Abstract
Carboplatin and carboplatin-ovalbumin mixture were examined for their antigenicity in Hartley guinea pigs as well as BALB/c and C3H/He mice in comparison with ovalbumin (OVA) and 2,4-dinitrochlorobenzene (DNCB)-OVA conjugate. The results obtained were as follows: 1. When guinea pigs were sensitized with carboplatin or carboplatin-OVA emulsified with Freund's complete adjuvant (FCA), these animals showed negative reactions in active systemic anaphylaxis (ASA), active cutaneous anaphylaxis (ACA), passive cutaneous anaphylaxis (PCA), passive hemagglutination (PHA) and Schultz-Dale test. 2. When mice were sensitized with carboplatin or carboplatin-OVA adsorbed to alum, these animals revealed a negative reaction in PCA using rats. 3. As positive controls, guinea pigs were sensitized with OVA or DNCB-OVA emulsified with FCA, and mice with OVA or DNCB-OVA adsorbed to alum. As a result, these animals disclosed positive reactions in ASA, ACA, PCA, PHA and Schultz-Dale test. As shown above, carboplatin was considered to possess neither antigenic nor haptenic properties. In addition, the dose levels of carboplatin employed in the present experiment were confirmed not to suppress immune reactions.
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