diacetyl/sarcoma

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Uptake and distribution of 4,4'-diacetyl-diphenyl-urea-bis-guanylhydrazone in sensitive and resistant sarcoma 180 cells in vitro.

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Inhibition of the RNA dependent DNA polymerase and the malignant transforming ability of Rous sarcoma virus by thiosemicarbazone-transition metal complexes.

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Several thiosemicarbazone-metal complexes inhibit the RNA dependent DNA polymerase and the transforming ability of Rous sarcoma virus. Some complexes are equally as active as the free ligand whereas the activity of others is greatly enhanced. The 2-formyl pyridine thiosemicarbazone copper (II)

[Ion conductance channels of bilayer from sarcoma-45 phospholipids].

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Properties of black bilayer membranes formed from sarcoma-45 phospholipids differed from those of normal cell phospholipids bilayers. Two types of Ca2+-channels were discovered: those multiple to 35 pA and those multiple to 90 pA. The study of bilayers from phospholipids of nuclei, mitochondria,

Cytochemical characterization of Yoshida sarcoma cells resistant to dibromodulcitol.

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Two Yoshida ascites sarcoma cell populations, one of them originally sensitive and another rendered resistant to the alkylating agent dibromodulcitol (DBD), were compared for doubling time, labeling index, survival time, morphological features, cellular DNA content and modal DNA value.

(64)Cu-ATSM and (18)FDG PET uptake and (64)Cu-ATSM autoradiography in spontaneous canine tumors: comparison with pimonidazole hypoxia immunohistochemistry.

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BACKGROUND The aim of this study was to compare (64)Cu-diacetyl-bis(N(4)-methylsemicarbazone) ((64)Cu-ATSM) and (18)FDG PET uptake characteristics and (64)Cu-ATSM autoradiography to pimonidazole immunohistochemistry in spontaneous canine sarcomas and carcinomas. METHODS Biopsies were collected from

Heterogeneity in intratumor correlations of 18F-FDG, 18F-FLT, and 61Cu-ATSM PET in canine sinonasal tumors.

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Intratumor heterogeneity in biologic properties and in relationships between various phenotypes may present a challenge for biologically targeted therapies. Understanding the relationships between different phenotypes in individual tumor types could help inform treatment selection. The goal of this

Spatiotemporal stability of Cu-ATSM and FLT positron emission tomography distributions during radiation therapy.

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OBJECTIVE In dose painting, in which functional imaging is used to define biological targets for radiation therapy dose escalation, changes in spatial distributions of biological properties during treatment can compromise the quality of therapy. The goal of this study was to assess the

Dose painting based on tumor uptake of Cu-ATSM and FDG: a comparative study.

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BACKGROUND Hypoxia and increased glycolytic activity of tumors are associated with poor prognosis. The purpose of this study was to investigate differences in radiotherapy (RT) dose painting based on the uptake of 2-deoxy-2-[(18) F]-fluorodeoxyglucose (FDG) and the proposed hypoxia tracer,

[Studies of the antitumor activity and enzymology of 2'-deoxy-5-fluorouridine (FdUrd) derivatives].

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The antitumor activity and enzymology of 2'-deoxy-3', 5'-bis-O-(4-methoxyphenoxycarbonyl)-5-fluoro-3-(4-n-Propoxybenz oyl uridine (FF-707) were examined. It was found that stability in small intestine homogenate of FF-707 was higher than that of FF-705 [2'-deoxy-3', 5'-O-diacetyl-5-fluoro-3-(3

BBM-928, a new antitumor antibiotic complex. I. Production, isolation, characterization and antitumor activity.

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A complex of the antitumor antibiotic BBM-928 was produced by an actinomycete strain No. G455-101. Four components, BBM-928 A, B, C and D, were isolated in crystalline form and characterized. They were shown to be cyclic depsipeptide antibiotics containing a quinoline nucleus as the chromophore.

Retention of the radiotracers 64Cu-ATSM and 64Cu-PTSM in human and murine tumors is influenced by MDR1 protein expression.

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Tumor hypoxia is often associated with resistance to chemotherapy. Multidrug resistance type 1 (MDR1) protein is a member of the adenosine triphosphate binding cassette (ABC) proteins, some of which are involved in the multidrug resistance (MDR) phenotype in tumors. Many studies have focused on the

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