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    Wyświetlanie 1-22 z 22
    Tytuł:
    Opposite changes of regulatory T cell blood content may differentially contribute to atherosclerosis or lymphoproliferative disorders
    Autorzy:
    Pylaeva, Ekaterina
    Potekhina, Aleksandra
    Pogorelova, Olga
    Tripoten, Maria
    Balakhonova, Tatiana
    Filatova, Anastasia
    Klesareva, Elena
    Afanasieva, Olga
    Noeva, Elena
    Arefieva, Tatiana
    Powiązania:
    https://bibliotekanauki.pl/articles/1064986.pdf
    Data publikacji:
    2016
    Wydawca:
    Medical Education
    Tematy:
    B-cell chronic lymphocytic leukemia
    Opis:
    Background. Chronic autoimmune inflammation in arterial wall may lead to atherosclerosis progression. Objective. The aim of this study was to investigate the association between Treg, Th17 and B1a cell blood frequencies as well as IgM autoantibodies to oxLDL and the abundance of carotid atherosclerosis. Material and methods. 18 patients with increased IMT (intima-media thickness) and 65 patients with different severity of carotid atherosclerotic plaques were included. Treg, Th17 and B1a cell blood frequencies were assessed via direct immunofluorescence staining and flow cytometry, oxLDL as well as IgM autoantibodies to oxLDL were measured with commercial kits. Results. We observed higher values of Treg in patients without carotid atherosclerosis. Patients with intact carotid arteries as compared to patients with mild atherosclerotic plaques had decreased Th1 levels. OxLDL IgM levels were higher in patients with intact carotid arteries. Patients who received statin treatment had higher levels of Treg. Immunophenotyping of B cells revealed two cases of monoclonal B-cell lymphocytosis and 1 case of B-CLL (B-cell chronic lymphocytic leukemia) in elderly patients with intact carotid arteries. Conclusion. We hypothesize that certain parameters of cell immunity may hamper atherosclerosis while protecting from lymphoproliferative disorders.
    Źródło:
    OncoReview; 2016, 6, 1; A29-36
    2450-6125
    Pojawia się w:
    OncoReview
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dependence of immune complexes circulation level on antibody titres to the Lyme pathogenic organism
    Autorzy:
    Jakovleva, V.V.
    Kolchanova, L.P.
    Stepanova, T.F.
    Shonin, A.L.
    Kalgina, G.A.
    Postnikova, T.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/837857.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    immunofluorescence
    titre
    immune complex
    lymphocyte
    Lyme disease
    B cell
    antibody
    Źródło:
    Annals of Parasitology; 1998, 44, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Primary cutaneous B-cell lymphoma located on the face and hard palate
    Autorzy:
    Brzeziński, Piotr
    Chiriac, Anca
    Budurca, Radu
    Chiriac, Anca E.
    Pinteala, Tudor
    Ivan, Luminita
    Foia, Liliana
    Powiązania:
    https://bibliotekanauki.pl/articles/1065379.pdf
    Data publikacji:
    2014
    Wydawca:
    Medical Education
    Tematy:
    B-cell lymphoma
    face and hard palate lymphoma
    non-Hodgkin lymphoma
    Opis:
    Introduction: Primary cutaneous B-cell lymphomas represent primary cutaneous lymphomas. The World Health Organization-European Organization for Research and Treatment of Cancer defines primary cutaneous B-cell limphomas as malignant lymphomas that are confined to the skin at presentation after complete staging procedures. Case report: We report a case of a woman with a cutaneous nodular B-cell lymphoma of the face, with very slow evolution that could easily be misdiagnosed. The patient had two non-ulcerated nodules on the left part of the face. A histological examination on both pieces following surgical excision showed a diffuse infiltrate of atypical B cells. The patient was subsequently directed to the Oncology Department for further investigation, but she died 24 hours afterwards due to one of the acute possible complications of the disease: pulmonary embolism. Conclusion: Cutaneous B-cell lymphoma is an unusual and rare skin neoplasm with a great range of clinical presentations and this is an alarm sign for apparent common skin lesion.
