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Initial Immune Response in Escherichia coli, Staphylococcus aureus, and Candida albicans Bacteremia.
- Source :
-
Inflammation [Inflammation] 2020 Feb; Vol. 43 (1), pp. 179-190. - Publication Year :
- 2020
-
Abstract
- Sepsis remains a leading cause of mortality worldwide and is characterized by sustained inflammatory responses, reflected as changes in the expression profile of cytokines with time. The aim of the present study was to investigate the dynamic changes in complete blood count, serum chemistry, procalcitonin (PCT), tumor necrosis factor-alpha (TNF-α), and interleukin-6 (IL-6) in Escherichia coli, Staphylococcus aureus, and Candida albicans bacteremia. Study subjects were 32 healthy male Landrace-Large White pigs, aged 10-15 weeks and of average weight 19 ± 2 kg. Bacteremia was induced by continuous intravenous infusion of microbial suspensions during a period of 8 h. E. coli and S. aureus bacteremia were associated with a significant gradual decrease in white blood cells and platelets, respectively (p = 0.002 and p = 0.004), while candidemia was characterized by a significant gradual decrease in lymphocytes (p = 0.009). Serum PCT levels were either undetectable or very low, with no significant changes with time in all groups. E. coli bacteremia elicited a strong pro-inflammatory response, characterized by a significant increase in TNF-α expression from the onset of bacteremia (p = 0.042). C. albicans exhibited a different profile with an early, moderate increase in TNF-α followed by a subsequent marked increase in IL-6 levels (p = 0.03). The differential regulation of inflammatory and hematological responses depending on the pathogenic agent can reveal differences in the underlying inflammatory mechanisms, which may assist in the ongoing quest for the identification of a panel of circulating biomarkers during bacteremia.
- Subjects :
- Animals
Bacteremia blood
Bacteremia microbiology
Candidiasis blood
Candidiasis microbiology
Disease Models, Animal
Escherichia coli Infections blood
Escherichia coli Infections microbiology
Host-Pathogen Interactions
Inflammation Mediators blood
Interleukin-6 blood
Leukocyte Count
Male
Platelet Count
Procalcitonin blood
Staphylococcal Infections blood
Staphylococcal Infections microbiology
Sus scrofa
Time Factors
Tumor Necrosis Factor-alpha blood
Bacteremia immunology
Candidiasis immunology
Escherichia coli Infections immunology
Staphylococcal Infections immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1573-2576
- Volume :
- 43
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Inflammation
- Publication Type :
- Academic Journal
- Accession number :
- 31758425
- Full Text :
- https://doi.org/10.1007/s10753-019-01108-9