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Wyszukujesz frazę "cell adhesion" wg kryterium: Wszystkie pola


Tytuł:
Adhesion, growth and osteogenic differentiation of human bone marrow mesenchymal stem cells on positively and negatively charged and uncharged ferroelectric crystal surfaces
Autorzy:
Vandrovcova, M.
Bacakova, L.
Vanek, P.
Petzelt, J.
Powiązania:
https://bibliotekanauki.pl/articles/285786.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
electroactive ceramics
surface charge
cell number
resazurin
type I collagen
alkaline phosphatase
osteocalcin
bone matrix mineralization
Opis:
The cell-material interaction is significantly influenced by the physicochemical properties of the material surface, including its electrical charge. In this study, the effect of the surface polarity of ferroelectric LiNbO3 single crystals on the adhesion, growth and osteogenic differentiation of human bone marrow mesenchymal stem cells was investigated. The cells were cultured on the normal-to-plane poled and in-plane poled plates resulting in positive, negative and zero surface charge. The number of initially adhering cells on day 1 after seeding, their spreading, shape, and their metabolic activity, production of type I collagen, activity of alkaline phosphatase and mineralization in the following days of cultivation (days 6 and 20) were comparable on all three tested surfaces. However, significant differences were found in the expression of mRNA for type I collagen, alkaline phosphatase and osteocalcin, i.e. an early, medium-term and late arkers of osteogenic cell differentiation, respectively. On day 20, the expression of type I collagen was significantly lower in cells on negatively-charged than on non-charged surfaces. Moreover, the expression of alkaline phosphatase and osteocalcin was higher in cells on positively-charged than on negatively-charged surfaces. These differences were generally more pronounced in standard cell culture medium than in osteogenic medium, which could, at least partly, mask the influence of the material surface properties on the cell behaviour. Thus, positively-charged LiNbO3 surfaces seemed to be more suitable for the osteogenic differentiation of bone marrow mesenchymal stem cells than the negatively-charged surfaces.
Źródło:
Engineering of Biomaterials; 2016, 19, 135; 2-7
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adhesion properties of human bladder cell lines with extracellular matrix components: the role of integrins and glycosylation.
Autorzy:
Lityńska, Anna
Przybyło, Małgorzata
Pocheć, Ewa
Laidler, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1043727.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosylation
integrins
bladder cell lines
adhesion
Opis:
Integrin subunits present on human bladder cells displayed heterogeneous functional specificity in adhesion to extracellular matrix proteins (ECM). The non-malignant cell line (HCV29) showed significantly higher adhesion efficiency to collagen IV, laminin (LN) and fibronectin (FN) than cancer (T24, Hu456) and v-raf transfected (BC3726) cell lines. Specific antibodies to the α2, a5 and β1 integrin subunits inhibited adhesion of the non-malignant cells, indicating these integrin participation in the adhesion to ECM proteins. In contrast, adhesion of cancer cells was not inhibited by specific antibodies to the β1 integrin subunit. Antibodies to α3 integrin increased adhesion of cancer cells to collagen, LN and FN, but also of the HCV29 line with colagen. It seems that α3 subunit plays a major role in modulation of other integrin receptors especially in cancer cells. Differences in adhesion to ECM proteins between the non-malignant and cancer cell lines in response to Gal and Fuc were not evident, except for the v-raf transfected cell line which showed a distinct about 6-fold increased adhesion to LN on addition of both saccharides. N-Acetylneuraminic acid inhibited adhesion of all cell lines to LN and FN irrespective of their malignancy.
Źródło:
Acta Biochimica Polonica; 2002, 49, 3; 643-650
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adhesive properties of carcinoembryonic antigen glycoforms expressed in glycosylation-deficient Chinese hamster ovary cell lines.
