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Id: biblio-976482
Autor: Tassini, Luiz Eduardo S; Leme, Fabiola O. P; Veado, Júlio César C; Arndt, Márcio H. L.
Título: Determination of the reference interval for the activity of NAcetyl-ß-D-glucosaminidase (NAG) in urine of healthy dogs / Determinação de intervalo de referência para a atividade da NAcetyl-ß-D-glucosaminidase (NAG) na urina de cães sadios
Fonte: Pesqui. vet. bras = Braz. j. vet. res;38(8):1685-1690, Aug. 2018. tab, graf.
Idioma: en.
Resumo: The diagnosis of acute kidney injury by evaluating the activity of urinary enzymes is an important tool especially for its precocity in relation to methods of assessment of renal function considered late as the installation of injury precedes the function change. This study was performed to determine the reference interval for urinary NAG activity (N-Acetyl-β-D-glucosaminidase) in urine of healthy dogs of different breeds, ages and sexes. It was utilized an automated method for the determination of NAG activity standardized for dog urine samples. Through statistical analysis it was observed that NAG is positively correlated with the age of the animal and urine specific gravity but is not interfered by sex or weight. Based on the determination of urinary activity and after correcting the values for a 1,025 urine specific gravity was obtained an reference interval of X '= 3.62U/L±0.66U/L.(AU)

O diagnóstico da injúria renal aguda pela avaliação da atividade de enzimas urinárias é uma importante ferramenta para o médico veterinário, especialmente por sua precocidade em relação aos métodos de avaliação da função renal, considerados tardios, visto que a instalação da injúria precede a alteração da função. Neste estudo foi realizada a determinação do intervalo de referência médio para a atividade urinária de NAG (N-Acetyl- β-D-Glucosaminidase), em urinas de cães hígidos, de diferentes raças, sexos e faixas etárias. Para isso, trabalhou-se com um método automatizado para determinação da atividade de NAG, padronizado para amostras de urina de cães. Por meio de análise estatística, observou-se que a NAG apresenta correlação positiva com a idade do animal e com a densidade urinária, mas não sofre interferência quanto ao sexo ou peso. Com base na determinação da atividade urinária e após corrigir os valores para uma densidade de 1,025, obteve-se um intervalo de referência médio de X´ = 3,62U/L±0,66U/L.(AU)
Descritores: Acetilglucosaminidase/análise
Urina/química
Cães/fisiologia
Limites: Animais
Cães
Responsável: BR68.1 - Biblioteca Virginie Buff D'Ápice


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Id: lil-633133
Autor: Campos, Derbis; Ledesma, Yenia; Monaga, Madelyn; Herrera, Darlenis; Pampín, Yanadelys.
Título: Estudio de las enzimas lisosomales N-acetil-a-D-glucosaminidasa y arilsulfatasa A en adultos cubanos / Assay of lysosomal N-acetyl-a-D-glucosaminidase and arylsulfatase A activities in Cuban adults
Fonte: Acta bioquím. clín. latinoam;44(4):647-652, dic. 2010. graf, tab.
Idioma: es.
Resumo: El objetivo de este estudio fue determinar, en una muestra de individuos cubanos, un rango preliminar de valores normales de actividad específica de N-acetil- a-D-glucosaminidasa y arilsulfatasa A, enzimas deficientes en la mucopolisacaridosis tipo III B y la leucodistrofia metacromática, respectivamente. Se realizó una investigación de corte transversal, en muestras de sangre de 38 individuos adultos. Se realizó la extracción de los leucocitos y se determinó la actividad específica de las enzimas por métodos espectrofotométricos. Todos los participantes fueron caracterizados desde el punto de vista clínico como sanos para ambas enfermedades. Se obtuvieron valores medios de actividad específica de N-acetil-a-D-glucosaminidasa y arilsulfatasa A de 1,52±0,30 y 121,37±20,14 nmol/mg/h, respectivamente. No se encontraron diferencias significativas en relación a las características étnicas para ninguna de las dos enzimas (p<0,05). Este constituye el primer estudio cubano en el cual se publican rangos de actividad específica para estas enzimas en individuos cuya condición de sanos y no relacionados familiarmente con la enfermedad ha sido clínicamente demostrada. El análisis de un mayor número de muestras permitirá establecer los puntos de corte que dotarán al diagnóstico bioquímico de estas enfermedades de una mayor confiabilidad.