    Źródło:
    OncoReview; 2014, 4, 3; A113-116
    2450-6125
    Pojawia się w:
    OncoReview
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunohistochemical study of expression of immunoglobulins in canine B-cell lymphomas
    Autorzy:
    Sokolowska, J.
    Micun, J.
    Zabielska, K.
    Malicka, E.
    Lechowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/31685.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    immunohistochemistry
    expression
    immunoglobulin
    dog
    B cell
    lymphoma
    tumour
    neoplastic cell
    immunoglobulin light chain
    cancer
    Opis:
    Nineteen canine lymphomas were included in this study. Tumors were classified according to the updated Kiel classification adapted for canine lymphomas by Fournel-Fleury et al. Immunoglobulin light chains (κ and λ) and IgM and IgG expression were determined by immunohistochemical method. In all examined cases neoplastic cells were positive for one of the immunoglobulin light chains. Expression of λ light chains and κ light chains was observed in 18/19 and 1/19 tumors, respectively. In the majority of neoplastic cells in each examined specimen this reaction had a membranous pattern (sκ/sλ). In all examined cases the presence of immunoglobulin light chains was also observed in the cytoplasm of some neoplastic cells (cκ/cλ). These cells were usally rare and never constituted a dominant population. The expression of immunoglobulin was found in 13/19 cases. Most lymphomas were sIgM positive (11/13 cases). In one case expression of IgG was found, and in another lymphoma two populations of neoplastic cells with different expression of examined immunoglobulins (cells with IgM+ and IgG+ phenotypes) were observed. The reaction also had a membranous pattern. The cells containing cytoplasmic immunoglobulins were rare, and in most cases were of the same type as the surface immunoglobulins. Our study has confirmed that canine lymphomas are a monoclonal proliferation of B-cells usually expressing immunoglobulin λ light chains and that the vast majority of tumors deriving from B-cells express IgM. Our study also indicates a possibility of occurence of biclonal lymphomas in canine species.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of life patients treated with rituximab intravenous vs. subcutaneous in B-cell lymphomas: results from outpatient Hematooncology Clinic in Lodz
    Autorzy:
    Witkowska, Magdalena
    Witkowska, Sonia
    Klimczak, Marika
    Frydecka, Anna
    Witkowski, Michał
    Smolewski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2047211.pdf
    Data publikacji:
    2021-07-14
    Wydawca:
    Medical Education
    Tematy:
    Rituximab
    quality of life
    anti CD20
    B-cell NHL
    lymphoma
    Opis:
    Introduction: Nowadays, rituximab is available both as intravenous (IV) and subcutaneous (SC) formulations. The aim of this study is to compare quality of life (QOL) of patients treated in Hematooncology Clinic in Lodz with B-cell nonHodgkin lymphoma (B-NHL) treated with rituximab IV and SC. Material and Methods: In 50 adult patients with B-NHL diagnosis we assessed QOL by three different questionnaries (EORTC QLQ-C30, FACT/ GOG-NTx and EQ-5D). We compared it between patients treated with rituximab IV and SC. Results: In comparison of general condition in EQ-5D-3L and EORTC QLQ-C30 questionnaire patients treated with rituximab SC felt statistically better than with IV administration (p<0.01). In SC group general health was evaluated for 72 while in IV for only 58,1. According to FACT/GOG-NTx questionnaire SC group had significantly better physical well-being. In SC group we observed statistically more complete responses (CR) 21 (88%) versus 17 (65%) in IV group. Moreover, trend was observed in emotional well-being in favor of SC treatment. Discussion: In our study we observed for the first time in the literature statistical difference in frequency of vomiting, nausea, and lack of appetite mentioned from our patients in questionnarie. It is very important that this findings were not published in any other study comparing SC and IV route od administration. Also looking at economic side of SC administration, this type of dosing. As a result it should be preferred form for B-cell lymphoma patients.
    Źródło:
    OncoReview; 2021, 11, 2; 33-39
    2450-6125
    Pojawia się w:
    OncoReview
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diffuse large B cell lymphoma of the oral cavity - case report
    Autorzy:
    Gaweda, A.
    Jach, E.
    Wojciechowicz, J.
    Sokolowska, B.
