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Wyświetlanie 1-8 z 8
Tytuł:
Immunohistochemical evaluation of hippocampal CA1 region astrocytes in 10 - day - old rats after monosodium glutamate treatment
Autorzy:
Krawczyk, A.
Jaworska-Adamu, J.
Rycerz, K.
Powiązania:
https://bibliotekanauki.pl/articles/30435.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
High concentration of glutamate (Glu) is excitotoxic for nervous system structures. This may lead to glial reactivity ie. increased expression of glial fibrillary acidic protein (GFAP) and S100β protein, and also to hypertrophy and proliferation of cells which are determined by the presence of Ki-67 antigen. The aim of the study was to analyse the immunoreactivity of the GFAP, S100β and Ki-67 proteins in astrocytes of hippocampal CA1 region in young rats after administration of monosodium glutamate (MSG) at two doses: 2 g/kg b.w. (I group) and 4 g/kg b.w. (II group). In rats from I and II group morphologically altered astrocytes with the GFAP expression were observed in the SLM of the hippocampal CA1 region. The cells had eccentrically located nuclei and on the opposite site of the nuclei there were single or double, long and weakly branched processes. Moreover, in the SLM the increase of the number of GFAP and S100β immunopositive astrocytes and nuclei with Ki-67 expression, in contrary to control individuals, was observed. These results suggest the increased expression of the proteins in early reactions or hyperplasia which, together with cell hypertrophy, indicate late reactivity of astroglia in response to glutamate noxious effect.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperfine interactions in Tb0.27-xYxDy0.73Fe2 compounds at 295 K
Autorzy:
Krawczyk, A.
Zwoźniak, A.
Guzdek, P.
Stoch, P.
Zachariasz, P.
Suwalski, J.
Pszczoła, J.
Powiązania:
https://bibliotekanauki.pl/articles/147818.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interaction
intermetallics
Laves phase
Mössbauer effect
Opis:
This paper concerns the synthesis of yttrium-dilute Tb0.27-xYxDy0.73Fe2 intermetallic series with a borderline compound Tb0.27Dy0.73Fe2 known as Terfenol-D by arc melting, XRD analysis and 57Fe Mössbauer effect studies at 295 K. XRD analysis (295 K) shows that all samples crystallize in a cubic, Fd3m, MgCu2-type structure. The lattice parameter increases along with yttrium content. Mössbauer effect spectra for the Tb0.27-xYxDy0.73Fe2 series collected at 295 K consist of two subspectra due to easy direction of magnetization <111>. Hyperfine interaction parameters: isomer shift, magnetic hyperfine field and a quadrupole splitting were obtained from the fitting procedure of the spectra.
Źródło:
Nukleonika; 2013, 58, 1; 133-135
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoreactivity of arcuate nucleus astrocytes in rats after intragastric administration of habanero peppers (Capsicum Chinese Jacq.)
Autorzy:
Rycerz, K.
Krawczyk, A.
Jaworska-Adamu, J.
Golynski, M.
Lutnicki, K.
Balicki, I.
Powiązania:
https://bibliotekanauki.pl/articles/32031.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Habanero pepper fruits contain capsaicin (CAP) characterised by a spicy taste. Astrocytes express vanilloid receptor (TRPV1), which interacts with cannabinoids including CAP. Only a few studies revealed that CAP leads to alterations of the arcuate nucleus (ARC) structures. The aim of this study was to analyse the GFAP (GFAP-IR) and S100β (S100β-IR) immunoreactive astrocytes of ARC in adult rats after intragastric administration of habanero pepper fruits. Adult, Wistar rats received a peanut oil – control group (C) – and oil suspension of habanero pepper fruits at a dose of 0.08 g dm/kg b.w. for 7 days – E1 group – and 28 days – E2 group. After euthanasia, the brains were embedded in paraffin blocks using a routine histological technique. Frontal slices of ARC were immunohistochemically stained for GFAP and S100β using specific antibodies in the peroxidase-antiperoxidase method. Astrocytes of ARC were morphologically and morphometrically analysed under a light microscope. The results of the study did not reveal statistically significant changes in the density of GFAP-IR cells in E1 and E2 groups of rats in comparison with group C. A statistically significant increase in the density of S100β-IR astrocytes was observed in the E1 group and a decrease in the E2 group. Astrocytes with expression of both studied proteins were characterised by morphological alterations in ARC in the E2 group. The obtained results suggest an influence of CAP contained in habanero pepper fruits on the reactivity of astroglia, which may have an impact on the astrocyte-neuron interactions in order to maintain a proper activity of nervous cells in ARC.
Źródło:
Polish Journal of Veterinary Sciences; 2016, 19, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperfine interactions in Dy(Co0.4-xNixFe0.6)2 compounds at 295 K
Autorzy:
Zwoźniak, A.
Krawczyk, A.
Stoch, P.
Guzdek, P.
Zachariasz, P.
Suwalski, J.
Pszczoła, J.
