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Puslapis 1 nuo 24 rezultatus
Plasma N-acetylputrescine, cadaverine and 1,3-diaminopropane: potential biomarkers of lung cancer used to evaluate the efficacy of anticancer drugs.
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Polyamines have been widely investigated as potential biomarkers for various types of cancers, including lung cancer, which is one of the most common causes of death from cancer worldwide. This study was carried out to evaluate the value of polyamines that serve as early diagnostic and cancer
Differential effect of alpha-difluoromethylornithine on the in vivo uptake of 14C-labeled polyamines and methylglyoxal bis(guanylhydrazone) by a rat prostate-derived tumor.
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The uptake of exogenously administered radiolabeled polyamines by a rat prostate-derived tumor line, the Dunning R3327 MAT-Lu, and various normal tissues was studied. Pretreatment of tumor cells in vitro with alpha-difluoromethylornithine (DFMO), a polyamine synthesis inhibitor, resulted in a
Navy Beans Impact the Stool Metabolome and Metabolic Pathways for Colon Health in Cancer Survivors.
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Colorectal cancer (CRC) is the third leading cause of cancer-related death in the United States and emerging evidence supports that increased consumption of legumes, such as navy beans, can reduce risk. Navy bean consumption was previously shown to modulate host and microbiome metabolism, and this
Polyamines as biomarkers of cervical intraepithelial neoplasia.
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Polyamines (putrescine, spermidine and spermine) play critical roles in cell growth and transformation. Ornithine decarboxylase (ODC), key enzyme in polyamine biosynthesis, is considered a putative protooncogene crucial to the regulation of cell growth and transformation. Cancer patients have
Omega-3 PUFA ethanolamides DHEA and EPEA induce autophagy through PPARγ activation in MCF-7 breast cancer cells.
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The omega-3 long chain polyunsaturated fatty acids, docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA), elicit anti-proliferative effects in cancer cell lines and in animal models. Dietary DHA and EPA can be converted to their ethanolamide derivatives, docosahexaenoyl ethanolamine (DHEA),
Consumption effect of a synbiotic beverage made from soy and yacon extracts containing Bifidobacterium animalis ssp. lactis BB-12 on the intestinal polyamine concentrations in elderly individuals.
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This study aimed to investigate the effect of a synbiotic beverage made from soy and yacon (Smallanthus sonchifolius) extracts containing Bifidobacterium animalis ssp. lactis BB-12 on healthy elderly individuals' intestinal polyamine concentrations. A randomized, double-blinded, placebo-controlled
Constitutive c-myb expression in K562 cells inhibits induced erythroid differentiation but not tetradecanoyl phorbol acetate-induced megakaryocytic differentiation.
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K562 cells were stably transfected with a plasmid vector constitutively expressing a full-length human c-myb gene. Parental cells possess the dual potential of inducibility of cellular differentiation along two lineages, i.e., erythroid and megakaryocytic. The resulting lineage is dependent on the
The mechanism of the inhibitory effect of polyamines on the induction of nitric oxide synthase: role of aldehyde metabolites.
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1. We have recently found that in the presence, but not in the absence, of foetal calf serum, spermine inhibits the production of nitric oxide (NO) in cultured J774.2 macrophages stimulated with bacterial endotoxin (lipopolysaccharide; LPS) or with gamma-interferon (IFN), showing that polyamines may
[Clinical evaluation of polyamine assay in diagnosis of malignant ascites].
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Polyamine levels were determined by precolumn derivation RH-HPLC in 68 patients with ascites including 21 malignant ascites, 28 liver cirrhosis and 19 tuberculosis. The total polyamine, especially the contents of cadaverine (CA) and spermidine (SPD) in malignant ascites were significantly higher
Development of a fast and simple gas chromatographic protocol based on the combined use of alkyl chloroformate and solid phase microextraction for the assay of polyamines in human urine.
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Polyamines are aliphatic amines with low molecular weight that are widely recognized as one of the most important cancer biomarkers for early diagnosis and treatment. The goal of the work herein presented is the development of a rapid and simple method for the quantification of free polyamines
SAHA induces caspase-independent, autophagic cell death of endometrial stromal sarcoma cells by influencing the mTOR pathway.
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Endometrial stromal sarcomas are rare and molecular mechanisms involved in their pathogenesis are poorly understood. Covalent modifications of histone proteins, in particular de/acetylation of lysine residues, play an important role in the regulation of gene transcription in normal and neoplastic
Transglutaminase participates in UVB-induced cell death pathways in human corneal epithelial cells.
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OBJECTIVE
Ultraviolet light (UVB) is known to cause apoptosis in human corneal epithelial cells. This study evaluates the role of transglutaminase in regulating tumor necrosis factor (TNF) receptor clustering as well as caspase activation in UVB-induced apoptosis in human corneal epithelial
Simple, sensitive assay of polyamines by high-performance liquid chromatography with electrochemical detection after post-column reaction with immobilized polyamine oxidase.
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This simple, rapid liquid-chromatographic assay of urinary polyamines (putrescine, spermidine, spermine, and cadaverine) involves electrochemical detection with a post-column immobilized enzyme, polyamine oxidase (EC 1.4.3.6) from soybean seedlings. Polyamines are separated by isocratic ion-pairing
Polyamine changes during senescence and tumorogenesis in plants.
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Putrescine, spermidine, spermine and two unknowns designated as A and B were detected in first seedling leaves of barley (Hordeum vulgare L. var. Wolfe). The levels of these polyamines in first seedling leaves from 4-day-old barley plants grown in darkness or in light were comparable and did not
A fluorescence anisotropy-based assay for determining the activity of tissue transglutaminase.
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Tissue transglutaminase (TGase 2) is the most abundantly expressed enzyme of the transglutaminase family and involved in a large variety of pathological processes, such as neurodegenerative diseases, disorders related to autoimmunity and inflammation as well as tumor growth, progression and
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