    Tomaszewski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/3452.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    diffuse large B cell lymphoma
    oral cavity
    palate
    ulceration
    pathological change
    patient
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2014, 08, 1
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    B cells and CD4plus T cells play a key role in resistance to Babesia microti infection in mice
    Autorzy:
    Szymczak, J.
    Donskow-Lysoniewska, K.
    Doligalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/5563.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Babesia microti
    parasitic infection
    babesiosis
    mice
    B cell
    CD4plus T cell
    resistance
    mouse
    Źródło:
    Annals of Parasitology; 2016, 62, Suppl.
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lymphocyte subpopulations and apoptosis of immune cells in rabbits experimentally infected with a strain of the RHD virus having a variable haemagglutination capacity
    Autorzy:
    Niedzwiedzka-Rystwej, P.
    Deptula, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/31022.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lymphocyte subpopulation
    apoptosis
    immune cell
    rabbit
    experimental infection
    RHD virus
    hemagglutination capacity
    granulocyte
    T cell
    B cell
    Opis:
    The paper describes the immunological response in the matter of percentage of T cells (receptor CD5+) and subpopulations (Th with receptor CD4+, Tc/Ts with receptor CD8+, T with receptor CD25+) and B cells with receptor CD19+, as well as the percentage of apoptotic granulocytes and lymphocytes, in rabbits experimentally infected with the Hagenow strain of the RHD virus. The material chosen for the experiment is special, as among all strains of RHD virus, there are only two strains which carry the variable haemagglutination capacity of red cells. The results of the study show that the Hagenow strain gives an untypical picture of T and B lymphocytes, whereas the results in inducing apoptosis seems to corespond with previous data, confirming the inclusion of apoptosis from 4 h p.i. and the intensity of the phenomenon being higher in granulocytes.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Complementary analysis of the initial value problem for a system of o.d.e. modelling the immune system after vaccinations
    Autorzy:
    Foryś, Urszula
    Żołek, Norbert
    Powiązania:
    https://bibliotekanauki.pl/articles/1208222.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    VT-complex
    antibody
    antigen
    B-cell
    plasma cell
    stationary state
    stability
    ordinary differential equations
    lymphocyte
    phase space
    Opis:
    Complementary analysis of a model of the human immune system after a series of vaccinations, proposed in [7] and studied in [6], is presented. It is shown that all coordinates of every solution have at most two extremal values. The theoretical results are compared with experimental data.
    Źródło:
    Applicationes Mathematicae; 2000, 27, 1; 103-111
    1233-7234
    Pojawia się w:
    Applicationes Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of chlorpyrifos on the profile of subpopulations immunocompetent cells B, T and NK in in vivo model
    Autorzy:
    Noworyta-Glowacka, J.
    Beresinska, M.
    Bankowski, R.
    Wiadrowska, B.
    Siennicka, J.
    Ludwicki, J.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/875152.pdf
    Data publikacji:
    2014
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    chlorpyrifos
    pesticide
    human exposure
    immunomodulation
    B cell
    T cell
    natural killer cell
    in vivo model
    immune system
    lymphocyte
    organophosphorus pesticide
    Opis:
    Background. Current studies have indicated many environmental factors, such as pesticides, that cause immune system disorders through inducing changes in humoral and cellular responses thereby increasing the risk of contracting infectious diseases and cancer. The literature suggests that low exposures to certain organophosphorus pesticides stimulate the immune system, whilst high exposures result in decreased function. Precise mechanisms for the fall in immunocompetence are often unclear, however it can be predicted that the intimate interaction between the nervous and immune systems can potentially lead to toxicity. Objectives. To determine the effects of organophosphorus pesticide, chlorpyrifos that is often used in Poland, on selected immunological responses, such as immune-competent cell proportions formed experimentally in-vivo by cells of Wistar rats during subchronic exposures after 45 and 90 days. Materials and Methods. The test was carried out on ten male and ten female Wistar rats in each of three test groups, who received 3 chlorpyrifos doses for 90 days intragastrically, according to OECD guidelines (No. 401). Two control groups were given olive oil. After completion, the animals were deeply anaesthetised by a mixture of ketamine (Vetaketam) and xylazine (Vetaxym). Immuno-competent cells were profiled by a commercial monoclonal antibody method. In order to measure the dynamics of any changes, the aforementioned immunological responses were investigated after 45 days using the same procedures for obtaining the relevant biological test material. Results. Test animals exposed to chlorpyrifos had altered number of white bood cells which were either increased or decreased relative to controls after 45 and 90 days for all exposure levels used. Conclusions. The study demonstrated changes in white-blood cell (lymphocyte) response profiles, reflecting an immunomodulation although such changes were equivocal, where both suppression and stimulation were observed.