The aim of this study was to determine, in a sample of Cuban individuals, a preliminary range of normal values of N-acetyl-a-D-glucosaminidase and arylsulfatase A activity, enzymes that are deficient in mucopolysaccharidosis type III B and metachromatic leukodystrophy, respectively. A cross-sectional research was conducted. Blood samples were obtained out of 38 adult individuals. The leucocytes were extracted and the specific enzymatic activity was assayed by spectrophotometric methods. All participants were characterized from the clinical point of view as healthy for both diseases. Average values of N-acetyl-a-D-glucosaminidase and arylsulfatase A specific activities of 1.52 ± 0.30 and 121.37 ± 20.14 nmol/mg/h, respectively were obtained. There were no significant differences related to ethnicity for any of the two enzymes (p <0.05). This is the first Cuban study in which ranges of activity for these enzymes have been reported in healthy individuals whose healthy and non-familiarly related with the disease status have been clinically demonstrated. The analysis of more samples will establish the cutoff points that will increase the reliability of the biochemical diagnosis of these diseases.
Descritores: Acetilglucosaminidase
Cerebrosídeo Sulfatase
Enzimas
-Valores de Referência
Acetilglucosaminidase
Mucopolissacaridose III
Adulto
Cuba
Leucodistrofia Metacromática
Erros Inatos do Metabolismo
Limites: Humanos
Responsável: AR1.2 - Instituto de Investigaciónes Epidemiológicas


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Id: biblio-839292
Autor: Lobato, GR; Lobato, MR; Thomé, FS; Veronese, FV.
Título: Performance of urinary kidney injury molecule-1, neutrophil gelatinase-associated lipocalin, and N-acetyl-beta-D-glucosaminidase to predict chronic kidney disease progression and adverse outcomes
Fonte: Braz. j. med. biol. res = Rev. bras. pesqui. méd. biol;50(5):e6106, 2017. tab.
Idioma: en.
Resumo: Urinary biomarkers can predict the progression of chronic kidney disease (CKD). In this study, kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and N-acetyl-β-D-glucosaminidase (NAG) were correlated with the stages of CKD, and the association of these biomarkers with CKD progression and adverse outcomes was determined. A total of 250 patients, including 111 on hemodialysis, were studied. Urinary KIM-1, NGAL, and NAG were measured at baseline. Patients not on dialysis at baseline who progressed to a worse CKD stage were compared with those who did not progress. The association of each biomarker and selected covariates with progression to more advanced stages of CKD, end-stage kidney disease, or death was evaluated by Poisson regression. NGAL was moderately correlated (rs=0.467, P<0.001) with the five stages of CKD; KIM-1 and NAG were also correlated, but weakly. Sixty-four patients (46%) progressed to a more advanced stage of CKD. Compared to non-progressors, those patients exhibited a trend to higher levels of KIM-1 (P=0.064) and NGAL (P=0.065). In patients not on dialysis at baseline, NGAL was independently associated with progression of CKD, ESKD, or death (RR=1.022 for 300 ng/mL intervals; CI=1.007-1.037, P=0.004). In patients on dialysis, for each 300-ng/mL increase in urinary NGAL, there was a 1.3% increase in the risk of death (P=0.039). In conclusion, urinary NGAL was associated with adverse renal outcomes and increased risk of death in this cohort. If baseline urinary KIM-1 and NGAL predict progression to worse stages of CKD is something yet to be explored.
