title: [Antigenicity study of iodixanol, a new non-ionic contrast medium].
abstract: Antigenic potential of iodixanol, a new non-ionic contrast agent, was evaluated by systemic anaphylaxis (SA) test and homologous passive cutaneous anaphylaxis (Homo-PCA) test using guinea pigs and IgE mediated heterologous PCA (Hetero-PCA) test using rats passively sensitized with mouse sera. SA test was conducted in guinea pigs sensitized with iodixanol at dose levels of 32 or 320 mgI/kg emulsified with Freund's complete adjuvant, followed by challenge with iodixanol (320 mgI/kg). Four- or 24-hr Homo-PCA test was performed with sera from the sensitized animals. Neither positive SA nor Homo-PCA reaction was observed. Hetero-PCA test was performed with the sera from the mice which were sensitized with iodixanol (32 or 320 mgI/kg) with aluminum hydroxide gel. No positive Hetero-PCA reaction was detected in the sera, followed by challenge with iodixanol (320 mgI/kg). Thus, it is concluded that iodixanol possesses no antigenic potential under the present experimental conditions.
mesh_terms: D000707:Anaphylaxis / Q000139:chemically induced; D000818:Animals; D003287:Contrast Media; D005260:Female; D006168:Guinea Pigs; D051379:Mice; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D014283:Triiodobenzoic Acids / Q000276:immunology*
chemical_list: D003287:Contrast Media; D014283:Triiodobenzoic Acids; C044834:iodixanol