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    Wyświetlanie 1-8 z 8
    Tytuł:
    Recenzja - Eвгений Иванович Колюшин, Выборы и избирателъное право в зеркале судебных решений , Норма Инфра – М, Москва, 2012
    Autorzy:
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/585369.pdf
    Data publikacji:
    2013
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Źródło:
    Studia Wyborcze; 2013, XV; 156-160
    1898-0082
    Pojawia się w:
    Studia Wyborcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Collagen of umbilical cord vein and its alterations in pre-eclampsia.
    Autorzy:
    Romanowicz, Lech
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1043784.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    collagen
    umbilical cord vein
    pre-eclampsia
    Opis:
    The state of the vascular system of the mother and of placenta is known to exert a great influence on intrauterinal development of the fetus. Pre-eclampsia is the most common pathological syndrome connected with pregnancy. Since collagen is one of the main constituents of the vessel wall a comparison was made with collagen content and its molecular polymorphism in umbilical cord veins of newborns from healthy and pre-eclamptic mothers. It was found that umbilical cord veins of newborns from mothers with pre-eclampsia contained 18% less collagen than those of the newborns from normal pregnancies. This decrease was accompanied by a slight decrease of collagen solubility, but all its types (I, III, IV, V and VI) were present. However, the umbilical vein wall of newborns from mothers with pre-eclampsia contained relatively less of type I and more of type III collagen than the normal umbilical cord. These differences may be connected with a disturbance of blood flow in fetus of a woman with pre-eclampsia.
    Źródło:
    Acta Biochimica Polonica; 2002, 49, 2; 451-458
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proteoglycans of human umbilical cord arteries.
    Autorzy:
    Gogiel1, Tomasz
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1044232.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    pregnancy
    umbilical cord
    proteoglycans
    artery
    glycosaminoglycans
    Opis:
    Proteoglycans (PGs) were dissociatively extracted from human umbilical cord arteries (UCAs) with 4 M guanidine hydrochloride containing Triton X-100 and protease inhibitors, purified by Q-Sepharose anion exchange chromatography and lyophilized. They were analysed by gel filtration, SDS/PAGE and agarose gel electrophoresis before and after treatment with chondroitinase ABC. It was found that the PG preparation was especially enriched in chondroitin/dermatan sulphate PGs. The predominant PG fraction included small PGs that emerged from Sepharose CL-2B with Kav = 0.74. Their molecular mass, estimated by SDS/PAGE, was 160-200 kDa and 90-150 kDa, i.e. it was typical for biglycan and decorin, respectively. Treatment with chondroitinase ABC yielded the core proteins of 45 and 47 kDa, characteristic for both small PGs. Remarkable amounts of the 45 kDa protein were detected in non-treated PG samples, suggesting the presence of free core proteins of biglycan and decorin. Large PGs were present in lower amounts. In intact form they were eluted from Sepharose CL-2B with Kav = 0.17 and 0.43. Digestion with chondroitinase ABC yielded the core proteins with a molecular mass within the range of 180-360 kDa but predominant were the bands of 200, 250 and 360 kDa. The large PGs probably represent various forms of versican or perlecan bearing chondroitin sulphate chains.
    Źródło:
    Acta Biochimica Polonica; 2000, 47, 4; 1081-1091
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pre-eclampsia-associated alterations in Whartons jelly proteoglycans.
    Autorzy:
    Gogiel, Tomasz
    Galewska, Zofia
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1041438.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    umbilical cord
    proteoglycans
    Wharton's jelly
    glycosaminoglycans
    pre-eclampsia
    Opis:
    Proteoglycans of Wharton's jelly contain mainly chondroitin/dermatan sulphate chains. The predominant proteoglycan is decorin (core proteins of 45 and 47 kDa), although the core proteins of biglycan (45 kDa), versican (260 kDa) and of other proteoglycans (90, 110, 220 kDa) were also detected (Gogiel et al., 2003). The aim of the present study was to compare the proteoglycan composition of Wharton's jelly of newborns delivered by healthy mothers and those with pre-eclampsia. Proteoglycans from pre-eclamptic Wharton's jelly had a higher sulphated glycosaminoglycan/protein ratio than those of normal tissue. Pre-eclampsia is associated with a lower level of all proteoglycan core proteins, especially those of higher molecular mass (such as versican), although the same set of core proteins were found in normal and pre-eclamptic Wharton's jelly. The alterations in the proteoglycan composition of Wharton's jelly may affect the mechanical properties of the umbilical cord and, in the case of pre-eclampsia, disturb foetal blood circulation.
