Diss. (sammanfattning) Stockholm : Karol. inst., 2002. / Härtill 5 uppsatser.

Diss. (sammanfattning) Stockholm : Karolinska institutet, 2002. / Härtill 5 uppsatser.

Diss. (sammanfattning) Stockholm : Karol. inst., 2004. / Härtill 4 uppsatser.

Diss. (sammanfattning) Stockholm : Karol. inst., 2003. / Härtill 4 uppsatser.

Diss. (sammanfattning) Stockholm : Karol. inst., 2003. / Härtill 6 uppsatser.

Thesis (Ph. D.)--Cornell University, May, 2008. / Vita. Includes bibliographical references (leaves 115-128).

Colonic epithelial glycoproteins were histochemically studied in rats during the induction of colorectal cancer with 1,2,-dimethylhydrazine-diHCl (DMH). 310 male Wistar rats were separated into 3 groups: 10 control rats were sacrificed without treatment, 150 rats were given weekly subcutaneous injections of the carcinogen and 150 rats were given sham Injections on the same schedule. Groups of rats (10 control and 10 treated) were sacrificed at various time intervals in an effort to obtain a large number of pre-neoplastic rat colons to be used to determine whether histochemical changes could be detected prior to morphologic change. Three histochemically distinct regions in the Wistar rat distal colon have been described using recently developed techniques. Two major histochemical changes have been shown to occur prior to malignancy. Change 'A' represented a decrease or loss of sulphate from the glycoproteins; this was the earliest and predominant change and has been shown to occur prior to any identifiable morphologic change. Change 'B' represented a decrease or loss of sulphate occurring in the same cells as a decrease or loss of side chain 0-acetylation of sialic acid residues; this change occured later and to a lesser extent than change 'A'. The data suggests that histochemical change may be a premalignant marker, however, further investigations are necessary to firmly establish this conclusion. / Medicine, Faculty of / Pathology and Laboratory Medicine, Department of / Graduate

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No description available.

