Early alterations of the innate and adaptive immune statuses in sepsis according to the type of underlying infection
- PMID: 20504311
- PMCID: PMC2911733
- DOI: 10.1186/cc9031
Early alterations of the innate and adaptive immune statuses in sepsis according to the type of underlying infection
Abstract
Introduction: Although major changes of the immune system have been described in sepsis, it has never been studied whether these may differ in relation to the type of underlying infection or not. This was studied for the first time.
Methods: The statuses of the innate and adaptive immune systems were prospectively compared in 505 patients. Whole blood was sampled within less than 24 hours of advent of sepsis; white blood cells were stained with monoclonal antibodies and analyzed though a flow cytometer.
Results: Expression of HLA-DR was significantly decreased among patients with severe sepsis/shock due to acute pyelonephritis and intraabdominal infections compared with sepsis. The rate of apoptosis of natural killer (NK) cells differed significantly among patients with severe sepsis/shock due to ventilator-associated pneumonia (VAP) and hospital-acquired pneumonia (HAP) compared with sepsis. The rate of apoptosis of NKT cells differed significantly among patients with severe sepsis/shock due to acute pyelonephritis, primary bacteremia and VAP/HAP compared with sepsis. Regarding adaptive immunity, absolute counts of CD4-lymphocytes were significantly decreased among patients with severe sepsis/shock due to community-acquired pneumonia (CAP) and intraabdominal infections compared with sepsis. Absolute counts of B-lymphocytes were significantly decreased among patients with severe sepsis/shock due to CAP compared with sepsis.
Conclusions: Major differences of the early statuses of the innate and adaptive immune systems exist between sepsis and severe sepsis/shock in relation to the underlying type of infection. These results may have a major impact on therapeutics.
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Comment in
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Immune status in sepsis: the bug, the site of infection and the severity can make the difference.Crit Care. 2010;14(3):167. doi: 10.1186/cc9046. Epub 2010 Jun 18. Crit Care. 2010. PMID: 20584346 Free PMC article.
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Assessment of monocytic HLA-DR expression in ICU patients: analytical issues for multicentric flow cytometry studies.Crit Care. 2010;14(4):432. doi: 10.1186/cc9184. Epub 2010 Jul 27. Crit Care. 2010. PMID: 20670390 Free PMC article. No abstract available.
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Understanding immune dysfunctions in sepsis patients.Crit Care. 2010;14(4):435. doi: 10.1186/cc9202. Epub 2010 Aug 10. Crit Care. 2010. PMID: 20701813 Free PMC article. No abstract available.
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