Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia

Detalhes bibliográficos
Autor(a) principal: Luana Leticia Alves Dutra
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15477
Resumo: Acute lymphoblastic leukemia (ALL) is the most common malignancy of childhood. It is a hematologic malignant neoplasm derived from undifferentiated young lymphoid lineage cells that accumulate and replace the normal population of blood cells. The Aurora kinase genes A, B and C are involved in cell cycle and encode proteins of great importance in the regulation of the mitosis process - separation of sister chromatids during metaphase / anaphase. The aim of this study was to evaluate the AURKA and AURKB genes in pediatric patients with ALL-B treated at Hospital Infantil Albert Sabin (HIAS). This was a cross-sectional, observational and analytical study and 30 patients were enrolled. The sex, age, and laboratory data profile were obtained from medical records of patients diagnosed at HIAS. The analysis of mutations in AURKA and AURKB genes was performed by the fluorescence in situ hybridization technique (FISH) using probes specific for each gene. Statistical analysis was performed using GraphPad Prism 5 and used 5% significance level for all tests. Of all children 53.33% were male and 46.67% female, with age ranging from 1 to 16, and average of 7.1 years. Using the FAB classification, 86.67% of patients had ALL-L1 and 13.33% had ALL-L2. According to the EGIL classification, 33.33% were pre-B ALL and 66.67% were common ALL. The mean hemoglobin levels, hematocrit, white blood cells and platelet counts were, respectively, 7.50 g/dL, 22.80%, 69.494/mm3 and 56.439,64/mm3. 73.33% of the children studied had some type of numerical or structural karyotipic abnormality. Regarding the risk classification, 26.67% were favorable, 40% intermediate and 33.33% unfavorable risk. Patients with unfavorable karyotype had a higher white blood cell count (p = 0.0025), and the analysis of other parameters was not significant. Monosomy and polysomy of AURKA gene and polysomy of AURKB gene were observed. Some kind karyotypic change was observed in approximately 50% of cases, the more frequent change was in AURKB. Most patients with abnormal AURKB gene presented a favorable karyotype, and white blood cell and platelet counts less altered. The study of AURKA and AURKB genes showed that these genes may be markers of genomic instability and that AURKB seems more involved in the pathogenesis of childhood ALL, being also a good prognostic factor.
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spelling info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisEvaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemiaAvaliaÃÃo dos genes aurka e aurkb em pacientes pediÃtricos portadores de leucemia linfÃide aguda2015-02-11RomÃlia Pinheiro GonÃalves Lemes28620062387http://lattes.cnpq.br/8202510508068072Selma Lessa de Castro11740060011http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4137877D0#DadospessoaisFabÃola Fernandes Heredia85700614391http://lattes.cnpq.br/4953653032759739Manoel Ricardo Alves Martins48034622320http://lattes.cnpq.br/350311735119784602173681311http://lattes.cnpq.br/0623158234692470Luana Leticia Alves DutraUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em PatologiaUFCBRANATOMIA PATOLOGICA E PATOLOGIA CLINICAAcute lymphoblastic leukemia (ALL) is the most common malignancy of childhood. It is a hematologic malignant neoplasm derived from undifferentiated young lymphoid lineage cells that accumulate and replace the normal population of blood cells. The Aurora kinase genes A, B and C are involved in cell cycle and encode proteins of great importance in the regulation of the mitosis process - separation of sister chromatids during metaphase / anaphase. The aim of this study was to evaluate the AURKA and AURKB genes in pediatric patients with ALL-B treated at Hospital Infantil Albert Sabin (HIAS). This was a cross-sectional, observational and analytical study and 30 patients were enrolled. The sex, age, and laboratory data profile were obtained from medical records of patients diagnosed at HIAS. The analysis of mutations in AURKA and AURKB genes was performed by the fluorescence in situ hybridization technique (FISH) using probes specific for each gene. Statistical analysis was performed using GraphPad Prism 5 and used 5% significance level for all tests. Of all children 53.33% were male and 46.67% female, with age ranging from 1 to 16, and average of 7.1 years. Using the FAB classification, 86.67% of patients had ALL-L1 and 13.33% had ALL-L2. According to the EGIL classification, 33.33% were pre-B ALL and 66.67% were common ALL. The mean hemoglobin levels, hematocrit, white blood cells and platelet counts were, respectively, 7.50 g/dL, 22.80%, 69.494/mm3 and 56.439,64/mm3. 