PMID- 11275631 OWN - NLM STAT- MEDLINE DCOM- 20010927 LR - 20171101 IS - 0250-8095 (Print) IS - 0250-8095 (Linking) VI - 21 IP - 1 DP - 2001 Jan-Feb TI - Monocyte-related determinants of inflammation in patients on peritoneal dialysis. PG - 40-6 AB - AIMS: We studied markers of monocyte activation, i.e., the cell surface expression of CD11b and CD62L, and the serum concentrations of monocyte chemotactic protein 1 (MCP-1; a monocyte-specific chemoattractant) and soluble vascular cell adhesion molecule 1 (sVCAM-1; an adhesion molecule involved in monocyte recruitment) in 20 patients on peritoneal dialysis (PD), in 25 patients with chronic renal insufficiency, and in 27 healthy subjects. RESULTS: Monocytes obtained from the peripheral blood of PD patients had a significantly higher expression of CD62L (p = 0.02) as compared with monocytes from healthy subjects and a lower CD11b/CD18 expression as compared with monocytes collected from healthy subjects (p < 0.001) and from patients with renal insufficiency (p < 0.001). Monocytes from PD patients had, however, the capacity to increase the expression of CD11b following stimulation with a potent chemotactic factor. The serum concentrations of MCP-1 and sVCAM-1 were higher in PD patients (575 +/- 51 and 1,517 +/- 89 ng/ml) than in healthy subjects (225 +/- 17 and 668 +/- 64 ng/ml, respectively; p < 0.001 for both comparisons). There was a correlation between the levels of sVCAM-1 and MCP-1 (r = 0.48, p < 0.05) in patients on PD, but neither correlated with the monocyte expression of CD11b/CD18 or CD62L. The concentration of C-reactive protein was higher in patients on PD as compared with healthy subjects and correlated significantly with the concentration of sVCAM-1 (r = 0.63, p < 0.01). CONCLUSIONS: Monocytes in the peripheral circulation of patients on PD have a CD62L(high)/CD11b(low) phenotype, indicating that they have not undergone complete differentiation. Patients also have an increase in the systemic chemotactic activity for monocytes in combination with increased levels of sVCAM-1 and C-reactive protein. These inflammatory aberrations may play a pathophysiological role in the response to inflammatory and infectious diseases in patients on PD. FAU - Jacobson, S H AU - Jacobson SH AD - Department of Nephrology, Karolinska Hospital, Stockholm, Sweden. stefan.jacobson@ks.se FAU - Hylander, B AU - Hylander B FAU - Thylen, P AU - Thylen P FAU - Lundahl, J AU - Lundahl J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Am J Nephrol JT - American journal of nephrology JID - 8109361 RN - 0 (Cell Adhesion Molecules) SB - IM MH - Adult MH - Aged MH - Cell Adhesion Molecules/blood MH - Cell Count MH - Female MH - Humans MH - Inflammation/*immunology MH - Male MH - Middle Aged MH - Monocytes/*immunology MH - *Peritoneal Dialysis EDAT- 2001/03/29 10:00 MHDA- 2001/09/28 10:01 CRDT- 2001/03/29 10:00 PHST- 2001/03/29 10:00 [pubmed] PHST- 2001/09/28 10:01 [medline] PHST- 2001/03/29 10:00 [entrez] AID - 46217 [pii] AID - 10.1159/000046217 [doi] PST - ppublish SO - Am J Nephrol. 2001 Jan-Feb;21(1):40-6. doi: 10.1159/000046217.