Autorzy:
Krop-Watorek, Anna
Klopocki, Arkadiusz
Czerwinski, Marcin
Lisowska, Elwira
Powiązania:
https://bibliotekanauki.pl/articles/1043841.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
solid-phase cell adhesion assay
N-glycoforms
carcinoembryonic antigen
glycosylation defective mutants
Opis:
Carcinoembryonic antigen (CEA) is an oncofoetal cell surface glycoprotein that serves as an important tumour marker for colorectal and some other carcinomas. Its immunoglobulin-like structure places CEA within the immunoglobulin superfamily. CEA functions in several biological roles including homotypic and heterotypic (with other CEA family members) cell adhesion. Cell-cell interaction can be modulated by different factors, e.g., post-translational modifications such as glycosylation. The purpose of this study was to examine whether changes in carbohydrate composition of CEA oligosaccharides can influence homotypic (CEA-CEA) interactions. In order to modulate glycosylation of CEA we used two different glycosylation mutants of Chinese hamster ovary (CHO) cells, Lec2 and Lec8. Lec2 cells should produce CEA with nonsialylated N-glycans, while Lec8 cells should yield more truncated sugar structures than Lec2. Parental CHO (Pro5) cells and the glycosylation deficient mutants were stably transfected with CEA cDNA. All three CEA glycoforms, tested in a solid-phase cell adhesion assay, showed an ability to mediate CEA-dependent cell adhesion, and no qualitative differences in the adhesion between the glycoforms were observed. Thus, it may be assumed that carbohydrates do not play a role in homotypic adhesion, and the interactions between CEA molecules depend solely on the polypeptide structure.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 273-283
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Black Orlon as promising material for bone tissue engineering
Autorzy:
Parizek, M.
Vetrik, M.
Hruby, M.
Lisa, V.
Bacakova, L.
Powiązania:
https://bibliotekanauki.pl/articles/284127.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
Orlon
polyacrylonitrile
tissue engineering
porous 3D scaffolds
cell adhesion
cell growth
osteoblasts
Źródło:
Engineering of Biomaterials; 2014, 17, no. 128-129; 4-6
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cell adhesion molecules and their possible role in the pathology of the peripheral nerves – a review of the literature
Autorzy:
Niezgoda, Adam
Powiązania:
https://bibliotekanauki.pl/articles/552657.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
Tematy:
cell adhesion molecules
demyelination
polyneuropathies.
Źródło:
Family Medicine & Primary Care Review; 2015, 4; 323-326
1734-3402
Pojawia się w:
Family Medicine & Primary Care Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cell adhesion on spin-coated poly(butylene succinate-co-dilinolene succinate) (PBS-DLS) copolyesters
Autorzy:
Kantor-Malujdy, Nina
Sokołowska, Martyna
Sobolewski, Peter
El Fray, Miroslawa
Powiązania:
https://bibliotekanauki.pl/articles/1844798.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Źródło:
Engineering of Biomaterials; 2021, 24, 163; 57
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of the interactions between human high-molecular-mass kininogen and cell wall proteins of pathogenic yeasts Candida tropicalis
Autorzy:
Karkowska-Kuleta, Justyna
Zajac, Dorota
Bras, Grazyna
Bochenska, Oliwia
Seweryn, Karolina
Kedracka-Krok, Sylwia
Jankowska, Urszula
Rapala-Kozik, Maria
Kozik, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1038758.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
contact system
kinins
inflammation
candidiasis
cell wall proteins
adhesion
Opis:
Candida tropicalis is one of the most frequent causes of serious disseminated candidiasis in human patients infected by non-albicans Candida species, but still relatively little is known about its virulence mechanisms. In our current study, the interactions between the cell surface of this species and a multifunctional human protein - high-molecular-mass kininogen (HK), an important component of the plasma contact system involved in the development of the inflammatory state - were characterized at the molecular level. The quick release of biologically active kinins from candidal cell wall-adsorbed HK was presented and the HK-binding ability was assigned to several cell wall-associated proteins. The predicted hyphally regulated cell wall protein (Hyr) and some housekeeping enzymes exposed at the cell surface (known as "moonlighting proteins") were found to be the major HK binders. Accordingly, after purification of selected proteins, the dissociation constants of the complexes of HK with Hyr, enolase, and phosphoglycerate mutase were determined using surface plasmon resonance measurements, yielding the values of 2.20 × 10-7 M, 1.42 × 10-7 M, and 5.81 × 10-7 M, respectively. Therefore, in this work, for the first time, the interactions between C. tropicalis cell wall proteins and HK were characterized in molecular terms. Our findings may be useful for designing more effective prevention and treatment approaches against infections caused by this dangerous fungal pathogen.
