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Σελίδα 1 από 30 Αποτελέσματα
Is fluoride a risk factor for bone cancer? Small area analysis of osteosarcoma and Ewing sarcoma diagnosed among 0-49-year-olds in Great Britain, 1980-2005.
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BACKGROUND
Artificial fluoridation of drinking water to improve dental health has long been a topic of controversy. Opponents of this public health measure have cited the possibility of bone cancer induction. The study objective was to examine whether increased risk of primary bone cancer was
THE CONCENTRATION OF RA-226, RA-228, PB-210, LEAD AND FLUORIDE IN HUMAN BONE FROM INDIVIDUALS WITH AN OSTEOGENIC SARCOMA. ANL-6769.
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Genes associated with sodium fluoride-induced human osteoblast apoptosis.
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This study aims to explore the potential pathways and molecular characteristics of fluorine-induced osteoblast apoptosis. In vitro fluorine-induced model was established with an osteogenesis sarcoma cell line Saos-2. Then flow cytometry was used to determine the mitochondrial membrane potential at
Cytochemical and immunocytochemical characterization of Yoshida ascites sarcoma cells.
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Some cytochemical and immunocytochemical investigations were carried out on actively growing Yoshida ascites sarcoma cells. These cells displayed an intense granular alpha-naphthylacetate esterase (ANAE) staining while the alpha-naphthylbutyrate esterase (ANBE) reaction was in part
Effect of membrane phospholipid composition changes on adenylate cyclase activity in normal and rous-sarcoma-transformed chicken embryo fibroblasts.
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Adenylate cyclase specific activities in membranes isolated from chicken embryo fibroblasts transformed by Rous sarcoma virus are significantly lower than the specific activity of the enzyme in normal membranes. Since normal and transformed membranes have different phospholipid and fatty acid
Involvement of tumour necrosis factor in monocyte-mediated rapid killing of actinomycin D-pretreated WEHI 164 sarcoma cells.
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Human and murine monocyte-macrophages kill actinomycin D (ActD)-treated WEHI 164 sarcoma cells in a 6-hr 51Cr-release assay (drug-dependent cellular cytotoxicity, DDCC). In this study, we have investigated the cytotoxic activity of human recombinant tumour necrosis factor (hrTNF) against untreated
Positron emission tomography diagnosis of pulmonary metastases in osteogenic sarcoma.
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Positron emission tomography (PET) is an imaging technique that can produce high-quality tomographic images reflective of the metabolic characteristics of imaged tissue. Among the many positron-emitting tracers utilized in conjunction with PET is [18F]fluoride ion; it is actively taken up in bone in
Non-dental tissue effects of fluoride.
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The anti-caries effects of water fluoridation are well-established. The non-dental tissue effects of fluoride in drinking water, either naturally occurring or as an additive, have been too poorly studied to permit definitive conclusions to be drawn. Claims have been made that fluoride results in an
Low levels of p53 mutations in Indian patients with osteosarcoma and the correlation with fluoride levels in bone.
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The pathogenesis of osteogenic sarcoma is not known. Recently, chronic fluoride exposure has been incriminated as having a possible etiologic role by causing a nonspecific osteoblast proliferation. We were interested in exploring the possible relationship between fluoride bone content and p53
In vivo exposure to sodium fluoride does not modify the yield of viral tumour-induced periosteal bone nor of heterotopic bone induced by human tumour KB cells in mice.
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In mice local or systemic administration of fluoride (5-25 mg NaF/kg body weight) during the proliferative phase of bone formation (up to 20 days) has no effect on the yield of bone formed either by local stimulation of periosteal membrane by Moloney sarcoma virus-induced tumour or on bone induced
Alterations in components of adenylate cyclase associated with transformation of chicken embryo fibroblasts by Rous sarcoma virus.
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Regulation of adenylate cyclase coincident with transformation of chicken embryo fibroblasts by Rous sarcoma virus is manifest as a 10-50% decrease in basal, Mg2+-, and forskolin-stimulated activities; activities elicited by fluoride and guanosine 5'-O-(3-thiotriphosphate) are unaltered. The level
Fluoro deoxyglucose positron emission tomography-computerized tomography in primary staging and response assessment of a rare case of primary pleural synovial sarcoma.
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Primary pleural sarcomas constitute <1% of all primary lung cancers. Synovial sarcomas of the pleura are extremely rare. They may be mistaken for malignant mesothelioma or other spindle cell tumors, but the confirmation is by histology and immunohistochemistry. Synovial sarcomas are aggressive with
Interdisciplinary approach to the management of Ewing sarcoma: a case report.
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Ewing sarcoma is a common primary bone malignancy occurring in childhood and adolescence. This case report describes a 4-year-old female patient who had Ewing sarcoma in the left clavicular region. The patient underwent total excision of the left clavicle and subsequently developed periodontitis and
Brachial Plexopathy due to Myeloid Sarcoma in a Patient With Acute Myeloid Leukemia After Allogenic Peripheral Blood Stem Cell Transplantation.
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Myeloid sarcoma is a solid, extramedullary tumor comprising of immature myeloid cells. It may occur in any organ; however, the invasion of peripheral nervous system is rare. Herein, we report the case of myeloid sarcoma on the brachial plexus. A 37-year-old woman with acute myelogenous leukemia
A new deoxyuridine-5'-triphosphatase in Yoshida sarcoma cells involved in deoxyuridine 5'-triphosphate metabolism.
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A magnesium-independent deoxyuridine-5'-triphosphatase was found in Yoshida sarcoma cells but not in normal rat liver. The phosphatase is specific for deoxyuridine 5'-diphosphate and deoxyuridine triphosphate, and its Km for deoxyuridine triphosphate is 2.7 X 10(-7) M. The enzyme was not inhibited
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