73.33% of the children studied had some type of numerical or structural karyotipic abnormality. Regarding the risk classification, 26.67% were favorable, 40% intermediate and 33.33% unfavorable risk. Patients with unfavorable karyotype had a higher white blood cell count (p = 0.0025), and the analysis of other parameters was not significant. Monosomy and polysomy of AURKA gene and polysomy of AURKB gene were observed. Some kind karyotypic change was observed in approximately 50% of cases, the more frequent change was in AURKB. Most patients with abnormal AURKB gene presented a favorable karyotype, and white blood cell and platelet counts less altered. The study of AURKA and AURKB genes showed that these genes may be markers of genomic instability and that AURKB seems more involved in the pathogenesis of childhood ALL, being also a good prognostic factor.A leucemia linfÃide aguda (LLA) à a neoplasia mais frequente na infÃncia. à uma neoplasia hematolÃgica maligna derivada de cÃlulas linfocitÃrias indiferenciadas com acÃmulo de cÃlulas jovens e substituiÃÃo da populaÃÃo normal de cÃlulas sanguÃneas. Os genes Aurora quinase A, B e C estÃo envolvidos no ciclo celular e codificam proteÃnas de grande importÃncia na regulaÃÃo do processo de mitose - separaÃÃo das cromÃtides irmÃs durante a metÃfase/anÃfase. O objetivo desse estudo foi avaliar os genes AURKA e AURKB em pacientes pediÃtricos portadores de LLA-B tratados no Hospital Infantil Albert Sabin (HIAS). Tratou-se de um estudo transversal, observacional e analÃtico. A amostra utilizada no estudo foi de 30 pacientes. O perfil de sexo, idade e dados laboratoriais foi obtido em prontuÃrios dos pacientes e no serviÃo de diagnÃstico do HIAS. A anÃlise de mutaÃÃes nos genes AURKA e AURKB foi pela tÃcnica de FluorescÃncia por HibridizaÃÃo in Situ (FISH), com o uso de sondas especÃficas para cada gene. A anÃlises estatÃstica foi realizada no GraphPad Prism 5 e teve nÃvel de significÃncia de 5% para todos os testes. Do total de crianÃas 53,33% foram do sexo masculino e 46,67% do sexo feminino, com faixa de idade variando de 1 a 16 anos, e mÃdia de 7,1 anos. Quanto a classificaÃÃo FAB, 86,67% dos pacientes eram portadores de LLA-L1 e 13,33% de LLA-L2. Na classificaÃÃo EGIL, 33,33% eram LLA prÃ-B e 66,67% eram LLA-comum. Os valores mÃdios de hemoglobina, hematÃcrito, leucÃcitos e plaquetas foram, respectivamente, 7,50 g/dL, 22,80%, 69.494/mm3 e 56.439,64/mm3. O cariÃtipo de 73,33% das crianÃas estudadas apresentou algum tipo de alteraÃÃo numÃrica ou estrutural. Em relaÃÃo à classificaÃÃo de risco, 26,67% foram favorÃveis, 40% intermediÃrios e 33,33% desfavorÃveis. Na relaÃÃo entre parÃmetros hematolÃgicos e classificaÃÃo de risco, pacientes com cariÃtipo desfavorÃvel apresentaram leucometria mais elevada (p=0,0025), as anÃlises com os outros parÃmetros nÃo foram significantes. No estudo de AURKA e AURKB foi possÃvel observar monossomia e polissomia do gene AURKA e polissomia do gene AURKB. Dos pacientes com algum tipo de alteraÃÃo no cariÃtipo, foi observada alteraÃÃo em algum dos genes em aproximadamente 50% dos casos, sendo a alteraÃÃo no AURKB mais frequente. A maioria dos pacientes com alteraÃÃo no gene AURKB apresentou cariÃtipo favorÃvel, assim como leucometria e contagem de plaquetas menos alteradas. O estudo dos genes AURKA e AURKB mostrou que esses genes podem ser iniciadores no processo de instabilidade genÃmica das cÃlulas leucÃmicas e que a AURKB parece estar mais envolvida na patogÃnese da LLA infantil, assim como fator de bom prognÃstico.Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgicohttp://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15477application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:28:43Zmail@mail.com -
dc.title.en.fl_str_mv Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