Descritores: Acetilglucosaminidase/urina
Receptor Celular 1 do Vírus da Hepatite A/análise
Lipocalina-2/urina
Insuficiência Renal Crônica/patologia
Insuficiência Renal Crônica/urina
-Fatores Etários
Análise de Variância
Biomarcadores/urina
Creatinina/sangue
Creatinina/urina
Progressão da Doença
Taxa de Filtração Glomerular
Valor Preditivo dos Testes
Padrões de Referência
Valores de Referência
Diálise Renal
Insuficiência Renal Crônica/complicações
Insuficiência Renal Crônica/fisiopatologia
Reprodutibilidade dos Testes
Fatores de Risco
Fatores Sexuais
Estatísticas não Paramétricas
Limites: Humanos
Masculino
Feminino
Adulto
Pessoa de Meia-Idade
Idoso
Tipo de Publ: Estudo de Avaliação
Responsável: BR1.1 - BIREME


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Id: lil-759270
Autor: Kang, Jing; Liu, Jing; Ding, Haibo; Li, Xiaolin; Wang, Qi; Guo, Xiaolin; Geng, Wenqing; Shang, Hong.
Título: Urine alpha1-microglobulin is a better marker for early tubular dysfunction than beta2-microglobulin among tenofovir-exposed human immunodeficiency virus-infected men who have sex with men
Fonte: Braz. j. infect. dis;19(4):410-416, July-Aug. 2015. tab, ilus.
Idioma: en.
Projeto: National Natural Science Foundation of China.
Resumo: Objectives: Men who have sex with men are at risk of tenofovir nephrotoxicity due to its wide use in both treatment and prophylaxis for human immunodeficiency virus infection, but little is known about the urinary biomarkers of early renal dysfunction in this population. This study aims to identify useful biomarkers of early renal dysfunction among human immunodeficiency virus-infected men who have sex with men exposed to tenofovir.Methods: In a cross-sectional study urinary alpha1-microglobulin, beta2-microglobulin, N-acetyl-B-n-glucosaminidase and albumin were measured and expressed as the ratio-to-creatinine in 239 human immunodeficiency virus-infected men who have sex with men who were treatment naïve or receiving antiretroviral therapy with tenofovir-containing or non-tenofovir-containing regimens. Additionally, 56 patients in the non-antiretroviral therapy group started a tenofovir-containing regimen and were assessed after 3 and 6 months on antiretroviral therapy.Results: Both the frequency of alpha1-microglobulin proteinuria (alpha1-microglobulin-creatinine ratio >25.8 mg/g) and the median urinary alpha1-microglobulin-creatinine ratio were higher in the tenofovir disoproxil fumarate group than the other two groups (all p< 0.05). A higher frequency of beta2-microglobulin proteinuria (beta2-microglobulin-creatinine ratio >0.68 mg/g) was also observed in the tenofovir group (28.9%) compared to the non-tenofovir group (13.6%, p= 0.024). There were no significant differences between groups for N-acetyl-β-n-glucosaminidase and albumin. In the longitudinal study, the median urinary alphat-microglobulin-creatinine ratio after 3 and 6 months on tenofovir-containing therapy (16.8 and 17.3 mg/g) was higher than baseline (12.3 mg/g, p= 0.023 and 0.011, respectively), while no statistically important changes were observed in urinary beta2-microglobulin-creatinine ratio or in the other biomarkers after 3 and 6 months on antiretroviral therapy (all p> 0.05).Conclusion: Urinary alphat-microglobulin seems to be a more sensitive and stable indicator of tubular dysfunction than urinary beta2-microglobulin for assessing tenofovir-related nephrotoxicity and can be significantly altered after tenofovir exposure.
Descritores: Nefropatia Associada a AIDS/induzido quimicamente
alfa-Globulinas/urina
Homossexualidade Masculina
Túbulos Renais Proximais
Tenofovir/efeitos adversos
/urina
BETA TEMEFOS-MICROGLOBULIN/urina
-Nefropatia Associada a AIDS/diagnóstico
Nefropatia Associada a AIDS/urina
Acetilglucosaminidase/urina
Albuminúria/induzido quimicamente
Biomarcadores/urina
Estudos Transversais
Estudos Longitudinais
Tenofovir/uso terapêutico
Limites: Adulto
Humanos
Masculino
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-729789
Autor: Bouvet, Beatriz R.; Paparella, Cecilia V.; Arriaga, Sandra M. M.; Monje, Adriana L.; Amarilla, Ana M.; Almará, Adriana M..
