PMID- 10220297 OWN - NLM STAT- MEDLINE DCOM- 19990607 LR - 20190915 IS - 1073-2322 (Print) IS - 1073-2322 (Linking) VI - 11 IP - 4 DP - 1999 Apr TI - Evaluation of Fc-receptor positive (FcR+) and negative (FcR-) monocyte subsets in sepsis. PG - 229-34 AB - The monocyte/macrophage (Mphi is central in the regulation of the immune response in states of trauma and sepsis. Because monocyte subsets, characterized by expression of the Fc-receptor (FcR), were shown to play distinct immunologic roles in trauma, it was the objective of this study to assess insights into the functional role of FcR positive (FcR+) and negative (FcR-) subclasses in surgical sepsis. In a prospective study, peripheral blood Mphi from 20 septic patients and 10 healthy volunteers were evaluated on consecutive days after the onset of sepsis. FcR+/- subsets were separated by rosetting with antibody-coated human erythrocytes. Receptor expression and synthesis of proinflammatory cytokines were used to evaluate the functional role of these cells. We demonstrated a significant monocytosis (350%; p<.01) and suppression of human lymphocyte antigen (HLA-DR) expression (35%; p<.05). Synthesis of Interleukin-1beta (IL-1beta; e.g., Day 1: 230+/-30 pg/mL) and Interleukin-6 (IL-6; e.g., Day 1: 1920+/-350 U/mL) were significantly higher (p<.05) in FcR+ subsets than in controls (IL-1beta: 100+/-5 pg/mL; IL-6: 353+/-75 U/mL). Tumor necrosis factor-alpha (TNF-alpha) was elevated in FcR+ monocytes but did not reach a significant value. Interleukin-8 (IL-8) synthesis showed only on Day 1 and in controls significant differences in FcR+ and FcR- cells (Day1: FcR-: 19.6+/-4.1 nM; FcR+: 9+/-4.3 nM). Sepsis results in a significant shift toward FcR+ monocytes. This cell population is characterized by high proinflammatory cytokine synthesis. The extent of this shift seems to identify a group of high risk septic patients that might benefit from immunomodulatory therapy. FAU - Schinkel, C AU - Schinkel C AD - Ludwig-Maximilians University Munich, Klinikum Grosshadern, Department of Surgery, Germany. FAU - Sendtner, R AU - Sendtner R FAU - Zimmer, S AU - Zimmer S FAU - Walz, A AU - Walz A FAU - Hultner, L AU - Hultner L FAU - Faist, E AU - Faist E LA - eng PT - Journal Article PL - United States TA - Shock JT - Shock (Augusta, Ga.) JID - 9421564 RN - 0 (HLA-DR Antigens) RN - 0 (Interleukin-1) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Receptors, Fc) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adult MH - Aged MH - Female MH - HLA-DR Antigens/metabolism MH - Humans MH - Inflammation/metabolism MH - Interleukin-1/metabolism MH - Interleukin-6/metabolism MH - Interleukin-8/metabolism MH - Male MH - Middle Aged MH - Monocytes/*metabolism MH - Predictive Value of Tests MH - Receptors, Fc/*metabolism MH - Sepsis/*metabolism MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 1999/04/29 00:00 MHDA- 1999/04/29 00:01 CRDT- 1999/04/29 00:00 PHST- 1999/04/29 00:00 [pubmed] PHST- 1999/04/29 00:01 [medline] PHST- 1999/04/29 00:00 [entrez] AID - 10.1097/00024382-199904000-00001 [doi] PST - ppublish SO - Shock. 1999 Apr;11(4):229-34. doi: 10.1097/00024382-199904000-00001.