Gastric cancer is the second leading cause of death by cancer in Brazil. Early gastric cancer represents similar to 10% of gastric cancer cases in some services of Brazil, which underscores the need for early gastric cancer diagnosis that could lead to better prognosis. There are few published studies of cytogenetic alterations in early gastric cancer. To evaluate MYC copy number and its protein expression, we performed fluorescence in situ hybridization and immunohistochemical analyses in five early gastric adenocarcinomas in individuals from northern Brazil. Three signals of MYC and MYC immunoreactivity were observed in all five samples, regardless of histologic type, tumor extension, or lymph nodal status. These novel findings concerning MYC copy number alteration in early gastric cancer suggest that MYC alteration is observed in the beginning of gastric carcinogenesis and could be used as a therapeutic target. (c) 2008 Elsevier Inc. All rights reserved.
机构:
Human Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Danielle Queiroz Calcagno
Mariana Ferreira Leal
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Genetics Division Department of Morphology, Federal University of So Paulo, So Paulo, SP, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Mariana Ferreira Leal
Aline Damaceno Seabra
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Human Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Aline Damaceno Seabra
André Salim Khayat
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Human Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
André Salim Khayat
Elizabeth Suchi Chen
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Genetics Division Department of Morphology, Federal University of So Paulo, So Paulo, SP, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Elizabeth Suchi Chen
Samia Demachki
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Department of Pathology and Surgery Service, Federal University of Pará, Belém, PA, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Samia Demachki
Paulo Pimentel Assumpo
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Joo de Barros Barreto University Hospital, Federal University of Pará, Belém, PA, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Paulo Pimentel Assumpo
Mario Henrique Giro Faria
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Molecular Genetics Laboratory Department of Pathology, Medical School, Federal University of Ceará, Fortaleza, CE, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Mario Henrique Giro Faria
Silvia Helena Barem Rabenhorst
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Molecular Genetics Laboratory Department of Pathology, Medical School, Federal University of Ceará, Fortaleza, CE, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Silvia Helena Barem Rabenhorst
Márcia Valéria Pitombeira Ferreira
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Molecular Genetics Laboratory Department of Pathology, Medical School, Federal University of Ceará, Fortaleza, CE, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Márcia Valéria Pitombeira Ferreira
Marília de Arruda Cardoso Smith
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Genetics Division Department of Morphology, Federal University of So Paulo, So Paulo, SP, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
Marília de Arruda Cardoso Smith
Rommel Rodríguez Burbano
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Human Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil Genetics Division Department of Morphology, Federal University of So Paulo, So Paulo, SP, BrazilHuman Cytogenetics and Toxicological Genetics Laboratory, Department of Biology, Center of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
机构:
Univ Fed Piaui, Colegiado Biomed, Parnaiba, PI, Brazil
Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, Ribeirao Preto, BrazilUniv Fed Piaui, Colegiado Biomed, Parnaiba, PI, Brazil
Lima, Eleonidas Moura
Leal, Mariana Ferreira
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Escola Paulista Med, Dept Morfol, BR-04023 Sao Paulo, BrazilUniv Fed Piaui, Colegiado Biomed, Parnaiba, PI, Brazil
Leal, Mariana Ferreira
Cardoso Smith, Marilia de Arruda
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Escola Paulista Med, Dept Morfol, BR-04023 Sao Paulo, BrazilUniv Fed Piaui, Colegiado Biomed, Parnaiba, PI, Brazil