title: Effects of a new foam formulation of ketoprofen lysine salt in experimental models of inflammation and hyperalgesia.
abstract: The anti-inflammatory and analgesic profile of a new topical foam formulation of ketoprofen lysine salt (CAS 57469-78-0, Artrosilene Schiuma, KLS-foam) was characterized in comparison with marketed gel formulations containing KLS (KLS-gel) or diclofenac diethylammonium salt (DCF-gel). KLS-foam dose-dependently inhibited oedema formation and hyperalgesia induced by subplantar injection of carrageenan or substance P, being more potent than KLS-gel. At equieffective anti-inflammatory doses, KLS-foam provided a more pronounced analgesic effect than DCF-gel. KLS-foam also markedly inhibited exudate formation and prostaglandin production induced by subcutaneous implantation of carrageenan soaked sponges. In carrageenan induced paw inflammation, KLS-foam provided the same anti-inflammatory effect as orally administered KLS, but induced significantly less gastric damages. Oral administration of KLS resulted in sustained systemic absorption of ketoprofen, whereas after topical application of KLS-foam no appreciable ketoprofen plasma levels were detected. These data support the anti-inflammatory and particularly the analgesic effectiveness of the new foam formulation of KLS, a finding that, together with the high gastric tolerability, further emphasizes the usefulness of KLS-foam in the treatment of localized flogistic diseases and associated pain.
authors.affiliation: Pharmacological Department, Dompé Farmaceutici SpA, Milan, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Daffonchio
authors.forename: A
authors.initials: A
authors.lastname: Bestetti
authors.forename: G
authors.initials: G
authors.lastname: Clavenna
authors.forename: G
authors.initials: G
authors.lastname: Fedele
authors.forename: M P
authors.initials: MP
authors.lastname: Ferrari
authors.forename: C
authors.initials: C
authors.lastname: Omini
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000493:pharmacokinetics / Q000627:therapeutic use*; D002351:Carrageenan; D004008:Diclofenac / Q000494:pharmacology; D005122:Exudates and Transudates / Q000187:drug effects; D005260:Female; D005753:Gastric Mucosa / Q000187:drug effects; D005782:Gels; D006930:Hyperalgesia / Q000139:chemically induced / Q000188:drug therapy* / Q000473:pathology; D007249:Inflammation / Q000139:chemically induced / Q000188:drug therapy* / Q000473:pathology; D007660:Ketoprofen / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000493:pharmacokinetics / Q000627:therapeutic use; D008239:Lysine / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000493:pharmacokinetics / Q000627:therapeutic use; D008297:Male; D011453:Prostaglandins / Q000096:biosynthesis; D051381:Rats; D017207:Rats, Sprague-Dawley; D013373:Substance P / Q000378:metabolism
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D005782:Gels; D011453:Prostaglandins; D004008:Diclofenac; D013373:Substance P; C029946:ketoprofen lysine; D002351:Carrageenan; D007660:Ketoprofen; D008239:Lysine