Źródło:
Acta Biochimica Polonica; 2016, 63, 3; 427-436
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical modification of poly ε-caprolactone with wollastonite and its influence on biological properties of osteoblast like-cells MG-63
Autorzy:
Ścisłowska-Czarnecka, A.
Menaszek, E.
Kołaczkowska, E.
Błażewicz, M.
Podporska, J.
Powiązania:
https://bibliotekanauki.pl/articles/284898.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
polycaprolactone
wollastonite
osteoblast-like MG-63 cells
cell adhesion
viability
proliferation
alkaline phosphatase
Opis:
PCL (poly-ε-caprolactone) is a biocompatible and biodegradable polymer of aliphatic polyester group. However, PCL does not effectively bind to the bone in contrast to bioactive inorganic compounds such as wollastonite. For this wollastonite (WS) is regarded as a potential bioactive material for bone tissue engeenering although its main drawback is brittlennes. Therefore we synthesized polymer nanocomposite materials composed of poly-ε-caprolactone and wollastonite (PCL/wollastonite) containing either 0.5% or 5% of the latter modifying filler. And we aimed to verify biological properties of the nanocomposite PCL/WS materials, in comparison to the pure PCL, on cultures of osteoblast-like cells MG-63. The study revealed that the adherence of the osteoblast-like cells to the tested materials was enhanced by the PCL modification (PCL/5WS > PCL/0.5WS > PCL) while cell viability/proliferation was not altered. Furthermore, the activity of alkaline phosphatase indicative of osteoblast differentiation (maturation) was enhanced when the cells were cultured with either PCL/5WS or PCL/0.5WS. Overall, our results indicate that PCL-modified wollastonite improves biological properties of the basic biomaterial suggesting its potential usefulness/application for the bone tissue regeneration.
Źródło:
Engineering of Biomaterials; 2011, 14, 102; 11-14
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dexamethasone inhibits U937 cell adhesion via the down-regulation of ROCK1 activity
Autorzy:
Liu, Dong
Chen, Xing
Xiong, Ren
Ning, Ya
Li, Ping
Peng, Yan
Liu, Ping
Zhao, Yan
Yang, Nan
Zhou, Yuan
Powiązania:
https://bibliotekanauki.pl/articles/1039650.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
dexamethasone
ROCK1
fasudil
non-genomic effects
Opis:
Objective. To explore the effect of dexamethasone (DEX) on monocyte adhesion function and its underlying mechanism. Methods. The effects of DEX and fasudil on adhesion of cultured U937 monocytes to human umbilical vein endothelial cells (HUVEC) following stimulation with phorbol myristate acetate (PMA) were studied; Changes in the Rho-associated coiled-coil protein kinase 1 (ROCK1) protein content and activity were evaluated. Results. DEX and fasudil significantly inhibited U937 cell adhesion rates under PMA stimulation and inhibited ROCK1 activity. Mifepristone (RU-486) and cycloheximide (CHX) did not alter these effects of DEX. Conclusions. DEX interferes with the adhesion function of U937 cells through the inhibition of ROCK1 activity.
