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Tamarin model of pneumococcal bacteremia
Journal of Medical Primatology
|January 1, 1987
Summary
Tamarins showed limited natural defense against pneumococcal bacteremia. However, human immune globulin provided protection against lethal Streptococcus pneumoniae challenge, highlighting its therapeutic potential.
Area of Science:
- Immunology
- Infectious Diseases
- Microbiology
Background:
- Pneumococcal bacteremia poses a significant health threat.
- Understanding host defenses is crucial for developing effective treatments.
- Tamarins serve as a model organism for studying infectious diseases.
Purpose of the Study:
- To investigate the immune response of tamarins to Streptococcus pneumoniae.
- To evaluate the efficacy of immune globulin in protecting tamarins against pneumococcal infection.
Main Methods:
- Tamarins were immunized with pneumococcal capsular polysaccharide (PCP) vaccine and infected with serotype 7F Streptococcus pneumoniae.
- Antibody responses were measured.
- Protection against lethal bacterial challenge was assessed after treatment with human immune globulin intravenous or a mouse monoclonal antibody.
Main Results:
- Tamarins exhibited a poor antibody response to both PCP vaccine and S. pneumoniae infection.
- Pre-opsonization with human immune globulin or pre-treatment with immune globulin conferred protection against lethal serotype 7F S. pneumoniae challenge.
- A mouse monoclonal anti-type 7F PCP antibody offered minimal protection.
Conclusions:
- Tamarins have limited intrinsic defenses against pneumococcal bacteremia.
- Human immune globulin is a promising therapeutic agent for Streptococcus pneumoniae infections in this model.
- Further research into non-human primate models can inform human vaccine and treatment strategies.