Assessement of postmortem intervals using DNA methylation
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/27767 |
Resumo: | Estimation of a corpse’s time of death is an absolute crucial part of many forensic cases. An accurate time placement in a case’s sequence of events is information that can create a suspect list or exempt suspects from it, deeply altering an entire case. Currently, postmortem intervals and time of death is assessed through several physical, metabolic and physiochemical evaluations during autopsy. These evaluations carry strengths, weaknesses and variations, and a more stable and robust procedure would be invaluable to the advancement of forensic sciences. One of the most recent focus for such a possible procedure relies in one of the epigenetic regulations of DNA, the addition of a methyl group to certain cytosines, known as DNA methylation. DNA methylation regulates many aspects of the genome, from silencing tissue specific genes, non-coding sections of DNA, up to tissue specialization and working as a stable long-term response to the environment. This work is a review on procedures, potential biomarkers, possible viability and obstacles in the way of using this regulatory modification of the considerably stable port-mortem DNA |
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Assessement of postmortem intervals using DNA methylationPostmortem intervalsDNA methylation analysisForensic epigeneticsEstimation of a corpse’s time of death is an absolute crucial part of many forensic cases. An accurate time placement in a case’s sequence of events is information that can create a suspect list or exempt suspects from it, deeply altering an entire case. Currently, postmortem intervals and time of death is assessed through several physical, metabolic and physiochemical evaluations during autopsy. These evaluations carry strengths, weaknesses and variations, and a more stable and robust procedure would be invaluable to the advancement of forensic sciences. One of the most recent focus for such a possible procedure relies in one of the epigenetic regulations of DNA, the addition of a methyl group to certain cytosines, known as DNA methylation. DNA methylation regulates many aspects of the genome, from silencing tissue specific genes, non-coding sections of DNA, up to tissue specialization and working as a stable long-term response to the environment. This work is a review on procedures, potential biomarkers, possible viability and obstacles in the way of using this regulatory modification of the considerably stable port-mortem DNAA estimativa do tempo de morte de um cadáver é uma parte absolutamente crucial de muitos casos forense. Um posicionamento preciso no tempo na sequência de eventos de um caso é uma informação que pode criar uma lista de suspeitos ou isentar suspeitos, alterando profundamente um caso inteiro. Atualmente, o intervalo postmortem e a hora da morte são avaliados por meio de várias avaliações físicas, metabólicas e físico-químicas durante a autópsia. Essas avaliações trazem pontos fortes, fracos e variações, e um procedimento mais estável e robusto seria inestimável para o avanço das ciências forenses. Um dos focos mais recentes para esse possível procedimento baseia-se numa das regulações epigenéticas do DNA, a adição de um grupo metilo a certas citosinas, conhecido como metilação do DNA. A metilação do DNA regula muitos aspetos do genoma, desde o silenciamento de genes expressos só em alguns tecidos, seções não codificantes do DNA, até a especialização de tecidos e uma resposta estável a longo prazo a estímulos do ambiente. Este trabalho é uma revisão sobre procedimentos, possíveis biomarcadores, possíveis variáveis e obstáculos no uso desta modificação regulatória do consideravelmente estável postmortem DNA2020-03-03T11:42:30Z2019-12-03T00:00:00Z2019-12-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/27767engPereira, João Leonardo Azevedo Meirelesinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:53:55Zoai:ria.ua.pt:10773/27767Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:00:30.784051Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Assessement of postmortem intervals using DNA methylation |
title |
Assessement of postmortem intervals using DNA methylation |
spellingShingle |
Assessement of postmortem intervals using DNA methylation Pereira, João Leonardo Azevedo Meireles Postmortem intervals DNA methylation analysis Forensic epigenetics |
title_short |
Assessement of postmortem intervals using DNA methylation |
title_full |
Assessement of postmortem intervals using DNA methylation |
title_fullStr |
Assessement of postmortem intervals using DNA methylation |
title_full_unstemmed |
Assessement of postmortem intervals using DNA methylation |
title_sort |
Assessement of postmortem intervals using DNA methylation |
author |
Pereira, João Leonardo Azevedo Meireles |
author_facet |
Pereira, João Leonardo Azevedo Meireles |
author_role |
author |
dc.contributor.author.fl_str_mv |
Pereira, João Leonardo Azevedo Meireles |
dc.subject.por.fl_str_mv |
Postmortem intervals DNA methylation analysis Forensic epigenetics |
topic |
Postmortem intervals DNA methylation analysis Forensic epigenetics |
description |
Estimation of a corpse’s time of death is an absolute crucial part of many forensic cases. An accurate time placement in a case’s sequence of events is information that can create a suspect list or exempt suspects from it, deeply altering an entire case. Currently, postmortem intervals and time of death is assessed through several physical, metabolic and physiochemical evaluations during autopsy. These evaluations carry strengths, weaknesses and variations, and a more stable and robust procedure would be invaluable to the advancement of forensic sciences. One of the most recent focus for such a possible procedure relies in one of the epigenetic regulations of DNA, the addition of a methyl group to certain cytosines, known as DNA methylation. DNA methylation regulates many aspects of the genome, from silencing tissue specific genes, non-coding sections of DNA, up to tissue specialization and working as a stable long-term response to the environment. This work is a review on procedures, potential biomarkers, possible viability and obstacles in the way of using this regulatory modification of the considerably stable port-mortem DNA |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-03T00:00:00Z 2019-12-03 2020-03-03T11:42:30Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/27767 |
url |
http://hdl.handle.net/10773/27767 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137660463218688 |