Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/13318 |
Resumo: | Hematopoietic tumors are the most common neoplastic disorders in felines. Many of these tumors are associated with infection by feline leukemia virus (FeLV) and one of the described mechanisms is the integration of viral material into the feline genome, which can lead to genomic instability and consequent alteration of genes related to proliferation control and cell death. When larger DNA fragments are affected, such changes can be observed by cytogenetic analysis. The present study aimed to observe cytogenetic changes in felines with hematopoietic neoplasms. The study was performed in eight felines, seven of them with a diagnosis of leukemia or lymphoma. The control consisted of a healthy feline FeLV negative with normal karyotype. At least 10 metaphases of each animal were analyzed. Additionally, 1000 lymphocytes of these two patients, were analyzed and classified cytologically by their viability (necrosis, apoptosis), mitotic state (mononuclear, binucleate (BN), mitotic multinucleate) and their chromosomal damage or instability state (presence of micronucleus (MN) in mononuclear, binucleate, as well as nuclear buds (NBUD). The results of this observation were statistically analyzed by the Wilcoxon paired test. In this chromosomal analysis two of these animals presented monosomy of the E3 chromosome, one with diagnosis of acute myeloid leukemia of the M6a (LMA-M6a) FAB subtype and another with multicenter lymphoma (LM). There were significant differences in LMA-M6a scores (N = 7, Z = 2.36, p = 0.01) and LM scores (N = 8, Z = 2.52, p = 0.01) when group control. However, there was no difference between AML and lymphoma (N = 8, Z = 0.07, p = 0.94). The E3 chromosome has 1401 genes, several related to cell cycle control (Plk1, Sun, Mad1l1, Mcm7), DNA repair (Pms2, Usp42), tumor suppression (Bcl7b). The loss of DNA fragments, such as the loss of the E3 chromosome in the two patients described, led to the haploinsufficiency of important genes for the cell cycle, and this could be a cause of genomic instability and consequently susceptibility to the development of cancer. The observation of cytogenetic alterations, in this way, allows a better understanding of the cancer in the feline species and translational research. |
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Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticasE3 chromosome monosomy in FeLV positive felines with hematopoietic neoplasmsCromossomo felino E3Instabilidade genômicaReparo de DNAFeLVGenes supressores tumoraisFeline chromosome E3Genomic instabilityDNA repairFeLVTumor suppressor genesCNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIAHematopoietic tumors are the most common neoplastic disorders in felines. Many of these tumors are associated with infection by feline leukemia virus (FeLV) and one of the described mechanisms is the integration of viral material into the feline genome, which can lead to genomic instability and consequent alteration of genes related to proliferation control and cell death. When larger DNA fragments are affected, such changes can be observed by cytogenetic analysis. The present study aimed to observe cytogenetic changes in felines with hematopoietic neoplasms. The study was performed in eight felines, seven of them with a diagnosis of leukemia or lymphoma. The control consisted of a healthy feline FeLV negative with normal karyotype. At least 10 metaphases of each animal were analyzed. Additionally, 1000 lymphocytes of these two patients, were analyzed and classified cytologically by their viability (necrosis, apoptosis), mitotic state (mononuclear, binucleate (BN), mitotic multinucleate) and their chromosomal damage or instability state (presence of micronucleus (MN) in mononuclear, binucleate, as well as nuclear buds (NBUD). The results of this observation were statistically analyzed by the Wilcoxon paired test. In this chromosomal analysis two of these animals presented monosomy of the E3 chromosome, one with diagnosis of acute myeloid leukemia of the M6a (LMA-M6a) FAB subtype and another with multicenter lymphoma (LM). There were significant differences in LMA-M6a