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Perfil de expressão gênica em carcinoma neuroendócrino produtos de insulina: avaliação da agressividade tumoral / Gene expression profiling in insulin-producing neuroendocrine carcinom: tumor aggressiveness evaluation
São Paulo; s.n; 2004. [154] p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-398194
RESUMO
Insulinomas malignos correspondem entre 5-10per cent de todos os tumores de ilhota. O diagnóstico histopatológico não identifica a malignidade, somente a presença de metástase. Neste estudo foi realizada análise de expressão gênica diferencial em insulinomas com o intuito de identificar genes associados a malignidade. Foram estudados 25 pacientes com insulinoma (2 metástases). Análise de agrupamento hierárquico de alguns genes isolados reuniu os pacientes em grupos com diferentes potenciais malignos, contribuindo para melhor compreensão dos processos carcinogênicos em insulinomas / The gene expression profile associated with benign and malignant insulinomas.Five to 10 per cent insulinomas are malignant, associated with distant metastases or local invasion and histopathological diagnosis cannot identify these tumors as malignant at all. In this study differential gene expression analysis was performed in order to identify genes linked to different aggressive potentials of benign in comparison to malignant insulinomas. Twenty-five patients were studied (two metastases). Hierarchical cluster analysis of expression patterns of some isolated genes put the patients into different groups with progressive malignant potential and that may add new insights into carcinogenesis...
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Index: LILACS (Americas) Main subject: Gene Expression / Neuroendocrine Tumors / Insulinoma Limits: Adolescent / Adult / Female / Humans / Male Language: Portuguese Year: 2004 Type: Thesis

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Index: LILACS (Americas) Main subject: Gene Expression / Neuroendocrine Tumors / Insulinoma Limits: Adolescent / Adult / Female / Humans / Male Language: Portuguese Year: 2004 Type: Thesis