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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2017.tde-09082017-114631
Document
Author
Full name
Talita Freitas Manzoli
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Troster, Eduardo Juan (President)
Pastorino, Antonio Carlos
Forte, Wilma Carvalho Neves
Souza, Daniela Carla de
Title in Portuguese
Dosagem de HLA-DR (Human Leukocyte antigen DR) de mononucleares para avaliação de imunoparalisia em pacientes sépticos na Unidade de Terapia Intensiva Pediátrica (UTIP) de um Hospital Terciário
Keywords in Portuguese
Antígeno HLA-DR1
Antígeno HLA-DR2
Choque séptico
Imunomodulação
Imunoparalisia
Monócitos
Sepse
Abstract in Portuguese
O presente estudo avaliou a ocorrência de imunoparalisia e sua associação com pior prognóstico em pacientes pediátricos internados em uma UTI de hospital terciário. Para determinar a presença de imunoparalisia procedeu-se a dosagem da expressão de mHLA-DR usando o QuantiBRITE TM Anti HLA-DR/ Anti- Monocyte, um novo reagente que padroniza os valores da citometria de fluxo para o mHLA-DR. Determinamos a expressão de mHLA-DR em 30 pacientes com sepse grave ou choque sépticos admitidos na UTI Pediátrica no período do estudo, mHLA-DR foi quantificado por duas vezes: entre os dias 3 a 5 (mHLA-DR1) e 5 a 7 (mHLA-DR2) após o inicio do quadro séptico. Também foi calculado o deltamHLA-DR (mHLA-DR2 - mHLA-DR1). Dosamos, ainda, o mHLA-DR em vinte e um controles hígidos. O objetivo do estudo foi determinar se a expressão de mHLA-DR correlaciona-se com a mortalidade em pacientes sépticos pediátricos. Os resultados mostram que o mHLA-DR foi significativamente menor nos pacientes sépticos do que nos controles (p = 0.0001). A mortalidade foi de 46% nos pacientes com valores negativos ou < 1000 mAb/cell de deltaHLA-DR, e 7% em pacientes com valores positivos ou > 1000 mAb/cell de deltaHLADR. O deltamHLA-DR médio foi significativamente diferente entre sobreviventes e pacientes que foram a óbito (p = 0.023). Dessa forma, após a análise estatística dos resultados concluímos que o deltaHLA-DR correlaciona-se com a mortalidade em pacientes pediátricos com sepse grave e choque séptico
Title in English
Mononuclear HLA-DR (Human Leukocyte antigen DR) dosage for the evaluation of immunoparalysis in pediatric septic patients of a tertiary Intensive Care Unit (PICU)
Keywords in English
HLA-DR1 antigen
HLA-DR2 antigen
Immunomodulation
Immunoparalysis
Monocyte
Sepsis
Septic shock
Abstract in English
This study analysis the presence of Immunoparalysis and its association with prognosis in pediatric septic patients of a Tertiary Intensive Care Unit. To determine the presence of immunoparalysis we performed the mHLA-DR dosage using the QuantiBRITE TM Anti HLA-DR/ Anti- Monocyte, a novel reagent that standardizes flow cytometry values. We determined mHLA-DR expression in 30 patients with severe sepsis or septic shock admitted to PICU, mHLA-DR expression was quantified between days 3-5 and 5-7 after the onset of sepsis and calculated the deltamHLA-DR (mHLA-DR2 - mHLADR1). We also measured mHLA-DR levels in twenty-one healthy patients. The objective of this study was to determine if mHLA-DR values correlate with mortality in pediatric septic patients. The results showed that the mean mHLA-DR expression was significantly lower in septic patients compared with controls (p = 0.0001). Mortality was 46% in patients with negative deltaHLA-DR or < 1000 mAb/cell and 7% in patients with positive deltaHLA-DR or > 1000 mAb/cell. Mean deltamHLA-DR levels were significantly different between survivors and non-survivors (p = 0.023). After statistical analysis we concluded that deltaHLA-DR correlates with mortality in pediatric patients with septic shock or severe sepsis
 
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Publishing Date
2017-08-10
 
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