Collectively, our findings provide compelling evidence for the existence of fungal infection in the CNS from AD patients, but not in control individuals.
This is new. The evidence of fungal infection in the blood vessels in the brains of Alzheimer's patients was widespread in a small study of ten patients. The authors think this infection could explain alot. It was published in Nature
The possibility that AD is a fungal disease, or that fungal infection is a risk factor for the disease, opens new perspectives for effective therapy for these patients. The present findings demonstrate that fungi can be detected in brain tissue from different regions of the AD CNS. In all eleven patients (plus three additional CP samples) described in this study, as well as in four patients previously analysed, there is clear evidence for fungal cells inside neurons or extracellularly29. Therefore, 100% of the AD patients analysed thus far by our laboratory present fungal cells and fungal material in brain sections.
Proceeding on the assumption that fungi are the aetiological agent of AD, all of the symptoms observed in AD patients can be readily explained. For example, the slow progression of the disease fits well with the chronic nature of fungal infections if they remain untreated. Moreover, inflammation and activation of the immune system may be due to an infectious fungal agent. Disseminated fungal infections can induce cytokine production53,54,55, which can take place years before the onset of cognitive decline as observed in AD. Thus, this disseminated infection may slowly spread to the CNS and synaptic dysfunction and neuronal loss takes place only when the fungal burden in some areas of the CNS is high.