Related Experiment Videos
Immunity to experimental renal candidiasis in rats
Infection and Immunity
|February 1, 1978
Summary
Germfree rats are more susceptible to Candida albicans infection than conventional rats. Vaccination with killed Candida albicans enhances resistance in germfree rats, offering insights into disseminated candidiasis mechanisms.
Area of Science:
- Immunology
- Microbiology
- Mycology
Background:
- Germfree animals lack a microbiome, impacting immune system development.
- Candida albicans is an opportunistic fungal pathogen causing candidiasis.
- Disseminated candidiasis is a serious systemic infection.
Purpose of the Study:
- To compare the susceptibility of germfree and conventional rats to Candida albicans.
- To investigate the effect of vaccination on resistance to disseminated candidiasis.
- To elucidate the mechanisms of resistance against Candida albicans.
Main Methods:
- Intravenous challenge of germfree and conventional rats with Candida albicans.
- Vaccination of germfree rats using Formalin-killed Candida albicans with different adjuvants.
- Histological examination of infected gnotobiotic rats.
Main Results:
- Germfree rats exhibited higher susceptibility to Candida albicans compared to conventional rats.
- Increased challenge dose overcame the resistance in conventional rats.
- Vaccination with Formalin-killed Candida albicans, with or without Freund adjuvants, enhanced resistance in germfree rats.
Conclusions:
- The gut microbiome plays a role in innate resistance to disseminated candidiasis.
- Vaccination strategies can enhance host defense against Candida albicans.
- Histological data provides insights into the host-pathogen interactions in disseminated candidiasis.