Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease
Ano de defesa: | 2014 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal Rural do Rio de Janeiro
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Modelagem Matem?tica e Computacional
|
Departamento: |
Instituto de Ci?ncias Exatas
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://tede.ufrrj.br/jspui/handle/jspui/3338 |
Resumo: | Through the last decade, the Antiretroviral Therapies (ART) reduced the mortality of patients with HIV-1. Nevertheless, this decrease could not completely prevent the emergence of new resistant viral forms, mainly caused by the high mutational rate of HIV-1. The development of resistance of HIV-1 to antiretroviral (ARV) is a limiting factor for the success of ART. Because, in addition to not respond adequately to treatment, patients with resistant virus can transmit these mutant viruses, representing a serious public health problem. Patients with virological failure, usually, require changes to their antiretroviral regimens, thus, techniques that can assist in the prediction of resistance to antiretroviral therapies allow to minimize the gaps and, consequently, prevents the increase of the viral load of patients. In view of these facts, we developed this study with the goal of developing two computational models: one based on ArtMap Neural Networks and other Fuzzy ArtMap Neural Networks. In order to investigate resistance to antiretroviral therapy for HIV-1 protease inhibitors (IPs) for subtypes B and C. To apply the methodology we use the data obtained from the Laboratory of Molecular Virology at Universidade Federal do Rio de Janeiro (UFRJ, Brazil) and a public base courtesy of Stanford University (SU, United States). Prior to divide the test set (30%) and training (70%), was made a preprocessing analyzing the frequency of occurrence of mutations in all positions of the protease. And it was found that some positions had very low mutation rates, which would have significance for the categorization of samples in the general database, and thus, was considered for the model only the positions of a total equal to or greater than 7.5% of mutations. The results were significant in both models, especially in groupings to patients resistant to Lopinavir, Nelfinavir and the non-resistant antiretroviral patients. The results were made using the concept of specificity, sensitivity and accuracy.. |
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Silva, Robson Mariano da785.917.837-00Bernardo, Rafael081.227.117-31Silva, Robson Mariano daOliveira, Francisco Bruno SouzaDelgado, Angel Ramon Sanchez092.938.557-80http://lattes.cnpq.br/6107891122555042Calin, Alessandro dos Santos2020-02-20T14:52:42Z2014-09-25CALIN, Alessandro dos Santos. Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease. 2014. 74 f. Disserta??o (Mestrado em Modelagem Matem?tica e Computacional) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2014.https://tede.ufrrj.br/jspui/handle/jspui/3338Through the last decade, the Antiretroviral Therapies (ART) reduced the mortality of patients with HIV-1. Nevertheless, this decrease could not completely prevent the emergence of new resistant viral forms, mainly caused by the high mutational rate of HIV-1. The development of resistance of HIV-1 to antiretroviral (ARV) is a limiting factor for the success of ART. Because, in addition to not respond adequately to treatment, patients with resistant virus can transmit these mutant viruses, representing a serious public health problem. Patients with virological failure, usually, require changes to their antiretroviral regimens, thus, techniques that can assist in the prediction of resistance to antiretroviral therapies allow to minimize the gaps and, consequently, prevents the increase of the viral load of patients. In view of these facts, we developed this study with the goal of developing two computational models: one based on ArtMap Neural Networks and other Fuzzy ArtMap Neural Networks. In order to investigate resistance to antiretroviral therapy for HIV-1 protease inhibitors (IPs) for subtypes B and C. To apply the methodology we use the data obtained from the Laboratory of Molecular Virology at Universidade Federal do Rio de Janeiro (UFRJ, Brazil) and a public base courtesy of Stanford University (SU, United States). Prior to divide the test set (30%) and training (70%), was made a preprocessing analyzing the frequency of occurrence of mutations in all positions of the protease. And it was found that some positions had very low mutation rates, which would have significance for the categorization of samples in the general database, and thus, was considered for the model only the positions of a total equal to or greater than 7.5% of mutations. The results were significant in both models, especially in groupings to patients resistant to Lopinavir, Nelfinavir and the non-resistant antiretroviral patients. The results were made using the concept of specificity, sensitivity and accuracy..Durante a ?ltima d?cada as Terapias Antirretrovirais (TARV) reduziram a mortalidade em pacientes portadores do HIV-1. No entanto, esta diminui??o n?o conseguiu impedir totalmente o surgimento de novas formas virais resistentes, causadas principalmente pela elevada taxa mutacional do HIV-1. O desenvolvimento de resist?ncia do HIV-1 aos antirretrovirais (ARV) ? um fator limitante para o sucesso da TARV. Pacientes com defici?ncia virol?gica, normalmente, necessitam de altera??es em seus esquemas antirretrovirais, desta forma, t?cnicas que possam apoiar na previs?o de resist?ncia aos ARV possibilitam minimizar as falhas terap?uticas e, em consequ?ncia, evitam o aumento da carga viral dos pacientes. Em virtude desses fatos, desenvolvemos o presente estudo com o objetivo de elaborar dois modelos computacionais: um baseado em Redes Neurais ArtMap e outro em Redes Neurais Fuzzy ArtMap. De modo a investigar a resist?ncia na terapia antirretroviral do HIV-1 aos inibidores de protease (IPs) para os subtipos B e C. Para aplicar a metodologia utilizamos os dados obtidos do Laborat?rio de Virologia Molecular da Universidade Federal do Rio de Janeiro (UFRJ, Brasil) e de uma base p?blica cedida pela Universidade de Stanford (SU, Estados Unidos). Antes de dividirmos o conjunto de teste (30%) e treino (70%), foi feito um pr?-processamento analisando a frequ?ncia da ocorr?ncia de muta??es em todas as posi??es da protease e verificou-se que haviam posi??es com taxas de muta??o muito baixas, as quais n?o teriam relev?ncia para a categoriza??o das amostras presentes na base geral de dados, e assim, foi considerado para o modelo apenas as posi??es com um total igual ou maior que 7,5% de muta??es. Os resultados obtidos foram significativos em ambos os modelos, principalmente nos agrupamentos aos pacientes resistentes ao Lopinavir, ao Nelfinavir e aos pacientes n?o resistentes aos antirretrovirais. A an?lise dos resultados foram feitas usando o conceito de especificidade, sensibilidade e acur?cia.Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2020-02-20T14:52:42Z No. of bitstreams: 1 2014 - Alessandro dos Santos Calin.pdf: 1312024 bytes, checksum: 893c815aa2b44c60eb953c017d1c60e0 (MD5)Made available in DSpace on 2020-02-20T14:52:42Z (GMT). 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dc.title.por.fl_str_mv |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