scores (N = 7, Z = 2.36, p = 0.01) and LM scores (N = 8, Z = 2.52, p = 0.01) when group control. However, there was no difference between AML and lymphoma (N = 8, Z = 0.07, p = 0.94). The E3 chromosome has 1401 genes, several related to cell cycle control (Plk1, Sun, Mad1l1, Mcm7), DNA repair (Pms2, Usp42), tumor suppression (Bcl7b). The loss of DNA fragments, such as the loss of the E3 chromosome in the two patients described, led to the haploinsufficiency of important genes for the cell cycle, and this could be a cause of genomic instability and consequently susceptibility to the development of cancer. The observation of cytogenetic alterations, in this way, allows a better understanding of the cancer in the feline species and translational research.Os tumores hematopoiéticos são os distúrbios neoplásicos mais comuns em felinos. Muitos desses tumores estão associados à infecção pelo vírus da leucemia felina (FeLV) e um dos mecanismos descritos é pela integração de material viral no genoma felino, que pode levar à instabilidade genômica e consequente alteração de genes relacionados com o controle da proliferação e morte celular. Quando fragmentos maiores de DNA são afetados, tais alterações podem ser observadas pela análise citogenética. O presente estudo objetivou observar as alterações citogenéticas em felinos com neoplasias hematopoiéticas. O estudo foi realizado em oito felinos, sete destes com diagnóstico de leucemia ou linfoma. O controle foi constituído por um felino saudável FeLV negativo com cariótipo normal. Foram analisadas no mínimo 10 metáfases de cada animal. Adicionalmente, destes dois pacientes foram analisados 1.000 linfócitos e classificados citologicamente pelo seu estado de viabilidade (necrose, apoptose), seu estado mitótico (mononucleado, binucleado (BN), multinucleado, mitótico) e seu dano cromossômico ou estado de instabilidade (presença de micronúcleo (MN) em célula mononucleada, binucleada, bem como brotos nucleares (NBUD). Os resultados dessa observação foram analisados estatisticamente pelo teste pareado de Wilcoxon. Nesta análise cromossômica dois destes animais apresentaram monossomia do cromossomo E3, um com diagnóstico de leucemia mieloide aguda do subtipo FAB M6a (LMA-M6a) e outro com linfoma multicêntrico (LM). Houve diferença significativa nas contagens de LMA-M6a (N=7; Z=2,36; p=0,01) e de LM (N=8; Z=2,52; p=0,01) quando comparados com o grupo controle. No entanto, não houve diferença entre LMA e linfoma (N=8; Z=0,07; p=0,94). No cromossomo E3 são descritos 1401 genes, sendo vários relacionados com controle de ciclo celular, (Plk1, Sun, Mad1l1, Mcm7), reparo de DNA (Pms2, Usp42) e supressão tumoral (Bcl7b).A perda de fragmentos de DNA, como o cromossomo E3 nos dois pacientes descritos, que leva a haploinsuficiência de genes importantes para o ciclo celular, poderia ser a causa de instabilidade genômica e, consequentemente suscetibilidade ao desenvolvimento do câncer. A observação de alterações citogenéticas, dessa forma, possibilita o melhor entendimento do câncer na espécie felina e serve como subsídio para a pesquisa translacional.Universidade Federal de Santa MariaBrasilMedicina VeterináriaUFSMPrograma de Pós-Graduação em Medicina VeterináriaCentro de Ciências RuraisKrause, Alexandrehttp://lattes.cnpq.br/7760558908777387Schuch, Natielen Jacqueshttp://lattes.cnpq.br/0755719556321660Santos, Maurício Beux doshttp://lattes.cnpq.br/9085356587543954Centenaro, Vanessa Bridi2018-06-06T21:20:50Z2018-06-06T21:20:50Z2017-09-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://repositorio.ufsm.br/handle/1/13318porAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2018-06-12T21:55:19Zoai:repositorio.ufsm.br:1/13318Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2018-06-12T21:55:19Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas E3 chromosome monosomy in FeLV positive felines with hematopoietic neoplasms |
title |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
spellingShingle |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas Centenaro, Vanessa Bridi Cromossomo felino E3 Instabilidade genômica Reparo de DNA FeLV Genes supressores tumorais Feline chromosome E3 Genomic instability DNA repair FeLV Tumor suppressor genes CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
