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Strana 1 od 64 výsledky
Differential Sensitivity of Taxol-induced Apoptosis in U2OS and SaOS2 Osteogenic Sarcoma Cells.
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OBJECTIVE
Taxol (Paclitaxel) is a new generation of chemotherapeutic drug proven to be effective in the treatment of many cancers. In this study, to further demonstrate the differential effect of the tumor suppressor gene, p53, on the Taxol-induced apoptosis in osteogenic sarcoma cell lines, we used
Herceptin down-regulates HER-2/neu and vascular endothelial growth factor expression and enhances taxol-induced cytotoxicity of human Ewing's sarcoma cells in vitro and in vivo.
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We have previously shown that high levels of HER-2/neu protein were overexpressed in human Ewing's sarcoma cells (TC71, SK-ES1) relative to normal human osteoblasts. The purpose of this study was to determine whether herceptin alone or in combination with chemotherapeutic agents could inhibit the
Reversal of doxorubicin, etoposide, vinblastine, and taxol resistance in multidrug resistant human sarcoma cells by a polymer of spermine.
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We have previously described the synthesis of a cytotoxic polymeric conjugate of spermine (Poly-SPM) which is able to inhibit the transport of polyamines (spermine, spermidine, and putrescine) into normal and malignant cells. Recent studies examining the toxicity of Poly-SPM in parental and
Phorbol myristate induces apoptosis of taxol-resistant sarcoma cells in vitro.
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Taxol was found to induce polyploidization and apoptosis in cultured methylcholanthrene-induced sarcoma cells (Meth-A cells), but some of the cells in G1 phase were not affected. We refer to these cells as taxol-resistant cells. Phorbol 12-myristate 13-acetate (PMA), a protein kinase C (PKC)
Involvement of protein kinase C in taxol-induced polyploidization in a cultured sarcoma cell line.
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Taxol was found to inhibit the proliferation and to induce the polyploidization of cultured methylcholanthrene-induced sarcoma cells (Meth-A cells). To investigate whether protein kinase C is involved in taxol-induced polyploidization, phorbol 12-myristate 13-acetate (PMA), which regulates the
Regional drug delivery with radiation for the treatment of Ewing's sarcoma. In vitro development of a taxol release system.
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Recently, several studies have suggested the radiosensitizing effect of taxol, a microtubular inhibitor. Our overall hypothesis is that a combination of radiation and taxol may demonstrate therapeutic efficacy over doses of either individually. Studies examining taxol use have mostly focused on
Paclitaxel (Taxol) plus doxorubicin plus filgrastim in advanced sarcoma: a phase II study.
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The authors evaluated the novel chemotherapeutic regimen of paclitaxel (Taxol, Bristol-Myers Squibb, Princeton, NJ, U.S.A.) plus doxorubicin plus filgrastim--a granulocyte colony-stimulating factor (G-CSF)--in advanced or metastatic sarcoma. Eligible patients must have had histologically confirmed
Paclitaxel (Taxol)-induced apoptosis in human epithelioid sarcoma cell lines is enhanced by upregulation of CD95 ligand (FasL/Apo-1L).
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OBJECTIVE
Metastasizing epithelioid sarcoma (ES) is an extremely aggressive tumor, because conventional chemotherapy and irradiation are largely ineffective. Here, we analyzed the impact of the CD95-mediated drug-induced apoptosis in ES cell lines.
METHODS
The effects of paclitaxel (Taxol) and 5-FU
Resistance mechanisms in human sarcoma mutants derived by single-step exposure to paclitaxel (Taxol).
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A fluctuation analysis experiment was performed by exposing 15 expanded populations of MES-SA sarcoma cells to paclitaxel (Taxol) at a concentration of 10 nM for 7 days. The mutation rate was approximately 8 multiplied by 10(-7)/cell generation. ANOVA supports a stochastic cell survival mechanism of
Paclitaxel (taxol) in pretreated, relapsed and/or metastatic adult soft tissue sarcomas (STS).
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Twelve patients suffering from recurrent or metastatic, previously treated, STS were given paclitaxel as a 3-hour infusion, with prophylactic medication, in 3-week cycles, at two different dosages: 135 mg/m(2) or 175 mg/m(2) in patients pretreated with less than or equal to 2 or greater than or
Establishment, characterization and drug sensitivity of four new human soft tissue sarcoma cell lines.
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Four new cell lines were established from patients with soft tissue sarcomas. Drug sensitivity as well as genotypic characterization, which may be related to drug sensitivity in these cell lines, was determined. Karyotype, H-ras, c-myc and mutant p53 gene expression, Rb, G1- and S-phase cyclins, E2F
[Influence of newly synthesized sesquiterpenes--analogs of taxol on multiplication of herpes simplex virus (HSV-1MC) and retrovirus (Mo-MSV)].
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The study comprised newly synthesized sesquiterpenoid analogs of taxol. The synthesis of the compounds was performed at the Institute of Organic Chemistry, Polish Academy of Sciences. Cytotoxicity of the compound was assessed using formazan method. In in vitro studies the cell cultures were infected
Undifferentiated Embryonal Sarcoma of the Liver in an Adult Patient.
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An undifferentiated embryonal sarcoma of the liver (UESL) is a rare and highly malignant mesenchymal neoplasm that is uncommonly observed in adults. We report a case of UESL found in a 26-year-old female. Our case was initially regarded as a type II hydatid cyst and then a malignant mass in
Paclitaxel in the treatment of human immunodeficiency virus 1-associated Kaposi's sarcoma--drug-drug interactions with protease inhibitors and a nonnucleoside reverse transcriptase inhibitor: a case report study.
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OBJECTIVE
To describe the pharmacokinetics of paclitaxel and to investigate the interaction potential with protease inhibitors (indinavir, ritonavir, saquinavir) and the nonnucleoside reverse transcriptase inhibitor nevirapine, for which strong theoretical indications for clinically relevant drug
A phase II trial of paclitaxel in the treatment of recurrent or metastatic soft tissue sarcomas or bone sarcomas.
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The study aimed to determine the activity and toxicity of taxol in the treatment of recurrent or metastatic soft tissue sarcomas or osteosarcomas. The major findings are that five patients had stable disease after two cycles of chemotherapy but two of these patients were subsequently removed from
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