Título: Evaluation of urinary N-acetyl-beta-D-glucosaminidase as a marker of early renal damage in patients with type 2 diabetes mellitus / Avaliação da N-acetil-beta-D-glucosaminidase urinária como marcador de dano renal precoce em pacientes com diabetes melito tipo 2
Fonte: Arq. bras. endocrinol. metab;58(8):798-801, 11/2014. tab, graf.
Idioma: en.
Resumo: Objective To evaluate the clinical usefulness of urinary N-acetyl-beta-D-glucosaminidase (NAG) excretion for the detection of early tubular damage in type 2 diabetes mellitus (T2DM). Subjects and methods Thirty six patients with T2DM were divided into two groups based on urinary albumin to creatinine ratio (ACR): normoalbuminuria (ACR <30 mg/g; n=19) and microalbuminuria (ACR =30‐300 mg/g; n=17). The following parameters were determined in both groups: urinary NAG and albumin, serum and urine creatinine, fasting plasma glucose and glycated hemoglobin (HbA1c). Results Urinary NAG levels [Units/g creatinine; median (range)] were significantly increased in microalbuminuria group [17.0 (5.9 - 23.3)] compared to normoalbuminuria group [4.4 (1.5 - 9.2)] (P<0.001). No differences between groups were observed in fasting glucose, HbA1c, serum creatinine levels and estimated glomerular filtration rates (eGFR). Urinary NAG positively correlated with ACR (r=0.628; p<0.0001), while no significant association was observed between NAG and glycemia, HbA1c, serum creatinine and eGFR. Conclusions The increase of urinary NAG at the microalbuminuria stage of diabetic nephropathy (DN) suggests that tubular dysfunction is already present in this period. The significant positive association between urinary NAG excretion and ACR indicates the possible clinical application of urinary NAG as a complementary marker for early detection of DN in T2DM. .

Objetivo Avaliar a utilidade clínica da excreção urinária da N-acetil-beta-D-glucosaminidase (NAG) para a detecção de dano tubular precoce no diabetes melito tipo 2 (DM2). Sujeitos e métodos Foram estudados trinta e seis pacientes com DM2 que se dividiram em dois grupos com base na excreção urinária de albumina (EUA): normoalbuminúrico (EUA <30 mg/g de creatinina; n=19) e microalbuminúrico (EUA =30‐300 mg/g de creatinina; n=17). Em ambos os grupos foram determinados os seguintes parâmetros: NAG e albumina urinária, creatinina sérica e urinária, glicemia de jejum e hemoglobina glicada (HbA1c). Resultados Os níveis de NAG urinária [unidades/g de creatinina; mediana (intervalo interquartílico)] foram significativamente maiores no grupo microalbuminúrico [17,0 (5,9 - 23,3)] em comparação com o grupo normoalbuminúrico [4,4 (1,5 - 9,2)] (p<0,001). Não se observaram diferenças significativas entre os dois grupos nos níveis de glicemia de jejum, HbA1c, creatinina sérica e taxa de filtração glomerular estimada (TFGe). A NAG urinária se correlacionou positivamente com o EUA (r=0,628, p<0,0001), não sendo observada associação significativa da NAG com glicemia, HbA1c, creatinina sérica e TFGe. Conclusões O aumento da NAG urinária na fase de microalbuminúria da nefropatia diabética (ND) sugere que a disfunção tubular já está presente nesse período. A associação positiva significativa entre a excreção urinária da NAG e EUA indica a possível aplicação clínica da NAG urinária como marcador complementar para a detecção precoce da ND no DM2. .
Descritores: Acetilglucosaminidase/urina
Albuminúria/urina
/urina
DIABETES MELLITUS, TYPE TEMEFOS/urina
Nefropatias Diabéticas/diagnóstico
Túbulos Renais
-Biomarcadores/urina
Glicemia/análise
Colorimetria
Estudos Transversais
Creatinina/sangue
Creatinina/urina
/complicações
DIABETES MELLITUS, TYPE TEMEFOS/complicações
Nefropatias Diabéticas/complicações
Nefropatias Diabéticas/urina
Taxa de Filtração Glomerular/fisiologia
Hemoglobina A Glicada/análise
Túbulos Renais/lesões
Limites: Idoso
Feminino
Humanos
Masculino
Pessoa de Meia-Idade
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-522336
Autor: Becker, Sidnei; Soares, Cíntia; Porto, Luismar Marques.
