PMID- 20348036 OWN - NLM STAT- MEDLINE DCOM- 20100903 LR - 20181201 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 10 IP - 6 DP - 2010 Jun TI - Effects of ropivacaine on adhesion molecule CD11b expression and function in human neutrophils. PG - 662-7 LID - 10.1016/j.intimp.2010.03.009 [doi] AB - Local anesthetics possess a wide range of anti-inflammatory properties through their effects on neutrophils. However, limited information is available on the effects of ropivacaine (a new local anesthetic) on neutrophil function. The aim of this study was to investigate anti-inflammatory properties of ropivacaine with regard to its effects on the expression and function of CD11b in human neutrophils. CD11b expression was examined by flow cytometry and its function was determined by measuring adhesion of neutrophils to human umbilical vein endothelial cells (HUVECs). Ropivacaine inhibited CD11b expression in formyl-methionyl-leucyl-phenylalanine (fMLP)-activated neutrophils in a concentration-dependent manner, but not in a time-dependent manner. The inhibitory potency of ropivacaine was similar to that of bupivacaine and levobupivacaine, but was more potent than that of lidocaine. The up-regulation of CD11b induced by platelet-activating factor (PAF) priming was also inhibited by ropivacaine. fMLP increased adhesion of neutrophils to HUVECs, which was inhibited by ropivacaine. In addition, ropivacaine more potently inhibited the fMLP-induced CD11b expression in the presence of ethylene glycol-bis(2-aminoethylether)-N,N,N ,N -tetraacetic acid (EGTA), a chelator of extracellular Ca(2+). However, ropivacaine showed no effect on the fMLP-induced CD11b expression in the presence of butan-1-ol, a blocker of phospholipase D (PLD) pathway, which completely inhibited the fMLP-induced CD11b expression in neutrophils. Our results suggest that ropivacaine exerts anti-inflammatory activity, and this appears to be mediated through inhibiting the expression and function of adhesion molecule CD11b in neutrophils. CI - Copyright 2010 Elsevier B.V. All rights reserved. FAU - Zhu, Xuqin AU - Zhu X AD - Department of Anesthesiology, Fudan University Cancer Hospital, No. 270 Dong-an Road, Shanghai, PR China. FAU - Tan, Zhiming AU - Tan Z FAU - Chen, Jiawei AU - Chen J FAU - Zhu, Minmin AU - Zhu M FAU - Xu, Yajun AU - Xu Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100327 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Amides) RN - 0 (Anesthetics, Local) RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (CD11 Antigens) RN - 0 (Platelet Activating Factor) RN - 526U7A2651 (Egtazic Acid) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) RN - 7IO5LYA57N (Ropivacaine) RN - 8PJ61P6TS3 (1-Butanol) RN - EC 3.1.4.4 (Phospholipase D) SB - IM MH - 1-Butanol/immunology MH - Amides/*pharmacology MH - Anesthetics, Local/*pharmacology MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - CD11 Antigens/*biosynthesis MH - Cell Adhesion/drug effects/immunology MH - Egtazic Acid/immunology MH - Endothelial Cells/drug effects/immunology MH - Humans MH - N-Formylmethionine Leucyl-Phenylalanine/immunology MH - Neutrophils/*drug effects/immunology MH - Phospholipase D/immunology MH - Platelet Activating Factor/immunology MH - Ropivacaine MH - Umbilical Veins/drug effects/immunology EDAT- 2010/03/30 06:00 MHDA- 2010/09/04 06:00 CRDT- 2010/03/30 06:00 PHST- 2009/11/25 00:00 [received] PHST- 2010/02/09 00:00 [revised] PHST- 2010/03/12 00:00 [accepted] PHST- 2010/03/30 06:00 [entrez] PHST- 2010/03/30 06:00 [pubmed] PHST- 2010/09/04 06:00 [medline] AID - S1567-5769(10)00093-7 [pii] AID - 10.1016/j.intimp.2010.03.009 [doi] PST - ppublish SO - Int Immunopharmacol. 2010 Jun;10(6):662-7. doi: 10.1016/j.intimp.2010.03.009. Epub 2010 Mar 27.