    Wprowadzenie. Współczesne badania naukowe wskazują, iż wiele czynników środowiskowych, wliczając w to pestycydy, powoduje zaburzenia układu odpornościowego poprzez indukowanie zmian w odpowiedzi humoralnej i komórkowej, co w efekcie może prowadzić do zwiększonej zapadalności na choroby zakaźne i nowotworowe. Doniesienia literaturowe sugerują, że niskie poziomy narażenia na niektóre pestycydy fosforoorganiczne powodują stymulację układu odpornościowego, zaś wyższe, obniżenie funkcji immunologicznych. W wielu przypadkach nie jest poznany dokładny mechanizm spadku odporności, jednak poprzez związek funkcji neurologicznych i immunologicznych można przewidzieć potencjalne skutki działania toksycznego. Cel. Celem badań było określenie wpływu chloropiryfosu na wybrane parametry odpowiedzi immunologicznej, takie jak skład odsetkowy komórek immunokompetentnych w modelu doświadczalnym in vivo szczurów laboratoryjnych szczepu Wistar, w trakcie ekspozycji subchronicznej 45 i 90 dniowej. Materiał i metody. Badanie wykonano na samcach (10 szt.) i samicach (10 szt.) szczurów rasy Wistar. Zwierzętom z grupy badanej podawano dożołądkowo chloropiryfos przez 90 dni, zgodnie z zaleceniami OECD (Guideline No 401). Grupa kontrolna otrzymywała oliwę z oliwek. Po zakończeniu eksperymentu zwierzęta poddawano głębokiej narkozie przy użyciu mieszaniny: ketaminy (Vetaketam) i ksylazyny (Vetaxym). W celu określenia dynamiki ewentualnych zmian zbadano wyżej wymienione parametry immunologiczne po 45 dniach doświadczenia przy zachowaniu tych samych procedur uzyskania materiału badawczego. Wyniki. Uzyskane wyniki wskazują, że narażanie zwierząt doświadczalnych na chloropiryfos zmieniało skład odsetkowy komórek immunokompetentnych w modelu doświadczalnym in vivo zwiększając albo zmniejszając ich wartość w stosunku do poziomów oznaczonych u grupy zwierząt kontrolnych po 45 i 90 dniowej ekspozycji i na wszystkich poziomach narażania. Wnioski. Odnotowane w wyniku przeprowadzonych badań zmiany w profilu białokrwinkowym świadczące o działaniu immunomodulującym były niejednoznaczne przyjmując formę zarówno immunosupresji jak i immunostymulacji.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2014, 65, 4
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Activation-induced cytidine deaminase (AID): single activity – pleiotrophic effect
    Autorzy:
    Budzko, L.
    Jackowiak, P.
    Figlerowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/79962.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    activation-induced cytidine deaminase
    cytidine deaminase
    pleiotrophic effect
    somatic hypermutation
    B cell
    antigen
    mutagenic potential
    tumourigenesis
    demethylation process
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dual effect of 2-methoxyestradiol on cell cycle events in human osteosarcoma 143B cells.
