PMID- 9621985 OWN - NLM STAT- MEDLINE DCOM- 19980807 LR - 20151119 IS - 0031-3998 (Print) IS - 0031-3998 (Linking) VI - 43 IP - 6 DP - 1998 Jun TI - Monocyte chemoattractant protein-1 and interleukin-8 levels in urine and serum of patents with hemolytic uremic syndrome. PG - 759-67 AB - The epidemic form of the hemolytic uremic syndrome (HUS) in children is hallmarked by endothelial cell damage, most predominantly displayed by the glomerular capillaries. The influx of mononuclear (MO) and polymorphonuclear cells (PMNs) into the glomeruli may be an important event in the initiation, prolongation, and progression of glomerular endothelial cell damage in HUS patients. The molecular mechanisms for the recruitment of these leukocytes into the kidney are unclear, but monocyte chemoattractant protein-1 (MCP-1) and IL-8 are suggested to be prime candidates. In this study, we analyzed the presence of both chemokines in 24-h urinary (n = 15) and serum (n = 14) samples of HUS children by specific ELISAs. Furthermore, kidney biopsies of three different HUS children were examined for MO and PMN cell infiltration by histochemical techniques and electron microscopy. Whereas the chemokines MCP-1 and IL-8 were present in only very limited amounts in urine of 17 normal control subjects, serial samples of HUS patients demonstrated significantly elevated levels of both chemokines. HUS children with anuria showed higher initial and maximum chemokine levels than their counterparts without anuria. A strong positive correlation was observed between urinary MCP-1 and IL-8 levels. Whereas initial serum IL-8 levels were significantly increased in HUS children, serum MCP-1 levels were only slightly elevated compared with serum MCP-1 in control children. No correlation was found between urinary and serum chemokine concentrations. Histologic and EM studies of HUS biopsy specimens clearly showed the presence of MOs and to a lesser extent of PMNs in the glomeruli. The present data suggest an important local role for MOs and PMNs in the process of glomerular endothelial-cell damage. The chemokines MCP-1 and IL-8 may possibly be implicated in the pathogenesis of HUS through the recruitment and activation of MOs and PMNs, respectively. FAU - van Setten, P A AU - van Setten PA AD - Department of Pediatrics, University Hospital, Nijmegen, The Netherlands. FAU - van Hinsbergh, V W AU - van Hinsbergh VW FAU - van den Heuvel, L P AU - van den Heuvel LP FAU - Preyers, F AU - Preyers F FAU - Dijkman, H B AU - Dijkman HB FAU - Assmann, K J AU - Assmann KJ FAU - van der Velden, T J AU - van der Velden TJ FAU - Monnens, L A AU - Monnens LA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Pediatr Res JT - Pediatric research JID - 0100714 RN - 0 (Biomarkers) RN - 0 (Chemokine CCL2) RN - 0 (Interleukin-8) SB - IM MH - Biomarkers/blood/urine MH - Biopsy MH - Blood Cell Count MH - Chemokine CCL2/*blood/urine MH - Child MH - Child, Preschool MH - Female MH - Hemolytic-Uremic Syndrome/*blood/pathology/urine MH - Humans MH - Infant MH - Interleukin-8/*blood/urine MH - Kidney/*pathology/physiopathology MH - Male MH - Monocytes/pathology MH - Neutrophils/pathology MH - Reference Values EDAT- 1998/06/11 00:00 MHDA- 1998/06/11 00:01 CRDT- 1998/06/11 00:00 PHST- 1998/06/11 00:00 [pubmed] PHST- 1998/06/11 00:01 [medline] PHST- 1998/06/11 00:00 [entrez] AID - 10.1203/00006450-199806000-00008 [doi] PST - ppublish SO - Pediatr Res. 1998 Jun;43(6):759-67. doi: 10.1203/00006450-199806000-00008.