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Soluble interleukin...
Soluble interleukin-6 receptor, interleukin-10 and granulocyte colony-stimulating factor in acute pyelonephritis: relationship to markers of bacterial virulence and renal function
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- Jacobson, SH (författare)
- Karolinska Institutet
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Lu, Y (författare)
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- Brauner, A (författare)
- Karolinska Institutet
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(creator_code:org_t)
- 1998-12-07
- 1998
- Engelska.
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Ingår i: Nephron. - : S. Karger AG. - 1660-8151 .- 2235-3186. ; 80:4, s. 401-407
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Abstract
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- <b>Background:</b> Cytokines and cytokine receptors are involved in the systemic and local inflammatory response in patients with urinary tract infections. <b>Methods:</b> We examined urine and serum concentrations of soluble IL-6 receptor (sIL-6R), IL-10 and granulocyte colony-stimulating factor (G-CSF) in 29 women with acute pyelonephritis caused by <i>Escherichia coli</i> 2 weeks after the infection, during the subsequent episode of cystitis or asymptomatic bacteriuria and also later when the same patients were free from bacteriuria. Concentrations of sIL-6R, IL-10 and G-CSF were related to the expression of five virulence markers of <i>E. coli</i> and to glomerular filtration rate (GFR) after pyelonephritis. <b>Results:</b> On admission because of acute pyelonephritis the serum concentration of sIL-6R was similar to that of 12 healthy controls. Two weeks after the infection when all patients had received antibiotic treatment, the serum concentration of sIL-6R was significantly higher compared to that on admission (p < 0.001) and also higher compared to healthy controls (p = 0.001). Patients with increased concentrations of sIL-6R in serum 2 weeks after infection had significantly lower GFR at follow-up (p < 0.05). Patients with acute pyelonephritis had higher concentrations of G-CSF and IL-10 in serum compared to healthy subjects (p < 0.001 and p = 0.06, respectively). G-CSF in serum was higher in patients infected by <i>E. coli</i> producing cytotoxic necrotizing factor (p < 0.05). Patients infected by strains producing hemolysin had lower concentrations of sIL-6R (p < 0.001). Patients with detectable levels of the anti-inflammatory cytokine IL-10 in serum had significantly higher concentrations of IL-6 and the soluble tumor necrosis factor receptors I and II in serum as compared to patients in whom IL-10 was not detectable (p < 0.001, p = 0.001 and p < 0.05, respectively. <b>Conclusion:</b> These investigations, together with our previous findings summarized in this paper, contribute to an increased understanding of the local and systemic inflammatory response arising in response to acute pyelonephritis.
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