    Autorzy:
    Gołębiewska, Justyna
    Rozwadowski, Piotr
    Spodnik, Jan
    Knap, Narcyz
    Wakabayashi, Takashi
    Woźniak, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/1043807.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    osteosarcoma 143B cells
    2-methoxyestradiol
    apoptosis
    cell cycle
    Opis:
    We have demonstrated for the first time that the steroid metabolite, 2-methoxyestradiol (2-ME) is a powerful growth inhibitor of human osteosarcoma 143 B cell line by pleiotropic mechanisms involving cell cycle arrest at two different points and apoptosis. The ability of 2-ME to inhibit cell cycle at the respective points has been found concentration dependent. 1 μM 2-ME inhibited cell cycle at G1 phase while 10 μM 2-ME caused G2/M cell cycle arrest. As a natural estrogen metabolite 2-ME is expected to perturb the stability of microtubules (MT) in vivo analogously to Taxol - the MT binding anticancer agent. Contrary to 2-ME, Taxol induced accumulation of osteosarcoma cells in G2/M phase of cell cycle only. The presented data strongly suggest two different mechanisms of cytotoxic action of 2-ME at the level of a single cell.
    Źródło:
    Acta Biochimica Polonica; 2002, 49, 1; 59-65
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metal responsive transcription factor 1 (MTF-1) regulates zinc dependent cellular processes at the molecular level
    Autorzy:
    Grzywacz, Agata
    Gdula-Argasińska, Joanna
    Muszyńska, Bożena
    Tyszka-Czochara, Małgorzata
    Librowski, Tadeusz
    Opoka, Włodzimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1038990.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    metal responsive-transcription factor 1
    cell signaling
    inflammation
    NF-κB
    Opis:
    Metal responsive transcription factor 1 (MTF-1) is a zinc dependent transcription factor which is involved in the regulation of intracellular signaling pathways. MTF-1 regulates the expression of two streams of genes functioning in metal homeostasis and anti-oxidative response. MTF-1 acts in the process of binding of toxic metal ions in the cell, due to the activation of the expression of metallothioneins (MTs). Additionally, MTF-1 regulates transcription of genes involved in the sequestration of zinc and its intracellular transport. Disruption of zinc and MT homeostasis has an indispensable influence on the development of several pathological states. Moreover, by increasing MT activity, MTF-1 can effectively protect cells from oxidative and hypoxic stresses. The mechanism of MTF-1 action in cells includes the regulation of the proper immune response through activation/repression of anti- and pro-inflammatory cytokines. MTF-1 function in immune response is related to nuclear factor-κB (NF-κB) activity. Synthesis of insulin is also related to the activity of this transcription factor and zinc balance. Insulin transport also depends on zinc. In pancreatic β-cells, several types of the zinc transporters are found. Zinc transporters coordinated action is crucial for the synthesis and secretion of insulin. Disturbances in the regulation of signaling pathways connected with MTF-1 function can entail further alterations in zinc intracellular status and this growing imbalance can promote the pathophysiology of degenerative disorders.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 3; 491-498
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental inflammatory bowel disease - role of T cells
    Autorzy:
    Szczepanik, M.
    Gryglewski, A.
    Bryniarski, K.
    Stachura, J.
    Ptak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/70282.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Fizjologiczne
    Tematy:
    myeloperoxidase
    B lymphocyte
    inflammatory bowel disease
    chronic colitis
    colitis
    T cell
    Źródło:
    Journal of Physiology and Pharmacology; 2000, 51, 2
    0867-5910
    Pojawia się w:
    Journal of Physiology and Pharmacology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    αB-crystallin as a promising target in pathological conditions - a review
    Autorzy:
    Maksymiuk, M.
    Sabiborowicz, A.
    Tuzimek, A.
    Deptała, A.
    Czerw, A.
