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Wyszukujesz frazę "Wolińska, L." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    MicroRNA expression in liver of whitefish (Coregonus lavaretus) exposed to microcystin-LR
    Autorzy:
    Brzuzan, P.
    Woźny, M.
    Wolińska, L.
    Piasecka, A.
    Łuczyński, M. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/363280.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    Coregonus lavaretus
    Dicer
    histon H2A
    mikrocystyna LR
    miRNAs
    toksyczność
    histone H2A
    microcystin LR
    toxicity
    Opis:
    MicroRNAs (miRNAs) are small, highly conserved, non-coding RNAs that regulate gene expression of target mRNAs through cleavage or translational inhibition. In the field of toxicology, the relationship between toxicity and microRNA expression is poorly understood. In the present study we analyzed the abundance of 9 selected miRNAs (omy-miR-21, omy-miR-21t, omy-miR-122, omy-miR-125a, omy-miR-125b, omy-miR-125t, omy-miR-199-5a, omy-miR-295, omy-let-7a) and mRNA of 3 genes (histone H2A, ribosome protein rpl19, and Dicer which is a miRNA processing enzyme) in liver samples of whitefish exposed to Microcystin-LR (MC-LR) at a dose of 100µg*kg-1body weight for 24 or 48h. In the examined liver tissue, omymiR-122 showed the highest relative constitutive level, what is consistent with data obtained from fish and mammals. Unexpectedly, the reference H2A mRNA level was consistently up-regulated (over 20-fold; P<0.05) in fish liver after both 24 and 48h of exposure to MC-LR. The result may suggest that MC-LR acts as an initiator of specific cell-physiologic signals triggering DNA replication in fish liver cells. MC-LR treatment had no effect on the examined miRNAs levels, except for omy-miR-125a and omy-let-7a. Whereas omy-miR-125a was up-regulated (ER=2.68; S.E. 1.61-6.78; P<0.05), omy-let-7a was down-regulated (ER=0.55; S.E. 0.32-0.79; P<0.05) in whitefish liver after 48h of the treatment with MC-LR, when compared to controls. More work with the fish is essential for understanding the crosstalk of the regulatory network controlled by the two miRNAs in the context of MC-LR toxicity.
    Źródło:
    Environmental Biotechnology; 2010, 6, 2; 53-60
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary evaluation of ER- and AhR-mediated gene expression patterns in rainbow trout (Oncorhynchus mykiss) liver after short-term exposure to zearalenone in binary mixtures
    Autorzy:
    Woźny, M.
    Brzuzan, P.
    Wolińska, L.
    Góra, M.
    Łuczyński, M. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/363144.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    receptor AhR
    benzo(a)piren
    ścieżka sygnałowa
    17beta-estradiol
    receptor estrogenowy
    zearalenone
    aryl hydrocarbon receptor
    benzo(a)pyrene
    crosstalk
    estrogen receptor
    Opis:
    While estrogenic properties of mycotoxin zearalenone (ZEA) has been an extensively studied issue, little is known about molecular background of its biological responses that cannot be simply explained by the estrogenic potential. The present study describes effects of ZEA (10mg*kg-1 body weight) in binary mixtures either with benzo[a]pyrene (B[a]P), or with 17β-estradiol (E2) on ER- and AhR-dependent gene expression in juvenile rainbow trout liver, evaluated using Real-Time qPCR. The study revealed dual nature of ZEA, as the treatment with this compound alone increased mRNA levels of both ER- and AhR-mediated gene expression. However, our results did not show any synergistic or additive effect of ZEA in binary mixures with E2 or B[a]P on studied gene expression levels. Whether the intriguing potential of ZEA to elicit distinct signals was a result of binding affinity to AhR or/and ER and AhR mutual receptor interactions, should be investigated in further experiments.
    Źródło:
    Environmental Biotechnology; 2010, 6, 1; 16-23
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary study on adverse effects of phenanthrene and its methyl and phenyl derivatives in larval zebrafish, Danio rerio
    Autorzy:
    Wolińska, L.
    Brzuzan, P.
    Woźny, M.
    Góra, M.
    Łuczyński, M. K.
    Podlasz, P.
    Kolwicz, S.
    Piasecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/363152.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    toksyczność ostra
    CYP1A
    cyp1b1
    geny vtg
    ekspresja mRNA
    stężenie nie wywołujące efektu
    WWA
    Real-Time qPCR
    acute toxicity
    cyp1a genes
    cyp1b1 genes
    vtg genes
    mRNA expression
    No Effect Concentration
    PAHs
    Opis:
    Toxic effects of polycyclic aromatic hydrocarbons (PAHs) have been extensively studied in fish, although knowledge concerning biological activities of phenanthrene and its derivatives remains still incomplete. The aim of this work was to evaluate lethal and sublethal effects of benzo(a)pyrene, phenanthrene and phenanthrene derivatives (1-methylphenanthrene, 4-methylphenanthrene, 1-phenylphenanthrene and 4-phenylphenanthrene) on zebrafish (Danio rerio) larvae. We conducted acute toxicity test, using 96h static renewal exposure to a series of the PAH concentrations (0.05, 0.50, 5.00, 50.00µmol*l-1), to determine the No Effect Concentration (NEC) value for each compound examined. The mean NEC estimates obtained in the study were 5.16۪.45µmol*l-1 (B[a]P), 4.88۪.13µmol*l-1 (Ph), 40.24䔰.93µmol*l-1 (1P-Ph), 47.92ۭ.61µmol*l-1 (1M-Ph), 24.31۱.33µmol*l-1 (4P-Ph) and 3.11۫.01µmol*l-1 (4M-Ph) and suggested the following order of PAH toxicities on Danio rerio larvae: 4M-Ph>Ph˜B[a]P>4PPhP-Ph>1M-Ph. To gain insight into possible molecular mechanisms of apparent toxicity of phenanthrene derivatives on zebrafish larvae, we examined mRNA expression of cyp1a, cyp1b1, and vtg genes in the larvae exposed for 48h to a PAH concentration of 0.50µmol*l-1. Whereas the larvae exposed to each tested PAH displayed many developmental abnormalities (i.e. pericardial and yolk sac edema, dorsal curvature, or tail malformations), no significant upregulation of cyp1a and cyp1b1 mRNA was observed, except for zebrafish exposed to B[a]P. However, significant reduction of vtg mRNA was observed in the larvae exposed to phenanthrene and its 4P- derivative. The results may contribute to the development of a new knowledge about effects of structurally diverse phenanthrene derivatives on vertebrate organisms.