dc.title.alternative.pt.fl_str_mv AvaliaÃÃo dos genes aurka e aurkb em pacientes pediÃtricos portadores de leucemia linfÃide aguda
title Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
spellingShingle Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
Luana Leticia Alves Dutra
ANATOMIA PATOLOGICA E PATOLOGIA CLINICA
title_short Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
title_full Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
title_fullStr Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
title_full_unstemmed Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
title_sort Evaluation of genes aurka and aurkb in pediatric patients with acute lymphoblastic leukemia
author Luana Leticia Alves Dutra
author_facet Luana Leticia Alves Dutra
author_role author
dc.contributor.advisor1.fl_str_mv RomÃlia Pinheiro GonÃalves Lemes
dc.contributor.advisor1ID.fl_str_mv 28620062387
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/8202510508068072
dc.contributor.referee1.fl_str_mv Selma Lessa de Castro
dc.contributor.referee1ID.fl_str_mv 11740060011
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4137877D0#Dadospessoais
dc.contributor.referee2.fl_str_mv FabÃola Fernandes Heredia
dc.contributor.referee2ID.fl_str_mv 85700614391
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/4953653032759739
dc.contributor.referee3.fl_str_mv Manoel Ricardo Alves Martins
dc.contributor.referee3ID.fl_str_mv 48034622320
dc.contributor.referee3Lattes.fl_str_mv http://lattes.cnpq.br/3503117351197846
dc.contributor.authorID.fl_str_mv 02173681311
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/0623158234692470
dc.contributor.author.fl_str_mv Luana Leticia Alves Dutra
contributor_str_mv RomÃlia Pinheiro GonÃalves Lemes
Selma Lessa de Castro
FabÃola Fernandes Heredia
Manoel Ricardo Alves Martins
dc.subject.cnpq.fl_str_mv ANATOMIA PATOLOGICA E PATOLOGIA CLINICA
topic ANATOMIA PATOLOGICA E PATOLOGIA CLINICA
dc.description.sponsorship.fl_txt_mv Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
dc.description.abstract.por.fl_txt_mv Acute lymphoblastic leukemia (ALL) is the most common malignancy of childhood. It is a hematologic malignant neoplasm derived from undifferentiated young lymphoid lineage cells that accumulate and replace the normal population of blood cells. The Aurora kinase genes A, B and C are involved in cell cycle and encode proteins of great importance in the regulation of the mitosis process - separation of sister chromatids during metaphase / anaphase. The aim of this study was to evaluate the AURKA and AURKB genes in pediatric patients with ALL-B treated at Hospital Infantil Albert Sabin (HIAS). This was a cross-sectional, observational and analytical study and 30 patients were enrolled. The sex, age, and laboratory data profile were obtained from medical records of patients diagnosed at HIAS. The analysis of mutations in AURKA and AURKB genes was performed by the fluorescence in situ hybridization technique (FISH) using probes specific for each gene. Statistical analysis was performed using GraphPad Prism 5 and used 5% significance level for all tests. Of all children 53.33% were male and 46.67% female, with age ranging from 1 to 16, and average of 7.1 years. Using the FAB classification, 86.67% of patients had ALL-L1 and 13.33% had ALL-L2. According to the EGIL classification, 33.33% were pre-B ALL and 66.67% were common ALL. The mean hemoglobin levels, hematocrit, white blood cells and platelet counts were, respectively, 7.50 g/dL, 22.80%, 69.494/mm3 and 56.439,64/mm3. 73.33% of the children studied had some type of numerical or structural karyotipic abnormality. Regarding the risk classification, 26.67% were favorable, 40% intermediate and 33.33% unfavorable risk. Patients with unfavorable karyotype had a higher white blood cell count (p = 0.0025), and the analysis of other parameters was not significant. Monosomy and polysomy of AURKA gene and polysomy of AURKB gene were observed. Some kind karyotypic change was observed in approximately 50% of cases, the more frequent change was in AURKB. Most patients with abnormal AURKB gene presented a favorable karyotype, and white blood cell and platelet counts less altered. The study of AURKA and AURKB genes showed that these genes may be markers of genomic instability and that AURKB seems more involved in the pathogenesis of childhood ALL, being also a good prognostic factor.
