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Authors: Viktória Szirmai, Zsuzsanna Váradi, Szilvia Kovács, Júlia Schuchmann and Nóra Baranyai

The article presents the urban sprawl phenomena in Central European capitals and in the Budapest metropolitan region, based on statistical data and empirical survey analysis. The study concentrates on territorial consumption issues, which are determined by the suburbanisation processes, the changes of city and outskirt populations, and the transformation of land use patterns. It describes the negative environmental and social impacts (air pollution, spatial and social stratification phenomena and conflicts) as well. Moreover the paper summarizes the residential requirements to offer a hypothesis concerning the possible urban sprawl in the future. Finally it discusses the excessive criticism of the urban sprawl phenomena.

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Authors: Farzaneh Garousi, Béla Kovács, Éva Domokos-Szabolcsy and Szilvia Veres

Supplement of common fertilizers with selenium (Se) for crop production will be an effective way to produce selenium-rich food and feed. The value of green pea seeds and forages as alternative protein source can be improved by using agronomic biofortification. Therefore, biological changes of green pea (Pisum sativum L.) and influences of inorganic forms of Se (sodium selenite and sodium selenate) at different concentrations on the accumulation of magnesium (Mg) and phosphorus (P) were investigated in greenhouse experiment. 3 mg kg−1 of selenite had positive effects to enhance photosynthetic attributes and decrease lipid peroxidation significantly. At the same time, Se accumulation increased in all parts of plant by increasing Se supply. Moreover, Mg and P accumulations were significantly increased at 3 mg kg−1 selenite and 1 mg kg−1 selenate treatments, respectively. By contrast higher selenite concentrations (≥30 mg kg−1) exerted toxic effects on plants. Relative chlorophyll content, actual photochemical efficiency of PSII (ФPSII) and Mg accumulation showed significant decrease while membrane lipid peroxidation increased. Thus, the present findings prove Se biofortification has positive effects on biological traits of green pea to provide it as a proper functional product.

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Authors: Tünde Pusztahelyi, L. Radócz, Cs. Gellért, Szilvia Kovács, Zsuzsanna Szabó, I. Pócsi and A. Vad

There are extensive data on effects of antifungal agents on the plant pathogens, especially on Fusariums spp. species. However, investigations on the interaction of chemicals and the treated cultivars are rare. The aim of the study was to test two types of fungicide mixtures, azoxystrobin-propiconazole, and prothioconazole-tebuconazole, which are applied in wheat cultivars intensively, on six fodder maize hybrids that were infected with Fusarium proliferatum in the R1 growth stage in a field trial. The effect of the fungicide treatment was tested on the starch content and antifungal, antioxidant polyphenols of the kernels in the R3–R4 and R6 stage of the cultivars. The level of the fungal presence and the fumonisin concentration of the kernels were increased significantly under the artificial infection. The fumonisin concentration was variable at the R6 stage of the hybrid maize kernels. The treatment with prothioconazole and tebuconazole was found to be suitable when it was done before flowering, while the azoxystrobin-propiconazole treatments were equally successful before and after maize flowering considering the decreasing fumonisin concentration of the kernels. Both fungicide mixtures, when they were applied after maize flowering, affected the starch biosynthesis to the R3–R4 stage significantly. Meanwhile, azoxystrobin-propiconazole also significantly affected the antioxidant flavone/flavanol contents from the R3–R4 stage to the R6 stage.

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Authors: Krisztina Laub, Adrienn Tóthpál, Eszter Kovács, Judit Sahin-Tóth, Andrea Horváth, Szilvia Kardos and Orsolya Dobay

We collected nasal samples from 1,390 healthy 3–7 years old children in Szolnok city, Hungary, in 2012. We detected 476 Staphylococcus aureus isolates from 474 children. In two occasions, two different S. aureus were isolated, based on hemolysis type and pulsed-field gel electrophoresis pattern. S. aureus carriage rate was calculated to be 34.1% similar to others studies. Male gender was found to be a risk factor for carriage by statistical analysis. Altogether, four methicillin-resistant S. aureus (MRSA) strains were detected by mecA polymerase chain reaction, which means 0.8% community-acquired MRSA prevalence among the S. aureus isolates. All MRSA strains harbored the SCCmec type IV cassette (typical for CA-MRSA) and belonged to ST45 by multilocus sequence typing. During antibiotic susceptibility testing, we measured the following resistance rates: 0.0% for mupirocin, 0.2% for ciprofloxacin, 0.6% for gentamicin and oxacillin, 3.4% for tetracycline, 9.5% for clindamycin, 10.3% for erythromycin, and 91.4% for penicillin, which are generally lower compared with Hungarian clinical isolates.