    Źródło:
    Acta Biochimica Polonica; 2005, 52, 2; 501-507
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrophoretic and chromatographic patterns of glycosaminoglycans of the umbilical cord vessels and their alteration in EPH-gestosis
    Autorzy:
    Romanowicz, Lech
    Bańkowski, Edward
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1044793.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Źródło:
    Acta Biochimica Polonica; 1998, 45, 3; 805-809
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FGF binding by extracellular matrix components of Whartons jelly
    Autorzy:
    Malkowski, Andrzej
    Sobolewski, Krzysztof
    Jaworski, Stefan
    Bankowski, Edward
    Powiązania:
    https://bibliotekanauki.pl/articles/1041086.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    umbilical cord
    fibroblast growth factor
    metalloproteinases
    Opis:
    Our earlier paper has reported that Wharton's jelly is a reservoir of several peptide growth factors, including acidic and basic fibroblast growth factors (aFGF and bFGF, respectively). Both can be extracted by buffered salts solutions in the form of high molecular mass complexes, probably with a component(s) of the extracellular matrix. Both aFGF and bFGF from such extracts hardly penetrate 10% polyacrylamide gels during electrophoresis. Pre-treatment of Wharton's jelly with hyaluronidase slightly increased the extractability of aFGF, but did not affect the extractability of bFGF. In contrast, the pre-treatment of tissue homogenate with bacterial collagenase (2000 U/ml, 37°C, 18 h) increased the extractability of bFGF. The presence of β-mercaptoethanol in the extracting solutions increased the extractability of both FGFs, but did not release FGFs in their free form, despite reducing the molecular mass of the FGF-containing complexes. We conclude that both aFGF and bFGF are bound through disulphide bonds to a protein component of Wharton's jelly. We propose that ground substance composed mainly of collagen fibrils and hyaluronate molecules, which surrounds the cells of Wharton's jelly, prevents the access of the extracting solution to aFGF and bFGF. Although hyaluronate and collagen do not bind aFGF or bFGF directly, they may constitute a barrier which prevents the dispersion of FGFs in Wharton's jelly. Thus, the high concentration of FGFs around the cells of Wharton's jelly may facilitate the interaction of these factors with membrane receptors, thereby resulting in stimulation of cell division and differentiation, as well as of the synthesis of extracellular matrix components.
    Źródło:
    Acta Biochimica Polonica; 2007, 54, 2; 357-363
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Binding of the basic fibroblast growth factor (bFGF) by soluble components of human umbilical cord.
    Autorzy:
    Sobolewski, Krzysztof
    Bańkowski, Edward
    Pałka, Jerzy
    Jaworski, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1043707.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    umbilical cord artery
    fibroblast growth factor
    Wharton's jelly
    pre-eclampsia
    EPH-gestosis
    Opis:
    Pre-eclampsia, the most common pregnancy associated syndrome, is connected with remodelling of extracellular matrix of the umbilical cord tissues. Since the fibroblast growth factor (FGF) is known to be a stimulator of collagen and glycosaminoglycan biosynthesis, one may expect that it plays an important role in such a remodelling. Studies performed on the umbilical cords of 10 control and 10 pre-eclamptic newborns demonstrated that both the umbilical cord arterial wall and Wharton's jelly contain FGF mainly in complexes with the components of different molecular mass. Pre-eclampsia is associated with a decrease of endogenous FGF-binding by soluble high molecular mass components of the umbilical cord. It is suggested that FGF released from these complexes may be actively bound by fibroblasts of the umbilical cord, stimulating them to produce collagen and sulphated glycosaminoglycans.
    Źródło:
    Acta Biochimica Polonica; 2002, 49, 4; 999-1004
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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