Título: Computational analysis suggests that virulence of Chromobacterium violaceum might be linked to biofilm formation and poly-NAG biosynthesis
Fonte: Genet. mol. biol;32(3):640-644, 2009. ilus, tab.
Idioma: en.
Resumo: Groups of genes that produce exopolysaccharide with a N-acetyl-D-glucosamine monomer are in the genome of several pathogenic bacteria. Chromobacterium violaceum, an opportunistic pathogen, has the operon hmsHFR-CV2940, whose proteins can synthesize such polysaccharide. In this work, multiple alignments among proteins from bacteria that synthesize such polysaccharide were used to verify the existence of amino acids that might be critical for pathogen activity. Three-dimensional models were generated for spatial visualization of these amino acid residues. The analysis carried out showed that the protein HmsR preserves the amino acids D135, D228, Q264 and R267, considered critical for the formation of biofilms and, furthermore, that these amino acids are close to each other. The protein HmsF of C. violaceum preserves the residues D86, D87, H156 and W115. It was also shown that these residues are also close to each other in their spatial arrangement. For the proteins HmsH and CV2940 there is evidence of conservation of the residues R104 and W94, respectively. Conservation and favorable spatial location of those critical amino acids that constitute the proteins of the operon indicates that they preserve the same enzymatic function in biofilm synthesis. This is an indicator that the operon hmsHFR-CV2940 is a possible target in C. violaceum pathogenicity.
Descritores: Biofilmes/crescimento & desenvolvimento
Chromobacterium/patogenicidade
-Acetilglucosaminidase
Biologia Computacional
Polissacarídeos
Limites: Animais
Responsável: BR26.1 - Biblioteca Central


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Id: lil-504205
Autor: Gonçales, Leandro Nishikawa; Paoliello, Mônica Maria Bastos; Janeiro, Vanderly; Machinski Junior, Miguel.
Título: N-acetil-β-D-glicosaminidase como biomarcador precoce de disfunção renal para a exposição ocupacional ao chumbo inorgânico / N-acetyl-β-D-glucosaminidase as an early biomarker of renal dysfunction due to occupational exposure to inorganic lead
Fonte: J. bras. patol. med. lab;44(4):241-247, ago. 2008. graf, tab.
Idioma: pt.
Projeto: Fundação Araucária.
Resumo: OBJETIVO: Este estudo teve como objetivo averiguar a atividade enzimática da N-acetil-β-D-glicosaminidase (NAG) como possível biomarcador precoce de disfunção renal para a exposição ocupacional ao chumbo inorgânico. MATERIAIS E MÉTODOS: Foi selecionado um grupo de 30 pessoas do sexo masculino expostas ao chumbo inorgânico em uma fábrica de baterias localizada no estado do Paraná. Fizeram parte do grupo os funcionários que mostraram valores de chumbo sanguíneo inferiores a 40 mg/dl. O grupo controle foi representado por 15 adultos saudáveis com similaridade em relação à idade e ao gênero do grupo exposto. Foram determinados os níveis de plumbemia, do ácido d-aminolevulínico urinário e a atividade da NAG urinária. RESULTADOS E DISCUSSÃO: Foi evidenciado que a atividade urinária da NAG foi significativamente maior (p < 0,05; teste U de Mann-Whitney) no grupo exposto ao chumbo inorgânico quando comparado ao grupo controle, e houve uma correlação negativa com significância (p < 0,05; correlação de Spearman Rank Order) entre o indicador biológico de exposição plúmbica e a atividade urinária da NAG. CONCLUSÃO: Os resultados demonstraram que o aumento da atividade urinária da NAG pode ser utilizado como um biomarcador precoce da exposição ao chumbo inorgânico.

