Differences in the Anaphylactic Response between C3H/HeOuJ and BALB/c Mice

Area of Science:

• Immunology
• Allergy Research
• Animal Models

Background:

• Anaphylaxis is a severe, potentially fatal allergic reaction with increasing incidence.
• Murine models are crucial for understanding anaphylaxis mechanisms and developing therapies.
• Comparing different mouse strains and protocols is essential for reproducible research.

Purpose of the Study:

• To compare clinical and immune responses in BALB/c and C3H/HeOuJ mice during allergen-induced systemic anaphylaxis.
• To evaluate the suitability of these two commonly used mouse strains in an intraperitoneal anaphylaxis model.

Main Methods:

• Female BALB/c and C3H/HeOuJ mice were sensitized intraperitoneally with peanut and adjuvants.
• Specific immunoglobulin (sIg) G1, sIgG2a, sIgE, total IgE, and histamine release were measured.
• Splenocyte cytokine production (IL-4, IL-5, IL-10, IL-12, IL-13, IFN-γ) and anaphylaxis symptoms were assessed post-challenge.

Main Results:

• Both mouse strains developed anaphylactic symptoms and induced specific immunoglobulins (sIg) upon peanut challenge.
• C3H/HeOuJ mice exhibited earlier, higher sIgG1, sIgG2a, and sIgE production, with more severe clinical symptoms and histamine release.
• BALB/c mice showed greater release of cytokines including IL-4, IL-5, IL-10, IL-13, and IFN-γ.

Conclusions:

• Both BALB/c and C3H/HeOuJ mouse models are suitable for studying anaphylaxis.
• These models can be utilized for research into anaphylaxis pathogenesis and therapeutic strategies.
• Researchers must account for strain-specific differences in clinical, humoral, and cellular responses when designing anaphylaxis studies.