title: The effect of treatment with 13-cis-retinoic acid on the metabolic burst of peripheral blood neutrophils from patients with acne.
abstract: The N-formylmethionyl-leucyl-phenylalanine (f-MLP)-induced metabolic burst activity of peripheral blood neutrophils isolated from acne patients undergoing treatment with 13-cis-retinoic acid at a dose of 1.0 mg/kg/day was investigated using a luminol-enhanced chemiluminescence assay. The mean and median chemiluminescence response were significantly greater (P less than 0.05) in patients receiving 13-cis-retinoic acid than in untreated acne patients or age-matched controls. Pre-incubation of neutrophils with 13-cis-retinoic acid (10 nmol/l) did not affect the chemiluminescence response to formyl peptide. A sequential study over 20 weeks in seven patients demonstrated that chemiluminescence peaked after 2-8 weeks of treatment. In three patients this was accompanied by a worsening of their acne. These studies suggest that, in the initial phase, treatment with 13-cis-retinoic acid may exacerbate, through pro-inflammatory priming of neutrophils, certain neutrophil-mediated inflammatory processes in acne.
authors.affiliation: Department of Dermatology, University of Glasgow, Scotland.
authors.forename: W
authors.initials: W
authors.lastname: Perkins
authors.forename: K V
authors.initials: KV
authors.lastname: Crocket
authors.forename: M B
authors.initials: MB
authors.lastname: Hodgins
authors.forename: R M
authors.initials: RM
authors.lastname: Mackie
authors.forename: J M
authors.initials: JM
authors.lastname: Lackie
mesh_terms: D000152:Acne Vulgaris / Q000097:blood / Q000188:drug therapy* / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D002478:Cells, Cultured; D005260:Female; D006801:Humans; D008163:Luminescent Measurements; D008297:Male; D008722:Methods; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D009504:Neutrophils / Q000187:drug effects* / Q000378:metabolism; D013237:Stereoisomerism; D014212:Tretinoin / Q000627:therapeutic use*
chemical_list: D014212:Tretinoin; D009240:N-Formylmethionine Leucyl-Phenylalanine