OBJECTIVE: This study aimed to verify the enzymatic activity of N-acetyl-β-D-glucosaminidase (NAG) as a possible early biomarker of renal dysfunction due to occupational exposure to inorganic lead. MATERIALS AND METHODS: We selected a group of 30 males that had been exposed to inorganic lead in a battery factory in the state of Paraná. This group comprised those employees whose blood lead levels were below 40 mg/dl. The control group consisted of 15 healthy adults of similar age and gender compared with the exposed group. Blood lead concentrations, d-aminolevulinic acid levels and urinary NAG activity were measured. RESULTS AND DISCUSSION: It was shown that urinary NAG activity was significantly higher (p < 0.05, U test of Mann-Whitney) in the exposed group in comparison to the control group, and there was a significant negative correlation (p < 0.05, Spearman Rank Order correlation) between the biological indicator of lead exposure and urinary NAG activity. CONCLUSION: The results showed that the increase of urinary NAG activity may be used as an early biomarker of the exposure to inorganic lead.
Descritores: Acetilglucosaminidase/análise
Acetilglucosaminidase/urina
Acetilglucosaminidase
Doenças Profissionais/diagnóstico
Diagnóstico Precoce
Biomarcadores/análise
Biomarcadores/urina
Nefropatias/diagnóstico
Nefropatias/enzimologia
-Ácido Aminolevulínico/análise
Ácido Aminolevulínico
Creatinina/análise
Intoxicação por Chumbo/diagnóstico
Intoxicação por Chumbo/sangue
Intoxicação por Chumbo/urina
Limites: Humanos
Masculino
Adulto
Pessoa de Meia-Idade
Responsável: BR14.1 - Biblioteca Central


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Id: lil-447472
Autor: Skalova, Sylva; Rejtar, Pavel; Kutilek, Stepan.
Título: Increased urinary n-acetyl-beta-d-glucosaminidase activity in children with hydronephrosis
Fonte: Int. braz. j. urol;33(1):80-86, Jan.-Feb. 2007. tab.
Idioma: en.
Resumo: OBJECTIVE: Hydronephrosis leads to deterioration of renal function. As urinary N-acetyl-beta-D-glucosaminidase (U-NAG) activity is considered a sensitive marker of renal tubular impairment, our aim was to measure U-NAG in children with hydronephrosis and to look for a relationship among selected clinical parameters. MATERIALS AND METHODS: We studied 31 children (22 boys and 9 girls, mean age 2.3 ± 2.5 years) with hydronephrosis grade 1-4 that had U-NAG/creatinine ratio (U-NAG/Cr) measured. RESULTS: The U-NAG/Cr was significantly higher in patients with hydronephrosis compared to reference data (p = 0.002). There was no difference in U-NAG/Cr between children with unilateral and bilateral hydronephrosis (p = 0.51). There was no significant difference in U-NAG/Cr between children with grades 1-3 (pooled data) and grade 4, respectively (p = 0.89). There was no correlation between U-NAG/Cr and the grade of hydronephrosis (r = 0.01). CONCLUSIONS: U-NAG/Cr is increased in children with hydronephrosis grade 1-4, and there is no relationship with the grade of hydronephrosis. U-NAG is a useful marker of renal tubular dysfunction, however its relationship with the degree of kidney damage in patients with hydronephrosis should be considered as doubtful.
Descritores: Acetilglucosaminidase/urina
Hidronefrose/urina
Túbulos Renais/fisiopatologia
-Biomarcadores/urina
Hidronefrose/enzimologia
Hidronefrose/fisiopatologia
Índice de Gravidade de Doença
Limites: Humanos
Masculino
Feminino
Pré-Escolar
Responsável: BR1.1 - BIREME


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Id: lil-395015
Autor: Rojas, O; Ossandón, E; Olea, M; Rodrigo, C; Vargas, R; Schwartzmann, R; Mehre, E.
Título: Evaluación del daño renal post-litotripsia extracorpórea: experiencia Hospital Clínico de la Universidad de Chile / Evaluation of renal damage secondary to extracorporeal shock ware lithotripsy: experience at the Hospital Clínico de la Universidad of Chile
Fonte: Rev. chil. urol;68(2):178-181, 2003. tab.
