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anthraquinone/sarcoma
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14 resultados
Antiretroviral activities of anthraquinones and their inhibitory effects on reverse transcriptase.
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Alizarin complexone (AC), alizarin Red S (ARS) and various other anthraquinones were evaluated for their inhibitory effects on Rous-associated virus 2 reverse transcriptase (RAV-2 RT). Some 1,2-dihydroxyanthraquinones were active against this enzyme and AC was the most potent inhibitor among these
2-(1-Oxyalkyl)-1,4-dioxy-9,10-anthraquinones: synthesis and evaluation of antitumor activity.
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Fourty eight derivatives of 2-(1-oxyalkyl)-1,4-dioxy-9,10-anthraquinone were synthesized, and their antitumor activity was evaluated. On the whole, 2-(1-hydroxyalkyl)-1,4-dihydroxy-9,10-anthraquinones (DHAQ = 1,4-dihydroxy-9,10-anthraquinone) showed stronger cytotoxic activity against L1210 cells
Antiproliferative and cytotoxic effects of N,N-diethylaminoethyl ethers of flavanone oximes: a comparison with anthracycline(s), anthraquinone and nitroxides action.
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Since flavanone oximes derivatives (ethers) have been shown to modulate the growth of Yoshida Sarcoma cells in vivo and to induce apoptosis, the effects of these substances on immortalized cell lines growth were examined. Cell viability and sensitivity to investigated substances was measured by the
Anticancer potential of N,N-diethylaminoethyl ethers of flavanone oximes: a comparison with mitoxantrone action on rat Yoshida sarcoma cells in vivo.
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This study was performed to evaluate the anticancer abilities of four biologically active N,N-diethylaminoethyl ethers of flavanone oximes against rat Yoshida Sarcoma cells in vivo, and to investigate the mechanism(s) involved. The effects were compared with those of anthraquinone drug
Enhancement by electron-affinic agents of the therapeutic effects of cytotoxic agents against the KHT tumor: structure-activity relationships.
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We have studied the effectiveness of various electron-affinic and other modifying agents on the in vivo response of the KHT sarcoma to various cytotoxic agents. Misonidazole (MISO) showed good enhancement with CCNU, methyl-CCNU, BCNU and chlorambucil (CHL), a small enhancement with cyclophosphamide
Targeting Canine KIT Promoter by Candidate DNA G-Quadruplex Ligands.
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G-quadruplexes (G4) are nucleic acid secondary structures frequently assumed by G-rich sequences located mostly at telomeres and proto-oncogenes promoters. Recently, we identified, in canine KIT (v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog) promoter, two G-rich sequences able to
Hypericin: a new laser phototargeting agent for human cancer cells.
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Laser activation of anthracycline-related drugs combines chemotherapy with photoablation for improved treatment. Hypericin, a structurally related anthraquinone, was tested for laser activation and cytotoxicity in human cancer cells. Viability of P3 squamous cell carcinoma cells incubated with 1 to
[Current clinical status of new anticancer drugs].
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4'-Epiadriamycin demonstrated considerable efficacies in lymphomas, breast cancer and soft part sarcomas with reduced gastrointestinal, hematologic and probably cardiac toxicities. Mitoxantrone appears to be established the clinical role in lymphomas, acute leukemia and breast cancer with mild
Anti-proliferative effect of leaf extracts of Eucalyptus citriodora against human cancer cells in vitro and in vivo.
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Six different extracts from Eucalyptus citriodora leaves were investigated for their anticancer effect. Extracts were prepared using a range of polar and non-polar solvents to leach out maximum active components. Phytochemical analysis of the extracts revealed the presence of anthraquinones, cardiac
Continuous infusion mitoxantrone in relapsed acute nonlymphocytic leukemia.
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Mitoxantrone is a substituted anthraquinone with considerable activity against human acute leukemia. The authors' goal was to treat patients with continuous infusion mitoxantrone in order to maintain cytotoxic steady state levels with acceptable toxicity and to assess the results. Daily mitoxantrone
Inhibition of purified DNA polymerase of RNA tumor viruses by fluoranthene derivatives and analogues of tilorone hydrochloride.
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At concentrations of 7 times 10(-6) to 7 times 10(-5) M, derivatives consisting of the polycylic ring structures fluoranthene, fluorenone, fluorene, anthraquinone, xanthenone, and dibenzofuran with appropriate amine side chains inhibited by over 90% the purified RNA-directed DNA polymerase of avian
New potential cytotoxic and antitumor substances I. In vitro effect of bikaverin and its derivatives on cells of certain tumors.
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Bikaverin and its derivatives have been found to affect precursor utilization of nucleic acid and protein synthesis in the cells of Ehrlich ascites carcinoma (EAC). Mainly the uridine incorporation into EAC cells was inhibited. This is in agreement with the known concept that anthraquinones, to
Cichorins D-F: Three New Compounds from Cichorium intybus and Their Biological Effects
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Cichorium intybus L., (chicory) is employed in various traditional medicines to treat a wide range of diseases and disorders. In the current investigation, two new naphthalane derivatives viz., cichorins D (1) and E (2), along with one new anthraquinone cichorin F (3),
Very low doses of ionizing radiation and redox associated modifiers affect survivin-associated changes in radiation sensitivity.
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Exposure of cells to a dose of ionizing radiation as low as 5mGy can induce changes in radiation sensitivity expressed by cells exposed to subsequent higher doses at later times. This is referred to as an adaptive effect. We describe a unique survivin-associated adaptive response in which increased
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