies concentrate on tightly connected epithelial tissues, even though collective migration does not require a constant physical contact. Movement of mesenchymal cells is more independent, making their emergent collective behaviour less intuitive and therefore lending importance to computational modelling. Here we focus on such modelling efforts that aim to understand the collective migration of neural crest cells, a mesenchymal embryonic population that migrates large distances as a group during early vertebrate development. By comparing different models of neural crest migration, we emphasize the similarity and complementary nature of these approaches and suggest a future direction for the field. The principles derived from neural crest modelling could aid understanding the collective migration of other mesenchymal cell types.
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Affiliation(s)
- András Szabó
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.
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100
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Matics Z, Cullere M, Szín M, Gerencsér Z, Szabó A, Fébel H, Odermatt M, Radnai I, Dalle Zotte A, Szendrő Z. Effect of a dietary supplementation with linseed oil and selenium to growing rabbits on their productive performances, carcass traits and fresh and cooked meat quality. J Anim Physiol Anim Nutr (Berl) 2016; 101:685-693. [PMID: 27550717 DOI: 10.1111/jpn.12589] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/26/2016] [Indexed: 11/29/2022]
Abstract
The present experiment tested a dietary supplementation with linseed oil and selenium to growing rabbits. The basal diet (B) contained 3% sunflower oil, while it was substituted with 3% linseed oil in the experimental feed (S). The selenium (Se) content of the two diets was 0.10 vs. 0.46 mg/kg. Rabbits were fed with B diet from the age of 18 days. One group was fed with the B diet until 11 weeks of age (group B), whereas the experimental groups were fed with S diet for 1, 2, 3 or 4 weeks (groups S1, S2, S3 and S4, respectively), before slaughtering (11 weeks of age). Live performance and carcass traits of rabbits, fatty acid (FA) profile and selenium content of their hind leg (HL) and Longissimus thoracis et lumborum (LTL) meat were considered in this study. In addition, the effect of two different cooking methods on the nutritional value of the enriched HL meat was also assessed. The tested dietary supplementation only minimally affected the live performance and carcass traits of rabbits. The S supplementation significantly reduced the Σ n-6 FA and increased the Σ n-3 FA of the HL meat and LTL meat, compared to the B diet (p < 0.001); thus, n-6/n-3 ratio was improved (p < 0.001). In addition, HL meat and LTL meat of S fed rabbits were significantly enriched in Se reaching a twofold increase in both meat cuts (p < 0.01). Therefore, the S supplementation improved the functional value of the rabbit meat. The heat treatment affected cooking loss, Se and vitamin E contents as well as the oxidative status of the HL meat (p < 0.001), with the different cooking methods providing different results. In addition, even if the beneficial C20:5 n-3 and C22:6 n-3 decreased with cooking, the n-6/n-3 ratio remained unaffected.
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Affiliation(s)
- Zs Matics
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - M Cullere
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Padova, Italy
| | - M Szín
- Olivia Ltd, Lajosmizse, Hungary
| | - Zs Gerencsér
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - A Szabó
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - H Fébel
- Research Institute for Animal Breeding and Nutrition, Herceghalom, Hungary
| | | | - I Radnai
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
| | - A Dalle Zotte
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Padova, Italy
| | - Zs Szendrő
- Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary
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