dc.title.alternative.eng.fl_str_mv |
Model application ARTMAP in the prediction of resistance to HIV-1 protease inhibitors |
title |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
spellingShingle |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease Calin, Alessandro dos Santos HIV-1 Redes Neurais Artificiais (RNAs) Terapia Antirretroviral Artificial Neural Networks (ANN) Antiretroviral Therapy Matem?tica |
title_short |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
title_full |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
title_fullStr |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
title_full_unstemmed |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
title_sort |
Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease |
author |
Calin, Alessandro dos Santos |
author_facet |
Calin, Alessandro dos Santos |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Silva, Robson Mariano da |
dc.contributor.advisor1ID.fl_str_mv |
785.917.837-00 |
dc.contributor.advisor-co1.fl_str_mv |
Bernardo, Rafael |
dc.contributor.advisor-co1ID.fl_str_mv |
081.227.117-31 |
dc.contributor.referee1.fl_str_mv |
Silva, Robson Mariano da |
dc.contributor.referee2.fl_str_mv |
Oliveira, Francisco Bruno Souza |
dc.contributor.referee3.fl_str_mv |
Delgado, Angel Ramon Sanchez |
dc.contributor.authorID.fl_str_mv |
092.938.557-80 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6107891122555042 |
dc.contributor.author.fl_str_mv |
Calin, Alessandro dos Santos |
contributor_str_mv |
Silva, Robson Mariano da Bernardo, Rafael Silva, Robson Mariano da Oliveira, Francisco Bruno Souza Delgado, Angel Ramon Sanchez |
dc.subject.por.fl_str_mv |
HIV-1 Redes Neurais Artificiais (RNAs) Terapia Antirretroviral |
topic |
HIV-1 Redes Neurais Artificiais (RNAs) Terapia Antirretroviral Artificial Neural Networks (ANN) Antiretroviral Therapy Matem?tica |
dc.subject.eng.fl_str_mv |
Artificial Neural Networks (ANN) Antiretroviral Therapy |
dc.subject.cnpq.fl_str_mv |
Matem?tica |
description |
Through the last decade, the Antiretroviral Therapies (ART) reduced the mortality of patients with HIV-1. Nevertheless, this decrease could not completely prevent the emergence of new resistant viral forms, mainly caused by the high mutational rate of HIV-1. The development of resistance of HIV-1 to antiretroviral (ARV) is a limiting factor for the success of ART. Because, in addition to not respond adequately to treatment, patients with resistant virus can transmit these mutant viruses, representing a serious public health problem. Patients with virological failure, usually, require changes to their antiretroviral regimens, thus, techniques that can assist in the prediction of resistance to antiretroviral therapies allow to minimize the gaps and, consequently, prevents the increase of the viral load of patients. In view of these facts, we developed this study with the goal of developing two computational models: one based on ArtMap Neural Networks and other Fuzzy ArtMap Neural Networks. In order to investigate resistance to antiretroviral therapy for HIV-1 protease inhibitors (IPs) for subtypes B and C. To apply the methodology we use the data obtained from the Laboratory of Molecular Virology at Universidade Federal do Rio de Janeiro (UFRJ, Brazil) and a public base courtesy of Stanford University (SU, United States). Prior to divide the test set (30%) and training (70%), was made a preprocessing analyzing the frequency of occurrence of mutations in all positions of the protease. And it was found that some positions had very low mutation rates, which would have significance for the categorization of samples in the general database, and thus, was considered for the model only the positions of a total equal to or greater than 7.5% of mutations. The results were significant in both models, especially in groupings to patients resistant to Lopinavir, Nelfinavir and the non-resistant antiretroviral patients. The results were made using the concept of specificity, sensitivity and accuracy.. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-09-25 |
dc.date.accessioned.fl_str_mv |
2020-02-20T14:52:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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dc.identifier.citation.fl_str_mv |
CALIN, Alessandro dos Santos. Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease. 2014. 74 f. Disserta??o (Mestrado em Modelagem Matem?tica e Computacional) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2014. |
dc.identifier.uri.fl_str_mv |
https://tede.ufrrj.br/jspui/handle/jspui/3338 |
identifier_str_mv |
CALIN, Alessandro dos Santos. Aplica??o de modelos ARTMAP na predi??o de resist?ncia do HIV-1 aos Inibidores de protease. 2014. 74 f. Disserta??o (Mestrado em Modelagem Matem?tica e Computacional) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 2014. |
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https://tede.ufrrj.br/jspui/handle/jspui/3338 |
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por |
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Universidade Federal Rural do Rio de Janeiro |
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Programa de P?s-Gradua??o em Modelagem Matem?tica e Computacional |
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UFRRJ |
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Brasil |
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Instituto de Ci?ncias Exatas |
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Universidade Federal Rural do Rio de Janeiro |
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