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Página 1 a partir de 17 resultados
Photodynamic therapy of experimental sarcoma M-1 with boronated chlorine as a photosensitizer.
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Using rat model of experimental sarcoma M-1 we studied the efficacy of photodynamic therapy with boronated chlorine as a photosensitizer in doses of 1.25, 2.5, 5.0, and 10.0 mg/ kg body weight. Laser irradiation was performed at energy densities of 150, 300 J/cm(2) and power density of 0.25 and 0.42
Effect of photodynamic therapy with photodithazine on morphofunctional parameters of M-1 sarcoma.
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Efficiency and mechanisms of action of photodynamic therapy of M-1 sarcoma were studied experimentally on rats using photodithazine, a novel chlorine photosensitizer. The tissue and cellular targets for this agent are vascular wall, plasma membrane of tumor cells, and intracellular structures
Antitumor effect of a calmodulin antagonist on the growth of solid sarcoma-180.
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A calmodulin antagonist, N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7), proved to have antitumor activity against solid Sarcoma-180. In particular, intraperitoneal injection of W-7 strongly inhibited the growth of solid Sarcoma-180 in mice given a daily dose, 10 mg/kg for 10 consecutive
Residential proximity to an industrial incinerator and risk of soft-tissue sarcoma, 1999-2014
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Background: exposure to dioxins has been associated with an increased risk of soft-tissue sarcoma (STS). In a study relating to 1989-1998, a significant excess of STS was found in the population living within a 2-kilometre radius of an
Case-control study on occupational risk factors for soft-tissue sarcoma.
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OBJECTIVE
The main objective of this study was to investigate potential association between development of soft-tissue sarcoma (STS) and occupational exposures related to farming and the agricultural industry in Canada.
METHODS
A population-based case-control study of STS was conducted among
2'-Fluorinated isonucleosides. 1. Synthesis and biological activity of some methyl 2'-deoxy-2'-fluoro-2'-pyrimidinyl-D-arabinopyranosides.
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New reactions of methyl 2,2-difluoro glycosides are described that were utilized for synthesis of some novel nucleoside derivatives. Thus, treatment of methyl 2-deoxy-2,2-difluoro-3,4-O-isopropylidene-alpha (beta)-D-erythro-pyranoside (2) with anhydrous HCl resulted in selective displacement of one
[Bone tumor macroelements].
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Neutron-activation method was employed to determine the concentration of magnium, sodium, chlorine, phosphorus and calcium in different bone tumors. In relation to normal skeletal tissue in tumor tissues higher concentrations of chlorine and sodium but lower concentrations of calcium and phosphorus
The reactivity and carcinogenicity of aflatoxin B1-2,3-dichloride, a model for the putative 2,3-oxide metabolite of aflatoxin B1.
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Aflatoxin B1-2,3-dichloride (AFB1-Cl2) was synthesized as a model for the probable ultimate carcinogen, aflatoxin B1-2,3-oxide. As expected for aflatoxin B1-2,3-oxide, AFB1-Cl2 has an electrophilic carbon 2; it decomposed in water (half-life of 0.5 min in 10% dimethyl sulfoxide, pH 7.4) with the
[Chemotherapeutic effects of nitro compounds. 1. Nitroanilines].
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More than 200 nitro compounds, most of them nitroaniline derivatives substituted with one or more radicals having a basic reaction, were prepared and investigated as to their therapeutic activity against bacteria, fungi, protozoa, helminths, viruses and tumors. Several mono-nitrobenzenes with a
Health impact of polychlorinated dibenzo-p-dioxins: a critical review.
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Polychlorinated dibenzo-p-dioxins (PCDDs), commonly known as dioxins, form as unwanted impurities in the manufacturing of chlorophenol and its derivatives--pulp and paper--and in the combustion of municipal, sewage-sludge, hospital, and hazardous waste. Combustion, in presence of a chlorine donor,
Zinc(II) complexes with potent cyclin-dependent kinase inhibitors derived from 6-benzylaminopurine: synthesis, characterization, X-ray structures and biological activity.
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The synthesis, characterization and biological activity of the first zinc(II) complexes with potent inhibitors of cyclin-dependent kinases (CDKs) derived from 6-benzylaminopurine are described. Based on the results following from elemental analyses, infrared, NMR and ES+MS (electrospray mass spectra
Antitumor activity of halogen analogs of phosphoramide, isophosphoramide, and triphosphoramide mustards, the cytotoxic metabolites of cyclophosphamide, ifosfamide, and trofosfamide.
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A series of halogen analogs of phosphoramide mustard, isophosphoramide mustard, and triphosphoramide mustard, the cytotoxic metabolites of the antitumor drugs cyclophosphamide, ifosfamide, and trofosfamide, respectively, was evaluated in vitro against human tumor cell lines and in vivo against
[Antitumor activity and pharmacological properties of furizil].
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The paper discusses the biological properties of 2-(2-furyl)-5-oxymethyl-5-(2,4-diethyleneimino-1,3,5-triazine- 6-yl) amino-1,3-dioxane (furizil), synthesized by substituting ethyleneimine groups for chlorine atoms in individual stereoisomer of a dichlorotriazine derivative. Furizil was found to
Antineoplastic activity of azacarbazoles. I. Synthesis and antitumor properties of alpha-carboline and its selected derivatives.
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alpha-Carboline and its several derivatives have been synthesized and evaluated for their antitumor activity against L1210 lymphoid leukemia, P388 lymphocytic leukemia and Sarcoma 180. It was found that of these compounds only alpha-carboline and its derivatives substituted in C-4 position with a
Review of the pharmacological properties of toremifene.
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New compounds were synthesized with the aim to develop new anti-estrogenic antitumor drugs. The biological properties of the molecules were screened by (1) estrogen receptor (ER) binding, (2) effect on MCF-7 cells, (3) uterotrophic effect and inhibition of estradiol induced uterotropic effect and
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