Źródło:
Acta Biochimica Polonica; 2012, 59, 4; 557-560
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatty acid and phospholipid chlorohydrins cause cell stress and endothelial adhesion
Autorzy:
Dever, Gary
Wainwright, Cherry
Kennedy, Simon
Spickett, Corinne
Powiązania:
https://bibliotekanauki.pl/articles/1041170.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
atherosclerosis
chlorinated fatty acids
ATP depletion
chlorinated phospholipids
leukocyte adhesion
Opis:
The oxidation of low-density lipoprotein (LDL) is thought to contribute to atherogenesis, which is an inflammatory disease involving activation of phagocytic cells. Myeloperoxidase, an enzyme which is able to produce hypochlorous acid (HOCl), is released from these phagocytic cells, and has been found in an active form in atherosclerotic plaques. HOCl can oxidize both the lipid and protein moiety of LDL, and HOCl-modified LDL has been found to be pro-inflammatory, although it is not known which component is responsible for this effect. As HOCl can oxidize lipids to give chlorohydrins, we hypothesized that phospholipid chlorohydrins might have toxic and pro-inflammatory effects. We have formed chlorohydrins from fatty acids (oleic, linoleic and arachidonic acids) and from phospholipids (stearoyl-oleoyl phosphatidylcholine, stearoyl-linoleoyl phosphatidylcholine and stearoyl-arachidonoyl phosphatidylcholine), and investigated various biological effects of these oxidation products. Fatty acid and phospholipid chlorohydrins were found to deplete ATP levels in U937 cells in a concentration-dependent manner, with significant effects observed at concentrations of 25 µM and above. Low concentrations (25 µM) of stearoyl-oleoyl phosphatidylcholine and stearoyl-arachidonoyl phosphatidylcholine chlorohydrins were also found to increase caspase-3 activity. Finally, stearoyl-oleoyl phosphatidylcholine chlorohydrin increased leukocyte adhesion to artery segments isolated from C57Bl/6 mice. These results demonstrate potentially harmful effects of lipid chlorohydrins, and suggest that they may contribute to some of the pro-inflammatory effects that HOCl-modified low density lipoprotein has been found to induce.
Źródło:
Acta Biochimica Polonica; 2006, 53, 4; 761-768
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immobilization of collagen - an effective method of improving cell adhesion on polymeric materials
Autorzy:
Pamuła, E.
Ścisłowska-Czarnecka, A.
Powiązania:
https://bibliotekanauki.pl/articles/284946.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
polimery
polymers
Opis:
Surface properties of poly(L-lactide-co-glycolide) (PLG), and two reference materials: hydrophobic polystyrene (PS) and hydrophilic tissue culture polystyrene (TCPS) were modified by collagen adsorption. The morphology of the obtained collagen film was observed by using atomic force microscopy. On PLG and TCPS collagen layer was uniform, while on PS collagen formed isolated patches. The differences in supramolecular organization of collagen were due to differences in surface wettability. The behaviour of L929 fibroblasts incubated on all raw and collagen-modified surfaces was then evaluated. The best adhesion and spreading of cells, as expected, were observed on TCPS. Collagen adsorbed on PLG and PS considerably improved adhesion and spreading of fibroblasts.
Źródło:
Engineering of Biomaterials; 2007, 10, no. 63-64; 20-23
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved adhesion and growth of osteoblast-like MG-63 cells in cultures on titanium modified by gold particles
Autorzy:
Parizek, M.
Base, T.
Hruby, M.
Lisa, V.
Bacakova, L.
