glycine max trypsin inhibitor/neoplasms

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Inhibitory effects of soybean trypsin inhibitor on induction of pancreatic neoplastic lesions in hamsters by N-nitrosobis(2-oxopropyl)amine.

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The effects of simultaneous soybean trypsin inhibitor (SBTI) treatment on initiation of pancreatic carcinogenesis by N-nitrosobis(2-oxopropyl)amine (BOP) were investigated. Female Syrian golden hamsters were given five weekly s.c. injections of BOP at a dose of 10 mg/kg while being administered a

Proceedings: Autoradiography of Ehrlich ascites tumours treated with soybean trypsin inhibitor in vivo.

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Enhanced vascular permeability in solid tumor involving peroxynitrite and matrix metalloproteinases.

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Peroxynitrite (ONOO(-)), which is generated from nitric oxide (NO) and superoxide anion (O(2)(.-)) under pathological conditions, plays an important role in pathophysiological processes. Activation of matrix metalloproteinases (MMPs) contributes to tumor angiogenesis and metastasis. NO mediates the

Inhibitory effect of topical applications of nondenatured soymilk on the formation and growth of UVB-induced skin tumors.

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Treatment of female SKH-1 hairless mice with ultraviolet B light twice a week for 20 weeks resulted in a population of tumor-free mice with a high risk of developing skin tumors during the next several months in the absence of additional UVB treatment (high-risk mice). Topical applications of

Effects of anti-promoters and strain of mouse on tumor promoter-induced oxidants in murine epidermal cells.

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The induction of oxidant production in mouse epidermal cells by the tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) can be suppressed by many, but not all, known inhibitors of mouse skin tumor promotion. Members of the anti-oxidant category that were tested were ranked in the following

Pancreatic secretory trypsin inhibitor causes autocrine-mediated migration and invasion in bladder cancer and phosphorylates the EGF receptor, Akt2 and Akt3, and ERK1 and ERK2.

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Pancreatic secretory trypsin inhibitor (PSTI) is expressed in most bladder carcinomas, where its pathophysiological relevance is unclear. Using recombinant normal sequence PSTI/tumor-associated trypsin inhibitor (TATI), a variant associated with familial pancreatitis (N34S), an active

Rapid killing of actinomycin D-treated tumor cells by human monocytes. II. Cytotoxicity is independent of secretion of reactive oxygen intermediates and is suppressed by protease inhibitors.

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Pretreatment with Actinomycin D (ActD, 1 microgram/ml for 3 hr) rendered WEHI 164 tumor cells susceptible to killing by human monocytes in a 6-hr 51Cr release assay. The present study was designed to elucidate the role of reactive oxygen intermediates (ROI) and of proteolytic enzymes in this

Comparison of cell attachment and caseinolytic activities of five tumour cell types.

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We have examined the ability of 5 tumour cell types to attach to plastic flasks in medium containing either 10% foetal calf serum or 10% normal human serum and compared this ability with cell-associated caseinolytic activity. The cell types used included fibrosarcoma cells which were obtained from a

Marginal zinc status does not exacerbate pancreatic carcinogenesis associated with dietary soybean trypsin inhibitor concentrate in rats.

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Although the etiology of pancreatic cancer is largely unknown, diet-associated factors may play a role. Male Sprague-Dawley rats (14 d of age) were given a single injection of either saline or azaserine and were weaned (21 d) to diets with either adequate (30 micrograms/g) or low (9 micrograms/g)

The effects of soybean trypsin inhibitors on the pancreas of animals and man: a review.

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Human trypsin is more resistant to inhibition than is the trypsin of other mammalian species. The effect on human trypsin of soybean trypsin inhibition in soy protein does not appear to be a potential hazard to man. Therefore, the elimination of STI does not seem to be necessary for humans. In

Degradation of intact basement membranes by human and murine tumor enzymes.

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Homogenates from malignant tumors, obtained from surgery specimens or from transplants of Walker 256 carcinosarcoma in rats, contained an enzyme activity capable of degrading intact 3H-acetylated basement membranes from bovine lens. The enzyme activity from murine tumor was purified about 7500-fold

Characterization of tumor cell membrane serine proteases by polyacrylamide gel electrophoresis.

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Studies in our laboratory have indicated that tumor cell membrane-bound proteases are responsible for the ability of tumor cells to lyse normal cells in vitro. In order to evaluate the tumor cell membrane enzymes, a purified tumor cell membrane preparation was prepared and the nonionic detergent

Properties of Ca2+-activated protease specific for the intermediate-sized filament protein vimentin in Ehrlich-ascites-tumour cells.

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A Ca2+-activated neutral protease is described which, when tested against various native proteins, appears to be specific for vimentin, the 58,000-Mr subunit protein of intermediate-sized (7--11 nm) filaments in Ehrlich-ascites-tumour cells. The protein subunits of other classes of

Involvement of a serine protease, but not of neutrophil elastase, in tumor necrosis factor-induced lethal hepatitis and induction of platelet-activating factor.

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OBJECTIVE Tumor necrosis factor (TNF) plays an essential role in several types of acute and chronic hepatitis. Our aims in the present study were to elucidate the mechanism by which TNF leads to acute lethal hepatitis, thereby focusing on the role of serine proteases and platelet-activating factor

Inducible macrophage cytotoxins. II. Tumor lysis mechanism involving target cell-binding proteases.

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Thioglycollate-elicited C57BL/6 peritoneal exudate macrophage monolayers (PEMM) stimulated with poly I . poly C or LPS released a macrophage cytotoxin (MCT) that rapidly bound to syngeneic (EL 4) or allogeneic (NS-1, YAC-1) tumor cells but did not bind to normal splenocytes. No binding to human

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