Polimorfismos genéticos predictores de mortalidad asociada a shock séptico en pacientes sometidos a cirugía mayor
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2023
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03/03/2023
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Universidad Complutense de Madrid
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La sepsis es un proceso patológico de respuesta desregulada a una infección. Los casos graves de sepsis pueden desembocar en shock séptico, que se relaciona con una elevada morbimortalidad. Asimismo, existe una elevada heterogeneidad en los pacientes sépticos que condicionan su evolución y pronóstico. El estudio y caracterización de las diferencias a nivel genético, y en concreto la existencia de polimorfismos genéticos de un solo nucleótido (SNPs), puede contribuir a conocer mejor la inmunopatogenia de esta enfermedad, así como mejorar su manejo. Objetivos: Estudiar la presencia de diferentes SNPs en genes relacionados con la respuesta inmunitaria innata y su asociación con la mortalidad en pacientes que fueron sometidos a cirugía mayor y que desarrollaron shock séptico tras la cirugía. Métodos: Se llevó a cabo un estudio retrospectivo sobre 175 pacientes que desarrollaron shock séptico tras una cirugía mayor en el Hospital Clínico Universitario de Valladolid, entre2008 y 2012. Se seleccionaron un total de quince SNPs en cuatro genes relacionados con la respuesta inmunitaria innata: una citocina (Interferón Lambda 3 – IFNL3, SNP analizado: rs12980275), un marcador de subpoblaciones de neutrófilos (Olfactomedina4 – OLFM4, SNPs analizados: rs9536339, rs1891944, rs9563130, rs9536343,rs17552047, rs2298229 y rs12552), una glicoproteína de superficie (Molécula de adhesión celular relacionada con el antígeno carcinoembrionario 7 – CEACAM7, SNPs analizados: rs1001578, rs10409040, rs59654817 y rs889365) y el receptor de una citocina proinflamatoria (Receptor tipo I de la Interleucina 1 – IL-1R1, SNPs analizados:rs2110726, rs3917225 y rs6755229). Se estudió la relación entre dichos SNPs y la mortalidad a 28 días desde el diagnóstico de shock séptico, empleando curvas de supervivencia de Kaplan-Meier y regresión de riesgos proporcionales de Cox multivariante, ajustando por las covariables clínicas más significativas...
Sepsis is a pathological process due to a dysregulated response to an infection. Severe cases of sepsis can lead to septic shock, which is associated with high morbidity and mortality. Likewise, there is a high heterogeneity in septic patients that conditions their evolution and prognosis. The study and characterization of the differences at the genetic level, and specifically the existence of single nucleotide polymorphisms (SNPs) can contribute to a better understanding of the immunopathogenesis of this disease, aswell as improve its management. Objectives: To study the presence of different SNPs in genes related to the innate immune response and its association with mortality in patients who underwent major surgery and who developed septic shock after surgery. Methods: A retrospective study was carried out on 175 patients who developed septic shock after major surgery at the Hospital Clínico Universitario de Valladolid, between 2008 and2012. A total of fifteen SNPs in four genes related to the innate immune response were selected: a cytokine (Interferon Lambda 3 – IFNL3, analyzed SNP: rs12980275), a marker of subpopulations of neutrophils (Olfactomedin 4 – OLFM4, analyzed SNPs:rs9536339, rs1891944, rs9563130, rs9536343, rs17552047, rs2298229 and rs12552), a surface glycoprotein (Carcinoembryonic antigen-related cell adhesion molecule 7 –CEACAM7, analyzed SNPs: rs1001578, rs10409040, rs59654817 and rs889365) and the receptor of a proinflammatory cytokine (Type I Interleukin 1 Receptor – IL-1R1, SNPs analyzed: rs2110726, rs3917225 and rs6755229). The relationship between these SNPs and 28-day mortality after septic shock diagnosis was assessed using Kaplan-Meier survival curves and multivariate Cox proportional hazards regression, adjusting for the most significant clinical covariates...
Sepsis is a pathological process due to a dysregulated response to an infection. Severe cases of sepsis can lead to septic shock, which is associated with high morbidity and mortality. Likewise, there is a high heterogeneity in septic patients that conditions their evolution and prognosis. The study and characterization of the differences at the genetic level, and specifically the existence of single nucleotide polymorphisms (SNPs) can contribute to a better understanding of the immunopathogenesis of this disease, aswell as improve its management. Objectives: To study the presence of different SNPs in genes related to the innate immune response and its association with mortality in patients who underwent major surgery and who developed septic shock after surgery. Methods: A retrospective study was carried out on 175 patients who developed septic shock after major surgery at the Hospital Clínico Universitario de Valladolid, between 2008 and2012. A total of fifteen SNPs in four genes related to the innate immune response were selected: a cytokine (Interferon Lambda 3 – IFNL3, analyzed SNP: rs12980275), a marker of subpopulations of neutrophils (Olfactomedin 4 – OLFM4, analyzed SNPs:rs9536339, rs1891944, rs9563130, rs9536343, rs17552047, rs2298229 and rs12552), a surface glycoprotein (Carcinoembryonic antigen-related cell adhesion molecule 7 –CEACAM7, analyzed SNPs: rs1001578, rs10409040, rs59654817 and rs889365) and the receptor of a proinflammatory cytokine (Type I Interleukin 1 Receptor – IL-1R1, SNPs analyzed: rs2110726, rs3917225 and rs6755229). The relationship between these SNPs and 28-day mortality after septic shock diagnosis was assessed using Kaplan-Meier survival curves and multivariate Cox proportional hazards regression, adjusting for the most significant clinical covariates...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída el 03-03-2023. Tesis formato europeo (compendio de artículos)