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Wyszukujesz frazę "genistein" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Homocysteine, heat shock proteins, genistein and vitamins in ischemic stroke - pathogenic and therapeutic implications
Autorzy:
Banecka-Majkutewicz, Zyta
Sawuła, Wojciech
Kadziński, Leszek
Węgrzyn, Alicja
Banecki, Bogdan
Powiązania:
https://bibliotekanauki.pl/articles/1039636.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
heat shock proteins
homocysteine
genistein
ischemic stroke
Opis:
Stroke is one of the most devastating neurological conditions, with an approximate worldwide mortality of 5.5 million annually and loss of 44 million disability-adjusted life-years. The etiology of stroke is often unknown; it has been estimated that the etiology and pathophysiology remains unexplained in more than 40% of stroke cases. The conventional stroke risk factors, including hypertension, diabetes mellitus, smoking, and cardiac diseases, do not fully account for the risk of stroke, and stroke victims, especially young subjects, often do not have any of these factors. It is very likely that inflammation, specific genetic predispositions and traditional risk factors interact with each other and may together increase the risk of stroke. Inflammatory and immune responses play important roles in the course of ischemic stroke. Hyperhomocysteinemia (hcy) is considered a modifiable risk factor for stroke, possibly through an atherogenic and prothrombotic mechanism. Both genetic and environmental factors (e.g., dietary intake of folic acid and B vitamins) affect homocysteine level. Identification of the role of hcy as a modifiable risk factor for stroke and of HSPs as regulators of the immune response may lead to more effective prevention and treatment of stroke through dietary and pharmacological intervention. Dietary modification may also include supplementation with novel preventive compounds, such as the antioxidative isoflavones - genistein or daidzein.
Źródło:
Acta Biochimica Polonica; 2012, 59, 4; 495-499
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthetic derivatives of genistein, their properties and possible applications
Autorzy:
Rusin, Aleksandra
Krawczyk, Zdzisław
Grynkiewicz, Grzegorz
Gogler, Agnieszka
Zawisza-Puchałka, Jadwiga
Szeja, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1040415.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
synthetic genistein derivatives
inhibition of cell proliferation
tyrosine kinases
selective estrogen receptor modulators
anticancer activity
antimicrobial activity
Opis:
Genistein, the principal isoflavone constituent of soybean, attracts much attention as a natural molecule with significant affinity towards targets of potential medicinal interest, but also as a food supplement or prospective chemopreventive agent. Since its physicochemical properties are considered suboptimal for drug development, much effort has been invested in designing its analogs and conjugates in hope to obtain compounds with improved efficacy and selectivity. The aim of this article is to summarize current knowledge about the properties of synthetic genistein derivatives and to discuss possible clinical application of selected novel compounds. Some basic information concerning chemical reactivity of genistein, relevant to the synthesis of its derivatives, is also presented.
Źródło:
Acta Biochimica Polonica; 2010, 57, 1; 23-34
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative study of the effects of genistein, estradiol and raloxifene on the murine skeletal system
Autorzy:
Śliwiński, Leszek
Folwarczna, Joanna
Nowińska, Barbara
Cegieła, Urszula
Pytlik, Maria
Kaczmarczyk-Sedlak, Ilona
Trzeciak, Hanna
Trzeciak, Henryk
Powiązania:
https://bibliotekanauki.pl/articles/1040583.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bone mechanical properties
estradiol
osteoclasts
bone mineralization
osteoblasts
genistein
raloxifene
Opis:
Genistein, a major phytoestrogen of soy, is considered a potential drug for prevention and treatment of postmenopausal osteoporosis. The aim of the present study was to compare the effects of genistein, estradiol and raloxifene on the skeletal system in vivo and in vitro. Genistein (5 mg/kg), estradiol (0.1 mg/kg) or raloxifene hydrochloride (5 mg/kg) were administered daily by a stomach tube to mature ovariectomized Wistar rats for 4 weeks. Bone mass, mineral and calcium content, macrometric parameters and mechanical properties were examined. Also the effects of genistein, estradiol and raloxifene (10-9-10-7 M) on the formation of osteoclasts from neonatal mouse bone marrow cells and the activity of osteoblasts isolated from neonatal mouse calvariae were compared. In vivo, estrogen deficiency resulted in the impairment of bone mineralization and bone mechanical properties. Raloxifene but not estradiol or genistein improved bone mineralization. Estradiol fully normalized the bone mechanical properties, whereas genistein augmented the deleterious effect of estrogen-deficiency on bone strength. In vitro, genistein, estradiol and raloxifene inhibited osteoclast formation from mouse bone marrow cells, decreasing the ratio of RANKL mRNA to osteoprotegerin mRNA expression in osteoblasts. Genistein, but not estradiol or raloxifene, decreased the ratio of alkaline phosphatase mRNA to ectonucleotide pyrophosphatase phosphodiesterase 1 mRNA expression in osteoblasts. This difference may explain the lack of genistein effect on bone mineralization observed in ovariectomized rats in the in vivo study. Concluding, our experiments demonstrated profound differences between the activities of genistein, estradiol and raloxifene towards the osseous tissue in experimental conditions.
Źródło:
Acta Biochimica Polonica; 2009, 56, 2; 261-270
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential effects of various soy isoflavone dietary supplements (nutraceuticals) on bacterial growth and human fibroblast viability
Autorzy:
Pierzynowska, Karolina
Rzeszótko, Agata
Blendowska, Aleksandra
Wieczerzak, Ewa
Rodziewicz-Motowidło, Sylwia
Piotrowska, Ewa
Węgrzyn, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1038411.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
genistein
soy isoflavone extracts
anti-menopausal dietary supplements
bacterial growth
viability of human cells
Opis:
Flavonoids, polyphenolic compounds present in many food products, affect growth of different bacterial species when tested as purified or synthetic substances. They can also influence gene expression in human cells, like fibroblasts. Here, we asked if soy isoflavone extracts, commonly used in many products sold as anti-menopausal dietary supplements, influence bacterial growth similarly to a synthetic isoflavone, genistein. Four commercially available products were tested in amounts corresponding to genistein concentrations causing inhibition of growth of Vibrio harveyi (a model bacterium sensitive to this isoflavone) and Escherichia coli (a model bacterium resistant to genistein). Differential effects of various extracts on V. harveyi and E. coli growth, from stimulation, to no changes, to inhibition, were observed. Moreover, contrary to genistein, the tested extracts caused a decrease (to different extent) in viability of human dermal fibroblasts. These results indicate that effects of various soy isoflavone extracts on bacterial growth and viability of human cells are different, despite similar declared composition of the commercially available products.
Źródło:
Acta Biochimica Polonica; 2018, 65, 2; 325-332
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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