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1.
Rev. clín. esp. (Ed. impr.) ; 211(10): 511-516, nov. 2011.
Artigo em Espanhol | IBECS | ID: ibc-91260

RESUMO

Antecedentes y objetivos. La enfermedad pulmonar obstructiva crónica (EPOC) se acompaña de afectación muscular. La pseudouridina, catabolito del RNA, ha sido empleado en otras afecciones para evaluar el catabolismo muscular. Hemos examinado la excreción de pseudouridina en pacientes con diferentes estadios evolutivos de su EPOC. Sujetos y métodos. En cuatro grupos de sujetos (controles sanos y enfermos con bronquitis crónica, EPOC emergente y EPOC avanzada) determinamos la excreción urinaria de pseudouridina (orina aleatoria) mediante cromatografía líquida de alta resolución (HPLC). Resultados. La excreción de pseudouridina (cociente pseudouridina/creatinina [Psu/Crea]) en la población sana fue de (media ± DE) 19,9±6,6μmol/mmol y se halló muy incrementada en todos los enfermos con afección pulmonar: bronquitis crónica, 44,1±60,7μmol/mmol; EPOC emergente, 81,6±56,8μmol/mmol y EPOC avanzada, 140,1±68,0μmol/mmol (p<0,01 para todas las comparaciones con los sujetos normales y entre los pacientes con afección pulmonar). La edad y el sexo no influyeron en la excreción de pseudouridina. Conclusión. La excreción de pseudouridina está incrementada en pacientes con bronquitis crónica y EPOC. Se relaciona con el estadio de la enfermedad y su excreción es independiente de la edad y del sexo(AU)


Background and objectives. Chronic obstructive pulmonary disease (COPD) is accompanied by muscle involvement. Pseudouridine, a catabolite of RNA, has been used in other conditions to assess muscle catabolism. We have examined the excretion of pseudouridine in patients with different stages of COPDs evolution. Subjects and methods. We have defined four population groups: control group (without disease), chronic bronchitis group, emerging COPD group, and advanced COPD group. Pseudouridine was determined by high performance liquid chromatography, Results. Pseudouridine extraction (pseudouridine/creatinine ratio) was (mean + 19.9 (6.6) μmol/mmol in control group and was found to be very increased in all the patients with pulmonary condition: chronic bronchitis, 44.1 (60.75) μmol/mmol, 81.6 (56.8) μmol/mmol in emerging COPD group and 140.1 (68) μmol/mmol in advanced COPD for all the comparisons with normal subjects and among patients with lung disease). Age and gender did not affect pseudouridine excretion. Conclusions. The urinary excretion of pseudouridine is increased in chronic bronchitis and COPD and is related to disease stage. Its excretion is independent of age and gender(AU)


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Metabolismo/fisiologia , Doença Pulmonar Obstrutiva Crônica/complicações , Cromatografia Líquida de Alta Pressão/métodos , Cromatografia Líquida de Alta Pressão , Pseudouridina/uso terapêutico , Doenças Musculares/complicações , Doenças Musculares/metabolismo , Antropometria/métodos , Cromatografia Líquida de Alta Pressão/tendências , Análise de Variância
2.
Rev Clin Esp ; 211(10): 511-6, 2011 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-21993176

RESUMO

BACKGROUND AND OBJECTIVES: Chronic obstructive pulmonary disease (COPD) is accompanied by muscle involvement. Pseudouridine, a catabolite of RNA, has been used in other conditions to assess muscle catabolism. We have examined the excretion of pseudouridine in patients with different stages of COPDs evolution. SUBJECTS AND METHODS: We have defined four population groups: control group (without disease), chronic bronchitis group, emerging COPD group, and advanced COPD group. Pseudouridine was determined by high performance liquid chromatography, RESULTS: Pseudouridine extraction (pseudouridine/creatinine ratio) was (mean+19.9 (6.6) µmol/mmol in control group and was found to be very increased in all the patients with pulmonary condition: chronic bronchitis, 44.1 (60.75) µmol/mmol, 81.6 (56.8) µmol/mmol in emerging COPD group and 140.1 (68) µmol/mmol in advanced COPD for all the comparisons with normal subjects and among patients with lung disease). Age and gender did not affect pseudouridine excretion. CONCLUSIONS: The urinary excretion of pseudouridine is increased in chronic bronchitis and COPD and is related to disease stage. Its excretion is independent of age and gender.


