Caracterização proteômica urinária de cães sadios e com diferentes estágios da doença renal crônica
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Universidade Federal de Viçosa
Abstract
A doença renal crônica (DRC) é uma doença comum, progressiva e irreversível em cães. A inflamação e a proteinúria estão relacionadas ao processo de progressão da DRC. A realização de estudos na busca por marcadores precoces e indicadores de grau e local de inflamação renal, a fim de auxiliar no diagnóstico e prognóstico é de extrema relevância. Foram utilizadas 22 amostras de caninos com raça, idade e sexo aleatórios, portadores de DRC em diferentes estadiamentos e 5 animais hígidos, para avaliar o perfil de proteínas da urina por nano LC- MS/MS. Os animais foram divididos em cinco grupos experimentais: grupo C (GC) composto por animais hígidos (controle); grupo 1 (G1) composto por animais com DRC estágio I; grupo 2 (G2), composto por animais com DRC estágio II; grupo 3 (G3), composto por animais com DRC estágio III; e grupo 4 (G4), composto por animais com DRC estágio IV. Os objetivos deste estudo foram compreender a caracterização do perfil de proteínas urinárias em cães considerando o grau de acometimento renal, por meio da realização de uma revisão sistemática sobre o assunto e da identificação de proteínas urinárias por espectrometria de massas (nano LC-MS/MS) em animais saudáveis e com DRC nos estágios de I a IV, sugerindo, se pertinente, marcadores que possam auxiliar no diagnóstico precoce e prognóstico da DRC. Como resultado da revisão, observou-se proteínas com potencial para biomarcador, uma diversidade metodológica nos estudos descritos empregando proteômica urinária, além de importantes pontos de viés. Além disso, o experimento identificou 65 proteínas por meio da metodologia empregada, notando-se uma tendência ao aumento das proteínas de acordo com a gravidade da DRC, tendo destaque para haptoglobina e transferrina como possíveis biomarcadores e para o papel do sistema complemento na patogenia da doença, necessitando-se de futuros estudos para maior elucidação. Palavras-chave: Proteinúria; Espectrometria de Massas; Nefropatia; Diagnóstico precoce.
Chronic kidney disease (CKD) is a common, progressive and irreversible disease in dogs. Addiction and proteinuria are related to the progression process of CKD. Carrying out studies in the search for early markers and indicators of the degree and location of renal inflammation, in order to assist in diagnosis and prognosis, is extremely important. 22 samples from canines of random breed, age and sex, with CKD at different stages and 5 healthy animals, were used to evaluate the urine protein profile by nano LC-MS/MS. The animals were divided into five experimental groups: group C (CG) composed of healthy animals (control); group 1 (G1) composed of animals with stage I CKD; group 2 (G2), composed of animals with stage II CKD; group 3 (G3), composed of animals with stage III CKD; and group 4 (G4), composed of animals with stage IV CKD. The objectives of this study were to understand the characterization of the urinary protein profile in dogs considering the degree of renal involvement, by carrying out a systematic review on the subject and identifying urinary proteins by mass spectrometry (nano LC-MS/MS ) in healthy animals and with CKD in advances from I to IV, indicating, if relevant, markers that can assist in the early diagnosis and prognosis of CKD. As a result of the review, proteins with biomarker potential were observed, methodological diversity was demonstrated in the studies described using urinary proteomics, in addition to important points of insight. Furthermore, the experiment identified 65 proteins through the methodology used, noting a tendency for proteins to increase according to the severity of CKD, highlighting haptoglobin and transferrin as possible biomarkers and the role of the complement system in the pathogenesis of CKD. disease, requiring future studies for greater elucidation. Keywords: Proteinuria; Mass Spectrometry; Nephropathy; Early diagnosis.
Chronic kidney disease (CKD) is a common, progressive and irreversible disease in dogs. Addiction and proteinuria are related to the progression process of CKD. Carrying out studies in the search for early markers and indicators of the degree and location of renal inflammation, in order to assist in diagnosis and prognosis, is extremely important. 22 samples from canines of random breed, age and sex, with CKD at different stages and 5 healthy animals, were used to evaluate the urine protein profile by nano LC-MS/MS. The animals were divided into five experimental groups: group C (CG) composed of healthy animals (control); group 1 (G1) composed of animals with stage I CKD; group 2 (G2), composed of animals with stage II CKD; group 3 (G3), composed of animals with stage III CKD; and group 4 (G4), composed of animals with stage IV CKD. The objectives of this study were to understand the characterization of the urinary protein profile in dogs considering the degree of renal involvement, by carrying out a systematic review on the subject and identifying urinary proteins by mass spectrometry (nano LC-MS/MS ) in healthy animals and with CKD in advances from I to IV, indicating, if relevant, markers that can assist in the early diagnosis and prognosis of CKD. As a result of the review, proteins with biomarker potential were observed, methodological diversity was demonstrated in the studies described using urinary proteomics, in addition to important points of insight. Furthermore, the experiment identified 65 proteins through the methodology used, noting a tendency for proteins to increase according to the severity of CKD, highlighting haptoglobin and transferrin as possible biomarkers and the role of the complement system in the pathogenesis of CKD. disease, requiring future studies for greater elucidation. Keywords: Proteinuria; Mass Spectrometry; Nephropathy; Early diagnosis.
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DORNELAS, Lorraine Rossi Signorelli Machado. Caracterização proteômica urinária de cães sadios e com diferentes estágios da doença renal crônica. 2024. 110 f. Tese (Doutorado em Medicina Veterinária) - Universidade Federal de Viçosa, Viçosa. 2024.
