Cuantificación del p-cresol sérico y su relación con la masa muscular en pacientes en hemodiálisis

dc.contributor.advisorDueñas Gómez, Zulma Janethspa
dc.contributor.advisorMartínez Ramírez, Jorge Arielspa
dc.contributor.authorMachacado Rojas, Mável Ximenaspa
dc.date.accessioned2020-11-11T15:53:06Zspa
dc.date.available2020-11-11T15:53:06Zspa
dc.date.issued2020-11-10spa
dc.description.abstractIntroducción: p-cresol (PC), toxina urémica producida por la microbiota intestinal no ha sido cuantificada en Colombia, sus elevadas concentraciones en la creciente población de hemodiálisis (HD) es perjudicial en distintos tejidos, acentuando la inflamación, oxidación y desgaste de las reservas proteicas y energéticas. Objetivo: identificar relación entre PC sérico y masa muscular en pacientes en HD del Instituto Nacional del Riñón en Bogotá D.C. Métodos: se incorporaron 29 pacientes en HD de mantenimiento con dosis de diálisis adecuada; se recolectó información de la historia clínica, la toma de muestras se hizo antes de la hemodiálisis y tras 30 minutos de su terminación se midió la masa muscular mediante técnicas de bioimpedancia y antropometría. Se validó un método de cromatografía de gases con detector de ionización en flama (GC-FID) para la determinación de PC total presente en suero humano; consecutivamente se realizó la determinación de PC recolectado y almacenado en su matriz a -80ºC hasta el momento de su procesamiento. El análisis de datos se realizó en Rstudio® para determinar si existía correlación entre concentraciones de PC y masa muscular y otras covariables de interés. Resultados: los niveles de PC se determinaron en el rango esperado para pacientes de HD crónica (10.1 ± 4.5 mg/L). El índice de masa muscular fue de 8.83 kg/m2 en hombres y 7.44 kg/m2 en mujeres, el ángulo de fase de 6.1º (predictor de mortalidad cuando es <4.8º). No se encontró correlación significativa entre PC y masa muscular (hombres p=0.4, mujeres p=0.55) y otras covariables. Conclusiones: no se estableció correlación entre los niveles de PC y la masa muscular estimada por bioimpedancia eléctrica multifrecuencia, sin embargo, se identificaron tendencias inversamente proporcionales entre el PC y ángulo de fase.spa
dc.description.abstractIntroduction: p-cresol (PC), uremic toxin produced by the intestinal microbiota has not been quantified in Colombia, its high concentrations in the growing hemodialysis (HD) population is harmful in different tissues, accentuating inflammation, oxidation and wear of the protein and energy reserves. Objective: to identify the relationship between serum PC and muscle mass in HD patients from the Instituto Nacional del Riñón in Bogotá D.C. Methods: 29 patients on maintenance HD were incorporated with an adequate dialysis dose; Information from the medical history was collected, the samples were taken before hemodialysis and after 30 minutes from its completion, muscle mass was measured using bioimpedance and anthropometric techniques. A gas chromatography method with flame ionization detector (GC-FID) was validated for the determination of total PC present in human serum; consecutively, the determination of PC collected and stored in its matrix was performed at -80ºC until the time of its processing. Data analysis was performed in R studio® to determine if there was a correlation between PC concentrations and muscle mass, and other covariates of interest. Results: PC levels were determined in the ex-pected range for chronic HD patients (10.1 ± 4.5 mg / L). The muscle mass index was 8.83 kg / m2 in men and 7.44 kg / m2 in women, the phase angle of 6.1º (predictor of mortality when it is <4.8º). No significant correlation was found between PC and muscle mass (men p = 0.4, women p = 0.55) and other covariates. Conclusions: no correlation was established between PC levels and muscle mass estimated by multi-frequency elec-trical bioimpedance, however inversely proportional trends were identified between PC and phase angle.spa
dc.description.additionalLínea de Investigación: Fisiología renalspa
dc.description.degreelevelMaestríaspa
dc.format.extent133spa
dc.format.mimetypeapplication/pdfspa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/78612
dc.language.isospaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.programBogotá - Medicina - Maestría en Fisiologíaspa
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dc.relation.referencesSirich TL, Plummer NS, Gardner CD, et al. Effect of increasing dietary fiber on plasma levels of colon-derived solutes in hemodialysis patients. Clin J Am Soc Nephrol 2014; 9: 1603–1610.spa
dc.relation.referencesMonteiro EB, Soares E dos R, Trindade PL, et al. Uraemic toxin-induced inflammation and oxidative stress in human endothelial cells: protective effect of polyphenol-rich extract from açaí. Exp Physiol 2020; 105: 542–551.spa
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dc.relation.referencesEvenepoel P, Bammens B, Verbeke K, et al. Acarbose treatment lowers generation and serum concentrations of the protein-bound solute p-cresol: A pilot study. Kidney Int 2006; 70: 192–198.spa
dc.rightsDerechos reservados - Universidad Nacional de Colombiaspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacionalspa
dc.rights.spaAcceso abiertospa
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.subject.ddc610 - Medicina y salud::612 - Fisiología humanaspa
dc.subject.proposalp-cresolspa
dc.subject.proposalp-cresoleng
dc.subject.proposalEnfermedad Renal Crónica Terminalspa
dc.subject.proposalTerminal Chronic Kidney Diseaseeng
dc.subject.proposalHemodiálisisspa
dc.subject.proposalHemodialysiseng
dc.subject.proposalMicrobioma Gastrointestinalspa
dc.subject.proposalGastrointestinal Microbiomeeng
dc.subject.proposalMúsculo Esqueléticospa
dc.subject.proposalGas Chromatographyeng
dc.subject.proposalImpedancia Eléctrica.spa
dc.subject.proposalSkeletal Muscleeng
dc.subject.proposalElectrical Impedanceeng
dc.subject.proposalCromatografía de Gasesspa
dc.titleCuantificación del p-cresol sérico y su relación con la masa muscular en pacientes en hemodiálisisspa
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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