    Badowska-Kozakiewicz, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086060.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    αB-crystallin
    small heat-shock proteins
    breast cancer
    renal cell carcinoma
    Opis:
    Introduction and objective. αB-crystallin belongs to the ubiquitous family of small heat-shock proteins. It was discovered as a physiological protein of the eye lens, maintaining its liquid-like property. Furthermore, αB-crystallin was proved to playa bipolar role in both physiological and pathophysiological conditions. This review discusses current knowledge about the biology and genetics of αB-crystallin, and summarizes recent advances in understanding its role in ophthalmic and neurological disorders, as well as breast cancer, renal cancer and other malignancies. State of knowledge. α-crystallins are established as important elements of the protein quality control network, and consequently their defects are related to multiple human diseases. New studies highlight αB-crystallin’s involvement in proliferative diabetic retinopathy angiogenesis and point out its therapeutic potential in age-related macular degeneration. αB-crystallin is thought to be associated with the disease-causing protein aggregates, leading to its connection with such neurological disturbances as anaplastic astrocytoma, Parkinson disease, aging deficits in the peripheral nervous system and multiple sclerosis. In breast cancer, it was proven to be a marker of aggressive behaviur and cerebral metastases. Strong expression of αB-crystallin promoted growth and migration of clear cell renal cell carcinoma cells and was correlated with lower overall survival rate. Considering other malignancies, its various roles were established in colorectal and gastric cancers, head and neck squamous cell carcinomas and osteosarcomas. Conclusions. Further studies concerning αB-crystallin seem to be enormously promising, as they might improve our understanding of common human pathologies as well as contemporary diagnostics and treatment.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 326-334
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    COMPARISON OF ARTIFICIAL HYDROPHILIC AND LIPOPHILIC MEMBRANES AND HUMAN SKIN TO EVALUATE NIACINAMIDE PENETRATION IN VITRO
    Autorzy:
    Nowak, Anna
    Church, Martin K.
    Duchnik, Wiktoria
    Różewicka-Czabańska, Monika
    Bielecka-Grzela, Stanisława
    Prowans, Piotr
    Pietriczko, Jan
    Czapla, Norbert
    Bargiel, Piotr
    Klimowicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/895721.pdf
    Data publikacji:
    2020-04-29
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    penetration
    Franz diffusion cell
    Niacinamide (Vitamin B3)
    artificial membrane
    human skin
    Opis:
    The evaluation of skin penetration of active substances from topical preparations is a pre-clinical requirement in the pharmaceutical industry. While in vitro preparations of human or animal skin are frequently used the development of artificial lipophilic and hydrophilic membranes with similar properties to human or animal skin need to be developed. This preliminary study compared the in vitro permeation of niacinamide (vitamin B3), which is used as a model drug, across artificial hydrophilic and lipophilic membranes with iv vitro penetration across human skin. The experiments were carried out in Franz diffusion cells. Artificial membranes were filter paper impregnated with either collodium (hydrophilic), stearic acid, cetyl alcohol or cetyl alcohol + cholesterol (lipophilic). Acidic and neutral hydrogel and emulsion (pH 5.4 and 7.4) containing 0.5% of niacinamide were applied to membranes for up to 4 hours. Niacinamide permeated hydrophilic better than lipophilic membranes. There were no significant differences between the cumulated amounts of niacinamide that penetrated artificial lipophilic membranes consisting of, stearic acid, cetyl alcohol and cholesterol as compared with human skin in vitro. Also, hydrogel and emulsion solvents gave similar results. In conclusion, these artificial membranes seem to be a promising alternative to human or animal skin.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 271-279
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methanol electrooxidation with Cu-B catalyst
    Autorzy:
    Włodarczyk, B.
    Włodarczyk, P. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/101113.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    fuel cell
    metanol
    biofuel
    electrooxidation
    Cu-B catalyst
    renewable energy sources
    environment engineering
    Opis:
    In the last few years alternative energy sources have been fast developing. One of these sources is fuel cell. Due to development of the renewable energy sources, the powering of fuel cells with bio-fuels is very important. The one of this fuel is methanol. The use of fuel cells on a large scale is mainly limited by the high cost of catalysts - mainly platinum. Elimination of Pt as catalyst would allow for wider commercial application of fuel cells. The paper presents a study of methanol electrooxidation on electrode with Cu-B alloy catalyst. Researches were done by the method of polarizing curves of electrooxidation of methanol in glass vessel. An aqueous solution of KOH was used as the electrolyte. Conducted measurements show that there is a possibility of electrooxidation of methanol on Cu-B catalyst. In any case, the process of electrooxidation of methanol occurs. A current density of about 10-20 mA/cm2 has been obtained for all concentrations of methanol and B in alloy. So, the work shows possibility to use Cu-B alloys as catalysts for fuel electrode of DMFC.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/2; 1483-1492
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości zastosowania stali nierdzewnej oraz stopu Cu-B jako katalizatora elektrody paliwowej mikrobiologicznego ogniwa paliwowego
    Analysis of the possibility of using stainless steel and copper boride alloy as catalyst for microbial fuel cell fuel electrode
    Autorzy:
    Włodarczyk, P.
