title: Aceclofenac, a new nonsteroidal antiinflammatory drug, decreases the expression and function of some adhesion molecules on human neutrophils.
abstract: OBJECTIVE
  To study the effect of aceclofenac, a new nonsteroidal antiinflammatory drug (NSAID), on the expression and function of adhesion molecules in human neutrophils.
  
  
  METHODS
  We used flow cytometry analysis to determine peripheral blood neutrophil expression of L-selectin, CD11a, CD11b, CD31, CD43, CD44, and intercellular adhesion molecule 2 (ICAM-3) surface adhesion molecules after treatment with aceclofenac, diclofenac, or dexamethasone. Granular enzyme activity was quantitated in extracellular medium of neutrophils treated with different NSAID: In vitro adhesion assays were developed to examine the effects of aceclofenac on both neutrophil adhesion to tumor necrosis factor alpha stimulated human umbilical vein endothelial cells under nonstatic conditions, and homotypic neutrophil aggregation induced by anti-ICAM-3 and anti-CD18 monoclonal antibodies (Mab).
  
  
  RESULTS
  Aceclofenac induced a dramatic decrease of L-selectin expression, whereas a moderate and slight decrement of CD43 and ICAM-3 expression was also observed. In contrast, the expression of other adhesion molecules by neutrophils was unaffected (CD11a, CD31, CD44) or slightly increased (CD11b). Cell adhesion assays, performed under nonstatic conditions, revealed that aceclofenac significantly diminished the L-selectin dependent neutrophil adhesion to endothelial cells. Neutrophil aggregation induced with anti-CD43 Mab was also significantly inhibited by aceclofenac.
  
  
  CONCLUSIONS
  Aceclofenac had a faster and more potent effect than the other NSAID studied, mainly on the expression of cell adhesion molecules. This new NSAID efficiently interferes with neutrophil adhesion to endothelium and this effect may represent an additional relevant mechanism in its antiinflammatory activity.
authors.affiliation: Section of Rheumatology, Hospital de la Princesa, Universidad Autónoma de Madrid, Spain.
authors.forename: I
authors.initials: I
authors.lastname: González-Alvaro
authors.forename: L
authors.initials: L
authors.lastname: Carmona
authors.forename: F
authors.initials: F
authors.lastname: Díaz-González
authors.forename: R
authors.initials: R
authors.lastname: González-Amaro
authors.forename: F
authors.initials: F
authors.lastname: Mollinedo
authors.forename: F
authors.initials: F
authors.lastname: Sánchez-Madrid
authors.forename: A
authors.initials: A
authors.lastname: Laffón
authors.forename: R
authors.initials: R
authors.lastname: García-Vicuña
mesh_terms: D000893:Anti-Inflammatory Agents / Q000494:pharmacology; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D015703:Antigens, CD / Q000187:drug effects / Q000378:metabolism; D002448:Cell Adhesion / Q000187:drug effects / Q000502:physiology*; D015815:Cell Adhesion Molecules / Q000096:biosynthesis*; D003907:Dexamethasone / Q000494:pharmacology; D004008:Diclofenac / Q000031:analogs & derivatives* / Q000494:pharmacology; D004730:Endothelium, Vascular / Q000378:metabolism; D005434:Flow Cytometry; D006801:Humans; D066298:In Vitro Techniques; D009504:Neutrophils / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000893:Anti-Inflammatory Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D015703:Antigens, CD; D015815:Cell Adhesion Molecules; D004008:Diclofenac; D003907:Dexamethasone; C056498:aceclofenac