title_short |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
title_full |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
title_fullStr |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
title_full_unstemmed |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
title_sort |
Monossomia do cromossomo E3 em felinos FeLV positivos com neoplasias hematopoiéticas |
author |
Centenaro, Vanessa Bridi |
author_facet |
Centenaro, Vanessa Bridi |
author_role |
author |
dc.contributor.none.fl_str_mv |
Krause, Alexandre http://lattes.cnpq.br/7760558908777387 Schuch, Natielen Jacques http://lattes.cnpq.br/0755719556321660 Santos, Maurício Beux dos http://lattes.cnpq.br/9085356587543954 |
dc.contributor.author.fl_str_mv |
Centenaro, Vanessa Bridi |
dc.subject.por.fl_str_mv |
Cromossomo felino E3 Instabilidade genômica Reparo de DNA FeLV Genes supressores tumorais Feline chromosome E3 Genomic instability DNA repair FeLV Tumor suppressor genes CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
topic |
Cromossomo felino E3 Instabilidade genômica Reparo de DNA FeLV Genes supressores tumorais Feline chromosome E3 Genomic instability DNA repair FeLV Tumor suppressor genes CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
description |
Hematopoietic tumors are the most common neoplastic disorders in felines. Many of these tumors are associated with infection by feline leukemia virus (FeLV) and one of the described mechanisms is the integration of viral material into the feline genome, which can lead to genomic instability and consequent alteration of genes related to proliferation control and cell death. When larger DNA fragments are affected, such changes can be observed by cytogenetic analysis. The present study aimed to observe cytogenetic changes in felines with hematopoietic neoplasms. The study was performed in eight felines, seven of them with a diagnosis of leukemia or lymphoma. The control consisted of a healthy feline FeLV negative with normal karyotype. At least 10 metaphases of each animal were analyzed. Additionally, 1000 lymphocytes of these two patients, were analyzed and classified cytologically by their viability (necrosis, apoptosis), mitotic state (mononuclear, binucleate (BN), mitotic multinucleate) and their chromosomal damage or instability state (presence of micronucleus (MN) in mononuclear, binucleate, as well as nuclear buds (NBUD). The results of this observation were statistically analyzed by the Wilcoxon paired test. In this chromosomal analysis two of these animals presented monosomy of the E3 chromosome, one with diagnosis of acute myeloid leukemia of the M6a (LMA-M6a) FAB subtype and another with multicenter lymphoma (LM). There were significant differences in LMA-M6a scores (N = 7, Z = 2.36, p = 0.01) and LM scores (N = 8, Z = 2.52, p = 0.01) when group control. However, there was no difference between AML and lymphoma (N = 8, Z = 0.07, p = 0.94). The E3 chromosome has 1401 genes, several related to cell cycle control (Plk1, Sun, Mad1l1, Mcm7), DNA repair (Pms2, Usp42), tumor suppression (Bcl7b). The loss of DNA fragments, such as the loss of the E3 chromosome in the two patients described, led to the haploinsufficiency of important genes for the cell cycle, and this could be a cause of genomic instability and consequently susceptibility to the development of cancer. The observation of cytogenetic alterations, in this way, allows a better understanding of the cancer in the feline species and translational research. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-06 2018-06-06T21:20:50Z 2018-06-06T21:20:50Z |
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://repositorio.ufsm.br/handle/1/13318 |
url |
http://repositorio.ufsm.br/handle/1/13318 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Brasil Medicina Veterinária UFSM Programa de Pós-Graduação em Medicina Veterinária Centro de Ciências Rurais |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Brasil Medicina Veterinária UFSM Programa de Pós-Graduação em Medicina Veterinária Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
_version_ |
1805922125431701504 |