    Włodarczyk, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/357623.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Śląska
    Tematy:
    ogniwo paliwowe
    mikrobiologiczne ogniwo paliwowe
    odnawialne źródło energii
    ochrona środowiska
    czyste technologie
    katalizator stalowy
    katalizator Cu-B
    fuel cell
    microbial fuel cell
    renewable energy source
    environment protection
    clean technology
    Cu-B catalyst
    stainless steel catalyst
    Opis:
    Rozwój technologii mikrobiologicznych ogniw paliwowych (MFC – microbial fuel cell), może stanowić przyszłość zarówno wytwarzania energii elektrycznej z substancji odpadowych, jak i technologii oczyszczania ścieków. Ogniwa te charakteryzują się niskimi kosztami inwestycyjnymi. Ze względu na znakomite własności katalityczne, w wysokowydajnych ogniwach paliwowych (np. wodorowo-tlenowych), jako katalizator stosowana jest platyna. Jednak koszt platyny praktycznie uniemożliwia stosowanie jej w MFC. Z tego względu należy poszukiwać innych katalizatorów nie zawierających metali szlachetnych. W mikrobiologicznych ogniwach paliwowych najczęściej stosuje się elektrody grafitowe. Praca przedstawia analizę możliwości wykorzystania stali nierdzewnej oraz stopu Cu-B jako katalizatora elektrody paliwowej w mikrobiologicznych ogniwach paliwowych. Pomiary objęły elektroutlenianie glukozy na katalizatorze stalowym oraz na stopie Cu-B. Stop Cu-B nanoszono elektrolitycznie na nośnik stalowy. Zakres temperatur pomiarów: 293-303K. Pomiary przeprowadzono przy pomocy potencjostatu w reaktorze szklanym. Uzyskiwana gęstość prądu wynosiła 0,17mA/cm2 dla katalizatora stalowego oraz 0,25mA/cm2 w przypadku użycia stopu Cu-B jako katalizatora. Wykazano, że istnieje możliwość wykorzystania stopu Cu-B oraz stali jako katalizatorów mikrobiologicznych ogniw paliwowych. Znalezienie odpowiedniego i taniego katalizatora może przyczynić się do szybkiego rozwoju odnawialnych źródeł energii jakimi są mikrobiologiczne ogniwa paliwowe.
    Considering the increasing standard of living, the energy consumption increases as well, and so does waste production. However, there is a possibility to combine energy production and wastewater treatment. A device that can accomplish this task is a microbial fuel cell (MFC). In MFC's activated sludge bacteria can be used for electricity production during wastewater treatment. In MFC's the organic material is oxidized on anode, and the product of oxidation is CO2 and electrons. One of the problems with MFC’s is a low current density of those energy sources (lower than 1 mA/cm2). Nonetheless, it is possible to increase the current density by using the catalyst for fuel electrode (anode) – as long as a low cost catalyst can be found. The possibility of using stainless steel and Cu-B alloy as catalyst for MFC’s is presented in this paper. Cu-B alloys were obtained by the method of electrochemical deposition on electrode. The increase of current density with stainless steel is approximately 0.17 mA/cm2and with the Cu-B catalyst is approximately 0.25 mA/cm2at the temperature of 293-303K. Use of stainless steel and Cu-B catalyst will increase the efficiency in the use of microorganisms for the production of electricity. This will contribute to the development of high efficiency green energy sources. This action will also allow to increase the environment protection.
    Źródło:
    Archiwum Gospodarki Odpadami i Ochrony Środowiska; 2015, 17, 1; 111-118
    1733-4381
    Pojawia się w:
    Archiwum Gospodarki Odpadami i Ochrony Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    UV-B induced oxidative stress and protective effects of NO under myo-inositol-deficient background in Arabidopsis
    Autorzy:
    Lytvyn, D.
    Bergounioux, C.
    Yemets, A.
