Related Experiment Videos
Observations on the localization of Absidia corymbifera in vivo
Abstract:
The role of spore distribution and the presence of tissue-specific fungal growth stimulants and inhibitors in determining the in vivo localization of Absidia corymbifera were examined in experimentally infected mice. Intravenous inoculation resulted in generalized distribution of spores, with the highest concentrations accumulating in the liver and spleen. Active lesions containing developing mycelium were confined to the brain, kidneys and occasionally the myocardium. Fungal growth stimulating activity was present in all tissue examined, the liver and spleen being the most active. However at concentrations approaching those of whole tissues, the stimulatory activity of liver and spleen extracts drastically declined whereas that of brain and kidney preparations continued to increase. These effects, in conjunction with local variations in immune processes, were probably responsible for determining the distribution of A. corymbifera mycelial development in vivo.
Insights
This study investigated Absidia corymbifera localization in mice. Fungal growth was concentrated in the brain and kidneys, influenced by tissue-specific factors and immune responses.
Area of Science:
- Mycology
- Pathology
- Immunology
Background:
- Absidia corymbifera is an opportunistic fungal pathogen.
- Understanding its in vivo localization is crucial for treating infections.
Purpose of the Study:
- To investigate the role of spore distribution and tissue-specific factors in the localization of Absidia corymbifera.
- To determine the distribution of fungal growth and identify key influencing factors in experimentally infected mice.
Main Methods:
- Experimental infection of mice with Absidia corymbifera spores via intravenous inoculation.
- Analysis of spore distribution and mycelial development in various tissues.
- Assay of fungal growth stimulating and inhibiting activities in tissue extracts.
Main Results:
- Spores disseminated widely, with highest concentrations in the liver and spleen.
- Active fungal lesions (mycelium) were primarily found in the brain, kidneys, and myocardium.
- While liver and spleen showed high initial fungal growth stimulation, brain and kidney extracts supported sustained growth, suggesting tissue-specific regulation.
Conclusions:
- Tissue-specific fungal growth stimulants and inhibitors, alongside local immune processes, dictate the in vivo localization of Absidia corymbifera.
- The brain and kidneys are key sites for Absidia corymbifera mycelial development in this model.