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Authors: Ágnes Erdeiné Kis, Krisztián Laczi, Szilvia Zsíros, Péter Kós, Roland Tengölics, Naila Bounedjoum, Tamás Kovács, Gábor Rákhely and Katalin Perei

Petroleum hydrocarbons and derivatives are widespread contaminants in both aquifers and soil, their elimination is in the primary focus of environmental studies. Microorganisms are key components in biological removal of pollutants. Strains capable to utilize hydrocarbons usually appear at the contaminated sites, but their metabolic activities are often restricted by the lack of nutrients and/or they can only utilize one or two components of a mixture. We isolated a novel Rhodococcus sp. MK1 strain capable to degrade the components of diesel oil simultaneously. The draft genome of the strain was determined and besides the chromosome, the presence of one plasmid could be revealed. Numerous routes for oxidation of aliphatic and aromatic compounds were identified. The strain was tested in ex situ applications aiming to compare alternative solutions for microbial degradation of hydrocarbons. The results of bioaugmentation and biostimulation experiments clearly demonstrated that – in certain cases – the indigenous microbial community could be exploited for bioremediation of oil-contaminated soils. Biostimulation seems to be efficient for removal of aged contaminations at lower concentration range, whereas bioaugmentation is necessary for the treatment of freshly and highly polluted sites.

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Authors: Sándor Kovács, János Haas, Péter Ozsvárt, Ladislav A. Palinkaš, Gabriella Kiss, Ferenc Molnár, Sándor Józsa and Szilvia Kövér

Abstract

The Mesozoic complex of Darnó Hill area in NE Hungary, according to well core documentation, is made up of two units. The upper unit, the Darnó Unit s.s., consists predominantly of blocks of ophiolitic rocks (pillow and massive basalt, gabbro) and subordinate abyssal sediments (red radiolarite and red pelagic mudstone of either Ladinian-Carnian or Bathonian-Callovian age, as well as bluish-grey, sometimes blackish siliceous shale of the latter age). The basalt is geochemically of MOR type, based on earlier evaluations. However, it comes in two types: reddish or greenish amygdaloidal pillow basalts with peperitic facies containing reddish micritic limestone inclusions, and green basalts without any sedimentary carbonate inclusion. The former type is probably Middle- Triassic, advanced rifting stage-related basalt, whereas the latter is probably of Jurassic age, corresponding to the Szarvaskõ-type basalt of the western Bükk Mountains. Pre-Miocene presence of an ultramafic sheet above the complex is indicated by serpentinite pebbles in the Lower Miocene Darnó Conglomerate.

The lower unit, corresponding to the Mónosbél Unit of the western Bükk Mountains, consists of lower slope and toe-of-slope type sediments: dark grey shale and bluish-grey siliceous shale of Jurassic age, both showing distal turbiditic character, with frequently interbedded carbonate turbidites and debris flow deposits containing cm- to dm-sized limestone and micaceous sandstone clasts. One to ten m-sized slide blocks of reddish, siliceous Triassic Bódvalenke-type limestone associated with the above-mentioned reddish, amygdaloidal basalt also occur. In one of the studied cores a block comprising evaporitic siliciclastics akin to those of the Middle Permian Szentlélek Formation and black, fossiliferous limestone similar to the Upper Permian Nagyvisnyó Limestone Formation of the Bükk Mountains, was also encountered.