    Źródło:
    Environmental Biotechnology; 2011, 7, 1; 26-33
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    MicroRNA expression profiles in liver and colon of sexually immature gilts after exposure to Fusarium mycotoxins
    Autorzy:
    Brzuzan, P.
    Wozny, M.
    Wolinska-Niziol, L.
    Piasecka, A.
    Florczyk, M.
    Jakimiuk, E.
    Gora, M.
    Luczynski, M.K.
    Gajecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087983.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    To improve our knowledge of the role of microRNAs (miRs) in responses of the porcine digestive system to two Fusarium mycotoxins, zearalenone (ZEN) and deoxynivalenol (DON), we examined the expression of 7 miRs (miR-9, miR-15a, miR-21, miR-34a, miR-122, miR-125b, and miR-192), previously found to be deregulated in diseased liver and colon cells. In this study, immature gilts were exposed to NOEL doses of ZEN (40 |ig/kg/d), DON (12 |ig/kg/d), ZEN+DON (40 + 12 |ig/kg/d), and placebo (negative control group) for 7,14, 21, 28, 35, and 42 days. Before the treatment, expression levels of the selected miRs were measured in the liver, the duodenum, the jejunum, and the ascending and the descending colon of the gilts. Hierarchical clustering of the tissues by their miR expression profiles was consistent with what would be expected based on the anatomical locations and the physiological functions of the organs, suggesting that functions of the miRs are related to the specificities of the tissues in which they are expressed. A subset of 2 pairs of miRs (miR-21+miR-192 and miR-15a+miR-34a), which were assigned to two distinct clusters based on their tissue abundance, was then evaluated in the liver and the ascending and the descending colon during the treatment. The most meaningful results were obtained from the ascending colon, where a significant effect of the treatment was observed, suggesting that during the exposure to mycotoxins, the pathways involved in cell proliferation and survival were disordered. Changes in miR expression in the liver and the descending colon of the treated gilts were smaller, and were associated more with treatment duration than the exposure to ZEN, DON, or ZEN+DON. Further research should focus on identification of genes whose expression is regulated by these aberrantly expressed miRs. This should facilitate understanding of the miRNA-regulated biological effects of mycotoxins.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polski rynek lotniczy transportu towarów FMCG
    Polish air transport market of FMC goods
    Autorzy:
    Szewczyk, L.
    Trajer, M.
    Wolinska, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/793800.pdf
    Data publikacji:
    2016
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Źródło:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Ekonomika i Organizacja Logistyki; 2016, 1[4]
    2450-8055
    Pojawia się w:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Ekonomika i Organizacja Logistyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrence of alcohol addiction in the adult population living in rural areas
    Autorzy:
    Mroczek, B.
    Mrozik, L.
    Kotwas, A.
    Brzezniak, H.
    Wolińska, W.
    Niewczas, M.
    Zabielska, P.
    Grzywacz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081939.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    MAST Test
    AUDIT Test
    alcohol drinking
    HBI
    social activity
    Opis:
    Introduction. Risky alcohol consumption is one of the main threats to the health of both individuals and society as a whole. These threats affect, among others, health, safety and financial situation. Their scale and intensity cause the issue of alcohol consumption to become a significant challenge for public health. Objective. The aim of the study was assessment of the occurrence of the problem of alcohol consumption among residents of rural areas in Western Pomerania and the Lubuskie Province of Western Poland. Materials and method. The study was conducted on 350 residents of rural areas – 236 females (66.4%) and 114 males (32.6%), median age – 42 y. (range – 20–76 years). The tools used included MAST and AUDIT questionnaires, Health Behaviour Inventory (HBI), Social Activity Questionnaire (SA), and original questions. Results. In the studied group the problem with proper alcohol consumption occurred. High convergence was observed between results obtained by individual respondents with both tools (r=0.868 with p<0.001). Median on the AUDIT scale indicated the possibility of alcoholism occurrence in the studied group, whereas the MAST test indicated the necessity to conduct an in-depth alcohol diagnosis. Factors that differentiated the points scored by respondents in AUDIT test included gender – more women drank alcohol in a risky way (Z=-2.54, p=0.011), education, health behaviours, professional passivity, and using various forms of support. In the AUDIT test, the alcoholism threat was over 7 times higher in people without permanent employment (vs. employed people), OR=7.41 (95% CI-4.56–12.04), and in MAST test it was over 4 times higher in these individuals: OR =4.45 (95% CI–2.64–7.49). Conclusions. Results indicate the need to intensify the work of regional facilities for solving alcohol problems, as well as educational campaigns in schools and health care facilities.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 659-664
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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