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Oldal 1 tól től 60 eredmények
Synthesis and antineoplastic activity of bis[[[(alkylamino)carbonyl]oxy]methyl]-substituted 3-pyrrolines as prodrugs of tumor inhibitory pyrrole bis(carbamates).
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A series of bis[(carbamoyloxy)methyl]pyrrolines 2-4 were synthesized from either the appropriate alpha-silylated iminium salt, or an aziridine, or a 2H-azirine in a sequence involving 1,3-dipolar cycloaddition reactions. The antineoplastic activities of the pyrrolines were compared to the
Involvement of oxidative stress in tumor cytotoxic activity of hepatocyte growth factor/scatter factor.
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In this study, we show that N-acetylcysteine (NAC), a precursor of glutathione and an intracellular free radical scavenger, almost completely prevented hepatocyte growth factor (HGF)-suppressed growth of Sarcoma 180 and Meth A cells, and HGF-induced apoptosis, assessed by DNA fragmentation, and
Biosynthesis of xyrrolin, a new cytotoxic hybrid polyketide/non-ribosomal peptide pyrroline with anticancer potential, in Xylaria sp. BCC 1067.
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A gene from Xylaria sp. BCC 1067, pks3, that encodes a putative 3660-residue hybrid polyketide synthase (PKS)/non-ribosomal peptide synthetase (NRPS) was characterised by targeted gene disruption in combination with comprehensive product identification. Studies of the features of a corresponding
Pyrroline-5-carboxylate stimulates the conversion of purine antimetabolites to their nucleotide forms by a redox-dependent mechanism.
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The activation of purine antimetabolites to their respective nucleotides is a step critical to their effectiveness as chemotherapeutic agents. Erythrocytes, with their relatively simple purine metabolism, are useful as a model for identifying mechanisms which enhance this 5-phosphoribosyl
The metabolism of 17 beta-estradiol by lactoperoxidase: a possible source of oxidative stress in breast cancer.
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Electron spin resonance (ESR) spectroscopy and oxygen consumption measurements using a Clark-type oxygen electrode have been used to study the metabolism of the estrogen 17 beta-estradiol by lactoperoxidase. Evidence for a one-electron oxidation of estradiol to its reactive phenoxyl radical
Is rat LRRP Ba1-651 a Delta-1-pyrroline-5-carboxylate dehydrogenase activated by changes in the concentration of sweet molecules?
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The liver is one of the most complex organs in the body, which responds to hepatocellular damage with inflammatory, regenerative and repair processes designed to restore functional liver tissue mass. Rat LRRP Ba1-651, a liver regeneration related protein induced during partial hepatectomy, is
Actions of a histone deacetylase inhibitor NSC3852 (5-nitroso-8-quinolinol) link reactive oxygen species to cell differentiation and apoptosis in MCF-7 human mammary tumor cells.
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NSC3852 (5-nitroso-8-quinolinol) has cell differentiation and antiproliferative activity in human breast cancer cells in tissue culture and antitumor activity in mice bearing P388 and L1210 leukemic cells. We investigated the mechanism of NSC3852 action in MCF-7 human breast cancer cells using
The plasma superoxide scavenging activity in canine cancer and hepatic disease.
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To clarify the relationship between plasma antioxidant activity and diseases in dogs, plasma samples were collected from 6 healthy dogs and 16 diseased dogs (6 dogs with cancer, 5 dogs with hepatic disease, and 5 dogs with inflammation ), and measured superoxide anion scavenging activities.
Skin sensitization with the new reagents NOPYE (4-nitro-1-cyclohexyl-3-ethoxy-2-oxo-3-pyrroline) and NOPY-L-phenylalanine.
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The aim of this study was to investigate the compound 4-nitro-1-cyclohexyl-3-ethoxy-2-oxo-3-pyrroline (NOPYE) and some related compounds for skin sensitization in guinea pigs, as the first step in a search for more effective skin sensitizers for immunotherapy of cutaneous tumors. In guinea pigs,
Study of the controversial resveratrol that interact with the endogenous glutathione thiyl radical in cancer cells
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Found in various natural food products, many in vitro evidence indicated that resveratrol (RES) has been linked to neuroprotective and cardioprotective effects and prevent cancer development. However, human clinical trials have been conducted with varying results, making the usage of RES
UVA-induced effects of 2,6-disubstituted 4-anilinoquinazolines on cancer cell lines.
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Five 2,6-substituted 4-anilinoquinazolines were evaluated for their ability to generate superoxide radical anion and singlet oxygen upon UVA irradiation and to induce cytotoxic/phototoxic effects on cancer cell lines L1210, HeLa and HT-29. The formation of radical intermediates, especially reactive
Crystal structure of human pyrroline-5-carboxylate reductase.
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Pyrroline-5-carboxylate reductase (P5CR) is a universal housekeeping enzyme that catalyzes the reduction of Delta(1)-pyrroline-5-carboxylate (P5C) to proline using NAD(P)H as the cofactor. The enzymatic cycle between P5C and proline is very important for the regulation of amino acid metabolism,
A novel plausible mechanism of NSAIDs-induced apoptosis in cancer cells: the implication of proline oxidase and peroxisome proliferator-activated receptor
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Although pharmaco-epidemiological studies provided evidence for the anticancer potential of non-steroidal anti-inflammatory drugs (NSAIDs), the mechanism of their anti-cancer activity is not known. Several lines of evidence suggest that proline dehydrogenase/proline oxidase (PRODH/POX) may represent
Proline biosynthesis augments tumor cell growth and aerobic glycolysis: involvement of pyridine nucleotides.
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The metabolism of the nonessential amino acid proline contributes to tumor metabolic reprogramming. Previously we showed that MYC increases proline biosynthesis (PB) from glutamine. Here we show MYC increases the expression of the enzymes in PB at both protein and mRNA levels. Blockade of PB
Induction of superoxide dismutase and cytotoxicity by manganese in human breast cancer cells.
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MnCl2 induced manganese-containing superoxide dismutase (MnSOD) expression (mRNA, immunoreactive protein, and enzyme activity) in human breast cancer Hs578T cells. The induction of MnSOD immunoreactive protein in Hs578T cells was inhibited by tiron (a metal chelator and superoxide scavenger),
A legteljesebb gyógynövény-adatbázis, amelyet a tudomány támogat
- Működik 55 nyelven
- A tudomány által támogatott gyógynövényes kúrák
- Gyógynövények felismerése kép alapján
- Interaktív GPS térkép - jelölje meg a gyógynövényeket a helyszínen (hamarosan)
- Olvassa el a keresésével kapcsolatos tudományos publikációkat
- Keresse meg a gyógynövényeket hatásuk szerint
- Szervezze meg érdeklődését, és naprakész legyen a hírkutatással, a klinikai vizsgálatokkal és a szabadalmakkal
Írjon be egy tünetet vagy betegséget, és olvassa el azokat a gyógynövényeket, amelyek segíthetnek, beírhat egy gyógynövényt, és megtekintheti azokat a betegségeket és tüneteket, amelyek ellen használják.
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