A preliminary comparison with similar Triassic advanced rifting-type basalt and limestone/radiolarite of the western ophiolite zone of the Balkan Peninsula is presented (Fig. 1): the Zagorje region of NW Croatia, the Zlatibor-Zlatar Mountains of SW Serbia, and the North Pindos and Othrys Mountains, as well as Euboea Island, of Northern Greece. We propose the terms “Loggitsi Basalt” for such Triassic basalt containing peperitic facies, after the village of Loggitsion located in the central part of the Othrys Mts, and “Bódvalenke Limestone” for the transitional facies between Hallstatt Limestone and Triassic red radiolarite, after the village of Bódvalenke located in the Rudabánya Hills. The northwesternmost occurrence of both of these typical Neotethyan formations can be found in NE Hungary (Darnó Hill and Bódva Unit of Rudabánya Hills, respectively).

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Authors: Valentine Ndze, Eric Achidi, Hajnalka Papp, Eszter Kovács, Szilvia Farkas, Dieudonne Adiogo, Péter Kisfali, Marxcel Ngeng, Marie Abena, Vito Martella, Mathew Esona and Krisztián Bányai

Group A rotaviruses (RVA) are an important enteric pathogen in humans and livestock animals. Transmission of animal RVA strains to humans has been documented on several occasions. A reverse route of transmission of RVA under natural circumstances is anticipated, although evidence is scarce. However, experimental studies indicated that animals can be infected with human RVAs. By screening the stool samples collected from 157 cattle during 2011 in two Cameroonian villages, four samples (2.5%) were found positive for RVA. Upon sequence analysis of a 410 bp fragment of the VP7 gene, the RVA strains shared up to 100% nt identity to each other and to G12 RVAs identified in human patients living in the same geographic regions. This finding provides evidence for a human-to-animal transmission of an epidemic human rotavirus strain.

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Authors: Tamás Tahin, Szilvia Herczeg, László Gellér, András Mihály Boros, Orsolya Mária Kovács, Nándor Szegedi, Éva Fórizs, Szabolcs Szilágyi, István Osztheimer, Béla Merkely and Gábor Széplaki

Absztrakt:

Bevezetés: Ismert, hogy katéteres ablatio által okozott szívizom-károsodás következtében megnő a szívizom-specifikus nekroenzimek koncentrációja. Célkitűzés: A magas érzékenységű troponin T (hsTnT) és a szívizom-specifikus kreatin-kináz (CKMB) szintje középtávú változásának elemzése pitvarfibrilláció (PF), pitvari flutter (PFlu), AV-csomó reentry tachycardia (AVNRT) rádiófrekvenciás katéteres ablatióját követően, illetve elektrofiziológiai vizsgálat után. Módszer: Rádiófrekvenciás ablatión, illetve elektrofiziológiai vizsgálaton átesett betegeket vontunk be konszekutívan prospektív vizsgálatunkba. Sorozatvérmintákból meghatároztuk a hsTnT- és a CKMB-szinteket a procedúra előtt és után közvetlenül, majd 4 és 20 órával és 3 hónappal később. Eredmények: Negyvenhét, 55 ± 13 év átlagéletkorú beteget (10 elektrofiziológiai vizsgálat, 12 AVNRT, 13 PFlu és 12 PF) vontunk be vizsgálatunkba. A hsTnT-szintek minden csoportban szignifikánsan megemelkedtek a beavatkozást követően, a CKMB csak a PF-csoportban változott. A hsTnT-szint négy órával a beavatkozást követően az összes ablatión átesett betegnél és az elektrofiziológiai vizsgálaton átesett betegek 80%-ánál meghaladta a referenciatartományt. A legmagasabb átlagos hsTnT-koncentrációk EFV, AVNRT, PFlu esetén 24 ± 11, 260 ± 218 és 541 ± 233 ng/l-nek bizonyultak. A legmagasabb hsTnT-szint a PF-ablatiós csoportban volt kimutatható 20 órával az ablatio után (799 ± 433 ng/l). Pozitív korrelációt találtunk a rádiófrekvenciás ablatiót követő hsTnT-szint és az ablatio ideje között. Következtetések: A hsTnT alkalmas a rádiófrekvenciás ablatio és az elektrofiziológiai vizsgálat utáni myocardialis necrosis vizsgálatára, az ablatión átesett betegek mindegyikénél; elektrofiziológiai vizsgálat után 80%-ban pozitív a hsTnT. A necrosis mértéke jelentősen függ a beavatkozás típusától, és korrelál az ablatio kiterjedtségével. A fentiekben leírt megfigyelések iránymutatásként szolgálnak a rádiófrekvenciás ablatio utáni hsTnT-szint megfelelő értelmezéséhez. Orv Hetil. 2019; 160(14): 540–548.

