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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Análise etiológica da metaplasia óssea endometrial / Etiologic analysis of endometrial osseous metaplasia

Parente, Raphael Camara Medeiros [UNIFESP] January 2009 (has links) (PDF)
Submitted by Diogo Misoguti (diogo.misoguti@gmail.com) on 2016-06-27T18:37:18Z No. of bitstreams: 1 cp113168.pdf: 1730163 bytes, checksum: 9813c07327bcd1d8a1abbbdeefaf9a50 (MD5) / Approved for entry into archive by Diogo Misoguti (diogo.misoguti@gmail.com) on 2016-06-27T18:37:56Z (GMT) No. of bitstreams: 1 cp113168.pdf: 1730163 bytes, checksum: 9813c07327bcd1d8a1abbbdeefaf9a50 (MD5) / Made available in DSpace on 2016-06-27T18:37:56Z (GMT). No. of bitstreams: 1 cp113168.pdf: 1730163 bytes, checksum: 9813c07327bcd1d8a1abbbdeefaf9a50 (MD5) Previous issue date: 2009 / Objetivo: Fragmentos ósseos no interior da cavidade uterina são pouco frequentes. A etiologia é desconhecida, mas restos ovulares e metaplasia óssea do endométrio são possibilidades etiológicas. A literatura sugere que aproximadamente 80% são fragmentos ósseos resultantes de abortamento. Este fato é baseado exclusivamente em dados epidemiológicos. Nosso objetivo é analisar esses fragmentos por meio de DNA, elucidando, se a origem é metaplásica, fetal ou de ambos. Métodos: Conduzimos estudo do tipo série de casos englobando 14 pacientes. Inicialmente, foram selecionadas pacientes com diagnóstico histopatológico de osso dentro da cavidade uterina. O DNA foi extraído do sangue e do fragmento ósseo de cada uma das pacientes. Em seis delas, não foi possível a extração de material do ossículo para o mapeamento do DNA e, dessa forma, foram excluídas da pesquisa Os tecidos foram genotipados por meio de reação em cadeia de polimerase (PCR) para locus de DNA. Seis locus mini short tandem repeat, frequentemente utilizados para identificação humana, foram analisados por meio de sequenciamento automático. Resultados: Entre oito pacientes, a análise sanguínea e do fragmento ósseo produziu exatamente o mesmo par de alelos para todos os seis locus. Este achado indicou que o perfil genético é exatamente o mesmo. Conclusão: Nas pacientes pesquisadas, os fragmentos ósseos originaram-se de metaplasia do endométrio, haja vista que o DNA do fragmento e do sangue eram idênticos. Embora todas tivessem história de abortamento prévio, não foi detectada nenhuma diferença no DNA do fragmento uterino como seria o esperado se eles tivessem origem ovular. Este resultado difere da literatura. / Objectives: Bone fragments inside the uterine cavity are uncommon findings in infertile women. The etiology is unknown, but fetal remnants and osseous metaplasia are candidates. The literature suggests that approximately 80% of such cases comprise retained fetal bones based exclusively in abortion history. Our aim was to analyze solitary bone fragments from the uterine cavity, through DNA genotyping, thus elucidating whether they originate from metaplasia or from previous abortion, or both. Methods: We conducted a case series study on 14 patients. The patients selected had histopathological diagnoses of bone fragments inside the uterine cavity, or previously removed samples available for analysis. DNA was extracted from blood and bone fragments. To identify the bone tissue origin, these materials were genotyped using polymerase chain reactions for DNA loci. Six mini short tandem repeat loci frequently used for human tissue identification were analyzed using automated sequencing. Results: Among these eight patients, blood and tissue samples from the same individual produced exactly the same pair of alleles for all six loci. This indicated that the DNA profile was completely the same. Conclusion: In all of the eight cases, bone formation was due to osseous metaplasia, since the DNA in the bone fragment and in the patient’s blood was identical. Although all of the women had histories of previous abortion, no difference in DNA was detected in the bone tissue, in any of the cases, as would be expected if abortion had occurred. This result was completely unexpected, differing from what the literature suggests.

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