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Stranica 1 iz 73 rezultatima
Lectin-binding patterns in normal, hyperplastic and neoplastic endometrium: the prognostic value of concanavalin A.
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Lectins are proteins and glycoproteins of non-immune origin which bind specifically to carbohydrate residues, agglutinate cells and/or precipitate complex carbohydrates. Lectin-binding patterns in normal, hyperplastic and neoplastic endometria were studied using four biotinylated lectins (Con A,
Comprehensive lectin histochemistry of normal and neoplastic human choroid plexus cells: alternation of lectin-binding patterns through neoplastic transformation.
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Lectin histochemistry of the normal and neoplastic human choroid plexus cells [six choroid plexus papillomas (CPPs) and three choroid plexus carcinomas (CPCs)] was performed using eight representative lectins to study the development of sugar chain structures and also to determine whether lectins
Lectin-binding sites in neoplastic and non-neoplastic colonic mucosa of 1,2-dimethylhydrazine-treated rats.
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Qualitative changes of glycoconjugates in luminal surface and goblet cell mucin from colon mucosa of 1,2-dimethylhydrazine (DMH)-treated rats were studied. Eight fluoresceinated lectins were used: Dolichos biflorus (DBA), Glycine max (SBA), Triticum vulgare (WGA), Limax flavus (LFA), Arachis
Regional distribution of glycoconjugates in normal, transitional and neoplastic human colonic mucosa. A histochemical study using lectins.
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Regional distribution of glycoconjugates in normal and neoplastic colonic mucosa was studied by means of eight lectins: Dolichos biflorus (DBA), Glycine max (SBA), Triticum vulgare (WGA), Arachis hypogaea (PNA), Griffonia simplicifolia-I (GS-I), Canavalia ensiformis (Con A), Limax flavus (LFA), and
Lectin binding sites in normal rat ovary and ENU-induced Sertoli cell tumors of the ovaries.
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A panel of seven fluorescein isothiocyanate (FITC) labeled lectins were used to study the distribution of specific binding sites in histologic sections of rat ovaries and ENU-induced Sertoli cell tumors (SCT) of the ovaries. Ten SCT and 5 normal ovaries derived from Berlin Druckey IV (BD-IV) rats
Differences in expression of oligosaccharide determinants by phenotypically distinct sublines of the Dunning 3327 rat prostate cancer.
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Oligosaccharides expressed by the 3327-H and 3327-MAT LyLu sublines of the Dunning rat prostate cancer model have been compared in formalin-fixed and routinely paraffin-embedded tumour tissues. Binding by lectins of defined specificity has been employed to identify expression of seven
Lectin expression in carcinoid tumours of the gastrointestinal tract.
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The binding of peroxidase-conjugated Dolichos biflorus (DBA), Triticum vulgaris (WGA), Canavalia ensiformis (Con A), Arachis hypogaea (PNA), Lotus tetragonolobus, and Bandeiraea simplicifolia I (BSAI) to gastrointestinal carcinoid tumours was studied. The results indicate that carcinoid tumour cells
Lectin immunohistochemistry study of nasal inverted papilloma and associated neoplasms.
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BACKGROUND
We aimed to investigate the tumor biology of nasal IP and identify the biological characteristics associated with early diagnosis and malignant transformation.
METHODS
Lectins immunohistochemistry were performed on inverted papilloma (IP), and associated neoplasms. IP synchronized with
The binding characteristics and utilization of Aleuria aurantia, Lens culinaris and few other lectins in the elucidation of fucosyltransferase activities resembling cloned FT VI and apparently unique to colon cancer cells.
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Human colon carcinoma cell fucosyltransferase (FT) in contrast to the FTs of several human cancer cell lines, utilized GlcNAcbeta1,4GlcNAcbeta-O-Bn as an acceptor, the product being resistant to alpha1,6-L-Fucosidase and its formation being completely inhibited by LacNAc Type 2 acceptors. Further,
Growth inhibitory effect of L-canavanine against MIA PaCa-2 pancreatic cancer cells is not due to conversion to its toxic metabolite canaline.
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L-Canavanine (CAV) is an arginine (ARG) analog isolated from the jack bean, Canavalia ensiformis. CAV becomes incorporated into cellular proteins of MIA PaCa-2 human pancreatic cancer cells and the aberrant, canavanyl proteins are not preferentially degraded. Hydrolytic cleavage of CAV to canaline
A tumour cell aggregation promoting substance from rat ascites hepatoma cells.
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A substance capable of promoting tumour cell aggregation was released from rat ascites hepatoma cell (possibly from the cell surface) kept in Hanks' balanced salt solution (free of calcium and magnesium) in the cold, and then partially purified by chromatography with DEAE-Sephadex and gel filtration
Serum beta-(1----4)-galactosyltransferase activity with synthetic low molecular weight acceptor in human ovarian cancer.
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A modified procedure was developed for the determination of UDP-galactose: 2-acetamido-2-deoxy-glucopyranoside beta-(1----4)-galactosyltransferase (GT) in human serum which employed the synthetic substrates p-nitrophenyl 6-0-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-beta-D-galactopyranoside and
Prognostic significance of reduced expression of beta-N-acetylgalactosaminylated N-linked oligosaccharides in human breast cancer.
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Our previous studies showed that expression of the GalNAcbeta1-->4GlcNAc group on N-linked oligosaccharides is associated with functional differentiation of the bovine mammary gland. In the present study, the occurrence of the GalNAcbeta1-->4GlcNAc group was established in human milk proteins and
Ability of cell-sized beads bearing tumor cell membrane proteins to stimulate LAK cells to secrete interferon-gamma and tumor necrosis factor-alpha.
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We recently reported that lymphokine activated killer (LAK) cells were stimulated to release both interferon-gamma (IFN-gamma) and tumor necrosis factor-alpha (TNF-alpha) when stimulated by a variety of tumor cells. We proposed then that the released cytokines may play a role in mediating tumor cell
Edible Sword Bean Extract Induces Apoptosis in Cancer Cells In Vitro and Inhibits Ascites and Solid Tumor Development In Vivo
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Antitumor potential of edible sword bean (Canavalia gladiata (L.)) extract has been evaluated against Daltons lymphoma ascites (DLA) using in vitro and in vivo studies. Methanolic extraction was carried out and in vitro studies were performed against both DLA and A549, lung cancer cell lines.
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