Assuntos
Músculos/metabolismo , Pseudouridina/urina , Doença Pulmonar Obstrutiva Crônica/urina , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/urina , Bronquite Crônica/fisiopatologia , Bronquite Crônica/urina , Cromatografia Líquida de Alta Pressão , Creatinina/urina , Estudos Transversais , Feminino , Volume Expiratório Forçado , Humanos , Masculino , Pessoa de Meia-Idade , Doença Pulmonar Obstrutiva Crônica/fisiopatologia
3.
Rev. patol. respir ; 14(1): 4-9, ene.-mar. 2011. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-98414

RESUMO

Introducci¨®n: La enfermedad pulmonar obstructiva cr¨®nica (EPOC) es la cuarta causa de muerte en el mundo, en la que se aprecia afectaci¨®n muscular, en estadios iniciales asintom¨¢ticos, producto del desequilibrio proteico que ha sido medido en otros procesos mediante la excreci¨®n urinaria de pseudouridina. Objetivos: Investigar, mediante la excreci¨®n urinaria de pseudouridina, si el catabolismo muscular en EPOC est¨¢ elevado, y en qu¨¦ medida se relaciona con la edad y con el sexo. Material y m¨¦todos: El estudio se basa en un an¨¢lisis prospectivo y aleatorio de una poblaci¨®n control y otra con EPOC. La determinaci¨®n simult¨¢nea de pseudouridina y creatinina en orina se lleva a cabo por cromatograf¨ªa l¨ªquida de alta resoluci¨®n (HPLC). Se realiza un estudio estad¨ªstico descriptivo de las variables edad, sexo, excreci¨®n de pseudouridina y, mediante curva ROC de la variable pseudouridina excretada, se determina el punto de corte con mayor sensibilidad y especificidad entre ambas poblaciones. Resultados: No se observan diferencias estad¨ªsticamente significativas en la pseudouridina excretada, ni con respecto a la edad ni al sexo, en los grupos estudiados. La excreci¨®n de pseudouridina fue significativamente mayor en los pacientes con EPOC, 94,40 (87,64) ¦Ìmol/mmol con respecto al grupo control, 19,90 (6,6) ¦Ìmol/mmol Md (IQR) (p < 0,001). En el an¨¢lisis mediante curva ROC, el punto de corte ¨®ptimo con mayor sensibilidad y especificidad para distinguir personas con un catabolismo muscular alterado es el correspondiente a una excreci¨®n de pseudoridina de 29,39 ¦Ìmol/mmol. Conclusiones: La medida de la pseudouridina excretada en orina, realizada con este m¨¦todo,puede ser utilizada como control del catabolismo muscular. En nuestro estudio, el ¨¢rea bajo la curva para la excreci¨®n urinaria de pseudouridina fue de 0,972 y el punto de corte obtenido, fue 29,39 ¦Ìmol/mmol y corresponder¨¢ a individuos con un catabolismo incrementado debido a la EPOC (AU)


Introduction: Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death in the world, appreciating muscle involvement, asymptomatic in early stages, which is due to a protein imbalance that has been measured in other processes by the urinary excretion of pseudouridine. Objectives: To research, using urinary excretion of pseudouridine, if muscle catabolism in COPD is high and until what extent is related to age and gender. Material and methods: The study is based on an analysis of a prospective randomized control group and one with COPD. Simultaneous determination of pseudouridine and creatinine in urine was performed by high-performance liquid chromatography (HPLC). We performed a descriptive statistical study of the variables age, gender, excretion of pseudouridine, and a ROC curve of the variable pseudouridine excretion, determines the cut point with higher sensitivity and specificity between the two populations. Results: No statistically significant differences were found in the pseudouridine excreted, with respect to age or gender, in the groups studied. Pseudouridine excretion was significantly higher in patients with COPD, 94.40 (87.64) ¦Ìmol/mmol, with respect to the control group, 19.90 (6.6) ¦Ìmol/mmol Md (IQR) (p <0.001). In the ROC curves analysis, pseudouridine excretion had area under the curve 0.972 and the optime cut point for pseudouridine excretion in our trial was 29.39 ¦Ìmol/mmol (Sensibility 93.1% and Specificity 100%) and can be used to distinguish people with altered muscle catabolism. Conclusions: The measure of pseudouridine excreted in urine, performed by this method, can be used as a control of muscle breakdown. In our study, the cut point was 29.39 ¦Ìmol/ mmol which means, that people with a pseudouridine excretion 29.39 ¦Ìmol/mmol, shall be individuals with an increased catabolism due to COPD (AU)


Assuntos
Humanos , Doença Pulmonar Obstrutiva Crônica/metabolismo , Pseudouridina/urina , Creatinina/urina , Músculos/metabolismo , Cromatografia Líquida de Alta Pressão/métodos
4.
Rev. patol. respir ; 13(3): 114-120, jul.-sept. 2010. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-102195

