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Cytidine-5'-diphospho-choline conjugates. II.--Immunogenicity in rats
Annales D'Immunologie
|July 1, 1979
Summary
Cytidine diphospho-choline (CDPC) derivatives of human serum albumin (HSA) trigger rapid antibody synthesis in rats. These conjugates also reduced intestinal worm burden after infection with Nippostrongylus brasiliensis.
Area of Science:
- Immunology
- Parasitology
- Biochemistry
Background:
- Human serum albumin (HSA) derivatives modified with cytidine diphospho-choline (CDPC) can be immunogenic.
- The immune response to CDPC-HSA involves rapid IgM antibody synthesis.
Purpose of the Study:
- To investigate the immunogenicity of CDPC-HSA derivatives in rats.
- To assess the potential of CDPC-HSA to induce immune sensitivity and affect parasitic infections.
Main Methods:
- Rats were injected with CDPC-HSA in adjuvants to study antibody production.
- Skin sensitivity was induced via skin painting with the activated nucleotide.
- Gastric intubation of CDPC-HSA conjugates was performed before Nippostrongylus brasiliensis infection.
Main Results:
- CDPC-HSA induced rapid IgM anti-phosphorylcholine antibody synthesis, followed by anti-CDPC and anti-HSA antibodies.
- Skin painting with CDPC-HSA activated nucleotide induced specific skin sensitivity.
- Low-dose gastric intubation of CDPC-HSA conjugates reduced intestinal worm burden in infected rats.
Conclusions:
- CDPC-HSA derivatives are potent immunogens in rats, eliciting a swift antibody response.
- CDPC-HSA can induce both systemic and localized immune sensitivity.
- Oral administration of CDPC-HSA conjugates shows potential for reducing parasitic nematode infections.