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    Wyświetlanie 1-4 z 4
    Tytuł:
    Study of Changes in Genetic Diversities and Hepatic Histological Structures of Two Ichthyofauna as a Consequence of Water Pollution in Two Different Areas of West Bengal
    Autorzy:
    Lahiri, Annesha
    Das, Sohini
    Datta, Rahul Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/1193627.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    DNA gel electrophoresis
    Labeo bata
    Labeo rohita
    Water pollution
    fish liver
    histopathology
    ichthyofauna
    physicochemical parameters
    Opis:
    Water pollution affects biodiversity harshly. An attempt was made to find out the effect of aquatic pollution on the tissues of the fish, taking two different types of carps from two different areas of West Bengal (Barrackpore in North 24 Parganas and Raiganj in North Dinajpur). The carps used were Labeo rohita (major carp) and Labeo bata (minor carp) and were sampled from two different ponds within 1 km of each locality. The physicochemical parameters of the respective ponds were estimated from which the fishes were collected and comparisons were made. Liver tissues were taken from the fishes for histological and molecular analysis. From histological studies, it was found that there were some irregularities in the liver tissue structures which might be due to water pollution. DNA isolation from fish liver followed by gel electrophoresis was done to check whether water pollution affect the integrity of the extracted genomic DNA of the fish samples.
    Źródło:
    World Scientific News; 2017, 71; 132-138
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the effects of bleomycin and ionizing radiation in two sublines of murine lymphoma L5178Y
    Autorzy:
    Kruszewski, M.
    Zaim, J.
    Grądzka, I.
    Szumiel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/147561.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bleomycin
    comet assay
    DNA damage
    gamma radiation
    single cell gel electrophoresis
    Opis:
    We compared the effects of bleomycin (BLM) and ionizing radiation on two sublines of murine lymphoma L5178Y (LY): LY-R, radiation resistant and LY-S, radiation sensitive. This radiosensitivity difference is related to the ability to rejoin DNA double strand breaks. LY-S cells were about two times more sensitive to BLM than LY-R, similarly as in the case of sensitivity to X rays. Since there was no difference in the P-glycoprotein-related drug transport system between the sublines, it could be expected that the enhanced sensitivity of LY-S cells to BLM was caused by the DNA repair defect. Growth disturbances in BLM treated cell populations were proportional to the lethal effect and their duration was observed until elimination of dead cells (3-6 days after 50 ěM BLM, 1 h at 37oC). There was no slow growth phase accompanied by normal viability, as previously described for X-irradiated LY-S cells. Initial DNA damage, estimated with the single cell gel electrophoresis method was linearly related to BLM dose in LY-S cells; in LY-R cells - in the low dose range (up to 10 ěM) - there was more damage than in LY-S cells, however, at higher doses the dose - effect curves became identical. The doseeffect relationship for ă rays was linear and identical in both cell sublines. DNA damage distribution in BLM treated cells was much less uniform as compared to that in irradiated cells and indicated the presence of cells with severely damaged DNA, a feature typical for BLM action in vitro.
    Źródło:
    Nukleonika; 2001, 46, 3; 81-86
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    DNA double-strand break rejoining in radioadapted human lymphocytes: evaluation by neutral comet assay and pulse-field gel electrophoresis
    Autorzy:
    Wojewódzka, M.
    Buraczewska, I.
    Szumiel, I.
    Grądzka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/146153.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    human lymphocytes
    radioadaptation
    DNA double-strand break rejoining
    neutral comet assay
    pulsefield gel electrophoresis
    Opis:
    Adaptive response (AR), an enhanced resistance to a high dose of ionising radiation acquired after pretreatment with a very low dose, was estimated in normal human lymphocytes. The question posed was whether the extent of radioadaptation, assessed by micronucleus test, would be related to the rate of DNA double-strand break (DSB) rejoining. Phytohemagglutinin-stimulated G1-lymphocytes from 5 healthy male volunteers were pre-treated (or not) with an adaptive (5 cGy) dose of X-rays, followed by a higher (5 or 10 Gy) challenge dose after 20-22 h. DSB rejoining after the challenge dose was monitored with the use of two methods: neutral comet assay, modified to reduce the contribution of single-strand breaks (SSBs) and thermolabile sites, and pulse-field gel electrophoresis (PFGE), specific for DSBs. At the level of micronuclei, an AR was observed in lymphocytes of 3 of 5 donors. Up to 60 min, comet assay showed no statistically significant differences in DNA break rejoining between adapted and non-adapted lymphocytes, independently of AR appearance. PFGE gave similar results, although in three donors it revealed secondary increases in DSBs levels at 30 min and/or 60 min post-irradiation in the adapted vs. the non-adapted samples. Failure to demonstrate changes in DSBs rejoining rate in the adapted lymphocytes could be due to diversity of AR intensity/timing at the level of DNA repair in not fully homogenous cell populations. Also, “rare” DNA cuts characteristic of early apoptosis/necrosis could overlap the process of DNA break rejoining.
    Źródło:
    Nukleonika; 2006, 51, 4; 185-191
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrophoretic seed albumin patterns in the Vicia sativa L. aggregate
    Autorzy:
    Przybylska, J
    Zimniak-Przybylska, Z.
    Krajewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2043428.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    polyacrylamide gel electrophoresis
    genetic resource
    chromosome number
    Vicia sativa
    variation
    DNA polymorphism
    vetch
    seed albumin
    electrophoresis
    karyotype
    isoenzyme variation
    taxonomy
    Źródło:
    Journal of Applied Genetics; 2000, 41, 3; 139-149
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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