Choi Pui-yu. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (leaves 113-123). / Abstracts in English and Chinese. / Abstract --- p.i / Abstract (Chinese Version) --- p.iii / Acknowledgements --- p.v / List of Abbreviations --- p.vi / Table of Contents --- p.viii / List of Tables --- p.xii / List of Figures --- p.xiii / Chapter Chapter 1 --- Introduction --- p.1 / Chapter Chapter 2 --- Literature Review / Chapter 2.1 --- Mushroom Polysaccharides with Antitumor Activities --- p.7 / Chapter 2.1.1 --- Antitumor β-Glucans --- p.7 / Chapter 2.1.2 --- Antitumor Heteroglycans --- p.9 / Chapter 2.1.3 --- Antitumor Polysaccharide-Protein Complexes --- p.12 / Chapter 2.2 --- Antitumor Activities and Structural Characteristics of Mushroom Polysaccharides --- p.15 / Chapter 2.3 --- Antitumor Effects of Mushroom Polysaccharides In Vitro --- p.19 / Chapter 2.4 --- Antitumor Effects of Mushroom Polysaccharides In Vivo --- p.21 / Chapter 2.5 --- Immunomodulatory Activities --- p.24 / Chapter 2.6 --- Activation of Cytokines by Mushroom Polysaccharides --- p.28 / Chapter 2.7 --- Induction of Nitric Oxide Synthase by Mushroom Polysaccharides --- p.32 / Chapter 2.8 --- Tremella aurantialba --- p.34 / Chapter Chapter 3 --- Materials and Methods --- p.35 / Chapter 3.1 --- Extraction --- p.35 / Chapter 3.1.1 --- Extraction of Crude Tremella aurantialba Polysaccharide --- p.35 / Chapter 3.1.2 --- Fractionation --- p.38 / Chapter 3.1.3 --- Polysaccharide and Protein Content Determination --- p.38 / Chapter 3.1.3.1 --- Phenol-Sulfuric Assay --- p.39 / Chapter 3.1.3.2 --- Lowry-Folin Method --- p.39 / Chapter 3.1.4 --- Gas Chromatography (GC) --- p.40 / Chapter 3.1.5 --- Modified Carbazole Assay --- p.41 / Chapter 3.1.6 --- High Performance Liquid Chromatography (HPLC) --- p.42 / Chapter 3.2 --- In Vitro Studies --- p.43 / Chapter 3.2.1 --- Maintenance of Cell Lines --- p.43 / Chapter 3.2.2 --- Effect on Cancer Cell Lines --- p.43 / Chapter 3.2.2.1 --- Trypan Blue Exclusion Methods --- p.44 / Chapter 3.2.2.2 --- MTT Assay --- p.44 / Chapter 3.2.3 --- Effect on Normal Cell Line --- p.45 / Chapter 3.2.4 --- Coulter Counter --- p.46 / Chapter 3.3 --- In Vivo Studies --- p.47 / Chapter 3.3.1 --- Animals --- p.47 / Chapter 3.3.2 --- Maintenance of Sarcoma 180 Cell Line --- p.47 / Chapter 3.3.3 --- Effect of TAP Fractions on Sarcoma 18 Solid Tumor --- p.48 / Chapter 3.3.3.1 --- Injection of TAP Fractions 24 h After Transplantation --- p.48 / Chapter 3.3.3.2 --- Injection of TAP Fractions 72 h After Transplantation --- p.49 / Chapter 3.4 --- Effect of TAP Fractions on Modulating mRNA Expression of Cytokines and Nitric Oxide Synthase --- p.51 / Chapter 3.4.1 --- Treatment of Mice --- p.51 / Chapter 3.4.2 --- Isolation of Splenocytes and Peritoneal Exduate Cells --- p.51 / Chapter 3.4.3 --- Extraction of Total mRNA from Splenocyte and Peritoneal Exduate Cells --- p.52 / Chapter 3.4.4 --- Reverse Transcription-Polymerase Chain Reaction (RT-PCR) --- p.53 / Chapter 3.4.4.1 --- Reverse Transcription --- p.53 / Chapter 3.4.4.2 --- Polymerase Chain Reaction --- p.56 / Chapter 3.4.5 --- DNA Sequencing --- p.57 / Chapter 3.5 --- Statistical Analysis --- p.58 / Chapter Chapter 4 --- Results --- p.59 / Chapter 4.1 --- Isolation and Characterization of TAP Fractions --- p.59 / Chapter 4.1.1 --- Percentage Yield of TAP Fractions --- p.59 / Chapter 4.1.2 --- Polysaccharide and Protein Content of TAP Fractions --- p.59 / Chapter 4.1.3 --- Relative Monosaccharide Contents in TAP Fractions --- p.60 / Chapter 4.1.4 --- Results of HPLC --- p.60 / Chapter 4.2 --- Effects of TAP Fractions In Vitro --- p.69 / Chapter 4.2.1 --- Effects of TAP Fractions on Suspension Cancer Cell Lines --- p.69 / Chapter 4.2.2 --- Effects of TAP Fractions on Adhesion Cancer Cell Lines --- p.69 / Chapter 4.2.3 --- Effects of TAP Fractions on Normal Cell Line --- p.70 / Chapter 4.2.4 --- Effect of TAP 2 on HL-60 Cell Line as Evaluated by Coulter Counter --- p.70 / Chapter 4.3 --- Antitumor Effect of TAP Fractions In Vivo --- p.78 / Chapter 4.4 --- Effect of TAP Fractions on Modulating mRNA Expressions of Cytokines and Nitric Oxide Sythase (NOS) --- p.83 / Chapter 4.4.1 --- Results of RT-PCR --- p.83 / Chapter 4.4.2 --- Sequencing --- p.84 / Chapter Chapter 5 --- Discussion --- p.91 / Chapter 5.1 --- Characterization of TAP Fractions --- p.91 / Chapter 5.2 --- Antitumor Effects of TAP Fractions In Vitro --- p.96 / Chapter 5.3 --- Furhter Study --- p.109 / Chapter Chapter 6 --- Conclusion --- p.111 / References --- p.113