title: Anti-inflammatory and anti-allergic activities of hydroxylamine and related compounds.
abstract: The anti-inflammatory activities of several novel oximes and O-acyl oximes that we synthesized have been reported based on carrageenan-induced rat foot-pad swelling assay and histamine-induced rat vascular permeability assay. A cyclooxygenase (COX)-1 inhibitory effect has also been reported for 4'-piperidinoacetophenone and 4'-morpholinoacetophenone oximes and their O-acyl derivatives. To further search for more effective non-steroidal anti-inflammatory or anti-allergic drugs, 1-hydroxylamino-1-(4'-piperidinophenyl) ethane (P-HA) and 1-hydroxylamino-1-(4'-morpholinophenyl) ethane (M-HA) were synthesized from the corresponding oximes with sodium cyanoborohydride, and N,O-diacetyl hydroxylamines (P-HA-Ac and M-HA-Ac) were prepared from these hydroxylamines using acetyl chloride. These hydroxylamines and N,O-diacetyl hydroxylamines clearly exhibited inhibitory effects on mouse carrageenan-induced foot-pad swelling induced by oral administration (150, 37.5 mg/kg). An oral dose of P-HA-Ac (150 mg/kg) significantly inhibited the mouse anaphylactic reaction to ovalbumin measured by the abdominal wall (AW) method. Percutaneous administration of P-HA and M-HA significantly inhibited 2,4-dinitrofluorobenzene (DNFB)-induced contact hypersensitivity reaction (type IV) in mice at a dose of 0.5 and 0.1 mg/ear, respectively. All tested hydroxylamines and N,O-diacetyl hydroxylamines clearly inhibited both COX-1 and COX-2 enzyme activities with IC(50) values of 1.9-28.7 and 1.6-2.9 micro M against COX-1 and COX-2, respectively. Hydroxylamines (P-HA and M-HA) also showed a 5-lipoxygenase inhibitory effect.
authors.affiliation: School of Pharmaceutical Sciences, Mukogawa Women's University, Hyogo, Japan. hkataoka@mwu.mukogawa-u.ac.jp
authors.forename: Hiromi
authors.initials: H
authors.lastname: Kataoka
authors.forename: Shizuyo
authors.initials: S
authors.lastname: Horiyama
authors.forename: Masae
authors.initials: M
authors.lastname: Yamaki
authors.forename: Hisae
authors.initials: H
authors.lastname: Oku
authors.forename: Kyoko
authors.initials: K
authors.lastname: Ishiguro
authors.forename: Toyoshi
authors.initials: T
authors.lastname: Katagi
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Takayama
authors.forename: Masanori
authors.initials: M
authors.lastname: Semma
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Ito
mesh_terms: D000818:Animals; D018926:Anti-Allergic Agents / Q000737:chemistry* / Q000494:pharmacology / Q000627:therapeutic use; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry* / Q000494:pharmacology / Q000627:therapeutic use; D004487:Edema / Q000188:drug therapy / Q000503:physiopathology; D019811:Hydroxylamine / Q000737:chemistry* / Q000494:pharmacology* / Q000627:therapeutic use; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010147:Pain Measurement / Q000187:drug effects / Q000379:methods; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D018926:Anti-Allergic Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D019811:Hydroxylamine