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9 risultati
Hypoxia in human intraperitoneal and extremity sarcomas.
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OBJECTIVE
The presence of hypoxia, measured by needle electrodes, has been shown to be associated with poor patient outcome in several human tumor types, including soft tissue sarcomas. The present report emphasizes the evaluation of hypoxia in soft tissue sarcomas based upon the binding of the
Association between cage shelf level and spontaneous and induced neoplasms in mice.
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Data from a chronic feeding study with 2-acetylaminofluorene [(2-AAF) CAS: 53-96-3; N-fluoren-2-yl-acetamide] done on 20,880 female BALB/c mice were analyzed for associations between cage shelf level and occurrence of induced and spontaneous neoplasms. Each cage was maintained on a rack at a given
CD99/MIC2 Constitutes a Differentiation Antigen of a Human Osteoblast Cell Line.
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UNASSIGNED
The histological origin of the Ewing's family of tumors (EFT) is still not clear. Since these small cell bone tumors may originate from osteogenic stem cells, the presence of the CD99/MIC2 antigen, known to be overexpressed in EFT, was studied in a human osteoblast cell line in response
Malondialdehyde production from spermine by homogenates of normal and transformed cells.
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The oxidation of spermine in vitro by a mixture of polyamine oxidase and diamine oxidase from pig kidney gives rise to malondialdehyde via 3-aminopropanol as the intermediate. Conversely, with spermidine, under similar experimental conditions, no evidence could be obtained for malondialdehyde
A novel colchicine-based microtubule inhibitor exhibits potent antitumor activity by inducing mitochondrial mediated apoptosis in MIA PaCa-2 pancreatic cancer cells.
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Colchicine, an antimitotic alkaloid isolated from Colchicum autumnale, is a classical drug for treatment of gout and familial Mediterranean fever. It causes antiproliferative effects through the inhibition of microtubule formation, which leads to mitotic arrest and cell death by apoptosis. Here, we
Metexyl (4-methoxy-2,2,6,6-tetramethylpiperidine-1-oxyl) as an oxygen radicals scavenger and apoptosis inducer in vivo.
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A stable nitroxide radical named Metexyl (4-methoxy-2,2,6,6-tetramethylpiperidine-1-oxyl) was synthesized and its antioxidant and antitumor properties were investigated and compared with these of another nitroxide derivatives previously designed in our laboratories. Three experimental models were
Identification of full, partial and inverse CC chemokine receptor 3 agonists using [35S]GTPgammaS binding.
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Study of the CC chemokine receptor 3 (CCR3) has been limited to using radiolabeled agonist chemokines. A small molecule CCR3 antagonist, 2-[(6-amino-2-benzothiazolyl)thio]-N-[1-[(3,4-dichlorylphenyl)methyl]-4-piperidinyl]acetamide, Banyu (I), was tritiated and used for pharmacological studies. Banyu
[Cytomorphological changes in human tumor cells exposed to high-polar compounds].
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The effects of some high-polar compounds on the cytomorphological characteristics of cultured cells of synovial and osteogenic human sarcomas (Sa-2 and Sa-4) were studied. Incubation of Sa-2 cells with 1 or 2% dimethylsulfoxide (DMSO) or 100 mM dimethylformamide (DMF) during 4-6 days induced the
Optimizing hypoxia detection and treatment strategies.
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Clinical studies using Eppendorf needle sensors have invariably documented the resistance of hypoxic human tumors to therapy. These studies first documented the need for individual patient measurement of hypoxia, as hypoxia varied from tumor to tumor. Furthermore, hypoxia in sarcomas and cervical
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