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Страница 1 од 19 резултати
DEVELOPMENT OF SUBCUTANEOUS SARCOMAS IN SWISS MICE GIVEN REPEATED INJECTIONS OF BENZENE IN OLIVE OIL.
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A functional, new short isoform of death receptor 4 in Ewing's sarcoma cell lines may be involved in TRAIL sensitivity/resistance mechanisms.
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Ewing's sarcoma (ES) is a high-grade neoplasm arising in bones of children and adolescents. Survival rate decreases from greater than 50% to only 20% after 5 years for patients not responding to treatment or presenting metastases at diagnosis. TRAIL, which has strong antitumoral activity, is a
Effect of temozolomide on the viability of musculoskeletal sarcoma cells.
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Musculoskeletal sarcomas (MSS) are a heterogeneous group of malignancies with relatively high mortality rates. The prognosis for patients with MSS is poor, with few drugs inducing measurable activity. Alkylating agents, namely ifosfamide and dacarbazine, which act nonspecifically on proliferating
Occupation and soft-tissue sarcoma in northeastern Italy.
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The influence of occupation and exposure to different agents on the risk of developing soft-tissue sarcoma (STS) was assessed in a case-control study based on 93 cases of STS (53 men and 40 women) and 721 controls (371 men and 350 women), conducted in northeastern Italy. No risk elevation was found
Risk factors for adult soft tissue sarcoma in northern Italy.
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The role of several potential risk factors in the etiology of soft-tissue sarcoma (STS) was examined in a hospital-based case-control study, conducted in the Friuli-Venezia Giulia region, northeast Italy, between 1985 and 1991. A total of 93 STS cases (53 males and 40 females, median age: 52 years)
An analysis of the Gene-Tox Carcinogen Data Base.
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The Gene-Tox Carcinogen Data Base is an evaluated source of cancer data on 506 chemicals selected in part for their previous assessment in genetic toxicology bioassays. This data base has been analyzed for the distribution of these chemicals into chemical classes. The major chemical classes (6% or
Synthesis, DNA binding and antiviral activity of distamycin analogues containing different heterocyclic moieties.
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A series of novel distamycin analogues possessing an additional benzene or heterocyclic ring have been synthesised and tested for selective DNA binding properties and antiviral activity. Inhibition of herpes virus in cell culture appears to be related to AT base pair specificity. Some of the new
Loss of heterozygosity frequency at the Trp53 locus in p53-deficient (+/-) mouse tumors is carcinogen-and tissue-dependent.
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Mutagenic carcinogens rapidly induced tumors in the p53 haploinsufficient mouse. Heterozygous p53-deficient (+/-) mice were exposed to different mutagenic carcinogens to determine whether p53 loss of heterozygosity (LOH) was carcinogen-and tissue-dependent. For 26 weeks, C57BL/6 (N4) [corrected]
Modeling of the inhibition of retroviral integrases by styrylquinoline derivatives.
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Styrylquinoline derivatives, known to be potent inhibitors of HIV-1 integrase, have been experimentally tested for their inhibitory effect on the disintegration reaction catalyzed by catalytic cores of HIV-1 and Rous sarcoma virus (RSV) integrases. A modified docking protocol, consisting of coupling
Critical assessment of epidemiologic studies on the human carcinogenicity of 1,3-butadiene.
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1,3-Butadiene, a major ingredient of synthetic rubber, has been shown to be carcinogenic in two animal species. To assess the possible human carcinogenicity of 1,3-butadiene, a critical review was undertaken of the epidemiologic literature. An early retrospective study of 8017 males employed in tire
Chromosome 11 allelotypes reflect a mechanism of chemical carcinogenesis in heterozygous p53-deficient mice.
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Mice heterozygous for a null p53 allele were administered three well-characterized carcinogens to learn more about mechanisms of carcinogenesis and to evaluate the p53-deficient mouse as a tool for identifying potential human carcinogens. Benzene-induced sarcomas, p-cresidine-induced bladder
The Trp53 hemizygous mouse in pharmaceutical development: points to consider for pathologists.
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ILSI-HESI sponsored an international consortium for the evaluation of alternative models, including the TrpS3+/- mouse. for use in short-term carcinogenicity testing of pharmaceuticals. Products of the ILSI evaluation included guidance for protocol design and assay interpretation, spontaneous tumor
Protection of hydroquinone-induced apoptosis by downregulation of Fau is mediated by NQO1.
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The Fau gene (Finkel-Biskis-Reilly murine sarcoma virus (FBR-MuSV)-associated ubiquitously expressed gene) was identified as a potential tumor suppressor gene using a forward genetics approach. Downregulation of Fau by overexpression of its reverse sequence has been shown to inhibit apoptosis
In vitro enhancement of tumor cell radiosensitivity by a selective inhibitor of cyclooxygenase-2 enzyme: mechanistic considerations.
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OBJECTIVE
Selective cyclooxygenase-2 inhibitors have been reported to enhance the tumor response to radiation in vivo, but the cellular mechanisms underlying the radiosensitizing effect are not understood. In the present study, we investigated several possible mechanisms using a murine sarcoma cell
Evaluation of dimethoxydop-NU as a novel anti-tumor agent.
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Dimethoxydop-NU, 1-[2-{3-(2-Chloroethyl)-3-nitrosoureido}ethyl]-3,4-dimethoxy-benzene (Compound 1), was synthesized from 3,4-dimethoxy-phenethylamine as a novel anti-tumor agent based on the structures of the clinical drug CCNU and dopamine, an important endogenous biological amine having
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