Idioma: es.
Resumo: Es controversial determinar la magnitud del posible daño del parénquima renal secundario a las ondas de choque utilizadas en litotripsia extracorpórea (LEC). La elevación urinaria de la actividad de la enzimaN-acetil-ß-D-glucosaminidasa (NAG) puede reflejar este daño y su evolución en el tiempo. El objetivo de este estudio será precisar la magnitud y duración del daño renal posterior a LEC, a través de mediciones de NAG y su correlación con algunos parámetros clínicos. Se realizó un estudio prospectivo en 15 pacientes, de ambos sexos, portadores de litiasis renal única, sin otra patología renal asociada. Se determinó la actividad urinaria de NAG antes y 1, 7 y 30 días post LEC. Se midió la relación entre NAG (U/L) y creatinina (mmol/L) urinarias, expresada como índice NAG (U/mmol). Se consideró su relación con: a) tamaño, b) ubicación y c) número de impactos utilizados. Paralelamente, se determinó NAG urinario como referencia en 5 pacientes sanos y en un portador de daño tubular renal. En 7 de 15 pacientes, se verificó un incremento en el índice NAG al día siguiente de la LEC, regresando a valores basales, en la mitad de los casos, al cabo de una semana. Esta elevación fue menor comparada con la observada en el paciente con daño renal. No se encontró diferencias entre el número de impactos y ubicación de la litiasis, con el valor del índice NAG. Cinco de siete pacientes que presentaron alza enzimática tenían litiasis mayor a 1 cm. Se puede señalar que la LEC produce cierto grado de daño renal, aunque de baja magnitud, variable, reversible a corto plazo y asociado al tamaño de los cálculos, similar a lo descrito en la literatura. Si bien la muestra empleada es pequeña para determinar diferencias estadísticamente significativas, nuestra investigación aparece como un informe preliminar para objetivar el potencial daño renal post-LEC y permitirá evaluar la implementación de esta técnica de medición en el futuro.
Descritores: Cálculos Renais/terapia
Litotripsia/efeitos adversos
Rim/efeitos da radiação
-Acetilglucosaminidase/urina
Acetilglucosaminidase
Creatinina/urina
Necrose Tubular Aguda/etiologia
Estudos Prospectivos
Limites: Humanos
Masculino
Adulto
Feminino
Pessoa de Meia-Idade
Responsável: CL10.1 - Biblioteca Biomédica


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Srougi, Miguel
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Id: lil-392215
Autor: Fortes, Marco A. Q. R; Andriolo, Adagmar; Ortiz, Valdemar; Srougi, Miguel.
Título: Effect of shock wave reapplication on urinary n-acetyl-beta-glucosaminidase in canine kidney
Fonte: Int. braz. j. urol;30(2):148-154, Mar.-Apr. 2004. ilus, tab.
Idioma: en.
Resumo: OBJECTIVE: Renal tubular damage can be assessed with the aid of urinary dosing of N-acetyl-beta-glucosaminidase (NAG) and it is possible to demonstrate a significant correlation between shock wave and damage to renal parenchyma. The objective of this study was to assess the effect of shock wave reapplication over urinary NAG in canine kidney. MATERIALS AND METHODS: The authors submitted 10 crossbred dogs to 2 applications of 2000 shock waves in a 24-hour interval in order to assess urinary NAG values after 12, 24, 36 and 48 hours. RESULTS: Twelve hours following the first shockwave application there was an increase in NAG of 6.47 ± 5.44 u/g creatinine (p < 0.05). Twelve hours and 24 h following the second application there was no increase in the urinary enzyme, - 2.56 ± - 7.36 u/g creatinine and 2.89 ± - 7.27 u/g creatinine, respectively (p > 0.05). CONCLUSION: Shock wave reapplication with a 24-hour interval did not cause any increase in urinary NAG.
Descritores: Acetilglucosaminidase/urina
Rim/lesões
Litotripsia/efeitos adversos
-Rim/metabolismo
Limites: Animais
Cães
Responsável: BR1.1 - BIREME



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