    Blume, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/80154.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    ultraviolet-B radiation
    oxidative stress
    protective effect
    nitric oxide
    plant cell
    myo-inositol-1-phosphate synthase
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Invasive pulmonary aspergillosis in a child with acute myeloid leukaemia: pharmacotherapy and surgical management
    Autorzy:
    Styczyński, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/1064789.pdf
    Data publikacji:
    2016
    Wydawca:
    Medical Education
    Tematy:
    amphotericin B lipid form
    chemotherapy
    haematopoietic stem cell transplantation
    invasive fungal disease
    invasive fungal infection
    pulmonary aspergillosis
    Opis:
    This paper reports on diagnostic and therapeutic management of pulmonary invasive fungal disease (IFD) in a child with relapsed acute myeloid leukaemia, undergoing chemotherapy followed by haematopoietic stem cell transplantation. Surgical management with resection of the involved lung tissue was based on the location of fungal infiltrates close to large circulatory vessels. After examination of resected pulmonary tissue, a diagnosis of proven IFD was done. This case report is an example that aspergillosis is usually the cause for pulmonary IFD. Pharmacotherapy of pulmonary IFD should be based on compounds with good penetration to lung tissue: amphotericin B lipid form or voriconazole.
    Źródło:
    OncoReview; 2016, 6, 4; A169-174
    2450-6125
    Pojawia się w:
    OncoReview
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cytogenetic effects of Fusarium mycotoxins on root tip cells of rye [Secale cereale L.], wheat [Triticum aestivum L.] and field bean [Vicia faba L.var.minor]
    Autorzy:
    Packa, D
    Powiązania:
    https://bibliotekanauki.pl/articles/2046676.pdf
    Data publikacji:
    1997
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mycotoxin
    rye
    rot tip
    fumonisin B1
    fumonisin B3
    mitosis
    Triticum aestivum
    fungi
    tip cell
    Fusarium
    chromosome
    wheat
    Secale cereale
    bean
    fumonisin B2
    Vicia faba var.minor
    plant tissue
    metaphase
    moniliformin
    Opis:
    The effects of fusarial toxins: DAS, T-2, DON, 3 Ac-DON, MON and ZEA, on actively dividing root tip cells of rye, wheat and field bean were investigated. Three concentrations: 1, 5 and 10 µg mL⁻¹ were applied for 24 hours. Nuclei and chromosomes were stained using the Feulgens method. It has been found that trichothecene mycotoxins (DAS, T-2, DON, 3 Ac-DON) had a profound effect on mitosis, as they decreased the mitotic index, produced excessive condensation of pro- and metaphase chromosomes, C-metaphascs and C-anaphases, and caused an accumulation of metaphases. The main effect of trichothecene mycotoxins, probably caused via their influence on protein synthesis, was abnormal functioning of the mitotic spindle.
    Źródło:
    Journal of Applied Genetics; 1997, 38, 3; 259-272
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pneumonia in patients after hematopoietic stem cell transplantation
    Autorzy:
    Styczyński, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/1062942.pdf
    Data publikacji:
    2017
    Wydawca:
    Medical Education
    Tematy:
    amphotericin B lipid complex
    chemotherapy
    hematopoietic stem cell transplantation
    invasive fungal disease
    invasive fungal infection
    pneumonia
    pulmonary aspergillosis
    Opis:
    Pneumonia is one of the most frequent cause of death after hematopoietic stem cell transplantation (HSCT). The objective of this review is to present various aspects of pneumonia in this group of patients, with focus on invasive pulmonary aspergillosis and cytomegalovirus disease, being the most frequent etiological causes of pneumonia after HSCT. The review is aimed at practical approach to diagnostic and therapeutic management of pneumonia after HSCT with special attention to: definitions of infections and level of diagnosis of upper and lower respiratory tract infections, including issues specific for invasive fungal disease, pneumocystosis, cytomegalovirus disease, community acquired respiratory viral infections and bacterial pneumonia. Another topics analyzed in the review are: epidemiology and risk factors for development of infection and risk of death due to pneumonia; invasive and non-invasive diagnostics, including imaging and laboratory biomarkers; methods of pharmacological and environmental prophylaxis and specific targeted therapy of pneumonia after HSCT.
    Źródło:
    OncoReview; 2017, 7, 3; 126-138
    2450-6125
    Pojawia się w:
    OncoReview
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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