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Authors: Zoltán Szabó, Attila Erdélyi, Andrea Gubicskóné Kisbenedek, Tamás Ungár, Éva Lászlóné Polyák, Szilvia Szekeresné Szabó, Réka Erika Kovács, László Bence Raposa and Mária Figler

Absztrakt

A növényi alapú étrend egy régi-új táplálkozási irányzat. Jelen összefoglaló tanulmányban történeti alapokból kiindulva kívánjuk ismertetni ezt a napjainkban egyre népszerűbb táplálkozási törekvést. Célunk bemutatni a növényi alapú táplálkozást mint primer prevenciós eszközt. Irodalmi adatok alapján kritikusan elemezzük a növényi alapú étrendhez kapcsolódó korábbi téves vélekedéseket (fehérje-, B12-vitamin-, folsav-, vasbevitel), és megfelelő fogalmi alapot teremtünk ezen étrend értelmezéséhez, amelynek gerincét a gyümölcsök, zöldségek, teljes kiőrlésű gabonák, hüvelyesek és az olajos magvak alkotják. Ismertetjük a növényi alapú étrend pozitív élettani és betegségkockázat-csökkentő hatását. Az elhízás talaján kialakuló metabolikus és szív-ér rendszert érintő betegségek nagyrészt megelőzhetőek lennének egy helyesen összeállított növényi alapú étrenddel. A daganatos megbetegedésben szenvedő betegek esetén az állati eredetű élelmiszerek háttérbe szorítása a növényi alapúakkal szemben is igazoltan pozitív hatású. Áttekintésünk bemutatja, hogy ez a fajta táplálkozás számos egészségügyi probléma esetén alkalmazható, és hosszú távon is fenntartható megoldást biztosít a legújabb kor egészségügyi kihívásaira. Orv. Hetil., 2016, 157(47), 1859–1865.

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Authors: András N. Zsidó, Gergely Darnai, Orsolya Inhóf, Gábor Perlaki, Gergely Orsi, Szilvia Anett Nagy, Beatrix Lábadi, Kata Lénárd, Norbert Kovács, Tamás Dóczi and József Janszky

Background and aims

Internet addiction is a non-substance-related addiction disorder with progressively growing prevalence. Internet addiction, like substance-related addictions, has been linked with high impulsivity, low inhibitory control, and poor decision-making abilities. Cortical thickness measurements and trait impulsivity have been shown to have a distinct relationship in addicts compared to healthy controls. Thus, we test whether the cortical correlates of trait impulsivity are different in Internet addicts and healthy controls, using an impulsive control group (smokers).

Methods

Thirty Internet addicts (15 females) and 60 age- and gender-matched controls (30 smokers, all young adults aged 19–28 years) were scanned using a 3T MRI scanner and completed the Barratt Impulsiveness Scale.

Results

Internet addicts had a thinner left superior temporal cortex than controls. Impulsivity had a significant main effect on the left pars orbitalis and bilateral insula, regardless of group membership. We identified divergent relationships between trait impulsivity and thicknesses of the bilateral middle temporal, right superior temporal, left inferior temporal, and left transverse temporal cortices between Internet addicts and healthy controls. Further analysis with smokers revealed that the left middle temporal and left transverse temporal cortical thickness change might be exclusive to Internet addiction.

Discussion

The effects of impulsivity, combined with a long-term exposure to some specific substance or stimuli, might result in different natures of relationships between impulsivity and brain structure when compared to healthy controls.

Conclusion

These results may indicate that Internet addiction is similar to substance-related addictions, such that inefficient self-control could result in maladaptive behavior and inability to resist Internet use.

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