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[The effects of fosfomycin on antigenicity (author's transl)]
Abstract:
The antigenicity of fosfomycin (FOM), a new antibiotic agent, was studied. The binding of 3H-FOM with human serum protein was measured by the short term dialysis method. The binding was very weak only by 2.16% and reversible. The rabbits were immunized subcutaneously by fosfomycin as sodium salt (FOM-Na) with FREUND'S complete adjuvant. Antigenicity of IgG was examined by means of agar gel precipitation, passive cutaneous anaphylaxis and passive hemagglutination. To study the antigenicity of IgE, the BALB/cA mice were immunized intraperitoneally by FOM-Na with aluminum hydroxide gel and, passive cutaneous IgG and IgE. Consequently, it can be concluded that FOM does not conjugate with human serum protein to form its hapten and has not antigenicity.
Insights
Fosfomycin (FOM) does not bind significantly to human serum proteins, indicating it is unlikely to cause allergic reactions. Studies confirmed FOM has no significant antigenicity, making it a safe antibiotic option.
Area of Science:
- Immunology
- Pharmacology
- Microbiology
Context:
- Fosfomycin (FOM) is a novel antibiotic agent.
- Understanding the immunogenic potential of antibiotics is crucial for patient safety.
- Previous research has not fully elucidated FOM's antigenicity.
Purpose:
- To investigate the antigenicity of the antibiotic fosfomycin (FOM).
- To determine if FOM conjugates with human serum proteins to form a hapten.
- To assess the potential for FOM to elicit an immune response (IgG and IgE).
Summary:
- 3H-FOM binding to human serum protein was minimal (2.16%) and reversible using short-term dialysis.
- Immunization of rabbits with FOM-sodium salt (FOM-Na) did not yield positive results in agar gel precipitation, passive cutaneous anaphylaxis, or passive hemagglutination tests for IgG.
- BALB/cA mice immunized with FOM-Na did not show significant IgE responses, indicating FOM lacks antigenicity.
Impact:
- The findings suggest that fosfomycin does not act as a hapten by conjugating with human serum proteins.
- Fosfomycin demonstrates a lack of significant antigenicity, reducing concerns about potential allergic reactions.
- This research supports the safety profile of fosfomycin as an antibiotic agent.