14 resultados
The objective response rates were determined using teniposide as first-line chemotherapy for patients with recurrent breast cancer. Twenty-seven evaluable patients with advanced disease received teniposide 70 mg/m2 i.v. days 1-5 every 3 weeks. A total of 211 courses were given. Responses included
In a phase II study, 19 patients with previously treated, advanced breast cancer received 50 mg/m2 teniposide (VM-26) i.v. on days 1-5 every 3 weeks. One partial response (PR) (5%) was observed. Toxicity consisting of leukopenia and thrombocytopenia was frequent and severe. VM-26 has minimal
Self-assembled polymeric micelles have been widely applied in anticancer drug delivery systems. Teniposide is a broad spectrum and effective anticancer drug, but its poor water-solubility and adverse effects of commercial formulation (VM-26) restrict its clinical application. In this work,
Ionizing radiation and the topoisomerase II inhibitor, teniposide (VM-26) both increase levels of the cyclin dependent kinase inhibitor, p21(waf1/cip1) and promote dephosphorylation of the retinoblastoma tumor suppressor protein, Rb, in MCF-7 breast tumor cells, perturbations associated with
In the MCF-7 breast tumor cell line, induction of bulk damage to DNA (measured either as total strand breaks or as double-strand breaks) fails to correspond with the antiproliferative activity of the demethylepipodo-phyllotoxin derivative, VM-26. In contrast, VM-26 produces an early (within 2-3 h)
BACKGROUND
Teniposide (VM-26) has been widely used in the treatment of small cell lung cancer, malignant lymphoma, breast cancer, etc. However, there are few reports on VM-26 against oral cancers. The present study was designed to identify the effect of VM-26 against oral squamous cell carcinoma in
Twenty-nine patients with brain metastases regardless of the origin were treated with the combination of 1-3-bis-(2-chloroethyl)-1-nitrosourea (BCNU), 120 mg/m2 i.v. every six weeks, and teniposide (VM26), 100 mg/m2 i.v. on the days 1 and 2 of every three-week period. Five objective responses were
The Southeastern Cancer Study Group performed a Phase II study of teniposide in previously treated patients with metastatic breast cancer. No responses were observed in 11 evaluable patients who received teniposide 60 mg/m2 by IV infusion for five consecutive days every three weeks. Toxicity was
The breast cancer resistance protein [BCRP (BCRP/ABCG2)] has not previously been directly identified as a source of resistance to epipodophyllotoxins.However, when P-glycoprotein (P-gp)- and Mrp1-deficient mouse fibroblast and kidney cell lines were selected for resistance to etoposide,
The topoisomerase II inhibitors teniposide (VM-26), doxorubicin, and amsacrine (m-AMSA), as well as ionizing radiation, induce a transient suppression of c-myc mRNA, which correlates with growth inhibition of MCF-7 breast tumor cells. To further assess the involvement of c-mvc in the DNA
OBJECTIVE
The purpose of this review is to update knowledge on therapy-related myeloid neoplasms (t-MN), taking into account the new 2008 WHO classification, new genome-wide approaches for the definition of susceptibility towards t-MN and the introduction of new more aggressive treatments in cancer
The role of chemotherapy (CT) for brain metastases (BrM) is still controversial. Limited life expectancy and presence of the blood-brain barrier (BBB) have been considered as contraindications for relatively aggressive therapies, such as CT. Nevertheless, more recent studies emphasise the
Multidrug resistance (MDR) remains one of the major challenges for successful chemotherapy. Herein, we tried to develope a mitochondria targeted teniposide loaded self-assembled nanocarrier based on stearylamine (SA-TSN) to reverse MDR of breast cancer. SA-TSN was nanometer-sized spherical particles
Lignans and neolignans are plant secondary metabolites derived from the oxidative coupling of phenylpropanoids. Biological activity of these phenolic compounds ranges from antioxidant, antitumor (terminaloside P, IC50 = 10 nM), anti-inflammatory, anti-neurodegenerative (schibitubin B,