carcinogenesis/prolīns

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Proline dithiocarbamate inhibits N-nitrosodiethylamine induced liver carcinogenesis.

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Ielogoties Reģistrēties

A study was conducted to determine the toxicity of different dithiocarbamates and of disulfiram. In an experiment showing the cytotoxicity against murine spleen lymphocytes, proline dithiocarbamate (PDTC) and thioproline dithiocarbamate showed the lowest toxicity. Therefore one of them was selected

Inhibitory effect of a mixture containing vitamin C, lysine, proline, epigallocatechin gallate, zinc and alpha-1-antitrypsin on lung carcinogenesis induced by benzo(a) pyrene in mice.

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BACKGROUND This study was aimed to evaluate protective and therapeutic effects of a specific mixture, containing vitamin C, lysine, proline, epigallocatechin gallate and zinc, as well as alpha-1-antitrypsin protein on lung tumorigenesis induced by benzo(a) pyrene [B(a)P] in mice. METHODS Swiss

Expression of proline-rich Akt-substrate PRAS40 in cell survival pathway and carcinogenesis.

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OBJECTIVE To study the expression of proline-rich Akt-substrate PRAS40 in the cell survival pathway and tumor progression. METHODS The effects of three key kinase inhibitors on PRAS40 activity in the cell survival pathway, serum withdrawal, H(2)O(2) and overexpression of Akt were tested. The

[Arginine as a crucial amino acid in carcinogenesis and tumor growth].

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Arginine, a cationic semi-essential amino acid, is involved in numerous pathways of human metabolism. It serves as a precursor for the biosynthesis of proteins and also of ornithine, polyamines, nitric oxide, proline, glutamate, glutamine, creatine, agmatine and dimethylarginines. Arginine is

Ascorbate depletion: a critical step in nickel carcinogenesis?

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Nickel compounds are known to cause respiratory cancer in humans and induce tumors in experimental animals. The underlying molecular mechanisms may involve genotoxic effects; however, the data from different research groups are not easy to reconcile. Here, we challenge the common premise that direct

Arginine and proline alleles of the p53 gene are associated with different locations of gastric cancer.

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OBJECTIVE Abnormal function of gene p53 is associated with the formation of various cancers including gastric cancer. Recently, p53 codon 72 polymorphism was extensively studied to determine the risk factors responsible for cancer formation using the concept of single nucleotide polymorphism. In

Prevention of formation of important mutagens/carcinogens in the human food chain.

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Etiological factors for gastric cancer, among others, involve consumption of smoked, salted, and pickled fish of certain types. Their chemical nature is not yet fully established but probably involves diazo phenols, and their formation can be prevented either by omitting the salting and pickling

Proline-rich acidic protein 1 (PRAP1) is a novel interacting partner of MAD1 and has a suppressive role in mitotic checkpoint signalling in hepatocellular carcinoma.

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Loss of mitotic checkpoint of cells contributes to chromosomal instability and leads to carcinogenesis. Mitotic arrest deficient 1 (MAD1) is a key component in mitotic checkpoint signalling. In this study, we identified a novel MAD1 interacting partner, proline-rich acidic protein 1 (PRAP1), using

Association of protein kinase FA/GSK-3alpha (a proline-directed kinase and a regulator of protooncogenes) with human cervical carcinoma dedifferentiation/progression.

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Computer analysis of protein phosphorylation-sites sequence revealed that most transcriptional factors and viral oncoproteins are prime targets for regulation of proline-directed protein phosphorylation, suggesting an association of proline-directed protein kinase (PDPK) family with neoplastic

Prognostic significance of the proline form of p53 codon 72 polymorphism in nasopharyngeal carcinoma.

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OBJECTIVE An important tumor suppressor gene, p53, plays a role in the regulation of cell progression and prevention of carcinogenesis. Mutated p53 is related to cell progression and malignancy. We aimed to evaluate the association between nasopharyngeal carcinoma and p53 polymorphism. METHODS Case

Nutritional toxicology: on the mechanisms of inhibition of formation of potent carcinogens during cooking.

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Frying or broiling of meat or fish yields powerful genotoxic carcinogens such as 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) and related amino-imidazo azaarene carcinogens. We have explored the mode of formation and inhibition of production of these carcinogens. Maillard reactions from precursor

A novel prodrug of 4'-geranyloxy-ferulic acid suppresses colitis-related colon carcinogenesis in mice.

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The inhibitory effects of a novel prodrug, 3-(4'-geranyloxy-3'-methoxyphenyl)-2-trans-propenoyl-L-alanyl-L-proline (GAP), of the secondary metabolite 4'-geranyloxy-3'-methoxyphenyl)-2-trans-propenoic acid (4'-geranyloxy-ferulic acid), on colon carcinogenesis was investigated using an azoxymetahen

Differential growth sensitivity to 4-cis-hydroxy-L-proline of transformed rodent cell lines.

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The effect of 4-cis-hydroxy-L-proline (CHP), a proline analogue, on the anchorage-dependent and -independent growth of several transformed rodent cell lines was studied. Mouse NIH-3T3 fibroblasts transformed by a variety of different oncogenes (Ki-ras, mos, src, fms, fes, met, and trk) by a DNA

Effect of ascorbic acid dose taken with a meal on nitrosoproline excretion in subjects ingesting nitrate and proline.

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We determined the dose of ascorbic acid (ASC) given to subjects with a standard 400-calorie meal that inhibited N-nitrosoproline (NPRO) formation when we gave 400 mg of nitrate one hour before and 500 mg of L-proline with the standard meal. Volunteers consumed their normal US diets but restricted

Glycine- and proline-rich glycoprotein regulates the balance between cell proliferation and apoptosis for ACF formation in 1,2-dimethylhydrazine-treated A/J mice.

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Ielogoties Reģistrēties

The objective of this study was to investigate the chemopreventive potentials of glycine- and proline-rich glycoprotein (SNL glycoprotein, 150-kDa) isolated from Solanum nigrum Linne on formation of colonic aberrant crypt foci (ACF) induced by 1,2-dimethylhydrazine (DMH, 20 mg/kg) in A/J mice.

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