RESUMO

Objetivos: Estudiar las variaciones producidas a lo largo de 3 años en la concentración sérica de colesterol HDL (high density lipoprotein) en función del hábito tabáquico, en una población de varones sanos, así como la prevalencia del hábito en dicha población. Material y métodos: Estudio pareado en el que participan 346 pilotos que acuden a un reconocimiento médico laboral entre los años 2003 y 2006. Se determinan las modificaciones producidas en la concentración sérica de colesterol HDL en función de las diversas conductas respecto al hábito tabáquico. Resultados: El estudio cuenta con un total de 346 participantes con una edad media de 44 ± 9 años. Atendiendo a los cambios encontrados desde el punto de vista del hábito tabáquico, analizamos las variaciones producidas en las concentraciones de colesterol HDL a lo largo de estos tres años. Encontramos un descenso significativo en el grupo que se inicia en el consumo de tabaco (p = 0,01) de 16 mg/dl. En los individuos en los que no existen modificaciones desde el punto de vista del tabaco, encontramos un descenso de 2,62 mg/dl para los fumadores y de 3,32 mg/dl para los no fumadores, ambos estadísticamente significativos (p = 0,04 y p = 0,00 respectivamente). En los fumadores que abandonan el hábito, encontramos un aumento de 1,79 mg/dl, sin encontrar significación estadística (p = 0,4). No encontramos correlación entre las cifras de colesterol HDL y la carga tabáquica. En cuanto a las modificaciones producidas desde el punto de vista del hábito tabáquico, un total de 97 individuos (28%) se declaran fumadores activos durante el año 2003, abandonando el hábito a lo largo de los 3 años siguientes el 40,2% de los mismos. Por el contrario, un 16,7% de los no fumadores o ex fumadores en el año 2003 comienzan con el consumo de tabaco. Conclusiones: Existe un descenso importante en las cifras de colesterol HDL tras el inicio del hábito tabáquico. Tras el abandono del mismo, existe una ligera recuperación, sin que se haya podido demostrar significación estadística. La prevalencia del hábito tabáquico presenta cifras inferiores a la media nacional (AU)


Objective: To study the variations produced over a 3-year period in HDL serum concentration (high density lipoprotein cholesterol) based on the smoking habit, in a healthy male population and the prevalence of smoking in this population. Material and methods: A paired study in which 346 pilots who came for an occupation medical checkup in the years 2003 and 2006 participated. The changes produced in cHDL serum concentration based on different behaviors regarding the smoking habit were measured. Results: A total of 346 subjects, mean age 44 ± 9 years, participated in the study. Considering the changes found from the smoking habit point of view, we analyzed the variations produced in cHDL concentrations over these three years. We found a significant decrease in the group beginning with tobacco consumption (p = 0.01) of 16 mg /dl. In those individuals in whom no changes had occurred from the smoking point of view, we found a decrease of 2.62 mg/dl for the smokers and 3.32 mg/dl for the non-smokers, both statistically significant (p = 0.04 and p = 0.00, respectively). In the smokers who had quit smoking, we found an increase of 1.79 mg/dl, without finding statistical significance (p = 0.4). We did not find any correlation between the cHDL levels and the smoke load. In regards to the modifications produced from the smoking point of view, a total of 97 individuals (28%) declared they were active smokers during 2003, 40.2% of them quitting over the next 3 years. On the contrary, 16.7% of the non-smokers or ex-smokers in 2003 began to smoke. Conclusions: There is a significant decrease in cHDL levels after initiating the smoking habit. There is mild recovery after smoking cessation, but statistical significance could not be demonstrated. The prevalence of the smoking habit has lower levels than on the national level (AU)


Assuntos
Humanos , Tabagismo/complicações , HDL-Colesterol , Fumar/efeitos adversos , Epidemiologia Descritiva , Abandono do Hábito de Fumar/estatística & dados numéricos , Fatores de Risco
8.
An Esp Pediatr ; 28(1): 63-5, 1988 Jan.
Artigo em Espanhol | MEDLINE | ID: mdl-3279889

RESUMO

An extracranial arteriovenous fistula case, placed in vertebral artery territory that dealt with congestive heart failure and which developed advantageously without a surgical treatment is shown. Authors emphasize the fact of being a rarity the so premature beginning of the signs in a arteriovenous communication at that level, results in Doppler duplex echography and the need to have in count this entity previous to congestive heart failure with a deep origin in neonatal period.


Assuntos
Malformações Arteriovenosas/complicações , Insuficiência Cardíaca/etiologia , Ultrassonografia , Artéria Vertebral , Malformações Arteriovenosas/diagnóstico , Malformações Arteriovenosas/diagnóstico por imagem , Humanos , Recém-Nascido , Masculino , Radiografia
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