Powiązania:
https://bibliotekanauki.pl/articles/285778.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
metallic materials
titanium
surgical implants
gold microparticles
cell adhesion
cell growth
Opis:
Metallic materials are important for load-bearing bone implants. The osteointegration of these implants can be improved by appropriate surface modifications. Therefore, we present here a study of the cell growth on titanium surfaces modified with films created from gold microparticles. These particles in the form of microplates or polyhedral microcrystals were deposited on titanium plates from ethanol solutions, dried and annealed with a hydrogen flame. Some samples were additionally modified by polyethylene imine. The materials engendered from these modifications were used to investigate the adhesion and growth of human osteoblast-like MG-63 cells on these surfaces in the DMEM medium with 10% of fetal bovine serum. One day after seeding, the highest number of initially adhered cells was found on the surfaces modified by both types of gold microparticles. This trend was the same three and seven days after seeding. The numbers of cells on pure Ti and Ti modified only with gold particles were significantly higher than on samples which were modified with polyethylene imine. The cell spreading areas projected on the materials were significantly larger in cells on the samples with polyethylene imine modification. However, the shape of these cells was mostly rounded or star-like with thin and long protrusions, while on the materials without polyethylene imine, it was mostly polygonal. The cell proliferation activity was estimated from XTT test, based on the activity of mitochondrial enzymes. This test showed that the proliferation activities of osteoblast-like MG-63 cells of the 3rd and 7th days of the experiment were more pronounced on the samples modified only by gold microparticles. Immunofluorescence showed that the focal adhesion plaques containing vinculin and the fibers containing β-actin were most apparent, more numerous and more brightly stained in cells on Ti modified by gold microplates and gold polyhedral microcrystals, especially in comparison with the corresponding samples modified with polyethylene imine (Fig. 1). Thus, it can be concluded that the modification of titanium samples by both types of gold microparticles enhanced the adhesion and growth of MG 63 cells.
Źródło:
Engineering of Biomaterials; 2013, 16, no. 122-123 spec. iss.; 77
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved adhesion and growth of vascular smooth muscle cells in cultures on polyethylene modified by plasma discharge
Autorzy:
Parizek, M.
Kasalkova, N.
Bacakova, L.
Kolarova, K.
Lisa, V.
Svorcik, V.
Powiązania:
https://bibliotekanauki.pl/articles/284295.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
inżynieria tkankowa
Ar plasma discharge
high density and low density polyethylene
cell adhesion
cell proliferation
vascular smooth muscle cells
biomaterials
tissue engineering
Opis:
The attractiveness of synthetic polymers for cell colonization can be affected by physical and chemical modification of the polymer surface. In this study, high density polyethylene (HDPE, m.w. 0.952g/cm3) and low density polyethylene (LDPE, m.w. 0.922g/cm3) were modified by an Ar plasma discharge using Balzers SCD 050 device (exposure time 10, 50, 150 and 400 seconds, discharge power 1.7W). The material was then seeded with rat aortic smooth muscle cells (RASMC; passages 8 to 9, 17 000 cells/cm3) and incubated in a DMEM medium with 10% of fetal calf serum. On day 1 after seeding, the number of initially adhered cells was significantly higher on all modified HDPE and LDPE samples. On day 2, this difference persisted in HDPE, whereas in LDPE only the values on the samples modified by 150 and 400 seconds were significantly higher. On the 5th and 7th day, there were no significant differences in cell number among all LDPE samples. However, on the HDPE foils, significant differences were still apparent on the samples modified for 400 seconds. The cell spreading areas measured on day 1 after seeding were significantly larger on all modified LDPE samples, and, on day 2, on the HDPE samples exposed for 150s. The increased cell colonization was probably due to the formation of oxygen-containing chemical functional groups in the polymer. These results suggest that the responsiveness of the cell to the changes in physiochemical surface properties was more pronounced in HDPE than in LDPE. On both types of polyethylene, the most appropriate exposure time for the enhancement of cell adhesion and growth seemed to be 150 and 400 seconds.
Źródło:
Engineering of Biomaterials; 2007, 10, no. 67-68; 1-4
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of surface topography and morphology of PU/PLA films on fibroblasts performance
Autorzy:
Bednarz, P.
Krok, M.
Laska, J.
Powiązania:
https://bibliotekanauki.pl/articles/285206.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
contact angle
roughness
morphology
cell adhesion
fibroblasts
Źródło:
Engineering of Biomaterials; 2012, 15, no. 116-117 spec. iss.; 120-122
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł

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