Powiązania:
https://bibliotekanauki.pl/articles/148005.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interaction
intermetallics
Mössbauer effect
Slater-Pauling dependence
Opis:
57Fe Mössbauer effect studies were performed for the cubic C15, Fd3m, MgCu2-type Dy(Co0.4-xNixFe0.6)2 intermetallics. Hyperfine interaction parameters : isomer shift, magnetic hyperfine field and quadrupole interaction parameter were obtained from the fitting procedure of the collected 57Fe Mössbauer effect spectra. As a result of Co/Ni substitution, a Slater-Pauling type curve for the average magnetic hyperfine field vs. Ni content in the Dy(Co0.4-xNixFe0.6)2 series is observed.
Źródło:
Nukleonika; 2013, 58, 1; 179-181
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System informacji o archiwalnych zbiorach kartograficznych dotyczących eksploatacji górniczej na ziemiach polskich
Information system on archive cartographic collections referring to mining in the area of Poland
Autorzy:
Szewczyk, J.
Maciaszek, J.
Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/262502.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
archiwalne mapy górnicze
katalog
system informatyczny MICARIS
metadane
archive mining maps
catalogue
MICARIS
metadata
Opis:
W 2005 r. autorzy rozpoczęli realizację projektu badawczego pt. System informacji o zbiorach archiwalnych dotyczących eksploatacji górniczych na terenach Polski. W artykule przedstawiono założenia projektu mającego na celu skatalogowanie w jednolitym układzie rozproszonych w różnych jednostkach i zbiorach prywatnych map górniczych z obecnego obszaru Polski. Przedstawiono koncepcję systemu MICARIS (Mine Cartography Information System), opartego na bazie metadanych i dostępnego w Internecie. System ma umożliwić także wykonywanie prostych analiz przestrzennych. Omówiono przewidywane efekty projektu oraz stan zaawansowania prac.
In 2005 the authors started the research project Information System on Archive Cartographic Collections Referring to Mining in the Area of Poland. In the article the principles of the project are presented. The objective of the project is to make a catalogue and put in a uniform system mining maps from the area of contemporary Poland. So far the maps have been dispersed into different units and private collections. The concept of the system MICARIS (Mine Cartography Information System) was presented. The system was based on the metadata base and available in the Internet. The system should enable to carry out simple spatial analyses. Predicted effects of the project were discussed as well as the state of the progress of work.
Źródło:
Geodezja / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2006, 12, 2/1; 419-430
1234-6608
Pojawia się w:
Geodezja / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoreactivity of acetylcholinesterase and M1 muscarinic receptors in the hippocampus and striatum of rats treated with Rebaudioside A
Autorzy:
Rycerz, K.
Jaworska-Adamu, J.
Krawczyk, A.
Arciszewski, M.B.
Powiązania:
https://bibliotekanauki.pl/articles/16539186.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
rebaudioside A
stevia
acetylcholinesterase
hippocampus
striatum
rat
Opis:
Rebaudioside A (RebA) is a steviol glycoside used for production of sweeteners. It was shown that the glycosides affect memory and learning processes. The aim of the study was to investigate neurons immunoreactive for acetylcholinesterase (AChE) and M1 muscarinic receptors (mAChRs-M1) of the hippocampal CA1 and CA3 fields and striatal caudateputamen (CP) and globus pallidus (GP) in rats receiving RebA. RebA was administrated to adult rats for 45 days in dilutions of 1 mg and 2 mg RebA/ml water. Indirect peroxidase-antiperoxidase immunohistochemical reaction was conducted on frontal sections containing the hippocampus and striatum with use of antibodies against AChE and mAChRs-M1. Immunoreactive for the studied proteins neurons were morphologically and morphometrically assessed in hippocampal CA1 and CA3 fields and in CP and GP. Microscopic observations did not reveal significant changes in morphology of immunoreactive neurons, which suggests no neurotoxic effect of the studied glycoside on these cells. Morphometric analyses revealed an increase in the density of AChE and mAChRs-M1 immunoreactive neurons. A decrease in reaction intensity of AChE-positive neurons was also demonstrated in the hippocampal CA1 field and in GP. In contrast, an increase in reaction intensity of mAChRs-M1-positive neurons was found in CA1, CA3 fields and in CP and GP. The results of our preliminary studies indicate that RebA administrated to rats has an impact on cholinergic neurons in the studied area. The results suggest a possible increase in the activity of the cholinergic system, responsible for memory and learning processes, after administration of RebA.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 303-310
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of SARS-CoV-2 infection on out-ofhospital cardiac arrest outcomes - systematic review and meta-analysis
Autorzy:
Krawczyk, A.
Szarpak, L.
Bragazzi, N.L.
Cander, B.
Feduniw, S.
Pruc, M.
Luszczki, J.
Chmielewski, J.
Kowalczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/28762637.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 369-375
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoreactivity for calretininin interneurons of the hippocampal CA1 field and dentate gyrus in adult rats after administration of habanero peppers (Capsicum chinense Jacq.)
Autorzy:
Jaworska-Adamu, J.
Krawczyk, A.
Rycerz, K.
Gołyński, M.
Wawrzyniak, A.
Lutnicki, K.
Balicki, I.
Powiązania:
https://bibliotekanauki.pl/articles/2087682.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
capsaicin
interneurons
calretinin
hippocampus
rats
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 3; 469-474
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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