A leucemia linfÃide aguda (LLA) à a neoplasia mais frequente na infÃncia. à uma neoplasia hematolÃgica maligna derivada de cÃlulas linfocitÃrias indiferenciadas com acÃmulo de cÃlulas jovens e substituiÃÃo da populaÃÃo normal de cÃlulas sanguÃneas. Os genes Aurora quinase A, B e C estÃo envolvidos no ciclo celular e codificam proteÃnas de grande importÃncia na regulaÃÃo do processo de mitose - separaÃÃo das cromÃtides irmÃs durante a metÃfase/anÃfase. O objetivo desse estudo foi avaliar os genes AURKA e AURKB em pacientes pediÃtricos portadores de LLA-B tratados no Hospital Infantil Albert Sabin (HIAS). Tratou-se de um estudo transversal, observacional e analÃtico. A amostra utilizada no estudo foi de 30 pacientes. O perfil de sexo, idade e dados laboratoriais foi obtido em prontuÃrios dos pacientes e no serviÃo de diagnÃstico do HIAS. A anÃlise de mutaÃÃes nos genes AURKA e AURKB foi pela tÃcnica de FluorescÃncia por HibridizaÃÃo in Situ (FISH), com o uso de sondas especÃficas para cada gene. A anÃlises estatÃstica foi realizada no GraphPad Prism 5 e teve nÃvel de significÃncia de 5% para todos os testes. Do total de crianÃas 53,33% foram do sexo masculino e 46,67% do sexo feminino, com faixa de idade variando de 1 a 16 anos, e mÃdia de 7,1 anos. Quanto a classificaÃÃo FAB, 86,67% dos pacientes eram portadores de LLA-L1 e 13,33% de LLA-L2. Na classificaÃÃo EGIL, 33,33% eram LLA prÃ-B e 66,67% eram LLA-comum. Os valores mÃdios de hemoglobina, hematÃcrito, leucÃcitos e plaquetas foram, respectivamente, 7,50 g/dL, 22,80%, 69.494/mm3 e 56.439,64/mm3. O cariÃtipo de 73,33% das crianÃas estudadas apresentou algum tipo de alteraÃÃo numÃrica ou estrutural. Em relaÃÃo à classificaÃÃo de risco, 26,67% foram favorÃveis, 40% intermediÃrios e 33,33% desfavorÃveis. Na relaÃÃo entre parÃmetros hematolÃgicos e classificaÃÃo de risco, pacientes com cariÃtipo desfavorÃvel apresentaram leucometria mais elevada (p=0,0025), as anÃlises com os outros parÃmetros nÃo foram significantes. No estudo de AURKA e AURKB foi possÃvel observar monossomia e polissomia do gene AURKA e polissomia do gene AURKB. Dos pacientes com algum tipo de alteraÃÃo no cariÃtipo, foi observada alteraÃÃo em algum dos genes em aproximadamente 50% dos casos, sendo a alteraÃÃo no AURKB mais frequente. A maioria dos pacientes com alteraÃÃo no gene AURKB apresentou cariÃtipo favorÃvel, assim como leucometria e contagem de plaquetas menos alteradas. O estudo dos genes AURKA e AURKB mostrou que esses genes podem ser iniciadores no processo de instabilidade genÃmica das cÃlulas leucÃmicas e que a AURKB parece estar mais envolvida na patogÃnese da LLA infantil, assim como fator de bom prognÃstico.
description Acute lymphoblastic leukemia (ALL) is the most common malignancy of childhood. It is a hematologic malignant neoplasm derived from undifferentiated young lymphoid lineage cells that accumulate and replace the normal population of blood cells. The Aurora kinase genes A, B and C are involved in cell cycle and encode proteins of great importance in the regulation of the mitosis process - separation of sister chromatids during metaphase / anaphase. The aim of this study was to evaluate the AURKA and AURKB genes in pediatric patients with ALL-B treated at Hospital Infantil Albert Sabin (HIAS). This was a cross-sectional, observational and analytical study and 30 patients were enrolled. The sex, age, and laboratory data profile were obtained from medical records of patients diagnosed at HIAS. The analysis of mutations in AURKA and AURKB genes was performed by the fluorescence in situ hybridization technique (FISH) using probes specific for each gene. Statistical analysis was performed using GraphPad Prism 5 and used 5% significance level for all tests. Of all children 53.33% were male and 46.67% female, with age ranging from 1 to 16, and average of 7.1 years. Using the FAB classification, 86.67% of patients had ALL-L1 and 13.33% had ALL-L2. According to the EGIL classification, 33.33% were pre-B ALL and 66.67% were common ALL. The mean hemoglobin levels, hematocrit, white blood cells and platelet counts were, respectively, 7.50 g/dL, 22.80%, 69.494/mm3 and 56.439,64/mm3. 73.33% of the children studied had some type of numerical or structural karyotipic abnormality. Regarding the risk classification, 26.67% were favorable, 40% intermediate and 33.33% unfavorable risk. Patients with unfavorable karyotype had a higher white blood cell count (p = 0.0025), and the analysis of other parameters was not significant. Monosomy and polysomy of AURKA gene and polysomy of AURKB gene were observed. Some kind karyotypic change was observed in approximately 50% of cases, the more frequent change was in AURKB. Most patients with abnormal AURKB gene presented a favorable karyotype, and white blood cell and platelet counts less altered. The study of AURKA and AURKB genes showed that these genes may be markers of genomic instability and that AURKB seems more involved in the pathogenesis of childhood ALL, being also a good prognostic factor.
publishDate 2015
dc.date.issued.fl_str_mv 2015-02-11
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